Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube
Patent
1994-04-11
1995-08-22
Larson, Lowell A.
Metal deforming
By deflecting successively-presented portions of work during...
To form helical coil or tube
72137, B21F 310, B21F 3502
Patent
active
054429447
ABSTRACT:
Disclosed is an auto-feed control mechanism for computerized numerically-controlled spring-forming machines. A gooseneck tool handle is fixedly connected at a middle point to a movable supporting arm and pivotly connected at a rear end to a fixing member, such that the movable supporting arm can be driven by a third motor to downwardly incline the tool handle relative to the fixing member. The fixing member is fixed to a tool-rotating disk which can be driven to rotate by a second motor so that the tool handle fixed thereto can be universally rotated. A first motor has a rotary shaft connected at one outer end to a threaded rotary shaft. The threaded rotary shaft passes through and engages with a threaded ring provided at a side wall of a tool holder such that when the first motor rotates, the threaded rotary shaft is driven to rotate inside the threaded ring and thereby causes the tool holder to move forward or backwarad. With these arrangements, one single tool bit can be used by the auto-feed control mechanism to complete the forming of a spring conveniently at reduced cost.
REFERENCES:
patent: 3393714 (1968-07-01), Ott
patent: 3493016 (1970-02-01), Ott
patent: 3734146 (1973-05-01), Nazyrov et al.
patent: 3908433 (1975-09-01), Helzer
patent: 4799373 (1989-01-01), Benton
Butler Rodney A.
Hertong Machinery Ent. Co., Ltd.
Larson Lowell A.
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