CN112338642A - Polishing method of multi-dimensional flow blade profile - Google Patents
Polishing method of multi-dimensional flow blade profile Download PDFInfo
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- CN112338642A CN112338642A CN202011145124.0A CN202011145124A CN112338642A CN 112338642 A CN112338642 A CN 112338642A CN 202011145124 A CN202011145124 A CN 202011145124A CN 112338642 A CN112338642 A CN 112338642A
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- wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
Abstract
The invention belongs to the technical field of precision machining, and discloses a polishing method of a multi-element flow blade profile, which comprises the following steps: 1) grinding and polishing the transfer R of the blade and the redundant quantity of the front edge and the rear edge by adopting a wood wheel, and polishing the milling residual grains on the leaf basin and the leaf back of the blade by adopting a louver wheel grinding head with a handle; 2) polishing the switching R, the front edge, the rear edge and the blade back of the blade by using a fiber wheel; then polishing the leaf basin of the blade by using a medium-hard nylon fiber wheel, and then polishing the leaf basin of the blade by using a soft nylon fiber wheel; 3) and after finishing fine polishing, cutting off the process boss in a linear manner to obtain the multi-element flow blade. Through using different polishing tools to carry out special treatment at different required stages of blade polishing, the damage to the surface of the blade and the air inlet and exhaust edges can be reduced while the polishing requirement is met.
Description
Technical Field
The invention belongs to the technical field of precision machining, and relates to a polishing method of a multi-flow blade profile.
Background
Blades are a very important class of parts in industrial manufacturing, playing a critical role in the performance of the product. The indexes of efficiency, service life and the like of the product are directly influenced by the design and manufacturing quality of the blade and are mainly influenced. Especially, the blade in the precision machining field is very important to influence the performance of the product, because most of the blades in the field are irregular in shape, complex in size calculation and greatly different from common parts.
The polishing of the profile of the multi-flow blade and the air inlet edge and the air outlet edge of the multi-flow blade is the key for ensuring the processing quality of the blade, the torsion resistance of a blade basin is very large due to small size and complex shape of the blade, and the conventional polishing process is complex in operation procedure and easy to polish the surface of a part and the air inlet edge and the air outlet edge.
Disclosure of Invention
The invention provides a polishing method of a multi-flow blade profile, which is used for solving the problems that the conventional polishing process is complex in operation procedure and is easy to polish the surfaces of parts and air inlet and exhaust edges.
The invention is realized by the following technical scheme:
a method of polishing a multi-dimensional flow blade profile, comprising the steps of:
1) primary casting: grinding the switching R, the front edge and the rear edge of the blade with the process boss by using a wood wheel to remove the surplus quantity remained during processing; then, polishing residual grains milled on the leaf basin and the leaf back of the blade by using a louver wheel polishing head with a handle;
2) fine polishing: polishing the switching R, the front edge, the rear edge and the blade back of the blade by using a fiber wheel; then polishing the leaf basin of the blade by adopting a medium-hard nylon fiber wheel, and polishing the leaf basin of the blade by adopting a soft nylon fiber wheel;
the specification of the wood wheel is an EXL wheel, 6 '. times.1/4 '. times.3/4 ', and a poplar material; the specification of the grinding head with the handle for the impeller is 30 multiplied by 25 multiplied by 6mm and 80 meshes; the specification of the fiber wheel is EXL wheel and 6 '. times.1/4 '. times.3/4 '; the medium-hard nylon fiber wheel comprises a nylon fiber wheel with the specification of 20 multiplied by 20mm and 10 multiplied by 10mm and the hardness of 6-7; the soft nylon fiber wheel comprises a nylon fiber wheel with the specification of 20 multiplied by 10mm and 10 multiplied by 10mm and the hardness of 2-3;
3) and after finishing fine polishing, cutting off the process boss in a linear manner to obtain the multi-element flow blade.
Before the fine polishing treatment in the step 2), uniformly coating small white wax polishing paste on the fiber wheel, the medium-hard nylon fiber wheel and the soft nylon fiber wheel.
The fine polishing in the step 2) is to perform polishing treatment for multiple times in a reciprocating manner along the length direction of the blade.
Compared with the prior art, the invention has the beneficial effects that:
the polishing method provided by the invention comprises a primary polishing part and a fine polishing part, wherein the primary polishing part comprises the following steps: polishing the switching R and the redundant quantity of the front edge and the rear edge of the blade by using a tough and wear-resistant wood wheel, and polishing residual grains on a blade basin and a blade back of the blade by using a grinding head with a handle, which is suitable for pre-processing and polishing the residual grains in the processing process, wherein the grinding head is generally knife grains. And the fine polishing comprises: the method comprises the steps of polishing the switching R, the front edge, the rear edge and the blade back of the blade by using a fiber wheel which is not easy to cause overheating of the blade, and polishing the blade basin of the blade by using nylon fiber wheels with different soft and hard specifications. Through using different polishing tools to carry out special treatment at different required stages of blade polishing, the damage to the surface of the blade and the air inlet and exhaust edges can be reduced while the polishing requirement is met. The polishing method greatly shortens the polishing period of the blade and saves the cost; and, still promoted polishing quality effectively, reduced the defective rate.
Drawings
FIG. 1 is a front view of a blade according to the present invention;
FIG. 2 is a side view of a blade of the present invention;
fig. 3 is a rear view of a blade according to the invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a polishing method of a multi-flow blade profile, which comprises the following steps with reference to fig. 1, 2 and 3: 1) primary casting: grinding the switching R, the front edge and the rear edge of the blade with the process boss by using a wood wheel to remove the surplus quantity remained during processing; then, polishing residual grains milled on the leaf basin and the leaf back of the blade by using a louver wheel polishing head with a handle; 2) fine polishing: polishing the switching R, the front edge, the rear edge and the blade back of the blade by using a fiber wheel; then polishing the leaf basin of the blade by adopting a medium-hard nylon fiber wheel, and polishing the leaf basin of the blade by adopting a soft nylon fiber wheel; 3) and after finishing fine polishing, cutting off the process boss in a linear manner to obtain the multi-element flow blade.
The specification of the wood wheel is an EXL wheel, the diameter, the thickness and the circle center are 6 '. times.1/4 '. times.3/4 ', the unit is an inch (namely the diameter is 15.2cm, the thickness is 0.6cm, and the circle center is 1.9cm), and the hardness can be medium-hard type and poplar material. The specification of the grinding head with the handle for the impeller is that the diameter multiplied by the height multiplied by the handle diameter is 30 multiplied by 25 multiplied by 6mm, and the mesh number is 80 meshes. The specification of the fiber wheel is an EXL wheel, the diameter, the thickness and the circle center are 6 '. times.1/4 '. times.3/4 ', the unit is an inch (namely the diameter is 15.2cm, the thickness is 0.6cm, and the circle center is 1.9cm), the hardness can be soft, and the hardness is consistent with that of a soft nylon fiber wheel; the medium-hard nylon fiber wheel comprises a nylon fiber wheel with the specification of 20 multiplied by 20mm and 10 multiplied by 10mm and the hardness of 6-7; the soft nylon fiber wheel comprises a nylon fiber wheel with the specification of 20 multiplied by 10mm and 10 multiplied by 10mm and the hardness of 2-3. The wood wheel and the fiber wheel can be 3M cards.
The polishing method provided by the invention comprises a primary polishing part and a fine polishing part, wherein the primary polishing part comprises the following steps: and polishing the switching R and the redundant quantity of the front edge and the rear edge of the blade by using a tough and wear-resistant wood wheel, and polishing the knife lines on the basin and the back of the blade by using a grinding head of the bladed wheel with the handle, which is suitable for performing pretreatment polishing on the knife lines generated in the machining process. The fine polishing comprises the following steps: the method comprises the steps of polishing the switching R, the front edge, the rear edge and the blade back of the blade by using a fiber wheel which is not easy to cause overheating of the blade, and polishing the blade basin of the blade by using nylon fiber wheels with different soft and hard specifications. Through using different burnishing tools to carry out special processing at the different demand stages of blade polishing, can guarantee to reduce the damage to the blade when reaching the polishing demand.
Preferably, before the finish polishing treatment in step 2), small white wax polishing paste is uniformly coated on the fiber wheel, the medium-hard nylon fiber wheel and the soft nylon fiber wheel. The polishing paste has fine and greasy particles and good polishing effect, and the smooth finish of the surface of the blade can be improved by coating the small white wax polishing paste on a polishing tool during fine polishing.
More preferably, the finish polishing in step 2) is performed by performing polishing repeatedly along the length direction of the blade. Generally, the reciprocating operation is performed for 3-5 times to meet the requirement.
After the polishing treatment is finished, the three-coordinate detection equipment is used for detecting the section of the blade processed by the polishing method and comparing the section with a theoretical model to obtain the qualified blade. It can be seen that the polishing method greatly shortens the polishing period of the blade and saves the cost; and, still promoted polishing quality effectively, reduced the defective rate. In addition, the process boss can be cut off in a linear mode after the polishing treatment is finished.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (3)
1. A method of polishing a multi-dimensional flow blade profile, comprising the steps of:
1) primary casting: grinding the switching R, the front edge and the rear edge of the blade with the process boss by using a wood wheel to remove the surplus quantity remained during processing; then, polishing residual grains milled on the leaf basin and the leaf back of the blade by using a louver wheel polishing head with a handle;
2) fine polishing: polishing the switching R, the front edge, the rear edge and the blade back of the blade by using a fiber wheel; then polishing the leaf basin of the blade by adopting a medium-hard nylon fiber wheel, and polishing the leaf basin of the blade by adopting a soft nylon fiber wheel;
the specification of the wood wheel is an EXL wheel, 6 '. times.1/4 '. times.3/4 ', and a poplar material; the specification of the grinding head with the handle for the impeller is 30 multiplied by 25 multiplied by 6mm and 80 meshes; the specification of the fiber wheel is EXL wheel and 6 '. times.1/4 '. times.3/4 '; the medium-hard nylon fiber wheel comprises a nylon fiber wheel with the specification of 20 multiplied by 20mm and 10 multiplied by 10mm and the hardness of 6-7; the soft nylon fiber wheel comprises a nylon fiber wheel with the specification of 20 multiplied by 10mm and 10 multiplied by 10mm and the hardness of 2-3;
3) and after finishing fine polishing, cutting off the process boss in a linear manner to obtain the multi-element flow blade.
2. The method for polishing a multi-flow blade profile according to claim 1, wherein a small white wax polishing paste is uniformly applied on the fiber wheel, the medium-hard nylon fiber wheel and the soft nylon fiber wheel before the finish polishing treatment in step 2).
3. The method for polishing the profiles of the multi-element flow blades as claimed in claim 1 or 2, wherein the finish polishing in the step 2) is a plurality of times of polishing treatments which are performed repeatedly along the length direction of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011145124.0A CN112338642A (en) | 2020-10-23 | 2020-10-23 | Polishing method of multi-dimensional flow blade profile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011145124.0A CN112338642A (en) | 2020-10-23 | 2020-10-23 | Polishing method of multi-dimensional flow blade profile |
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| CN112338642A true CN112338642A (en) | 2021-02-09 |
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| CN202011145124.0A Pending CN112338642A (en) | 2020-10-23 | 2020-10-23 | Polishing method of multi-dimensional flow blade profile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789392A (en) * | 2022-05-05 | 2022-07-26 | 中国航发航空科技股份有限公司 | Polishing wheel and polishing method for blade damping platform of aircraft engine |
Citations (8)
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|---|---|---|---|---|
| JP2003275947A (en) * | 2002-03-25 | 2003-09-30 | Sanyo Special Steel Co Ltd | Method of automatically grinding blade for cold shear cutting machine |
| US20080305719A1 (en) * | 2007-06-05 | 2008-12-11 | Tcg International, Inc., | Scratch removal device and method |
| CN102476344A (en) * | 2010-11-22 | 2012-05-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Polishing and grinding method of titanium alloy blades |
| CN103056626A (en) * | 2012-12-19 | 2013-04-24 | 中国南方航空工业(集团)有限公司 | Machining technology of cobalt beryllium copper blade |
| CN104985507A (en) * | 2015-07-22 | 2015-10-21 | 太原理工大学 | Blade surface roll-polishing finishing method adopting distributed protection measure |
| CN109551307A (en) * | 2018-11-22 | 2019-04-02 | 太原理工大学 | A kind of method that online replacement polishing and grinding head realizes robot subregion rubbing down blade |
| CN109623591A (en) * | 2018-11-27 | 2019-04-16 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of compressor blade holotype face numerical control grinding and polishing method |
| CN111189684A (en) * | 2020-01-14 | 2020-05-22 | 中国能源建设集团北京电力建设有限公司 | On-site metallographic examination method |
-
2020
- 2020-10-23 CN CN202011145124.0A patent/CN112338642A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003275947A (en) * | 2002-03-25 | 2003-09-30 | Sanyo Special Steel Co Ltd | Method of automatically grinding blade for cold shear cutting machine |
| US20080305719A1 (en) * | 2007-06-05 | 2008-12-11 | Tcg International, Inc., | Scratch removal device and method |
| CN102476344A (en) * | 2010-11-22 | 2012-05-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Polishing and grinding method of titanium alloy blades |
| CN103056626A (en) * | 2012-12-19 | 2013-04-24 | 中国南方航空工业(集团)有限公司 | Machining technology of cobalt beryllium copper blade |
| CN104985507A (en) * | 2015-07-22 | 2015-10-21 | 太原理工大学 | Blade surface roll-polishing finishing method adopting distributed protection measure |
| CN109551307A (en) * | 2018-11-22 | 2019-04-02 | 太原理工大学 | A kind of method that online replacement polishing and grinding head realizes robot subregion rubbing down blade |
| CN109623591A (en) * | 2018-11-27 | 2019-04-16 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of compressor blade holotype face numerical control grinding and polishing method |
| CN111189684A (en) * | 2020-01-14 | 2020-05-22 | 中国能源建设集团北京电力建设有限公司 | On-site metallographic examination method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789392A (en) * | 2022-05-05 | 2022-07-26 | 中国航发航空科技股份有限公司 | Polishing wheel and polishing method for blade damping platform of aircraft engine |
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Application publication date: 20210209 |
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