SU1220770A2 - Vice - Google Patents

Description

The invention of mechanical engineering, in particular, devices for clamping workpieces on installation bases, is an improvement of the invention according to the author. St. Ke 990489.

The essence of the invention is to improve the reliability of clamping parts in the desired position by reducing the friction between the rubbing surfaces of the part and the vice and, accordingly, ensuring guaranteed delivery of the part to the installation bases.

FIG. 1 shows a vice, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - section BB in FIG. one; in fig. 4 — known vice with roller bearings on the lower basic element, top view; in fig. 5 is a section through BB in FIG. 3; in fig. 6 - section GG on fi | -. 2

The vice contains 2 side and 3 lower base elements in holes 1 1, roller 4, each of which includes a hollow cylindrical bushing consisting of two parts 5 and 6 with coaxial conical sockets 7 and 8 on the inner surfaces, the stop 9, the spring O, installed in the hole 1 and cooperating with the stop 9, the roller 11 with ball heads 12 at the ends, which are located in the conical sockets 7 and 8.

The axes 13 of the rollers 11 are arranged perpendicularly to the direction of movement of the diagonal wedge 14. The vice contains an i-also movable sponge 15 and a frontal base element 16.

The total force of the springs 10 of the roller bearings 4, which are located on the respective base elements, is chosen so that it is less than the force that presses the part to the corresponding base element.

The device works as follows.

Before clamping, the part is manually or installed by the operator on the roller supports 4 of the lower base element 3. Then a movable jaw 15 from a wedge 14 is applied to the part and a clamping force from a drive (not shown) is applied.

The diagonal wedge 14 under the action of the clamping force moves in the direction of the lower 3 and frontal 16-base elements and, due to the frictional forces between the wedge 14 and the part, moves the latter along the rollers 1 1 in the indicated directions.

In the process of final clamping of the parts; the roller bearings 4 under the action of the clamping force are sunk into the holes 1 of the base elements 2 and 3, thus ensuring the installation of the part along these base elements.

When the support 4 interacts with the part, the rollers 11 self-align on its surfaces due to the relative displacement of parts 5 and 6. Such a solution eliminates the point contact of the rollers with the clamped part.

After removing the clamping force, the supports 4 are returned by means of the springs 10 to the initial position.

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Fig 5

VNIIPI Order 517, 10 Circulation 1030 Subsidiary Subsidiary PPP “Patent, Uzhgorod, ul. Project, 4

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Claims (1)

VISES on avt. St. No. 990489, characterized in that, in order to increase the clamping reliability, holes are made in the lateral and lower base elements, the axes of which are perpendicular to the working surfaces of the base elements, and the vice is equipped with recessed roller bearings installed in the holes, each of which includes a hollow cylindrical sleeve, consisting of two parts mating along the generatrix, on the inner surfaces of which at one of the ends two coaxial conical sockets are made, a stop fixed on the inner surface of one of the parts and acting with its other part, a spring installed in the hole and interacting with the stop, a roller with ball heads at the ends that are located in the conical seats, and the axis of the rollers is perpendicular to the direction of movement of the diagonal wedge and parallel to the working surfaces of the corresponding base elements. FIG. 1>