CN214640277U - Powder metallurgy forming die of many step shape parts - Google Patents

Abstract

The invention provides a powder metallurgy forming die for a multi-step part, which comprises a forming female die, a forming core rod, a forming upper punch, a forming next punch and a forming lower second punch, wherein the forming core rod is sleeved with the forming lower second punch, the forming lower second punch is sleeved with the forming next punch, the forming female die is arranged on the forming next punch, the forming upper punch is sleeved at the top end of the forming core rod, a cavity contour part is arranged in the forming female die, and the forming upper punch, the forming next punch and the forming lower second punch enter the cavity contour part after being sleeved. According to the powder metallurgy forming die for the multi-step part, the concave-convex structures arranged in the forming upper punch, the forming next punch and the forming lower second punch are staggered and aligned, a blank of the pressure reducing and throwing block can be formed in one-step forming, the dependence on machining is saved, the production efficiency is greatly improved, the waste of material cost is avoided, the production cost is effectively reduced, and the production efficiency is improved.

Description

Powder metallurgy forming die of many step shape parts

Technical Field

The utility model relates to an improve powder metallurgy product and make production field, concretely relates to powder metallurgy forming die of many ladder shape parts.

Background

The decompression throwing block is a special-shaped component, is generally made of medium carbon steel or alloy steel, and is manufactured by machining and heat treatment.

Powder metallurgy is a processing method for making various products by pressing and sintering metal powder as a raw material, and the powder metallurgy process comprises three main steps, firstly, a main composition material is decomposed into a plurality of powders consisting of fine particles; then, putting the powder into a die cavity, and applying certain pressure to form a green compact with the shape and the size of the required part; and finally, sintering the pressed compact, wherein the essential advantage of the powder metallurgy part production process is that the final forming capacity and the material utilization rate of the part are high.

Disclosure of Invention

To exist not enough among the prior art, the utility model provides a powder metallurgy forming die of many step shape parts lets the decompression get rid of the piece and can utilize powder metallurgy's shaping advantage to reduce the waste of work load and material, makes its reduction in production cost. The utility model adopts the technical proposal that:

a powder metallurgy forming die for a multi-step part, wherein: the forming die comprises a forming female die, a forming core rod, a forming upper punch, a forming lower punch and a forming lower second punch, wherein the forming core rod is sleeved with the forming lower second punch, the forming lower second punch is sleeved with the forming lower second punch, the forming female die is arranged on the forming lower punch, the forming upper punch is sleeved at the top end of the forming core rod, a cavity contour part is arranged in the forming female die, and the forming upper punch, the forming lower punch and the forming lower second punch enter the cavity contour part after being sleeved.

Preferably, the powder metallurgy forming die for the multi-step part comprises: the forming core rod comprises a forming first core rod, a forming second core rod, a forming core rod upper cover, a forming core rod base and a locking screw, wherein the forming core rod upper cover is arranged on the forming core rod base, the forming core rod upper cover is fixed on the forming core rod base through the locking screw, and the forming core rod upper cover is provided with the forming first core rod and the forming second core rod.

Preferably, the powder metallurgy forming die for the multi-step part comprises: the forming first mandrel sequentially comprises a first mandrel external cylinder, a first material escaping section and a first mandrel positioning section from top to bottom; the second formed core rod comprises a second core rod outer cylinder, a second material escaping section and a second core rod positioning section from top to bottom in sequence; a first positioning section difference hole of the upper core rod cover matched with the first core rod positioning section and a second positioning section difference hole of the upper core rod cover matched with the second core rod positioning section are arranged in the upper forming core rod cover, and a plurality of screw countersunk holes are formed in the periphery of the upper forming core rod cover; a plurality of first thread holes matched with the screw countersunk holes are arranged in the forming core rod base.

Preferably, the powder metallurgy forming die for the multi-step part comprises: the forming lower secondary punching comprises a lower second first punch, a lower second punching upper fixing cover, a lower second punching lower base and a screw, wherein the lower second punching lower base is provided with the lower second punching upper fixing cover, the lower second punching upper fixing cover is provided with the lower second first punch and the lower second punch, and the lower second punching upper fixing cover is fixed on the lower second punching lower base through the screw; and the next forming punch is provided with a next forming punch and a next forming through hole, and the next forming through hole allows the second lower first punch and the second lower punch to pass through.

Preferably, the powder metallurgy forming die for the multi-step part comprises: the periphery of the lower second first punch is provided with a lower second first punch outline part, and the lower second first punch is provided with a third through hole matched with the formed first core rod; a lower second punch outline part is arranged on the periphery of the lower second punch, and a fourth through hole matched with the forming second core rod is formed in the lower second punch; a special-shaped hole profile part allowing the lower second first punching profile part and the lower second punching profile part to pass through is arranged in the lower second punching upper fixing cover, and 4 screw countersunk holes are arranged on the periphery of the lower second punching upper fixing cover (6-3); and a second thread hole matched with a screw countersunk hole of the upper second punching fixing cover (6-3) is arranged in the lower second punching lower base.

Preferably, the powder metallurgy forming die for the multi-step part comprises: the forming upper punch is provided with an upper punch shape punch, the upper punch shape punch surface is provided with a forming upper punch first protruding surface and a forming upper punch second protruding surface, a fifth through hole matched with the forming first core rod shape cylinder is arranged in the upper punch first protruding surface, and a sixth through hole matched with the forming second core rod shape cylinder is arranged in the upper punch second protruding surface.

Preferably, the powder metallurgy forming die for the multi-step part comprises: the second convex surface of the forming upper punch is higher than the first convex surface of the forming upper punch.

Preferably, the powder metallurgy forming die for the multi-step part comprises: first mandrel appearance cylinder length is 45 ~ 55mm, first mandrel appearance cylindrical diameter ratio is first to flee the diameter of material section and is big 0.2 ~ 0.5mm, first mandrel appearance cylindrical diameter ratio is 3 ~ 5mm less than the diameter of first mandrel location section.

Preferably, the powder metallurgy forming die for the multi-step part comprises: the length of the second mandrel shape cylinder is 45-55 mm, the diameter of the second mandrel shape cylinder is 0.2-0.5 mm larger than that of the second material escaping section, and the diameter of the second mandrel shape cylinder is 3-5 mm smaller than that of the second mandrel positioning section.

The invention has the advantages that: the utility model discloses a powder metallurgy forming die of many ladderlike parts, through take shape the upper punch, take shape next towards, take shape the concave-convex structure that sets up in the second towards to take shape next towards, take shape the dislocation of second towards right street, can get rid of the body of piece with the decompression when once taking shape and take shape out, saved even removed the dependence to machining from, not only let promotion by a wide margin of production efficiency still avoided material cost's waste, the effectual manufacturing cost that has reduced and improved production efficiency.

Drawings

Fig. 1 is a top view of a pressure relief flail.

Fig. 2 is a front view of a pressure reducing slinger.

Fig. 3 is a bottom view of the pressure relief flail.

Fig. 4 is a schematic view of a molded die being formed.

Fig. 5 is a partial cross-sectional view of a shaped mandrel.

Fig. 6 is a cross-sectional view of the upper cap of the forming mandrel.

Fig. 7 is a schematic view of a forming punch.

Fig. 8 is a schematic view of the forming of the next punch.

Fig. 9 is a cross-sectional view of the shaped lower second punch.

Figure 10 is a top view of a shaped bottom diel.

Fig. 11 is a top view of a formed lower two-shot upper retaining cap.

Fig. 12 is a schematic view of the overall assembly of the mold.

Detailed Description

The invention is further described with reference to the following specific drawings and examples.

Example 1

The utility model aims at providing a powder metallurgy production mould for the piece is got rid of in decompression, specifically contained shaping bed die 2, shaping plug 3 and shaping upper punch 4 and the crisscross shaping next one dash 5 and take shape down the second towards the subassembly, the decompression of suppressing out the many steps after mutually supporting gets rid of a body blank.

As shown in fig. 1 to 12, the present embodiment provides a powder metallurgy forming die for a multi-step part, wherein: the forming die comprises a forming female die 2, a forming core rod 3, a forming upper punch 4, a forming lower punch 5 and a forming lower punch 6, wherein the forming core rod 3 is sleeved with the forming lower punch 6, the forming lower punch 5 is sleeved on the forming lower punch 6, the forming female die 2 is arranged on the forming lower punch 5, the forming upper punch 4 is sleeved at the top end of the forming core rod 3, a cavity contour part 2-1 is arranged in the forming female die 2, and the forming upper punch, the forming lower punch 5 and the forming lower punch 6 enter the cavity contour part 2-1 after being sleeved.

Wherein: a cavity contour part 2-1 is arranged in the forming female die 2, and the cavity contour part 2-1 is matched with the profile part 1-1 of the decompression throwing block.

Wherein: the forming core rod 3 comprises a forming first core rod 3-1, a forming second core rod 3-2, a forming core rod upper cover 3-3, a forming core rod base 3-4 and locking screws 3-5, wherein the forming core rod upper cover 3-3 is arranged on the forming core rod base 3-4, the forming core rod upper cover 3-3 is fixed on the forming core rod base 3-4 through the locking screws 3-5, and the forming core rod upper cover 3-3 is provided with a forming first core rod 3-1 and a forming second core rod 3-2.

Wherein: the first formed core rod 3-1 sequentially comprises a first core rod outer cylinder 3-1-1, a first material escaping section 3-1-2 and a first core rod positioning section 3-1-3 from top to bottom; the formed second core rod 3-2 comprises a second core rod outer cylinder 3-2-1, a second material escaping section 3-2-2 and a second core rod positioning section 3-2-3 in sequence from top to bottom; a first positioning section difference hole 3-3-1 of the upper core rod cover matched with the first core rod positioning section 3-1-3 and a second positioning section difference hole 3-3-2 of the upper core rod cover matched with the second core rod positioning section 3-2-3 are arranged in the upper forming core rod cover 3-3, and a plurality of screw countersunk holes 3-3-3 are formed in the periphery of the upper forming core rod cover 3-3; a plurality of first thread holes 3-4-1 matched with the screw countersunk holes 3-3-3 are arranged in the forming core rod base 3-4.

The first mandrel profile cylinder 3-1-1 has the same diameter as the first round hole 1-6 arranged in the pressure reducing and throwing block. The diameter of the second core rod outer cylinder 3-2-1 is the same as that of a second round hole 1-7 arranged in the decompression throwing block.

After the first core rod positioning section 3-1-3 and the second core rod positioning section 3-2-3 are matched with the first positioning section difference hole 3-3-1 of the upper core rod cover and the second positioning section difference hole 3-3-2 of the upper core rod cover, the forming core rod base 3-4 and the forming core rod upper cover 3-3 are locked by the screw 3-5.

Wherein: the forming lower second punch 6 comprises a lower second first punch 6-1, a lower second punch 6-2, a lower second punch upper fixing cover 6-3, a lower second punch lower base 6-4 and a screw 6-5, wherein the lower second punch upper fixing cover 6-3 is arranged on the lower second punch lower base 6-4, the lower second punch upper fixing cover 6-3 is provided with the lower second first punch 6-1 and the lower second punch 6-2, and the lower second punch upper fixing cover 6-3 is fixed on the lower second punch lower base 6-4 through the screw 6-5; the forming next punch 5 is provided with a forming next punch 5-1 and a forming next through hole 5-2, and the forming next through hole 5-2 allows the lower first punch 6-1 and the lower second punch 6-2 to pass through.

A formed lower punch 5-1 of the formed lower punch 5 is a part of the profile part 1-1 of the decompression flail block after two areas of a first section difference surface 1-2 and a second section difference surface 1-3 of the decompression flail block are removed; the lower second first punching profile 6-1-1 is the same as the profile of a first section difference surface 1-2 arranged in the decompression throwing block; the lower second punch 6-2 is provided with a lower second punch outline 6-2-1 which is the same as the outline of a second section difference surface 1-3 arranged in the decompression throwing block.

Wherein: a lower second first punch outline part 6-1-1 is arranged on the periphery of the lower second first punch 6-1, and a third through hole 6-1-2 matched with the formed first core rod 3-1 is arranged on the lower second first punch 6-1; a lower second punching outline part 6-2-1 is arranged on the periphery of the lower second punching head 6-2, and a fourth through hole 6-2-2 matched with the forming second core rod 3-2 is arranged on the lower second punching head 6-2; a special-shaped hole profile part 6-3-1 allowing the lower second first punching profile part 6-1-1 and the lower second punching profile part 6-2-1 to pass through is arranged in the lower second punching upper fixing cover 6-3, and 4 screw countersunk holes 6-3-2 are arranged on the periphery of the lower second punching upper fixing cover 6-3; a second thread hole 6-4-1 matched with the screw countersunk hole 6-3-2 of the upper fixing cover 6-3 of the lower second punch is arranged in the lower base 6-4 of the lower second punch.

When the lower second punch 6 combination is formed, the lower first punch 6-1 and the lower second punch 6-2 respectively pass through the profile part 6-3-1 of the special-shaped hole arranged in the lower second punch upper fixing cover 6-3 and then are pressed by the lower second punch lower base 6-4, and then the lower second punch upper fixing cover 6-3 and the lower second punch lower base 6-4 are locked by the screw 6-5.

After the lower second punch 6 is assembled, the lower second punch 6-2 is higher than the lower first punch 6-1, and the specific higher distance is 1-10 of the third step difference distance in the pressure reducing and throwing block.

Wherein: an upper punch outer punch 4-1 is arranged on the upper forming punch 4, a first upper punch forming protruding surface 4-2 and a second upper punch forming protruding surface 4-3 are arranged on the upper punch outer punch 4-1, a fifth through hole 4-4 matched with the first core rod outer cylinder 3-1-1 is arranged in the upper punch first protruding surface 4-2, and a sixth through hole 4-5 matched with the second core rod outer cylinder 3-2-1 is arranged in the upper punch second protruding surface 4-3.

Wherein: the forming upper punch second protruding surface 4-3 is higher than the forming upper punch first protruding surface 4-2.

The outline of the upper punch shape punch 4-1 is matched with that of the decompression throwing block, and the surface of the upper punch shape punch 4-1 is provided with a first forming upper punch convex surface 4-2 and a second forming upper punch convex surface 4-3 which are matched with a third section difference surface 1-4 and a fourth section difference surface 1-5 arranged in the decompression throwing block.

The protruding distance 4-6 of the first protruding surface 4-2 of the upper punch is consistent with the second step difference distance (1-9) of the pressure reduction in the pressure reduction throwing block.

The second convex surface 4-3 of the forming upper punch is higher than the first convex surface 4-2 of the forming upper punch, and the specific convex distance 4-7 is the difference of a decompression fourth section in the decompression flail block from 1-11.

Wherein: the length of the first mandrel shape cylinder 3-1-1 is 45-55 mm, the diameter of the first mandrel shape cylinder 3-1-1 is 0.2-0.5 mm larger than that of the first material escaping section 3-1-2, and the diameter of the first mandrel shape cylinder 3-1-1 is 3-5 mm smaller than that of the first mandrel positioning section 3-1-3.

Wherein: the length of the second core rod outer cylinder 3-2-1 is 45-55 mm, the diameter of the second core rod outer cylinder 3-2-1 is 0.2-0.5 mm larger than that of the second material escaping section 3-2-2, and the diameter of the second core rod outer cylinder 3-2-1 is 3-5 mm smaller than that of the second core rod positioning section 3-2-3.

Fixing a forming core rod 3 on a forming machine during assembly, respectively aligning a third through hole 6-1-2 in a lower first punch 6-1 arranged in a lower second punch 6 and a third through hole 6-1-2 arranged in the lower second punch 6-3 with the forming first core rod 3-1 and the forming second core rod 3-2 arranged in the forming first punch 3-1 and the forming second core rod 3-2 arranged in the lower second punch 6-3, fixing the forming lower through hole 5-2 set by the forming lower first punch 5 on a machine table after passing through the lower first punch 6-1 and the lower second punch 6-2 arranged in the forming lower second punch 6, adjusting the end surface of the lower first punch 6-1 to be higher than the end surface of the forming lower first punch 5, wherein the higher distance is a first section difference surface 1-8 arranged in a decompression throwing block, and then forming the lower punch 5-1 and the lower first punch outline part 6-1-1 and the lower outline part 6-1-1 arranged in the forming lower punch 5 The second contour punching part 6-2-1 is fixed on the forming machine after forming a contour matched with the contour of the cavity of the forming female die.

And aligning the profile part 2-1 of the cavity arranged in the forming female die 2 to form a profile formed by the alignment of a next punch 5-1, a next first punching profile part 6-1-1 and a next second punching profile part 6-2-1, and then placing the profile from top to bottom and fixing the profile on a forming machine.

After aligning a punch outer shape punch 4-1 provided on the forming punch 4 with a cavity contour part 2-1 provided in the forming die 2, the punch is put into the cavity contour part 2-1 provided in the forming die 2.

During pressing, a first protruding surface 4-2 arranged in a forming upper punch 4, a second protruding surface 4-3 of the forming upper punch, a forming next punch 5 and a forming next punch 6 are assembled to form a protruding surface, and a forming core rod 3 penetrates through a forming female die 2, the forming upper punch 4, the forming next punch 5, the forming next punch 6 and other dies, so that an outline 1-1, a first section difference surface 1-2, a second section difference surface 1-3, a third section difference surface 1-4, a fourth section difference surface 1-5, a first through hole 1-6 and a second through hole 1-7 arranged in a decompression throwing block can be simultaneously pressed out of a decompression throwing block blank during primary forming.

The beneficial effects of the utility model are that through taking shape the concave-convex structure that sets up in the upper punch 4, take shape next towards 5, take shape down two towards 6 to take shape next towards 5, take shape down two towards 6 dislocation right street, can get rid of the body of piece with the decompression when once taking shape and take shape out, saved and removed the dependence to machining even from, not only let promotion by a wide margin of production efficiency still avoided material cost's waste, the effectual manufacturing cost that has reduced and improved production efficiency.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a powder metallurgy forming die of many ladder shape parts which characterized in that: including shaping bed die (2), shaping plug (3), shaping upper punch (4), shaping next punch (5), shaping down two punch (6), shaping plug (3) overcoat is established into shaping down two punch (6), shaping down two punch (6) go up the cover establish shaping next punch (5), set up shaping bed die (2) on shaping next punch (5), shaping upper punch (4) are established to shaping plug (3) top cover, set up profile shape chamber portion (2-1) in shaping bed die (2), get into shape chamber profile portion (2-1) after shaping upper punch (4), shaping next punch (5), shaping down two punch (6) cover are established.

2. The powder metallurgy forming die of the multi-step part of claim 1, wherein: the forming core rod (3) comprises a forming first core rod (3-1), a forming second core rod (3-2), a forming core rod upper cover (3-3), a forming core rod base (3-4) and locking screws (3-5), the forming core rod upper cover (3-3) is arranged on the forming core rod base (3-4), the forming core rod upper cover (3-3) is fixed on the forming core rod base (3-4) through the locking screws (3-5), and the forming first core rod (3-1) and the forming second core rod (3-2) are arranged on the forming core rod upper cover (3-3).

3. The powder metallurgy forming die of the multi-step part of claim 2, wherein: the forming first core rod (3-1) sequentially comprises a first core rod outer cylinder (3-1-1), a first material escaping section (3-1-2) and a first core rod positioning section (3-1-3) from top to bottom; the forming second core rod (3-2) comprises a second core rod outer cylinder (3-2-1), a second material escaping section (3-2-2) and a second core rod positioning section (3-2-3) from top to bottom in sequence; a first positioning step difference hole (3-3-1) of the upper core rod cover matched with the first core rod positioning section (3-1-3) and a second positioning step difference hole (3-3-2) of the upper core rod cover matched with the second core rod positioning section (3-2-3) are arranged in the upper forming core rod cover (3-3), and a plurality of screw countersunk holes (3-3-3) are formed in the periphery of the upper forming core rod cover (3-3); a plurality of first thread holes (3-4-1) matched with the screw countersunk holes (3-3-3) are arranged in the forming core rod base (3-4).

4. The powder metallurgy forming die of the multi-step part of claim 3, wherein: the forming lower second punch (6) comprises a lower second first punch (6-1), a lower second punch (6-2), a lower second punch upper fixing cover (6-3), a lower second punch lower base (6-4) and a screw (6-5), the lower second punch upper fixing cover (6-3) is arranged on the lower second punch lower base (6-4), the lower second punch upper fixing cover (6-3) is provided with the lower second first punch (6-1) and the lower second punch (6-2), and the lower second punch upper fixing cover (6-3) is fixed on the lower second punch lower base (6-4) through the screw (6-5); and a forming next punch head (5-1) and a forming next through hole (5-2) are arranged on the forming next punch head (5), and the forming next through hole (5-2) allows the lower first punch head (6-1) and the lower second punch head (6-2) to pass through.

5. The powder metallurgy forming die of the multi-step part of claim 4, wherein: a lower second first punch outline part (6-1-1) is arranged on the periphery of the lower second first punch (6-1), and a third through hole (6-1-2) matched with the forming first core rod (3-1) is arranged on the lower second first punch (6-1); a lower second punching outline part (6-2-1) is arranged on the periphery of the lower second punch head (6-2), and a fourth through hole (6-2-2) matched with the forming second core rod (3-2) is arranged on the lower second punch head (6-2); a special-shaped hole profile part (6-3-1) allowing a lower second first punching profile part (6-1-1) and a lower second punching profile part (6-2-1) to pass through is arranged in the lower second punching upper fixing cover (6-3), and 4 screw countersunk holes (6-3-2) are set on the periphery of the lower second punching upper fixing cover (6-3); a second thread hole (6-4-1) which is matched with the screw countersunk hole (6-3-2) of the lower second punching upper fixing cover (6-3) is arranged in the lower second punching lower base (6-4).

6. The powder metallurgy forming die of the multi-step part of claim 5, wherein: the forming upper punch is characterized in that an upper punch outer punch (4-1) is arranged on the forming upper punch (4), a first forming upper punch protruding surface (4-2) and a second forming upper punch protruding surface (4-3) are arranged on the surface of the upper punch outer punch (4-1), a fifth through hole (4-4) matched with the first forming core rod outer cylinder (3-1-1) is arranged in the upper punch first protruding surface (4-2), and a sixth through hole (4-5) matched with the second forming core rod outer cylinder (3-2-1) is arranged in the upper punch second protruding surface (4-3).

7. The powder metallurgy forming die of the multi-step part of claim 6, wherein: the second convex surface (4-3) of the forming upper punch is higher than the first convex surface (4-2) of the forming upper punch.

8. The powder metallurgy forming die of the multi-step part of claim 7, wherein: the length of the first mandrel shape cylinder (3-1-1) is 45-55 mm, the diameter of the first mandrel shape cylinder (3-1-1) is 0.2-0.5 mm larger than that of the first material escaping section (3-1-2), and the diameter of the first mandrel shape cylinder (3-1-1) is 3-5 mm smaller than that of the first mandrel positioning section (3-1-3).

9. The powder metallurgy forming die of the multi-step part of claim 7, wherein: the length of the second mandrel shape cylinder (3-2-1) is 45-55 mm, the diameter of the second mandrel shape cylinder (3-2-1) is 0.2-0.5 mm larger than that of the second material escaping section (3-2-2), and the diameter of the second mandrel shape cylinder (3-2-1) is 3-5 mm smaller than that of the second mandrel positioning section (3-2-3).

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