Tooth-face contact-area quantized testing method

Abstract

The invention supplies a measure method of quantizing the contact area of tooth flank, its feature is that checking procedure in turn: (1) manufacturing size gear and then heat treatment, gain the discrete data point of the size faces of gear teeth via three-dimensional measuring machine, uniform the measured data point to the theoretic engagement postural coordinate system through coordinate transformation;(2) fitting the discrete data point of the size faces of gear teeth to free type camber;(3)divide the instantaneous mesh point of mesh gear meshing gear and ellipse in the contact area, integrate the whole instantaneous mesh point into mesh trace, integrate the whole instantaneous contact area ellipse into mesh area. Finally, it would be factually reflected the true tooth flank mesh trace and the position and shape of contact area armed with machining error and heat treatment distortion, along with the quantizing render of the mesh trace and the contact area position and shape related the theoretic mesh state coordinate system, it supplies quantification basis for theoretic TCA putting up contrastive analysis and tooth flank error manufacture compensation.

Description

technical field [0001] The invention provides a quantitative inspection method for a tooth surface contact area, which belongs to the technical field of mechanical engineering. Background technique [0002] For bevel or hypoid gear meshing transmissions to test transmission quality or tooth support contact, reference is made to US Patent No. 3,795,143 to Deprez et al. Usually, the method of detecting the tooth surface contact mark (contact area) on the bevel gear rolling inspection machine is to apply red lead oil on the tooth surface of the large gear, and then run the pair of gears under a light load to squeeze out Contact impressions, when evaluating the quality of contact impressions on the surface of gears, the customary method is to use a qualitative judgment made by visual inspection to determine whether the shape and position of the contact area meet the requirements. All are relative changes, so the judgment of the contact area of ​​the gear teeth is inaccurate. I...

AI Technical Summary

Problems solved by technology

[0005] A significant problem in the above two methods is that although each tooth surface produces a contact impression, there is no reference point when viewing the image.

[0008] (1) Due to the inevitable installation error of the gear pair under test, the contact mark deviates from the theoretical meshing area, which is not only affected by the tooth surface processing error and heat treatment deformation, but also affected by the installation error of the gear pair;

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