Tooling for machining a metal piston rod

By designing a tooling system with an annular nozzle and a motor-driven moving device, the problem of unevenness in traditional sandblasting was solved, enabling efficient and precise machining of the piston rod surface and improving product quality and stability.

CN224544275UActive Publication Date: 2026-07-24JIANGYIN PUFIKE HYDRAULIC EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGYIN PUFIKE HYDRAULIC EQUIPMENT CO LTD
Filing Date
2025-08-29
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional metal piston rod sandblasting fixtures are difficult to guarantee the uniformity of sandblasting, which affects product quality.

Method used

A tooling system comprising a base plate, a sandblasting device, and a clamping device was designed. The sandblasting device ensures uniform sandblasting by precisely controlling the evenly spaced nozzles on the annular tube and the moving device, combined with the rotation of the lead screw driven by a motor. The clamping device uses a cylinder to push the top plate to clamp the piston rod, and uses an L-shaped guide groove for stable clamping.

Benefits of technology

This process achieves uniform sandblasting on the piston rod surface, improving machining accuracy and product quality, and ensuring the stability and accuracy of the machining process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to piston rod processing technical field provides a frock for metal piston rod processing, including bottom plate, sand blasting device and clamping device, sand blasting device sets up on bottom plate, mobile device sets up on bottom plate, sand blasting device with mobile device connects, clamping device sets up on bottom plate, the nozzle that sand blasting device's annular pipe evenly interval sets up, cooperation mobile device accurate movement control, can guarantee the uniformity of sand blasting to piston rod surface, cooperation motor drive screw rod rotation, drive connecting rod along slide rail steady movement, ensure that sand blasting device can carry out sand blasting to piston rod according to predetermined trajectory, avoid the surface quality defect that leads to because sand blasting is not uniform, effectively promoted the surface treatment effect and product performance of metal piston rod.
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Description

Technical Field

[0001] This utility model relates to the field of piston rod processing technology, specifically to a tooling for processing metal piston rods. Background Technology

[0002] In the field of mechanical manufacturing, metal piston rods are widely used in hydraulic and pneumatic systems, and their surface quality and machining accuracy have a crucial impact on the overall performance and service life of the equipment. Sandblasting, as a key process in the surface treatment of metal piston rods, can effectively remove impurities such as oxide scale and oil stains from the piston rod surface, improving surface roughness and enhancing surface hardness and wear resistance. However, traditional metal piston rod sandblasting fixtures typically use a handheld spray gun to process the surface of the metal piston rod, which makes it difficult to ensure the uniformity of sandblasting and affects product quality.

[0003] Therefore, this application is hereby submitted. Utility Model Content

[0004] This application proposes a tooling for machining metal piston rods to solve the technical problem in the prior art where the surface of a metal piston rod is machined using a handheld spray gun, making it difficult to ensure the uniformity of sandblasting. The above-mentioned technical objective of this utility model is achieved through the following technical solution: A tooling for machining a metal piston rod includes a base plate, a sandblasting device, and a clamping device. The sandblasting device is disposed on the base plate, the moving device is disposed on the base plate, the sandblasting device is connected to the moving device, and the clamping device is disposed on the base plate. The sandblasting device includes a first support frame, a water tank, an annular pipe, nozzles, a water pipe, and a moving device. The first support frame is mounted on the base plate, the water tank is mounted on the first support frame, the moving device is mounted on the base plate, the annular pipe is mounted on the moving device, the nozzles are evenly spaced on the inner ring of the annular pipe, and the water pipe is positioned between the annular pipe and the water tank.

[0005] Furthermore, the moving device includes a motor, a second support frame, a lead screw, a connecting rod, and a guide device. The motor is mounted on the base plate, the second support frames are symmetrically arranged on both sides of the base plate, the lead screw is rotatably disposed between the second support frames on both sides, the lead screw is connected to the output end of the motor, the connecting rod is mounted on the lead screw, the guide device is mounted on the base plate, and the connecting rod is connected to the guide device.

[0006] Furthermore, the clamping device includes a fixed support rod, a guide groove, a movable support rod, a support plate, clamping elements, a cylinder, and a top plate. The fixed support rod is disposed on the base plate near the motor. The guide groove is disposed on the base plate. The movable support rod is slidably disposed in the guide groove. The support plate is rotatably disposed on the fixed support rod and the movable support rod, respectively. The clamping elements are all disposed on the support plate. The cylinder is disposed on the base plate near the guide groove. The top plate is disposed on the output end of the cylinder. The top plate is in contact with the movable support rod.

[0007] Furthermore, the guide groove is L-shaped.

[0008] Furthermore, a transmission belt is provided between the lead screw and the support plate near the fixed support rod.

[0009] Furthermore, the guiding device includes a slide rail, which is symmetrically arranged on the base plate, and the connecting rod is connected to the slide rail sliding rod.

[0010] Compared with the prior art, the beneficial effects of this utility model include: The uniformly spaced nozzles on the annular tube of the sandblasting device, combined with the precise movement control of the moving device, ensure the uniformity of sandblasting on the piston rod surface. In conjunction with the motor-driven lead screw rotation, the connecting rod moves stably along the slide rail, ensuring that the sandblasting device can sandblast the piston rod according to the predetermined trajectory. This avoids surface quality defects caused by uneven sandblasting and effectively improves the surface treatment effect and product performance of the metal piston rod. This application uses a cylinder to push the top plate, causing the movable support rod to slide within an L-shaped guide groove. This allows for the rapid and stable clamping of metal piston rods of different sizes. The L-shaped guide groove limits the movable support rod from two directions, ensuring the stability and accuracy of the clamping process. This ensures the piston rod is firmly clamped, effectively preventing displacement during processing and providing a reliable foundation for sandblasting, thereby significantly improving processing accuracy and product quality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the sandblasting device of this utility model; Figure 4 This is a schematic diagram of the structure of the mobile device of this utility model.

[0012] In the diagram: 1. Base plate; 2. First support frame; 3. Water tank; 4. Annular pipe; 5. Nozzle; 6. Water pipe; 7. Motor; 8. Second support frame; 9. Lead screw; 10. Connecting rod; 11. Guide device; 12. Fixed support rod; 13. Guide groove; 14. Moving support rod; 15. Support plate; 16. Clamping device; 17. Cylinder; 18. Top plate. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0016] Please see the appendix Figure 1-4 A tooling for processing metal piston rods includes a base plate 1, a sandblasting device and a clamping device. The sandblasting device is mounted on the base plate 1, and a moving device is mounted on the base plate 1. The sandblasting device is connected to the moving device, and the clamping device is mounted on the base plate 1. The sandblasting device includes a first support frame 2, a water tank 3, an annular pipe 4, nozzles 5, water pipes 6, and a moving device. The first support frame 2 is mounted on a base plate 1, the water tank 3 is mounted on the first support frame 2, the moving device is mounted on the base plate 1, the annular pipe 4 is mounted on the moving device, the nozzles 5 are evenly spaced on the inner ring of the annular pipe 4, and the water pipe 6 is located between the annular pipe 4 and the water tank 3.

[0017] The metal piston rod is placed on a clamping device and fixed in place to prevent displacement during processing. The moving device drives the sandblasting device to move, and the sandblasting device performs sandblasting on the fixed piston rod. Through the cooperation of various devices, efficient and precise processing of the metal piston rod is achieved. A water tank 3 is placed on the first support frame 2. The water tank 3 stores a medium for sandblasting, such as a mixture of water and abrasive. A motor 7 drives an annular tube 4 to move via a moving device. During the movement of the annular tube 4, the medium in the water tank 3 is transported to the annular tube 4 through a water pipe 6, and then sprayed out from nozzles 5 evenly spaced on the inner ring of the annular tube 4 to sandblast the metal piston rod inside the annular tube 4. The even distribution of nozzles 5 ensures the uniformity of sandblasting on the piston rod surface and improves the processing quality. The moving device includes a motor 7, a second support frame 8, a lead screw 9, a connecting rod 10, and a guide device 11. The motor 7 is mounted on the base plate 1, the second support frames 8 are symmetrically arranged on both sides of the base plate 1, the lead screw 9 is rotatably mounted between the second support frames 8 on both sides, the lead screw 9 is connected to the output end of the motor 7, the connecting rod 10 is mounted on the lead screw 9, and the guide device 11 is mounted on the base plate 1 and connected to the guide device 11.

[0018] After the motor 7 starts, the output end of the motor 7 drives the lead screw 9 to rotate. When the lead screw 9 rotates, the connecting rod 10 set on the lead screw 9 moves along the axial direction of the lead screw 9 under the action of the thread transmission of the lead screw 9. At the same time, the connecting rod 10 is slidably connected to the guide device 11, which plays a guiding role and restricts the connecting rod 10 to move only in the axial direction of the lead screw 9, preventing the connecting rod 10 from deviating or shaking during the movement, thereby ensuring that the sandblasting device can move stably and accurately to the required position to perform sandblasting processing on the piston rod. The clamping device includes a fixed support rod 12, a guide groove 13, a movable support rod 14, a support plate 15, a clamping element 16, a cylinder 17, and a top plate 18. The fixed support rod 12 is mounted on the base plate 1 near the motor 7. The guide groove 13 is mounted on the base plate 1. The movable support rod 14 is slidably mounted in the guide groove 13. The support plate 15 is rotatably mounted on both the fixed support rod 12 and the movable support rod 14. The clamping element 16 is mounted on the support plate 15. The cylinder 17 is mounted on the base plate 1 near the guide groove 13. The top plate 18 is mounted on the output end of the cylinder 17 and is in contact with the movable support rod 14.

[0019] When the piston rod to be processed needs to be placed, the movable support rod 14 is moved to the end position of the guide groove 13 laterally. Then, one end of the piston rod is fixed to the clamping member 16 on the fixed support rod 12. The clamping member 16 is existing technology and will not be described in detail here. Then, the movable support rod 14 is reset and the clamping member 16 on the movable support rod 14 is fixed to the other end of the piston rod. In this way, piston rods of different diameters can be processed. Then, the control cylinder 17 drives the top plate 18 to extend and abut against the movable support rod 14 to prevent the movable support rod 14 from shifting. After the piston rod is processed, the control cylinder 17 drives the top plate 18 to retract and then the piston rod can be taken out.

[0020] The guide groove 13 is L-shaped. The L-shaped guide groove 13 can provide a more stable movement trajectory for the movable support rod 14. Compared with the straight guide groove 13, the L-shape can move the movable support rod 14 in two directions, which makes it easier to clamp piston rods of different sizes.

[0021] A transmission belt 19 is provided between the lead screw 9 and the support plate 15 near the fixed support rod 12. When the motor 7 drives the lead screw 9 to rotate, the rotation of the lead screw 9 can be transmitted to the support plate 15 through the transmission belt 19, so that the support plate 15 rotates synchronously. The rotation of the support plate 15 can drive the clamping member 16 and the piston rod to rotate synchronously, thus making the sandblasting more uniform.

[0022] The guide device 11 includes a slide rail, which is symmetrically arranged on the base plate 1, and the connecting rod 10 is connected to the slide rail sliding rod.

[0023] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A tooling for machining a metal piston rod, characterized in that, It includes a base plate (1), a sandblasting device and a clamping device. The sandblasting device is disposed on the base plate (1), the moving device is disposed on the base plate (1), the sandblasting device is connected to the moving device, and the clamping device is disposed on the base plate (1). The sandblasting device includes a first support frame (2), a water tank (3), an annular pipe (4), nozzles (5), a water pipe (6), and a moving device. The first support frame (2) is mounted on the base plate (1), the water tank (3) is mounted on the first support frame (2), the moving device is mounted on the base plate (1), the annular pipe (4) is mounted on the moving device, the nozzles (5) are evenly spaced on the inner ring of the annular pipe (4), and the water pipe (6) is located between the annular pipe (4) and the water tank (3).

2. The tooling for machining a metal piston rod according to claim 1, characterized in that, The moving device includes a motor (7), a second support frame (8), a lead screw (9), a connecting rod (10), and a guide device (11). The motor (7) is mounted on the base plate (1). The second support frame (8) is symmetrically mounted on both sides of the base plate (1). The lead screw (9) is rotatably mounted between the second support frames (8) on both sides. The lead screw (9) is connected to the output end of the motor (7). The connecting rod (10) is mounted on the lead screw (9). The guide device (11) is mounted on the base plate (1). The connecting rod (10) is connected to the guide device (11).

3. The tooling for machining a metal piston rod according to claim 1, characterized in that, The clamping device includes a fixed support rod (12), a guide groove (13), a movable support rod (14), a support plate (15), a clamping element (16), a cylinder (17), and a top plate (18). The fixed support rod (12) is located on the base plate (1) near the motor (7). The guide groove (13) is located on the base plate (1). The movable support rod (14) is slidably located in the guide groove (13). The support plate (15) is rotatably located on the fixed support rod (12) and the movable support rod (14), respectively. The clamping element (16) is located on the support plate (15). The cylinder (17) is located on the base plate (1) near the guide groove (13). The top plate (18) is located on the output end of the cylinder (17). The top plate (18) is in contact with the movable support rod (14).

4. The tooling for machining a metal piston rod according to claim 1, characterized in that, The guide groove (13) is L-shaped.

5. The tooling for machining a metal piston rod according to claim 1, characterized in that, A transmission belt (19) is provided between the lead screw (9) and the support plate (15) on the side near the fixed support rod (12).

6. The tooling for machining a metal piston rod according to claim 2, characterized in that, The guide device (11) includes a slide rail, which is symmetrically arranged on the base plate (1), and the connecting rod (10) is connected to the slide rail sliding rod.