CN107186092A - A kind of drawing die die parting line method for determining position and calculator - Google Patents
A kind of drawing die die parting line method for determining position and calculator Download PDFInfo
- Publication number
- CN107186092A CN107186092A CN201710398945.7A CN201710398945A CN107186092A CN 107186092 A CN107186092 A CN 107186092A CN 201710398945 A CN201710398945 A CN 201710398945A CN 107186092 A CN107186092 A CN 107186092A
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- China
- Prior art keywords
- line
- die
- parting line
- die parting
- trimming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention discloses a kind of drawing die die parting line method for determining position, including：Determine the position of trimming line：The distance of die parting line and trimming line is calculated according to formula L=H*tan θ+R/cos θ R*tan θ+c；By the outside offset distance L of trimming line, that is, obtain die parting line.This method can disposably calculate die parting line and trimming line apart from L, then be the die parting line for being met requirement by the outside offset distance L of trimming line, it is to avoid repetition test, efficiency high saves the time, reduces die manufacturing cost.Also disclose a kind of drawing die die parting line position and determine calculator, using formula L=H*tan θ+R/cos θ R*tan θ+c calculate die parting line and trimming line apart from L.In use, H, θ, R and c inputted into calculator, computer calculate at once die parting line and trimming line apart from L, substitute it is artificial calculate, it is very convenient quick, and ensure the accuracy that calculates.
Description
Technical field
The present invention relates to Stamping Die Technology field, and in particular to a kind of drawing die die parting line method for determining position and meter
Calculate device.
Background technology
Drawing die is in the presence of press, to pass through tabular blank by the synergy of punch-pin, cavity plate, blank holder
Plastic deformation obtains a kind of technological equipment of stable space shape.The effect of die parting line is to separate punch-pin and blank holder, properly
Shaping of the position to part of die parting line play an important role：Die parting line shapes too far to crease easily, and wastes raw material；Point
Loft is excessively near, it is possible that cracking, advanced study and training mould influences whether the product quality within trimming line.
Each part needs a set of corresponding drawing die, at present, during drawing die is manufactured, determines the step of die parting line
It is rapid as shown in figure 1, first determine the position of trimming line according to parts profile, then determine by the preresearch estimates of engineer the position of die parting line
Put, then split pattern line drawing-being split with binder surface-pull out cone-fall punch-nose angle, obtain appearance profile punch-pin as shown in Figure 2,
The point of contact of punch-nose angle horizontal tangent is checked to the distance of product trimming line, point of contact to product trimming line distance needs to control 5
Within~10mm, if apart from beyond the scope, engineers must readjust die parting line position, repeat above step, until
Without departing from range position.This mode inefficiency, and a large amount of wastes of raw material can be caused, increase manufacturing cost.
The content of the invention
, can be disposable it is an object of the invention to provide a kind of drawing die die parting line method for determining position and calculator
The position of die parting line is correctly found, efficiency is improved, die manufacturing cost is reduced.
The object of the present invention is achieved like this：Drawing die die parting line method for determining position, comprises the following steps：
I, the position for determining trimming line：The part of flange is not needed, its appearance profile line is trimming line；Need the zero of flange
Part, the outside offset distance d of its appearance profile line is trimming line, and d is the width of flange；
II, according to formula
L=H*tan θ+R/cos θ-R*tan θ+c
The distance of die parting line and trimming line is calculated,
Wherein,
L is distance of the die parting line to trimming line；
H is the height of binder surface, meets 100mm >=H >=15mm；
θ is drafting angle, is determined according to the drawing depth of the thickness T of part plate and part, and the thickness T of part plate is bigger, θ
Bigger, the drawing depth of part is bigger, and θ is bigger, and meets the minimum value that θ min+10 ° >=θ >=θ min, θ min is θ；
R is the radius of punch-nose angle, and 100mm part is less than for drawing depth, 8T >=R >=4T is met；For drawing depth
Part more than or equal to 100mm, R >=10T；
C for punch-nose angle horizontal tangent point of contact to the distance of trimming line, meet 10mm >=c >=5mm；
III, by the outside offset distance L of trimming line, that is, obtain die parting line.
Additionally provide a kind of drawing die die parting line position and determine calculator,
Using formula L=H*tan θ+R/cos θ-R*tan θ+c calculate die parting line and trimming line apart from L.
The beneficial effects of the invention are as follows：
Using the die parting line location determining method of above-mentioned drawing die, the distance of die parting line and trimming line can be disposably calculated
L, then be the die parting line for being met requirement by the outside offset distance L of trimming line, it is to avoid repetition test, efficiency high, during saving
Between, reduce die manufacturing cost.
Drawing die die parting line position determines calculator, in use, H, θ, R and c are inputted into calculator, computer is calculated at once
Die parting line and trimming line apart from L, substitute it is artificial calculate, it is very convenient quick, and ensure the accuracy that calculates.
Brief description of the drawings
Fig. 1 is the determination flow chart of die parting line in the prior art；
Fig. 2 is the profile outline of punch-pin；
Fig. 3 is die parting line position determination figure；
Fig. 4 is the punch-pin manufacturing flow chart of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is further described.
As shown in figure 3, applicant is accumulated by substantial amounts of, prolonged work, find to meet desired die parting line place
Position range in, all position of intersecting point D comprising supplement face and joint face, therefore advance an idea：Whether can be by the face of supplementing
Intersection point D with joint face is as fixed die parting line position, without taking multiple positions to be verified every time.By to many
The experiment of different parts is planted, the accuracy of imagination is demonstrated.
Die parting line is selected here, can not only meet use requirement, additionally it is possible to easily calculate die parting line to deburring
The specific distance of line, when designing the mould of different parts, can rapidly find particular location of the die parting line in the mould accurately.According to
Shown in Fig. 3, die parting line position to trimming line can be calculated apart from L according to L=a+b+c,
In RT △ AKD, because AK=H.tan θ, a=AK=H.tan θ.
In RT △ OFE, OE=OF/cos θ, in RT △ ABE, BE=AB*tan θ.
Because：B=OB；OB=OE-BE；R=OF=AB
So：B=OB=OF/cos θ-AB.tan θ=R/cos θ-R.tan θ
It can to sum up obtain：L=H*tan θ+(R/cos θ-R*tan θ)+c
Therefore, as shown in figure 4, the die parting line location determining method of the drawing die of the present invention, comprises the following steps：
I, the position for determining trimming line：The part of flange is not needed, its appearance profile line is trimming line；Need the zero of flange
Part, the outside offset distance d of its appearance profile line is trimming line, and d is the width of flange.Part is after drawing, it is necessary to enter
Row flange, then other processing are carried out, accordingly, it would be desirable to outwards offset making apart from d for flange width on the basis of profile contour line
For trimming line.
II, according to formula
L=H*tan θ+R/cos θ-R*tan θ+c
The distance of die parting line and trimming line is calculated,
Wherein,
L is distance of the die parting line to trimming line；
H is the height of binder surface, i.e. binder surface meets 100mm >=H >=15mm to the distance of land area, is drawn with specific reference to part
The formability prolonged determines that, for complexity, the part that formability is poor, H values get the small value, after the fillet of falling convex-concave, and punch-pin side wall can
With no straightway；For the part that shaping poor rigidity, drawing are shallow, H values take large values, after the fillet of falling convex-concave, it is ensured that punch-pin side wall
Leave 10~20mm straightways.
θ is drafting angle, is determined according to the drawing depth of the thickness T of part plate and part, and the thickness T of part plate is got over
Greatly, θ is bigger, and the drawing depth of part is bigger, and θ is bigger, and meets the minimum value that θ min+10 ° >=θ >=θ min, θ min is θ.θ
Min occurrence is empirically determined, can refer to following table：
| T(mm) | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.2 | 1.4 | 1.6 | 1.8 | 2.0 |
| θmin(°) | 5.7 | 8.0 | 9.2 | 10.3 | 11.5 | 13.9 | 16.2 | 18.6 | 21.1 | 23.5 |
R is the radius of punch-nose angle, and 100mm part is less than for drawing depth, 8T >=R >=4T is met；For drawing depth
Part more than or equal to 100mm, R >=10T.
C for punch-nose angle horizontal tangent point of contact to the distance of trimming line, meet 10mm >=c >=5mm.If c values are less than
5mm, pincers worker advanced study and training punch-nose angle is restricted, and is unfavorable for mould advanced study and training, if c values are more than 10mm, will be caused the wave of raw material
Take.
III, by the outside offset distance L of trimming line, that is, obtain die parting line.
Above-mentioned H, θ, R and c value is not definite value, is usually determined according to the sheet thickness of part, part complexity, right
In the not high conventional hardware of complexity, H, θ, R and c value and the L values calculated can refer to following table：
| T | c(5-10mm) | H | θ | R | a | b | L |
| 0.7 | 6 | 20 | 8 | 10 | 2.8 | 8.7 | 18 |
| 0.8 | 6 | 25 | 10 | 12 | 9.7 | 10.1 | 26 |
| 0.9 | 6 | 20 | 11 | 12 | 3.9 | 9.9 | 20 |
| 1 | 6 | 20 | 12 | 13 | 4.3 | 10.5 | 21 |
| 1.2 | 6 | 20 | 14 | 13 | 5.0 | 10.2 | 21 |
| 1.4 | 6 | 20 | 18 | 14 | 6.5 | 10.2 | 23 |
| T | c(5-10mm) | H | θ | R | a | b | L |
| 1.6 | 6 | 20 | 18 | 14 | 6.5 | 10.2 | 23 |
| 1.8 | 6 | 20 | 21 | 15 | 7.7 | 10.3 | 24 |
| 2 | 6 | 20 | 24 | 15 | 8.9 | 9.7 | 25 |
When designing or manufacturing mould, corresponding L values are directly found in upper table according to T values, the step of calculating can be omitted
Suddenly, efficiency is further improved.
Drawing die die parting line position determines calculator, and a point mould is calculated using formula L=H*tan θ+R/cos θ-R*tan θ+c
Line and trimming line apart from L.Calculator program is write according to above-mentioned formula and program is inputted into calculator chip, in use, only
Need to input H, θ, R and c value, calculator just can rapidly calculate L values, substitute artificial calculating, it is very convenient quick, and protect
Demonstrate,prove the accuracy calculated.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (2)
1. a kind of drawing die die parting line method for determining position, it is characterised in that comprise the following steps：
, determine the position of trimming line：The part of flange is not needed, its appearance profile line is trimming line；The part of flange is needed,
The outside offset distance d of its appearance profile line is trimming line, and d is the width of flange；
, according to formula
L= H*tanθ+ R/cosθ- R *tanθ+c
The distance of die parting line and trimming line is calculated,
Wherein,
L is the distance of die parting line and trimming line；
H is the height of binder surface, meets 100mm >=H >=15mm；
θ is drafting angle, is determined according to the drawing depth of the thickness T of part plate and part, and the thickness T of part plate is bigger, θ
Bigger, the drawing depth of part is bigger, and θ is bigger, and meets the minimum value that θ min+10 ° >=θ >=θ min, θ min is θ；
R is the radius of punch-nose angle, and 100mm part is less than for drawing depth, 8T >=R >=4T is met；For drawing depth
Part more than or equal to 100mm, R >=10T；
C for punch-nose angle horizontal tangent point of contact to the distance of trimming line, meet 10mm >=c >=5mm；
, by the outside offset distance L of trimming line, that is, obtain die parting line.
2. a kind of calculator using drawing die die parting line location determining method as claimed in claim 1, it is characterised in that：
Using formula L=H*tan θ+R/cos θ-R * tan θ+c calculate die parting line and trimming line apart from L.
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| CN201710398945.7A CN107186092B (en) | 2017-05-31 | 2017-05-31 | A kind of drawing die die parting line method for determining position |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015151A (en) * | 2017-12-12 | 2018-05-11 | 安徽江淮汽车集团股份有限公司 | A kind of head cover drawing forming process cavity plate and head cover drawing die |
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| JPH08287133A (en) * | 1995-04-19 | 1996-11-01 | Mazda Motor Corp | Method and device for automatic designing of press die |
| JP2000202534A (en) * | 1999-01-14 | 2000-07-25 | Toyota Motor Corp | Method for deciding flange shape in press product |
| JP2001137963A (en) * | 1999-11-15 | 2001-05-22 | Kobe Steel Ltd | Press forming method and press forming die |
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2017
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08287133A (en) * | 1995-04-19 | 1996-11-01 | Mazda Motor Corp | Method and device for automatic designing of press die |
| JP2000202534A (en) * | 1999-01-14 | 2000-07-25 | Toyota Motor Corp | Method for deciding flange shape in press product |
| JP2001137963A (en) * | 1999-11-15 | 2001-05-22 | Kobe Steel Ltd | Press forming method and press forming die |
| CN101655884A (en) * | 2009-09-21 | 2010-02-24 | 奇瑞汽车股份有限公司 | Method for automatically drawing trimming line of stamping die |
| DE102010048104B3 (en) * | 2010-10-09 | 2011-12-15 | Audi Ag | Method for manufacturing tool i.e. deep-drawing tool, to e.g. cut metal sheet material, involves adjusting die contour by linear displacement of die contour, forming stamper with stamper contour, and forming die with adjusted die contour |
| CN103617302A (en) * | 2013-10-17 | 2014-03-05 | 中南大学 | Method for building accurate molded surface of automobile covering part drawing mold |
| CN105574301A (en) * | 2016-02-25 | 2016-05-11 | 成都亨通兆业精密机械有限公司 | Design method for automobile covering part drawing die |
Non-Patent Citations (1)
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| 刘峥: "基于CATIA拉延模具工艺补充面的绘制方法", 《中小企业管理与科技(下旬刊)》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015151A (en) * | 2017-12-12 | 2018-05-11 | 安徽江淮汽车集团股份有限公司 | A kind of head cover drawing forming process cavity plate and head cover drawing die |
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| Publication number | Publication date |
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| CN107186092B (en) | 2018-12-21 |
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