A gear hob with adjustable pitch

Abstract

The invention discloses a hob with the adjustable tooth pitch for gear machining. The hob comprises a main shaft, wherein a bearing plate is fixedly connected to the outer side of the main shaft, andfour upper-layer connecting rods and four lower-layer connecting rods are movably connected to the front face and the back face of the bearing plate respectively; and tool holders are movably connected to the ends, far away from the bearing plate, of the four upper-layer connecting rods and the four lower-layer connecting rods correspondingly, the outer sides of the tool holders are fixedly connected with movable tool teeth, and the sides, opposite to the movable tool teeth, of the tool holders are movably connected with springs. According to the device, the upper-layer connecting rods and thelower-layer connecting rods can be driven to move synchronously through the main shaft, at the moment, the upper-layer connecting rods and the lower-layer connecting rods can drive the tool holders to slide in sliding grooves, due to the fact that the movable tool teeth are fixedly connected with the tool holders, the movable tool teeth can be driven to move synchronously when the tool holders move, and the upper-layer connecting rods and the lower-layer connecting rods can drive the tool holders to slide downwards in the sliding grooves when the main shaft rotates clockwise.

Description

technical field [0001] The invention relates to the technical field of metal processing, in particular to a hob for processing gears with adjustable tooth pitch. Background technique [0002] Gears play an important role in the convenience of modern industry and mechanical equipment. Now the more common practice for gear processing is to use hobs to directly cut and shape. Therefore, the pitch of gears depends on the pitch of hobs. However, the existing hobs Since the cutter teeth are all fixedly welded, it can only cut gears with one pitch, and the pitch of the gears cannot be adjusted. Therefore, we have proposed a hob for gear processing with adjustable pitches, which has the ability to cut gears. The advantage of being adjustable. Contents of the invention [0003] In order to achieve the purpose of adjusting the tooth pitch of the above-mentioned cutting gear, the present invention provides the following technical solutions: [0004] A hob for gear processing with a...

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Problems solved by technology

[0002] Gears play an important role in the convenience of modern industry and mechanical equipment. Now the more common practice for gear processing is to use hobs to directly cut and shape. Therefore, the pitch of gears depends on the pitch of hobs. However, the existing hobs Since the cutter teeth are all fixedly welded, it can only cut gears with one pitch, and the pitch of the gears cannot be adjusted. Therefore, we have proposed a hob for gear processing with adjustable pitches, which has the ability to cut gears. The advantage of adjustable distance

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