SU63985A1 - Machine vise - Google Patents

Description

Machine parallel vices have the disadvantage that their sponges usually tend to squeeze the clamped part upwards. Therefore, it is proposed that the jaws be rotatable around the axes located above the working surface of the jaws. Such a device causes the occurrence of a force during clamping of the product, which tends to turn the jaws of the vice downwards, as a result of which they not only do not squeeze the product upward, but, on the contrary, press it to the supporting surface of the vice.

The drawing shows a view of the side working parts of the vice from the side, with a partial cut.

As already indicated above, the aspiration of the sponges of the sliding machine vices of the existing system, when even pre-machined parts are clamped, to squeeze it upwards after milling or gouging gives non-parallel sides. To eliminate squeezing from a part vise, the worker routinely clamps the part beforehand, and then he upsets the part with a light tap, but this does not eliminate the squeezing of the part, and the face reduces the degree of non-parallelism.

To eliminate the above, in practice they resort to clamping parts that do not have protrusions for supporting the strap, for fastening to splitting, or with mounting fastening strips.

Both methods do not always guarantee parallel machining of planes, take a lot of time and significantly reduce productivity.

The proposed vise design eliminates the defects described above. Thanks to the presence of an eccentricity at the sponges 1 to the line of the zalisim created by their mounting pivotally on the axis x 2, as the compressive force P increases, the part presses c to the plane of the base with force -, where / is eccentricity, L-length of sponge. The presence of free rotation of the left jaw 1 around the pin 3 provides a already known way to clamp parts with non-parallel sides. In addition, this design ensures that the part even has a machined bevel of 5-6 °. The subject matter of the invention Machine vices, that is, the fact that the clamping jaws are installed pivotally around the horizontal axes located above the working surface of the jaws, in order to realize simultaneously - Lap p laprevenlii to supports, Noah surface.