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Hobbing machine

A gear hobbing machine and gear technology, applied in the field of gear hobbing machines, can solve the problems of chips stuck in the gears being processed and cannot wash off tool chips, etc., and achieve the effect of increasing fluid force

Active Publication Date: 2018-10-02
MITSUBISHI HEAVY IND MACHINE TOOL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to this gear machining method, chips generated on the tool and the gear to be machined cannot be washed away without using cutting oil, so chips may become stuck in the gear to be machined

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] First, use figure 1 as well as Figure 4 The gear hobbing machine 1 according to the first embodiment of the present invention will be described.

[0028] like figure 1 As shown, in the gear hobbing machine 1 , a hob 10 is supported rotatably about a hob rotation axis B, and a workpiece (gear to be machined) W is mounted rotatably about a workpiece rotation axis C. In addition, the hob 10 is movable in a cutting direction (machine front-back direction) perpendicular to the workpiece rotation axis C, and in a feed direction (machine up-down direction) parallel to the workpiece rotation axis direction. In addition, at the meshing position between the hob 10 and the workpiece W, the rotation direction of the hob 10 around the hob rotation axis B is the direction in which the hob 10 rotates from above to below.

[0029] Further, on the outer peripheral portion of the hob 10 are provided a plurality of cutting edge grooves 11 formed to traverse the worm thread, and cuttin...

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PUM

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Abstract

The present invention provides a hobbing machine capable of efficiently blowing off scraps adhering to a hob using a small amount of spraying air. To this end, a hobbing machine (1), whereby gear teeth are machined into a workpiece (W) using a hob (10) without machining oil by rotating the hob (10) and the workpiece (W) with respect to each other in a meshing manner, is equipped with an air-spray nozzle (21) which is disposed on the opposite side of the hob (10) from the workpiece (W) and which sprays air (A) toward a spraying position on the hob (10) so as to produce a countercurrent of air against the rotation of the hob (10), said spraying position being located on the opposite side of the hob (10) from the position where the hob meshes with the workpiece (W) relative to the hob rotation axis (B).

Description

technical field [0001] The present invention relates to a gear hobbing machine for blowing away chips generated during gear cutting from a hob by injecting gas. Background technique [0002] In recent years, in the technical field of gear machining, a machining method that does not use cutting oil has been provided from the viewpoint of environmental protection measures and improvement of the working environment. According to this gear machining method, chips generated on the tool and the gear to be machined cannot be washed away without using cutting oil, and therefore, chips may become stuck in the gear to be machined. [0003] For this reason, among gear hobbing machines capable of cutting gears without using cutting oil, there has been conventionally provided a gear hobbing machine in which cutting chips are blown away by injecting gas. In addition, Patent Document 1 discloses such a gear hobbing machine, for example. [0004] prior art literature [0005] patent docu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F23/12B23F5/22B23Q11/00
CPCB23F5/22B23F23/12B23Q11/00
Inventor 小松由尚石津和幸高木达朗吉村仁
Owner MITSUBISHI HEAVY IND MACHINE TOOL CO LTD