CN107377980B - Threaded connection connecting rod body for new energy automobile and preparation method thereof - Google Patents
Threaded connection connecting rod body for new energy automobile and preparation method thereof Download PDFInfo
- Publication number
- CN107377980B CN107377980B CN201710725055.2A CN201710725055A CN107377980B CN 107377980 B CN107377980 B CN 107377980B CN 201710725055 A CN201710725055 A CN 201710725055A CN 107377980 B CN107377980 B CN 107377980B
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- Prior art keywords
- threaded
- threaded rod
- outer sleeve
- sintering
- threaded connection
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- 238000002360 preparation method Methods 0.000 title abstract description 5
- 238000005245 sintering Methods 0.000 claims description 37
- 238000007514 turning Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000003754 machining Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 15
- 238000004663 powder metallurgy Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/06—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of threaded articles, e.g. nuts
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
- B22F3/162—Machining, working after consolidation
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16B1/02—Means for securing elements of mechanisms after operation
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention relates to the field of powder metallurgy mechanical parts, in particular to a threaded connection connecting rod body for a new energy automobile and a preparation method thereof. Contain the threaded rod, the threaded rod rear contains connecting portion, and connecting portion contains and connects outer edge, contains the axle sleeve on connecting outer edge, still contains the connecting piece, and the connecting piece contains the inner wall screw thread of outer sleeve, and the threaded rod can be connected as whole with connecting piece inner wall screw thread, the connecting piece outside contains the outer sleeve, and the outer sleeve inner wall contains the screw thread, and the screw thread of outer sleeve inner wall can dock with the external edge screw thread of connecting rod. The beneficial effects are that: this patent adopts powder spare connecting rod body threaded connection, the screw thread structure of the inside of this department, the screw thread installation of outer sleeve, is different from traditional round pin and pinhole connection, and stability and security are better.
Description
Technical Field
The invention relates to the field of machinery, in particular to a threaded connection connecting rod body for a new energy automobile and a preparation method thereof.
Background
The new energy automobile is a main direction of future development of the automobile industry, can realize energy conservation and emission reduction, and has remarkable effect on environmental protection. The powder metallurgy technology is utilized to develop the mechanical properties of products in individual fields to structural manufacturing by virtue of the unique processing economy and the special forming mode. The steel blank of the conventional manufacturing technology is subjected to precision forging, machining, heat treatment and the like, particularly the connecting part is too thin, and the brittleness after the heat treatment is large, so that the high strength requirement of the connecting rod body cannot be met. The invention provides a manufacturing technology for production by adopting a powder metallurgy process, which simplifies the manufacturing flow, reduces the processing and manufacturing cost and improves the mechanical property of parts.
The installation stability is also very critical, especially in the field of bumpy automobiles, the reliability of mechanical connection is directly related to the safety performance of the whole automobile, and the threaded rod is a great potential safety hazard to the automobile after loosening.
Disclosure of Invention
The purpose of the invention is that: in order to provide a threaded connection connecting rod body for a new energy automobile with better effect and a preparation method thereof, the specific purpose is to achieve a plurality of substantial technical effects in the specific implementation part.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a threaded connection connecting rod body for new energy automobile, its characterized in that contains the threaded rod, and the threaded rod rear contains connecting portion, and connecting portion contains the connection outer edge, contains the connection straight-bar after connecting the outer edge, and the connecting piece contains the inner wall screw thread, and the threaded rod can carry out threaded connection with the connecting piece inner wall screw thread and be whole, the connecting piece contains the outer sleeve, and the outer sleeve inner wall contains the screw thread, and the screw thread of outer sleeve inner wall can carry out threaded butt joint with the threaded rod, and the connecting axle sleeve of connecting rod body is connected with the rotation axis.
The invention further adopts the technical scheme that a straight rod is arranged behind the threaded rod.
The invention further adopts the technical scheme that the rear of the threaded rod is provided with a circular connecting shaft sleeve.
The invention further adopts the technical scheme that the threads of the threaded rod are in threaded connection with the inner wall of the outer sleeve of the connecting piece.
The invention further adopts the technical scheme that the connecting sleeve further comprises a threaded rod and a connecting shaft sleeve which are mutually perpendicular, namely, the connecting rod body can be used for connecting the outer sleeve and the connecting piece in the perpendicular direction after the threaded rod is connected with the connecting shaft sleeve.
The manufacturing method of the threaded connection connecting rod body for the new energy automobile is characterized in that the threaded rod is manufactured by adopting the following method,
a mixing step of uniformly mixing the prepared raw materials;
forming step, density of formed blank: 6.95-7.0g/cm of vigour;
a pre-sintering step, namely placing the pressed compact into a Gao Wenwang belt sintering furnace, wherein the sintering temperature is set as follows: preheating temperature (500 ℃ +/-20 ℃,600 ℃ +/-20 ℃,700 ℃ +/-20 ℃,750 ℃ +/-20 ℃) and sintering temperature (980 ℃ +/-10 ℃ );
rough machining, namely turning two end faces, drilling and turning threads;
and a sintering hardening step, wherein the coarse workpiece is sintered in a high-temperature sintering hardening furnace, and the sintering temperature is set as follows: preheating temperature (500 ℃ +/-20 ℃,600 ℃ +/-20 ℃,700 ℃ +/-20 ℃,750 ℃ +/-20 ℃) sintering temperature (1125 ℃ +/-10 ℃ ) and cooling speed of 4 ℃/S;
finish machining, namely finish turning the two end surfaces and the inner hole.
The invention further adopts the technical scheme that the prepared raw materials are as follows: hp1+graphite+copper powder.
The invention further adopts the technical scheme that the protective atmosphere in the sintering process is as follows: and (3) nitrogen-hydrogen mixed gas.
The further technical scheme of the invention is that the sintering hardening cooling speed is 4 ℃/S, and the hardness is HRC30-35.
Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: compare in the condition that original link body adopted the pinhole to connect, this patent adopts threaded connection installation, and when the installation, threaded rod rotation and telescopic inner wall screw thread butt joint installation of connecting piece, later, link body coupling sleeve and rotation axis are connected the installation, and note that original installation is only the pinhole connection of a cylindric lock and straight-bar, under jolting environment, is not hard up easily, causes the potential safety hazard, the screw thread structure of the inside of this department, the screw thread installation of outer sleeve, the two constitutes dual insurance, the security is better.
Drawings
For further explanation of the invention, reference is made to the following further description, taken in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of a first embodiment of a connector;
FIG. 2 is a schematic view of the original structure of the connecting portion;
FIG. 3 is a modified schematic view of the connecting portion;
FIG. 4 is a schematic view of the construction of the outer sleeve;
FIG. 5 is a schematic view of a second embodiment of a connector;
wherein: 1. connecting the outer edges; 2. a threaded rod; 3. connecting a straight rod; 4. a connecting shaft sleeve; 5. cylindrical pin 6. Outer sleeve inner wall screw 7. Outer sleeve.
The figure is a schematic diagram of the main component components of the device, and does not represent the external dimension, the connection mode, the assembly mode, the position relation and the like of the invention, and the figure omits part of manual valves, pipe fittings and the like.
Detailed Description
The present invention is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the invention and not limiting the scope of the invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
The novel energy automobile is with threaded connection connecting rod body, its characterized in that contains threaded rod 2, and threaded rod 2 rear contains connecting portion, and connecting portion contains and connects outer edge 1, contains and connects straight-bar 3, connecting axle sleeve 4 after connecting outer edge 1, still contains connecting piece outer sleeve 7, and the outer sleeve contains outer sleeve inner wall screw thread 6, and the threaded rod can be with connecting piece inner wall screw thread threaded connection as whole, the connecting piece outside contains outer sleeve 7, and outer sleeve inner wall contains the screw thread, and the screw thread of outer sleeve inner wall can dock with threaded rod 2. The technical scheme has the substantial technical effects and the realization process as follows: compare in the condition of original link body cylinder pin 5 direct mount, this patent adopts threaded connection installation, and in the time of the installation, threaded rod 2 is rotatory and connecting piece outer sleeve inner wall screw thread butt joint installation, and then, the connecting axle sleeve 4 of the link body is connected with the rotation axis and is installed, and note that original installation is only a cylindric lock and the pinhole connection of straight-bar, under jolting environment, is not hard up easily, causes the potential safety hazard, the screw thread structure of the inside of this department, the screw thread installation of outer sleeve, the two constitutes double insurance, the security is better.
A straight rod is arranged behind the threaded rod 2. With reference to fig. 5, the essential technical effects and implementation procedures of the technical solution of the present invention are as follows: the straight bar can be one of the specific implementation structures.
The rear of the threaded rod 2 is connected with a shaft sleeve structure in a circular ring shape. See fig. 1 for such an implementation.
The thread of the threaded rod 2 is in threaded connection with the inner wall thread 6 of the outer sleeve 7. The technical scheme has the substantial technical effect that the structure realizes thread fixation, namely, the installation direction of the outer sleeve is vertical to the installation direction of the threaded rod connecting shaft sleeve, and the connection of the outer sleeve and the vertical direction of the rotating shaft can be realized. The threaded connection has better stability and reliability than the original connection (figure 2). The manufacturing method of the threaded connection connecting rod body for the new energy automobile is characterized in that the threaded rod is manufactured by adopting the following method.
A mixing step of uniformly mixing the prepared raw materials;
forming step, density of formed blank: 6.95-7.0g/cm of vigour;
a pre-sintering step, namely placing the pressed compact into a Gao Wenwang belt sintering furnace, wherein the sintering temperature is set as follows: preheating temperature 500 ℃ +/-20 ℃,600 ℃ +/-20 ℃,700 ℃ +/-20 ℃,750 ℃ +/-20 ℃, sintering temperature 980 ℃ +/-10 ℃,980 ℃ +/-10 ℃;
rough machining, namely turning two end faces, drilling and turning threads;
and a sintering hardening step, wherein the coarse workpiece is sintered in a high-temperature sintering hardening furnace, and the sintering temperature is set as follows: preheating temperature 500 ℃ +/-20 ℃,600 ℃ +/-20 ℃,700 ℃ +/-20 ℃,750 ℃ +/-20 ℃, sintering temperature 1125 ℃ +/-10 ℃,1125 ℃ +/-10 ℃ and cooling speed 4 ℃/S;
finish machining, namely finish turning the two end surfaces and the inner hole.
The method comprises the following specific steps:
(1) a mixing procedure, wherein the prepared raw materials are uniformly mixed according to a material formula;
(2) forming process, density: 6.95-7.0g/cm of the strain, and the density difference is less than or equal to 0.02 g/cm of the strain;
(3) a pre-sintering step, namely placing the pressed compact into a Gao Wenwang belt sintering furnace, wherein the sintering temperature is set as follows: preheating temperature (500 ℃ +/-20 ℃,600 ℃ +/-20 ℃,700 ℃ +/-20 ℃,750 ℃ +/-20 ℃) sintering temperature (980 ℃ +/-10 ℃ ) and nitrogen-hydrogen mixed gas as protective atmosphere.
(4) Rough machining, turning two end faces, drilling and turning threads. The external thread axis is required to deviate from the disc center line by 4 + -0.02.
(5) And a sintering hardening step, wherein the coarse workpiece is sintered in a high-temperature sintering hardening furnace, and the sintering temperature is set as follows: preheating temperature (500 ℃ + -20 ℃,600 ℃ + -20 ℃,700 ℃ + -20 ℃,750 ℃ + -20 ℃), sintering temperature (1125 ℃ + -10 ℃ ) and cooling rate of 4 ℃/S.
Finish machining, namely finish turning the two end surfaces and the inner hole.
After the threaded connection connecting rod body is tested, the performances in the above embodiments can meet the technical requirements, and the raw material utilization rate is improved due to the adoption of the powder metallurgy sintering hardening production process, so that the mechanical properties superior to those of the traditional steel piece are obtained.
The effects are independently provided, and the combination of the effects can be achieved by a set of structures.
The technical effect that above structure realized realizes clearly, if not considering additional technical scheme, this patent name can also be an internal and external screw thread connection structure. Some details are not shown in the figures.
It should be noted that, the multiple schemes provided in this patent include the basic schemes of itself, are independent of each other and are not restricted to each other, but they can also be combined with each other under the condition of no conflict, so as to achieve multiple effects together.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing description merely illustrates the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (6)
1. The novel energy automobile is with threaded connection connecting rod body, and is characterized by comprising a threaded rod (2), wherein the rear of the threaded rod (2) comprises a connecting part, the connecting part comprises a connecting outer edge (1), the rear of the connecting outer edge (1) comprises a connecting straight rod (3), the connecting piece comprises an inner wall thread, the threaded rod can be in threaded connection with the inner wall thread of the connecting piece into a whole, the connecting piece comprises an outer sleeve, the inner wall of the outer sleeve comprises threads, the threads of the inner wall of the outer sleeve can be in threaded butt joint with the threaded rod (2), and a connecting shaft sleeve (4) of the connecting rod body is connected with a rotating shaft;
the threaded rod is prepared by a method,
a mixing step of uniformly mixing the prepared raw materials;
forming step, density of formed blank: 6.95-7.0g/cm of vigour;
a pre-sintering step, namely placing the pressed compact into a Gao Wenwang belt sintering furnace, wherein the sintering temperature is set as follows: the preheating temperature is 500 ℃ +/-20 ℃,600 ℃ +/-20 ℃,700 ℃ +/-20 ℃,750 ℃ +/-20 ℃ and the sintering temperature is 980 ℃ +/-10 ℃ in sequence;
rough machining, namely turning two end faces, drilling and turning threads;
and a sintering hardening step, wherein the coarse workpiece is sintered in a high-temperature sintering hardening furnace, and the sintering temperature is set as follows: the preheating temperature is 500 ℃ +/-20 ℃,600 ℃ +/-20 ℃,700 ℃ +/-20 ℃,750 ℃ +/-20 ℃, the sintering temperature is 1125 ℃ +/-10 ℃ and the cooling speed is 4 ℃/S;
finish machining, namely finish turning two end surfaces and an inner hole;
the prepared raw materials are as follows: hp1+graphite+copper powder;
protective atmosphere in the sintering process: and (3) nitrogen-hydrogen mixed gas.
2. The threaded connection connecting rod body for the new energy automobile according to claim 1, wherein a straight rod is arranged behind the threaded rod (2).
3. The threaded connection link body for new energy vehicles according to claim 1, characterized by the fact that the threaded rod (2) is followed by a circular connecting sleeve (4).
4. The threaded connection link body for new energy vehicles according to claim 1, characterized in that the threads of the threaded rod (2) are connected with the threads (6) of the inner wall of the outer sleeve of the connection piece.
5. The threaded connecting rod body for the new energy automobile according to claim 1, further comprising a threaded rod (2) and a connecting shaft sleeve (4) which are perpendicular to each other, namely, the connecting rod body can connect the outer sleeve with the connecting piece in the perpendicular direction after the threaded connection.
6. The threaded connection link body for a new energy automobile as claimed in claim 1, wherein: the cooling speed of sintering hardening is 4 ℃/S, and the hardness is HRC30-35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725055.2A CN107377980B (en) | 2017-08-22 | 2017-08-22 | Threaded connection connecting rod body for new energy automobile and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725055.2A CN107377980B (en) | 2017-08-22 | 2017-08-22 | Threaded connection connecting rod body for new energy automobile and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107377980A CN107377980A (en) | 2017-11-24 |
| CN107377980B true CN107377980B (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710725055.2A Active CN107377980B (en) | 2017-08-22 | 2017-08-22 | Threaded connection connecting rod body for new energy automobile and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107377980B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843418A (en) * | 2021-09-28 | 2021-12-28 | 上海汽车变速器有限公司 | Forming process of automobile transmission signal wheel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3468603B2 (en) * | 1995-01-09 | 2003-11-17 | 日立粉末冶金株式会社 | Method for manufacturing sintered connecting rod |
| US10377477B2 (en) * | 2011-12-28 | 2019-08-13 | Bell Helicopter Textron Inc. | Adjustable pitch link |
| DE102014001248A1 (en) * | 2014-02-03 | 2015-08-06 | Gkn Sinter Metals Engineering Gmbh | Connecting rod and piston assembly with a connecting rod with ball head |
| CN207372292U (en) * | 2017-08-22 | 2018-05-18 | 山西东睦华晟粉末冶金有限公司 | New-energy automobile is threadedly coupled gonnecting rod body |
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2017
- 2017-08-22 CN CN201710725055.2A patent/CN107377980B/en active Active
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| Publication number | Publication date |
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| CN107377980A (en) | 2017-11-24 |
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