阅读说明：本技术 一种凸轮轴端件正时刻线自动标印装置 (Automatic marking device for timing lines of end piece of camshaft ) 是由 刘安龙 张发全 于 2020-04-26 设计创作，主要内容包括：本发明提供了一种凸轮轴端件正时刻线自动标印装置,涉及凸轮轴加工设备技术领域,其包括打标机和固定在打标机工作台上的且可调节夹持松紧的夹持座,夹持座内转动设置有芯轴,芯轴的一端设置有端件连接部,芯轴的外侧设置有驱动端件转动的电动旋转机构。芯轴沿圆周均布有多个卡槽,夹持座上通过弹性滑杆连接有能够嵌入卡槽中的限位块,弹性滑杆远离限位块的一端设置有电磁吸附装置,电磁吸附装置上连接有断电延时器,弹性滑杆上设置有状态检测器,打标机、电动旋转机构、断电延时器和状态检测器均与控制器连接。解决了现有技术中在凸轮轴端件上标印正时刻线使用分度头确定夹角操作复杂效率低的问题。(The invention provides an automatic timing scribing and marking device for a camshaft end piece, and relates to the technical field of camshaft processing equipment. The dabber has a plurality of draw-in grooves along the circumference equipartition, is connected with the stopper that can imbed in the draw-in groove through elastic slide bar on the grip slipper, and the one end that the stopper was kept away from to elastic slide bar is provided with electromagnetic adsorption device, is connected with the outage delay timer on the electromagnetic adsorption device, is provided with the state detector on the elastic slide bar, and marking machine, electric rotary mechanism, outage delay timer and state detector all are connected with the controller. The problem of among the prior art mark timing line on the camshaft end part use the dividing head to confirm that the operation of contained angle is complicated inefficiency is solved.)

1. The automatic marking device for the timing scribed line of the end piece of the camshaft is characterized by comprising a marking machine and a clamping seat (1) which is fixed on a workbench of the marking machine and can adjust clamping tightness, wherein a mandrel (2) is rotationally arranged in the clamping seat (1), one end of the mandrel (2) is provided with an end piece connecting part (22), and an electric rotating mechanism (6) for driving the end piece to rotate is arranged on the outer side of the mandrel (2);

dabber (2) have a plurality of draw-in grooves (21) along the circumference equipartition, be connected with through elasticity slide bar (3) on grip slipper (1) and can imbed stopper (4) in draw-in groove (21), elasticity slide bar (3) are kept away from the one end of stopper (4) is provided with electromagnetic adsorption device (5), be connected with outage delayer on electromagnetic adsorption device (5), be provided with the state detector on elasticity slide bar (3), marking machine, electric rotary mechanism (6), outage delayer and state detector all are connected with the controller.

2. The automatic marking device for timing marks on end parts of camshafts according to claim 1, characterized in that said elastic sliding rod (3) comprises a sliding seat (31) fixed on said clamping seat (1) and a sliding rod (32) vertically slidably connected to said sliding seat (31), the top end and the bottom end of said sliding rod (32) penetrate through said sliding seat (31) and are fixedly connected with a magnetic plate (33) and said stopper (4), respectively, and a first spring (34) sleeved on said sliding rod (32) is connected between said stopper (4) and said sliding seat (31).

3. The automatic marking device for timing marks of end parts of camshafts according to claim 1, characterized in that said clamping base (1) comprises a bottom plate (11) and a U-shaped supporting plate (12) fixed on said bottom plate (11), a jacket (13) is detachably connected on said U-shaped supporting plate (12), said mandrel (2) is rotatably connected in said jacket (13), and one end of said jacket (13) is provided with an opening (134) for inserting an end part into said end part connecting part (22).

4. The automatic marking device for the timing scribed lines of the end part of the camshaft according to claim 3, wherein the jacket (13) comprises a jacket body (131), the jacket body (131) is provided with a shaft hole (135) which is in clearance fit with the mandrel (2), the axial two ends of the shaft hole (135) are detachably connected with a front baffle (132) and a rear baffle (133), the opening (134) is arranged on the rear baffle (133), the jacket body (131) is provided with at least one fracture (136) in the circumferential direction of the shaft hole (135), two sides of the fracture (136) are respectively fixed with connecting pieces (137), and the two connecting pieces (137) are adjustably connected through fasteners.

5. The automatic camshaft end piece timing reticle marking device according to claim 1, wherein the end piece connecting portion (22) comprises a limiting groove (221) for inserting an end piece end portion and a limiting pin (222) vertically fixed on a bottom surface of the limiting groove (221), and an end portion of the limiting pin (222) extends out of a bottom surface of the limiting groove.

6. The automatic marking device for timing lines on the end piece of a camshaft according to claim 1, characterized in that the electric rotating mechanism (6) comprises an adjustable pipe clamp (61) capable of radially sleeving and fixing the end piece and a motor (62) in transmission connection with the adjustable pipe clamp (61).

7. The camshaft end piece timing score line automatic marking device according to claim 6, wherein said adjustable tube clamp (61) comprises a first clamping ring (611) and a second clamping ring (612) which are oppositely arranged, said first clamping ring (611) is pivotally connected with one end of said second clamping ring (612) and the other end is detachably connected with the other end, a reinforcing ring (613) is elastically connected on the clamping surface of each of said first clamping ring (611) and said second clamping ring (612), and an adjusting screw (614) is connected between said reinforcing ring (613) and said first clamping ring (611) or said second clamping ring (612).

8. The camshaft end piece timing score line automatic marking device according to claim 7, wherein said adjusting screw (614) is threaded onto said first snap ring (611) or said second snap ring (612) in a radial direction, an end of said adjusting screw (614) abuts on said reinforcement ring (613), and said reinforcement ring (613) is connected to said first snap ring (611) or said second snap ring (612) by a second spring (615).

9. The automatic camshaft end part timing score marking device of claim 7 or 8, wherein a cushion (616) is fixedly attached to the clamping surface of the reinforcement ring (613).

10. The camshaft end part timing reticle automatic marking device according to claim 2, wherein the state detector is a pressure sensor mounted on top of the slide (31) and located below the magnetic plate (33).

Technical Field

The invention relates to the technical field of camshaft processing equipment, in particular to an automatic marking device for timing marks of a camshaft end piece.

Background

When the combined camshaft is installed in an engine, in order to ensure the included angle between each cylinder cam of the camshaft and the timing gear, a positioning pin hole is generally provided at the end part of the camshaft, and the included angle between each cylinder cam of the camshaft and the timing gear is ensured by ensuring the included angle between each cylinder cam of the camshaft and the pin hole and then connecting the pin hole of the end part and the timing gear through a positioning pin. When the camshaft is installed in an engine, in order to ensure the included angle between the cam and the timing gear, a timing line needs to be marked at the end piece position to ensure the timing of identifying the cam of each cylinder of the camshaft by an assembly line.

In general: the included angle of the cam of each cylinder of the three-cylinder engine cam shaft is 120 degrees, the included angle of the cam of each cylinder of the four-cylinder engine cam shaft is 90 degrees, and the included angle of the cam of each cylinder of the six-cylinder engine cam shaft is 60 degrees. In the prior art, an included angle is usually determined by adopting a dividing head, the dividing head is manually rotated or is controlled by adopting electromechanical control to separate the angle, a timing line is marked after the angle is determined, and the whole operation process is complex and low in efficiency.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an automatic marking device for timing marks on a camshaft end part, which solves the problems that the operation of determining included angles by using a dividing head is complex and the efficiency is low when the timing marks are marked on the camshaft end part in the prior art.

In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

the utility model provides an automatic marking device of camshaft end piece line in right time, it includes marking machine and fixes the grip slipper that just adjustable centre gripping elasticity on marking machine workstation, and the grip slipper internal rotation is provided with the dabber, and the one end of dabber is provided with end piece connecting portion, and the outside of dabber is provided with drive end piece pivoted electric rotary mechanism.

The dabber has a plurality of draw-in grooves along the circumference equipartition, is connected with the stopper that can imbed in the draw-in groove through elastic slide bar on the grip slipper, and the one end that the stopper was kept away from to elastic slide bar is provided with electromagnetic adsorption device, is connected with the outage delay timer on the electromagnetic adsorption device, is provided with the state detector on the elastic slide bar, and marking machine, electric rotary mechanism, outage delay timer and state detector all are connected with the controller.

The invention has the beneficial effects that: the mandrel can be fixedly connected with an end piece of the camshaft through an end piece connecting part, clamping grooves which are uniformly distributed on the circumference are processed on the mandrel in advance, the interval angle between every two adjacent clamping grooves is equal to the included angle of each cylinder of the camshaft to be marked with timing lines, the number of the clamping grooves is equal to the number of cylinders, the mandrel is rotated, and one clamping groove is correspondingly marked with one timing line on the end piece. When the marks are marked and lines are scribed, the dividing head is not needed to separate the angles, the operation steps are simplified, and the production efficiency is greatly improved.

The draw-in groove is used for the joint stopper, the stopper is connected on elastic sliding rod, it makes the stopper deviate from the draw-in groove to produce magnetic force through controlling the circular telegram of electromagnetic adsorption device and adsorb elastic sliding rod, the rotatory end piece of controller control electric rotary mechanism, the outage delay timer makes the draw-in groove rotate out and lets the electromagnetic adsorption device outage again behind the stopper below, lose absorbent elastic sliding rod and glide down under the elastic action, the stopper butt chucking until sliding into next draw-in groove on the outer wall of dabber, the dabber no longer rotates, the state detector falls into the draw-in groove to controller feedback stopper, then mark line in right time on the end piece through controller control marking machine. The whole process of marking and timing marking only needs to install the end piece on the device, and other separation angles, the rotating end piece and the marking are controlled by the controller and control the action time point, so that the labor intensity is reduced, the labor cost is saved, and the efficiency and the processing quality are improved.

Drawings

Fig. 1 is a schematic structural view of the camshaft end piece timing line automatic marking device with the marking machine removed.

FIG. 2 is an isometric view of a cartridge holder end piece.

Figure 3 is an isometric view of the mandrel of figure 1.

Fig. 4 is an isometric view of the stop block of fig. 1.

Fig. 5 is an isometric view of the collet body of fig. 2.

Fig. 6 and 7 are isometric views of the U-shaped support plate of fig. 2.

Figure 8 is a side view of the adjustable conduit clamp of figure 1.

FIG. 9 is an elevation view of the end piece.

Wherein, 1, a clamping seat; 11. a base plate; 12. a U-shaped support plate; 13. a jacket; 131. a jacket body; 132. a front baffle; 133. a tailgate; 134. an opening part; 135. a shaft hole; 136. breaking off; 137. connecting sheets; 2. a mandrel; 21. a card slot; 22. an end piece connecting portion; 221. a limiting groove; 222. a limit pin; 3. an elastic slide bar; 31. a slide base; 32. a slide bar; 33. a magnetic plate; 34. a first spring; 4. a limiting block; 5. an electromagnetic adsorption device; 6. an electric rotating mechanism; 61. an adjustable pipe clamp; 611. a first snap ring; 612. a second snap ring; 613. a reinforcement ring; 614. an adjusting screw; 615. a second spring; 616. a cushion pad; 62. a motor; 7. an end piece; 71. and (6) scribing lines in the right time.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.

As shown in fig. 1 and 2, the automatic timing reticle marking device for the camshaft end piece comprises a marking machine and a clamping base 1 which is fixed on a workbench of the marking machine and can adjust clamping tightness, a mandrel 2 is rotatably arranged in the clamping base 1, an end piece connecting part 22 is arranged at one end of the mandrel 2, and an electric rotating mechanism 6 for driving the end piece to rotate is arranged on the outer side of the mandrel 2.

Dabber 2 has a plurality of draw-in grooves 21 along the circumference equipartition, is connected with the stopper 4 that can imbed in the draw-in groove 21 through elastic slide bar 3 on the grip slipper 1, and the one end that stopper 4 was kept away from to elastic slide bar 3 is provided with electromagnetic adsorption device 5, is connected with the outage delay timer on the electromagnetic adsorption device 5, is provided with the state detector on the elastic slide bar 3, and marking machine, electric rotary mechanism 6, outage delay timer and state detector all are connected with the controller.

For a three-cylinder engine camshaft, the number of the clamping grooves 21 is 3, and the interval angle between every two adjacent clamping grooves 21 is 120 degrees; for a four-cylinder engine camshaft, the number of the clamping grooves 21 is 4, the interval angle between the adjacent clamping grooves 21 is 90 degrees, and so on. One mandrel 2 can only be used for marking timing marks on camshaft end parts of one specification, one set of corresponding mandrel 2 and clamping seat 1 can be manufactured according to camshaft end parts of different specifications, and one set of mandrel 2 can be shared and only the mandrel 2 is replaced.

As shown in fig. 1 and 3, the mandrel 2 in fig. 3 is used for marking a six-cylinder engine camshaft end piece, the mandrel 2 is cylindrical, and an end piece connecting part 22 is arranged at one end of the mandrel 2. The end piece connecting part 22 comprises a limiting groove 221 for inserting the end of the end piece and a limiting pin 222 vertically fixed on the bottom surface of the limiting groove 221, the end of the limiting pin 222 extends out of the bottom surface of the limiting groove, and the limiting groove 221 is a cylindrical counter bore. The part of the limit pin 222 protruding out of the bottom surface of the limit groove is inserted into the end piece, so that the end piece is fixedly connected with the mandrel 2. Six clamping grooves 21 are uniformly distributed on the cylindrical surface of the mandrel 2, the clamping grooves 21 preferably penetrate through the mandrel in the axial direction, and the cross section of each clamping groove 21 is preferably an arc surface. As shown in fig. 4, the bottom surface of the stopper 4 is a protruding strip corresponding to the shape of the slot 21, and the protruding strip can be inserted into the slot 21 to limit the rotation of the mandrel 2 relative to the holder 1.

Elastic sliding rod 3 is including being fixed in slide 31 and the vertical sliding connection slide bar 32 on slide 31 on holder 1, and the vertical direction of edge runs through on the slide 31 and is provided with the round hole that supplies slide bar 32 clearance to pass, and the top and the bottom of slide bar 32 run through behind the slide 31 respectively with magnetic sheet 33 and stopper 4 fixed connection, be connected with between stopper 4 and the slide 31 and cup joint first spring 34 on slide bar 32. The first spring 34 is a compression spring, and two ends of the first spring 34 are fixedly connected with the limiting block 4 and the sliding seat 31.

After the upper end of the sliding rod 32 is adsorbed by the electromagnetic adsorption device 5 and moves upwards, the first spring 34 is compressed, the first spring 34 is deformed, after the electromagnetic adsorption device 5 loses magnetic force, the sliding rod 32 moves downwards under the elastic action of the first spring 34, the bottom surface of the limiting block 4 abuts against the outer surface of the core shaft 2, and under the rotating process of the core shaft 2, if the clamping groove 21 is met, the sliding rod directly slides into the clamping groove 21, so that the end piece fixedly connected with the core shaft 2 can automatically stop rotating at each clamping groove 21 and can provide a feedback signal for a controller to start a marking machine to mark, and the machining process is quicker and smoother.

As shown in fig. 2, the holder 1 includes a bottom plate 11 and a U-shaped support plate 12 fixed on the bottom plate 11, and the bottom plate 11 is used for connecting with a workbench of a marking machine. Two U-shaped support plates 12 are connected to the bottom plate 11 at intervals through threaded fasteners and are respectively used for supporting a jacket 13 and an end piece, wherein one U-shaped support plate 12 is used for installing the jacket 13, as shown in FIG. 6; another U-shaped support plate 12 is used to support the outer end of the end piece 7, as shown in fig. 7.

As shown in fig. 1, 2 and 5, the collet 13 includes a collet body 131, a shaft hole 135 which is in clearance fit with the mandrel 2 is provided on the collet body 131, a front baffle 132 and a rear baffle 133 are detachably connected to both axial ends of the shaft hole 135 through a threaded fastener, and an opening 134 through which the end piece is inserted into the end piece connecting portion 22 is formed in the rear baffle 133. The collet body 131 is provided with at least one fracture 136 in the circumferential direction of the shaft hole 135, the fracture 136 means that the side wall of the shaft hole 135 is broken at one position to form two free ends, a connecting piece 137 is vertically fixed on each free end, and the two connecting pieces 137 are adjustably connected through a set screw. The distance between the two connecting sheets is controlled by adjusting the tightness of the set screw, so that the purpose of adjusting the inner diameter of the shaft hole 135 is achieved.

As shown in fig. 1, the electric rotating mechanism 6 includes an adjustable pipe clamp 61 capable of radially sleeving and fixing the end piece, and a motor 62 in transmission connection with the adjustable pipe clamp 61, wherein the motor 62 is mounted on the bottom plate 11. Preferably, as shown in fig. 8, the adjustable pipe clamp 61 includes a first snap ring 611 and a second snap ring 612 which are oppositely arranged, and the first snap ring 611 and the second snap ring 612 can enclose a complete circle. The first snap ring 611 is pivotally connected to one end of the second snap ring 612, and the other end of the first snap ring 611 is detachably connected to the other end of the second snap ring 612, similar to a clip style, a reinforcing ring 613 is elastically connected to both clamping surfaces (inner arc surfaces) of the first snap ring 611 and the second snap ring 612, and the reinforcing ring 613 is in a fan-ring shape concentric with the first snap ring 611 or the second snap ring 612.

An adjusting screw 614 is connected between the first snap ring 611 or the second snap ring 612 and the reinforcing ring 613 at the corresponding position, the adjusting screw 614 is connected to the first snap ring 611 or the second snap ring 612 along the radial direction through threads, the end of the adjusting screw 614 abuts against the reinforcing ring 613, the reinforcing ring 613 is connected to the first snap ring 611 or the second snap ring 612 through a second spring 615, and the second spring 615 is symmetrically distributed on two sides of the adjusting screw 614. A cushion 616 is fixedly connected to the clamping surface of the reinforcing ring 613, and the cushion 616 is a rubber pad, which is not only used for increasing the friction force at the clamping position, but also can prevent the reinforcing ring 613 from excessively extruding the end piece to affect the surface quality of the end piece.

The second spring 615 is a tension spring, the first snap ring 611 and the second snap ring 612 can be pushed to move towards the center of a circle by screwing the adjusting screw 614, the end piece is tightened, meanwhile, the second spring 615 is pulled to deform, and when the adjusting screw 614 is unscrewed, the first snap ring 611 and the second snap ring 612 move towards the direction far away from the center of a circle under the action of the elastic force of the second spring 615.

The output shaft of the motor 62 is fixedly sleeved with a connecting ring, the connecting ring is fixedly connected with a second clamping ring 612 positioned below through the connecting block, and the output shaft of the motor 62 and the adjustable pipe clamp 61 are coaxially arranged. The motor 62 is a speed reducing motor, and the high rotating speed of the motor is converted into a cam included angle through the speed reducer, and the cam included angle can be adjusted through the rotation of the pipe clamp 61. The motor 62 only drives the end piece to rotate a certain angle, and the rotating speed is slow, so that the rotation precision is not required to be good.

The state detector is a pressure sensor which is arranged on the top of the sliding seat 31 and is positioned below the magnetic plate 33, the top surface of the pressure sensor is flush with the top surface of the sliding seat 31, the pressure sensor is preferably an Scutellaria membrane box type pull pressure sensor SK-MH102, the controller is preferably an stm32f103zet6 single chip microcomputer, the marking machine is preferably a Hua worker L SF20Y cabinet type laser marking machine, a start-stop line of the marking machine is connected to the output end of the controller, and the start-stop of the marking machine is controlled through the controller.

The electromagnetic adsorption device 5 is a sucker type electromagnet, and the magnetic force disappears when the electromagnetic adsorption device is powered on to generate magnetic force. The circular telegram of controller control electro-magnet, through outage delay unit time delay outage after the circular telegram, the outage delay unit adopts time delay relay to realize, outage delay time avoids the electro-magnet outage too fast, stopper 4 can fall into same draw-in groove, time delay time only need guarantee that the outer wall of dabber 2 rotates stopper 4 below, lose behind the absorption of electro-magnet stopper 4 whereabouts butt on the outer face of cylinder of dabber 2, along with the continuation of dabber 2 rotate stopper 4 below with next draw-in groove 21 and let stopper 4 slide in.

The process of using the device to carry out timing line marking on the end part of the camshaft comprises the following steps: one end of the end piece is inserted into the end piece connecting portion 22 and fixed, the other end of the end piece is positioned in the second snap ring 612, the first snap ring 611 and the second snap ring 612 are covered and fixed, and the end piece is tightened by rotating the adjusting screw 614. Adjusting a laser port of a marking machine to be aligned to the outer cylindrical surface of a cam of a end piece, clamping a limiting block 4 in one of clamping grooves 21 in an initial state, pressing a start button, marking a first timing line by the marking machine, starting working timing by a timer in a controller, controlling an electromagnet to be electrified by the controller to adsorb a magnetic plate 33 to enable the limiting block 4 to be separated from the clamping groove 21 after reaching preset time, electrifying a motor 62 by the controller immediately after electrifying the electromagnet to enable the limiting block 4 to start rotating just after being separated from a clamping groove 21 mandrel 2, enabling the limiting block 4 to be abutted against the outer cylindrical surface of the mandrel 2 until sliding into the next clamping groove 21 under the action of a power-off delayer and an elastic sliding rod 3, enabling the magnetic plate 33 to move downwards to extrude a pressure sensor to generate an electric signal to the controller after the limiting block 4 slides into the clamping groove 21, controlling the motor 62 to stop working and simultaneously controlling marking by the controller, and then repeating the process until the marking times of the marking machine reach a preset value. As shown in fig. 9, which is a front view of the end piece 7 after marking, the timing mark lines 71 are horizontal lines, numbers on the horizontal lines represent "5" for timing mark lines of a 5-cylinder camshaft, and numbers "3" for timing mark lines of a 3-cylinder camshaft.