Four-axis zero-point interchange clamp

Abstract

The four-axis zero-point interchange clamp is simple in structure, high in machining efficiency and convenient to clamp. Comprising a machine base, a driving device and a clamping device, the clamping device comprises a base, a clamping plate and a fastening bolt, the base is provided with two semi-arc bosses in four directions, the two semi-arc bosses are symmetrically distributed, and the semi-arc is further provided with a tool avoiding groove and a base threaded hole. The fastening bolt penetrates through the clamping plate and the base to fix a machined workpiece to the semi-circular-arc table, a fast-assembling shaft is arranged at the lower end of the base, and the fast-assembling shaft and a driving shaft of the driving device are fast disassembled and assembled. The utility model relates to the technical field of four-axis zero point interchange.

Description

Technical Field

[0001] The utility model relates to the technical field of four-axis zero-point interchange fixtures, and particularly relates to a four-axis zero-point interchange fixture. Background Technique

[0002] In ordinary mechanical processing clamping, generally only one plane can be processed in one clamping, which not only has low efficiency, but also cannot guarantee the processing accuracy.

[0003] The Chinese utility model with the publication number CN219074905U discloses a zero-point interchange fixture for a four-axis processing device. In this scheme, a four-axis machine tool and a reading mechanism are designed to achieve the zero-point interchange of accurate angles, which improves the accuracy of workpiece flipping when the zero-point interchange fixture is used. However, there is still great room for improvement in the clamping convenience and processing efficiency.

[0004] Therefore, it is very necessary to develop a four-axis zero-point interchange fixture with a simple structure, high processing efficiency and convenient clamping. Content of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model proposes a four-axis zero-point interchange fixture with a simple structure, high processing efficiency and convenient clamping.

[0006] To achieve the above object, a four-axis zero-point interchange fixture is proposed, which includes a machine base, a driving device and a clamping device. The clamping device includes a base, a clamping plate and a fastening bolt. Two semi-circular convex platforms are arranged in four directions of the base, and the two semi-circular convex platforms are symmetrically distributed. A tool avoiding groove and a base threaded hole are also arranged on the semi-circular arc. The fastening bolt passes through the clamping plate and the base to fix the processed workpiece on the semi-circular convex platform. A quick-installation shaft is arranged at the lower end of the base, and the quick-installation shaft is quickly disassembled and assembled with the driving shaft of the driving device.

[0007] Based on the above, semi-circular convex platforms for clamping workpieces are arranged on four sides of the base. The workpiece is clamped by using the clamping plate and the fastening bolt, and the four-axis zero-point interchange can be realized in cooperation with the driving device, reducing the disassembly steps of clamping. At the same time, the quick-installation shaft can be quickly disassembled and assembled with the pneumatic chuck, improving the clamping efficiency and processing efficiency.

[0008] Further, two semi-circular arc grooves are arranged on the clamping plate, and the radian of the semi-circular arc groove completely fits the outer shape radian of the workpiece. A threaded hole matching the fastening bolt is also arranged in the middle of the clamping plate.

[0009] Based on the above, the clamping plate is provided with two semi-circular grooves that can perfectly fit the contour arc of the workpiece, enabling better clamping of the workpiece during clamping, making the workpiece more stable during processing, improving the stability of processing, and ensuring the processing accuracy at the same time.

[0010] Furthermore, the clamping device further includes an L-shaped auxiliary limiting plate. One side of the L-shaped auxiliary limiting plate is provided with an installation groove having the same width as the width of the semi-circular boss. When clamping and installing the workpiece to be processed, the installation groove cooperates with the semi-circular boss, and the L-shaped auxiliary limiting plate provides auxiliary limiting for the workpiece to be processed and the clamping plate.

[0011] Based on the above, when clamping the workpiece, the L-shaped auxiliary limiting plate can limit the workpiece and the clamping plate, making the clamping more convenient and accurate, simplifying the clamping operation, and improving the clamping efficiency.

[0012] Furthermore, the driving device is provided with a four-axis turntable, and the four-axis turntable is driven by a pneumatic motor.

[0013] Based on the above, the four-axis turntable and the clamping device achieve four-axis zero-point interchange operation, improving the working efficiency.

[0014] Furthermore, the driving device is further provided with a pneumatic chuck. A connection hole is provided in the middle of the pneumatic chuck, connection blocks are provided on the surface of the pneumatic chuck, a connecting rod and a bayonet are provided on the quick-change shaft, the connecting rod is rotationally matched with the connection hole, and the bayonet is fitted and installed with the connection block.

[0015] Based on the above, the pneumatic chuck is connected in cooperation with the pneumatic motor. The pneumatic motor drives the pneumatic chuck to rotate, so that the clamping device realizes four-station replacement. The bayonet is connected in cooperation with the connection block, enhancing the connection stability between the quick-change shaft and the pneumatic chuck.

[0016] To more clearly elaborate the above features of the present invention and the purposes to be achieved, the following further illustrates the present invention in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0017] Figure 1 : is the exploded view of the present invention;

[0018] Figure 2 : is the exploded view of the clamping device;

[0019] Figure 3 : is the structural schematic diagram of the clamping device;

[0020] Figure 4 : is the structural schematic diagram of the quick-change shaft;

[0021] Figure 5 : Schematic structural diagram of a four-axis drive device;

[0022] Figure 6 : Schematic structural diagram of an L-shaped auxiliary limit plate;

[0023] Figure 7 : Schematic structural diagram of a clamping plate.

[0024] Explanation of the reference numerals in the drawings: 1 machine base; 2 drive device; 21 four-axis turntable; 211 pneumatic motor; 22 pneumatic chuck; 221 connection hole; 222 connection block; 3 clamping device; 31 base; 311 semi-circular convex platform; 312 tool clearance groove; 313 base threaded hole; 32 clamping plate; 321 semi-circular groove; 322 clamping plate threaded hole; 33 fastening bolt; 34 quick-installation shaft; 341 connecting rod; 342 bayonet; 4 L-shaped auxiliary limit plate; 41 installation groove; 5 workpiece; 51 hole to be machined. Specific implementation mode

[0025] As Figures 1 to 7 shown, a four-axis zero-point interchange fixture includes a machine base 1, a drive device 2 and a clamping device 3. The clamping device 3 includes a base, a clamping plate 32 and a fastening bolt 33. Two semi-circular convex platforms 311 are provided in four directions of the base, and the two semi-circular convex platforms 311 are symmetrically arranged. A tool clearance groove 312 and a base threaded hole 313 are further provided on the semi-circular arc. The fastening bolt 33 passes through the clamping plate 32 and the base threaded hole 313 to fix the workpiece 5 to be machined on the semi-circular platform.

[0026] The drive device 2 includes a four-axis turntable 21 and a pneumatic chuck 22. The four-axis turntable 21 is driven by a pneumatic motor 211. The pneumatic chuck 22 is connected and matched with the pneumatic motor 211. The pneumatic motor 211 drives the pneumatic chuck 22 to rotate, so that the clamping device 3 realizes four-station replacement. A connection hole 221 is provided in the middle of the pneumatic chuck 22, and a connection block 222 is provided on the surface of the pneumatic chuck 22. The base is connected with a quick-installation shaft 34. A connecting rod 341 and a bayonet 342 are provided on the quick-installation shaft 34. The connecting rod 341 is rotationally matched with the connection hole 221, and the bayonet 342 is matched and installed with the connection block 222. The quick-installation shaft 34 can be quickly disassembled and assembled with the pneumatic chuck 22, simplifying the disassembly and assembly steps and improving the clamping efficiency.

[0027] As Figure 2As shown, the workpiece 5 to be processed is semi-circular. On both sides of the semi-circular arc of the workpiece 5 to be processed, there are holes 51 to be processed respectively, and the two holes 51 to be processed on both sides are respectively arranged on a vertical plane. There are two semi-circular arc grooves 321 on the clamping plate 32, and the radian of the semi-circular arc groove 321 completely fits the outer shape radian of the workpiece 5 to be processed. There is also a threaded hole 32 of the clamping plate on the clamping plate 32 that cooperates with the fastening bolt 33.

[0028] As Figure 5 shown, the clamping device 3 further includes an L-shaped auxiliary limiting plate 4. One side of the L-shaped auxiliary limiting plate 4 is provided with an installation groove 41 whose width is the same as the width of the semi-circular arc boss 311. When the workpiece 5 to be processed is clamped and installed, the installation groove 41 is installed in cooperation with the semi-circular arc boss 311, and the L-shaped auxiliary limiting plate 4 performs auxiliary limiting on the workpiece 5 and the clamping plate 32.

[0029] The specific implementation method of this embodiment is as follows: Before clamping the workpiece 5 to be processed, first fix the quick-installation shaft 34 to the base through screws, then install the L-shaped auxiliary limiting plate 4 onto the semi-circular arc boss 311 through the installation groove 41, then place the workpiece 5 to be processed onto the semi-circular arc boss 311, and then use the clamping plate 32 and the fastening bolt 33 to clamp the workpiece 5. The L-shaped auxiliary limiting plate 4 limits the positions of the workpiece 5 and the clamping plate 32, reducing the subsequent position adjustment steps and improving the clamping efficiency. After clamping the workpiece 5 to be processed, pull out the L-shaped auxiliary limiting plate 4, repeat the above steps, and then clamp the next workpiece 5 to be processed until all the semi-circular arc bosses 311 on the base are clamped with the workpiece 5 to be processed. Then insert the connecting rod 341 of the quick-installation shaft 34 into the connecting hole 221, and install the connecting block 222 in cooperation with the bayonet 342.

[0030] After the clamping work is completed, the workpiece 5 to be processed is processed. The workpiece 5 to be processed has processing holes of various size models. The cutting tool first processes the processing holes of the same size. After the processing holes of the same size are processed, the cutting tool is replaced, and then the processing holes of the next size are continued to be processed until all the processing areas are processed. Then, the quick-installation shaft 34 is removed from the pneumatic chuck 22, and the next batch of workpieces 5 to be processed is replaced, and the above process is repeated for processing.

[0031] The above is only the optimal solution embodiment of the present invention and is not used to limit the present invention. Those skilled in the art should also be within the protection scope of the present invention when making various modifications or replacements to the present invention without departing from the essence and protection scope of the present invention.

Claims

1. A four-axis zero-point interchange fixture, comprising a machine base (1), a driving device (2) and a clamping device (3), characterized in that, The clamping device (3) includes a base (31), a clamping plate (32) and a fastening bolt (33). Two semi-circular bosses (311) are provided in each of the four directions of the base (31), and the two semi-circular bosses (311) are symmetrically distributed. A tool avoiding groove (312) and a base threaded hole (313) are further provided on the semi-circular arc. The fastening bolt (33) passes through the clamping plate (32) and the base (31) to fix the workpiece (5) to be machined on the semi-circular boss (311). A quick mounting shaft (34) is provided at the lower end of the base (31), and the quick mounting shaft (34) is quickly disassembled and assembled with the drive shaft of the drive device (2).

2. The four-axis zero-point interchange fixture according to claim 1, characterized in that: Two semi-circular grooves (321) are provided on the clamping plate (32), and the radian of the semi-circular groove (321) completely fits the outer shape radian of the workpiece (5) to be machined. A clamping plate threaded hole (322) matching the fastening bolt (33) is further provided in the middle of the clamping plate (32).

3. The four-axis zero-point interchange fixture according to claim 1, characterized in that: The clamping device (3) further includes an L-shaped auxiliary limiting plate (4). An installation groove (41) with a width consistent with that of the semi-circular boss (311) is provided on one surface of the L-shaped auxiliary limiting plate (4). When the workpiece (5) to be machined is clamped and installed, the installation groove (41) cooperates with the semi-circular boss (311), and the L-shaped auxiliary limiting plate (4) performs auxiliary limiting on the workpiece (5) and the clamping plate (32).

4. The four-axis zero-point interchange fixture according to claim 1, characterized in that: The drive device (2) is provided with a four-axis turntable (21), and the four-axis turntable (21) is driven by a pneumatic motor (211).

5. The four-axis zero-point interchange fixture according to claim 4, wherein: The drive device (2) is further provided with a pneumatic chuck (22). A connection hole (221) is provided in the middle of the pneumatic chuck (22), and a connection block (222) is provided on the surface of the pneumatic chuck (22). A connecting rod (341) and a bayonet (342) are provided on the quick mounting shaft (34). The connecting rod (341) is rotationally matched with the connection hole (221), and the bayonet (342) is cooperatively installed with the connection block (222).

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