Chucks or sockets – With fluid-pressure actuator – Pneumatic type
Patent
1992-12-07
1996-05-07
Bishop, Steven C.
Chucks or sockets
With fluid-pressure actuator
Pneumatic type
279 412, 279121, B23B 3116, B23B 3130
Patent
active
055138608
ABSTRACT:
The invention concerns an arrangement for clamping a bar of material. Such arrangement includes: clamping jaws (MS, MS') guided in a radial direction relative to the bar and adapted to take up two distinctive radial positions referred to as closed and open in order to clamp and to release the bar (B), a jaw closing mechanism (MF, MF') adapted so as to provide the jaws with a grasping force intended to assure clamping of the bar (B), return means (MR) for urging the jaws towards their open position and to assure release of said bar (B), and control means (MP) capable of controlling the operation of the closing mechanism (MF, MF') and the operation of the return means (MR) by a motion of translation substantially coaxial to the bar (B) in order to control respectively the closing and opening of the jaws, such control means (MP) being freely mounted for rotation relative to the closing mechanism (MF, MF'), while such mechanism (ME, MF') is entirely subjected to the rotational motion of said jaws (MS). This arrangement is intended to fit out the headstock of a machining lathe, for example of the automatic type.
REFERENCES:
patent: 1099724 (1914-06-01), Schlachter
patent: 1181844 (1916-05-01), Church
patent: 4349207 (1982-09-01), Fink
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