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A tangential feed hobbing method for gear hobbing machines

A technology of tangential feeding and gear hobbing, which is applied to components with teeth, gear teeth, mechanical equipment, etc., can solve the problems of inability to automatically control the tangential displacement of the hob tool holder, low utilization rate, and high cost. Achieve the effects of improving production efficiency, recovering production losses and reducing costs

Active Publication Date: 2016-09-14
CRRC QISHUYAN INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary gear hobbing machines generally do not have a special tangential tool holder, and cannot automatically control the tangential displacement of the hob tool holder. Even if there is a special tangential tool holder, the cost is high and the utilization rate is low.

Method used

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  • A tangential feed hobbing method for gear hobbing machines
  • A tangential feed hobbing method for gear hobbing machines
  • A tangential feed hobbing method for gear hobbing machines

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The gears in this example are hobbed by a gear hobbing machine, and the effective tooth width common normal of the gear after hobbing is required root circle maximum value df max =716.797mm, sub-circle pressure angle α=25°. However, during the gear hobbing process, the explosion occurred, resulting in defects on the tooth surface. The contour line after the explosion is as follows: figure 1 "Tooth Profile 1" shown in . In this case, if you continue to hob the gear in the normal way, the tooth profile after hobbing is as follows figure 1 "Tooth Profile 2" shown in the figure 2 Clearly visible tooth surface defects cannot be removed.

[0025] The tangential feed hobbing method for gear hobbing machine of the present embodiment, its ste...

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Abstract

The invention provides a tangential feeding hobbing method for a hobbing machine. The tangential feeding hobbing method has the advantages that the tangential feeding hobbing method is designed for solving the problem of defects of tooth surfaces due to faults of machine tools or hobs and the like and overcoming shortcomings of existing equipment, tangential displacement of hob frames can be effectively controlled in manual modes under the condition that special tangential frames for the existing equipment are omitted, accordingly, defects of tooth surfaces can be ingeniously removed, gear design requirements can be met, gear meshing and the service lives of gears can be guaranteed, and production loss can be recovered; the tangential frames do not need to be specially ordered owing to the tangential feeding hobbing method, accordingly, the cost can be reduced, the production effectiveness can be improved, and the tangential feeding hobbing method is economical and practical.

Description

technical field [0001] The invention relates to a tangential feed hobbing method used for a gear hobbing machine, belonging to the field of mechanical processing methods. Background technique [0002] There are various gear structures, and the general precision grade is 4~7 (GB / T10095), and the processing technology of first hobbing and then grinding is usually adopted. Gear hobbing is the most widely used gear cutting method, which can be used for hobbing cylindrical spur gears, helical gears, worm gears and spline shafts. According to statistics, gear hobbing machines in some countries account for about 45% to 50% of all gear machine tools. Using ordinary gear hobbing machine hobbing, once the machine tool or hob breaks down, it is easy to produce tooth surface defects. In this case, if the gear hobbing is continued according to the normal method, it is difficult to remove the tooth surface defects and cannot meet the design requirements, which will have an impact on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F5/00
Inventor 高辉辉陆堰龙韩锦康刘玉生石泱梁瑞珍邵朋朋
Owner CRRC QISHUYAN INSTITUTE CO LTD
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