Threaded – headed fastener – or washer making: process and apparat – Material supply feeder or distributor
Patent
1997-11-05
1999-12-21
Larson, Lowell A.
Threaded, headed fastener, or washer making: process and apparat
Material supply feeder or distributor
470 57, 470110, 470177, 470180, B21H 900
Patent
active
06004215&
ABSTRACT:
A fastener forming apparatus comprises a positive stop that prevents workpieces from overshooting the end of a forming stroke. A workpiece transfer mechanism transfers one unformed workpiece at a time into a workpiece gripper and drives completed workpieces out of the workpiece gripper and onto an exit path. A compound hydro-pneumatic cylinder moves the gripper and one workpiece at a time downward into contact with a rotating forming tool. A knurled ring is adjustably supported on a threaded portion of a lower piston of the hydro-pneumatic cylinder in a position to contact a stationary stop surface when the workpiece gripper and tool reach the end of the forming stroke, halting the downward motion of the workpiece. The ring also actuates a lower limit switch at the stationary stop surface which causes the reciprocator to reverse direction. The forming tool includes a tool adapter head that holds various forming implements such as cutting blades or drill bits. The head also accommodates broachers and reamers, in which case a precision logic control detects and rejects defective workpieces that have no holes to broach or ream.
REFERENCES:
patent: 2273783 (1942-03-01), Irwin
patent: 2591285 (1952-04-01), Overly
patent: 2843861 (1958-07-01), Gandy
patent: 2919632 (1960-01-01), Newstead et al.
patent: 3097378 (1963-07-01), Meyercordt et al.
patent: 3146471 (1964-09-01), Edmondson
patent: 3200426 (1965-08-01), Barr
patent: 3548712 (1970-12-01), Dzus et al.
patent: 3596301 (1971-08-01), Haines
patent: 3638260 (1972-02-01), Brown et al.
patent: 3786527 (1974-01-01), Morton et al.
patent: 3978758 (1976-09-01), Bright
patent: 4058864 (1977-11-01), Morland
patent: 4184217 (1980-01-01), Dohi
patent: 4241468 (1980-12-01), Burchell
patent: 4900201 (1990-02-01), Danton et al.
patent: 5577868 (1996-11-01), Chen
patent: 5636541 (1997-06-01), Castricum
Fastener Technology International, Apr./May 1997, p. 51 Cinco Industries, Inc, "High Speed Shave Pointing Machines".
Custer Dennis F.
Linthorst Jan A.
Marchionni Ronald W.
Morath Lawrence A.
L & M Machinery & Manufacturing
Larson Lowell A.
Tolan Ed
LandOfFree
Fastener forming machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fastener forming machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fastener forming machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-500197