RU2209U1 - QUICK CLAMP - Google Patents

Abstract

A fast clamp comprising a housing in which a screw is mounted in a threaded hole with a possibility of interaction with a clamping element, characterized in that the clamping element is mounted for translational movement along the axis of the screw and provided with protrusions, the screw being rigidly connected to the end cam and the cam protrusions mounted with the possibility of contact with the protrusions of the clamping element.

Description

Description of the utility model Quick-acting clamp.

9.

The utility model relates to mechanical engineering, and in particular to mechanisms for fixing workpieces in fixtures when machining on metal cutting machines. It will find wide application in the processing of workpieces on drilling, milling machines, on machine tools with program control and can be used in devices for assembling various components and mechanisms.

A number of threaded clamps are known, which allow a quick approach and retraction of the clamping element, threaded clamps are known with a bayonet approach and retraction, with a tilt or lock stop, etc .; a number of such constructions are given in the manual of A. Goroshkin Accessories for machine tools, M. MMGIZ, 1962, p. 149. The disadvantage of these threaded clamps is the slow movement of the clamp, for I revolution per thread pitch. Known screw clamp with left and right thread, also described in the reference A. Goroshkina Devices for metal-cutting machine tools, M., MA111GIZ, 1962. p.149, which allows you to move the clamp in half a turn by the value of a full turn.

This technical solution is the closest in technical essence and achieved effect to the proposed utility model and is chosen as a prototype for it. The disadvantage of a threaded clamp is the small amount of movement of the clamp using thread with a normal pitch, and the use of thread with a large pitch does not allow to securely fix the workpiece. The essence of the utility model is expressed in that the proposed clamp comprises a housing in which a screw is installed in a threaded hole, a clamping element mounted in the housing for translational movement along the axis of said threaded hole, and an end cam rigidly connected to the screw and in contact with the clamping tabs item. This embodiment of the device allows you to simultaneously move the clamping element with a screw thread and protrusions of the end cam, while the end cam provides only a quick feed of the clamp, and after the end of the feed of the clamp with the cam, the clamping element continues to move due to the screw thread and reliably fixes the workpiece.

FIG. Presents a diagram of a quick clamp in a clamped state;

figure 2 - in the expanded state;

on FIG.Z - diagram of a screw with a cam;

figure 4 is a diagram of the clamping element;

figure 5 is a section along BB.

A quick clamp consists of a housing pos. 1, in the threaded hole of which is installed a screw pos. 2, rigidly connected to the end cam pos. 3, an element-pos. 4, a return spring pos. 5 and a cover pos.

The clamp works as follows. When rotating the screw pos. 2 clamp receives, due to the thread, translational movement along the axis of the screw. The clamping element pos. 4 can have only translational motion along the screw axis; the cover pos. B does not allow it to rotate (section B-B). When the screw is turned, the clamping element moves quickly until it comes into contact with the workpiece. item 7, because end cam pos.Z is rigidly connected to the screw, and

f7 (F

its protrusions are in contact with the protrusion; clamping element, after which the workpiece is firmly fixed under the action of the screw thread. Upon reverse rotation of the screw, the spring pos. 5 returns to its original position.

The proposed clamp is widely used for securing workpieces on drilling, milling, copying, grinding and other machines and in devices for assembly production, it can be used in various mechanized and partially automated rigging with mechanical, hydraulic and other drives. The versatility of the clamp will expand the technological capabilities for its use in various types of work. Using a clamp will increase labor productivity and improve the quality of workpieces.

Claims (1)

A quick clamp comprising a housing, in the threaded hole of which a screw is arranged to interact with the clamping element, characterized in that the clamping element is mounted for translational movement along the axis of the screw and provided with protrusions, the screw being rigidly connected to the end cam, and the cam protrusions are installed with the possibility of contact with the protrusions of the clamping element.