CN209094638U - Prewave sword necking tool - Google Patents

Abstract

The technical scheme of the utility model is a front wave-edged grooving knife, which comprises a cutter body, a plurality of cutting edges are evenly arranged in the front section of the cutter body, and a helical chip removal groove is arranged between two adjacent cutting edges. The helix angle is the alternating helix angle composed of a 30° helix angle and a 26° helix angle. The utility model has the advantages of low cutting resistance, high chip removal speed and high cutting efficiency, and is not easy to chip during the cutting process.

Description

Front wave edge slotting knife

technical field

The invention relates to a grooving knife, in particular to a front wave-edged grooving knife.

Background technique

Slotting knives are commonly used in machine tools in the machining industry. Now the slotting knives on the market are milling cutters with equal helix angles, which are prone to vibration and noise when they encounter long overhangs or irregular workpiece shapes. At the same time, the surface roughness of the processed workpiece is poor, and the cutting edge is easy to chip.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention aims to provide a front wave edge grooving cutter, which has low cutting resistance, high chip removal speed, high cutting efficiency, and is not easy to chip during cutting.

The technical solution of the present invention is a front wave-edged grooving knife, which includes a cutter body, a plurality of cutting edges are evenly arranged in the front section of the cutter body, and a helical chip flute is arranged between two adjacent cutting edges. The helix angle is an alternating helix angle consisting of a 30° helix angle and a 26° helix angle.

Preferably, the cross section of the chip flute is arc-shaped.

Preferably, the connection between the chip removal groove and the end face of the cutter body is an arc groove transition.

Preferably, the rake face of the blade is provided with a negative chamfer.

Preferably, the tip of the blade is chamfered.

Preferably, the cutter body is coated with an AlCrN coating, and the hardness of the coating reaches HV3000-4000.

Preferably, the cutter body is formed by high-temperature sintering and bonding of ultra-fine and ultra-fine particle materials.

Preferably, the number of the blades is 4, which are evenly arranged at equal angles along the circumferential direction.

By designing a brand-new cutting edge angle, the invention makes the cutting edge a variable helical structure, so that the cutting edge is not stressed at the same time during the cutting process, which effectively reduces the cutting resistance, reduces the cutting vibration, and improves the cutting efficiency. It is not easy to chip, which improves the service life of the tool.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the top view of Fig. 1;

Among them: 1—tool body; 2—blade; 3—chip flute.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 1 to FIG. 2 , the technical solution of the present invention is a front wave-edged grooving knife, which includes a knife body 1 , and a plurality of knife edges 2 are evenly arranged in the front section of the knife body 1 . A helical chip flute 3 is arranged between them, and the helix angle of the cutting edge 2 is an alternate helix angle composed of a helix angle of 30° and a helix angle of 26°.

Preferably, the cross section of the chip removal groove 3 is arc-shaped, and the circular arc chip removal groove is designed to make the chip storage space larger and the chip removal smoother.

Preferably, the connection between the chip removal groove 3 and the end face of the cutter body 1 is an arc groove transition, and the iron chips are discharged more smoothly along the groove bottom, reducing the chip resistance.

Preferably, the rake face of the blade 2 is provided with a negative chamfer to make the blade stronger, increase the rigidity and strength of the blade, and the impact resistance of the blade.

Preferably, the cutting edge of the cutting edge 2 is chamfered, and the chamfering value is 0.1-0.15 mm. During processing, the impact resistance of the cutting edge is enhanced, the cutting edge is effectively protected, and the probability of cutting the cutting edge is reduced.

Preferably, the cutter body 1 is coated with an AlCrN coating, and the hardness of the coating reaches HV3000-4000, which increases the wear resistance of the cutting edge of the cutter and improves the service life of the cutter.

Preferably, the cutter body 1 is made of ultra-fine and ultra-fine particle materials by high-temperature sintering and bonding, which enhances the rigidity of the cutter and has good impact resistance, so as to avoid cutter breakage caused by too brittle material during machining.

Preferably, the number of the cutting edges 2 is 4, which are evenly arranged at equal angles along the circumferential direction.

The front wave edge grooving knife designed by the invention has a novel geometric structure that can realize rapid grooving cutting and chip removal, high cutting efficiency, good rigidity and strength of the cutting edge, not easy to chip, and long service life.

The above are only preferred embodiments of the present invention, and do not limit the invention in any form. Any simple modifications, equivalent changes or modifications made to the above embodiments according to the technical principles of the present invention still belong to the present invention. within the scope of the technical solution of the invention.

Claims (8)

1. a kind of prewave sword necking tool, including cutter hub (1), cutter hub (1) leading portion is evenly arranged with multiple blades (2), two Helix chip space (3) are provided between adjacent edge (2), it is characterised in that: the helical angle of the blade (2) is 30 ° of spirals The interaction helical angle at angle and 26 ° of helical angles composition.

2. prewave sword necking tool according to claim 1, it is characterised in that: the section of the chip space (3) is arc-shaped.

3. prewave sword necking tool according to claim 1, it is characterised in that: the chip space (3) and cutter hub (1) end face connect Meeting place is arc groove transition.

4. prewave sword necking tool according to claim 1, it is characterised in that: blade (2) rake face, which is provided with, to be born Rib.

5. prewave sword necking tool according to claim 1, it is characterised in that: chamfered at the point of a knife of the blade (2).

6. prewave sword necking tool according to claim 1, it is characterised in that: be coated with AlCrN on the cutter hub (1) and apply Layer, coating hardness reach HV3000-4000.

7. prewave sword necking tool according to claim 1, it is characterised in that: the cutter hub (1) uses superfine ultra micron material Material high temperature sintering is bonded.

8. prewave sword necking tool according to claim 1, it is characterised in that: the quantity of the blade (2) is 4, along circle Circumferential direction is angularly evenly arranged.