CN108213143A - A kind of design method of the progressive flanging forming tool heads of cylinder - Google Patents
A kind of design method of the progressive flanging forming tool heads of cylinder Download PDFInfo
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- CN108213143A CN108213143A CN201810210431.9A CN201810210431A CN108213143A CN 108213143 A CN108213143 A CN 108213143A CN 201810210431 A CN201810210431 A CN 201810210431A CN 108213143 A CN108213143 A CN 108213143A
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A kind of design method of the progressive flanging forming tool heads of cylinder, first design carry the forming tool head of circular cone structure form, and forming tool head is revolving body, and the lower end of revolving body is knife bar, as clamp area；It is the frustum of a cone above knife bar, as bending deformation area；It is cylinder above the frustum of a cone, as flanging forming area；Then it determines the diameter of knife bar, then determines the relative dimensions of the frustum of a cone, finally determine the height and diameter of cylinder, forming tool head of the present invention can complete the progressive flanging forming of single pass of cylindrical member or the progressive flanging forming of multi-pass.
Description
Technical field
The invention belongs to the design sides of sheet forming technical field more particularly to a kind of progressive flanging forming tool heads of cylinder
Method.
Background technology
Progressive molding technique is the initiative technique developed and studied comprehensively in the more than ten years in past, they can be non-big
Traditional Sheet Metal Forming Technology is substituted under the conditions of large-scale production.The advantages of in addition to as stepless increment and flexible manufacturing technique, experiment is ground
Study carefully discovery, the formability of progressive molding technique is typically larger than conventional stretch forming, deep draw and Sheet Metal Forming Technology.Use progressive molding
Technology is formed with the flange part of pre-manufactured hole, has flexibility, during low consumption, the features such as low cost, formability is high.
At present, in the research of progressive flanging forming, the head structure used is broadly divided into two types.One kind is end
Portion is hemispheric spherical tool heads, and the diameter of tool heads is often below 15mm.It is another then be the bar shaped work with the frustum of a cone
Have head, reversed progressive flanging forming can be completed using the tool heads.Chinese patent (application number CN 201310480432) proposes
A kind of method that thin-wall tube tube wall pre-manufactured hole hole flanging is realized using progressive molding technique, uses forming tool head to complete tube wall
Hole flanging shapes, but does not specifically give head structure method for determining dimension.
For the above-mentioned conical tool heads that can realize backward flanging forming, the size of flange height and tool heads
Between there is corresponding geometrical relationships.During progressive flanging forming, the structure size of tool heads directly affects work
The loading passage and forming effect of skill.However, in existing research, do not have also for the structure size of tool heads and explicitly set
Meter method.
Invention content
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of progressive flanging forming works of cylinder
Have a design method of head, the forming tool head of design can complete the progressive flanging forming of single pass or the progressive flange of multi-pass into
Shape.
In order to achieve the above object, this invention takes following technical solutions：
A kind of design method of the progressive flanging forming tool heads of cylinder, includes the following steps：
The first step：Forming tool head of the design with circular cone structure form, forming tool head is revolving body, revolving body
Lower end is the knife bar 1 of a diameter of d, as clamp area；The top of knife bar 1 is a diameter of D in lower surface1, a diameter of D in upper surface2, it is high
It spends for h1, cone angle is the frustum of a cone 2 of θ, as bending deformation area；2 top of the frustum of a cone is diameter D2, height h2Cylinder 3, make
For flanging forming area；Round-corner transition is equipped between the taper surface of the frustum of a cone 2 and lower surface and cylinder 3；
Second step：Determine the diameter d of knife bar 1, the value range of diameter d is 10~20mm；
Third walks：Determine the relative dimensions of the frustum of a cone 2：The lower surface diameter D of the frustum of a cone 21Bigger by 5 than the diameter d of knife bar 1~
8mm；Angle folded by the inclined-plane of the frustum of a cone 2 and the axis of revolving body is θ, and the value range of θ is at 20 °~30 °；The frustum of a cone 2
Height h1With the internal diameter d of cylindrical member 41, outside diameter d2, thickness t, pre-drilled cavity major axis dimension a, minor axis dimension b, flange branch bore dm、
Flange branch pipe outside diameter dtIt is related with flange height H；During the progressive flanging forming of cylinder, the limit of single pass progressive molding is turned over
Side height is Hmax；
As flange height H≤Hmax, then using the progressive flanging forming of single pass；In forming process, cylindrical member 4 occurs curved
The maximum length of song deformation is l=h1min× tan θ are established X-axis with the cylinder axis of cylindrical member 4, are built with the pipe axis of flange branch pipe
Vertical Z axis, establishes corresponding Y-axis, the cylindrical member volume to deform before flange is perpendicular to X, Z axisWhereinX, y is each curve in XOY plane
The value of interior projection；The cylindrical member volume to deform after flange isWhereinAccording to constancy of volume principle, volume is equal before and after flange, i.e. V0=V1, then determined by following formula
The height h of the frustum of a cone 21Minimum value h1min：Its
InAnd dm=b+2h1min；Therefore, in cylinder
During the progressive flanging forming of single pass, the height h of the design tool head frustum of a cone 21It should be greater than the minimum value calculated, i.e. h1≥
h1min；
As flange height H ＞ Hmax, then using the progressive flanging forming of multi-pass；In the process of the progressive flanging forming of multi-pass
In, traverse feed a distance Δ l, maximum transversal amount of feeding Δ l is needed to determine as needed, and horizontal between each forming passage
It is t≤Δ l≤h to the value condition of amount of feeding Δ l1Thus × tan θ obtain the height h of the tool heads frustum of a cone 21Minimum value beTherefore, during the progressive flanging forming of multi-pass cylinder, the height h of the design tool head frustum of a cone 21Ying great
In the minimum value of calculating, i.e.,
By the lower surface diameter D of the frustum of a cone 21, taper angle theta and height h1Value determine upper surface diameter D2, upper surface diameter D2
Value be D2=D1+2h1×tanθ；
4th step：Determine the height h of cylinder 32With diameter D2；The height h of cylinder 32Value range for 10~
30mm；The diameter D of cylinder 32With the upper surface diameter D of the frustum of a cone 22It is in the same size, i.e. the diameter D of cylinder 32Value be
D2=D1+2h1×tanθ。
The invention has the advantages that propose a kind of progressive flanging forming tool heads design side of simple, easy cylinder
Method；The head structure of this method design is simple, easy to produce and process；This method specifies the geometry of each area size of tool heads
Relationship and value range are conducive to shorten design time, have the advantages that time-saving and efficiency；This method is suitable for single pass and multiple tracks
The progressive flanging forming of cylinder of secondary production, has a wide range of application.
Description of the drawings
Fig. 1 is the head structure schematic diagram that the present invention carries circular cone structure form.
Fig. 2 is establishes cylinder reference axis schematic diagram.
Fig. 3 is the progressive flanging forming schematic diagram of cylinder single pass.
Fig. 4 is volume change schematic diagram before and after the progressive flanging forming of cylinder single pass.
Fig. 5 is the progressive flanging forming schematic diagram of cylinder multi-pass.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
A kind of design method of the progressive flanging forming tool heads of cylinder, includes the following steps：
The first step：With reference to Fig. 1, forming tool head of the design with circular cone structure form, forming tool head is revolving body,
The lower end of revolving body is the knife bar 1 of a diameter of d, as clamp area, for being connected with handle of a knife, mounted on heavy caliber thick wall cylinder gradually
Into on flexible hemmer；The top of knife bar 1 is a diameter of D in lower surface1, a diameter of D in upper surface2, it is highly h1, cone angle is θ's
The frustum of a cone 2, as bending deformation area, for cylindrical member to be made to occur bending and deformation；2 top of the frustum of a cone is diameter D2, height h2Circle
Cylinder 3, as flanging forming area, for the cylindrical member to occur bending and deformation to be completed flanging forming；The taper surface of the frustum of a cone 2 with
Round-corner transition is equipped between lower surface and cylinder 3；
Second step：With reference to Fig. 1, the diameter d of knife bar 1 is determined：To ensure that it is certain firm that tool heads possess in forming process
Degree, the diameter d of knife bar 1 cannot be too small, and the value range of diameter d is 10~20mm；
Third walks：With reference to Fig. 1, the relative dimensions of the frustum of a cone 2 are determined：The lower surface diameter D of the frustum of a cone 21It is more straight than knife bar 1
Big 5~the 8mm of diameter d；Angle folded by the inclined-plane of the frustum of a cone 2 and the axis of revolving body is θ, and the value range of θ is at 20 °~30 °；Circle
The height h of frustum 21With the internal diameter d of cylindrical member 41, outside diameter d2, thickness t, pre-drilled cavity major axis dimension a, minor axis dimension b, flange branch pipe
Internal diameter dm, flange branch pipe outside diameter dtIt is related with flange height H, during the progressive flanging forming of cylinder, single pass progressive molding
Limitative flanging height is Hmax；
With reference to Fig. 2, Fig. 3 and Fig. 4, as flange height H≤Hmax, then using the progressive flanging forming of single pass；In forming process
In, the maximum length that cylindrical member 4 occurs bending and deformation is l=h1min× tan θ establish X-axis, to turn over the cylinder axis of cylindrical member 4
The pipe axis of side branch pipe establishes Z axis, and corresponding Y-axis is established perpendicular to X, Z axis, and the cylindrical member volume to deform before flange isWhereinX, y is each curve in XOY plane
The value of interior projection；The cylindrical member volume to deform after flange isWhereinAccording to constancy of volume principle, volume is equal before and after flange, i.e. V0=V1, then determined by following formula
The height h of the frustum of a cone 21Minimum value h1min：Its
InAnd dm=b+2h1min；Therefore, in cylinder
During the progressive flanging forming of single pass, the height h of the design tool head frustum of a cone 21It should be greater than the minimum value calculated, i.e. h1≥
h1min；
With reference to Fig. 5, as flange height H ＞ Hmax, then using the progressive flanging forming of multi-pass；The progressive flange of multi-pass into
During shape, need traverse feed a distance Δ l, maximum transversal amount of feeding Δ l as needed between each forming passage
It determines, and the value condition of lateral feed Δ l is t≤Δ l≤h1Thus × tan θ obtain the height h of the tool heads frustum of a cone 21's
Minimum value isTherefore, in the progressive flangikng forming process of multi-pass, the height of the design tool head frustum of a cone 2
Spend h1The minimum value calculated is should be greater than, i.e.,
With reference to Fig. 1, by the lower surface diameter D of the frustum of a cone 21, taper angle theta and height h1Value determine upper surface diameter D2, upper table
Face diameter D2Value be D2=D1+2h1×tanθ；
4th step：With reference to Fig. 1, the height h of cylinder 3 is determined2With diameter D2；The height h of cylinder 32Value range be
10~30mm；The diameter D of cylinder 32With the upper surface diameter D of the frustum of a cone 22It is in the same size, i.e. the diameter D of cylinder 32Take
It is worth for D2=D1+2h1×tanθ。
Claims (1)
1. a kind of design method of the progressive flanging forming tool heads of cylinder, which is characterized in that include the following steps：
The first step：Forming tool head of the design with circular cone structure form, forming tool head is revolving body, the lower end of revolving body
It is the knife bar (1) of a diameter of d, as clamp area；It is a diameter of D in lower surface above knife bar (1)1, a diameter of D in upper surface2, it is high
It spends for h1, cone angle is the frustum of a cone (2) of θ, as bending deformation area；It is diameter D above the frustum of a cone (2)2, height h2Cylinder
(3), as flanging forming area；Round-corner transition is equipped between the taper surface of the frustum of a cone (2) and lower surface and cylinder (3)；
Second step：Determine the diameter d of knife bar (1), the value range of diameter d is 10~20mm；
Third walks：Determine the relative dimensions of the frustum of a cone (2)：The lower surface diameter D of the frustum of a cone (2)1Diameter d than knife bar (1) is big by 5
~8mm；Angle folded by the inclined-plane of the frustum of a cone (2) and the axis of revolving body is θ, and the value range of θ is at 20 °~30 °；The frustum of a cone
(2) height h1With the internal diameter d of cylindrical member (4)1, outside diameter d2, thickness t, pre-drilled cavity major axis dimension a, minor axis dimension b, flange branch pipe
Internal diameter dm, flange branch pipe outside diameter dtIt is related with flange height H, during the progressive flanging forming of cylinder, single pass progressive molding
Limitative flanging height is Hmax；
As flange height H≤Hmax, then using the progressive flanging forming of single pass；In forming process, cylindrical member (4) bends
The maximum length of deformation is l=h1min×tanθ；X-axis is established with the cylinder axis of cylindrical member (4), is built with the pipe axis of flange branch pipe
Vertical Z axis, corresponding Y-axis is established perpendicular to X, Z axis；The cylindrical member volume to deform before flange isWhereinX, y is each curve in XOY plane
The value of interior projection；The cylindrical member volume to deform after flange isWhereinAccording to constancy of volume principle, volume is equal before and after flange, i.e. V0=V1, then circular cone is determined by following formula
The height h of platform (2)1Minimum value h1min：WhereinAnd dm=b+2h1min, therefore, in cylinder list
During the progressive flanging forming of passage, the height h of the design tool head frustum of a cone (2)1It should be greater than the minimum value calculated, i.e. h1≥
h1min；
As flange height H ＞ Hmax, then using the progressive flanging forming of multi-pass；During the progressive flanging forming of multi-pass, often
Traverse feed a distance Δ l, maximum transversal amount of feeding Δ l is needed to determine as needed between a forming passage, and laterally into
Value condition to amount Δ l is t≤Δ l≤h1Thus × tan θ obtain the height h of the tool heads frustum of a cone (2)1Minimum value beTherefore, during the progressive flanging forming of multi-pass cylinder, the height h of the design tool head frustum of a cone (2)1It should
More than the minimum value of calculating, i.e.,
By the lower surface diameter D of the frustum of a cone (2)1, taper angle theta and height h1Value determine upper surface diameter D2, upper surface diameter D2's
Value is D2=D1+2h1×tanθ；
4th step：Determine the height h of cylinder (3)2With diameter D2；The height h of cylinder (3)2Value range for 10~
30mm；The diameter D of cylinder (3)2With the upper surface diameter D of the frustum of a cone (2)2It is in the same size, i.e. the diameter D of cylinder (3)2's
Value is D2=D1+2h1×tanθ。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020421A (en) * | 2021-03-11 | 2021-06-25 | 东南大学 | Forming method of deep cylindrical part |
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| CN103521607A (en) * | 2013-10-15 | 2014-01-22 | 重庆大学 | Numerical-control progressive tube wall hole flanging and forming tool head and method |
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| CN104985041A (en) * | 2015-06-15 | 2015-10-21 | 浙江上风高科专风实业有限公司 | Housing case flanger and use method thereof |
| CN105598280A (en) * | 2015-12-25 | 2016-05-25 | 佛山市成阳正大模具五金塑料有限公司 | High-precision flanging die for thick plate and flanging process |
| CN106903204A (en) * | 2017-01-22 | 2017-06-30 | 湖北三江航天江北机械工程有限公司 | Multi-angle conical shell rotary press modelling method |
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2018
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58132324A (en) * | 1982-01-29 | 1983-08-06 | Hitachi Ltd | Formation for flange of casing for axialflow hydraulic machine |
| CN102172699A (en) * | 2010-12-20 | 2011-09-07 | 西安交通大学 | Spinning head for double-roll holding spinning forming of thin-wall rotary flange pieces |
| CN103480704A (en) * | 2013-09-10 | 2014-01-01 | 西北工业大学 | Incremental bending and forming method of hat-shaped member |
| CN103521607A (en) * | 2013-10-15 | 2014-01-22 | 重庆大学 | Numerical-control progressive tube wall hole flanging and forming tool head and method |
| CN104368662A (en) * | 2014-11-14 | 2015-02-25 | 重庆大学 | Tool head and method for controlling buckling deformation in thin plate die-free gradual edge turning process |
| CN104985041A (en) * | 2015-06-15 | 2015-10-21 | 浙江上风高科专风实业有限公司 | Housing case flanger and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113020421A (en) * | 2021-03-11 | 2021-06-25 | 东南大学 | Forming method of deep cylindrical part |
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