SU996117A1 - Gear cutting machine - Google Patents

Description

(54) DIGGED HEAD

The invention relates to metal cutting, in particular to cutting tools.

Known cutting head for finishing the teeth, in the body of which radial are made. grooves in which are installed cutting and supporting swivel segments that have a curved working surface. Adjusting wedges with grooves are placed in the radial body, in which the supporting segments are installed, interacting with their curvilinear surface with the corresponding surface of the groove

The disadvantages of the known cutter heads are the considerable complexity of setting a given profile angle and the low rigidity of the tool.

The purpose of the invention is to reduce the labor intensity of adjusting the feathers and improve the accuracy of adjustment.

The goal is achieved by the fact that on each wedge there are pulped flats inclined to the axis of the wedge, with the tilt angle of one of the corresponding to the angle of the initial installation of the rest before the start of operation, and the angles of tilt; others are different from ped) initial by an amount equal to:

AfK- t)

TO,

where f is the tolerance on the angle profile of the tool; I am a bald patch on a wedge, obus g

10 catching precision adjustment of the cutter ;. . K is the number of the bald spot, providing a given positive IJSI negative deviation of the angle of the profile from the initial one.

FIG. 1 schematically shows a fragment of the proposed cutting head, front view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - section of the wedge, perpendicular to the face, corresponding to the NS setting of the cutter; in fig. 4 is the same, perpendicular to the round face when installing the tool with the sign in FIG. 5 - the same, when installing the tool with the sign -.

In the housing 1 of the head there are radial grooves that end

30 on both sides of the cylindrical holes for the clamping wedges 2 and the adjusting wedges 3, which are cylindrical rollers with bald heads I inclined to the longitudinal axis of the wedge. The cylindrical surface of the wedges 2 and 3 are in contact with the surface of the holes in the housing 1, and the plane of one of the bald faces - with the incisors 4 and linings 5 installed in the grooves of the head. The cutters 4 are fastened and loosened with screws b, the adjusting wedges 3 are moved with the aid of screws 7. The axial movement of screws 6 and 7 in wedges is limited by the threads and nuts 8 and 9, respectively.

Let's pretend that. Vi 3, therefore, one of the bald heads of the adjusting wedge is inclined to its longitudinal axis at a certain angle (b, the angle of the other face, indicated by

4 equals fj -fcT, and the third

denoted by the symbol is equal to fV-cf. The slope of the slope of the clamping wedge, marked with t and -, is –y – сГ and +, respectively, where is some nominal angle corresponding to the angle p.

If the angle cutter's profile value is outside the tolerance (f, the clamping and adjusting wedge is released and turned to the cutter with a side marked + or depending on the need to increase or decrease the angle of the cutter profile. If necessary, a thinner the angular setting of the incisors, the number of flats on the clamping and adjusting wedges x can be increased, for example, to 5. In this case, the division price when adjusting the angle of the profile

equal to ± Foop vIyla invention

Toothed head for cutting conical and hypoid wheels with a curved tooth, in the radial grooves of the body of the engine, there are installed cuttings fixed by means of wedges with adjustable possibility, in order to reduce the labor intensity and improve the accuracy of adjustment of the cutters during operation, each wedge is made inclined to the axis of the wedge, and the angle of inclination of one of them corresponds to the angle of the initial installation of the tool before the start of the operation, and the angles of inclination of the others are different: from the initial angle Inu, equal to:

PK-I K,

where SG - the tolerance on the angle profile of the tool; And - the number of bald spots on the wedge, due to the accuracy of the adjustment of the rezd;

K is the number of flats that provide the specified positive or negative deviation of the profile angle from the original one. Sources of information taken into account in the examination

1. USSR author's certificate No. 524627, cl. B 23 P 2i / 22.

AA13 7 5 And 6 f

U J I LI I

5

f1 ".z

Claims (1)

Claim A gear-cutting head for cutting bevel and hypoid wheels with a curved tooth, in the radial grooves of the body of which are mounted a rubber fixed with wedges with the possibility of adjustment, characterized in that, in order to reduce the complexity and improve the accuracy of adjustment of the incisors during operation, flats are made on each wedge inclined to the axis of the wedge, and the angle of one of them corresponds to the angle of the initial installation of the cutter before operation, and the angles of others are different from the original y, equal to: about. where cf ~ tolerance on the angle of the cutter profile; And - the number of flats on the wedge, due to ¹ accuracy of the adjustment of the cutter; K is the number of flats. providing a given positive or negative deviation of the profile angle from the original.