CN210099148U - Constant-tension structure of molybdenum wire and wire cutting machine using same - Google Patents
Constant-tension structure of molybdenum wire and wire cutting machine using same Download PDFInfo
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- CN210099148U CN210099148U CN201920254864.4U CN201920254864U CN210099148U CN 210099148 U CN210099148 U CN 210099148U CN 201920254864 U CN201920254864 U CN 201920254864U CN 210099148 U CN210099148 U CN 210099148U
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Abstract
The utility model discloses a constant tensioning structure for molybdenum wires, which comprises a vertical arm, a plurality of wire conveying guide wheels, molybdenum wires and a wire tensioning device, wherein a containing cavity is arranged in the vertical arm, and the plurality of wire conveying guide wheels are arranged in the containing cavity; the wire tensioning device is arranged between two adjacent wire conveying guide wheels and comprises a rotating arm, a first tensioning wheel, a second tensioning wheel and a motor, the first tensioning wheel is rotatably arranged at one end of the rotating arm, the second tensioning wheel is rotatably arranged at the other end of the rotating arm, the output end of the motor is connected with the middle part of the rotating arm, and the motor drives the rotating arm to rotate; the molybdenum wires are wound among the wire conveying guide wheels, the first tensioning wheel and the second tensioning wheel, and the rotating arm can tension or loosen the molybdenum wires when rotating. The utility model has the advantages of the response speed is fast with tension invariant, can adjust the tensile force of molybdenum filament sensitively more.
Description
Technical Field
The utility model relates to a machining equips the field, especially relates to a structure of constant tensioning of molybdenum filament and uses its wire cut electrical discharge machining.
Background
After the molybdenum wire of the linear cutting machine tool is continuously cut and used for a long time, the molybdenum wire extends due to the influence of factors such as the change of the processing temperature, the abrasion of the molybdenum wire and the like, so that the tension force is gradually reduced, and finally, the molybdenum wire is easy to loosen and fall off during processing, so that the processing quality is seriously influenced finally, and therefore, a wire tightening device is generally installed on the linear cutting machine tool to tighten the molybdenum wire.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a structure of constant tensioning of molybdenum filament and use its wire cut electrical discharge machining to solve above-mentioned problem.
To achieve the purpose, the utility model adopts the following technical proposal:
a constant-tension structure of a molybdenum wire comprises a vertical arm, a plurality of wire conveying guide wheels, the molybdenum wire, a wire tensioning device, a pressure sensor and a controller, wherein a containing cavity is formed in the vertical arm, and the plurality of wire conveying guide wheels are arranged in the containing cavity; the wire tensioning device is arranged between two adjacent wire conveying guide wheels and comprises a rotating arm, a first tensioning wheel, a second tensioning wheel and a motor, the first tensioning wheel is rotatably arranged at one end of the rotating arm, the second tensioning wheel is rotatably arranged at the other end of the rotating arm, the output end of the motor is connected with the middle part of the rotating arm, and the motor drives the rotating arm to rotate; the molybdenum wires are wound among the wire conveying guide wheels, the first tensioning wheel and the second tensioning wheel, and the rotating arm can tension or loosen the molybdenum wires when rotating; the wire conveying guide wheels are longitudinally arranged in the containing cavity, the pressure sensor is connected with the wire conveying guide wheel positioned at the bottom, and the motor and the pressure sensor are electrically connected with the controller.
The wire tensioning device further comprises a speed reducing mechanism, the output end of the motor is connected with the input end of the speed reducing mechanism, and the output end of the speed reducing mechanism is connected with the rotating arm.
The wire tensioning device further comprises a mounting frame, two ends of the mounting frame are connected to two side walls of the containing cavity respectively, the speed reducing mechanism is arranged on the inner side of the mounting frame, the motor is mounted on the outer side of the mounting frame, and the output end of the motor penetrates through the mounting frame and is connected with the input end of the speed reducing mechanism.
A first mounting hole and a second mounting hole are symmetrically formed in two ends of the rotating arm, the first tensioning wheel comprises a first fixing part and a first rotating part, the first rotating part is rotatably arranged at one end of the first fixing part, and the other end of the first fixing part is arranged in the first mounting hole; the second tensioning wheel comprises a second fixing portion and a second rotating portion, the second rotating portion is rotatably arranged at one end of the second fixing portion, and the other end of the second fixing portion is arranged in the second mounting hole.
The motor is one of a servo motor, a stepping motor or a brushless direct current planetary gear speed reduction motor.
A wire cutting machine uses the structure with the constant tension of the molybdenum wire.
The wire conveying cylinder is arranged behind the vertical arm, the upper end of the cantilever is connected with the top of the vertical arm, the cantilever is arranged in front of the vertical arm, the first guide wheel is arranged above the cantilever, the height of the first guide wheel is the same as that of the uppermost wire conveying guide wheel, and the second guide wheel is arranged at the lower end of the cantilever; one end of the processing and mounting arm is connected with the lower end of the vertical arm, the third guide wheel is arranged at the other end of the processing and mounting arm, and the third guide wheel is positioned below the second guide wheel; the wire conveying guide wheel comprises a first wire conveying guide wheel, a second wire conveying guide wheel, a third wire conveying guide wheel and a fourth wire conveying guide wheel, the first wire conveying guide wheel, the second wire conveying guide wheel, the third wire conveying guide wheel and the fourth wire conveying guide wheel are sequentially installed in the containing cavity from top to bottom, and molybdenum wires sequentially pass through the second wire conveying guide wheel, the wire tensioning device, the first wire conveying guide wheel, the first guide wheel, the second guide wheel, the third guide wheel, the fourth wire conveying guide wheel and the third wire conveying guide wheel from the upper end of the wire conveying cylinder and return to the lower end of the wire conveying cylinder to form a closed molybdenum wire loop.
Drawings
The accompanying drawings are provided to further illustrate the present invention, but the content in the accompanying drawings does not constitute any limitation to the present invention.
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
fig. 2 is a schematic partial perspective view of one embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rotating arm, a first tension wheel and a second tension wheel according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a rotating arm according to one embodiment of the present invention;
wherein: the wire drawing device comprises a vertical arm 1, a cavity 110, a wire conveying guide wheel 2, a first wire conveying guide wheel 210, a second wire conveying guide wheel 220, a third wire conveying guide wheel 230, a fourth wire conveying guide wheel 240, a molybdenum wire 3, a wire tensioning device 4, a rotating arm 410, a first mounting hole 411, a second mounting hole 412, a first tensioning wheel 420, a first fixing part 421, a first rotating part 422, a second tensioning wheel 430, a second fixing part 431, a second rotating part 432, a motor 440, a speed reduction mechanism 450, a mounting frame 460, a pressure sensor 5, a wire conveying cylinder 6, a cantilever 7, a processing mounting arm 8, a first guide wheel 9, a second guide wheel 10 and a third guide wheel 11.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The structure for constant tensioning of a molybdenum wire in this embodiment, as shown in fig. 1-4, includes a vertical arm 1, a plurality of wire conveying guide wheels 2, a molybdenum wire 3, a wire tensioning device 4, a pressure sensor 5, and a controller, wherein a cavity 110 is provided in the vertical arm 1, and the plurality of wire conveying guide wheels 2 are provided in the cavity 110; the wire tensioning device 4 is arranged between two adjacent wire conveying guide wheels 2, the wire tensioning device 4 comprises a rotating arm 410, a first tensioning wheel 420, a second tensioning wheel 430 and a motor 440, the first tensioning wheel 420 is rotatably arranged at one end of the rotating arm 410, the second tensioning wheel 430 is rotatably arranged at the other end of the rotating arm 410, the output end of the motor 440 is connected with the middle part of the rotating arm 410, and the motor 440 drives the rotating arm 410 to rotate; the molybdenum wires 3 are wound among the plurality of wire conveying guide wheels 2, the first tensioning wheel 420 and the second tensioning wheel 430, and the rotating arm 410 can tension or loosen the molybdenum wires 3 when rotating; the wire conveying guide wheels 2 are longitudinally arranged in the accommodating cavity 110, the pressure sensor 5 is connected with the wire conveying guide wheel 2 positioned at the bottom, and the motor 440 and the pressure sensor 5 are electrically connected with the controller.
The traditional wire tensioning device 4 usually adopts a nut screw mechanism to drive a tensioning wheel to act so as to achieve the purpose of tensioning the molybdenum wire 3, but the tensioning wheel can be driven to move to a target position only by the fact that the screw needs to rotate for a plurality of turns, the response speed is low, the speed of the molybdenum wire 3 during working is high, when the tensioning wheel moves to the target position, a long section of molybdenum wire 3 with insufficient tensioning force or excessive tensioning force returns to the wire conveying cylinder 6, and the stability of the tensioning force of the molybdenum wire 3 is poor; the utility model discloses a motor 440 direct drive rocking arm 410 rotates and comes the tensioning or loosen molybdenum filament 3, and when the tensile force of molybdenum filament 3 was too big or the tensile force was not enough, motor 440 only needed to rotate less angle can adjust the tensile force of molybdenum filament 3, and response speed is very swift, makes the tensile force of molybdenum filament 3 at the during operation more stable, can satisfy higher work piece machining precision.
The controller can monitor the tension of the molybdenum wire 3 through the pressure sensor 5, and when the tension of the molybdenum wire 3 is too large or insufficient, the controller drives the motor 440 to rotate so as to loosen or tension the molybdenum wire 3, thereby achieving the purpose of keeping the tension of the molybdenum wire 3 constant.
The wire tightening device 4 further comprises a speed reducing mechanism 450, an output end of the motor 440 is connected with an input end of the speed reducing mechanism 450, and an output end of the speed reducing mechanism 450 is connected with the rotating arm 410.
Because the tension force of the molybdenum wire 3 is large during operation, the motor 440 needs to output a large torque to further tension the molybdenum wire 3, so that the work load of the motor 440 is large, and the reduction mechanism 450 can amplify the torque of the motor 440, so as to reduce the work load of the motor 440 during tensioning the molybdenum wire 3 and prolong the service life of the motor 440.
The wire tensioning device 4 further comprises a mounting frame 460, two ends of the mounting frame 460 are respectively connected to two side walls of the accommodating cavity 110, the speed reducing mechanism 450 is arranged on the inner side of the mounting frame 460, the motor 440 is mounted on the outer side of the mounting frame 460, and the output end of the motor 440 penetrates through the mounting frame 460 and is connected with the input end of the speed reducing mechanism 450.
The reduction mechanism 450 and the motor 440 are mounted on the mounting frame 460, so that the motor 440 and the reduction mechanism 450 can be conveniently disassembled and assembled, and the reduction or the motor 440 can be conveniently repaired or replaced at a later stage.
A first mounting hole 411 and a second mounting hole 412 are symmetrically formed at both ends of the rotating arm 410, the first tensioning wheel 420 includes a first fixing portion 421 and a first rotating portion 422, the first rotating portion 422 is rotatably disposed at one end of the first fixing portion 421, and the other end of the first fixing portion 421 is disposed in the first mounting hole 411; the second tensioning wheel 430 includes a second fixing portion 431 and a second rotating portion 432, the second rotating portion 432 is rotatably disposed at one end of the second fixing portion 431, and the other end of the second fixing portion 431 is disposed in the second mounting hole 412.
The position of the first tensioning wheel 420 in the housing 110 can be adjusted by adjusting the position of the first fixing portion 421 in the first mounting hole 411, and similarly, the position of the second tensioning wheel 430 in the housing 110 can be adjusted by adjusting the position of the second fixing portion 431 in the second mounting hole 412; by adjusting the positions of the first tensioning wheel 420 and the second tensioning wheel 430 in the cavity 110, the first tensioning wheel 420 and the second tensioning wheel 430 can be adjusted to be in the same plane with the wire transporting guide wheel 2, so that the molybdenum wires 3 are prevented from falling off the wire transporting guide wheel 2, the first tensioning wheel 420 or the second tensioning wheel 430 during operation.
The motor 440 is one of a servo motor, a stepping motor or a brushless dc planetary gear reduction motor.
The servo motor, the stepping motor and the brushless direct current planetary gear speed reduction motor have higher precision, and can finely adjust the tension of the molybdenum wire 3.
The wire cutting machine which uses the molybdenum wire constant-tensioning structure further comprises a wire conveying cylinder 6, a cantilever 7, a processing and mounting arm 8, a first guide wheel 9, a second guide wheel 10 and a third guide wheel 11, wherein the wire conveying cylinder 6 is arranged behind the vertical arm 1, the upper end of the cantilever 7 is connected with the top of the vertical arm 1, the cantilever 7 is arranged in front of the vertical arm 1, the first guide wheel 9 is arranged above the cantilever 7, the height of the first guide wheel 9 is the same as that of the uppermost wire conveying guide wheel 2, and the second guide wheel 10 is arranged at the lower end of the cantilever 7; one end of the processing and mounting arm 8 is connected with the lower end of the vertical arm 1, the third guide wheel 11 is arranged at the other end of the processing and mounting arm 8, and the third guide wheel 11 is positioned below the second guide wheel 10; the wire conveying guide wheel 2 comprises a first wire conveying guide wheel 210, a second wire conveying guide wheel 220, a third wire conveying guide wheel 230 and a fourth wire conveying guide wheel 240, the first wire conveying guide wheel 210, the second wire conveying guide wheel 220, the third wire conveying guide wheel 230 and the fourth wire conveying guide wheel 240 are sequentially installed in the accommodating cavity 110 from top to bottom, and the molybdenum wires 3 sequentially pass through the second wire conveying guide wheel 220, the wire tensioning device 4, the first wire conveying guide wheel 210, the first guide wheel 9, the second guide wheel 10, the third guide wheel 11, the fourth wire conveying guide wheel 240 and the third wire conveying guide wheel 230 from the upper end of the wire conveying cylinder 6 and return to the lower end of the wire conveying cylinder 6 to form a closed molybdenum wire 3 loop.
The wire tensioning device 4 is arranged between the first wire conveying guide wheel 210 and the second wire conveying guide wheel 220, when the wire tensioning device works, the rotating arm 410 rotates between the first wire conveying guide wheel 210 and the second wire conveying guide wheel 220 to adjust the tensioning force of the molybdenum wire 3, and a workpiece is placed between the second guide wheel 10 and the third guide wheel 11 for processing.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (7)
1. A constant tensioning structure for a molybdenum wire is characterized by comprising a vertical arm, a plurality of wire conveying guide wheels, the molybdenum wire, a wire tensioning device, a pressure sensor and a controller, wherein a containing cavity is formed in the vertical arm, and the plurality of wire conveying guide wheels are arranged in the containing cavity; the wire tensioning device is arranged between two adjacent wire conveying guide wheels and comprises a rotating arm, a first tensioning wheel, a second tensioning wheel and a motor, the first tensioning wheel is rotatably arranged at one end of the rotating arm, the second tensioning wheel is rotatably arranged at the other end of the rotating arm, the output end of the motor is connected with the middle part of the rotating arm, and the motor drives the rotating arm to rotate; the molybdenum wires are wound among the wire conveying guide wheels, the first tensioning wheel and the second tensioning wheel, and the rotating arm can tension or loosen the molybdenum wires when rotating; the wire conveying guide wheels are longitudinally arranged in the containing cavity, the pressure sensor is connected with the wire conveying guide wheel positioned at the bottom, and the motor and the pressure sensor are electrically connected with the controller.
2. The structure for constant tension of molybdenum wire as claimed in claim 1, wherein said wire tensioning device further comprises a speed reducing mechanism, an output end of said motor is connected with an input end of said speed reducing mechanism, and an output end of said speed reducing mechanism is connected with said rotating arm.
3. The structure of claim 2, wherein the wire tensioning device further comprises a mounting frame, two ends of the mounting frame are respectively connected to two side walls of the accommodating cavity, the speed reducing mechanism is arranged on the inner side of the mounting frame, the motor is mounted on the outer side of the mounting frame, and an output end of the motor penetrates through the mounting frame and is connected with an input end of the speed reducing mechanism.
4. The structure for constant tension of molybdenum wire as claimed in claim 1, wherein the rotation arm is symmetrically provided at both ends thereof with a first mounting hole and a second mounting hole, the first tension wheel comprises a first fixed portion and a first rotating portion, the first rotating portion is rotatably provided at one end of the first fixed portion, and the other end of the first fixed portion is provided in the first mounting hole; the second tensioning wheel comprises a second fixing portion and a second rotating portion, the second rotating portion is rotatably arranged at one end of the second fixing portion, and the other end of the second fixing portion is arranged in the second mounting hole.
5. A constant tension structure of molybdenum wires according to claim 1, wherein the motor is one of a servo motor, a stepper motor or a brushless dc planetary gear reduction motor.
6. A wire cutting machine, characterized in that a structure in which a molybdenum wire is constantly tensioned as claimed in any one of claims 1 to 5 is used.
7. The wire cutting machine according to claim 6, further comprising a wire conveying cylinder, a cantilever, a processing installation arm, a first guide wheel, a second guide wheel and a third guide wheel, wherein the wire conveying cylinder is arranged behind the vertical arm, the upper end of the cantilever is connected with the top of the vertical arm, the cantilever is arranged in front of the vertical arm, the first guide wheel is arranged above the cantilever, the height of the first guide wheel is the same as that of the wire conveying guide wheel positioned at the uppermost position, and the second guide wheel is arranged at the lower end of the cantilever; one end of the processing and mounting arm is connected with the lower end of the vertical arm, the third guide wheel is arranged at the other end of the processing and mounting arm, and the third guide wheel is positioned below the second guide wheel; the wire conveying guide wheel comprises a first wire conveying guide wheel, a second wire conveying guide wheel, a third wire conveying guide wheel and a fourth wire conveying guide wheel, the first wire conveying guide wheel, the second wire conveying guide wheel, the third wire conveying guide wheel and the fourth wire conveying guide wheel are sequentially installed in the containing cavity from top to bottom, and molybdenum wires sequentially pass through the second wire conveying guide wheel, the wire tensioning device, the first wire conveying guide wheel, the first guide wheel, the second guide wheel, the third guide wheel, the fourth wire conveying guide wheel and the third wire conveying guide wheel from the upper end of the wire conveying cylinder and return to the lower end of the wire conveying cylinder to form a closed molybdenum wire loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920254864.4U CN210099148U (en) | 2019-02-28 | 2019-02-28 | Constant-tension structure of molybdenum wire and wire cutting machine using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920254864.4U CN210099148U (en) | 2019-02-28 | 2019-02-28 | Constant-tension structure of molybdenum wire and wire cutting machine using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210099148U true CN210099148U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920254864.4U Active CN210099148U (en) | 2019-02-28 | 2019-02-28 | Constant-tension structure of molybdenum wire and wire cutting machine using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210099148U (en) |
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- 2019-02-28 CN CN201920254864.4U patent/CN210099148U/en active Active
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