CN110605822A - Method for manufacturing long rod-shaped MIM product in non-shaping state - Google Patents
Method for manufacturing long rod-shaped MIM product in non-shaping state Download PDFInfo
- Publication number
- CN110605822A CN110605822A CN201910695842.6A CN201910695842A CN110605822A CN 110605822 A CN110605822 A CN 110605822A CN 201910695842 A CN201910695842 A CN 201910695842A CN 110605822 A CN110605822 A CN 110605822A
- Authority
- CN
- China
- Prior art keywords
- product
- shaped
- long rod
- gate
- mim product
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000007493 shaping process Methods 0.000 title abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 239000003292 glue Substances 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims description 15
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005238 degreasing Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7486—Clutches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
- F16D2023/141—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings characterised by using a fork; Details of forks
Abstract
The invention discloses a method for manufacturing a long rod-shaped MIM product in a non-plastic state, which adopts high-temperature material double-gate glue feeding, and adds a reinforcing rib in the middle part of a U-shaped port; reverse compensation is added on the die in the vertical direction of the U-shaped opening; a special sintered support plate is used. The invention has the beneficial effects that: 1. the method has strong reference significance for the development of the long rod-shaped product in the MIM process; 2. the product does not need to be shaped, the manufacturing process is reduced, and the manufacturing cost is saved; 3. the failure of the whole vehicle system caused by the breakage or deformation of the internal stress generated by the product due to shaping in the using process is avoided; 4. the cost of the product is reduced by about 50 percent and the product is approved by a client terminal.
Description
Technical Field
The invention relates to a manufacturing method of an MIM product, in particular to a manufacturing method of a long rod-shaped MIM product in a non-shaping state.
Background
The automobile clutch connecting push rod component comprises a straight rod part, one end of the straight rod part is a U-shaped fork part, and the other end of the straight rod part is a ball body. The automobile clutch connecting push rod component is made of 17-4PH stainless steel material, and the length of the product is 100 mm. The following technical problems exist in the production process:
MIM process-low temperature material single gate route: the low-temperature materials need solvent degreasing, the shaping capacity is weak, the products are deformed in the degreasing process, the rod part and the U-shaped opening of the products are seriously deformed, the twisting in all directions is irregular, the shaping is needed, the rod part phi 6 solid with the thickness of 4.0mm is difficult to shape and is easy to generate internal stress, and the risk potential is caused when the host factory loads the vehicle.
2. The machining process comprises the following steps: this product can be machined, but is very expensive.
Disclosure of Invention
The invention discloses a manufacturing method of a long rod-shaped MIM product in a non-shaping state, which aims to solve the problems in the prior art.
The purpose of the invention is realized by the following technical scheme.
The manufacturing method of the long rod-shaped MIM product in the non-plastic state adopts the high-temperature material double-gate glue feeding, and the middle part of the U-shaped port is added with the reinforcing rib; reverse compensation is added on the die in the vertical direction of the U-shaped opening; a special sintered support plate is used.
The first runner in two runners set up in the junction of straight rod portion and U type forked part, the second runner sets up on the spheroid, more specifically, the second runner sets up in the spheroid outside along the axial extension of straight rod portion.
The size of the first gate is 3 multiplied by 2 mm; the size of the second gate was 3 × 4 mm.
The thickness of the reinforcing rib is 2.5 mm.
In the step of increasing reverse compensation, the deformation amount in the sintering deformation direction is 0.07mm, and the compensation amount in the mold reverse compensation direction is 0.007 mm.
The special sintering support plate is a step plate with a higher middle part and lower two sides, the higher step corresponds to the straight rod part, and the width of the higher step is less than or equal to the length of the straight rod part; when the long rod-shaped MIM product is placed on the sintering support plate which is horizontally placed, the straight rod part, the U-shaped fork part and the spherical part are all in contact with the sintering support plate, and the axis of the straight rod part is horizontal.
The invention has the beneficial effects that:
1. the method has strong reference significance for the development of the long rod-shaped product in the MIM process;
2. the product does not need to be shaped, the manufacturing process is reduced, and the manufacturing cost is saved;
3. the failure of the whole vehicle system caused by the breakage or deformation of the internal stress generated by the product due to shaping in the using process is avoided;
4. the cost of the product is reduced by about 50 percent and the product is approved by a client terminal.
Drawings
FIG. 1 is a schematic diagram of a long rod-shaped MIM product according to the present invention;
FIG. 2 is a schematic view of the pour point construction of the present invention;
in the figure, 1, a straight rod part; 2. a U-shaped fork portion; 3. a sphere; 4. a first gate; 5. a second gate; 6. and (5) reinforcing ribs.
Detailed Description
The technical points of the invention are further explained by combining the drawings and the specific embodiments.
As shown in fig. 1, the long rod-shaped MIM product is a push rod component for connecting a clutch of an automobile, and includes a straight rod portion 1, wherein one end of the straight rod portion 1 is a U-shaped fork portion 2, and the other end is a ball 3.
According to the manufacturing method of the long rod-shaped MIM product in the non-plastic state, high-temperature material double-sprue glue feeding is adopted, and reinforcing ribs are added to the middle part of a U-shaped opening; reverse compensation is added on the die in the vertical direction of the U-shaped opening; a special sintered support plate is used.
As shown in fig. 2, a first gate 4 of the dual gates is disposed at a connection portion of the straight rod portion and the U-shaped fork portion, and a second gate 4 is disposed on the sphere, and more specifically, a second gate 5 is disposed on an outer side of the sphere extending along an axial direction of the straight rod portion.
The size of the first gate 4 is 3 multiplied by 2 mm; the size of the second gate 5 is 3 × 4 mm.
The thickness of the reinforcing rib 6 is 2.5 mm.
In the step of increasing reverse compensation, the deformation amount in the sintering deformation direction is 0.07mm, and the compensation amount in the mold reverse compensation direction is 0.007 mm.
The special sintering support plate is a step plate with a higher middle part and lower two sides, the higher step corresponds to the straight rod part, and the width of the higher step is less than or equal to the length of the straight rod part; when the long rod-shaped MIM product is placed on the sintering support plate which is horizontally placed, the straight rod part, the U-shaped fork part and the spherical part are all in contact with the sintering support plate, and the axis of the straight rod part is horizontal.
Adopting high-temperature material double-gate glue feeding: A. the shaping capacity of the high-temperature material is stronger than that of the low-temperature material, deformation is not easy to occur after catalytic degreasing, and a pouring gate is added at the position with the thickest meat at the rod part, so that product deformation, insufficient injection, shrinkage and the like caused by the difference of density of each point of an injection blank due to uneven filling of single-point feeding rubber material and overlong flow channel are improved.
The middle part of the U-shaped opening is added with a reinforcing rib: the mouth part of the U-shaped part can be outwards expanded due to the influence of self-gravity and friction force during sintering, the size of the mouth part of a product can be effectively ensured by adding the reinforcing ribs, and deformation cannot occur.
Adding reverse compensation on the die: the vertical direction of the U-shaped opening can generate the deformation of the shape of the Chinese character 'ba', the rule is consistent, and the deformation amount in the direction can be corrected through the reverse compensation on the die.
Use of a special sintered support plate: because the product is longer, the rod part deforms seriously during sintering and has no regularity. By adopting the special sintering support, irregular deformation of the rod part caused by the influence of self-gravity and friction can be effectively avoided.
Claims (8)
1. The manufacturing method of the long rod-shaped MIM product in the non-plastic state is characterized in that: adopting high-temperature material double-gate glue feeding, and adding reinforcing ribs in the middle part of the U-shaped opening; reverse compensation is added on the die in the vertical direction of the U-shaped opening; a special sintered support plate is used.
2. The method of claim 1 for producing a long rod-like MIM product in an unshaped state, wherein: a first gate in the double gates is arranged at the joint of the straight rod part and the U-shaped fork part, and a second gate is arranged on the ball body.
3. The method of claim 2 for producing a rodlike MIM product in an unshaped state, wherein: the second gate is arranged on the outer side of the ball body extending along the axial direction of the straight rod part.
4. The method of claim 2 for producing a rodlike MIM product in an unshaped state, wherein: the size of the first gate is 3 multiplied by 2 mm; the size of the second gate was 3 × 4 mm.
5. The method of claim 1 for producing a long rod-like MIM product in an unshaped state, wherein: the thickness of the reinforcing rib is 2.5 mm.
6. The method of claim 1 for producing a long rod-like MIM product in an unshaped state, wherein: in the process of increasing the reverse compensation, the deformation in the sintering deformation direction is 0.07mm, and the compensation quantity in the mold reverse compensation direction is 0.007 mm.
7. The method of claim 1 for producing a long rod-like MIM product in an unshaped state, wherein: when the long rod-shaped MIM product is placed on the sintering support plate which is horizontally placed, the straight rod part, the U-shaped fork part and the spherical part are all in contact with the sintering support plate, and the axis of the straight rod part is horizontal.
8. The method of claim 7 for producing a rodlike MIM product in an unshaped state, wherein: the special sintering support plate is a step plate with a higher middle part and lower two sides, the higher step corresponds to the straight rod part, and the width of the higher step is less than or equal to the length of the straight rod part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695842.6A CN110605822A (en) | 2019-07-30 | 2019-07-30 | Method for manufacturing long rod-shaped MIM product in non-shaping state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695842.6A CN110605822A (en) | 2019-07-30 | 2019-07-30 | Method for manufacturing long rod-shaped MIM product in non-shaping state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110605822A true CN110605822A (en) | 2019-12-24 |
Family
ID=68890248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910695842.6A Pending CN110605822A (en) | 2019-07-30 | 2019-07-30 | Method for manufacturing long rod-shaped MIM product in non-shaping state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110605822A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259066A (en) * | 1997-06-03 | 2000-07-05 | 奥比·奥马特和鲍姆加特纳两合公司 | Method for producing an elongated single-piece structural part for spectacles |
| CN102082319A (en) * | 2010-12-14 | 2011-06-01 | 西北工业大学 | Method for correcting moulding surface of forming mould for antenna cover |
| CN105108154A (en) * | 2015-09-21 | 2015-12-02 | 深圳艾利门特科技有限公司 | Method for preparing special-shaped complex part through powder injection molding technology |
| CN207205274U (en) * | 2017-08-31 | 2018-04-10 | 深圳市富优驰科技有限公司 | A kind of MIM techniques runner |
-
2019
- 2019-07-30 CN CN201910695842.6A patent/CN110605822A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259066A (en) * | 1997-06-03 | 2000-07-05 | 奥比·奥马特和鲍姆加特纳两合公司 | Method for producing an elongated single-piece structural part for spectacles |
| CN102082319A (en) * | 2010-12-14 | 2011-06-01 | 西北工业大学 | Method for correcting moulding surface of forming mould for antenna cover |
| CN105108154A (en) * | 2015-09-21 | 2015-12-02 | 深圳艾利门特科技有限公司 | Method for preparing special-shaped complex part through powder injection molding technology |
| CN207205274U (en) * | 2017-08-31 | 2018-04-10 | 深圳市富优驰科技有限公司 | A kind of MIM techniques runner |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20191224 |