SU1468726A1 - Finishing and buffing device - Google Patents

Abstract

The invention relates to abrasive machining and can be used for finishing the planes and gentle spheres of large parts. The device contains a holder of parts made in the form of a face plate 1 installed with the possibility of turning, and the drive of orthogonal oscillations of the tool made of two mutually perpendicular wings 3 and 4 located on a common yoke 2 installed with the possibility of radial movements. The instrumental head I is located on the hinged suspension 12 with the possibility of its mechanized lifting. The software device controls the radial movement of the yoke 2 with the tool, taking into account the deviations of the surface shape. A laser interferometer is used to control the surface to be treated. The device contains seven electric motors and computers. 1 hp f-ly, 2 ill.

Description

FIG. g

The invention relates to abrasive machining and can be used for finishing the planes and gentle spheres of large parts.

The purpose of the invention is to expand the technological capabilities of the device, both in terms of the types of processing produced on it, and its accuracy, and in the dimensions of the parts being processed.

On the fit. 1 shows the proposed device, top view; in fig. 2 - its kinematic scheme.

The device comprises a part holder in the form of a face plate 1, connected via a two-stage gear mechanism with the electric motor Ml. Traverse 2 is connected with mutually perpendicular wings 3 and 4, installed with the possibility of mutually perpendicular movements along the axis of HIIM 5 and 6 mounted on the frame, and is in engagement with roller fingers 7 and 8. The latter are fixed with the possibility of radial movement on disks, vertical shafts 9 and 10, which are connected to gear motors. М2 and МЗ, connected to their frequency controller. (RF)

The tool head 11 with its own electric drive M4 is mounted on a narni suspension 12 with the possibility of raising and lowering with the help of a parallel-1-frame mechanism 13 from the M5 electric motor. He also presses the tool 14 to the surface to be machined through the elastic element 15 with adjustable force. Traverse can be moved to the radio. in relation to the faceplate 1 direction by means of the lead screw 1.6 from the electric motor MB.

A laser interferometer 17 mounted on a cantilever 18, which can move along an arc in a horizontal plane driven by an electric motor 7, is provided for operative control of the surface to be processed. - P1 console console 18 and faceplates 1. Motor sensors M1 and M7 connected to a computer, are used to determine the position of the shape deviation on the surface of the part.

During operation of the device, the rotation of shafts 9 and 10 from the M2 and MZ engines is converted by the rocker mechanisms 7-3 and 8-4 into the oscillatory movement of the yoke 2. The guides 5 and 6 hold the yoke in the horizontal plane, taking the load from yripyroi o item 15.

Depending on the frequencies set by the frequency controller according to the frequencies of the frequencies of the mutually perpendicular pp oscillations,

tool paths 14 moving along the surface of the part fixed on plate 1 can be varied. FIG. 1 shows the trajectories corresponding to the frequency ratio 1: 2; 2; 3 and 1; 1. In the general case, with more complex frequency ratios, the trajectories have a non-repeatable property, which contributes to an increase in the quality of processing.

0 At the same time, the faceplate 1 is rotated, and the traverse 2 is an additional radial movement from the Ml and MB engines so that tool 14 sequentially blocks the entire surface to be machined. However, in accordance with

 Computer-embedded software and man-in-memory data about the initial surface topography, the relative nonrela- sion of the traverse in radial mode is performed in polar coordinates with control based on shape deviations from flatness.

The device allows for other types of processing. For grinding, honing and polishing the tool 14 at an appropriate speed, the rotation from the M4 engine is reported (in the case of grinding, the M2 and MZ engines can be turned off). Depending on the nature of the macrorelief of the surface, the amplitudes of oscillations of the traverse 2 are set due to the magnitude

30 of the radial mismatch of the fingers 7– and 8. For the processing of spherical surfaces and their subsequent asphericization, unequal amplitudes are set (on the rocker 4 less) so that the contour of the distributed trajectory from the square turns into a narrow square. For better processing of the edge of the round part, the larger side of the rectangle should be directed tangentially to the edge, this causes the inclination 2 inclined at an angle of 45 °.

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Claims (2)

Invention Formula I. Polishing and polishing device containing a frame, a part holder, a drive of mutually perigundural oscillations of a scientific research institute of a tool, characterized in that, in order to expand technological capabilities, the part holder is designed as a face plate mounted for rotation, traverse mounted SO with the possibility of radial and mutually perpendicular movements along the guides mounted on the frame and connected with two mutually perpendicularly arranged wings. 55 2. The device according to claim. 1, characterized in that. that it is equipped with a software device associated with the drives of the radial movement of the tool and the rotation of the faceplate. Fie.7