CN101468375A - Regulation method of press-bending and molding mold - Google Patents
Regulation method of press-bending and molding mold Download PDFInfo
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- CN101468375A CN101468375A CNA2007103058466A CN200710305846A CN101468375A CN 101468375 A CN101468375 A CN 101468375A CN A2007103058466 A CNA2007103058466 A CN A2007103058466A CN 200710305846 A CN200710305846 A CN 200710305846A CN 101468375 A CN101468375 A CN 101468375A
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Abstract
The invention discloses a method for adjusting a bending and molding mould. The mould comprises a concave mould and a convex mould; the convex mould is provided with a convex round angle; and the adjusting method comprises: measuring super-difference value produced by mould molding, according to the measured super-difference value, calculating curvature radius needed for correcting the super-difference value by the convex round angle of the convex mould, and adjusting the convex round angle of the convex mould so as to reach the needed curvature radius. Through the adjustment of the convex round angle of the convex mould, the method for adjusting the bending and molding mould adjusts the super-difference of boundary dimensions/flange faces of various bending parts, thereby substantially reducing the workload of adjustment and reducing materials, adjustment time and cost.
Description
Technical field
The present invention relates in particular to a kind of overproof regulation method of press-bending and molding mold that produces when mould bends that is used to adjust about the mould molding technical field.
Background technology
At present, the mould molding technology is ripe day by day, and various components of machine all can produce by the mould molding technology.For example, automobile beam parts adopt mould to come moulding usually, and common automobile beam parts have two kinds: can't blue face beam and flanged beam.Can't blue face beam " U " type beam 11 as shown in Figure 1, flanged beam as shown in Figure 2 " beam 12, it comprises flange face 13." U " type beam 11 the moulding process scheme be: blanking and punching, press-bending.The process program of " beam is a (see figure 3): blanking and punching, once press-bending, secondary bend, and when once bending plate blank are pressed into " U " type, and secondary bends and again " U " type is pressed into ".When the position of once bending is launched inaccurate, as launching to produce error by hand, add owing to mold stroke or product reason such as negative angle again, full progressive die mouth can't be stocky on earth when secondary bent, and is last, as shown in Figure 3, the gap error D that the flange face 13 (shown in the dotted line) of actual product and the flange face 14 of theoretical product will exist, general tolerance require the gap to be ± 0.5mm, and the product out-of-size requires to be overproof, the actual product gap shows as bigger overproof often about ± 1mm.As shown in Figure 3, if the flange face of actual product 13 is higher than the flange face 14 of theoretical product, be called just overproof.As shown in Figure 4, if the flange face of actual product 13 is lower than the flange face 14 of theoretical product, be called negative overproof.
These beam parts adopt the bending die moulding usually, and this mould comprises die and punch.Overproof for reducing, general die regulating method is the sidewall locations of direct change mould when once bending.When the product appearance was just overproof, press-bending die madial wall position was moved inward, promptly needed toward this sidewall repair welding the reprocessing punch.When the product appearance is negative overproof, the lateral wall position of press-bending punch is moved outward, promptly need repair welding outward, the reprocessing die.Though it is overproof that the method can reduce, because sidewall area is bigger, need welding wire just many during repair welding, need long process time (working (finishing) area is effective working face of sidewall die orifice) again, this has all increased production cost.Thereby this method of adjustment workload is big, and the die debugging cycle is long, the cost height.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of regulation method of press-bending and molding mold that workload is little and cost is low of adjusting.
For solving the problems of the technologies described above, the invention provides a kind of regulation method of press-bending and molding mold, described mould comprises die and punch, described punch has the dome angle, this method of adjustment comprises the overproof value that records the mould molding generation, the dome angle of described punch is adjusted for correcting the required radius of curvature of described overproof value in the dome angle that calculates described punch according to the overproof value that records, and makes it reach required radius of curvature.
Regulation method of press-bending and molding mold provided by the invention is calculated the required corresponding radius of curvature that reaches in mould dome angle according to various overproof values, and adjust this dome angle in view of the above, thereby it is overproof and/or the flange face height is overproof to adjust the boundary dimensions of various press-bending parts.Because the area opposing sidewalls area at dome angle is little a lot, can significantly reduce to adjust workload, and material and adjustment time all can correspondingly reduce, shorten the die debugging cycle so this method can play, the effect that reduces cost.
Description of drawings
Fig. 1 be typically can't blue face beam schematic cross-section.
Fig. 2 is the schematic cross-section of typical flanged beam.
Fig. 3 forms positive excess differential intention after the moulding of flanged beam.
Fig. 4 forms negative overproof schematic diagram after the moulding of flanged beam.
Fig. 5 is the regulation method of press-bending and molding mold schematic flow sheet that first embodiment of the invention provides.
Mold forming structure schematic diagram when Fig. 6 is the once press-bending of flanged beam.
Fig. 7 is the secondary of flanged beam mold forming structure schematic diagram when bending.
Fig. 8 is that the mould structure of regulation method of press-bending and molding mold when the mould appearance is just overproof that first embodiment of the invention provides adjusted schematic diagram.
Fig. 9 is the IX part structure for amplifying schematic diagram among Fig. 8.
To be the regulation method of press-bending and molding mold that provides of first embodiment of the invention the structure for amplifying schematic diagram that the mould dome angle when negative overproof is adjusted occurs at mould to Figure 10.
Figure 11 can't form positive and negative overproof schematic diagram after the moulding of blue face beam.
To be the regulation method of press-bending and molding mold that provides of second embodiment of the invention the structure for amplifying schematic diagram that the mould dome angle when just overproof is adjusted occurs at mould to Figure 12.
To be the regulation method of press-bending and molding mold that provides of second embodiment of the invention the structure for amplifying schematic diagram that the mould dome angle when negative overproof is adjusted occurs at mould to Figure 13.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 5, be the regulation method of press-bending and molding mold flow chart of this first embodiment.Bending and forming mould comprises die and punch, and described punch has the dome angle, and this method of adjustment may further comprise the steps: (1) records the overproof value that mould molding produces; (2) calculate the dome angle of punch for correcting the required radius of curvature of overproof value according to the overproof value that records; (3) the dome angle of adjustment punch makes it reach required radius of curvature.First embodiment of the invention adopts the demonstration that is shaped to of flanged beam, with the concrete enforcement of explanation method of adjustment, before this, introduces the forming process of flanged beam earlier.
See also Fig. 6 and 7, be the bending die molding structure schematic diagram of flanged beam.As shown in Figure 6, one time bending die comprises the die 30 and first punch 20, and die 30 comprises two submodule portions 31 and binder block 32.Usually earlier plate blank is positioned to move downward by die 30 then on first punch 20, extrudes intermediate, promptly " U " type beam 21.Again " U " type beam 21 is put into the secondary bending die, as shown in Figure 7, this secondary bending die comprises the die 30 and second punch 40.As shown in Figure 8, second punch 40 has the dome angle 42 that forms the secondary bending place.During the secondary bent into shape, " U " type beam 21 is positioned to move downward by die 30 on second punch 40, extrudes " beam 22.
For step (1), present embodiment might as well suppose that the mould molding product that records by shown in Fig. 6 and 7 forms overproof, and overproof value is as shown in Figure 3 just overproof, and records overproof value D1 and be+1.2 millimeters, and promptly the height fall of actual product and theoretical product is 1.2 millimeters.
After obtaining overproof value D1 and being, carry out step (2), the dome angle 42 that calculates second punch 40 according to 1.2 millimeters overproof values is for correcting the required radius of curvature of overproof value.As shown in Figure 9, this dome angle 42 is between flex point A and B.For ease of comparing before and after 42 adjustment of dome angle and calculating, preferably, the dome angle 42 of adjusting front and back is limited between an A and the B.Because the height fall of actual product and theoretical product can replenish by the arc length that changes the dome angle 42 between AB, as shown in Figure 3, the actual product in the present embodiment is higher than theoretical product, therefore needs to shorten the arc length at the dome angle 42 between AB.As shown in Figure 9, make that dome angle 42 is containing to meet the dome angle 44 (among the figure shown in the dotted line) of demand with formation, the arc length at dome angle 44 is shorter than the arc length at dome angle 42, and roughly differs 1.2 millimeters.Therefore, only need measure the arc length at unjustified dome angle 42, can calculate the required arc length in dome angle 44, thereby can obtain the radius of curvature at dome angle 44.
After calculating the radius of curvature at dome angle 44 of one-tenth to be adjusted, can adjust, make it reach required radius of curvature, form dome angle 44 original dome angle 42.Being adjusted into of dome angle 42 processed dome angle 42, and for example the described dome of polishing angle 42 makes its toe-in earlier, by the containing dome angle 42 of digital control processing, forms the dome angle 44 with required radius of curvature.
After the process said method is adjusted mould, when carrying out the secondary press-bending again, because dome angle 44 arc length are shorter than original 42 arc length, thereby make the flange face of actual " beam 22 pull to theoretic flange face position, thereby avoid just overproof appearance.
See also Figure 10, the dome angle adjustment schematic diagram of the overproof value of measuring for the step (1) of method of adjustment during for as shown in Figure 4 negative overproof.When for example negative overproof value was-0.8 millimeter, promptly the height fall of actual product and theoretical product was 0.8 millimeter.Carry out calculation procedure (2) then equally, the dome angle 42 that calculates second punch 40 according to 0.8 millimeter overproof value is for correcting the required radius of curvature of overproof value.Since negative when overproof actual product be lower than theoretical product, need to increase the arc length at the dome angle 42 between AB this moment, as shown in figure 10, dome angle 42 expanded outwardly, and meets the dome angle 46 (among the figure shown in the dotted line) of demand with formation.The arc length at dome angle 46 is greater than the arc length at dome angle 42, and roughly differs 0.8 millimeter.Therefore, only need measure the arc length at unjustified dome angle 42, can calculate the required arc length in adjusted dome angle 46, thereby can obtain the radius of curvature at adjusted dome angle 46.
Owing to need expand outwardly dome angle 42, the step (3) of negative overproof adjustment also is different from the step (3) of the negative overproof adjustment in front to the adjustment at the dome angle 42 of second punch 40.Dome angle 42 adjustment this moment promptly expands outwardly dome angle 42 and comprises repair welding is carried out at described dome angle 42, and the dome angle by the digital control processing repair welding forms required dome angle 46 at last to having required radius of curvature again.Expand outwardly dome angle 42 and also be included in the method that dome angle 42 forms coating, be not limited to the described repair welding of present embodiment.
Under the situation of the negative overproof value of this appearance, after mould is adjusted through said method, when carrying out the secondary press-bending again, because second punch, 40 adjusted dome angles, 46 arc length are greater than the arc length at original dome angle 42, thereby make the flange face of actual " beam 22 upwards pull to theoretic flange face position, thereby avoid negative overproof appearance.
See also Figure 11,12 and 13, Figure 11 is the overproof schematic diagram of " U " type beam, and Figure 12 and 13 is a structural representation before and after mould dome angle is adjusted in the regulation method of press-bending and molding mold of second embodiment of the invention.The regulation method of press-bending and molding mold of second embodiment is used for the moulding adjustment of " U " type beam, and therefore the once pressure that only need carry out as shown in Figure 6 becomes process.When carrying out moulding before first punch 20 is not adjusted, can occur overproof.As shown in figure 11, the sidewall edge height of the theoretical product of " U " type beam is the L0 level, when the sidewall edge height of actual product during in the L1 level, is called just overproof; When the sidewall edge height of actual product during, be called negative overproof in the L2 level.
The regulation method of press-bending and molding mold of second embodiment comprises and the essentially identical step of the regulation method of press-bending and molding mold of first embodiment that difference is that the object of adjusting is first punch, 20 dome angles 23.When appearance is just overproof, as shown in figure 12, identical with the front to the method for adjustment at second punch, 40 dome angles 42, make dome angle 23 toe-ins of first punch 20 between an AB, digital control processing again or the direct numerical control processing dome angle 23 of promptly polishing, to increase its radius of curvature, promptly obtain the less dome angle 24 of arc length.Equally, when appearance is negative overproof, as shown in figure 13, first punch, 20 dome angles 23 are expanded outwardly,,, become the bigger dome angle 26 of arc length to reduce its radius of curvature promptly by repair welding and digital control processing dome angle 23.So, when once bending, by dome angle 23 is adjusted accordingly, the height of the product sidewall edge of actual moulding can be retracted the sidewall edge height of theoretical product, eliminate off-gage phenomenon.
Should be understood that the method for adjustment to first punch 20 among second embodiment can be applicable among first embodiment, promptly before the dome angle 42 of second punch 40 is adjusted, earlier the dome angle 23 of first punch 20 is adjusted.At this moment, the height of the sidewall of " U " type beam that produces when once bending is passing through the edge length that is transformed into " beam flange face 13 after secondary bends.Therefore, in the forming process of " beam, earlier the result that adjusts of the dome angle 23 of first punch 20 when once bending carries out overproof adjustment with the flange face boundary dimensions of " beam.At this moment, once bend the dome angle 23 of first punch 20 adjusted before, measured and with serve as the overproof of overproof value according to dome angle 23 radius of curvature that the calculate boundary dimensions that corresponds to final " beam flange face 13.
When the overproof of boundary dimensions appears in " beam simultaneously, can be described as first overproofly, and the flange face height of secondary when bending is overproof, can be described as second overproof, can occur accumulating overproof this moment, can adopt the method at the adjustment first punch dome angle among second embodiment when overproof correcting first.Correcting second when overproof, because accumulation is overproof, when calculating the radius of curvature at the second punch dome angle, can not be in first embodiment only with the overproof value of flange face height (promptly just the second overproof value) as the calculating benchmark, and need add up as calculating benchmark the first overproof value is directly relative with the second overproof value, the symbol that refers to the overproof value of reservation that wherein directly adds up relatively carries out addition, if first, the second overproof value is respectively Δ D1 and Δ D2, when then the punch dome angle that secondary is bent was adjusted, the overproof value of the benchmark of Calculation of curvature radius was Δ D1+ Δ D2.For example, when the first overproof value that produces of once bending is+0.8 millimeter, the second overproof value that the secondary press-bending produces is+1.2 millimeters, then when the first punch dome angle of once bending is adjusted, the overproof value of benchmark of calculating the first punch dome angle radius of curvature is+0.8 millimeter, and when the second punch dome angle of secondary press-bending is adjusted, the overproof value of benchmark of calculating the second punch dome angle radius of curvature is (+0.8 millimeter)+(+1.2 millimeters), promptly calculates the required radius of curvature in the second punch dome angle with 2 millimeters overproof value.Again for example, when the first overproof value that produces of once bending is-0.8 millimeter, the second overproof value that the secondary press-bending produces is+1.2 millimeters, and then when the first punch dome angle of once bending was adjusted, the overproof value of benchmark of calculating the first punch dome angle radius of curvature was-0.8 millimeter.And when the second punch dome angle of secondary press-bending was adjusted, the overproof value of the benchmark of Calculation of curvature radius was (0.8 millimeter)+(+1.2 millimeters), promptly calculates the required radius of curvature in the second punch dome angle with 0.4 millimeter overproof value.The final like this boundary dimensions that can adjust part simultaneously is overproof and the flange face height is overproof.
Can find out that by top embodiment pressure of the present invention becomes pattern tool method of adjustment and can be applicable to variously have the bending parts, and is not limited to the involved beam-like part of embodiment.Should be noted in the discussion above that after the mould adjustment, also should be noted that the operating position of checking product, the dome angle of change back mould can not influence the use of product.
In various embodiments of the present invention, regulation method of press-bending and molding mold is calculated the required corresponding radius of curvature that reaches in mould dome angle according to various overproof values, and adjust this dome angle in view of the above, thereby it is overproof and/or the flange face height is overproof to adjust the boundary dimensions of various press-bending parts.Because the relative full annular sidewall area of area at the dome angle of the whole periphery of mould is little a lot, can significantly reduce to adjust workload, and material and adjustment time all can correspondingly reduce, shorten the die debugging cycle so this method can play, the effect that reduces cost.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of regulation method of press-bending and molding mold, described mould comprises die and punch, described punch has the dome angle, it is characterized in that, this method of adjustment comprises the overproof value that records the mould molding generation, the dome angle of described punch is adjusted for correcting the required radius of curvature of described overproof value in the dome angle that calculates described punch according to the overproof value that records, and makes it reach required radius of curvature.
2, regulation method of press-bending and molding mold as claimed in claim 1, it is characterized in that, when recording described overproof value and be positive excess difference, the adjustment at the dome angle of described punch comprises the dome angle that processes described punch, makes to restrain in the described dome angle to increase its radius of curvature to required radius of curvature; When recording described overproof value is when bearing overproof value, and the adjustment at described punch dome angle comprises that the dome angle that expands outwardly described punch is to reduce its radius of curvature to required radius of curvature.
3, regulation method of press-bending and molding mold as claimed in claim 2 is characterized in that, the processing of described punch comprises that the described dome of polishing angle makes its toe-in, arrives required radius of curvature by the dome angle that digital control processing is containing.
4, regulation method of press-bending and molding mold as claimed in claim 2 is characterized in that, when overproof value was positive excess difference, the adjustment at the dome angle of described punch comprises directly carried out digital control processing to described dome angle, so that convergence in the described dome angle.
5, regulation method of press-bending and molding mold as claimed in claim 2 is characterized in that, the expanding outwardly of the dome angle of described punch comprises carries out repair welding or form coating described dome angle, by the dome angle after the digital control processing expansion to required radius of curvature.
6, as each described regulation method of press-bending and molding mold of claim 1 to 5, it is characterized in that, described method of adjustment is to adjust producing overproof mould in the bent into shape process, the first overproof value of described overproof value in described once press-bending process, forming, described punch is first used in the described once press-bending process punch, the dome angle that calculates first punch according to the described first overproof value is for correcting the first overproof required radius of curvature, adjust the dome angle of described first punch, make it reach required radius of curvature.
7, regulation method of press-bending and molding mold as claimed in claim 6, it is characterized in that, described method of adjustment is further adjusted producing overproof mould in the secondary bent into shape process, in secondary bent into shape process, produce overproof be the second overproof value, used punch is second punch, the dome angle that calculates second punch according to the overproof value of adding up of the described first and second overproof values is for correcting the required radius of curvature of overproof value that adds up, adjust the dome angle of described second punch, make it reach required radius of curvature.
8, as each described regulation method of press-bending and molding mold of claim 1 to 5, it is characterized in that, comprise bent into shape and secondary bent into shape during the moulding of described bending and forming mould, the second overproof value of described overproof value in described secondary bent into shape, forming, described punch is the second used punch in described secondary press-bending process, the dome angle that calculates second punch according to the described second overproof value is for correcting the required radius of curvature of the described second overproof value, adjust the dome angle of described second punch, make it reach required radius of curvature.
9, regulation method of press-bending and molding mold as claimed in claim 1 is characterized in that, the adjustment to the dome angle in the described regulation method of press-bending and molding mold is limited between 2.
10, regulation method of press-bending and molding mold as claimed in claim 1 is characterized in that, the shaped article of described bending and forming mould is the beam parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007103058466A CN101468375B (en) | 2007-12-27 | 2007-12-27 | Regulation method of press-bending and molding mold |
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| CN2007103058466A CN101468375B (en) | 2007-12-27 | 2007-12-27 | Regulation method of press-bending and molding mold |
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| CN101468375A true CN101468375A (en) | 2009-07-01 |
| CN101468375B CN101468375B (en) | 2011-06-15 |
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| CN2007103058466A Expired - Fee Related CN101468375B (en) | 2007-12-27 | 2007-12-27 | Regulation method of press-bending and molding mold |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102615188A (en) * | 2012-04-04 | 2012-08-01 | 无锡欧易博阀业科技有限公司 | Secondary drawing die for cup-shaped workpiece |
| CN102861826A (en) * | 2012-09-13 | 2013-01-09 | 长春轨道客车股份有限公司 | Stretch bent mold sticking repairing method |
| CN103182420A (en) * | 2011-12-28 | 2013-07-03 | 上海大众汽车有限公司 | Manufacturing process method of beam frame piece |
| CN112613132A (en) * | 2020-11-26 | 2021-04-06 | 宝武集团马钢轨交材料科技有限公司 | Method for forming press bending die in wheel process, electronic device and storage medium |
| CN113001264A (en) * | 2021-03-16 | 2021-06-22 | 横店集团东磁股份有限公司 | Method for adjusting verticality of rolling machine shell |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19836085A1 (en) * | 1997-09-11 | 1999-04-01 | Mannesmann Ag | Procedure for manufacture of profiled track for telescopic jib of crane |
| CN2623370Y (en) * | 2003-06-12 | 2004-07-07 | 中国重型汽车集团有限公司 | Bending mould of ''U''workpieces |
| CN1954934A (en) * | 2005-10-25 | 2007-05-02 | 比亚迪股份有限公司 | Method for preventing bach after turnup |
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- 2007-12-27 CN CN2007103058466A patent/CN101468375B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103182420A (en) * | 2011-12-28 | 2013-07-03 | 上海大众汽车有限公司 | Manufacturing process method of beam frame piece |
| CN103182420B (en) * | 2011-12-28 | 2015-05-20 | 上海大众汽车有限公司 | Manufacturing process method of beam frame piece |
| CN102615188A (en) * | 2012-04-04 | 2012-08-01 | 无锡欧易博阀业科技有限公司 | Secondary drawing die for cup-shaped workpiece |
| CN102861826A (en) * | 2012-09-13 | 2013-01-09 | 长春轨道客车股份有限公司 | Stretch bent mold sticking repairing method |
| CN112613132A (en) * | 2020-11-26 | 2021-04-06 | 宝武集团马钢轨交材料科技有限公司 | Method for forming press bending die in wheel process, electronic device and storage medium |
| CN112613132B (en) * | 2020-11-26 | 2024-03-08 | 宝武集团马钢轨交材料科技有限公司 | Method for forming bending die in wheel process, electronic equipment and storage medium |
| CN113001264A (en) * | 2021-03-16 | 2021-06-22 | 横店集团东磁股份有限公司 | Method for adjusting verticality of rolling machine shell |
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| CN101468375B (en) | 2011-06-15 |
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