CN2548740Y - Shape die of hole-type component with internal screw - Google Patents
Shape die of hole-type component with internal screw Download PDFInfo
- Publication number
- CN2548740Y CN2548740Y CN 02224375 CN02224375U CN2548740Y CN 2548740 Y CN2548740 Y CN 2548740Y CN 02224375 CN02224375 CN 02224375 CN 02224375 U CN02224375 U CN 02224375U CN 2548740 Y CN2548740 Y CN 2548740Y
- Authority
- CN
- China
- Prior art keywords
- core bar
- heelpiece
- main core
- demoulding
- mould
- 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.)
- Expired - Lifetime
Links
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- Forging (AREA)
- Powder Metallurgy (AREA)
Abstract
The utility model discloses a forming die of a hollow part with an inner spiral consisting of a base wad and a core rod arranged on the same shaft. The core rod is a combined type and consists of a main core rod and an auxiliary rod sleeved thereon. A forming section of the main core shaft is designed to be an outer spiral corresponding to the inner spiral of the part. A demould section is designed with a spiral groove having the same rotational direction and lead as the inner spiral of the part. A fixed guide rod that matches with the spiral groove is arranged on the base wad. The utility model can realize quick forming and successful demould, greatly save processing time and process cost and improve work efficiency. The utility model can be used in drawing dies of a thread rib steel and an auto distributor, etc.
Description
Technical field:
The utility model relates to a kind of moulding mould therefor of powdered metal parts with holes, relates in particular to a kind of mould of the pass part with inside spin.
Background technology:
Make the used mould of pass part of band inside spin at present, the dusty material mold pressing is become be with unthreaded hole and give the part blank that stays allowance, this part blank is behind sintering, and employing is carried out the spark machined inside spin with the electrode of inside spin response again.Therefore process velocity is slow, the cycle is long, cost is high.
The utility model content:
The existing mold manufacturing procedure is many at using, the problem that the cycle is long, speed is slow, cost is high, and the utility model provides the mould of the pass part of the band inside spin that a kind of manufacturing procedure is few, the cycle is short, cost is low.
The utility model has mainly been done improvement to the core bar and the heelpiece of existing mold, it comprises the heelpiece of coaxial arrangement, core bar, it is characterized in that: described core bar is knockdown, core bar is by containing supporting area, shaping area, the main core bar of demoulding guide portion and the auxiliary core bar that is sleeved on the supporting area of main core bar are formed, supporting area is used to support auxiliary core bar, design has the external spiral that the inner spiral groove with part with internal screw hole matches fully on the shaping area on the main core bar, the demoulding guide portion design of main core bar have rotation direction and helical pitch consistent with external spiral on the shaping area be used for the helicla flute that the demoulding is led; The diameter in the demoulding district of main core bar, axial length are respectively greater than diameter, the axial length of shaping area; Heelpiece is provided with the centre bore that is slidingly matched with main core bar, and simultaneously heelpiece has been disposed radially the fixed guide post, and the head of this fixed guide post stretches into the centre bore of heelpiece, and matches with helicla flute on the demoulding guide portion of main core bar.
The helicla flute of external spiral on the shaping area of main core bar and demoulding guide portion is angular thread, rectangular thread, trapezoidal thread or outer helical teeth.
Lead quantity is 1, radially is provided with along the arbitrary of described heelpiece.
Lead quantity is 2 or 3, along circumferentially being symmetrical arranged of the same axial height of described heelpiece.
The afterbody of lead is circular cone or cylinder.
Heelpiece is made up of outer shroud and interior ring, encircles in lead is arranged on.
Because the utility model has been done improvement to the core bar and the heelpiece of prior art, the withdrawing from of core bar, rotation direction, helical pitch are all consistent with the inside spin of band part with internal screw hole during the demoulding, therefore can not destroy the inner spiral hole of described part, thereby realize the smooth demoulding, a product only needs 2-3 minute from accurate forming to the smooth demoulding, owing to considered the sintering constriction coefficient during the utility model design in advance, behind sintering, can realize the chipless processing of internal screw hole powdered metal parts, once can obtain large quantities of parts according to the agglomerating plant ability; To high-precision internal screw hole powdered metal parts, other fine finishining means that also can be behind sintering realize few smear metal processing.The technical program saves material greatly, moulding is accurate, has reduced process time and process cost, and production efficiency significantly improves, and part also reduces forming residual stress.The utility model can also apply to screw thread rib steel and automobile distributor controlled etc. control mould.
Description of drawings:
Fig. 1 is the utility model axial section schematic diagram.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is elaborated
The part of present embodiment mold pressing is the powdered metal parts of an interior pore area four-head rectangle left-hand screw, and its diameter is d, and lead angle is β, helical pitch P=dX β.As can be seen from Figure 1, the utility model by heelpiece 1, core bar 2, former 6, drift 7, place restrictions on ring and 8 form, former 6 places on the heelpiece 1, places restrictions on to encircle 8 and place on the former 6, core bar 2 one ends pass the centre bore 1a of heelpiece 1, heelpiece 1, former 6, core bar 2, place restrictions on the ring 8 equal coaxial arrangement; Core bar 2 is made up of main core bar 3 and auxiliary core bar 4, main core bar 3 contains supporting area 3a, shaping area 3b, demoulding district 3c, auxiliary core bar 4 is sleeved on the supporting area 3a of main core bar 3, being designed to inside spin diameter and helical pitch with described powdered metal parts on the shaping area 2b matches and (matches and be meant and considered the sintering constriction coefficient in advance, with the satisfactory correlation of element precision behind the assurance sintering), rotation direction is with the outer rectangle left-hand screw 3e of the four-head that equates; For leading steadily, the helicla flute 3d of demoulding guide portion 3c is designed to three rectangular coil grooves, and its rotation direction is consistent with the external spiral 3e of main core bar 3 shaping area 3b with helical pitch.The centre bore 1a of main core bar 3 demoulding district 3c and heelpiece 1 is slidingly matched; The upper surface of heelpiece 1, former 6 inner surfaces, main core bar 3 shaping area 3b, the common forming cavity that forms described powdered metal parts of drift 7 lower surfaces; Heelpiece 1 has been disposed radially three fixed guide posts 5, along circumferentially being symmetrical arranged of heelpiece 1 same axial height; The head 5a of fixed guide post 5 stretches into the centre bore 1a of heelpiece 1, and matches with the helicla flute 3d of the demoulding guide portion 3c of main core bar 3, and its afterbody is conical.
After drift 7, auxiliary core bar 4 upwards withdraw from die cavity during the demoulding after the moulding, when withdrawing from downwards, main core bar 3 axially rotates around it, direction of rotation is consistent with the rotation direction of the inside spin of described powdered metal parts, promptly turn clockwise, and its downward displacement is consistent with the helical pitch of the inside spin of described powdered metal parts when whenever rotating a circle.The moving downward and rotatablely moving of main core bar 3 is slidingly matched, places realizing cooperating of helicla flute 3d on the demoulding district 3c of heelpiece 1 fixed guide post 5 radially and main core bar 3 by its demoulding district 3c with the centre bore 1a of described heelpiece 1 respectively.
External spiral on the shaping area 3b of main core bar 3 can also be angular thread, trapezoidal thread or interior helical teeth according to the powder metallurgy inside spin of need compacting, is designed to corresponding outer angular thread, trapezoidal thread or interior helical teeth; The helicla flute 3d of demoulding guide portion 3c can also be angular thread groove, trapezoidal thread groove or interior helical teeth groove.
The helicla flute 3d of the demoulding guide portion 3c of main core bar 3 can be designed as one, and correspondingly, the quantity of fixed guide post 5 also is 1, radially is provided with along the arbitrary of described heelpiece 1; The afterbody 5b of lead 5 also can be cylinder.
Heelpiece 1 is made up of outer shroud and interior ring, encircles in lead 5 is arranged on; Heelpiece 1 also can be designed as an integral body.
Claims (6)
1, a kind of mould of the pass part with inside spin, the heelpiece (1) that comprises coaxial arrangement, core bar (2), it is characterized in that: described core bar (2) is knockdown, core bar (2) is by containing supporting area (3a), shaping area (3b), the main core bar (3) of demoulding guide portion (3c) and the auxiliary core bar (4) that is sleeved on the supporting area (3a) of main core bar (3) are formed, supporting area (3a) is used to support auxiliary core bar (4), shaping area (3b) on the main core bar (3) is gone up the external spiral (3e) that design has the inner spiral groove with part with internal screw hole to match fully, demoulding guide portion (3c) design of main core bar (3) have rotation direction and helical pitch and shaping area (3b) go up external spiral (3e) consistent be used for the helicla flute (3d) that the demoulding is led; The diameter in the demoulding district (3c) of main core bar (3), axial length are respectively greater than diameter, the axial length of shaping area (3d); Heelpiece (1) is provided with the centre bore (1a) that is slidingly matched with main core bar (3), heelpiece (1) has been disposed radially fixed guide post (5) simultaneously, the head (5a) of this fixed guide post (5) stretches into the centre bore (1a) of heelpiece (1), and matches with helicla flute (3d) on the demoulding guide portion (3c) of main core bar (3).
2, the mould of the pass part of band inside spin according to claim 1 is characterized in that: the external spiral (3e) on the shaping area (3b) of described main core bar (3) and the helicla flute (3d) of demoulding guide portion (3c) are angular thread, rectangular thread, trapezoidal thread or outer helical teeth.
3, the mould of the pass part of band inside spin according to claim 1 and 2 is characterized in that: described lead (5) quantity is 1, radially is provided with along the arbitrary of described heelpiece (1).
4, the mould of the pass part of band inside spin according to claim 1 and 2 is characterized in that: described lead (5) quantity is 2 or 3, along circumferentially being symmetrical arranged of described heelpiece (1) same axial height.
5, the mould of the pass part of band inside spin according to claim 1 and 2 is characterized in that: the afterbody (5b) of described lead (5) is circular cone or cylinder.
6, the mould of the pass part of band inside spin according to claim 1 and 2 is characterized in that: heelpiece (1) is made up of outer shroud and interior ring, encircles in lead (5) is arranged on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224375 CN2548740Y (en) | 2002-07-02 | 2002-07-02 | Shape die of hole-type component with internal screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224375 CN2548740Y (en) | 2002-07-02 | 2002-07-02 | Shape die of hole-type component with internal screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548740Y true CN2548740Y (en) | 2003-05-07 |
Family
ID=33701807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02224375 Expired - Lifetime CN2548740Y (en) | 2002-07-02 | 2002-07-02 | Shape die of hole-type component with internal screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2548740Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398031A (en) * | 2011-10-22 | 2012-04-04 | 四川科力特硬质合金股份有限公司 | Hard alloy product pressing die with major spiral on inner circle and shaping method |
-
2002
- 2002-07-02 CN CN 02224375 patent/CN2548740Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398031A (en) * | 2011-10-22 | 2012-04-04 | 四川科力特硬质合金股份有限公司 | Hard alloy product pressing die with major spiral on inner circle and shaping method |
| CN102398031B (en) * | 2011-10-22 | 2013-10-30 | 四川科力特硬质合金股份有限公司 | Hard alloy product pressing die with major spiral on inner circle and shaping method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |