Method for grinding pregeared bevel gears
OwnerDieter Wienerinventor
Life of this patent
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Abstract
A method and device for grinding pregeared bevel gears in which the grinding of both flanks of the tooth gap is performed in a single setting and by a single tool in a hobbing process. The grinding machine is provided with a truing device which is rigidly connected to a stationary part of the machine and in which a truing tool is pivotable relative to a grinding wheel to adjust the engagement of the grinding wheel and gear to be treated. A radial movement is imparted to the grinding tool and a compensating movement in a direction perpendicular to that of the radial movement is also imparted to the grinding tool, whereby the grinding of pregeared bevel gears having any profile is possible.
Claims7
A method of grinding pregeared bevel gears in a hobbing motion of a bevel gear and a grinding tool in a grinding machine including a truing device, the method comprising the steps of:
- grinding at a gap of each tooth a right-hand flank and a left-hand flank in a single setting by a single grinding tool, by first grinding one flank of a tooth gap in a forward hobbing motion, then grinding another flank in the same tooth gap in a rearward hobbing motion by imparting first to said grinding tool in a radial movement over a predetermined distance and then a compensating movement in a direction perpendicular to that of the radial movement, said compensating movement being a rotational movement of the grinding tool, such that a center point of a grinding radius of said grinding tool is shifted;
- numerically controlling said radial movement and said compensating movement in the grinding machine;
- continually changing an adjustment of said grinding machine, by changing said predetermined distance between the grinding of the right-hand flank and the left-hand flank so as to enable grinding of another side of the flank;
- and
- changing the engagement between said grinding tool and a gear being treated from said one flank to said another flank.
A method of grinding pregeared bevel gears in a hobbing motion of a bevel gear and a grinding wheel in a grinding machine including a truing device, the method comprising the steps of:
- grinding at a gap of each tooth a right-hand flank and a left-hand flank in said tooth gap in a single setting by a single grinding tool;
- continually changing an adjustment of the grinding tool, by first grinding one flank of said tooth gap in a forward hobbing motion, then grinding another flank in the same tooth gap in a rearward hobbing motion by imparting first to said grinding tool a radial movement and then a compensating movement in a direction perpendicular to that of the radial movement, said compensating movement being a rotational movement of the grinding tool, such that a center point of a grinding radius is shifted;
- numerically controlling said radial movement and said compensating movement in the grinding machine;
- continually changing an adjustment of the grinding machine;
- and
- moving the grinding tool toward the truing device to determine a radius of the grinding tool.
Dependencies are inferred from the claim text.