CN114653925B - Special-shaped pipeline casting method, gearbox and vehicle - Google Patents
Special-shaped pipeline casting method, gearbox and vehicle Download PDFInfo
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- CN114653925B CN114653925B CN202111665526.8A CN202111665526A CN114653925B CN 114653925 B CN114653925 B CN 114653925B CN 202111665526 A CN202111665526 A CN 202111665526A CN 114653925 B CN114653925 B CN 114653925B
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- special
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- sliding block
- shaped pipe
- shaped
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- 238000005266 casting Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 238000001125 extrusion Methods 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004512 die casting Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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 gearbox housing casting, in particular to a special-shaped pipeline casting method, a gearbox and a vehicle. The special-shaped pipeline casting method comprises the following steps: s1, one end of a special-shaped pipe is installed on a pressing pin of a first die, and the middle part of the special-shaped pipe is supported by a first sliding block; s2, closing the first die and the second die, and enabling a gap to be reserved between the suspension end of the special-shaped pipe and the second sliding block; and S3, starting a hydraulic cylinder of the extrusion pin, pushing the extrusion pin by the hydraulic cylinder, pushing the special-shaped pipe to move towards the second sliding block by the extrusion pin, and simultaneously driving the first sliding block to synchronously move along with the middle part of the special-shaped pipe. According to the special-shaped pipeline casting method, the special-shaped pipe can be kept in a set posture in the die all the time before molten metal is poured through the arrangement of the first sliding block; the special pipe is not disturbed by the clamping action of the first die and the second die, so that the position of the special pipe is deviated from the set position.
Description
Technical Field
The disclosure relates to the technical field of gearbox housing casting, in particular to a special-shaped pipeline casting method, a gearbox and a vehicle.
Background
An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine with the actual running speed of the wheels for optimum performance of the engine. The gearbox can generate different speed ratios between the engine and wheels in the running process of the automobile, so that transmission of different gear speeds is realized.
Because the automatic gearbox has very complex internal part structure and arrangement of parts, the parts are required to be fully cooled, lubricated and oil pressure built by the complicated oil path arrangement.
At present, when a complex oil way is formed on a gearbox shell, a plurality of straight holes are drilled on a casting blank to form mutually communicated straight oil ways, and then unnecessary oil way openings are closed. Therefore, the oil duct processing technology is complex, the processing cost is high, burrs which are difficult to clean are easily generated in drilling holes, meanwhile, the manufacturing difficulty of the die is also high, and replaceable precast pins, precast pin spare parts and a local spot cooling system are additionally added.
Disclosure of Invention
In order to solve the technical problems, the present disclosure provides a special-shaped pipeline casting method, a gearbox and a vehicle.
In a first aspect, the present disclosure provides a method of profiled tubing casting comprising:
s1, one end of a special-shaped pipe is installed on a pressing pin of a first die, and the middle part of the special-shaped pipe is supported by a first sliding block;
s2, closing the first die and the second die, and enabling a gap to be reserved between the suspension end of the special-shaped pipe and the second sliding block;
s3, starting a hydraulic cylinder of the extrusion pin, wherein the hydraulic cylinder pushes the extrusion pin, the extrusion pin pushes the special-shaped pipe to move towards the second sliding block, and meanwhile, the first sliding block is driven to synchronously move along with the middle part of the special-shaped pipe;
s4, fixing the first sliding block when the suspension end of the special-shaped pipe is extruded by the second sliding block;
s5, filling molten metal from a gate between the first die and the second die, and controlling the flow speed of the molten metal at the front section;
s6, applying pressure to the first die and the second die;
s7, pressing the special-shaped pipe into the blank and solidifying the blank.
Optionally, a gap between the suspension end of the special-shaped tube in the step S2 and the second slider is 2mm.
Optionally, in S3, the hydraulic cylinder pushes the extrusion pin to move by 2.2mm, the special-shaped tube is extruded by the first slider and the second slider, and the deformation of the special-shaped tube is controlled to be 0.2mm.
Optionally, the molten metal in S5 is an aluminum liquid.
Optionally, the flow speed of the front-stage aluminum liquid is controlled within 3 m/s.
Optionally, the die casting pressure in S6 is controlled to be 800bar to 1200bar.
In a second aspect, the present disclosure provides a gearbox manufactured using the profiled conduit casting method as described above.
In a third aspect, the present disclosure provides a vehicle employing 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 special-shaped pipeline casting method, the special-shaped pipe can be kept in a set posture in the die all the time before molten metal is poured through the arrangement of the first sliding block; the special-shaped pipe is fixed at the set position by the combined action of the first sliding block, the second sliding block and the extrusion pin, and the special-shaped pipe can be further ensured not to be disturbed by the flow of the molten metal to further ensure the stability of the special-shaped pipe by controlling the flow rate of the molten metal at the front section when the molten metal is poured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of a method of casting a profiled conduit according to an embodiment of the disclosure.
Wherein, 1, special-shaped pipe; 21. a first mold; 22. a second mold; 3. extruding pins; 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, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments 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 otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.
An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine with the actual running speed of the wheels for optimum performance of the engine. The gearbox can generate different speed ratios between the engine and wheels in the running process of the automobile, so that transmission of different gear speeds is realized.
Because the automatic gearbox has very complex internal part structure and arrangement of parts, the parts are required to be fully cooled, lubricated and oil pressure built by the complicated oil path arrangement.
At present, when a complex oil way is formed on a gearbox shell, a plurality of straight holes are drilled on a casting blank to form mutually communicated straight oil ways, and then unnecessary oil way openings are closed. Therefore, the oil duct processing technology is complex, the processing cost is high, burrs which are difficult to clean are easily generated in drilling holes, meanwhile, the manufacturing difficulty of the die is also high, and replaceable precast pins, precast pin spare parts and a local spot cooling system are additionally added.
Based on the above, the embodiment provides a special-shaped pipeline casting method, a gearbox and a vehicle, and the special-shaped pipeline casting method, the gearbox and the vehicle can enable the special-shaped pipeline to keep a set posture in a die all the time before molten metal is poured through the arrangement of the first sliding block; the special-shaped pipe is fixed at the set position by the combined action of the first sliding block, the second sliding block and the extrusion pin, and the special-shaped pipe can be further ensured not to be disturbed by the flow of the molten metal to further ensure the stability of the special-shaped pipe by controlling the flow rate of the molten metal at the front section when the molten metal is poured. The following is a detailed description of the present invention by way of specific examples:
referring to fig. 1, the method for casting a special-shaped pipeline provided in this embodiment includes:
s1, one end of a special pipe 1 is mounted on a pressing pin 3 of a first die 21, the middle part of the special pipe 1 is supported by a first sliding block 41, and the special pipe 1 can be kept in a set posture in the die all the time before molten metal is poured through the arrangement of the first sliding block 41;
s2, the first die 21 and the second die 22 are clamped, and a gap is reserved between the suspension end of the special-shaped pipe 1 and the second sliding block 42, so that the special-shaped pipe 1 is not interfered by the clamping action of the first die 21 and the second die 22, and the position of the special-shaped pipe is deviated from the set position;
s3, starting a hydraulic cylinder 6 of the extrusion pin 3, wherein the hydraulic cylinder 6 pushes the extrusion pin 3, the extrusion pin 3 pushes the special-shaped pipe 1 to move towards the second sliding block 42, meanwhile, the first sliding block 41 is driven to synchronously move along with the middle part of the special-shaped pipe 1, and the special-shaped pipe 1 can be reliably supported by the first sliding block 41 all the time and kept in a set posture in the process of pushing the extrusion pin 3 to move towards the second sliding block 42 by utilizing the cooperation action of the extrusion pin 3, the hydraulic cylinder 6 and the first sliding block 41;
s4, when the free end of the special pipe 1 is extruded by the second sliding block 42, the first sliding block 41 is fixed, and after the free end of the special pipe 1 is propped against the second sliding block 42, the special pipe 1 is fixed at a set position and in a set posture under the combined action of the first sliding block 41, the second sliding block 42 and the extrusion pin 3;
s5, filling molten metal from the pouring gate 5 to the space between the first die 21 and the second die 22, and controlling the flow speed of the molten metal at the front section, so that the design can further ensure that 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 die 21 and the second die 22;
and S7, pressing the special-shaped pipe 1 into the blank and solidifying the blank.
In some embodiments, the gap between the suspended end of the profiled tube 1 and the second slider 42 in S2 is 2mm.
In a further embodiment, in S3, the hydraulic cylinder pushes the extrusion pin 3 to move by 2.2mm, the special-shaped tube 1 is extruded by the first slider 41 and the second slider 42, and the deformation of the special-shaped tube 1 is controlled to be 0.2mm, so that the displacement of the special-shaped tube 1 in the whole casting process is not large, meanwhile, the special-shaped tube 1 is prevented from being interfered by the first slider 41 and the second slider 42, the probability that the special-shaped tube 1 deviates from the set position and changes the set gesture is reduced, and the success rate of casting is remarkably improved.
In some embodiments, the molten metal in S5 is aluminum, and it should be understood that the molten metal may be other molten metal used for casting the gearbox, and may be adjusted according to the production requirements.
In a further embodiment, the flow speed of the aluminum liquid at the front section is controlled within 3m/s, so that the aluminum liquid can be prevented from interfering with the position and the gesture of the special-shaped pipe 1 too much, the casting efficiency can be ensured, and the casting 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 between 800bar and 1200bar.
In a second aspect, the present disclosure provides a gearbox manufactured using the profiled conduit casting method as described above.
In a third aspect, the present disclosure provides a vehicle employing a gearbox as described above.
The specific implementation manner and implementation principle are the same as those of the above embodiment, and the same or similar technical effects can be brought, which are not described in detail herein, and specific reference may be made to the description of the above embodiment of the special-shaped pipeline casting method.
It should be noted that in this document, relational terms such as "first" and "second" and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the 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 and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A method of casting a profiled conduit, comprising:
s1, one end of a special-shaped pipe (1) is installed on an extrusion pin (3) of a first die (21), and the middle part of the special-shaped pipe (1) is supported by a first sliding block (41);
s2, clamping the first die (21) and the second die (22), and enabling a gap to be reserved between the suspension end of the special-shaped pipe (1) and the second sliding block (42), wherein the gap between the suspension end of the special-shaped pipe (1) and the second sliding block (42) is 2mm;
s3, starting a hydraulic cylinder (6) of the extrusion pin (3), pushing the extrusion pin (3) by the hydraulic cylinder (6), pushing the special-shaped pipe (1) to move towards a second sliding block (42) by the extrusion pin (3), and simultaneously driving a first sliding block (41) to synchronously move along with the middle part of the special-shaped pipe (1); the hydraulic cylinder pushes the extrusion pin (3) to move by 2.2mm, the special-shaped pipe (1) is extruded by the first sliding block (41) and the second sliding block (42), and the deformation of the special-shaped pipe (1) is controlled to be 0.2mm;
s4, when the suspension end of the special-shaped pipe (1) is extruded by the second sliding block (42), fixing the first sliding block (41);
s5, filling molten metal from a gate (5) between a first die (21) and a second die (22), and controlling the flow speed of the molten metal at the front section, wherein the molten metal is aluminum, and the flow speed of the molten metal at the front section is controlled within 3 m/S;
s6, applying pressure to the first die (21) and the second die (22), and controlling the die casting pressure to be 800bar to 1200bar;
s7, waiting for solidification.
2. A transmission formed using the profiled conduit casting method of claim 1.
3. A vehicle comprising a gearbox according to claim 2.
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 CN114653925A (en) | 2022-06-24 |
| CN114653925B true 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 |
|---|---|
| CN114653925A (en) | 2022-06-24 |
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