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摘要

The device relates to clamping devices and can be used to fasten, support or position the workpieces to be in working position under various types of processing.;The high-speed vice includes a housing with a fixed clamping jaw, a movable clamping jaw and a power screw, the movable clamping jaw being fixed to a movable base located in the housing cavity, coaxial through threaded holes are provided in the housing wall and a movable base, the diameter of the through threaded hole in the movable base is smaller than in the housing wall, the thread in the through threaded hole in the movable base is left, and in the through threaded hole in c enke right housing, a portion of the rod of the power screw from its end is threaded corresponding to the threaded through-hole in the movable base and the force from the head of the screw - the respective through a threaded opening in the housing wall.;The device works as follows.;Before you start, the quick-acting vise is in the unclamped state. On the movable base, the clamping piece is set (not indicated), after which the power screw is rotated clockwise. At the same time, a part of the right-threaded power screw rod is screwed into the through threaded hole in the housing, and at the same time the left-threaded screw portion of the power screw is turned out of the through threaded hole in the movable base. The movable base with the movable clamping jaw fixed on it is moved along the axis of the power screw by a distance equal to the sum of the steps of the left and right threads on different parts of the propeller rod per each revolution. Rotation of the power screw is continued until the clamping piece is securely clamped between the clamping jaws of the high-speed vice. After that, the necessary processing of the clamping part is performed. At the end of the treatment, the power screw is rotated counter-clockwise, while the mobile base moves back with a movable clamping jaw fixed to it. The power screw is rotated until the high-speed vice is brought into its original unclamped state, the clamping piece is removed from the movable base, after which the quick-acting vice is again ready for operation.;The claimed device is simple in manufacture and operation and allows significantly increasing the speed of movement of the movable clamping jaw when the clamping is clamped and released.