SU1467857A2 - Method of working materials by cutting - Google Patents

Abstract

FIELD: machine tool industry. The purpose of the invention is to increase the accuracy and productivity of machining materials while reducing tool wear by ensuring that the torque from the tangential component of the cutting force is equal to the torque from the restrictive coupling response from the cutting tool. The tool insertion and machining is carried out with a plan angle determined from the expression tp 90 & - arctg (R: l) where R is the radius of the processed surface of rotation of the workpiece; 1 is the distance along the axis of rotation from the machining zone to the fixed pole of rotation of the rotating masses of the individual group with the workpiece (or tools). At the same time, when cutting in, the cutting modes are set by the following expressions: S Mp2 / l Cp-t; V 60Rtm-lVC-T, where S is the feed; V - cutting speed; M p2 is the magnitude of the moment from the tangential component of the cutting force to the fixed turn pole; Cp - the coefficient of workability of the material; t is the depth of cut; m is the rotation of the mass of the spindle group with the workpiece (or tool), Cf is the axial moment of inertia of the rotating mass of the spindle group with the workpiece (or tool); T is the time of impact of the tool on the workpiece during plunging. C W (L

Description

This additional invention relates to the field of machine tool construction and is an improvement of the invention according to the author. St. N 1368109.

The purpose of the additional invention is to improve the accuracy and productivity of machining materials while reducing tool wear by ensuring the equality of torque from the tangential component of the cutting force and torque from the restrictive coupling response from the cutting tool.

The method is carried out as follows.

The tool insertion and machining is carried out with an angle in the plan — determined from the expression

four

05

00 ate

to

Cf 90 ° - arctg -,

where R is the radius of the processed surface of rotation of the workpiece;

1 is the distance along the axis of rotation from the machining zone to the fixed pole of rotation of the rotating masses of the spindle group with the workpiece (or tool).

In this case, when cutting in, the cutting modes are set as follows:

- SRP 60R-m-12

I Cp- t

machining while reducing tool wear by ensuring the equality of torque from the tangential component of the cutting force and torque from the restrictive coupling response from the cutting tool, the plunging is performed at feed and cutting speed, defined by the expressions:

S

V

Irg

1-Wed t

60 - 2

de s

V

Mrg

Pt m - C

T -

C t

innings;

cutting speed; the magnitude of the moment from the tangential component (its cutting force relative to the stationary pole of rotation; material handling coefficient; depth of cut; rotating masses of the individual group with the workpiece (or tool);

the axial moment of inertia of the rotating masses of the speddelno group with the workpiece (or tool);

impact time of the tool on the workpiece during plunging.

F

formula of invention

The method of processing materials cutting by ed. St. No. 1368109, characterized in that, with a view to 40 improving accuracy and manufacturer 5

0

five

0

five

0

where s

V

m

pz

1 7

innings;

cutting speed; the magnitude of the moment from the tangential component of the cutting force relative to the fixed turn pole; the distance along the axis of rotation from the working area to the fixed pole of rotation of the rotating masses of the speddelno group with the workpiece or tool; - machinability

material; t is the depth of cut; R is the radius of the surface being machined; rotating masses of shpivdelnogo group with the workpiece (or tool);

the axial moment of inertia of the rotating masses of the spindle group with the workpiece (or tool);

T is the time of impact of the tool on the workpiece during rotation.

m С

Claims (1)

Claim A method of processing materials by cutting by ed. No. 1368109, characterized in that, with the aim of 40 increasing the accuracy and manufacturer 60 · R 'πν 1 ² “~ s“ t; where S is the feed; V is the cutting speed; M p ₂ - the magnitude of the moment from the tangential component of the cutting force relative to the fixed turning pole; 1 - the distance along the axis of rotation from the processing zone to the fixed pole of rotation of the rotating masses of the spindle group with the workpiece or tool; Cp is the coefficient of workability of the material; t is the depth of cut; R is the radius of the workpiece rotation surface to be machined; m - rotating mass of the spindle group with the workpiece (or tool); C is the axial moment of inertia of the rotating masses of the spindle group with the workpiece (or tool); T is the time of the impact of the tool on the workpiece during rotation.