Workpiece punching and clamping device

Abstract

The utility model relates to a workpiece punching and clamping device which comprises a frame body, a mounting seat which is arranged on the frame body and can rotate to adjust the angle, and a clamping mechanism which is fixed on the mounting seat and can synchronously rotate along with the mounting seat, and a mounting seat fixing mechanism is arranged between the mounting seat and the frame body. The mounting base is provided with a workpiece containing space, the clamping mechanism comprises a clamping arm, a pressing rod arranged at the end of the clamping arm and a telescopic cylinder driving the pressing rod to rotate, and the rotating plane of the clamping arm is perpendicular to the bottom plane of the containing space. And the mounting seat can rotate relative to the frame body, and the inclination angle of the workpiece can be adjusted after rotation, so that the universality of the device is improved, and the machining requirements of workpieces with different sizes can be met.

Description

Technical Field

[0001] The utility model belongs to the field of machining, and particularly relates to a workpiece punching and clamping device. Background Art

[0002] When machining a workpiece, it may be necessary to perform inclined punching or internal thread machining on the workpiece. At this time, the machining plane of the workpiece is not perpendicular to the axis of the tool, but forms an inclined angle. There are two ways to machine such workpieces. One is to keep the workpiece horizontal or vertical and make the tool inclined. The second is to keep the tool horizontal or vertical and make the workpiece inclined. The inclined angles of the inclined holes on different workpieces are different, which requires the inclined angle of the workpiece or the tool to adapt to the change in the inclined angle of the inclined hole. Taking the cross shaft as an example, the cross shaft is a mechanical component that realizes variable-angle power transmission and is mainly used in positions where the transmission axis direction needs to be changed. It is a key component of the universal transmission device. The design of the cross shaft usually includes a central shaft, and there is a short shaft perpendicular to the central shaft at each end of the central shaft, forming a cross shape. These short shafts can be inserted into the holes of the shaft fork. When there is an angular displacement between the two transmission shafts, the shaft fork will rotate around its respective fixed axis, thereby realizing power transmission. To ensure that the bearings and rotating components are fully lubricated, reduce wear, and extend the service life, a lubrication channel is usually provided at the central shaft part of the cross shaft. Lubricating oil can pass through this channel to reach the inside of the cross shaft and flow through the bearing surface, effectively reducing friction and heat.

[0003] In different working scenarios, the cross shafts have various different sizes, and the sizes of the central shafts of the cross shafts also vary. There is enough space to machine the lubrication channel for the large-sized central shaft, but for the small-sized central shaft, due to the limited space, an inclined method needs to be used to machine the lubrication channel, and the inclined angles of the lubrication channels of cross shafts with different sizes are also different. Currently, there is no device that can complete the machining of holes with different inclined angles for workpieces of different sizes. Summary of the Invention

[0004] The purpose of the utility model is to provide a workpiece punching and clamping device, which can clamp workpieces of different sizes and can change the clamping angle according to the inclined angle of the hole on the workpiece, so as to complete the machining of holes with different inclined angles, improve the versatility of the device, and realize automatic clamping after the angle adjustment.

[0005] The specific technical solution of the present utility model is as follows: A workpiece punching and clamping device, which includes a frame body, a mounting seat arranged on the frame body and capable of rotating and adjusting the angle, and a clamping mechanism fixed on the mounting seat and capable of rotating synchronously with the mounting seat. A mounting seat fixing mechanism is arranged between the mounting seat and the frame body; the mounting seat has a workpiece accommodating space, the clamping mechanism includes a clamping arm, a pressing rod arranged at the end of the clamping arm, and a telescopic cylinder for driving the pressing rod to rotate. The rotation plane of the clamping arm is perpendicular to the bottom plane of the accommodating space.

[0006] The mounting seat is used to place the workpiece to be processed. The mounting seat is arranged on the frame body and can rotate relative to the frame body. After the mounting seat rotates, the inclination angle of the workpiece can be adjusted, so that the hole to be processed is horizontal or vertical. In this way, the processing tool can always be kept horizontal or vertical, improving the versatility of the device and being able to adapt to the processing needs of workpieces of different sizes; after the inclination angle of the mounting seat is adjusted, the mounting seat is fixed by the mounting seat fixing mechanism; the workpiece accommodating space is used to place the workpiece, which can determine the angle and position of the workpiece. The clamping mechanism cooperates with the mounting seat to fix the workpiece in the accommodating space. At the same time, the clamping mechanism rotates synchronously with the mounting seat. In this way, no matter how the inclination angle of the mounting seat is adjusted, the clamping of the clamping mechanism is always perpendicular to the clamping surface of the workpiece, ensuring stable clamping.

[0007] Preferably, the mounting seat is in a square shape, and a workpiece accommodating space is arranged on the front surface of the mounting seat. The accommodating space is in a concave cavity structure adapted to the shape of the workpiece. The accommodating space is machined on the surface of the mounting seat, and its shape is adapted to the shape of the workpiece. After the workpiece is placed, multiple degrees of freedom of the workpiece can be restricted, and at the same time, it is convenient for the workpiece to be placed and taken out.

[0008] For a cross shaft, the accommodating space is in a cross-shaped concave cavity structure adapted to the shape of the cross shaft, including a central concave cavity corresponding to the central part of the cross shaft and a cross concave cavity corresponding to the short shaft part of the cross shaft. A blocking convex is arranged between adjacent cross concave cavities. After the cross shaft is placed, the accommodating space restricts the rotation of the cross shaft and the movement of the cross shaft in its plane. When combined with the clamping mechanism, the cross shaft can be clamped.

[0009] Preferably, the frame body includes a bottom plate and two side plates vertically fixed on the bottom plate. The two side plates are separated from each other. The mounting seat is arranged between the two side plates and can rotate in the space between the two side plates. The mounting seat fixing mechanism is arranged on the side plates.

[0010] Preferably, round holes and arc grooves are arranged on the side plates. The arc grooves are above the round holes. The arc grooves are centered on the center of the round holes. The side surface of the mounting seat is hinged to the side plate at the round holes, and a locking screw is fixed on the side surface of the mounting seat. The locking screw penetrates into the arc groove and fixes the mounting seat. The centers of the round holes and the arc grooves are the same. The mounting seat rotates around the center, and the locking screw in the arc groove fixes the mounting seat.

[0011] Preferably, the mounting seat fixing mechanism includes a connecting block and a fixing screw threadedly connected to the connecting block; there are two connecting blocks, which are fixed to the outer side of the side plate. The two connecting blocks are located on both sides of the arc groove, and the end of the fixing screw abuts against the outer surface of the head of the locking screw. The fixing screw presses against the outer surface of the head of the locking screw to prevent the locking screw from sliding in the arc groove.

[0012] Preferably, the clamping mechanism includes a mounting arm. The mounting arm includes two parts, namely a first part fixed to the back of the mounting seat and a second part fixed to the first part. The clamping arm is hinged to the first part, one end of the telescopic cylinder is hinged to the second part, and the other end of the telescopic cylinder is hinged to the tail end of the clamping arm.

[0013] Preferably, the first part includes a first fold, a second fold and a third fold. The second fold is perpendicular to the first fold, and the third fold is parallel to the first fold. The end of the first fold is fixed to the back of the mounting seat, and the fixing position is biased towards one side of the mounting seat. The third fold has two branches, which are parallel and separated. The middle position of the clamping arm is located at this separated part and is hinged to the end of the third fold.

[0014] Preferably, the second part is parallel to the third fold of the first part. One end of the second part is fixed to the first part, and a hinge seat is provided at the other end. The position of the hinge seat is biased towards the outside of the mounting seat, and the end of the telescopic cylinder is hinged to the hinge seat.

[0015] Preferably, the pressure bar is perpendicular to the end of the clamping arm, and the distance between the end of the pressure bar and the surface of the mounting seat is greater than the thickness of the workpiece. The distance indicates the distance between the end of the pressure bar and the mounting seat after the clamping arm is lifted. Limiting this distance to be greater than the thickness of the workpiece facilitates the placement of the workpiece into the accommodating space and avoids interference.

[0016] The beneficial effects of the present utility model are as follows: The workpiece to be processed is placed through the mounting seat. The mounting seat can rotate relative to the frame body, and after rotation, the inclination angle of the workpiece can be adjusted, thereby improving the versatility of the device and enabling it to adapt to the processing requirements of workpieces of different sizes; the accommodating space for the workpiece is used to place the workpiece, so the accommodating space is adapted to the shape of the workpiece. Once the workpiece is placed in the accommodating space, the angle and position of the workpiece can be determined. The clamping mechanism cooperates with the mounting seat to fix the workpiece in the accommodating space. At the same time, the clamping mechanism rotates synchronously with the mounting seat. In this way, no matter how the inclination angle of the mounting seat is adjusted, the clamping of the clamping mechanism is always perpendicular to the clamping surface of the workpiece, ensuring stable clamping. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a left front angle of the present utility model;

[0018] Figure 2 is a schematic structural diagram of a left rear angle of the present utility model;

[0019] Figure 3 It is a schematic diagram of the right side structure of a mounting seat of the present utility model;

[0020] Figure 4 It is a schematic top view structure of the present utility model;

[0021] Figure 5 It is a side view of the present utility model;

[0022] In the figure: 1. Frame body, 2. Bottom plate, 3. Side plates, 4. Mounting seat, 5. Central concave cavity, 6. Cross concave cavity, 7. Clamping mechanism, 8. Pressure rod, 9. Clamping arm, 10. Third fold, 11. Second fold, 12. First fold, 13. First component, 14. Hinge seat, 15. Second component, 16. Folding plate, 17. Reinforcing plate, 18. Connecting block, 19. Fixed screw, 20. Arc groove, 21. Locking screw, 22. Round hole, 23. Telescopic cylinder, 24. Cross shaft. Specific embodiments

[0023] The following will further describe the present utility model through specific embodiments in conjunction with the drawings. Embodiment

[0024] As Figure 1 Figure 2 Figure 3 shown, a cross shaft punching and clamping device includes a frame body 1, a mounting seat 4 arranged on the frame body and capable of rotating and adjusting the angle, and a clamping mechanism 7 fixed on the mounting seat and capable of rotating synchronously with the mounting seat. A mounting seat fixing mechanism is arranged between the mounting seat and the frame body.

[0025] The frame body includes a bottom plate 2 and two side plates 3 vertically fixed on the bottom plate. The two side plates are separated from each other. The mounting seat is arranged between the two side plates and can rotate within the space between the two side plates. The mounting seat fixing mechanism is arranged on the side plates. Round holes 22 and arc grooves 20 are arranged on the side plates. The arc groove is above the round hole, and the arc groove is centered on the center of the round hole.

[0026] The mounting base is square-shaped, and jacks are provided on the side surface of the mounting base. The positions of the jacks are arranged vertically and correspond to the round hole and the arc groove respectively. A pin shaft is inserted into the round hole, and the end of the pin shaft is inserted into the corresponding jack of the mounting base. A locking screw 21 is inserted into the arc groove, and the end of the locking screw is screwed into the corresponding jack of the mounting base. A cross shaft accommodating space is provided on the front surface of the mounting base. The accommodating space is in the shape of a cross-shaped concave cavity adapted to the shape of the cross shaft, including a central concave cavity 5 corresponding to the central part of the cross shaft and a cross concave cavity 6 corresponding to the short shaft part of the cross shaft. Between adjacent cross concave cavities are blocking protrusions. The cross concave cavities are located at the diagonal positions of the square of the mounting base, and the four blocking protrusions are located at the four side positions of the square of the mounting base. Of course, the setting of the accommodating cavity should ensure that the drilling positions of the cross shaft are exposed without interference. The mounting base can rotate around the pin shaft in the round hole, and the locking screw slides in the arc groove during the rotation process.

[0027] The mounting base fixing mechanism is arranged on the outer surface of one of the side plates. The fixing mechanism includes a connecting block 18 and a fixing screw 19 threadedly connected to the connecting block. There are two connecting blocks, and the two connecting blocks are fixed to the outer side of the side plate. The two connecting blocks are on both sides of the arc groove. The fixing screw is parallel to the surface of the side plate. After adjusting the inclination angle of the mounting base, the end of the fixing screw abuts against the outer surface of the head of the locking screw, and the two fixing screws fix the position of the locking screw.

[0028] The clamping mechanism includes a mounting arm, a clamping arm 9 hinged to the mounting arm, a pressure rod 8 vertically arranged on the clamping arm, and a telescopic cylinder 23 for driving the pressure rod to rotate. The rotation plane of the clamping arm is perpendicular to the bottom plane of the accommodating space. The mounting arm includes two parts, namely a first component 13 fixed to the back surface of the mounting base and a second component 15 fixed to the first component. The clamping arm is hinged to the first component, one end of the telescopic cylinder is hinged to the second component, and the other end of the telescopic cylinder is hinged to the tail end of the clamping arm. The first component includes a first fold 12, a second fold 11, and a third fold 10. The second fold is perpendicular to the first fold, the third fold is parallel to the first fold, the end of the first fold is fixed to the back surface of the mounting base, and the fixed position is biased towards the side of the mounting base. The third fold has two branches, which are parallel and separated. The middle position of the clamping arm is located at this separated part and is hinged to the end of the third fold. The second component includes a 7-shaped folding plate 16 and a reinforcing plate 17 fixed at the bending part of the folding plate. The end of the folding plate is fixed to the surface of the second fold of the first component. A hinge seat 14 is arranged at the other end of the folding plate, and the position of the hinge seat is opposite to the bending direction of the end of the folding plate. The end of the telescopic cylinder is hinged to the hinge seat. Two long waist holes are arranged at the end position of the folding plate, and the two long waist holes are on both sides of the reinforcing plate. The folding plate is fixed to the second fold through the long waist holes and screws. Through the setting of the long waist holes, the position of the second component relative to the first component can change, thereby adjusting the installation position of the tail end of the telescopic cylinder, and further adjusting the rotation angle of the clamping arm. The pressure rod is perpendicular to the end of the clamping arm and faces the side of the mounting base. The distance between the end of the pressure rod and the surface of the mounting base is greater than the thickness of the cross shaft.

[0029] As Figure 4 shown, when the telescopic cylinder 23 is in the retracted state, the clamping arm tilts to drive the pressure rod away from the mounting base. Then, the cross shaft 24 is placed into the accommodating space. The telescopic cylinder extends, and the cylinder rod pushes the clamping arm to rotate around the end position of the third fold. The clamping arm drives the pressure rod to approach the cross shaft and presses the cross shaft tightly in the accommodating space.

[0030] As Figure 5 shown, it is a schematic diagram of adjusting the tilt angle of the mounting base. Rotate the two fixing screws 19 to separate the ends of the fixing screws from the outer surface of the head of the locking screw 21 in the arc groove 20 of the side plate. Adjust the tilt angle of the mounting base according to the tilt angle of the hole to be machined on the workpiece. The mounting base rotates around the pin shaft at the round hole, and the locking screw slides in the arc groove. After the mounting base is adjusted in place, tighten the locking screw to fix the mounting base. Then, rotate the fixing screw so that the ends of the two fixing screws abut against the outer surface of the head of the locking screw.

[0031] The above is only a preferred embodiment of the present invention and does not impose any limitation on the present invention. Any simple modification, change, and equivalent transformation made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A workpiece punching and clamping device, characterized in that: The invention comprises a frame body (1), a mounting seat (4) arranged on the frame body and capable of rotating and adjusting an angle, and a clamping mechanism (7) fixed on the mounting seat and capable of rotating synchronously with the mounting seat, wherein a mounting seat fixing mechanism is arranged between the mounting seat and the frame body; the mounting seat has a workpiece accommodating space, and the clamping mechanism comprises a clamping arm (9), a pressure rod (8) arranged at the end of the clamping arm, and a telescopic cylinder for driving the pressure rod to rotate, wherein the rotation plane of the clamping arm is perpendicular to the bottom plane of the accommodating space.

2. A workpiece punching and clamping device according to claim 1, characterized in that: The mounting seat is in a square shape, and a workpiece accommodating space is arranged on the front of the mounting seat. The accommodating space is in a concave cavity structure adapted to the shape of the workpiece.

3. A workpiece punching and clamping device according to claim 2, characterized in that: The accommodating space is in the form of a cross-shaped cavity structure adapted to the shape of the cross shaft, comprising a central cavity (5) corresponding to the central portion of the cross shaft, a cross cavity (6) corresponding to the short axis portion of the cross shaft, and stop convexities between adjacent cross cavities.

4. A workpiece punching and clamping device according to claim 1, characterized in that: The frame comprises a bottom plate (2) and two side plates (3) vertically fixed to the bottom plate, the two side plates are separated from each other, the mounting seat is arranged between the two side plates and can rotate in the space between the two side plates, and the mounting seat fixing mechanism is arranged on the side plates.

5. A workpiece punching and clamping device according to claim 4, characterized in that: The side plate is provided with a circular hole (22) and a circular arc groove (20), the circular arc groove is located above the circular hole, the circular arc groove has the center of the circular hole as the center, the side surface of the mounting seat is hinged to the side plate at the circular hole, the side surface of the mounting seat is fixed with a locking screw, the locking screw penetrates the circular arc groove and fixes the mounting seat.

6. A workpiece punching and clamping device according to claim 5, characterized in that: The mounting seat fixing mechanism comprises a connecting block (18) and a fixing screw (19) threadedly connected to the connecting block; the connecting blocks are two, the two connecting blocks are fixed to the outer sides of the side plates, the two connecting blocks are located on both sides of the arc groove, and the end of the fixing screw abuts against the outer surface of the head of the locking screw.

7. A workpiece punching and clamping device according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The clamping mechanism includes a mounting arm, which includes two parts, a first part fixed to the back of the mounting seat and a second part fixed to the first part. The clamping arm is hinged to the first part, one end of the telescopic cylinder is hinged to the second part, and the other end of the telescopic cylinder is hinged to the tail end of the clamping arm.

8. A workpiece punching and clamping device according to claim 7, characterized in that: The first component includes a first fold, a second fold and a third fold. The second fold is perpendicular to the first fold, and the third fold is parallel to the first fold. The end of the first fold is fixed to the back of the mounting seat, and the fixed position is biased to one side of the mounting seat. The third fold is divided into two branches, which are parallel and separated. The middle position of the clamping arm is located at the separated position and is hinged to the end of the third fold.

9. A workpiece punching and clamping device according to claim 8, characterized in that: The second component is parallel to the third fold of the first component. One end of the second component is fixed to the first component, and a hinge seat is arranged on the other end. The hinge seat is located toward the outside of the mounting seat, and the end of the telescopic cylinder is hinged on the hinge seat.

10. A workpiece punching and clamping device according to claim 1, 2 or 3, characterized in that: The pressure rod is perpendicular to the end of the clamping arm, and the distance between the end of the pressure rod and the surface of the mounting seat is greater than the thickness of the workpiece.

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