CN-224223268-U - Clamp for worm gear finish turning

Abstract

The utility model relates to the technical field of worm gear machining, in particular to a clamp for worm gear finish turning, which comprises a mounting base, wherein a centering shaft for connecting a worm gear is arranged in the mounting base, a stepped shaft is detachably arranged at one end of the centering shaft, a driving cylinder is fixedly arranged in the mounting base, the output end of the driving cylinder is fixedly connected with the other end of the stepped shaft, a sliding groove is formed in the top of the mounting base, a plug rod is slidably arranged in the sliding groove, a clamp piece is arranged on the plug rod, a base is fixedly arranged at one side of the mounting base, and the top end of the base is abutted to the centering shaft. The clamp device has the advantages that the clamp device is used for carrying out three-point clamping on the outside of worm wheels with different sizes, when the worm wheels are required to be subjected to finish turning operation after clamping, the driving cylinder is used for driving the centering shaft at the tail end of the stepped shaft to move, the centering shaft slides on the base in the moving process, so that the clamp device on the inserted link is driven to move inside the chute, and the stability of clamping the worm wheels in the moving process is maintained.

Inventors

• CHENG KAI
• WANG YUELIN
• XU CHENGWEN
• TAN WEI
• YUN HONGYUAN
• ZHOU FEI
• SUN KANG
• DING HUAPING
• WANG YE
• JU JIAHUI
• XI HAIYAN

Assignees

• 常州德劢精密传动有限公司

Dates

Publication Date

20260512

Application Date

20250424

Claims (6)

1. 1. The clamp for finish turning of the worm wheel comprises a mounting base (1), wherein a centering shaft (2) for connecting the worm wheel is arranged in the mounting base (1), the clamp is characterized in that a stepped shaft (4) is detachably arranged at one end of the centering shaft (2), a driving air cylinder (3) is fixedly arranged in the mounting base (1), the output end of the driving air cylinder (3) is fixedly connected with the other end of the stepped shaft (4), a sliding groove (19) is formed in the top of the mounting base (1), a plug rod (18) is slidably arranged in the sliding groove (19), clamp pieces are arranged on the plug rod (18) and used for clamping the worm wheel with different sizes, a base (10) is fixedly arranged on one side of the mounting base (1), and the top end of the base (10) is abutted to the centering shaft (2).
2. 2. The clamp for worm gear finish turning according to claim 1, wherein the clamp comprises a shell (20) slidably mounted on a mounting base (1), a threaded rod (6) is rotatably mounted in the shell (20), a turntable (11) is fixedly mounted on the outer portion of the threaded rod (6), two groups of extension blocks (12) are fixedly mounted on the outer portion of the turntable (11), bent rods (13) are rotatably connected to the inner portions of the two groups of extension blocks (12), side rods (14) are movably connected to the tail ends of the bent rods (13), the top ends of the inserted rods (18) are movably connected with the inner portions of the side rods (14), and the two groups of side rods (14) are arranged in a mirror symmetry mode; The inside of step axle (4) has been seted up transverse hole (5), and threaded rod (6) runs through the inside of transverse hole (5), and threaded rod (6) bottom threaded connection has nut cover (7), the outside of nut cover (7) has cup jointed flexible connecting rod (8), the terminal fixed mounting of flexible connecting rod (8) has flexible sill bar (9), flexible sill bar (9) slidable mounting is in base (10), engagement piece (15) are all installed to the terminal of flexible sill bar (9) and side lever (14).
3. 3. The fixture for finish turning of a worm wheel according to claim 1, wherein a plurality of sets of fastening bolts (16) are mounted on the end of the centering shaft (2) and one side of the worm wheel, and at least four sets of fastening bolts (16) are provided.
4. 4. The clamp for finish turning of worm wheels according to claim 2, wherein the bent rod (13) has a V-shaped structure, and the bent rods (13) are oppositely arranged with respect to the center of the turntable (11).
5. 5. The clamp for finish turning of the worm wheel according to claim 1, wherein the base (10) is of an L-shaped structure, and a slide hole for sliding the telescopic connecting rod (8) is formed in the base (10).
6. 6. The fixture for finish turning of worm wheels according to claim 2, characterized in that a rotation knob (17) is fixedly mounted on the top end of the threaded rod (6).

Description

Clamp for worm gear finish turning Technical Field The utility model relates to the technical field of worm gear machining, in particular to a clamp for worm gear finish turning machining. Background The worm gear finish turning is used in a worm gear finish machining lathe, the precision and the surface quality of a worm gear are mainly improved, the worm gear is guaranteed to be well meshed with a worm, in the finish turning process, a worm gear blank is guaranteed to be firmly clamped, a cutter is guaranteed to be aligned with the center of a workpiece, preliminary cutting is conducted, most of allowance is removed for rough machining, further cutting is conducted, the final size is close, fine cutting is conducted finally, and the size and the surface roughness required by a drawing are achieved. In the prior art, as disclosed in patent publication No. CN206811573U, a worm wheel shaft finish machining lathe fixture comprises a driving device and a pull rod, wherein the left end of the pull rod is connected with the driving device, the right side of the pull rod is provided with a fixture parent body, the right end of the pull rod is provided with a bolt connected with the pull rod, the right end of the bolt is provided with a center connected with the bolt, the center is arranged in the fixture parent body, the center moves left and right in the fixture parent body, and when the center moves left to the left end of the fixture parent body, the left end of the center abuts against the inner wall of the left end of the fixture parent body. The left-right stroke of the center is fixed by the clamp parent body, so that centering accuracy is improved, but in the worm gear machining process, the worm gear needs to be moved, and stability of clamping the worm gear in the moving process cannot be maintained. Disclosure of utility model In view of the above, the present utility model aims to provide a fixture for finish turning a worm wheel, which solves the problem that the worm wheel needs to be moved during the worm wheel machining process, and the stability of clamping the worm wheel during the movement process cannot be maintained. According to the technical scheme, the fixture for finish turning of the worm gear comprises a mounting base, wherein a centering shaft for connecting the worm gear is arranged in the mounting base, a stepped shaft is detachably arranged at one end of the centering shaft, a driving cylinder is fixedly arranged in the mounting base, the output end of the driving cylinder is fixedly connected with the other end of the stepped shaft, a sliding groove is formed in the top of the mounting base, an inserting rod is slidably arranged in the sliding groove, a clamping piece is arranged on the inserting rod and used for clamping worm gears of different sizes, a base is fixedly arranged on one side of the mounting base, and the top end of the base is abutted to the centering shaft. Preferably, the fixture comprises a shell which is slidably arranged on the mounting base, a threaded rod is rotatably arranged in the shell, a turntable is fixedly arranged outside the threaded rod, two groups of extension blocks are fixedly arranged outside the turntable, a bent rod is rotatably connected in the extension blocks, the tail end of the bent rod is movably connected with a side rod, the top end of the inserted rod is movably connected with the side rod, the two groups of side rods are arranged in a mirror symmetry manner, a transverse hole is formed in the stepped shaft, the threaded rod penetrates through the transverse hole, a nut sleeve is in threaded connection with the bottom end of the threaded rod, a telescopic connecting rod is sleeved outside the nut sleeve, a telescopic bottom rod is fixedly arranged at the tail end of the telescopic connecting rod, the telescopic bottom rod is slidably arranged in the base, and meshing blocks are arranged at the tail ends of the telescopic bottom rod and the side rod. Preferably, a plurality of groups of fastening bolts are arranged at the tail end of the centering shaft and one side of the worm wheel, and at least four groups of fastening bolts are arranged. Preferably, the bent rod is of a V-shaped structure, and the bent rods are oppositely arranged with the center of the circle of the turntable as the reference. Preferably, the base is of an L-shaped structure, and a sliding hole for sliding the telescopic connecting rod is formed in the base. Preferably, a rotary button is fixedly arranged at the top end of the threaded rod. The utility model has the beneficial effects that: The worm wheel is roughly turned and semi-finely turned, after a threaded hole is drilled, the centering shaft is connected with the worm wheel to ensure the perpendicularity between the installation end face of the worm wheel and the center line of the centering shaft, the other end of the centering shaft is fixedly connected with the stepped shaft, the three-point clamping is