CN109799779A - The Line Cutting Machine Control method and device of digital control system is cut based on gold - Google Patents
The Line Cutting Machine Control method and device of digital control system is cut based on gold Download PDFInfo
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- CN109799779A CN109799779A CN201711135459.2A CN201711135459A CN109799779A CN 109799779 A CN109799779 A CN 109799779A CN 201711135459 A CN201711135459 A CN 201711135459A CN 109799779 A CN109799779 A CN 109799779A
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Abstract
The present invention provides a kind of Line Cutting Machine Control method, apparatus and computer storage medium that digital control system is cut based on gold, which comprises determines that one of second machining locus of the first machining locus and second surface for being located at workpiece first surface is arc track；First machining locus and second machining locus are split respectively, to obtain first with predetermined quantity group continuous linear section corresponding with first machining locus and second group of continuous linear section with the predetermined quantity corresponding with second machining locus；On first machining locus and the respective machine direction of the second machining locus, successively simultaneously in first group of continuous linear section and second group of continuous linear section described in interpolation aligned identical position straightway；The wire electrode of control wire cutting machine processes the workpiece.The above method of the invention allows gold to cut the processing that digital control system is used directly to wire cutting shaped face, improves the versatility of equipment.
Description
Technical field
The present invention relates to Computerized Numerical Control processing technology fields, relate more specifically to a kind of wire cutting machine that digital control system is cut based on gold
Control method and device and Line Cutting Machine Control equipment and storage medium.
Background technique
Wire cutting machine (also known as electric spark wire cutting machine) basic functional principle (is claimed using the fine wire of continuous moving
For wire electrode) make electrode, pulse spark electric discharge removal metal, excision forming are carried out to workpiece.It is mainly used for processing various shapes
Shape complexity and accurate tiny workpiece, such as punch-pin, cavity plate, punch-die, fixed plate, the stripper of blanking die etc., forming tool,
The metal electrode of template, Electric Discharge Machining, various fine hole slots, narrow slit, arbitrary curve etc., small with machining allowance,
The outstanding advantages such as machining accuracy is high, with short production cycle, manufacturing cost is low, are widely applied in production.
Due to the particularity of wire cutting special-purpose numerical control system, domestic and international each linear cutting equipment manufacturing enterprise is all according to each self-produced
The mechanical structure of product, electric source modes, TRAJECTORY CONTROL mode, process characteristic develop dedicated digital control system.Currently, state interior lines
Cutting off machine manufacturing enterprise scale is all little, and various aspects strength is weaker, and wire cutting special-purpose numerical control system is mostly auxiliary with PC machine
Hardware platform is formed with corresponding interface card, it is various dedicated to develop corresponding software composition according to the process requirements of wire cutting machine tool
Wire-electrode cutting numerical control system, although this kind of system can substantially meet the requirement of numerically controlled wire cutting machine, system in certain phase
Integral Control Technology level it is not high, compatibility, reliability it is poor, constrain China's wire cutting numerically-controlled machine tool industrial technology into
The development of one step.
Gold cuts no matter digital control system in scale or whole control technique all reaches higher development level at present, can
Also highly developed in property and compatibility.Therefore using domestic general gold cut four-axle linked bus-type numerical control system (such as: west gate
Sub 840, Central China 848), it, can to replace the current country to be aided with the wire cutting hardware platform that corresponding interface card forms with PC machine
The current linear cutter industry problem encountered of very good solution.But in cutting on line processing, " etc. up and down is being cut
When the workpiece such as cone ", " becoming cone ", " laid abnormity ", different from traditional metal cutting machine, the tool used is a wire electrode, electricity
One of polar filament is controlled by two universal driving shafts of numerically-controlled machine tool, forms a processing plane；Other end is by other two universal driving shaft
It controls, forms another processing plane；Upper and lower two planes can the different track of simultaneous processing (for example, straight line or circle
Arc), and the silk thread tension to be kept constant in process.
Just because of gold cuts digital control system, it cannot achieve two plane synchronous processings of different shapes during wire cutting, because
This it is necessary to cut the control algolithm of digital control system to gold to improve so that improved gold cut digital control system can be direct
For the processing profiled face of wire cutting machine.
Summary of the invention
In order to solve the problems, such as that gold cuts digital control system for existing shaped face synchronous processing during wire cutting, the present invention
Provide it is a kind of based on gold cut the Line Cutting Machine Control method of digital control system, the control system of control device and wire cutting machine and
Storage medium.
According to the first aspect of the invention, a kind of Line Cutting Machine Control method that digital control system is cut based on gold, packet are provided
Include following steps:
The second machining locus of the first machining locus and second surface that are located at workpiece first surface is determined, wherein described the
One machining locus and second track are machining locus to be synchronized, and first machining locus is arc track；
First machining locus and second machining locus are split respectively, to obtain and first processing
Corresponding first with the predetermined quantity group continuous linear section in track and it is corresponding with second machining locus have institute
State second group of continuous linear section of predetermined quantity；
On first machining locus and the respective machine direction of the second machining locus, successively described in interpolation simultaneously
The straightway of aligned identical position in first group of continuous linear section and second group of continuous linear section；
It is based on the interpolation as a result, control wire cutting machine wire electrode the workpiece is processed.
Further, when second machining locus is straight path, the predetermined quantity depends on described first and adds
Work track.
Further, first group of continuous linear section and second group of continuous linear section are continuous isometric straight line
Section.
Further, the predetermined quantity forcing depending on the total length of the arc track, arc radius and setting
Nearly franchise.
Further, according to the arc length of dividing the obtained each circular curve of the first machining locus and described
The beginning and end coordinate of first machining locus calculates each straightway in first group of continuous linear section described first
Feeding increment on corresponding first universal driving shaft in surface and the second linkage axis direction；
It is practical that feeding increment synthesis on first universal driving shaft and the second linkage axis direction is converted into each universal driving shaft
Increment of motion.
Further, according to the total length of second machining locus, second machining locus dividing number and
The beginning and end coordinate of second machining locus, calculate described second group that second machining locus is divided into it is continuous
Each straightway is in the corresponding third universal driving shaft in surface where second machining locus and four-axle linkage axis direction in straightway
On feeding increment, wherein second group of continuous linear section is continuous isometric straightway；
Feeding increment synthesis on third universal driving shaft and four-axle linkage axis direction is converted into each universal driving shaft actual motion
Increment.
Further, when second machining locus is arc track, the predetermined quantity depends on described first and adds
Arc length and the product of radius are one of larger in work track and second machining locus.
Further, first group of continuous linear section and second group of continuous linear section are continuous isometric straight line
Section.
Further, the predetermined quantity depend in first machining locus and second machining locus arc length with
One of the larger total length of the product of radius, arc radius and setting approach franchise.
Further, according to the arc length of dividing the obtained each circular curve of the first machining locus and described
The beginning and end coordinate of first machining locus calculates each straightway in first group of continuous linear section described first
Surface it is corresponding first, second linkage axis direction on feeding increment, and by it is described first, second linkage axis direction on into
The first, second universal driving shaft actual motion increment is converted to increment synthesis；
According to the arc length and the second processing rail for dividing the obtained each circular curve of the second machining locus
The beginning and end coordinate of mark, each straightway calculated in second group of continuous linear section are corresponding in the second surface
Feeding increment in third, four-axle linkage axis direction, and the feeding increment in the third, four-axle linkage axis direction is synthesized
Be converted to the third, tetrad moving axis actual motion increment.
Further, institute will be divided into for first machining locus of arc track and/or second machining locus
One group of predetermined quantity continuously isometric circular curve is stated, and two endpoint lines of the head and the tail of each circular curve are obtained one
Group continuous linear section, wherein the arc track is approached in the track that one group of continuous linear section is formed.
The second aspect of the present invention additionally provides a kind of Line Cutting Machine Control device that digital control system is cut based on gold, including such as
Lower module:
Track determining module adds for determining positioned at the first machining locus of workpiece first surface and the second of second surface
Work track, wherein first machining locus and second track are machining locus to be synchronized, and first machining locus
For arc track；
Line segmentation module, for first machining locus and second machining locus to be split respectively, with
It obtains first with predetermined quantity group continuous linear section corresponding with first machining locus and is processed with described second
The corresponding second group of continuous linear section with the predetermined quantity in track；
Interpolation module, in first machining locus and the respective machine direction of the second machining locus, according to
The straightway of aligned identical position in first group of continuous linear section described in secondary while interpolation and second group of continuous linear section；
Control module, for based on the interpolation as a result, the wire electrode of control wire cutting machine adds the workpiece
Work.
Further, when second machining locus is straight path, the predetermined quantity depends on described first and adds
Work track.
Further, first group of continuous linear section and second group of continuous linear section are continuous isometric straight line
Section.
Further, the predetermined quantity forcing depending on the total length of the arc track, arc radius and setting
Nearly franchise.
Further, further include the first increment composite calulation module:
For being added according to the arc length for dividing the obtained each circular curve of the first machining locus and described first
The beginning and end coordinate of work track calculates each straightway in first group of continuous linear section in the first surface pair
Feeding increment on the first universal driving shaft answered and the second linkage axis direction；
It is practical that feeding increment synthesis on first universal driving shaft and the second linkage axis direction is converted into each universal driving shaft
Increment of motion.
Further, further include the second increment composite calulation module:
For according to the total length of second machining locus, the dividing number of second machining locus and described
The beginning and end coordinate of two machining locus calculates second group of continuous linear section that second machining locus is divided into
In each straightway on the corresponding third universal driving shaft in surface where second machining locus and four-axle linkage axis direction into
To increment, wherein second group of continuous linear section is continuous isometric straightway；
Feeding increment synthesis on third universal driving shaft and four-axle linkage axis direction is converted into each universal driving shaft actual motion
Increment.
Further, when second machining locus is arc track, the predetermined quantity depends on described first and adds
Arc length and the product of radius are one of larger in work track and second machining locus.
Further, first group of continuous linear section and second group of continuous linear section are continuous isometric straight line
Section.
Further, the predetermined quantity depend in first machining locus and second machining locus arc length with
One of the larger total length of the product of radius, arc radius and setting approach franchise.
Further, further include
Third increment composite calulation module, for according to the segmentation obtained each circular curve of the first machining locus
Arc length and first machining locus beginning and end coordinate, calculate each in first group of continuous linear section
Feeding increment of the straightway in the corresponding first, second linkage axis direction of the first surface, and will be described first, second
Feeding increment synthesis in linkage axis direction is converted to the first, second universal driving shaft actual motion increment；
4th increment composite calulation module, for according to the segmentation obtained each circular curve of the second machining locus
Arc length and second machining locus beginning and end coordinate, calculate each in second group of continuous linear section
Feeding increment of the straightway in the corresponding third of the second surface, four-axle linkage axis direction, and will be in the third, the 4th
Feeding increment synthesis in linkage axis direction is converted to the third, tetrad moving axis actual motion increment.
Further, the line segmentation module will be for first machining locus of arc track and/or described second
Machining locus is divided into one group of the predetermined quantity continuously isometric circular curve, and by the head and the tail two of each circular curve
A endpoint line obtains one group of continuous linear section, wherein the circular arc rail is approached in the track that one group of continuous linear section is formed
Mark.
The third aspect of the present invention additionally provides a kind of Line Cutting Machine Control equipment, comprising:
At least one processor；And
Memory, the memory store the executable instruction of at least one described processor, and described instruction is described
At least one processor makes the Line Cutting Machine Control equipment be based on gold for realizing above-mentioned any described one kind when executing
Cut the Line Cutting Machine Control method of digital control system.
The fourth aspect of the present invention additionally provides a kind of computer readable storage medium, is stored with computer in storage medium
Instruction is based on gold when Line Cutting Machine Control equipment executes the computer instruction for realizing above-mentioned any described one kind
Cut the Line Cutting Machine Control method of digital control system.
Above-mentioned technical proposal of the invention, realizes traditional gold and cuts digital control system and add for the synchronization of wire cutting shaped face
Work changes in the case where not using wire cutting special-purpose numerical control system only by the control algolithm for cutting digital control system to gold
Into being considerably improved the general geological coodinate system of equipment.
Detailed description of the invention
By illustrating the preferred embodiment of the present invention with reference to the accompanying drawing, above and other target of the invention, spy will be made
Advantage of seeking peace is clearer, in which:
Fig. 1 is the schematic diagram of wire cutting machine in the prior art；
Fig. 2 is a kind of Line Cutting Machine Control device that digital control system is cut based on gold that first embodiment of the invention provides
Flow chart；
Fig. 3 is that the amount of exercise that programs workpiece that the preferred embodiment of first embodiment of the invention provides is converted to servo linkage
The schematic diagram of the actual motion amount of axis；
Fig. 4 is that the amount of exercise that programs workpiece that the preferred embodiment of first embodiment of the invention provides is converted to servo linkage
The schematic diagram of the actual motion amount of axis；
Fig. 5 is that the amount of exercise that programs workpiece that the preferred embodiment of first embodiment of the invention provides is converted to servo linkage
The schematic diagram of the actual motion amount of axis；
Fig. 6 is a kind of wire cutting machine that digital control system is cut based on gold that the preferred embodiment of second embodiment of the invention provides
The structure chart of control device；
Fig. 7 is a kind of structure chart for Line Cutting Machine Control equipment that third embodiment of the invention provides；
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
When part is "connected" to another element, it can be directly connected to other elements, or there may also be intermediary elements.In addition,
" connection " used herein may include being wirelessly connected.Wording "and/or" used herein includes one or more associated
The whole for listing item or any cell and all combination.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless idealization or meaning too formal otherwise will not be used by specific definitions as here
To explain.
Fig. 1 shows the basic structure of wire cutting machine, and lathe mainly includes wire electrode 1, workpieces processing 2, numerical control turntable
3, wherein numerical control turntable is placed on platen 5 by insulation board 4, two connection by numerically-controlled machine tool of wire electrode 1
Moving axis (X, Y-axis) is controlled by guide wheel；Other end is controlled by other two universal driving shaft (U, V axis) by guide wheel.
When wire cutting cutting workpiece, it is preferred that the point on the i.e. upper and lower finished surface track in upper and lower two surfaces of workpiece is with perseverance
Speed correspondence movement, and process time used in upper and lower two surface tracks is strictly equal after processing is completed, but gold cuts numerical control system
System is the synchronous processing that cannot achieve laid abnormity face, because it is originally cutting tool that gold, which cuts the control object of digital control system,
Cutting way is entirely different with wire cutting, is not two surface synchronization cuttings up and down, it is therefore desirable to cut NC instruction in gold
On the basis of be further improved the synchronous requirement that control algolithm is just able to satisfy processing plane up and down, referring specifically to following examples.
Fig. 2 is a kind of Line Cutting Machine Control method that digital control system is cut based on gold that first embodiment of the invention provides
100 flow chart.The embodiment is cut through by gold and is illustrated for four-shaft numerically controlled system, but other suitable gold cut numerical control
System is also applicable in control method in this present embodiment.
The Line Cutting Machine Control method 100 for cutting digital control system based on gold includes the following steps:
Step S101 determines the second machining locus of the first machining locus and second surface that are located at workpiece first surface,
Wherein first machining locus and second track are machining locus to be synchronized, and first machining locus is circular arc rail
Mark；
Specifically, before cutting each pass, user will be to work pieces process profile founding mathematical models, by the first table of workpiece
The processing rail in face (corresponding one of XY axial plane or UV axial plane) and second surface (corresponding one of XY axial plane or UV axial plane)
Mark is divided into several groups machining locus to be synchronized, each group of machining locus to be synchronized include positioned at first surface one section of circular arc or
Straight line, and positioned at the one section of circular arc or straight line of second surface, such as: workpiece surface is pre-cut as square, and lower surface is pre-
It is cut into circle, then circular 1/4 arc length of a line and lower surface of the square of usual upper surface is a pair of of synchronous processing rail
Mark.The programming mode cut for the upper and lower surface machining locus of workpiece with conventional gold writes the numerical control based on workpiece coordinate system respectively
Processing program, such as: G code processing program.
Such as: workpiece shapes are square top and round bottom, then can be divided into four groups of synchronous processing tracks, and every group includes synchronous processing
Upper surface straight line and lower surface circular arc.
Then the one-to-one G code track program of upper and lower surface is carried out synthesis programming line by line, synthetic method is as follows:
(1) G code is all linear interpolation synthesis: G01 (G00) X_Y_U_V_ such as in XY axis row corresponding with UV axial plane；
(2) as there are circular interpolation synthesis: G02 (G03) X_Y_U_V_I_J_ for G code in XY axis row corresponding with UV axial plane
L_M_N_；
Wherein, L=1 indicates that X/Y plane is circular interpolation；L=2 indicates that UV plane does circular interpolation；L=3 indicates XY, UV
Plane does circular interpolation simultaneously；I, J indicate X/Y plane origin；M, N indicate UV plane origin coordinate.
Because the present invention uses general gold to cut digital control system, interpolation module built in digital control platform is different from industrial siding
Cutting machine digital control platform, therefore cannot achieve the double interpolator control algolithms of the distinctive shaped face of dedicated platform, in order to guarantee workpiece
The synchronization of laid abnormity surface processing, the situation of an especially surface curve and a face straight line, it is necessary to arc track and straight line
Do special synchronization process in track:
Firstly, reading G code line by line in order, and judge to whether there is arc track in current line G code motion profile,
If there are arc tracks for the machining locus to be synchronized on any one of two surfaces of workpiece, no matter second surface is circular arc
Track or straight path, the specially treated for requiring to be step S102 is to realize synchronous interpolation；If two surfaces of workpiece
Machining locus to be synchronized be straight path, then synchronous interpolation up and down can be realized by not needing line segmentation, because line is cut
The wire electrode of cutting mill is when cutting two straight paths, regardless of whether synchronous cutting, finally obtained all will be straight line,
It is not in any error.
First machining locus and second machining locus are split by step S102 respectively, with acquisition and institute
State corresponding first with the predetermined quantity group continuous linear section of the first machining locus and opposite with second machining locus
The second group of continuous linear section with the predetermined quantity answered；
Specifically, in order to guarantee that the synchronization interpolation of upper and lower surface track (completes the process two surface tracks institutes up and down
Process time should be stringent equal), when the machining locus to be synchronized of first surface and second surface in discovery G code exists
When arc track, just the arc track is indicated with the continuous linear section of one group of predetermined quantity, such as: with a large amount of small straight line
Section it is unlimited approach the circular curve.Then the machining locus to be synchronized in another surface is also used into the continuous of one group of identical quantity
Straightway indicate, if the machining locus to be synchronized on another surface is also circular arc, approach method is identical, if another surface to
Synchronous processing track is straight path, then the straight path is directly divided into the continuous linear section of one group of identical quantity.Finally
Two groups of continuous linear sections are sequentially arranged on the machine direction of respective machining locus to be synchronized, such as: wire cutting machine
Wire electrode can cut the upper and lower surface of workpiece simultaneously, and there are a cutting starting point, lower surfaces for the machining locus to be synchronized of upper surface
Also it corresponds to there are cutting starting point, in upper surface, the cutting starting point of machining locus to be synchronized is to small straightway carry out sequence volume
Number, i.e., successively by the continuous linear segment number divided be 0000,0001,0002 ..., 1000；Same mode is to following table
The continuous linear section in face carries out serial number, be followed successively by 0000,0001,0002 ..., 1000.
Step S103, on first machining locus and the respective machine direction of the second machining locus, successively together
When interpolation described in first group of continuous linear section and second group of continuous linear section aligned identical position straightway；
Specifically, interpolation track obtains in the following way: the wire electrode of wire cutting machine is at upper and lower surface two to same
On the respective machine direction for walking machining locus, while the straightway that interpolation two numbers are 0000, then while interpolation two are compiled
Number be 0001 straightway, and so on, then simultaneously interpolation two number be 0002,0003 ... 1000 straightway, from
And form the synchronous processing track of upper and lower surface.Since every group of continuous linear section is successively serial number in the direction of the machine,
So the straightway of aligned identical position in two groups of continuous linear sections can be synchronized interpolation by above-mentioned interpolation mode, to protect
Card upper and lower surface machining locus to be synchronized can start simultaneously at while terminate.
Step S104, it is based on the interpolation as a result, the wire electrode of control wire cutting machine processes the workpiece.
According to the above-mentioned interpolation of interpolator rule, the wire electrode for controlling wire cutting machine carries out moving interpolation, thus to workpiece
It is processed.
In the above-described embodiment, it is preferred that when second machining locus is straight path, the predetermined number is measured
Certainly in first machining locus.
Specifically, when there is circular arc and straight line in laid abnormity face, in order to guarantee the synchronization of interpolation, need circular arc and
Straight line is all divided into same amount of small straightway, then simultaneously each straightway of interpolation.If being first split to straight path,
It no matter is theoretically that how many straightway will not all have an impact the machining accuracy of workpiece by line segmentation, because wire electrode is cut
100 steps of 1 step and cutting, 1000 steps of cutting, 10000 steps of cutting are all to carry out straight cuts, and workpiece surface can all form identical
Straight path, the only difference of cutting times；But the dividing number of arc track represents several steps of wire electrode point and completes to justify
The cutting of arc track, the dividing number the high more can perfectly approach arc track, i.e. Workpiece Machining Accuracy is higher, and dividing number is got over
The low shape for more deviateing arc track itself, i.e. Workpiece Machining Accuracy are lower.It can be seen that if first dividing straight path
It cuts, dividing number may be mismatched with target machining accuracy.Therefore, the dividing number that should first determine arc track, full
After the requirement on machining accuracy of sufficient arc track, then the dividing number determined is used for the segmentation to straight path, it in this way can be most
The requirement for meeting machining accuracy of big degree, and numerical control program execution efficiency highest.
In the above-described embodiment, it is preferred that first group of continuous linear section and second group of continuous linear Duan Jun
For continuous isometric straightway.
Specifically, with one group continuously isometric straightway to approach arc track and straight path can obtain optimal cut
Cut precision, and more convenient, faster calculating process.Although that is, saying the number of segment for the straightway that machining locus is divided into
More, approximation ratio is higher, and cutting precision is also higher, but in the case where the straightway number of segment of segmentation is fixed, it is optimal
The mode of approaching be with one group continuously isometric straightway approach, in this way can most accurate simulation arc track.In addition, calculating
When the origin coordinates point of each straightway, isometric straightway is also more regular than non-isometric straightway and convenient more, can be very big
Simplification calculating process, substantially reduce programming difficulty, improve the efficiency that program executes.
In the above-described embodiment, it is preferred that the predetermined quantity depends on the total length of the arc track, circular arc half
Diameter and setting approach franchise.Specific calculation is as follows:
Assuming that the total length for a certain surface circular arc of workpiece for needing to process is alf_len, arc radius r needs to divide
Every segment arc length be alf, whereinE approaches franchise to be preset, calculates circular arc need according to above content
The quantity cnt for the continuous small arc-shaped to be cut:
Cnt=alf_len/alf formula (2)
In the above-described embodiment, it is preferred that according to the segmentation obtained each circular curve of the first machining locus
Arc length and first machining locus beginning and end coordinate, calculate each in first group of continuous linear section
Feeding increment of the straightway on corresponding first universal driving shaft of the first surface and the second linkage axis direction；It will be described first
Feeding increment synthesis on universal driving shaft and the second linkage axis direction is converted to each universal driving shaft actual motion increment.
Assuming that XY processing plane is first surface, it is second surface that UV, which processes plane,.Calculate each continuous isometric straightway
(length is similar to continuous isometric circular curve) X-direction of origin-to-destination and the incremental value of Y direction:
Sina=sin (alf) formula (3)
I_cosa=(1-cos (alf)) formula (4)
Δxi=-xi*i_cosa-yi* sina formula (5)
Δyi=-yi*i_cosa+xi* sina formula (6)
Δ x in above formulai、ΔyiFor the incremental value of X-direction and Y direction, i is that continuous isometric straightway is opened from starting point
The serial number of beginning, 0≤i；
The terminal point coordinate of current straightway is calculated according to respectively the link incremental value of axis direction of workpiece upper and lower surface:
xi+1=xi+ΔxiFormula (7)
yi+1=yi+ΔyiFormula (8)
Next, since wire cutting machine moving interpolation will be finally reflected on actual axis servomotor, and workpiece upper and lower surface
Programming amount of exercise and the actual motion amount of each processing plane servo universal driving shaft be different, referring specifically to shown in Fig. 3-5, because
This, needs the feeding increment synthesis in the first, second linkage axis direction being converted to each universal driving shaft actual motion increment.Specifically
Method is as follows:
Such as Fig. 3, wherein C, D point are servo X, and U axis motion control point, A, B point are the point of 6 upper and lower surface of workpiece, h1To watch
Take the distance between XY axial plane and 6 upper surface of workpiece, h2For the distance between servo UV axial plane and 6 lower surface of workpiece, h is
Servo XY axial plane is the distance between to servo UV axial plane.If keeping A point position constant, B point is along X-axis move distance x=
BB1, then wire electrode position is as shown in Figure 4 after the completion of moving.
At this point, point D move distance DD1Are as follows:
At this point, point C move distance CC1Are as follows:
Wherein, BB1Amount of exercise, i.e. the actual cut amount of exercise of upper and lower surface synchronous processing track, CC are programmed for workpiece 61With
DD1For four-axle linkage lathe axis servomotor it is practical walk increment of motion.
If keeping B point position constant, A point is along X-axis move distance x=AA2, then wire electrode position such as Fig. 5 after the completion of moving
It is shown.
At this point, point D move distance are as follows:
At this point, point C move distance CC2Are as follows:
Calculate synthetic quantity when XU axis moves synchronously in X-coordinate direction:
The synthetic quantity of X-axis:
The synthetic quantity of U axis:
It should be noted that synthesis increment of the YV axis in Y-coordinate axle can refer to synthetic method of the XU axis in X-coordinate axle
It is calculated, details are not described herein.
In the above-described embodiment, it is preferred that according to the total length of second machining locus, second machining locus
Dividing number and second machining locus beginning and end coordinate, calculate what second machining locus was divided into
In second group of continuous linear section each straightway in the corresponding third universal driving shaft in surface where second machining locus and
Feeding increment in four-axle linkage axis direction, wherein second group of continuous linear section is continuous isometric straightway；It will be in third
Feeding increment synthesis on universal driving shaft and four-axle linkage axis direction is converted to each universal driving shaft actual motion increment.
Specifically, in the above-described embodiment, the machining locus to be synchronized of workpiece lower surface is straight path, under
Surface linear interpolation starting point (u1,v1) and terminal point coordinate (un,vn) and arc track be divided into the number of segment i=cnt of small straightway
(segments that arc track segments is straight path) calculates the every segment straight line in lower surface in the average increment of two axis
Value:
1)Δu1=(un-u1)/cnt(Δu1=Δ u2...=Δ ui) formula (15)
2)Δv1=(vn-v1)/cnt(Δv1=Δ v2...=Δ vi) formula (16)
According to starting point, the terminal point coordinate of above-mentioned average increment value and straight path, available each small straightway is risen
Point and terminal point coordinate, details are not described herein.
Next, since wire cutting machine moving interpolation will be finally reflected on actual axis servomotor, and workpiece upper and lower surface
Programming amount of exercise and the actual motion amount of each processing plane servo universal driving shaft be different, therefore, it is necessary to will be in third, the
Feeding increment synthesis in four-axle linkage axis direction is converted to each universal driving shaft actual motion increment.Specific method refers to above-mentioned formula
(9)-(14), details are not described herein.
In the above-described embodiment, it is preferred that when second machining locus is arc track, the predetermined number is measured
Certainly in first machining locus and second machining locus, arc length and the product of radius are one of larger.
Specifically, circular interpolation is become into small linearity interpolation when the first, second machining locus is all arc track,
The quantity of continuous linear section influences whether the machining accuracy of arc track, and straightway more multi-processing precision is higher, and straightway is fewer
Machining accuracy is lower, thus when the arc length of two arc tracks and radius there are it is different when, the quantity of segmentation influences whether to process
Precision, the precedence of segmentation influences whether executing efficiency:
For example, two circular arc arc length are identical, radius is different, if the small number of straight segments of segmentation is identical, radius is big
Circular approximation degree is necessarily worse than the approximation ratio of the small circular arc of radius, if the small circular arc of pair radius is first split, having can
The circular arc that radius can be caused small can satisfy the requirement of machining accuracy, and the big circular arc of radius is not able to satisfy wanting for machining accuracy
It asks.
For another example two circular arc arc length are different, radius is identical, if the small number of straight segments of segmentation is identical, arc length is big
Circular approximation degree be necessarily worse than the approximation ratio of the small circular arc of arc length.In this way, if circular arc first small to arc length first carries out
Segmentation, it is possible to which the circular arc for causing arc length small can satisfy the requirement of machining accuracy, and the big circular arc of radius is not able to satisfy processing
The requirement of precision.
To sum up, it when the synchronous processing track of upper and lower surface is arc track, requires to go to approach with small straightway, arc
Long alf_len and radius r is the factor for influencing small straightway dividing number and circular approximation degree namely machining accuracy, therefore
Should be using the size of arc length and radius product as the foundation for determining small straightway dividing number, that is to say, that first to arc length with
The biggish circular arc of the product of radius is split, and after determining dividing number, then is multiplied to arc length and radius according to the dividing number
The lesser circular arc of product is split, as long as first guaranteeing the machining accuracy of the biggish circular arc of product of arc length and radius, arc in this way
The long machining accuracy with the lesser circular arc of product of radius is just necessarily guaranteed.
In the above-described embodiment, it is preferred that first group of continuous linear section and second group of continuous linear Duan Jun
For continuous isometric straightway.
Specifically, using two groups continuously isometric straightway two arc tracks are approached, reason for this is that
Can most accurate simulation arc track, in addition, isometric straightway is also than non-when calculating the origin coordinates point of each straightway
Isometric straightway wants regular and convenient more, can greatly simplify calculating process, substantially reduce programming difficulty, improve program and hold
Capable efficiency.
In the above-described embodiment, it is preferred that the predetermined quantity depends on first machining locus and described second
Arc length and one of the larger total length of the product of radius, arc radius and setting approaches franchise in machining locus.
Specifically, when machining locus to be synchronized is all arc track, for approaching the continuous linear section of arc track
Dividing number calculation and machining locus to be synchronized when being respectively arc track and straight path for approaching circular arc rail
The calculation of the dividing number of the continuous linear section of mark be it is identical, be specifically referred to formula (1)-(2), herein not
It repeats again.
In the above-described embodiment, it is preferred that according to the segmentation obtained each circular curve of the first machining locus
Arc length and first machining locus beginning and end coordinate, calculate each in first group of continuous linear section
Feeding increment of the straightway in the corresponding first, second linkage axis direction of the first surface, and will be described first, second
Feeding increment synthesis in linkage axis direction is converted to the first, second universal driving shaft actual motion increment；According to segmentation
The arc length of the obtained each circular curve of second machining locus and the beginning and end coordinate of second machining locus,
Each straightway in second group of continuous linear section is calculated in the corresponding third of the second surface, four-axle linkage axis direction
On feeding increment, and by the third, four-axle linkage axis direction feeding increment synthesis be converted to the third, the 4th
Universal driving shaft actual motion increment.
Specifically, this preferred embodiment is to be directed to the case where two machining locus to be synchronized are all arc track, each
Arc track is divided each straightway in obtained continuous linear section in the calculation of the feeding increment of linkage axis direction
With two machining locus to be synchronized be arc track and straight path when calculation it is identical, referring specifically to above-mentioned formula
(3)-(14)。
In the above-described embodiment, it is preferred that will add for first machining locus of arc track and/or described second
Work track is divided into one group of the predetermined quantity continuously isometric circular curve, and by the head and the tail of each circular curve two
Endpoint line obtains one group of continuous linear section, wherein the arc track is approached in the track that one group of continuous linear section is formed.
Specifically, by arc track be divided into one group continuously isometric straightway there are many ways to, such as: equal arc method, equal error
Method, etc. the linear fit methods such as segment methods, equidistant method, inventor can make to calculate using equal arc method by a large amount of test discoveries
Process is simpler, stable, effective, therefore preferential recommendation carries out linear fit to arc track using above-mentioned equal arc method.
Second embodiment of the present invention additionally provides a kind of Line Cutting Machine Control device that digital control system is cut based on gold
200, as shown in fig. 6, including the module being linked in sequence as follows:
Track determining module 201, for determine be located at workpiece first surface the first machining locus and second surface the
Two machining locus, wherein first machining locus and second track are machining locus to be synchronized, and described first processes
Track is arc track；
Line segmentation module 202, for first machining locus and second machining locus to be split respectively,
To obtain first with predetermined quantity group continuous linear section corresponding with first machining locus and add with described second
The corresponding second group of continuous linear section with the predetermined quantity in work track；
Interpolation module 203 is used in first machining locus and the respective machine direction of the second machining locus,
Successively simultaneously in first group of continuous linear section and second group of continuous linear section described in interpolation aligned identical position straightway；
Control module 204, for based on the interpolation as a result, the wire electrode of control wire cutting machine carries out the workpiece
Processing.
It is not difficult to find that the present embodiment is Installation practice corresponding with embodiment 1, present embodiment can be with embodiment 1
It works in coordination implementation.The relevant technical details mentioned in embodiment 1 are still effective in embodiment 1, in order to reduce repetition, here
It repeats no more.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in embodiment 1.
It is noted that each module involved in present embodiment is the logic realized using computer program
Module.In addition, in order to protrude innovative part of the invention, in present embodiment there is no by with solve skill proposed by the invention
The less close modular unit of art issue concerns introduces, but this does not indicate that there is no other module lists in present embodiment
Member.
Third embodiment of the present invention additionally provides a kind of Line Cutting Machine Control equipment 300, as shown in fig. 7, the line is cut
Cutting mill control system includes:
At least one processor 301；And
Memory 302, the memory 302 store the executable instruction of at least one described processor 301, described instruction
Make the Line Cutting Machine Control equipment 300 for realizing above-mentioned embodiment party when being executed by least one described processor 301
The Line Cutting Machine Control method of digital control system is cut described in formula based on gold.
Above-mentioned memory 302 is used as a kind of non-volatile computer readable storage medium storing program for executing, can be used for storing non-volatile soft
Part program, non-volatile computer executable program and module, as the wire cutting in the embodiment of the present invention controls program.Place
Non-volatile software program, instruction and the module of device 301 in the memory 302 by operation storage are managed, is cut thereby executing line
Cutting mill controls the various function application and data processing of equipment 300, i.e., cuts numerical control based on gold in realization above embodiment
The Line Cutting Machine Control method of system.
Memory 302 may include storing program area and storage data area, wherein storing program area can store operation system
Application program required for system, at least one function；Storage data area can store the number of the prompting item of the application program of acquisition
Measure information etc..In addition, memory 302 may include high-speed random access memory, it can also include nonvolatile memory, example
Such as at least one disk memory, flush memory device or other non-volatile solid state memory parts.In some embodiments, it deposits
Optional reservoir 302 includes the memory remotely located relative to processor 301, these remote memories can pass through network connection
The processing unit operated to list items.The example of above-mentioned network includes but is not limited to internet, intranet, local area network, shifting
Dynamic communication network and combinations thereof.
Method provided by embodiments of the present invention can be performed in above-mentioned Line Cutting Machine Control equipment 300, has the side of execution
The corresponding functional module of method and beneficial effect.The not technical detail of detailed description in the present embodiment, reference can be made to the reality of the application
Apply method provided by mode.
The computer that embodiment further provides a kind of with nonvolatile memory form of of the invention the 4th, which stores, to be situated between
Matter, such as electrically erasable programmable read-only memory (EEPROM), flash memory and hard drive are stored with the executable finger of computer
It enables.Computer executable instructions when being executed by Line Cutting Machine Control System, for realizing described in above embodiment based on
Gold cuts the Line Cutting Machine Control method of digital control system.
Those skilled in the art of the present technique are appreciated that the present invention includes being related to for executing in heretofore described operation
One or more equipment.These equipment can specially design and manufacture for required purpose, or also may include general
Known device in computer.These equipment have the computer program being stored in it, these computer programs are selectively
Activation or reconstruct.Such computer program can be stored in equipment (for example, computer) readable medium or be stored in
It e-command and is coupled in any kind of medium of bus respectively suitable for storage, the computer-readable medium includes but not
Be limited to any kind of disk (including floppy disk, hard disk, CD, CD-ROM and magneto-optic disk), ROM (Read-Only Memory, only
Read memory), RAM (Random Access Memory, immediately memory), EPROM (Erasable Programmable
Read-Only Memory, Erarable Programmable Read only Memory), EEPROM (Electrically Erasable
Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or light card
Piece.It is, readable medium includes by equipment (for example, computer) with any Jie for the form storage or transmission information that can be read
Matter.
Those skilled in the art of the present technique be appreciated that can be realized with computer program instructions these structure charts and/or
The combination of each frame and these structure charts and/or the frame in block diagram and/or flow graph in block diagram and/or flow graph.This technology neck
Field technique personnel be appreciated that these computer program instructions can be supplied to general purpose computer, special purpose computer or other
The processor of programmable data processing method is realized, to pass through the processing of computer or other programmable data processing methods
The scheme specified in frame or multiple frames of the device to execute structure chart and/or block diagram and/or flow graph disclosed in this invention.
Those skilled in the art of the present technique have been appreciated that in the present invention the various operations crossed by discussion, method, in process
Steps, measures, and schemes can be replaced, changed, combined or be deleted.Further, each with having been crossed by discussion in the present invention
Kind of operation, method, other steps, measures, and schemes in process may also be alternated, changed, rearranged, decomposed, combined or deleted.
Further, in the prior art to have and the step in various operations, method disclosed in the present invention, process, measure, scheme
It may also be alternated, changed, rearranged, decomposed, combined or deleted.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (24)
1. a kind of Line Cutting Machine Control method for cutting digital control system based on gold, it is characterised in that include the following steps:
The second machining locus of the first machining locus and second surface that are located at workpiece first surface is determined, wherein described first adds
Work track and second track are machining locus to be synchronized, and first machining locus is arc track；
First machining locus and second machining locus are split respectively, to obtain and first machining locus
Corresponding first with predetermined quantity group continuous linear section and it is corresponding with second machining locus have it is described pre-
Second group of continuous linear section of fixed number amount；
On first machining locus and the respective machine direction of the second machining locus, successively first described in interpolation simultaneously
The straightway of aligned identical position in group continuous linear section and second group of continuous linear section；
It is based on the interpolation as a result, control wire cutting machine wire electrode the workpiece is processed.
2. the Line Cutting Machine Control method according to claim 1 for cutting digital control system based on gold, which is characterized in that when described
When second machining locus is straight path, the predetermined quantity depends on first machining locus.
3. according to claim 2 cut the Line Cutting Machine Control method of digital control system based on gold, it is characterised in that: described the
One group of continuous linear section and second group of continuous linear section are continuous isometric straightway.
4. the Line Cutting Machine Control method according to claim 3 for cutting digital control system based on gold, which is characterized in that described pre-
Fixed number amount approaches franchise depending on the total length of the arc track, arc radius and setting.
5. the Line Cutting Machine Control method of digital control system is cut based on gold according to any one in claim 3-4,
It is characterized in that, further includes:
According to the arc length and first machining locus for dividing the obtained each circular curve of the first machining locus
Beginning and end coordinate calculates each straightway in first group of continuous linear section in the first surface corresponding first
Feeding increment on universal driving shaft and the second linkage axis direction；
Feeding increment synthesis on first universal driving shaft and the second linkage axis direction is converted into each universal driving shaft actual motion
Increment.
6. the Line Cutting Machine Control method of digital control system is cut based on gold according to any one in claim 3-4,
It is characterized in that, further includes:
According to the total length of second machining locus, the dividing number of second machining locus and the second processing rail
The beginning and end coordinate of mark calculates in second group of continuous linear section that second machining locus is divided into per always
Feeding increment of the line segment on the corresponding third universal driving shaft in surface where second machining locus and four-axle linkage axis direction,
Described in second group of continuous linear section be continuous isometric straightway；
Feeding increment synthesis on third universal driving shaft and four-axle linkage axis direction is converted into each universal driving shaft actual motion increment.
7. the Line Cutting Machine Control method according to claim 1 for cutting digital control system based on gold, which is characterized in that
When second machining locus is arc track, the predetermined quantity depends on first machining locus and described the
Arc length and the product of radius are one of larger in two machining locus.
8. according to claim 7 cut the Line Cutting Machine Control method of digital control system based on gold, it is characterised in that: described the
One group of continuous linear section and second group of continuous linear section are continuous isometric straightway.
9. the Line Cutting Machine Control method according to claim 8 for cutting digital control system based on gold, which is characterized in that described pre-
It is one of larger that fixed number amount depends on arc length and the product of radius in first machining locus and second machining locus
Total length, arc radius and setting approach franchise.
10. the Line Cutting Machine Control method of digital control system is cut based on gold according to any one in claim 8-9,
It is characterized in that, further includes:
According to the arc length and first machining locus for dividing the obtained each circular curve of the first machining locus
Beginning and end coordinate calculates each straightway in first group of continuous linear section in the first surface corresponding the
One, the feeding increment in the second linkage axis direction, and the feeding increment synthesis in the first, second linkage axis direction is turned
It is changed to the first, second universal driving shaft actual motion increment；
According to the arc length and second machining locus for dividing the obtained each circular curve of the second machining locus
Beginning and end coordinate calculates each straightway in second group of continuous linear section in the second surface corresponding the
Three, the feeding increment in four-axle linkage axis direction, and the feeding increment synthesis in the third, four-axle linkage axis direction is turned
It is changed to the third, tetrad moving axis actual motion increment.
11. Line Cutting Machine Control method described in -10 any one according to claim 1, which is characterized in that
The one of the predetermined quantity will be divided into for first machining locus of arc track and/or second machining locus
The continuous isometric circular curve of group, and two endpoint lines of the head and the tail of each circular curve are obtained into one group of continuous linear section,
The arc track is approached in the track that wherein one group of continuous linear section is formed.
12. a kind of Line Cutting Machine Control device for cutting digital control system based on gold, it is characterised in that including following module:
Track determining module, for determining the second processing rail of the first machining locus and second surface that are located at workpiece first surface
Mark, wherein first machining locus and second track are machining locus to be synchronized, and first machining locus is circle
Arc track；
Line segmentation module, for being respectively split first machining locus and second machining locus, to obtain
First with predetermined quantity group continuous linear section corresponding with first machining locus and with second machining locus
Corresponding second group of continuous linear section with the predetermined quantity；
Interpolation module is used in first machining locus and the respective machine direction of the second machining locus, successively together
When interpolation described in first group of continuous linear section and second group of continuous linear section aligned identical position straightway；
Control module, for based on the interpolation as a result, the wire electrode of control wire cutting machine processes the workpiece.
13. the Line Cutting Machine Control device according to claim 12 for cutting digital control system based on gold, which is characterized in that work as institute
State the second machining locus be straight path when, the predetermined quantity depend on first machining locus.
14. the Line Cutting Machine Control device according to claim 13 for cutting digital control system based on gold, it is characterised in that: described
First group of continuous linear section and second group of continuous linear section are continuous isometric straightway.
15. the Line Cutting Machine Control device according to claim 14 for cutting digital control system based on gold, which is characterized in that described
Predetermined quantity approaches franchise depending on the total length of the arc track, arc radius and setting.
16. cut the Line Cutting Machine Control device of digital control system described in any one in 4-15 based on gold according to claim 1,
It is characterized in that, further including the first increment composite calulation module:
For according to the arc length and the first processing rail for dividing the obtained each circular curve of the first machining locus
The beginning and end coordinate of mark, each straightway calculated in first group of continuous linear section are corresponding in the first surface
Feeding increment on first universal driving shaft and the second linkage axis direction；
Feeding increment synthesis on first universal driving shaft and the second linkage axis direction is converted into each universal driving shaft actual motion
Increment.
17. cut the Line Cutting Machine Control device of digital control system described in any one in 4-15 based on gold according to claim 1,
It is characterized in that, further including the second increment composite calulation module:
For being added according to the total length of second machining locus, the dividing number of second machining locus and described second
The beginning and end coordinate of work track calculates every in second group of continuous linear section that second machining locus is divided into
Feeding of one straightway on the corresponding third universal driving shaft in surface where second machining locus and four-axle linkage axis direction increases
Amount, wherein second group of continuous linear section is continuous isometric straightway；
Feeding increment synthesis on third universal driving shaft and four-axle linkage axis direction is converted into each universal driving shaft actual motion increment.
18. the Line Cutting Machine Control device according to claim 12 for cutting digital control system based on gold, it is characterised in that: work as institute
State the second machining locus be arc track when, the predetermined quantity depend on first machining locus and it is described second processing rail
Arc length and the product of radius are one of larger in mark.
19. the Line Cutting Machine Control device according to claim 18 for cutting digital control system based on gold, it is characterised in that: described
First group of continuous linear section and second group of continuous linear section are continuous isometric straightway.
20. the Line Cutting Machine Control device according to claim 19 for cutting digital control system based on gold, which is characterized in that described
Predetermined quantity is one of larger depending on arc length in first machining locus and second machining locus and the product of radius
Total length, arc radius and setting approach franchise.
21. cut the Line Cutting Machine Control device of digital control system described in any one in 9-20 based on gold according to claim 1,
It is characterized in that, further including
Third increment composite calulation module, for according to the arc for dividing the obtained each circular curve of the first machining locus
The beginning and end coordinate of long and described first machining locus, calculates each straight line in first group of continuous linear section
Feeding increment of the section in the corresponding first, second linkage axis direction of the first surface, and will be in first, second linkage
Feeding increment synthesis in axis direction is converted to the first, second universal driving shaft actual motion increment；
4th increment composite calulation module, for according to the arc for dividing the obtained each circular curve of the second machining locus
The beginning and end coordinate of long and described second machining locus, calculates each straight line in second group of continuous linear section
Feeding increment of the section in the corresponding third of the second surface, four-axle linkage axis direction, and will be in the third, four-axle linkage
Feeding increment synthesis in axis direction is converted to the third, tetrad moving axis actual motion increment.
22. cut the Line Cutting Machine Control device of digital control system described in 2-21 any one based on gold according to claim 1, it is special
Sign is that the line segmentation module will divide for first machining locus of arc track and/or second machining locus
It is segmented into one group of the predetermined quantity continuously isometric circular curve, and by two endpoint lines of the head and the tail of each circular curve
One group of continuous linear section is obtained, wherein the arc track is approached in the track that one group of continuous linear section is formed.
23. a kind of Line Cutting Machine Control equipment characterized by comprising
At least one processor；And
Memory, the memory store the executable instruction of at least one described processor, described instruction by it is described at least
One processor makes the Line Cutting Machine Control equipment for realizing described in any one of claim 1-11 when executing
The Line Cutting Machine Control method of digital control system is cut based on gold.
24. a kind of computer readable storage medium is stored with computer executable instructions, the computer executable instructions are in quilt
When at least one processor executes, so that described device executes method described in any one of -11 according to claim 1.
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| CN201711135459.2A CN109799779B (en) | 2017-11-16 | 2017-11-16 | Wire cutting machine control method and device based on golden cutting numerical control system |
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