CN109894827A - A kind of four-axle linked milling machine processing method of turbine blade - Google Patents
A kind of four-axle linked milling machine processing method of turbine blade Download PDFInfo
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- CN109894827A CN109894827A CN201910293646.6A CN201910293646A CN109894827A CN 109894827 A CN109894827 A CN 109894827A CN 201910293646 A CN201910293646 A CN 201910293646A CN 109894827 A CN109894827 A CN 109894827A
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Abstract
The present invention relates to a kind of four-axle linked milling machine processing methods of turbine blade, the turbine blade structure includes inner arc, back four arc, lagging edge and leading edge parts, procedure of processing is as follows: blank material being clamped to the flat-nose pliers of general milling machine, the slotting cutter clamped using general milling machine port processes blade root end face and integral shroud end face with finish-milling two-step by rough milling；Blank material after processing is clamped on the three top fixtures to four-axis milling machine, and using ball head knife segmental machining blade root end face, intermediate lands and the integral shroud end face of the installation of four-axis milling machine port, by cushion block pad to blade root end bottom, it is measured simultaneously using radial, steam admission side template in molded line template, back radial position template, interior radial position template, integral shroud, semi-finished product blade is clamped to polishing on polishing machine, on the total lazy-tongs of the milling that semi-finished product clamper after polishing is filled to general milling machine, and is carried on the back in integral shroud and radially carry out scribing line cutting.Processing cost is reduced, shortens the process-cycle, improves the quality of product.
Description
Technical field
The present invention relates to turbine blade, especially a kind of four-axle linked milling machine processing method of turbine blade.
Background technique
With the rapid growth of China's economic development, the competition of generating equipment manufacturing market is also growing more intense, and produces to improve
Quality, constituent parts have all poured into a large amount of wealth, object, manpower in technological transformation.Since modern turbine is to high load capacity, high frequency
Rate powerful design direction development, and using twisted blade be reduce heat consumption improve unit efficiency most effective measure it
One.
Turbine blade is the heart of steam turbine, and the manufacturing technology and manufacturing quality of blade directly affect unit maneuverability
It can be with the reliability of unit.Blade is more complex curved body part, the systems such as the electrolysis used for a long time, profiling, three linkages
Technique is made, under production efficiency is very low, blade profile precision is difficult to ensure, and complex process, large labor intensity, environment are disliked
Of inferior quality feature is not able to satisfy the requirement of technological progress, can not effectively guarantee blade profile accuracy and manufacturing quality, less
It is able to satisfy the requirement of current steam turbine market competition.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of precision height, high production efficiency and it can realize mass production
A kind of four-axle linked milling machine processing method of turbine blade.
In order to solve the above technical problems, the present invention provides a kind of four-axle linked milling machine processing method of turbine blade,
The turbine blade structure includes inner arc, back four arc, lagging edge and leading edge parts, the turbine Blade Machining technique
It processes according to the following steps:
Step (1): blank material is clamped to the flat-nose pliers of general milling machine, and the slotting cutter clamped using general milling machine port is by rough milling
Blade root end face and integral shroud end face are processed with finish-milling two-step；
Step (2): the blank material after processing is clamped on the three top fixtures to four-axis milling machine, and uses four-axis milling machine port
Ball head knife segmental machining blade root end face, intermediate lands and the integral shroud end face of installation, it is desirable that blade root and integral shroud switching high-volume be 3mm,
Interior, back arc single side is high-volume 2.55mm, and lacing wire boss is high-volume 3mm；
Step (3): by 64mm cushion block pad to blade root end bottom, while molded line template, back radial position template, interior radial direction being used
Radial in position template, integral shroud, steam admission side template measurement, it is desirable that template light leakage index to be respectively as follows: molded line maximum light leakage little
In 0.5, carrying on the back radial light leakage value interval is 0-0.1, interior radial direction light leakage value interval is 0-0.1, interior radial direction, steam admission side light leakage
Value interval is 0-0.1；
Step (4): semi-finished product blade is clamped to polishing on polishing machine, the processes such as timeliness, school type polish in rear blade
Arc does not seal light rain 0.76mm into vapour, and middle section is less than 0.5mm, and vapour part is less than 0.38mm out, carries on the back arc, does not seal light rain into vapour
0.76mm, middle section be less than 0.7mm, out vapour part be less than 0.2mm, blade profile relative to blade root position deviation be ±
1.27mm, intermediate thanks to access ramp allows the error amount of height to be 0-0.1 compared with compared with template；
Step (5): on the total lazy-tongs of the milling that the semi-finished product clamper after polishing is filled to general milling machine, and back is radial enterprising in integral shroud
Row scribing line cutting, while integral shroud end face and blade root faces parallel are not more than 0.2；
Step (6): detecting the turbine blade completed the process in step (5) according to drawing requirement, under entering after qualified
One process.
Further, the steam admission side axis of small circle deviation+0.89mm--0.38mm, steam output side axis of small circle deviation+
0.89mm—-0.25mm。
Further, the steam admission side axis of small circle deviation+0.89mm--0.38mm, steam output side axis of small circle deviation+
0.89mm—-0.25mm。
Further, the Line contour degree of the back arc lines: into vapour part < 0.76mm, middle section < 0.7mm, vapour out
Part < 0.2mm.
After adopting the above structure: according to the technical solution of the present invention, processing cost can not only be reduced, shorten the process-cycle,
And the quality of product can be improved, guarantee the precision of product size, reduce rejection rate, improves productivity effect, improve product
The safety and reliability of service life and equipment is subtracted by above-mentioned processing technology, and reasonably using cutter and lathe
Lack the abrasion of cutter and the excessive use of lathe, increased cutting-tool's used life, reduce costs, improves the work of worker
Make efficiency.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of turbine blade.
Specific embodiment
As shown in Figure 1, a kind of four-axle linked milling machine processing method of turbine blade, the turbine blade structure includes interior
Arc, back four arc, lagging edge and leading edge parts, the turbine Blade Machining technique are processed according to the following steps:
Step (1): blank material is clamped to the flat-nose pliers of general milling machine, and the slotting cutter clamped using general milling machine port is by rough milling
Blade root end face and integral shroud end face are processed with finish-milling two-step；
Step (2): the blank material after processing is clamped on the three top fixtures to four-axis milling machine, and uses four-axis milling machine port
Ball head knife segmental machining blade root end face, intermediate lands and the integral shroud end face of installation, it is desirable that blade root and integral shroud switching high-volume be 3mm,
Interior, back arc single side is high-volume 2.55mm, and lacing wire boss is high-volume 3mm；
Step (3): by 64mm cushion block pad to blade root end bottom, while molded line template, back radial position template, interior radial direction being used
Radial in position template, integral shroud, steam admission side template measurement, it is desirable that template light leakage index to be respectively as follows: molded line maximum light leakage little
In 0.5, carrying on the back radial light leakage value interval is 0-0.1, interior radial direction light leakage value interval is 0-0.1, interior radial direction, steam admission side light leakage
Value interval is 0-0.1；
Step (4): semi-finished product blade is clamped to polishing on polishing machine, the processes such as timeliness, school type polish in rear blade
Arc does not seal light rain 0.76mm into vapour, and middle section is less than 0.5mm, and vapour part is less than 0.38mm out, carries on the back arc, does not seal light rain into vapour
0.76mm, middle section be less than 0.7mm, out vapour part be less than 0.2mm, blade profile relative to blade root position deviation be ±
1.27mm, intermediate thanks to access ramp allows the error amount of height to be 0-0.1 compared with compared with template；
Step (5): on the total lazy-tongs of the milling that the semi-finished product clamper after polishing is filled to general milling machine, and back is radial enterprising in integral shroud
Row scribing line cutting, while integral shroud end face and blade root faces parallel are not more than 0.2；
Step (6): detecting the turbine blade completed the process in step (5) according to drawing requirement, under entering after qualified
One process.
As shown in Figure 1, the steam admission side axis of small circle deviation+0.89mm--0.38mm, steam output side axis of small circle deviation+
0.89mm—-0.25mm。
As shown in Figure 1, the Line contour degree of the inner arc molded line: into vapour part < 0.76mm, middle section < 0.5mm, out
Vapour part < 0.38mm.
As shown in Figure 1, the Line contour degree of the back arc lines: into vapour part < 0.76mm, middle section < 0.7mm, out
Vapour part < 0.2mm.
Although specific embodiments of the present invention have been described above, those skilled in the art should be appreciated that this
It is merely illustrative of, various changes or modifications can be made to present embodiment, without departing from the principle and substance of the present invention,
Protection scope of the present invention is only limited by the claims that follow.
Claims (4)
1. a kind of four-axle linked milling machine processing method of turbine blade, the turbine blade structure includes inner arc, back arc, goes out vapour
Four parts in side and leading edge, it is characterized in that: the turbine Blade Machining technique is processed according to the following steps:
Step (1): blank material is clamped to the flat-nose pliers of general milling machine, and the slotting cutter clamped using general milling machine port is by rough milling
Blade root end face and integral shroud end face are processed with finish-milling two-step；
Step (2): the blank material after processing is clamped on the three top fixtures to four-axis milling machine, and uses four-axis milling machine port
Ball head knife segmental machining blade root end face, intermediate lands and the integral shroud end face of installation, it is desirable that blade root and integral shroud switching high-volume be 3mm,
Interior, back arc single side is high-volume 2.55mm, and lacing wire boss is high-volume 3mm；
Step (3): by 64mm cushion block pad to blade root end bottom, while molded line template, back radial position template, interior radial direction being used
Radial in position template, integral shroud, steam admission side template measurement, it is desirable that template light leakage index to be respectively as follows: molded line maximum light leakage little
In 0.5, carrying on the back radial light leakage value interval is 0-0.1, interior radial direction light leakage value interval is 0-0.1, interior radial direction, steam admission side light leakage
Value interval is 0-0.1；
Step (4): semi-finished product blade is clamped to polishing on polishing machine, the processes such as timeliness, school type polish in rear blade
Arc does not seal light rain 0.76mm into vapour, and middle section is less than 0.5mm, and vapour part is less than 0.38mm out, carries on the back arc, does not seal light rain into vapour
0.76mm, middle section be less than 0.7mm, out vapour part be less than 0.2mm, blade profile relative to blade root position deviation be ±
1.27mm, intermediate thanks to access ramp allows the error amount of height to be 0-0.1 compared with compared with template；
Step (5): on the total lazy-tongs of the milling that the semi-finished product clamper after polishing is filled to general milling machine, and back is radial enterprising in integral shroud
Row scribing line cutting, while integral shroud end face and blade root faces parallel are not more than 0.2；
Step (6): detecting the turbine blade completed the process in step (5) according to drawing requirement, under entering after qualified
One process.
2. the four-axle linked milling machine processing method of a kind of turbine blade according to claim 1, it is characterized in that: described into vapour
Side axis of small circle deviation+0.89mm--0.38mm, steam output side axis of small circle deviation+0.89mm--0.25mm.
3. the four-axle linked milling machine processing method of a kind of turbine blade according to claim 1, it is characterized in that: the inner arc
The Line contour degree of molded line: into vapour part < 0.76mm, middle section < 0.5mm, vapour part < 0.38mm out.
4. the four-axle linked milling machine processing method of a kind of turbine blade according to claim 1, it is characterized in that: the back arc
The Line contour degree of molded line: into vapour part < 0.76mm, middle section < 0.7mm, vapour part < 0.2mm out.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025228A (en) * | 2020-08-18 | 2020-12-04 | 南通中能机械制造有限公司 | Machining process of seventh-stage moving blade |
| CN112207524A (en) * | 2020-08-26 | 2021-01-12 | 成都市新美加机械设备制造有限公司 | Small blade processing technology |
| CN113020677A (en) * | 2021-03-22 | 2021-06-25 | 哈尔滨汽轮机厂有限责任公司 | Method for processing longitudinal leaf root steam passage of steam turbine |
| CN114310203A (en) * | 2021-12-31 | 2022-04-12 | 无锡透平叶片有限公司 | Secondary processing method for assembling surfaces of blade shroud and boss of steam turbine blade |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025228A (en) * | 2020-08-18 | 2020-12-04 | 南通中能机械制造有限公司 | Machining process of seventh-stage moving blade |
| CN112207524A (en) * | 2020-08-26 | 2021-01-12 | 成都市新美加机械设备制造有限公司 | Small blade processing technology |
| CN112207524B (en) * | 2020-08-26 | 2022-07-19 | 成都市新美加机械设备制造有限公司 | Small blade processing technology |
| CN113020677A (en) * | 2021-03-22 | 2021-06-25 | 哈尔滨汽轮机厂有限责任公司 | Method for processing longitudinal leaf root steam passage of steam turbine |
| CN114310203A (en) * | 2021-12-31 | 2022-04-12 | 无锡透平叶片有限公司 | Secondary processing method for assembling surfaces of blade shroud and boss of steam turbine blade |
| CN114310203B (en) * | 2021-12-31 | 2024-05-24 | 无锡透平叶片有限公司 | Secondary processing method for assembling surface of blade shroud and boss of turbine blade |
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