A fixture suitable for piston rod type parts

Abstract

The utility model discloses a kind of clamps suitable for piston rod class parts, it is related to rod class part processing field, including bottom plate, the upper surface one end of the bottom plate is fixedly connected with stand, the upper end of the stand is rotatably connected with cylinder, the inside of the cylinder is rotatably connected with three evenly distributed bending clamping arms, and the end of cylinder is equipped with to drive three bending clamping arm end mutual approach adjusting assembly. By placing the rod body in the cylinder, then rotating the threaded rod, under the principle of lever, the contact plate of the end of three horizontal parts is simultaneously mutual approach, the clamping and fixing of rod body are completed, then push the moving seat and limit coarse adjustment, rotate bolt and drive the fine adjustment seat to translate on the upper end of moving seat, further drive the conical head to extend into the tube hole of piston rod, complete fine adjustment to support and fix the other end of rod body, the whole operation process is quick and convenient, it is convenient to fix and process short rod and long rod, and the design of contact plate avoids indentation.

Description

Technical Field

[0001] This utility model relates to the field of rod-type parts processing technology, specifically to a fixture suitable for piston rod-type parts. Background Technology

[0002] The piston rod is a core connecting component in hydraulic cylinders, pneumatic cylinders and other motion actuators. It is mainly used to transmit force and drive the piston movement. The original blank of the piston rod needs to go through turning, grinding and other processes to achieve high dimensional accuracy.

[0003] Traditional clamps can only fix shorter rods. When fixing longer rods, the end of the rod may become unstable. In addition, traditional clamps are often designed with teeth on the clamping surface to ensure a firm grip, but this can leave indentations on the surface of rod parts, making post-processing more complicated. Utility Model Content

[0004] The purpose of this utility model is to provide a clamp suitable for piston rod parts in order to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a clamp suitable for piston rod-type parts, including a base plate. A column is fixedly connected to one end of the upper surface of the base plate. A cylinder is rotatably connected to the upper end of the column. Three evenly distributed bent clamping arms are rotatably connected inside the cylinder. An adjustment component is provided at the end of the cylinder to drive the ends of the three bent clamping arms to move closer together. A drive component is provided on the side wall of the column to drive the cylinder to rotate. A movable seat is provided on the other side of the upper surface of the base plate, which can move along its long side. A limiting structure is provided on the base plate to restrict the movement of the movable seat. A fine-tuning seat is provided at the upper end of the movable seat. A conical head is rotatably connected to the upper end of the fine-tuning seat. The conical head is on the same axis as the cylinder. A threaded adjustment component is provided at the upper end of the movable seat to drive the movement of the fine-tuning seat.

[0007] Preferably, the bending clamp arm includes a horizontal part and a support top, which are integrally formed and have an included angle of 100-110 degrees. The included angle between the horizontal part and the support top is the rotation point.

[0008] Preferably, the end of the horizontal part is rotatably connected to a contact plate, the surface of which is arc-shaped and provided with an anti-slip pad.

[0009] Preferably, a spring piece is connected between the top of the support and the inner wall of the cylinder.

[0010] Preferably, the adjusting assembly includes a threaded sleeve coaxial with the cylinder, both sides of which are fixedly connected to the inner wall of the cylinder via connecting arms. A threaded rod is threadedly connected to the threaded sleeve, and the end of the threaded rod is fixedly connected to a circular plate for simultaneously driving the top of the three supports to rotate.

[0011] Preferably, the drive assembly includes a motor fixedly mounted on the side wall of the column, a gear fixedly connected to the output shaft of the motor, and a gear ring fixedly connected to the cylinder to mesh with the gear.

[0012] Preferably, two ear plates are fixedly connected to one side of the upper surface of the base plate, and a sliding rod is fixedly connected between the two ear plates. A sliding hole that fits with the sliding rod is opened through the lower side of the movable seat, and the bottom surface of the movable seat is fitted with the base plate with a clearance.

[0013] Preferably, the limiting structure includes a movable groove formed on the bottom surface of the movable seat. One side wall of the movable groove is inclined. A locking plate is rotatably connected in the movable groove. A spring piece is connected between the locking plate and the inner wall of the movable groove to drive the locking plate to abut against the inclined surface. The surface of the base plate is provided with a ratchet rack that fits with the locking plate, and the ratchet rack has a concave design.

[0014] Preferably, a lever is fixedly connected to the side wall of the card plate, and the lever extends to the outside through an arc-shaped groove opened on the side wall of the movable slot.

[0015] Preferably, the threaded adjustment component includes a T-shaped block fixedly connected to the end of the upper surface of the movable seat, and the bottom surface of the fine-tuning seat is provided with a T-shaped groove that is slidably connected to the T-shaped block. A bolt is rotatably connected in the T-shaped groove, and a bolt hole adapted to the bolt thread is provided through the T-shaped block.

[0016] The beneficial effects are:

[0017] By placing the rod inside the cylinder and then rotating the threaded rod, the contact plates at the ends of the three horizontal sections simultaneously come together under the lever principle, thus clamping and fixing the rod. Then, the moving seat is pushed and limited to complete the coarse adjustment. Rotating the bolt drives the fine adjustment seat to move horizontally at the upper end of the moving seat, further driving the conical head to extend into the tube hole of the piston rod to complete the fine adjustment and support and fix the other end of the rod. The whole operation process is quick and convenient, making it easy to fix and process short and long rods. At the same time, the design of the contact plates avoids the formation of indentations. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is the first perspective view of the present invention;

[0020] Figure 2 This is the second perspective view of the present invention;

[0021] Figure 3 This is a cross-sectional perspective view of the movable base of this utility model;

[0022] Figure 4 This is a three-dimensional cross-sectional view of the cylindrical part of this utility model.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. Base plate; 2. Column; 3. Cylinder; 4. Bending clamping arm; 401. Horizontal part; 402. Top support; 403. Contact plate; 404. Spring piece one; 5. Adjustment assembly; 501. Threaded sleeve; 502. Connecting arm; 503. Threaded rod; 504. Circular plate; 6. Drive assembly; 601. Motor; 602. Gear; 603. Gear ring; 7. Moving seat; 8. Fine-tuning seat; 9. Conical head; 10. Ear plate; 11. Slide rod; 12. Slide hole; 13. Ratchet; 14. Movable groove; 15. Clamping plate; 16. Spring piece two; 17. T-block; 18. T-shaped slide groove; 19. Bolt; 20. Bolt hole; 21. Arc groove; 22. Lever. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] See Figures 1-4As shown, this utility model provides a clamp suitable for piston rod-type parts, including a base plate 1, a column 2 fixedly connected to one end of the upper surface of the base plate 1, a cylinder 3 rotatably connected to the upper end of the column 2, three evenly distributed bent clamping arms 4 rotatably connected inside the cylinder 3, and an adjustment component 5 for driving the ends of the three bent clamping arms 4 to move closer together at the end of the cylinder 3. A drive component 6 for driving the cylinder 3 to rotate is provided on the side wall of the column 2. A movable seat 7 that can move along its long side is provided on the other side of the upper surface of the base plate 1, and a limiting structure for limiting the movement of the movable seat 7 is provided on the base plate 1. A fine-tuning seat 8 is provided at the upper end of the movable seat 7, and a conical head 9 is rotatably connected to the upper end of the fine-tuning seat 8. The conical head 9 is on the same axis as the cylinder 3. A threaded adjustment component for driving the fine-tuning seat 8 to move is provided at the upper end of the movable seat 7.

[0027] Reference Figure 4 As shown, the bending clamping arm 4 includes a horizontal part 401 and a support top 402. The horizontal part 401 and the support top 402 are integrally formed, and the included angle between them is 100-110 degrees. The included angle between the horizontal part 401 and the support top 402 is the rotation point. The end of the horizontal part 401 is rotatably connected to a contact plate 403. The surface of the contact plate 403 is arc-shaped and equipped with an anti-slip pad. A spring piece 404 is connected between the support top 402 and the inner wall of the cylinder 3. After the contact plate 403 contacts the surface of the rod, it can rotate to an angle that fits the surface of the rod, which improves the clamping and fixing effect and avoids indentation. Under the action of its elasticity, when the support top 402 is not under force, the spring piece 404 can push the three bending clamping arms 4 to rotate, so that the three bending clamping arms 4 naturally open, which is convenient for the next fixing.

[0028] As an optional implementation, the adjusting assembly 5 includes a threaded sleeve 501 coaxially arranged with the cylinder 3. Both sides of the threaded sleeve 501 are fixedly connected to the inner wall of the cylinder 3 via connecting arms 502. A threaded rod 503 is threadedly connected to the threaded sleeve 501. The end of the threaded rod 503 is fixedly connected to a circular plate 504 for simultaneously driving the three support tops 402 to rotate. By rotating the threaded rod 503, it drives the circular plate 504 to move inside the cylinder 3, causing the three support tops 402 to rotate simultaneously toward the threaded sleeve 501. Under the lever principle, the contact plates 403 at the ends of the three horizontal parts 401 simultaneously approach each other, completing the clamping and fixing of the rod. The contact surface between the circular plate 504 and the three support tops 402 can be set as a conical surface to reduce rotational wear. At the same time, the circular plate 504 and the threaded rod 503 can be rotatably connected, which can also reduce wear.

[0029] As an optional implementation, the drive assembly 6 includes a motor 601 fixedly mounted on the side wall of the column 2. A gear 602 is fixedly connected to the output shaft of the motor 601, and a gear ring 603 that meshes with the gear 602 is fixedly connected to the cylinder 3. By starting the motor 601, the gear 602 is driven to rotate, and the gear 602 drives the meshing cylinder 3 to rotate, thereby driving the fixed rod to rotate, which facilitates subsequent processing operations on the rod.

[0030] Reference Figure 2 As shown, two ear plates 10 are fixedly connected to one side of the upper surface of the base plate 1, and a slide rod 11 is fixedly connected between the two ear plates 10. A sliding hole 12 that fits with the slide rod 11 is opened through the lower side of the movable seat 7, and the bottom surface of the movable seat 7 is fitted with the base plate 1 with a clearance, which makes the movable seat 7 more stable when moving horizontally.

[0031] Reference Figure 3 As shown, the limiting structure includes a movable groove 14 on the bottom surface of the movable seat 7. One side wall of the movable groove 14 is inclined. A locking plate 15 is rotatably connected in the movable groove 14. A second spring piece 16 is connected between the locking plate 15 and the inner wall of the movable groove 14 to drive the locking plate 15 to abut against the inclined surface. The surface of the base plate 1 is provided with a ratchet 13 that fits into the locking plate 15. The ratchet 13 is concave. When the movable seat 7 moves towards the column 2, the ratchet 13 continuously supports the locking plate 15 to overcome the elastic force of the second spring piece 16 and rotate upward. After moving to the appropriate position, the locking plate 15 engages with the ratchet 13 under the elastic force of the second spring piece 16 and cannot move in the opposite direction, thus realizing the coarse adjustment of the position of the conical head 9. The inner inclined surface of the movable groove 14 can stably support the locking plate 15 and avoid the situation where the locking plate 15 has insufficient support force. The concave design of the ratchet 13 can avoid the outward protrusion that would affect the movement of the movable seat 7.

[0032] Specifically, a lever 22 is fixedly connected to the side wall of the card plate 15. The lever 22 extends to the outside through the arc-shaped groove 21 opened on the side wall of the movable groove 14. When it is necessary to move the movable seat 7 away from the column 2, the lever 22 is pulled up, which drives the card plate 15 to overcome the elastic force of the spring plate 16 and rotate upward in the movable groove 14. At this time, the card plate 15 is not engaged with the ratchet rack 13, and the movable seat 7 can move freely.

[0033] As an optional implementation, the threaded adjustment component includes a T-shaped block 17 fixedly connected to the upper end of the moving seat 7. The bottom surface of the fine-tuning seat 8 is provided with a T-shaped groove 18 that is slidably connected to the T-shaped block 17. A bolt 19 is rotatably connected in the T-shaped groove 18. A bolt hole 20 that is threaded and adapted to the bolt 19 is provided through the T-shaped block 17. Rotating the bolt 19 causes it to move the fine-tuning seat 8 horizontally on the upper end of the moving seat 7 through the threaded connection with the T-shaped block 17. At the same time, the sliding connection between the T-shaped block 17 and the T-shaped groove 18 makes the movement of the fine-tuning seat 8 more stable, and further drives the conical head 9 to extend into the tube hole of the piston rod to complete the fine adjustment.

[0034] The working principle of this utility model:

[0035] In use, the rod is placed inside the cylinder 3, and then the threaded rod 503 is rotated, causing the circular plate 504 to move inside the cylinder 3. This causes the three support tops 402 to rotate simultaneously toward the threaded sleeve 501. Under the lever principle, the contact plates 403 at the ends of the three horizontal parts 401 move closer to each other, clamping and fixing the rod. Then, the moving seat 7 is pushed, causing the lower end of the locking plate 15 to continuously engage with the ratchet rack 13. When the conical head 9 abuts against the end of the rod, coarse adjustment is completed. The screw is then rotated... Bolt 19 causes the fine-tuning seat 8 to move horizontally on the upper end of the moving seat 7 through a threaded connection with T-block 17. At the same time, T-block 17 and T-slot 18 are slidably connected to make the movement of fine-tuning seat 8 more stable. This further drives the conical head 9 to extend into the tube hole of the piston rod, completing the fine adjustment and supporting and fixing the other end of the rod. Then, the motor 601 is started to drive the gear 602 to rotate. The gear 602 drives the meshing cylinder 3 to rotate, thereby driving the fixed rod to rotate, which facilitates subsequent processing operations on the rod.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A clamp suitable for piston rod-type parts, characterized in that: The system includes a base plate (1), with a column (2) fixedly connected to one end of the upper surface of the base plate (1). A cylinder (3) is rotatably connected to the upper end of the column (2). Three evenly distributed bent clamping arms (4) are rotatably connected inside the cylinder (3). An adjustment assembly (5) is provided at the end of the cylinder (3) to drive the ends of the three bent clamping arms (4) to move closer together. A drive assembly (6) is provided on the side wall of the column (2) to drive the cylinder (3) to rotate. The upper surface of the base plate (1) is provided with a movable seat (7) that can move along its long side. The base plate (1) is provided with a limiting structure to restrict the movement of the movable seat (7). The upper end of the movable seat (7) is provided with a fine-tuning seat (8). The upper end of the fine-tuning seat (8) is rotatably connected to a conical head (9). The conical head (9) is on the same axis as the cylinder (3). The upper end of the movable seat (7) is provided with a threaded adjustment component to drive the fine-tuning seat (8) to move.

2. A clamping device for piston rod-type parts according to claim 1, characterized in that: The bending clamp arm (4) includes a horizontal part (401) and a support top (402). The horizontal part (401) and the support top (402) are integrally formed, and the included angle between them is 100-110 degrees. The included angle between the horizontal part (401) and the support top (402) is the rotation point.

3. A fixture suitable for piston rod-type parts according to claim 2, characterized in that: The end of the horizontal part (401) is rotatably connected to a contact plate (403), the surface of which is arc-shaped and has an anti-slip pad.

4. A fixture suitable for piston rod-type parts according to claim 2, characterized in that: A spring piece (404) is connected between the top of the support (402) and the inner wall of the cylinder (3).

5. A fixture for piston rod-type parts according to claim 4, characterized in that: The adjusting assembly (5) includes a threaded sleeve (501) coaxially arranged with the cylinder (3). Both sides of the threaded sleeve (501) are fixedly connected to the inner wall of the cylinder (3) through connecting arms (502). A threaded rod (503) is threadedly connected to the threaded sleeve (501). The end of the threaded rod (503) is fixedly connected to a circular plate (504) for simultaneously driving the three support tops (402) to rotate.

6. A fixture for piston rod-type parts according to claim 1, characterized in that: The drive assembly (6) includes a motor (601) fixedly installed on the side wall of the column (2), a gear (602) is fixedly connected to the output shaft of the motor (601), and a gear ring (603) that meshes with the gear (602) is fixedly connected to the cylinder (3).

7. A fixture for piston rod-type parts according to claim 1, characterized in that: Two ear plates (10) are fixedly connected to one side of the upper surface of the base plate (1), and a slide rod (11) is fixedly connected between the two ear plates (10). A sliding hole (12) is opened through the lower side of the movable seat (7) and sleeved with the slide rod (11), and the bottom surface of the movable seat (7) is in clearance fit with the base plate (1).

8. A fixture for piston rod-type parts according to claim 1, characterized in that: The limiting structure includes an active groove (14) on the bottom surface of the movable seat (7). One side wall of the active groove (14) is inclined. A locking plate (15) is rotatably connected in the active groove (14). A spring piece (16) is connected between the locking plate (15) and the inner wall of the active groove (14) to drive the locking plate (15) to abut against the inclined surface. The surface of the base plate (1) is provided with a ratchet (13) that fits with the locking plate (15), and the ratchet (13) is concave.

9. A fixture for piston rod-type parts according to claim 8, characterized in that: A lever (22) is fixedly connected to the side wall of the card plate (15), and the lever (22) extends to the outside through the arc-shaped groove (21) opened on the side wall of the movable groove (14).

10. A clamping device for piston rod-type parts according to claim 1, characterized in that: The threaded adjustment component includes a T-shaped block (17) fixedly connected to the upper end of the movable seat (7). The bottom surface of the fine-tuning seat (8) is provided with a T-shaped groove (18) that is slidably connected to the T-shaped block (17). A bolt (19) is rotatably connected in the T-shaped groove (18). A bolt hole (20) adapted to the thread of the bolt (19) is provided through the T-shaped block (17).

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