A bore processing apparatus for piston production

Abstract

This invention discloses a bore diameter processing device for piston production, comprising a support platform, a polishing chamber, a first arc block, a second arc block, a polishing assembly, a telescopic component, an elastic reset assembly, and a positioning pin. When the piston needs to be polished, the side wall of the piston is first fitted with the first arc block, then the piston is rotated and the positioning pin is inserted into the mounting hole. The telescopic component is then activated to clamp the piston with the second arc block, and the positioning pin is then pulled out of the mounting hole. Polishing of the mounting hole can then be performed. Therefore, this invention ensures that the axis of the polishing rod coincides with the axis of the mounting hole when the piston is clamped, thus preventing the situation where, due to lower precision, the polishing rod cannot be inserted into the mounting hole for polishing, as was previously possible with visual inspection.

Description

Technical Field

[0001] This utility model relates to the field of piston manufacturing and processing technology, specifically to a bore diameter processing device for piston manufacturing. Background Technology

[0002] The piston is the central part of the car engine and plays an extremely important role when the engine starts. The piston is used to withstand gas pressure and drives the crankshaft to rotate through the connecting rod via the piston pin. The top of the piston is also part of the combustion chamber. During the production of car pistons, the mounting holes on the surface of the car piston are usually polished using aperture processing equipment.

[0003] Existing hole-processing equipment for pistons typically uses a chuck assembly to clamp the piston, followed by a polishing rod rotating and inserting into the piston's mounting hole for polishing. For example, the patent document with authorization announcement number "CN222134572U" discloses a hole-processing equipment for automobile piston production. Although this technology can polish the piston's mounting hole, the piston clamping and installation process is simply a matter of clamping with two fixing pads. Then, the axis of the mounting hole is aligned with the axis of the polishing rod by adjusting the height of the polishing rod.

[0004] In actual operation, since the piston itself is cylindrical, the clamping process of the two fixing pads can only be achieved by visual inspection to ensure that the axis of the mounting hole is parallel to the axis of the polishing rod, thus ensuring that the axes can be coincident later. However, adjusting the axis of the mounting hole by visual inspection is too inaccurate and can easily lead to an angle between the axis of the mounting hole and the axis of the polishing rod. Even if the height of the mounting hole and the polishing rod are the same, the polishing rod may still be unable to be inserted into the mounting hole for polishing. Utility Model Content

[0005] The purpose of this invention is to provide a bore diameter processing device for piston production, thereby solving the problems raised in the background art. To achieve the above objective, this invention provides the following technical solution: It includes a polishing chamber mounted on a support platform, a first arc block and a second arc block disposed on the inner wall of the polishing chamber, a polishing assembly mounted on the support platform, and a telescopic component for driving the second arc block to move. A positioning post is connected to the side wall of the polishing chamber via an elastic reset assembly. Under the action of the elastic reset assembly, the positioning post moves along its axial direction. The axis of the positioning post coincides with the axis of the polishing rod in the polishing assembly, and the diameter of the positioning post is the same as the diameter of the piston mounting hole. The polishing rod is located inside the polishing chamber.

[0006] Furthermore, the first arc block and the second arc block are provided with bosses, which cooperate with the annular groove of the piston, and after the annular groove cooperates with the boss, the axis of the mounting hole is coplanar with the axis of the positioning post.

[0007] Furthermore, both the first arc block and the second arc block are semi-circular arc plates, and the semi-circular arc plates are provided with semi-circular through holes for the positioning post to move.

[0008] Furthermore, the elastic reset assembly includes a sleeve fixed to the polishing chamber and a push rod slidably connected to the sleeve. A positioning post is fixed to the end of the push rod, a baffle is fixed to the end of the sleeve, and a first spring is sleeved on the outer edge of the push rod. One end of the first spring is fixed to the baffle, and the other end is fixed to the positioning post.

[0009] Furthermore, the polishing rod has a V-shaped hole at its end, and the positioning post and the push rod have a flow channel connected to the air source inside, with the air outlet of the flow channel pointing towards the center of the V-shaped hole.

[0010] Furthermore, two L-shaped baffles are fixed to the sidewalls of the first arc block and the second arc block, respectively. When the first arc block and the second arc block are engaged, the two adjacent L-shaped baffles form an inverted U-shaped plate, and the V-shaped hole is located inside the inverted U-shaped plate.

[0011] Furthermore, the polishing assembly includes a lead screw and nut mechanism mounted on the support platform, a moving block fixed to the moving end of the lead screw and nut mechanism, and a motor fixed to the moving block, with the polishing rod fixed to the output rod of the motor.

[0012] Furthermore, the polishing rod is provided with a quick-release rod that penetrates the polishing chamber, and the end of the output rod is provided with a mounting block that is detachably connected to the quick-release rod.

[0013] Furthermore, the output rod is provided with a square hole, and a rotating shaft is fixedly connected to the end of the mounting block. The rotating shaft is provided with a square shaft that mates with the square hole. The square shaft passes through the square hole, and a positioning pin is fixedly connected to the square shaft at both ends of the square hole. A second spring is sleeved on the rotating shaft. One end of the second spring is connected to the end face of the output rod, and the other end is connected to the mounting block. The positioning pin away from the mounting block abuts against the end face of the square hole under the action of the second spring.

[0014] Furthermore, the mounting block is equipped with a pressure sensor for detecting the pressure of the second spring, and the pressure sensor is connected to the controller of the motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When the piston needs to be polished, first, the side wall of the piston is fitted with the first arc block, then the piston is rotated and the positioning pin is inserted into the mounting hole. Then, the telescopic component is activated to clamp the piston with the second arc block, and then the positioning pin is pulled out from the mounting hole. The mounting hole can then be polished. Therefore, this utility model ensures that when the piston is clamped, the axis of the polishing rod is still aligned with the axis of the mounting hole, thereby preventing the situation where, due to the low precision of visual inspection, the polishing rod cannot be inserted into the mounting hole for polishing as in the past. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the present invention.

[0019] The components include: 1. Support platform; 2. Quick-release rod; 3. Lead screw and nut mechanism; 4. Mounting block; 5. Moving block; 6. Rotating shaft; 7. Motor; 8. Output rod; 9. Polishing rod; 10. Telescopic component; 11. Second arc block; 12. L-shaped baffle plate; 13. Push rod; 14. Elastic reset assembly; 15. Polishing chamber; 16. First arc block; 17. Second spring; 18. Positioning pin; 19. Square shaft; 20. V-shaped hole; 21. Sleeve; 22. Flow channel; 23. First spring; 24. Piston; 25. Positioning pin; 26. Mounting hole. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0021] Example: Please refer to Figure 1-2A piston manufacturing aperture processing device includes a polishing chamber 15 mounted on a support platform 1, a first arc block 16 and a second arc block 11 disposed on the inner wall of the polishing chamber 15, a polishing assembly mounted on the support platform 1, and a telescopic member 10 for driving the second arc block 11 to move. The first arc block 16 is fixed to the inner wall of the polishing chamber 15 by a connecting block, the telescopic member 10 is fixed to the polishing chamber 15, and a positioning post 25 is connected to the side wall of the polishing chamber 15 by an elastic reset assembly 14. The positioning post 25 is elastically reset... Under the action of the positioning component 14, it moves along the axis of the positioning post 25. The axis of the positioning post 25 coincides with the axis of the polishing rod 9 in the polishing component, and the diameter of the positioning post 25 is the same as the diameter of the mounting hole 26 of the piston 24. The polishing rod 9 is located inside the polishing chamber 15. The telescopic component 10 can be in the form of a cylinder, and the polishing rod 9 can be a common polishing rod, such as the polishing rod 9 in the patent document with the authorization announcement number "CN222134572U". It will not be described in detail here.

[0022] In this embodiment, after the sidewall of the piston 24 is in contact with the first arc block 16 and the positioning pin 25 is inserted into the mounting hole 26, the second arc block 11 clamps the piston 24 under the action of the telescopic member 10. This ensures that the axis of the positioning pin 25 coincides with the mounting hole 26 when the piston 24 is clamped, thereby aligning the axis of the mounting hole 26 with the axis of the polishing rod 9. This prevents the situation where, due to low precision, the polishing rod 9 cannot be inserted into the mounting hole 26 for polishing, which was previously possible with visual inspection. Furthermore, after the first arc block 16 and the second arc block 11 clamp the piston 24, the positioning pin 25 can be pulled out of the mounting hole 26 to prevent any impact on the polishing process.

[0023] In this embodiment, the first arc block 16 and the second arc block 11 are both semi-circular arc plates. The semi-circular arc plates are provided with semi-circular through holes for the positioning post 25 to move. The first arc block 16 and the second arc block 11 are provided with bosses. The bosses cooperate with the annular groove of the piston 24. After the annular groove cooperates with the boss, the axis of the mounting hole 26 is coplanar with the axis of the positioning post 25, thereby realizing the initial installation and positioning of the piston 24 and facilitating the adjustment of the position of the mounting hole 26 of the piston 24. By using the annular groove to limit the piston 24, the piston 24 can be clamped while ensuring the clamping quality. This also eliminates the problem that when a support plate is used in the past, polished metal debris would easily accumulate on the support plate, requiring timely cleaning, otherwise it would affect the placement of the next piston 24.

[0024] In this embodiment, the elastic reset assembly 14 includes a sleeve 21 fixed to the polishing chamber 15 and a push rod 13 slidably connected to the sleeve 21. A positioning post 25 is fixed to the end of the push rod 13, and a baffle is fixed to the end of the sleeve 21. A first spring 23 is sleeved on the outer edge of the push rod 13. One end of the first spring 23 is fixed to the baffle, and the other end is fixed to the positioning post 25. The first spring 23 is a tension spring. In the initial state, the positioning post 25 is located outside the first arc block 16 under the action of the tension spring. When the piston 24 is installed, the annular groove of the piston 24 is first engaged with the boss of the first arc block 16. Then, the piston 24 is rotated to align the mounting hole 26 with the positioning post 25. Then, the push rod 13 is pushed to insert the positioning post 25 into the mounting hole 26. Then, the telescopic member 10 is activated to clamp the piston 24 with the second arc block 11. Then, the push rod 13 can be released, and the positioning post 25 slides out of the mounting hole 26 under the action of the tension spring.

[0025] In addition, the polishing rod 9 has a V-shaped hole 20 at its end, and the positioning post 25 and the push rod 13 have a flow channel 22 connected to the air source. The air outlet of the flow channel 22 points to the center of the V-shaped hole 20, so that the polishing rod 9 forms a conical air layer during movement, thereby polishing the mounting hole 26 while blowing it, preventing debris from remaining on the mounting hole 26. Two L-shaped baffle plates 12 are fixed to the side walls of the first arc block 16 and the second arc block 11, respectively. When the first arc block 16 and the second arc block 11 are engaged, the two adjacent L-shaped baffle plates 12 form an inverted U-shaped plate. The V-shaped hole 20 is located inside the inverted U-shaped plate to prevent gas from being blown to the external operators.

[0026] The polishing assembly includes a lead screw and nut mechanism 3 mounted on the support platform 1, a moving block 5 fixed to the moving end of the lead screw and nut mechanism 3, and a motor 7 fixed to the moving block 5. A polishing rod 9 is fixed to the output rod 8 of the motor 7, thereby realizing the polishing operation of the polishing rod 9. The polishing rod 9 is provided with a quick-release rod 2, which passes through the polishing chamber 15. The end of the output rod 8 is provided with a mounting block 4 that is detachably connected to the quick-release rod 2. The detachable method can be in the form of bolt connection, so that polishing rods 9 of different sizes can be replaced, thereby polishing mounting holes 26 of different sizes.

[0027] In this embodiment, the output rod 8 has a square hole, and the end of the mounting block 4 is fixedly connected to a rotating shaft 6. The rotating shaft 6 has a square shaft 19 that mates with the square hole. The square shaft 19 passes through the square hole, and positioning pins 18 are fixedly connected to the square shaft 19 at both ends of the square hole. A second spring 17 is sleeved on the rotating shaft 6. One end of the second spring 17 is connected to the end face of the output rod 8, and the other end is connected to the mounting block 4. The positioning pins 18 away from the mounting block 4 abut against the end face of the square hole under the action of the second spring 17. The mounting block 4 is provided with a pressure sensor for detecting the pressure of the second spring 17. The pressure sensor is connected to the controller of the motor 7. The second spring 17 is a compression spring. When the pressure sensor detects that the pressure generated by the second spring 17 exceeds the threshold, the pressure sensor will send a signal to the controller, and the controller will control the motor 7 to stop. This avoids the problem that the polishing rod 9 collides with the piston 24 and causes damage to the motor 7 when the axis of the polishing rod 9 does not coincide with the mounting hole 26.

[0028] Working principle: When the piston 24 needs to be polished, first, the side wall of the piston 24 is fitted with the first arc block 16, and the annular groove of the piston 24 is engaged with the boss of the first arc block 16. Then, the piston 24 is rotated to align the mounting hole 26 with the positioning pin 25. Then, the push rod 13 is pushed to insert the positioning pin 25 into the mounting hole 26. Then, the telescopic component 10 is activated to clamp the piston 24 with the second arc block 11. Then, the push rod 13 is released, and the positioning pin 25 slides out of the mounting hole 26 under the action of the tension spring. Then, the mounting hole 26 can be polished. Therefore, this utility model ensures that when the piston 24 is clamped, the axis of the polishing rod 9 is still coincident with the axis of the mounting hole 26, thereby preventing the situation in the past where the polishing rod 9 could not be inserted into the mounting hole 26 for polishing due to the low precision of visual inspection.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A bore diameter processing device for piston production, characterized in that: The assembly includes a polishing chamber (15) mounted on a support platform (1), a first arc block (16) and a second arc block (11) mounted on the inner wall of the polishing chamber (15), a polishing assembly mounted on the support platform (1), and a telescopic member (10) for driving the second arc block (11) to move. A positioning post (25) is connected to the side wall of the polishing chamber (15) via an elastic reset assembly (14). The positioning post (25) moves along the axial direction of the positioning post (25) under the action of the elastic reset assembly (14). The axis of the positioning post (25) coincides with the axis of the polishing rod (9) in the polishing assembly, and the diameter of the positioning post (25) is the same as the diameter of the mounting hole (26) of the piston (24). The polishing rod (9) is located inside the polishing chamber (15).

2. The aperture treatment equipment for piston production according to claim 1, characterized in that: The first arc block (16) and the second arc block (11) are provided with bosses. The bosses are engaged with the annular groove of the piston (24). After the annular groove is engaged with the boss, the axis of the mounting hole (26) is coplanar with the axis of the positioning post (25).

3. The aperture treatment equipment for piston production according to claim 1, characterized in that: Both the first arc block (16) and the second arc block (11) are semi-circular arc plates, and the semi-circular arc plates are provided with semi-circular through holes for the positioning post (25) to move.

4. The aperture treatment equipment for piston production according to claim 2, characterized in that: The elastic reset assembly (14) includes a sleeve (21) fixed to the polishing chamber (15) and a push rod (13) slidably connected to the sleeve (21). A positioning post (25) is fixed to the end of the push rod (13), and a baffle is fixed to the end of the sleeve (21). A first spring (23) is sleeved on the outer edge of the push rod (13). One end of the first spring (23) is fixed to the baffle, and the other end is fixed to the positioning post (25).

5. The aperture treatment equipment for piston production according to claim 4, characterized in that: The polishing rod (9) has a V-shaped hole (20) at its end. The positioning post (25) and the push rod (13) have a flow channel (22) connected to the air source inside. The air outlet of the flow channel (22) points to the center of the V-shaped hole (20).

6. The aperture treatment equipment for piston production according to claim 5, characterized in that: Two L-shaped baffles (12) are fixed to the side wall of the first arc block (16) and the side wall of the second arc block (11), respectively. When the first arc block (16) and the second arc block (11) are engaged, the two adjacent L-shaped baffles (12) form an inverted U-shaped plate, and the V-shaped hole (20) is located inside the inverted U-shaped plate.

7. The aperture treatment equipment for piston production according to claim 1, characterized in that: The polishing assembly includes a lead screw and nut mechanism (3) mounted on the support platform (1), a moving block (5) fixed to the moving end of the lead screw and nut mechanism (3), and a motor (7) fixed to the moving block (5). The polishing rod (9) is fixed to the output rod (8) of the motor (7).

8. The aperture treatment equipment for piston production according to claim 7, characterized in that: The polishing rod (9) is provided with a quick-release rod (2), which passes through the polishing chamber (15). The end of the output rod (8) is provided with a mounting block (4) that is detachably connected to the quick-release rod (2).

9. The aperture treatment equipment for piston production according to claim 8, characterized in that: The output rod (8) is provided with a square hole. The end of the mounting block (4) is fixedly connected to a rotating shaft (6). The rotating shaft (6) is provided with a square shaft (19) that mates with the square hole. The square shaft (19) passes through the square hole. Positioning pins (18) are fixedly connected to the square shafts (19) at both ends of the square hole. A second spring (17) is sleeved on the rotating shaft (6). One end of the second spring (17) is connected to the end face of the output rod (8), and the other end is connected to the mounting block (4). The positioning pins (18) away from the mounting block (4) abut against the end face of the square hole under the action of the second spring (17).

10. The aperture treatment equipment for piston production according to claim 9, characterized in that: The mounting block (4) is provided with a pressure sensor for detecting the pressure of the second spring (17), and the pressure sensor is connected to the controller of the motor (7).

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