Grinding force model for worm-shaped grinding wheel gear grinding

A grinding wheel grinding and grinding force technology, applied in the field of grinding force model, can solve problems such as difficulty in establishing a grinding force model

Active Publication Date: 2016-05-11
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0003] Gear grinding is a complex grinding process. The grinding wheel and the workpiece are not simple cylinders or planes. At the same time, in the grinding process, the kinematic relationship between the contact points on the grinding wheel and the workpiece changes in real time, so it is difficult to establish Its grinding force model

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  • Grinding force model for worm-shaped grinding wheel gear grinding
  • Grinding force model for worm-shaped grinding wheel gear grinding
  • Grinding force model for worm-shaped grinding wheel gear grinding

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Embodiment Construction

[0066] The present invention is described below in conjunction with concrete processing example:

[0067] Using worm grinding wheel grinding technology to process helical cylindrical gears, processed gear parameters: normal pressure angle α n2 =27.5°, normal modulus m n2 =3, number of teeth Z 2 =27, helix angle β 2 =18°, dextrorotation. Parameters of worm-shaped grinding wheel: normal pressure angle α n1 =27.5°, normal modulus m n1 = 3, number of heads Z 1 =4, helix angle γ 1 =8°, dextrorotation. Shaft intersection angle λ=100°, center distance a=85.696.

[0068] S1. Establish an approximate model of the grinding process

[0069] During the gear grinding process, the theoretical tooth surface of the gear to be machined and the surface of the grinding wheel mesh in a spatially interlaced axis, and the contact condition is point contact. The coordinate system is as follows: figure 1 . According to the principle of meshing, at the contact point, the relative velocity b...

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Abstract

The invention relates to a grinding force model for worm-shaped grinding wheel gear grinding, and belongs to the field of gear machine manufacturing. On the basis of a G.Wener grinding force model, the invention provides a new grinding force model for the worm-shaped grinding wheel gear grinding. Firstly, an approximate model is established according to the relationship of the geometrical shape and the speed of a honing wheel and a workpiece on a contact point in a worm-shaped grinding wheel gear grinding process; secondly, establishing a cuttings model on the basis of the approximate model, and calculating speed, grinding thickness and equivalent diameter in a grinding process; and finally, on the basis of the approximate model, establishing an intermedian-gear gear honing grinding force model. The grinding force model is suitable for the worm gear grinding and intermedian-gear gear honing processing method. The method is suitable for calculating grinding force in the gear grinding processing which adopts a worm-shaped grinding wheel and comprises a worm grinding wheel gear grinding method and an intermedian-gear gear honing processing method. The method makes a gear grinding process be approximate into an excircle grinding process so as to simplify a calculation process and fill up the blank in the grinding force model for the worm-shaped grinding wheel gear grinding.

Description

technical field [0001] The invention relates to a grinding force model for grinding teeth of a worm-shaped grinding wheel, which belongs to the field of gear machinery manufacturing. Background technique [0002] The study of grinding mechanism can effectively solve the key problems in the grinding process. The main research content of grinding mechanism includes grinding parameters, grinding force, grinding temperature, grinding wheel wear, grinding wheel dressing, grinding fluid and surface integrity of grinding parts. According to the grinding parameters and the characteristics of the grinding wheel and the workpiece, the grinding force model can be established. The grinding power is based on the grinding force and grinding parameters. A part of the power consumption is converted into heat, and the grinding temperature model can be established. The grinding temperature model can predict the phenomenon of grinding burns and avoid damage caused by temperature. If it is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50B23Q17/09
CPCB23Q17/09G06F30/17G06F30/367G06F2119/18
Inventor 石照耀于渤林家春
Owner BEIJING UNIV OF TECH
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