SU531710A1 - Vice with a bilateral clip of preparation - Google Patents

Description

one

The invention relates to the field of mechanical engineering and can be used in a vice with a two-sided clamping of the workpiece, for example, milling and cutting machines.

A vice is known that provides the clamping of the workpiece with two pairs of jaws, the movable of which have their own individual drives and move independently of each other, while the stationary ones are rigidly fixed on the frame.

The closest to the described invention to the technical essence and the achieved result are a vice with two pairs of clamping jaws, in which the moving jaws are rigidly interconnected and have a common drive, and the fixed ones are rigidly fixed on the frame.

The said vices do not provide guaranteed double-sided clamping of bent blanks and with a modified cross section geometry.

The aim of the invention is to provide clamping both bent and with a modified geometry of the cross section of the blanks.

To do this, in the proposed vice, one of the movable jaws is mounted in the other with the possibility of relative movement during the clamping process with the help of an elastic element and shifted in the vertical plane by the amount of permissible maximum values of the geometric faults of the cross section and curvature of the blanks.

FIG. 1 shows the kinematic

the scheme of the vice at the time of clamping the workpiece; on

FIG. 2 - kinematic scheme of clamping

sponges in the off position; in fig. 3 -

the same in the working position.

The vice with double-sided clamping of the workpiece consists of moving jaws 1 and 2. Sponge 1

installed with the ability to move in the guides 3 racks 4 of the machine by means of the screw 5, the handwheel special nut 6 through the double-arm lever 7, which interacts with the hydraulic rod of the hydraulic cylinder 8. In the guides

9, the sponge 1 is movable to overcome the elastic force of the elastic element 10 and the sponge 2 is placed.

Fixed - sponges 11 and 12 are installed on the table of the machine. Moving jaws 1 and 2 and

fixed 11 and 12 are installed in such a way that in the non-working position the clamping surface 13 of the jaw 1 is separated from the plane

14 clamping jaw 2 on the value of H-5, and in the working position on -S, where S is the absolute value of the maximum geometrical errors of the cross section of the workpiece

15 and curvature.

Vices work as follows. The workpiece 15 is installed on the fixed jaws And and 12. The sponge 1 moves in the guides 3 from the action of the hydraulic cylinder rod 8 through the double-arm lever 7, the handwheel special nut 6 and the screw 5. The sponge I, moving in the guides 3, carries along the movable sponge 2 , the clamping surface 14 of which is first in contact with the workpiece 15. The movement of the jaw 1 continues until it is completely pressed against the clamping surface 13 of the blank against the fixed jaw 11. At the same time, the elastic element 10 deforms and the jaw 1 moves relative to the jaw 2.

Thus, the workpiece is guaranteed to be sandwiched between the surfaces of the fixed jaws 11 and 12 and the movable 1 and 2, regardless of the curvature and geometrical errors of the cross section.

Claims (1)

Invention Formula Vice with two-sided clamping of the workpiece on the machine, for example, milling-cutting, containing kinematically interconnected stationary and moving from the drive sponge, characterized in that, in order to clamp both the bent and the modified cross-sectional geometry of the workpieces, one of the The jaws are mounted in another one with the possibility of relative movement in the process of clamping with the help of an elastic element and are displaced in the vertical plane by the amount of permissible maximum values of the aforementioned errors. 15 at ig.1 / 2  // U // 7 //// // 7 /// 7 // 7 FIG. 2 FIG. J