Apparatus for machining double enveloping worm shaft
AssigneesSung Jin Tech Co., Ltd., Gyu Bong Han
InventorGyu Bong HAN
Life of this patent
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Abstract
Provided is an apparatus for machining a double enveloping worm shaft, and more particularly, to an apparatus for machining a double enveloping worm shaft, which cuts threads on a workpiece having a double enveloping body having a central portion formed therein in a concave arc-shaped outer circumferential surface and in which teeth of the machined double enveloping worm shaft are cut to a uniform depth while being always directed toward a central axis of a worm wheel, machining precision of the double enveloping worm shaft is increased, and thus post-machining is not required.
Claims4
An apparatus for machining a double enveloping worm shaft, the apparatus comprising:
- a bed (10) including a main shaft (11) for rotating a workpiece (2) having a double enveloping body (2a) and a tailstock (12) for fixing the workpiece (2) to the main shaft (11);
- a rotation unit (20) provided with a rotation table (21) which rotates in a left-right direction and on which the bed (10) is mounted;
- an alignment unit (30) that aligns the bed (10) in a front-rear direction and the left-right direction so that the workpiece (2) is spaced apart from and matched with a central point of the rotation table (21)-by ;
- and
- a cutter (S) fixed to a central side of the rotation table (21) to face a circular arc cutting surface of the double enveloping body (2a),
- wherein, in a state in which the circular arc cutting surface of the double enveloping body (2a) has a concentric circular structure with a rotation path of the rotation table (21) with respect to the central point of the rotation table (21), while the workpiece (2) revolves at an outer edge of the cutter, a thread of the double enveloping worm shaft (1) is machined in the circular arc cutting surface of the double enveloping body (2a).
Dependencies are inferred from the claim text.