CN103192015A - 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
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- CN103192015A CN103192015A CN2013101240760A CN201310124076A CN103192015A CN 103192015 A CN103192015 A CN 103192015A CN 2013101240760 A CN2013101240760 A CN 2013101240760A CN 201310124076 A CN201310124076 A CN 201310124076A CN 103192015 A CN103192015 A CN 103192015A
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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 utmost point enclosed hot forging forming device and technology.
Background technology
At present, the manufacturing process of the electric generators for automobile pawl utmost point both domestic and external has heat, gentle cold die forging, generally all need 5～9 independent forming processes, as blanking, heating, jumping-up, blocking, finish-forging, side cut etc., also need to add some intermediate treatment between these operations, as annealing, phase transformation processing and finishing etc., each operation all needs independent former, so the pawl utmost point is made long-term existence and 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 utmost point enclosed hot forging forming device and technology, simple in structure, claw pole forging energy once-forming, with short production cycle, stock utilization height, product precision height.
In order to achieve the above object, the technical scheme taked of the present invention is:
A kind of electric generators for automobile pawl utmost point enclosed hot forging forming device, comprise punch 12 on the profile of tooth, punch 12 and upper bolster are fixed on the profile of tooth, counterdie 7 is fixing 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 unsteady external mold 6 is connected with counterdie fixed head 10 by the spring 11 that bears precompression, holder 4 is enclosed within the outside of the external mold 6 that floats, fixing by screw and die shoe 9, the mandrel 8 that bears back pressure is contained in the centre bore of counterdie 7, limited block 13 is installed between the following and mandrel 8 of die shoe 9, by limited block 13 positions of control mandrel 8 in counterdie 7, middle pin 5 is inserted in the centre bore of punch 12 on mandrel 8 and the profile of tooth, is used for the size to blank location and assurance forging centre bore.
Described holder 4, its stepped hole 4a are used for the float position of external mold 6 of restriction, can allow punch 12 passes through on the profile of tooth simultaneously; The external cylindrical surface 6b of its endoporus 4b and unsteady external mold 6 cooperates.
Described counterdie 7, its standing part are ledge structure 7a, and be fixing by counterdie fixed head 10 and die shoe 9; Blade tooth groove 7c on the external cylindrical surface and unsteady external mold 6 cooperate the blade tooth die cavity that forms sealing; Splitter box 7b leaves at the top of blade tooth groove 7c, is used for retaining unnecessary blank; The centre bore 7d of counterdie 7 is used for placing mandrel 8; Punch 12 cooperates on toothed projections 7e and unsteady external mold 6 and the profile of tooth, control blank flowing in die cavity.
Described mandrel 8, its cylindrical step 8a and limited block 13 cooperate, and bear the mandrel 8 of back pressure in the position of counterdie 7 for limiting the shaping initial stage; The centre bore 7d of face of cylinder 8b and counterdie 7 cooperates, and is used for the middle boss of shaping claw pole forging 3; Pin 5 in the middle of placing among the centre bore 8c is for the size that cylinder blank 1 is positioned and guarantees claw pole forging 3 centre bores.
Described limited block 13, its inner surface are semi-round ring shape 13a, are used for and mandrel 8 cooperations, and limited block 13 when finishing when being shaped, is taken off in the position of mandrel 8 in counterdie 7 in the restriction forming process, utilizes mandrel 8 to eject claw pole forging 3.
Based on the forming technology of above a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device, circular material blank 1 is earlier become profile of tooth middleware 2 by upsetting squeeze radially in the die cavity of sealing, and profile of tooth middleware 2 further is shaped to claw pole forging 3, is specially:
1) after being heated to 1100 ℃～1200 ℃ as raw-material circular material blank 1, pure iron or mild steel is placed on the counterdie 7;
2) punch 12 is depressed on the profile of tooth, behind unsteady external mold 6, counterdie 7 and mandrel 8 formation near closed hollow rings, circular material blank 1 is shaped, because mandrel 8 bears back pressure P2, shaping initial stage die cavity internal pressure is less, and mandrel 8 stands fast, and circular material blank 1 is become profile of tooth middleware 2 by upsetting squeeze radially;
3) further depressing along with punch on the profile of tooth 12, the die cavity internal pressure continues to increase, behind the back pressure P2 that bears greater than mandrel 8, mandrel 8 is forced to retreat, blank flows among the centre bore 7d of counterdie 7, the material of profile of tooth middleware 2 profile of tooth ends is squeezed among the blade tooth groove 7c of counterdie 7, the external mold 6 that floats this moment is descending under the promotion of punch on the profile of tooth 12, utilize the downward frictional force of the 6 pairs of blanks of external mold that float to promote the filling of blade tooth groove 7c, because the effect of always bearing back pressure P2 in the mandrel 8 whole forming processes, limited the flowing velocity of blank among the 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 counterdie 7 among the splitter box 7b, has avoided the rapid rising of punch 12 load p 1 on the profile of tooth;
4) take off limited block 13, punch 12 backhauls on the profile of tooth utilize mandrel 8 to eject claw pole forging 3.
Advantage of the present invention: simple in structure, claw pole forging energy once-forming, with short production cycle, stock utilization height, product precision height.
Description of drawings
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 the structural representation of the unsteady external mold 6 of the present invention.
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 punch 12 on the profile of tooth of the present invention.
Fig. 7 is the structural representation of limited block 13 of the present invention.
Fig. 8 is process chart of the present invention.
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 utmost point enclosed hot forging forming device, comprise punch 12 on the profile of tooth, punch 12 and upper bolster are fixed on the profile of tooth, counterdie 7 is fixing 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 unsteady external mold 6 is connected with counterdie fixed head 10 by the spring 11 that bears precompression, holder 4 is enclosed within the outside of the external mold 6 that floats, fixing by screw and die shoe 9, the mandrel 8 that bears back pressure is contained in the centre bore of counterdie 7, limited block 13 is installed between the following and mandrel 8 of die shoe 9, by limited block 13 positions of control mandrel 8 in counterdie 7, middle pin 5 is inserted in the centre bore of punch 12 on mandrel 8 and the profile of tooth, is used for the size to blank location and assurance forging centre bore.
With reference to Fig. 2, described holder 4, its stepped hole 4a are used for the float position of external mold 6 of restriction, can allow punch 12 passes through on the profile of tooth simultaneously; The external cylindrical surface 6b of its endoporus 4b and unsteady external mold 6 cooperates.
With reference to Fig. 3, described unsteady external mold 6, punch 12, counterdie 7 and mandrel 8 cooperate and form near closed hollow ring on its endoporus 6a and the profile of tooth; Its profile 6b and holder 4 endoporus 4b cooperate.
With reference to Fig. 4, described counterdie 7, its standing part are ledge structure 7a, and be fixing by counterdie fixed head 10 and die shoe 9; Blade tooth groove 7c on the external cylindrical surface and unsteady external mold 6 cooperate the blade tooth die cavity that forms sealing; Splitter box 7b leaves at the top of blade tooth groove 7c, is used for retaining unnecessary blank; The centre bore 7d of counterdie 7 is used for placing mandrel 8; Punch 12 cooperates on toothed projections 7e and unsteady external mold 6 and the profile of tooth, control blank flowing in die cavity.
With reference to Fig. 5, described mandrel 8, its cylindrical step 8a and limited block 13 cooperate, and are used for restriction shaping initial stage mandrel 8 in the position of counterdie 7; The centre bore 7d of face of cylinder 8b and counterdie 7 cooperates, and is used for the middle boss of shaping claw pole forging 3; Pin 5 in the middle of placing among the centre bore 8c is for the size that cylinder blank 1 is positioned and guarantees forging 3 centre bores.
With reference to Fig. 6, punch 12 on the described profile of tooth, and its standing part is ledge structure 12a, are used for fixing with upper bolster; Junction of the edges of two sheets of paper pin-and-hole 12b processing prevents that punch 12 rotates on the profile of tooth in forming process on ledge structure 12a; Toothed projections 12c and unsteady external mold 6 and counterdie 7 cooperate, and form near closed hollow ring, control flowing of blank; Centre bore 12d is used for and middle pin 5 cooperates.
With reference to Fig. 7, described limited block 13, its inner surface are semi-round ring shape 13a, be used for and mandrel cooperates, the position of mandrel in counterdie in the restriction forming process, when finishing when being shaped, take off limited block 13 after, utilize mandrel 8 to eject claw pole forging 3.
Based on the forming technology of above a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device, with reference to Fig. 8, circular material blank 1 is earlier become profile of tooth middleware 2 by upsetting squeeze radially in the die cavity of sealing, and profile of tooth middleware 2 further is shaped to claw pole forging 3, specifically:
1) after being heated to 1100 ℃～1200 ℃ as raw-material circular material blank 1, pure iron or mild steel is placed on the counterdie 7;
2) punch 12 is depressed on the profile of tooth, behind unsteady external mold 6, counterdie 7 and mandrel 8 formation near closed hollow rings, circular material blank 1 is shaped, because mandrel 8 bears back pressure P2, shaping initial stage die cavity internal pressure is less, and mandrel 8 stands fast, and circular material blank 1 is become profile of tooth middleware 2 by upsetting squeeze radially;
3) further depressing along with punch on the profile of tooth 12, the die cavity internal pressure continues to increase, behind the back pressure P2 that bears greater than mandrel 8, mandrel 8 is forced to retreat, blank flows among the centre bore 7d and blade tooth groove 7c of counterdie 7, be formed separately out middle boss and the blade tooth of claw pole forging 3, but the speed of the centre bore 7d of blank inflow counterdie 7 can be lower than the speed that flows into blade tooth groove 7c under the effect of back pressure P2; The external mold 6 that floats this moment is descending under the promotion of punch on the profile of tooth 12, utilizes the filling of the downward frictional force promotion blade tooth groove 7c of the 6 pairs of blanks of external mold that float; Boss and the blade tooth of last claw pole forging 3 are full of simultaneously, and a small amount of blank is squeezed in the counterdie 7 among the splitter box 7b, has avoided the rapid rising of punch 12 load p 1 on the profile of tooth;
4) take off limited block 13, punch 12 backhauls on the profile of tooth utilize mandrel 8 to eject claw pole forging 3.
Claims (8)
1. electric generators for automobile pawl utmost point enclosed hot forging forming device, comprise punch on the profile of tooth (12), it is characterized in that: punch on the profile of tooth (12) and upper bolster are fixed, counterdie (7) is fixing 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 unsteady external mold (6) is connected with counterdie fixed head (10) by the spring (11) that bears precompression, holder (4) is enclosed within the outside of unsteady external mold (6), fixing by screw and die shoe (9), the mandrel (8) that bears back pressure is contained in the centre bore of counterdie (7), limited block (13) is installed between the following and mandrel (8) of die shoe (9), by the position of limited block (13) control mandrel (8) in counterdie (7), middle pin (5) is inserted in the centre bore of punch (12) on mandrel (8) and the profile of tooth.
2. a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device according to claim 1 is characterized in that: described holder (4), its stepped hole 4a are used for the float position of external mold (6) of restriction, can allow punch (12) passes through on the profile of tooth simultaneously; The external cylindrical surface 6b of its endoporus 4b and unsteady external mold (6) cooperates.
3. a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device according to claim 1 is characterized in that: punch (12), counterdie 7 and mandrel (8) cooperate and form near closed hollow ring on the described unsteady external mold (6), its endoporus 6a and profile of tooth; Its profile 6b and holder (4) endoporus 4b cooperates.
4. a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device according to claim 1, it is characterized in that: described counterdie (7), its standing part are ledge structure 7a, and be fixing by counterdie fixed head (10) and die shoe (9); Blade tooth groove 7c on the external cylindrical surface and unsteady external mold (6) cooperate the blade tooth die cavity that forms sealing; Splitter box 7b leaves at the top of blade tooth groove 7c, is used for retaining unnecessary blank; The centre bore 7d of counterdie (7) is used for placing mandrel (8); Punch (12) cooperates on toothed projections 7e and unsteady external mold (6) and the profile of tooth, control blank flowing in die cavity.
5. a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device according to claim 1, it is characterized in that: described mandrel (8), its cylindrical step 8a and limited block (13) cooperate, and are used for restriction shaping initial stage mandrel (8) in the position of counterdie (7); The centre bore 7d of face of cylinder 8b and counterdie (7) cooperates, and is used for the middle boss of shaping claw pole forging (3); Pin (5) in the middle of placing among the centre bore 8c is for the size that cylinder blank (1) is positioned and guarantees claw pole forging (3) centre bore.
6. a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device according to claim 1 is characterized in that: punch on the described profile of tooth (12), and its standing part is ledge structure 12a, is used for and upper bolster is fixed; Junction of the edges of two sheets of paper pin-and-hole 12b processing prevents that punch on the profile of tooth (12) from rotating in forming process on ledge structure 12a; Toothed projections 12c and unsteady external mold (6) and counterdie (7) cooperate, and form near closed hollow ring, control flowing of blank; Centre bore 12d is used for and middle pin (5) cooperates.
7. a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device according to claim 1, it is characterized in that: described limited block (13), its inner surface is semi-round ring shape 13a, be used for and mandrel (8) cooperation, the position of mandrel (8) in counterdie (7) in the restriction forming process, when finishing when being shaped, take off limited block (13), utilize mandrel (8) to eject claw pole forging (3).
8. the forming technology of a kind of electric generators for automobile pawl utmost point enclosed hot forging forming device according to claim 1, it is characterized in that: circular material blank (1) is earlier become profile of tooth middleware (2) by upsetting squeeze radially in the die cavity of sealing, profile of tooth middleware (2) further is shaped to claw pole forging (3), is specially:
1) after being heated to 1100 ℃～1200 ℃ as raw-material circular material blank (1), pure iron or mild steel is placed on the counterdie (7);
2) punch (12) is depressed on the profile of tooth, behind unsteady external mold (6), counterdie (7) and mandrel (8) formation near closed hollow ring, circular material blank (1) is shaped, because mandrel (8) bears back pressure P2, shaping initial stage die cavity internal pressure is little, mandrel (8) stands fast, and circular material blank (1) is become profile of tooth middleware (2) by upsetting squeeze radially;
3) further depressing along with punch on the profile of tooth (12), the die cavity internal pressure continues to increase, behind the back pressure P2 that bears greater than mandrel (8), mandrel (8) is forced to retreat, blank flows among the centre bore 7d of counterdie (7), the material of profile of tooth middleware (2) profile of tooth end is squeezed into blade tooth groove 7c, the external mold (6) that floats this moment is descending under the promotion of punch on the profile of tooth (12), utilize the external mold (6) that floats the downward frictional force of blank to be promoted the filling of blade tooth groove 7c, because the effect that mandrel (8) bears back pressure P2, limited the flowing velocity of blank among counterdie (7) the centre bore 7d, boss and the blade tooth of claw pole forging (3) are full of simultaneously, a small amount of blank is squeezed among the middle splitter box 7b of counterdie (7), has avoided the rapid rising of punch (12) load p 1 on the profile of tooth;
4) take off limited block (13), punch on the profile of tooth (12) backhaul utilizes mandrel (8) to eject claw pole forging (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310124076.0A CN103192015B (en) | 2013-04-10 | 2013-04-10 | Automotive alternator claw-pole closed-type hot-forging device and process thereof |
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| CN201310124076.0A CN103192015B (en) | 2013-04-10 | 2013-04-10 | Automotive alternator claw-pole closed-type hot-forging device and process thereof |
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| CN103192015B CN103192015B (en) | 2015-03-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290291A (en) * | 2015-11-03 | 2016-02-03 | 江苏龙城精锻有限公司 | Closed pre-forging molding die for special-shaped oil spray device body workblank and process of closed pre-forging molding die |
| CN105642695A (en) * | 2014-12-04 | 2016-06-08 | 汪超 | Die for manufacturing claw pole of automobile generator |
| CN106975720A (en) * | 2017-03-31 | 2017-07-25 | 西安建筑科技大学 | A kind of inaccessible forging of step axis blank |
| CN106984751A (en) * | 2017-06-02 | 2017-07-28 | 湘潭大学 | A kind of bottom belt two-way raised metalwork plate forging forming method and mould |
| CN107433312A (en) * | 2017-09-11 | 2017-12-05 | 江苏龙城精锻有限公司 | A kind of high-pressure common-rail pipe blanking mold and blank-making method |
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Cited By (9)
| 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 |
| CN105290291A (en) * | 2015-11-03 | 2016-02-03 | 江苏龙城精锻有限公司 | Closed pre-forging molding die for special-shaped oil spray device body workblank and process of closed pre-forging molding die |
| 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 |
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| 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 |
| CN106984751A (en) * | 2017-06-02 | 2017-07-28 | 湘潭大学 | A kind of bottom belt two-way raised metalwork plate forging forming method and mould |
| 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 |
| CN107433312A (en) * | 2017-09-11 | 2017-12-05 | 江苏龙城精锻有限公司 | A kind of high-pressure common-rail pipe blanking mold and blank-making method |
| 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 |
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