Valve body side machining fixture

Abstract

The utility model discloses a valve body side surface processing clamp, including clamping station, lever cylinder, compression assembly and positioning assembly. The top of clamping station is provided with first boss and second boss, and first boss and second boss are arranged along the length direction interval of clamping station, and the height of first boss is greater than the height of second boss. Further, a plurality of placing blocks are respectively arranged on first boss and second boss, and the top of placing block is fixedly connected to the top of clamping station through bolt. Wherein, the top of placing block is provided with arc groove, and is used for adapting the external contour shape of the valve body to be processed. Further improve the clamping stability of valve body, avoid the position deviation caused by vibration in the processing.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a fixture for machining the side of a valve body. Background Technology

[0002] In the field of machining, valve bodies are crucial industrial components, and their machining accuracy and efficiency directly impact the performance and quality of the final product. Traditional valve body side machining typically relies on general-purpose fixtures or simple fixing devices for positioning and clamping. However, existing fixture designs have numerous shortcomings, making it difficult to meet the demands of high-precision and high-efficiency machining. For example, during valve body positioning, traditional fixtures often lack precise alignment structures, leading to easy displacement of the valve body during placement, thus affecting machining accuracy. Furthermore, due to the complex shape of the valve body, with some areas featuring outward-extending protrusions or special structures, traditional fixtures may not be able to effectively restrict its axial rotation during clamping, further increasing machining difficulty and error risks.

[0003] On the other hand, existing fixture designs also have significant shortcomings in terms of space utilization and ease of operation. For example, the structural layout on both sides of the fixture may cause the equipment to collide with other parts of the automated production line, thus affecting the stability and safety of processing. Furthermore, traditional fixtures often use a single-point clamping method, which cannot efficiently clamp multiple valve bodies simultaneously, reducing production efficiency. In applications where space saving is crucial, traditional fixture designs are often bulky and inflexible, failing to meet the demands of modern manufacturing for compact equipment.

[0004] In summary, existing valve body side machining fixtures have shortcomings in terms of positioning accuracy, clamping stability, space utilization, and ease of operation. There is an urgent need for a new fixture design to solve these problems, improve machining accuracy and efficiency, and meet the needs of modern production environments. Utility Model Content

[0005] The purpose of this invention is to provide a valve body side machining fixture to overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A valve body side machining fixture includes a clamping platform, a lever cylinder, a clamping assembly, and a positioning assembly. The top surface of the clamping platform has a first boss and a second boss, which are spaced apart along the length of the clamping platform, with the height of the first boss being greater than the height of the second boss. Further, multiple placement blocks are provided on the first and second bosses, and adjacent placement blocks are fixedly connected to the top surface of the clamping platform by bolts. The top surface of each placement block has an arc-shaped groove to adapt to the outer contour shape of the valve body to be machined.

[0007] Specifically, the clamping assembly includes multiple clamping cylinders and clamping blocks. The clamping cylinders are fixedly mounted on the top surface of the clamping platform and located between adjacent placement blocks. The top end of the piston rod of the clamping cylinder is fixedly connected to the clamping block, which has a T-shaped structure with both ends extending above the adjacent placement blocks. When the clamping cylinder drives the piston rod to move upward, the two ends of the clamping block press downward against the valve body on the adjacent placement block, thereby achieving fixed clamping of the valve body.

[0008] Furthermore, the positioning assembly includes a positioning plate and a positioning top block. The positioning plate is fixedly installed on the rear side of the clamping platform and located on top of the shim block. An opening is formed in the center of the positioning plate, the shape of which matches a protrusion on one side of the valve body. When the valve body is placed on the placement block, the protrusion of the valve body is embedded in the opening, thereby restricting the valve body's rotational freedom in the horizontal direction. The positioning top block is fixedly installed on the front side of the placement block, its top surface contacting the front end of the valve body to define the front-rear position of the valve body.

[0009] Furthermore, the lever cylinder includes a cylinder body, a piston rod, a connecting plate, a clamping block, and a positioning seat. The cylinder body is fixedly installed on the left and right sides of the clamping platform. The end of the piston rod is threadedly connected to a hinge block. One end of the hinge block is hinged to the middle of the clamping block, and the other end is hinged to the top end of the connecting plate. The bottom end of the connecting plate is hinged to the positioning seat via a pin, and the positioning seat is fixedly installed on the outer wall of the cylinder body. In particular, the end of the clamping block is integrally formed with a contact, and the surface of the contact is hardened to improve wear resistance. When the piston rod extends outward, the hinge block drives the clamping block to rotate around the pin, causing the contact to move towards the center of the clamping platform, thereby achieving auxiliary clamping of the valve body.

[0010] Furthermore, the top sidewall of the hinge block has a pair of parallel mating sidewalls, the distance between which is the same as the width of the connecting piece. The top end of the connecting piece is hinged to the middle of the clamping block by a pin, and the middle of the clamping block has an abutment groove for accommodating the top end of the connecting piece. Through the above structural design, the clamping block can achieve stable rotational movement under the combined action of the hinge block and the connecting piece.

[0011] Specifically, the top of the positioning seat extends upward to form a pair of hinged clamping plates, with a through hole between the clamping plates for inserting a pin. The bottom end of the connecting piece is hinged to the hinged clamping plates via a pin, thereby achieving a rotatable connection between the connecting piece and the positioning seat. Furthermore, retaining rings are provided at both ends of the pin to prevent it from falling off during use.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a first and second boss on the clamping platform and combining them with the arc-shaped groove design of the placement block, the valve body can be precisely aligned and stably placed. The synergistic effect of the clamping and positioning components further improves the clamping stability of the valve body, preventing positional shifts caused by vibration during processing. In particular, the lever cylinder design not only saves space but also extends service life through hardening treatment of the contacts. The implementation of the above technical solutions significantly improves the efficiency and accuracy of side machining of the valve body while reducing operational difficulty. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the lever cylinder of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a structural schematic diagram from another perspective of the present invention; Figure 4 This is a schematic diagram of the valve body to be processed.

[0014] Attached image annotations: 1. Hinge block; 2. Connecting piece; 3. Cylinder body; 4. Piston rod; 5. Clamping block; 6. Contact; 7. Positioning seat; 8. Pin; 9. Elevating block; 10. Positioning piece; 11. Opening; 12. First boss; 13. Second boss; 14. Clamping cylinder; 15. Clamping platform; 16. Pressing block; 17. Lever cylinder; 18. Positioning top block; 19. Placement block. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings: Combined with appendix Figure 1 To be continued Figure 4 The specific embodiments of this utility model are described in detail below. In practical applications, the purpose of designing the valve body side machining fixture is to solve the problems of insufficient positioning accuracy, poor clamping stability, and low operating efficiency existing in the prior art. The fixture provided in this embodiment includes a clamping platform 15, a lever cylinder 17, a clamping assembly, and a positioning assembly. The implementation process of its structure and function is as follows.

[0016] The clamping platform 15, as the core load-bearing component of the entire fixture, has a first boss 12 and a second boss 13 on its top surface. The first boss 12 and the second boss 13 are spaced apart along the length of the clamping platform 15, with the height of the first boss 12 greater than the height of the second boss 13. This height difference design allows the fixture to accommodate valve bodies of different specifications and provides better operating space for subsequent processing. Multiple placement blocks 19 are provided on the first boss 12 and the second boss 13, and these placement blocks 19 are fixedly connected to the top surface of the clamping platform 15 by bolts. The top surface of the placement blocks 19 has an arc-shaped groove, the shape of which matches the outer contour of the valve body to be processed, thereby ensuring that the valve body can be accurately positioned and remain stable during placement. In actual operation, the robotic arm places the valve body from front to back into the placement blocks 19 on the first boss 12 and the second boss 13. Due to the presence of the arc-shaped groove, the valve body can quickly complete the initial positioning, reducing the time required for manual adjustment.

[0017] The clamping assembly includes multiple clamping cylinders 14 and clamping blocks 16. The clamping cylinders 14 are fixedly mounted on the top surface of the clamping platform 15 and located between adjacent placement blocks 19. A clamping block 16 is fixedly connected to the top of the piston rod of each clamping cylinder 14. The clamping block 16 has a T-shaped structure, with both ends extending above the adjacent placement block 19. When the clamping cylinder 14 drives the piston rod to move upward, the two ends of the clamping block 16 press downward against the valve body on the adjacent placement block 19, thereby achieving a fixed clamping of the valve body. This design not only improves the stability of the clamping but also avoids positional displacement caused by vibration. In actual processing, the movement of the clamping cylinders 14 is coordinated by the control system to ensure that all valve bodies are clamped simultaneously, further improving processing efficiency.

[0018] The positioning assembly includes a positioning plate 10 and a positioning top block 18. The positioning plate 10 is fixedly mounted on the rear side of the clamping platform 15 and located on top of the shim block 9. An opening 11 is formed in the center of the positioning plate 10, the shape of which matches a protrusion on one side of the valve body. When the valve body is placed on the placement block 19, the protrusion of the valve body is embedded in the opening 11, thereby restricting the valve body's rotational freedom in the horizontal direction. The positioning top block 18 is fixedly mounted on the front side of the placement block 19, its top surface contacting the front end of the valve body to define the valve body's front-rear position. Through the coordinated action of the positioning plate 10 and the positioning top block 18, the valve body's position on the placement block 19 is precisely fixed, providing a reliable guarantee for subsequent processing.

[0019] The lever cylinder 17 is an important component of the clamp, comprising a cylinder body 3, a piston rod 4, a connecting piece 2, a clamping block 5, and a positioning seat 7. The cylinder body 3 is fixedly mounted on the left and right sides of the clamping platform 15. The end of the piston rod 4 is threadedly connected to a hinge block 1. One end of the hinge block 1 is hinged to the middle of the clamping block 5, and the other end is hinged to the top end of the connecting piece 2. The bottom end of the connecting piece 2 is hinged to the positioning seat 7 via a pin 8, and the positioning seat 7 is fixedly mounted on the outer wall of the cylinder body 3. Specifically, the end of the clamping block 5 is integrally formed with a contact 6, the surface of which is hardened to improve wear resistance. When the piston rod 4 extends outward, the hinge block 1 drives the clamping block 5 to rotate around the pin 8, causing the contact 6 to move towards the center of the clamping platform 15, thereby achieving auxiliary clamping of the valve body. This lever design not only saves space but also extends the service life of the contact 6 through hardening treatment.

[0020] The top sidewall of the hinge block 1 has a pair of parallel mating sidewalls, the distance between which is the same as the width of the connecting piece 2. The top end of the connecting piece 2 is hinged to the middle of the clamping block 5 via a pin 8. The middle of the clamping block 5 has an abutment groove for accommodating the top end of the connecting piece 2. Through this structural design, the clamping block 5 can achieve stable rotational movement under the combined action of the hinge block 1 and the connecting piece 2. This design ensures that the lever cylinder 17 operates smoothly during operation and will not deviate due to external interference.

[0021] The top of the positioning base 7 extends upward to form a pair of hinged clamping plates, with a through hole between the plates for inserting the pin 8. The bottom end of the connecting piece 2 is hinged to the hinged clamping plates via the pin 8, thus achieving a rotatable connection between the connecting piece 2 and the positioning base 7. Furthermore, retaining rings are provided at both ends of the pin 8 to prevent it from falling off during use. This design not only improves the reliability of the connection but also simplifies the assembly process and reduces maintenance costs.

[0022] In practical applications, the operation process of the valve body side processing fixture is as follows: S1, the robotic arm places the valve body to be processed from front to back into the placement blocks 19 on the first boss 12 and the second boss 13. The protrusion of the valve body is embedded into the opening 11 of the positioning plate 10, and at the same time, the top surface of the positioning top block 18 contacts the front end of the valve body, completing the initial positioning; S2, the control system starts the clamping cylinder 14, and the piston rod of the clamping cylinder 14 drives the pressure block 16 to move downward. The two ends of the pressure block 16 press against the valve body on the adjacent placement block 19, completing the main clamping action; S3, the piston rod 4 of the lever cylinder 17 extends outward, and the hinge block 1 drives the clamping block 5 to rotate around the pin shaft 8, so that the contact 6 moves toward the center of the clamping table 15, completing the auxiliary clamping action; S4, the processing equipment begins to process the valve body from the side. After the processing is completed, the clamping cylinder 14 and the lever cylinder 17 are reset in sequence, and the robotic arm removes the processed valve body, completing the entire processing process.

[0023] Through the above structural design and operating procedures, the valve body side machining fixture of this utility model achieves the goals of high-precision positioning, stable clamping, and efficient operation. The fixture design fully considers the needs of actual application scenarios, ensuring that the valve body will not shift or loosen during processing, significantly improving processing efficiency and product quality. Meanwhile, the design of the lever cylinder 17 not only saves space but also extends its service life through the hardening treatment of the contact 6, further enhancing the reliability and durability of the fixture.

[0024] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fixture for machining the side of a valve body, characterized in that: The system includes a clamping platform (15), a lever cylinder (17), a clamping assembly, and a positioning assembly. The top surface of the clamping platform (15) is provided with a first protrusion (12) and a second protrusion (13), which are spaced apart along the length of the clamping platform (15), with the height of the first protrusion (12) being greater than the height of the second protrusion (13). Multiple placement blocks (19) are respectively provided on the first protrusion (12) and the second protrusion (13), and adjacent placement blocks (19) are fixedly connected to the top surface of the clamping platform (15) by bolts. An arc-shaped groove is provided on the top surface of each placement block (19). The clamping assembly includes multiple clamping... The cylinder (14) and the pressure block (16) are fixedly installed on the top surface of the clamping platform (15) and located between adjacent placement blocks (19). The piston rod of the clamping cylinder (14) is fixedly connected to the pressure block (16). The pressure block (16) has a T-shaped structure and its two ends extend to the top of the adjacent placement block (19). The positioning assembly includes a positioning piece (10) and a positioning top block (18). The positioning piece (10) is fixedly installed on the rear side of the clamping platform (15) and located on the top of the raised block (9). An opening (11) is opened in the middle of the positioning piece (10). The positioning top block (18) is fixedly installed on the front side of the placement block (19).

2. The valve body side machining fixture according to claim 1, characterized in that: The lever cylinder (17) includes a cylinder body (3), a piston rod (4), a connecting piece (2), a clamping block (5), and a positioning seat (7). The cylinder body (3) is fixedly installed on the left and right sides of the clamping platform (15). The end of the piston rod (4) is connected to the hinge block (1) by a thread. One end of the hinge block (1) is hinged to the middle of the clamping block (5), and the other end is hinged to the top end of the connecting piece (2). The bottom end of the connecting piece (2) is hinged to the positioning seat (7) by a pin (8). The positioning seat (7) is fixedly installed on the outer wall of the cylinder body (3).

3. The valve body side machining fixture according to claim 2, characterized in that: The end of the clamping block (5) is integrally formed with a contact (6).

4. The valve body side machining fixture according to claim 1, characterized in that: The shape of the opening (11) of the positioning piece (10) matches the protrusion on one side of the valve body, and the top surface of the positioning top block (18) contacts the front end of the valve body.

5. The valve body side machining fixture according to claim 2, characterized in that: The top sidewall of the hinge block (1) has a pair of parallel mating sidewalls, and the distance between the mating sidewalls is the same as the width of the connecting piece (2).

6. The valve body side machining fixture according to claim 2, characterized in that: The top of the positioning seat (7) extends upward to form a pair of hinged clamps, and a through hole is provided between the hinged clamps for inserting the pin (8).

7. The valve body side machining fixture according to claim 6, characterized in that: The pin (8) has snap rings at both ends.

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