CN103231001A - Performing die for precisely forging large-scaled moving contact - Google Patents
Performing die for precisely forging large-scaled moving contact Download PDFInfo
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- CN103231001A CN103231001A CN2013100181498A CN201310018149A CN103231001A CN 103231001 A CN103231001 A CN 103231001A CN 2013100181498 A CN2013100181498 A CN 2013100181498A CN 201310018149 A CN201310018149 A CN 201310018149A CN 103231001 A CN103231001 A CN 103231001A
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Abstract
The invention discloses a performing die for precisely forging a large-scaled moving contact. The performing die comprises a die holder (10), a male die and a female die, and is characterized in that the female die is arranged on the die holder (10); a female die outer ring (8), a female die cylinder (7) and a female die core (9) are arranged from outside in; the female die core (9) is embedded in the middle at the upper section of the die holder (10); the male die (6) is arranged in an inner cavity (12) of the female die cylinder (7); and the inner cavity (12) of the female die cylinder (7), a mesopore (14) of the female die core (9) and a taper groove in the upper end surface of the female die core (9), and a mesopore of the die holder (10) form a blank flowing space. The structure arrangement of the die can enable material filling to be sufficient and material flowing distributing to be reasonable during the performing process accurately, the blank is enabled to be compact in structure and high in rigidity through cold precision forging in the die, the conductivity is good, and the silver plating performance, the pulling resistance and the galling resistance can reach high level.
Description
Technical field
The present invention relates to the fine forging technology field, be specifically related to the precision forging die of one of a kind of important conductive member that uses at high-voltage switch gear large-scale moving contact.
Background technology
The high-voltage switch gear components and parts of using in China's high voltage power transmission and transforming industry, to 1,000,000 volts the safe operation up till now of hundreds of thousands volt, because its structural change of each side reason is very big, performance difference is also very big by several ten thousand volts.Especially moving contact class conductive devices complex structure dimension precision requirement height not only, and require also higher to the density of material.Large-scale moving contact sectional dimension changes greatly, and length overall is 380mm, and small end Φ 50mmX293.5mm holds Φ 116mmX86.5mm greatly, and material is T2 copper.Extrude rod with Φ 120mm when this part initial stage manufactures experimently, sawing forms by machined, and the materials processing surplus is big, and stock utilization is low.In small lot when trial-production, adopted the processing of open die forging base, but exist the forging stock both ends of the surface that darker irregular depression is arranged, and the forging stock body is inconsistent but also none more unified machining benchmark not only, follow-up process for machining be difficult to unanimity and allowance bigger, also uneconomical.
Summary of the invention
The invention technical problem to be solved provides a kind of material filling, rational preforming tool of flow distribution of making.
The invention is for solving the problems of the technologies described above, by the following technical solutions:
Large-scale moving contact precision forging preforming tool comprises die holder, punch and die, and described die is arranged on the die holder, is set to die outer ring, die tube and die plate insert from outside to inside, and die plate insert is embedded at die holder epimere middle part; Be provided with punch in the inner chamber of die tube; The mesopore of the inner chamber of die tube, the mesopore of die plate insert and upper surface conical socket, die holder constitutes the blank flowing space.
Be better implement the invention, described punch upper end connects the punch stop collar.
Be better implement the invention, described punch can slide along inner chamber.
Be better implement the invention, described punch lower end is provided with projection, and snag axis is to the moving contact head internal taper hole axial cross section form fit of cross sectional shape and preformed forging stock.
Be better implement the invention, the axial cross section form fit of the moving contact head of described conical socket axial cross section shape and preformed forging stock and the movable contact rod portion transition conical surface.
Be better implement the invention, the axial cross section form fit of the axial cross section shape of the mesopore combination of the mesopore of described die plate insert and die holder and the movable contact rod portion of preformed forging stock.
Blank is pre-formed into the elongated movable contact rod of end portion in the preform mould, an end moving contact head, and bar portion and head conical surface transition have internal taper hole in the head, and profile is as the forging stock of the grenade of bar portion lengthening.
Owing to adopted technique scheme, the invention to have following beneficial effect:
1, carry out cold closed-die forging in mould and can make blank dense structure hardness height, conduct electricity very well, silver-plated performance and anti-plug tension hair performance all reach higher level.
2, through the preform cold closed-die forging, utilize the flow harden effect of aximal deformation value to improve bar portion hardness, make product hardness value HB 〉=80, solved the hardness problem that other technologies are difficult to guarantee; Guaranteed metallic fiber simultaneously by the product shape continuous distributed, forging stock density and body uniformity height, intensity improves, and improve service life.
Description of drawings
Fig. 1 is the middle forging stock structural representation that forms after the blank preformed;
Fig. 2 is preforming tool figure;
The specific embodiment
In conjunction with Fig. 2, the large-scale moving contact precision forging preforming tool of present embodiment comprises die holder 10, punch and die, and die is arranged on the die holder 10, be set to die outer ring 8, die tube 7 and die plate insert 9 from outside to inside, die plate insert 9 is embedded at die holder 10 epimeres middle part; Be provided with punch 6 in the inner chamber 12 of die tube 7, the punch upper end connects punch stop collar 5; The mesopore 15 of the inner chamber 12 of die tube 7, the mesopore 14 of die plate insert 9 and upper surface conical socket 13, die holder 10 constitutes the blank flowing space.
Blank is put into the preformed of preform mould, and all surfaces was smeared extruding oil before blank was gone into mould.Punch 6 is out of shape the formation preform forging that flows along inner chamber 12 to lower slider extruded stock spare.The moving contact head internal taper hole 4 axial cross section form fit of punch lower end projection 11 axial cross section shapes and preformed forging stock; The moving contact head of conical socket 13 axial cross section shapes and preformed forging stock and the axial cross section form fit of the movable contact rod portion transition conical surface; The axial cross section form fit of the axial cross section shape of mesopore 15 combinations of the mesopore 14 of die plate insert 9 and die holder 10 and the movable contact rod portion of preformed forging stock.
Forging stock in the middle of forging after the preformed is called, as Fig. 1, middle forging stock one end is elongated movable contact rod portion 1, one end is moving contact head 3, movable contact rod portion and moving contact head adopt the conical surface 2 transition, form internal taper hole 4, the grenade that middle forging stock monnolithic case lengthens as bar portion in the moving contact head.
Wherein, cold extrusion, flow harden effect have guaranteed that the hardness of bar portion satisfies the drawing requirement.The structure setting of mould can make accurately that material filling in the preform process is abundant, flow distribution is reasonable, makes the back product shape that is shaped eventually relatively more consistent, simplifies back processing.The preform mold materials is selected the spending expense that practices every conceivable frugality for use when satisfying structural strength, reasonable combination is used mold materials, improves die life, the effect that reduces production costs, thus better improve the cold closed-die forging end product quality.
Claims (6)
1. large-scale moving contact precision forging preforming tool, comprise die holder (10), punch and die, it is characterized in that: described die is arranged on the die holder (10), be set to die outer ring (8), die tube (7) and die plate insert (9) from outside to inside, die plate insert (9) is embedded at die holder (10) epimere middle part; Be provided with punch (6) in the inner chamber (12) of die tube (7); The mesopore (15) of the inner chamber (12) of die tube (7), the mesopore (14) of die plate insert (9) and upper surface conical socket (13), die holder (10) constitutes the blank flowing space.
2. large-scale moving contact precision forging preforming tool according to claim 1 is characterized in that: described punch upper end connection punch stop collar (5).
3. large-scale moving contact precision forging preforming tool according to claim 1, it is characterized in that: described punch (6) can slide along inner chamber (12).
4. large-scale moving contact precision forging preforming tool according to claim 1, it is characterized in that: described punch lower end is provided with projection (11), moving contact head (3) internal taper hole (4) the axial cross section form fit of projection (11) axial cross section shape and preformed forging stock.
5. large-scale moving contact precision forging preforming tool according to claim 1 is characterized in that: the axial cross section form fit of the moving contact head (3) of described conical socket (13) axial cross section shape and preformed forging stock and movable contact rod portion (1) the transition conical surface.
6. large-scale moving contact precision forging preforming tool according to claim 1 is characterized in that: the axial cross section form fit of the axial cross section shape of mesopore (15) combination of the mesopore (14) of described die plate insert (9) and die holder (10) and the movable contact rod portion (1) of preformed forging stock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100181498A CN103231001A (en) | 2013-01-18 | 2013-01-18 | Performing die for precisely forging large-scaled moving contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100181498A CN103231001A (en) | 2013-01-18 | 2013-01-18 | Performing die for precisely forging large-scaled moving contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103231001A true CN103231001A (en) | 2013-08-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100181498A Pending CN103231001A (en) | 2013-01-18 | 2013-01-18 | Performing die for precisely forging large-scaled moving contact |
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| CN (1) | CN103231001A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174801A (en) * | 2014-08-11 | 2014-12-03 | 贵州航天新力铸锻有限责任公司 | Device for forging nuclear power hydraulic damper cylinder |
| CN103691863B (en) * | 2013-12-18 | 2015-09-02 | 瑞安市永明电工合金厂 | The special multiple press of rectangular strap translot silver alloy contact blank |
| CN105013848A (en) * | 2015-08-04 | 2015-11-04 | 常熟市金华机械股份有限公司 | Continuous cold extruding device for asymmetric splines |
| CN105880308A (en) * | 2016-05-13 | 2016-08-24 | 河南平高电力设备有限公司 | Two-time extruding die of moving contact and secondary-extruding die thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141380A (en) * | 1995-11-22 | 1997-06-03 | Honda Motor Co Ltd | Method and device for forging of bevel gear |
| CN2885442Y (en) * | 2006-02-15 | 2007-04-04 | 北京机电研究所 | Axle sleeve extruding die |
| CN101332488A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging technique of gear shaft |
| CN101722265A (en) * | 2009-11-03 | 2010-06-09 | 中国船舶重工集团公司第七二五研究所 | Precision forging die for complex cylindrical titanium alloy forged piece |
| CN202097345U (en) * | 2011-06-20 | 2012-01-04 | 重庆创精温锻成型有限公司 | Hot forging mould for auto automatic transmission output spline shaft |
| CN202137312U (en) * | 2011-06-20 | 2012-02-08 | 重庆创精温锻成型有限公司 | Cold-extrusion die for output spline shaft of automobile automatic transmission |
| CN203124619U (en) * | 2013-01-18 | 2013-08-14 | 洛阳秦汉冷锻有限公司 | Large moving contact close-tolerance forging performing mould |
-
2013
- 2013-01-18 CN CN2013100181498A patent/CN103231001A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141380A (en) * | 1995-11-22 | 1997-06-03 | Honda Motor Co Ltd | Method and device for forging of bevel gear |
| CN2885442Y (en) * | 2006-02-15 | 2007-04-04 | 北京机电研究所 | Axle sleeve extruding die |
| CN101332488A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging technique of gear shaft |
| CN101722265A (en) * | 2009-11-03 | 2010-06-09 | 中国船舶重工集团公司第七二五研究所 | Precision forging die for complex cylindrical titanium alloy forged piece |
| CN202097345U (en) * | 2011-06-20 | 2012-01-04 | 重庆创精温锻成型有限公司 | Hot forging mould for auto automatic transmission output spline shaft |
| CN202137312U (en) * | 2011-06-20 | 2012-02-08 | 重庆创精温锻成型有限公司 | Cold-extrusion die for output spline shaft of automobile automatic transmission |
| CN203124619U (en) * | 2013-01-18 | 2013-08-14 | 洛阳秦汉冷锻有限公司 | Large moving contact close-tolerance forging performing mould |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691863B (en) * | 2013-12-18 | 2015-09-02 | 瑞安市永明电工合金厂 | The special multiple press of rectangular strap translot silver alloy contact blank |
| CN104174801A (en) * | 2014-08-11 | 2014-12-03 | 贵州航天新力铸锻有限责任公司 | Device for forging nuclear power hydraulic damper cylinder |
| CN105013848A (en) * | 2015-08-04 | 2015-11-04 | 常熟市金华机械股份有限公司 | Continuous cold extruding device for asymmetric splines |
| CN105013848B (en) * | 2015-08-04 | 2017-12-29 | 常熟市金华机械股份有限公司 | A kind of asymmetric spline continuous cold extrusion equipment |
| CN105880308A (en) * | 2016-05-13 | 2016-08-24 | 河南平高电力设备有限公司 | Two-time extruding die of moving contact and secondary-extruding die thereof |
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Application publication date: 20130807 |