Valve ball forging blank centering fixture

Abstract

The utility model discloses a valve ball forging blank centering fixture, including mounting panel, the mounting panel whole is the positive hexahedron structure setting, and located mounting panel top circumferential direction sliding connection has a plurality of clamping blocks and auxiliary blocks, and a plurality of clamping blocks and auxiliary blocks are set apart equidistantly, the top circumferential direction of mounting panel limit sliding connection has a plurality of connecting pieces, and a plurality of connecting pieces are movably connected to the clamping block and auxiliary block of its adjacent two sides respectively, so that the clamping block and auxiliary block realize the collaborative operation with connecting piece. The utility model provides power through drive mechanism, and the transmission effect of cooperation connecting piece, realizes the collaborative movement of clamping block and auxiliary block, can gather from a plurality of directions to blank center, realizes accurate centering clamping, effectively improves the centering accuracy, reduces the processing error.

Description

Technical Field

[0001] This utility model relates to the field of forging processing technology, and in particular to a centering fixture for valve ball forging blanks. Background Technology

[0002] As a core component of a valve, the forging quality of the valve ball directly affects the valve's sealing performance, service life, and overall operational stability. Precise centering and clamping of the forged billet is a crucial step in the valve ball forging process. The accuracy and stability of this centering and clamping directly determine the precision of subsequent processing steps, and are an important prerequisite for ensuring the final quality of the valve ball.

[0003] Traditional valve ball forging billet centering fixtures have many technical problems in practical applications: some fixtures use a single clamping point or an asymmetrical clamping structure, resulting in uneven force on the billet, which easily leads to displacement and shaking during clamping, making it difficult to guarantee centering accuracy; some fixtures have asynchronous movement of clamping components, making it impossible to achieve synchronous approach and centering in multiple directions, further increasing processing errors; at the same time, the structural design of traditional fixtures is often relatively complex, cumbersome to operate, inconvenient to disassemble and maintain, and easily damages the surface of the billet during clamping, affecting the subsequent processing effect, making it difficult to meet the needs of modern, efficient, and high-precision valve ball forging production. Therefore, this utility model proposes a valve ball forging billet centering fixture. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a centering fixture for valve ball forging blanks. The fixture has a reasonable structural design, which can achieve precise centering and clamping of valve ball forging blanks, improve clamping stability and centering accuracy, and is easy to operate, thus meeting processing requirements.

[0005] To solve the above-mentioned technical problems, the present invention provides a centering fixture for valve ball forging blanks, including a mounting plate. The mounting plate is generally hexagonal in structure, and multiple clamping blocks and auxiliary blocks are slidably connected to the top circumference of the mounting plate. The multiple clamping blocks and auxiliary blocks are arranged in an alternating and equidistant manner. Multiple connecting members are slidably connected to the top circumference of the mounting plate. The multiple connecting members are respectively movably connected to the clamping blocks and auxiliary blocks on their adjacent sides, so as to enable the clamping blocks and auxiliary blocks to cooperate in operation using the connecting members.

[0006] A drive mechanism is welded to one side wall of the mounting plate, and the output end of the drive mechanism is connected to the end face of one of the clamping blocks to drive the clamping blocks and enable them to center and clamp the forging blank.

[0007] The present invention is further configured such that: mounting holes are provided at the top of the mounting plate and at each of the six corners; a positioning groove is provided at the center of the top of the mounting plate; and a positioning hole is provided at the center of the positioning groove.

[0008] Through the above technical solution, the mounting holes are used to fix the mounting plate to the external equipment, ensuring the stability of the overall installation of the fixture; the positioning groove cooperates with the positioning holes to play a preliminary positioning and guiding role when the blank is placed, laying the foundation for subsequent precise centering and clamping, and reducing centering error.

[0009] The present invention is further configured such that: the driving mechanism includes a fixed plate welded to one side wall of the mounting plate, one end of the fixed plate is provided with a connecting pin, and a cylinder is mounted through the pin, the output end of the cylinder is connected to the end face of one of the clamping blocks by a fixed connecting block bolt.

[0010] Through the above technical solution, the fixing plate provides stable installation support for the cylinder through the connecting pin. The cylinder, as a power source, transmits the driving force to the corresponding clamping block through the connecting block at its output end, realizing the linear reciprocating motion of the clamping block, providing power for centering and clamping, and the bolt connection method facilitates the disassembly and maintenance of the drive mechanism and the clamping block.

[0011] The present invention is further configured such that: a slider A is fixedly connected to the bottom of each of the plurality of clamping blocks, and the slider A is slidably connected to a slide rail opened at the corresponding position on the top of the mounting plate; an extension block is fixedly connected to the opposite end of each of the plurality of clamping blocks, and an arc-shaped portion is fixedly connected to the end face of the extension block.

[0012] Through the above technical solution, the sliding cooperation between slider A and slide rail limits the movement trajectory of the clamping block, ensuring that the clamping block moves smoothly along the preset direction and avoiding deviation that affects the centering accuracy; the extension block extends the clamping length of the clamping block, and the arc-shaped part is adapted to the outer surface of the valve ball forging blank, which can increase the contact area between the clamping block and the blank, improve the stability of clamping, and at the same time avoid damage to the surface of the blank during the clamping process.

[0013] The present invention is further configured such that: the bottom of each of the plurality of auxiliary blocks is fixedly connected to a slider B, and the slider B is slidably connected to the corresponding slide rail.

[0014] Through the above technical solution, the slider B cooperates with the slide rail to provide guidance and support for the sliding of the auxiliary block, so that the auxiliary block can move smoothly and synchronously with the clamping block. The auxiliary clamping block realizes all-round clamping of the billet, further improving the stability and balance of clamping.

[0015] The present invention is further configured such that: the connecting member includes a limiting shaft, a first connecting rod is fixedly connected to one side of the top of the limiting shaft, and a second connecting rod is fixedly connected to the other side of the limiting shaft. The first connecting rod and the second connecting rod are respectively inserted into guide holes A and guide holes B opened at corresponding positions in the middle of the clamping blocks and the auxiliary blocks on both sides, and the first connecting rod and the second connecting rod located inside the same clamping block or auxiliary block are arranged in a superimposed sliding configuration.

[0016] Through the above technical solution, the limiting shaft plays a connecting and limiting role. The cooperation between the first connecting rod and the guide hole A, and the second connecting rod and the guide hole B, realizes the movable connection between the connecting part and the clamping block and the auxiliary block. When one of the clamping blocks moves under the action of the driving mechanism, the transmission action of the connecting part can drive the adjacent auxiliary block and other clamping blocks to move synchronously, realize the coordinated clamping action of the clamping block and the auxiliary block, ensure that all clamping parts move towards the center of the blank synchronously, and improve the centering accuracy. The first connecting rod and the second connecting rod, which are superimposed and slidably set, can adapt to the change in distance between the clamping block and the auxiliary block, ensuring the smoothness of transmission.

[0017] The present invention is further configured such that: the limiting shaft passes through the limiting groove opened at the top of the mounting plate, and the outer wall of the limiting shaft is smoothly attached to the inner wall of the limiting groove.

[0018] Through the above technical solution, the limiting slide groove limits the movement range of the limiting shaft, preventing the connecting parts from shifting during transmission and ensuring the accuracy of the transmission direction; the smooth fit between the limiting shaft and the limiting slide groove reduces the sliding friction between the two, allowing the limiting shaft to slide smoothly within the limiting slide groove, thus improving the flexibility and stability of the entire fixture operation.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model provides power through a drive mechanism, which, in conjunction with the transmission action of the connecting parts, enables the coordinated movement of the clamping block and the auxiliary block. This allows the blocks to move synchronously toward the center of the blank from multiple directions, achieving precise centering and clamping, effectively improving centering accuracy and reducing processing errors.

[0021] 2. The arc-shaped part on the clamping block is adapted to the outer surface of the blank, increasing the contact area. At the same time, the setting of the auxiliary block further improves the clamping stability, preventing the blank from loosening or shifting during processing and ensuring the stability of the processing.

[0022] 3. The entire fixture has a reasonable structural design, smooth cooperation between various components, and convenient operation. Furthermore, the design of the slider and slide rail, limit shaft and limit slide groove ensures the stability and accuracy of the movement. It is easy to disassemble and maintain and has strong practicality. Attached Figure Description

[0023] Figure 1 This is a structural diagram of a valve ball forging blank centering fixture according to the present invention;

[0024] Figure 2 This is a top view of a valve ball forging blank centering fixture according to the present invention;

[0025] Figure 3 This is a structural diagram of the mounting plate in a centering fixture for valve ball forging blanks according to this utility model;

[0026] Figure 4 This is a structural diagram of the clamping block in a centering fixture for valve ball forging blanks according to this utility model;

[0027] Figure 5 This is a structural diagram of the connecting component in a centering fixture for valve ball forging blanks according to this utility model;

[0028] Figure 6 This is a structural diagram of the auxiliary block in a centering fixture for valve ball forging blanks according to this utility model.

[0029] In the diagram: 1. Mounting plate; 11. Mounting hole; 12. Slide rail; 13. Limiting slide groove; 14. Positioning groove; 15. Positioning hole; 2. Drive mechanism; 21. Fixing plate; 22. Pin; 23. Cylinder; 24. Connecting block; 3. Clamping block; 31. Slider A; 32. Guide hole A; 33. Extension block; 34. Arc-shaped part; 4. Connecting piece; 41. Limiting shaft; 42. First connecting rod; 43. Second connecting rod; 5. Auxiliary block; 51. Slider B; 52. Guide hole B. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0031] like Figures 1-3 As shown, a valve ball forging blank centering fixture includes a mounting plate 1. The mounting plate 1 is a regular hexagonal structure. Mounting holes 11 are provided at the top of the mounting plate 1 and at each of the six corners. A positioning groove 14 is provided at the center of the top of the mounting plate 1, and a positioning hole 15 is provided at the center of the positioning groove 14. The mounting holes 11 are used to fix the mounting plate 1 to the external equipment, ensuring the stability of the overall fixture installation. The positioning groove 14 and the positioning hole 15 cooperate to play a preliminary positioning and guiding role when the blank is placed, laying the foundation for subsequent precise centering and clamping, and reducing centering errors.

[0032] like Figure 1 , Figure 4 and Figure 6As shown, multiple clamping blocks 3 and auxiliary blocks 5 are slidably connected in the circumferential direction at the top of the mounting plate 1, and the multiple clamping blocks 3 and auxiliary blocks 5 are arranged in an alternating and equidistant manner. Multiple connecting pieces 4 are slidably connected in the circumferential direction at the top of the mounting plate 1. The multiple connecting pieces 4 are respectively movably connected to the clamping blocks 3 and auxiliary blocks 5 on their adjacent sides, so that the clamping blocks 3 and auxiliary blocks 5 can be coordinated to operate using the connecting pieces 4.

[0033] Each of the multiple clamping blocks 3 has a slider A31 fixedly connected to its bottom, and is slidably connected to a slide rail 12 located at the top of the mounting plate 1 via the slider A31. Each of the multiple clamping blocks 3 has an extension block 33 fixedly connected to its opposite end, and an arc-shaped portion 34 is fixedly connected to the end face of the extension block 33. The sliding cooperation between the slider A31 and the slide rail 12 limits the movement trajectory of the clamping block 3, ensuring that the clamping block 3 moves smoothly along the preset direction and avoiding deviation that affects the centering accuracy. The extension block 33 extends the clamping length of the clamping block 3, and the arc-shaped portion 34 is adapted to the outer surface of the valve ball forging blank, which can increase the contact area between the clamping block 3 and the blank, improve the stability of clamping, and at the same time avoid damage to the surface of the blank during clamping.

[0034] Multiple auxiliary blocks 5 are fixedly connected to the bottom of a slider B51, and are slidably connected to the corresponding slide rail 12 through the slider B51. The slider B51 and the slide rail 12 cooperate to provide guidance and support for the sliding of the auxiliary block 5, so that the auxiliary block 5 can move synchronously and smoothly with the clamping block 3. The auxiliary clamping block 3 realizes all-round clamping of the billet, further improving the stability and balance of clamping.

[0035] like Figure 1 and Figure 5 As shown, the connector 4 includes a limiting shaft 41. A first connecting rod 42 is fixedly connected to one side of the top of the limiting shaft 41, and a second connecting rod 43 is fixedly connected to the other side. The first connecting rod 42 and the second connecting rod 43 are respectively inserted into guide holes A32 and guide holes B52 opened at corresponding positions in the middle of the clamping blocks 3 and auxiliary blocks 5 on both sides. The first connecting rod 42 and the second connecting rod 43 located inside the same clamping block 3 or auxiliary block 5 are arranged in a superimposed sliding configuration. The limiting shaft 41 serves to connect and limit the connection. The first connecting rod 42, the guide hole A32, and the second connecting rod... The cooperation between connector 43 and guide hole B52 enables the movable connection between connector 4, clamping block 3, and auxiliary block 5. When one of the clamping blocks 3 moves under the action of drive mechanism 2, the transmission action of connector 4 can drive the adjacent auxiliary block 5 and other clamping blocks 3 to move synchronously, realizing the coordinated clamping action of clamping block 3 and auxiliary block 5, ensuring that the clamping components move towards the center of the blank synchronously, and improving the centering accuracy. The first connecting rod 42 and the second connecting rod 43, which are superimposed and slidably set, can adapt to the change in distance between clamping block 3 and auxiliary block 5, ensuring the smoothness of transmission.

[0036] The limiting shaft 41 passes through the limiting groove 13 corresponding to the top of the mounting plate 1. At the same time, the outer wall of the limiting shaft 41 is smoothly attached to the inner wall of the limiting groove 13. The limiting groove 13 limits the range of motion of the limiting shaft 41, preventing the connecting part 4 from shifting during transmission and ensuring the accuracy of the transmission direction. The smooth attachment between the limiting shaft 41 and the limiting groove 13 reduces the sliding friction between them, allowing the limiting shaft 41 to slide smoothly within the limiting groove 13, thus improving the flexibility and stability of the entire fixture operation.

[0037] like Figure 1 As shown, a drive mechanism 2 is welded to one side wall of the mounting plate 1, and the output end of the drive mechanism 2 is connected to the end face of one of the clamping blocks 3 to drive the clamping block 3 and enable it to center and clamp the forging blank. The drive mechanism 2 includes a fixing plate 21 welded to one side wall of the mounting plate 1. A connecting pin 22 is provided at one end of the fixing plate 21, and a cylinder 23 is installed through the pin 22. The output end of the cylinder 23 is bolted to the end face of one of the clamping blocks 3 through a fixed connecting block 24. The fixing plate 21 provides stable mounting support for the cylinder 23 through the connecting pin 22. The cylinder 23 serves as a power source, and its output end transmits the driving force to the corresponding clamping block 3 through the connecting block 24 to realize the linear reciprocating motion of the clamping block 3, providing power for centering and clamping. The bolt connection method facilitates the disassembly and maintenance of the drive mechanism 2 and the clamping block 3.

[0038] In use, the cylinder 23 in the drive mechanism 2 is activated. The output end of the cylinder 23 pushes the clamping block 3 connected to it to move through the connecting block 24. The clamping block 3 slides along the slide rail 12 towards the blank through the bottom slider A31. Since the clamping block 3 is connected to the adjacent auxiliary block 5 through the connecting piece 4, when the clamping block 3 moves, it drives the first connecting rod 42 to move through the guide hole A32, thereby causing the limiting shaft 41 to slide along the limiting slide groove 13. At the same time, the second connecting rod 43 drives the auxiliary block 5 to move synchronously along the slide rail 12 through the guide hole B52. Under the sequential transmission action of the connecting piece 4, the clamping block 3 and the auxiliary block 5 move synchronously towards the center of the blank until the arc-shaped part 34 on the clamping block 3 is tightly attached to the outer surface of the blank, thereby achieving the centering and clamping fixation of the blank. After processing, the cylinder 23 is reset, which drives the clamping block 3 and the auxiliary block 5 to move synchronously away from the blank, and the processed blank can be taken out.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A centering fixture for valve ball forging blanks, comprising a mounting plate (1), characterized in that, The mounting plate (1) is a regular hexagonal structure, and multiple clamping blocks (3) and auxiliary blocks (5) are slidably connected in the circumferential direction at the top of the mounting plate (1). The multiple clamping blocks (3) and auxiliary blocks (5) are arranged in an alternating and equidistant manner. Multiple connectors (4) are slidably connected in the circumferential direction at the top of the mounting plate (1). The multiple connectors (4) are movably connected to the clamping blocks (3) and auxiliary blocks (5) on their adjacent sides, so that the clamping blocks (3) and auxiliary blocks (5) can achieve cooperative operation by using the connectors (4). A drive mechanism (2) is welded to one side wall of the mounting plate (1), and the output end of the drive mechanism (2) is connected to the end face of one of the clamping blocks (3) to drive the clamping block (3) so that it can complete the centering and clamping of the forging blank.

2. The valve ball forging billet centering fixture according to claim 1, characterized in that, Mounting holes (11) are provided at the top of the mounting plate (1) and at the six corners. A positioning groove (14) is provided at the center of the top of the mounting plate (1), and a positioning hole (15) is provided at the center of the positioning groove (14).

3. A centering fixture for valve ball forging blanks according to claim 1, characterized in that, The drive mechanism (2) includes a fixed plate (21) welded to one side wall of the mounting plate (1). One end of the fixed plate (21) is provided with a connecting pin (22), and a cylinder (23) is installed through the pin (22). The output end of the cylinder (23) is bolted to the end face of one of the clamping blocks (3) through a fixed connecting block (24).

4. A centering fixture for valve ball forging blanks according to claim 3, characterized in that, Each of the clamping blocks (3) has a slider A (31) fixedly connected to its bottom, and the slider A (31) is slidably connected to the slide rail (12) opened at the top of the mounting plate (1). Each of the clamping blocks (3) has an extension block (33) fixedly connected to its opposite end, and the end face of the extension block (33) is fixedly connected to an arc-shaped part (34).

5. A centering fixture for valve ball forging blanks according to claim 4, characterized in that, Each of the auxiliary blocks (5) has a slider B (51) fixedly connected to its bottom, and is slidably connected to the corresponding slide rail (12) through the slider B (51).

6. A centering fixture for valve ball forging blanks according to claim 5, characterized in that, The connector (4) includes a limiting shaft (41). A first connecting rod (42) is fixedly connected to one side of the top of the limiting shaft (41), and a second connecting rod (43) is fixedly connected to the other side. The first connecting rod (42) and the second connecting rod (43) are respectively inserted into guide holes A (32) and guide holes B (52) opened at corresponding positions in the middle of the clamping blocks (3) and the auxiliary block (5) on both sides. The first connecting rod (42) and the second connecting rod (43) located inside the same clamping block (3) or auxiliary block (5) are arranged in a superimposed sliding configuration.

7. A centering fixture for valve ball forging blanks according to claim 6, characterized in that, The limiting shaft (41) passes through the limiting groove (13) opened at the top of the mounting plate (1), and the outer wall of the limiting shaft (41) is smoothly attached to the inner wall of the limiting groove (13).

Images