CN210099790U

CN210099790U - Diamond scribing knife

Info

Publication number: CN210099790U
Application number: CN201920552947.1U
Authority: CN
Inventors: 梁振廷; 龚胜; 胡天; 尹韶辉; 李刚
Original assignee: Changsha Huateng Intelligent Equipment Co Ltd
Current assignee: Changsha Huateng Intelligent Equipment Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-02-21
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a diamond scribing knife, which comprises an annular blade 1, wherein a cutting surface 2 is fixed on the outer edge of the annular blade 1, and the diamond scribing knife is characterized in that two side surfaces at the outer end of the cutting surface 2 are outwards protruded along the axial direction of the annular blade 1 to form an outer convex part 6 protruding out of the side surface of the annular blade 1; the side surface of the outer convex part 6 is vertical to the outer end surface of the cutting surface 2; the thickness of the outer end face of the cutting surface 2 is wider than that of the annular blade 1. The utility model discloses simple structure, convenient to use, the cutting effect is good, and long service life has solved because the side that blade side wearing and tearing brought hangs down the unqualified problem and has reduced because edge breakage and the mar problem that the secondary cutting leads to in blade side to can prevent that the oblique cutting that blade side wearing and tearing lead to, the side is hung down unqualified problem.

Description

Diamond scribing knife

Technical Field

The utility model belongs to a blade is drawn to diamond is applicable to in the optical glass cutting to collapsing limit and the higher field of requirement that hangs down of side.

Background

As shown in fig. 1, a conventional diamond dicing blade is formed of diamond particles and a binder, and has a ring shape. According to different types of bonding agents, the knife is divided into a resin knife, a metal knife and an electroplating knife. Among the blades suitable for optical glass cutting are resin blades and metal blades. The resin bond diamond grinding wheel is a grinding tool which is prepared by taking synthetic resin or natural resin as a bonding agent, adding proper auxiliary materials and diamond grinding materials according to a series of technological processes, has regular size and geometric shape and can meet the grinding processing requirements of workpieces. When the resin knife is used for cutting optical glass, the broken edge of the glass can be cut best by using the resin knife because the bonding agent has good physical properties and can reduce the broken edge to the maximum extent. The metal bond diamond grinding wheel is a grinding tool prepared from diamond grinding materials and metal bond. Strong holding capacity to diamond and good wear resistance. In the field of optical glass cutting, the wear-resistant glass cutting tool is widely used for cutting glass due to good wear resistance and long service life.

The resin cutter is easy to wear and short in service life due to the insufficient holding force of the resin bonding agent on the diamond particles, and the application of the resin cutter in the field of optical glass cutting is limited. When the metal knife cuts the optical glass, edge breakage is easily generated. With the development of the optical glass industry, the requirements on the cutting quality of cut optical glass such as edge breakage and side sagging are higher and higher, and the components of a blade bonding agent must be improved or the blade structure must be optimized to meet the cutting requirements.

Since the optical glass is cut primarily using the cutting surface 2 at the outer edge of the ring blade 1 as shown in fig. 2, the blade side surface 3 plays a secondary role of cutting. Because the side surface 3 of the blade participates in cutting, the abrasive particles on the side surface are worn and dropped, so that the side surface of the blade forms a V shape, and the side hang is unqualified, the edge breakage is increased, and the scratches of the cutting surface are increased. The sagging is not good, i.e. the material (glass) side 4 is not perpendicular to the bottom 5, as shown in fig. 3.

In summary, the conventional optical glass cutting process is prone to edge breakage and side-hanging failure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a novel diamond scribing knife, the utility model discloses simple structure, convenient to use, the cutting effect is good, and long service life has solved because the side that blade side wearing and tearing brought hangs down unqualified problem and has reduced because the edge breaking and the mar problem that blade side secondary cutting leads to can prevent that the oblique cutting that blade side wearing and tearing lead to, the side is unqualified problem that hangs down.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a diamond scribing knife comprises an annular blade 1, wherein a cutting surface 2 is fixed on the outer edge of the annular blade 1, and the diamond scribing knife is characterized in that two side surfaces at the outer end of the cutting surface 2 are outwards protruded along the axial direction of the annular blade 1 to form an outer protrusion 6 protruding out of the side surface of the annular blade 1; the side surface of the outer convex part 6 is vertical to the outer end surface of the cutting surface 2; the thickness of the outer end face of the cutting surface 2 is wider than that of the annular blade 1.

In a further improvement, the section of the annular blade 1 and the section of the cutting surface 2 form a T-shaped structure.

In a further improvement, diamond abrasive particles are fixed on the surface of the cutting surface 2.

In a further improvement, a through hole 7 is formed in the annular blade 1, the inner diameter of the through hole 7 is 40mm, the outer diameter of the annular blade 1 is 56mm, the axial thickness of the annular blade 1 is 0.18mm, the axial thickness of the outer end face of the cutting surface 2 is 0.2mm, and the radial thickness of the outer convex part 6 is 0.3 mm. .

In a further improvement, the annular blade 1 is a metal blade.

The utility model has the advantages as follows:

the problem of unqualified side sag caused by the abrasion of the side surface of the blade and the problems of edge breakage and scratch caused by the secondary cutting of the side surface of the blade can be solved. The cutting edge is shortened, and meanwhile, the cutting edge does not contain optical glass during cutting, so that the problems of beveling and unqualified side sag caused by abrasion of the side surface of the blade can be prevented. The side surface of the cutting edge is shortened, so that the abrasive grains participating in the secondary cutting are reduced, and the edge breakage and the scratch are reduced. The blade of the old construction was used and was discarded because the blade side was worn, resulting in the blade forming a V-shaped side. A new blade with an old structure can cut 9 disks of workpieces, each disk of workpieces is worn by 3 mu m, and the total wear is about 27 mu m. By using the new structure blade, the cutting edge length is 0.3mm, so that the blade can cut longer and has longer service life.

Drawings

FIG. 1 is a schematic axial view of a prior art ring blade;

FIG. 2 is a schematic diagram of a prior art circular blade for cutting material;

FIG. 3 is a schematic view of a laterally-suspended unqualified material

Fig. 4 is an axial structural schematic diagram of the present invention;

fig. 5 is a schematic sectional structure of the present invention;

fig. 6 is a schematic structural diagram of the utility model for cutting materials.

FIG. 7 is a surface topography of a cutting surface;

fig. 8 is a graph of the cut surface roughness Ra. Where the facet accuracy is defined as the deviation from the ideal facet in units of wavelength, divided by RMS and PV. RMS-root mean square (value); peak Value maximum difference Value/Peak.

Detailed Description

The present invention will be further described with reference to the following examples.

Example 1

For a metal knife with an outer diameter of 56mm, an inner diameter of 40mm and a ring blade 1 with a thickness of 0.18mm, the length of the cutting edge is set to be 0.3mm and the thickness is 0.2 mm.

When the blade is used for cutting, the highest point of the blade is lower than the bottom surface of the glass workpiece, namely the blade is completely immersed in the glass. By using the blade structure and the cutting process, the beveling phenomenon caused by the abrasion of the side surface of the blade can be avoided, and no matter how the side surface of the blade is abraded, because the blade is immersed into glass, the cutting surfaces at two sides of the blade can not form a V shape, so that the structure can structurally avoid the unqualified side sag.

Because only the short cutting edge participates in cutting, the secondary cutting of the diamond abrasive particles on the side surface of the blade to the cutting surface is small, and edge breakage and scratches caused by the secondary cutting of the optical glass by the non-uniform diamond abrasive particles on the side surface of the blade can be reduced.

Example 2

A FAD1210A full-automatic single-shaft scribing machine produced by Changsha Huateng intelligent equipment Limited is used, the rotating speed of a main shaft is 25000rpm, the cutting speed is 1.5mm/s, the cutting depth is 1.2mm, and the material is K9 glass. Use the utility model discloses this optical glass of configuration optimization's metal sword cutting.

Measuring edge breakage by using a stm6 metallographic microscope, wherein the edge breakage is less than 10 micrometers; the dimensional deviation was measured using this microscope to be less than 5 μm. As shown in FIG. 6, the surface roughness Ra of the cut surface was measured to 10.306nm using a new view 7100 white light interferometer.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept, and these all fall into the protection scope of the present invention.

Claims

1. A diamond scribing knife comprises an annular blade (1), wherein a cutting surface (2) is fixed on the outer edge of the annular blade (1), and the diamond scribing knife is characterized in that two side surfaces at the outer end of the cutting surface (2) are outwards protruded along the axial direction of the annular blade (1) to form an outer convex part (6) protruding out of the side surface of the annular blade (1); the side surface of the outer convex part (6) is vertical to the outer end surface of the cutting surface (2); the thickness of the outer end face of the cutting surface (2) is wider than that of the annular blade (1).

2. The diamond saw blade according to claim 1, wherein the cross section of the ring blade (1) and the cross section of the cutting face (2) form a T-shaped structure.

3. The diamond saw blade according to claim 1, wherein diamond abrasive grains are fixed to the surface of the cutting face (2).

4. The diamond scribing cutter according to claim 1, wherein the annular blade (1) is internally formed with a through hole (7), the through hole (7) has an inner diameter of 40mm, the annular blade (1) has an outer diameter of 56mm, the annular blade (1) has an axial thickness of 0.18mm, the outer end surface of the cutting surface (2) has an axial thickness of 0.2mm, and the outer protrusion (6) has a radial thickness of 0.3 mm.

5. The diamond scribing blade according to claim 1, wherein said annular blade (1) is a metal blade.