Turning – Process of turning
Patent
1981-03-24
1984-01-03
Garrett, Robert E.
Turning
Process of turning
82 27, 82 33R, 82 38A, 414 17, 414 18, B23B 1300
Patent
active
044236514
ABSTRACT:
A hydraulically operated bar stock feeder having a hydraulic circuit in which a hydraulic pump drives a hydraulic motor which in turn operates the bar feeder carriage. The hydraulic pump operates a hydraulic cylinder with a designed live center cup attached to the end of the cylinder rod. The hydraulic circuit has a control valve with hydraulic detent which will lock in a forward or backward position. While the control valve is locked in forward position, fluid is allowed to go to a relief valve at the hydraulic motor on the carriage. The relief valve reduces the pressure going to hydraulic motor and deceleration valve. When the carriage reaches the end of track the deceleration valve is depressed, which, through another relief valve at a lower pressure starts the cylinder rod moving outward. Both the cylinder and carriage motor are able to set (not move) under pressure and will start automatically when the lathe chuck is open. When the cylinder is fully extended, then the work piece will be used up; thus to return the system to an initial starting condition, manually reverse the hydraulic valve and the cylinder rod will retract and also the hydraulic motor will retract to a normal starting position. The live center with its unique cup design works in conjunction with an interlocking retainer shield. This design maintains centricity eliminating bar stock vibration when lathe chuck is turning. As the bar stock length decreases to a point allowing a shield sleeve to come in contact with the lathe tube, the shield automatically stops, the live center continues into the lathe tube with the bar stock. The live center cup expands automatically when entering the lathe tube maintaining centricity of the bar stock.
REFERENCES:
patent: 2463385 (1949-03-01), Holohan
patent: 2572741 (1951-10-01), McCoy
patent: 2793041 (1957-05-01), Barbier et al.
patent: 3070239 (1962-12-01), Lanphere
patent: 3985221 (1976-10-01), Lueders
patent: 4068545 (1978-01-01), Scheler
Garrett Robert E.
Greigg Edwin E.
Hardee Manufacturing Company, Inc.
Kearns Jerry
LandOfFree
Bar feed centrically guiding device for lathe apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bar feed centrically guiding device for lathe apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bar feed centrically guiding device for lathe apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1027843