US 11,806,798 B2
Method for machining bevel gears using an eccentrically-moved dressable cup grinding wheel
Rolf Schalaster, Wermelskirchen (DE)
Assigned to KLINGELNBERG AG, Zürich (CH)
Appl. No. 16/477,985
Filed by Klingelnberg AG, Zürich (CH)
PCT Filed Jan. 8, 2018, PCT No. PCT/EP2018/050359
§ 371(c)(1), (2) Date Jul. 15, 2019,
PCT Pub. No. WO2018/130495, PCT Pub. Date Jul. 19, 2018.
Claims priority of application No. 17151630 (EP), filed on Jan. 16, 2017.
Prior Publication US 2019/0344368 A1, Nov. 14, 2019
Int. Cl. B24B 53/07 (2006.01); B24B 53/075 (2006.01); B24B 53/085 (2006.01); B24B 49/18 (2006.01); B23F 5/10 (2006.01); B23F 23/12 (2006.01); B24B 53/06 (2006.01)
CPC B23F 5/10 (2013.01) [B23F 23/1225 (2013.01); B24B 49/18 (2013.01); B24B 53/06 (2013.01); B24B 53/07 (2013.01); B24B 53/075 (2013.01); B24B 53/085 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
machining a bevel gear workpiece using a grinding machine including
a tool spindle configured to receive a cup grinding wheel with an abrasive surface and to rotationally drive the cup grinding wheel around an axis of rotation of the tool spindle, wherein the tool spindle comprises an eccentric drive;
a dressing spindle configured to receive a dressing tool configured to dress the cup grinding wheel, and to rotationally drive the dressing tool around an axis of rotation of the dressing spindle, and
a workpiece spindle configured to receive the bevel gear workpiece and to rotationally drive the bevel gear workpiece around an axis of rotation of the bevel gear workpiece;
wherein the machining step includes
a) rotationally driving the cup grinding wheel around the axis of rotation of the tool spindle at a first speed,
b) rotationally driving the dressing tool around the axis of rotation of the dressing spindle at a second speed, and
c) dressing the cup grinding wheel using the dressing tool at a predetermined, fixed speed ratio between the first speed and the second speed, wherein the fixed speed ratio defines a ratio of (1) the first speed to the second speed or (2) the second speed to the first speed;
and, after steps (a), (b), and (c):
i. eccentrically rotationally driving the cup grinding wheel around the axis of rotation of the tool spindle at a first machining speed using the eccentric drive, and
ii. grinding machining the bevel gear workpiece using the cup grinding wheel.