Automatic piston pin hole machining and positioning device

Abstract

The invention relates to the technical field of piston pin holes, and discloses an automatic piston pin hole machining and positioning device which comprises a machine body, a linear motor is fixedly connected to the inner surface of the machine body, a base is fixedly connected to the moving end of the linear motor, a supporting plate is fixedly connected to the upper surface of the base, and a through groove is formed in the inner side of the supporting plate; the top end of the supporting plate is fixedly connected with a hydraulic machine, the bottom end of the hydraulic machine is fixedly connected with a top plate, and the top plate is used for rapidly fixing a piston. The piston is pressed by the top plate, so that the piston is fixed, the stability of a pin hole is improved, and the mold base slides obliquely, so that the supporting radius of the mold base is adjusted, and pistons of different sizes can be conveniently positioned; and after the bottom end of the positioning frame makes contact with the piston, the positioning frame rotates along the hinged position of the positioning frame and the top plate and pulls the elastic piece to be unfolded, the positioning frame is tightly attached to the surface of the piston under the influence of the elastic force of the elastic piece, and the stability and applicability of piston fixing are further improved.

Description

Technical Field

[0001] This invention relates to the field of piston pin hole technology, specifically to an automatic piston pin hole machining and positioning device. Background Technology

[0002] As a core component of the engine, the piston requires extremely high precision in the machining of its pin holes. Traditional machining often relies on manual alignment and fixing, which results in problems such as low positioning accuracy, poor consistency, and low production efficiency. Although the existing technology has solved the problem of piston positioning, it is difficult to machine pin holes for pistons of different sizes, resulting in low applicability and economic benefits of the device.

[0003] Patent CN219093725U discloses an automatic piston pin hole machining and positioning device. The main body of this patent is fixedly mounted on top of a base. Two fixing blocks are fixedly connected to both sides of the main body, and support rods are fixedly connected to the top of the two fixing blocks. A top plate is fixedly connected to the top of the two support rods, and a motor is fixedly mounted on the top plate. The motor drives a reciprocating screw below to rotate, and then connects to an external power source to start an electric telescopic rod. The electric telescopic rod pushes the drill bit below to move. Using a vertical fixing device above, the piston is clamped, and then the piston is machined in the positioning holes at fixed positions on both sides. This reduces piston offset and makes the drilling position more accurate, ultimately reducing the occurrence of pistons that cannot be used after drilling with the automatic piston pin hole machining and positioning device. Although this patent solves the above problems, it still has the problem of inconvenience in machining pin holes for pistons of different sizes. Therefore, an automatic piston pin hole machining and positioning device is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic piston pin hole machining and positioning device to address the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an automatic piston pin hole machining and positioning device, comprising: The machine body has a linear motor fixedly connected to its inner surface, a base fixedly connected to the moving end of the linear motor, a support plate fixedly connected to the upper surface of the base, a through groove opened on the inner side of the support plate, a hydraulic press fixedly connected to the top of the support plate, and a top plate fixedly connected to the bottom of the hydraulic press. The top plate is used to quickly fix the piston. A quick-release device is installed on the top of the machine body. The quick-release device is used to avoid frequent replacement of the cutting head when processing different types of pistons, which would reduce processing efficiency. A waste discharge device is located below the machine body and is used to recover and discharge waste chips and coolant generated during piston processing.

[0006] As a further technical solution, the body includes: The main cutter head is located on both sides of the machine body and is used to make pin holes for the piston. A sliding groove is formed inside the base, and a sliding shaft is slidably connected to the inner surface of the base; A mold base is slidably connected to the inner surface of a base, and the mold base is used to fix the bottom of the piston.

[0007] As a further technical solution, the body also includes: A threaded sleeve shaft is fixedly connected to the bottom of the mold base, and a screw is threadedly connected to the inner surface of the threaded sleeve shaft; A positioning frame is hinged to the front and rear sides of the top plate. The positioning frame is used to clamp and position the top of the piston. A spring is fixedly connected to the lower top surface of the positioning frame.

[0008] As a further technical solution, the base and the inner surface of the machine body are slidably connected, the slide groove and the front and rear sides of the mold base are fixedly connected, the inner side of the mold base is provided with a threaded groove, the screw is threadedly connected to the inner surface of the mold base, a torsion spring is provided at the hinge of the positioning frame and the top plate, the lower surface of the spring piece and the upper surface of the top plate are fixedly connected, and the screw is rotatably connected to the inner surfaces of both sides of the base.

[0009] As a further technical solution, the fast-selling device includes: A side frame is fixedly connected to both sides of the upper surface of the machine body, and a secondary cutter head is fixedly connected to the side of the side frame near the support plate; Trapezoidal locking block one, the trapezoidal locking block one being fixedly connected to the side of the support plate near the side frame; A latch is located on the top of the machine body and is used to lock the trapezoidal locking block one.

[0010] As a further technical solution, the fast-selling device also includes: Trapezoidal locking block two, the trapezoidal locking block two being fixedly connected to the side of the support plate near the side frame; A limiting seat is fixedly connected to the upper surface of the machine body, and a slide rod is slidably connected to the inner surface of the limiting seat; A limiting ring is fixedly connected to a circumferential surface of the slide rod; A coupling is fixedly connected to the lower surface of the base.

[0011] As a further technical solution, the main cutter head is fixedly connected to the side of the side frame near the support plate, the trapezoidal block one is slidably connected to the upper surface of the machine body and has a through hole on its inner side, the trapezoidal block two is slidably connected to the upper surface of the machine body and has a through hole on its inner side, the pin is slidably connected to the upper surface of the limiting seat, the slide rod one is fixedly connected to the end of the pin near the side frame, and a spring is provided between the limiting ring and the limiting seat.

[0012] As a further technical solution, the waste discharge device includes: A connecting plate is fixedly connected to the lower surface of the machine body. A receiving frame is fixedly connected to the bottom end of the connecting plate, and cover plates are hinged to the front and rear sides of the receiving frame. A pusher plate is slidably connected to the inner surface of the receiving frame, and the pusher plate is used to push the waste chips to the front and rear sides of the receiving frame.

[0013] As a further technical solution, the waste discharge device also includes: The protrusion is fixedly connected to both sides of the upper surface of the push plate, and the front and rear sides of the protrusion are fixedly connected to the slide rods. The end of the slide rods away from the protrusion is fixedly connected to the limit shaft. Support shafts are fixedly connected to both sides of the top of the receiving frame; The contact plate is fixedly connected to both sides of the inner surface of the receiving frame.

[0014] As a further technical solution, a spring is provided between the limiting shaft and the protrusion, the slide rod and the inner surface of the connecting shaft are slidably connected, the screw and the inner surface of the support shaft are rotatably connected, the protrusion and the lower surface of the base abut against each other, and the limiting shaft and the connecting shaft abut against each other on the side away from the protrusion.

[0015] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This automatic piston pin hole machining and positioning device features a top plate that moves down and presses down on the piston, thereby fixing the piston and improving the stability and quality of the pin hole. The mold base slides obliquely in the slide groove via a sliding shaft, thereby adjusting the support radius of the mold base and facilitating the positioning of pistons of different sizes, thus improving the applicability of the device. After the bottom end of the positioning frame contacts the piston, it rotates along the hinge point between itself and the top plate under the action of the reaction force, pulling the spring sheet to unfold. Furthermore, the positioning frame is tightly attached to the piston surface due to the elastic force of the spring sheet, further improving the stability and applicability of piston fixing.

[0016] 2. This automatic piston pin hole machining and positioning device uses a base and mold base to drive the piston to move between the main cutter head and the auxiliary cutter head, thus facilitating the machining of different types of pin holes without the need for frequent replacement of the main cutter head, improving the ease of operation of the device. The pin is inserted into the trapezoidal locking block one to position the base, thereby improving the accuracy and stability of the pin hole machining.

[0017] 3. In this automatic piston pin hole machining positioning device, the limiting ring is affected by the spring reset action and moves closer to the limiting seat. Through the slide rod one, the pin moves closer to the trapezoidal block one or trapezoidal block two and is inserted into the through hole, thereby locking the trapezoidal block one or trapezoidal block two. This makes the base and mold base more stable and more accurately aligned with the main cutter head or the auxiliary cutter head after they stop.

[0018] 4. In this automatic piston pin hole machining and positioning device, waste chips and coolant mix and fall downwards, where they are caught by the receiving frame, preventing waste from scattering around the device and polluting the working environment. The push plate slides back and forth in the receiving frame, pushing the waste to the front and back sides of the receiving frame. At this time, the cover plate can be opened to facilitate the discharge of waste, improving the convenience of the device. When the push plate resets, it is affected by the elasticity and the impact of the limit shaft, which generates vibration and shakes off the waste adhering to its surface, preventing the push plate from being blocked and improving the waste recycling and discharge effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the side bottom surface of the base of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a three-dimensional structural diagram of the front side of the top plate of the present invention; Figure 5 For the present invention Figure 4 A magnified structural diagram of B in the diagram; Figure 6 This is a three-dimensional structural diagram of the front side of the fast-selling device of the present invention; Figure 7 For the present invention Figure 6 A magnified structural diagram of C; Figure 8 This is a side perspective view of the waste discharge device of the present invention; Figure 9 For the present invention Figure 8 A magnified structural diagram of D in the diagram.

[0020] In the diagram: 1. Machine body; 2. Linear motor; 3. Base; 4. Support plate; 5. Through groove; 6. Hydraulic press; 7. Top plate; 8. Quick-release device; 9. Waste discharge device; 10. Main cutter head; 11. Slide groove; 12. Mold base; 13. Sliding shaft; 14. Threaded sleeve shaft; 15. Screw; 16. Positioning frame; 17. Spring; 81. Side frame; 82. Secondary cutter head; 83. Trapezoidal block one; 84. Pin; 85. Trapezoidal block two; 86. Limit seat; 87. Slide rod one; 88. Limit ring; 89. Connecting shaft; 91. Connecting plate; 92. Receiving frame; 93. Cover plate; 94. Push plate; 95. Protrusion; 96. Slide rod two; 97. Limit shaft; 98. Support shaft; 99. Contact plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-9One embodiment of the present invention is an automatic piston pin hole machining and positioning device, comprising a machine body 1, a linear motor 2 fixedly connected to the inner surface of the machine body 1, a base 3 fixedly connected to the moving end of the linear motor 2, a support plate 4 fixedly connected to the upper surface of the base 3, a through groove 5 formed on the inner side of the support plate 4, a hydraulic press 6 fixedly connected to the top end of the support plate 4, and a top plate 7 fixedly connected to the bottom end of the hydraulic press 6. The top plate 7 is used to quickly fix the piston. A quick-pin device 8 is disposed above the machine body 1. The quick-pin device 8 is used to avoid the need for frequent replacement of the cutting head when machining different types of pistons. The processing efficiency decreases. A waste discharge device 9 is located below the machine body 1. This device is used to recover and discharge waste chips and coolant generated during piston processing. The top plate 7 moves downwards and presses down on the piston, thus fixing it and improving the stability and quality of the pin holes. The mold base 12 slides obliquely within the slide groove 11 via the sliding shaft 13, thereby adjusting the support radius of the mold base 12. This facilitates positioning pistons of different sizes, improving the applicability of the device. The machine body 1 includes a main cutter head 10, which is located on both sides of the machine body 1. The main cutter head 10 is used for pin hole machining of the piston and slide groove machining. 11 is located inside the base 3. A sliding shaft 13 is slidably connected to the inner surface of the base 3. A mold base 12 is slidably connected to the inner surface of the base 3. The mold base 12 is used to fix the bottom of the piston. The machine body 1 also includes a threaded sleeve shaft 14, which is fixedly connected to the bottom of the mold base 12. A screw 15 is threadedly connected to the inner surface of the threaded sleeve shaft 14. A positioning frame 16 is hinged to the front and rear sides of the top plate 7. The positioning frame 16 is used to clamp and position the top of the piston. A spring piece 17 is fixedly connected to the lower surface of the top of the positioning frame 16. The base 3 and the inner surface of the machine body 1 are slidably connected. The sliding groove 11 and the mold base 12 are connected to the inner surface of the base 3. The front and rear sides of the base 12 are fixedly connected. A threaded groove is opened on the inner side of the mold base 12. The screw 15 is threadedly connected to the inner surface of the mold base 12. A torsion spring is provided at the hinge of the positioning frame 16 and the top plate 7. The lower surface of the spring piece 17 is fixedly connected to the upper surface of the top plate 7. The screw 15 is rotatably connected to the inner surfaces of both sides of the base 3. After the bottom end of the positioning frame 16 contacts the piston, it is rotated along the hinge of the top plate 7 under the action of the reaction force and pulls the spring piece 17 to unfold. The positioning frame 16 is tightly attached to the piston surface under the influence of the elastic force of the spring piece 17, which further improves the stability and applicability of the piston fixing.

[0023] Working principle: The piston is placed on the mold base 12. The linear motor 2 is started, which drives the base 3 to move. The base 3 drives the piston to move and align with the main cutter head 10. The main cutter head 10 is started and extends into the support plate 4 through the through groove 5 to make a pin hole in the piston. Before the pin hole, the hydraulic press 6 is started. The hydraulic press 6 drives the top plate 7 to move down and press the piston, thereby fixing the piston and improving the stability and quality of the pin hole. When it is necessary to make pin holes for pistons of different sizes, the screw 15 is rotated. The screw 15 rotates in the support shaft 98, thereby driving the thread. The sleeve shaft 14 and the mold base 12 move obliquely, and the mold base 12 slides obliquely in the slide groove 11 through the sliding shaft 13, thereby adjusting the support radius of the mold base 12, which facilitates the positioning of pistons of different sizes and improves the applicability of the device. When the top plate 7 moves downward, it drives the positioning frame 16 to move downward. When the bottom end of the positioning frame 16 contacts the piston, it rotates along the hinge point between it and the top plate 7 under the action of the reaction force and pulls the spring piece 17 to unfold. The positioning frame 16 is tightly attached to the piston surface under the influence of the elastic force of the spring piece 17, which further improves the stability and applicability of piston fixing.

[0024] Please see Figures 1-9Based on the above embodiments, in another embodiment of the present invention, the fast-selling device 8 includes a side frame 81, which is fixedly connected to both sides of the upper surface of the body 1. A secondary cutter head 82 is fixedly connected to the side of the side frame 81 near the support plate 4. A trapezoidal locking block 83 is fixedly connected to the side of the support plate 4 near the side frame 81. A pin 84 is disposed above the body 1 and is used to lock the trapezoidal locking block 83. The base 3 and the mold base 12 drive the piston to move between the main cutter head 10 and the secondary cutter head 82, thereby facilitating the making of different types of pin holes without the need for frequent replacement of the main cutter head 10, thus improving the ease of operation of the device. The pin 84 is inserted into the trapezoidal locking block 83 to position the base 3, thereby improving the accuracy and stability when making pin holes. The fast-selling device 8 also includes a trapezoidal locking block 85, which is fixedly connected to the side of the support plate 4 near the side frame 81. A limiting seat 86 is fixedly connected to the upper surface of the body 1. The inner surface of the limiting seat 86 A sliding rod 87 is slidably connected to the surface of the machine body 1. A limiting ring 88 is fixedly connected to the circumferential surface of the sliding rod 87. A connecting shaft 89 is fixedly connected to the lower surface of the base 3. The main cutter head 10 is fixedly connected to the side frame 81 near the support plate 4. A trapezoidal locking block 83 is slidably connected to the upper surface of the machine body 1, and has a through hole on its inner side. A trapezoidal locking block 85 is slidably connected to the upper surface of the machine body 1, and has a through hole on its inner side. A pin 84 is slidably connected to the upper surface of the limiting seat 86. The sliding rod 87 and the pin... One end of the 84 near the side frame 81 is fixedly connected. A spring is provided between the limiting ring 88 and the limiting seat 86. Under the influence of the spring's reset action, the limiting ring 88 moves closer to the limiting seat 86 and drives the pin 84 to approach the trapezoidal block 83 or the trapezoidal block 85 through the slide rod 87 and inserts it into the through hole, thereby locking the trapezoidal block 83 or the trapezoidal block 85. This makes the base 3 and the mold base 12 more stable and more accurately aligned with the main cutter head 10 or the auxiliary cutter head 82 after they stop.

[0025] Working principle: The main cutter head 10 and the auxiliary cutter head 82 are installed on the side frame 81. The linear motor 2 drives the piston to move between the main cutter head 10 and the auxiliary cutter head 82 through the base 3 and the mold base 12, thus facilitating the drilling of different types of pin holes without the need for frequent replacement of the main cutter head 10, improving the ease of operation of the device. When the piston is aligned with the main cutter head 10, the pin 84 is inserted into the trapezoidal locking block 1 83, thereby positioning the base 3 and improving the accuracy and stability of the pin hole drilling. When the base 3 is close to the main cutter head 10, it drives the trapezoidal locking block 1 83 to move closer to the pin 84. When the base 3 is close to the auxiliary cutter head 82, it drives the trapezoidal locking block 2 85 to move closer to the pin 84. When the inclined surfaces of the main cutter head 10 and the auxiliary cutter head 82 contact the pin 84, the pin 84... Guided by the inclined plane, the pin 84 slides on the limiting seat 86 and approaches the side frame 81. The pin 84 drives the slide rod 87 to slide within the limiting seat 86 and approach the side frame 81. The slide rod 87 then drives the limiting ring 88 away from the limiting seat 86. During this process, the limiting ring 88 pulls the spring to extend. When the through hole on the trapezoidal block 83 or trapezoidal block 85 is aligned with the pin 84, the limiting ring 88 is affected by the spring's reset action and moves towards the limiting seat 86. Through the slide rod 87, the pin 84 approaches the trapezoidal block 83 or trapezoidal block 85 and is inserted into the through hole, thereby locking the trapezoidal block 83 or trapezoidal block 85. This makes the base 3 and the mold base 12 more stable and more accurately aligned with the main cutter head 10 or the auxiliary cutter head 82 after they stop.

[0026] Please see Figures 1-9Based on the above embodiments, in another embodiment of the present invention, the waste discharge device 9 includes a connecting plate 91, which is fixedly connected to the lower surface of the machine body 1. A receiving frame 92 is fixedly connected to the bottom end of the connecting plate 91. Cover plates 93 are hinged to the front and rear sides of the receiving frame 92. A push plate 94 is slidably connected to the inner surface of the receiving frame 92. The push plate 94 is used to push the waste to the front and rear sides of the receiving frame 92. The waste and coolant mix and fall downwards and are caught by the receiving frame 92, preventing the waste from scattering and falling around the device and polluting the working environment. The push plate 94 slides back and forth in the receiving frame 92 and pushes the waste to the front and rear sides of the receiving frame 92. At this time, the cover plate 93 is opened to facilitate the discharge of the waste, improving the convenience of the device. The waste discharge device 9 also includes a protrusion 95, which is fixedly connected to the push plate 94. On both sides of the upper surface of plate 94, slide rods 96 are fixedly connected to the front and rear sides of protrusion 95. The end of slide rod 96 away from protrusion 95 is fixedly connected to a limiting shaft 97. Support shaft 98 is fixedly connected to the top two sides of receiving frame 92. Abutment plate 99 is fixedly connected to the inner surface of receiving frame 92. A spring is provided between limiting shaft 97 and protrusion 95. Slide rod 96 and connecting shaft 89 are slidably connected. Screw 15 and supporting shaft 98 are rotatably connected. Protrusion 95 abuts against the lower surface of base 3. Limit shaft 97 and connecting shaft 89 abut against the side away from protrusion 95. When push plate 94 is reset, it vibrates due to the elasticity and impact of limiting shaft 97, which shakes off the waste adhering to its surface, avoiding obstruction of push plate 94 and improving the waste recycling and discharge effect.

[0027] Working principle: Waste and coolant generated during pin drilling mix and fall downwards, where they are caught by the receiving frame 92, preventing waste from scattering and polluting the working environment. When the base 3 moves back and forth, it drives the connecting shaft 89 to move back and forth as well. The connecting shaft 89, through the slide rod 96 and the protrusion 95, drives the push plate 94 to slide back and forth within the receiving frame 92, pushing the waste to the front and rear sides of the receiving frame 92. At this time, the cover plate 93 is opened to facilitate waste discharge, improving the convenience of the device. When the push plate 94 slides back and forth within the receiving frame 92 and contacts the contact plate 99, the base 3 drives the connecting shaft 89 to continue... As the slide continues to move, the second slide rod 96 slides within the connecting shaft 89. At this time, the protrusion 95 is close to one side of the connecting shaft 89. When the base 3 moves the connecting shaft 89 away from the contact plate 99, the protrusion 95 is reset by the spring, which in turn drives the push plate 94 to reset. At the same time, the second slide rod 96 slides within the connecting shaft 89. The second slide rod 96 then drives the limiting shaft 97 to approach and impact the connecting shaft 89. When the push plate 94 resets, it vibrates due to the elasticity and the impact of the limiting shaft 97, which shakes off the waste adhering to its surface, preventing the push plate 94 from being blocked and improving the waste recycling and discharge effect.

[0028] This invention provides an automatic piston pin hole machining and positioning device. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. An automatic piston pin hole machining and positioning device, characterized in that, include: The machine body (1) has a linear motor (2) fixedly connected to its inner surface. The moving end of the linear motor (2) is fixedly connected to a base (3). The upper surface of the base (3) is fixedly connected to a support plate (4). A through groove (5) is opened on the inner side of the support plate (4). A hydraulic press (6) is fixedly connected to the top of the support plate (4). A top plate (7) is fixedly connected to the bottom of the hydraulic press (6). The top plate (7) is used to quickly fix the piston. Quick-release device (8), the quick-release device (8) is set above the machine body (1), the quick-release device (8) is used to avoid frequent replacement of the cutting head when processing different types of pistons, which would lead to a decrease in processing efficiency; Waste discharge device (9) is located below the machine body (1) and is used to recover waste chips and coolant generated during piston processing.

2. The automatic piston pin hole machining and positioning device according to claim 1, characterized in that: The body (1) includes: Main cutter head (10), the main cutter head (10) is disposed on both sides of the machine body (1), the main cutter head (10) is used to make pin holes for the piston; A sliding groove (11) is formed inside the base (3), and a sliding shaft (13) is slidably connected to the inner surface of the base (3). The mold base (12) is slidably connected to the inner surface of the base (3) and is used to fix the bottom of the piston.

3. The automatic piston pin hole machining and positioning device according to claim 2, characterized in that: The body (1) also includes: A threaded sleeve (14) is fixedly connected to the bottom of the mold base (12), and a screw (15) is threadedly connected to the inner surface of the threaded sleeve (14). Positioning frame (16) is hinged to the front and rear sides of the top plate (7). The positioning frame (16) is used to clamp and position the top of the piston. A spring piece (17) is fixedly connected to the lower top surface of the positioning frame (16).

4. The automatic piston pin hole machining and positioning device according to claim 3, characterized in that: The base (3) and the inner surface of the body (1) are slidably connected. The slide groove (11) and the mold base (12) are fixedly connected on the front and rear sides. The inner side of the mold base (12) is provided with a threaded groove. The screw (15) and the inner surface of the mold base (12) are threadedly connected. The positioning frame (16) and the top plate (7) are hinged with a torsion spring. The lower surface of the spring piece (17) and the upper surface of the top plate (7) are fixedly connected. The screw (15) and the inner surfaces of the two sides of the base (3) are rotatably connected.

5. The automatic piston pin hole machining and positioning device according to claim 4, characterized in that: The fast-moving consumer goods device (8) includes: Side frame (81), the side frame (81) is fixedly connected to both sides of the upper surface of the machine body (1), and the side frame (81) near the support plate (4) is fixedly connected to the auxiliary cutter head (82). Trapezoidal locking block one (83), said trapezoidal locking block one (83) is fixedly connected to the side of the support plate (4) near the side frame (81); A pin (84) is provided above the body (1) and is used to lock the trapezoidal card block (83).

6. The automatic piston pin hole machining and positioning device according to claim 5, characterized in that: The fast-moving consumer goods device (8) also includes: Trapezoidal locking block two (85), the trapezoidal locking block two (85) is fixedly connected to the side of the support plate (4) near the side frame (81); Limiting seat (86), the limiting seat (86) is fixedly connected to the upper surface of the body (1), and a sliding rod (87) is slidably connected to the inner surface of the limiting seat (86). A limiting ring (88) is fixedly connected to the circumferential surface of the slide rod (87); The connecting shaft (89) is fixedly connected to the lower surface of the base (3).

7. The automatic piston pin hole machining and positioning device according to claim 6, characterized in that: The main cutter head (10) is fixedly connected to the side of the side frame (81) near the support plate (4). The trapezoidal block one (83) is slidably connected to the upper surface of the machine body (1) and has a through hole on its inner side. The trapezoidal block two (85) is slidably connected to the upper surface of the machine body (1) and has a through hole on its inner side. The pin (84) is slidably connected to the upper surface of the limit seat (86). The slide rod one (87) is fixedly connected to the end of the pin (84) near the side frame (81). A spring is provided between the limit ring (88) and the limit seat (86).

8. The automatic piston pin hole machining and positioning device according to claim 7, characterized in that: The waste discharge device (9) includes: Connecting plate (91), the connecting plate (91) is fixedly connected to the lower surface of the machine body (1), the bottom end of the connecting plate (91) is fixedly connected to a receiving frame (92), and the front and rear sides of the receiving frame (92) are hinged with cover plates (93). Push plate (94) is slidably connected to the inner surface of receiving frame (92). Push plate (94) is used to push waste to the front and rear sides of receiving frame (92).

9. An automatic piston pin hole machining and positioning device according to claim 8, characterized in that: The waste discharge device (9) also includes: The protrusion (95) is fixedly connected to both sides of the upper surface of the push plate (94). The front and rear sides of the protrusion (95) are fixedly connected to the slide rod (96). The end of the slide rod (96) away from the protrusion (95) is fixedly connected to the limit shaft (97). Support shaft (98), which is fixedly connected to both sides of the top of the receiving frame (92); A contact plate (99) is fixedly connected to both sides of the inner surface of the receiving frame (92).

10. An automatic piston pin hole machining and positioning device according to claim 9, characterized in that: A spring is provided between the limiting shaft (97) and the protrusion (95). The inner surfaces of the slide rod (96) and the connecting shaft (89) are slidably connected. The inner surfaces of the screw (15) and the support shaft (98) are rotatably connected. The protrusion (95) abuts against the lower surface of the base (3). The side of the limiting shaft (97) and the connecting shaft (89) away from the protrusion (95) abuts against each other.

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