Movable cross shaft punching clamp

Abstract

The utility model relates to a movable cross shaft punching clamp which comprises a frame body, a mounting seat which is arranged on the frame body and can rotate to adjust the angle, 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 which is arranged between the mounting seat and the frame body. A plurality of movable supporting blocks used for supporting the cross shaft are arranged on the mounting seat, each supporting block is provided with a supporting surface, the plurality of supporting surfaces are divided into two groups, and the two groups of supporting surfaces are crossed; the clamping mechanism comprises a clamping arm, a pressing rod arranged at the end of the clamping arm and a telescopic air 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. According to the universal joint pin machining clamp, universal joint pins of different sizes can be clamped, the clamping angle can be changed according to the inclination angles of holes in the universal joint pins, so that machining of the holes of different inclination angles is completed, the universality of the clamp is improved, and automatic clamping can be achieved after angle adjustment.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing, in particular to a movable cross-shaft punching fixture. Background Art

[0002] The cross shaft is a mechanical component that realizes variable-angle power transmission. It is mainly used in positions where the direction of the transmission axis 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 with a short shaft perpendicular to the central shaft at each end of the central shaft to form 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 forks will rotate around their respective fixed axes to achieve power transmission. To ensure that the bearings and rotating parts are fully lubricated, reduce wear and extend service life, a lubrication channel is usually set in the central axis of the cross shaft. The lubricating oil can reach the inside of the cross shaft through this channel and flow through the bearing surface, effectively reducing friction and heat.

[0003] In different working occasions, the cross shafts have various sizes, and the size of the center shaft of the cross shaft also varies. For the large-sized center shaft, there is enough space to process the lubrication channel, but for the small-sized center shaft, due to the small space, it is necessary to use an inclined method to process the lubrication channel. The inclination angles of the lubrication channels of cross shafts of different sizes are also different. At present, there is no equipment that can complete the processing of holes with different inclination angles for workpieces of different sizes. Summary of the invention

[0004] The purpose of the utility model is to provide a movable cross-axis punching fixture, which can clamp cross-axis of different sizes and change the clamping angle according to the inclination angle of the hole on the cross-axis, so as to complete the processing of holes with different inclination angles, improve the versatility of the fixture, and realize automatic clamping after the angle is adjusted.

[0005] The specific technical scheme of the utility model is: a movable cross-axis punching fixture, including a frame, a mounting seat arranged on the frame and capable of rotating and adjusting an angle, a clamping mechanism fixed on the mounting seat and capable of rotating synchronously with the mounting seat, and a mounting seat fixing mechanism is arranged between the mounting seat and the frame; a plurality of movable support blocks for supporting the cross-axis are arranged on the mounting seat, each support block has a support surface, and the plurality of support surfaces are divided into two groups, and the two groups of support surfaces are cross-shaped; the clamping mechanism includes a clamping arm, a pressure rod arranged at the end of the clamping arm, and a telescopic cylinder for driving the pressure rod to rotate, and the rotation plane of the clamping arm is perpendicular to the bottom plane of the accommodating space.

[0006] A movable support block is arranged on the mounting seat, which means that the fixed position of the support block on the mounting seat can be adjusted. Once the position adjustment is determined, the support block will be fixed on the mounting seat. The support block is used to support the cross shaft, so that the movable support block can be adjusted in position according to the specifications of different cross shafts, thereby clamping cross shafts of different sizes; the mounting seat can rotate relative to the frame to adjust the inclination angle, and can change the clamping angle according to the inclination angle of the hole on the cross shaft, thereby completing the processing of holes with different inclination angles, improving the versatility of the fixture, and realizing automatic clamping after the angle adjustment; the clamping mechanism rotates synchronously with the mounting seat, so that no matter how the mounting seat adjusts the inclination angle, the clamping of the clamping mechanism is always the clamping surface perpendicular to the workpiece, thereby ensuring stable clamping.

[0007] Preferably, the mounting seat is in a square shape, and four slide grooves are arranged along the diagonal lines on the mounting seat, and the support block is inserted into the slide grooves and locked and fixed; the mounting seat is provided with connection holes connected to the frame body on both sides. The slide grooves are arranged along the diagonal lines, so that the support blocks can be arranged in the slide grooves and can be close to or separated from each other along the diagonal positions, thereby changing the support size of the support blocks.

[0008] Preferably, the slide groove is a long waist hole, and the four slide grooves are arranged at intervals of 90 degrees in sequence. A fixing groove is arranged on the back of the mounting seat, and the position of the fixing groove corresponds to the position of the slide groove, and the width of the fixing groove is greater than the width of the slide groove. The fixing groove on the back of the mounting seat is used to place a fixing block, so as to ensure that the back of the mounting seat is flat and convenient for fixing with the clamping mechanism.

[0009] Preferably, the support block includes a square movable column and a support portion integrated with the movable column, the movable column is inserted into the mounting seat, the support portion is outside the mounting seat, the support portion is L-shaped, and has a bent support surface, and the bending angle of the support surface is less than 90°.

[0010] Preferably, a fixing block is arranged on the back of the mounting seat, the supporting block has a through hole connecting the end surface of the movable column and the supporting surface, a screw hole is arranged on the fixing block, and the fixing block and the supporting block are locked and fixed by fixing screws.

[0011] Preferably, the frame includes a bottom plate and two side plates 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.

[0012] Preferably, a circular hole and an arc groove are provided on the side plate, the arc groove is located above the circular hole, the arc groove has the center of the circular hole as the center, the side of the mounting seat is hinged to the side plate at the circular hole, a locking screw is fixed on the side of the mounting seat, the locking screw penetrates the arc groove and fixes the mounting seat. The center of the circular hole and the arc groove is the same, the mounting seat rotates around the center, and the locking screw in the arc groove fixes the mounting seat.

[0013] Preferably, the mounting seat fixing mechanism includes a connecting block and a fixing screw threadedly connected to the connecting block; the connecting blocks are two, the two connecting blocks 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 supports the outer surface of the head of the locking screw to prevent the locking screw from sliding in the arc groove.

[0014] Preferably, the clamping mechanism includes a mounting arm, which includes two parts, a first part fixed to the back of the mounting base 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 rear end of the clamping arm.

[0015] Preferably, the first component includes a fixing portion fixed to the mounting seat and a hinged portion fixed vertically on the fixing portion, the fixing portion is L-shaped, the hinged portion is located on the side of the mounting seat, the end of the hinged portion extends beyond the front of the mounting seat, and the clamping arm is hinged at the end position of the hinged portion; 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.

[0016] The beneficial effects of the utility model are as follows: a movable support block is arranged on the mounting seat, indicating that the fixed position of the support block on the mounting seat can be adjusted. Once the position adjustment is determined, the support block will be fixed on the mounting seat. The support block is used to support the cross shaft, so that the movable support block can be adjusted in position according to the specifications of different cross shafts, thereby clamping cross shafts of different sizes; the mounting seat can rotate relative to the frame to adjust the inclination angle, and can change the clamping angle according to the inclination angle of the hole on the cross shaft, thereby completing the processing of holes with different inclination angles, improving the versatility of the fixture, and being able to achieve automatic clamping after the angle adjustment; the clamping mechanism rotates synchronously with the mounting seat, so that no matter how the mounting seat adjusts the inclination angle, the clamping of the clamping mechanism is always the clamping surface of the vertical workpiece, ensuring stable clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 This is a schematic diagram of the back side of a mounting base of the utility model;

[0020] Figure 4 This is a schematic diagram of the assembly of a support block of the utility model;

[0021] Figure 5 This is a schematic diagram of a support block structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the placement of a cross axis of the utility model;

[0023] In the figure: 1, frame, 2, bottom plate, 3, side plate, 4, mounting seat, 5, slide groove, 6, support block, 7, clamping mechanism, 8, pressure rod, 9, clamping arm, 10, hinged part, 11, fixed part, 12, extension plate, 13, telescopic cylinder, 14, hinged seat, 15, second component, 16, reinforcement plate, 17, connecting block, 18, fixing screw, 19, locking screw, 20, arc groove, 21, fixing groove, 22, supporting surface, 23, supporting part, 24, fixing block, 25, movable column, 26, through hole, 27, cross axis. DETAILED DESCRIPTION

[0024] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. Example

[0025] like Figure 1 Figure 2 As shown, a movable cross-axis punching fixture comprises a frame 1, a mounting seat 4 arranged on the frame and capable of rotating and adjusting an angle, a clamping mechanism 7 fixed on the mounting seat and capable of rotating synchronously with the mounting seat, and a mounting seat fixing mechanism is arranged between the mounting seat and the frame. Four movable support blocks 6 for supporting the cross-axis are arranged on the mounting seat, each support block has a support surface 22, and the multiple support surfaces are divided into two groups, and the two groups of support surfaces are cross-shaped.

[0026] The frame includes 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 plate. A circular hole and a circular arc groove 20 are arranged on the side plate, the circular arc groove is located above the circular hole, and the circular arc groove has the center of the circular hole as the center of the circle.

[0027] like Figure 3 Figure 4 Figure 5As shown, the mounting seat is in a square shape, and connecting holes connected to the frame are arranged on both sides of the mounting seat. Four slide grooves 5 are arranged along the diagonal distribution on the front of the mounting seat. The slide grooves are long waist holes, and the four slide grooves are arranged at intervals of 90° in sequence. A fixing groove 21 is arranged on the back of the mounting seat. The position of the fixing groove corresponds to the position of the slide groove, and the width of the fixing groove is greater than the width of the slide groove. The support block includes a square movable column 25 and a support portion 23 integrated with the movable column. The support portion is L-shaped, and the support surface is located on the surface of the curved part of the support portion, and the bending angle of the support surface is less than 90°. The movable column is inserted into the slide groove of the mounting seat, and the fixed block is located in the fixed groove on the back of the mounting seat. The support block has a through hole connecting the end face of the movable column and the support surface. The fixed block is provided with a screw hole, and the fixed block and the support block are locked and fixed by fixing screws. There are two connecting holes on the side of the mounting seat, and the two connecting holes correspond to the circular hole and the arc groove respectively. A pin is inserted into the circular hole, and the end of the pin is inserted into the corresponding connecting hole of the mounting seat. A locking screw 19 is inserted into the circular arc groove, and the end of the locking screw is screwed into the corresponding connecting hole of the mounting seat. The mounting seat can rotate around the pin in the circular hole, and the locking screw slides in the circular arc groove during the rotation process.

[0028] The mounting seat fixing mechanism is arranged on the outer surface of one of the side panels, and the fixing mechanism comprises a connecting block 17 and a fixing screw 18 threadedly connected to the connecting block. There are two connecting blocks, which are fixed to the outer side of the side panel, and the two connecting blocks are located on both sides of the arc groove. The fixing screw is parallel to the surface of the side panel, and the inclination angle of the mounting seat is adjusted so that 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.

[0029] The clamping mechanism includes a mounting arm, a clamping arm 9 hinged on the mounting arm, a pressure rod 8 vertically arranged on the clamping arm, and a telescopic cylinder 13 driving the pressure rod to rotate, and the rotation plane of the clamping arm is vertical to the bottom plane of the accommodating space. The mounting arm includes two parts, namely a first part fixed to the back of the mounting seat and a second part 15 fixed to the first part, the clamping arm is hinged on the first part, one end of the telescopic cylinder is hinged on the second part, and the other end of the telescopic cylinder is hinged to the tail end of the clamping arm.

[0030] The first component includes a fixing portion 11 fixed to the mounting seat and a hinge portion 10 fixed vertically on the fixing portion. The fixing portion is L-shaped, and the fixing position of the mounting seat is biased toward the side of the mounting seat. The hinge portion is located at the side of the mounting seat, and the end of the hinge portion exceeds the front of the mounting seat. The clamping arm is hinged at the end position of the hinge portion. The second component includes a 7-shaped extension plate 12 and a reinforcing plate 16 fixed at the bending position of the extension plate. The end of the extension plate is fixed to the surface of the first component. A hinge 4 is provided on the other end of the extension plate. The position of the hinge seat is opposite to the bending direction of the end of the extension plate. The end of the telescopic cylinder is hinged on the hinge seat. Two long waist holes are provided at the end position of the extension plate. The two long waist holes are located on both sides of the reinforcing plate. The extension plate is fixed to the first component 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 be changed, thereby adjusting the tail end installation position of the telescopic cylinder 13, and then adjusting the rotation angle of the clamping arm. The pressure rod is perpendicular to the end of the clamping arm and faces one side of the mounting seat, and the distance between the end of the pressure rod and the surface of the mounting seat is greater than the thickness of the cross shaft.

[0031] like Figure 6 As shown, the four support blocks are adjusted and fixed according to the size specifications of the cross shaft 27 to be processed, and then the two fixing screws 18 are rotated according to the inclination angle of the processing hole on the cross shaft, so that the ends of the fixing screws are separated from the head surface of the locking screw in the arc groove of the side plate, and the mounting seat rotates around the pin at the circular hole, and the locking screw slides in the arc groove. After the mounting seat is adjusted to the right position, the locking screw is tightened to fix the mounting seat, and then the fixing screw is rotated so that the ends of the two fixing screws are against the head surface of the locking screw. The cross shaft is placed on the support surface, the telescopic cylinder is extended, and the cylinder rod pushes the clamping arm to rotate around the end position of the hinge part, and the clamping arm drives the pressure rod to approach the cross shaft and press the cross shaft onto the mounting seat.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A movable cross-shaft punching fixture, characterized in that: The invention comprises a frame (1), a mounting seat (4) arranged on the frame 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; a plurality of movable support blocks (6) for supporting a cross shaft are arranged on the mounting seat, each support block has a support surface (22), and the plurality of support surfaces are divided into two groups, and the two groups of support surfaces are cross-shaped; the clamping mechanism comprises a clamping arm (9), a pressure rod (8) arranged at the end of the clamping arm, and a telescopic cylinder (13) for driving the pressure rod to rotate, and the rotation plane of the clamping arm is perpendicular to the bottom plane of the accommodating space.

2. The movable cross-shaft punching fixture according to claim 1, characterized in that: The mounting seat is in a square shape, and four slide grooves (5) are arranged diagonally on the mounting seat, and the support block is inserted into the slide groove and locked and fixed; connection holes connected to the frame body are arranged on both sides of the mounting seat.

3. The movable cross-shaft punching fixture according to claim 2, characterized in that: The slide groove is a long waist hole, and the four slide grooves are arranged at intervals of 90 degrees in sequence. A fixing groove (21) is arranged on the back of the mounting seat, and the position of the fixing groove corresponds to the position of the slide groove, and the width of the fixing groove is greater than the width of the slide groove.

4. A movable cross-shaft punching fixture according to claim 1, 2 or 3, characterized in that: The support block comprises a square movable column (25) and a support portion (23) integral with the movable column, the movable column is inserted into the mounting seat, the support portion is outside the mounting seat, the support portion is L-shaped, and has a bent support surface, the bending angle of the support surface is less than 90°.

5. The movable cross-shaft punching fixture according to claim 4, characterized in that: A fixing block (24) is arranged on the back of the mounting seat. The supporting block has a through hole (26) communicating with the end surface of the movable column and the supporting surface. A screw hole is arranged on the fixing block. The fixing block and the supporting block are locked and fixed by fixing screws.

6. A movable cross-shaft punching fixture according to claim 1, 2 or 3, 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.

7. The movable cross-shaft punching fixture according to claim 6, characterized in that: The side plate is provided with a circular hole 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.

8. The movable cross-shaft punching fixture according to claim 7, characterized in that: The mounting seat fixing mechanism comprises a connecting block (17) and a fixing screw (18) 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.

9. A movable cross-shaft punching fixture according to claim 1, 2 or 3, characterized in that: The clamping mechanism includes a mounting arm, which 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.

10. The movable cross-shaft punching fixture according to claim 9, characterized in that: The first component includes a fixing portion fixed to the mounting seat and a hinged portion fixed vertically on the fixing portion, the fixing portion is L-shaped, the hinged portion is located on the side of the mounting seat, the end of the hinged portion extends beyond the front of the mounting seat, and the clamping arm is hinged at the end position of the hinged portion; 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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