SU1235662A1 - Cutting bit for assembled tool - Google Patents

Description

The invention relates to metal working and can be used on universal and special equipment for grooving and trimming operations.

The purpose of the invention is to increase the total resistance by increasing the number of cutting edges of the plate with the possibility of using all cutting vertices. .

FIG. Figure 1 shows the cutting plate, isometric; in fig. 2 - the same, top view; in fig. 3 is a view A of FIG. 2; in fig. 4 is a view B in FIG. 2; in fig. 5 - an example of use - plates in a through cutter ;; in FIG. 6, section B-B in FIG. five.

The cutting plate is made rhombic for with the main cutting edges 1-4. Cut out the cutting edges 1 and 2 with respect to the cutting edges 3 and 4, respectively, with the axes of the V-shaped grooves formed by the surfaces 5, 6 and 7, 8.

The angles oi are formed by normals to the plane 9 and inclined surfaces 10 and 11 (Fig. 3) and normals to the plane 12 and inclined planes 13 and 14 (Fig. 4). The planes 10 and 11 are the main rear for the cutting edges 1 and 2 and the secondary rear for the cutting edges 3 and 4,

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and planes 13 and 14 are the main rear edges for the cutting edges 3 and 4 and the secondary rear edges for the cutting edges 1 and 2.

The front surfaces of the plate can be made with chip breakers with scales 15 and 16. When installed in the working position, create the back angle oL on the plate, the base is rotated from the horizontal plane at an angle of 2ы. while the plate rests on the surfaces 7 and 8 of the V-groove. The surface 10 becomes the main rear face of the cutting edge 1, and the surface 11 becomes the reference. After turning the plate, the surface 11 becomes the back face of the cutting edge 2, and the surface 10 becomes the reference edge. After the flip plate alternately, surface 13 comes into operation with cutting edge 3 and surface 14 with cutting edge 4. The angle h in the plan is set technologically. Rear auxiliary angles are formed by using tilt angles S. Auxiliary angles in the plan are formed by the rhombic plate shape. The cutter can work as a feedthrough and as an additional cutting of the corners without under-points, using the sharp and blunt tops of the rhombus.

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Editor O. Bugir

Compiled by B. Zolotev

Tehred O. Gortvay, Proofreader E. Roshko

Order 3045/11 Circulation 1001 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, st. Project, 4

Fig.b

Claims (1)

CUTTING PLATE FOR THE ASSEMBLY TOOL, on the opposite sides of which there are V-shaped grooves that form the front surfaces, the axes of which lie in parallel planes and are turned relative to each other, characterized in that, in order to increase resistance by increasing the number of cutting edges of the plate, the rear corners of the cutting edges of the latter are formed inclined from the normal to the plane formed by one pair of cutting edges, to the side of the other pair of cutting edges by surfaces pairwise converging in opposite sides us. 15 6 2>