Clamp for piston rod machining

Abstract

The clamp comprises a lower mounting plate, an upper mounting plate, a guide rod and a clamping assembly, the upper mounting plate and the lower mounting plate are arranged in parallel, the guide rod is connected to the lower mounting plate, the upper mounting plate is slidably connected with the guide rod, and the clamping assembly comprises an upper clamping block and a lower clamping block; the upper clamping blocks are arranged on the side, close to the lower mounting plate, of the upper mounting plate, the lower clamping blocks are arranged on the side, close to the upper mounting plate, of the lower mounting plate, the multiple upper clamping blocks and the multiple lower clamping blocks are arranged in a one-to-one correspondence mode, and clamping grooves are formed in the sides, close to each other, of the upper clamping blocks and the lower clamping blocks. An adjusting sliding groove is formed in the lower mounting plate, the lower clamping block is arranged in the adjusting sliding groove in a sliding mode, and an adjusting piece used for adjusting the position of the lower clamping block is arranged on the lower mounting plate. The clamp has the effects that the application range of the clamp is expanded, and the clamping efficiency of the clamp is improved.

Description

Technical Field

[0001] The present application relates to the technical field of piston rod processing, and in particular to a clamp used for piston rod processing. Background Art

[0002] The piston rod is a connecting component that supports the piston to do work. It is often used in the motion execution components of oil cylinders and gas cylinders. It is a moving component with frequent movements and high technical requirements. The processing quality of the piston rod will directly affect the service life of the product. Therefore, the processing of the piston rod has strict requirements on the axiality and wear resistance. The piston rod must have sufficient structural strength, rigidity and stability, and the structure must also minimize the influence of stress concentration.

[0003] At present, a Chinese patent with announcement number CN204565669U discloses a clamp for processing piston rods, which includes a clamp body, a lower clamp connected to the side of the clamp body, and an upper clamp connected to the lower clamp; a receiving cavity for placing the head of the piston rod is formed in the clamp body; a plurality of lower positioning grooves and a plurality of upper positioning grooves are respectively provided on the opposite sides of the lower clamp and the upper clamp, and the lower positioning grooves and the corresponding upper positioning grooves form a cavity for positioning the tail of the piston rod.

[0004] With respect to the above-mentioned related technologies, the inventors believe that in the process of clamping the piston rod by the above-mentioned piston rod processing clamp, since several piston rods are placed between the upper positioning groove and the lower positioning groove of the upper clamp and the lower clamp at the same time, the clamp can only clamp piston rods of one diameter size during a single use, thereby reducing the clamping efficiency of the clamp. Utility Model Content

[0005] In order to expand the application scope of the clamp and improve the clamping efficiency of the clamp, the present application provides a clamp for piston rod processing.

[0006] The present application provides a fixture for piston rod processing that adopts the following technical solution:

[0007] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0008] By adopting the above technical solution, before clamping, the position of the lower clamp block is adjusted using an adjusting piece so that it can be applied to piston rods of different diameters. A plurality of upper clamp blocks and a corresponding plurality of lower clamp blocks realize multi-position clamping of the piston rod, which helps to improve the clamping efficiency of the device. Through the mutual cooperation of the lower mounting plate, the upper mounting plate, the guide rod and the clamping assembly, the application range of the clamp is expanded and the clamping efficiency of the clamp is improved.

[0009] Optionally, the guide rods are provided with a plurality of guide rods on the lower mounting plate, the guide rods pass through the upper mounting plate and slideably cooperate with the same, the guide rods are connected to a connecting top plate at one end away from the lower mounting plate, the connecting top plates are provided with two, a pressing assembly is provided on the connecting top plate, the pressing assembly includes a rotating rod and an extrusion eccentric wheel, the rotating rod is rotatably connected between the two connecting top plates, the rotating rod is arranged parallel to the upper mounting plate, the extrusion eccentric wheel is sleeved on the rotating rod, an elastic member is arranged between the upper mounting plate and the lower mounting plate, and the upper mounting plate is pressed against the peripheral wall of the extrusion eccentric wheel under the action of the elastic member.

[0010] By adopting the above technical solution, the rotating rod is rotated, the extrusion eccentric wheel rotates accordingly and presses the upper mounting plate downward, the upper clamping block descends along with the upper mounting plate, and the upper clamping block and the lower clamping block clamp the piston rod.

[0011] Optionally, the adjusting member includes an adjusting screw, which is threadedly connected to the lower mounting plate, and one end of the adjusting screw extends into the adjusting slot and is rotatably connected to the lower clamping block.

[0012] By adopting the above technical solution, before positioning and clamping the piston rod, the adjusting screw is rotated, and the lower clamping block slides in the vertical direction under the drive of the adjusting screw and the limiting guide of the adjusting slide groove, thereby realizing the position adjustment of the lower clamping block.

[0013] Optionally, a sliding rod is connected to the lower clamping block, a sliding hole corresponding to the sliding rod is opened on the bottom wall of the adjusting slide groove, one end of the sliding rod is slidably set in the sliding hole, and the sliding rod is set parallel to the adjusting screw.

[0014] By adopting the above technical solution, when the lower clamping block is adjusted, the sliding rod slides in the sliding hole, thereby improving the stability of the lower clamping block.

[0015] Optionally, the adjusting member includes a pushing block, a pushing screw and a return spring, the lower clamping block is provided with an abutting inclined surface at one end of the adjusting slide slot, and a receiving groove is provided on the side wall of the adjusting slide slot, the pushing block is slidably arranged in the receiving groove, one end of the pushing block extends out of the receiving groove and extends into the adjusting slide slot, and one end of the pushing block located in the adjusting slide slot is provided with an extrusion inclined surface corresponding to the abutting inclined surface, the extrusion inclined surface is tightly pressed against the abutting inclined surface, the pushing screw is threadedly connected to the lower mounting plate, one end of the pushing screw extends into the receiving groove and is rotatably connected to the push block, one end of the return spring is connected to the lower clamping block, and the other end is connected to the inner bottom wall of the adjusting slide slot.

[0016] By adopting the above technical solution, the push screw is rotated, the push block slides in the receiving groove under the driving of the push screw and the limiting guiding action of the receiving groove, and the lower clamping block slides in the adjusting slide groove under the driving of the push block, thereby realizing the position adjustment of the lower clamping block. The setting of the reset spring enables the lower clamping block to always be tightly pressed against the push block.

[0017] Optionally, one end of the rotating rod is connected to a pressing handle, and a rotating limit rod for fixing the pressing handle is provided on the upper mounting plate, the rotating limit rod includes a vertical portion and a horizontal portion arranged at the top of the vertical portion, the bottom end of the vertical portion is rotatably connected to the upper mounting plate, and the rotating limit rod is arranged corresponding to the pressing handle.

[0018] By adopting the above technical solution, the pressing handle is rotated downward until the pressing handle contacts the top surface of the upper mounting plate, the rotation limit rod is rotated, and the horizontal part of the rotation limit rod limits the pressing handle, thereby reducing the possibility of the pressing handle rotating.

[0019] Optionally, the lower clamping block is provided with adjustment scale lines along a direction perpendicular to the lower mounting plate.

[0020] By adopting the above technical solution, the setting of the adjustment scale line facilitates accurate adjustment of the position of the lower clamping block in the adjustment slide groove.

[0021] Optionally, both the upper clamping block and the lower clamping block are provided with anti-skid pads, and the anti-skid pads are arranged on one side of the upper clamping block and the lower clamping block where the clamping groove is opened.

[0022] By adopting the above technical solution, the provision of the anti-slip pad increases the friction between the upper clamping block and the lower clamping block and the piston rod, thereby improving the stability of the clamping process.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the cooperation of the lower mounting plate, the upper mounting plate, the guide rod and the clamping assembly, the application scope of the clamp is expanded and the clamping efficiency of the clamp is improved;

[0025] 2. The horizontal part of the rotation limit rod limits the pressing handle, reducing the possibility of the pressing handle rotating;

[0026] 3. The setting of the anti-slip pad increases the friction between the upper clamping block, the lower clamping block and the piston rod, and improves the stability of the clamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a clamp used for piston rod processing according to Example 1 of the present application.

[0028] Figure 2 It is a partial cross-sectional view used to reflect the internal structure of the adjustment slide groove in Example 1 of the present application.

[0029] Figure 3 yes Figure 1 Enlarged view of part A in the middle.

[0030] Figure 4 It is a schematic diagram of the structure of a fixture used for piston rod processing in Example 2 of the present application.

[0031] Figure 5 It is a structural schematic diagram used to reflect the adjusting component in Example 2 of the present application.

[0032] Explanation of the accompanying drawings: 1. Upper mounting plate; 2. Lower mounting plate; 21. Adjusting slide groove; 22. Sliding hole; 23. Accommodating groove; 3. Clamping assembly; 31. Upper clamping block; 32. Lower clamping block; 33. Anti-skid pad; 34. Clamping groove; 35. Push block; 36. Adjusting screw; 37. Sliding rod; 38. Pushing screw; 39. Reset spring; 4. Pressing assembly; 41. Rotating rod; 42. Extruding eccentric wheel; 43. Pressing handle; 5. Guide rod; 6. Adjusting scale line; 7. Anti-skid pattern; 8. Connecting top plate; 9. Balance spring; 10. Rotating limit rod. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 The present application is further described in detail. The embodiment of the present application provides a clamp for piston rod processing, which has the effect of expanding the application scope of the clamp and improving the clamping efficiency of the clamp.

[0034] Example 1

[0035] Reference Figure 1-3 A clamp for piston rod processing includes an upper mounting plate 1, a lower mounting plate 2, a clamping assembly 3 and a pressing assembly 4. The upper mounting plate 1 is arranged parallel to the lower mounting plate 2, and a plurality of guide rods 5 are vertically fixedly connected to the top surface of the lower mounting plate 2. The plurality of guide rods 5 pass through the upper mounting plate 1 and slide with it.

[0036] Reference Figure 1 The clamping assembly 3 includes an upper clamping block 31, a lower clamping block 32, an anti-skid pad 33 and an adjusting member. A plurality of upper clamping blocks 31 are fixedly connected to the bottom surface of the upper mounting plate 1 along the length direction, and a plurality of lower clamping blocks 32 are arranged on the lower mounting plate 2 along the length direction thereof, and a plurality of upper clamping blocks 31 are arranged in a one-to-one correspondence with a plurality of lower clamping blocks 32. A clamping groove 34 is provided on the side where the upper clamping block 31 and the lower clamping block 32 are close to each other, and an anti-skid pad 33 is connected to the side where the clamping groove 34 is provided on the upper clamping block 31 and the lower clamping block 32, and the anti-skid pad 33 is made of elastic material.

[0037] Reference Figure 2 , a plurality of adjustment slots 21 are provided on the top surface of the lower mounting plate 2, and the plurality of adjustment slots 21 are arranged one-to-one with the plurality of lower clamping blocks 32, and the bottom end of the lower clamping block 32 is slidably arranged in the adjustment slots 21. An adjustment scale line 6 is arranged on the vertical side wall of the lower clamping block 32 along the vertical direction. The adjustment member includes an adjustment screw 36 and a sliding rod 37, and the adjustment screw 36 is threadedly connected to the bottom surface of the lower mounting plate 2, and one end of the adjustment screw 36 extends into the adjustment slot 21 and is rotatably connected to the bottom surface of the lower clamping block 32. The sliding rod 37 is fixedly connected to the bottom surface of the lower clamping block 32 and is arranged parallel to the adjustment screw 36. A sliding hole 22 corresponding to the sliding rod 37 is provided on the inner bottom wall of the adjustment slot 21, and the sliding rod 37 is slidably connected in the sliding hole 22.

[0038] Reference Figure 1The top end of the guide rod 5 passes through one end of the upper mounting plate 1 and is fixedly connected to a connecting top plate 8. One connecting top plate 8 is provided at each end of the length direction above the upper mounting plate 1, and the two connecting top plates 8 are arranged in parallel. The pressing assembly 4 includes a rotating rod 41, an extrusion eccentric wheel 42 and a pressing handle 43. The rotating rod 41 is rotatably connected between the two connecting top plates 8 and is arranged along the length direction of the upper mounting plate 1. A plurality of extrusion eccentric wheels 42 are fixedly sleeved on the rotating rod 41 at equal intervals along the length direction thereof, and anti-slip grooves 7 are arranged on the circumference of the extrusion eccentric wheel 42. A balancing spring 9 is sleeved on the guide rod 5, one end of the balancing spring 9 is in contact with the top surface of the lower mounting plate 2, and the other end is in contact with the bottom surface of the upper mounting plate 1. Under the action of the balancing spring 9, the top surface of the upper mounting plate 1 is in contact with the peripheral wall of the extrusion eccentric wheel 42.

[0039] Reference Figure 1 and Figure 3 The pressing handle 43 is fixedly connected to one end of the rotating rod 41. When the pressing handle 43 is rotated to contact the top surface of the upper mounting plate 1, the squeezing eccentric wheel 42 presses the upper mounting plate 1 downward. The top surface of the upper mounting plate 1 is provided with a rotation limiting rod 10, and the rotation limiting rod 10 includes a vertical portion and a horizontal portion provided at the top of the vertical portion. The bottom end of the vertical portion is rotatably connected to the top surface of the upper mounting plate 1, and the rotation limiting rod 10 is provided corresponding to the pressing handle 43.

[0040] Reference Figure 1-3 Before positioning and clamping the piston rod, the adjusting screw 36 is rotated, and the lower clamping block 32 slides in the vertical direction under the driving of the adjusting screw 36 and the limiting guiding action of the adjusting slide groove 21. The position of the lower clamping block 32 is precisely adjusted according to the adjustment scale line 6. During the adjustment of the lower clamping block 32, the sliding rod 37 slides in the sliding hole 22, which improves the stability of the lower clamping block 32 during the adjustment process. Several upper clamping blocks 31 and corresponding several lower clamping blocks 32 realize multi-station clamping of the piston rod, which helps to improve the clamping efficiency of the device.

[0041] Reference Figure 1-3, place the corresponding piston rod in the clamping groove 34 of the lower clamping block 32, turn the pressing handle 43 downward until the pressing handle 43 contacts the top surface of the upper mounting plate 1, and the rotating rod 41 and the extrusion eccentric wheel 42 rotate accordingly and press the upper mounting plate 1 downward, and the balance spring 9 shortens to accumulate elastic potential energy. The upper clamping block 31 descends with the upper mounting plate 1 and clamps the piston rod. The provision of the anti-skid pad 33, on the one hand, increases the friction between the upper clamping block 31 and the lower clamping block 32 and the piston rod, and improves the stability of the clamping process. On the other hand, the anti-skid pad 33 made of elastic material reduces the possibility of damage to the piston rod during the clamping process. Twist and rotate the limit rod 10, and the horizontal part of the limit rod 10 limits the pressing handle 43, reducing the possibility of the pressing handle 43 rotating during the clamping process. The provision of the anti-skid pattern 7 reduces the possibility of the extrusion eccentric wheel 42 rotating during the clamping process. The setting of the adjusting member realizes the position adjustment of the lower clamping block 32 on the lower mounting plate 2, so that the clamp can clamp piston rods of different diameters at a time.

[0042] Reference Figure 1-3 After the processing of the piston rod is completed, the limit rod 10 is rotated in the opposite direction to release the limit of the pressing handle 43, and the pressing handle 43 is rotated in the opposite direction. The upper mounting plate 1 moves up along the guide rod 5 under the action of the balance spring 9, and the upper clamping block 31 is separated from the piston rod, and the locking of the piston rod is released. The setting of the balance spring 9 realizes the automatic reset of the upper mounting plate 1, and also ensures the synchronization of the movement process of various parts of the upper mounting plate 1.

[0043] The implementation principle of a clamp for piston rod processing in the embodiment of the present application is as follows: before positioning and clamping the piston rod, the position of the lower clamp block 32 in the lower mounting plate 2 is adjusted using an adjusting member. A plurality of upper clamp blocks 31 and a corresponding plurality of lower clamp blocks 32 realize multi-station clamping of the piston rod, which helps to improve the clamping efficiency of the device.

[0044] Place the corresponding piston rod in the clamping groove 34 of the lower clamping block 32, turn the pressing handle 43 downward until the pressing handle 43 contacts the top surface of the upper mounting plate 1, and squeeze the eccentric wheel 42 to press the upper mounting plate 1 downward. The upper clamping block 31 descends with the upper mounting plate 1 and clamps the piston rod. The provision of the anti-slip pad 33 improves the friction between the upper clamping block 31 and the lower clamping block 32 and the piston rod, and improves the stability of the clamping process. The provision of the adjusting member realizes the position adjustment of the lower clamping block 32 on the lower mounting plate 2, so that the clamp can clamp piston rods of different diameters at a time.

[0045] Example 2

[0046] Reference Figure 4 and Figure 5, the difference between Example 2 and Example 1 is that the adjusting member includes a push block 35, a push screw 38 and a reset spring 39. An end of the lower clamping block 32 located in the lower mounting plate 2 is provided with an abutting inclined surface, and an abutting inclined surface is provided on both opposite sides of the lower clamping block 32. A push screw 38 is threadedly connected to the vertical side walls on both sides of the width direction of the lower mounting plate 2, and an accommodating groove 23 is provided on the two opposite vertical side walls of the adjusting slide 21, and a push block 35 is slidably provided in the two accommodating grooves 23. One end of the push block 35 extends into the adjusting slide 21, and one end of the push block 35 located in the adjusting slide 21 is provided with an extrusion inclined surface corresponding to the shape of the abutting inclined surface. The two push blocks 35 are arranged in a one-to-one correspondence with the two push screws 38, and one end of the push screw 38 extends into the accommodating groove 23 and is rotatably connected to the push block 35.

[0047] Reference Figure 4 and Figure 5 The return spring 39 is disposed in the adjustment slot 21, one end of the return spring 39 is fixedly connected to the bottom surface of the lower clamping block 32, and the other end of the return spring 39 is fixedly connected to the bottom surface of the adjustment slot 21. In the natural state, the abutting inclined surface is tightly pressed against the push block 35 under the action of the return spring 39.

[0048] The implementation principle of a clamp for piston rod processing in the embodiment of the present application is as follows: when adjusting the position of the lower clamp block 32, the two push screws 38 are rotated, and the push block 35 slides along the length direction of the receiving groove 23 under the driving of the push screws 38 and the limiting and guiding action of the receiving groove 23, and the lower clamp block 32 slides in the adjustment slide groove 21 under the driving of the push block 35, thereby realizing the position adjustment of the lower clamp block 32. The setting of the reset spring 39 enables the lower clamp block 32 to always be in tight contact with the push block 35.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fixture for piston rod processing, characterized in that: The invention comprises a lower mounting plate (2), an upper mounting plate (1), a guide rod (5) and a clamping assembly (3), wherein the upper mounting plate (1) is arranged in parallel with the lower mounting plate (2), the guide rod (5) is connected to the lower mounting plate (2), the upper mounting plate (1) is slidably connected to the guide rod (5), and the clamping assembly (3) comprises an upper clamping block (31) and a lower clamping block (32), wherein the upper clamping block (31) is arranged on a side of the upper mounting plate (1) close to the lower mounting plate (2), and the lower clamping block (32) is arranged on a side of the lower mounting plate (2) close to the guide rod (5). On one side of the upper mounting plate (1), a plurality of upper clamping blocks (31) and a plurality of lower clamping blocks (32) are provided, and the plurality of upper clamping blocks (31) and the plurality of lower clamping blocks (32) are arranged in a one-to-one correspondence, and a clamping groove (34) is provided on the side where the upper clamping block (31) and the lower clamping block (32) are close to each other, and an adjusting groove (21) is provided on the lower mounting plate (2), and the bottom end of the lower clamping block (32) is slidably arranged in the adjusting groove (21), and an adjusting member for adjusting the position of the lower clamping block (32) is provided on the lower mounting plate (2).

2. A clamp for piston rod processing according to claim 1, characterized in that: A plurality of guide rods (5) are arranged on the lower mounting plate (2). The guide rods (5) penetrate the upper mounting plate (1) and are slidably matched therewith. One end of the guide rod (5) away from the lower mounting plate (2) is connected to a connecting top plate (8). Two connecting top plates (8) are arranged. A pressing assembly (4) is arranged on the connecting top plate (8). The pressing assembly (4) comprises a rotating rod (41) and an extruding eccentric wheel (42). The rotating rod (41) is rotatably connected between the two connecting top plates (8). The rotating rod (41) is arranged parallel to the upper mounting plate (1). The extruding eccentric wheel (42) is sleeved on the rotating rod (41). An elastic member is arranged between the upper mounting plate (1) and the lower mounting plate (2). Under the action of the elastic member, the upper mounting plate (1) is pressed against the peripheral wall of the extruding eccentric wheel (42).

3. A fixture for piston rod processing according to claim 1, characterized in that: The adjusting member comprises an adjusting screw (36), wherein the adjusting screw (36) is threadedly connected to the lower mounting plate (2), and one end of the adjusting screw (36) extends into the adjusting slide groove (21) and is rotatably connected to the lower clamping block (32).

4. A clamp for piston rod processing according to claim 3, characterized in that: The lower clamping block (32) is connected to a sliding rod (37), and a sliding hole (22) corresponding to the sliding rod (37) is opened on the bottom wall of the adjusting slide groove (21). One end of the sliding rod (37) is slidably arranged in the sliding hole (22), and the sliding rod (37) is arranged parallel to the adjusting screw (36).

5. The clamp for piston rod processing according to claim 1, characterized in that: The adjusting member comprises a push block (35), a push screw (38) and a return spring (39); one end of the lower clamping block (32) located in the adjusting slide groove (21) is provided with an abutting inclined surface; a receiving groove (23) is connected and opened on the side wall of the adjusting slide groove (21); the push block (35) is slidably arranged in the receiving groove (23); one end of the push block (35) extends out of the receiving groove (23) and extends into the adjusting slide groove (21); the push block (35) One end of the adjusting slide groove (21) is provided with an extrusion slope corresponding to the abutting slope, and the extrusion slope is tightly pressed against the abutting slope. The pushing screw (38) is threadedly connected to the lower mounting plate (2), and one end of the pushing screw (38) extends into the accommodating groove (23) and is rotationally connected to the pushing block (35). One end of the return spring (39) is connected to the lower clamping block (32), and the other end is connected to the inner bottom wall of the adjusting slide groove (21).

6. A clamp for piston rod processing according to claim 2, characterized in that: One end of the rotating rod (41) is connected to a pressing handle (43), and a rotating limit rod (10) for fixing the pressing handle (43) is arranged on the upper mounting plate (1), and the rotating limit rod (10) comprises a vertical portion and a horizontal portion arranged at the top end of the vertical portion, and the bottom end of the vertical portion is rotatably connected to the upper mounting plate (1), and the rotating limit rod (10) is arranged corresponding to the pressing handle (43).

7. The clamp for piston rod processing according to claim 1, characterized in that: The lower clamping block (32) is provided with an adjustment scale line (6) along a direction perpendicular to the lower mounting plate (2).

8. The clamp for piston rod processing according to claim 1, characterized in that: The upper clamping block (31) and the lower clamping block (32) are both provided with anti-skid pads (33), and the anti-skid pads (33) are arranged on one side of the upper clamping block (31) and the lower clamping block (32) where the clamping groove (34) is opened.

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