Feed safety apparatus for movable member
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 18, 1983
Grant Date -
N/A
app pub date -
Feb 23, 1981
filing date -
Feb 29, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A feed safety apparatus for a movable member slidably supported on a stationary bed of a machine tool. A feed device moves the movable member at various speeds. A hydraulic cylinder is fixedly mounted on the movable member and includes a piston slidably received therein. A reference plate member is secured to the bed and operatively connected to the piston for permitting bodily movement of the hydraulic cylinder and the piston within a predetermined distance, but restraining movement of the piston beyond the predetermined distance to cause relative movement between the hydraulic cylinder and the piston. A fluid flow regulating device is disposed between the pair of cylinder chambers of the hydraulic cylinder for restrictively controlling relative movement between the hydraulic cylinder and the piston.
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