CN104525658A - Spiral circle bending method - Google Patents
Spiral circle bending method Download PDFInfo
- Publication number
- CN104525658A CN104525658A CN201410782392.1A CN201410782392A CN104525658A CN 104525658 A CN104525658 A CN 104525658A CN 201410782392 A CN201410782392 A CN 201410782392A CN 104525658 A CN104525658 A CN 104525658A
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- China
- Prior art keywords
- bending
- bent
- lateral pressure
- bending die
- pressure wheel
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Classifications
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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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
Abstract
The invention discloses a spiral circle bending method belongs to the technical field of metal bending machining. According to the method, spiral bending forming is achieved through mutual motion of a bending die body and a side pressing wheel of a bending die; the bending die rotates, and meanwhile the side pressing wheel moves downwards to drive a part to be bent to rotate spirally. The method comprises the specific steps that at first, the bending die is designed and is a buffing wheel, and the side pressing wheel is a cavity wheel; then the part to be bent is placed into a cavity of the bending die, the bending die rotates, and meanwhile the side pressing wheel moves downwards to drive the part to be bent to rotate spirally to carry out circle bending operation; finally, after circle bending is finished, the part bent spirally is taken out for sizing cutting. According to the method, a large number of circular ring parts of multiple specifications can be bent through one-time forming, any circular ring part of 0-360 degrees can be bent, the problem that a whole ring part can not be bent easily is solved, and the production efficiency of circle bending is improved.
Description
Technical field
The invention belongs to metal bending processing technique field, particularly a kind of curved round method of spiral.
Background technology
Due to some particular/special requirements to structural member shape, annulus part is widely used in the fields such as Aeronautics and Astronautics, naval vessel, automobile.Conventional bending process mainly comprises roll bending, free bend and the laser bending etc. that rely on the stretch bending of tool and mould shape formable, go for a stroll and bend and rely on motion to be shaped.
The quality of item bending due to the method for going for a stroll is higher, and the aerospace field application required at high-quality is more extensive.Traditional mode of going for a stroll takes plain bending more, can bend out any annulus part being less than 360 °, but is difficult to realize for domain part, and once only can bend out goods, and bending efficiency is low.
Summary of the invention
The object of the invention is to, overcome above-mentioned the deficiencies in the prior art, provide a kind of spiral curved round method.The method is gone for a stroll on the basis of technique in tradition, changes bend mode, relies on the bending die of bending mould and the mutual motion of lateral pressure wheel to realize helical buckling and be shaped, to solve the difficult problem that domain part not easily bends, and improve bending efficiency and the qualification rate of annulus part.
To achieve these goals, the technical solution used in the present invention is:
A kind of curved round method of spiral, realizes helical buckling by the bending die of bending mould and the mutual motion of lateral pressure wheel and is shaped; Bending die rotates, and lateral pressure wheel moves downward simultaneously, drives to be bent helical rotation.
The curved round method of above-mentioned spiral, specifically comprises the following steps:
(1) design bending mould, bending die is halo, and lateral pressure wheel is die cavity wheel;
(2) to be bent is placed in the die cavity of bending mould, one end chuck is fixed on bending die, and the other end is placed on guide plate;
(3) curved circle operation: bending die rotates, and lateral pressure wheel moves downward simultaneously, drives to be bent helical rotation;
(4) after curved circle completes, unclamp chuck, helical buckling part is taken out;
(5) the annulus part of angle of bend needed for Length-fixing cutting leveling.
Wherein,
The diameter of halo described in step (1) is that bool inner diameter values subtracts and estimates internal diameter springback capacity; The die cavity size of described die cavity wheel is determined by bool section shape and size.
In step (3) during curved circle operation, impose lateral pressure to lateral pressure wheel, guide plate imposes backward pull, the neglecting greatly the material properties of to be bent and determine of power; Rotary speed and the bool size of the speed that lateral pressure wheel moves downward and bending die match, to ensure that bending annulus part keeps suitable pitch.
Beneficial effect of the present invention:
The present invention utilizes the mutual motion of the bending die of bending mould and lateral pressure wheel to realize helix-deformed behavior, solves the difficult problem that domain part not easily bends; Bending efficiency is gone for a stroll than traditional plane and is improve 2 ~ 3 times, and the once-forming annulus part that can bend out many specifications, most amount, can bend any annulus part of 0 ° ~ 360 °; The structure that bending die is halo, lateral pressure wheel is die cavity wheel is easier to the taking-up of bool.
Accompanying drawing explanation
Fig. 1 is the curved round method schematic diagram of bending apparatus and spiral; Wherein, (a) is bending apparatus schematic diagram, 1-bending die, 2-chuck, 3-lateral pressure wheel, to be bent of 4-, 5-guide plate, and (b) is the curved round method schematic diagram of spiral.
Fig. 2 is embodiment 1 lateral pressure wheel and finished product schematic diagram; Wherein, (a) is lateral pressure wheel, and (b) is finished product schematic diagram.
Fig. 3 is embodiment 2 lateral pressure wheel and finished product schematic diagram; Wherein, (a) is lateral pressure wheel, and (b) is finished product schematic diagram.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention will be further described, content of the present invention can be made to become more clear and easy understand, but can not be interpreted as limitation of the present invention.Some nonessential improvement and adjustment that the person skilled in the art in this field does the present invention according to the invention described above content, all can not depart from protection category of the present invention.
Embodiment 1
The material that the present embodiment is used for curved circle is a kind of aluminum rectangular tube material, and sectional dimension is 14.1mm × 12.1mm, and wall thickness is 2mm, and material is 6061 aluminium alloys, in As-extruded.The dimensional requirement bending annulus part is: the domain, and external diameter is Φ 200mm, and cross section is 13.5mm × 12.5mm, wall thickness 2mm, cross section and wall thickness dimension tolerance+0.1mm, outside dimension tolerance+0.5mm.
The curved round operation of spiral comprises the following steps:
(1) bending mould is designed: as shown in Fig. 1 (a), bending die 1 is halo, diameter is that bool inner diameter values subtracts and estimates internal diameter springback capacity and be about 166mm, exact value calculates according to the actual springback capacity of internal diameter, lateral pressure wheel 3 is rectangular-shaped die cavity wheel (see Fig. 2 (a)), die cavity size is bool sectional dimension 13.5 (0 ,+0.1) mm × 12.5 (0 ,+0.1) mm;
(2) treat bool according to curved round Len req and carry out scale, length is 1500mm, and be placed in the die cavity be made up of bending die 1 and lateral pressure wheel 3 by be bent 4, one end is fixed on bending die 1 by chuck 2, and the other end is placed on guide plate 5;
(3) curved circle operation: as shown in Fig. 1 (b), bending die 1 rotates, and imposes 150 ~ 160N/mm to lateral pressure wheel 3
2lateral pressure, guide plate imposes the backward pull of 25 ~ 26MPa, lateral pressure wheel 3 moves downward simultaneously, drive to be bent 4 helical rotation, lateral pressure wheel 3 moves downward the rotary speed of speed and bending die 1 and bool size matches, ensure that bending annulus part keeps the pitch of 14 ~ 15mm, spiral bends 2.5 circles;
(4) after curved circle completes, unclamp chuck 2, helical buckling part is taken out;
(5) last Length-fixing cutting two pieces domain part leveling.
The processed finished products part of the present embodiment is as shown in Fig. 2 (b), and through inspection, product is qualified.
Embodiment 2
The material that the present embodiment is used for curved circle is a kind of copper alloy bar, and cross section is circular, and diameter is Φ 14.2mm, and its material is H90, in As-extruded.The dimensional requirement bending annulus part is: semi-loop, and sectional dimension is Φ 14.2mm, and circle diameter is Φ 180mm, and sectional dimension tolerance is ± 0.1mm, and outside dimension tolerance is ± 0.5mm.
The curved round operation of spiral comprises the following steps:
(1) bending mould is designed: bending die 1 is halo, diameter is that bool inner diameter values subtracts and estimates internal diameter springback capacity and be about 142mm, exact value calculates according to the actual springback capacity of internal diameter, lateral pressure wheel 3 is semicircle die cavity wheel (see Fig. 3 (a)), die cavity diameter is Φ 14.2 (0 ,+0.1) mm;
(2) treat bool according to curved round Len req and carry out scale, length is 1450mm, and be placed in the die cavity be made up of bending die 1 and lateral pressure wheel 3 by be bent 4, one end is fixed on bending die 1 by chuck 2, and the other end is placed on guide plate 5;
(3) curved circle operation: bending die 1 rotates, and imposes 180 ~ 200N/mm to lateral pressure wheel 3
2lateral pressure, guide plate imposes the backward pull of 25 ~ 26MPa, lateral pressure wheel 3 moves downward simultaneously, drive to be bent 4 helical rotation, lateral pressure wheel 3 moves downward the rotary speed of speed and bending die 1 and bool size matches, ensure that bending annulus part keeps the pitch of 15 ~ 16mm, spiral bends 2.5 circles;
(4) after curved circle completes, unclamp chuck 2, helical buckling part is taken out;
(5) last Length-fixing cutting four and half ring leveling.
The processed finished products part of the present embodiment is as shown in Fig. 3 (b), and through inspection, product is qualified.
Claims (6)
1. the curved round method of spiral, is characterized in that, realizes helical buckling be shaped by the bending die of bending mould and the mutual motion of lateral pressure wheel; Bending die rotates, and lateral pressure wheel moves downward simultaneously, drives to be bent helical rotation.
2. the curved round method of a kind of spiral according to claim 1, is characterized in that, comprise the following steps:
(1) design bending mould, bending die is halo, and lateral pressure wheel is die cavity wheel;
(2) to be bent is placed in the die cavity of bending mould, one end chuck is fixed on bending die, and the other end is placed on guide plate;
(3) curved circle operation: bending die rotates, and lateral pressure wheel moves downward simultaneously, drives to be bent helical rotation;
(4) after curved circle completes, unclamp chuck, helical buckling part is taken out;
(5) the annulus part of angle of bend needed for Length-fixing cutting leveling.
3. the curved round method of a kind of spiral according to claim 2, is characterized in that, the diameter of halo described in step (1) is that bool inner diameter values subtracts and estimates internal diameter springback capacity.
4. the curved round method of a kind of spiral according to claim 2, is characterized in that, the die cavity size of the wheel of die cavity described in step (1) is determined by bool section shape and size.
5. the curved round method of a kind of spiral according to claim 2, is characterized in that, in step (3) during curved circle operation, impose lateral pressure to lateral pressure wheel, guide plate imposes backward pull.
6. the curved round method of a kind of spiral according to claim 2, is characterized in that, in step (3) during curved circle operation, rotary speed and the bool size of the speed that lateral pressure wheel moves downward and bending die match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782392.1A CN104525658A (en) | 2014-12-16 | 2014-12-16 | Spiral circle bending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782392.1A CN104525658A (en) | 2014-12-16 | 2014-12-16 | Spiral circle bending method |
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| CN104525658A true CN104525658A (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410782392.1A Pending CN104525658A (en) | 2014-12-16 | 2014-12-16 | Spiral circle bending method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893556A (en) * | 2021-01-18 | 2021-06-04 | 北京航空航天大学 | Hot bending forming device for titanium alloy thin-wall full-circle part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04147720A (en) * | 1990-10-12 | 1992-05-21 | Benkan Corp | Device for manufacturing spiral bar stock of v-shape section |
| CN202114115U (en) * | 2011-06-18 | 2012-01-18 | 无锡市华尔泰机械制造有限公司 | Fixture for circular pipe-coiled pipe |
| CN203484462U (en) * | 2013-08-15 | 2014-03-19 | 云南建工安装股份有限公司 | Manufacturing device of spiral heating coil |
| CN203508692U (en) * | 2013-09-29 | 2014-04-02 | 比亚迪股份有限公司 | Portable pipe bending equipment |
| CN104190768A (en) * | 2014-09-11 | 2014-12-10 | 东莞诚兴五金制品有限公司 | Copper tube edge rolling process and mold for copper tube edge rolling process |
-
2014
- 2014-12-16 CN CN201410782392.1A patent/CN104525658A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04147720A (en) * | 1990-10-12 | 1992-05-21 | Benkan Corp | Device for manufacturing spiral bar stock of v-shape section |
| CN202114115U (en) * | 2011-06-18 | 2012-01-18 | 无锡市华尔泰机械制造有限公司 | Fixture for circular pipe-coiled pipe |
| CN203484462U (en) * | 2013-08-15 | 2014-03-19 | 云南建工安装股份有限公司 | Manufacturing device of spiral heating coil |
| CN203508692U (en) * | 2013-09-29 | 2014-04-02 | 比亚迪股份有限公司 | Portable pipe bending equipment |
| CN104190768A (en) * | 2014-09-11 | 2014-12-10 | 东莞诚兴五金制品有限公司 | Copper tube edge rolling process and mold for copper tube edge rolling process |
Non-Patent Citations (1)
| Title |
|---|
| 杨银等: ""铝合金矩形管绕弯件尺寸精度的试验研究"", 《材料科学与工艺》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893556A (en) * | 2021-01-18 | 2021-06-04 | 北京航空航天大学 | Hot bending forming device for titanium alloy thin-wall full-circle part |
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Application publication date: 20150422 |