CN105817504A - Bending method for producing special-shaped part of bucket side plate of U-shaped bucket dumper by using high-strength steel plate - Google Patents
Bending method for producing special-shaped part of bucket side plate of U-shaped bucket dumper by using high-strength steel plate Download PDFInfo
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- CN105817504A CN105817504A CN201610371880.2A CN201610371880A CN105817504A CN 105817504 A CN105817504 A CN 105817504A CN 201610371880 A CN201610371880 A CN 201610371880A CN 105817504 A CN105817504 A CN 105817504A
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- Prior art keywords
- bending
- plate
- shaped
- die
- strength steel
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
-
- 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
Abstract
The invention discloses a bending method for producing a special-shaped part of a bucket side plate of a U-shaped bucket dumper by using a high-strength steel plate. According to the bending method, a board is bent, processed and formed for three times by adopting specially-produced upper die and lower die, wherein the specially-produced upper die comprises a die head and a die shank; the die shank and the die head are connected by a connecting seat; a plurality of thread adjusting lead screws are arranged on the connecting seat; roller seats are arranged at the front ends of the lead screws; a plurality of rollers are arranged on the roller seats; the specially-produced lower die is provided with a die holder; and a bent V-shaped groove is formed in the upper surface of the die holder. The bending method comprises the following steps of mounting the upper die and the lower die on a numerical control bender; and then discharging, determining three bending parts, bending at the first part, bending at the third part, bending at the second part, demolding and forming. According to the bending method disclosed by the invention, the problems of high welding, splicing and processing cost, complex process, low production efficiency and the like of the bucket side plate of an existing U-shaped bucket dumper are solved; and the bending method is mainly used for bending, forming and processing the bucket side plate of the U-shaped bucket dumper.
Description
Technical field
The present invention relates to machine components process technology, specifically high-strength steel sheet and produce the bending method of U-shaped bucket dumper wagon box side plate shaped piece.
Background technology
The structure of the wagon box side plate of U-shaped bucket dumper sees Fig. 1, and its front end is the quadrilateral structure of a Guan Bi, and rear portion is a long straight tailgate, and one of process technology method of existing wagon box side plate is to be bent into two parts, sees Fig. 2,
Then welding completes, and its shortcoming is: cumbersome, and production efficiency is low, and welding cost is high, and technical operation requires height, affects conforming product rate, the most unsightly.For this kind of, there is the mode of production that Guan Bi frame-shaped construction also has the two of employing method, it is the opening part (such as Fig. 3) being first bent into definite shape, repeatedly press (seeing Fig. 4-7) on flat-die the most again, utilize the elasticity of steel, plastification, reach the closure effect of part opening.But second method is for high-strength steel sheet, springback capacity is relatively big, is extremely difficult to the Guan Bi of part, its process very complicated, dangerous high, inefficiency, and part shape machine is irregular, and concordance is poor, is little to reach to seal requirement.Particularly true for using high-strength steel sheet to produce U-shaped bucket dumper wagon box side plate.
Summary of the invention
Present invention aim to solve existing high-strength steel sheet produce wagon box side plate and use method two cannot realize shaped as frame Guan Bi, use method one cumbersome, productivity ratio is low, and production cost is high, the entirety problem such as unsightly.A kind of high-strength steel sheet is provided to produce the bending method of U-shaped bucket dumper wagon box side plate shaped piece.
The concrete scheme of the present invention is: a kind of high-strength steel sheet produces the bending method of U-shaped bucket dumper wagon box side plate shaped piece, it is to use special upper and lower mould, by three times, plate is carried out Bending Processing, it is characterized in that: described special upper mold includes die head and die shank, die shank connects by being connected seat with die head, on seat, some threaded adjusting screw mandrels are installed connecting, the front end of screw mandrel, equipped with roller mount, roller mount is provided with some rollers；Described special lower mold has die holder, and the upper surface of die holder is shaped with bending " V " type groove；Above-mentioned upper and lower mould is installed on stamping machine；Carry out Bending Processing the most as follows:
The first step: take high-strength steel sheet, according to product design measure；
Second step: according to wagon box side plate sheet-shaped design by determining the first bending part, the second bending part, the 3rd bending part after forward direction successively on plate；
3rd step: put into by plate between upper and lower mould, makes upper mold die head alignment plate the first bending part carry out bending, appropriateness excess bending, after making plate depart from upper and lower mould, returns to design bending angle；
4th step: in same upper and lower mould, pushes away before plate, makes the 3rd bending part of upper mold die head alignment plate carry out bending, appropriateness excess bending, after making plate depart from upper and lower mould, returns to design bending angle；
5th step: in same set of upper and lower mould, plate is retreated, upper mold die head is made to be directed at the second bending part, and make the top mould of long tail end of plate connect the roller side layout of seat, make roller move forward and backward correct position according to the coefficient of elasticity adjusting screw of plate, so that reaching desirable flexural variable during plate bending, start numerical control bender, carrying out bending, and appropriateness excess bending, the long tail end of plate abuts in flexural deformation therewith on roller；Taking off shaping plate from upper and lower mould, the long tail end of plate recovers straight under elastic reaction, and the leading portion of plate is bent into tetragon because of three times, bonded to each other under elastic reaction in the middle part of the head foremost of plate and plate.
Heretofore described high-strength steel sheet draws and pushes away intensity=1350MPa。
" V " type groove angle in heretofore described lower mold is 30 °.
In heretofore described upper mold, the top of die head is T-shaped structure has T-slot on seat connecting, and the dress that is connected with the T-slot being connected on seat of the T-shaped structure on die head is integrated；Being provided with some bolts hole on seat connecting, use bolt to be connected with die shank through bolt hole from T-slot, dress is integrated with being connected seat to make die shank.
Being furnished with demoulding block in the present invention and be installed on numerical control bender, demoulding block is that the tail end of corresponding workpiece is arranged.
The present invention makes full use of the elasticity of high-strength steel sheet, and the part making part interference with Bending Mould produces enough elastic deformations, thus does not affect the bending deformation at other positions；After whole bendings complete, it is again by elastic return original state, reaches the Guan Bi of part opening, disposably completes to close the bending of part.
Compared with prior art, the invention has the beneficial effects as follows: achieve the body formula bending and forming of Guan Bi part, decrease the time become a useful person of former welding, and part shape is regular, concordance is good, without dangerous, efficiency is high (being 8-10 times of commonsense method), can meet the demand produced in enormous quantities；Mould structure is simple, with low cost, and versatility is high.
Accompanying drawing explanation
Fig. 1 is the front view of U-shaped bucket dumper wagon box side plate；
Fig. 2 is the welding structure principle front view of existing method one；
Fig. 3-7 is the bending and forming Principle of Process schematic diagram of existing method two；
Fig. 8 is upper die structure front view；
Fig. 9 is upper die structure left view；
Figure 10 is the operation chart of the inventive method bending step the 3rd step；
Figure 11 is the operation chart of the inventive method bending step the 4th step；
Figure 12 is the operation chart of the inventive method bending step the 5th step；
Figure 13-15 is the stripping operation schematic diagram in inventive method bending step the 5th step；
Figure 16 is die head, die shank and the assembling structural representation connecting seat.
In figure: 1-wagon box side plate, 2-die shank, 3-connects seat, and 4-regulates screw mandrel, 5-roller, 6-roller mount, 7-die head, 8-" V " type groove, 9-die holder, 10-demoulding block, 11-bolt, 12-bolt hole, 13-T shape groove, 14-T shape structure, 15-the first bending part, 16-the second bending part, 17-the 3rd bending part.
Detailed description of the invention
The bending method using high-strength steel sheet to produce U-shaped bucket dumper wagon box side plate 1 shaped piece is: first make a set of upper and lower, mould, described special upper mold includes that (seeing Fig. 8) has die head 7 and die shank 2, die shank 2 connects by being connected seat 3 with die head 7, on seat 3, some threaded adjusting screw mandrels 4 are installed connecting, the front end of screw mandrel, equipped with roller mount 6, roller mount 6 is provided with five rollers 5 of a row；Described special lower mold (seeing Figure 12) has die holder 9, and the upper surface of die holder 9 is shaped with bending " V " type groove 8；Above-mentioned upper and lower mould is installed on numerical control bender；Carry out Bending Processing the most as follows:
The first step: take high-strength steel sheet, according to product design measure；
Second step: according to wagon box side plate 1 sheet-shaped design by determining the first bending part 15 after forward direction successively on plate, the second bending part 16, the 3rd bending part 17(sees Fig. 1)；
3rd step: put into by plate between upper and lower mould, makes upper mold die head 7 be directed at plate the first bending part and carries out bending, appropriateness excess bending, after making plate depart from upper and lower mould, return to design bending angle；(seeing Figure 10)
4th step: in same upper and lower mould, pushes away before plate, makes the 3rd bending part of upper mold 7 die head alignment plate carry out bending, appropriateness excess bending, after making plate depart from upper and lower mould, returns to design bending angle；(seeing Figure 11)
5th step: in same set of upper and lower mould, plate is retreated, upper mold die head is made to be directed at the second bending part, (seeing Figure 12) roller 5 side making the top mould of long tail end of plate connect seat 3 are arranged, regulate screw mandrel 4 according to the coefficient of elasticity of plate and make roller 5 move forward and backward correct position, so that reaching desirable flexural variable during plate bending, start numerical control bender, carrying out bending, and appropriateness excess bending, the long tail end of plate abuts in flexural deformation therewith on roller 5；Shaping plate (seeing Figure 13-15) is taken off from upper and lower mould, the long tail end of plate recovers straight under elastic reaction, and the leading portion of plate is bent into tetragon because of three times, in the middle part of the head foremost of plate and plate bonded to each other under elastic reaction, (seeing Figure 15) ultimately forms the wagon box side board structure of entirety.
High-strength steel sheet tensile strength described in the present embodiment=1350MPa。
Described in the present embodiment, the top of the die head 7 in upper mold is T-shaped structure 14, has T-slot 13 connecting on seat 3, and the dress that is connected with the T-slot 13 being connected on seat 3 of the T-shaped structure 14 on die head is integrated；Being provided with some bolts hole 12 on seat 3 connecting, use bolt 11 to be connected with die shank 2 through bolt hole 12 from T-slot 13, dress is integrated with being connected seat to make die shank, sees Figure 16.
Being furnished with demoulding block 10 in the present embodiment and be installed on numerical control bender, demoulding block 10 is that the tail end of corresponding workpiece wagon box side plate 1 is arranged, sees Figure 13.
Claims (5)
1. high-strength steel sheet produces the bending method of U-shaped bucket dumper wagon box side plate shaped piece, it is to use special upper and lower mould, by three times, plate is carried out Bending Processing, it is characterized in that: described special upper mold include die head and, connect by being connected seat with die head, on seat, some threaded adjusting screw mandrels are installed connecting, the front end of screw mandrel, equipped with roller mount, roller mount is provided with some rollers；Described special lower mold has die holder, and the upper surface of die holder is shaped with bending " V " type groove；Above-mentioned upper and lower mould is installed on numerical control bender；Carry out Bending Processing the most as follows:
The first step: take high-strength steel sheet, according to product design measure；
Second step: according to wagon box side plate sheet-shaped design by determining the first bending part, the second bending part, the 3rd bending part after forward direction successively on plate；
3rd step: put into by plate between upper and lower mould, makes upper mold die head alignment plate the first bending part carry out bending, appropriateness excess bending, after making plate depart from upper and lower mould, returns to design bending angle；
4th step: in same upper and lower mould, pushes away before plate, makes the 3rd bending part of upper mold die head alignment plate carry out bending, appropriateness excess bending, after making plate depart from upper and lower mould, returns to design bending angle；
5th step: in same set of upper and lower mould, plate is retreated, upper mold die head is made to be directed at the second bending part, and make the top mould of long tail end of plate connect the roller side layout of seat, make roller move forward and backward correct position according to the coefficient of elasticity adjusting screw of plate, so that reaching desirable flexural variable during plate bending, start numerical control bender, carrying out bending, and appropriateness excess bending, the long tail end of plate abuts in flexural deformation therewith on roller；Taking off shaping plate from upper and lower mould, the long tail end of plate recovers straight under elastic reaction, and the leading portion of plate is bent into tetragon because of three times, bonded to each other under elastic reaction in the middle part of the head foremost of plate and plate.
High-strength steel sheet the most according to claim 1 produces the bending method of U-shaped bucket dumper wagon box side plate shaped piece, it is characterized in that: described high-strength steel sheet tensile strength=1350MPa。
High-strength steel sheet the most according to claim 1 produces the bending method of U-shaped bucket dumper wagon box side plate shaped piece, it is characterized in that: " V " type groove angle in described lower mold is 30 °.
High-strength steel sheet the most according to claim 1 produces the bending method of U-shaped bucket dumper wagon box side plate shaped piece, it is characterized in that: in described upper mold, the top of die head is T-shaped structure has T-slot on seat connecting, and the dress that is connected with the T-slot being connected on seat of the T-shaped structure on die head is integrated；Being provided with some bolts hole on seat connecting, use bolt to be connected with die shank through bolt hole from T-slot, dress is integrated with being connected seat to make die shank.
High-strength steel sheet the most according to claim 1 produces the bending method of U-shaped bucket dumper wagon box side plate shaped piece, it is characterized in that: be furnished with demoulding block and be installed on numerical control bender, and demoulding block is that the tail end of corresponding workpiece is arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610371880.2A CN105817504B (en) | 2016-05-31 | 2016-05-31 | The bending method of the U-shaped bucket dumper wagon box side plate shaped piece of high-strength steel sheet production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610371880.2A CN105817504B (en) | 2016-05-31 | 2016-05-31 | The bending method of the U-shaped bucket dumper wagon box side plate shaped piece of high-strength steel sheet production |
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| CN105817504A true CN105817504A (en) | 2016-08-03 |
| CN105817504B CN105817504B (en) | 2017-07-18 |
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| CN201610371880.2A Active CN105817504B (en) | 2016-05-31 | 2016-05-31 | The bending method of the U-shaped bucket dumper wagon box side plate shaped piece of high-strength steel sheet production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999633A (en) * | 2018-01-16 | 2018-05-08 | 广州市天钻不锈钢厨房科技有限公司 | A kind of stainless steel cupboard plates depth U-shaped bending tool |
Citations (7)
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| JPH01162522A (en) * | 1987-12-18 | 1989-06-27 | Nakao Giken Kogyo:Kk | Forming method for corner round square cylindrical body |
| US5775162A (en) * | 1997-05-30 | 1998-07-07 | Ward; Raymond L. | Method and apparatus for forming sheet metal ducts |
| US20060037378A1 (en) * | 2004-08-17 | 2006-02-23 | Jin-Chu Lu | Method for folding and curving of a metallic plate |
| CN102380525A (en) * | 2011-10-25 | 2012-03-21 | 佛山市正鑫隆电器实业有限公司 | Numerically controlled bending method of superlong and superhigh sheet metal part |
| CN104438489A (en) * | 2014-12-24 | 2015-03-25 | 安徽长江机床制造（集团）有限公司 | Door frame, door frame bending die and bending method |
| CN204220792U (en) * | 2014-11-14 | 2015-03-25 | 苏州市冯氏钣金有限公司 | A kind of bender |
| CN104815905A (en) * | 2015-04-20 | 2015-08-05 | 江苏大明精密钣金有限公司 | Bending mold of closed arc part and process thereof |
-
2016
- 2016-05-31 CN CN201610371880.2A patent/CN105817504B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01162522A (en) * | 1987-12-18 | 1989-06-27 | Nakao Giken Kogyo:Kk | Forming method for corner round square cylindrical body |
| US5775162A (en) * | 1997-05-30 | 1998-07-07 | Ward; Raymond L. | Method and apparatus for forming sheet metal ducts |
| US20060037378A1 (en) * | 2004-08-17 | 2006-02-23 | Jin-Chu Lu | Method for folding and curving of a metallic plate |
| CN102380525A (en) * | 2011-10-25 | 2012-03-21 | 佛山市正鑫隆电器实业有限公司 | Numerically controlled bending method of superlong and superhigh sheet metal part |
| CN204220792U (en) * | 2014-11-14 | 2015-03-25 | 苏州市冯氏钣金有限公司 | A kind of bender |
| CN104438489A (en) * | 2014-12-24 | 2015-03-25 | 安徽长江机床制造（集团）有限公司 | Door frame, door frame bending die and bending method |
| CN104815905A (en) * | 2015-04-20 | 2015-08-05 | 江苏大明精密钣金有限公司 | Bending mold of closed arc part and process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999633A (en) * | 2018-01-16 | 2018-05-08 | 广州市天钻不锈钢厨房科技有限公司 | A kind of stainless steel cupboard plates depth U-shaped bending tool |
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| CN105817504B (en) | 2017-07-18 |
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Denomination of invention: Production method of U-shaped steel plate with high strength for dump truck body Effective date of registration: 20201104 Granted publication date: 20170718 Pledgee: Huangshi City Development Investment Group Co., Ltd Pledgor: HUBEI TRI-RING METALFORMING EQUIPMENT Co.,Ltd. Registration number: Y2020980007568 |