SU1016086A1 - Jig for machining parallel holes - Google Patents

Abstract

A CENTER FOR TREATING PARALLEL HOLES, comprising a housing with supporting devices and a conductor plate with guide sleeves and clamping devices, characterized in that, in order to improve the accuracy of the parallel arrangement of the holes to be machined, one of the supporting devices made in the form of a half-cylinder with a turning angle, in the form of a half-cylinder with a turning angle, the hole to be machined, one of the supporting devices made in the form of a semicylinder with a turning angle, the opening holes, one of the supporting devices, in the form of a half-cylinder with a turn, with a turn pattern, with a rotation axis, the position of the workpiece is in the form of a half-cylinder with a turn-out position, The second supporting and clamping devices are made in the form of hemispheres. (L O5 O 00 O5

Description

The invention relates to mechanical engineering, in part to machine tools, and can be used, for example, to drill, countersink and deploy parallel holes.

A conductor is known, comprising a housing with fixed supporting devices for mounting the workpiece and a conductor plate with guide bushings, which clamp the workpiece 1.

A disadvantage of the known device is that the presence of the misalignment of the bases of the workpiece during the use of fixed support devices, against which the part is pressed while fastening, is the elastic deformation of the part at which the holes are machined. After unfixing, the part returns to its initial, undeformed state, and the machined holes acquire non-parallel arrangement.

The purpose of the invention is to improve the accuracy of the parallel arrangement of the holes being machined.

This goal is achieved by the fact that in a conductor comprising a housing with supporting devices and a conductor plate with guide sleeves and clamping devices, one of the supporting devices is made in the form of a half-cylinder with a turning axis located perpendicular to the plane passing through the axes of the guide sleeves, and the second support and clamping devices are made in the form of hemispheres.

FIG. 1 shows the jig, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2

The conductor consists of a housing 1 carrying support devices 2 and 3. Support device 2 includes a base 4, on a cylindrical surface 5 of which a half-cylinder 6 is mounted. At the base 7 of a support device 3 on a spherical surface 8 a hemisphere 9 is installed.

A housing plate 10 is fixed to the housing 1, in which the guide bushings 11 and 12 are installed, as well as the pressure devices 13 and 14. The pressure device 13 includes a base 15, in which a spherical surface 16 is installed

hemisphere 17. The clamping device 14 includes a base 18, in which a hemisphere 20 is mounted on the spherical surface 19. In the housing 1 there are fixed 21 and movable 22 prisms. The movable prism 22 is moved by a screw 23. The rotation axis I-I of the half-cylinder 6 is located perpendicular to the plane passing through the geometrical axes P-II of the guide sleeve 11 and III-1P of the guide sleeve 12.

The workpiece 24 is supported on a half cylinder 6 and a hemisphere 9.

The conductor works as follows. The workpiece 24 is placed at one end on the half-cylinder 6, the other on the hemisphere 9. By turning the screw 23, the movable prism 22 is brought to the part 24, then moving the clamping devices 13 and 14 in the direction of the supporting devices 2 and 7 respectively the part 24

0 is fixed, interacting with the bottom with the semi-cylinder 6 and the hemisphere 9, and above with the hemispheres 17 and 20. In the process of fixing the part 24, the semi-cylinder 6 and the hemisphere 9 are rotated according to the location of the mounting bases 25 and 26 of the part 24, and

5, the hemispheres 17 and 20 during the clamping process are self-oriented according to the arrangement of the surfaces of the part on which the clamping is performed. As a result, the part is not deformed when clamping. After machining the holes 27 and 28, the clamping devices 13 and 14 are retracted to the initial (inoperative) position, the part 24 is released from fastening. Since there is no deformation of the part during fixing, a high accuracy of parallelism 27 and 28 is achieved.

g in detail 24.

The economic efficiency of the described conductor is ensured by increasing the accuracy of the location of the axes of the holes, since the workpiece is clamped by forces acting in the direction of the self-aligning supports without the deformation of the part. The removal of the base surfaces is also excluded, since the support and clamping elements of the clamping devices self-align according to the arrangement of the surfaces of the mounting and pressure bases.

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Claims (1)

CONDUCTOR FOR PROCESSING PARALLEL OPENINGS, comprising a housing with supporting devices and a conductive plate with guide bushings and clamping devices, characterized in that, in order to increase the accuracy of the parallel arrangement of the machined holes, one of the supporting devices is made in the form of a half cylinder with a pivot axis located perpendicular to the plane passing through the axis of the guide bushings, and the second supporting and clamping devices are made in the form of hemispheres. 9809101 OS Fig T>