CN107952988A - A kind of wedge angle forming cutter - Google Patents

Abstract

The present invention proposes a sharp angle forming knife, which includes a knife bar and a knife head formed at one end of the knife bar. The knife head is provided with a first knife tooth, a second knife tooth and a third knife tooth. The first knife tooth Starting from the end of the cutter head, a first arc-shaped cutting edge and a first axial cutting edge are provided in sequence, and the second knife tooth is provided with a vertical second axial cutting edge starting from the end of the cutter head. The third knife tooth is provided with a third axial cutting edge. In the present invention, through the cooperation of the first cutter tooth, the second cutter tooth and the third cutter tooth, segmental processing is formed simultaneously, which is highly efficient and precise; the first cutter tooth and the second cutter tooth process sharp-angled blades through arc-shaped cutting edges for transition , strong and durable, not easy to wear or crack.

Description

A sharp corner forming knife

technical field

The invention relates to the field of processing knives, in particular to a sharp corner forming knife.

Background technique

A cutting tool is a tool used for cutting in mechanical manufacturing. The forming turning tool is a special tool for machining the forming surface of the rotating body. Machining with a forming turning tool only needs one cutting stroke to cut out the forming surface. The operation is simple and the production efficiency is high. The accuracy of the forming surface has nothing to do with the worker's operation level, but mainly depends on the manufacturing accuracy of the cutting edge of the tool. For the forming of grooves, in order to prolong the service life of the blade, the tip of the blade is usually passivated to avoid cracking and damage of the edge during milling, but this can only process some grooves that do not have special requirements for the sharpness of the corners. For some grooves that require the corners of the groove bottom surface and the groove wall to be sharp instead of rounded, it cannot be satisfied, because when the machining tool that is directly consistent with the cross-sectional shape of the groove is processed, the sharp edges on both sides are easy to wear or crack .

Contents of the invention

In order to solve the above problems, the present invention proposes a durable, high-precision, high-efficiency sharp corner forming knife.

The present invention proposes a sharp angle forming knife, which includes a knife bar and a knife head formed at one end of the knife bar. The knife head is provided with a first knife tooth, a second knife tooth and a third knife tooth. The first knife tooth Starting from the end of the cutter head, a first arc-shaped cutting edge and a first axial cutting edge are provided in sequence, and the second knife tooth is provided with a vertical second axial cutting edge starting from the end of the cutter head. The third knife tooth is provided with a third axial cutting edge.

In one or more embodiments of the present invention, each of the first knife teeth, the second knife teeth and the third knife teeth includes two, and they are arranged symmetrically.

In one or more embodiments of the present invention, the third knife tooth is arranged between the first knife tooth and the second knife tooth.

In one or more embodiments of the present invention, chip removal grooves are provided at axially separated positions of the first cutter tooth, the second cutter tooth and the third cutter tooth.

Beneficial effects of the present invention: the sharp corner forming knife proposed by the present invention is provided with a first knife tooth, a second knife tooth and a third knife tooth. The first arc-shaped cutting edge and the first axial cutting edge, the second knife tooth is provided with a vertical second axial cutting edge, a convex second arc-shaped cutting edge and a vertical a straight second radial cutting edge, and the third tooth is provided with a third axial cutting edge. The first cutter tooth and the second cutter tooth are respectively used for cutting part of the bottom surface of the groove and one of the groove walls and the sharp angle formed by the groove wall and the bottom surface, and the third cutter tooth is used for milling the horizontal surface of the groove. Through the cooperation of the first tooth, the second tooth and the third tooth, the segmental processing is formed at the same time, which is efficient and accurate; the cutting edge of the first tooth and the second tooth is processed through an arc-shaped cutting edge, which is strong Durable, not easy to wear or chip. The present invention can also be applied to the forming process of blind holes whose corners between the hole wall and the hole bottom surface are at right angles.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a projected view in the direction of the end surface of the cutter head of the present invention.

Detailed ways

The scheme of this application is further described in conjunction with the accompanying drawings as follows:

Referring to accompanying drawings 1-2, a sharp corner forming knife includes a knife bar 4 and a knife head formed at one end of the knife bar 4, and the knife head is provided with a first knife tooth 1, a second knife tooth 2 and a third knife Teeth 3, the first knife tooth 1 is provided with a protruding first arc-shaped cutting edge 11 and a first axial cutting edge 12 in sequence from the end of the knife head, and the second knife tooth 2 is formed by the end of the knife head Initially, a vertical second axial cutting edge 21, a protruding second arc-shaped cutting edge 22, and a vertical second radial cutting edge 23 are provided in sequence, and the third knife tooth 3 is provided with a third axial cutting edge. Cutting edge 31 .

Further, the first knife tooth 1 , the second knife tooth 2 and the third knife tooth 3 each include two, and are arranged symmetrically.

Further, the third knife tooth 3 is arranged between the first knife tooth 1 and the second knife tooth 2 .

Further, chip removal grooves are provided at axially separated positions of the first knife tooth 1 , the second knife tooth 2 and the third knife tooth 3 .

During tool machining, the first cutter tooth 1 and the second cutter tooth 2 are respectively used for cutting part of the bottom surface of the groove and one of the groove walls and the sharp angle formed by the groove wall and the bottom surface, and the third cutter tooth 3 is used for milling the groove level of the tank. Through the cooperation of the first knife tooth 1, the second knife tooth 2 and the third knife tooth 3, segmental processing is formed simultaneously, which is efficient and precise; the first knife tooth 1 and the second knife tooth 2 process sharp-edged blades through arc cutting Edge transition, strong and durable, not easy to wear or chip. The present invention can also be applied to the forming process of blind holes whose corners between the hole wall and the hole bottom surface are at right angles.

The above-mentioned preferred implementation mode should be regarded as an illustration of the implementation mode of the scheme of this application, and any technical deduction, replacement, improvement, etc. that are similar to, similar to, or based on the scheme of this application should be regarded as the scope of protection of this patent.

Claims (4)

1. a kind of wedge angle forming cutter, including knife bar and the cutter head for being formed at knife bar one end, it is characterised in that the cutter head is equipped with the One cutter tooth, the second cutter tooth and the 3rd cutter tooth, first cutter tooth originate the first arcuation equipped with evagination successively by cutter head end and cut Cut sword and first axis cutting edge, second cutter tooth originated by cutter head end be equipped with successively the axial cutting edge of vertical second, Second arcuation cutting edge of evagination and the second vertical radial cutting sword, the 3rd cutter tooth are equipped with the 3rd axial cutting edge.

2. wedge angle forming cutter according to claim 1, it is characterised in that first cutter tooth, the second cutter tooth and the 3rd knife Tooth includes two, and is to be symmetrical arranged.

3. wedge angle forming cutter according to claim 2, it is characterised in that the 3rd cutter tooth be arranged on first cutter tooth and Between second cutter tooth is straight.

4. wedge angle forming cutter according to claim 3, it is characterised in that first cutter tooth, the second cutter tooth and the 3rd knife The axially spaced place of tooth is equipped with chip space.