SU1342629A1 - Milling cutter - Google Patents

Abstract

The invention relates to the field of metalworking, in particular to milling. The purpose of the invention is to increase the productivity of processing by creating a tool that improves the milling uniformity. The body has a transverse groove and a longitudinal two-step groove, one of the steps of which is located below the bottom level of the transverse helical groove, and the other is above the bottom level of the transverse groove. Supporting liners T-shaped projection placed in a transverse helical ditch. Ke and shoulders are mounted on the longitudinal groove step and abut against the wall of the body formed by the helical surface of the longitudinal groove. The cutting plates are fitted with a side surface in the transverse helical groove and are pressed against the bearing pads with wedges located in the longitudinal groove step. In one of the longitudinal groove located in the direction of the helix of the shoulders of the liner on the surface in contact with the wall of the housing, an undercut was made in the plane perpendicular to the cutter wedge axis; the liner plane, which has a corresponding inclination in the axial and radial directions, which ensures reliable fixing of the plates and a predetermined geometry along the entire length of the working part of the cutter. 2 3.p. f-ly, 3 ill. SL

Description

one

The invention relates to reeling, in particular to milling.

The purpose of the invention is to increase the machining productivity by improving the uniformity of milling, as well as expanding the possibility of using mills by choosing the optimal geometry of the cutting part.

FIG. 1 shows the proposed mill, plan view; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. one .

In the case of the freta 1, there is a transverse groove 2 and a longitudinal two-step groove 3, one of the stages 4 of which is located below the bottom level of the transverse groove and the other 5 above the bottom of the transverse groove. Supporting liners 6 T-shaped, protrusion 7 is installed in the transverse helical groove 2, and shoulders 8 and 9 - on the step 5 of the longitudinal groove and abut against the wall 10 of the housing formed by the helical surface of the longitudinal groove. The cutting inserts 11 are fitted with a side surface in a transverse helical groove and are pressed against the bearing sheaths with wedges 12, located in the stage 5 longitudinal gas. In one of the longitudinal grooves of the shoulders inserted in the direction of inclination of the helix on the surface 13 in contact with the housing wall 10, there is an undercut f in a plane perpendicular to the axis of the cutter. The presence of the undercut on one of the shoulders of the insert provides a more favorable, from the point of view of rigidity, its contact with the screw surface of the longitudinal groove of the cutter. The size of the undercut is selected depending on the angle of inclination on the longitudinal groove.

The plates are fastened using wedges, which, moving in the radial direction of the longitudinal stalemate, press to the base surfaces transversely of the helical groove and the plane of the insert, which has a corresponding inclination in the axial direction.

A 7.6292

and raal, and other directions, which ensures reliable fixation of the plates and a given geometry along the entire length of the working part of the cutter.

The arrangement of the plates along the screw surface of the groove ensures uniform milling due to the sequential insertion of the cutting 10 plates into the workpiece. Besides,

The proposed constructive solution makes it possible to use cutting plates with or without rear corners, and with rear corners, which is especially important when processing viscous materials.

Claims (3)

Invention Formula 20 1. A milling cutter, in the case of which a longitudinal grooves and screws are made, transversely a groove in which the cutting plates are installed, supported on the bearing inserts and fixed 25 with the help of fasteners, in order to, with the aim of turning 1) the machining productivity by improving the uniformity of milling, the longitudinal grooves 30 are screw and two-stage, one level of which is located above the level of the bottom of the transverse helical groove and is intended for placing 1 a support bearing, and hectares are below the level of the bottom screw grooves and is designed to accommodate credit elements. 2. The milling cutter according to claim 1, differing from the fact that the reference contributions are 4Q bows are T-shaped, with the protrusion protrusion placed in a transverse helical groove, and the shoulders - with the ability to interact with the wall of the housing formed by jg step longitudinal groove. 3. Cutter on PP. 1 and 2, characterized in that in one From the longitudinal groove gQ of the shoulders inserted in the direction of inclination of the helix on the surface in contact with the housing wall, an undercut is made in a plane perpendicular to the mill axis. 1J JO. fpL / g 1 Vida FIG. 2 Editor E. Papp Compiled by V. Zolotev Tehred M. Khodanych Order 4552/10 Circulation 974 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab., Ts 4/5 Production and printing company, Uzhgorod, st. Project, 4 Fig.Z Proofreader A.T. sko