Method for machining reverse bevel gear by variable pressure angle hobbing cutter

A technology of variable pressure angle and inverted bevel teeth, which is applied to elements with teeth, gear teeth, belts/chains/gears, etc., which can solve the problem of increased risk of transmission out-of-gear and reduce the risk of out-of-gear , reduce casting and avoid errors

Active Publication Date: 2019-07-23
SHAANXI FAST GEAR CO
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that large errors occur when the joint surfaces of the inverted bevel gear processed by the existing processing method increase the risk of the transmission being out of gear, and provide a method for machining the inverted bevel gear with a variable pressure angle hob method

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  • Method for machining reverse bevel gear by variable pressure angle hobbing cutter
  • Method for machining reverse bevel gear by variable pressure angle hobbing cutter
  • Method for machining reverse bevel gear by variable pressure angle hobbing cutter

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Embodiment Construction

[0021] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The present invention provides a method for machining inverted bevel teeth with variable pressure angle hobs, that is, using the existing method for machining inverted bevel teeth with variable pressure angle hobs, specifically: recalculate the new root cone angle during processing, according to The calculated root taper angle adjusts and debugs the movement path of the machine tool shaft, thereby changing the angle between the hob moving path line and the gear center line, and completing the machining of the inverted bevel gear. The root cone angle calculation method of variable pressure angle hob processing inverted bevel gears has no relevant literature documents at present. According to the analysis, calculation, derivation and verification of the problems encountered by the applicant in actual processing, the...

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Abstract

The invention relates to a method for machining a reverse bevel gear by a variable pressure angle hobbing cutter. By means of the method, the problem that an out-of-gear risk of a transmission is increased due to the occurrence of bigger errors when matching a joint surface and a reverse bevel gear machined by an existing machining method is solved. The method comprises the following steps: 1, calculating a standard root cone angle theta by using a formula through a back taper tooth pressure angle alpha n and a rounding included angle gamma; 2) determining a pressure angle alpha t of the variable pressure angle hobbing cutter; 3) calculating a variable pressure angle back root cone angle theta'; and 4, debugging the movement path of a machine tool shaft on a gear hobbing machine accordingto the variable pressure angle back root cone angle theta', and finishing the machining of the reverse bevel gear by the variable pressure angle hobbing cutter.

Description

technical field [0001] The invention relates to a method for machining inverted bevel gears, in particular to a method for machining inverted bevel gears with a variable pressure angle hob. Background technique [0002] Inverted bevel gears combined with gear hub parts in automobile synchronizers can generally be processed by hobbing, shaping, milling, etc. Among them, hobbing is the most widely used because of its high efficiency and low cost. In general, a gear with a parameter corresponds to a hob with a parameter, but in order to save development costs, the existing hob will be used for the processing of the new parameter gear after calculation and analysis. For hobs with the same pressure angle, variable pressure angle hobs (hobs with different pressure angles from the processed gear are collectively referred to as variable pressure angle hobs) can be used to process inverted bevel teeth. [0003] When designing and processing inverted bevel gear hobs, the same pressur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F5/20
CPCB23F5/20
Inventor 姚景超寇植达唐永鹏
Owner SHAANXI FAST GEAR CO
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