Method for the production of a workpiece and grinding machine
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United States of America Patent
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Nov 20, 2012
Grant Date -
Feb 4, 2010
app pub date -
Jul 29, 2009
filing date -
Jul 30, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a method for the production of a rotor of a rotary screw compressor (1) with a cylindrical basic shape, which has a helical profile (2) at its outer circumference, wherein the method comprises the steps of: a) Pre-processing of the workpiece (1) by bringing in the profile (2), wherein the profile (2) has a stock compared with the finished shape, b) Pre-grinding of the profile (2) by a rough-machining process in a grinding machine, wherein a part of the stock is removed and c) Finish-grinding of the profile (2) by a finish-machining process in the grinding machine, wherein the remainder of the stock is removed and the finished shape of the profile (2) is produced. To improve the efficiency of the production especially of rotors of rotary screw compressors and ensure a high quality of the production the invention is characterized in that the pre-grinding and/or the finish-grinding is carried out with a grinding worm (3) by a continuous generative grinding process.
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