CN115008322B - Diamond wire cutting device - Google Patents
Diamond wire cutting device Download PDFInfo
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- CN115008322B CN115008322B CN202210764301.6A CN202210764301A CN115008322B CN 115008322 B CN115008322 B CN 115008322B CN 202210764301 A CN202210764301 A CN 202210764301A CN 115008322 B CN115008322 B CN 115008322B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
- B24B27/0633—Grinders for cutting-off using a cutting wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
- B24B27/0683—Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The embodiment of the application provides a diamond wire cutting device, which is used for respectively obtaining a tangential angle of a cutting point and a distance between the cutting point and a preset rotating shaft by acquiring a preset path to be cut, and calculating a rotating angle of the corresponding preset rotating shaft of the cutting point in the preset path to be cut; and controlling the rotation of the material to be cut according to the rotation angle of the preset rotation shaft, so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface. Therefore, the angle of the cut material and the diamond wire walking is automatically adjusted in an indexing mode according to the curve change of the shape surface, the direction of each cutting point of the diamond wire walking is consistent with the tangential direction of the shape surface at the position and is coplanar with the standard cutting surface, and therefore a stable wire bow is maintained, the size and the direction of the wire bow are controllable, the problem that a theoretical cutting pattern and an actual cutting pattern are not matched due to the change of the diamond wire bow is avoided, and the high-precision shape surface cutting of the diamond wire is realized.
Description
Technical Field
The application relates to the technical field of diamond wire cutting, in particular to a diamond wire cutting device.
Background
The conventional diamond-shaped surface cutting is realized by performing curve feeding by utilizing the linkage of an X axis and a Y axis. This method has certain drawbacks. Compared with the materials, the cutting tool always keeps the same direction and position, and when the cut materials are fed in a curve, resistance is generated on the diamond wire along the tangential direction of the cutting point on the curve, so that the diamond wire generates a wire bow along the direction. The wire bow may be angled with respect to the slot centerline of the cutting guide (see fig. 1). The tangential direction of the various points of the curve is not the same, which results in the direction of the bow thus produced when cutting constantly changing. The continuous change of the wire bow direction causes the swinging oscillation of the diamond wire, and the oscillation change of the cutting resistance is caused. These variations cause uncontrollable wire bow direction and size, eventually causing the actual cutting position to deviate from the preset travel trajectory, resulting in reduced cutting accuracy. Vibration in the cutting process can also cause the occurrence of problems such as broken wires, off wires and the like, and the failure rate is high.
Disclosure of Invention
The embodiment of the application provides a diamond wire cutting device which aims at solving the problem of curve cutting. The wire bow forms a certain angle with the center line of the wheel groove of the cutting guide wheel, and the direction and the size of the wire bow are continuously changed in the cutting process, so that the actual cutting position deviates from the preset walking track.
In order to achieve the above purpose, the present application provides the following technical solutions:
a wire cutting device comprising:
the cutting assembly is used for cutting materials to be cut;
the material loading assembly is used for clamping and fixing the material to be cut;
the control component is respectively connected with the cutting component and the material carrying component, and is used for controlling the cutting surface and/or the material to be cut to rotate around a preset rotating shaft according to a preset path to be cut so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located.
Optionally, a rotary power drive assembly is further included, the rotary power drive assembly comprising:
the rotary power piece is connected with the control assembly;
one end of the rotary driving piece is connected with the rotary power piece, and the other end of the rotary driving piece is connected with the cutting assembly;
the control component controls the action of the rotary power component so as to drive the rotary driving component to drive the cutting component to rotate.
Optionally, the material carrying component is connected with the control component and used for controlling the material carrying component to travel along the preset path to be cut.
Optionally, the loading assembly includes:
a material carrying platform;
the clamping assembly is used for clamping the material to be cut; the clamping assembly is positioned on the material carrying platform;
the control assembly is connected with the material carrying platform and used for controlling the material carrying platform to move along the preset path to be cut.
Optionally, the method further comprises:
the first direction driving assembly is positioned at the bottom of the material carrying platform, wherein the first direction is parallel to the plane of the cutting line of the cutting assembly; the first direction driving component is connected with the control component so as to drive the material carrying platform to move along a first direction;
the second direction driving assembly is positioned at the bottom of the material carrying platform, wherein the second direction is perpendicular to the plane of the cutting line of the cutting assembly; the second direction driving assembly is connected with the control assembly to drive the material carrying platform to move along a second direction.
Optionally, the second direction driving assembly is fixed at the bottom of the loading platform, and the first direction driving assembly is fixed at the bottom of the second direction driving assembly.
Optionally, the rotary power piece is a servo motor;
the rotary driving piece is a gear shaft driving mechanism, the output end of the servo motor is connected with one end of the gear shaft driving mechanism, and the other end of the gear shaft driving mechanism is fixedly connected with the cutting assembly.
Optionally, a rotary power drive assembly is further included, the rotary power drive assembly comprising:
the rotary power piece is connected with the control assembly;
one end of the rotary driving piece is connected with the rotary power piece, and the other end of the rotary driving piece is connected with the material carrying assembly;
the control assembly controls the action of the rotary power piece so as to drive the rotary driving piece to drive the material carrying assembly to rotate.
Optionally, the cutting assembly is connected with the control assembly, so as to control the cutting assembly to travel along the preset material feeding path.
Optionally, the method further comprises:
and the angle detection assembly is respectively connected with the control assembly and the rotating shaft driving assembly and is used for detecting the rotating angle of the cutting assembly.
Optionally, the method further comprises:
the wire bow detection assembly is positioned on the cutting assembly and connected with the control assembly and used for detecting the wire bow value of the cutting assembly in real time and feeding back the wire bow value to the control assembly.
Optionally, the control assembly includes:
the device comprises a preset path to be cut obtaining unit, a processing unit and a processing unit, wherein the preset path to be cut obtaining unit is used for obtaining a preset path to be cut, and the preset path to be cut comprises a curve path;
a rotation angle calculating unit of a preset rotation shaft, configured to obtain, according to the preset path to be cut, a tangential angle of each cutting point and a distance between the cutting point and the preset rotation shaft, and calculate to obtain a rotation angle of the preset rotation shaft corresponding to the cutting point in the preset path to be cut;
The cutting point rotation angle control unit is used for controlling the cutting surface and/or the material to be cut to rotate around the preset rotation axis according to the rotation angle of the preset rotation axis so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located.
Optionally, the control assembly further comprises:
a preset wire bow value acquisition unit for acquiring a preset wire bow value;
the plane advancing information determining unit is used for determining plane advancing information of the cutting point in the preset path to be cut according to the preset path to be cut and the preset wire bow value;
and the plane travel control unit is used for controlling the travel of the cutting surface and/or the material to be cut according to the plane travel information.
Optionally, the control assembly further comprises:
the real-time line bow acquisition unit is used for acquiring a real-time line bow value of the current cutting point;
the actual plane traveling information determining unit is used for calibrating the plane traveling information at the current cutting point according to the real-time line bow value of the current cutting point to obtain the actual plane traveling information of the current cutting point and triggering the plane traveling control unit to act;
The plane traveling control unit is used for controlling the cutting point to travel according to the actual plane traveling information.
Optionally, the diamond wire cutting device is a horizontal diamond wire cutting machine.
The diamond wire cutting device provided by the embodiment of the application comprises: the cutting assembly is used for cutting materials to be cut; the material loading assembly is used for clamping and fixing the material to be cut; the control component is respectively connected with the cutting component and the material carrying component, and is used for controlling the cutting surface and/or the material to be cut to rotate around a preset rotating shaft according to a preset path to be cut so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located.
Compared with the prior art, the diamond wire cutting device provided by the embodiment of the application has the following technical effects:
the control component controls the cutting surface and/or the material to be cut to rotate around the preset rotating shaft according to the preset cutting path, so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset cutting path and is coplanar with the standard cutting surface. Therefore, the angle of the cut material and the diamond wire walking is automatically adjusted in an indexing mode according to the curve change of the shape surface, so that the direction of each cutting point of the diamond wire walking is consistent with the tangential direction of the shape surface at the position and coplanar with the standard cutting surface, a stable wire bow is maintained, the size and the direction of the wire bow are controllable, the problem that a theoretical cutting pattern and an actual cutting pattern are not matched due to the change of the diamond wire bow is avoided, and the high-precision shape surface cutting of the diamond wire is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a cutting schematic diagram of a wire cutting device of the prior art;
fig. 2 is a schematic cutting diagram of a diamond wire cutting device according to an embodiment of the present application;
fig. 3 is a schematic structural view of a diamond wire cutting device according to a first embodiment of the present application;
fig. 4 is a schematic structural diagram of a horizontal diamond wire cutting machine according to an embodiment of the present application;
fig. 5 is a schematic structural view of a diamond wire cutting device according to a second embodiment of the present application;
fig. 6 is a schematic structural view of a wire cutting device according to a third embodiment of the present application;
fig. 7 is a schematic structural diagram of a planar rectangular coordinate system according to an embodiment of the present application;
the figures are marked as follows:
the cutting machine comprises a clamping assembly 1, a rotary power driving assembly 2, a loading platform 3, a second direction driving assembly 4, a first direction driving assembly 5, a cutting wheel 6, a diamond wire 7, a driving device 8, a cutting assembly 9, a winding chamber 10 and a cutting fluid system 11.
Detailed Description
The embodiment of the application discloses a diamond wire cutting device which aims at solving the problem of curve cutting. The wire bow forms a certain angle with the center line of the wheel groove of the cutting guide wheel, and the direction and the size of the wire bow are continuously changed in the cutting process, so that the actual cutting position deviates from the preset walking track.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
First embodiment
Referring to fig. 2, fig. 2 is a schematic diagram illustrating a cutting process of a diamond wire cutting device according to an embodiment of the application; in one embodiment, the present application further provides a diamond wire cutting apparatus, including:
a cutting assembly 9 for cutting the material to be cut;
the material carrying assembly is used for clamping and fixing the belt cutting material;
the control component is respectively connected with the cutting component 9 and the material carrying component, and is used for controlling the cutting surface and/or the material to be cut to rotate around a preset rotating shaft according to a preset path to be cut and a preset wire bow value so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located.
As shown in fig. 5, the cutting assembly 9 comprises a cutting panel, a driving device (driving guide wheel) located on the cutting panel, two cutting wheels arranged opposite each other, and cutting lines respectively bypass the two cutting wheels and one driving guide wheel to form a cutting wire net. In other embodiments, the guide wheels may be provided as needed, and the cutting assembly 9 may be provided as needed, which is within the scope of the present application. The diamond wire can be operated in a long wire reciprocating mode or in a ring wire unidirectional mode. The diamond wire cutting machine has the main function of finishing cutting materials through the high-speed operation of the diamond wire.
Compared with the prior art, the diamond wire cutting method and device provided by the embodiment of the application have the following technical effects:
according to the method, the tangential angle of the cutting point and the distance between the cutting point and the preset rotating shaft are respectively obtained by obtaining the preset path to be cut, and the rotating angle of the corresponding preset rotating shaft of the cutting point in the preset path to be cut is calculated; and controlling the cutting surface and/or the material to be cut to rotate according to the rotation angle of the preset rotating shaft, so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset cutting path and is coplanar with the standard cutting surface. Therefore, the angle of the cut material and the diamond wire walking is automatically adjusted in an indexing mode according to the curve change of the shape surface, so that the direction of each cutting point of the diamond wire walking is consistent with the tangential direction of the shape surface at the position and coplanar with the standard cutting surface, a stable wire bow is maintained, the size and the direction of the wire bow are controllable, the problem that a theoretical cutting pattern and an actual cutting pattern are not matched due to the change of the diamond wire bow is avoided, and the high-precision shape surface cutting of the diamond wire is realized.
It will be appreciated that for effecting the planar movement as well as the rotational movement, a planar power drive assembly and a rotational power drive assembly 2 may be provided on the loading assembly and/or the cutting assembly 9, respectively. Fig. 6 is a schematic structural view of a wire cutting device according to a third embodiment of the present application; in the first embodiment, the rotary power drive assembly 2 is arranged on the cutting assembly 9, and the planar power drive assembly is arranged on the loading assembly; fig. 5 is a schematic structural view of a diamond wire cutting device according to a second embodiment of the present application; in the second embodiment, the rotary power drive assembly 2 is arranged on the carrier assembly, and the planar power drive assembly is arranged on the cutting assembly 9; the plane power driving assembly comprises a first direction driving assembly 5 and a second direction driving assembly 4 for carrying out X-axis and Y-axis movement, and the first direction driving assembly 5 and the second direction driving assembly 4 can be arranged on the cutting assembly 9 or the material carrying assembly; or in another embodiment, the first direction driving component 5 and the second direction driving component 4 are respectively arranged on the cutting component 9 and the loading component, and the specific arrangement modes are arranged according to the needs and are all within the protection scope of the application.
The first direction driving assembly 5 consists of a driving servo motor, a ball screw and a linear guide rail. The main function of the device is to drive the material carrying platform 3 to do accurate reciprocating linear motion along the X axis. And the material carrying platform 3 can perform accurate and controllable curve motion in linkage with the Y axis. The second direction driving assembly 4 consists of a driving servo motor, a ball screw and a linear guide rail. The main function of the device is to drive the material carrying platform 3 to do accurate reciprocating linear motion along the Y axis. And the material carrying platform 3 can perform accurate and controllable curve motion in linkage with the X axis. The rotary power driving assembly 2 consists of a driving servo motor, a coupler and a rotary bearing box. The main function of the device is to drive the clamping device to rotate at a corresponding angle according to the angle of the cutting curve.
Rotating shafts are added outside the X axis and the Y axis. When cutting, according to the curve change of the shape surface, the cutting tool or the cut material can automatically index and adjust the walking angle, so that the direction of each cutting point of the diamond wire walking is consistent with the tangential direction of the shape surface at the position, thereby maintaining a fixed cutting line bow and realizing controllable direction and size of the line bow.
First embodiment
In this embodiment, the case where the rotary power driving unit 2 is provided on the cutter unit 9, the first direction driving unit 5, and the second direction driving unit 4 are provided on the carrier unit will be described as an example:
In order to realize that the control assembly controls the rotation of the cutting surface and/or the material to be cut, the rotary power driving assembly 2 is further included, and the rotary power driving assembly 2 comprises a rotary power member and a rotary driving member. Wherein, the rotary power piece is connected with the control assembly, and the one end of rotary drive piece is connected with the rotary power piece, and the other end is connected with cutting assembly 9, and in one embodiment, rotary power drive assembly 2 comprises rotating electrical machines, base, gear assembly. The main function of the device is to drive the clamping device to rotate at a corresponding angle according to the angle of the cutting curve.
Wherein the rotary power member is provided as a servo motor having an encoder to measure the rotation angle.
In one embodiment, the rotary power member is a servo motor; the rotary driving piece is a gear shaft driving mechanism, the output end of the servo motor is connected with one end of the gear shaft driving mechanism, and the other end of the gear shaft driving mechanism is fixedly connected with the cutting assembly 9. Thereby improving control accuracy and reducing traveling errors.
The material carrying assembly is connected with the control assembly and used for controlling the material carrying assembly to advance along a preset path to be cut, the driving mode can be set into a gear transmission mechanism, a sliding rail and sliding block mechanism and the like, and the driving mode can be set according to the needs so as to realize the advance of the material carrying assembly on the shape surface, namely, the feeding of an X axis and a Y axis is carried out. The above-mentioned setting mode makes rotary power drive assembly 2 and plane power drive assembly separation set up, makes its installation error can not overlap on same structure, and the installation location of each power drive assembly of being convenient for simultaneously is convenient for dismouting, reduces the equipment degree of difficulty.
Specifically, the material carrying assembly comprises a material carrying platform 3 and a clamping assembly, wherein the clamping assembly is used for clamping a material to be cut; the clamping component is positioned on the material carrying platform 3; the control component is connected with the material carrying platform 3 and used for controlling the material carrying platform 3 to advance along a preset path to be cut.
In one embodiment, the loading assembly is comprised of a loading platform 3 and a clamping assembly. The clamping assembly comprises a clamping frame body and a clamping cylinder, is arranged above the material carrying table, clamps the cut material through the clamping cylinder, and drives the material to enter a cutting area under the driving of three shafts to complete the cutting of the material. The clamping assembly comprises a clamping frame body and a clamping cylinder, is arranged above the material carrying table, clamps the cut material through the clamping cylinder, and drives the material to enter a cutting area under the driving of three shafts to complete the cutting of the material.
Specifically, the first direction driving component 5 is located at the bottom of the loading platform 3, wherein the first direction is parallel to the plane of the cutting line of the cutting component 9; the first direction driving component 5 is connected with the control component to drive the material carrying platform 3 to move along a first direction, namely the X-axis direction. The second direction driving component 4 is positioned at the bottom of the material carrying platform 3, wherein the second direction is perpendicular to the plane of the cutting line of the cutting component 9; the second direction driving component 4 is connected with the control component to drive the material carrying platform 3 to move along the second direction, namely the Y-axis direction.
The first direction driving component 5 and the second direction driving component 4 can be one or more of a gear transmission mechanism, a sliding block sliding rail mechanism or a screw nut mechanism, such as a combination of the screw nut mechanism and the sliding block sliding rail mechanism or a combination of the gear transmission and the sliding block sliding rail mechanism. The first direction drive assembly 5 and the second direction drive assembly 4 are preferably arranged identically. In other embodiments, the specific structures of the first direction driving assembly 5 and the second direction driving assembly 4 may be set according to the needs, which are all within the scope of the present application. The second direction driving assembly 4 is fixed at the bottom of the loading platform 3, and the first direction driving assembly 5 is fixed at the bottom of the second direction driving assembly 4.
Second embodiment
In this embodiment, the case where the rotary power driving assembly 2 is provided on the carrier assembly, and the first direction driving assembly 5 and the second direction driving assembly 4 are provided on the cutting assembly 9 is explained as an example:
wherein the rotary power driving assembly 2 comprises:
the rotary power piece is connected with the control assembly;
one end of the rotary driving piece is connected with the rotary power piece, and the other end of the rotary driving piece is connected with the material carrying assembly;
the control component controls the action of the rotary power component to drive the rotary driving component to drive the material carrying component to rotate.
The structure of the rotary power driving assembly 2 may be set with reference to the first embodiment, and will not be described herein.
The cutting assembly 9 is connected with the control assembly for controlling the cutting assembly 9 to travel along a preset material feeding path. It will be appreciated that the preset material feed path travel herein and hereinafter is to control the travel of the cutting assembly 9 in accordance with the planar travel information by determining the planar travel information of the cutting point in the preset path to be cut in accordance with the preset path to be cut and the preset wire bow value.
Set up first direction drive assembly 5 and second direction drive assembly 4 between cutting assembly 9 and the control assembly, cutting assembly 9 includes cutting tool and cutting panel, and cutting tool sets up on the cutting panel, and first direction drive assembly 5 and second direction drive assembly 4 set up in the bottom of cutting panel, and the position and the structure of first direction drive assembly 5 and second direction drive assembly 4 can be consulted first embodiment and set up simultaneously, and no more detailed description is provided herein.
The application further comprises an angle detection assembly which is respectively connected with the control assembly and the rotating shaft driving assembly and is used for detecting the rotating angle of the cutting assembly 9. The rotation angle of the rotary power piece can be compared with that of the rotary power piece, and the comparison is fed back to the control assembly to judge and adjust.
Meanwhile, the application further comprises a wire bow detection assembly which is positioned on the cutting assembly 9, wherein the wire bow detection assembly is connected with the control assembly and is used for detecting the wire bow value of the cutting assembly 9 in real time and feeding back the wire bow value to the control assembly, and the control assembly controls the advancing speed in the cutting process according to the detected wire bow value, so that the wire bow value is adjusted to be equal to a preset wire bow value in real time. In another embodiment, the wire bow detection assembly may be provided on the carrier assembly, and the type of sensor, preferably a non-contact sensor, may be provided as desired to reduce interference with the cutting wire.
In this embodiment, the control assembly comprises:
the device comprises a preset to-be-cut path acquisition unit, a cutting unit and a cutting unit, wherein the preset to-be-cut path acquisition unit is used for acquiring a preset to-be-cut path, and the preset to-be-cut path comprises a curve path;
the rotation angle calculation unit of the preset rotation shaft is used for obtaining the tangential angle of each cutting point and the distance between the cutting point and the preset rotation shaft according to the preset to-be-cut path, and calculating to obtain the rotation angle of the corresponding preset rotation shaft of the cutting point in the preset to-be-cut path;
the cutting point rotation angle control unit is used for controlling the cutting surface and/or the material to be cut to rotate around the preset rotation axis according to the rotation angle of the preset rotation axis so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset cutting path and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located.
Specifically, the control assembly further comprises:
a preset wire bow value acquisition unit for acquiring a preset wire bow value;
the plane advancing information determining unit is used for determining plane advancing information of a cutting point in a preset path to be cut according to the preset path to be cut and a preset line bow value;
and the plane travel control unit is used for controlling the travel of the cutting surface and/or the material to be cut according to the plane travel information.
Further, the control assembly further comprises:
the real-time line bow acquisition unit is used for acquiring a real-time line bow value of the current cutting point;
the actual plane traveling information determining unit is used for calibrating plane traveling information at the current cutting point according to the real-time line bow value of the current cutting point to obtain the actual plane traveling information of the current cutting point and triggering the plane traveling control unit to act;
and the plane travel control unit is used for controlling the travel of the cutting point according to the actual plane travel information. In a specific embodiment, the material is fed in a two-axis linkage manner, and a cutting mode of feeding in a two-axis linkage manner by a cutting tool can also be adopted. The rotation axis is built on a stage holding the material to be cut. Before cutting, the size of the wire bow, namely the deviation value of the theoretical position and the actual position of the diamond wire, is set according to different material properties. As shown in fig. 7, when the preset rotation axis is used as the origin of the coordinate system to establish a plane rectangular coordinate system, and the plane rectangular coordinate system comprises an X axis and a Y axis, when the X axis and the Y axis are in linkage feeding, the object carrying platform drives the cut material to rotate by a certain angle according to the walking curve through the algorithm of the control program, so that the cutting direction of each point is consistent with the tangential direction of the shape surface at the position, the bending direction and the size of the wire bow are always kept unchanged, the effective control of the direction and the size of the wire bow is realized, and the purpose of precisely cutting the shape surface by using the diamond wire is achieved.
The device realizes triaxial movement, and compared with the prior art, the device increases the rotation axis movement, and the direction and the angle of diamond wire feeding can be adjusted through triaxial linkage, so that the stress direction and the stress of the cutting wire are always kept unchanged; the direction and the size of the diamond wire cutting line bow can be effectively controlled, but the direction and the size of the wire bow cannot be effectively controlled by linear single-shaft cutting and the traditional processing technology of the two-shaft cross loading platform 3; through the triaxial linkage, the walking position of the cutting wire can be effectively controlled, the feeding precision is improved, and the precise surface processing of the material is realized. The stress direction and the stress size of the diamond wire are effectively controlled, the occurrence frequency of the problems of wire breakage, wire disconnection, excessively rapid abrasion of the cutting guide wheel, accidental cutting and the like which are commonly existed in the traditional cutting technology can be reduced or even eradicated, the service life of each part is prolonged, and the use cost is reduced.
The application realizes the effective control of the bow direction and the size of the diamond wire cutting line, can more accurately cut the shape surface, and can realize the high-efficiency and accurate numerical control shape surface cutting by combining the high-efficiency technical characteristics of the diamond wire cutting. After the direction and the size of the diamond wire bow are effectively controlled, unordered running, vibration and other invalid cutting problems of the diamond wire in the cutting process can be effectively controlled, so that the quality of a broken surface is improved, self abrasion caused by invalid cutting of the diamond wire can be effectively reduced, the cutting efficiency and the service life are improved, and the use cost is further reduced.
Second embodiment
Referring to fig. 2-4, fig. 2 is a schematic diagram illustrating a cutting process of a diamond wire cutting device according to an embodiment of the present application;
fig. 3 is a schematic structural view of a diamond wire cutting device according to a first embodiment of the present application; fig. 4 is a schematic structural diagram of a horizontal diamond wire cutting machine according to an embodiment of the present application.
The application also provides a diamond wire cutting device which comprises a cutting assembly 9, a loading assembly and a control assembly in a specific embodiment. The cutting assembly 9, as shown in fig. 3, comprises a cutting panel, guide wheels on the cutting panel, a driving device 8 (driving guide wheels), two cutting wheels 6 arranged opposite to each other, and cutting lines respectively bypass the two cutting wheels 6, one guide wheel and one driving guide wheel to form a cutting wire net. In other embodiments, the guide wheel may be omitted, and the cutting assembly 9 may be set according to actual needs, which is within the scope of the present application. The diamond wire 7 can be operated in a long wire reciprocating mode or in a ring wire unidirectional mode, and the main function is to cut materials through high-speed operation of the diamond wire 7.
Compared with the prior art, the diamond wire cutting method and device provided by the embodiment of the application have the following technical effects:
According to the method, the tangential angle of the cutting point and the distance between the cutting point and the preset rotating shaft are respectively obtained by obtaining the preset path to be cut, and the rotating angle of the corresponding preset rotating shaft of the cutting point in the preset path to be cut is calculated; and controlling the rotation of the material to be cut according to the rotation angle of the preset rotation shaft, so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface. Therefore, the angle of the cut material and the diamond wire walking is automatically adjusted in an indexing mode according to the curve change of the shape surface, so that the direction of each cutting point of the diamond wire walking is consistent with the tangential direction of the shape surface at the position and coplanar with the standard cutting surface, a stable wire bow is maintained, the size and the direction of the wire bow are controllable, the problem that a theoretical cutting pattern and an actual cutting pattern are not matched due to the change of the diamond wire bow is avoided, and the high-precision shape surface cutting of the diamond wire is realized.
In this embodiment, the rotary power drive assembly 2 is further included, and the rotary power drive assembly 2 includes a rotary power member and a rotary drive member. The rotary driving piece is driven by the rotary driving piece to drive the material to be cut to rotate so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset cutting path and coplanar with the standard cutting surface.
The material carrying assembly comprises a material carrying platform 3 and a clamping assembly 1. The material loading platform 3 is used for loading the clamping assembly 1, the clamping assembly 1 is used for clamping a material to be cut, and the specific structure of the clamping assembly 1, such as clamping pieces of a clamping jaw or an objective table, can be set according to the material to be cut, and the specific structure is within the protection scope of the application. One end of the rotary power driving assembly 2 is connected with the material carrying platform 3, and is preferably arranged at the structural center of the material carrying platform 3, so that production and processing are facilitated, and numerical control data setting is facilitated. The other end of the rotary power driving component 2 is connected with the clamping component 1 to drive the clamping component 1 to rotate around a rotating shaft on the material loading platform 3, and likewise, the rotary power driving component 2 is preferably arranged at the structural center of the clamping component 1.
Specifically, the rotary power piece is fixed on the material carrying platform 3; one end of the rotary driving piece is connected with the rotary power piece, and the other end of the rotary driving piece is connected with the clamping assembly 1; the rotary driving piece drives the clamping assembly 1 to rotate under the driving of the rotary power piece. The rotary power piece is a servo motor; the rotary driving piece is a gear shaft driving mechanism which is positioned on the material carrying platform 3, one end of the rotary driving piece protrudes out of the wall thickness of the material carrying platform 3 and extends upwards, the output end of the servo motor is connected with one end of the gear shaft driving mechanism, and the other end of the gear shaft driving mechanism is fixedly connected with the clamping assembly 1. Under the drive of a servo motor, the gear shaft driving mechanism is driven to rotate, and meanwhile, the clamping assembly 1 positioned on the material carrying platform 3 is driven to rotate. In other embodiments, the specific structure of the rotary driving member may be set as required, which is within the scope of the present application.
In one embodiment, it is understood that the material feed may be achieved by feed of the loading platform 3 or feed of the cutting assembly 9. The material carrying platform 3 is connected with the control component and used for controlling the material carrying platform 3 to advance along a preset material feeding path. The diamond wire cutting device comprises a first direction driving assembly 5 and a second direction driving assembly 4. The first direction driving component 5 is positioned at the bottom of the material carrying platform 3, and the first direction driving component is parallel to the plane of the cutting line of the cutting component 9; the first direction driving component 5 is connected with the control component to drive the material carrying platform 3 to move along the first direction. The second direction driving component 4 is positioned at the bottom of the material carrying platform 3, and the second direction driving component is perpendicular to the plane of the cutting line of the cutting component 9; the second direction driving component 4 is connected with the control component to drive the material carrying platform 3 to move along the second direction. The second direction driving component 4 is fixed at the bottom of the loading platform 3, and the first direction driving component 5 is fixed at the bottom of the second direction driving component 4. In other embodiments, the positions of the first direction drive assembly 5 and the second direction drive assembly 4 may be exchanged, and may be set as desired.
Wherein, the X axis is the first direction, the Y axis is the second direction, and the X axis drives the material carrying platform 3 to reciprocate along the X axis; the material carrying platform 3 can do reciprocating motion along the Y axis by the Y axis driving; the rotary shaft drives the material carrying platform 3 to rotate around the rotary shaft in a forward and reverse direction at a certain angle. The curved motion feeding of the loading platform 3 is realized through the motion of three shafts. The material is fed in a two-axis linkage way, and a rotating shaft is established on the material carrying platform 3. Before cutting, the size of the wire bow is set according to different material attribute parameters. During cutting, the material carrying platform 3 drives the cut material to rotate by a certain angle according to the walking curve through the algorithm of the control program while the X-axis and the Y-axis are in linkage feeding, so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset cutting path, the bending direction and the size of the wire bow are ensured to be unchanged all the time, the effective control on the direction and the size of the wire bow is realized, and the purpose of accurately cutting the surface by using the diamond wire 7 is achieved.
The first direction driving component 5 and the second direction driving component 4 can be one or more of a gear transmission mechanism, a sliding block sliding rail mechanism or a screw nut mechanism, such as a combination of the screw nut mechanism and the sliding block sliding rail mechanism or a combination of the gear transmission and the sliding block sliding rail mechanism. The first direction drive assembly 5 and the second direction drive assembly 4 are preferably arranged identically. In other embodiments, the specific structures of the first direction driving assembly 5 and the second direction driving assembly 4 may be set according to the needs, which are all within the scope of the present application.
Or, in another embodiment, the cutting assembly 9 is connected to the control assembly, so as to control the cutting assembly 9 to travel along a preset material feeding path, and the cutting assembly 9 can be driven by a power member to achieve travel, and the specific setting of the power member can be set with reference to the state of the art, which is not described herein.
In order to detect the rotation angle of the material carrying platform 3 for feedback adjustment, the device further comprises an angle detection component which is respectively connected with the control component and the rotation power driving component 2, wherein the angle detection component can be set as an encoder for detecting the rotation angle of the rotation power driving component 2 and sending the rotation angle detected in real time to the control component, and the control component compares and judges the actual angle with the theoretical angle and adjusts the rotation angle according to the judging result so as to further improve the control precision and the coincidence degree of the theoretical cutting pattern and the actual cutting pattern.
Still further, the application also comprises a wire bow detection component which is positioned on the cutting component and connected with the control component for detecting the wire bow value of the cutting component in real time and feeding back the wire bow value to the control component, and the control component controls the advancing speed in the cutting process according to the detected wire bow value so as to adjust the wire bow value to be equal to the preset wire bow value in real time. In another embodiment, the wire bow detection assembly may be provided on the carrier assembly, and the type of sensor, preferably a non-contact sensor, may be provided as desired to reduce interference with the cutting wire.
In one embodiment, the diamond wire cutting device is a horizontal diamond wire cutting machine.
In a specific embodiment, the diamond wire cutting device includes:
winding chamber 10: the driving device 8 drives the diamond wire 7 to run at a high speed, and the tension control device ensures that the diamond wire 7 maintains stable tension. The diamond wire 7 is wound out of the winding chamber 10 by a guide wheel, and a cutting tool is formed by two cutting wheels 6.
Cutting wheel 6: the supporting diamond wire 7 completes the cutting action.
Carrying platform 3: the device consists of a first direction driving assembly 5, a second direction driving assembly 4, a rotary power driving assembly 2 and a clamping assembly 1. The curved motion feeding of the loading platform 3 is realized through the motion of three shafts.
Clamping assembly 1: the device is arranged above the rotary power driving assembly 2, clamps the cut material through the clamping tool, and drives the material to enter a cutting area under the driving of three shafts so as to complete the cutting of the material.
Cutting fluid system 11: consists of a conveying pipeline, a liquid return box and a liquid supply pump. The cutting area is supplied with a cooling liquid to protect the diamond wire 7 from being burnt out by overheating.
The specific working process is as follows:
a. the material is fixed on the clamping device of the material carrying platform 3.
b. Inputting a cutting program.
c. And starting the material carrying platform 3 to finish tool setting of the diamond wire 7 and the material.
d. The diamond wire 7 is retracted to zero.
e. The equipment is started, the diamond wire 7 runs, and the material loading platform 3 starts to feed.
f. The three axes are linked to perform curve feeding, and the diamond wire 7 performs surface cutting.
g. After the cutting is completed, the diamond wire 7 enters the empty knife area and stops running.
h. And taking down the cut materials.
i. And returning the diamond wire 7 to the zero point, and finishing cutting.
The indexable tangential point self-adaptive diamond wire cutting machine of the device can effectively control the direction and the size of a wire bow through three-axis linkage. The cutting precision is ensured, the advantage of high-efficiency cutting of the diamond wire 7 is fully exerted, and the high-precision and high-efficiency cutting is realized; and can perform conventional uniaxial cutting and profile cutting. The device has wide adaptability, realizes multiple functions, provides equipment use efficiency, and reduces the use cost of factory equipment. The application effectively controls the stress direction and the stress size of the diamond wire 7, can more accurately cut the surface, can reduce or even stop the occurrence frequency of the problems of wire breakage of the diamond wire 7, wire disconnection of the diamond wire 7, excessive abrasion of a cutting guide wheel, accidental cutting and the like commonly existing in the conventional cutting technology, improves the service life of each part, and reduces the use cost. After the direction and the size of the diamond wire 7 wire bow are effectively controlled, the unordered running of the diamond wire 7 in the cutting process, the invalid cutting problems such as vibration and the like can be effectively controlled, the self abrasion caused by the invalid cutting of the diamond wire 7 can be effectively reduced, the cutting efficiency and the service lives of consumable materials such as the diamond wire 7, the guide wheel and the like are improved, and the use cost is further reduced. The application solves the problem that the direction and the size of the wire bow cannot be controlled when the conventional diamond wire 7 cutting machine is used for cutting the surface, and realizes high-precision surface cutting. And by combining the technical characteristics of high efficiency of cutting by the diamond wire 7, the numerical control surface cutting with high efficiency and high accuracy is realized. The production efficiency is improved, and the production quality of factories is ensured.
The input cutting procedure of the step b in the specific working process may include the following steps:
the method comprises the steps of obtaining a preset to-be-cut path and a preset wire bow value, wherein the preset to-be-cut path can be obtained by inputting a cutting track image in an image interface of a control system, or directly inputting coordinates and the like in the control system, and meanwhile, the preset wire bow value can be set according to the preset to-be-cut path, for example, different preset to-be-cut paths can be provided with uniform preset wire bow values, or different preset to-be-cut paths are respectively provided with different preset wire bow values correspondingly. Can be set according to actual needs and are all within the protection scope of the application. The preset path to be cut comprises a curve path, can be composed of all curve paths or a curve path and a straight line path, and can be set according to the needs.
According to a preset path to be cut, respectively obtaining a tangential angle of a cutting point and a distance between the cutting point and a preset rotating shaft, and calculating to obtain a rotating angle of the corresponding preset rotating shaft of the cutting point in the preset path to be cut; the preset rotating shaft can be arranged on the cutting assembly or the carrying assembly, and is determined according to the setting position of the rotary driving device. According to the tangential angle of the cutting point and the distance between the cutting point and the rotating shaft, the rotating angle of the preset rotating shaft is calculated, so that the rotation of the preset rotating shaft is controlled according to different advancing positions in the advancing process, and the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut. How to calculate the rotation angle of the preset rotation axis corresponding to a point in the curve according to the tangential angle of the point and the distance between the point and the preset rotation axis is a mature prior art in the field.
According to the rotation angle of the preset rotation shaft, controlling the material to be cut to rotate around the preset rotation shaft so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located. The actual cutting direction of the cutting point is the opposite direction of the wire bow direction, and the actual cutting direction is the feeding direction. The central line of the cutting wheel groove is the circumferential line of the most concave part of the cutting wheel groove (namely the position of the cutting line wound on the cutting wheel in a normal state), and the plane of the central line is the plane of the circumferential line.
It can be understood that the preset rotating shaft can be arranged on the side of the material carrying platform, and the rotation of the material to be cut is controlled according to the rotation angle of the preset rotating shaft.
According to the method, the tangential angle of the cutting point and the distance between the cutting point and the preset rotating shaft are respectively obtained by obtaining the preset path to be cut, and the rotating angle of the corresponding preset rotating shaft of the cutting point in the preset path to be cut is calculated; and controlling the rotation of the material to be cut according to the rotation angle of the preset rotation shaft, so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface. Therefore, the angle of the cut material and the diamond wire walking is automatically adjusted in an indexing mode according to the curve change of the shape surface, so that the direction of each cutting point of the diamond wire walking is consistent with the tangential direction of the shape surface at the position and coplanar with the standard cutting surface, a stable wire bow is maintained, the size and the direction of the wire bow are controllable, the problem that a theoretical cutting pattern and an actual cutting pattern are not matched due to the change of the diamond wire bow is avoided, and the high-precision shape surface cutting of the diamond wire is realized.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (14)
1. A wire cutting device, comprising:
the cutting assembly is used for cutting materials to be cut;
the material loading assembly is used for clamping and fixing the material to be cut;
the control assembly is respectively connected with the cutting assembly and the material carrying assembly, and is used for controlling the cutting surface and the material to be cut to rotate around a preset rotating shaft according to a preset path to be cut so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located;
The control assembly includes:
the device comprises a preset path to be cut obtaining unit, a processing unit and a processing unit, wherein the preset path to be cut obtaining unit is used for obtaining a preset path to be cut, and the preset path to be cut comprises a curve path;
a rotation angle calculating unit of a preset rotation shaft, configured to obtain, according to the preset path to be cut, a tangential angle of each cutting point and a distance between the cutting point and the preset rotation shaft, and calculate to obtain a rotation angle of the preset rotation shaft corresponding to the cutting point in the preset path to be cut;
the cutting point rotation angle control unit is used for controlling the cutting surface and the material to be cut to rotate around the preset rotation axis according to the rotation angle of the preset rotation axis so that the actual cutting direction of the cutting point is consistent with the tangential direction of the cutting point in the preset path to be cut and is coplanar with the standard cutting surface; the standard cutting surface is a plane where the central line of the cutting wheel groove is located.
2. The wire cutting device of claim 1, further comprising a rotary power drive assembly comprising:
the rotary power piece is connected with the control assembly;
one end of the rotary driving piece is connected with the rotary power piece, and the other end of the rotary driving piece is connected with the cutting assembly;
The control component controls the action of the rotary power component so as to drive the rotary driving component to drive the cutting component to rotate.
3. The wire cutting device of claim 2, wherein the carrier assembly is connected to the control assembly for controlling the carrier assembly to travel along the predetermined path to be cut.
4. A wire cutting device according to claim 3, wherein the carrier assembly comprises:
a material carrying platform;
the clamping assembly is used for clamping the material to be cut; the clamping assembly is positioned on the material carrying platform;
the control assembly is connected with the material carrying platform and used for controlling the material carrying platform to move along the preset path to be cut.
5. The wire cutting device of claim 4, further comprising:
the first direction driving assembly is positioned at the bottom of the material carrying platform, wherein the first direction is parallel to the plane of the cutting line of the cutting assembly; the first direction driving component is connected with the control component so as to drive the material carrying platform to move along a first direction;
the second direction driving assembly is positioned at the bottom of the material carrying platform, wherein the second direction is perpendicular to the plane of the cutting line of the cutting assembly; the second direction driving assembly is connected with the control assembly to drive the material carrying platform to move along a second direction.
6. The wire cutting device of claim 5, wherein the second direction driving assembly is fixed to a bottom of the loading platform, and the first direction driving assembly is fixed to a bottom of the second direction driving assembly.
7. The wire cutting device of claim 2, wherein the rotary power member is a servo motor;
the rotary driving piece is a gear shaft driving mechanism, the output end of the servo motor is connected with one end of the gear shaft driving mechanism, and the other end of the gear shaft driving mechanism is fixedly connected with the cutting assembly.
8. The wire cutting device of claim 1, further comprising a rotary power drive assembly comprising:
the rotary power piece is connected with the control assembly;
one end of the rotary driving piece is connected with the rotary power piece, and the other end of the rotary driving piece is connected with the material carrying assembly;
the control assembly controls the action of the rotary power piece so as to drive the rotary driving piece to drive the material carrying assembly to rotate.
9. The wire cutting apparatus of claim 8, wherein the cutting assembly is coupled to the control assembly for controlling the cutting assembly to travel along a predetermined material feed path.
10. The wire cutting device of claim 1, further comprising:
and the angle detection assembly is respectively connected with the control assembly and the rotating shaft driving assembly and is used for detecting the rotating angle of the cutting assembly.
11. The wire cutting device of claim 1, further comprising:
the wire bow detection assembly is positioned on the cutting assembly and connected with the control assembly and used for detecting the wire bow value of the cutting assembly in real time and feeding back the wire bow value to the control assembly.
12. The wire cutting device of claim 1, wherein the control assembly further comprises:
a preset wire bow value acquisition unit for acquiring a preset wire bow value;
the plane advancing information determining unit is used for determining plane advancing information of the cutting point in the preset path to be cut according to the preset path to be cut and the preset wire bow value;
and the plane travel control unit is used for controlling the travel of the cutting surface and/or the material to be cut according to the plane travel information.
13. The wire cutting device of claim 12, wherein the control assembly further comprises:
The real-time line bow acquisition unit is used for acquiring a real-time line bow value of the current cutting point;
the actual plane traveling information determining unit is used for calibrating the plane traveling information at the current cutting point according to the real-time line bow value of the current cutting point to obtain the actual plane traveling information of the current cutting point and triggering the plane traveling control unit to act;
the plane traveling control unit is used for controlling the cutting point to travel according to the actual plane traveling information.
14. The wire cutting device of claim 1, wherein the wire cutting device is a horizontal wire cutting machine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764301.6A CN115008322B (en) | 2022-06-30 | 2022-06-30 | Diamond wire cutting device |
| PCT/CN2023/103801 WO2024002233A1 (en) | 2022-06-30 | 2023-06-29 | Diamond wire cutting apparatus, wire cutting control method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764301.6A CN115008322B (en) | 2022-06-30 | 2022-06-30 | Diamond wire cutting device |
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| CN115008322A CN115008322A (en) | 2022-09-06 |
| CN115008322B true CN115008322B (en) | 2023-08-15 |
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| CN202210764301.6A Active CN115008322B (en) | 2022-06-30 | 2022-06-30 | Diamond wire cutting device |
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| WO2024002233A1 (en) * | 2022-06-30 | 2024-01-04 | 青岛高测科技股份有限公司 | Diamond wire cutting apparatus, wire cutting control method and apparatus |
| CN115464790A (en) * | 2022-09-26 | 2022-12-13 | 华侨大学 | Control method for wire bow angle of wire mesh of multi-wire cutting machine |
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| JPH0871852A (en) * | 1994-09-01 | 1996-03-19 | Sodick Co Ltd | Helical involute cylindrical gear like member processing method |
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