SU1333551A1 - Abrasive reamer - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular to tools for finishing precision holes. The purpose of the invention is to improve the performance of setting the instrument to a predetermined size. For this purpose, the regulating elements 5 and 6 are interconnected by a pull 11, and pockets 15 are connected on the surface of the conical mandrel 1, which is in contact with the deformable sleeve 2, and connect. channels with external, -, source of fluid pressure. By acting on the pull 11, the adjusting elements 5 and 6 move synchronously with the deformable sleeve 2, in this way the adjustment takes place. On the outer surface of the deformable sleeve 2. applied abrasive material 3. 3 Il.

Description

The invention relates to mechanical engineering technology and can be used in diamond abrasive finishing operations of precision holes.

The purpose of the invention is to increase productivity and provide easy configuration, abrasive scanning on. preset size.

The goal is achieved by the fact that in an abrasive scan containing a conical adjustment, a deformable sleeve with abrasive 1 and cutting elements attached to it and adjusting devices located on both sides of the deformable sleeve are connected between each other. A hydrostatic pockets connected by channels with an external source of fluid pressure are made on the surface located in the conical mandrel, and on the surface of the correction in contact with the deformable sleeve.

FIG. 1 shows an abrasive scan, longitudinal section; in fig. 2 is a section A-A in FIG. 1; in fig. 3 shows a section BB in FIG. one.

 An abrasive sweep contains a conical mandrel 1, on which a deformable sleeve 2 is put on, on the outer surface of which the abrasive material 3 is fixed, performs the same role (cutting elements). elements 5 and b, connected by pins. 7 and 8 with nuts 9 and 10, located on the threaded sections of the gland 11, Tg 11 has the ability to rotate. To drive the rotation, there is a square shank 12 or a special machine mechanism ( not shown.) Axial movement of t and 11 prep m CTByioT pins 13 in contact with the ring groove of rod 11. So that when turning rod 11, there is a nut 10; it does not rotate, a key 14 is applied, pockets 15 are made connected by channels 16, cavity 17, groove 18, cavity 19 through a fixed collector 20 with an external source of fluid pressure (not shown). This source is connected to the opening 21 of the collector 20,

To create tightness, a cup 22 is rigidly attached to the end of the conical mandrel 1, and

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five

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five

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In places of the mandrel, ti gi 11 and nuts 9, o-rings 23 are installed. The abrasive sweep is fixed by its upper conic shank in the spindle 24 of the cutting machine.

An example of the location of the hydrostatic pockets 15 in the cross section is shown in FIG. 2, the number of channels in the longitudinal section depends on the sleeve length — one hydrostatic pocket is recommended for every 30-40 mm length.

The setting of the abrasive scan for a given diameter is made in the following sequence.

Claims (1)

Do not remove the tool from the machine, supply fluid from an external pressure source to the hole 21, from where it enters the pockets 15, and radial deformation of the sleeve 2 occurs, oil on the film is formed beneath the surface of the sleeve, due to which friction forces decrease dramatically. After that, they begin to rotate the tug 11 either by the square shank 12 or by the upper end of the special machine mechanism. When rotating the nuts 9 and 10, start stirring, axially along the threaded sections of the rod 11, and using pins 7 and 8 synchronously move the adjusting elements 5 and 6, and with them the deformable sleeve 2, After the movement of the sleeve 2 is completed, the fluid pressure is released - the tool is ready for operation, the tool diameter is adjusted to 0.005-0.04 mm more than the bore hole diameter, the tool is given a rotational and translational motion, and in one or three double strokes the allowance is removed and an exact hole. Invention Formula An abrasive scan comprising a conical mandrel with a deformable sleeve placed on it, on which the abrasive material is fixed, and control elements located on both sides of the deformable sleeve, which in order to improve performance, the sweep is equipped with located inside the conical mandrel and kinematically connected to the regulating elements, and on the outer surface of the mandrel there are pockets with radial through channels designed to supply the working fluid, Fig.Z Editor E. Kopcha Compiled by N. Ermakova Tehred V. Kadar Proofreader G. Reshetnik Order 3911/16. Circulation 714 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4