CN102284574A - Slug for causing car bumper with small bend radius to be arc - Google Patents
Slug for causing car bumper with small bend radius to be arc Download PDFInfo
- Publication number
- CN102284574A CN102284574A CN2011102376716A CN201110237671A CN102284574A CN 102284574 A CN102284574 A CN 102284574A CN 2011102376716 A CN2011102376716 A CN 2011102376716A CN 201110237671 A CN201110237671 A CN 201110237671A CN 102284574 A CN102284574 A CN 102284574A
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- Prior art keywords
- slug
- arc
- bend radius
- bumper
- outer link
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Abstract
The invention relates to a slug for causing a car bumper with a small bend radius to be arc, which is used for solving the problem of forming the car bumper with the small bend radius. The car bumper is formed by connecting a plurality of relatively rotary core sections; the slug is formed by connecting chains; each chain is composed of an outer link plate, an inner link plate and a pin roll, wherein the outer link plate and the pin roll form an interference fit; the inner link plate and the pin roll form a clearance fit; the core section is formed by the two pin rolls which pass through the outer link plates, the outer link plates, and wear-resisting layers which are clamped with the outer sides of the outer link plates. The slug provided by the invention has main characteristics that: a cutting force forced by a single thrust face is relative small due to increasing the thrust face, so that the slug is greater in a load; by saving a rotating part of a traditional trunnion, each core section becomes smaller in size in a length direction and the structure is tighter; a ratio of an arc forming surface is about more than 90% of the whole slug, therefore, the arc forming surface and the cavity of an arc forming piece are easy to fit and the slug is easier to be formed during a bend process.
Description
Technical field
The present invention relates to the online one-tenth arc of the bumper fuse of a kind of fuse, particularly small-bend radius, belong to the mechanically deform processing technique field.
Background technology
Become arc for the bumper with near closed hollow ring, no matter adopt any processing mode, when radius of the radian was too small, depression, defective workmanship such as wrinkling all can appear in the surface.For preventing this defective workmanship, need near closed hollow ring, insert fuse, the fuse profile is identical with the product cavity shape, and fuse is connected together by connector by a plurality of core joints.The core joint front end of using always is a monaural axle construction, and the rear end then is the binaural axis structure, and core joint in front and back connects by gudgeon, rotating shaft, and each core saves the certain angle that can rotate around the axis; In order to improve the durability of fuse, wear-resisting copper material parcel is adopted on the fuse top layer, as shown in Figure 3, Figure 4.The shortcoming of this conventional structure fuse is: owing to adopt gudgeon interconnection system fuse, each core joint length dimension all bigger, generally will be more than 70mm, the rotating shaft that can not participate in into arc on length partly accounts for the large percentage of whole fuse, account for about 50% of whole core joint, so less with the bumper intrados contact area that becomes arc when the less bumper of processing bending radius, moulding is difficult.
Summary of the invention
The present invention be used to solve above-mentioned prior art defective, a kind of compact conformation is provided, the bumper that participates in into the big small-bend radius of arc ratio becomes the arc fuse.
The alleged problem of the present invention solves by the following technical programs:
A kind of bumper of small-bend radius becomes the arc fuse, it is formed by connecting by a plurality of relatively turnable core joints, its special feature is: described fuse is formed by connecting by the chain that outer plate, inner plate and bearing pin constitute, wherein, outer plate and bearing pin interference fit, inner plate and bearing pin matched in clearance constitute core joint by two bearing pins, outer plates passing each outer plate and the wearing layer that is connected to its outside.
The bumper of above-mentioned small-bend radius becomes the arc fuse, and the wearing layer one or both ends of described each core joint are provided with 1 °-5 ° locking angle.
The bumper of above-mentioned small-bend radius becomes the arc fuse, and described bearing pin one end is provided with boss, and the other end is provided with screw.
The present invention is directed to existing bumper becomes arc processing to improve because of the problem that core joint structure causes processing the small-bend radius bumper with fuse, break through traditional connected mode of core internode gudgeon-rotating shaft, employing is similar to the chain ways of connecting each core joint is coupled together.Its main feature is as follows: 1. fuse is under the certain condition of suffered shearing force, because the increase of stress surface, make the suffered shearing force of single stress surface compare for a short time than conventional monaural axle-binaural axis connected mode institute is stressed, chain structure can bear bigger pulling force; 2. this structure has been saved the rotary part of traditional gudgeon, size decreases on each core joint length direction, structure is compact more, the ratio that can participate in into cambered surface accounts for more than 90% of total fuse, thereby make it and the easier applying of the inner chamber that becomes arc spare, easier moulding in BENDING PROCESS, be widely used in some inner chambers narrow and small, become the little bumper of arc radius to be shaped in the processing.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is existing gudgeon structural core minor structure schematic diagram;
Fig. 4 is the vertical view of Fig. 3.
Label is expressed as follows in the accompanying drawing: 1. fuse; 2. core saves; 3. wearing layer; 4. screw; 5. bearing pin, 6. outer plate; 7. inner plate; 8. boss.
The specific embodiment
Referring to Fig. 1, Fig. 2, fuse of the present invention adopts the structure of similar driving-chain, it is made of a plurality of outer plates 6, inner plate 7 and bearing pin 5, its connected mode is: outer plate passes first and second bearing pin, inner plate and passes second and the 3rd bearing pin, outer plate and pass the 3rd and the 4th bearing pin, inner plate again and pass the 4th and the 5th bearing pin again, and the like.Wherein, outer plate and bearing pin interference fit, inner plate and bearing pin matched in clearance.Two bearing pin outside clamping wearing layers 3 in that each outer plate passes constitute each core joint 2 thus.
Referring to Fig. 2,, be provided with 1 °-5 ° locking angle in the wearing layer one or both ends of each core joint according to the requirement of institute's processing bumper crooked radian.According to the processing requirement of strength that is shaped, interior outer plate can be provided with number row, and is shown in Figure 2, is provided with three rows.End at bearing pin 5 is provided with boss 8, and the other end is provided with screw 4.
Core internode of the present invention has adopted the chain-type connection, has broken through traditional gudgeon formula and has connected, and it is littler that the core joint can be done in the longitudinal direction, and structure is compact more, is easier to moulding for the bumper of crooked minor radius, and the material returned is easier.
Claims (3)
1. the bumper of a small-bend radius becomes the arc fuse, it is formed by connecting by a plurality of relatively turnable core joints, it is characterized in that: described fuse is formed by connecting by the chain that outer plate (6), inner plate (7) and bearing pin (5) constitute, wherein, outer plate and bearing pin interference fit, inner plate and bearing pin matched in clearance constitute the core joint by two bearing pins, outer plates passing each outer plate and the wearing layer (3) that is connected to its outside.
2. the bumper of small-bend radius according to claim 1 becomes the arc fuse, and the wearing layer one or both ends of described each core joint are provided with 1 °-5 ° locking angle.
3. the bumper of small-bend radius according to claim 2 becomes the arc fuse, and described bearing pin one end is provided with boss (8), and the other end is provided with screw (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102376716A CN102284574A (en) | 2011-08-18 | 2011-08-18 | Slug for causing car bumper with small bend radius to be arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102376716A CN102284574A (en) | 2011-08-18 | 2011-08-18 | Slug for causing car bumper with small bend radius to be arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102284574A true CN102284574A (en) | 2011-12-21 |
Family
ID=45331480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102376716A Pending CN102284574A (en) | 2011-08-18 | 2011-08-18 | Slug for causing car bumper with small bend radius to be arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102284574A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201807A (en) * | 2018-09-14 | 2019-01-15 | 浙江万丰金马逊科技有限公司 | A kind of round tube bending forming gear chain type plug |
| CN109201806A (en) * | 2018-09-14 | 2019-01-15 | 浙江万丰金马逊科技有限公司 | A kind of rectangular tube bending forming gear chain type plug |
| CN111842660A (en) * | 2020-07-06 | 2020-10-30 | 昆山华致精密模具有限公司 | Forming die combination and forming process of double-camber bumper |
| CN112453136A (en) * | 2020-09-22 | 2021-03-09 | 成都飞机工业（集团）有限责任公司 | Core rod for push bending forming of small-bending-radius guide pipe and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52146759A (en) * | 1976-06-01 | 1977-12-06 | Setsuyou Koukan Kk | Core material for bending hollow material with slits |
| CN2832342Y (en) * | 2005-08-22 | 2006-11-01 | 十堰市风雷工贸有限公司 | Mandrel for manufacturing small curvature radius siphon die |
| CN102039336A (en) * | 2010-11-23 | 2011-05-04 | 凌云工业股份有限公司 | Core for arcing and processing of bumper |
| CN202290918U (en) * | 2011-08-18 | 2012-07-04 | 凌云工业股份有限公司 | Core for arching bumper with small bending radius |
-
2011
- 2011-08-18 CN CN2011102376716A patent/CN102284574A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52146759A (en) * | 1976-06-01 | 1977-12-06 | Setsuyou Koukan Kk | Core material for bending hollow material with slits |
| CN2832342Y (en) * | 2005-08-22 | 2006-11-01 | 十堰市风雷工贸有限公司 | Mandrel for manufacturing small curvature radius siphon die |
| CN102039336A (en) * | 2010-11-23 | 2011-05-04 | 凌云工业股份有限公司 | Core for arcing and processing of bumper |
| CN202290918U (en) * | 2011-08-18 | 2012-07-04 | 凌云工业股份有限公司 | Core for arching bumper with small bending radius |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201807A (en) * | 2018-09-14 | 2019-01-15 | 浙江万丰金马逊科技有限公司 | A kind of round tube bending forming gear chain type plug |
| CN109201806A (en) * | 2018-09-14 | 2019-01-15 | 浙江万丰金马逊科技有限公司 | A kind of rectangular tube bending forming gear chain type plug |
| CN111842660A (en) * | 2020-07-06 | 2020-10-30 | 昆山华致精密模具有限公司 | Forming die combination and forming process of double-camber bumper |
| CN111842660B (en) * | 2020-07-06 | 2022-06-07 | 昆山华致精密模具有限公司 | Forming die combination and forming process of double-camber bumper |
| CN112453136A (en) * | 2020-09-22 | 2021-03-09 | 成都飞机工业（集团）有限责任公司 | Core rod for push bending forming of small-bending-radius guide pipe and using method thereof |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111221 |