阅读说明：本技术 一种汽车转向球头座内表面淬火装置及淬火方法 (Quenching device and quenching method for inner surface of automobile steering ball seat ) 是由 王达鹏 孙超 陈博 马廷涛 吴宁 郇宜梅 李航宇 姜波 张正杰 夏昌兴 于 2019-09-18 设计创作，主要内容包括：本发明公开了一种汽车转向球头座内表面淬火装置及淬火方法,淬火装置由感应器和旋转机构组成,感应器的有效加热导线的有效加热端为串联的双层螺旋状,有效加热导线的外轮廓形状与转向球头座的内表面相匹配,旋转机构中水平托板固定在旋转支座一侧,并配合压板组件,实现对转向球头座的支撑,旋转支座另一侧安装有配重组件,以使旋转支座两侧配重相同。所述淬火方法为：通过旋转机构带动转向球头座快速旋转并上升,待感应器的有效加热导线与先将转向球头座相配合后,停止上升,感应器开始导电加热,并延时喷射淬火液实现淬火。本发明能够实现转向球头座内表面淬火部位硬化层连续有效均匀分布,保证淬火硬度、硬化层深度以及金相组织均匀且合理。(the invention discloses a quenching device and a quenching method for the inner surface of a steering ball head seat of an automobile, wherein the quenching device consists of an inductor and a rotating mechanism, the effective heating end of an effective heating wire of the inductor is in a series double-layer spiral shape, the outline shape of the effective heating wire is matched with the inner surface of the steering ball head seat, a horizontal supporting plate in the rotating mechanism is fixed on one side of a rotating support and matched with a pressing plate assembly to realize the support of the steering ball head seat, and a counterweight assembly is arranged on the other side of the rotating support so as to ensure that counterweights on two sides of the rotating support are the same. The quenching method comprises the following steps: the rotating mechanism drives the steering ball head seat to rotate rapidly and ascend, after an effective heating wire of the sensor is matched with the steering ball head seat, the sensor stops ascending, the sensor starts conducting heating, and quenching is realized by spraying quenching liquid in a delayed mode. The invention can realize continuous, effective and uniform distribution of the hardened layer of the quenching part on the inner surface of the steering ball head seat, and ensure uniform and reasonable quenching hardness, hardened layer depth and metallographic structure.)

1. The utility model provides an automobile steering bulb seat internal surface guenching unit which characterized in that:

The device consists of an inductor (A) and a rotating mechanism (B);

The effective heating end of the effective heating wire (13) of the inductor (A) is in a series double-layer spiral shape, and the outer contour shape of the effective heating end of the effective heating wire (13) is matched with the inner surface shape of the steering ball seat (14);

the rotating mechanism (B) consists of an arc-shaped connecting plate (15), a horizontal supporting plate (16), an arc-shaped groove (17), a pressing plate lower supporting plate (18), a pressing plate (19), a balance weight supporting plate (21), a balance weight block (22) and a rotating support (24), wherein the top of the rotating support (24) is provided with a ball socket mounting groove, the bottom of the rotating support (24) is provided with a top matching hole (28), the horizontal supporting plate (16) is fixed on one side of the rotating support (24) through the arc-shaped connecting plate (15), the arc-shaped groove (17) is fixed above the end part of the horizontal supporting plate (16) to limit the horizontal rotation of the steering ball socket (14), the pressing plate lower supporting plate (18) is fixed on two sides of the horizontal supporting plate (16), the arc-shaped groove surfaces of the arc-shaped connecting plate (15), the horizontal supporting plate (16) and the arc-shaped groove (17) are matched with a pull rod of the steering ball socket, two ends of the pressing plate (19) are fixedly connected with the pressing plate lower supporting plate (18), the balance weight supporting plate (21) and the horizontal supporting plate (16) are fixed on the other side of the rotating support (24) in a centrosymmetric manner, and the balance weight block (22) is fixed on the balance weight supporting plate (21), so that the balance weights on two sides of the rotating support (24) are the same.

2. the apparatus for quenching the inner surface of the ball cup for vehicle steering according to claim 1, wherein:

The sensor (A) consists of a first contact plate (1), a second contact plate (2), an insulation plate (3), an insulation screw (4), a cooling water inlet pipe (5), a cooling water outlet pipe (6), a first transition lead (7), a second transition lead (8), a first water spray pipe connecting plate (9), a second water spray pipe connecting plate (10), a first quenching liquid water spray pipe (11), a second quenching liquid water spray pipe (12) and an effective heating lead (13);

the insulation board (3) is fixed between the connection end faces of the first contact plate (1) and the second contact plate (2) through insulation screws (4), the outer side walls of a first transition wire (7) and a second transition wire (8) are respectively fixed on the first contact plate (1) and the second contact plate (2), the cooling water inlet pipe (5) and the cooling water outlet pipe (6) are respectively communicated with one ends of the first transition wire (7) and the second transition wire (8), and the other ends of the first transition wire (7) and the second transition wire (8) are respectively communicated with two ends of an effective heating wire (13), so that the cooling water inlet pipe (5), the first transition wire (7), the effective heating wire (13), the second transition wire (8) and the cooling water outlet pipe (6) are sequentially communicated to form a circulating cooling water loop;

The first quenching liquid water spray pipe (11) and the second quenching liquid water spray pipe (12) are respectively fixed on the first contact plate (1) and the second contact plate (2) through the first water spray pipe connecting plate (9) and the second water spray pipe connecting plate (10), and the water spray pipe directions of the first quenching liquid water spray pipe (11) and the second quenching liquid water spray pipe (12) face the inner surface quenching area of the steering ball head seat (14).

3. The apparatus for quenching the inner surface of the steering ball cup of an automobile according to claim 1 or 2, wherein:

the clearance X between the double-layer spiral heating wires at the effective heating end of the effective heating wire (13) is 0.4-0.6 mm, the vertical distance Y between the upper layer spiral wire of the double-layer spiral heating wire and the inner surface of the steering ball socket is 0.4-0.6 mm, and the vertical distance Z between the lower layer spiral wire of the double-layer spiral heating wire and the inner surface of the steering ball socket is 0.4-0.6 mm.

4. the apparatus for quenching the inner surface of the ball cup for vehicle steering according to claim 2, wherein:

The water spray pipes of the first quenching liquid water spray pipe (11) and the second quenching liquid water spray pipe (12) are staggered front and back.

5. the apparatus for quenching the inner surface of the ball cup for vehicle steering according to claim 2, wherein:

The first contact plate (1), the second contact plate (2), the first spray pipe connecting plate (9) and the second spray pipe connecting plate (10) are formed by bending copper plates;

The first transition lead (7) and the second transition lead (8) are both made of hollow red copper square tubes;

The cooling water inlet pipe (5), the cooling water outlet pipe (6), the effective heating wire (13), the first quenching liquid water spray pipe (11) and the second quenching liquid water spray pipe (12) are all formed by bending hollow red copper round pipes.

6. the apparatus for quenching the inner surface of the ball cup for vehicle steering according to claim 1, wherein:

In the rotating mechanism B, a quenching liquid outlet hole (25) is formed in one side wall of the groove bottom of the ball seat mounting groove of the rotating support (24).

7. the apparatus for quenching the inner surface of the ball cup for vehicle steering according to claim 1, wherein:

The arc-shaped connecting plate (15) is respectively matched with three first threaded holes (26) uniformly distributed on the side wall above the rotary support (24) through three screws, so that the arc-shaped connecting plate is fixedly connected with the rotary support (24).

8. the apparatus for quenching the inner surface of the ball cup for vehicle steering according to claim 1, wherein:

the arc-shaped connecting plate (15), the horizontal supporting plate (16), the arc-shaped groove (17) and the pressing plate lower supporting plate (18) are fixed in a welding mode.

9. the apparatus for quenching the inner surface of the ball cup for vehicle steering according to claim 1, wherein:

the counterweight supporting plate (21) is fixed on the side wall of the rotating support (24) through a screw, and the counterweight block (22) is fixed on the counterweight supporting plate (21) through a second bolt (23).

10. the quenching method of the quenching device for the inner surface of the automobile steering ball cup seat as claimed in claim 1, wherein:

The quenching method comprises the following specific processes:

The method comprises the following steps: putting the end of the ball head seat of the steering ball head seat (14) into a ball head seat mounting groove of a rotary support (24), arranging a pull rod of the steering ball head seat (14) in arc-shaped grooves of an arc-shaped connecting plate (15) and a horizontal supporting plate (16) and attaching the pull rod to the arc-shaped grooves, firmly pressing the steering ball head seat (14) on the horizontal supporting plate (16) through a pressing plate (19), and wrapping and limiting the end part of the pull rod of the steering ball head seat (14) in an arc-shaped groove (17);

Step two: starting the quenching machine tool, wherein the rotating center of the quenching machine tool drives the rotating mechanism (B) to start to rotate rapidly, meanwhile, the rotating center of the quenching machine tool drives the steering ball socket (14) to rise rapidly at the speed of 1800mm/min, so that when the inner surface of the ball socket of the steering ball socket (14) moves to the heating position of the effective heating wire (13) of the inductor (A), the rotating center of the quenching machine tool stops rising, at the moment, the inductor (A) is started to conduct and heat the effective heating wire (13) and delay for 1.1s, when the conduction heating is delayed for 1.0s, quenching cooling is started, and quenching cooling liquid is sprayed to the quenching area of the inner surface of the ball socket of the steering ball socket (14) through the first quenching liquid water spraying pipe (11) and the second quenching liquid water spraying pipe (12) and is cooled for 5 s;

Step three: and (3) after the quenching cooling delay is finished, the rotating center of the quenching machine tool drives the steering ball socket (14) on the rotating mechanism (B) to stop rotating, and then the rotating center of the quenching machine tool drives the steering ball socket (14) on the rotating mechanism (B) to descend at the speed of 1000mm/min and takes down the steering ball socket (14) after quenching is finished, so that the quenching process is finished.

Technical Field

The invention belongs to the technical field of heat treatment processes of automobile steering ball head seat parts, and particularly relates to a quenching device and a quenching method for the inner surface of an automobile steering ball head seat.

Background

The automobile steering ball head seat is an important component of an automobile steering ball head assembly and is also a key part in an automobile steering system, and the inner surface of the ball head seat and a steering ball head are matched to work and belong to a bearing concentrated area, so that the automobile steering ball head seat needs to be strengthened by a quenching process in the production process to improve the strength and the wear resistance of the automobile steering ball head seat.

because the cross section of the inner surface of the ball head seat is in an arc structure, the diameter of the inner surface is smaller, the requirement on gaps between the inductor and each part of the inner surface is very strict, the requirements on the structure of the quenching inductor and the heat treatment process are higher, particularly, the hardened layers at each part of the inner surface are ensured to be uniform and continuous at the quenching part of the inner surface, the gaps between the inductor and the inner surface are uniform and consistent, and the phenomenon of local heating and overheating is avoided; meanwhile, one end of the ball head seat part is provided with a pull rod, namely, the ball head seat part is of an asymmetric structure along the circumferential direction of the quenching inner surface, the weight of the ball head seat part is unbalanced due to the asymmetric structure, the gravity center of the inner surface of the rotary quenching ball head seat can be deviated, the swinging is easy to occur, the uniform and consistent gap between the sensor and the inner surface of the ball head seat cannot be ensured, and if the problem of uniform and stable rotation cannot be solved in the quenching rotating process, the induction quenching process is difficult to perform. The existing quenching technology can not meet the technical requirement of quenching of the automobile steering ball head seat.

disclosure of Invention

aiming at the defects in the prior art, the invention provides a quenching device and a quenching method for the inner surface of a steering ball head seat of an automobile, so that the hardened layers of the quenching part on the inner surface of the steering ball head seat are continuously, effectively and uniformly distributed, and the quenching hardness, the depth of the hardened layers and the metallographic structure are uniform and reasonable. The technical scheme of the invention is as follows by combining the attached drawings of the specification:

A quenching device for the inner surface of an automobile steering ball seat consists of an inductor A and a rotating mechanism B;

the effective heating end of the effective heating wire 13 of the inductor A is a double-layer spiral shape connected in series, and the outer contour shape of the effective heating end of the effective heating wire 13 is matched with the inner surface shape of the steering ball seat 14;

The rotating mechanism B comprises an arc-shaped connecting plate 15, a horizontal supporting plate 16, an arc-shaped groove 17, a pressing plate lower supporting plate 18, a pressing plate 19, a balance weight supporting plate 21, a balance weight 22 and a rotating support 24, wherein the top of the rotating support 24 is provided with a ball seat mounting groove, the bottom of the rotating support 24 is provided with a tip matching hole 28, the horizontal supporting plate 16 is fixed on one side of the rotating support 24 through the arc-shaped connecting plate 15, the arc-shaped groove 17 is fixed above the end part of the horizontal supporting plate 16 to limit the horizontal rotation of the steering ball seat 14, the pressing plate lower supporting plate 18 is fixed on two sides of the horizontal supporting plate 16, the arc-shaped groove surfaces of the arc-shaped connecting plate 15, the horizontal supporting plate 16 and the arc-shaped groove 17 are matched with a pull rod of the steering ball seat 14, the pull rod of the steering ball seat 14 is pressed on the horizontal supporting plate 16, the balancing weight 22 is fixed on the balancing weight supporting plate 21, so that the balancing weights on two sides of the rotating support 24 are the same.

further, the inductor A consists of a first contact plate 1, a second contact plate 2, an insulation plate 3, an insulation screw 4, a cooling water inlet pipe 5, a cooling water outlet pipe 6, a first transition lead 7, a second transition lead 8, a first spray pipe connecting plate 9, a second spray pipe connecting plate 10, a first quenching liquid spray pipe 11, a second quenching liquid spray pipe 12 and an effective heating lead 13;

The insulation plate 3 is fixed between the connection end surfaces of the first contact plate 1 and the second contact plate 2 through an insulation screw 4, the outer side walls of a first transition wire 7 and a second transition wire 8 are respectively fixed on the first contact plate 1 and the second contact plate 2, the cooling water inlet pipe 5 and the cooling water outlet pipe 6 are respectively communicated with one ends of the first transition wire 7 and the second transition wire 8, and the other ends of the first transition wire 7 and the second transition wire 8 are respectively communicated with two ends of an effective heating wire 13, so that the cooling water inlet pipe 5, the first transition wire 7, the effective heating wire 13, the second transition wire 8 and the cooling water outlet pipe 6 are sequentially communicated to form a circulating cooling water loop;

the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are respectively fixed on the first contact plate 1 and the second contact plate 2 through the first water spray pipe connecting plate 9 and the second water spray pipe connecting plate 10, and the water spray pipe directions of the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are both towards the inner surface quenching area of the steering ball head seat 14.

further, the gap X between the double-layer spiral heating wires at the effective heating end of the effective heating wire 13 is 0.4mm to 0.6mm, the vertical distance Y between the upper layer spiral wire of the double-layer spiral heating wire and the inner surface of the steering ball socket is 0.4mm to 0.6mm, and the vertical distance Z between the lower layer spiral wire of the double-layer spiral heating wire and the inner surface of the steering ball socket is 0.4mm to 0.6 mm.

further, the water spray pipes of the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are staggered front and back.

Further, the first contact plate 1, the second contact plate 2, the first spray pipe connecting plate 9 and the second spray pipe connecting plate 10 are formed by bending copper plates;

The first transition lead 7 and the second transition lead 8 are both made of hollow red copper square tubes;

The cooling water inlet pipe 5, the cooling water outlet pipe 6, the effective heating lead 13, the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are all formed by bending hollow red copper round pipes.

Further, in the rotating mechanism B, a quenching liquid outlet 25 is formed on one side wall of the groove bottom of the ball seat mounting groove of the rotating support 24.

further, the arc-shaped connecting plate 15 is respectively matched with three first threaded holes 26 uniformly distributed on the side wall above the rotating support 24 through three screws, so that the arc-shaped connecting plate is fixedly connected with the rotating support 24.

Further, the arc-shaped connecting plate 15, the horizontal supporting plate 16, the arc-shaped groove 17 and the pressing plate lower supporting plate 18 are fixed in a welding mode.

Further, the weight support plate 21 is fixed on the side wall of the rotating support 24 by a screw, and the counterweight 22 is fixed on the weight support plate 21 by a second bolt 23.

a quenching method of a quenching device for the inner surface of an automobile steering ball head seat comprises the following specific processes:

The method comprises the following steps: putting the end of the ball socket of the steering ball socket 14 into the ball socket mounting groove of the rotating support 24, putting the pull rod of the steering ball socket 14 into the arc-shaped grooves of the arc-shaped connecting plate 15 and the horizontal supporting plate 16 and attaching the pull rod to the arc-shaped grooves, firmly pressing the steering ball socket 14 on the horizontal supporting plate 16 through the pressing plate 19, and wrapping and limiting the end of the pull rod of the steering ball socket 14 in the arc-shaped groove 17;

Step two: starting the quenching machine tool, driving the rotating mechanism B to start to rotate rapidly by the rotating center of the quenching machine tool, driving the steering ball socket 14 to rise rapidly at the speed of 1800mm/min at the same time, enabling the inner surface of the ball socket of the steering ball socket 14 to move to the heating position of the effective heating lead 13 of the sensor A, stopping rising of the rotating center of the quenching machine tool, starting the sensor A to start conductive heating of the effective heating lead 13 and delaying for 1.1s, starting quenching and cooling when the conductive heating is delayed for 1.0s, spraying quenching cooling liquid to the quenching area of the inner surface of the ball socket of the steering ball socket 14 through the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12, and delaying for 5s in cooling;

step three: and (3) after the quenching cooling delay is finished, the rotating center of the quenching machine tool drives the steering ball socket 14 on the rotating mechanism B to stop rotating, and then the rotating center of the quenching machine tool drives the steering ball socket 14 on the rotating mechanism B to descend at the speed of 1000mm/min and takes down the steering ball socket 14 after quenching is finished, so that the quenching process is finished.

compared with the prior art, the invention has the beneficial effects that:

1. The quenching device for the inner surface of the automobile steering ball headstock adopts the matching use of the inductor and the rotating mechanism, so that the continuous, effective and uniform distribution of the hardened layers of the quenching part on the inner surface of the steering ball headstock is realized, and the surface hardness, the effective hardened layer depth and the quenching tissue of the inner surface of the steering ball headstock meet the requirements of relevant standards.

2. The quenching device for the inner surface of the automobile steering ball head seat adopts the inductor with the effective heating wire of a double-loop series structure aiming at the special structural shape of the inner surface of the steering ball head seat part, the outer diameter size of the double-loop effective wire of the inductor corresponds to the inner surface profile of the ball head seat, the shape and the size of the effective wire can be flexibly adjusted, and the quenching and heating process has strong pertinence and high efficiency.

3. the quenching device for the inner surface of the automobile steering ball headstock is designed with a rotating mechanism matched with an inductor aiming at the characteristic of an asymmetric structure that one end of a steering ball headstock part is provided with a pull rod, and a symmetric counterweight component is arranged on one side of the rotating mechanism, so that the steering ball headstock part and the whole quenching device are centered and rotate at a constant speed and are stable, the effective heating wire of the inductor and the gap between the effective heating wire and the inner surface of the ball headstock are ensured to be kept uniform and stable in the quenching and heating process, and the quenching process requirement and the relevant standard requirement are met.

4. according to the method for quenching the inner surface of the automobile steering ball head seat, aiming at the characteristic that the heating time of a quenching process method is short, the cooling time is designed to be 0.1s before the heating is stopped for cooling and starting, and 0.1s of lead time is reserved for spraying cooling water to the quenching surface in a water pipe and the air, so that when the heating is stopped, the cooling quenching is just carried out, the quenching time is more compact, and the actual quenching process effect is better.

5. The quenching device and the quenching method for the inner surface of the automobile steering ball head seat have the advantages of simple operation and high flexibility, and can be suitable for the induction quenching strengthening process and relevant standard requirements of parts similar to the automobile steering ball head seat.

drawings

FIG. 1 is a schematic view of the overall structure of a quenching device for the inner surface of a steering ball head seat of an automobile according to the invention;

FIG. 2 is a front view of the steering ball cup of the present invention;

FIG. 3 is a top view of the steering ball cup of the present invention;

FIG. 4 is a schematic structural diagram of an inductor in the quenching device for the inner surface of the steering ball seat of the automobile of the present invention;

FIG. 5 is a schematic axial cross-sectional view of an effective conductor of an inductor in the quenching device for an inner surface of a steering ball cup of an automobile according to the present invention;

FIG. 6 shows the installation structure of the turning ball seat on the rotating mechanism in the quenching device for the inner surface of the turning ball seat of the automobile

a schematic diagram;

FIG. 7 shows the effective wires of the sensor and the inner surface of the steering ball head seat of the quenching device for the inner surface of the steering ball head seat of the automobile according to the present invention

Surface matching structure schematic diagram.

In the figure:

a-inductor, B-rotating mechanism;

1 a first contact plate, 2 a second contact plate, 3 an insulating plate, 4 an insulating screw,

5 a cooling water inlet pipe, 6 a cooling water outlet pipe, 7 a first transition lead, 8 a second transition lead,

9 a first spray pipe connecting plate, 10 a second spray pipe connecting plate, 11 a first quenching liquid spray pipe, 12 a second quenching liquid spray pipe,

13 effective heating wires, 14 turning ball head seats, 15 arc-shaped connecting plates, 16 horizontal supporting plates,

17 arc-shaped groove, 18 pressing plate lower supporting plate, 19 pressing plate, 20 first bolt,

21 a balance weight supporting plate, 22 a balance weight block, 23 a second bolt, 24 a rotating support,

25 quenching liquid flows out of the hole, 26 a first threaded hole, 27 a second threaded hole and 28 tip matching holes.

Detailed Description

for clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:

As shown in fig. 2 and 3, the cross section of the inner surface of the ball cup of the steering ball cup 14 is circular arc, the diameter of the inner surface is smaller, and one end of the steering ball cup 14 is provided with a pull rod, so that the steering ball cup 14 is of a symmetrical structure along the axial direction of the inner surface of the ball cup, and in order to meet the quenching requirements of the steering ball cup 14 or similar parts with special structures, the invention provides a quenching device for the inner surface of the steering ball cup of an automobile.

As shown in fig. 1, the quenching device for the inner surface of the automobile steering ball head seat comprises an inductor a positioned above and a rotating mechanism B positioned below, the steering ball head seat 14 is installed on the rotating mechanism B, the lower heating end of the effective heating wire 13 of the inductor a is positioned in the steering ball head seat 14 and matched with the inner surface of the steering ball head seat 14, and the rotating mechanism B drives the steering ball head seat 14 to rotate so as to be matched with the effective heating wire 13 of the inductor a to quench the inner surface of the steering ball head seat 14.

as shown in fig. 1 and 4, the inductor a is composed of a first contact plate 1, a second contact plate 2, an insulation plate 3, an insulation screw 4, a cooling water inlet pipe 5, a cooling water outlet pipe 6, a first transition wire 7, a second transition wire 8, a first spray pipe connection plate 9, a second spray pipe connection plate 10, a first quenching liquid spray pipe 11, a second quenching liquid spray pipe 12 and an effective heating wire 13. The first contact plate 1 and the second contact plate 2 are respectively connected with the outer side walls of a first transition wire 7 and a second transition wire 8, and the inductor A is connected with two electrodes of the transformer through the first contact plate 1 and the second contact plate 2 to realize the conduction of an electric loop; the cooling water inlet pipe 5 and the cooling water outlet pipe 6 are respectively communicated with one ends of the first transition wire 7 and the second transition wire 8, and the other ends of the first transition wire 7 and the second transition wire 8 are respectively communicated with two ends of the effective heating wire 13, so that the cooling water inlet pipe 5, the first transition wire 7, the effective heating wire 13, the second transition wire 8 and the cooling water outlet pipe 6 are sequentially communicated to form a circulating cooling water loop.

The specific components and connection relationship of the inductor a are detailed as follows:

the structure of the first contact plate 1 is the same as that of the second contact plate 2, the first contact plate 1 and the second contact plate 2 are both formed by bending copper plates with the thickness of 4mm, the first contact plate 1 and the second contact plate 2 are symmetrically arranged and connected, the first contact plate 1 and the second contact plate 2 are respectively connected to positive and negative electrodes of a transformer, and therefore a conductive loop of an inductor A is connected to the positive and negative electrodes of the transformer, and the conductive loop of the inductor A is conducted; an insulating plate 3 is arranged between the connection end surfaces of the first contact plate 1 and the second contact plate 2, the insulating plate 3 is fixedly connected with the first contact plate 1 and the second contact plate 2 through insulating screws 4, and the insulating plate 3 is used for preventing the first contact plate 1 and the second contact plate 2 from being connected with each other to cause short circuit; the thickness of insulation board 3 is 2mm, and the material is polytetrafluoroethylene, the diameter of insulating screw 4 is 6mm, and the material is polytetrafluoroethylene.

and the insulating screw 4 is made of polytetrafluoroethylene insulating material.

the first transition wire 7 and the second transition wire 8 are identical in structure and symmetrically arranged on two sides of the first contact plate 1 and the second contact plate 2, the first transition wire 7 and the second transition wire 8 are both made of a hollow red copper square tube with the length multiplied by the width multiplied by the thickness of 16mm multiplied by 8mm multiplied by 1mm, the outer side wall of the first transition wire 7 is welded on the first contact plate 1, and the outer side wall of the second transition wire 8 is welded on the second contact plate 2.

the cooling water inlet pipe 5 and the cooling water outlet pipe 6 are identical in structure and symmetrically arranged on a first transition lead 7 and a second transition lead 8, and both the cooling water inlet pipe 5 and the cooling water outlet pipe 6 are made of hollow red copper round pipes with the outer diameter of 12mm and the wall thickness of 1 mm; wherein, the leading-in of cooling water is realized with the water inlet welding of first transition wire 7 to the delivery port of cooling inlet tube 5, and the leading-out of cooling water is realized with the delivery port welding of second transition wire 8 to the water inlet of cooling outlet pipe 6.

The effective heating wire 13 is formed by bending a hollow red copper round tube with the outer diameter of 4mm and the wall thickness of 0.5mm, one end of the effective heating wire 13 is welded with the water outlet of the first transition wire 7 to realize the introduction of cooling water, and the other end of the effective heating wire 13 is welded with the water inlet of the second transition wire 8 to realize the derivation of the cooling water; as shown in fig. 4 and 5, the heating end of the effective heating wire 13 is a double-layer spiral heating wire, and the double-layer spiral heating wires are connected in series; the effective heating wire 13 is responsible for heating the inner surface of the steering ball socket 14, so the outer contour shape of the double-layer spiral heating wire at the heating end of the effective heating wire 13 is matched with the inner surface shape of the steering ball socket 14; as shown in fig. 7, a gap X between the double-layer spiral heating wires at the heating end of the effective heating wire 13 is 0.4mm to 0.6mm, a vertical distance Y between the upper layer spiral wire of the double-layer spiral heating wire and the inner surface of the steering ball socket is 0.4mm to 0.6mm, and a vertical distance Z between the lower layer spiral wire of the double-layer spiral heating wire and the inner surface of the steering ball socket is 0.4mm to 0.6 mm. The structural size of the corresponding double-layer spiral heating wire can be adjusted according to the size of the inner surface of the steering ball head seat to be quenched.

in the conductive loop of the inductor a, current is led in through the first contact plate 1, then sequentially passes through the first transition wire 7 and the effective heating wire 13, wherein in the effective heating wire 13, the current sequentially passes through the first layer of spiral heating wire and the second layer of spiral heating wire which are connected in series, then passes through the second transition wire 8, and finally is led out from the second contact plate 2, so that the conduction of the electrical loop of the whole inductor a is realized.

In the cooling water loop of the inductor A, cooling water flows in through a water inlet of a cooling water inlet pipe 5, flows in through a first transition wire 7 to an effective heating wire 13, and passes through a second transition wire 8 and a cooling water outlet pipe 6 for the first time, and finally flows out from a water outlet of the cooling water outlet pipe 6; after the cooling water flows through the effective heating wire 13, the heat generated by the effective heating wire 13 in the heating process is taken away in time, the effective heating wire 13 is effectively cooled, the melting loss of the effective heating wire is avoided, and the whole inductor A can continuously and normally work.

the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are both made of hollow red copper round pipes with the outer diameter of 12mm and the wall thickness of 1 mm; the first spray pipe connecting plate 9 and the second spray pipe connecting plate 10 are both formed by bending copper plates with the thickness of 3 mm; the first quenching liquid water spray pipe 11 is welded on the first contact plate 1 through a first water spray pipe connecting plate 9, the second quenching liquid water spray pipe 12 is welded on the second contact plate 2 through a second water spray pipe connecting plate 10, the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are symmetrically arranged on two sides of the effective heating wire 13, the water spray pipe directions of the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 both face the inner surface quenching area of the steering ball head seat 14 corresponding to the heating end of the effective heating wire 13, so that quenching cooling liquid sprayed out through the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 is sprayed on the inner surface quenching area of the steering ball head seat 14, and cooling quenching after induction heating is realized; in addition, the water spray pipes of the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are staggered front and back, so that quenching cooling liquids sprayed by the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are staggered with each other, and the phenomenon that the two quenching cooling liquids are intersected to cause obstruction in the spraying process is avoided.

Based on the above composition and connection relationship of the inductor a, the installation and connection method of the inductor a is briefly described as follows:

A1, welding the first transition lead 7 and the second transition lead 8 with the effective heating lead 13 into a whole in a combined manner;

A2, combining and welding a cooling water inlet pipe 5 and a first transition wire 7 into a whole, and combining and welding a cooling water outlet pipe 6 and a second transition wire 8 into a whole;

a3, the first transition lead 7 and the first contact plate 1 are oppositely assembled and welded into a whole, and the second transition lead 8 and the second contact plate 2 are assembled and welded into a whole;

A4, fixedly mounting an insulating plate 3 between a first contact plate 1 and a second contact plate 2 by using an insulating screw 4;

a5, a first quenching liquid water spray pipe 11 and a first water spray pipe connecting plate 9 are combined and welded into a whole, and a second quenching liquid water spray pipe 12 and a second water spray pipe connecting plate 10 are combined and welded into a whole;

A6, combining and welding a first spray pipe connecting plate 9 and a first contact plate 1 into a whole, and combining and welding a second spray pipe connecting plate 10 and a second contact plate 2 into a whole;

in the welding process of the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12, the water spray directions of the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12 are adjusted to be staggered, so that the two cooling water streams are prevented from blocking each other in the middle of spraying.

as shown in fig. 1 and 6, the rotating mechanism B is composed of an arc-shaped connecting plate 15, a horizontal supporting plate 16, an arc-shaped groove 17, a pressing plate lower supporting plate 18, a pressing plate 19, a first bolt 20, a counterweight supporting plate 21, a counterweight 22, a second bolt 23 and a rotating support 24. The bottom of the ball head seat end of the steering ball head seat 14 is installed in a mounting groove at the top of the rotating support 24 in a matching manner, the pull rod end of the steering ball head seat 14 is horizontally supported and fixed on one side of the rotating support 24 through the horizontal support plate 16, the balance weight balance at two sides of the rotating support 24 is realized through a balance weight assembly consisting of a balance weight support plate 21, a balance weight 22 and a second bolt 23 on the other side of the rotating support 24, the steering ball head seat 14 is driven by the rotating mechanism B to rotate stably and is matched with the sensor A, the inner surface of the steering ball head seat 14 is quenched finally, and the hardened layers of the quenched parts on the inner surface of the steering.

The specific components and connection relationship of the rotating mechanism B are detailed as follows:

The rotation axis of the rotary support 24 and the central axis of the double-layer spiral heating wire of the effective heating wire 13 of the inductor A are coaxially arranged, the top end of the rotary support 24 is coaxially provided with a ball seat mounting groove, the bottom of the ball seat of the steering ball seat 14 is embedded and laid in the ball seat mounting groove, a gap is reserved between the bottom surface of the ball seat of the steering ball seat 14 and the bottom of the ball seat mounting groove, one side wall of the bottom of the ball seat mounting groove of the rotary support 24 is provided with a quenching liquid outlet 25, and the diameter of the quenching liquid outlet 25 is 6 mm. After the quenching liquid sprayed from the first quenching liquid spray pipe 11 and the second quenching liquid spray pipe 12 is sprayed to the quenching area on the inner surface of the turning ball seat 14, the quenching liquid flows out from the turning ball seat 14 and enters the ball seat mounting groove of the rotary support 24, and finally flows out smoothly through the quenching liquid outlet 25. A first threaded hole is formed in the side wall of the other side of the ball seat mounting groove of the rotary support 24 and is used for being fixedly connected with the arc-shaped connecting plate 15; the bottom of the rotating support 24 is coaxially provided with an apex matching hole 28, the apex matching hole 28 is used for being matched with a rotating apex of a quenching machine tool to be positioned and installed, a second threaded hole 27 is formed in the side wall corresponding to the apex matching hole 28 of the rotating support 24, and the rotating support 24 is connected with a screw with the size of M6 in a matching mode through the second threaded hole 27 to achieve fixed installation of the rotating apex of the quenching machine tool.

The horizontal supporting plate 16 is fixed on one side of the rotating support 24 through an arc-shaped connecting plate 15, wherein the arc-shaped connecting plate 15 is formed by bending a red copper plate with the thickness of 4mm, the arc-shaped connecting plate 15 is respectively matched with three first threaded holes uniformly distributed on the side wall above the rotating support 24 through three screws to realize the fixed connection with the rotating support 24, the horizontal supporting plate 16 is welded on the arc-shaped connecting plate 15 along the horizontal direction, and the horizontal supporting plate 16 is formed by bending the red copper plate with the thickness of 4 mm; the radius of the arc-shaped groove on the upper surfaces of the horizontal supporting plate 16 and the arc-shaped connecting plate 15 is the same as that of the pull rod end of the steering ball head seat 14, the arc-shaped groove between the horizontal supporting plate 16 and the arc-shaped connecting plate 15 is in smooth butt joint, after the steering ball head seat 14 is installed on the rotary support 24, the outer surface of the pull rod end of the steering ball head seat 14 is attached to the arc-shaped groove surface of the horizontal supporting plate 16 and the arc-shaped connecting plate 15, so that the horizontal support of the pull rod end of the steering ball head seat 14 is realized, and the.

The arc-shaped groove 17 is formed by bending a copper plate with the thickness of 4mm, the axial direction of the arc-shaped groove 17 is parallel to the axial direction of the horizontal supporting plate 16 and is welded and fixed at the end part of the horizontal supporting plate 16, the position of the arc-shaped groove 17 corresponds to the position of the tail end of a pull rod of the steering ball seat 14, the groove radius of the arc-shaped groove 17 is the same as the radius of the pull rod end of the steering ball seat 14, so that the tail end of the pull rod of the steering ball seat 14 is wrapped in the arc-shaped groove 17, and the steering ball.

The lower supporting plate 18 of the pressing plate is formed by bending a red copper plate with the thickness of 4mm, and the pressing plate 19 is a straight red copper plate with the thickness of 4 mm; two pressure plate lower supporting plates 18 are symmetrically welded and fixed on two sides of the horizontal supporting plate 16, the axial position of the pressure plate lower supporting plate 18 relative to the horizontal supporting plate 16 corresponds to the central position of the steering ball seat 14, the upper surface of the pressure plate lower supporting plate 18 is flush with the top surface of a pull rod of the steering ball seat 14, a pressure plate 19 is pressed on the top surface of the pull rod of the steering ball seat 14, and two ends of the pressure plate 19 are fixed on the pressure plate lower supporting plate 18 through first bolts 20, so that the steering ball seat 14 is firmly pressed on the horizontal supporting plate 16.

on the rotating mechanism, the horizontal axial positioning of the steering ball socket 14 is realized through the ball socket mounting groove of the rotating support 24, the horizontal rotation limiting of the steering ball socket 14 is realized through the arc-shaped groove 17, and the vertical limiting of the steering ball socket 14 is realized through the pressing plate lower supporting plate 18 and the pressing plate 19.

the counterweight component composed of the counterweight supporting plate 21, the counterweight block 22 and the second bolt 23 is arranged on the other side of the rotating support 24 in a central symmetry manner with the horizontal supporting plate 16, so that when the rotating mechanism drives the steering ball socket 14 to rotate, the rotating center of gravity of the rotating mechanism and the steering ball socket 14 is centered and rotates stably. Wherein, the balance weight supporting plate 21 is made of a copper plate with the thickness of 4mm, and the balance weight 22 is a steel cylindrical block; the balance weight supporting plate 21 is fixedly installed on the other side of the rotating support 24 through screws, the balance weight supporting plate 21 and the horizontal supporting plate 16 are arranged in a central symmetry mode about the rotating shaft of the rotating support 24, the balance weight 22 is fixedly installed on the balance weight supporting plate 21 through a second bolt, and the installation position of the balance weight 22 needs to meet the requirement of enabling balance weights on two sides of the rotating support 24 to reach balance.

Based on the above composition and connection relationship of the inductor a, the installation and connection method of the inductor a is briefly described as follows:

b1, fixing the arc-shaped connecting plate 15 on the rotating support 24 through the threaded hole 26 of the M4 by a screw;

B2, the arc horizontal supporting plate 16 and the arc groove surface radius of the arc groove 17 are the same as the pull rod radius of the steering ball head seat 14, the arc horizontal supporting plate 16 and the arc groove 17 are combined and welded into a whole, and the arc groove 17 is used for supporting the pull rod end of the steering ball head seat 14;

B3, the horizontal supporting plate 16 and the arc-shaped connecting plate 15 are combined and welded into a whole;

b4, the pressure plate lower supporting plate 18 and the horizontal supporting plate 16 are combined and welded into a whole;

B5, the pressure plate 19 is fixed on the pressure plate lower supporting plate 18 through the bolt 20 and is used for fixing the pull rod end of the steering ball socket 14;

B6, the other end of the rotating device supports the additional balancing weight 22 through the balancing weight supporting plate 21, and the balancing weight and the additional balancing weight are connected to the rotating support 24 through screws after being locked through bolts 23 so as to keep the center of gravity of the steering ball seat 14 and the rotating mechanism centered and stable in rotation;

By adopting the quenching device for the inner surface of the automobile steering ball head seat, the invention also discloses a quenching method for the inner surface of the automobile steering ball head seat, which comprises the following specific processes:

The method comprises the following steps: the ball socket base of the steering ball socket 14 is downwards placed into a ball socket mounting groove of a rotating support 24, a pull rod of the steering ball socket 14 is placed in arc-shaped grooves of an arc-shaped connecting plate 15 and a horizontal supporting plate 16 and is attached to the arc-shaped grooves, the steering ball socket 14 is stably pressed on the horizontal supporting plate 16 through a pressing plate 19, and the end part of the pull rod of the steering ball socket 14 is wrapped and limited in an arc-shaped groove 17;

Step two: starting the quenching machine tool, driving the rotating mechanism B to start to rotate rapidly by the rotating center of the quenching machine tool, driving the steering ball socket 14 to rise rapidly at the speed of 1800mm/min at the same time, enabling the inner surface of the ball socket of the steering ball socket 14 to move to the heating position of the effective heating lead 13 of the sensor A, stopping rising of the rotating center of the quenching machine tool, starting the sensor A to start conductive heating of the effective heating lead 13 and delaying for 1.1s, starting quenching and cooling when the conductive heating is delayed for 1.0s, spraying quenching cooling liquid to the quenching area of the inner surface of the ball socket of the steering ball socket 14 through the first quenching liquid water spray pipe 11 and the second quenching liquid water spray pipe 12, and delaying for 5s in cooling;

Step three: after the quenching cooling delay is finished, the rotating center of the quenching machine tool drives the steering ball socket 14 on the rotating mechanism B to stop rotating, then the rotating center of the quenching machine tool drives the steering ball socket 14 on the rotating mechanism B to descend to a position (in situ) where the workpiece is conveniently unloaded from the steering ball socket 14 at the speed of 1000mm/min, and the steering ball socket 14 after quenching is taken down, so that the quenching process is finished.

the technological parameters of the quenching method are detailed in the following table I:

Watch 1