CN207873228U - A new type of mini word knife - Google Patents

Abstract

The utility model discloses a novel mini word sword, including tool bit and handle of a knife, the tool bit is located the one end of handle of a knife, the tool bit is the toper, the surface of tool bit is equipped with the chip groove of two spiral settings, the main cutting edge of two spiral settings and the vice cutting edge of two spiral settings, the main cutting edge is located the side of chip groove, the vice cutting edge is located the side of main cutting edge, the helical direction of chip groove, main cutting edge and vice cutting edge is the same, the relief angle sword width of main cutting edge reduces toward knife tip direction gradually, the knife tip position of tool bit is equipped with first end tooth and second end tooth. The utility model discloses a rational in infrastructure, adopt sharp toper helical blade design, the precision is high, and the cutting effect is good, on-stick sword in the course of working, big spiral chip groove, the chip removal is unblocked, and no deckle edge, the rigidity is good, and the incorruptibility is high, and difficult disconnected sword has effectively improved machining efficiency, greatly reduced the rejection rate.

Description

A new type of mini word knife

technical field

The utility model relates to the technical field of milling cutters, in particular to a novel miniature word cutter.

Background technique

In the processing of metal materials and non-metallic materials such as acrylic, plastic, and fiberglass boards, mini-word knives are often used, but the current mini-word knives on the market have the following shortcomings: sticking to the knife during processing, chip removal is not smooth, and durable The strength and rigidity are poor, and it is easy to break under the influence of alternating impact force during long-term use, which will affect the processing, and may cause damage to the worker or the surface of the workpiece after the break, posing a safety hazard.

Utility model content

The purpose of this utility model is to overcome the above-mentioned defects in the prior art, and provide a machine with reasonable structure, high precision, good cutting effect, non-stick knife, unimpeded chip removal, good rigidity, high durability and can effectively improve processing efficiency. New mini word knife.

In order to achieve the above purpose, the utility model provides a new type of mini-word knife, including a cutter head and a handle, the cutter head is located at one end of the handle, the cutter head is conical, and the surface of the cutter head is provided with Two helically arranged chip flutes, two helically arranged main cutting edges and two helically arranged minor cutting edges, the main cutting edges are located on the sides of the chip flutes, and the minor cutting edges are located on the sides of the main cutting edges On the side, the helical directions of the flute, the main cutting edge and the minor cutting edge are the same, the relief width of the main cutting edge gradually decreases toward the tool tip, and the tool tip of the cutter head is provided with a central Symmetrical first end teeth and second end teeth.

As a preferred embodiment, the taper of the cutter head is 16°-30°.

As a preferred embodiment, the helix angles of the main cutting edge, the secondary cutting edge and the flutes are respectively 30°.

As a preferred embodiment, the first relief angles of the first end teeth and the second end teeth are respectively 8°-10°, and the second relief angles of the first end teeth and the second end teeth are respectively 18° ~20°.

As a preferred embodiment, the first relief edge width of the first end teeth and the second end teeth is 0.1 mm to 0.15 mm.

As a preferred embodiment, the relief width of the main cutting edge gradually decreases from 0.4 mm to 0.5 mm to 0.15 mm.

As a preferred embodiment, the relief angle of the main cutting edge is 10°-15°, and the relief angle of the secondary cutting edge is 23°-26°.

As a preferred embodiment, the outer diameter of the knife handle is 6mm-10mm, and the outer diameter of the knife head gradually decreases from 6mm-10mm to 0.8mm-1.5mm toward the knife tip.

As a preferred embodiment, the total length of the cutter head and the cutter handle is 50mm-100mm.

As a preferred embodiment, the cutting direction and rotation direction of the cutter head are rightward.

Compared with the prior art, the utility model has the beneficial effects of:

The utility model has a reasonable structure, adopts a sharp conical spiral blade design, high precision, good cutting effect, no sticking to the knife during processing, large spiral chip removal groove, unimpeded chip removal, no burr, good rigidity, high durability, It is not easy to break the knife, which effectively improves the processing efficiency and greatly reduces the scrap rate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present utility model. Those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is the structural representation of the novel miniature character knife that the utility model provides;

Fig. 2 is a schematic diagram of the tip structure of the novel mini-word knife provided by the utility model;

Fig. 3 is a sectional view of the tip of the novel miniature knife provided by the utility model.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, the embodiment of the present utility model provides a new type of miniature knife, including a cutter head 1 and a handle 2, the cutter head 1 is located at one end of the handle 2, the embodiment will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the total length of the cutter head 1 and the handle 2 can be set to 50mm-100mm, the cutter head 1 is tapered, the taper of the cutter head 1 is 16°-30°, and the outer diameter of the cutter head The direction of the tip gradually decreases from 6 mm to 10 mm to 0.8 mm to 1.5 mm, and the outer diameter of the handle 2 is 6 mm to 10 mm.

As shown in Figure 1, the surface of the cutter head 1 is provided with two helically arranged chip removal grooves 3, two helically arranged main cutting edges 4 and two helically arranged minor cutting edges 5, the main cutting edges 4 are located at the On the side of the groove 3, the secondary cutting edge 5 is located on the side of the main cutting edge 4, and the spiral direction of the chip flute 3, the main cutting edge 4 and the secondary cutting edge 5 are the same. In this embodiment, the cutting direction of the cutter head 1 and rotation can be set to right. The helix angles of the main cutting edge 4 , the secondary cutting edge 5 and the flute 3 may be 30° respectively.

The relief width of the main cutting edge 4 gradually decreases toward the tool tip. In this embodiment, the relief width of the main cutting edge 4 can gradually decrease from 0.4 mm to 0.5 mm to 0.15 mm.

As shown in FIG. 3 , the relief angle of the main cutting edge 4 is 10° to 15°, and the relief angle of the minor cutting edge 5 is 23° to 26°.

As shown in Figure 2, the tip of the cutter head 1 is provided with a first end tooth 6 and a second end tooth 7, the relief angle of the first end tooth 6 is 8°-10°, and the relief angle of the first end tooth 6 The blade width is 0.1mm-0.15mm, and the relief angle of the second end tooth 7 is 18°-20°.

In this embodiment, the reasonable design of the front and rear angles of the tool and the helix angle can greatly reduce the cutting force of the cutting edge, improve chip removal, and ensure that the tool has good rigidity.

In summary, the utility model has a reasonable structure, adopts sharp conical spiral blade design, high precision, good cutting effect, non-stick knife during processing, large spiral chip removal groove, smooth chip removal, no burr, good rigidity , high durability, not easy to break the knife, effectively improving the processing efficiency and greatly reducing the scrap rate.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (10)

1. a kind of novel mini word knife, including cutter head (1) and handle of a knife (2), the cutter head (1) is located at one end of handle of a knife (2), described Cutter head (1) is tapered, it is characterised in that：The surface of the cutter head (1) is equipped with the chip space (3) of two spirals setting, two spiral shells The end cutting edge (5) of the main cutting edge (4) and the setting of two spirals of setting is revolved, the main cutting edge (4) is located at chip space (3) Side, the end cutting edge (5) are located at the side of main cutting edge (4), the chip space (3), main cutting edge (4) and end cutting edge (5) the hand of spiral is identical, and the relief angle tread of the main cutting edge (4) is gradually decreased toward point of a knife direction, the knife of the cutter head (1) Tip position is equipped with the first end tooth (6) being centrosymmetric and the second end tooth (7).

2. the novel mini word knife of one kind according to claim 1, it is characterised in that：The taper of the cutter head (1) be 16 °~ 30°。

3. the novel mini word knife of one kind according to claim 1, it is characterised in that：The main cutting edge (4), end cutting edge (5) and the spiral angle of chip space (3) is respectively 30 °.

4. the novel mini word knife of one kind according to claim 1, it is characterised in that：First end tooth (6) and second end First relief angle of tooth (7) is respectively 8 °~10 °, and the second relief angle of first end tooth (6) and the second end tooth (7) is respectively 18 ° ~20 °.

5. the novel mini word knife of one kind according to claim 1, it is characterised in that：First end tooth (6) and second end First relief angle tread of tooth (7) is respectively 0.1mm~0.15mm.

6. the novel mini word knife of one kind according to claim 1, it is characterised in that：The relief angle sword of the main cutting edge (4) Width is gradually reduced to 0.15mm from 0.4mm~0.5mm.

7. the novel mini word knife of one kind according to claim 1, it is characterised in that：The relief angle of the main cutting edge (4) is 10 °~15 °, the relief angle of the end cutting edge (5) is 23 °~26 °.

8. the novel mini word knife of one kind according to claim 1, it is characterised in that：The outer diameter of the handle of a knife (2) be 6mm~ The outer point of a knife direction of directly going to of 10mm, the cutter head (1) are gradually reduced to 0.8mm~1.5mm from 6mm~10mm.

9. the novel mini word knife of one kind according to claim 1, it is characterised in that：The cutter head (1) and handle of a knife (2) it is total Length is 50mm~100mm.

10. the novel mini word knife of one kind according to claim 1, it is characterised in that：The cutting direction of the cutter head (1) and Rotation direction is to the right.