SU1348066A1 - Method of setting up metal=cutting machine for machining spherical surfaces - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to mechanical engineering and concerns the setup of a metallose machine for working on convex and concave spherical surfaces. The purpose of the invention is to improve the accuracy of setting up and machining spherical surfaces by additionally taking into account T1 when setting up a radius machine at the tool tip. For this, the groove grooves are preliminarily performed with a tool 5 of a given radius on the flat surface of the test piece, the tool spindle 2 is set axis coaxially with the axis of the working spindle 1, and linear coordinates A - A are determined with diametrically located points on the groove and inside edges. Then, by the expression Rv, p 1/4 (A - A) (AO A), the average value of the tool radius is determined, and the angle of inclination of the axes of the spindles to each other is determined by the expression sin R ,, ep ,; (К „RO), where R is a given radius ts,. surface curvature; K p is the radius at the tool tip. 5 il. (L

Description

Phage. one

13

FIELD OF THE INVENTION The invention relates to a machine structure and relates to the treatment of spherical surfaces.

The purpose of the invention is to improve the accuracy of machining of spherical surfaces by additionally taking into account when setting up the machine tool radius at the tool tip.

FIG. Figure 1 shows the processing scheme for convex spherical surfaces of any radius; in fig. 2 - processing scheme of concave spherical surfaces of any radius; on

FIG. 3 shows the node I in FIG. one; in fig. 4, node II in FIG. 2; in fig. 5 is a diagram of groove groove on the test piece.

The method of setting up a metal cutting machine for processing spherical surfaces is as follows.

The axis of the working spindle 1 and the tool spindle 2 are located in the same plane. The workpiece 3 is fixed on the working spindle 1, and the cutting tool 5 is fixed on the tool spindle 2 on the ply 4 4. The groove R is preliminarily made on the flat surface of the test piece, in which the axis of the tool spindle is set coaxially with the axis of the working spindle.

Then, the linear coordinates of the diametrically located points A, A, A, A of the outer and inner edges of the groove made by the tool on the test piece are measured, and the actual average value of the tool radius is determined by the formula

R

 j.))

After that, for a given value of the radius of curvature R of the machined surface, the sine of the angle of installation of the axis of the tool spindle H is calculated taking into account the geometry of the cutting tool.

For a tight surface (fig. 1)

Sin I /

R.

(Fig. 3) b R-sinif,

about

tip radius

 CT

from where (K +

R.

R,

R - Then

R,

,,. „„ ......

For concave surface (fig. 2)

 , RU +0,

ÅUTS (Fig. 4) 8 Rj sinM,

radius at the top of the tool.

sin h

 R

sin × (R - R) R,;

 T7 i

25

sin4

R

 - R.

0

g

0

five

0

five

The axis of the tool spindle is set at an angle H to the axis of the working spindle (Fig. 1, 2). As a result of these operations, the metal cutting machine is set up.

Claims (1)

Formula invented and The method of setting up a cutting machine for machining spherical surfaces, according to which the axis of the tool spindle is set at an angle ОМ 9СР to the axis of the working spindle, and the cutting edge of the tool is positioned from the axis of the tool spindle at a distance of the tool radius R, determined depending on the radius of curvature R surface to be treated, characterized in that, in order to achieve accuracy, the groove is preliminarily drilled with a tool of a given radius on a flat surface hoists, set the axis of the tool spindle coaxially with the axis of the working spindle, determine the linear coordinates A, A ,, AJ, A diametrically located points on the outer and inner edges of the groove, determine the average radius of the tool R by expression R A,) + (A j.), .CP  1348066 and then for a given value of the radius of curvature R of the machined surface, set the angle of inclination of the axis of the tool spindle to the axis of the working spindle by the expression 5 g m sin h --it- Jf- R + R. 5 where R is the radius at the tool tip. ikg Fi9. J PAIN FIG. if Editor M. Tovtin Compiled by V. Semenov Tehred M. Didyk Order 5147/10 Circulation 969 Subscription BHWilTH USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader M. Demchik