CN109822295A - The high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face - Google Patents
The high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face Download PDFInfo
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Abstract
The invention discloses the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face, solves lathe axial gap, lathe is reduced across precision caused by the multiple factors such as deceleration, cutter force, tool wear, tool path pattern, temperature and characteristic feature retains incomplete technical problem.The present invention includes the industrial analysis of type face, type face processing subregion, the filling of isolated island area and subdivision, processing subregion sequence, processing method transformation, program composition, grinding tool type face super-fine processing.The present invention, which is that the mold of completion magnesium alloy automobile panel outside plate is cold stamping shaped, provides premise, considerably reduces error and distortion caused by the problems such as deceleration, lathe axial gap are crossed in machine tooling, ensure that machining accuracy；The present invention improves machining accuracy, reduces and processes distortion caused by tool wear；The present invention realizes the high-precision of product, the manufacture of high feature fidelity is accomplished.
Description
Technical field
The present invention relates to die face processing technique fields, particularly relate to magnesium alloy automobile panel outside plate die face
High accurate numerical-control processing method.
Background technique
Automobile panel main material early period is steel plate, but the continuous pursuit along with people to High-quality automobile, newly
The automobile panel of material continues to bring out, and mainly meets the needs of high-quality and automotive light weight technology, the big cruising ability of energy-saving and emission-reduction
Demand.It can be at present magnalium plate by the automobile panel material of the two perfect combination, it is high, wear-resistant to possess light weight, intensity
The a series of advantages such as corrosion, but because its material elongation is low, the reason of material viscosity and deformation uncertainty etc.,
The outer board mold molding of the automobile panel of magnesium alloy plate is made slow progress always, and cold stamping shaped technology cannot get always key
Technological break-through and extensive use find the outer board mold molding of magnesium alloy automobile panel with the lasting propulsion of research of technique
Need super accurately machining accuracy and perfect feature preservation degree.The outer board mold of magnesium alloy automobile panel needs to surpass accurately
Processing come solve the problems, such as its spring back it is uncertain, easy to crack etc. can not accurate cold forming, but magnesium alloy automobile panel
Corresponding outside plate is high-end automobile, it is desirable that high precision, it is therefore desirable to the existing high-precision numerical control machine of continuous research experiment
Processing method
Traditional processing method is crossed over deceleration, cutter force, tool wear, tool path pattern, temperature by lathe axial gap, lathe
Degree etc. multiple factors influence, precision can not more Gao Tisheng, and feature reservation also there is degree of impairment, cause cannot achieve super
Precisely processing.If the outer board mold of magnesium alloy automobile panel will realize high-precision cold forming, it is necessary to there is height accurately to add
Work guarantees precision and feature reserving degree, comes more exact test data to be obtained, to solve magnesium close to CAE analysis with this
Easy to crack, the problem of rebound is uncertain, and precision not can guarantee of aluminum alloy plate materials cold forming process, therefore go deep into process
A kind of high accurately processing method of experimental study is to solve the formed in mould emphasis problem of magnesium alloy automobile panel outside plate.
Summary of the invention
For the deficiency in above-mentioned background technique, the present invention proposes that magnesium alloy automobile panel outside plate die face is high-precision
Quasi- numerical-control processing method, solve lathe axial gap, lathe across deceleration, cutter force, tool wear, tool path pattern,
Precision caused by the multiple factors such as temperature reduces and characteristic feature retains incomplete technical problem.
The technical scheme of the present invention is realized as follows: the high accurate numerical control of magnesium alloy automobile panel outside plate die face
Processing method, comprising the following steps: step 1: the industrial analysis of type face, step 2: type face processes subregion, and step 3: isolated island area is filled out
It fills and segments, step 4: processing subregion sequence, step 5: processing method transformation, step 6: program composition, step 7: grinding tool
Type face super-fine processing.
The step 1 includes being analyzed mold comprehensively according to die face functional areas and shape and structure, combs mold
The surface-type feature in type face: undulation angle, surface curvature, minimum R angle value, small area groove, while analyzing the function of die face
Performance Level and die region are done correspondence by grade, do comprehensive Statistical analysis for processing technology entire arrangement.
After completing the step 1, carries out type face described in step 2 and process subregion, for different undulation angles, type face
Curvature, minimum R angle value take targetedly program composition strategy, realize that lathe is balanced across deceleration small quantization and cutter step pitch
Change.
Further, the type face processes area principle are as follows: product supplements the independent subregion in face, product supplements face periphery fillet
The independent subregion in area, rounded lower-end to the independent subregion in product zone, the whole slow independent subregion of curvature plane, area is less than 0.3 square meter orphan
The independent subregion in island region；Each subregion uses individual type face program composition mode.
After completing the step 2, the filling of isolated island area and subdivision of step 3, including raised island disposal and concave are carried out
Island disposal when raised island disposal, with the shape of isolated island outermost boundary, extends to the outside that 20mm production is oval, circular isolated island
Guard plot is processed as individual region in guard plot；When concave island disposal, processing is evened up to isolated island carry out type face, is made
Lathe does straight line across processing when first machining area, then adds again since the upper fillet of concave isolated island by individual region
Work.
Further, after completing the step 3, the processing subregion sequence of the step 4 is carried out:
1) upper/lower die sequence corresponds to, i.e., the sequence of upper/lower die machining area is corresponding；
2) outside non-product type face periphery fillet is first processed；
3) all outside fillet exterior domains are secondly processed；
4) processing curvature is larger and has big corner angle or facade region；
5) isolated island region is processed；
6) processing key product type face flat zone.
The processing method transformation of the step 5 includes sloping shaft processing and contour processing, and the sloping shaft processing uses
Main shaft of numerical control machine tool angle turning function will form 25 degree or so of angle, utilize between center cutter Impact direction and die face
It is cut away from center cutter point 10-15 degree angular regions as cutting point；The contour processing uses zigzag feed side
Formula works out tool sharpening track, the per surface in guarantee type face by the way of normal direction projection to big rise and fall type face and facade
Processing step pitch is uniformly qualified in product.
The step 6 die face processing program is compiled be step 1 after the completion of, according to the square partition of step 2 and step 3
Formula, the sortord according to step 4, the processing method according to step 5 carry out processing program volume to processed die face
System pays attention to principle during programming are as follows: the processing of all models face is using same diameter, same material, identical producer's lot number
Cutter carries out upper and lower mould processing, preferably 30 diameter tool of Φ to equal dies；It reduces and is missed because being processed caused by cutter problem itself
Difference；When encountering narrow slot area, degrade to cutter diameter and other require it is constant.
Further, die face process is used with period machine tooling, in same time using two same numbers
Control lathe processes the upper and lower mould of same mold, or selects the identical time start-stop point of temperature in same equipment to identical
The upper and lower mould of mold is processed, and the night that process time generally preferably temperature tends to be steady carries out.
The die face microstoning of the step 7 be die face completely after processing is completed, utilize high precision machine tool
The micro light cut of high speed, roughing feed is carried out to mold, specifically:
1) microstoning revolving speed feeding setting, microstoning are high speed light cut, it is desirable that revolving speed 8000-12000r/min is used,
6000-8000mm/min is fed, to reach high speed light cut effect；
2) microstoning step pitch selects sloping shaft processing method between 0.3-0.5mm, while carrying out zigzag to mold facade
Feed carries out rectangular-ambulatory-plane feed to mold plane.
The invention has the benefit that
1) the reason of generation mismachining tolerance, is tested and is improved when this processing method is to study high-precision mold type face demand, from
And systematic processing method system is formd, type face caused by the mismachining tolerance of die face is lost when solving high-precision requirement
The distortion of true and characteristic feature, ensure that die face machining accuracy, make the outer board mold superhigh precision of magnesium alloy automobile panel
Processing request met, cold stamping shaped provides premise to complete the mold of magnesium alloy automobile panel outside plate；
2) by comprehensive analysis such as type surface analysis, the sequences of type face subregion, machine tooling is considerably reduced across deceleration, machine spindle
Error and distortion caused by the problems such as to gap, ensure that machining accuracy；
3) it by processing methods such as sloping shaft processing, contour processing, solves the problems, such as mismachining tolerance caused by center cutter point, mentions
Machining accuracy has been risen, has reduced and processes distortion caused by tool wear；
4) by same period machine tooling, distortion is processed caused by solving because of ambient temperature variation, to realize product
In high precision, high feature fidelity manufacture is accomplished.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in describing below to embodiment makees letter
Singly introduce, it should be apparent that, drawings in the following description are only some embodiments of the invention, skill common for this field
For art personnel, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is process flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1, the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face, as shown in Figure 1, packet
Include following steps: step 1: the industrial analysis of type face, step 2: type face processes subregion, step 3: the filling of isolated island area and subdivision, step
Rapid four: processing subregion sequence, step 5: processing method transformation, step 6: program composition, step 7: grinding tool type face is ultra-fine to be added
Work.
The step 1 includes being analyzed mold comprehensively according to die face functional areas and shape and structure, combs mold
The surface-type feature in type face: undulation angle, surface curvature, minimum R angle value, small area groove, while analyzing the function of die face
Grade.Performance Level and die region are done into the corresponding type face information to comprehensive control mold, are processing technology entire arrangement
Do comprehensive Statistical analysis.
After completing the step 1, subregion is processed according to type face described in type face industrial analysis result progress step 2,
Throttling problem and Zou Taofen are crossed over not for process lathe caused by different undulation angles, surface curvature, minimum R angle value
Equalization problem takes targetedly program composition strategy, realizes that lathe is equalized across deceleration small quantization and cutter step pitch.
Further, the type face processes area principle are as follows: product supplements the independent subregion in face, product supplements face periphery fillet
The independent subregion in area, rounded lower-end to the independent subregion in product zone, the whole slow independent subregion of curvature plane, area is less than 0.3 square meter orphan
The independent subregion in island region, area include small area type isolated island and raised isolated island less than 0.3 square meter isolated island region；Each subregion uses
Individual type face program composition mode.
After completing the step 2, the filling of isolated island area and subdivision of step 3, including raised island disposal and concave are carried out
Island disposal crosses over throttling problem with this to solve lathe.Refer to across deceleration, in the high-speed cutting during machine tooling, meets
To when turning, generation is the case where ensuring precision and decelerating turn, the situation will cause cutting force change from
And cause type face quality Light deformation.When raised island disposal, with the shape of isolated island outermost boundary, it is ellipse to extend to the outside 20mm production
Round, circular isolated island guard plot is processed as individual region in guard plot；When concave island disposal, to isolated island carry out type
Processing is evened up in face, and lathe when first machining area is made to do straight line across processing, then by list since the upper fillet of concave isolated island
Only region re-works.
Further, after completing the step 3, the processing subregion sequence of the step 4, processing subregion sequence master are carried out
It to be factors bring mismachining tolerance and the characteristic feature problem of dtmf distortion DTMF such as solution lathe axial gap, tool wear, region overlap joint.
Process subregion sequence specifically:
1) upper/lower die sequence corresponds to, i.e., the sequence of upper/lower die machining area is corresponding；
2) outside non-product type face periphery fillet is first processed；
3) all outside fillet exterior domains are secondly processed；
4) processing curvature is larger and has big corner angle or facade region；
5) isolated island region is processed；
6) processing key product type face flat zone.
In the way of the Machining Sequencing, machining area can be done into corresponding elimination, while key feature preferentially being added
Work comes out, to reduce the distortion of key feature, eliminates big plane domain because overlap joint or lathe cross over type face caused by slowing down
Distortion, to reach optimal processing effect
The processing method of the step 5 converts, mainly solve the problems, such as because cutter stress bring knife rail Wave crest and wave trough error and because
Type face is uneven bring cutter knife rail problem of non-uniform, promotes cutter life, reduces in process because cutter is ground
Damage bring processing distortion.Processing method transformation mainly includes sloping shaft processing and contour processing, the main solution of sloping shaft processing
Certainly cutter stress problem bring error and knife rail Wave crest and wave trough error, contour processing are mainly the face big rise and fall of solution type
The problem of processing step pitch width caused by and is different, precision is distorted.Contour processing uses zigzag tool path pattern, to rising
It lies prostrate relatively large face and facade and works out tool sharpening track, processing in the per surface area in guarantee type face by the way of normal direction projection
Step pitch is uniformly qualified.
Sloping shaft processing uses main shaft of numerical control machine tool angle turning function, by center cutter Impact direction and die face it
Between form 25 degree or so of angle, cut using away from center cutter point 10-15 degree angular regions as cutting point.Because often
During advising machine tooling, generally using center cutter perpendicular to processed type face, but processed in this way in processing in cutter
Heart point only has mobile linear velocity, and the linear velocity rotated does not have, and thus center cutter point is constantly in the shape for digging die face
State is under pressure larger, is easy to cause subtle impression and the slight cold-working in center cutter point region hard processed die face
Change, to make to be processed the apparent knife rail Wave crest and wave trough of die face appearance and slight processing distortion.And sloping shaft processing uses
The processing of angle formula, cutter stress point is the outside of cutter rather than center cutter, therefore all cutting points are all in process
The combination of cutter mobile linear velocity and cutter linear velocity, therefore type face drag can be greatly reduced, machining accuracy is promoted, is subtracted
Few Wave crest and wave trough distortion.Cutter life can significantly be extended simultaneously, thus guarantee that the process processed in entire type face summarizes, cutter
Abrasion loss is greatly lowered, therefore tool wear error is also greatly reduced.
The step 6 die face processing program is compiled be step 1 after the completion of, according to the square partition of step 2 and step 3
Formula, the sortord according to step 4, the processing method according to step 5 carry out processing program volume to processed die face
System.Principle is paid attention to during programming are as follows: all models face processing is using same diameter, same material, identical producer's lot number
Cutter carries out upper and lower mould processing, preferably 30 diameter tool of Φ to equal dies；It reduces and is missed because being processed caused by cutter problem itself
Difference；When encountering narrow slot area, degrade to cutter diameter and other require it is constant.
Further, die face process use with period machine tooling, be with period machine tooling for avoid because
Ambient temperature effect and the processing measure taken.Use two same numerically-controlled machine tools to the upper and lower of same mold in same time
Mould is processed, or the identical time start-stop point of selection temperature is processed in upper and lower mould of the same equipment to equal dies,
The night that process time generally preferably temperature tends to be steady carries out.
The die face microstoning of the step 7 be die face completely after processing is completed, utilize high precision machine tool
The micro light cut of high speed, roughing feed is carried out to mold, to increase substantially die face precision, reduces the table in processing type face
Surface roughness guarantees that machining accuracy and continuity, protection characteristic feature are undistorted to greatest extent.Specifically:
1) microstoning revolving speed feeding setting, microstoning are high speed light cut, it is desirable that revolving speed 8000-12000r/min is used,
6000-8000mm/min is fed, to reach high speed light cut effect；
2) microstoning step pitch selects sloping shaft processing method between 0.3-0.5mm, while carrying out zigzag to mold facade
Feed carries out rectangular-ambulatory-plane feed to mold plane.
After processing is completed using this method, type face worst error 0.07mm, surface roughness 1.6 or so meet magnalium conjunction
The requirement of the outer board mold superhigh precision of golden automobile panel.The present invention solve content of magnesium below 6%, thickness 0.4-4mm it
Between magnesium alloy plate the high accurate processing problems of molding die.
The not detailed place of the present invention is conventional technical means known in those skilled in the art.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face, it is characterised in that including following step
Rapid: step 1: the industrial analysis of type face, step 2: type face processes subregion, step 3: step 4: the filling of isolated island area and subdivision add
The sequence of work point area, step 5: processing method transformation, step 6: program composition, step 7: grinding tool type face super-fine processing.
2. the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face according to claim 1,
Be characterized in that: the step 1 includes being analyzed mold comprehensively according to die face functional areas and shape and structure, combs mould
The surface-type feature in tool type face: undulation angle, surface curvature, minimum R angle value, small area groove, while analyzing the function of die face
Energy grade, does correspondence for Performance Level and die region, does comprehensive Statistical analysis for processing technology entire arrangement.
3. the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face according to claim 1 or 2,
It is characterized by: carry out type face described in step 2 after completing the step 1 and process subregion, for different undulation angles,
Surface curvature, minimum R angle value take targetedly program composition strategy.
4. the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face according to claim 3,
Be characterized in that: the type face processes area principle are as follows: the independent subregion in product supplement face, product supplement face periphery fillet area individually divide
Area, rounded lower-end to the independent subregion in product zone, the whole slow independent subregion of curvature plane, area is less than 0.3 square meter isolated island region list
Only subregion；Each subregion uses individual type face program composition mode.
5. according to claim 1, the high accurate numerical control of 2 or 4 described in any item magnesium alloy automobile panel outside plate die faces
Processing method, it is characterised in that: after completing the step 2, carry out the filling of isolated island area and subdivision of step 3, including protrusion orphan
When raised island disposal, with the shape of isolated island outermost boundary, it is ellipse to extend to the outside 20mm production for island processing and concave island disposal
Round, circular isolated island guard plot is processed as individual region in guard plot；When concave island disposal, to isolated island carry out type
Processing is evened up in face, and lathe when first machining area is made to do straight line across processing, then by list since the upper fillet of concave isolated island
Only region re-works.
6. the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face according to claim 5,
It is characterized in that: after completing the step 3, carrying out the processing subregion sequence of the step 4:
Upper/lower die sequence corresponds to, i.e., the sequence of upper/lower die machining area is corresponding；
First processing outside non-product type face periphery fillet；
Secondly all outside fillet exterior domains of processing；
Processing curvature is larger and has big corner angle or facade region；
Process isolated island region；
Processing key product type face flat zone.
7. according to claim 1, the high precisely number of the described in any item magnesium alloy automobile panel outside plate die faces in 2,4 or 6
Control processing method, it is characterised in that: the processing method transformation of the step 5 includes sloping shaft processing and contour processing, described
Sloping shaft processing uses main shaft of numerical control machine tool angle turning function, left by forming 25 degree between center cutter Impact direction and die face
Right angle, is cut using away from center cutter point 10-15 degree angular regions as cutting point；The contour processing uses
Zigzag tool path pattern works out tool sharpening track by the way of normal direction projection to big rise and fall type face and facade.
8. the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face according to claim 7,
Be characterized in that: the step 6 die face processing program is compiled be step 1 after the completion of, according to the subregion of step 2 and step 3
Mode, the sortord according to step 4, the processing method according to step 5 carry out processing program volume to processed die face
System pays attention to principle during programming are as follows: the processing of all models face is using same diameter, same material, identical producer's lot number
Cutter carries out upper and lower mould processing to equal dies, selects 30 diameter tool of Φ；It reduces and is missed because being processed caused by cutter problem itself
Difference；When encountering narrow slot area, degrade to cutter diameter and other require it is constant.
9. according to claim 1, the described in any item magnesium alloy automobile panel outside plate die faces in 2,4,6 or 8 are high precisely
Numerical-control processing method, it is characterised in that: die face process is used with period machine tooling, uses two in same time
Same numerically-controlled machine tool processes the upper and lower mould of same mold, or the identical time start-stop point of selection temperature is in same equipment
The upper and lower mould of equal dies is processed, the night that process time selection temperature tends to be steady carries out.
10. the high accurate numerical-control processing method of magnesium alloy automobile panel outside plate die face according to claim 9,
Be characterized in that: the die face microstoning of the step 7 be die face completely after processing is completed, utilize high-precision machine
Bed carries out the micro light cut of high speed, roughing feed to mold, specifically:
1) microstoning revolving speed feeding setting, microstoning are high speed light cut, it is desirable that revolving speed 8000-12000r/min is used,
6000-8000mm/min is fed, to reach high speed light cut；
2) microstoning step pitch selects sloping shaft processing method between 0.3-0.5mm, while carrying out zigzag to mold facade
Feed carries out rectangular-ambulatory-plane feed to mold plane.
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| CN201910252914.XA CN109822295B (en) | 2019-03-29 | 2019-03-29 | High-precision numerical control machining method for mold surface of outer plate of magnesium-aluminum alloy automobile covering part |
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| CN115600487A (en) * | 2022-09-02 | 2023-01-13 | 南京天洑软件有限公司（Cn） | Method and device for designing molded surface of automobile windshield mold based on convolutional neural network |
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| CN115600487B (en) * | 2022-09-02 | 2024-02-02 | 南京天洑软件有限公司 | Method and device for designing mold surface of automobile windshield glass based on convolutional neural network |
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| CN109822295B (en) | 2021-06-25 |
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