SU1340910A1 - Arrangement for machining chamfers on end face of shaped parts - Google Patents

Abstract

The invention relates to a machine tool industry and can be used in chamfering at the ends of complex parts. The aim of the shadow invention is to improve the accuracy and simplify the design of the device by reducing the kinematic chain of the tool feed drive and increasing its rigidity. The device contains installed coaxially and with the possibility of relative longitudinal and transverse movements, faceplates 1 and 5, with workpiece 3 fixed to faceplate 1 and tool 6 fixed to faceplate 5. Constant contact between faceplates 1 and 5 is provided by the interaction of sleeves 11 and pins 12, installed respectively on the faceplates I and 5, the sleeves P and the fingers 12 interacting with conical surfaces. The faceplate 5 of the axle axle and has the ability to radially move relative to faceplate 1. During operation, faceplates 1 and 5 rotate at the same speed, and the tool is inserted into the hole of the workpiece 3 by the amount of chamfer to be machined. In order to carry out the chamfering process, a radial feed is reported to the faceplate 5. As a result of the interaction of the conical surfaces of the fingers 12 and the sleeves I1, the faceplate 5, and therefore the tool 6, makes relative to the longitudinal axis radial movement at an angle ot, the value of which is determined by the angle of the cone of the sleeves and fingers. 4 il. (L with 4 O CO 13 10

Description

"D" on directional bases (not shown). At the same time, with a simultaneous increase in the radius r, equal to the distance between the axes of rotation

The invention relates to a machine tool industry and can be used in chamfering at the ends of complex shaped parts.

The purpose of the invention is to improve the accuracy and simplify the design of the device by reducing the kinematic chain of the tool feed drive and increasing its rigidity.

FIG. 1 shows the device in IS-: The standing position, general view; figure 2 - the same, in the working position; Figs 3 and 4 are examples of complex contours of parts.

The device contains a faceplate 1 installed in the supports 2 and carrying 6 machined part 3. In the supports 4 coaxially with the face plate 1 is installed the face plate 5 with the tool 6 fixed on it having a contour equivalent to the contour of the workpiece. The supports 4 are located in the housing 7, mounted on the slide 8, installed with lateral movement relative to the base 9. The latter is installed with the possibility of longitudinal movement relative to the bed 10. The plate 1 is equipped with sleeves 11 having conical sockets and circumferentially, and the faceplate 5 has conical fingers 12. Between the base 10 and the base 9 place the spring 13, providing 1e constant contact of the faceplates 1 and 5, through the conical sockets of the sleeves 11 and the fingers 12.

The device works as follows.

At the initial moment of processing, when the axes of the faceplates 1 and 5 coincide, and the tapered jacks of the sleeves 11 and the fingers 12 are in contact over the entire side surface, the tool 6 is inserted into the hole of the part 3 for the amount of the chamfer being machined.

The rotation with the angular velocity ω, obtained from the drive by faceplate 1 and by means of conical pairs P-12, is transferred to faceplate 5. By directly turning on, the gear ratio between faceplates 1 and 5 is equal to one. In order to carry out the machining process, the axis of rotation of the faceplate 5 is moved in the plane of its rotation, informing the slide 8 of the transverse flow S „„ „along the guide bases 9

five

0

The faceplates also increase the distance between the faceplates in the axial (longitudinal) direction by size 1, as the fingers 12 of the faceplate 5, in contact with the sockets of the sleeves 11, force the faceplate 5 with the body 7 with the rails W ortment 9 to move along the base of the base 10 longitudinal feed speed. The relative movement between the two faceplates will be a translational circular motion (FCD) of radius g. Simultaneously increasing the radius g of the FBD and withdrawing the tool from the hole of the workpiece leads to the formation of a chamfer along the entire complex contour.

The magnitudes of the transverse and longitudinal feeds are related by:

. | j30L - tg, J npoi,

where about the angle of the cone of the sockets of the sleeves and fingers.

At the end of machining, with the exit of tool 6 from scrape away the workpiece 3, a contour 4 is formed, equidistant to the original complex contour 15.

Depending on the desired shape of the chamfer, the shape of the forming matching pairs 11-12 is selected.

Introducing a conical pair, connecting a faceplate, carrying the workpiece — and a tool — into a device, simplifies the kinematic chain, which simplifies the design of the device and increases its rigidity.

Claims (1)

Invention Formula A device for chamfering at the ends of complex profiles, comprising two face plates mounted opposite one another with the possibility of rotation with equal angular velocity and relative movement in the longitudinal and transverse directions, characterized by that, in order to improve the accuracy and simplify the design of the device, one faceplate is provided with bushings, the inner surface of which is made conical, and the other is spring-loaded in the axial direction and equipped with conical fingers that can interact with the conical surfaces of the sleeves. Fig.Z /four Editor M.Tovtin Compiled by A. Kornioyuv Tehred M. Khodanych. Order 4384/16 Circulation 974 Subscription VNIIPI USSR State Committee for inventions and discoveries: 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Fy Proofreader G. Reshetnik