Abstract:
In a process for finishing the hardened teeth of a bevel gear wheel by grinding after hardening, the ground teeth are fine-honed, this procedure being carried out in the same chucking unit as used for the preceding grinding. A machine especially suitable for this procedure has a chucking device for the bevel gear wheel (12) and a double machining head for mounting two machining tools, namely a grinding wheel (26) and a honing wheel (28). The bevel gear wheel (12) to be machined is preferably a pinion, and accordingly the honing wheel (28) is a bevel gear-type machining tool. Pairing the ground and honed pinion (12) with a bevel gear which has been only ground results in a good noise standard, and the lapping required for hypoid gears manufactured in the traditional way, with its associated drawbacks, is unnecessary.
Abstract:
Disclosed is a method of grinding bevel gear teeth in a single-indexing process using a single grinding wheel provided with different bevel angles ( alpha ) to produce the desired grinding wheel radii (R): one flank is machined during grinding in downwards hobbing as far as a first turning point, another flank is produced in upwards hobbing as far as a second turning point, and machine settings are so adjusted in the turning points as to ensure a correct engagement angle and correct flank topography during the hobbing process, irrespective of the different bevel angles ( alpha ). The process combines the advantages of the known completing process, by which both flanks can be ground at the same time at the cost of imposing a particular wheel body geometry with conical teeth, with those of the known two-track process for grinding both flanks with a double grinding head, by which various additional correction factors can be introduced to optimise the flank shape for convex and concave flanks.
Abstract:
Disclosed is a method of grinding bevel gear teeth in a single-indexing process using a single grinding wheel provided with different bevel angles (α) to produce the desired grinding wheel radii (R): one flank is machined during grinding in downwards hobbing as far as a first turning point, another flank is produced in upwards hobbing as far as a second turning point, and machine settings are so adjusted in the turning points as to ensure a correct engagement angle and correct flank topography during the hobbing process, irrespective of the different bevel angles (α). The process combines the advantages of the known completing process, by which both flanks can be ground at the same time at the cost of imposing a particular wheel body geometry with conical teeth, with those of the known two-track process for grinding both flanks with a double grinding head, by which various additional correction factors can be introduced to optimise the flank shape for convex and concave flanks.