CN210966974U - Forming die for powder metallurgy of base part with hole - Google Patents
Forming die for powder metallurgy of base part with hole Download PDFInfo
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- CN210966974U CN210966974U CN201921826180.3U CN201921826180U CN210966974U CN 210966974 U CN210966974 U CN 210966974U CN 201921826180 U CN201921826180 U CN 201921826180U CN 210966974 U CN210966974 U CN 210966974U
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Abstract
The utility model discloses a forming die for powder metallurgy of a perforated base part with high yield, which comprises a middle die holder, an upper punch and a core rod for forming a middle through hole of a workpiece, wherein the middle die holder is detachably provided with a middle die core for forming the outer side surface of the workpiece, and the core rod is movably sleeved with a lower secondary punch for forming the lower bottom surface of the workpiece; the lower punch is movably sleeved with a lower punch for forming the lower surface of the upper step of the workpiece and the side surface of the lower section of the workpiece, the lower punch is provided with two forming blocks for forming the upper hole of the workpiece, the whole circumference of each forming block is provided with a draft angle of 5 degrees, and a transition fillet is arranged between the bottom of each forming block and the lower punch; the middle part of the upper punch is provided with a middle through hole for the upper end of the core rod to penetrate, the upper punch is provided with two positioning through holes matched with the next upper punch forming block, and the bottom end of the upper punch is provided with a bulge matched with the upper end surface of a workpiece to be formed.
Description
Technical Field
The utility model relates to a forming die for powder metallurgy of foraminiferous base part.
Background
The base part with holes as shown in fig. 1 and 2 has a large outer diameter ratio and a thin step, and two square holes need to be arranged beside a middle round hole, when powder metallurgy forming is carried out, the traditional method uses a core rod to make the square holes and the middle round hole, but the product with the considered outer diameter ratio is large, the step is thin, if the core rod is used as the square hole, the product demoulding force is too large, and cracks are easily generated at the square holes and the step.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provided is a forming die for powder metallurgy of a base part with a hole, which has a 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 base part with the hole comprises a middle die holder, an upper punch and a core rod for forming a middle through hole of a workpiece, wherein a middle die core for forming the outer side surface of the workpiece is detachably arranged in the middle die holder, and a lower secondary punch for forming the lower bottom surface of the workpiece is movably sleeved on the core rod; the lower punch is movably sleeved with a lower punch for forming the lower surface of the upper step of the workpiece and the side surface of the lower section of the workpiece, the lower punch is provided with two forming blocks for forming the upper hole of the workpiece, the whole circumference of each forming block is provided with a draft angle of 5 degrees, and a transition fillet is arranged between the bottom of each forming block and the lower punch; the middle part of the upper punch is provided with a middle through hole for the upper end of the core rod to penetrate, the upper punch is provided with two positioning through holes matched with the next upper punch forming block, and the bottom end of the upper punch is provided with a bulge matched with the upper end surface of a workpiece to be formed.
As a preferable scheme, the upper punch is provided with a horizontal vent hole communicated with the middle through hole.
As a preferable scheme, the upper punch is further provided with a horizontal vent hole communicated with the positioning through hole.
The utility model has the advantages that: the square hole is made through next punching in the die, the forming block is provided with a 5-degree draft angle in the whole circumference, and a transition fillet is arranged between the bottom of the forming block and the next punching, so that the use performance of the product is not influenced, the production risk of the product is reduced, and the mass production is facilitated.
Because the upper punch is provided with the horizontal vent hole communicated with the middle through hole, the embedding of the forming block is convenient.
Because the upper punch is also provided with a horizontal vent hole communicated with the positioning through hole, the core rod can be conveniently embedded.
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.
In fig. 3: 1. the method comprises the following steps of (1) middle die base, 2. upper punch, 3. core rod, 4. middle die core and 5. lower secondary punch; 6. next punch, 7. forming block, 8. horizontal vent hole.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in fig. 3, the forming die for powder metallurgy of the base part with the hole comprises a middle die holder 1, an upper punch 2 and a core rod 3 for forming a middle 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, and a lower secondary punch 5 for forming the lower bottom surface of the workpiece is movably sleeved on the core rod 3; the lower second punch 5 is movably sleeved with a lower first punch 6 for forming the lower surface of the upper step of the workpiece and the side surface of the lower section of the workpiece, the lower first punch 6 is provided with two forming blocks 7 for forming the upper hole of the workpiece, the whole circumference of each forming block 7 is provided with a 5-degree draft angle, and a transition fillet is arranged between the bottom of each forming block 7 and the lower first punch 6;
the middle part of the upper punch 2 is provided with a middle through hole for the upper end of the core rod to penetrate, the upper punch 2 is provided with two positioning through holes matched with the forming block 7 on the next punch 6, the upper punch 2 is provided with a horizontal vent hole 8 communicated with the middle through hole, the upper punch 2 is also provided with a horizontal vent hole communicated with the positioning through hole, and the bottom end of the upper punch 2 is provided with a bulge matched with the upper end surface of a workpiece to be formed.
When the device works, the core rod 3 is lifted to enable the upper part of the core rod to be positioned in the middle mold core 4, then the next punch 6 and the next punch 5 are adjusted to be in place, and after metal powder is placed, the upper punch 2 is driven to move downwards to compress the powder to form a workpiece blank.
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. Foraminiferous base part's forming die for powder metallurgy, its characterized in that: the device comprises a middle die holder, an upper punch and a core rod for forming a middle through hole of a workpiece, wherein the middle die holder is detachably provided with a middle die core for forming the outer side surface of the workpiece, and the core rod is movably sleeved with a lower secondary punch for forming the lower bottom surface of the workpiece; the lower punch is movably sleeved with a lower punch for forming the lower surface of the upper step of the workpiece and the side surface of the lower section of the workpiece, the lower punch is provided with two forming blocks for forming the upper hole of the workpiece, the whole circumference of each forming block is provided with a draft angle of 5 degrees, and a transition fillet is arranged between the bottom of each forming block and the lower punch; the middle part of the upper punch is provided with a middle through hole for the upper end of the core rod to penetrate, the upper punch is provided with two positioning through holes matched with the next upper punch forming block, and the bottom end of the upper punch is provided with a bulge matched with the upper end surface of a workpiece to be formed.
2. The molding die for powder metallurgy of a base part with a hole according to claim 1, wherein: and the upper punch is provided with a horizontal vent hole communicated with the middle through hole.
3. The forming die for powder metallurgy of a base part with a hole according to claim 2, wherein: the upper punch is also provided with a horizontal vent hole communicated with the positioning through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921826180.3U CN210966974U (en) | 2019-10-28 | 2019-10-28 | Forming die for powder metallurgy of base part with hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921826180.3U CN210966974U (en) | 2019-10-28 | 2019-10-28 | Forming die for powder metallurgy of base part with hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210966974U true CN210966974U (en) | 2020-07-10 |
Family
ID=71440755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921826180.3U Active CN210966974U (en) | 2019-10-28 | 2019-10-28 | Forming die for powder metallurgy of base part with hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210966974U (en) |
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2019
- 2019-10-28 CN CN201921826180.3U patent/CN210966974U/en active Active
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