SU1346354A1 - Method of machining butt surfaces of rotating bodies - Google Patents

Abstract

The invention relates to metal cutting and can be used in the processing of annular end surfaces of bodies of revolution. The purpose of the invention is to increase the machining accuracy when milling the above surfaces. Processing is performed. The invention relates to the field of metal cutting and can be used when machining annular end surfaces of bodies of revolution. The purpose of the invention is to increase the machining accuracy when milling annular end surfaces. FIG. 1 shows the scheme of the method; in fig. 2 - the same, when installing the cutter at an angle. The blank (body of rotation) 1 is installed in the spindle head of the swivel device. A cylindrical milling cutter 2 with cutting edges formed by helical grooves of diameter C is installed in the machine spindle. The width of a milling cutter with cutting edges formed by helical grooves is determined. The milling cutter is positioned at a right angle to the axis of the workpiece. Before machining, the milling cutter is shifted in a plane perpendicular to the axis of rotation. The milling cutter can be shifted relative to the grain size by a scale by the value of a l | 2К, К2-К -к | + 2К + 2К, / 2В where B is the milling width; R, is the radius of the outer surface of the workpiece; R is the radius of the inner surface of the ring. In another case, the cutter is shifted so that the angle between the plane passing through the side teeth of the cutter and the plane passing through the axis of the workpiece and the intersection point of the first plane with the outer diameter of the workpiece is equal to arccos (B + R + R2) / 2BR. 2 hp f-shy, 2 ip. c (L or B, ensuring uniform milling of the end surface of the workpiece 1 according to B k O) where k is the coefficient of uniformity (integer); t, is the axial pitch of the milling cutter. CO N4: SGD CO SD 4 The mill 2 is displaced in a plane perpendicular to the mill axis with respect to the axis of rotation of the workpiece 1 by an amount determined from the formula B 4rv - tGkG

Description

where R is the radius of the outer surface

blanks;

R is the radius of the inner surface of the ring;

a is the magnitude of the displacement. After squaring both parts and some transformations, the formula takes the form

J

2R, R -R-Rt + 2R B 2B

After that, the mill 2 reports rotation around its axis and gives the working feed, from which the plunging into the machining depth in the stationary workpiece 1 is carried out. Then, the round work is reported to the workpiece. After completing a single turn, the processing cycle is completed.

In the second case, after determining the milling width B, which ensures uniform milling, the cutter 2 is displaced relative to the axis of rotation of the workpiece so that the angle | 5 between the plane II passing through the side teeth of the cutter and the plane II-II through the center of the workpiece and the point M, which is the intersection point of plane I.-I with the outer surface of the workpiece, was equal to

arccos

in +

 Rz

2BR

The actions in the implementation of the method in this Case are similar to that described,. nym.

0

Claims (3)

1. A method for treating the end surfaces of rotation bodies with a cylindrical mill with cutting edges formed by a helical groove, the axis of which is placed at a right angle to the axis of the workpiece, while the mill and the workpiece are informed by the rotation In order to improve the machining accuracy when milling the annular end surfaces, before machining, the milling cutter is shifted in a plane perpendicular to the axis of the workpiece. 2. The method according to claim 1, about tl and .4 a - y u and with the fact that the cutter is shifted from the axis of the workpiece to the distance AT  Ra-R -Rz + 2R B + 2RaB --R but . 2B where B is the milling width; R is the radius of the outer surface blanks; R / j is the radius of the inner surface of the ring. 3. The method according to claim 1, characterized in that the cutter is displaced so that the angle p between the plane passing through the side teeth of the cutter and the plane passing through the axis of the workpiece and the point of intersection of the first plane with the outer diameter of the workpiece hp arccos g 2 a B + R, + R 2BR  t PS 7 Phie.1 compiler M. Kolbich Editor A ,. Shishkina Tehred L. Oliynyk Proofreader S. Shekmar Order 2756 Circulation 831 Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 FIG. g