CN210877546U - Forming die for synchronous pulley powder metallurgy - Google Patents
Forming die for synchronous pulley powder metallurgy Download PDFInfo
- Publication number
- CN210877546U CN210877546U CN201921825539.5U CN201921825539U CN210877546U CN 210877546 U CN210877546 U CN 210877546U CN 201921825539 U CN201921825539 U CN 201921825539U CN 210877546 U CN210877546 U CN 210877546U
- Authority
- CN
- China
- Prior art keywords
- forming
- punch
- workpiece
- hole
- middle die
- 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
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
The utility model discloses a forming die for synchronous pulley powder metallurgy with long service life and high yield, which comprises a middle die holder, an upper punch, a core rod penetrating into the middle die holder and used for forming a middle rotation stopping installation through hole of a workpiece, wherein the middle die holder is detachably provided with a middle die core used for forming the outer side surface of the workpiece, the upper part of the middle die core is provided with a forming groove used for forming the side surface and the bottom surface of the upper disc part of the workpiece, the lower part of the middle die core is provided with a plurality of strip-shaped forming lugs of upper teeth of the formed workpiece, and the core rod is movably sleeved with a lower punch of which the upper part; the outer side surface of the upper part of the lower punch is provided with a plurality of grooves matched with the strip-shaped forming lugs on the middle die core; the upper punch is provided with a forming groove for forming the upper surface of a workpiece, the upper punch is provided with a middle through hole for the upper end of the core rod to penetrate through, and the upper punch is provided with a horizontally-penetrating exhaust port communicated with the middle through hole.
Description
Technical Field
The utility model relates to a forming die for synchronous pulley powder metallurgy.
Background
The synchronous pulley product shown in fig. 1 and 2 has thinner steps, and the difference between the large outer diameter of the product and the outer diameter of the teeth is too small, if a traditional structure (upper punch + middle die + next punch + lower second punch + core rod) is adopted for powder forming, because the bottom surface of the next punch forming workpiece, the lower side surface and the upper step of the lower second punch forming workpiece and the side surface of the step of the middle die forming workpiece are simple in integral structure and easy to process, two risks exist, 1, small cracks which are not easy to be perceived easily occur at the step, the service life of the product is greatly shortened, and 2, the thickness of the next punch wall is too thin, and the synchronous pulley product is easy to crack in the using process.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the forming die for powder metallurgy of the synchronous pulley has long service life and high yield.
For solving the technical problem, the utility model discloses the technical scheme who adopts does: the forming die for powder metallurgy of the synchronous belt pulley comprises a middle die holder, an upper punch and a core rod penetrating into the middle die holder and used for forming a middle rotation stopping installation through hole of a workpiece, wherein a middle die core used for forming the outer side surface of the workpiece is detachably arranged in the middle die holder; the outer side surface of the upper part of the lower punch is provided with a plurality of grooves matched with the strip-shaped forming lugs on the middle die core; the upper punch is provided with a forming groove for forming the upper surface of a workpiece, the upper punch is provided with a middle through hole for the upper end of the core rod to penetrate through, and the upper punch is provided with a horizontally-penetrating exhaust port communicated with the middle through hole.
Preferably, the through hole for the core rod to pass through in the lower punch is a stepped through hole, and the core rod is provided with a matched step part.
As a preferable scheme, the through hole for the lower punch to penetrate through in the middle die holder is a step-shaped through hole, and the lower punch is provided with a matched step part.
The utility model has the advantages that: in comparison, the middle mold core has a complex structure, the manufacturing difficulty is slightly increased, but the service life of the mold is greatly prolonged compared with the original structure; and the stress is uniform when the workpiece is formed, the problems of cracking and the like are not easy to occur, and the product quality is improved.
Because the through hole for the core rod to pass through in the lower punch is the echelonment through hole, be equipped with the matched with step portion on the core rod, be convenient for accomodating of mould.
Because the through hole that supplies the lower punch to penetrate in the well die holder is the echelonment through hole, be equipped with matched with step portion on the lower punch, further made things convenient for accomodate, reduced and accomodate required space, and the suit is deposited, has reduced the risk that the part loses.
Drawings
Fig. 1 is a schematic top view of the workpiece to be processed according to the present invention.
Fig. 2 is a schematic sectional view of the workpiece to be machined according to the present invention.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a schematic structural diagram of the through hole in the middle mold core of the present invention.
Fig. 5 is a schematic structural view of the middle lower punch upper surface of the present invention.
In fig. 3: 1. the die comprises a middle die holder, 2 parts of an upper punch, 3 parts of a core rod, 4 parts of a middle die core and 5 parts of a lower punch; 6. and (7) an exhaust port.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in fig. 3-5, the forming die for powder metallurgy of the synchronous pulley comprises a middle die holder 1, an upper punch 2 and a core rod 3 penetrating into the middle die holder 1 for forming a middle rotation-stopping installation through hole of a workpiece, wherein a middle die core 4 for forming the outer side surface of the workpiece is detachably arranged in the middle die holder 1, a forming groove for forming the side surface and the bottom surface of the upper disc part of the workpiece is arranged at the upper part of the middle die core 4, a plurality of strip-shaped forming convex blocks for forming the upper teeth of the workpiece are arranged at the lower part of the middle die core 4, and a lower punch 5, the upper part of which penetrates into the middle die core; the through hole for the lower punch 5 to penetrate through in the middle die holder 1 is a step-shaped through hole, and the lower punch 5 is provided with a matched step part.
The through hole for the core rod 3 to pass through in the lower punch 5 is a step-shaped through hole, and the core rod 3 is provided with a matched step part. The outer side surface of the upper part of the lower punch 5 is provided with a plurality of grooves matched with the strip-shaped forming lugs on the middle mold core 4; the upper punch 2 is provided with a forming groove for forming the upper surface of a workpiece, the upper punch 2 is provided with a middle through hole for the upper end of the core rod 3 to penetrate through, and the upper punch 2 is provided with a horizontal through exhaust port 6 communicated with the middle through hole.
During the forming process, the core rod 3 and the lower punch 5 extend into the middle mold core 4, the upper punch 2 is pressed downwards to complete powder forming, the stress of a workpiece is uniform, and the problems of cracking and the like are solved.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, and are not intended to limit the present invention; it should be noted that, for those skilled in the art, without departing from the inventive concept, several changes and modifications can be made, which are within the scope of the present invention.
Claims (3)
1. Synchronous pulley is forming die for powder metallurgy, its characterized in that: the upper part of the middle die core is provided with a forming groove for forming the side surface and the bottom surface of a disc part at the upper part of the workpiece, the lower part of the middle die core is provided with a plurality of strip-shaped forming lugs for forming the upper teeth of the workpiece, and the upper part of the core rod is movably sleeved with a lower die of which the middle die core penetrates through the middle die core for forming the lower bottom surface of the workpiece; the outer side surface of the upper part of the lower punch is provided with a plurality of grooves matched with the strip-shaped forming lugs on the middle die core; the upper punch is provided with a forming groove for forming the upper surface of a workpiece, the upper punch is provided with a middle through hole for the upper end of the core rod to penetrate through, and the upper punch is provided with a horizontally-penetrating exhaust port communicated with the middle through hole.
2. The forming die for powder metallurgy of the synchronous pulley according to claim 1, wherein: the through hole for the core rod to pass through in the lower punch is a step-shaped through hole, and the core rod is provided with a matched step part.
3. The forming die for powder metallurgy of the synchronous pulley according to claim 2, wherein: the through hole for the lower punch to penetrate through in the middle die base is a stepped through hole, and the lower punch is provided with a matched step part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825539.5U CN210877546U (en) | 2019-10-28 | 2019-10-28 | Forming die for synchronous pulley powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825539.5U CN210877546U (en) | 2019-10-28 | 2019-10-28 | Forming die for synchronous pulley powder metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210877546U true CN210877546U (en) | 2020-06-30 |
Family
ID=71340467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921825539.5U Active CN210877546U (en) | 2019-10-28 | 2019-10-28 | Forming die for synchronous pulley powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210877546U (en) |
-
2019
- 2019-10-28 CN CN201921825539.5U patent/CN210877546U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108838226B (en) | Hot back extrusion forming method for titanium alloy cup-shaped piece | |
| CN202290828U (en) | One-step forming die for gear shaft | |
| CN203003032U (en) | Precision forging extrusion die device | |
| CN202028688U (en) | Feed line window aluminium cylinder punching die | |
| CN214768660U (en) | Coal cutting pick mold structure capable of preventing mold from cracking | |
| CN108941233B (en) | Open internal type forward and backward extrusion composite die | |
| CN210877546U (en) | Forming die for synchronous pulley powder metallurgy | |
| CN206383542U (en) | A kind of exhaust structure of nuclear fuel processing mold | |
| CN206334977U (en) | Electrode cap secondary extrusion mould | |
| CN202701377U (en) | Magnetic tile two-cavity die | |
| CN201871727U (en) | Powder metallurgy forming machine | |
| CN209738110U (en) | Sole mould of light drawing of patterns | |
| CN212822177U (en) | Pressing die | |
| CN211567057U (en) | Forming die manufacturing device | |
| CN205043060U (en) | Hang some gold utensil forging mould | |
| CN211218673U (en) | Powder metallurgy gear hub pressing die with T-shaped key groove | |
| CN102837447A (en) | Bar stock pressing mold | |
| CN201572849U (en) | Knockout plate for positioning conical hole of stamping die of conical thin-walled piece | |
| CN208513481U (en) | Upper suspension arm arm body flanging forming mold | |
| CN107962110A (en) | A kind of hole flanging mold of anti-hole flanging cracking | |
| CN110153287A (en) | A kind of sheet metal component stamping flanging die of Simple And Practical | |
| CN211682672U (en) | Improved generation high temperature wear-resisting pouring plate shaping embossing mold utensil | |
| CN206445087U (en) | A kind of composite punching mould of round square plate base | |
| CN205512098U (en) | Novel chocolate assembling die | |
| CN205058377U (en) | Silica gel brush mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |