CN114653925A - Special-shaped pipeline casting method, gearbox and vehicle - Google Patents
Special-shaped pipeline casting method, gearbox and vehicle Download PDFInfo
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- CN114653925A CN114653925A CN202111665526.8A CN202111665526A CN114653925A CN 114653925 A CN114653925 A CN 114653925A CN 202111665526 A CN202111665526 A CN 202111665526A CN 114653925 A CN114653925 A CN 114653925A
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- sliding block
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005266 casting Methods 0.000 title claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 7
- 238000004512 die casting Methods 0.000 claims description 3
- 230000037228 dieting effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The disclosure relates to the technical field of casting of gearbox shells, in particular to a special-shaped pipeline casting method, a gearbox and a vehicle. The casting method of the special-shaped pipeline comprises the following steps: s1, mounting one end of the special pipe on an extrusion pin of a first die, and supporting the middle part of the special pipe by using a first sliding block; s2, closing the first die and the second die, and enabling a gap to be reserved between the suspended end of the special-shaped pipe and the second sliding block; and S3, starting a hydraulic cylinder of the extrusion pin, enabling the hydraulic cylinder to push the extrusion pin, and driving the extrusion pin to push the special-shaped pipe to move towards the second sliding block and simultaneously drive the first sliding block to move synchronously along with the middle part of the special-shaped pipe. According to the special-shaped pipeline casting method, the first sliding block is arranged, so that the special-shaped pipe can always keep a set posture in a mould before molten metal is poured; the special pipe can be prevented from being interfered by the clamping action of the first die and the second die, and the special pipe can be deviated from the set position.
Description
Technical Field
The disclosure relates to the technical field of casting of gearbox shells, in particular to a special-shaped pipeline casting method, a gearbox and a vehicle.
Background
The automobile gearbox is a set of speed changing devices used for coordinating the rotating speed of an engine and the actual running speed of wheels, and is used for exerting the optimal performance of the engine. The gearbox can generate different gear ratios between an engine and wheels in the running process of the automobile, so that the transmission of different gear rotating speeds is realized.
The automatic transmission also requires a complicated oil path arrangement for sufficient cooling, lubrication and oil pressure building work of parts because the internal part structure and the arrangement of parts are very complicated.
At present, when a complex oil way is arranged on a gearbox shell, a plurality of straight holes are drilled on a casting blank to form mutually communicated straight oil ducts, and then openings of the oil ducts which are not needed are sealed. Therefore, the process for machining the oil duct is complex, the machining cost is high, burrs which are difficult to clean are easily generated in the drilled hole, meanwhile, the manufacturing difficulty of the die is high, and an exchangeable precast pin, a precast pin spare part and a local spot cooling system need to be additionally added.
Disclosure of Invention
In order to solve the technical problem, the present disclosure provides a method for casting a special-shaped pipe, a transmission and a vehicle.
In a first aspect, the present disclosure provides a method for casting a special-shaped pipe, including:
s1, mounting one end of the special-shaped pipe on an extrusion pin of a first die, and supporting the middle part of the special-shaped pipe by using a first sliding block;
s2, closing the first die and the second die, and enabling a gap to be reserved between the suspended end of the special-shaped pipe and the second sliding block;
s3, starting a hydraulic cylinder of the extrusion pin, enabling the hydraulic cylinder to push the extrusion pin, enabling the extrusion pin to push the special-shaped pipe to move towards the second sliding block, and simultaneously driving the first sliding block to move synchronously along with the middle part of the special-shaped pipe;
s4, when the suspended end of the special pipe is extruded by the second sliding block, the first sliding block is fixed;
s5, filling molten metal between the first mold and the second mold from the pouring gate, and controlling the flow speed of the molten metal at the front section;
s6, applying pressure to the first mould and the second mould;
and S7, pressing the special-shaped pipe into the blank and then solidifying the special-shaped pipe.
Optionally, the gap between the free end of the profiled tube in S2 and the second slider is 2 mm.
Optionally, in S3, the hydraulic cylinder pushes the extrusion pin to move by 2.2mm, the special pipe is extruded by the first slide block and the second slide block, and the deformation amount of the special pipe is controlled to be 0.2 mm.
Optionally, the molten metal in S5 is aluminum liquid.
Optionally, the flow speed of the front section of aluminum liquid is controlled within 3 m/s.
Optionally, the pressure of the die casting in S6 is controlled to be 800bar to 1200 bar.
In a second aspect, the present disclosure provides a gearbox manufactured using the profiled tubing casting method as described above.
In a third aspect, the present disclosure provides a vehicle using a gearbox as described above.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the casting method of the special-shaped pipeline, the arrangement of the first sliding block enables the special-shaped pipe to always keep a set posture in the mould before metal liquid is not poured; the clearance is reserved between the suspended end of the special-shaped pipe and the second slide block when the first die and the second die are closed, so that the special-shaped pipe can not be interfered by the closing action of the first die and the second die, therefore, when the position deviates from the set position, the special pipe can be reliably supported by the first slide block all the time in the process of pushing the extrusion pin to the second slide block to move by utilizing the matching action of the extrusion pin, the hydraulic cylinder and the first slide block, and the set posture of the special pipe is continuously kept, after the suspension end of the special pipe is abutted against the second slide block, the special pipe is fixed at a set position in a set posture through the combined action of the first slide block, the second slide block and the extrusion pin, the flow velocity through controlling anterior segment molten metal when pouring molten metal can further guarantee that the special pipe can not disturbed its stability by the flow of molten metal, further guarantees the accuracy of special pipe position and gesture.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic view of a method for casting a profiled pipe according to an embodiment of the present disclosure.
Wherein, 1, a special pipe; 21. a first mold; 22. a second mold; 3. a squeeze pin; 41. a first slider; 42. a second slider; 5. a gate; 6. and a hydraulic cylinder.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
The automobile gearbox is a set of speed changing devices used for coordinating the rotating speed of an engine and the actual running speed of wheels, and is used for exerting the optimal performance of the engine. The gearbox can generate different gear ratios between an engine and wheels in the running process of the automobile, so that the transmission of different gear rotating speeds is realized.
The automatic transmission also requires a complicated oil path arrangement for sufficient cooling, lubrication and oil pressure building work of parts because the internal part structure and the arrangement of parts are very complicated.
At present, when a complex oil way is arranged on a gearbox shell, a plurality of straight holes are drilled on a casting blank to form mutually communicated straight oil ducts, and then openings of the oil ducts which are not needed are sealed. Therefore, the process for machining the oil duct is complex, the machining cost is high, burrs which are difficult to clean are easily generated in the drilled hole, meanwhile, the manufacturing difficulty of the die is high, and an exchangeable precast pin, a precast pin spare part and a local spot cooling system need to be additionally added.
Based on this, the present embodiment provides a method for casting a special-shaped pipe, a transmission case, and a vehicle, which can keep a set posture of a special-shaped pipe in a mold before a molten metal is not poured through the arrangement of a first slider; the clearance is reserved between the suspended end of the special-shaped pipe and the second slide block when the first die and the second die are closed, so that the special-shaped pipe can not be interfered by the closing action of the first die and the second die, therefore, the position deviates from the set position, and the matched action of the extrusion pin, the hydraulic cylinder and the first slide block can ensure that the special-shaped pipe is reliably supported by the first slide block all the time in the process of pushing the extrusion pin to the second slide block to move so as to continuously keep the set posture of the special-shaped pipe, after the suspension end of the special pipe is abutted against the second slide block, the special pipe is fixed at a set position in a set posture through the combined action of the first slide block, the second slide block and the extrusion pin, the flow velocity through controlling anterior segment molten metal when pouring molten metal can further guarantee that the special pipe can not disturbed its stability by the flow of molten metal, further guarantees the accuracy of special pipe position and gesture. This is illustrated in detail by the following specific examples:
referring to fig. 1, the method for casting a special-shaped pipe according to the present embodiment includes:
s1, the one end of the special-shaped pipe 1 is mounted on the extrusion pin 3 of the first die 21, the middle part of the special-shaped pipe 1 is supported by the first slide block 41, and the special-shaped pipe 1 can always keep the set posture in the die before the metal liquid is poured through the arrangement of the first slide block 41;
s2, clamping the first mold 21 and the second mold 22, and keeping a gap between the free end of the special-shaped pipe 1 and the second slider 42, so that the special-shaped pipe 1 is not interfered by the clamping action of the first mold 21 and the second mold 22, and the position is deviated from the set position;
s3, starting the hydraulic cylinder 6 of the extrusion pin 3, enabling the hydraulic cylinder 6 to push the extrusion pin 3, enabling the extrusion pin 3 to push the special-shaped pipe 1 to move towards the second slide block 42, simultaneously driving the first slide block 41 to synchronously move along with the middle part of the special-shaped pipe 1, and enabling the special-shaped pipe 1 to be reliably supported by the first slide block 41 all the time in the process of pushing the extrusion pin 3 to the second slide block 42 to move by utilizing the matching action of the extrusion pin 3, the hydraulic cylinder 6 and the first slide block 41, and continuously keeping the set posture of the special-shaped pipe;
s4, when the hanging end of the special-shaped pipe 1 is pressed by the second slide block 42, the first slide block 41 is fixed, and after the hanging end of the special-shaped pipe 1 is pressed against the second slide block 42, the special-shaped pipe 1 is fixed at the set position in the set posture through the combined action of the first slide block 41, the second slide block 42 and the pressing pin 3;
s5, filling molten metal between the first die 21 and the second die 22 from the gate 5, and controlling the flow speed of the molten metal at the front section, so that the design can further ensure that the stability of the special-shaped pipe 1 cannot be disturbed by the flow of the molten metal, and further ensure the accuracy of the position and the posture of the special-shaped pipe 1;
s6, applying pressure to the first mold 21 and the second mold 22;
s7, pressing the special-shaped pipe 1 into the blank and then solidifying the special-shaped pipe.
In some embodiments, the gap between the free end of the profiled tube 1 and the second slider 42 in S2 is 2 mm.
In a further embodiment, in S3, the hydraulic cylinder pushes the extrusion pin 3 to move by 2.2mm, the special-shaped pipe 1 is extruded by the first slider 41 and the second slider 42, and the deformation amount of the special-shaped pipe 1 is controlled to be 0.2mm, so that the displacement of the special-shaped pipe 1 in the whole casting process can be ensured to be small, the special-shaped pipe 1 can be prevented from being interfered by the first slider 41 and the second slider 42, the probability that the special-shaped pipe 1 deviates from the set position and changes the set posture can be reduced by reducing the formation of the special-shaped pipe 1, and the casting success rate can be remarkably improved.
In some embodiments, the molten metal in S5 is molten aluminum, and it should be understood that the molten metal may be other molten metal for casting the transmission case, and may be adjusted according to production requirements.
In a further embodiment, the flowing speed of the front section of aluminum liquid is controlled within 3m/s, so that the position and posture of the special-shaped pipe 1 can be prevented from being interfered too much by the aluminum liquid, the casting efficiency can be ensured, and it needs to be explained that the pouring speed of the aluminum liquid can be properly increased after the special-shaped pipe 1 tends to be in a stable state in the aluminum liquid, so that the production efficiency is improved.
In some embodiments, the die casting pressure in S6 is controlled at 800bar to 1200 bar.
In a second aspect, the present disclosure provides a gearbox manufactured using the profiled tubing casting method as described above.
In a third aspect, the present disclosure provides a vehicle using a gearbox as described above.
The specific implementation manner and the implementation principle are the same as those of the above embodiment, and can bring the same or similar technical effects, and are not described in detail herein, and reference may be made to the description of the above embodiment of the method for casting the special-shaped pipe.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method for casting a special-shaped pipeline is characterized by comprising the following steps:
s1, one end of the special pipe (1) is arranged on the extrusion pin (3) of the first die (21), and the middle part of the special pipe (1) is supported by using a first sliding block (41);
s2, closing the first die (21) and the second die (22) and keeping a gap between the suspended end of the special-shaped pipe (1) and the second sliding block (42);
s3, starting a hydraulic cylinder (6) of the extrusion pin (3), enabling the hydraulic cylinder (6) to jack the extrusion pin (3), enabling the extrusion pin (3) to push the special-shaped pipe (1) to move towards a second sliding block (42), and simultaneously driving a first sliding block (41) to move synchronously along with the middle part of the special-shaped pipe (1);
s4, when the suspended end of the special pipe (1) is extruded by the second sliding block (42), the first sliding block (41) is fixed;
s5, filling molten metal between the first mold (21) and the second mold (22) from the gate (5), and controlling the flowing speed of the molten metal at the front section;
s6, applying pressure to the first die (21) and the second die (22);
s7, pressing the special pipe (1) into the blank and then solidifying the blank.
2. Profile tube casting method according to claim 1, characterized in that the gap between the free end of the profile tube (1) and the second slide (42) in S2 is 2 mm.
3. The profile tube casting method according to claim 2, wherein in S3, the hydraulic cylinder pushes the extrusion pin (3) to move by 2.2mm, the profile tube (1) is extruded by the first slider (41) and the second slider (42), and the deformation amount of the profile tube (1) is controlled to be 0.2 mm.
4. The special-shaped pipeline casting method as claimed in claim 1, wherein the molten metal in the S5 is molten aluminum.
5. The special-shaped pipeline casting method as claimed in claim 4, wherein the flow speed of the front-stage aluminum liquid is controlled within 3 m/s.
6. The profile tube casting method according to claim 1, wherein the die casting pressure in S6 is controlled at 800 to 1200 bar.
7. A gearbox formed using the contour casting method of any of claims 1 to 6.
8. A vehicle comprising a gearbox according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111665526.8A CN114653925B (en) | 2021-12-31 | 2021-12-31 | Special-shaped pipeline casting method, gearbox and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111665526.8A CN114653925B (en) | 2021-12-31 | 2021-12-31 | Special-shaped pipeline casting method, gearbox and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114653925A true CN114653925A (en) | 2022-06-24 |
| CN114653925B CN114653925B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111665526.8A Active CN114653925B (en) | 2021-12-31 | 2021-12-31 | Special-shaped pipeline casting method, gearbox and vehicle |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107030503A (en) * | 2017-05-24 | 2017-08-11 | 漳州市贵安机械工业有限公司 | A kind of special piece fixing device |
| CN207238812U (en) * | 2017-10-11 | 2018-04-17 | 重庆万创无缝钢管制造有限公司 | Shape tube straightener |
| CN208772421U (en) * | 2018-08-23 | 2019-04-23 | 成都奥兴汽配制造有限公司 | A kind of high-pressure oil duct pressurizing mold |
| CN210966861U (en) * | 2019-09-18 | 2020-07-10 | 浙江灿根智能科技有限公司 | Mould is used in casting of special-shaped pipe fitting |
| CN211868146U (en) * | 2020-01-17 | 2020-11-06 | 中交一航局第三工程有限公司 | Special-shaped core mould capable of being assembled by double-hole prefabricated component |
-
2021
- 2021-12-31 CN CN202111665526.8A patent/CN114653925B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107030503A (en) * | 2017-05-24 | 2017-08-11 | 漳州市贵安机械工业有限公司 | A kind of special piece fixing device |
| CN207238812U (en) * | 2017-10-11 | 2018-04-17 | 重庆万创无缝钢管制造有限公司 | Shape tube straightener |
| CN208772421U (en) * | 2018-08-23 | 2019-04-23 | 成都奥兴汽配制造有限公司 | A kind of high-pressure oil duct pressurizing mold |
| CN210966861U (en) * | 2019-09-18 | 2020-07-10 | 浙江灿根智能科技有限公司 | Mould is used in casting of special-shaped pipe fitting |
| CN211868146U (en) * | 2020-01-17 | 2020-11-06 | 中交一航局第三工程有限公司 | Special-shaped core mould capable of being assembled by double-hole prefabricated component |
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| Publication number | Publication date |
|---|---|
| CN114653925B (en) | 2024-04-09 |
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