CN104802198A

CN104802198A - Self-sharpening circular knife

Info

Publication number: CN104802198A
Application number: CN201510232188.7A
Authority: CN
Inventors: 刘伟; 仲益; 栾华健; 李芳�
Original assignee: SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
Current assignee: SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2015-07-29

Abstract

The invention relates to a self-sharpening circular knife in the shape of a rounded body, a mounting hole is formed in the middle of the circular knife, a key slot is formed at the position of the mounting hole, a single-face edged structure is arranged on the periphery of the round body, an included angle, namely a sharp angle, is formed between an edge surface and a mounting surface, and the sharp angle is between 5-7.5 degrees; a concave surface is arranged on the other side of a cutting edge, an included angle, namely a concave angle, is formed between the concave surface and the mounting surface, and the concave angle is between 0.5-1 degree. The self-sharpening circular knife adopts the asymmetric single-face edged structure, the concave surface is arranged on the other side of the cutting edge, so friction is reduced further, and a material deformation space is provided on one side. When the knife is evenly abraded, a new cutting edge forms, the geometrical parameter change of the new cutting edge is small, so the service life of the knife is greatly prolonged. When the knife is unevenly abraded, a new cutting edge forms and can continue to keep sharp, so the knife can continue to be used, and compared with the traditional circular knife when being used for processing carbon fiber composites CFRP, the service life of the self-sharpening circular knife is prolonged by 1-2 times.

Description

Self-sharpening dise knife

Technical field

The present invention relates to a kind of self-sharpening dise knife, for processing such as printing, papermaking, carton, forestry, rubber, plastics, weavings, belong to high-speed and high-efficiency cutting tool technical field.

Background technology

At present, dise knife is also called circular knife, the rounded shape of profile, thinner thickness, in the form of sheets.Dise knife is mainly used in the processing such as cutting, deburring.Dise knife all has interstitial hole usually, and object can be arranged in plant equipment, is called installing hole.Indivedual installing hole is also provided with keyway, is convenient to transmission, thus reach cutting function.

Traditional circular knife is mostly two-sided to put the first edge on a knife or a pair of scissors, symmetrically structure.In use, the dise knife of symmetrical structure, at cutting edge place owing to being subject to both surface friction, when cutting carbon fibre composite CFRP, be easy to wear and tear, the life-span is very low, reduces mechanical service efficiency.

Therefore, be necessary to design and develop a kind of self-sharpening dise knife for carbon fibre composite CFRP, to reduce the cost of charp tool, improve mechanical efficiency.

Summary of the invention

The object of the invention is the deficiency overcoming prior art existence, a kind of self-sharpening dise knife is provided, is particularly suited for cutting of carbon fibre composite CFRP.

Object of the present invention is achieved through the following technical solutions:

Self-sharpening dise knife, feature is: rounded body structure, installing hole is had in the middle of it, installing hole place is provided with keyway, the periphery of described round has one side and to put the first edge on a knife or a pair of scissors structure, and its put the first edge on a knife or a pair of scissors face and installed surface form angle and sharp angle, and the angle of sharp angle is 5 ° ~ 7.5, its cutting edge opposite side is set to concave surface, and concave surface and installed surface form angle and re-entrant angle.

Further, above-mentioned self-sharpening dise knife, wherein, the angle of described re-entrant angle is 0.5 ° ~ 1 °.

Further, above-mentioned self-sharpening dise knife, wherein, described in side, face of putting the first edge on a knife or a pair of scissors be provided with coating.

The substantive distinguishing features that technical solution of the present invention is outstanding and significant progress are mainly reflected in:

Adopt the unsymmetric structure that one side puts the first edge on a knife or a pair of scissors, opposite side is set to concave surface, reduces friction further, and provides the deformation space of machined material in side.When cutter generation uniform wear, can form new cutting edge, the geometric parameter change of new cutting edge is very little, significantly can improve cutting-tool's used life.When cutter generation irregular wear, the new cutting edge of formation, can continue to keep sharp, still can continue to use.More traditional dise knife is when processing carbon fibre composite CFRP, and the life-span improves 1 ~ 2 times.Also be applicable to the processing of the materials such as paper product, plastics, chemical fibre, aluminium foil, range of application is wider.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, technical solution of the present invention is described further:

Fig. 1: schematic side view of the present invention;

Fig. 2: schematic front view of the present invention;

The close-up schematic view of Fig. 3: Fig. 2;

Fig. 4: using state schematic diagram;

Fig. 5: another using state schematic diagram.

Detailed description of the invention

As shown in Figure 1 and Figure 2, self-sharpening dise knife, rounded body structure, installing hole 1 is had in the middle of it, installing hole 1 is for installing, installing hole place is provided with keyway 2, keyway 2 is for transmitting power, the periphery of round has one side and to put the first edge on a knife or a pair of scissors structure, and as Fig. 3, it is cutting edge 7 that face 3 of putting the first edge on a knife or a pair of scissors forms intersection with concave surface 5, its face 3 of putting the first edge on a knife or a pair of scissors forms angle and sharp angle B with installed surface 4, the angle of sharp angle B is 5 ° ~ 7.5, and concave surface 5 and installed surface 6 that its cutting edge opposite side is arranged form angle and re-entrant angle A, and the angle of re-entrant angle A is 0.5 ° ~ 1 °.The face side of putting the first edge on a knife or a pair of scissors is provided with coating.

In use, if uniform wear occurs in face 3 of putting the first edge on a knife or a pair of scissors, i.e. uniform wear face C, as shown in Figure 4, then can form new cutting edge 8, and the geometric parameter change of this stylish cutting edge 8 is very little, greatly can improve cutting-tool's used life.

In use, if irregular wear occurs in face 3 of putting the first edge on a knife or a pair of scissors, i.e. irregular wear face D, as shown in Figure 5, is generally more larger close to cutting edge wearing and tearing situation, now, still can forms new cutting edge 8, and new cutting edge 8 can continue to keep sharp, still can continue to use.

Adopt the unsymmetric structure that one side puts the first edge on a knife or a pair of scissors, opposite side is set to concave surface, reduces friction further, and provides the deformation space of machined material in side.When cutter generation uniform wear, can form new cutting edge, the geometric parameter change of new cutting edge is very little, significantly can improve cutting-tool's used life.When cutter generation irregular wear, the new cutting edge of formation, can continue to keep sharp, still can continue to use.Putting the first edge on a knife or a pair of scissors, coating process is carried out in side, improves case hardness and wearability further.Through overtesting, the more traditional dise knife of the present invention is when processing carbon fibre composite CFRP, and the life-span improves 1 ~ 2 times.Also be applicable to the processing of the materials such as paper product, plastics, chemical fibre, aluminium foil, range of application is wider.

It is to be understood that: the above is only the preferred embodiment of the present invention; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. self-sharpening dise knife, it is characterized in that: rounded body structure, installing hole is had in the middle of it, installing hole place is provided with keyway, the periphery of described round has one side and to put the first edge on a knife or a pair of scissors structure, and its put the first edge on a knife or a pair of scissors face and installed surface form angle and sharp angle, and the angle of sharp angle is 5 ° ~ 7.5, its cutting edge opposite side is set to concave surface, and concave surface and installed surface form angle and re-entrant angle.

2. self-sharpening dise knife according to claim 1, is characterized in that: the angle of described re-entrant angle is 0.5 ° ~ 1 °.

3. self-sharpening dise knife according to claim 1, is characterized in that: described in side, face of putting the first edge on a knife or a pair of scissors be provided with coating.