Diamond Wire Cutting Method

Abstract

The present invention relates to a diamond wire cutting method, comprising: after the last cutting of the diamond wire, the old wire on the pay-off wheel is used to make up for the missing new wire, and then the wire is run from the pay-off wheel to the take-up wheel, wherein the length of the diamond wire involved in the running wire is L, and in the diamond wire with a length of L, the length L1 of the missing new wire is less than the length L2 of the old wire used for compensation, and L2 and L1 have a proportional relationship; the diamond wire with a length of L on the take-up wheel is run in the reverse direction from the take-up wheel to the pay-off wheel, so as to use the diamond wire with a length of L to make up for cutting the crystal rod again. Compared with the existing diamond wire cutting method, the diamond wire cutting method provided by the present invention makes up for the missing new wire with the old wire, and L2 is greater than L1, so that the cutting force of the diamond wire with a length of L is the same as or even greater than the cutting force of the previous times, and the crystal rod is cut again by the diamond wire with a length of L, and the new wire in the tail wire is used, and one more cutting is performed, thereby reducing the cutting cost.

Description

Technical Field

[0001] The invention relates to the technical field of crystal rod cutting, and in particular to a diamond wire cutting method. Background Art

[0002] The existing method is to wind the diamond wire on the pay-off wheel and the take-up wheel, and move the wire from the pay-off wheel to the take-up wheel to run the wire, and then cut the crystal rod in the process of returning from the take-up wheel to the pay-off wheel. After the last cut of the diamond wire, the length of the new wire in the tail wire of the diamond wire on the pay-off wheel is insufficient, and the wire cannot be run again, and the crystal rod cannot be cut again. The existing method is usually to scrap and throw away the tail wire on the pay-off wheel, but the cutting force of the new wire in the tail wire is stronger than that of the old wire. Directly scrapping it wastes the cutting force of this part of the new wire, increasing the cutting cost. Summary of the invention

[0003] Based on this, it is necessary to provide a diamond wire cutting method to address the problem of diamond wire tail wire waste.

[0004] A diamond wire cutting method, comprising:

[0005] When the diamond wire is cut for the last time;

[0006] The old line on the pay-off wheel is used to make up for the missing new line, and then the line is run from the pay-off wheel to the take-up wheel, wherein the length of the diamond wire involved in the running line is L, and in the diamond wire with a length of L, the length L1 of the missing new line is less than the length L2 of the old line used for compensation, and L2 and L1 have a proportional relationship;

[0007] The diamond wire with a length of L on the take-up wheel is routed in the reverse direction from the take-up wheel to the pay-off wheel, so as to use the diamond wire with a length of L to cut the crystal rod again.

[0008] In one embodiment, when calculating the ratio of L1 and L2:

[0009] Detect the length of the new wire used for cutting and the length of the old wire used for cutting under the same cutting force, and calculate the ratio of the length of the new wire used for cutting to the required length of the old wire under the same cutting force, that is, obtain the proportional relationship between L1 and L2;

[0010] In actual operation, the size of L2 corresponding to L1 can be obtained by converting the ratio.

[0011] In one embodiment, the cutting force of the diamond wire is reflected in the degree of bending change of the wire bow. The proportional relationship can be obtained by recording the degree of bending change of the wire bow when a new wire of unit length cuts a crystal rod, and then recording the length of the old wire used to cut the crystal rod under the condition of obtaining the same degree of bending change of the wire bow.

[0012] In one embodiment, the ratio is 1:2.5. In actual use, the ratio is reduced to enhance the cutting force of the diamond wire during supplementary cutting.

[0013] In one embodiment, when the diamond wire is brand new, the brand new diamond wire is installed on the pay-off wheel;

[0014] The new diamond wire runs from the pay-off wheel to the take-up wheel, so that the diamond wires on the take-up wheel are all new wires, wherein the length of the diamond wire involved in the running wire is M;

[0015] The diamond wire with a length of M on the take-up wheel is routed in the reverse direction from the take-up wheel to the pay-off wheel, so that the diamond wire with a length of M cuts the crystal rod for the first time;

[0016] When the diamond wire with a length of M finishes cutting the crystal rod and returns to the pay-off wheel, it becomes old wire and is rolled over and covered on the new wire that is about to run the next time. The diamond wire returns from the pay-off wheel to the take-up wheel, wherein the length of the returned diamond wire is M1, and M1<M, so that there is an old wire with a length of M1 on the take-up wheel.

[0017] In one embodiment, when the diamond wire is cut for the nth time, wherein n is a value greater than 1 and less than or equal to the number of times of the last cutting;

[0018] The diamond wire runs from the pay-off wheel to the take-up wheel, so that a part of the diamond wire on the take-up wheel is the old wire and the other part is the new wire, wherein the length of the diamond wire involved in each running is N, and N>M;

[0019] Part of the diamond wire with a length of N on the take-up wheel is routed in the reverse direction from the take-up wheel to the pay-off wheel to cut the crystal rod, and part of it is retained on the take-up wheel, wherein the length of the diamond wire involved in cutting is N1, the length of the diamond wire retained on the take-up wheel is N2, and part of the diamond wire with a length of N1 is new wire and part is old wire, and the diamond wire with a length of N2 is all old wire;

[0020] When the diamond wire with a length of N1 finishes cutting the crystal rod and returns to the pay-off wheel, it becomes old wire and is rolled over and covered on the new wire that is about to run the next time. The diamond wire returns from the pay-off wheel to the take-up wheel, wherein the length of the returned diamond wire is N3, and N3<N, so that the take-up wheel has an old wire with a length of M1+(n-1)*(N1+N3).

[0021] In one embodiment, the values ​​of M and N1 are set equal, the values ​​of M1, N2 and N3 are set equal, the ratio of N1 to N2 and the ratio of N1 to N3 are both set to 3:1, so that when the nth line running starts, 1 / 2 of the diamond wire with a length of N is the new wire and 1 / 2 is the old wire.

[0022] In one of the embodiments, during the running and / or routing process, the moving direction of the diamond wire is guided by a guide wheel provided between the pay-off wheel and the take-up wheel.

[0023] In one of the embodiments, during the process of cutting the crystal rod, a workpiece plate on the crystal rod is driven to move by a workbench, so that the crystal and the gold wire cooperate with each other to achieve cutting.

[0024] In one embodiment, when the workbench drives the workpiece plate to move, the workbench drives the workpiece plate to move at different degrees for different cutting times.

[0025] Beneficial effects of the present invention:

[0026] In the above-mentioned diamond wire cutting method, because the old wire also has cutting force, but the cutting force of the old wire is insufficient, L1 is made less than L2, and L1 and L2 are proportional. By increasing the length of the old wire involved in the cutting, the problem of insufficient cutting force of the old wire is compensated. After the diamond wire is cut for the last time, the old wire on the pay-off wheel is used to make up for the missing new wire, and then the wire is run from the pay-off wheel to the take-up wheel, and the length of the diamond wire involved in the running wire is made less than L2, and L1 and L2 are proportional; then the diamond wire with a length of L on the take-up wheel is run in the opposite direction from the take-up wheel to the pay-off wheel, so as to use the diamond wire with a length of L to cut the crystal rod again. Compared with the existing diamond wire cutting method, the diamond wire cutting method provided by the present invention uses the old wire to make up for the missing new wire, and L2 is greater than L1, so that the cutting force of the diamond wire with a length of L is the same as or even greater than the cutting force of the previous times, and the crystal rod is cut again by the diamond wire with a length of L, and the new wire in the tail wire is used, so that one more cut is made, which reduces the cutting cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the diamond wire running or routing provided in an embodiment of the present invention.

[0028] In the figure:

[0029] 100. Diamond wire;

[0030] 200, pay-off reel;

[0031] 300, take-up wheel;

[0032] 400. Crystal rod. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0039] New wire refers to a brand new diamond wire, old wire refers to a diamond wire that has been used to cut a crystal rod at least once, and tail wire refers to the remaining diamond wire on the pay-off wheel. In actual cutting, after the last cut, there are both old and new wires on the pay-off wheel, but the length of the new wire in the tail wire of the diamond wire on the pay-off wheel is insufficient, so it cannot be run again, and it is also impossible to cut the crystal rod again. Currently, the tail wire on the pay-off wheel is usually scrapped and thrown away, but the cutting force of the new wire in the tail wire is stronger than that of the old wire. Directly scrapping it wastes the cutting force of this part of the new wire, increasing the cutting cost.

[0040] In order to solve the above problems, an embodiment of the present invention provides a diamond wire cutting method, comprising: after the diamond wire 100 is cut for the last time; the old wire on the pay-off wheel 200 is used to make up for the missing new wire, and then the wire is run from the pay-off wheel 200 to the take-up wheel 300, wherein the length of the diamond wire 100 involved in the running line is L, and in the diamond wire 100 with a length of L, the length L1 of the missing new wire is less than the length L2 of the old wire used for compensation, and L2 and L1 have a proportional relationship; the diamond wire 100 with a length of L on the take-up wheel 300 is run in the reverse direction from the take-up wheel 300 to the pay-off wheel 200, so as to use the diamond wire 100 with a length of L to cut the crystal rod 400 again.

[0041] In the above-mentioned diamond wire cutting method, because the old wire also has cutting force, but the cutting force of the old wire is insufficient, L1 is made less than L2, and L1 and L2 are proportional, and the problem of insufficient cutting force of the old wire is compensated by increasing the length of the old wire involved in the cutting. After the diamond wire 100 is cut for the last time, the old wire on the pay-off wheel 200 is used to make up for the missing new wire, and then the wire is run from the pay-off wheel 200 to the take-up wheel 300, and the length of the diamond wire 100 involved in the run is made less than L2, and L1 and L2 are proportional; then the diamond wire 100 with a length of L on the take-up wheel 300 is run in the reverse direction from the take-up wheel 300 to the pay-off wheel 200, so as to use the diamond wire 100 with a length of L to cut the crystal rod 400 again. Compared with the existing diamond wire cutting method, the diamond wire cutting method provided by the present invention utilizes the old wire to make up for the lack of new wire, and L2 is greater than L1, so that the cutting force of the diamond wire 100 with a length of L is the same as or even greater than the cutting force of the previous times. The crystal rod 400 is cut again by the diamond wire 100 with a length of L, and the new wire in the tail wire is utilized, so that one more cutting is performed, thereby reducing the cutting cost.

[0042] Specifically, when calculating the proportional relationship between L1 and L2: detect the length of the new wire used for cutting and the length of the old wire used for cutting under the same cutting force, calculate the ratio of the length of the new wire used for cutting to the required length of the old wire under the same cutting force, that is, obtain the proportional relationship between L1 and L2; in actual operation, the size of L2 corresponding to L1 can be obtained by converting the ratio. Before actual cutting, first calculate the length of the new wire required for cutting and the length of the old wire required for cutting under the same cutting force, and then obtain the ratio of the length of the new wire used for cutting to the length of the old wire used for cutting, and thus obtain the proportional relationship between L1 and L2. When performing supplementary cutting, the length L1 of the new wire missing when performing the last supplementary cut is calculated, and the length L2 of the old wire used to make up for it is converted through a proportional relationship. In other words, the length L of the diamond wire 100 for a supplementary cut = the length of the new wire + the length L1 of the missing new wire + the length L2 of the old wire used to make up for it, and the length L of the diamond wire 100 for a supplementary cut is greater than the length of the diamond wire 100 used for cutting in the previous times.

[0043] In some embodiments, the cutting force of the diamond wire 100 is reflected in the degree of bending change of the wire bow. The degree of bending change of the wire bow when the new wire per unit length cuts the crystal rod 400 is recorded, and then the length of the old wire used to cut the crystal rod 400 under the condition of obtaining the same degree of bending change of the wire bow is recorded, and the proportional relationship can be obtained. First, the crystal rod 400 is cut with a new wire per unit length, and the degree of bending change of the wire bow during cutting is recorded. Then, the old wire is used to cut the crystal rod 400, and the length of the old wire required to obtain the same degree of bending change is recorded. The degree of bending change of the wire bow is the same, which means that the cutting force is the same. Therefore, under the condition of the degree of bending change of the wire bow, the ratio of the length of the new wire per unit length to the length of the old wire required can be calculated, and the ratio of the length of the new wire used for cutting to the length of the old wire required under the same cutting force can be obtained. In some embodiments, the cutting force of the diamond wire 100 can also be measured in other ways. As long as the ratio of the length of the new wire used for cutting to the length of the old wire required under the same cutting force is recorded, the proportional relationship between L1 and L2 can be obtained.

[0044] In some embodiments, the ratio is 1:2.5. In actual use, the ratio is reduced to enhance the cutting force of the diamond wire 100 during supplementary cutting. By calculation, it is found that the ratio of the length L1 of the missing new wire and the length L2 of the old wire used to make up is 1:2.5, that is, the cutting force of 1m of new wire is equivalent to the cutting force of 2.5m of old wire. If 1m of new wire is missing, 2.5m of old wire is needed to make up. In actual operation, the old wire has been cut at least once and has loss. If it is directly converted according to the ratio of 1:2.5, the cutting force of the length L2 of the old wire used to make up may be insufficient, affecting the effect of cutting the crystal rod 400. Therefore, in the last supplementary cutting, the ratio is reduced. For example, the ratio can be reduced to 1:3, that is, the cutting force of 1m of new wire is equivalent to the cutting force of 3m of old wire. By increasing the length of the old wire to make up for the loss of the old wire, the cutting force of the last cutting is enhanced.

[0045] In some embodiments, when making up, the length L1 of the missing new line is calculated, and the length L2 of the old line used to make up is obtained by conversion through the ratio of 1:2.5. Alternatively, the ratio of 1:2.5 can be directly used for conversion, which can also achieve the purpose of making up.

[0046] Further, when the diamond wire 100 is brand new, the brand new diamond wire 100 is installed on the pay-off wheel 200; the brand new diamond wire 100 runs from the pay-off wheel 200 to the take-up wheel 300, so that the diamond wire 100 on the take-up wheel 300 is all new wire, wherein the length of the diamond wire 100 involved in the running is M; the diamond wire 100 with a length of M on the take-up wheel 300 runs in the opposite direction from the take-up wheel 300 to the pay-off wheel 200, so that the diamond wire 100 with a length of M cuts the crystal rod 400 for the first time, when the diamond wire 100 with a length of M cuts the crystal rod 400 and returns to the pay-off wheel 200, it becomes an old wire, and is rolled and covered on the new wire that is about to run the next time, and the diamond wire 100 returns from the pay-off wheel 200 to the take-up wheel 300, wherein the length of the returned diamond wire 100 is M1, and M1<M, so that the take-up wheel 300 has an old wire with a length of M1. Before the first cut, a bundle of brand new diamond wires 100 is installed on the pay-off wheel 200, and then the diamond wires 100 are run from the pay-off wheel 200 to the take-up wheel 300, and then the diamond wires 100 with a length of M on the take-up wheel 300 are run in the reverse direction from the take-up wheel 300 to the pay-off wheel 200, so that the diamond wires 100 with a length of M cut the crystal rod 400 for the first time. In other words, the diamond wires 100 with a length of M and all new wires become old wires after cutting the crystal rod 400 during the process of running from the take-up wheel 300 to the pay-off wheel 200, and all are wound back on the pay-off wheel 200, and at this time, the old wires with a length of M are superimposed on the new wires of the next run. The wire is then returned from the pay-off wheel 200 to the take-up wheel 300 to return the old wire with a length of M1 to the take-up wheel 300, leaving only the old wire with a length of M-M1 on the pay-off wheel 200. This is to prevent the diamond wire 100 participating in the next wire running from being all old wires due to too much old wire on the pay-off wheel 200, thereby affecting the accuracy of cutting the crystal rod 400.

[0047] Further, when the diamond wire 100 is cut for the nth time, wherein n is a value greater than 1 and less than or equal to the number of the last cutting; the diamond wire 100 runs from the pay-off wheel 200 to the take-up wheel 300, so that a part of the diamond wire 100 on the take-up wheel 300 is an old wire and another part is a new wire, wherein the length of the diamond wire 100 participating in the running each time is N, and N>M; of the diamond wire 100 with a length of N on the take-up wheel 300, part of it is reversely routed from the take-up wheel 300 to the pay-off wheel 200 to cut the crystal rod 400, and part of it is left on the take-up wheel 300, wherein the length of the diamond wire 100 participating in the cutting is N1, the length of the diamond wire 100 retained on the take-up wheel 300 is N2, and part of the diamond wire 100 with a length of N1 is new wire and part is old wire, and the diamond wire 100 with a length of N2 is all old wire; when the diamond wire 100 with a length of N1 cuts the crystal rod 400 and returns to the pay-off wheel 200, it becomes old wire and is rolled and covered on the new wire that is about to run the next time, and the diamond wire 100 returns from the pay-off wheel 200 to the take-up wheel 300, wherein the length of the returned diamond wire 100 is N3, and N3<N, so that the take-up wheel 300 has an old wire with a length of M1+(n-1)*(N1+N3). When the nth cutting is performed, the wire is first run, so that the length of the diamond wire 100 involved in the running is N, and N>M, so that part of the diamond wire 100 involved in the running is new wire and part is old wire, so that part of the diamond wire 100 on the take-up wheel 300 is new wire and part is old wire, and then the diamond wire 100 with a length of N1 is reversed to cut the crystal rod 400, and the length of N2 is left on the take-up wheel 300. After cutting, the old wire with a length of N3 is returned from the pay-off wheel 200 to the take-up wheel 300 to reduce the amount of old wire on the pay-off wheel 200. At this time, the length of the old wire on the take-up wheel 300 is M1+(n-1)*(N1+N3).

[0048] It should be noted that, after the n-1th cutting is completed, the old line with a length of N1-N3 remains on the pay-off wheel 200 and is superimposed on the new line that will participate in the next line running. Therefore, when the nth line running is performed, the old line with a length of N1-N3 first runs to the take-up wheel 300, and then part of the new line runs to the take-up wheel 300. When reverse cutting is performed, the new line runs in the reverse direction first, and then the old line runs in the reverse direction. Therefore, when running the nth line, part of the diamond wire 100 with a length of N1 is new wire and part is old wire.

[0049] Specifically, the values ​​of M and N1 are set equal, the values ​​of M1, N2 and N3 are set equal, and the ratio of N1 to N2 and the ratio of N1 to N3 are set to 3:1, so that when the nth line is started, 1 / 2 of the length of the diamond wire 100 with a length of N is a new wire, and 1 / 2 of the length is an old wire. The values ​​of M and N1 are equal, and the length of the diamond wire 100 used for cutting each time from the first cutting to the last cutting is equal; the values ​​of M1 and N3 are equal, and the length of the diamond wire 100 returned each time from the first cutting to the last cutting is equal. The values ​​of M1, N2 and N3 are equal, and the ratio of N1 to N2 and the ratio of N1 to N3 are set to 3:1, so that when the nth line is started, 1 / 2 of the diamond wire 100 with a length of N is a new wire, and 1 / 2 of the diamond wire 100 is an old wire.

[0050] Here we take the example of the first cutting of a bundle of 100km long new wire, where M and N1 are 15km, N is 20km, and M1, N2 and N3 are all 5km;

[0051] A bundle of 100 km of new wire is installed on the pay-off wheel 200;

[0052] In the first run, the diamond wire 100 runs 15 km from the pay-off wheel 200 to the take-up wheel 300. After the run is completed, 85 km of diamond wire 100 remains on the pay-off wheel 200, and all of them are new wires. The take-up wheel 300 has 15 km of diamond wire 100, and all of them are new wires.

[0053] In the first routing, the 15KM long diamond wire 100 is routed in the reverse direction from the take-up wheel 300 to the pay-off wheel 200, so that the 15KM new wire is all used to cut the crystal rod 400. After the routing is completed, the diamond wire 100 on the take-up wheel 300 is 100KM, including 85KM new wire and 15KM old wire, and there is no diamond wire 100 on the take-up wheel 300;

[0054] In the first return, the 5KM long old wire is returned from the pay-off reel 200 to the take-up reel 300. After the return, the take-up reel 300 has 95KM of diamond wire 100, of which 85KM is new wire and 10KM is old wire. The take-up reel 300 has 5KM of diamond wire 100, and all of them are old wires.

[0055] In the second line running, the diamond wire 100 runs 20KM from the pay-off wheel 200 to the take-up wheel 300, wherein the pay-off wheel 200 has 75KM of diamond wire 100 remaining, and all of them are new wires. Among the diamond wires 100 participating in the line running, there are 10KM of new wires and 10KM of old wires. The take-up wheel 300 has 5KM of diamond wire 100, all of which are old wires. After the line running is completed, the pay-off wheel 200 has 75KM of new wires, and the take-up wheel 300 has 25KM of diamond wire 100, wherein 15KM are old wires and 10KM are new wires.

[0056] In the second routing, the 15KM long diamond wire 100 is routed in the reverse direction from the take-up wheel 300 to the pay-off wheel 200. Among the diamond wires 100 involved in the routing, there are 10KM new wires and 5KM old wires. After the routing is completed, the diamond wire 100 on the take-up wheel 300 is 90KM, including 75KM new wires and 15KM old wires. There is 10KM old wire on the take-up wheel 300.

[0057] The second time the wire is returned, the 5KM long old wire is returned from the pay-off wheel 200 to the take-up wheel 300. After the return is completed, the take-up wheel 300 has 85KM of diamond wire 100, of which 75KM is new wire and 10KM is old wire. The take-up wheel 300 has 15KM of old wire.

[0058] The third time of running the wire, the diamond wire 100 runs 20KM from the pay-off wheel 200 to the take-up wheel 300, wherein the pay-off wheel 200 has 65KM of diamond wire 100 remaining, and all of them are new wires. Among the diamond wires 100 participating in the running, there are 10KM of new wires and 10KM of old wires. The take-up wheel 300 has 15KM of diamond wire 100, and all of them are old wires. After the running is completed, the pay-off wheel 200 has 65KM of new wires, and the take-up wheel 300 has 35KM of diamond wire 100, of which 25KM are old wires and 10KM are new wires.

[0059] The third wire routing, 15KM long diamond wire 100 is routed in the reverse direction from the take-up wheel 300 to the pay-off wheel 200, wherein the diamond wire 100 involved in the routing includes 10KM new wire and 15KM old wire. After the routing is completed, the take-up wheel 300 has 80KM of diamond wire 100, including 65KM new wire and 15KM old wire, and the take-up wheel 300 has 20KM old wire.

[0060] The third time the wire is returned, the 5KM long old wire is returned from the pay-off wheel 200 to the take-up wheel 300. After the return is completed, the take-up wheel 300 has 75KM of diamond wire 100, of which 65KM is new wire and 10KM is old wire. The take-up wheel 300 has 25KM of old wire.

[0061] Repeat the cutting process several times.

[0062] In theoretical cutting, 100KM of new wire can be cut ten times, but in the cutting process from the first cut to the last cut, the diamond wire 100 is easy to break, and the diamond wire 100 needs to be repaired after breaking. Therefore, after the ninth cut, the new wire on the pay-off wheel 200 is less than 10KM, so the tenth cut cannot be performed. At this time, the old wire on the pay-off wheel 200 is used to make up for the missing new wire, so as to make up for one cut. For example, after the ninth cut, the new wire on the pay-off wheel 200 is 5KM, because in one cut, the length of the new wire must be at least 10KM, and the missing length of the new wire L1 is 5KM at this time. Therefore, according to the ratio of 1:3, the length L2 of the old wire used to make up is 15KM. Therefore, when making up for the cut, the length L of the diamond wire 100 for one cut = 10KM old wire + 5KM new wire + 15KM old wire (old wire L2 used to make up) = 30KM;

[0063] When performing a fill cut:

[0064] The pay-off wheel 200 runs 30 km of line toward the take-up wheel 300, at which time there are 5 km of new line and 25 km of old line;

[0065] The take-up wheel 300 moves 30 km in the reverse direction to the pay-off wheel 200 , and all of it is used to cut the crystal rod 400 .

[0066] It can be understood that in the first to ninth cutting processes, the length of the diamond wire 100 used for cutting is 15KM, of which 10KM is new wire and 5KM is old wire, and in the tenth supplementary cutting process, the length of the diamond wire 100 used for cutting is 30KM, of which 5KM is new wire and 25KM is old wire. The present application uses the old wire to make up for the lack of new wire, and calculates the length of the old wire L2 used for compensation according to the proportional relationship, so that the cutting force of the tenth cutting is the same as that of the previous cutting forces, or even greater.

[0067] Furthermore, during the running and / or routing process, the moving direction of the diamond wire 100 is guided by the guide wheel arranged between the pay-off wheel 200 and the take-up wheel 300. By arranging the guide wheel between the pay-off wheel 200 and the take-up wheel 300, the direction of the diamond wire 100 is guided to prevent the diamond wire 100 from deflecting.

[0068] Furthermore, during the process of cutting the crystal rod 400, the workbench drives the workpiece plate on the crystal rod 400 to move, so that the crystal and the gold wire cooperate with each other to achieve cutting. The workbench drives the workpiece plate to move, and the movement of the workpiece plate drives the crystal rod 400 to move, so that the movement of the diamond wire 100 and the movement of the crystal rod 400 cooperate with each other to achieve cutting of the crystal rod 400. For example, the direction of the routing is from right to left (such as Figure 1 The workpiece plate drives the crystal rod 400 to move from bottom to top (as shown in FIG. Figure 1As shown in FIG. 1 , when the diamond wire 100 is routed from right to left, the crystal rod 400 moves from bottom to top, thereby cutting the crystal rod 400 .

[0069] Specifically, when the workbench drives the workpiece plate to move, the workbench drives the workpiece plate to move at different speeds for different cutting times. For different cutting times, the workbench drives the workpiece plate to move at different speeds, that is, the workpiece plate drives the crystal rod 400 to move at different speeds, so as to improve cutting efficiency.

[0070] For example, the speed at which the worktable drives the workpiece plate to move is divided into three parts according to the process:

[0071] When the first cutting is performed, all the diamond wires 100 used for cutting are new wires. At this time, the table speed is 2.8 mm / min. Not only is the cutting force high (because it is a new wire, the cutting force is greater than that of the old wire), but the movement speed is also fast, which improves the cutting efficiency.

[0072] During the second to ninth cutting, there are 10km new wire and 5km old wire in the 15km diamond wire 100 used for cutting. Because of the 5km old wire, the cutting force is reduced. At this time, the table speed is reduced from 2.8mm / min to 1.2mm / min to compensate for the problem of insufficient cutting force.

[0073] When performing supplementary cutting (the tenth time), because the old wire is used to make up for the new wire and the old wire is a second-time used wire, the table speed is 0.5mm / min at this time.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A diamond wire cutting method, characterized in that: include: When the diamond wire is cut for the last time; The old line on the pay-off wheel is used to make up for the missing new line, and then the line is run from the pay-off wheel to the take-up wheel, wherein the length of the diamond wire involved in the running line is L, and in the diamond wire with a length of L, the length L1 of the missing new line is less than the length L2 of the old line used for compensation, and L2 and L1 have a proportional relationship; The diamond wire with a length of L on the take-up wheel is routed in the reverse direction from the take-up wheel to the pay-off wheel, so as to use the diamond wire with a length of L to cut the crystal rod again; When calculating the proportional relationship between L1 and L2: Detect the length of the new wire used for cutting and the length of the old wire used for cutting under the same cutting force, and calculate the ratio of the length of the new wire used for cutting to the required length of the old wire under the same cutting force, that is, obtain the proportional relationship between L1 and L2; In actual operation, the size of L2 corresponding to L1 can be obtained by converting the ratio; The cutting force of the diamond wire is reflected in the degree of bending change of the wire bow. The proportional relationship can be obtained by recording the degree of bending change of the wire bow when a new wire of unit length cuts the crystal rod, and then recording the length of the old wire used to cut the crystal rod under the condition of obtaining the same degree of bending change of the wire bow.

2. The diamond wire cutting method according to claim 1, characterized in that: The ratio is 1:2.

5. In actual use, the ratio is reduced to enhance the cutting force of the diamond wire during supplementary cutting.

3. The diamond wire cutting method according to claim 1, characterized in that: When the diamond wire is brand new, the brand new diamond wire is installed on the pay-off wheel; The new diamond wire runs from the pay-off wheel to the take-up wheel, so that the diamond wires on the take-up wheel are all new wires, wherein the length of the diamond wire involved in the running wire is M; The diamond wire with a length of M on the take-up wheel is routed in the reverse direction from the take-up wheel to the pay-off wheel, so that the diamond wire with a length of M cuts the crystal rod for the first time; When the diamond wire with a length of M finishes cutting the crystal rod and returns to the pay-off wheel, it becomes old wire and is rolled over and covered on the new wire that is about to run the next time. The diamond wire returns from the pay-off wheel to the take-up wheel, wherein the length of the returned diamond wire is M1, and M1<M, so that there is an old wire with a length of M1 on the take-up wheel.

4. The diamond wire cutting method according to claim 3, characterized in that: When the diamond wire is cut for the nth time, wherein n is a value greater than 1 and less than or equal to the number of times of the last cutting; The diamond wire runs from the pay-off wheel to the take-up wheel, so that a part of the diamond wire on the take-up wheel is the old wire and the other part is the new wire, wherein the length of the diamond wire involved in each running is N, and N>M; Part of the diamond wire with a length of N on the take-up wheel is routed in the reverse direction from the take-up wheel to the pay-off wheel to cut the crystal rod, and part of it is retained on the take-up wheel, wherein the length of the diamond wire involved in cutting is N1, the length of the diamond wire retained on the take-up wheel is N2, and part of the diamond wire with a length of N1 is new wire and part is old wire, and the diamond wire with a length of N2 is all old wire; When the diamond wire with a length of N1 finishes cutting the crystal rod and returns to the pay-off wheel, it becomes old wire and is rolled over and covered on the new wire that is about to run the next time. The diamond wire returns from the pay-off wheel to the take-up wheel, wherein the length of the returned diamond wire is N3, and N3<N, so that the take-up wheel has an old wire with a length of M1+(n-1)*(N1+N3).

5. The diamond wire cutting method according to claim 4, characterized in that: The values ​​of M and N1 are set to be equal, the values ​​of M1, N2 and N3 are set to be equal, the ratio of N1 to N2 and the ratio of N1 to N3 are both set to 3:1, so that when the nth line running starts, 1 / 2 of the diamond wire with a length of N is the new wire and 1 / 2 is the old wire.

6. The diamond wire cutting method according to claim 1, characterized in that: During the wire running and / or wire routing process, the moving direction of the diamond wire is guided by a guide wheel arranged between the wire pay-off wheel and the wire take-up wheel.

7. The diamond wire cutting method according to claim 1, characterized in that: During the process of cutting the crystal rod, the workpiece plate on the crystal rod is driven to move by the workbench, so that the crystal rod and the diamond wire cooperate with each other to achieve cutting.

8. The diamond wire cutting method according to claim 7, characterized in that: When the workbench drives the workpiece plate to move, the speed at which the workbench drives the crystal rod workpiece plate to move is different for different cutting times.

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