CN201997819U - Constant tension control device for wire conveying system of low speed wire electrical discharge machine - Google Patents
Constant tension control device for wire conveying system of low speed wire electrical discharge machine Download PDFInfo
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- CN201997819U CN201997819U CN2011200219561U CN201120021956U CN201997819U CN 201997819 U CN201997819 U CN 201997819U CN 2011200219561 U CN2011200219561 U CN 2011200219561U CN 201120021956 U CN201120021956 U CN 201120021956U CN 201997819 U CN201997819 U CN 201997819U
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- wire
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- silk
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Abstract
The utility model discloses a constant tension control device for a wire conveying system of a low speed wire electrical discharge machine, which comprises a swing wheel, a swing arm, a sensor for feeding back a wire feed speed, a tension wheel and a precision magnetic powder clutch, wherein the swing wheel is connected in series to an electrode wire between the tension wheel and a wire roll; the swing arm is connected with the swing wheel through a central shaft; a non swing wheel end of the swing arm is hinged to a frame of the wire electrical discharge machine; the sensor for feeding back the wire feed speed is arranged at the hinged position of the non swing wheel end of the swing arm and the frame, and feeds a wire feed speed signal back to a control system for timely regulating a rotating speed of a wire feed speed regulating motor; and the tension wheel is connected in series to a wire path before the electrode wire is introduced to an upper electric conduction device, and the precision magnetic powder clutch and the tension wheel are arranged in the same axis. The constant tension control device is used for solving the problem that the wire conveying system of the conventional low speed wire electrical discharge machine has unstable output tension or cannot regulate the output tension at any time through an instruction, and has the advantages of stable output tension, capacity of regulating the output tension at any time through an instruction, and simple structure.
Description
Technical field
The utility model relates to a kind of wire cutting machine tool, and particularly a kind of low-speed wire cutting wire cutting machine is transported the weighing apparatus tenslator of silk system.
Background technology
Wire cutting machine is a kind ofly to add high frequency electric source at wire electrode (brass wire) two ends, realizes metal material is removed the machining tool that loses by the control to discharge.Low-speed wire cutting is meant that the work in-process wire electrode speed of service is usually less than 300 mm/second.Automatic wire feed mechanism be meant be used for processing former generation substitute worker wears behind silk or the unexpected fracture of wire of process can automatic connection, make lathe under unmanned situation, can cut a kind of mechanism of operation continuously.The weighing apparatus tenslator is meant in order to guarantee that fortune silk system exports the steady and adjustable of tension force and a kind of governor motion that adopt in the machine tooling process.
In the processing of low-speed wire cutting wire cutting machine was used, the steady degree of wire electrode operation was very big to the processing characteristics influence of lathe.In the lathe use, striped appears in the piece surface that processes, and abnormality such as fracture of wire often all has direct relation with the steady degree of wire electrode operation in the process.
Present stage, the fortune silk system of low-speed wire cutting wire cutting machine mainly contained two kinds of structures:
First kind of structure mainly controlled final stage tension force, and the initial tension of prime has only been carried out general restriction.This structure adopts mostly in silk spool rear end magnetic powder cluth or motor is installed, for the silk volume provides an opposing torque.Owing to the silk volume is twined radius and the influence of twining degree of tightness, initial tension can produce fluctuation, thereby causes the whole output tension force of transporting the silk system also can produce fluctuation, can not effectively control the output tension force of a fortune system.
Second kind of structure is: an escapement is set between wire drawing wheel and wire feed rolls, wire drawing wheel is a driving wheel in fortune silk process, when driving wheel rotates by certain linear velocity, wire feed rolls is balance with it, when not reaching the linear velocity balance, escapement is swung up or down, and there is a sensor escapement back, and the speed of the adjustment wire feed rolls that sensor can be in good time reaches the balance of receiving silk and wire feed rate.But the control of its tension force is that a tension ring is installed on escapement, provides with the gravity of tonogram to add required tension force in man-hour.As change output tension force with regard to needs replacing tension ring.In same program processing, can not change output tension force by instruction according to process requirements.
Above-described first kind of structure is to not effectively control of the output of tension force, and the wire electrode of tension fluctuation can influence the discharge condition in the process in the process, thereby causes work piece surface the generation of situations such as fracture of wire in striped, the process to occur.
Though second kind of structure can be controlled fortune silk system output tension force, can not change the size of output tension force at any time, more can't realize controlling with program the purpose of tension force size.Want to change tension force, can only realize troublesome poeration, inefficiency by changing tonogram.
The utility model content
The purpose of this utility model provides the weighing apparatus tenslator that a kind of low-speed wire cutting wire cutting machine is transported the silk system, to solve existing low-speed wire cutting wire cutting machine fortune silk system or to export the problem that the tension force instability maybe can not be adjusted fortune system's output tension force at any time by instruction.
The purpose of this utility model is achieved through the following technical solutions:
A kind of low-speed wire cutting wire cutting machine is transported the weighing apparatus tenslator of silk system, comprise escapement, swing arm, the sensor of feed back wire feeding speed, straining pulley and accurate magnetic powder cluth, described escapement is serially connected on the wire electrode between straining pulley and silk volume, described swing arm is connected by central shaft with escapement, the non-escapement end of swing arm is hinged on the frame of wire cutting machine, the sensor of described feed back wire feeding speed is arranged on the non-escapement end of swing arm and the hinged place of frame, sensor is given the control system of in time adjusting the rotating speed of wire feed buncher with the wire feed rate signal feedback, and described straining pulley is serially connected in wire electrode and introduces described going up on the preceding the Silk Road of electric installation, accurate magnetic powder cluth and straining pulley are arranged on the same axis.
Preferably, near the frame described escapement, fixedly send the transmitting device of the signal of control wire feed buncher counter-rotating.
The beneficial effects of the utility model are: adopt the tenslator that weighs to control whole tension force output of transporting the silk system, can guarantee the tension stability of exporting down in same instruction (tension force instruction); Can in same program (procedure), call different tension force output according to the processing needs; Simple in structure.
Description of drawings
With embodiment the utility model is described in further detail with reference to the accompanying drawings below.
Fig. 1 comprises the fundamental diagram that low-speed wire cutting wire cutting machine of the present utility model is transported the silk system;
Fig. 2 is the structural representation that comprises low-speed wire cutting wire cutting machine wire-feeding part of the present utility model;
Fig. 3 is the partial schematic diagram of escapement part of the present utility model;
Among the figure: 1, receive the silk buncher; 2, wire drawing wheel; 3, wire feed buncher; 4, silk volume; 5, escapement; 6, sensor; 7, accurate magnetic powder cluth; 8, transition wheel; 9, contact roller; 10, go up electric installation 11, down electric installation 12, be with 13 synchronously, straining pulley; 14, swing arm; 15, cause part; 16, transmitting device.
The specific embodiment
Embodiment one: as shown in Figures 1 to 3, the fortune silk system of low-speed wire cutting wire cutting machine, comprise wire-feeding part, working portion, wire closing section, described wire-feeding part comprises wire feed buncher 3, silk volume 4, escapement 5, swing arm 14, sensor 6, straining pulley 13, accurate magnetic powder cluth 7 and optional as required transition wheel 8; Described working portion comprises electric installation 10 and following electric installation 11; Described wire closing section comprise receive a silk buncher 1, be with 12 synchronously, wire drawing wheel 2, contact roller 9 and transition wheel 8.
During work, drive volume 4 wire feed by wire feed buncher 3, by receiving silk buncher 1 by being with 12 to drive wire drawing wheel 2 rotations synchronously, contact roller 9 cooperates wire drawing wheels 2 to compress wire electrode and receives silk.
When control system when receiving a silk buncher 1 and send a speed command, receive silk buncher 1 just by the speed uniform rotation of instruction, and by being with 12 to drive wire drawing wheels 2 and at the uniform velocity rotate synchronously.At this moment; wire feed buncher 3 needs to drive the linear velocity rotation that silk volume 4 provides according to wire drawing wheel 2; because wire drawing wheel 2 has certain diameter poor with silk volume 4; and silk volume 4 its coiling diameter is in the course of the work also changing; so there are a linear differential in wire drawing wheel 2 and 4 regular meetings of silk volume; if this linear differential can not in time be eliminated or balance; to cause fracture of wire or running; cause fortune silk system cisco unity malfunction; more can not export stable tension, so must take measures the linear differential of 4 of wire drawing wheel 2 and silk volumes is regulated.
For realizing the adjustable of tension force size, wire electrode introduce described on the Silk Road before the electric installation serial connection straining pulley 13 and with the same axis of straining pulley on accurate magnetic powder cluth 7 is set.
Straining pulley 13 is as the tension force output mechanism of whole fortune silk system, and its tension force source mainly contains the tension force that opposite force that accurate magnetic powder cluth 7 energising backs are had and wire electrode self cause.
In the present embodiment, the escapement 5 that is serially connected on the wire electrode provides 3.9N the constant-tension of (newton), and accurate magnetic powder cluth 7 is total to the constant-tension of exportable 20 kinds of scopes in 0-19.6N (newton) under control.
More than two kinds of tension force all obtained effective control respectively, thereby realized the control of whole fortune silk system tension, guaranteed that finally a whole fortune system is in dynamic balance state all the time.A whole fortune system is the constant-tension of exportable 20 kinds of tension ranges in 3.9-23.5N (newton) altogether.
Embodiment two: as shown in Figures 1 to 3, under the situation of fracture of wire, go up electric installation 10 if move up, and this moment the silk volume counter-rotating regain unnecessary wire electrode, just wire electrode can break away from transition wheel 8, a whole fortune system is automatic wire feed normally just.
For avoiding the generation of this kind situation, near the frame described escapement, fixedly send the transmitting device 16 of the signal of control wire feed buncher counter-rotating, transmitting device can be contact, as also can be induction type.When the escapement part was in certain position with transmitting device, transmitting device promptly sent signal.
Particularly point out, escapement described herein comprises that partly escapement and the transmitting device that causes that is arranged on the escapement send the object of signal.
In the present embodiment, be equiped with on the central shaft of escapement and cause part 15, cause part and can touch transmitting device 16 along with the whereabouts of escapement, transmitting device sends signal and makes the counter-rotating of wire feed buncher at this moment, thereby recovery wire electrode, wire electrode just are unlikely to come off from transition wheel.The drive of tension force because the silk volume reverses when escapement, when making initiation part 15 break away from transmitting device, the wire feed buncher stops counter-rotating.
The weighing apparatus tenslator that low-speed wire cutting wire cutting machine of the present utility model is transported a system is used for wire cutting machine tool, has output tension force, output tension stability and the advantage of simple structure that can transport the silk system according to the processing needs at any time by the instruction adjustment.
Claims (2)
1. a low-speed wire cutting wire cutting machine is transported the weighing apparatus tenslator of silk system, it is characterized in that, comprise escapement, swing arm, the sensor of feed back wire feeding speed, straining pulley and accurate magnetic powder cluth, described escapement is serially connected on the wire electrode between straining pulley and silk volume, described swing arm is connected by central shaft with escapement, the non-escapement end of swing arm is hinged on the frame of wire cutting machine, the sensor of described feed back wire feeding speed is arranged on the non-escapement end of swing arm and the hinged place of frame, sensor is given the control system of in time adjusting wire feed buncher rotating speed with the wire feed rate signal feedback, and described straining pulley is serially connected in wire electrode and introduces described going up on the preceding the Silk Road of electric installation, accurate magnetic powder cluth and straining pulley are arranged on the same axis.
2. low-speed wire cutting wire cutting machine as claimed in claim 1 is transported the weighing apparatus tenslator of silk system, it is characterized in that, is fixed with the transmitting device of the signal that sends the counter-rotating of control wire feed buncher near the frame described escapement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200219561U CN201997819U (en) | 2011-01-24 | 2011-01-24 | Constant tension control device for wire conveying system of low speed wire electrical discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200219561U CN201997819U (en) | 2011-01-24 | 2011-01-24 | Constant tension control device for wire conveying system of low speed wire electrical discharge machine |
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| Publication Number | Publication Date |
|---|---|
| CN201997819U true CN201997819U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200219561U Expired - Lifetime CN201997819U (en) | 2011-01-24 | 2011-01-24 | Constant tension control device for wire conveying system of low speed wire electrical discharge machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201997819U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302370A (en) * | 2013-06-07 | 2013-09-18 | 哈尔滨工业大学深圳研究生院 | Constant-tension wire moving control device for micro electrospark wire cutting and control method thereof |
| CN104080721A (en) * | 2012-01-30 | 2014-10-01 | 三菱电机株式会社 | Wire electrode moving device |
| CN104607739A (en) * | 2014-12-25 | 2015-05-13 | 东莞华中科技大学制造工程研究院 | Low speed wire cutting copper wire tension control method and device |
| CN104722865A (en) * | 2015-03-27 | 2015-06-24 | 李冬庆 | Improved tension adjusting mechanism of wire cutting electrical discharge machine |
-
2011
- 2011-01-24 CN CN2011200219561U patent/CN201997819U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080721A (en) * | 2012-01-30 | 2014-10-01 | 三菱电机株式会社 | Wire electrode moving device |
| CN104080721B (en) * | 2012-01-30 | 2016-08-17 | 三菱电机株式会社 | Line electrode moving device |
| CN103302370A (en) * | 2013-06-07 | 2013-09-18 | 哈尔滨工业大学深圳研究生院 | Constant-tension wire moving control device for micro electrospark wire cutting and control method thereof |
| CN103302370B (en) * | 2013-06-07 | 2015-05-20 | 哈尔滨工业大学深圳研究生院 | Constant-tension wire moving control device for micro electrospark wire cutting and control method thereof |
| CN104607739A (en) * | 2014-12-25 | 2015-05-13 | 东莞华中科技大学制造工程研究院 | Low speed wire cutting copper wire tension control method and device |
| CN104607739B (en) * | 2014-12-25 | 2017-04-05 | 东莞华中科技大学制造工程研究院 | A kind of low-speed WEDM copper wire is tensioned force control method |
| CN104722865A (en) * | 2015-03-27 | 2015-06-24 | 李冬庆 | Improved tension adjusting mechanism of wire cutting electrical discharge machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 101400 Beijing city Huairou area yangsongzhen Fengxiang science and Technology Development Zone, Fengxiang Park No. 8 Patentee after: Beijing Novick Digital Equipment Co., Ltd. Address before: 101400 Beijing city Huairou area yangsongzhen Fengxiang science and Technology Development Zone, Fengxiang Park No. 8 Patentee before: Beijing Adspark Digital Equipment Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
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| CX01 | Expiry of patent term |