DEPARTURE TOOTH PROFILE ARCHED GEAR OF INVOLUTE IN THE SHAPING OF BUTT-END CHISEL HEADS
DOI:
https://doi.org/10.20535/2305-9001.2014.70.34527Keywords:
arched, butt, errors, profileAbstract
Purpose. Determination of rejections of tooth profile of the arched gear-wheels from involute at their cutting by butt-end heads by the method of copying in different cuts, perpendicular to axis of wheel.
Approach. At shaping of the cylindrical arched gear-wheels by butt-end chisel heads by a method a copying involute profile will get only in a central cut on the width of wheel. In other cuts, perpendicular to axis of wheel, a profile will be different from involute. The shown out analytical dependences for the calculation of type of hollow of tooth in any crossing, perpendicular to axis of gear-wheel, enable to define the errors of profile at cutting of these wheels. On the basis of the conducted calculations influence of parameters of gear-wheel and chisel head is shown on the errors of profile. Hooking of the arched gear-wheels, cut by a butt-end chisel head by the method of copying and solution of problem of the mutual crossing of profiles of two gear-wheels is offered is investigational.
Conclusion. Profile of tooth of the arched gear-wheel at his shaping by a butt-end chisel head in cuts, perpendicular to axis of wheel (except for middle), characterized by the rejection of profile (by a certain error). It is in-process shown that the size of error of profile depends on the radius of chisel head, distance from a middle cut, module, amount of teeth, corner of hooking and offset ratio.
Importance. The shown out analytical dependences enable to forecast the size of error of profile of the arched wheels at cutting butt-end chisel heads.
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