CN103846319B - Make the method for arc sheetmetal - Google Patents
Make the method for arc sheetmetal Download PDFInfo
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- CN103846319B CN103846319B CN201210521306.2A CN201210521306A CN103846319B CN 103846319 B CN103846319 B CN 103846319B CN 201210521306 A CN201210521306 A CN 201210521306A CN 103846319 B CN103846319 B CN 103846319B
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- arc sheetmetal
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Abstract
The application relates to Machining Technology field, discloses a kind of method making arc sheetmetal, comprising: on a metallic plate, mark a plurality of bending position lines; At every bar position line place, with a bending angle, bending is carried out to described metallic plate.Due to embodiments of the invention adopt plural block is divided into metallic plate and the method for bending to obtain a polygonal part, and be approximately arc sheetmetal, so have arc more accurately.Further, the method for the embodiment of the present invention does not need special pressing equipment or volume circle equipment, also has lower-cost advantage.
Description
Technical field
The present invention relates to field of machining, particularly a kind of method making arc sheetmetal.
Background technology
Often need to make arc sheetmetal in field of machining, prior art usually utilizes process for stamping or utilizes special volume circle equipment to make arc sheetmetal.
Such as, be in the Chinese invention patent application of 94105682.1 at application number, disclose a kind of method of punching arc sheetmetal, wherein this invention is the method using cloth pad punching arc sheetmetal, and technical scheme is: the middle part between sheet-metal blank is put into the thin and uniform cloth pad of varied in thickness in thick middle two ends.When carrying out punching press, thin plate will produce excessive punching press.Like this, just qualified curved thin plate can be obtained through bounce-back again after the workpiece demoulding.
Again such as, be in the Chinese utility model patent of 201120008850.8 in the patent No., disclose a kind of volume circle equipment avoiding section bar to wear and tear, comprise base, two stands, peace two lower roll wheels and upper roll wheel, the travelling gear driving two lower roll wheels to rotate and the top roll elevating screw driving upper roll wheel lifting, described base is also provided with angle cutting mold, described upper roll wheel end is provided with the upper roll gear be in transmission connection with it, and this upper roll gear and described travelling gear are connected with a joggle.
At the manufacture field of some equipment, need the method for new making arc sheetmetal.
Summary of the invention
In view of this, the present invention proposes a kind of method making arc sheetmetal, in order to obtain arc sheetmetal more accurately, and reduce costs.
According to an aspect of the present invention, provide a kind of method making arc sheetmetal, comprising:
A metallic plate marks a plurality of bending position lines;
At every bar position line place, with a bending angle, bending is carried out to described metallic plate.
Preferably, the spacing of adjacent positioned line equals a polygonal length of side, and this polygon is connect regular polygon or circumscribed regular polygon in the circle of arc sheetmetal place.
Alternatively, using circular for arc sheetmetal inner surface place circular as described arc sheetmetal place; Or, using circular for arc sheetmetal outer surface place circular as described arc sheetmetal place; Or, using circular for place, arc sheetmetal intermediate layer circular as described arc sheetmetal place.
Alternatively, the method comprises further: calculate described bending angle.
According to a kind of embodiment, the step calculating bending angle comprises:
According to the length of side connecing regular polygon in the radius of described arc sheetmetal place circle, described circle, calculate the limit number of this regular polygon, and calculate the angle of adjacent two edges in described regular polygon further, as described bending angle.
Follow according to a kind of embodiment, utilize a bender to carry out bending.
Alternatively, a nose radius is used to be greater than fixing a cutting tool of plate thickness twice.
As can be seen from such scheme, due to embodiments of the invention adopt plural block is divided into metallic plate and the method for bending to obtain a polygonal part, and be approximately arc sheetmetal, so relative to 94105682.1 patents, there is arc more accurately.The method of the embodiment of the present invention, does not need special pressing equipment or volume circle equipment, so relative to 201120008850.8 utility models, also has lower-cost advantage.
Accompanying drawing explanation
The preferred embodiments of the present invention will be described in detail by referring to accompanying drawing below, the person of ordinary skill in the art is more clear that above-mentioned and other feature and advantage of the present invention, in accompanying drawing:
Fig. 1 is the schematic diagram of the workpiece according to the embodiment of the present invention.
Fig. 2 is the partial schematic diagram adopting regular polygon simulation arc sheetmetal place circle.
Fig. 3 is the schematic diagram in the embodiment of the present invention, metallic plate being carried out to mark.
Fig. 4 is the schematic diagram of bending in the embodiment of the present invention.
Wherein, Reference numeral is as follows:
The other parts 201 metal plate middle layer place of 101 arc sheetmetal 102-105 workpiece is circular
202 regular polygon 301 bending position line R radiuses
The angle on the adjacent both sides of θ central angle a length of side β; Bending angle
D thickness 401 is fixed a cutting tool 402 metallic plates
403 bottom tools
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, the present invention is described in more detail by the following examples.
Fig. 1 is the schematic diagram of involved workpiece in this specific embodiment.As shown in Figure 1, this workpiece comprises one section of arc sheetmetal 101 that the present embodiment method can be adopted to process and other parts 102,103,104,105.The radius R of this arc sheetmetal 101 inner surface place circle is 861.5mm, and radian (central angle) θ of this arc sheetmetal 101 is 43.5 °.The thickness d of arc sheetmetal 101 is 2mm.Emphasis due to the present embodiment does not lie in the other parts 102,103,104,105 making workpiece, and therefore the present embodiment does not do more detailed introduction to these parts 102,103,104,105.
In the method for the making arc sheetmetal of the present embodiment, simulate the circle at arc sheetmetal 101 place with a regular polygon, and by processing a part for this regular polygon, thus be met the arc sheetmetal of technique franchise.This regular polygon can connect regular polygon in described circle, or the circumscribed regular polygon of described circle.Connecing regular polygon is in the present embodiment that example is described, but it will be appreciated by those skilled in the art that circumscribed regular polygon can be suitable for equally.
Because metallic plate has certain thickness, the present embodiment is circular circular as this arc sheetmetal place recited above using the place, intermediate layer of arc sheetmetal.When the Thickness Ratio of metallic plate is thinner, can the circle at or arc sheetmetal outer surface place circular using the inner surface place of arc sheetmetal as the circle at this arc sheetmetal place.
Method according to the making arc sheetmetal of the present embodiment comprises the following steps:
Step S11, determines the length of side of regular polygon.
Fig. 2 is the partial view adopting regular polygon approximate simulation arc sheetmetal place circle.Regular polygon 202 is connect as the simulation to this circle in place, arc sheetmetal 101 intermediate layer circle 201.According to parameters such as the thickness of arc sheetmetal, the radius equidimension of arc sheetmetal place circle 201 and bending machine die specifications, in this specific embodiment, described regular polygon 202 length of side a size is set as 8mm.
Step S12, calculates the angle of adjacent two edges in regular polygon 202.
According to the character of regular polygon, the limit number that can calculate regular polygon 202 by above-mentioned parameter is:
N＝(R+1/2*d)*2*π/a
Wherein, N is the limit number of regular polygon, and R is the radius of arc sheetmetal 101 inner surface place circle, d is the thickness of arc sheetmetal, (R+1/2*d) be the radius of place, arc sheetmetal 101 intermediate layer circle 201, π is pi, and a is the length of side of regular polygon 202.As calculated, N=677.
Draw acute angle folded by regular polygon 202 adjacent two edges further:
β＝360°/N
Wherein β is the angle of regular polygon 201 adjacent two edges, and N is the limit number of regular polygon.β is about 0.5 ° as calculated.
Step S13, metallic plate to be processed marks a plurality of position lines 301 (mark), and the spacing of these position lines is the length of side a of regular polygon 202.
Fig. 3 is the schematic diagram in the present embodiment, metallic plate being carried out to mark.In order to make bending more accurate, be necessary to draw a plurality of bending position lines 301 on a metal plate.In the present embodiment, position line 301 is processed with beating calibration method when laser cutting, position line 301 interval equals above-mentioned length of side a, according to the length of metallic plate and the length of side of regular polygon or according to the central angle of arc sheetmetal and the angle of regular polygon adjacent two edges, can know and need picture 80 road position line, wherein deduct due to arc sheetmetal 201 and the length shared by other parts 102,104 junction bent angle.
Step S14, at every bar position line place, the angle obtained in step S12, as bending angle, carries out bending to metallic plate.
In this step, on above-mentioned bending position line 301, with above-mentioned angle beta for bending is carried out at bending angle.Adopt bender to carry out bending in the present embodiment, bender fix a cutting tool parameter specification select R5 specification (nose radius is 5mm).The present embodiment preferably adopts larger the fixing a cutting tool of nose radius, and such as nose radius is greater than fixing a cutting tool of plate thickness twice, and such bending part can not exist obvious folding line, can simulate arc better.Fig. 4 gives the schematic diagram of bending, and wherein, metallic plate 402 is fixed on bender bottom tool 403, and then pressure fixes a cutting tool 401, the bending angle β set by formation.
By above-mentioned bending step, the arc sheetmetal of processing request can be met.Like this, compared with process for stamping disclosed in 94105682.1 patent applications, the present embodiment can control the shape of arc better, and obtains arc more accurately.Compared with 201120008850.8 utility models, the present embodiment does not need special volume circle equipment, can reduce the cost making arc sheetmetal.
Step S15, further, can spray paint to the metallic plate after bending.Due to the covering of paint, obvious folding line can be eliminated, make arc sheetmetal basic consistent with designing requirement.
The application relates to Machining Technology field, discloses a kind of method making arc sheetmetal, comprising: on a metallic plate, mark a plurality of bending position lines; At every bar position line place, with a bending angle, bending is carried out to described metallic plate.Due to embodiments of the invention adopt plural block is divided into metallic plate and the method for bending to obtain a polygonal part, and be approximately arc sheetmetal, so have arc more accurately.Further, the method for the embodiment of the present invention does not need special pressing equipment or volume circle equipment, also has lower-cost advantage.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. make a method for arc sheetmetal, comprising:
A metallic plate marks a plurality of bending position lines;
At every bar position line place, with a bending angle, bending is carried out to described metallic plate,
The spacing of adjacent positioned line equals a polygonal length of side, and this polygon is connect regular polygon or circumscribed regular polygon in the circle of arc sheetmetal place.
2. method according to claim 1, is characterized in that, using circular for arc sheetmetal inner surface place circular as described arc sheetmetal place;
Or, using circular for arc sheetmetal outer surface place circular as described arc sheetmetal place;
Or, using circular for place, arc sheetmetal intermediate layer circular as described arc sheetmetal place.
3. method according to claim 1, is characterized in that, the method comprises further: calculate described bending angle.
4. method according to claim 3, is characterized in that, the step calculating bending angle comprises:
According to the length of side connecing regular polygon in the radius of described arc sheetmetal place circle, described circle, calculate the limit number of this regular polygon, and calculate the angle of adjacent two edges in described regular polygon further, as described bending angle.
5. method according to claim 1, is characterized in that, utilizes a bender to carry out bending.
6. method according to claim 5, is characterized in that, uses a nose radius to be greater than fixing a cutting tool of plate thickness twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521306.2A CN103846319B (en) | 2012-12-07 | 2012-12-07 | Make the method for arc sheetmetal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521306.2A CN103846319B (en) | 2012-12-07 | 2012-12-07 | Make the method for arc sheetmetal |
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| Publication Number | Publication Date |
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| CN103846319A CN103846319A (en) | 2014-06-11 |
| CN103846319B true CN103846319B (en) | 2016-03-30 |
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| CN201210521306.2A Active CN103846319B (en) | 2012-12-07 | 2012-12-07 | Make the method for arc sheetmetal |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458043B (en) * | 2015-12-09 | 2017-07-11 | 中船西江造船有限公司 | The method that fender pipe is suppressed using numerical control bender |
| CN106238517B (en) * | 2016-08-10 | 2017-12-29 | 辽宁瑞丰专用车制造有限公司 | A kind of bending technique of U-shaped section arm support |
| AT520563B1 (en) * | 2017-12-22 | 2019-05-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Determination of the bending shortening of a sheet metal workpiece to be bent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062262U (en) * | 1989-11-11 | 1990-09-19 | 袁先凯 | Hand plate bending machine |
| JP3790404B2 (en) * | 2000-02-21 | 2006-06-28 | 三菱樹脂株式会社 | Bending processing method and apparatus |
| CN101644921A (en) * | 2009-08-05 | 2010-02-10 | 无锡信捷电气有限公司 | Improved method for designing numerical control bending of plate |
| CN101954392A (en) * | 2009-07-14 | 2011-01-26 | 凯硕电脑(苏州)有限公司 | Method for flanging without broken filaments |
-
2012
- 2012-12-07 CN CN201210521306.2A patent/CN103846319B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062262U (en) * | 1989-11-11 | 1990-09-19 | 袁先凯 | Hand plate bending machine |
| JP3790404B2 (en) * | 2000-02-21 | 2006-06-28 | 三菱樹脂株式会社 | Bending processing method and apparatus |
| CN101954392A (en) * | 2009-07-14 | 2011-01-26 | 凯硕电脑(苏州)有限公司 | Method for flanging without broken filaments |
| CN101644921A (en) * | 2009-08-05 | 2010-02-10 | 无锡信捷电气有限公司 | Improved method for designing numerical control bending of plate |
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| CN103846319A (en) | 2014-06-11 |
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