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US 4,638,693 AGranted
Bar stock feeder
AssigneeCitizen Watch Co., Ltd.
InventorKenji Sugimoto
Life of this patent
Estimating the term…
Abstract
A bar stock feeder for an automatic lathe, comprises a cover tube provided adjacent a rear side of a spindle of the automatic lathe, and a rod guide tube is provided in the cover tube. A push rod is slidably mounted in the rod guide tube in order to feed a bar stock to the lathe. The push rod is moved by a chain driven by sprocket wheels. Lubricating oil is supplied to the rod guide tube for preventing the vibration of the bar stock during the machining operation.
Claims7
A bar stock feeder for a processing machine having a hollow spindle, comprising:
- first support means;
- cover means provided adjacent said hollow spindle and pivotally supported by said first support means;
- second support means;
- at least one rod guide tube supported by said second support means in said cover means and having a front end opening for passing a bar stock and a longitudinal slit;
- an elongated flexible member provided to be moved along said rod guide tube in the longitudinal direction;
- guide means for guiding said elongated flexible member;
- a push rod slidably mounted in said rod guide tube;
- a flag for operatively connecting said push rod to said elongated flexible member through said slit;
- means for moving said elongated flexible member to advance said push rod;
- said cover means being for covering the entirety of the rod guide tube, flexible member, guide means, and flag;
- lubricating oil passage means from an inlet formed in a rear portion of the rod guide tube to an outlet formed in a lower portion of the cover means passing through the rod guide tube;
- lubricating oil supply means for supplying lubricating oil to said rod guide tube passing through said passage means;
- and
- drain means connected to said passage means for returning lubricating oil to said supply means.
11 more elements
Dependencies are inferred from the claim text.