CN102218461A - Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret - Google Patents

Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret Download PDF

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Publication number
CN102218461A
CN102218461A CN2011100505676A CN201110050567A CN102218461A CN 102218461 A CN102218461 A CN 102218461A CN 2011100505676 A CN2011100505676 A CN 2011100505676A CN 201110050567 A CN201110050567 A CN 201110050567A CN 102218461 A CN102218461 A CN 102218461A
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CN
China
Prior art keywords
blank
stretch
shaped steel
bending
rectangle hollow
Prior art date
Application number
CN2011100505676A
Other languages
Chinese (zh)
Inventor
庞金录
肖黎明
张小强
李宏伟
高文杰
蔡晓青
郭波
俞素军
陈东红
张卫华
谢民德
王洪臣
高金良
路香兰
Original Assignee
北京北方车辆集团有限公司
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Application filed by 北京北方车辆集团有限公司 filed Critical 北京北方车辆集团有限公司
Priority to CN2011100505676A priority Critical patent/CN102218461A/en
Publication of CN102218461A publication Critical patent/CN102218461A/en

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Abstract

The invention relates to a stretch-bending formation method of a lower enclosing rib of a rectangular hollow section gun turret, belonging to the filed of section plastic processing. The method comprises the following steps of: putting an elastic core iron into a rectangular hollow section blank, plugging one end of the blank by a plug, filling cohesive sandy soil to the other end of the blank, and plugging the other end of the blank by a plug after tamping; putting the blank filled with the elastic core iron and the cohesive sandy soil and provided with two plugged ends into two chucks of a stretch bender, and clamping and fixing the blank by using a rigid clamp; tightly compressing the upper and lower surfaces of the blank by using a clamping device; starting the stretch bender to apply pre-tensioned force at two ends of the rectangular hollow section blank; maintaining the pre-tensioned force and bending the rectangular hollow section blank along a stretch bending profile model; after bending, adding tension force to lead the rectangular hollow section blank to abut against the stretch bending profile model to mold; and unloading the tension force and taking down the molded piece from the stretch bender. According to the method, the defects of low product percent of pass, poor quality of product appearance, high production cost easily generated by using a splitting splice-welding method as well as warping, sinking, cracking, crumpling and resilience of products easily generated by using a three-roller bending method can be overcome.

Description

Enclose muscle bending forming method under the rectangle hollow shaped steel gun turret

Technical field

The invention belongs to shaped steel plastic working field, relate to a kind of bending forming of rectangle hollow shaped steel, especially enclose the bending forming of muscle under the rectangle hollow shaped steel gun turret.

Background technology

At present, mainly contain based on the manufacture method of enclosing muscle under the gun turret: split welding and three roll-ins are curved.Wherein split welding method is divided into some little plate bodys with enclosing muscle under the whole gun turret, then these platelet systems is caused required shape, it is welded together to form a whole circle at last.This method existence welding back product is yielding, radius is corrected big, the shortcomings such as product percent of pass is low, product appearance is of poor quality, utilization rate of raw materials is low, hand labor intensity is big, production cost height of difficulty.Three roll-ins are curved to be to be divided into three sections with enclosing muscle under the whole gun turret, and every section is utilized rectangle hollow shaped steel to become required radius by the bending machine roll bending, it is welded together to form a whole circle then.After there is roll bending in this method, the product springback capacity is big, gives follow-uply to repair accent work and bring very big difficulty, and is little when the product radius in addition, when sectional dimension is big, be easy to generate defectives such as warpage, depression, crackle, fold, i.e. curved radius, the sectional dimension to product of three roll-ins has limitation.

Summary of the invention

Cause shortcoming such as product percent of pass is low, product appearance is of poor quality, production cost height and the curved method of three roll-ins to cause defectives such as product warpage, depression, crackle, fold, resilience easily easily in order to overcome split welding method.The invention provides the bending forming method of enclosing muscle under a kind of rectangle hollow shaped steel gun turret, can improve product percent of pass, improve the product appearance quality, and can effectively prevent generation of defects such as warpage, depression, crackle, fold, resilience.

The technical solution adopted for the present invention to solve the technical problems is: put into the elasticity core iron in rectangle hollow shaped steel blank, with plug blank one end is blocked, fill the viscosity sandy soil inward by the blank other end, utilize the mechanical shock device the viscosity sandy soil compacting of filling in the blank; With plug the blank other end is blocked; The blank of filling elasticity core iron, viscosity sandy soil and two ends shutoff is put into stretch benders two chucks, and be fixedly clamped with the rigidity clamp; Compress the blank upper and lower faces with gripping mechanism; Open stretch benders, apply the prestretching pulling force, make it produce percentage elongation at rectangle hollow shaped steel blank two ends; Keep the prestretching pulling force, with rectangle hollow shaped steel blank along the bending of stretch bending pattern; Adding pulling force after curved makes rectangle hollow shaped steel blank near the moulding of stretch bending pattern; The removal pulling force takes off profiled member from stretch benders.

Check with the detection model; If product examination is qualified, then unclamp gripping mechanism, extract the two ends plug, take out the elasticity core iron and the viscosity sandy soil of the inside; If product examination is defective, then adjust the stretch bending pattern mend stretching to product qualified till.

The sectional dimension length of described elasticity core iron is 1/6~1/5 of rectangle hollow shaped steel blank length.

The invention has the beneficial effects as follows, can prevent effectively that product from producing defectives such as warpage, depression, fold, resilience.Before the stretch bending, in the processing procedure to rectangle hollow shaped steel blank, only used elasticity core iron, viscosity sandy soil and gripping mechanism, handled simple to operate, convenient.

Description of drawings

Fig. 1 is a structure principle chart of the present invention; 1-left side rocking arm wherein; The 2-left hydraulic cylinder; 3-left side chuck; The 4-gripping mechanism; The 5-work top; 6-flexure operation hydraulic cylinder; The 7-pattern; The 8-pressing plate; The right chuck of 9-; 10-rectangle hollow shaped steel blank; The 11-pull bar; The right hydraulic cylinder of 12-; The right rocking arm of 13-;

Fig. 2 is the used elasticity core iron of the present invention;

Fig. 3 is horizontal stroke, the profilograph after rectangle hollow shaped steel blank is filled; 1-rectangle hollow shaped steel blank wherein; 2-elasticity core iron; 3-viscosity sandy soil; 4-left side plug; The right plug of 5-;

Fig. 4 is the used gripping mechanism structural map of the present invention; The 1-leading screw; The 2-bracing frame; The 3-pressing plate.

The specific embodiment

The present invention is further described below in conjunction with drawings and Examples.

Among Fig. 1, the rectangle hollow shaped steel blank 10 of filling consolidation is placed in the stretch benders chuck; With left chuck 3 and right chuck 9 clamp rectangular hollow section blanks 10 two ends, compress the above and below of rectangle hollow shaped steel blank 10 with gripping mechanism 4; Open stretch benders left hydraulic cylinder 2 and right hydraulic cylinder 12, apply the prestretching tensile force f, make rectangle hollow shaped steel blank 10 produce 0.7~1.0% percentage elongation at rectangle hollow shaped steel blank 10 two ends; The size that keeps the prestretching tensile force f is opened flexure operation hydraulic cylinder 6, by pull bar 11, left rocking arm 1, right rocking arm 13, drives rectangle hollow shaped steel blank 10 along pattern 7 brake formings; After the moulding, add pulling force and make rectangle hollow shaped steel blank 10 medial surfaces be close to pattern 7; The left and right hydraulic cylinder pulling force of removal unclamps left and right chuck, takes out profiled member.

Among Fig. 2, the sectional dimension of elasticity core iron should be less than the sectional dimension of rectangle hollow shaped steel blank, and length is about 1/6~1/5 of rectangle hollow shaped steel blank length.The quantity of elasticity core iron should be determined according to the stretch bending actual conditions.

Among Fig. 3, elasticity core iron 2 is put into rectangle hollow shaped steel blank 1, block the left end of rectangle hollow shaped steel blank 1, fill viscosity sandy soil 3 toward rectangle hollow shaped steel blank 1 the inside, and tamp with the mechanical shock device by right-hand member with left plug 4; After having filled, block the right-hand member of rectangle hollow shaped steel blank 1 with right plug 5.

Among Fig. 4, rotating threaded shaft 1 drives pressing plate 3 and down moves in order to compress the top and bottom of rectangle hollow shaped steel blank; Rotating threaded shaft 1 drives pressing plate 3 and up moves in order to unclamp pressing plate 3.

Claims (3)

1. enclose the bending forming method of muscle under the rectangle hollow shaped steel gun turret, it is characterized in that: in rectangle hollow shaped steel blank, put into the elasticity core iron, with plug blank one end is blocked, fill the viscosity sandy soil inward by the blank other end, utilize the mechanical shock device the viscosity sandy soil compacting of filling in the blank; With plug the blank other end is blocked; The blank of filling elasticity core iron, viscosity sandy soil and two ends shutoff is put into stretch benders two chucks, and be fixedly clamped with the rigidity clamp; Compress the blank upper and lower faces with gripping mechanism; Open stretch benders, apply the prestretching pulling force, make it produce percentage elongation at rectangle hollow shaped steel blank two ends; Keep the prestretching pulling force, with rectangle hollow shaped steel blank along the bending of stretch bending pattern; Adding pulling force after curved makes rectangle hollow shaped steel blank near the moulding of stretch bending pattern; The removal pulling force takes off profiled member from stretch benders.
2. the bending forming method of enclosing muscle under the rectangle hollow shaped steel gun turret as claimed in claim 1 is characterized in that: check with the detection model behind said method; If product examination is qualified, then unclamp gripping mechanism, extract the two ends plug, take out the elasticity core iron and the viscosity sandy soil of the inside; If product examination is defective, then adjust the stretch bending pattern mend stretching to product qualified till.
3. the bending forming method of enclosing muscle under the rectangle hollow shaped steel gun turret as claimed in claim 1 or 2 is characterized in that: the sectional dimension length of described elasticity core iron is 1/6~1/5 of rectangle hollow shaped steel blank length.
CN2011100505676A 2011-03-02 2011-03-02 Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret CN102218461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100505676A CN102218461A (en) 2011-03-02 2011-03-02 Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100505676A CN102218461A (en) 2011-03-02 2011-03-02 Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret

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CN102218461A true CN102218461A (en) 2011-10-19

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103611769A (en) * 2013-12-10 2014-03-05 龙口丛林中德车体系统工程有限公司 Method for machining C-shaped arm
CN104056885A (en) * 2013-03-22 2014-09-24 浙江炜驰机械集团有限公司 Pipe forming device
CN104209414A (en) * 2014-08-21 2014-12-17 长春市正通科技开发有限公司 Supplanting pad block type multi-point forming three-dimensional stretch bending mold and forming method
CN104307948A (en) * 2014-09-26 2015-01-28 北京北方车辆集团有限公司 Rectangular hollow steel profile stretch bending forming method and special clamping device thereof
CN104384266A (en) * 2014-11-03 2015-03-04 江苏同力机械有限公司 Cold roll forming technology for escalator handrail bracket
CN104416334A (en) * 2013-09-05 2015-03-18 首都航天机械公司 Double-open type hollow profile frame stretch bending forming method
CN105436270A (en) * 2015-12-11 2016-03-30 北京有色金属研究总院 Method for machining metal pipe with tapered elbow
CN105522026A (en) * 2015-12-31 2016-04-27 龙口丛林中德车体系统工程有限公司 Large-specification and complex-section aluminum profile bending tool and bending method
CN105598227A (en) * 2016-03-29 2016-05-25 王志中 Integrated draw bender
CN106270030A (en) * 2016-09-14 2017-01-04 苏嘉杰 A kind of bent plate mechanism of two-sided clamping
CN106270029A (en) * 2016-09-14 2017-01-04 苏嘉杰 Side fixed bent plate mechanism
CN106391795A (en) * 2016-09-14 2017-02-15 苏嘉杰 Plate bending mechanism with stable clamping function
CN108568467A (en) * 2017-03-14 2018-09-25 吉林大学 A kind of stretch bending device of tyre of limitation rail vehicle top bow lateral bending
CN108568467B (en) * 2017-03-14 2021-01-26 吉林大学 Stretch bending tire device for limiting side bending of curved beam of railway vehicle roof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527452A (en) * 1978-08-17 1980-02-27 Japan Steel Eng Kk Bending method of tubular body
CN1179998A (en) * 1996-08-30 1998-04-29 Gec阿尔斯通Acb有限公司 Metal section forming equipment
JP2000117334A (en) * 1998-10-20 2000-04-25 Toyota Motor Corp Method for bending of extruded material
CN1970185A (en) * 2006-12-05 2007-05-30 成都飞机工业(集团)有限责任公司 Bending and shaping method for hollow aluminum alloy extrusion section bar

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527452A (en) * 1978-08-17 1980-02-27 Japan Steel Eng Kk Bending method of tubular body
CN1179998A (en) * 1996-08-30 1998-04-29 Gec阿尔斯通Acb有限公司 Metal section forming equipment
JP2000117334A (en) * 1998-10-20 2000-04-25 Toyota Motor Corp Method for bending of extruded material
CN1970185A (en) * 2006-12-05 2007-05-30 成都飞机工业(集团)有限责任公司 Bending and shaping method for hollow aluminum alloy extrusion section bar

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刁可山等: "矩形截面型材拉弯成形", 《北京航空航天大学学报》 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104056885A (en) * 2013-03-22 2014-09-24 浙江炜驰机械集团有限公司 Pipe forming device
CN104416334A (en) * 2013-09-05 2015-03-18 首都航天机械公司 Double-open type hollow profile frame stretch bending forming method
CN103611769A (en) * 2013-12-10 2014-03-05 龙口丛林中德车体系统工程有限公司 Method for machining C-shaped arm
CN104209414A (en) * 2014-08-21 2014-12-17 长春市正通科技开发有限公司 Supplanting pad block type multi-point forming three-dimensional stretch bending mold and forming method
CN104307948A (en) * 2014-09-26 2015-01-28 北京北方车辆集团有限公司 Rectangular hollow steel profile stretch bending forming method and special clamping device thereof
CN104384266A (en) * 2014-11-03 2015-03-04 江苏同力机械有限公司 Cold roll forming technology for escalator handrail bracket
CN105436270A (en) * 2015-12-11 2016-03-30 北京有色金属研究总院 Method for machining metal pipe with tapered elbow
CN105522026A (en) * 2015-12-31 2016-04-27 龙口丛林中德车体系统工程有限公司 Large-specification and complex-section aluminum profile bending tool and bending method
CN105598227A (en) * 2016-03-29 2016-05-25 王志中 Integrated draw bender
CN106270030A (en) * 2016-09-14 2017-01-04 苏嘉杰 A kind of bent plate mechanism of two-sided clamping
CN106270029A (en) * 2016-09-14 2017-01-04 苏嘉杰 Side fixed bent plate mechanism
CN106391795A (en) * 2016-09-14 2017-02-15 苏嘉杰 Plate bending mechanism with stable clamping function
CN108568467A (en) * 2017-03-14 2018-09-25 吉林大学 A kind of stretch bending device of tyre of limitation rail vehicle top bow lateral bending
CN108568467B (en) * 2017-03-14 2021-01-26 吉林大学 Stretch bending tire device for limiting side bending of curved beam of railway vehicle roof

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Application publication date: 20111019