Chuck mounting arrangement

Details Chuck mounting arrangement Chuck mounting arrangement

1987-11-23

1989-05-30

LaRoche, Eugene R.

Turning

Lathe

Headstock

279110, B23B 1902, B23B 522, B23B 534

Patent

active

048339555

ABSTRACT:
A chuck mounting arrangement includes a chuck mounting unit fixed to the head of a spindle of a lathe and having a plurality of jaws and a scroll plate for radialy moving the jaws inwardly and outwardly. A power chuck selected from various types is inserted into the chuck mounting unit so that its adaptor will be clamped by the jaws. The scroll plate is then turned manually to move the jaws inwardly into engagement with the recessed portion formed at the rear of the adaptor. Thus the power chuck is fastened to the spindle. A drawbar mounted in the hollow spindle is provided at its front end with a joint member having its front end splitted into a plurality of joint pieces which are adapted to spread open when moving forward with their own resilience and to be pushed inwardly by a clamping sleeve provided therearound when being retracted. When the power chuck is fixed to the spindle by the chuck mounting unit, the joint pieces grip a chuck control shaft projecting from the rear end of the power chuck. The drawbar is then retracted to pull therewith the control shaft, thus moving the chuck jaws linked with the control shaft inwardly to hold firmly the work to be machined.

REFERENCES:
patent: 2760781 (1956-08-01), Mann
patent: 3868886 (1975-03-01), bondie

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