CN105302072A - Numerical control machine tool processing method capable of eliminating height position difference - Google Patents
Numerical control machine tool processing method capable of eliminating height position difference Download PDFInfo
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- CN105302072A CN105302072A CN201510717758.1A CN201510717758A CN105302072A CN 105302072 A CN105302072 A CN 105302072A CN 201510717758 A CN201510717758 A CN 201510717758A CN 105302072 A CN105302072 A CN 105302072A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
Abstract
A numerical control machine tool processing method capable of eliminating height position difference belongs to the technical field of numerical control processing. According to the method, by determining a sampling point of which the A-axis angle changes in the process path of a cutter, extracting the A-axis angle value corresponding to the point, obtaining a new processing coordinate system zero position according to the extracted A-axis angle value and an original processing coordinate system zero position and translating the original processing coordinate system zero to the new processing coordinate system zero position, the process path of the machine tool cutter is always related to the coordinate zero of parts only. By adopting the method, the problem that the machine tool utilization rate is low and the height of a workbench and the height of a clamp must be taken into consideration during programming and processing as the old-version Siemens numerical control system machine tool has no cutter point tracking function is solved, and the amount of programming and the management risk are reduced. The method has been popularized and applied in exterior profile processing of complex crankcase parts. The numerical control efficiency of the numerical control machine tool is improved greatly, the waiting time for the machine tool is reduced, and arrangement of workshop production tasks is facilitated.
Description
Technical field
The invention belongs to digital control processing field, be specifically related to a kind of numerically-controlled machine job operation eliminating height and position difference.
Background technology
In aviation, space flight, the industries such as boats and ships, there is the horizontal Five Axis numerical control machining center of the CNC System from Siemens of some earlier versions, these earlier versions do not support the advanced cooked modes such as TRAORI point of a knife tracking, numerical control programming needs to know difference in height (below abbreviation overturn point height) between worktable surface to flip horizontal shaft centre line and adds the height of fixture in man-hour, by these numerical value are inputted rearmounted file, after calculating, the numerical control program that machining needs could be generated, if turning height or fixture height adjust, numerical control program originally cannot use, numerical control program must be regenerated according to new height value to replace, numerical control program cannot be solidified, if the simultaneously workshop numerically-controlled machine that has multiple stage of the same type, but because working platform overturning height there are differences, during processing same part, just must work out a set of numerical control program by each lathe, waste time and energy, affect scheduling of production, follow-up management also bothers very much, if change redaction digital control system, cost is very high, and the cycle is also very long, little enterprise is ready that the cost had high input improves these old lathes, need to develop a set of programmed method for this reason, according to old digital control system, eliminate above-mentioned disadvantageous factor.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of numerically-controlled machine job operation eliminating height and position difference, make the numerical control program of CAM software programming add man-hour at the horizontal five-coordinate numerally controlled machine tool of the working platform overturning of early version Siemens System to reach, the object of situation of nipper, working platform overturning height can be met simultaneously.
Eliminate a numerically-controlled machine job operation for height and position difference, comprise the following steps:
Step 1, the zero point arranging Cutter coordinate system are in a computer positioned on Central of the parts turning axle;
Step 2, machining coordinate benchmark is set in lathe is positioned on worktable rotary central axis zero point;
Step 3, determine the sampled point that in tool sharpening track, A shaft angle degree changes, and the A shaft angle angle value corresponding to this point is extracted;
Step 4, according to extracted A shaft angle angle value and former Cutter coordinate system null position, obtain new Cutter coordinate system null position;
Step 5, former Cutter coordinate system is moved to new Cutter coordinate system null position zero point, realize machine tool machining locus only relevant for zero point with part coordinate all the time.
The method for configuring CNC System from Siemens, the horizontal five-axis machining center of worktable dual rotary.
The method CAM software simulating.
Advantage of the present invention:
The present invention proposes a kind of numerically-controlled machine job operation eliminating height and position difference, this method solve the machine tool utilization rate that legacy version CNC System from Siemens lathe brings without point of a knife following function low, programming must must consider a difficult problem for height of table, fixture height with processing, reduce programmable number and managing risk, the method is applied in the processing of the outer mold surface of complicated casing part, improve the numerical control efficiency of this type of numerically-controlled machine greatly, decrease the stand-by period of lathe, facilitate the arrangement of Workshop Production task.
Accompanying drawing explanation
Fig. 1 is tool position and Cutter coordinate system origin position relation schematic diagram after the diverse location part rotation equal angular of an embodiment of the present invention;
Fig. 2 is the numerically-controlled machine job operation process flow diagram of the elimination height and position difference of an embodiment of the present invention;
Fig. 3 is after the worktable A axle upset of an embodiment of the present invention, the calculated relationship schematic diagram of part programming coordinates reposition at zero point.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present invention is described further.
In the embodiment of the present invention, as shown in Figure 1, part is after position 1 (upset initial point) and optional position 2 rotate equal angular, in machining locus, tool position is identical relative to the position at programming coordinates zero point of part, only there are differences with Cutter coordinate system initial point G54, as long as eliminate the difference between them, just can realize numerical control program and fixture, turning height has nothing to do; In figure, 2 represent overturn points, and 3 represent programming coordinates zero point, and 4 represent Cutter coordinate system G54, and 5 represent tool sharpening positions;
In the embodiment of the present invention, eliminate the numerically-controlled machine job operation of height and position difference, the method for configuring CNC System from Siemens, the horizontal five-axis machining center of working platform overturning, as shown in Figure 2, method comprises the following steps method flow diagram:
Step 1, the zero point arranging Cutter coordinate system are in a computer positioned on Central of the parts turning axle;
In the embodiment of the present invention, ring-shaped work pieces is processed, the method to programming cutter path without particular/special requirement, only require that the programming coordinates zero point setting of part C AM programming operation is on the central axis of ring-shaped work pieces, it can be the center of circle, upper surface, the center of circle, lower surface of part, also can be the center of circle etc. of part middle part;
Step 2, machining coordinate benchmark is set in lathe is positioned on worktable rotary central axis zero point;
In the embodiment of the present invention, ensure that the rotation centerline of part overlaps with worktable rotary center line, it is main that short transverse meets processing technology, and other does not limit; The setting position of machine tooling coordinate system (G54, G55...) overlaps with the programming coordinates null position of part, on worktable rotary center line, namely on the null position of X-axis, Z axis, unrestricted in Y direction;
Step 3, determine the sampled point that in tool sharpening track, A shaft angle degree changes, and the A shaft angle angle value corresponding to this point is extracted;
In the embodiment of the present invention, five-coordinate numerally controlled machine tool A axle is the turning axle in XY plane, and B axle is the turning axle in ZX plane;
In the embodiment of the present invention, adopt UG programming software PostBuilder post processor, compared with existing programmed method 2 particular/special requirements in postpositive disposal file of the present invention is arranged:
When a, this postpositive disposal file are arranged, do not consider the difference in height of fixture height, worktable end face and overturn point, only consider the relation with part programming zero, the option relating to this content is set to zero;
B, subroutine 1 title is organized in rearmounted file, A shaft angle degree change in cutter path often being walked passed before Tool in Cutting action, by calculating, offseting, make the actual cut track of cutter on part identical with programming cutter running orbit, ensure the correctness of part processing result; Before the corresponding G code program segment in the linear movement hurdle of rearmounted file, increase the self-defining term of a subroutine 1, this subroutine pack is containing angle A change numerical parameter input item for this reason; This defined item is set to option, and only have angle A to change just increases this subroutine title program line before angle change program line, reduces unnecessary program segment and calculated amount;
Step 4, according to extracted A shaft angle angle value and former Cutter coordinate system null position, obtain new Cutter coordinate system null position;
In the embodiment of the present invention, after the upset of worktable A axle, the calculated relationship of part programming coordinates reposition at zero point as shown in Figure 3, for Siemens 840 D CNC System, the co-ordinate zero point of part is biased coordinate, and read by concrete parameter instruction, reposition is obtained by mathematical function formulae discovery; In Fig. 3,1 represents worktable end face zero point, and 2 represent overturn points, and 3 represent programming coordinates zero point, and 4 represent Cutter coordinate system G54;
Step 5, former Cutter coordinate system is moved to new Cutter coordinate system null position zero point, realize machine tool machining locus only relevant for zero point with part coordinate all the time.
In the embodiment of the present invention, by TRANS instruction, Cutter coordinate system is moved on to part programming coordinates system reposition, for the upset of part, there are positive and negative two directions, corresponding Z axis coordinate figure exists positive and negative, and programming time-division two kinds of angles are programmed;
Realize machine tool machining locus by the present invention only relevant with the co-ordinate zero point of part all the time, have nothing to do with clamping height and position.
Claims (3)
1. eliminate a numerically-controlled machine job operation for height and position difference, it is characterized in that, comprise the following steps:
Step 1, the zero point arranging Cutter coordinate system are in a computer positioned on Central of the parts turning axle;
Step 2, machining coordinate benchmark is set in lathe is positioned on worktable rotary central axis zero point;
Step 3, determine the sampled point that in tool sharpening track, A shaft angle degree changes, and the A shaft angle angle value corresponding to this point is extracted;
Step 4, according to extracted A shaft angle angle value and former Cutter coordinate system null position, obtain new Cutter coordinate system null position;
Step 5, former Cutter coordinate system is moved to new Cutter coordinate system null position zero point, realize machine tool machining locus only relevant for zero point with part coordinate all the time.
2. the numerically-controlled machine job operation of elimination height and position difference according to claim 1, is characterized in that, the method for configuring CNC System from Siemens, the horizontal five-axis machining center of worktable dual rotary.
3. the numerically-controlled machine job operation of elimination height and position difference according to claim 1, is characterized in that, the method CAM software simulating.
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Cited By (6)
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| CN106406234A (en) * | 2016-11-09 | 2017-02-15 | 哈尔滨东安发动机（集团）有限公司 | Numerical control processing method of multiple-zero-point part |
| CN110293251A (en) * | 2018-11-29 | 2019-10-01 | 东莞市睿辉机电科技有限公司 | CNC machining center improves machining accuracy technique |
| CN112051802A (en) * | 2020-09-16 | 2020-12-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Automatic numerical control machining process method for aero-engine split-structure casing type parts |
| CN112631199A (en) * | 2020-11-27 | 2021-04-09 | 上海柏楚电子科技股份有限公司 | Method and device for calibrating structural parameters of machine tool and machine tool control system |
| CN113917888A (en) * | 2021-10-27 | 2022-01-11 | 中国航发沈阳黎明航空发动机有限责任公司 | Machining precision improving method based on fixed angular orientation calibration and compensation |
| CN115194555A (en) * | 2022-07-18 | 2022-10-18 | 成都星麟数控科技有限公司 | Method for carving along with randomly placed workpiece directions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106406234A (en) * | 2016-11-09 | 2017-02-15 | 哈尔滨东安发动机（集团）有限公司 | Numerical control processing method of multiple-zero-point part |
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| CN110293251B (en) * | 2018-11-29 | 2024-03-12 | 东莞市睿辉机电科技有限公司 | CNC machining center machining precision improving technology |
| CN112051802A (en) * | 2020-09-16 | 2020-12-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Automatic numerical control machining process method for aero-engine split-structure casing type parts |
| CN112051802B (en) * | 2020-09-16 | 2021-07-06 | 中国航发沈阳黎明航空发动机有限责任公司 | Automatic numerical control machining process method for aero-engine split-structure casing type parts |
| CN112631199A (en) * | 2020-11-27 | 2021-04-09 | 上海柏楚电子科技股份有限公司 | Method and device for calibrating structural parameters of machine tool and machine tool control system |
| CN112631199B (en) * | 2020-11-27 | 2021-10-01 | 上海柏楚电子科技股份有限公司 | Method and device for calibrating structural parameters of machine tool and machine tool control system |
| CN113917888A (en) * | 2021-10-27 | 2022-01-11 | 中国航发沈阳黎明航空发动机有限责任公司 | Machining precision improving method based on fixed angular orientation calibration and compensation |
| CN113917888B (en) * | 2021-10-27 | 2023-05-23 | 中国航发沈阳黎明航空发动机有限责任公司 | Machining precision improving method based on fixed angular calibration and compensation |
| CN115194555A (en) * | 2022-07-18 | 2022-10-18 | 成都星麟数控科技有限公司 | Method for carving along with randomly placed workpiece directions |
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| CN105302072B (en) | 2018-08-07 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |