CN111037242A - Finish machining method for ternary impeller - Google Patents
Finish machining method for ternary impeller Download PDFInfo
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- CN111037242A CN111037242A CN201911309133.6A CN201911309133A CN111037242A CN 111037242 A CN111037242 A CN 111037242A CN 201911309133 A CN201911309133 A CN 201911309133A CN 111037242 A CN111037242 A CN 111037242A
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- impeller
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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
- B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
Abstract
The invention discloses a finish machining method of a ternary impeller, which comprises the following steps: processing the blank into an impeller blank with the overall ternary impeller profile according to the dimensional requirement of the ternary impeller; the method comprises the following steps of (1) sequentially carrying out rough machining and finish machining on blades on an impeller blank to finish the machining of the blades on the impeller blank; clamping the impeller blank on a special machining tool to enable the back side of a shaft disc of the impeller blank to be close to a machining opening of the special tool; and (4) carrying out rough machining and finish machining on the shaft disc back of the impeller blank clamped on the special machining tool in sequence to finish machining on the ternary impeller. The invention solves the problem of integral processing of the ternary impeller and fills the gap of processing the ternary impeller in China.
Description
Technical Field
The invention belongs to the technical field of machining of ternary impellers of compressors, and particularly relates to a finish machining method of a ternary impeller.
Background
The impeller is also called a working wheel, and the only element which does work on airflow in the centrifugal compressor is the most main part on the rotor. Generally comprises parts such as a wheel disc, a wheel cover and a blade. The gas rotates at high speed with the blades under the action of the blades of the impeller, and the gas is acted by the rotating centrifugal force and flows in the impeller in a diffusion mode, so that the pressure of the gas passing through the impeller is improved. Because the machining precision of the ternary impeller has a vital influence on the whole centrifugal compressor, the improvement of the machining precision of the ternary impeller is an important means for improving the performance of a unit.
At present, the processing method of the integral impeller mainly comprises methods such as precision casting, numerical control cutting processing, electrolytic processing and the like, while the processing of the integral ternary impeller is researched for more than ten years in China, and although a certain processing experience is obtained, the processing difficulty of the ternary impeller with a complex structure is extremely high. The fine machining of the ternary impeller determines the machining precision of the impeller, and meanwhile, the fine machining of the ternary impeller has important influence on the efficiency and performance of the whole unit, so that the overall machining method of the ternary impeller needs to be researched urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a finish machining method of a ternary impeller.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of finishing a ternary impeller comprising:
processing the blank into an impeller blank with the overall ternary impeller profile according to the dimensional requirement of the ternary impeller;
the method comprises the following steps of (1) sequentially carrying out rough machining and finish machining on blades on an impeller blank to finish the machining of the blades on the impeller blank;
clamping the impeller blank on a special machining tool to enable the back side of a shaft disc of the impeller blank to be close to a machining opening of the special tool;
and (4) carrying out rough machining and finish machining on the shaft disc back of the impeller blank clamped on the special machining tool in sequence to finish machining on the ternary impeller.
Further, when the blank is subjected to outline processing to form an impeller blank with an integral ternary impeller outline, the method comprises the following steps:
according to the three-dimensional model of the ternary impeller, rough machining is carried out on the blank;
sequentially carrying out solid solution treatment and overaging treatment on the blank to enable the hardness of the blank to reach a preset hardness value;
and turning the blank to make the blank into an impeller blank with the overall shape of the integral ternary impeller.
Further, when the blank is sequentially subjected to solutionizing treatment and overaging treatment to enable the hardness of the blank to reach a preset hardness value, the method comprises the following steps:
solid solution treatment: heating the blank to a temperature in the range of 950-1100 ℃, then preserving heat for 2.0-3.0 hours, and then cooling the blank by setting the average cooling speed from the temperature to 750 ℃ to be 20-30 ℃/min;
and (3) overaging treatment: the blanks after the solid solution treatment are insulated for 4 to 5 hours at the temperature of 570-650 ℃, and then are cooled in air.
Further, carry out rough machining and finish machining in proper order to the blade on the impeller blank, accomplish blade processing man-hour on the impeller blank, include:
according to the size requirement of the ternary impeller, rough machining is carried out on blades on an impeller blank, and each blade and a flow channel of the ternary impeller are machined;
according to the three-dimensional model of the ternary impeller, performing finish machining on the impeller blank to machine blades and a hub which are consistent with the three-dimensional model;
and (4) grinding round corners and edges on the impeller blank, and deburring to finish the machining of the blades on the impeller blank.
Further, when the shaft disc back of the impeller blank mounted on the special processing tool is subjected to rough processing and finish processing in sequence, the special processing tool comprises a clamp main body used for placing the impeller blank and a pressing plate detachably connected with the upper edge of the clamp main body, and the pressing plate is used for placing the impeller blank behind the clamp main body and fixing the impeller blank in the clamp main body.
Furthermore, a plurality of fixing holes are distributed on the upper edge of the clamp main body, connecting holes are formed in the pressing plate, the pressing plate is connected with the fixing holes through bolts penetrating through the connecting holes, the pressing plate is fixed on the clamp main body, and the outer edge of the impeller blank is fixed in the clamp main body.
Furthermore, the fixing hole is a strip-shaped fixing hole, and one end of the strip-shaped fixing hole points to the outer edge of the clamp main body.
Further, clamping the impeller blank on the special tool for machining, and when the back side of the shaft disc of the impeller blank is close to the machining opening of the special tool, the method comprises the following steps:
placing the impeller blank in the fixture main body, and enabling the back side of a shaft disc of the impeller blank to be close to a processing opening of the fixture main body; and (3) performing surface making and alignment on the outer circle and the end face of the impeller blank, and fixing the impeller blank in the clamp main body through the pressing plate.
The invention provides a finish machining method of a ternary impeller, which is characterized in that a blank is machined into an impeller blank with the overall ternary impeller profile according to the size requirement of the ternary impeller; the method comprises the following steps of (1) sequentially carrying out rough machining and finish machining on blades on an impeller blank to finish the machining of the blades on the impeller blank; clamping the impeller blank on a special machining tool to enable the back side of a shaft disc of the impeller blank to be close to a machining opening of the special tool; and (4) carrying out rough machining and finish machining on the shaft disc back of the impeller blank clamped on the special machining tool in sequence to finish machining on the ternary impeller. The invention solves the problem of integral processing of the ternary impeller and fills the gap of processing the ternary impeller in China.
Drawings
FIG. 1 is a schematic flow diagram of a method of finishing a ternary impeller in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a schematic flow diagram of another method of finishing a ternary impeller in accordance with an exemplary embodiment of the present invention;
FIG. 3 is a schematic flow diagram of a method of finishing a ternary impeller in accordance with an exemplary embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a tooling dedicated for machining in accordance with an exemplary embodiment of the present invention;
fig. 5 is a schematic view of an impeller blank fixed on a tooling dedicated for machining according to an exemplary embodiment of the present invention.
Detailed Description
In order to overcome the defects in the prior art, the invention provides a finish machining method of a ternary impeller. In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the preferred embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below by reference are exemplary and are intended to be illustrative of the invention, but are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The following describes embodiments of the present invention in detail.
As shown in fig. 1, a finishing method of a ternary impeller comprises the following steps:
s100, machining the profile of the blank into an impeller blank with the overall profile of the ternary impeller according to the size requirement of the ternary impeller;
s200, sequentially carrying out rough machining and finish machining on the blades on the impeller blank to complete the machining of the blades on the impeller blank;
s300, clamping the impeller blank on a special machining tool to enable the back side of a shaft disc of the impeller blank to be close to a machining opening of the special machining tool;
s400, carrying out rough machining and finish machining on the shaft disc back of the impeller blank clamped on the special machining tool in sequence to finish machining on the ternary impeller.
As a preferred embodiment, as shown in fig. 2, when the blank is subjected to the profile machining to form the impeller blank with the integral ternary impeller profile, the method comprises the following steps:
s101, performing rough machining on a blank according to a three-dimensional model of the ternary impeller;
s102, sequentially carrying out solid solution treatment and overaging treatment on the blank to enable the hardness of the blank to reach a preset hardness value;
and S103, turning the blank to enable the blank to be processed into an impeller blank with the overall ternary impeller outline shape.
Further, when the blank is sequentially subjected to solutionizing treatment and overaging treatment to enable the hardness of the blank to reach a preset hardness value, the method comprises the following steps:
solid solution treatment: heating the blank to a temperature in the range of 950-1100 ℃, then preserving heat for 2.0-3.0 hours, and then cooling the blank by setting the average cooling speed from the temperature to 750 ℃ to be 20-30 ℃/min;
and (3) overaging treatment: the blanks after the solid solution treatment are insulated for 4 to 5 hours at the temperature of 570-650 ℃, and then are cooled in air.
As a preferred embodiment, as shown in fig. 3, the method for sequentially performing rough machining and finish machining on the blades on the impeller blank to complete the machining of the blades on the impeller blank includes:
s201, according to the size requirement of the ternary impeller, roughly machining blades on an impeller blank to machine each blade and a flow channel of the ternary impeller;
s202, performing finish machining on the impeller blank according to the three-dimensional model of the ternary impeller to machine blades and a hub which are consistent with the three-dimensional model;
and S203, grinding round corners and edges on the impeller blank, and deburring to finish machining of blades on the impeller blank.
As a preferred embodiment, as shown in fig. 4 to 5, the special processing tool comprises a clamp main body 1 for placing the impeller blank and a pressing plate 2 detachably connected with the upper edge of the clamp main body 1, wherein the pressing plate 2 is used for placing the impeller blank in the clamp main body 1 and then fixing the impeller blank in the clamp main body 1, and the pressing plate is a long hole and can be adjusted in length at will.
Furthermore, a plurality of fixing holes 3 are distributed on the upper edge of the clamp body 1, connecting holes are formed in the pressing plate 2, and the pressing plate 2 is connected with the fixing holes 3 through bolts penetrating through the connecting holes, so that the pressing plate 2 is fixed on the clamp body 1, and the outer edge of the impeller blank is fixed in the clamp body 1.
Further, the fixing hole 3 is a strip-shaped fixing hole, and one end of the strip-shaped fixing hole points to the outer edge of the clamp body 1.
As a preferred embodiment, when the impeller blank is clamped on a special tool for processing and the back side of the shaft disc of the impeller blank is close to a processing opening of the special tool, the method comprises the following steps:
placing an impeller blank in the fixture main body 1, and enabling the back side of a shaft disc of the impeller blank to be close to a processing opening of the fixture main body 1; and (3) performing surface making and alignment on the excircle and the end face of the impeller blank, and fixing the impeller blank in the clamp main body 1 through a pressing plate.
According to the method for finely machining the ternary impeller, provided by the invention, the blank is machined into an impeller blank with the overall ternary impeller profile according to the size requirement of the ternary impeller; the method comprises the following steps of (1) sequentially carrying out rough machining and finish machining on blades on an impeller blank to finish the machining of the blades on the impeller blank; clamping the impeller blank on a special machining tool to enable the back side of a shaft disc of the impeller blank to be close to a machining opening of the special tool; and (4) carrying out rough machining and finish machining on the shaft disc back of the impeller blank clamped on the special machining tool in sequence to finish machining on the ternary impeller. The invention solves the problem of integral processing of the ternary impeller and fills the gap of processing the ternary impeller in China.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (8)
1. A method of finishing a ternary impeller, comprising:
processing the blank into an impeller blank with the overall ternary impeller profile according to the dimensional requirement of the ternary impeller;
the method comprises the following steps of (1) sequentially carrying out rough machining and finish machining on blades on an impeller blank to finish the machining of the blades on the impeller blank;
clamping the impeller blank on a special machining tool to enable the back side of a shaft disc of the impeller blank to be close to a machining opening of the special tool;
and (4) carrying out rough machining and finish machining on the shaft disc back of the impeller blank clamped on the special machining tool in sequence to finish machining on the ternary impeller.
2. A method of finishing a ternary impeller as claimed in claim 1, wherein profiling the blank into an impeller blank with an integral ternary impeller profile comprises:
according to the three-dimensional model of the ternary impeller, rough machining is carried out on the blank;
sequentially carrying out solid solution treatment and overaging treatment on the blank to enable the hardness of the blank to reach a preset hardness value;
and turning the blank to make the blank into an impeller blank with the overall shape of the integral ternary impeller.
3. The method for finishing the ternary impeller according to claim 2, wherein when the blank is subjected to the solutionizing treatment and the overaging treatment in sequence to enable the hardness of the blank to reach a preset hardness value, the method comprises the following steps:
solid solution treatment: heating the blank to a temperature in the range of 950-1100 ℃, then preserving heat for 2.0-3.0 hours, and then cooling the blank by setting the average cooling speed from the temperature to 750 ℃ to be 20-30 ℃/min;
and (3) overaging treatment: the blanks after the solid solution treatment are insulated for 4 to 5 hours at the temperature of 570-650 ℃, and then are cooled in air.
4. The method for finishing the ternary impeller according to claim 1, wherein when the blades on the impeller blank are subjected to rough machining and finish machining in sequence to finish machining the blades on the impeller blank, the method comprises the following steps:
according to the size requirement of the ternary impeller, rough machining is carried out on blades on an impeller blank, and each blade and a flow channel of the ternary impeller are machined;
according to the three-dimensional model of the ternary impeller, performing finish machining on the impeller blank to machine blades and a hub which are consistent with the three-dimensional model;
and (4) grinding round corners and edges on the impeller blank, and deburring to finish the machining of the blades on the impeller blank.
5. The method for finely machining the ternary impeller according to claim 1, wherein when the shaft disc back of the impeller blank mounted and clamped on the special machining tool is subjected to rough machining and fine machining in sequence, the special machining tool comprises a clamp main body for placing the impeller blank and a pressing plate detachably connected with the upper edge of the clamp main body, and the pressing plate is used for fixing the impeller blank in the clamp main body after the impeller blank is placed in the clamp main body.
6. The method for finishing the ternary impeller as claimed in claim 5, wherein a plurality of fixing holes are formed in the upper edge of the clamp body, a connecting hole is formed in the pressing plate, the pressing plate is connected with the fixing holes through bolts penetrating through the connecting holes, so that the pressing plate is fixed on the clamp body, and the outer edge of the impeller blank is fixed in the clamp body.
7. The method for finishing the ternary impeller according to claim 6, wherein the fixing hole is an elongated fixing hole, and one end of the elongated fixing hole points to the outer edge of the clamp body.
8. The method for finely machining the ternary impeller according to any one of claims 5 to 7, wherein when the impeller blank is clamped on a special machining tool, and the back side of the shaft disc of the impeller blank is close to a machining opening of the special machining tool, the method comprises the following steps:
placing the impeller blank in the fixture main body, and enabling the back side of a shaft disc of the impeller blank to be close to a processing opening of the fixture main body; and (3) performing surface making and alignment on the outer circle and the end face of the impeller blank, and fixing the impeller blank in the clamp main body through the pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309133.6A CN111037242A (en) | 2019-12-18 | 2019-12-18 | Finish machining method for ternary impeller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911309133.6A CN111037242A (en) | 2019-12-18 | 2019-12-18 | Finish machining method for ternary impeller |
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| CN111037242A true CN111037242A (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131430A (en) * | 2021-11-10 | 2022-03-04 | 沈阳工程学院 | Ternary impeller grinding tool and technological method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100026828A (en) * | 2008-09-01 | 2010-03-10 | (주)지아이엠산업 | Manufacture method of impeller |
| US7707720B2 (en) * | 2002-07-19 | 2010-05-04 | Innovative Mag-Drive, Llc | Method for forming a corrosion-resistant impeller for a magnetic-drive centrifugal pump |
| CN102107295A (en) * | 2009-12-23 | 2011-06-29 | 沈阳鼓风机集团有限公司 | Milling method for ternary impeller with large diameter |
| CN102990302A (en) * | 2012-11-30 | 2013-03-27 | 杭州杭氧透平机械有限公司 | Machining method of closed three-elemental impeller with small flow |
| CN103419000A (en) * | 2013-07-16 | 2013-12-04 | 江苏亚梅泵业集团有限公司 | Machining method of main impeller of self-sucking pump |
| CN203875655U (en) * | 2014-06-12 | 2014-10-15 | 哈尔滨汽轮机厂有限责任公司 | Inclined face milling fixture for arc-shaped measuring tool |
| CN105563053A (en) * | 2014-11-05 | 2016-05-11 | 沈阳鼓风机集团齿轮压缩机有限公司 | Machining process for ultra-thin 3D integral impeller |
| CN205651103U (en) * | 2016-04-30 | 2016-10-19 | 北京仁通永盛机械设备有限公司 | Elastic fixture |
| CN106271459A (en) * | 2016-09-20 | 2017-01-04 | 哈尔滨东安发动机（集团）有限公司 | The processing method of complex-curved integral wheel |
| CN109759791A (en) * | 2019-02-01 | 2019-05-17 | 黑龙江省机械科学研究院 | Cavity thin-wall Centrifugal Impeller processing method in a kind of aerospace engine is accurate |
-
2019
- 2019-12-18 CN CN201911309133.6A patent/CN111037242A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7707720B2 (en) * | 2002-07-19 | 2010-05-04 | Innovative Mag-Drive, Llc | Method for forming a corrosion-resistant impeller for a magnetic-drive centrifugal pump |
| KR20100026828A (en) * | 2008-09-01 | 2010-03-10 | (주)지아이엠산업 | Manufacture method of impeller |
| CN102107295A (en) * | 2009-12-23 | 2011-06-29 | 沈阳鼓风机集团有限公司 | Milling method for ternary impeller with large diameter |
| CN102990302A (en) * | 2012-11-30 | 2013-03-27 | 杭州杭氧透平机械有限公司 | Machining method of closed three-elemental impeller with small flow |
| CN103419000A (en) * | 2013-07-16 | 2013-12-04 | 江苏亚梅泵业集团有限公司 | Machining method of main impeller of self-sucking pump |
| CN203875655U (en) * | 2014-06-12 | 2014-10-15 | 哈尔滨汽轮机厂有限责任公司 | Inclined face milling fixture for arc-shaped measuring tool |
| CN105563053A (en) * | 2014-11-05 | 2016-05-11 | 沈阳鼓风机集团齿轮压缩机有限公司 | Machining process for ultra-thin 3D integral impeller |
| CN205651103U (en) * | 2016-04-30 | 2016-10-19 | 北京仁通永盛机械设备有限公司 | Elastic fixture |
| CN106271459A (en) * | 2016-09-20 | 2017-01-04 | 哈尔滨东安发动机（集团）有限公司 | The processing method of complex-curved integral wheel |
| CN109759791A (en) * | 2019-02-01 | 2019-05-17 | 黑龙江省机械科学研究院 | Cavity thin-wall Centrifugal Impeller processing method in a kind of aerospace engine is accurate |
Non-Patent Citations (2)
| Title |
|---|
| 《航空制造工程手册》总编委会主编: "《航空制造工程手册 发动机机械加工》", 31 August 2016 * |
| 胡隆伟等: "《紧固件材料手册》", 31 December 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131430A (en) * | 2021-11-10 | 2022-03-04 | 沈阳工程学院 | Ternary impeller grinding tool and technological method |
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Application publication date: 20200421 |