Tail spindle of lathe including oil hydraulic circuit for thrust compensation
AssigneeHankook Machine Tools Co., Ltd.
InventorsDong Seog KIM, Han Gil JANG
Life of this patent
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Abstract
The present invention relates to the trail spindle of a lathe including an oil hydraulic circuit for thrust compensation, wherein lathe turning operations on a processing object can be performed always accurately by preventing the processing object from being swung and the shape of the processing object from being deformed, in such a manner that necessary thrust is generated by using an oil hydraulic cylinder and a pressure reducing and relieving valve without using the existing method of moving a tail spindle using a screw and the oil hydraulic circuit automatically performs thrust compensation (i.e., maintains constant thrust) according to a change in the length of the processing object during lathe turning operations.
Claims5
A trail spindle of a lathe including an oil hydraulic circuit for thrust compensation, the trail spindle comprising:
- a cylinder rod 10 integrally coupled to a rear of the tail spindle 2-1;
- an oil hydraulic cylinder 11 configured to comprise a piston 11-1 coupled to a rear of the cylinder rod 10;
- and
- the oil hydraulic circuit configured to receive and discharge a hydraulic oil through a hydraulic oil inflow port 12-1 and a hydraulic oil exhaust port 12-2 of the oil hydraulic cylinder 11,
- wherein the tail spindle 2-1 moves a processing object forward or backward along with the cylinder rod 10 by means of a movement of the piston 11-1 of the oil hydraulic cylinder 11.
Dependencies are inferred from the claim text.