CN212552133U - Electrode wire tension double-frequency change control device of high-speed wire-moving electric spark wire-electrode cutting machine tool - Google Patents
Electrode wire tension double-frequency change control device of high-speed wire-moving electric spark wire-electrode cutting machine tool Download PDFInfo
- Publication number
- CN212552133U CN212552133U CN202021137026.8U CN202021137026U CN212552133U CN 212552133 U CN212552133 U CN 212552133U CN 202021137026 U CN202021137026 U CN 202021137026U CN 212552133 U CN212552133 U CN 212552133U
- Authority
- CN
- China
- Prior art keywords
- wire
- tension
- electrode
- guide wheel
- constant force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The utility model provides a high-speed spark-erosion wire cutting machine bed wire electrode tension dual-frenquency change controlling means, characterized by wire electrode (2) on a silk section of thick bamboo (10) through last auxiliary guide wheel (3), go up last tensioning guide wheel (6) on spring tension device (9), go up leading wheel (1), leading wheel (18) down, lower tensioning guide wheel (15) on spring tension device (16) down, down return to on a silk section of thick bamboo (10) behind auxiliary guide wheel (17), connecting plate (12) are installed on guide rail slider (13) and connecting plate (12) bilateral symmetry install upper and lower spring tension device, the three is as the constant force control of a whole constant force device (11). The utility model discloses with the tensile height of high-speed reciprocal spark-erosion wire cutting machine bed wire electrode, low frequency change control through corresponding height, low frequency response device respectively, realized the tensile quick, stable regulation of wire electrode in the course of working, improvement cutting stability and machining precision that can show.
Description
Technical Field
The invention belongs to the technical field of electrospark wire-electrode cutting processing, and relates to a wire electrode tension control device which can stably adjust low-frequency change of wire electrode tension and can quickly respond to high-frequency change of the wire electrode tension, in particular to a wire electrode tension double-frequency change control device of a high-speed wire-moving electrospark wire-electrode cutting machine.
Background
The high-speed reciprocating wire-moving electric spark wire-electrode cutting machine tool with completely independent intellectual property rights in China is widely applied to the field of mechanical manufacturing with high cost performance and low operation cost, has huge market potential particularly in the field of large-scale mechanical part machining and die machining, and has wide development prospect. However, the change of the tension of the wire electrode can cause the instability of the spatial position of the wire electrode, which has great influence on the cutting precision, and the change of the tension can affect the cutting stability of the machine tool. Particularly, due to the 'reciprocating wire-moving' characteristic of the machine tool, the electrode wire is easy to form a 'single-side wire loosening' phenomenon, namely the electrode wire has inconsistent tension at two ends of a wire barrel after a period of processing time, and the problem always troubles the performance of the high-speed reciprocating wire-moving linear cutting machine tool. At present, various electrode wire constant tension control devices for high-speed reciprocating wire-moving electric spark wire-cutting machine tools are provided in China.
As shown in fig. 1, the weight type tension device is the simplest adjustable tension device. Firstly, the heavy hammer has larger inertia due to larger mass, so that the frequency response speed of the heavy hammer type tension device is lower, and the device cannot respond to the instantaneous tension change of the wire electrode in the wire traveling process under the condition that the wire electrode runs at a high speed with the linear speed of 8-12 m/s; secondly, the weight type tension device is effective in controlling the tension of the electrode wire from the static point of view of force, but has defects in controlling the tension of the electrode wire from the dynamic point of view: when the tension of the wire electrode is smaller than or larger than the weight of the weight, the weight can move downwards or upwards, and when the weight moves downwards, the acting force on the wire electrode is the product (G-ma) of the weight mass m subtracted by the gravity G of the weight and the motion acceleration a of the weight; when the weight moves upwards, the force applied to the wire electrode is the weight force G of the weight plus the product (G + ma) of the weight mass G and the motion acceleration a of the weight, and the wire electrode tension is controlled to have an error of +/-ma in both cases. Therefore, the weight type tension device is fluctuated in the wire electrode tension in the processing process, lags in the reaction of the weight type tension device to the high-frequency change characteristic of the wire electrode tension, and is generally only used for the occasion of macroscopically adjusting the wire electrode tension.
As shown in fig. 2, the bidirectional spring type tension device is a tension control device which is used in a traditional 'medium-speed wire feeding' machine tool in many cases. The tension of the electrode wire during reciprocating wire moving is controlled by applying the elastic force generated by elastic deformation of the spring to the upper and lower electrode wires in a processing area respectively, so that the method is simple, effective and economical. Because the spring can store great elastic potential energy when compressing, when electrode wire tension takes place slight change, spring tension device can respond fast, therefore two-way spring tension device is for weight formula tension device's obvious advantage is: the wire tensioning device has the advantages that the function of simultaneously tensioning the two sides can be realized, the moving adjusting part of the spring type tension device is small in mass, the system inertia is small, and quick response can be made to the high-frequency tension change characteristic of the electrode wire in a machining area. Spring tensioners also have their problems. Firstly, the spring generates elongation deformation to compensate the elongation of the wire electrode in the discharge machining in the actual machining process, and the elastic force of the spring is reduced after the spring is elongated, so that the tension of the wire electrode is inevitably reduced, and the tension of the wire electrode is gradually changed from large to small in the machining process of the bidirectional spring type tension device; and secondly, the energy storage stroke of the spring type tension device is small, and because the tension energy comes from the elasticity of the spring, when the elongation deformation of the electrode wire is large, the spring can also generate large deformation, and at the moment, the tension of the electrode wire can be greatly changed. Therefore, the bidirectional spring type tension device can well control the high-frequency change of the tension of the wire electrode, and has great limitation on the control of the low-frequency change of the tension of the wire electrode.
Disclosure of Invention
The invention aims to solve the problem that the control difficulty of the high-frequency and low-frequency tension changes of the electrode wire of the existing linear cutting machine is high, and provides a method and a device for controlling the high-frequency and low-frequency changes of the tension of the electrode wire through corresponding high-frequency and low-frequency response devices respectively.
The technical scheme of the invention is as follows:
a high-speed wire-moving spark linear cutting machine electrode wire tension double-frequency change control device is characterized by comprising an upper spring tension device 9, a lower spring tension device 16, an upper auxiliary guide wheel 3, a lower auxiliary guide wheel 17, a connecting plate 12, a constant force device 11, a guide rail sliding block 13 and a guide rail 14, wherein the guide rail 14 is arranged on a machine tool upright post, and the guide rail sliding block 13 is arranged on the guide rail; the connecting plates 12 are symmetrically arranged on the guide rail sliding blocks 13, and the upper spring tension devices 9 and the lower spring tension devices 16 are respectively positioned on two sides of the connecting plates 12 and are symmetrically distributed; the constant force device 11 is fixedly connected with the connecting plate 12, and provides a horizontal constant force for the connecting plate 12; the upper spring tension device 9 and the lower spring tension device 16 have the same structure; the upper auxiliary guide wheel 3 and the lower auxiliary guide wheel 17 are arranged on a machine tool upright post; the electrode wire 2 on the wire cylinder 10 returns to the wire cylinder 10 after passing through an upper auxiliary guide wheel 3, an upper tensioning guide wheel 6 on an upper spring tension device 9, an upper main guide wheel 1, a lower main guide wheel 18, a lower tensioning guide wheel 15 on a lower spring tension device 16 and a lower auxiliary guide wheel 17; the upper spring tension device 9, the lower spring tension device 16, the connecting plate 12 and the guide rail sliding block 13 form a whole, and the whole is moved left and right on the guide rail 14 under the action of a horizontal constant force provided by the constant force device 11, so that the low-frequency change of the tension of the electrode wire 2 is stably adjusted.
The constant force device 11 can compensate for overlarge force and too small force so as to maintain a constant value, and adopts the structure of a heavy hammer, a magnetic clutch, a torque motor and a linear motor mechanism; the constant force range provided by the constant force device 11 is less than or equal to 60N.
The upper spring tension device 9 and the lower spring tension device 16 are identical in structure and comprise a base 4, a spring 5, an upper tensioning guide wheel 6, a tensioning guide wheel seat 7 and a guide rod 8, and the tension of the electrode wire 2 is controlled through the compression of the spring 5 and quick response is made to high-frequency changes of the tension of the electrode wire 2.
A tension sensor is added in the wire moving system, the tension of the wire electrode is detected through the sensor, and the constant force device 11 is adjusted through the feedback of a detection signal.
The number of the upper auxiliary guide wheel 3 and the lower auxiliary guide wheel 17 is one or more, so as to change the direction of the constant force provided by the constant force device 11.
The number of the guide rails 14 is at least one.
The invention has the beneficial effects that:
the invention aims at the change characteristic of the tension of the electrode wire of the high-speed reciprocating wire-moving electric spark wire-cutting machine tool, realizes the effective control of the high-frequency tension change and the low-frequency tension change of the electrode wire, and overcomes the defects of unstable tension and low response speed of the electrode wire in the processing of the traditional tension device. The invention has obvious improvement effect on the improvement of high-thickness cutting stability and the improvement of multiple cutting machining precision.
Drawings
FIG. 1 is a schematic view of a counterweight type tensioning device;
FIG. 2 is a schematic view of a two-way spring type tension device;
FIG. 3 is a schematic view of a wire electrode tension dual-frequency variation control device of the high-speed wire-moving electric spark linear cutting machine according to the present invention;
FIG. 4 is a schematic diagram of a first embodiment of a wire-electrode tension dual-frequency variation control device of the high-speed wire-moving electric spark linear cutting machine according to the present invention;
FIG. 5 is a schematic diagram of a second embodiment of the wire-electrode tension dual-frequency variation control device of the high-speed wire-moving electric spark linear cutting machine according to the present invention;
FIG. 6 is a partial schematic view of a constant force device in a second embodiment of the wire electrode tension dual-frequency variation control device of the high-speed wire-moving electric spark linear cutting machine according to the present invention;
FIG. 7 is a schematic diagram of a third embodiment of the wire-electrode tension dual-frequency variation control device of the high-speed wire-moving electric spark linear cutting machine according to the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
The first embodiment.
As shown in fig. 4, the electrode wire 2 on the wire drum 10 returns to the wire drum 10 through the upper auxiliary guide wheel 3, the upper tensioning guide wheel 6 on the upper spring tension device 9, the upper main guide wheel 1, the lower main guide wheel 18, the lower tensioning guide wheel 15 on the lower spring tension device 16, and the lower auxiliary guide wheel 17. The constant force device 11 comprises a gravity guide wheel 19, a non-elastic flexible rope 20 and a tension balancing weight 21, wherein the tension balancing weight 21 is connected with the connecting plate 12 through the non-elastic flexible rope 20, and vertical gravity is converted into horizontal force to be applied to the connecting plate 12 through the gravity guide wheel 19, so that the tension of the electrode wire is macroscopically controlled. The upper spring tension device 9 and the lower spring tension device 16 have the same structure, can adopt the same structure as the prior art, and can also be designed and manufactured by themselves.
Example two.
As shown in fig. 5 and 6, the second embodiment is different from the first embodiment in that: firstly, a torque motor 23 is adopted by the constant force device to carry out constant force output, the torque motor 23 is arranged on a machine tool upright post 26 through a supporting frame 22, and the output end of the torque motor 23 is provided with a winch 24 which is connected with the connecting plate 12 through a non-elastic flexible rope 20; secondly, the connecting plate 12 is reduced in size and the mounting position with the guide rail is changed, but the symmetrical mounting is still maintained; thirdly, according to actual installation requirements, 4 auxiliary guide wheels 25 are added on the basis of the original auxiliary guide wheels.
The scheme is not limited to the adoption of a torque motor, but also can adopt an electromagnetic clutch or a linear motor and the like to carry out constant force control on the connecting plate.
Example three.
As shown in fig. 7, the third embodiment is different from the first and second embodiments in that the macro control of the tension of the wire electrode 2 in the present embodiment is a closed-loop tension control based on the sensor signal, rather than an open-loop setting control. The mode of macroscopically regulating and controlling the tension of the electrode wire by the constant force device 11 is as follows: the stepping motor 30 drives the connecting plate 12 to move horizontally through the ball screw pair 31. The computer analyzes the tension of the electrode wire collected by the tension sensor 28 to judge the moving direction of the connecting plate 12, and has the advantages of flexible setting of the tension value, real-time tracking and detection and the like.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For the technical field of the present invention, several simple deductions or substitutions can be made without departing from the control method proposed by the present invention according to the research, and all should be considered as belonging to the protection scope of the present invention.
The present invention is not concerned with parts which are the same as or can be implemented using prior art techniques.
Claims (6)
1. A high-speed wire-moving electric spark wire-cutting machine tool electrode wire tension double-frequency change control device is characterized by comprising an upper spring tension device (9), a lower spring tension device (16), an upper auxiliary guide wheel (3), a lower auxiliary guide wheel (17), a connecting plate (12), a constant force device (11), a guide rail sliding block (13) and a guide rail (14), wherein the guide rail (14) is arranged on a machine tool upright post, and the guide rail sliding block (13) is arranged on the guide rail; the connecting plates (12) are symmetrically arranged on the guide rail sliding blocks (13), and the upper spring tension devices (9) and the lower spring tension devices (16) are respectively positioned on two sides of the connecting plates (12) and are symmetrically distributed; the constant force device (11) is fixedly connected with the connecting plate (12) and provides a horizontal constant force for the connecting plate (12); the upper spring tension device (9) and the lower spring tension device (16) have the same structure; the upper auxiliary guide wheel (3) and the lower auxiliary guide wheel (17) are arranged on a machine tool upright post; the electrode wire (2) on the wire cylinder (10) returns to the wire cylinder (10) after passing through an upper auxiliary guide wheel (3), an upper tensioning guide wheel (6) on an upper spring tension device (9), an upper main guide wheel (1), a lower main guide wheel (18), a lower tensioning guide wheel (15) on a lower spring tension device (16) and a lower auxiliary guide wheel (17); the upper spring tension device (9), the lower spring tension device (16), the connecting plate (12) and the guide rail sliding block (13) form a whole, and the whole is moved left and right on the guide rail (14) under the action of a horizontal constant force provided by the constant force device (11), so that the low-frequency change of the tension of the wire electrode (2) is stably adjusted.
2. The tension dual-frequency variation control device for the electrode wire of the high-speed wire-cut electric discharge machine according to claim 1, characterized in that the constant force device (11) can compensate for excessive and insufficient force so as to maintain a constant value, and adopts the structure of a heavy hammer, a magnetic clutch, a torque motor and a linear motor mechanism; the constant force range provided by the constant force device (11) is less than or equal to 60N.
3. The wire electrode tension double-frequency change control device of the high-speed wire-moving electric spark linear cutting machine according to the claim 1, characterized in that the upper spring tension device (9) and the lower spring tension device (16) are the same in structure and comprise a base (4), a spring (5), an upper tensioning guide wheel (6), a tensioning guide wheel seat (7) and a guide rod (8), and the tension of the wire electrode (2) is controlled through the compression of the spring (5) and the quick response is made to the high-frequency change of the tension of the wire electrode (2).
4. The tension dual-frequency variation control device for the electrode wire of the high-speed wire-cut electric discharge machine according to claim 1, wherein a tension sensor is added in the wire-cutting system, the tension of the electrode wire is detected by the sensor, and the constant force device (11) is adjusted by the feedback of the detection signal.
5. The wire electrode tension double-frequency change control device of the high-speed wire-moving electric spark linear cutting machine according to claim 1, wherein the number of the upper auxiliary guide wheel (3) and the lower auxiliary guide wheel (17) is one or more, so as to change the direction of the constant force provided by the constant force device (11).
6. The device for controlling the tension of the electrode wire of the high-speed wire-cut electric discharge machine according to claim 1, wherein the number of the guide rails (14) is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021137026.8U CN212552133U (en) | 2020-06-18 | 2020-06-18 | Electrode wire tension double-frequency change control device of high-speed wire-moving electric spark wire-electrode cutting machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021137026.8U CN212552133U (en) | 2020-06-18 | 2020-06-18 | Electrode wire tension double-frequency change control device of high-speed wire-moving electric spark wire-electrode cutting machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212552133U true CN212552133U (en) | 2021-02-19 |
Family
ID=74635516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021137026.8U Active CN212552133U (en) | 2020-06-18 | 2020-06-18 | Electrode wire tension double-frequency change control device of high-speed wire-moving electric spark wire-electrode cutting machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212552133U (en) |
-
2020
- 2020-06-18 CN CN202021137026.8U patent/CN212552133U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109365934A (en) | A kind of motor spring wire feeder of Wire EDM | |
| CN201493578U (en) | Closed-loop tension dynamically controlled wire-moving mechanism of electric spark wire cutting machine | |
| CN208648322U (en) | A kind of tension floating roller regulating mechanism | |
| CN105522241A (en) | Taper linear cutting electrode wire length automatic compensation mechanism and control method | |
| CN111570947A (en) | Method and device for controlling tension dual-frequency change of electrode wire of high-speed wire-moving electric spark wire-cutting machine tool | |
| CN212552133U (en) | Electrode wire tension double-frequency change control device of high-speed wire-moving electric spark wire-electrode cutting machine tool | |
| CN113113561B (en) | Constant-pressure control method and constant-pressure adjusting device | |
| CN203738179U (en) | Numerical control tool following type wire cutting electrode wire guiding device | |
| CN203475011U (en) | Transversely-moving yarn guiding device of spinning machine | |
| CN215356587U (en) | Automatic wire tightening mechanism with constant tension and wire moving cutting machine | |
| CN202540012U (en) | Auxiliary support structure of servo feed screw | |
| CN214225363U (en) | Motor performance testing device | |
| CN205324921U (en) | Tapering line cutting electrode filament length degree automatic compensation mechanism | |
| CN202137481U (en) | On-line controlling electrode filament tensioning device | |
| CN211715657U (en) | Punch press vibration damping mount | |
| CN105269101A (en) | Tension-changeable reciprocating wire-cutting type electrical spark linear cutting machine tool | |
| CN204053165U (en) | Variable tension reciprocal in walk wire type electric spark linear cutting machine | |
| CN106903600B (en) | Lateral counterweight sliding device for iron pan polishing robot | |
| CN216151377U (en) | Multi-head synchronous linear cutting machine tool | |
| CN215699567U (en) | Novel multi-functional automatic lock screw equipment | |
| CN205096666U (en) | Quick -witted bed electrode silk tension governing system of silk hurries up | |
| CN219113106U (en) | Molybdenum wire tensioning device, wire conveying system of wire cutting machine and wire cutting machine tool | |
| CN209922565U (en) | Winding tension detection device and winding machine | |
| CN211276206U (en) | Forming die for processing LED lamp support | |
| CN214827919U (en) | Adjustable copper line winding displacement device with response function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |