| 摘要 |
A low-cost, keyless chuck has a body member having a threaded shaft and an integral circular plate portion with three angular disposed apertures the axes of which converge on the chuck axis of rotation. A hollow, stainless steel cone member is crimped to the periphery of the plate portion to provide an inside guide surface for three jaw members disposed in respective apertures. A nut with captured beveled washer and rotatable jaw member retainer is threaded to the shaft, and the jaw member ends distant the work-piece-gripping ends are connected to the retainer is used to advance and retract the jaw members. A plastic nut-actuating sleeve protectively covering the nut assembly and the jaw members is splined to the nut and rotatably carried by the cone member. The body member is formed by upsetting or cold heading a rod, and the cone member is formed by deep drawing sheet material.
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