SU946804A1 - Method of working polyhedron surfaces - Google Patents

Description

The invention relates to the processing of metals by cutting and may find application in the processing of products bounded by many-sided surfaces, for example, non-circular shafts.

A known method of turning multifaceted surfaces in which the blade tool and product are reported are relative longitudinal feed movement and interconnected equally directed rotations with a ratio of angular velocities equal to the ratio of the numbers of machined edges and cutting elements 11 The disadvantage of the known method is that for any number of edges greater than 2 the path of the relative motion of the cutting elements represents a convex / tinium. Thus, the known method allows only convex faces to be machined and does not allow concave and flat faces to be machined, which

reduces its technological capabilities.

The purpose of the invention is to expand the technological capabilities of the known method, i.e. providing the possibility of processing both convex, and flat and concave faces.

This goal is achieved by the fact that the number of cutting elements of the tool is chosen depending on

10 of a given curvature of the faces, and when machining flat faces, it is determined by the formula

TO

Z 15

where K is the number of processed faces;

d is the diameter of the circle inscribed in the polyhedron;

D is the diameter of the cutting tool, and when machining convex ribs of concave edges, it is correspondingly larger.

n

y or less, calculated by the above formula,

The proposed relationship for oriije division of the number of cutting ulemei-goz nnstrumeite is obtained as follows.

First of all, analytic.html-1s and psch-yymeski established that the accuracy of the shaping of one flat headpiece with equally effective pulleys of tooltag X of the workpiece is achieved with a ratio of 1 of their angular velocities equal to the value of

i.f./f;

  d - diameter of the cylinder

in a multi-faceted surface-: O - diameter pewfyuiero tool

that

8o-sec x, to ensure dimensional dividing, i.e. the transition from one face to another, the ratio of angular speeds tool. and the workpieces are equal to the ratio of the numbers of the machined x faces K i-i of the reguy | and: elements 7, i.e.

 Z

I equated the right-hand parts with the help of dependencies, we get the calculated Formula for determining the number of cutting elements

For processing convex and concave faces, the number of cutting eG | elements is chosen, respectively, more Kli less than the calculated value. Changing the curvature of the profile of faces with the same number of cutting elements is achieved by adjusting the tool diameter. The absolute values of the frequencies of rotation of the product and the cutting head and the value of the tool feed along the axis of the product are selected based on the normal cutting conditions.

The drawing shows a mutual (location of the tool instry of the product - the movements it communicates during the treatment of the seven-faced surface.

For the shaping of the transverse section, the product 1 and the tool 2 communicate the same directional rotational movements of Vl and B; around their axes 3 and k, respectively, with frequencies And and And. .

44

The tool is also reported to have a P-y feed movement, speed, speed, speed, speed, speed, speed, speed, speed. According to the formula for calculating -1, there are cutting epementops, when processing a semi-rank surface with flat edges, diameter DOf-; circumscribed circle d 100 mm, with a tool with a diameter of D 125 mm. necessary; the actual elements pavno three.

For machining convex and seven-sided surfaces, it is necessary to use a tool with vi more cutting elements, g for machining BOfiiyTbix faces with two or one element, For all cases the consensus is the i-; strume h g; and the products select a relation C Rj, ;; .- depends on iriocfbo

Ph o i.iy p 3: - | ; y Dp c ect and the method of processing the MO: ogp;; ac; - :: xx surfaces of poiqr to Lezviy i.i-ic g to the zumont and article 1c. the relative longitudinal dszi and feed filing interrelated (;; dig-; acoc; ngl-equal; i-Hbhj vuzoni with op-oshen.-yum yi Og-soros; tei equal to C) tno1; o1pi -o chioo / obrazovype | .O1X i PLN (th and renuii x zlem ems, about g. p and i o y u and about that; o, c ;: ielso :: ac1; 1 dir nig roxHOjKjr iiyskikh Bosmo 1 (nost (and, the number of re / : y; li:: leme; -1 t -Tools are chosen in the following order ": - 1Simosgy. from a given curvature of a geaNS .Y, Grich when processing flat OHC1, this is the limit

-l process ee-wounds. С: is the diameter of the cylinder heading, and is the diameter of the cutting edge,

P When processing convex; 1GI ZOGpugyh

 pp) to her it corresponds to: npo or Mei-ibUJe, calculated by Mr. Og) and to the standard of l 6.

Information sources ,

the rights of a grie oxpegagise i, the AtiTopCKoe certificate of the USSR 1; 2783ch8, cl, B 23 B 5 / 4h, 1568.

Claims (1)

Claims of the method of processing multifaceted, surfaces in which the blade tool and product are reported with a relative longitudinal feed movement and interconnected equally directed rotations with an angular velocity ratio equal to the ratio of numbers. machined faces and cutting elements, characterized in that, in order to expand the technological capabilities, the number of cutting elements of the tool is chosen depending on the given curvature of the faces, and when machining flat faces it is determined by the formula where K is the number of processed faces, - diameter of a cylinder inscribed in a polyhedron, ϋ - diameter of a cutting tool, and when machining convex or concave faces, it is correspondingly larger or smaller, calculated using the above formula.