Abstract
In the paper are presented investigation results of an effects of adopted strategy of profile-dividing grinding of a cylindrical gear teeth, performed on the Rapid Höfler 900 grinder, on machining accuracy and surface roughness of the teeth. The strategies have taken into considerations changes in the following parameters determining obtained results of the grinding: number of passes, number of leads, shaping method of the grinding wheel.
Highlights
Profile grinding relies on the machining of the working surfaces of the wheel teeth using a grinding wheel appropriately shaped to the shape of a tooth profile
There are three methods of profile grinding [3]: with symmetrical position of a grinding wheel – the advantage of this method is that two sides of adjacent teeth are ground at the same time; working conditions of the grinding wheel, resulting from the variable grinding depth along the profile of the grinding wheel during radial feed, can be regarded as a disadvantage; with asymmetrical position using one grinding wheel – the advantage of this method is more favorable grinding wheel working conditions, where only one side of the tooth is machined;
The Rapid Höfler 900 grinder for profile grinding of gears is installed at BEFARED, a company dealing in the production of general purpose gear reducers and motoreducers
Summary
In the paper are presented investigation results of an effects of adopted strategy of profile-dividing grinding of a cylindrical gear teeth, performed on the Rapid Höfler 900 grinder, on machining accuracy and surface roughness of the teeth. Profile-dividing grinding is the most accurate method of gear finishing machining, especially with unsymmetrical grinding, due to the more favorable working conditions of the tool [1,2,3, 9]. The following parameters of the profile-dividing grinding were changed in the program of machining of gears: the number of passes, number of jumps, shaping the profile of the grinding wheel. In order to determine the influence of selected parameters of the profile-dividing grinding on the accuracy and roughness of grinded teeth, a different number of passes and jumps of the grinding wheel were adopted
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