SU1505694A1 - Gear-cutting milling cutter head - Google Patents

Abstract

The invention relates to metal cutting and can be used in the manufacture of wheels with circular teeth. The purpose of the invention is to expand the technological capabilities of the instrument by using it for finishing. A gear-cutting tool for cutting wheels with circular teeth contains cutters with a dihedral front surface and different profile angles, depending on the number of cutters, on the outer and inner blade. The front corners of the latter are different, and on the blade with a smaller profile angle, the rake angle is larger by the amount indicated in the formula. The front corners for tool unification are corrected depending on the number of the incisors, according to the formula. 1 hp ff, 9 ill.

Description

The invention relates to the processing of metals by cutting and can be used in the manufacture of wheels with circular teeth.

The aim of the invention is to expand the technological capabilities of the tool by using it for finishing.

FIG. 1 shows the gear head, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 - a fragment of go. yuvki - cutter; in fig. 5 is a view of B in FIG. four; in fig. 6 is a view of FIG. five; in fig. 7 is a sectional view of FDD of FIG. five; in fig. 8 is a section E-E of FIG. five; in fig. 9 is a view of FIG. four.

The gearing head comprises a housing 1, mounted in a housing 2, fastened with screws 3. In housing 1, there are radio, 1 п grooves, in which with an inclination at an angle /. relative to the axis O of rotation of the head, two-sided cutters 4 are fixed, fixed with screws 5, screwed into the holder 2. Installing the cutters under the angle л is necessary for positioning the outer Ke and the inner / (side cutting edges in the axial plane of the head). cutting edges have an angle

tilt. ,,, - {i) and when installing the incisors in the head body without tilting, the cutting edges do not lie in the axial plane of the tool, i.e. they do not belong to the conical manufacturing surfaces.

The location of the inner edge L in the axial plane of the head can be achieved by rotating the tool at an angle /., Around the straight, pair; |, the first working head (and, the tendency of the head to lie) and the axial H, IOCKOC m of the head. So as a pro, tnye y, a, and c; 1 of the outer and inner blades in the general case are not equal to each other, to achieve equality of /, .. /.,/. the front corners y, -, and y, "on the outer and inner blades of x should not be equal to each other. Moreover, the following condition must be met: if a, o,. TS) .. P 1-- ntsa in front yr. iax on the outer and inner .chez xi ii ,,,,,, v ,,.,

OR

, arctij tga ,,,: tgv "- .:

1 era,

I. (

ate

SP

cl

O5

; o .U

Since y times. 111н1 1x th. Since the angles of the incisors of the incisors are not the same, then the different inclinations of incisors are different, which means that the corns of different heads have different inclinations of the slots and are not interchangeable. To avoid this, for the front angles Y Y C and YHI on the outer and inner blades, it is also necessary to introduce corrections depending on the size of the Dse and Yes / profile numbered corrections, as well as the values of the nominal angle a and the tool profile and nominal rake angle and

agctg arc1§tgYu tga -tg (a + Aae). tg (a + Aae) -tgatg V

tgY4tg ° -tg (a + Da,) tg (cx + Dai) + tgatg Y „

Claims (2)

1. A gear head for cutting wheels with circular teeth, containing cutters with a dihedral front surface and different profile angles, depending on the number of cutters, on the outer and inner blades, in order to expand the technological capabilities of the tool beyond by using it for finishing, front corners on the outer and inner blades DY | agctg -TuKol. the cutter is different, and on the blade with a smaller profile angle, the rake angle is more than the nominal by JgOCetgYuKO tga, (.) where a.e (i) is the angle profile of the outer (inner) blade of the tool; 7е (о- rake angle on the outer (inner) blade in the plane parallel to the cutter base. 2. A gear head according to claim 1, characterized in that additional corrections are made to the front corners on the outer and inner blade of the cutter, depending on the number of the cutters of the gear cutting head, so that l ,,, -, .- tJgV Iga-tg (a-fDa. (.). (ol + tgatg. where Y is the nominal value of the rake angle on the outer and inner blades in a plane parallel to the cutter base; a is the nominal angle of the profile on the outer and inner blade of the cutter; Dssey - correction for the angle of the profile of the outer (inner) blade, depending on the number of incisors. (ig.1 Fiz.Z Phage. 6 Vidm HER 9g.9