SU1255283A1 - Arrangement for supporting nonrigid cylindrical parts - Google Patents

Abstract

The invention relates to mechanical engineering and can be used when machining on turning lathes fS non-rigid cylindrical parts. The purpose of the invention is to improve the machining accuracy by eliminating local deformations of the walls from the radial components of the cutting forces and expanding the technological capabilities of the device. The device comprises a housing 1 with rotating supporting elements made in the form of tapered rollers 9 installed in the housing with the possibility of movement along their axes by means of springs 14. The supporting elements are placed in crackers 5 installed with the possibility of tuning radial movement with a screw 18. 2 or . fS 5 1 Mi I G Q & P . f

Description

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The invention relates to mechanical engineering and can be used in the processing of non-rigid cylindrical parts on lathes.

The purpose of the invention is to increase accuracy by eliminating the deformation of the walls of the part from the radial component of the cutting force.

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

The device comprises a housing 1, mounted on the guides of the machine 2 with the aid of a strip 3 and a bolt 4. In housing 1, rusks 5 are placed with the possibility of movement in radial directions. In rusks 5, axles 6 are placed on sleeves 7, on which rotatably Bearings 8 are fitted with supporting elements — tapered rollers 9. Thanks to the implementation of supporting elements in the form of tapered rollers 9, it becomes possible to place the housing 1 with supporting elements in the cantilever part, i.e. from the end of the part 10. In this case, the cantilever part of the part 10 will be support ats podzhimats and with the end face, and provided free access TOOLS FOR 11 and 12 into the zone for cutting processing as the outer and inner surfaces. The bearings 8 are fixed on one side by the covers 13 on which the springs 14 rest. When changing the installation diameter of the part 10 or the pressure on the spring-loaded tapered rollers 9, the latter will move along axis 6 to the right or left, which provides support for the axis of rotation of the part 10 along the axis rotation of the spindle 15. The workpiece 10, fastened at the other end in the chuck 16 of the spindle 15, is mounted on the conical surfaces of the rollers 9. The part is machined with tools 11 and 12, respectively, for length. internal and external surfaces placed on the caliper 17.

For processing parts of other types of sizes, the crackers 5 are adjusted in the radial direction by screws 13, and fixed by screws 19.

The device works as follows.

Item 10 is clamped in the chuck 16. The housing 1 with the supporting elements is moved until it is set in contact

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surfaces with a cantilever end of the workpiece 10, take it up to a certain preload of the spring 14. At the same time (supporting elements), the tapered rollers 9 contact the tapered surfaces with the workpiece 10 and at the same time will support the cantilever part of the cantilever , ensuring its reliable installation.

After installation of the part 10, the spindle 15 and, accordingly, the part 10 is driven into rotation. When the part 10 rotates due to the error of its shape, the part radii at the points of contact with the mounting surfaces may be different. When this tapered rollers 9, mixed. along their rotation axes, the axis of rotation of the part 10 along the axis of rotation of the spindle 15, i.e. with increasing radius, moving to the right, and with decreasing - to the left. Then, moving the caliper 17 with the cutters 11 and 12, the plunging and simultaneous machining of the outer and inner surfaces of the part 10 or their sequential processing are performed. After removing the layer of material from the outer surface, the tapered rollers 9 under the influence of compressed springs 14 instantaneously move to the left side, compensating for a reduction in the installation diameter.

After processing is completed, the caliper 17 with cutters 11 and 12 is retracted to its original position, by moving the body i to the other side, the console part of the part 10 is released. Part 10 is removed after unclamping the cartridge 16.

The adjustment to a size or other diameter is done with a screw 18, with which the crackers 5 can be moved in the radial direction. And the final fixation of the position of the support elements 9 is carried out by a screw 19.

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Claims (1)

Invention Formula The device for supporting non-rigid hydraulic parts, in the case of which support elements are located with axial displacement, is distinguished by the fact that, in order to increase accuracy, 55 by avoiding deformation of the part walls from the radial component with the possibility of adjusting Invention Formula The device for supporting non-rigid cylindrical parts, in the case of which the supporting elements are located with axial movement, is distinguished, in order to increase accuracy by eliminating the deformation of the walls of the part from the radial component of the cutting force. tuning 312552834 radial movement on dimensional elements, filled in the form of crackers, in which support-spring-loaded tapered rollers are located, 1c eleven  vi Figg Editor S.Pekar Compiled by T. Kravchenko Tehred I. Veres Proof-reader A. Obruchar Order 4750/11 Circulation 1001Subscription VNIIPI USSR State Committee Lo affairs of inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4.