CN111823420A - Double-line cutting method and device for brittle and hard materials - Google Patents

Abstract

The invention relates to the field of processing of brittle and hard materials, and discloses a method and a device for double-line cutting of a brittle and hard material, wherein the method comprises the steps of fixing the brittle and hard material; setting the positions of a first cutting line and a second cutting line so that the first cutting line is positioned in front of the second cutting line in the cutting feeding direction; and controlling the first cutting line and the second cutting line or the brittle and hard material to move along the cutting feed direction, and cutting the brittle and hard material. According to the technical scheme, the cutting device comprises the first cutting line and the second cutting line, the first cutting line is located in front of the cutting feeding direction relative to the second cutting line, the brittle and hard material is cut through the first cutting line and the second cutting line, the second cutting line can cut or polish the cutting end face formed by cutting through the first cutting line for the second time, and the cutting effect and the cutting efficiency of the brittle and hard material can be greatly improved.

Description

Double-line cutting method and device for brittle and hard materials

Technical Field

The invention relates to the field of processing of brittle and hard materials, in particular to a method and a device for double-line cutting of a brittle and hard material.

Background

At present, diamond is mainly used for cutting and cutting brittle and hard materials such as stone, silicon crystal and the like. The wire saw is provided with a plurality of cutting guide wheels to form a cutting wheel system, the diamond wires are of an annular cutting wire structure with a closed head and tail, the diamond wires are distributed in guide wheel grooves of the cutting wheel system, and the cutting wheel system rotates to drive the diamond wires to do linear motion. The cutting action is generally only carried out in diamond wire lower half section, and the middle part of train is for avoiding train and material spindle to produce the interference, and the cutting train is fed by the linear motion module drive of installing in the frame usually to the realization cutting.

Wire saws such as diamond wires have high cutting precision, but the cutting end face of the cut brittle and hard material is rough, and subsequent processing such as coarse grinding, fine grinding and polishing is still needed to ensure the quality of the cutting end face, so that the cutting and processing procedures of the brittle and hard material are complex, and the production efficiency is low.

With the progress of pulling and other processes, the size of brittle and hard materials is larger and larger, and the structure of the wire saw needs to be enlarged to avoid the interference of a cutting wheel train and a material ingot, so that the cost is increased.

For example, patent application No. CN201780048352.6 discloses a method for slicing a silicon ingot, a method for manufacturing a silicon wafer, and its specification, paragraph 0062 discloses "next, in step S2, the obtained silicon ingot is subjected to an outer periphery grinding treatment to make the diameter uniform, and then the silicon ingot is sliced by the above-mentioned method for slicing a silicon ingot according to the present invention to obtain a silicon wafer by slicing the silicon ingot to a thickness of about 1 mm. "and 0065 discloses," then, in step S4, the obtained silicon wafer is transported to a polishing apparatus, and a polishing process is performed on the silicon wafer using an alumina polishing slurry or the like. "

Further, as disclosed in CN201280045340.5, paragraph 0079 of the specification discloses "as described above, in the present invention, it is possible to suppress the occurrence of local thinning of the starting cut portion of the workpiece particularly on the wire-collecting side where the pitch of the grooves is narrow, and to improve the TTV, and therefore, it is possible to reduce the machining allowance in the subsequent steps such as polishing and lapping. The technical schemes disclosed in the two patents both illustrate that in the prior art, the subsequent processing procedures of grinding or polishing after wire saw cutting of brittle and hard materials such as silicon crystal and the like have the problems of complex production procedures and low production efficiency.

Disclosure of Invention

Therefore, a brittle and hard material double-line cutting method needs to be provided for solving the technical problems of complex processing procedure and low processing efficiency of the brittle and hard material in the prior art.

In order to achieve the purpose, the invention provides a method for cutting a brittle and hard material by double wires, which comprises the following steps:

fixing the brittle and hard material;

setting the positions of a first cutting line and a second cutting line so that the first cutting line is positioned in front of the second cutting line in the cutting feeding direction;

and controlling the first cutting line and the second cutting line or the brittle and hard material to move along the cutting feed direction, and cutting the brittle and hard material.

Further, the step of arranging the positions of the first cutting line and the second cutting line further comprises the steps of: and adjusting the position of the first cutting line or the second cutting line to enable the second cutting line to deviate along the direction vertical to the cutting feeding direction, and performing secondary cutting or grinding on the cutting end face formed by cutting with the first cutting line.

Further, the distance between the first cutting line and the second cutting line is 50-1000mm, and the steps are as follows: adjusting the position of the first cut line or the second cut line such that the second cut line is offset perpendicular to the cut feed direction comprises:

controlling the first cutting line and the second cutting line to deflect relative to the cutting feeding direction, so that the inclination angle of the plane where the first cutting line and the second cutting line are located relative to the cutting feeding direction is 0.1-5 degrees; or

And ejecting the second cutting line along the direction vertical to the cutting feeding direction by using a cutting guide wheel, enabling the second cutting line to be close to the cutting end face formed by the first cutting line, and carrying out secondary cutting or grinding on the cutting end face formed by cutting the first cutting line.

Further, the second cutting line is offset in a direction perpendicular to the cutting feed direction by a distance less than or equal to the cutting groove width of the first cutting line.

Furthermore, the first cutting line and the second cutting line are driven by the same linear motion mechanism to move along the cutting feeding direction, and the first cutting line and the second cutting line are single lines respectively, or the first cutting line and the second cutting line are linear bodies of the same annular cutting line at different spatial positions.

Furthermore, the first cutting line and the second cutting line are arranged on the cutting guide wheel, and the line body rotates when the first cutting line and the second cutting line cut.

In order to solve the above technical problem, the present invention further provides another technical solution:

a twin wire cutting apparatus for brittle and hard materials comprising:

the clamping mechanism is used for fixing the brittle and hard material;

a cutting mechanism including a first cutting line and a second cutting line, the first cutting line being located forward of the second cutting line in a cutting feed direction;

and the linear motion mechanism is connected with the cutting mechanism or the clamping mechanism and is used for controlling the cutting mechanism or the clamping mechanism to move along the cutting feeding direction so as to cut the brittle and hard material.

Furthermore, the cutting mechanism further comprises an adjusting mechanism, and the adjusting mechanism is used for adjusting the position of the first cutting line or the second cutting line, so that the second cutting line deviates along the direction perpendicular to the cutting feeding direction, and secondary cutting or grinding is performed on the cutting end face formed by cutting the first cutting line.

Furthermore, the adjusting mechanism comprises a rotary adjusting mechanism, and the rotary adjusting mechanism is connected with mounting brackets of cutting gear trains of the first cutting line and the second cutting line and used for controlling the first cutting line and the second cutting line to deflect relative to the cutting feeding direction so that the second cutting line deflects along the direction perpendicular to the cutting feeding direction.

Furthermore, the rotary adjusting mechanism comprises a mounting bracket, a sliding rail and a sliding block, wherein the cutting guide wheels of the first cutting line and the second cutting line are mounted on the mounting bracket, and the top of the mounting bracket is movably connected with the sliding bracket through a hinge structure, so that the mounting bracket can adjust an included angle with the vertical direction around the hinge structure.

Furthermore, the adjusting mechanism comprises a top pressing type adjusting mechanism, the top pressing type adjusting mechanism comprises at least one top pressing wheel, and the top pressing wheel is arranged opposite to the cutting end face and used for pressing the second cutting line along the direction perpendicular to the cutting feeding direction to enable the second cutting line to deviate along the direction perpendicular to the cutting feeding direction.

Furthermore, the cutting mechanism comprises a cutting wheel train with a plurality of cutting guide wheels, the first cutting line and the second cutting line are arranged on the cutting guide wheels, the distance between at least two cutting guide wheels in the plurality of cutting guide wheels is adjustable, the first cutting line and the second cutting line are single lines respectively, or the first cutting line and the second cutting line are linear bodies of the same annular cutting line at different spatial positions.

Different from the prior art, above-mentioned technical scheme includes first cutting line and second cutting line, and first cutting line is located the place ahead of cutting feed direction for the second cutting line, cuts brittle and hard material through first cutting line and second cutting line, and the second cutting line can carry out secondary cutting or polish to the cutting end face that first cutting line cutting formed, can improve brittle and hard material's cutting effect and cutting efficiency greatly.

Furthermore, the technical scheme also adjusts the position of the second cutting line, so that the second cutting line deviates along the direction vertical to the cutting feeding direction, and the cutting line mark of the first cutting line or the formed burr is effectively cut.

Furthermore, according to the technical scheme, the first cutting line and the second cutting line rotate in the cutting process, so that the first cutting line and the second cutting line are in more uniform contact with the brittle and hard material, the service life of the cutting lines is effectively prolonged, and better economic benefits are achieved.

Furthermore, the distance between the cutting guide wheels of the first cutting line and the second cutting line is adjustable, so that the cutting of large-size brittle and hard materials can be met, the compact structure of cutting equipment can be ensured, and the manufacturing cost is reduced.

Drawings

FIG. 1 is a schematic view of the structure of a first cut line and a second cut line according to an embodiment;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the first cut line and the second cut line of the embodiment when cutting;

FIG. 4 is a flowchart illustrating steps of a method for twin wire cutting of brittle and hard materials according to an embodiment;

FIG. 5 is a schematic cross-sectional view taken along line A-A of FIG. 1 after adjustment of the first and second cut lines;

FIG. 6 is a schematic view of the first cut line and the second cut line as they are cut after adjustment of the first cut line and the second cut line according to an embodiment;

FIG. 7 is a schematic perspective view of a rotary adjustment mechanism according to an embodiment;

FIG. 8 is a side view of FIG. 7;

fig. 9 is a schematic perspective view of the top pressure adjusting mechanism according to the embodiment;

FIG. 10 is a side view of FIG. 9;

description of reference numerals:

11. a first cutting line;

12. a second cut line;

2. a brittle and hard material;

21. cutting an end face;

22. cutting the groove;

3. cutting guide wheels;

31. a pressing wheel is pressed;

32. mounting a bracket;

321. a hinge structure;

322. a fixed structure;

33. a sliding support;

34. a slide rail;

341. a slider;

100. a frame;

h1, the cutting groove width of the first cutting line;

h2, the cutting slot widths of the first and second cutting lines;

theta, the inclination angle of the plane where the first cutting line and the second cutting line are located relative to the cutting feeding direction;

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1 to 10, the present embodiment provides a method and an apparatus for double-wire cutting of brittle and hard material. Wherein, the brittle and hard material comprises one or more of stone, silicon crystal material, concrete and glass. The twin wire cutting method includes, but is not limited to, cutting using a first cutting wire 11 and a second cutting wire 12, wherein the first cutting wire 11 and the second cutting wire 12 may be diamond wires, or may be shaped cutting wires made of other high hardness materials. The first cutting line 11 and the second cutting line have a diameter ranging from 0.1 to 1.0mm depending on the brittle and hard material to be cut. According to the double-line cutting method, the brittle material is cut or polished by the first cutting line and the second cutting line, so that the cutting efficiency and the cutting effect are improved.

As shown in fig. 1, in the embodiment, the first cutting line 11 and the second cutting line 12 are schematic structural diagrams, in the embodiment, the first cutting line 11 and the second cutting line 12 are line bodies of the same annular cutting line at different spatial positions, the first cutting line 11 and the second cutting line 12 are arranged on a cutting wheel train, the cutting wheel train includes a plurality of cutting guide wheels 3, at least one of the cutting guide wheels 3 is connected to a driving device, the driving device may be a rotary power element such as a motor, and the like, and the driving device drives the first cutting line 11 and the second cutting line to run through the cutting guide wheels 3, so as to perform a brittle and hard material cutting process.

Referring to fig. 2 and 3, a first cutting line 11 and a second cutting line 12 are used for cutting the brittle and hard material, the first cutting line 11 is located in front of the cutting feed direction, and the second cutting line 12 is located behind the cutting feed direction relative to the first cutting line 11. Specifically, as shown in fig. 1 to 3, the direction indicated by the arrow X in the figures is a cutting feed direction, in the double-line cutting process, the first cutting line 11 and the second cutting line 12 are driven by a linear motion mechanism (i.e., a cutting feed mechanism) and move together along the cutting feed direction indicated by the arrow X, the first cutting line 11 performs a first cut on the brittle and hard material 2, and the second cutting line 12 performs a second cut or grinding on a cutting end surface 21 or a cutting groove 22 formed by cutting the first cutting line 11. In some embodiments, the first cutting line 11 and the second cutting line 12 are fixed in position, and the linear motion mechanism is connected to the holding device for holding the brittle-hard material 2, and is used to drive the holding device and the brittle-hard material 2 thereon to feed the cutting in the direction toward the first cutting line 11 and the second cutting line 12 (i.e., the direction opposite to the arrow X in fig. 1). Wherein, the linear speed interval when the first cutting line 11 and the second cutting line 12 cut is 15-160m/s, preferably, the optimal linear speed interval when the first cutting line 11 and the second cutting line 12 cut is 20-120 m/s.

In the above embodiment, the same cutting position of the brittle and hard material is cut by the first cutting line 11 and the second cutting line 12, so that two times of cutting can be performed by one time of cutting operation, and the second cutting line 12 can perform secondary cutting or polishing on the cutting line mark or burr on the cutting end surface 21 formed by the first dense cutting line 11, so that the flatness of the cutting end surface is greatly improved, and the cutting end surface does not need to be subjected to a polishing or burnishing process after the two-line cutting, or the workload of the polishing or burnishing process is greatly reduced.

In the embodiment shown in fig. 1, the first cutting line 11 and the second cutting line 12 are lines of the same circular cutting line at different spatial positions, i.e. the lower half of the circular cutting line in fig. 1 is the first cutting line 11, and the upper half is the second line. In other embodiments, the first cutting line 11 and the second cutting line 12 may also be single lines, i.e. the first cutting line and the second cutting line are each constituted by separate cutting lines, and the first cutting line and the second cutting line are each provided with a separate cutting wheel train and drive means.

As shown in fig. 4, a flowchart of a method for twin-wire cutting of brittle and hard material according to an embodiment of the present invention is shown, the method for twin-wire cutting of brittle and hard material includes the steps of:

s401, fixing the brittle and hard material 2;

s402, setting the positions of a first cutting line 11 and a second cutting line 12, and enabling the first cutting line 11 to be positioned in front of the second cutting line 12 in the cutting feeding direction;

and S403, controlling the first cutting line 11 and the second cutting line 12 or the brittle and hard material to move along the cutting feeding direction, and cutting the brittle and hard material.

In step S401, the brittle and hard material 2 may be clamped and fixed by an existing clamping device of a wire saw. The positions of the first cutting line 11 and the second cutting line 12 in step S402 may be set in advance before step S401, and the first cutting line 11 is in front of the second cutting line 12 in the cutting feed direction. The first and second cutting lines may be diamond wires having a diameter of 0.1 to 1.0, and the interval between the first cutting line 11 and the second cutting line 12 is 50 to 1000 mm. The cutting length of the first cutting line and the second cutting line is 50-2000mm, namely the first cutting line and the second cutting line can cut workpieces with the size of 50-2000 mm.

In step S403, the linear speed interval when the first cutting line and the second cutting line cut is 15-160m/S, and the optimal linear speed is 20-120 m/S. In step S403, as shown in fig. 1 to 3, the cutting feed direction (i.e., the direction indicated by the arrow X in the drawings) is fed from top to bottom along a vertical direction, that is, the first cutting line and the second cutting line cut the brittle-hard material from top to bottom. In other embodiments, the first cutting line 11 and the second cutting line 12 may be fed in a horizontal direction to cut the brittle and hard material, that is, the brittle and hard material is cut from one end to the other end in the horizontal direction. In addition, a clamping mechanism for brittle and hard materials can be arranged for fixation during cutting, and the linear motion mechanism drives the first cutting line and the second cutting line to feed for cutting; or the positions of the first cutting line and the second cutting line are fixedly arranged, and the linear motion mechanism drives the clamping mechanism and the brittle and hard materials on the clamping mechanism to feed in the directions of the first cutting line and the second cutting line for cutting; or the direct movement mechanism drives the first cutting line and the second cutting line and the clamping mechanism to move relatively simultaneously to cut.

According to the double-line cutting method for the brittle and hard material, the brittle and hard material is cut through the first cutting line and the second cutting line, the second cutting line can carry out secondary cutting or grinding on the cutting end face formed by cutting through the first cutting line, and the cutting effect and the cutting efficiency of the brittle and hard material can be greatly improved.

In step S403, the first cutting line and the second cutting line are mounted on a cutting guide wheel, and the first cutting line and the second cutting line rotate during cutting, so that the first cutting line and the second cutting line can uniformly contact and cut brittle and hard materials in the circumferential direction, the first cutting line and the second cutting line are uniformly worn, the service life of the cutting line is effectively prolonged, and better economic benefits are achieved.

As shown in fig. 5 and 6, in order to optimize the embodiment, unlike the above embodiment, in the present embodiment, not only the first cutting line 11 is disposed in front of the cutting feed direction of the second cutting line 12, but also the position of the second cutting line 12 is adjusted so that the position of the second cutting line 12 is offset in a direction perpendicular to the cutting feed direction, that is, moved by a certain distance in a direction indicated by an arrow Y in fig. 5 and 6, so that the second cutting line 12 can be brought into close contact with the cutting end face 21 generated by the first cutting line 11 cutting the brittle and hard material 2, thereby allowing the second cutting line 12 to perform secondary cutting or grinding on the cutting end face 21. In this embodiment, the position of the second cutting line 12 is adjusted to make the second cutting line offset in a direction perpendicular to the cutting feed direction, so that the cutting line mark of the first cutting line or the formed burr is effectively cut, and the flatness of the cut end face of the brittle and hard material is improved.

The offset of the second cutting line 12 in the vertical cutting feed direction by a certain distance can be controlled in the following manner.

As shown in fig. 7 and 8, a rotation adjustment mechanism may be provided in this embodiment to adjust the position of the first cutting line and the second cutting line. The rotary adjusting mechanism comprises a mounting bracket 32, a sliding bracket 33, a sliding rail 34 and a sliding block 341, wherein the cutting guide wheels 3 of the first cutting line 11 and the second cutting line 12 are mounted on the outer surface of the mounting bracket, the mounting bracket 32 is arranged opposite to the sliding bracket, and the top of the mounting bracket 32 is movably connected with the sliding bracket 33 through a hinge structure 321, so that the mounting bracket 32 can adjust an included angle with the vertical direction (namely, the cutting feeding direction) around the hinge structure 321. The sliding bracket 33 is slidably disposed on the rack 100 through a sliding rail 34 and a sliding block 341, wherein the sliding rail 34 extends in the vertical direction, so that the sliding bracket 33 and the mounting bracket 32 can slide in the vertical direction. In the present embodiment, the vertical direction is a cutting feed direction, and when the brittle and hard material is cut, the linear motion mechanism drives the rotary adjustment mechanism and the first cutting line 11 and the second cutting line 12 thereon to move from top to bottom for cutting. In addition, during cutting, the included angle between the mounting bracket 32 and the sliding bracket 33 (i.e. the included angle between the plane where the first cutting line and the second cutting line are located and the cutting feeding direction) can be adjusted, so that the second cutting line 12 is tightly attached to the cutting end surface 21 formed by cutting the first cutting line 11, and the line mark or burr on the cutting end surface 21 is cut off for the second time.

The plane where the first cutting line and the second cutting line are located is inclined by a certain angle theta relative to the cutting feeding direction, namely the angle between the mounting bracket 32 and the sliding bracket 33 is theta, wherein the angle theta is 0-20 degrees, and preferably, the optimal value of the inclination angle theta of the plane where the first cutting line and the second cutting line are located relative to the cutting feeding direction is 0.1-5 degrees. In one embodiment, a fixing structure 322 is further provided between the mounting bracket 32 and the sliding bracket 33 for fixing the inclination angle of the mounting bracket 32. Wherein, fixed knot constructs 322 and sets up in the side of installing support 32, including location strip and reference column, is provided with the spout on the location strip, the reference column is located the spout, and the reference column can be for the bolt of screwing, and the reference column can slide in the spout or lock arbitrary position in the spout.

In another embodiment, as shown in figures 9 and 10, a jack-type adjustment mechanism is provided to adjust the position of the second string. The top pressure type adjusting mechanism is additionally provided with a top pressure wheel 31 on the basis of the existing cutting wheel train, the first cutting line 11 and the second cutting line 12 are arranged on the cutting guide wheel 3 of the existing cutting wheel train, and the first cutting line 11 and the second cutting line 12 can be tensioned and driven to cut. The structure of the pressing wheel 31 is the same as that of the guide cutting wheel 3, a wire groove is formed in the wheel surface of the pressing wheel 31, the pressing wheel 31 is arranged opposite to the cutting end surface 21, that is, the pressing wheel 31 is arranged towards the cutting end surface 21, so that the pressing wheel can press the second cutting line 12 along the direction perpendicular to the cutting feeding direction (that is, along the direction indicated by the arrow Y in the figure), and the second cutting line 12 deviates along the direction perpendicular to the cutting feeding direction, so that the second cutting line 12 can effectively cut the cutting line mark of the first cutting line or the formed burr. Preferably, in order to enable the second cutting line 12 to contact with the whole cutting end surface 21, at least two groups of pressing wheels 31 are provided, and the two groups of pressing wheels 31 are arranged at two ends of the cutting working space of the second cutting line 12 at intervals and used for pressing the second cutting line to the cutting end surface.

Alternatively, in another embodiment, the first cutting wire and the second cutting wire are formed as the same circular cutting wire (as shown in fig. 1), the rotation adjusting mechanism or the pressing roller is not required, the cutting wheel train of the circular cutting wire has a plurality of cutting guide wheels, and the second cutting wire is deviated in the direction perpendicular to the cutting feed direction by merely adjusting the positional relationship of the cutting guide wheels 3 in the existing cutting wheel train of the wire saw, so as to be closely attached to the cutting end surface 21.

Or, in another embodiment, the first cutting line and the second cutting line are single lines, or the second cutting line can be deviated along the direction perpendicular to the cutting feeding direction only by setting the position of the second cutting line and the cutting wheel train thereof without setting the above-mentioned rotation adjusting mechanism or the pressing wheel.

In order to ensure the cutting or grinding effect of the second cutting line on the cut end face, the second cutting line 12 is offset perpendicular to the cutting feed direction by a distance which is less than or equal to the width h1 of the cutting groove 22 of the first cutting line. As shown in fig. 6, the width of the cutting groove formed by cutting the first cutting line 11 is h1, h2 is the width of the cutting groove formed by cutting the first cutting line and the second cutting line, h2 is less than or equal to twice the width of h1, wherein the second cutting line 12 is shifted in the direction indicated by the arrow Y by a distance less than or equal to h1, so that the second cutting line 12 is cut or ground on the surface of the cutting end face 21 formed by the first cutting line instead of forming another cutting groove and cutting end face on the brittle material.

Another embodiment provides a brittle and hard material double-wire cutting device, which is used for realizing the brittle and hard material double-wire cutting method. The double-line cutting device for the brittle and hard materials at least comprises a machine frame 100, a clamping mechanism, a cutting mechanism and a linear motion mechanism. The clamping mechanism can be a workpiece clamping mechanism of the existing wire saw and is used for fixing brittle and hard materials to be cut; the cutting mechanism is used for cutting the brittle and hard material, and comprises a first cutting line and a second cutting line, wherein the first cutting line is positioned in front of the second cutting line in the cutting feeding direction; the linear motion mechanism is connected with the cutting mechanism or the clamping mechanism and is used for controlling the cutting mechanism or the clamping mechanism to move along the cutting feeding direction so as to cut the brittle and hard material.

The first cutting line 11 and the second cutting line 12 are lines of the same annular cutting line at different spatial positions, that is, the lower half of the annular cutting line in fig. 1 is the first cutting line 11, and the upper half is the second line. In other embodiments, the first cutting line 11 and the second cutting line 12 may also be single lines, i.e. the first cutting line and the second cutting line are each constituted by separate cutting lines, and the first cutting line and the second cutting line are each provided with a separate cutting wheel train and drive means.

In the embodiment, the first cutting line 11 performs a first cutting on the brittle and hard material 2, and the second cutting line 12 performs a second cutting or polishing on the cutting end face 21 or the cutting groove 22 formed by cutting the first cutting line 11, so that cutting line marks or burrs on the cutting end face can be effectively cut off, the flatness of the cutting end face is greatly improved, and the cutting end face does not need to be subjected to a polishing or polishing process after the double cutting, or the workload of the polishing or polishing process is greatly reduced.

Wherein, the linear speed interval when the first cutting line 11 and the second cutting line 12 cut is 15-160m/s, preferably, the optimal linear speed interval when the first cutting line 11 and the second cutting line 12 cut is 20-120 m/s.

As shown in fig. 1 to 3, the cutting feed direction (i.e., the direction indicated by the arrow X in the figures) is fed from top to bottom along a vertical direction, i.e., the first cutting line and the second cutting line cut the brittle-hard material from top to bottom. In other embodiments, the first cutting line 11 and the second cutting line 12 may be fed in a horizontal direction to cut the brittle and hard material, that is, the brittle and hard material is cut from one end to the other end in the horizontal direction. In addition, a clamping mechanism for brittle and hard materials can be arranged for fixation during cutting, and the linear motion mechanism drives the first cutting line and the second cutting line to feed for cutting; or the positions of the first cutting line and the second cutting line are fixedly arranged, and the linear motion mechanism drives the clamping mechanism and the brittle and hard materials on the clamping mechanism to feed in the directions of the first cutting line and the second cutting line for cutting; or the direct movement mechanism drives the first cutting line and the second cutting line and the clamping mechanism to move relatively simultaneously to cut.

The cutting mechanism further comprises an adjusting mechanism, and the adjusting mechanism is used for adjusting the position of the first cutting line or the second cutting line, enabling the second cutting line to deviate along the direction perpendicular to the cutting feeding direction, and performing secondary cutting or grinding on a cutting end face formed by cutting of the first cutting line.

In one embodiment, the adjustment mechanism may be the rotational adjustment mechanism shown in fig. 7 and 8 described in the above embodiments.

In another embodiment, the adjusting mechanism may be a press-on adjusting mechanism as shown in fig. 9 and 10 described in the above embodiments.

Alternatively, in another embodiment, the first and second cutting wires are formed by the same circular cutting wire (as shown in fig. 1), the cutting wheel train of the circular cutting wire has a plurality of cutting guide wheels, the adjusting mechanism is only an improvement of the position of each cutting guide wheel 3 in the existing cutting wheel train of the wire saw, and the adjusted position of the cutting guide wheels causes the second cutting wire to be deviated in a direction perpendicular to the cutting feed direction so as to be closely attached to the cutting end surface 21.

Or, in another embodiment, the first cutting line and the second cutting line are single lines respectively, the adjusting mechanism is only modified by arranging the second cutting line and the position of the cutting wheel train thereof, and the second cutting line is deviated along the direction perpendicular to the cutting feeding direction after the second cutting line and the position of the cutting wheel train thereof are modified so as to be closely attached to the cutting end surface 21.

It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.

Claims (12)

1. A double-wire cutting method for brittle and hard materials is characterized by comprising the following steps:

fixing the brittle and hard material;

setting the positions of a first cutting line and a second cutting line so that the first cutting line is positioned in front of the second cutting line in the cutting feeding direction;

and controlling the first cutting line and the second cutting line or the brittle and hard material to move along the cutting feed direction, and cutting the brittle and hard material.

2. The method for twin wire cutting of a brittle and hard material as claimed in claim 1, characterized in that the positioning of the first cutting line and the second cutting line further comprises the steps of: and adjusting the position of the first cutting line or the second cutting line to enable the second cutting line to deviate along the direction vertical to the cutting feeding direction, and performing secondary cutting or grinding on the cutting end face formed by cutting with the first cutting line.

3. A method for twin wire cutting of brittle and hard material as claimed in claim 2, characterized in that the distance between the first cutting line and the second cutting line is 50-1000mm, the steps: adjusting the position of the first cut line or the second cut line such that the second cut line is offset perpendicular to the cut feed direction comprises:

controlling the first cutting line and the second cutting line to deflect relative to the cutting feeding direction, so that the inclination angle of the plane where the first cutting line and the second cutting line are located relative to the cutting feeding direction is 0.1-5 degrees; or

And jacking the second cutting line along the direction vertical to the cutting feeding direction by adopting a jacking wheel to enable the second cutting line to be close to the cutting end face formed by the first cutting line, and carrying out secondary cutting or polishing on the cutting end face formed by cutting the first cutting line.

4. A method for twin wire cutting of a brittle and hard material as claimed in claim 1, characterized in that the second cutting line is offset perpendicular to the cutting feed direction by a distance which is smaller than or equal to the cutting groove width of the first cutting line.

5. The method for cutting a brittle and hard material with two wires according to claim 1, characterized in that the first cutting line and the second cutting line are driven by the same linear motion mechanism to move along the cutting feed direction, the first cutting line and the second cutting line are respectively a single wire, or the first cutting line and the second cutting line are linear bodies of the same annular cutting line at different spatial positions.

6. The method for twin wire cutting of brittle and hard material as claimed in claim 1, characterized in that the first cutting wire and the second cutting wire are mounted on a cutter guide wheel, and the first cutting wire and the second cutting wire are subject to wire body rotation during cutting.

7. A twin wire cutting apparatus for brittle and hard materials, comprising:

the clamping mechanism is used for fixing the brittle and hard material;

a cutting mechanism including a first cutting line and a second cutting line, the first cutting line being located forward of the second cutting line in a cutting feed direction;

and the linear motion mechanism is connected with the cutting mechanism or the clamping mechanism and is used for controlling the cutting mechanism or the clamping mechanism to move along the cutting feeding direction so as to cut the brittle and hard material.

8. The apparatus according to claim 7, wherein the cutting mechanism further comprises an adjusting mechanism for adjusting the position of the first cutting line or the second cutting line so that the second cutting line is shifted in a direction perpendicular to the cutting feed direction, and performing a secondary cutting or grinding of the cutting end face cut by the first cutting line.

9. A twin wire cutting apparatus for brittle and hard material as claimed in claim 8, characterized in that the adjustment mechanism comprises a rotary adjustment mechanism, which is connected with the mounting brackets of the cutting wheel series of the first cutting wire and the second cutting wire for controlling the deflection of the first cutting wire and the second cutting wire relative to the cutting feed direction, so that the second cutting wire is deflected in a direction perpendicular to the cutting feed direction.

10. The apparatus for cutting a brittle and hard material as claimed in claim 9, wherein the rotation adjusting mechanism comprises the mounting bracket, a sliding rail and a sliding block, wherein the cutting guide wheels of the first cutting line and the second cutting line are mounted on the mounting bracket, and the top of the mounting bracket is movably connected with the sliding bracket through a hinge structure, so that the mounting bracket can adjust the included angle with the vertical direction around the hinge structure.

11. A brittle-hard material twin wire cutting device according to claim 8, characterized in that the adjusting mechanism comprises a press-on adjusting mechanism, which comprises at least one press wheel, which is arranged opposite the cutting end face and which is adapted to press the second cutting wire in a direction perpendicular to the cutting feed direction, so that the second cutting wire is deflected in a direction perpendicular to the cutting feed direction.

12. The apparatus as claimed in claim 7, wherein the cutting mechanism comprises a cutting wheel system having a plurality of cutting rollers, the first cutting wire and the second cutting wire are mounted on the cutting rollers, the distance between at least two cutting rollers is adjustable, the first cutting wire and the second cutting wire are single wires, or the first cutting wire and the second cutting wire are wires of the same circular cutting wire at different spatial positions.

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