CN103192015B - Automotive alternator claw-pole closed-type hot-forging device and process thereof - Google Patents
Automotive alternator claw-pole closed-type hot-forging device and process thereof Download PDFInfo
- Publication number
- CN103192015B CN103192015B CN201310124076.0A CN201310124076A CN103192015B CN 103192015 B CN103192015 B CN 103192015B CN 201310124076 A CN201310124076 A CN 201310124076A CN 103192015 B CN103192015 B CN 103192015B
- Authority
- CN
- China
- Prior art keywords
- counterdie
- mandrel
- profile
- tooth
- blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Forging (AREA)
Abstract
The invention provides an automotive alternator claw-pole closed-type hot-forging device and a process thereof. The device comprises a toothed upper terrace die. The toothed upper terrace die is fixed on an upper die seat. A lower die is fixed on a lower die seat through a lower die fixing plate. A floating outer die is sleeved on the outer side of the lower die, and the bottom of the floating outer die is connected to the lower die fixing plate through a spring bearing the preload. A fixing seat is sleeved on the outer side of the floating outer die, and is fixed on the lower die seat through a screw. A core shaft bearing the backpressure is mounted in a central hole of the lower die. A limit block is mounted between the downward of the lower die seat and the core shaft, and the position of the core shaft in the lower die is controlled by the limit block. A central pin is inserted in central holes of the core shaft and the toothed upper terrace die and is used for positioning a blank and guaranteeing the size of a central hole of a forging. The process includes that an annular blank in a close die cavity is processed into a toothed intermediate part in a radial upsetting extrusion manner firstly, and then the toothed middleware is further turned to be a claw-pole forging part. The automotive alternator claw-pole closed-type hot-forging device has the advantages of simple processes, short production period, high material utilization, high product accuracy and the like.
Description
Technical field
The present invention relates to automobile claw pole fine forging technology field, particularly a kind of electric generators for automobile pawl pole enclosed hot forging forming device and technique.
Background technology
At present, the manufacturing process of electric generators for automobile pawl pole both domestic and external has heat, gentle cold die forging, generally all need the forming process that 5 ~ 9 independent, as blanking, heating, jumping-up, blocking, finish-forging, trimming etc., between these operations, also need to add some intermediate treatment, as annealing, phase transformation process and finishing etc., each operation all needs independent former, therefore pawl pole manufacture long-term existence complex procedures, the production cycle is long, the problem that stock utilization is low.
Along with increasingly sharpening of manufacturing industry competition, the product of efficient, precision, low consumption, high-quality has become the main flow pursuit that manufacturing industry improves competitive power of product.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of electric generators for automobile pawl pole enclosed hot forging forming device and technique, structure is simple, and claw pole forging can be once-forming, with short production cycle, and stock utilization is high, and Product Precision is high.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of electric generators for automobile pawl pole enclosed hot forging forming device, comprise profile of tooth upper male mould 12, profile of tooth upper male mould 12 and upper bolster are fixed, counterdie 7 is fixed by counterdie fixed head 10 and die shoe 9, the external mold 6 that floats is enclosed within the outside of counterdie 7, the bottom of floating external mold 6 is connected with counterdie fixed head 10 by the spring 11 bearing precompression, holder 4 is enclosed within the outside of floating external mold 6, fixed by screw and die shoe 9, the mandrel 8 bearing back pressure is contained in the centre bore of counterdie 7, limited block 13 is arranged on below die shoe 9 and between mandrel 8, the position of mandrel 8 in counterdie 7 is controlled by limited block 13, middle pin 5 is inserted in the centre bore of mandrel 8 and profile of tooth upper male mould 12, for locating blank and ensureing the size of forging centre bore.
Described holder 4, its stepped hole 4a, for limiting the position of floating external mold 6, can allow profile of tooth upper male mould 12 pass through simultaneously; The external cylindrical surface 6b of its endoporus 4b and floating external mold 6 coordinates.
Described floating external mold 6, its endoporus 6a coordinates with profile of tooth upper male mould 12, counterdie 7 and mandrel 8 and forms near closed hollow ring; Its profile 6b and holder 4 endoporus 4b coordinates.
Described counterdie 7, its standing part is ledge structure 7a, is fixed by counterdie fixed head 10 and die shoe 9; Blade tooth groove 7c on external cylindrical surface and floating external mold 6 coordinate the blade tooth die cavity being formed and close; Splitter box 7b leaves the top at blade tooth groove 7c, for retaining unnecessary blank; The centre bore 7d of counterdie 7, for placing mandrel 8; Toothed projections 7e and floating external mold 6 and profile of tooth upper male mould 12 coordinate, and control the flowing of blank in die cavity.
Described mandrel 8, its cylindrical step 8a and limited block 13 coordinate, and bear the position of mandrel 8 in counterdie 7 of back pressure for limiting the shaping initial stage; The centre bore 7d of face of cylinder 8b and counterdie 7 coordinates, for the intermediate lands of the claw pole forging 3 that is shaped; Pin 5 in the middle of placing in centre bore 8c, for positioning cylinder blank 1 and ensureing the size of claw pole forging 3 centre bore.
Described profile of tooth upper male mould 12, its standing part is ledge structure 12a, is used for fixing with upper bolster; Junction of the edges of two sheets of paper pin-and-hole 12b processes on ledge structure 12a, prevents profile of tooth upper male mould 12 from rotating in forming process; Toothed projections 12c and floating external mold 6 and counterdie 7 coordinate, and form near closed hollow ring, control the flowing of blank; Centre bore 12d is used for and middle pin 5 coordinates.
Described limited block 13, its inner surface is semi-circular shape 13a, and for coordinating with mandrel 8, the position of mandrel 8 in counterdie 7 in restriction forming process, at the end of shaping, takes off limited block 13, utilize mandrel 8 to eject claw pole forging 3.
Based on the forming technology of above a kind of electric generators for automobile pawl pole enclosed hot forging forming device, circular material blank 1 is first become profile of tooth middleware 2 by radial upsetting squeeze in the die cavity closed, and profile of tooth middleware 2 is shaped to claw pole forging 3 further, is specially:
1) pure iron or mild steel are placed on counterdie 7 after raw-material circular material blank 1 is heated to 1100 DEG C ~ 1200 DEG C;
2) profile of tooth upper male mould 12 is depressed, and after forming near closed hollow ring, is shaped to circular material blank 1 with floating external mold 6, counterdie 7 and mandrel 8, because mandrel 8 bears back pressure P2, shaping initial stage mould cavity pressure is less, and mandrel 8 stands fast, and circular material blank 1 is become profile of tooth middleware 2 by radial upsetting squeeze;
3) along with the further pressure of profile of tooth upper male mould 12, in die cavity, pressure durations increases, after being greater than the back pressure P2 that mandrel 8 bears, mandrel 8 is forced to retreat, blank flows in the centre bore 7d of counterdie 7, the material of profile of tooth middleware 2 toothed end is squeezed in the blade tooth groove 7c of counterdie 7, the external mold 6 that now floats is descending under the promotion of profile of tooth upper male mould 12, the downward frictional force of the external mold 6 pairs of blanks that float is utilized to promote the filling of blade tooth groove 7c, owing to bearing the effect of back pressure P2 in the whole forming process of mandrel 8 always, limit the flowing velocity of blank in counterdie 7 centre bore 7d, boss and the blade tooth of claw pole forging 3 are full of simultaneously, a small amount of blank to be squeezed in counterdie 7 in splitter box 7b, avoid the sharply rising of profile of tooth upper male mould 12 load p 1,
4) take off limited block 13, profile of tooth upper male mould 12 backhaul, utilize mandrel 8 to eject claw pole forging 3.
Advantage of the present invention: structure is simple, claw pole forging can be once-forming, with short production cycle, and stock utilization is high, and Product Precision is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of building mortion of the present invention.
Fig. 2 is the structural representation of holder 4 of the present invention.
Fig. 3 is that the present invention floats the structural representation of external mold 6.
Fig. 4 is the structural representation of counterdie 7 of the present invention.
Fig. 5 is the structural representation of mandrel 8 of the present invention.
Fig. 6 is the structural representation of profile of tooth upper male mould 12 of the present invention.
Fig. 7 is the structural representation of limited block 13 of the present invention.
Fig. 8 is present invention process flow chart.
Specific embodiments
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to Fig. 1, a kind of electric generators for automobile pawl pole enclosed hot forging forming device, comprise profile of tooth upper male mould 12, profile of tooth upper male mould 12 and upper bolster are fixed, counterdie 7 is fixed by counterdie fixed head 10 and die shoe 9, the external mold 6 that floats is enclosed within the outside of counterdie 7, the bottom of floating external mold 6 is connected with counterdie fixed head 10 by the spring 11 bearing precompression, holder 4 is enclosed within the outside of floating external mold 6, fixed by screw and die shoe 9, the mandrel 8 bearing back pressure is contained in the centre bore of counterdie 7, limited block 13 is arranged on below die shoe 9 and between mandrel 8, the position of mandrel 8 in counterdie 7 is controlled by limited block 13, middle pin 5 is inserted in the centre bore of mandrel 8 and profile of tooth upper male mould 12, for locating blank and ensureing the size of forging centre bore.
With reference to Fig. 2, described holder 4, its stepped hole 4a, for limiting the position of floating external mold 6, can allow profile of tooth upper male mould 12 pass through simultaneously; The external cylindrical surface 6b of its endoporus 4b and floating external mold 6 coordinates.
With reference to Fig. 3, described floating external mold 6, its endoporus 6a coordinates with profile of tooth upper male mould 12, counterdie 7 and mandrel 8 and forms near closed hollow ring; Its profile 6b and holder 4 endoporus 4b coordinates.
With reference to Fig. 4, described counterdie 7, its standing part is ledge structure 7a, is fixed by counterdie fixed head 10 and die shoe 9; Blade tooth groove 7c on external cylindrical surface and floating external mold 6 coordinate the blade tooth die cavity being formed and close; Splitter box 7b leaves the top at blade tooth groove 7c, for retaining unnecessary blank; The centre bore 7d of counterdie 7, for placing mandrel 8; Toothed projections 7e and floating external mold 6 and profile of tooth upper male mould 12 coordinate, and control the flowing of blank in die cavity.
With reference to Fig. 5, described mandrel 8, its cylindrical step 8a and limited block 13 coordinate, for limiting the position of shaping initial stage mandrel 8 in counterdie 7; The centre bore 7d of face of cylinder 8b and counterdie 7 coordinates, for the intermediate lands of the claw pole forging 3 that is shaped; Pin 5 in the middle of placing in centre bore 8c, for positioning cylinder blank 1 and ensureing the size of forging 3 centre bore.
With reference to Fig. 6, described profile of tooth upper male mould 12, its standing part is ledge structure 12a, is used for fixing with upper bolster; Junction of the edges of two sheets of paper pin-and-hole 12b processes on ledge structure 12a, prevents profile of tooth upper male mould 12 from rotating in forming process; Toothed projections 12c and floating external mold 6 and counterdie 7 coordinate, and form near closed hollow ring, control the flowing of blank; Centre bore 12d is used for and middle pin 5 coordinates.
With reference to Fig. 7, described limited block 13, its inner surface is semi-circular shape 13a, and for coordinating with mandrel, the position of mandrel in counterdie in restriction forming process, at the end of shaping, after taking off limited block 13, utilizes mandrel 8 to eject claw pole forging 3.
Based on the forming technology of above a kind of electric generators for automobile pawl pole enclosed hot forging forming device, with reference to Fig. 8, circular material blank 1 is first become profile of tooth middleware 2 by radial upsetting squeeze in the die cavity closed, and profile of tooth middleware 2 is shaped to claw pole forging 3 further, specifically:
1) pure iron or mild steel are placed on counterdie 7 after raw-material circular material blank 1 is heated to 1100 DEG C ~ 1200 DEG C;
2) profile of tooth upper male mould 12 is depressed, and after forming near closed hollow ring, is shaped to circular material blank 1 with floating external mold 6, counterdie 7 and mandrel 8, because mandrel 8 bears back pressure P2, shaping initial stage mould cavity pressure is less, and mandrel 8 stands fast, and circular material blank 1 is become profile of tooth middleware 2 by radial upsetting squeeze;
3) along with the further pressure of profile of tooth upper male mould 12, in die cavity, pressure durations increases, after being greater than the back pressure P2 that mandrel 8 bears, mandrel 8 is forced to retreat, in the centre bore 7d that blank flows into counterdie 7 and blade tooth groove 7c, be formed separately out intermediate lands and the blade tooth of claw pole forging 3, but the speed of the centre bore 7d of blank inflow counterdie 7 can lower than the speed flowing into blade tooth groove 7c under the effect of back pressure P2; The external mold 6 that now floats is descending under the promotion of profile of tooth upper male mould 12, utilizes the downward frictional force of the external mold 6 pairs of blanks that float to promote the filling of blade tooth groove 7c; Boss and the blade tooth of last claw pole forging 3 are full of simultaneously, and a small amount of blank to be squeezed in counterdie 7 in splitter box 7b, avoids the sharply rising of profile of tooth upper male mould 12 load p 1;
4) take off limited block 13, profile of tooth upper male mould 12 backhaul, utilize mandrel 8 to eject claw pole forging 3.
Claims (2)
1. an electric generators for automobile pawl pole enclosed hot forging forming device, comprise profile of tooth upper male mould (12), it is characterized in that: profile of tooth upper male mould (12) and upper bolster are fixed, counterdie (7) is fixed by counterdie fixed head (10) and die shoe (9), the external mold (6) that floats is enclosed within the outside of counterdie (7), the bottom of floating external mold (6) is connected with counterdie fixed head (10) by the spring (11) bearing precompression, holder (4) is enclosed within the outside of floating external mold (6), fixed by screw and die shoe (9), the mandrel (8) bearing back pressure is contained in the centre bore of counterdie (7), limited block (13) is arranged on below die shoe (9) and between mandrel (8), mandrel (8) position in counterdie (7) is controlled by limited block (13), middle pin (5) is inserted in the centre bore of mandrel (8) and profile of tooth upper male mould (12),
Described holder (4), its stepped hole (4a), for limiting the position of floating external mold (6), can allow profile of tooth upper male mould (12) pass through simultaneously; The external cylindrical surface (6b) of its endoporus (4b) and floating external mold (6) coordinates;
Described floating external mold (6), its endoporus (6a) coordinates with profile of tooth upper male mould (12), counterdie (7) and mandrel (8) and forms near closed hollow ring; Its profile (6b) and holder (4) endoporus (4b) coordinate;
Described counterdie (7), its standing part is ledge structure (7a), is fixed by counterdie fixed head (10) and die shoe (9); Blade tooth groove (7c) on external cylindrical surface and floating external mold (6) coordinate the blade tooth die cavity being formed and close; Splitter box (7b) leaves at the top of blade tooth groove (7c), for retaining unnecessary blank; The centre bore (7d) of counterdie (7), for placing mandrel (8); Toothed projections (7e) and floating external mold (6) and profile of tooth upper male mould (12) coordinate, and control the flowing of blank in die cavity;
Described mandrel (8), its cylindrical step (8a) and limited block (13) coordinate, for limiting the position of shaping initial stage mandrel (8) in counterdie (7); The centre bore (7d) of the face of cylinder (8b) and counterdie (7) coordinates, for the intermediate lands of the claw pole forging that is shaped (3); Pin (5) in the middle of placing in centre bore (8c), for positioning cylinder blank (1) and ensureing the size of claw pole forging (3) centre bore;
Described profile of tooth upper male mould (12), its standing part is ledge structure (12a), is used for fixing with upper bolster; Junction of the edges of two sheets of paper pin-and-hole 12b processes on ledge structure (12a), prevents profile of tooth upper male mould (12) from rotating in forming process; Toothed projections (12c) and floating external mold (6) and counterdie (7) coordinate, and form near closed hollow ring, control the flowing of blank; Centre bore (12d) is used for and middle pin (5) coordinates;
Described limited block (13), its inner surface is semi-circular shape (13a), for coordinating with mandrel (8), the position of mandrel (8) in counterdie (7) in restriction forming process, at the end of shaping, take off limited block (13), utilize mandrel (8) to eject claw pole forging (3).
2. the forming technology of a kind of electric generators for automobile pawl pole according to claim 1 enclosed hot forging forming device, it is characterized in that: cylinder blank (1) is first become profile of tooth middleware (2) by radial upsetting squeeze in the die cavity closed, profile of tooth middleware (2) is shaped to claw pole forging (3) further, is specially:
1) pure iron or mild steel are placed on counterdie (7) after raw-material cylinder blank (1) is heated to 1100 DEG C ~ 1200 DEG C;
2) profile of tooth upper male mould (12) pressure, after forming near closed hollow ring with floating external mold (6), counterdie (7) and mandrel (8), cylinder blank (1) is shaped, because mandrel (8) bears back pressure P2, shaping initial stage mould cavity pressure is little, mandrel (8) stands fast, and cylinder blank (1) is become profile of tooth middleware (2) by radial upsetting squeeze;
3) along with the further pressure of profile of tooth upper male mould (12), in die cavity, pressure durations increases, after being greater than the back pressure P2 that mandrel (8) bears, mandrel (8) is forced to retreat, blank flows in the centre bore (7d) of counterdie (7), the material of profile of tooth middleware (2) toothed end is squeezed into blade tooth groove (7c), the external mold (6) that now floats is descending under the promotion of profile of tooth upper male mould (12), the downward frictional force of external mold (6) to blank of floating is utilized to promote the filling of blade tooth groove (7c), because mandrel (8) bears the effect of back pressure P2, limit the flowing velocity of blank in counterdie (7) centre bore (7d), boss and the blade tooth of claw pole forging (3) are full of simultaneously, a small amount of blank is squeezed in the middle splitter box (7b) of counterdie (7), avoid the sharply rising of profile of tooth upper male mould (12) load p 1,
4) take off limited block (13), profile of tooth upper male mould (12) backhaul, utilize mandrel (8) to eject claw pole forging (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310124076.0A CN103192015B (en) | 2013-04-10 | 2013-04-10 | Automotive alternator claw-pole closed-type hot-forging device and process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310124076.0A CN103192015B (en) | 2013-04-10 | 2013-04-10 | Automotive alternator claw-pole closed-type hot-forging device and process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103192015A CN103192015A (en) | 2013-07-10 |
| CN103192015B true CN103192015B (en) | 2015-03-11 |
Family
ID=48714933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310124076.0A Active CN103192015B (en) | 2013-04-10 | 2013-04-10 | Automotive alternator claw-pole closed-type hot-forging device and process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103192015B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642695A (en) * | 2014-12-04 | 2016-06-08 | 汪超 | Die for manufacturing claw pole of automobile generator |
| CN105290291B (en) * | 2015-11-03 | 2017-09-19 | 江苏龙城精锻有限公司 | The enclosed blocking shaping dies and its technique of a kind of special-shaped oil injector body blank |
| CN106975720B (en) * | 2017-03-31 | 2018-10-02 | 西安建筑科技大学 | A kind of occlusion forging of step axis blank |
| CN106984751B (en) * | 2017-06-02 | 2019-01-08 | 湘潭大学 | A kind of the metalwork plate forging forming method and mold of the two-way protrusion of bottom belt |
| CN107433312B (en) * | 2017-09-11 | 2023-04-07 | 江苏龙城精锻集团有限公司 | High-pressure common rail pipe blank making mold and blank making method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139027A (en) * | 1995-06-26 | 1997-01-01 | 会田工程株式会社 | Plastic working method of gear-type parts |
| CN1258575A (en) * | 1999-12-29 | 2000-07-05 | 武进市龙城精锻有限公司 | Forming process for pawl pole of automobile generator |
| CN1772413A (en) * | 2005-10-28 | 2006-05-17 | 庄龙兴 | Pawl pole of automobile generator and its manufactura |
| CN101386120A (en) * | 2008-10-23 | 2009-03-18 | 海盐猛凌汽车配件有限公司 | Forming method of automobile generator claw pole |
| CN102179464A (en) * | 2011-03-25 | 2011-09-14 | 西安交通大学 | Process for forming generator claw pole of vehicle |
| CN203170891U (en) * | 2013-04-10 | 2013-09-04 | 西安建筑科技大学 | Closed hot forging forming device of generator claw pole for automobile |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3606566B2 (en) * | 2001-03-28 | 2005-01-05 | 株式会社加藤鐵工所 | Method for manufacturing rotor core for permanent magnet alternator |
| KR101094255B1 (en) * | 2009-04-29 | 2011-12-19 | 두루포징 주식회사 | A forging mold for manufacturing the rotor pole |
| JP5397396B2 (en) * | 2011-03-02 | 2014-01-22 | 株式会社デンソー | Manufacturing method of rotor core of rotating electrical machine |
-
2013
- 2013-04-10 CN CN201310124076.0A patent/CN103192015B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139027A (en) * | 1995-06-26 | 1997-01-01 | 会田工程株式会社 | Plastic working method of gear-type parts |
| CN1258575A (en) * | 1999-12-29 | 2000-07-05 | 武进市龙城精锻有限公司 | Forming process for pawl pole of automobile generator |
| CN1772413A (en) * | 2005-10-28 | 2006-05-17 | 庄龙兴 | Pawl pole of automobile generator and its manufactura |
| CN101386120A (en) * | 2008-10-23 | 2009-03-18 | 海盐猛凌汽车配件有限公司 | Forming method of automobile generator claw pole |
| CN102179464A (en) * | 2011-03-25 | 2011-09-14 | 西安交通大学 | Process for forming generator claw pole of vehicle |
| CN203170891U (en) * | 2013-04-10 | 2013-09-04 | 西安建筑科技大学 | Closed hot forging forming device of generator claw pole for automobile |
Non-Patent Citations (1)
| Title |
|---|
| "汽车发电机爪极闭式热锻一步成形工艺研究";杨程等;《锻压技术》;20110630;第36卷(第3期);第14-19页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103192015A (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103192015B (en) | Automotive alternator claw-pole closed-type hot-forging device and process thereof | |
| CN104308058B (en) | A kind of method of titanium alloy blade forging and molding | |
| CN203170891U (en) | Closed hot forging forming device of generator claw pole for automobile | |
| CN104907474A (en) | Aluminum alloy wheel forging forming technology | |
| CN103173597A (en) | Method for improving optional performances of large H13 steel hot-extrusion mould | |
| CN202591504U (en) | Wheel hub flashless precise forging die | |
| CN107671132B (en) | A kind of forming technology of speed torque-converters hub | |
| CN209614103U (en) | The blank mold structure of automobile engine using new energy resources gear shaft enclosed forging and forming | |
| CN202087757U (en) | Forging, expanding and forming die for aluminum alloy hub with complex structure | |
| CN102989143A (en) | Method for manufacturing golf club head | |
| CN109590426A (en) | The blank mold structure of automobile engine using new energy resources gear shaft enclosed forging and forming | |
| CN106825378A (en) | A kind of H types thin-walled diskware low load continuous and local incremental forming device and method | |
| CN201823865U (en) | Block inserting type forging die | |
| CN202655375U (en) | Novel warm-extrusion die | |
| CN103658500A (en) | Precise warm forging one-time forming new technology of straight tooth cylinder inner gear | |
| CN201720394U (en) | Hollow, large-scale and columnar sand core mould | |
| CN204365734U (en) | Hub bearing lasso cold extrusion die | |
| CN202779455U (en) | Flange structure molding die | |
| CN104493032A (en) | Axle flange forging process | |
| CN204565028U (en) | Two flange forge piece forming combination die | |
| CN102601240A (en) | Dowel screw forming die | |
| CN201676986U (en) | Tire mold upsetting device for continuous upset heads at two ends of long bar | |
| CN203817260U (en) | Combined type flange forming forging die | |
| CN209109993U (en) | A kind of enlarging die of expanding wheel rim | |
| CN102814450B (en) | Heavy main mode structure after a kind of built-in adjustable integral is anti- |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |