CN115091145A - Machining method for casting turbine of supercharger - Google Patents
Machining method for casting turbine of supercharger Download PDFInfo
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- CN115091145A CN115091145A CN202210910185.4A CN202210910185A CN115091145A CN 115091145 A CN115091145 A CN 115091145A CN 202210910185 A CN202210910185 A CN 202210910185A CN 115091145 A CN115091145 A CN 115091145A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/006—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine wheels
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Abstract
The invention relates to the technical field of machining, in particular to a machining method for a turbocharger casting turbine, which comprises the steps of roughly turning the outer circle and the end face of a welding end of a turbine blank; the outer circle of the welding end of the soft three-jaw clamp turbine blank is flattened; roughly turning an end face and punching a central hole; grinding the turbine blank by taking the central hole as a reference; cutting the length of the outer circle of the welding end of the rough turning turbine blank; the turbine machining method comprises the steps of clamping a turbine blank welding end by adopting soft three claws, roughly turning an excircle and an end face of a machined non-welding end by adopting the same requirement as an excircle of a roughly turned welding face, machining a central hole on the end face of the non-welding end, and carrying out subsequent machining operation by taking the central hole as a reference, so that the center of the turbine is consistent with the center during subsequent friction welding, and the problem that the center of the turbine is inconsistent with the center during subsequent friction welding due to the fact that the welding end is not clamped during turbine machining is solved.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a machining method for a turbocharger casting turbine.
Background
The turbine is an important part of a marine diesel engine of a main power device of a ship, and the technical level of a supercharger cast turbine directly influences the working efficiency of the marine diesel engine.
When the existing turbine is used for processing a non-welding surface, the welding surface end of the turbine is not clamped, so that the center of the turbine is inconsistent with the center of the turbine during subsequent friction welding.
Disclosure of Invention
The invention aims to provide a machining method for a casting turbine of a supercharger, and aims to solve the problem that the center of the turbine is inconsistent with the center of the turbine during subsequent friction welding because a welding end is not clamped during turbine machining.
In order to achieve the purpose, the invention provides a machining method for a casting turbine of a supercharger, which comprises the following steps:
roughly turning the outer circle and the end face of the welding end of the turbine blank;
clamping the outer circle of the welding end of the turbine blank by using a soft three-jaw clamp;
ejecting a central hole on the end surface after rough turning;
grinding the turbine blank by taking the central hole as a reference;
cutting the outer circle length of the welding end of the roughly turned turbine blank;
and finely turning the welding end of the turbine blank to obtain a finished turbine.
Wherein, after the step of finish turning the turbine blank welding end to obtain a finished turbine, the method further comprises: and welding the main shaft and the welding end of the finished turbine, and performing dynamic balance treatment.
The rough turning of the excircle and the end face of the welding end of the turbine blank is carried out in the following specific mode:
clamping the outer circle of the welding end of the turbine blank by three claws, and aligning the outer circle and the end face;
and (4) punching a central hole on the light-emitting end surface, and roughly turning a turbine blank.
The specific mode of ejecting the center hole on the end face after rough turning is as follows:
ejecting out a center hole, and emitting a high point of the end surface;
and (5) emitting light out of the outer circle and the end face.
Wherein, finish turning turbine blank welded end obtains the concrete mode of finished product turbine:
clamping the outer circle of the welding end of the turbine blank by a soft three-jaw clamp;
and (5) aligning the excircle and the end face of the non-welding end and finish turning.
The invention relates to a machining method for a casting turbine of a supercharger, wherein the outer circle and the end face of a welding end of a turbine blank are roughly turned; clamping the outer circle of the welding end of the turbine blank by using a soft three-jaw clamp; ejecting a central hole on the end face after rough turning; grinding the turbine blank by taking the central hole as a reference; cutting the length of the outer circle of the welding end of the rough turning turbine blank; the turbine machining method comprises the steps of clamping the welding end of a turbine blank by adopting soft three claws, roughly machining the excircle and the end face of a machined non-welding end by adopting the same requirement as the excircle of a roughly-machined welding surface, machining a central hole in the end face of the non-welding end, and performing subsequent machining operation by taking the central hole as a reference, so that the center of the turbine is consistent with the center during subsequent friction welding, and the problem that the welding end is not clamped during turbine machining, and the center of the turbine is inconsistent with the center during subsequent friction welding is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method of machining a cast turbocharger turbine provided by the present invention.
FIG. 2 is a schematic view of the outer circle and end face of the rough turned turbine blank weld end.
FIG. 3 is a schematic view of the outer circle of the welding end of the soft three-jaw clamp of the turbine blank and the center hole of the top of the end face after rough turning.
FIG. 4 is a schematic illustration of the grinding of the turbine blank with reference to the central bore.
FIG. 5 is a schematic view of the finish turning of the turbine blank weld end to yield a finished turbine.
FIG. 6 is a schematic view of a turbo-process.
FIG. 7 is a schematic view of the spindle being welded to the finished turbine weld end and being dynamically balanced.
Figure 8 is a machining process card.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 to 8, the present invention provides a machining method for a casting turbine of a turbocharger, including the following steps:
s1 roughly turning the outer circle and the end face of the welding end of the turbine blank;
specifically, in order to control the deviation between the turbine rotation center and the turbine mass center and reduce the residual unbalance of the turbine shaft after welding, the outer circle of the turbine blank is mainly aligned when the outer circle of the turbine blank is machined, that is, the outer circle of the runner is aligned by taking the runner as an alignment reference (the main reason is that according to the analysis of the turbine structure, most of the mass of the turbine is in the solid part in the runner, and the deviation between the turbine rotation center and the turbine mass center can be reduced as much as possible by taking the runner as the alignment reference), and meanwhile, a center hole is machined in the end face of the turbine blank.
The specific mode is as follows:
s11, clamping the outer circle of the welding end of the turbine blank by three claws, and aligning the outer circle and the end face;
and S12, drilling a central hole on the light-emitting end surface, and roughly turning the turbine blank.
Specifically, light-out: the surface or the excircle to be processed is processed completely by adopting a mechanical processing mode, and the original trace before processing is not allowed to exist on the whole end surface or the excircle after processing.
S2 clamping the outer circle of the welding end of the turbine blank by the soft three claws;
s3 ejecting a center hole on the end face after rough turning;
the specific mode is as follows:
s31, ejecting a center hole and a light-emitting end face high point;
s32 light out the external circle and end face.
S4, grinding the turbine blank by taking the central hole as a reference;
specifically, the center hole roughly machined by rough turning is used as a clamping and positioning reference, the center holes at two ends of the top are used for grinding the excircle of the non-welding end, the excircle of the blade and the end face of the blade at the welding end. Grinding the excircle of the non-welding end is mainly used as a clamping reference during subsequent finish turning of the welding end; the end face of the blade at the grinding and welding end is mainly used as an alignment reference when the welding end is finely turned subsequently; the large excircle at the blade grinding position is mainly used for alignment reference when a subsequent finish turning welding surface is carried out and tool positioning when friction welding is carried out (the turbine and the optical axis are concentric during welding so as to reduce the unbalance amount of the turbine shaft after welding).
S5 cutting the outer circle length of the welding end of the rough turning turbine blank;
specifically, the excess length of the outer circle of the welding end of the turbine blank is cut by adopting a linear cutting mode (namely, a process chuck reserved in casting is cut, and the length of the process chuck is about 20 mm). The process chuck is reserved for clamping the outer circle and the end face of a non-welding end in turning, the final length of the outer circle of the welding end is only 1mm according to the requirement of a turbine machining drawing, the outer circle and the end face of the non-welding end can only be clamped, the welding end cannot be clamped due to the fact that the blades are discontinuous and in a blank state, the outer circle of the welding face can only be clamped, the clamping length is insufficient according to the drawing size, the outer circle of the welding face is lengthened in casting, and the process chuck is reserved for clamping. Meanwhile, as the turbine is made of high-temperature alloy, the machining efficiency is very low during turning, and for the consideration of production cycle and machining cost, a process chuck is removed by adopting a linear cutting mode, and only 1mm of allowance is reserved for finish turning.
S6, finely turning the welding end of the turbine blank to obtain a finished turbine.
Specifically, a main shaft and a welding end of a finished turbine are welded, dynamic balance processing is carried out, the main shaft is placed on a supporting position, dynamic balance is carried out on TT and V planes, a weight removing position is a position indicated by x, a mechanical processing process card is seen in a weight removing range, the main shaft which is subjected to dynamic balance is marked by a color pen, an excircle of a ground non-welding end is clamped by soft three claws during processing, an excircle, an end face and an inner hole of a welding face are finely turned by flattening the end face of the ground non-welding end, meanwhile, a step plane for positioning subsequent turbine and optical axis friction welding is finely turned, the ground excircle of a blade is repeatedly corrected during processing, the center during turbine processing is ensured to be consistent with the center during subsequent friction welding, and the unbalance of a turbine shaft caused by the fact that the turbine and the optical axis are not concentric during friction welding is reduced.
The specific mode is as follows:
s61 clamping the outer circle of the welding end of the turbine blank by the soft three-jaw clamp;
s62, aligning the excircle and the end face of the non-welding end, and finish turning.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The machining method for the casting turbine of the supercharger is characterized by comprising the following steps of:
roughly turning the outer circle and the end face of the welding end of the turbine blank;
clamping the outer circle of the welding end of the turbine blank by using a soft three-jaw clamp;
ejecting a central hole on the end surface after rough turning;
grinding the turbine blank by taking the central hole as a reference;
cutting the length of the outer circle of the welding end of the rough turning turbine blank;
and finely turning the welding end of the turbine blank to obtain a finished turbine.
2. The method of claim 1, wherein the machining process comprises the steps of,
after the step of finish turning the turbine blank welded end to obtain a finished turbine, the method further comprises:
and welding the main shaft and the welding end of the finished turbine, and performing dynamic balance treatment.
3. The method of machining a cast turbocharger turbine according to claim 1,
the specific mode of roughly turning the outer circle and the end face of the welding end of the turbine blank is as follows:
clamping the outer circle of the welding end of the turbine blank by three claws, and aligning the outer circle and the end face;
and (4) punching a central hole on the light-emitting end surface, and roughly turning the turbine blank.
4. The method of claim 1, wherein the machining process comprises the steps of,
the specific mode of ejecting the center hole on the end surface after rough turning is as follows:
ejecting out a center hole, and emitting a high point of the end surface;
and (5) emitting light out of the outer circle and the end face.
5. The method of machining a cast turbocharger turbine according to claim 1,
finish turning turbine blank welded end obtains the concrete mode of finished product turbine:
clamping the outer circle of the welding end of the turbine blank by a soft three-jaw clamp;
and (5) aligning the excircle and the end face of the non-welding end and finish turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910185.4A CN115091145A (en) | 2022-07-29 | 2022-07-29 | Machining method for casting turbine of supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910185.4A CN115091145A (en) | 2022-07-29 | 2022-07-29 | Machining method for casting turbine of supercharger |
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| CN115091145A true CN115091145A (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210910185.4A Pending CN115091145A (en) | 2022-07-29 | 2022-07-29 | Machining method for casting turbine of supercharger |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134358A2 (en) * | 2000-03-13 | 2001-09-19 | Ishikawajima Mass-Produced Machinery Co., Ltd. | Method of machining the turbine rotor shaft of a supercharger |
| JP2004052616A (en) * | 2002-07-18 | 2004-02-19 | Ndk Kako Center Kk | Method of machining turbine blade of supercharger |
| CN1693675A (en) * | 2005-05-17 | 2005-11-09 | 江津增压器厂 | Manufacturing method of small sized turbine shaft |
| CN1693677A (en) * | 2005-05-17 | 2005-11-09 | 江津增压器厂 | Manufacturing method of small sized turbine |
| KR20110017667A (en) * | 2009-08-14 | 2011-02-22 | 두산중공업 주식회사 | Grinding method for bucket tip of the turbine-rotor |
| WO2015087907A1 (en) * | 2013-12-13 | 2015-06-18 | 昭和電工株式会社 | Formed material for turbo-compressor wheel made of aluminum alloy, and method of manufacturing turbo-compressor wheel |
| CN113020899A (en) * | 2020-12-28 | 2021-06-25 | 重庆江增船舶重工有限公司 | Method for processing compressed air impeller of ZR series supercharger |
| KR20220099232A (en) * | 2021-01-06 | 2022-07-13 | 주식회사 삼정터빈 | A vacuum investment casting system and method of turbine wheel for a turbocharger |
-
2022
- 2022-07-29 CN CN202210910185.4A patent/CN115091145A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134358A2 (en) * | 2000-03-13 | 2001-09-19 | Ishikawajima Mass-Produced Machinery Co., Ltd. | Method of machining the turbine rotor shaft of a supercharger |
| JP2004052616A (en) * | 2002-07-18 | 2004-02-19 | Ndk Kako Center Kk | Method of machining turbine blade of supercharger |
| CN1693675A (en) * | 2005-05-17 | 2005-11-09 | 江津增压器厂 | Manufacturing method of small sized turbine shaft |
| CN1693677A (en) * | 2005-05-17 | 2005-11-09 | 江津增压器厂 | Manufacturing method of small sized turbine |
| KR20110017667A (en) * | 2009-08-14 | 2011-02-22 | 두산중공업 주식회사 | Grinding method for bucket tip of the turbine-rotor |
| WO2015087907A1 (en) * | 2013-12-13 | 2015-06-18 | 昭和電工株式会社 | Formed material for turbo-compressor wheel made of aluminum alloy, and method of manufacturing turbo-compressor wheel |
| CN113020899A (en) * | 2020-12-28 | 2021-06-25 | 重庆江增船舶重工有限公司 | Method for processing compressed air impeller of ZR series supercharger |
| KR20220099232A (en) * | 2021-01-06 | 2022-07-13 | 주식회사 삼정터빈 | A vacuum investment casting system and method of turbine wheel for a turbocharger |
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