Feed mechanism for a machine tool
AssigneeToyoda Koki Kabushiki Kaisha
InventorAkiyoshi Kobayashi
Life of this patent
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Abstract
A feed mechanism for a machine tool having an improved stop mechanism which includes a movable stop, a stationary stop, and a rotatable control member. The stationary stop is located on a rotational path of the movable stop which is freely rotatable about a handle shaft. The control member, which can be rotated together with the handle shaft, is adapted to rotate the movable stop together therewith except through a predetermined angular extent, such that the handle shaft for feeding a movable unit of the machine tool may be rotatable more than the movable stop by the predetermined rotational extent.
Claims8
A feed mechanism for a machine tool comprising:
- a shaft rotatable for supplying a feed movement to a movable unit of said machine tool in a machining operation;
- drive means capable of reversibly turning said shaft;
- a ring member rotatable together with said shaft and provided with a cut-out portion;
- a movable stop rotatable in axial alignment with said ring member and engaged within said cut-out portion for permitting a relative rotation therebetween through a predetermined rotational extent;
- and
- a stationary stop fixedly provided on the rotational path of said movable stop for restraining one end of said ring member by interference with said movable stop, said predetermined rotational extent being defined to be more than the sum of widths of said movable stop and said stationary stop so that said shaft may be turned within a range of less than 2 revolutions.
Dependencies are inferred from the claim text.