CN105817510A - Bend forming method controlling distortion - Google Patents
Bend forming method controlling distortion Download PDFInfo
- Publication number
- CN105817510A CN105817510A CN201510001376.9A CN201510001376A CN105817510A CN 105817510 A CN105817510 A CN 105817510A CN 201510001376 A CN201510001376 A CN 201510001376A CN 105817510 A CN105817510 A CN 105817510A
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- Prior art keywords
- tubing
- distortion
- bending
- section
- height
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a bend forming method controlling distortion; a conventional bending forming method fills fine sands or low melting point support in the tubing so as to prevent tubing distortion in a forming process; the novel bend forming method adds tubing external anti-distortion control measures on the basis of said conventional method; the novel method comprises the following steps: A, filling fine sands support in the tubing part; B, making width limitation on the tubing part from the outer side, limiting two side walls from extruding deforming when a rectangular cross section tubing is bended in formation, and controlling free flowing of the rectangular cross section side wall tubing material in the bending formation process; C, externally making height limitations on the tubing part, limiting the up-down die compound height, and preventing the tubing bending portion from having unstable distortion when being impacted by the up-down compound die; D, bending processing. The method employs the large length breadth ratio rectangular cross section aluminium alloy thin wall tubing part control distortion bend forming stamping equipment, employs a press machine to carry out slow stamping formation, thus preventing material rapid flowing caused by fast stamping, and thus causing distortion.
Description
Technical field
The invention belongs to tube forming field, be specifically related to a kind of bent into shape method controlling distortion.
Background technology
Square-section tubing bending forming is when using the general stretch bending method of tubing, method of going for a stroll to shape, generally use mould o ing i.e. press shaping die method, the method mould structure is simple, easily operate, production efficiency is high, save raw material, is relatively suitable for aviation panel beating scientific research and small serial production.
Tubing press shaping die is to utilize the upper and lower mold pressing conjunction of the fixture for forming being arranged on pressing equipment to realize tube bending to shape.Tubing press shaping die frock is generally made up of upper and lower mould, and upper and lower mould is respectively provided with the shape angles of formation of parts, and upper mold is fixed on the upper table surface of pressing equipment, lower mold is fixed on the following table of pressing equipment.During shaping, preparing to shape placing part in lower mold, pressing equipment starts, and drives pressing equipment upper table surface descending, is bent the tubing that is placed in lower mold until fitting with lower mold, it is achieved part forming.
Press shaping die tubing section easily produces distortion, for avoiding this phenomenon to produce, generally fills press shaping die after fine sand or low-melting alloy inside tubing.When square-section tubing part uses press shaping die, although fine sand or low melting point is used to fill support tube wall sometimes internal, but when shaping cross section still produce heave, the distortion such as depression, affecting part quality and service life, the aluminium alloy pipe big particularly with tubing height-to-breadth ratio is more easily generated distortion when to narrow section flexure.
Summary of the invention
The technical problem to be solved in the present invention is, it is provided that a kind of new press shaping die process that can effectively control Profile distortion, improves the bending forming quality of square-section tubing part.
A kind of bent into shape method controlling distortion is provided for solving the problems referred to above technical solution of the present invention, support on the basis of preventing from forming process produces tubing distortion by filling fine sand or low melting point inside tubing at original press shaping die, increase the outside anti-aberration control measure of tubing, specifically include following steps:
A. tubing inside parts is filled fine sand to support；
B., described tubing part doing width from outside limit, when limiting square-section tubing bending forming, deformation is heaved in two side, controls square-section sidewall pipe material in bending forming process and arbitrarily flows；
C. do limitation in height from outside to described tubing part, limit upper and lower mould die height, it is to avoid bending pipes position is produced unstability by the impulsive force of upper and lower mould matched moulds and distorts；
D. bending machining.
Preferably, the anti-side that described step B is molded as under passing through with the shape cavity configuration identical with part width realizes in bending forming process is heaved；Described step C is, by tool structure, the minimum spacing between upper and lower mould is limited to square-section tubing height.
The beneficial effects of the present invention is, use aspect to control the press shaping die pressing equipment of distortion than square-section aluminum alloy thin-wall tube part, use forcing press, the most stamping, when preventing fast ram, material drastically flows generation distortion.
Accompanying drawing explanation
Specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:
Fig. 1 is the bending forming schematic diagram of the present invention；
Fig. 2 is the version A-A view of inventive die.
Wherein: 01 is cope match-plate pattern, 02 is upper mold, and 03 is shape chamber lower mold, and 04 is lead screw assembly, and 05 is lower bolster, and 06 is signal before spares bend, and 07 is signal after spares bend, and 08 is clamping plate lower mold.
Detailed description of the invention
Embodiment
Technological preparation
Manufacturing bending die by product design, upper and lower mode structure, lower mold is with the shape chamber of square-section tubing width, and shape chamber is fabricated to the laterally-clamped Split type structure of clamping plate so that putting part, pickup, upper and lower mould matched moulds limited location device；
Manufacture
Blanking；
Oil removing, removes square tube surface smut, impurity etc.；
Hair down is stung, and makes edge of materials smooth, it is to avoid injury operator, and scratches other products and mould；
The internal fine sand of filling of tubing supports；
Part is fixed; narrow for rectangle pipe material part cross section is placed in 03. shape chamber lower mold; 08. clamping plate lower mold is slided to 03. shape chamber lower mold under 04. lead screw assembly drives and is drawn close, and 03. shape chamber lower mold constitutes, with 08. clamping plate lower mold, the shape chamber that cross section narrow with rectangle pipe material is wide, makes to keep sliding with part and closes；
Bending forming, forcing press continues to come downwards to 02. upper mold shoulder after driving the 02. slow descending contact tubing part of upper mold being fixed on 01. cope match-plate pattern and 03. shape chamber lower mold shoulder contacts stops descending, and tubing is bent, and press shaping die terminates；
Inloading part; forcing press drives 02. upper mold being fixed on 01. cope match-plate pattern up, and 02. upper mold leaves the shape chamber that 03. shape chamber lower mold is constituted with 08. clamping plate lower mold, and clamping plate lower mold is slided with 03. shape chamber lower mold under 04. lead screw assembly drives and separated; guarantee that part nothing from mould pulls mould unloading, take out part；
Remove the internal filling of tubing；
Inspection, checks the quality of the products by drawing and associated specifications；
Oil removing, removes the greasy dirt etc. produced in the course of processing；
Labelling, marked product figure number, date of manufacture etc..
Claims (2)
1. the bent into shape method controlling distortion, it is characterized in that, support at original press shaping die prevent from forming process produces on the basis of tubing distorts by filling fine sand or low melting point inside tubing, increase the outside anti-aberration control measure of tubing, specifically include following steps:
A. tubing inside parts is filled fine sand to support；
B., described tubing part doing width from outside limit, when limiting square-section tubing bending forming, deformation is heaved in two side, controls square-section sidewall pipe material in bending forming process and arbitrarily flows；
C. do limitation in height from outside to described tubing part, limit upper and lower mould die height, it is to avoid bending pipes position is produced unstability by the impulsive force of upper and lower mould matched moulds and distorts；
D. bending machining.
Method the most according to claim 1, it is characterised in that the anti-side that described step B is molded as under passing through with the shape cavity configuration identical with part width realizes in bending forming process is heaved；Described step C is, by tool structure, the minimum spacing between upper and lower mould is limited to square-section tubing height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001376.9A CN105817510A (en) | 2015-01-04 | 2015-01-04 | Bend forming method controlling distortion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001376.9A CN105817510A (en) | 2015-01-04 | 2015-01-04 | Bend forming method controlling distortion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105817510A true CN105817510A (en) | 2016-08-03 |
Family
ID=56986848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510001376.9A Pending CN105817510A (en) | 2015-01-04 | 2015-01-04 | Bend forming method controlling distortion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105817510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583514A (en) * | 2016-12-15 | 2017-04-26 | 中车长春轨道客车股份有限公司 | Rail vehicle hollow aluminum alloy profile bending die and application method thereof |
| CN113070374A (en) * | 2021-03-03 | 2021-07-06 | 中国十七冶集团有限公司 | Simple cold bending method for thin-wall steel pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0589370A1 (en) * | 1992-09-25 | 1994-03-30 | Audi Ag | Method for producing a hollow body |
| JP2007136552A (en) * | 2005-11-15 | 2007-06-07 | Noble Internatl Ltd | Method and apparatus for manufacturing pipe having irregular shaped cross section, and pipe having irregular shaped cross section formed by the same method and apparatus |
| CN202725787U (en) * | 2012-05-30 | 2013-02-13 | 刘春� | Rectangular tube bending die |
| CN203917638U (en) * | 2014-07-02 | 2014-11-05 | 湘潭电机股份有限公司 | The curved mould of a kind of rectangular tube |
-
2015
- 2015-01-04 CN CN201510001376.9A patent/CN105817510A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0589370A1 (en) * | 1992-09-25 | 1994-03-30 | Audi Ag | Method for producing a hollow body |
| JP2007136552A (en) * | 2005-11-15 | 2007-06-07 | Noble Internatl Ltd | Method and apparatus for manufacturing pipe having irregular shaped cross section, and pipe having irregular shaped cross section formed by the same method and apparatus |
| CN202725787U (en) * | 2012-05-30 | 2013-02-13 | 刘春� | Rectangular tube bending die |
| CN203917638U (en) * | 2014-07-02 | 2014-11-05 | 湘潭电机股份有限公司 | The curved mould of a kind of rectangular tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583514A (en) * | 2016-12-15 | 2017-04-26 | 中车长春轨道客车股份有限公司 | Rail vehicle hollow aluminum alloy profile bending die and application method thereof |
| CN106583514B (en) * | 2016-12-15 | 2019-06-11 | 中车长春轨道客车股份有限公司 | Using rail vehicle hollow aluminium alloy profile bending die to the bending process of profile |
| CN113070374A (en) * | 2021-03-03 | 2021-07-06 | 中国十七冶集团有限公司 | Simple cold bending method for thin-wall steel pipe |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160803 |