A pin press height automatic control device

Abstract

The invention discloses an automatic control device for the press-fitting height of a pin shaft, which relates to the technical field of component control devices and comprises an upper mounting seat, wherein the bottom of the upper mounting seat is rotatably connected with a shaft rod, the bottom of the shaft rod is fixed with a mounting disc, and a positioning seat for placing the part to be press-fitted is arranged below the mounting disc; a punching component is mounted on the mounting disc, and the punching component is used to punch holes in the part to be press-fitted; a pressing component is also mounted on the mounting disc, and the pressing component is used to place and position the pin shaft; a measuring component is also mounted on the mounting disc, and the measuring component is used to measure the length of the pin shaft extending out of the part to be press-fitted; a conversion component is mounted on the bottom of the upper mounting seat, and the conversion component is used to drive the mounting disc to rotate, so as to switch the punching, pressing and measuring processes, and drive the operation of the punching component, the pressing component and the measuring component; the error accumulation caused by the difference in equipment accuracy between different processes is effectively avoided, the excess tolerance rate is reduced, and the error adjustment becomes simple and quick.

Description

Technical Field

[0001] The invention relates to the technical field of component control devices, and in particular to an automatic control device for the press-fitting height of a pin shaft. Background Art

[0002] The product requires that parts A and B be connected by a pin. The pin is pressed into the hole of part B by the equipment, and at the same time, the distance L1 between the end face of the pin and the end face of part B is guaranteed. The tolerance of this distance is L1±0.5mm. The original distance L1 is controlled by pressing a stable length L2 through a servo press. The distance L1 is generated by L2-part A length-part B length, and the distance L between the end face of the pin and the end face of part A is L1-part A length.

[0003] The drilling, pressing and testing of parts A and B are all carried out in different processes. Due to the different precision errors of components such as motors or pressing equipment in each process, the L1 distance is often out of tolerance. It is difficult to balance the precision error adjustment of different components in different processes, and it is difficult to inspect and repair. Not to mention the labor loss of transferring parts between processes, the processing efficiency is low, and many products are still scrapped every day. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes an automatic control device for the press-fit height of a pin shaft, comprising an upper mounting seat, a shaft rod is rotatably connected to the bottom of the upper mounting seat, a mounting disc is fixed to the bottom of the shaft rod, and a positioning seat for placing the parts to be press-fitted is arranged below the mounting disc;

[0005] A punching component is installed on the installation disc, and the punching component is used to punch holes in the parts to be pressed for subsequent press-fitting of the pin shaft;

[0006] A press-fitting component is also installed on the mounting disc, and the press-fitting component is used to place and position the pin shaft for subsequent press-fitting of the pin shaft;

[0007] The mounting disc is also equipped with a measuring component, which is used to measure the length of the pin extending out of the part to be pressed to ensure product quality;

[0008] A conversion component is installed at the bottom of the upper mounting seat. The conversion component is used to drive the mounting disc to rotate to switch the punching, pressing and measuring processes. The conversion component is also used to drive the operation of the punching component, the pressing component and the measuring component.

[0009] Furthermore, the punching component includes a downward rod A slidably connected to the mounting seat, the pressing component includes a downward rod B slidably connected to the mounting seat, and the measuring component includes a downward rod C slidably connected to the mounting seat, and the central angle of the corresponding mounting disc between any two of the downward rods A, B and C is 120 degrees.

[0010] Furthermore, the conversion component includes a stepper motor installed at the bottom of the upper mounting seat, the output end of the stepper motor is connected to a driving rod, an incomplete gear A is fixed on the outer side of the driving rod, and a middle shaft spur gear that can mesh with the incomplete gear A is fixed on the outer side of the shaft rod. The incomplete gear A rotates one circle to drive the middle shaft spur gear to rotate 120 degrees; an incomplete gear B is also fixed on the outer side of the driving rod, and an upper connecting rod rotatably connected to the upper mounting seat is provided on one side of the driving rod, a screw rod is fixed on the bottom of the upper connecting rod, and a lower connecting rod is fixed on the bottom of the screw rod. A press seat is provided between the mounting disc and the upper mounting seat, and the press seat is connected to the screw rod. A vertical rod slidably connected to the press seat is also fixed on the bottom of the upper mounting seat, and a speed change spur gear that can mesh with the incomplete gear B is fixed on the outer side of the upper connecting rod. When the incomplete gear A meshes with the middle shaft spur gear, the incomplete gear B does not mesh with the speed change spur gear. The incomplete gear B rotates one circle to drive the press seat to move once through the screw rod to move downward and then upward.

[0011] Furthermore, the bottom of the descending rod A extends to below the mounting disc, and the punching component also includes a motor seat fixed to the bottom of the descending rod A, a driving motor is installed at the bottom of the motor seat, a drill bit is connected to the output end of the driving motor, a tension spring A is fixed between the motor seat and the bottom of the mounting disc, and a motor contact switch is installed at the top of the descending rod A, and the motor contact switch is electrically connected to the driving motor.

[0012] Furthermore, the bottom of the downward rod B extends to the bottom of the mounting disc, and the pressing component also includes a positioning frame fixed to the bottom of the mounting disc, and a secondary pressing plate is slidably connected in the positioning frame. The bottom of the downward rod B is fixed to the secondary pressing plate, and a tension spring B is fixed between the secondary pressing plate and the bottom of the mounting disc. A secondary pressing strip is fixed to the bottom of the secondary pressing plate, and a pin clamp is fixed to the lower end of the positioning frame.

[0013] Furthermore, the pin shaft clamping member includes two semicircular plates fixed to the inner wall of the positioning frame, the two semicircular plates are arranged opposite to each other, a sliding groove is opened in the middle of the opposite side walls of the two semicircular plates, a contact block is slidably connected in the sliding groove, and the side walls adjacent to the two contact blocks are opened with semicircular holes, and the semicircular holes are guided with rounded corners, and a compression spring is fixed between the inner side of the contact block and the bottom of the sliding groove; a limiting tube is fixed on the top of the two semicircular plates as a whole.

[0014] Furthermore, the bottom of the downward rod C extends to below the mounting disc, and the measuring component also includes a horizontal frame fixed to the bottom of the downward rod C, a tension spring C is fixed between the top of the horizontal frame and the bottom of the mounting disc, a vertical frame is fixed to the bottom of one end of the horizontal frame, and a trigger switch A and a trigger switch B are respectively installed at the bottom of the horizontal frame and the bottom of the vertical frame. The trigger switch A and the trigger switch B are electrically connected to the stepper motor. When the trigger switch A and the trigger switch B are triggered at the same time, the stepper motor continues to operate. When only one of the trigger switch A and the trigger switch B is triggered, the stepper motor stops operating.

[0015] Furthermore, an alarm light is installed on the top of the horizontal frame, and the alarm light is electrically connected to the trigger switch A and the trigger switch B. When only one of the trigger switch A and the trigger switch B is triggered, the alarm light is activated.

[0016] Furthermore, the descending rod A, the descending rod B and the descending rod C are all square.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. Each process is completed in the same device, which effectively avoids the error accumulation caused by the difference in equipment accuracy between different processes and reduces the deviation rate; through the unified single stepper motor control system and transmission mechanism, the error adjustment becomes simple and fast, and the accuracy can be quickly restored by adjusting the control parameters of the stepper motor or calibrating related components, thereby reducing the repair time and cost.

[0019] 2. It reduces the transfer and waiting time between processes and significantly improves processing efficiency. At the same time, the precise measurement and feedback mechanism ensures the consistency of product quality and reduces the scrap rate caused by errors. This not only saves costs for the company, but also improves market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the parts A, B and the pin after press-fitting in the present invention;

[0022] Figure 3 It is a schematic diagram of the connection structure for installing the disc in the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the pin clamping member in the present invention.

[0024] The accompanying drawings are described as follows: 1. upper mounting seat; 2. shaft rod; 3. mounting disc; 4. conversion component; 41. stepping motor; 42. driving rod; 43. incomplete gear A; 44. middle shaft spur gear; 45. incomplete gear B; 46. upper connecting rod; 47. screw rod; 48. lower connecting rod; 49. press-fit seat; 410. vertical rod; 411. speed-changing spur gear; 5. punching component; 51. downward rod A; 52. motor seat; 53. driving motor; 54. drill bit; 55. tension spring A; 56. motor contact switch 1. The first part is the first part of the second part. The second part is the second part of the second part. The first part is the second part of the second part. The second part is the second part of the second part. The first part is the second part of the second part. The second part is the second part of the second part. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] like Figure 2 As shown, the product requires that part A11 and part B12 be connected by pin 10, and pin 10 is pressed into the holes of part A11 and part B12 by equipment, while ensuring the distance "L" between the end face of pin 10 and the end face of part A11.

[0029] Example 1

[0030] A pin press height automatic control device, such as Figure 1 , Figure 3 and Figure 4 As shown, it includes an upper mounting seat 1, the bottom of which is rotatably connected to a shaft rod 2, a mounting disc 3 is fixed to the bottom of the shaft rod 2, and a positioning seat for placing parts to be pressed is arranged below the mounting disc 3.

[0031] Among them, a press-fitting component 6 is also installed on the mounting disc 3, and the press-fitting component 6 is used to place and position the pin shaft 10 to facilitate the subsequent press-fitting of the pin shaft 10; the press-fitting component 6 includes a downward rod B61 slidably connected to the mounting seat, and the bottom of the downward rod B61 extends to the bottom of the mounting disc 3, and also includes a positioning frame 62 fixed to the bottom of the mounting disc 3, and a secondary press-fitting plate 63 is slidably connected in the positioning frame 62. The bottom of the downward rod B61 is fixed to the secondary press-fitting plate 63, and a tension spring B64 is fixed between the secondary press-fitting plate 63 and the bottom of the mounting disc 3. The bottom of the secondary press-fitting plate 63 is fixed There is a secondary pressure strip 65, and a pin clamp 8 is fixed to the lower end of the positioning frame 62; the pin clamp 8 includes two semicircular plates 81 fixed to the inner wall of the positioning frame 62, the two semicircular plates 81 are arranged opposite to each other, and a slide groove 82 is opened in the middle of the opposite side walls of the two semicircular plates 81, and a contact block 83 is slidably connected in the slide groove 82, and the side walls adjacent to the two contact blocks 83 are opened with semicircular holes 84, and the semicircular holes 84 are guided with rounded corners, and a compression spring 85 is fixed between the inner side of the contact block 83 and the bottom of the slide groove 82; the top of the two semicircular plates 81 as a whole is fixed with a limiting tube 86.

[0032] Example 2

[0033] like Figure 1 and Figure 3 As shown, on the basis of the above-mentioned embodiment 1, a punching component 5 is installed on the mounting disc 3, and the punching component 5 is used to punch holes in the parts to be pressed for subsequent pressing of the pin shaft 10; the punching component 5 includes a descending rod A51 slidably connected to the mounting seat, and the bottom of the descending rod A51 extends to the bottom of the mounting disc 3, and also includes a motor seat 52 fixed to the bottom of the descending rod A51, and a driving motor 53 is installed at the bottom of the motor seat 52, and a drill bit 54 is connected to the output end of the driving motor 53, and a tension spring A55 is fixed between the motor seat 52 and the bottom of the mounting disc 3, and a motor contact switch 56 is installed on the top of the descending rod A51, and the motor contact switch 56 is electrically connected to the driving motor 53; by adding the punching component 5, the integrated operation of the punching of parts and the pressing of the pin shaft 10 is realized, thereby improving the processing efficiency and precision.

[0034] Example 3

[0035] like Figure 1 and Figure 3As shown, on the basis of the above-mentioned embodiment 2, a measuring component 7 is further installed on the mounting disc 3, and the measuring component 7 is used to measure the length of the pin shaft 10 extending outside the part to be pressed to ensure product quality; the measuring component 7 includes a descending rod C71 slidably connected to the mounting seat, and the bottom of the descending rod C71 extends to the bottom of the mounting disc 3, and also includes a horizontal frame 72 fixed to the bottom of the descending rod C71, and a tension spring C73 is fixed between the top of the horizontal frame 72 and the bottom of the mounting disc 3, and a vertical frame 74 is fixed to the bottom of one end of the horizontal frame 72. A trigger switch A75 and a trigger switch B76 are respectively installed at the bottom of the horizontal frame 72 and the bottom of the vertical frame 74. The trigger switch A75 and the trigger switch B76 are electrically connected to the stepping motor 41. When the trigger When the switch A75 and the trigger switch B76 are triggered at the same time, the stepper motor 41 continues to operate. When only one of the trigger switch A75 and the trigger switch B76 is triggered, the stepper motor 41 stops operating (the distance between the trigger switch A75 and the trigger switch B76 is the distance L between the end face of the pin shaft 10 and the end face of the part A11). An alarm light 9 is installed on the top of the cross frame 72. The alarm light 9 is electrically connected to the trigger switch A75 and the trigger switch B76. When only one of the trigger switch A75 and the trigger switch B76 is triggered, the alarm light 9 is activated. The control here is a common technical means of the prior art and is not described here. By adding the measuring component 7, the accurate measurement and monitoring of the press-fitting height of the pin shaft 10 is achieved. When the press-fitting height does not meet the requirements, the stepper motor 41 stops operating and activates the alarm light 9, thereby avoiding the production of unqualified products.

[0036] Example 4

[0037] like Figure 1 and Figure 3As shown, on the basis of the above-mentioned embodiment 3, a conversion component 4 is installed at the bottom of the upper mounting seat 1, and the conversion component 4 is used to drive the mounting disc 3 to rotate so as to switch the punching, pressing and measuring processes. The conversion component 4 is also used to drive the operation of the punching component 5, the pressing component 6 and the measuring component 7; the conversion component 4 includes a stepper motor 41 installed at the bottom of the upper mounting seat 1, and the output end of the stepper motor 41 is connected to a driving rod 42, and an incomplete gear A43 is fixed to the outer side surface of the driving rod 42, and a central shaft spur gear 44 that can mesh with the incomplete gear A43 is fixed to the outer side surface of the shaft rod 2, and the incomplete gear A43 rotates one circle to drive the central shaft spur gear 44 to rotate 120 degrees; an incomplete gear B45 is also fixed to the outer side surface of the driving rod 42, and one side of the driving rod 42 is provided with a gear that is rotatably connected to the upper mounting seat 1 An upper connecting rod 46 is provided, a screw rod 47 is fixed at the bottom of the upper connecting rod 46, a lower connecting rod 48 is fixed at the bottom of the screw rod 47, a press-fitting seat 49 is arranged between the mounting disc 3 and the upper mounting seat 1, the press-fitting seat 49 is connected to the screw rod 47, a vertical rod 410 is also fixed at the bottom of the upper mounting seat 1 and is slidably connected to the press-fitting seat 49, a speed change spur gear 411 which can mesh with the incomplete gear B45 is fixed on the outer side surface of the upper connecting rod 46, when the incomplete gear A43 meshes with the middle shaft spur gear 44, the incomplete gear B45 does not mesh with the speed change spur gear 411, the incomplete gear B45 rotates one circle and drives the press-fitting seat 49 to move once through the screw rod 47, a displacement from first down to up; the conversion component 4 realizes the automatic switching and continuous processing of the punching, pressing and measuring processes, thereby improving the processing efficiency and precision.

[0038] Among them, the descending rod A51, the descending rod B61 and the descending rod C71 are all square, and the central angle of the corresponding installation disk 3 between any two of the descending rods A51, the descending rod B61 and the descending rod C71 is 120 degrees.

[0039] The working principle of the present invention is as follows:

[0040] Punching stage: place parts A11 and B12 on the positioning seats for placing the two parts, start the stepper motor 41 to drive the driving rod 42 to rotate, and then drive the incomplete gear A43 to rotate, the hobbing segment of the incomplete gear A43 engages with the middle shaft spur gear 44 to drive the middle shaft spur gear 44 to rotate 120 degrees (at this time, the incomplete gear B45 is not engaged with the speed change spur gear 411), and drives the mounting disc 3 to rotate, so that the punching component 5 runs to the top of the two parts, and the hobbing segment of the incomplete gear A43 is disengaged from the middle shaft spur gear 44.

[0041] The incomplete gear B45 rotates together with the driving rod 42. When the hobbing segment of the incomplete gear A43 is disengaged from the middle shaft spur gear 44, the hobbing segment of the incomplete gear B45 gradually meshes with the speed change spur gear 411, and then drives the upper connecting rod 46, the screw rod 47 and the lower connecting rod 48 to rotate through the speed change spur gear 411. During the rotation of the screw rod 47, the press-fitting seat 49 is driven downward. During the downward movement of the press-fitting seat 49, it gradually contacts the motor contact switch 56 on the downward rod A51. After the motor contact switch 56 is triggered, the driving motor 53 is started, and the driving motor 53 drives the drill bit 54 to rotate, and the press-fitting seat 49 drives the downward rod A51 and the motor seat 52 , the driving motor 53 and the drill bit 54 continue to move downward, and the tension spring A55 is gradually in a stressed and stretched state. When the drill bit 54 contacts the part A11, it starts to punch holes in the parts A11 and B12. When the press-fitting seat 49 moves to the tail end of the screw rod 47, the punching is completed. The press-fitting seat 49 gradually returns to its original position while moving upward. The resilience of the tension spring A55 drives the downward rod A51, the motor seat 52, the driving motor 53 and the drill bit 54 to return to their original positions. When the press-fitting seat 49 is disengaged from the motor contact switch 56, the driving motor 53 stops running. When the press-fitting seat 49 returns to its original position, the incomplete gear B45 is disengaged from the speed change spur gear 411, and the punching stage is completed.

[0042] Pressing stage of the pin 10: Before press-fitting, the pin 10 is inserted under the semicircular holes 84 of the two semicircular plates 81 in advance, and the inverted cone angle is used to facilitate insertion. During the plug-in process, the pin 10 squeezes the two contact blocks 83 toward both sides, and the compression springs 85 on both sides are compressed. The resilience of the compression springs 85 clamps the pin 10 so that the pin 10 will not fall after letting go. The pin 10 is inserted and passes through the limit tube 86 so that the pin 10 will not be offset during the subsequent press-fitting process. After the incomplete gear B45 is disengaged from the speed change spur gear 411, the hobbing section of the incomplete gear A43 gradually engages with the middle shaft spur gear 44, driving the middle shaft spur gear 44 to rotate 120 degrees, driving the installation disc 3 to rotate, so that the press-fitting component 6 runs to the top of the two parts, and the hobbing section of the incomplete gear A43 is disengaged from the middle shaft spur gear 44.

[0043] The hobbing segment of the incomplete gear B45 gradually meshes with the speed spur gear 411, and drives the press-fitting seat 49 downward through the screw rod 47. During the downward movement, the press-fitting seat 49 gradually contacts the downward rod B61 and pushes the downward rod B61, the auxiliary press-fitting plate 63 and the auxiliary press-fitting strip 65 downward. The tension spring B64 is in a tensioned state under force, and the auxiliary press-fitting strip 65 gradually contacts the pin 10 and pushes the pin 10 toward the punching position of the parts A11 and B12 until the pin 10 is inserted into the holes of the parts A11 and B12 to achieve the connection between the parts A11 and B12. The downward distance of the press-fitting seat 49 is fixed each time. By controlling the height of the positioning seat, the distance "L" between the end face of the pin 10 and the end face of the part A11 (that is, the distance L1 between the end face of the pin 10 and the end face of the part B12) can be effectively guaranteed. For the precision error, it is only necessary to control the precision error of the single stepping motor 41, which can be easily adjusted or repaired. Among them, the auxiliary pressing strip 65 can extend into the limiting tube 86 and the semicircular hole 84, so that the pin shaft 10 can be completely separated from the semicircular plate 81. After the pressing is completed, the pressing seat 49 gradually returns to its position, and the rebound force of the tension spring B64 drives the downward rod B61, the auxiliary pressing plate 63 and the auxiliary pressing strip 65 to return to their positions. When the pressing seat 49 returns to its original position, the incomplete gear B45 disengages from the speed change spur gear 411, and the pressing stage of the pin shaft 10 is completed.

[0044] Measuring stage: after the incomplete gear B45 is disengaged from the speed change spur gear 411, the hobbing segment of the incomplete gear A43 gradually engages with the middle shaft spur gear 44 again, driving the middle shaft spur gear 44 to rotate 120 degrees, driving the mounting disc 3 to rotate, so that the measuring component 7 moves to the top of the two parts, and the hobbing segment of the incomplete gear A43 is disengaged from the middle shaft spur gear 44.

[0045] The hobbing section of the incomplete gear B45 gradually meshes with the speed spur gear 411, and drives the press-fitting seat 49 downward through the screw rod 47. During the downward process, the press-fitting seat 49 gradually contacts the downward rod C71, and pushes the downward rod C71, the horizontal frame 72 and the vertical frame 74 downward. At this time, the tension spring C73 is under force and is in a tensioned state, wherein the trigger switch A75 on the horizontal frame 72 is used to contact the base of the pin shaft 10 after press-fitting, and the trigger switch B76 on the vertical frame 74 is used to contact the upper surface of the part A11; by setting the distance between the trigger switch A75 and the trigger switch B76 to be the distance L between the end face of the pin shaft 10 and the end face of the part A11, as the horizontal frame 72 and the vertical frame 74 descend to the lowest end, when the trigger switch A75 and the trigger switch B76 are in contact with each other, the trigger switch A75 and the trigger switch B76 are in contact with each other. When B76 is triggered at the same time, the distance between the end face of the pin 10 and the end face of the part A11 is L, and the stepper motor 41 continues to operate, driving the press-fitting seat 49 to return, and the resilience of the tension spring C73 drives the downward rod C71, the horizontal frame 72 and the vertical frame 74 to return, so that the parts A11, the parts B12 and the pin 10 as a whole can be taken out, the measurement stage is completed, and the parts are qualified; when the trigger switch A75 and the trigger switch B76 are only triggered individually, the stepper motor 41 stops running, and the alarm light 9 starts to remind the staff to take out the unqualified parts A11, the parts B12 and the pin 10 as a whole; in this way, the punching, pressing and measuring integrated processing of the parts A11, the parts B12 and the pin 10 can be continuously carried out.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A pin press height automatic control device, comprising an upper mounting seat (1), characterized in that: The bottom of the upper mounting seat (1) is rotatably connected to a shaft (2), a mounting disc (3) is fixed to the bottom of the shaft (2), and a positioning seat for placing a part to be pressed is provided below the mounting disc (3); The mounting disc (3) is provided with a punching component (5), which is used to punch holes in the parts to be pressed so as to facilitate the subsequent pressing of the pin shaft (10); the punching component (5) comprises a descending rod A (51) slidably connected to the mounting seat, the pressing component (6) comprises a descending rod B (61) slidably connected to the mounting seat, and the measuring component (7) comprises a descending rod C (71) slidably connected to the mounting seat, and the central angle between any two of the descending rods A (51), B (61) and C (71) corresponding to the mounting disc (3) is 120 degrees; A press-fitting component (6) is also mounted on the mounting disc (3), and the press-fitting component (6) is used to place and position the pin shaft (10) to facilitate subsequent press-fitting of the pin shaft (10); The mounting disc (3) is also provided with a measuring component (7), which is used to measure the length of the pin (10) extending outside the part to be pressed, so as to ensure product quality; A conversion component (4) is installed at the bottom of the upper mounting seat (1). The conversion component (4) is used to drive the mounting disc (3) to rotate so as to switch the punching, pressing and measuring processes. The conversion component (4) is also used to drive the punching component (5), the pressing component (6) and the measuring component (7) to operate. The conversion component (4) comprises a stepping motor (41) installed at the bottom of the upper mounting seat (1). The output end of the stepping motor (41) is connected to a driving rod (42). An incomplete gear A (43) is fixed to the outer side surface of the driving rod (42). A central shaft spur gear (44) that can mesh with the incomplete gear A (43) is fixed to the outer side surface of the shaft rod (2). The incomplete gear A (43) rotates one circle to drive the central shaft spur gear (44) to rotate 120 degrees. An incomplete gear B (45) is also fixed to the outer side surface of the driving rod (42). One side of the driving rod (42) An upper connecting rod (46) is provided which is rotatably connected to the upper mounting seat (1). A screw rod (47) is fixed at the bottom of the upper connecting rod (46). A lower connecting rod (48) is fixed at the bottom of the screw rod (47). A press-fit seat (49) is provided between the mounting disc (3) and the upper mounting seat (1). The press-fit seat (49) is connected to the screw rod (47). A vertical rod (410) which is slidably connected to the press-fit seat (49) is also fixed at the bottom of the upper mounting seat (1). A speed change spur gear (411) which can mesh with the incomplete gear B (45) is fixed on the outer side surface of the upper connecting rod (46). When the incomplete gear A (43) meshes with the middle shaft spur gear (44), the incomplete gear B (45) does not mesh with the speed change spur gear (411). The incomplete gear B (45) rotates one circle to drive the press-fit seat (49) to move once downward and then upward through the screw rod (47).

2. The pin press height automatic control device according to claim 1, characterized in that: The bottom of the descending rod A (51) extends to below the mounting disc (3); the punching component (5) further comprises a motor seat (52) fixed to the bottom of the descending rod A (51); a driving motor (53) is mounted at the bottom of the motor seat (52); an output end of the driving motor (53) is connected to a drill bit (54); a tension spring A (55) is fixed between the motor seat (52) and the bottom of the mounting disc (3); and a motor contact switch (56) is mounted at the top of the descending rod A (51); the motor contact switch (56) is electrically connected to the driving motor (53).

3. The pin press height automatic control device according to claim 1, characterized in that: The bottom of the descending rod B (61) extends to below the mounting disc (3); the pressing component (6) further comprises a positioning frame (62) fixed to the bottom of the mounting disc (3); a secondary pressing plate (63) is slidably connected in the positioning frame (62); the bottom of the descending rod B (61) is fixed to the secondary pressing plate (63); a tension spring B (64) is fixed between the secondary pressing plate (63) and the bottom of the mounting disc (3); a secondary pressing strip (65) is fixed to the bottom of the secondary pressing plate (63); and a pin clamp (8) is fixed to the lower end of the positioning frame (62).

4. The automatic control device for press-fitting height of a pin shaft according to claim 3, characterized in that: The pin shaft clamping member (8) comprises two semicircular plates (81) fixed to the inner wall of the positioning frame (62), the two semicircular plates (81) are arranged opposite to each other, a slide groove (82) is provided in the middle of the opposite side walls of the two semicircular plates (81), a contact block (83) is slidably connected in the slide groove (82), the adjacent side walls of the two contact blocks (83) are provided with a semicircular hole (84), the semicircular hole (84) has a rounded corner, and a compression spring (85) is fixed between the inner side of the contact block (83) and the bottom of the slide groove (82); a limiting tube (86) is fixed on the top of the two semicircular plates (81) as a whole.

5. The pin press-fit height automatic control device according to claim 1 is characterized in that: The bottom of the descending rod C (71) extends to below the mounting disc (3); the measuring component (7) further comprises a horizontal frame (72) fixed to the bottom of the descending rod C (71); a tension spring C (73) is fixed between the top of the horizontal frame (72) and the bottom of the mounting disc (3); a vertical frame (74) is fixed to the bottom of one end of the horizontal frame (72); a trigger switch A (75) and a trigger switch B (76) are respectively installed at the bottom of the horizontal frame (72) and the bottom of the vertical frame (74); the trigger switch A (75) and the trigger switch B (76) are electrically connected to the stepping motor (41); when the trigger switch A (75) and the trigger switch B (76) are triggered at the same time, the stepping motor (41) continues to operate; when only one of the trigger switch A (75) and the trigger switch B (76) is triggered, the stepping motor (41) stops operating.

6. The automatic control device for press-fitting height of a pin shaft according to claim 5, characterized in that: An alarm light (9) is installed on the top of the horizontal frame (72). The alarm light (9) is electrically connected to a trigger switch A (75) and a trigger switch B (76). When only one of the trigger switch A (75) and the trigger switch B (76) is triggered, the alarm light (9) is activated.

7. The automatic control device for press-fitting height of a pin shaft according to claim 1, characterized in that: The descending rod A (51), the descending rod B (61) and the descending rod C (71) are all square in shape.

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