Center-rotation type tailstock
AssigneeFutamura Kiki Kabushiki Kaisha
InventorsTadahiro Futamura, Satoru Yamamura, Masaya Satoh
Life of this patent
Estimating the term…
Abstract
In a center-rotation type tailstock, unavailable time due to replacement of parts such as bearings is shortened. A built-in hole is formed in a tailstock spindle. A center rotating mechanism unit is attachable to and detachable from the built-in hole. In the unit, a rotary shaft is supported in a tubular body by bearings. The rotary shaft is made enable a center to be attached. When replacing the parts in the unit attached to the built-in hole, the unit is detached from the built-in hole, and another center rotating mechanism unit incorporating new parts is attached to the built-in hole.
Claims20
A center-rotation type tailstock in which a tailstock spindle is movable back and forth and non-rotatable, the tailstock comprising:
- a structure for replacing a center rotating mechanism unit attached to the tailstock spindle;
- wherein
- a built-in hole is formed in the tailstock spindle and opened on a front end surface of the tailstock spindle;
- and the center rotating mechanism unit is made to be fitted in the built-in hole and attached,
- the center rotating mechanism unit comprises a tubular body and a rotary shaft, the rotary shaft is supported in the tubular body by bearings to be rotatable and non-movable back and forth relative to the tubular body, and the rotary shaft is made to enable a center to be attached thereto;
- and
- when replacing the center rotating mechanism unit attached to the built-in hole, the center rotating mechanism unit is detached from the built-in hole, and another center rotating mechanism unit is attached to the built-in hole.
Dependencies are inferred from the claim text.