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US 5,098,073 AGranted
Two-station vise with double-threaded screw
AssigneeKurt Manufacturing Company, Inc.
InventorJohn O. Lenz
Life of this patent
Estimating the term…
Abstract
A machine vise holds two parts against a center mounting block, and has simultaneously moving jaws slidable on a vise body toward opposite sides of the center jaw for clamping. One of the jaws is driven through a torque limiting clutch to the drive screw to provide a preload on one of the parts, after which the clutch releases for final, high pressure tightening.
Claims11
A vise assembly comprising a body, said body having opposite ends, and means for guiding movable vise jaws thereon;
- a fixed vise jaw mounted on said body between said opposite ends, said fixed jaw having oppositely facing fixed jaw surfaces;
- a pair of movable jaws mounted on said body, each of said movable jaws having a jaw surface facing one of the fixed jaw surfaces, and each of said movable jaws being movable toward and away from the fixed jaw, each of said movable jaws including an internal threaded bore, said bores being in alignment with each other and having opposite hand threads;
- a vise screw having at least two spaced threaded sections of opposite direction lead threadably mating with the internal threaded bores of the movable jaws, respectively, whereby upon rotation of the vise screw about a central longitudinal axis the movable jaws will simultaneously move toward the fixed jaw when the vise screw is rotated in a first direction, and move away from the fixed jaw when the vise screw is rotated in a second direction;
- and
- clutch means for drivably coupling one of the threaded sections to the vise screw, whereby when a load on the movable jaw being driven by the one threaded section exceeds a certain level, the clutch means releases the drive coupling to permit the one threaded section to stop rotating with the screw, while being retained from movement in direction of the longitudinal axis of the screw while the other threaded portion can be rotated by rotating the screw relative to the one threaded section for clamping of both of the movable jaws against the fixed jaw.
2 more elements
A vise assembly comprising a vise body, said vise body having opposite ends, and means for guiding movable vise jaws thereon;
- a fixed vise jaw mounted on said body between said opposite ends, said fixed jaw having oppositely facing fixed jaw surfaces;
- a pair of movable jaws slidably mounted on said body, each of said movable jaws having a jaw surface facing one of the fixed jaw surfaces, and each of said movable jaws being movable toward and away from the fixed jaw, each of said movable jaws having a drive connection;
- a drive member having at least two spaced drive sections to drivably mate with the drive connections of the movable jaws, respectively, whereby upon operation of the drive member in each of two opposite directions of operation the movable jaws will simultaneously move toward the fixed jaw and away from the fixed jaw, respectively;
- and
- clutch means for releasably drivably coupling one of the drive sections to the drive member, whereby when a load on the one movable jaw being driven by the one drive section exceeds a selected force level, the clutch means releases the driving of the one jaw but prevents movement of the one jaw relative to the drive member in direction away from the fixed vise jaw and the other drive section will continue to apply force to move the movable jaws together in direction toward the fixed jaw as the drive member is continued to be operated.
2 more elements
A vise assembly comprising a body, aid body having opposite ends, and means for guiding movable vise jaws thereon;
- a fixed vise jaw fixedly mounted on said body;
- a pair of movable jaws mounted on said body, each of said movable jaws having a jaw surface facing opposite sides of the fixed jaw, and each of said movable jaws being movable toward and away from the fixed jaw,
- a vise screw having at least two spaced threaded sections of opposite direction lead threads to threadably mate with threaded members of the movable jaws, whereby upon rotation of the vise screw the movable jaws will simultaneously be driven by the threaded sections to move toward the fixed jaw when the vise screw is rotated in a first direction, and away from the fixed jaw when the vise screw is rotated in a second direction;
- and
- clutch means for drivably coupling one of the threaded sections to the vise screw, said clutch means releasing the drive coupling of the one threaded section at a desired torque level on the vise screw to permit the vise screw to be rotated without driving the one threaded section.
2 more elements
Dependencies are inferred from the claim text.