Oil cylinder rod head clamping jaw tool

Abstract

The utility model discloses an oil cylinder rod head clamping jaw tool which comprises two clamping jaws symmetrically arranged on a rotary table, the two clamping jaws are synchronously close to or away from the center of the rotary table, a positioning rod is arranged between the opposite vertical faces of the two clamping jaws in a clamped mode, and a rod head structure to be machined is sleeved on the positioning rod. The vertical faces of the two clamping jaws are attached to the two end opening faces of the hinge hole correspondingly, and the two ends of the rod head structure are clamped under the action of a machine tool hydraulic system. The limiting lock catch plate set is provided with a fastening assembly, and the fastening assembly is used for fastening the limiting lock catch plate set and used for abutting against the two side faces of the rod head structure, so that the axis of the cylindrical face of the to-be-machined end of the rod head structure is concentric with the rotary table. On the premise that clamping precision and stability are guaranteed, simple, convenient and rapid clamping is achieved, and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling, in particular to a tooling for a cylinder rod head clamping claw. Background Art

[0002] The reciprocating mechanism driven by a large hydraulic cylinder often hinges the piston rod to the reciprocating mechanism through a rod head structure. In the processing technology, the rod head structure is separately processed and then welded to the end of the piston rod to form a whole. In order to ensure the stability of the overall mechanism movement after welding, the hinge hole of the rod head structure and the cylindrical end welded to the piston rod have certain position and symmetry requirements. The common process is to first machine the hinge hole, and then clamp it to the cylindrical end turned and welded on a vertical lathe. It is difficult to achieve precise positioning quickly using commonly used ordinary jaws for clamping. Therefore, clamping and debugging are difficult and time-consuming, affecting efficiency. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a cylinder rod head clamping claw tooling, which can achieve simple and fast clamping and improve processing efficiency while ensuring clamping accuracy and stability.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a cylinder rod head clamping tool, comprising two clamping jaws symmetrically arranged on a turntable, the two clamping jaws synchronously approach or move away from the center of the turntable, a positioning rod is clamped between the opposite vertical surfaces of the two clamping jaws, the positioning rod is mounted with a rod head structure to be processed, the vertical surfaces of the two clamping jaws are respectively fitted with the two end surfaces of the hinge hole, and the two ends of the rod head structure are clamped under the action of the machine tool hydraulic system; the limit locking plate group is provided with a tightening component, the tightening component is used to tighten the limit locking plate group, and to tighten the two side surfaces of the rod head structure, so that the axis of the cylindrical surface of the end to be processed is concentric with the turntable.

[0005] Furthermore, the limiting locking plate group includes a limiting plate and a locking plate, and the limiting plate and the locking plate are symmetrically arranged on both sides of the claw, and the same end of the limiting plate and the locking plate is hinged to one of the claws; the movable mating end of the limiting plate is provided with a closed arc-shaped waist-shaped hole, and the closed arc-shaped waist-shaped hole is slidingly matched with the fixing screw on the side of the other claw; the swinging end of the locking plate is provided with an open arc-shaped waist-shaped hole, and the open arc-shaped waist-shaped hole is snap-fitted with the fixing screw on the side of the other claw.

[0006] Furthermore, the fastening assembly includes a positioning screw and a fastening screw that are relatively arranged. The positioning screw is threadedly connected to the threaded hole in the middle of the limiting plate, and the fastening screw is threadedly connected to the threaded hole in the middle of the locking plate. When the claws are clamped, the positioning screw and the fastening screw are both aligned with the axis of the cylindrical surface of the end to be processed of the rod head structure.

[0007] Furthermore, an elastic member is provided between the end cap of the positioning screw and the limiting plate; and an elastic member is provided between the end cap of the fastening screw and the locking plate.

[0008] Furthermore, the positioning rod is provided with a central axis, and the central axis and the support plates near the two ends thereof are an integral structure, and the outer circumferential surface of the support plate is adapted to fit with the inner wall of the hinge hole.

[0009] Furthermore, a U-shaped groove cooperating with the end of the central axis is provided on the vertical surface of the clamping claw, lateral positioning strips are fixedly provided on the inner walls on both sides of the U-shaped groove, a positioning pad is provided at the bottom of the U-shaped groove, and the outer circular surface of the end of the central axis is in close contact with the lateral positioning strip and the positioning pad.

[0010] Beneficial effect: The utility model provides a cylinder rod head claw tooling, which realizes the rapid positioning and installation of the rod head structure through the cooperation of the positioning rod and the two seats, and realizes the locking and fixation of the rod head structure through the cooperation of the limit locking plate group and the tightening component, ensuring that the rod head structure is accurately positioned relative to the turntable and is firmly clamped, has a simple structure, is easy to operate, and greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a front view structural schematic diagram of an embodiment of the utility model;

[0012] Attached Figure 2 This is a schematic diagram of a top view of an embodiment of the utility model;

[0013] Attached Figure 3 For attachment Figure 1 Schematic diagram of the cross-sectional structure at point A. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] As attached Figure 1-3The described oil cylinder rod head clamping tool comprises two clamping jaws 2 symmetrically arranged on a turntable 1, the two clamping jaws 2 synchronously approach or move away from the center of the turntable 1 to achieve automatic centering, a positioning rod 3 is clamped between the opposite vertical surfaces of the two clamping jaws 2, and the positioning rod 3 is provided with a rod head structure 4 to be processed, the vertical surfaces of the two clamping jaws 2 are respectively fitted with the two end surfaces of the hinge hole, and the two ends of the rod head structure 4 are clamped under the action of the machine tool hydraulic system; the limiting locking plate group 5 is provided with a tightening component 6, and the tightening component 6 is used to tighten the limiting locking plate group 5, and to tighten the two side surfaces of the rod head structure 4 so that the axis of the cylindrical surface of the end to be processed is concentric with the turntable 1.

[0016] In this solution, the rod head structure is mounted relative to the positioning rod, and the positioning rod equipped with a joint is placed between the two claws. The positioning rod is supported and limited by the limiting structure on the vertical surface of the claw, thereby determining the relative position of the rod head structure and the turntable. The two claws laterally clamp the rod head structure to limit its axial position relative to the positioning rod, and then the clamping effect produced by the cooperation of the limiting locking plate group and the tightening component fixes the radial position of the rod head structure relative to the turntable, so that the rod head structure is firmly clamped by the two claws, which ensures both the clamping accuracy and the clamping stability. The whole process is simple and quick to operate, does not require much debugging, and effectively improves the processing efficiency.

[0017] The limiting lock plate group 5 includes a limiting plate 51 and a lock plate 52, and the limiting plate 51 and the lock plate 52 are symmetrically arranged on both sides of the claw 2, and the same end of the limiting plate 51 and the lock plate 52 is hinged to one of the claws 2; the movable mating end of the limiting plate 51 is provided with a closed arc-shaped waist-shaped hole 53, and the closed arc-shaped waist-shaped hole 53 is slidably matched with the fixing screw 21 on the side of the other claw 2; the swinging end of the lock plate 52 is provided with an open arc-shaped waist-shaped hole 50, and the open arc-shaped waist-shaped hole 50 is snap-fitted with the fixing screw 21 on the side of the other claw 2; the two fixing screws 21 are symmetrically arranged on the two sides of the same claw, and one of the fixing screws 21 passes through the closed arc-shaped waist-shaped hole 53 and is fixed on the side of the claw 2. One end of the limit plate is fixedly connected to the side of a claw, and during the process of clamping and loosening the claw, the fixing screw at the other end can slide relatively in the long axis direction of the closed arc waist hole; the locking plate can rotate around its hinged end, and the fixing screw can slide in or out of the opening of the open arc waist hole by rotating the locking plate. During the process of clamping and loosening the claw, the fixing screw can slide relatively in the long axis direction of the open arc waist hole. The rod head structure is assembled and unassembled when the claw is loosened.

[0018] The fastening assembly 6 includes a positioning screw 61 and a fastening screw 62 which are arranged relatively. The positioning screw 61 is threadedly connected to the threaded hole in the middle of the limiting plate 51, and the fastening screw 62 is threadedly connected to the threaded hole in the middle of the locking plate 52. When the jaws are clamped, the positioning screw 61 and the fastening screw 62 are both aligned with the axis of the cylindrical surface of the end to be processed of the rod head structure 4. The axial position of the positioning screw itself can be adjusted in advance. After the positioning rod of the rod head structure is placed between the two jaws, the outer cylindrical surface of the cylindrical end to be processed is supported by the positioning screw, and then the locking plate is buckled with the corresponding fixed screw. The clamping jaws and the fastening screw are also tightened against the outer cylindrical surface of the cylindrical end, and cooperate with the positioning screw to maintain their concentric position relationship, so as to achieve the function of fixing the relative position of the rod head structure in the tooling.

[0019] An elastic member 60 is provided between the end cap of the positioning screw 61 and the limiting plate 51; an elastic member 60 is provided between the end cap of the fastening screw 62 and the locking plate 52. By adding the elastic member, a shock-absorbing effect can be achieved, reducing the influence of vibration on the screw position during processing, preventing the positioning screw and the fastening screw from loosening due to vibration, thereby preventing the axis of the cylindrical end to be processed from deviating during processing, and further ensuring the stability and accuracy of the clamping.

[0020] The positioning rod 3 is provided with a central axis 31, and the central axis 31 and the support plates 32 near the two ends thereof are an integral structure, and the outer circumferential surface of the support plate 32 is adapted to fit the inner wall of the hinge hole. The positioning rods with support plates of different sizes can meet the positioning and installation requirements of the rod head structures of hinge holes of different sizes.

[0021] A U-shaped groove 22 is provided on the vertical surface of the clamping claw 2, which cooperates with the end of the central axis 31. Lateral positioning strips 23 are fixedly provided on the inner walls on both sides of the U-shaped groove 22. A positioning pad 24 is provided at the bottom of the U-shaped groove 22. The outer circular surface of the end of the central axis 31 is in close contact with the lateral positioning strip 23 and the positioning pad 24.

[0022] The U-shaped groove can limit the position of the center axis. In order to avoid the influence of wear on the limiting accuracy, the center axis is contacted through the positioning strip and the positioning pad. Only the surface treatment of the positioning strip and the positioning pad is required to enhance the wear resistance. They can also be replaced as consumables to reduce costs.

[0023] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A tooling for a cylinder rod head claw, characterized in that: The invention comprises two clamping claws (2) symmetrically arranged on a turntable (1), the two clamping claws (2) synchronously approach or move away from the center of the turntable (1), a positioning rod (3) is clamped between the opposite vertical surfaces of the two clamping claws (2), a rod head structure (4) to be processed is mounted on the positioning rod (3), the vertical surfaces of the two clamping claws (2) are respectively fitted with the two end surfaces of the hinge hole, and the two ends of the rod head structure (4) are clamped under the action of the machine tool hydraulic system; the limit locking plate group (5) is provided with a tightening component (6), and the tightening component (6) is used to tighten the limit locking plate group (5) and to tighten the two side surfaces of the rod head structure (4) so ​​that the axis of the cylindrical surface of the end to be processed is concentric with the turntable (1).

2. The oil cylinder rod head clamping claw tooling according to claim 1, characterized in that: The limit locking plate group (5) comprises a limit plate (51) and a locking plate (52), wherein the limit plate (51) and the locking plate (52) are symmetrically arranged on both sides of the clamping claw (2), and the same end of the limit plate (51) and the locking plate (52) are hinged to one of the clamping claws (2); the movable mating end of the limit plate (51) is provided with a closed arc-shaped waist-shaped hole (53), and the closed arc-shaped waist-shaped hole (53) is slidably matched with the fixing screw (21) on the side of the other clamping claw (2); the swinging end of the locking plate (52) is provided with an open arc-shaped waist-shaped hole (50), and the open arc-shaped waist-shaped hole (50) is snap-fitted with the fixing screw (21) on the side of the other clamping claw (2).

3. The oil cylinder rod head clamping claw tooling according to claim 2, characterized in that: The fixing assembly (6) comprises a positioning screw (61) and a fastening screw (62) which are arranged opposite to each other. The positioning screw (61) is threadedly connected to the threaded hole in the middle of the limiting plate (51), and the fastening screw (62) is threadedly connected to the threaded hole in the middle of the locking plate (52). When the claw (2) is clamped, the positioning screw (61) and the fastening screw (62) are both aligned with the axis of the cylindrical surface of the end to be processed of the rod head structure (4).

4. The oil cylinder rod head clamping claw tooling according to claim 3, characterized in that: An elastic member (60) is provided between the end cap of the positioning screw (61) and the limiting plate (51); and an elastic member (60) is provided between the end cap of the fastening screw (62) and the locking plate (52).

5. The oil cylinder rod head clamping claw tooling according to claim 4, characterized in that: The positioning rod (3) is provided with a central axis (31), and the central axis (31) and the support plates (32) near the two ends thereof are an integral structure, and the outer circumferential surface of the support plate (32) is adapted to fit the inner wall of the hinge hole.

6. The oil cylinder rod head clamping claw tooling according to claim 5, characterized in that: A U-shaped groove (22) is arranged on the vertical surface of the clamping claw (2) and is matched with the end of the central axis (31). Lateral positioning strips (23) are fixedly arranged on the inner walls on both sides of the U-shaped groove (22). A positioning pad (24) is arranged at the bottom of the U-shaped groove (22). The outer circular surface of the end of the central axis (31) is closely matched with the lateral positioning strip (23) and the positioning pad (24).

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