阅读说明：本技术 一种铍青铜接触簧片热处理定位工装及利用该工装进行的热处理工艺 (Beryllium bronze contact reed heat treatment positioning tool and heat treatment process using same ) 是由 田叶青 于 2019-09-30 设计创作，主要内容包括：本发明提供的一种铍青铜接触簧片热处理定位工装及利用该工装进行的热处理工艺,包括上定型块、下定型块、定位销；所述上定型块和下定型块之间通过螺栓锁紧,所述上定型块和下定型块的结合面上形状与簧片形状相同,下定型块加工有对簧片进行定位的塔子槽。本发明通过热处理定型工装,使接触簧片均匀受力以保证角度,并通过热处理参数的控制,保证其硬度值,且具有良好的弹性,达到角度定型的目的；热处理后,并通过角度检测工装,实现角度的快捷、准确检测。(the invention provides a beryllium bronze contact reed heat treatment positioning tool and a heat treatment process using the same, wherein the tool comprises an upper shaping block, a lower shaping block and a positioning pin; the upper shaping block and the lower shaping block are locked through bolts, the shape of the upper combining surface of the upper shaping block and the lower shaping block is the same as that of the reed, and a tower groove for positioning the reed is processed in the lower shaping block. According to the invention, through the heat treatment shaping tool, the contact spring is uniformly stressed to ensure the angle, and through the control of heat treatment parameters, the hardness value of the contact spring is ensured, and the contact spring has good elasticity, so that the purpose of shaping the angle is achieved; after heat treatment, the angle is quickly and accurately detected through the angle detection tool.)

1. The utility model provides a beryllium bronze contact reed thermal treatment positioning fixture, includes last shaping block (1), lower shaping block (2), locating pin (3), its characterized in that: the upper shaping block (1) and the lower shaping block (2) are locked through bolts, the shape of the upper combining surface of the upper shaping block (1) and the lower shaping block (2) is the same as that of the reed (8), and the lower shaping block (2) is provided with a tower groove (21) for positioning the reed (8).

2. The beryllium bronze contact spring heat treatment positioning fixture of claim 1, wherein: the edge of the upper shaping block (1) is provided with a plurality of through holes, two ends of the upper shaping block (1) are processed into planes, and the planes at the two ends are connected through a section with the same shape as the reed (8).

3. the beryllium bronze contact spring heat treatment positioning fixture of claim 1, wherein: the edge of the lower shaping block (2) is fixedly connected with a positioning pin (3) and a screw rod (4), the positions of the positioning pin (3) and the screw rod (4) are respectively in one-to-one correspondence with through holes in the upper shaping block (1), two ends of the lower shaping block (2) are machined to be planes attached to two end planes of the upper shaping block (1), and the middle of the lower shaping block (2) is machined to be a cross section with the same shape as the upper shaping block (1).

4. the beryllium bronze contact spring heat treatment positioning fixture of claim 1, wherein: and a groove is processed at the bending part of the reed (8) on the upper shaping block (1).

5. The beryllium bronze contact spring heat treatment positioning fixture of claim 1, wherein: the tower groove (21) is processed at a position matched with the tower (9) on the lower shaping block (2).

6. A beryllium bronze contact reed heat treatment process comprises the following steps:

s1, soaking the reed by using a cleaning agent;

s2, wiping the reed with a cleaning agent and then naturally drying;

S3, placing the reed into a positioning tool;

S4, placing the positioning tool with the reed in a vacuum furnace for heat treatment;

And S5, detecting the angle of the reed by using an angle detection device.

7. the beryllium bronze contact spring thermal treatment process according to claim 6, wherein: and the cleaning agent A in the S1 and the S2 is acetone.

8. The beryllium bronze contact spring thermal treatment process according to claim 6, wherein: the clamping step of the reed in the S3 is as follows:

S31, a plurality of reeds (8) are arranged in the lower shaping block (2), the tower (9) is clamped in the tower groove (21), and the reeds cannot be extruded mutually;

S32, covering the upper shaping block (1) on the lower shaping block (2), and matching the through hole on the upper shaping block (1) with the bolt and the positioning pin;

and S33, screwing a nut on the bolt.

9. The beryllium bronze contact spring thermal treatment process according to claim 6, wherein: the heat treatment step in the S screw (4) is as follows:

s41, raising the furnace temperature to 280 ℃ for 30-45 min;

S42, preserving heat at 280 ℃ for 150 +/-base (5) min;

And S43, stopping heating, cooling to below 50 ℃ along with the vacuum furnace, and discharging.

10. The beryllium bronze contact spring thermal treatment process according to claim 6, wherein: detection device includes stopper (6), and the up end both ends processing of stopper (6) are the different planes of height, is connected through being connected the face the same with reed (8) shape between the plane of both ends, and high plane and be connected and process between the face and have locating pin (3), are fixed with on the low plane and shape piece (1), go up shape piece (1) and be provided with the gap the same with reed (8) one end shape between the face, and the gap width slightly is greater than the width of reed (8).

Technical Field

The invention relates to a beryllium bronze contact reed heat treatment positioning tool and a heat treatment process using the same.

Background

the shape of the contact spring plate is shown in figure 6, the thickness is 0.15mm, and the folding edge of the metal plate pliers forms a 300-degree angle and a lug. Through the thermal treatment quenching and tempering, guarantee hardness requirement and good elasticity easily, but the angle is difficult to guarantee, will directly influence safety actuator's performance like this:

1. when the angle deviation is large, the eccentric wheel cannot be in contact with the contact reed, so that the contact reed cannot be in contact with the outgoing point, the circuit is in a short-circuit state, the execution mechanism cannot execute instructions, and the function is lost;

2. When the angle deviation is small, the eccentric wheel is in poor contact with the contact reed, so that the contact reed has small pressure on the contact and cannot be in good contact with the contact, and the performance of the safety actuating mechanism is finally influenced.

In addition, because the part is little and thin, different testing results can appear when the angle detects, and not only the complex operation efficiency is not high, causes moreover that the judgement is not objective, appears the erroneous judgement:

1. Different inspectors have different qualification rates;

2. The same person, the same part can appear qualified and unqualified phenomenon.

Disclosure of Invention

in order to solve the technical problem, the invention provides a beryllium bronze contact reed heat treatment positioning tool and a heat treatment process using the same.

The invention is realized by the following technical scheme.

the invention provides a beryllium bronze contact reed heat treatment positioning tool and a heat treatment process using the same, wherein the tool comprises an upper shaping block, a lower shaping block and a positioning pin; the upper shaping block and the lower shaping block are locked through bolts, the shape of the upper combining surface of the upper shaping block and the lower shaping block is the same as that of the reed, and a tower groove for positioning the reed is processed in the lower shaping block.

the edge of the upper shaping block is provided with a plurality of through holes, two ends of the upper shaping block are processed into planes, and the planes at the two ends are connected through a section with the same shape as the reed.

The edge of the lower shaping block is fixedly connected with a positioning pin and a screw rod, the positions of the positioning pin and the screw rod are respectively in one-to-one correspondence with the through holes on the upper shaping block, two ends of the lower shaping block are processed into planes which are attached to two end planes of the upper shaping block, and the middle part of the lower shaping block is processed into a section which is the same as the shape of the upper shaping block.

and a groove is processed at the bending part of the reed on the upper shaping block.

the tower groove is processed at the position matched with the tower on the lower shaping block.

the heat treatment process of the beryllium bronze contact reed comprises the following steps:

s1, soaking the reed by using a cleaning agent;

s2, wiping the reed with a cleaning agent and then naturally drying;

s3, placing the reed into a positioning tool;

s4, placing the positioning tool with the reed in a vacuum furnace for heat treatment;

and S5, detecting the angle of the reed by using an angle detection device.

and the cleaning agent A in the S1 and the S2 is acetone.

the clamping step of the reed in the S3 is as follows:

S31, a plurality of reeds are arranged in the lower shaping block, the tower clamp is inserted into the tower groove, and the reeds cannot be extruded mutually;

s32, covering the upper shaping block on the lower shaping block, wherein the through hole on the upper shaping block is matched with the bolt and the positioning pin;

and S33, screwing a nut on the bolt.

the heat treatment step in the S screw rod is as follows:

S41, raising the furnace temperature to 280 ℃ for 30-45 min;

S42, preserving heat at 280 ℃ for 150 +/-base min;

s43, stopping heating, cooling to below 50 ℃ along with the vacuum furnace, discharging,

the detection device comprises a limiting block, the two ends of the upper end face of the limiting block are processed into planes with different heights, the planes at the two ends are connected through a connecting face with the same shape as the reed, a positioning pin is processed between the high plane and the connecting face, an upper shaping block is fixed on the low plane, a gap with the same shape as one end of the reed is arranged between the upper shaping block and the connecting face, and the width of the gap is slightly larger than the width of the reed.

The invention has the beneficial effects that: the contact spring is uniformly stressed by a heat treatment shaping tool to ensure the angle, the hardness value is ensured by controlling heat treatment parameters, and the contact spring has good elasticity to achieve the purpose of shaping the angle; after heat treatment, the angle is quickly and accurately detected through the angle detection tool.

Drawings

FIG. 1 is a schematic view of the positioning fixture of the present invention;

FIG. 2 is a schematic view of the upper modular block structure of the present invention;

FIG. 3 is a schematic view of the lower modular block structure of the present invention;

FIG. 4 is a schematic view of the FIG. 3A directional structure of the present invention;

FIG. 5 is a schematic structural diagram of the angle detecting device of the present invention;

FIG. 6 is a schematic view of the reed construction of the present invention;

in the figure: 1-upper shaping block, 2-lower shaping block, 21-tower groove, 3-positioning pin, 4-screw, 5-base, 6-limiting block, 7-positioning groove, 8-reed and 9-tower.

Detailed Description

the technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

a beryllium bronze contact reed heat treatment positioning tool and a heat treatment process using the tool comprise an upper shaping block 1, a lower shaping block 2 and a positioning pin 3; the upper shaping block 1 and the lower shaping block 2 are locked through bolts, the shape of the upper combining surface of the upper shaping block 1 and the lower shaping block 2 is the same as that of the reed 8, and the lower shaping block 2 is provided with a tower groove 21 for positioning the reed 8.

the edge of the upper shaping block 1 is provided with a plurality of through holes, two ends of the upper shaping block 1 are processed into planes, and the planes at the two ends are connected through a section with the same shape as the reed 8.

the edge of the lower shaping block 2 is fixedly connected with a positioning pin 3 and a screw rod 4, the positions of the positioning pin 3 and the screw rod 4 are respectively in one-to-one correspondence with through holes in the upper shaping block 1, two ends of the lower shaping block 2 are processed into planes attached to two end planes of the upper shaping block 1, and the middle of the lower shaping block 2 is processed into a cross section with the same shape as the upper shaping block 1.

and a groove is processed at the bending part of the reed 8 on the upper shaping block 1.

the tower slots 21 are machined in positions that match the towers 9 on the lower modular block 2.

the thermal treatment process of the beryllium bronze contact reed is S1, and the reed is soaked by using a cleaning agent;

s2, wiping the reed with a cleaning agent and then naturally drying;

s3, placing the reed into a positioning tool;

s4, placing the positioning tool with the reed in a vacuum furnace for heat treatment;

and S5, detecting the angle of the reed by using an angle detection device.

And the cleaning agent A in the S1 and the S2 is acetone.

The clamping step of the reed in the S3 is as follows:

s31, a plurality of reeds 8 are arranged in the lower shaping block 2, the tower 9 is clamped in the tower groove 21, and the reeds cannot be mutually extruded;

S32, covering the upper shaping block 1 on the lower shaping block 2, and matching the through hole on the upper shaping block 1 with the bolt and the positioning pin;

And S33, screwing a nut on the bolt.

the heat treatment step in the S screw rod 4 is as follows:

S41, raising the furnace temperature to 280 ℃ for 30-45 min;

S42, preserving heat at 280 ℃ for 5min on a 150 +/-base;

s43, stopping heating, cooling to below 50 ℃ along with the vacuum furnace, discharging,

Detection device includes stopper 6, and stopper 6's up end both ends processing is the different plane of height, is connected through being connected the face the same with reed 8 shape between the plane of both ends, and high plane and being connected the face between processing have locating pin 3, are fixed with on the low plane and stereotype piece 1, go up stereotype piece 1 and be provided with the gap the same with reed 8 one end shape between the face, and the gap width slightly is greater than the width of reed 8.