CN107671283B - Powder metallurgy forming equipment for motor shell - Google Patents
Powder metallurgy forming equipment for motor shell Download PDFInfo
- Publication number
- CN107671283B CN107671283B CN201711166521.4A CN201711166521A CN107671283B CN 107671283 B CN107671283 B CN 107671283B CN 201711166521 A CN201711166521 A CN 201711166521A CN 107671283 B CN107671283 B CN 107671283B
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- die
- monomer
- outer die
- monomers
- mold
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 15
- 239000000178 monomer Substances 0.000 claims abstract description 113
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 2
- 238000010097 foam moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009702 powder compression Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/004—Filling molds with powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the technical field of motor manufacturing, and particularly relates to powder metallurgy forming equipment of a motor shell, which comprises a working platform, wherein a die unit is arranged on the working platform, the die unit comprises a core die, at least two outer die monomers are arranged on the periphery of the core die in a surrounding manner, after the outer die monomers are folded with each other, the outer die monomers are enclosed with the core die to form a forming cavity for containing metallurgy powder, at least two grooves are respectively arranged on each outer die monomer, the groove points of the grooves on the same outer die monomer are consistent, and an outer die driving unit drives each outer die monomer to move along a path parallel to the direction of the groove points of the grooves so as to fold or separate the outer die monomers. The die unit can effectively avoid blank damage caused by die separation, is suitable for manufacturing various complex motor shells, can greatly improve the dimensional accuracy and appearance quality of the motor shells, effectively reduces cutting of materials, and reduces manufacturing cost while improving product quality.
Description
Technical Field
The invention belongs to the technical field of motor manufacturing, and particularly relates to powder metallurgy forming equipment for a motor shell.
Background
The motor shell is formed by traditional casting processes such as manual molding, cast molding, lost foam molding and the like, and the processes have the following defects: the efficiency of manual modeling is low, and the quality of the product is unstable; the casting and pressing molding limits the selection of product materials, and has high requirements on equipment such as a press and the like, so that the investment cost of the mould and the equipment is high; the lost foam molding is complex in process, not suitable for mass production of small pieces, and high in investment cost of molds and equipment. In the prior art, the periphery of the motor shell is usually provided with a plurality of groups of cooling fins, and because the arrangement directions of the cooling fins of each group are different, the cooling fins are difficult to demould when being cast together with the main body of the motor shell, and the cooling fins are extremely easy to deform during demould, so that the quality of a finished product of the motor shell is influenced.
Disclosure of Invention
The invention aims to provide powder metallurgy forming equipment for a motor shell, which is high in production efficiency and wide in application range.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a powder metallurgy forming equipment of motor housing, includes work platform, work platform on be equipped with the mould unit, the mould unit include the mandrel, the periphery ring of mandrel is equipped with two at least outer die monomers, each outer die monomer is enclosed with the mandrel after folding each other and is closed the shaping chamber that forms holding metallurgical powder, be equipped with two at least recesses on each outer die monomer respectively, the notch orientation of the recess on the same outer die monomer is unanimous, the external die drive unit drive each outer die monomer is along the directional path motion of its recess notch of being on a parallel with respectively realizing the folding or the separation of outer die monomer.
Compared with the prior art, the invention has the following technical effects: the die unit can effectively avoid blank damage caused by die separation, is suitable for manufacturing various complex motor shells, and can also greatly improve the size precision and appearance quality of the motor shells. After powder compression molding, vacuum sintering is carried out on the molded blank to obtain the motor shell with more densified structure, so that the cutting of materials is effectively reduced, the product quality is improved, and the manufacturing cost is reduced.
Drawings
The contents expressed in the drawings of the present specification and the marks in the drawings are briefly described as follows:
FIGS. 1 and 2 are schematic views of the present invention;
FIG. 3 is a schematic cross-sectional view of the mold unit in a clamped state;
FIG. 4 is a schematic cross-sectional view of a mold unit in a disassembled state;
Fig. 5 is a schematic cross-sectional view of an outer die element in a disassembled state.
In the figure: 10. work platform, 20, mold unit, 21, mandrel, 22, outer mold unit, 22a, mold locking unit, 221, recess, 222, parting plane, 223, mold clamping step, 23, mold frame unit, 231, recess, 24, molding cavity, 25, compression mold, 30, outer mold drive unit, 31, drive plate, 32, connecting rod, 40, mold frame drive unit, 50, compact unit, 51, press plate, 52, press rod, 60, blank receiving platform.
Detailed Description
The following describes the embodiments of the present invention in further detail by way of examples with reference to the accompanying drawings.
The powder metallurgy forming equipment for the motor shell comprises a working platform 10, wherein a die unit 20 is arranged on the working platform 10, the die unit 20 comprises a core die 21, at least two outer die monomers 22 are arranged on the periphery of the core die 21 in a surrounding mode, after the outer die monomers 22 are folded with each other, the outer die monomers 22 are enclosed with the core die 21 to form a forming cavity 24 for containing metallurgy powder, at least two grooves 221 are respectively arranged on each outer die monomer 22, the notch directions of the grooves 221 on the same outer die monomer 22 are consistent, and an outer die driving unit 30 drives each outer die monomer 22 to move along a path parallel to the notch directions of the grooves 221 to achieve folding or separating of the outer die monomers 22. The molding cavity 24 conforms to the shape of the molded motor housing, the inner mold surface of the outer mold monomer 22 conforms to the outer peripheral wall of the motor housing, the grooves 221 on the outer mold monomer 22 are used for forming cooling fins on the outer periphery of the motor housing, and the core mold 21 forms an inner cavity of the motor housing. Because the notch points of the groove 221 on each outer die monomer 22 are consistent and the movement path of the outer die monomer 22 is parallel to the notch points of the groove 221, interference between the outer die monomer 22 and the radiating fin during separation can be effectively avoided after the motor housing blank is pressed, and the quality of a finished motor housing is ensured.
It should be noted that, as shown in fig. 1 and 2, the axis of the mold unit 20 may be arranged vertically or horizontally, or may be arranged obliquely according to the use requirement. The arrangement of the die unit 20 does not affect its molding function.
Preferably, as shown in fig. 3 and 5, the cross section of the outer die monomer 22 is in an arch shape, two end surfaces of the outer die monomer 22 located on the circumferential direction of the core mold are mold clamping surfaces 222, the mold clamping surfaces 222 are integrally arranged along the radial direction of the core mold 21, the mold clamping surfaces 222 of the outer die monomer 22 are in abutting connection with each other when in a closed state, the outer die monomer 22 is arranged in pairs and is at least four, the outer die monomer 22 comprises at least one group of mold locking monomers 22a which are oppositely arranged, and the distance between the mold clamping surfaces 222 of the mold locking monomers 22a on the side close to the core mold 21 is smaller than the distance between the mold clamping surfaces 222 on the side far away from the core mold 21. It should be noted that the outer die 22 has various shapes, and for convenience of description, the outer die 22 having a closed-up cross section is defined as a die-locking die 22a. The clamping face 222 of the clamping unit 22a can be used as a wedge-shaped locking structure to ensure the stability of the outer die unit 22 in the clamping state. That is, since the section of the die locking unit 22a is in a closed state, when the outer die unit 22 is in a closed state, the die locking unit 22a must be driven to displace outwards, after a gap exists between the die locking unit 22a and the outer die unit 22 adjacently arranged, the locking state of the outer die unit 22 adjacently arranged to the die locking unit 22a can be released, and the outer die unit 22 adjacently arranged to the die locking unit 22a can displace outwards, thereby realizing the separation of the outer dies.
Further, the clamping surface 222 of the outer die unit 22 is provided with a clamping step 223, and the clamping step 223 is a connecting surface arranged at an included angle with the radial direction of the core die 21. The matching of the die-closing surface 222 and the die-closing step 223 has a positioning function, namely, when the die is closed, the outer die body 22 can form a complete closed annular die, and the forming cavity 24 meeting the design requirement is formed.
Preferably, as shown in fig. 1-4, the outer circumference of the outer mold monomer 22 is provided with at least two mold frame monomers 23, the inner wall of each mold frame monomer 23 is recessed inwards to form a concave part 231 corresponding to the outer wall of the outer mold monomer 22, each mold frame monomer 23 is abutted against and connected with the outer mold monomer 22 after being folded, and the mold frame driving unit 40 drives each mold frame monomer 23 to move along a path parallel to the opening direction of the concave part 231 to realize folding or separating of the mold frame monomers 23. After the mold frame monomers 23 are folded, the outer mold monomers 22 are wrapped, so that the positioning of the outer mold monomers 22 is further ensured, and the motor shell deformation caused by loosening of the outer mold monomers 22 during compression molding is avoided. The movement path of the mold frame unit 23 is arranged in parallel to the opening direction of the recess 231, so that the mold frame unit 23 can be prevented from interfering with the outer mold unit 22 during separation, the durability of the mold unit 20 is ensured, and the reliability of the molding equipment is improved.
Specifically, the core mold 21 is integrally columnar and connected with the working platform 10, the section of the outer mold monomer 22 is integrally arched, the radial adjacent sides of the mold frame monomers 23 are in abutting connection, and the joint surfaces of the two adjacent mold frame monomers 23 and the joint surfaces of the two adjacent outer mold monomers 22 are arranged in a staggered manner. The arrangement of the die unit 20 is reasonable, as shown in fig. 3, the joint surface of the die frame monomer 23 and the joint surface of the outer die monomer 22 are arranged in a staggered manner, so that the die unit 20 can be prevented from forming a gap penetrating through the forming cavity 24 and the outside, the stress of the die unit 20 is uniform, and the reliability of the die unit in compression forming is improved.
Preferably, the powder metallurgy forming apparatus of the motor housing includes a compacting unit 50 for compacting a billet, the compacting unit 50 includes dies 25 symmetrically disposed at both ends of the die unit 20, the dies 25 are shaped to conform to the forming cavity 24, and the dies 25 are driven by a power unit to move in the axial direction of the core die 21. In specific implementation, after the core mold 21, the outer mold monomer 22 and the mold frame monomer 23 are in a mold clamping state and a proper amount of metallurgical powder is filled in the molding cavity 24, the power unit drives the pressing mold 25 to move in opposite directions, so that the press molding of the motor housing blank can be realized.
Specifically, the outer mold driving unit 30 includes a driving plate 31, a connecting rod 32 is disposed on the driving plate 31, each connecting rod 32 is connected with one outer mold monomer 22, the blank pressing unit 50 includes a pressing plate 51, a pressing rod 52 is disposed on the pressing plate 51 corresponding to the forming chamber 24, a pressing mold 25 is fixedly connected to a free end of the pressing rod 52, a blank pressing hole for passing through the pressing rod 52 and the pressing mold 25 is disposed on the working platform 10, the shape of the blank pressing hole corresponds to that of the pressing mold 25, and a hole for passing through the blank pressing unit 50 is disposed on the driving plate 31.
Preferably, the powder metallurgy forming apparatus of the motor housing further comprises a blank receiving platform 60 for receiving blanks, the blank receiving platform 60 is driven by the power unit to reciprocate along the axial direction or the radial direction of the mandrel 21 beside the free end of the mandrel 21, and the outer die driving unit 30 drives all the outer die monomers 22 to move along the axial direction of the mandrel 21 together. In the embodiment shown in fig. 1, the blank receiving platform 60 is located laterally above the mandrel 21 during blank forming, and in the embodiment shown in fig. 2, the blank receiving platform 60 is located to the left of the mandrel 21 during blank forming. It should be noted that the blank receiving platform 60 should be located at the avoiding position of the movement path of the outer die monomer 22 and the outer die driving unit 30 to ensure smooth demoulding of the blank.
As shown in fig. 1, in the embodiment, after each outer die monomer 22 is folded over the core die 21, the outer die driving unit 30 drives the outer die monomer 22 to move along the axial direction of the core die 21 together with the core die 21 to form the forming cavity 24, then the die frame driving unit 40 drives the die frame monomer 23 to wrap and fix the outer die monomer 22, and then the lower die 25 is driven by the power unit to move upwards to a specified position of the forming cavity 24, and then the powder feeding device is started to convey powder into the forming cavity 24.
After the charging is completed, the compacting unit 50 compresses the powder filled in the forming cavity 24, after the powder is compressed and formed by maintaining the pressure for a certain time, the compacting unit 50 is removed from the pressure and is displaced to the initial position, and then the die frame driving unit 40 is started to drive the die frame single body 23 to be separated from the outer die single body 22.
The outer die body 22 in the closed state and the pressed motor shell blank clamped in the outer die body are moved away from the core die 21 along the axial direction of the core die 21 under the action of the outer die driving unit 30, and are separated from the core die 21, so that the initial demoulding of the motor shell blank is realized. After the outer die monomer 22 is initially demolded, that is, when the outer die monomer 22 and the motor housing blank are positioned above the core die 21, the blank receiving platform 60 is moved between the outer die monomer 22 and the core die 21, and then the outer die driving unit 30 drives the outer die monomer 22 to separate, so that the motor housing blank originally clamped in the outer die monomer 22 falls on the blank receiving platform 60, and finally, the demolding of the motor housing blank is realized, and the press forming of the motor housing blank is completed.
After the motor shell blank formed by compression molding is subjected to vacuum sintering, the structure is more densified, the dimensional accuracy and the appearance quality of the motor shell can be greatly improved, the motor shell blank is particularly suitable for manufacturing complex motor shells, the cutting of materials can be effectively reduced, and the manufacturing cost is reduced while the quality of products is improved.
Claims (6)
1. The utility model provides a powder metallurgy forming equipment of motor casing, includes work platform (10), work platform (10) on be equipped with mould unit (20), its characterized in that: the die unit (20) comprises a core die (21), at least four outer die monomers (22) are arranged on the periphery of the core die (21) in a surrounding mode, the outer die monomers (22) are arranged in pairs, after being folded with each other, the outer die monomers (22) are enclosed with the core die (21) to form a forming cavity (24) for containing metallurgical powder, at least two grooves (221) are respectively arranged on each outer die monomer (22), the notch directions of the grooves (221) on the same outer die monomer (22) are consistent, and the outer die driving unit (30) drives each outer die monomer (22) to move along a path parallel to the notch directions of the grooves (221) to achieve folding or separation of the outer die monomers (22);
the two end faces of the outer die monomer (22) in the circumferential direction of the core die are die clamping faces (222), the outer die monomer (22) comprises at least one group of die locking monomers (22 a) which are oppositely arranged, and the distance between the die clamping faces (222) of the die locking monomers (22 a) on the side close to the core die (21) is smaller than the distance between the die clamping faces on the side far away from the core die (21);
the section of the die locking monomer (22 a) is in a closing state, so that when the outer die monomer (22) is in a closing state, the die locking monomer (22 a) is required to be driven to move outwards, after a gap exists between the die locking monomer (22 a) and the outer die monomer (22) which is adjacently arranged, the locking state of the outer die monomer (22) which is adjacently arranged to the die locking monomer (22 a) can be released, and the outer die monomer (22) which is adjacently arranged to the die locking monomer (22 a) can move outwards, so that the outer die is separated;
The die clamping surface (222) of the outer die monomer (22) is provided with a die clamping step (223), and the die clamping step (223) is a connecting surface which is arranged at an included angle with the radial direction of the core die (21);
The outer periphery of the outer die monomer (22) is annularly provided with at least two die frame monomers (23), the inner wall of each die frame monomer (23) is inwards sunken to form a concave part (231) which is consistent with the outer wall of the outer die monomer (22), the die frame monomers (23) are abutted against and connected with the outer die monomer (22) after being folded, and the die frame driving unit (40) drives each die frame monomer (23) to move along a path which is parallel to the opening of the concave part (231) to realize folding or separating of the die frame monomers (23);
the opening direction of the concave part (231) of the mold frame monomer (23) is consistent with the notch direction of the groove (221) of the mold locking monomer (22 a);
After the outer mold monomers (22) are folded above the core mold (21), the outer mold monomers (22) are driven by the outer mold driving unit (30) to move along the axial direction of the core mold (21) together, and form a forming cavity (24) together with the core mold (21), and then the mold frame driving unit (40) drives the mold frame monomers (23) to wrap and fix the outer mold monomers (22); after the motor shell blank is obtained through compression molding, the die frame driving unit (40) drives the die frame monomer (23) to be separated from the outer die monomer (22), the outer die monomer (22) in a closed state and the motor shell blank which is clamped in the die frame driving unit and compression molded are subjected to movement away from the core die (21) along the axial direction of the core die (21) under the action of the outer die driving unit (30), and when the outer die monomer (22) and the motor shell blank are positioned above the core die (21), the outer die driving unit (30) drives the outer die monomer (22) to be separated to realize demolding of the motor shell blank.
2. The powder metallurgy forming apparatus of a motor housing according to claim 1, wherein: the section of the outer die monomer (22) is arched, the whole die clamping surface (222) is arranged along the radial direction of the core die (21), and the die clamping surfaces (222) of the outer die monomer (22) are mutually abutted and connected when the outer die monomer is in a closed state.
3. The powder metallurgy forming apparatus of a motor housing according to claim 1 or 2, wherein: the core mold (21) is integrally columnar and connected with the working platform (10), the section of the outer mold monomer (22) is integrally arched, the radial adjacent sides of the mold frame monomers (23) are in abutting connection, and the joint surfaces of the two adjacent mold frame monomers (23) and the joint surfaces of the two adjacent outer mold monomers (22) are arranged in a staggered mode.
4. A powder metallurgy forming apparatus for a motor housing according to claim 3, wherein: the die comprises a blank receiving platform (60) for receiving blanks, the blank receiving platform (60) is driven by a power unit to reciprocate along the axial direction or the radial direction of the mandrel (21) at the side of the free end of the mandrel (21), and the outer die driving unit (30) drives all outer die monomers (22) to move along the axial direction of the mandrel (21) together.
5. A powder metallurgy forming apparatus for a motor housing according to claim 3, wherein: comprises a blank pressing unit (50) for pressing blanks, wherein the blank pressing unit (50) comprises pressing dies (25) symmetrically arranged at two ends of a die unit (20), the shape of the pressing dies (25) is matched with that of a forming cavity (24), and the pressing dies (25) are driven by a power unit to move along the axial direction of a mandrel (21).
6. The powder metallurgy forming apparatus of a motor housing according to claim 5, wherein: the outer die driving unit (30) comprises a driving plate (31), connecting rods (32) are arranged on the driving plate (31), each connecting rod (32) is connected with one outer die monomer (22) respectively, each press blank unit (50) comprises a press plate (51), each press plate (51) is provided with a press rod (52) corresponding to a forming cavity (24), the free end of each press rod (52) is fixedly connected with a press die (25), a press blank hole for the press rods (52) and the press dies (25) to penetrate is formed in the working platform (10), the shape of each press blank hole is consistent with that of each press die, and a hole for the press blank unit (50) to penetrate is formed in the driving plate (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711166521.4A CN107671283B (en) | 2017-11-21 | 2017-11-21 | Powder metallurgy forming equipment for motor shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711166521.4A CN107671283B (en) | 2017-11-21 | 2017-11-21 | Powder metallurgy forming equipment for motor shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107671283A CN107671283A (en) | 2018-02-09 |
| CN107671283B true CN107671283B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711166521.4A Active CN107671283B (en) | 2017-11-21 | 2017-11-21 | Powder metallurgy forming equipment for motor shell |
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