Hebei gear factory processing base - Yixin machinery accessories

  Precautions for circular arc gear machining , What should we pay attention to in circular arc gear machining? The following is the summary and analysis of Xiaobian's work experience
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In theory, circular arc gears are driven by the meshing of helical surfaces
The axial tooth pitch of a pair of meshing gears must be equal, and the overlap coefficient must be greater than 1, that is, the tooth inclination angle should be large enough; In order to ensure that the axial tooth pitch can meet certain accuracy requirements, hob machining is a correct way, and spiral angle error is also the main reason for the unequal axial tooth pitch; It will reduce the contact length in the tooth width direction and affect the working balance; Therefore, the smaller the helix angle error is, the better
It shall not be greater than 4 seconds and the deviation shall be consistent as far as possible
The meshing gear pairs shall be completed with the same set of change gears on the same machine tool as far as possible The service life of the gear will be affected by the deviation of the arc tooth pitch and the contact length of the gear The formed tooth surface curve of circular arc gear is consistent with the tooth profile curve of tool tool, which is not completely the envelope of the moving track of the blade
Therefore, the tooth profile accuracy and tooth surface roughness of parts are directly related to the accuracy of tool tool tool, especially the precision workpiece after regrinding of tool tool tool should be controlled; In addition, two hobs, convex and concave, are needed to process the conjugate gear
Because there is no undercutting of the spiral teeth, the number of small teeth of the gear can be slightly smaller 3
The circular arc gear has good running in performance, so that the error generated by the tool can be quickly expanded from the initial point contact to the MI contact through the loading running in after assembly
In the processing of gear blank, we must pay attention to the control of the external diameter dimension accuracy and position accuracy Sprocket factory http://www
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