CN2917902Y - High accuracy electric spark digital control quick shift wire cutting machine - Google Patents
High accuracy electric spark digital control quick shift wire cutting machine Download PDFInfo
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- CN2917902Y CN2917902Y CN 200520116773 CN200520116773U CN2917902Y CN 2917902 Y CN2917902 Y CN 2917902Y CN 200520116773 CN200520116773 CN 200520116773 CN 200520116773 U CN200520116773 U CN 200520116773U CN 2917902 Y CN2917902 Y CN 2917902Y
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Abstract
A high-precision fast-feeding NC wire-cut machine is provided and is composed of a main control device, a coordinate working table, a wire storage cylinder, a thread frame, a lathe body, and a lathe motor; wherein, the coordinate working table at least comprises a planker, a guide track, a screw mandrel and a shaft joint. The screw mandrel is directly connected with the stepper motor through a shaft joint, at least a single chip controlling device is mounted on the motor of the lathe and is connected with the stepper motor. The guide track is connected with the guide track point through roll beads to form a self-enclosed rolling guide track; the screw mandrel kinematic pair adopts alloy tool steel precise triangle screw mandrel; the single chip control unit is mainly made up by 8051 single chip which is connected with the optical isolation and shaping circuit through wire-cut master control set. The single chip master control set can also receive stepper motor signals of three-phase-six-beat or five-phase-ten-beat; transform the received signals into direction signals and impulse signals; and output through the calculation of stored software 8051 single chip and the single chip master control set is connected with the stepper electromotor through the stepper motor drive.
Description
Technical field
The utility model relates to a kind of numerically controlled wire cutting machine, belong to the Digit Control Machine Tool field.
Background technology
Relevant at present product has: according to the wire mode difference of electric spark CNC wire-cut machine, be divided into numerical control quick-wire-moving linear cutting machine and numerical control be careful the silk be the low-speed wire cutting wire cutting machine tool, quick-wire-moving linear cutting machine is the lathe of distinct Chinese characteristics, the silk cutting machine tool of being careful is the lathe of foreign characteristic, the silk cutting machine tool of being careful has sound attitude precision techniques index height, lead screw pair has the compensation in pitch compensation and reverse times of crack, cut workpiece is highly polished, but, manufacturing cost of its relative quick-wire-moving linear cutting machine and use cost are all very high, quick-wire-moving linear cutting machine is compared with the silk cutting machine tool of being careful, the sound attitude precision techniques index of lathe is just poor, there is one of very big reason to be because the lead screw pair of quick-wire-moving linear cutting machine does not have the compensation in compensation of spiral shell tool and reverse times of crack, but, quick-wire-moving linear cutting machine has low cost of manufacture and the low advantage of use cost, at ask for something is not to be widely used in too high Mould Machining and the product processing, but, along with country's greatly developing to Digit Control Machine Tool, Digit Control Machine Tool will develop to exported country from an importing country, thereby the standard-required that country implements Digit Control Machine Tool is also more and more higher, China's non-traditional machine tool association particularly, as the proposition of electrical process machine association the accuracy detection of each numerical control axle of numerical control quick-wire-moving linear cutting machine being pressed new standard checks and accepts, the positioning accuracy of one of them, repetitive positioning accuracy and reverse times of crack can not be detected with the method for present uniform pitch, to detect with the method for non-uniform pitch, if formal this standard of carrying out of country, so, the quick-wire-moving linear cutting machine of China will all may be judged to substandard product.
Summary of the invention
The purpose of this utility model is to provide a kind of use 51 Series chip numerical control quick-wire-moving linear cutting machine to be realized the high accuracy electric spark numerical control quick-wire-moving linear cutting machine of the uniform pitch of each numerical control axle pitch, non-uniform pitch and reverse times of crack compensation at exist not enough of numerical control quick-wire-moving linear cutting machine and in conjunction with the requirement of relative national standards.
The purpose of this utility model is finished by following technical solution, it is mainly by master control set, coordinate setting table, wire storage tube, coil holder, lathe bed and lathe main frame, wherein coordinate setting table is made up of planker, guide rail, leading screw and shaft coupling at least, described leading screw directly is connected with stepper motor by shaft joint, and at least one monolithic processor control device is arranged separately on the lathe main frame and with stepper motor and is connected.
Described guide rail adopts ball to contact with guide rail point and constitutes a self-sealing rolling guide.
The secondary accurate angular thread leading screw of alloy tool steel that adopts of described guide screw movement.
Described monolithic processor control device mainly is made up of 8051 single-chip microcomputers, it links to each other with line cutting master control set and receives three-phase six-beat or five with shaping circuit by the photoelectricity isolation and ten claps stepper motor ring sub-signal mutually, computing through 8051 single-chip microcomputer internal memory softwares converts input signal to direction signal and pulse signal output, and joins by stepper motor driver and stepper motor.
Described photoelectricity is isolated and shaping circuit is made up of U8 (A-F), U9 (A-F) two phase inverters and U10 (A-D), U11 (A-D), U12 (A-D) optoisolator at least, its output is connected to the P0 mouth input of 8051 single-chip microcomputer U1, and the P1 end output of U1 is connected to the input of stepper motor driver.
The P1 of described 8051 single-chip microcomputer U1 and P2 mouth are connected at least demonstration and the key scanning circuit of being made up of serial input and line output circuit U5, U6 and LED1-8, DS1-3.
Also be connected at least the switching power supply circuit of forming by switching regulator U13 and D2, D3, L1 on the described 8051 single-chip microcomputer U1.
The P0 of described 8051 single-chip microcomputer U1 and P3 mouth are connected to the overtravel ON-OFF control circuit of being made up of serial input and line output circuit U14 at least.
The present invention adopts 51 Series chip to be contained in separately on the lathe main frame, separates with the master control set of wire cutting machine tool, and such benefit is to be independent of master control set and does the accuracy compensation of lathe and the compensation in reverse times of crack, also can general various control systems; Have simple in structurely, reliable, mechanically operated noise is little, and is easy to use, characteristics such as machining accuracy height.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a coordinate setting table structural representation of the present utility model.
Fig. 3 is a control circuit functional-block diagram of the present utility model.
Fig. 4 is a single chip circuit schematic diagram of the present utility model.
Fig. 5 is demonstration of the present utility model and key scanning circuit schematic diagram.
Fig. 6 is that photoelectricity of the present utility model is isolated and the shaping circuit schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail: shown in Figure 1, the utility model is mainly by master control set, coordinate setting table 4, wire storage tube 1, coil holder 2, lathe bed 3 and lathe main frame are formed, and wherein coordinate setting table 4 is made up of planker 5, guide rail 6, leading screw 7 and shaft coupling 8, described leading screw 7 directly is connected with stepper motor 9 by shaft joint 8, sees shown in Figure 2.At least one monolithic processor control device 10 is arranged separately on the lathe main frame and with stepper motor 9 and is connected.Described guide rail adopts ball 11 to contact with 6 on guide rail and constitutes a self-sealing rolling guide.The secondary accurate angular thread leading screw 7 of alloy tool steel that adopts of described guide screw movement.
Shown in Figure 3, monolithic processor control device 10 described in the utility model mainly is made up of 8051 single-chip microcomputers 12, it links to each other and receives three-phase six-beat or five with shaping circuit 13 and line cutting master control set 14 by the photoelectricity isolation and ten claps stepper motor ring sub-signals mutually, computing through 8051 single-chip microcomputers, 12 internal memory softwares converts input signal to direction signal and pulse signal output, and joins by stepper motor driver 15 and stepper motor 16.Also be connected with charactron display circuit 17 respectively, LED light 18, switching power supply 19, keyboard 20 and overtravel switch 21 with above-mentioned 8051 single-chip microcomputers 12.
Fig. 4, Fig. 5, shown in Figure 6, photoelectricity described in the utility model is isolated and shaping circuit 13 is made up of U8 (A-F), U9 (A-F) two phase inverters and U10 (A-D), U11 (A-D), U12 (A-D) optoisolator at least, its output is connected to the P0 mouth input of 8051 single-chip microcomputer U1, and the P1 end output of U1 is connected to the input of stepper motor driver 15.The P1 of described 8051 single-chip microcomputer U1 and P2 mouth are connected at least demonstration and the key scanning circuit of being made up of serial input and line output circuit U5, U6 and LED1-8, DS1-3.Also be connected at least the switching power supply circuit of forming by switching regulator U13 and D2, D3, L1 on the described 8051 single-chip microcomputer U1.The P0 of described 8051 single-chip microcomputer U1 and P3 mouth are connected to the overtravel ON-OFF control circuit of being made up of serial input and line output circuit U14 at least.
High accuracy electric spark numerical control quick-wire-moving linear cutting machine described in the utility model is an electromechanical integrated product, and it is made up of several parts of monolithic processor control device, coordinate setting table, wire storage cylinder, coil holder, lathe bed and Machine Tool Electric Appliance; Wherein: control device is a core with 51 Series chip, it is mainly realized: finish the accuracy compensation of each numerical control axle pitch and the compensation in reverse times of crack by software, finish control to the high low speed of each numerical control axle, finish the conversion and the demonstration of each numerical control axle absolute coordinate and relative coordinate, finish connection with different control systems, convert the stepper motor ring sub-signal of original control system output to direction signal and pulse signal, finish the control that two composite stepper motors is exchanged segmentation, adopt the current control mode of AC servo motor, realized accurate sine-wave subdivision electric current output, thoroughly solving traditional stepping motor system resonates when low cruise, the operation noise is big, shortcomings such as high torque is little, and starting frequency is low make the performance of stepping motor system bring up to and can match in excellence or beauty with the AC servo motor system; Coordinate setting table is mainly by planker, guide rail, secondary and the shaft coupling four parts composition of guide screw movement, wherein, planker is by base, middle carriage and work top are formed, adopt the HT200 foundry goods to handle and eliminate internal stress through secondary ageing, higher rigidity and stability are arranged, guide rail adopts the self-sealing rolling guide, ball contacts with guide rail point, the difference of sound frictional force is very little, servo-actuated is fabulous to be of value to response speed and the sensitivity that improves digital control system, driving power descends significantly, guide rail adopts alloy tool steel 20Gr surface cure process, have high wearability and heart portion and keep the favorable mechanical performance, the secondary accurate angular thread leading screw of alloy tool steel GrWMn that adopts of guide screw movement, except that the simple easily manufactured precision of structure is easy to guarantee, when matching with the suitable crack extension spring that disappears, can realize not having the gap motion muchly, realize high position precision and repetitive positioning accuracy, shaft coupling, directly be connected with leading screw by homemade adjustable positive coupling with composite stepper motor, eliminated gear-driven all drawbacks, when motor conversion direction of rotation, leading screw can obtain not having the corresponding of idle running rapidly; Wire storage cylinder and coil holder are finished the quick-wire-moving linear cutting machine wire electrode and are stored, lead and motion; The lathe bed material is a foundry goods, is the supporting and the immobilizing foundation of coordinate setting table, wire storage cylinder, coil holder, adopts case structure, has enough strength and stiffness; Machine Tool Electric Appliance is finished control of the rotating of wire storage cylinder etc.
The utility model adopts 51 Series chip to be contained in separately on the lathe main frame, separate with the master control system of wire cutting machine tool, getting well like this is in and can be independent of master control system and does the accuracy compensation of lathe and the compensation in reverse times of crack, also can general various control systems;
The positioning accuracy compensation principle that the utility model carries out is:
For being example just, from x=0, is an error testing point with every 20mm (being the x=20000 micron) with the X-axis error, is that starting point thinks that error is 0 also with x=0, and the positioning accuracy error of establishing first test point is the es micron, then has:
(20000/es)＝(x/e)………………………………………………(1)
Be e*20000=x*ex or es*x-e*20000=0
In the formula, x is the x axial coordinate since 0, and e is the position error that x is ordered, and unit is micron.
Obviously, when error e runs up to 1 micron, just should compensate.For positive error, should planker be made a move less, otherwise should make a move more.For convenience of calculation, set up error discriminant function F:
F＝es*x-e*20000
When making x=0, F=0 thinks that promptly this time error is 0.
Whenever x forward feeding one step, i.e. x+1 → x, new F should be:
F (newly)=es* (x+1)-e*20000=es*x+es-es*20000=F (old)+es
Be that the every forward of x makes a move, answer F+es → F.
On the other hand, according to (1) formula, have:
x＝(20000/es)*e
When error meets or exceeds 1, e＞=1, x＞=20000/es at this moment
Its geometric meaning is: when x has walked the 20000/es step, accumulated error e will reach 1 micron.
Because during x=0, F=0.X whenever makes a move, F+es → F.Obviously, after x has walked 20000/es step, F should be 20000/es es addition with, i.e. F=es* (20000/es)=20000.Therefore when F＞=20000, should compensate, with F-20000 → F, begin to calculate next compensation point after having compensated.
Because in 20000 microns length, error is the es micron altogether, promptly must compensate es time.After compensation es time, promptly change next compensator section over to.
In like manner, if x is when oppositely walking, x-1 → x makes that the F initial value is 20000, and new F should be:
F-es → F when F＜=0, should make planker make a move less equally, and F+20000 → F changes next compensation point then over to, and es compensation point all compensated in this section, changes next compensator section again over to.
If no matter error amount for negative, then moves forward or backwards, when arriving compensation point, all should make a move more.
The utility model adopts the uniform pitch of the monolithic realization of 51 series to each numerical control axle pitch; the accuracy compensation in non-uniform pitch and reverse times of crack; the algorithm that pitch compensation adopts each measuring section all to mend; the data of compensation are kept in the EEROM of single-chip microcomputer; it is convenient to revise like this and preserve; power-off protection is reliable; and hardware circuit is simple; through test to an old quick-wire-moving linear cutting machine; when it not being carried out accuracy compensation; the positioning accuracy of test is: about X-axis 0.045MM; about Y-axis 0.05MM; reverse times of crack is: X-axis 0.004MM; Y-axis 0.005MM; according to the test of national new standard (with the Reinshaw double-frequency laser tester test of import), under the uniform pitch situation, retest five times on average directly be: positioning accuracy; X-axis 0.004MM; Y-axis 0.005MM, reverse times of crack, X-axis 0.0015MM; Y-axis 0.0015MM; under non-pitch situation, retest five times on average directly be: positioning accuracy, X-axis 0.007MM; Y-axis 0.008MM; reverse times of crack, X-axis 0.0015MM, Y-axis 0.0015MM; the be careful positioning accuracy 0.005MM of silk cutting machine tool, reverse times of crack 0.001MM to 0.002MM.
The utility model adopts two-phase hybrid stepping motor direct-connected by special shaft coupling and screw mandrel, adopts to exchange subdivision driver, has the simple energy consumption of drive circuit low like this, and frame for movement is also simple and reliable, and mechanically operated noise is little.
Guide rail described in the utility model adopts the self-sealing rolling guide, ball contacts with guide rail point, the difference of sound frictional force is very little, servo-actuated is fabulous to be of value to response speed and the sensitivity that improves digital control system, driving power descends significantly, guide rail adopts alloy tool steel 20Gr surface cure process, have high wearability and heart portion and keep the favorable mechanical performance, the accurate pitch of the secondary employing of guide screw movement alloy tool steel GrWMn is 1 millimeter angular thread leading screw, except that the simple easily manufactured precision of structure is easy to guarantee, when matching with the suitable crack extension spring that disappears, can realize not having the gap motion muchly, realize high position precision and repetitive positioning accuracy.
Claims (8)
1, a kind of high accuracy electric spark numerical control quick-wire-moving linear cutting machine, it is mainly by master control set, coordinate setting table, wire storage tube, coil holder, lathe bed and lathe main frame, wherein coordinate setting table is made up of planker, guide rail, leading screw and shaft coupling at least, it is characterized in that described leading screw directly is connected with stepper motor by shaft joint, at least one monolithic processor control device is arranged separately on the lathe main frame and with stepper motor and is connected.
2, high accuracy electric spark numerical control quick-wire-moving linear cutting machine according to claim 1 is characterized in that described guide rail adopts ball to contact with guide rail point and constitutes a self-sealing rolling guide.
3, high accuracy electric spark numerical control quick-wire-moving linear cutting machine according to claim 1 is characterized in that the secondary accurate angular thread leading screw of alloy tool steel that adopts of described guide screw movement.
4, high accuracy electric spark numerical control quick-wire-moving linear cutting machine according to claim 1, it is characterized in that described monolithic processor control device mainly is made up of 8051 single-chip microcomputers, it links to each other with line cutting master control set and receives three-phase six-beat or five with finishing circuit by the photoelectricity isolation and ten claps stepper motor ring sub-signal mutually, computing through 8051 single-chip microcomputer internal memory softwares converts input signal to direction signal and pulse signal output, and joins by stepper motor driver and stepper motor.
5, high accuracy electric spark numerical control quick-wire-moving linear cutting machine according to claim 4, it is characterized in that described photoelectricity is isolated and finishing circuit is made up of U8A-F, U9A-F two phase inverters and U10A-D, U11A-D, U12A-D optoisolator at least, its output is connected to the P0 mouth input of 8051 single-chip microcomputer U1, and the P1 end output of U1 is connected to the input of stepper motor driver.
6,, it is characterized in that the P1 of described 8051 single-chip microcomputer U1 and P2 mouth are connected at least demonstration and the key scanning circuit of being made up of serial input and line output circuit U5, U6 and LED1-8, DS1-3 according to claim 4 or 5 described high accuracy electric spark numerical control quick-wire-moving linear cutting machines.
7, high accuracy electric spark numerical control quick-wire-moving linear cutting machine according to claim 6 is characterized in that also being connected on the described 8051 single-chip microcomputer U1 at least the switching power supply circuit of being made up of switching regulator U13 and D2, D3, L1.
8, high accuracy electric spark numerical control quick-wire-moving linear cutting machine according to claim 7 is characterized in that the P0 of described 8051 single-chip microcomputer U1 and P3 mouth are connected to the overtravel ON-OFF control circuit of being made up of serial input and line output circuit U14 at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520116773 CN2917902Y (en) | 2005-11-25 | 2005-11-25 | High accuracy electric spark digital control quick shift wire cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200520116773 CN2917902Y (en) | 2005-11-25 | 2005-11-25 | High accuracy electric spark digital control quick shift wire cutting machine |
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| CN2917902Y true CN2917902Y (en) | 2007-07-04 |
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| CN 200520116773 Expired - Fee Related CN2917902Y (en) | 2005-11-25 | 2005-11-25 | High accuracy electric spark digital control quick shift wire cutting machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786232A (en) * | 2010-03-10 | 2010-07-28 | 苏州三光科技股份有限公司 | Body structure of linear cutting machine |
| CN102419266A (en) * | 2010-09-27 | 2012-04-18 | 华东理工大学 | Micro sample sampling system based on electric spark forming principle |
| CN102528189A (en) * | 2010-12-24 | 2012-07-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Processing technique of high-precision thin-walled ring unit |
| CN104475891A (en) * | 2014-10-30 | 2015-04-01 | 苏州市宝玛数控设备有限公司 | Intelligent controller for controlling short-cycle wire threading of quick wire threading electrical discharge machine tool |
| CN105290551A (en) * | 2015-12-05 | 2016-02-03 | 天津鼎天斯凯特机械有限公司 | Efficient line cutting machine for machining |
| CN107738298A (en) * | 2017-10-26 | 2018-02-27 | 佛山汇众森泰科技有限公司 | A kind of modified ABS alloy material processing unit (plant) and processing method |
-
2005
- 2005-11-25 CN CN 200520116773 patent/CN2917902Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786232A (en) * | 2010-03-10 | 2010-07-28 | 苏州三光科技股份有限公司 | Body structure of linear cutting machine |
| CN102419266A (en) * | 2010-09-27 | 2012-04-18 | 华东理工大学 | Micro sample sampling system based on electric spark forming principle |
| CN102528189A (en) * | 2010-12-24 | 2012-07-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Processing technique of high-precision thin-walled ring unit |
| CN102528189B (en) * | 2010-12-24 | 2013-09-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Processing technique of high-precision thin-walled ring unit |
| CN104475891A (en) * | 2014-10-30 | 2015-04-01 | 苏州市宝玛数控设备有限公司 | Intelligent controller for controlling short-cycle wire threading of quick wire threading electrical discharge machine tool |
| CN105290551A (en) * | 2015-12-05 | 2016-02-03 | 天津鼎天斯凯特机械有限公司 | Efficient line cutting machine for machining |
| CN107738298A (en) * | 2017-10-26 | 2018-02-27 | 佛山汇众森泰科技有限公司 | A kind of modified ABS alloy material processing unit (plant) and processing method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20131125 |