SU984815A1 - Former device - Google Patents

Description

The invention is intended for machining parts along a contour delineated by two intersecting cimis with circular arcs of equal radius, for example, for cutting with rollers or for sharpening the blade with a bayonet spade.

A copier is known, which comprises a copier with a closed-loop profile and a carriage for securing the workpiece l.

A disadvantage of the known device is the impossibility of using for machining an end tool, such as a milling cutter; without additional control of the location of its end tangentially to the profile.

The purpose of the invention is to expand the technological capabilities of the device.

The above objective is achieved in that the carriage is provided with three rollers arranged at the apexes of an equilateral triangle for interacting with a cam, the profile of which is made with sections of arcs of circles, the first of which is drawn with an arc. radius

R ;, 7 a,

the second is an arc of radius. R a

from the point lying in the middle of the first segment, and the third - concentric to the first radius

R, - / I

 a-sin bo

ten

where a is the distance between the rollers.

FIG. 1 shows a view of a copier with rollers located in it in FIG. 2 - device, transverse time15 res.

The device comprises a base 1 with a cam 2 fixed on it, formed by intersecting sections A, Ni C. carriage 3, with axis 4 and rollers 5-7 mounted on it, axis 4 located at distances x equal to the radius of section A, the center which lies in the middle of section B. On the carriage 3, a 25 method is installed to secure the workpiece (not shown).

The complete machining of a part mounted in the fixture on the carriage 3 is carried out when the carriage 3 is turned by 180. For SToro, the carriage 3

Claims (1)

30 rotate relative to the stationary tooling portion located in the zone (not shown; so that the rollers 5 and 6 roll over section A until the roller 6 stops against the wall of section B. The axis of the roller 7 is fixed because it is located in the center of curvature A and the roller 5 moves to position D. Then the carriage 3 is turned to move the tool to another part of the workpiece, while the rollers 7 and b roll over section B until the roller 7 stops in the sides of section A, and roller 5 from position D rolls in before section C. The center of rotation of the carriage is at the intersection of sections of the profile of the workpiece (in the center of curvature of section BJ. Then rollers 5 and 7 roll over section A, and roller 6 is fixedly located in the center of rotation on section B. Turning of carriage 3 and The treatment is completed when the RR5 5 is abutted into the wall of the section B. The processed part is removed, a new one is installed and the gateway 3 is processed in the opposite direction Using the invention, it is possible to process the parts along the contour outlined by two IMIS circular arcs of equal radius as the cylindrical socket and the tool. The copying device containing a copier with a profile in the form of a closed contour and a carriage for securing the workpiece, characterized in that, in order to expand technological capabilities in processing profiles formed by two intersecting arcs of circles of equal radius, the carriage is equipped with three located at the vertices of an equilateral triangle rollers for interacting with a copier, the profile of which is made by sections of circular arcs, the first of which is outlined by an arc of radius R 7 / a, the second is ugoy raliusa and R from a point in the middle of the first portion and the third - VR concentrically first radius; sin 60, where a is the distance between the rollers. Sources of information taken into account in the examination 1 "Artobolevsky I. and" Mechanisms in modern technology, T. IV, M., Mashinostroenie -, 1975.