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CN-224209221-U - Gear hobbing anchor clamps

CN224209221UCN 224209221 UCN224209221 UCN 224209221UCN-224209221-U

Abstract

The utility model discloses a gear hobbing clamp which comprises a mounting seat, wherein the top of the mounting seat is fixedly connected with a butt joint seat, a rectangular cavity is formed between the mounting seat and the butt joint seat, a through hole is formed in the top of the butt joint seat, a driving rod is rotatably connected in the through hole, a threaded hole is formed in the bottom of the driving rod, a screw rod is connected with the inner wall of the threaded hole in a threaded mode, and the bottom of the screw rod is fixedly connected with the inner wall of the rectangular cavity. According to the utility model, a synchronous radial expansion structure of a plurality of expansion blocks is adopted, so that uniform stress clamping of the inner wall of a workpiece is realized, the problem of stress concentration caused by traditional single-point clamping is effectively solved, the clamping stability is improved remarkably, the vibration influence in the processing process is greatly reduced through the damping effect of compressed gas, the quality of the processed surface is improved obviously, and the modularized expansion block design enables the clamp to have excellent adaptability, so that the processing requirements of workpieces with different sizes and shapes can be met, and the application range is wider.

Inventors

  • WENG CHUNJIE
  • GU JIANJIAN

Assignees

  • 嘉兴太平洋江茂电子有限公司
  • 浙江远铭精密机械有限公司

Dates

Publication Date
20260508
Application Date
20250729

Claims (7)

  1. 1. The utility model provides a gear hobbing anchor clamps, includes mount pad (1), its characterized in that, the top fixedly connected with butt joint seat (2) of mount pad (1), rectangular cavity has been seted up between mount pad (1) and butt joint seat (2), through-hole has been seted up at the top of butt joint seat (2), and the inside rotation of through-hole is connected with actuating lever (3), threaded hole has been seted up to the bottom of actuating lever (3), and the inner wall threaded connection of threaded hole has lead screw (4), the bottom of lead screw (4) and the inner wall fixed connection of rectangular cavity, the outer wall fixed cover of actuating lever (3) is equipped with worm wheel (6), and the inner wall rotation of rectangular cavity is connected with worm (5), meshing connection between worm (5) and worm wheel (6), the outer wall fixed cover of actuating lever (3) is equipped with rectangular piston (7), air cavity (9) have been seted up to the outer wall of mount pad (1), the inner wall of air cavity (9) is fixed with into air abutment (10), the outer wall of actuating lever (3) is equipped with the tight subassembly of clamp.
  2. 2. The gear hobbing clamp as claimed in claim 1, wherein the clamping assembly comprises a plurality of expansion blocks (13), two conical pushing blocks (12) are fixedly sleeved on the outer wall of the driving rod (3), the outer walls of the two conical pushing blocks (12) are respectively connected with the outer walls of the expansion blocks (13) in a sliding mode, and rubber blocks (14) are fixedly connected to the expansion blocks (13) in a pairwise mode.
  3. 3. The gear hobbing clamp as claimed in claim 1, wherein the outer wall of the worm (5) is fixedly sleeved with a bearing, and the outer ring of the bearing is fixedly connected with the inner wall of the rectangular cavity.
  4. 4. The gear hobbing clamp as claimed in claim 1, wherein a diamond-shaped notch (11) is formed in one end of the worm (5), and an air pump is fixedly communicated with one end of the air inlet butt joint (10).
  5. 5. The gear hobbing clamp as claimed in claim 1, wherein the outer wall of the mounting seat (1) is provided with a through hole, and the inner wall of the through hole is rotatably connected with the outer wall of the worm (5).
  6. 6. The gear hobbing clamp as claimed in claim 1, wherein the outer wall of the rectangular piston (7) is fixedly sleeved with a return-type sealing ring (8), and the outer wall of the return-type sealing ring (8) is slidably connected with the inner wall of the rectangular cavity.
  7. 7. The gear hobbing clamp as claimed in claim 1, wherein the top of the driving rod (3) is provided with a butt joint hole, and the inner wall of the butt joint hole is in threaded connection with a top cover (15).

Description

Gear hobbing anchor clamps Technical Field The utility model relates to the technical field of hobbing, in particular to a hobbing clamp. Background Gear hobbing is a gear processing method, belongs to the principle of generating method, and is used for processing gears through hob cutters, and is similar to the meshing of helical gear pairs. In the gear hobbing process, the hob and the gear blank are in forced meshing transmission strictly according to the transmission ratio of the gear to the rack, and the continuous transmission of the hob forms an involute tooth shape of a workpiece. The gear needs to be fixed in position during processing, so that a gear hobbing clamp is needed. In the prior art, when a single clamping point is adopted, the traditional clamp causes uneven clamping, lacks a multi-point synchronous expansion mechanism, has insufficient clamping stability, has poor adaptability to irregular inner holes, and directly influences surface quality by replacing workpiece vibration in the machining process, so that a gear hobbing clamp is provided for solving the problems. Disclosure of utility model The utility model aims to solve the defects in the prior art and provides a hobbing clamp. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a gear hobbing anchor clamps, includes the mount pad, the top fixedly connected with butt joint seat of mount pad, rectangular cavity has been seted up between mount pad and the butt joint seat, the through-hole has been seted up at the top of butt joint seat, and the inside rotation of through-hole is connected with the actuating lever, threaded hole has been seted up to the bottom of actuating lever, and the inner wall threaded connection of threaded hole has the lead screw, the bottom of lead screw and the inner wall fixed connection of rectangular cavity, the outer wall fixed cover of actuating lever is equipped with the worm wheel, and the inner wall rotation of rectangular cavity is connected with the worm, the meshing is connected between worm and the worm wheel, the outer wall fixed cover of actuating lever is equipped with rectangular piston, the air cavity has been seted up to the outer wall of mount pad, the inner wall fixed intercommunication of air cavity has the inlet butt joint, the outer wall of actuating lever is equipped with clamping assembly. Preferably, the clamping assembly comprises a plurality of expansion blocks, two conical pushing blocks are fixedly sleeved on the outer wall of the driving rod, the outer walls of the two conical pushing blocks are respectively and slidably connected with the outer walls of the expansion blocks, the expansion blocks are fixedly connected with rubber blocks in groups, the expansion blocks can have resetting capability through the rubber blocks, and the rubber blocks have elastic deformation capability. Preferably, the outer wall of the worm is fixedly sleeved with a bearing, the outer ring of the bearing is fixedly connected with the inner wall of the rectangular cavity, and the bearing is arranged to assist the worm to rotate stably. Preferably, a diamond notch is formed in one end of the worm, and an air pump is fixedly communicated with one end of the air inlet butt joint. Preferably, the outer wall of the mounting seat is provided with a through hole, the inner wall of the through hole is rotationally connected with the outer wall of the worm, and a sealing design is arranged between the through hole and the worm. Preferably, the outer wall fixed cover of rectangle piston is equipped with the type sealing washer that returns, the outer wall of type sealing washer and the inner wall sliding connection of rectangle cavity increase the leakproofness between rectangle piston and the rectangle cavity through setting up the type sealing washer that returns. Preferably, the top of the driving rod is provided with a butt joint hole, the inner wall of the butt joint hole is connected with a top cover in a threaded manner, the top cover is arranged to assist the plurality of expansion blocks in moving, and the expansion blocks are limited on the two conical pushing blocks. Compared with the prior art, the utility model has the advantages that: According to the scheme, the synchronous radial expansion structure of the plurality of expansion blocks is adopted, so that the uniform stress clamping of the inner wall of the workpiece is realized, the problem of stress concentration caused by the traditional single-point clamping is effectively solved, the clamping stability is improved remarkably, the vibration influence in the machining process is greatly reduced through the damping effect of compressed gas, the quality of the machined surface is obviously improved, the modularized expansion block design enables the clamp to have excellent adaptability, the machining requirements of workpieces with different sizes and shapes can be me