CN101844241B - Machining device for counter bore side of connection hole of turbine rotor and method thereof - Google Patents
Machining device for counter bore side of connection hole of turbine rotor and method thereof Download PDFInfo
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- CN101844241B CN101844241B CN 201010186134 CN201010186134A CN101844241B CN 101844241 B CN101844241 B CN 101844241B CN 201010186134 CN201010186134 CN 201010186134 CN 201010186134 A CN201010186134 A CN 201010186134A CN 101844241 B CN101844241 B CN 101844241B
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Abstract
The invention discloses a machining device for the counter bore side of a connection hole of a turbine rotor and method thereof. The device comprises an ABS cutter bar, a copper bush, a scraper bar and a boring head, wherein, one end of the scraper bar is connected with the cutter bar, the other end thereof is provided with the boring head which is a fine-tuning invertible boring cutter bit; and the scraper bar is provided with the copper bush. The method comprises the following steps: (1) assembling the scraper bar and the ABS cutter bar which are connected into a whole on a cutter handle, and connecting to the end face of a main shaft of a numerical control machine; (2) arranging the copper bush on the scraper cutter; (3) starting a machine tool, penetrating the cutter bar into the through hole of a processed workpiece, and exposing the position for arranging the boring head on the scraper bar; (4) arranging the boring head, and adjusting the boring head according to the diameter of a counter bore; (5) trial-cutting the side of the counter bore, and exposing the position for measuring the diameter of the counter bore; (6) measuring the bore diameter, and adjusting the boring head again according to the machining requirement; (7) selecting cutting parameters according to the machining requirement, and then machining; and (8) measuring whether the bore diameter and the side and surface roughness reach the standard or not; if no, continuously machining; and if yes, finishing machining. The invention has high machining accuracy, low labor intensity, high efficiency and low cost.
Description
Technical field:
The invention belongs to workpiece counterbore processing technique field, be specifically related to a kind of machining device for counter bore side of connection hole of turbine rotor, and the method for carrying out counter bore side processing with this device.It is specially adapted to the counter bore side processing to the extra high gas turbine connection holes of counter bore side specification requirement, also processes applicable to the counter bore side of thermoelectricity, nuclear steam turbine connection holes.
Background technology:
The gas turbine turbo wheel is the part in the rotor, connection between the turbo wheel leans on more than 10 root pin bolt-connections tight, the pin bolt bears huge impulsive force, the pin bolt must with connection holes hole wall precision-fit, so the side (hole wall) to turbo wheel connection holes counterbore requires quite high, the counterbore aperture precision that requires this connection holes is Φ A+0.03mm, surface roughness is Ra1.6um, the gas turbine operating temperature reaches 1200 ℃, 3000 rev/mins of rotor speeds, and the gas turbine material is the high temperature stainless steel material, this material is difficult-to-machine material, its hardness is up to HB=350, and this hole is again deep hole, so difficulty of processing is very large.
For the roughing of counter bore side, common boring or milling tool and technique can realize, yet for the fine finishining of counter bore side, conventional machining technique and instrument can not meet the demands.
At present, the tool construction that the counter bore side processing of gas turbine connection holes is adopted is: scraping cutter bar head and copper sheathing are installed respectively on the scraping cutter bar, and wing is contained on the scraping cutter bar head, and wing is high-speed steel blade or carbide chip.Add man-hour: according to the counterbore processing request, adjust the processing diameter of wing, adjust cutting parameter, essence is scraped the side, each monolateral grind of staying.Counter bore side after essence is scraped is controlled milling tool by pincers worker is manual, grinds.This machining tool and mode need to rely on the handicraft of pincers worker exquisiteness could realize high-precision finishing requirements, and not only working (machining) efficiency is low for it, and waste time and energy, labour intensity is large.Moreover machining tool (especially cutter) is domestic preferably can't produce at present, needs to rely on import, and price is very expensive; Moreover the diameter of import cutter can't be adjusted, and processing remainingly after the main body also needs the pincers worker hand lapping, and versatility is poor.
Summary of the invention:
The objective of the invention is for above-mentioned the deficiencies in the prior art, provide a kind of and can satisfy counter bore side high accuracy finishing requirements equally, but can reduce labor intensity, improve the machining device for counter bore side of connection hole of turbine rotor of working (machining) efficiency, and the method for carrying out counter bore side processing with this device.
The objective of the invention is to adopt following technical proposals to realize:
A kind of machining device for counter bore side of connection hole of turbine rotor comprises ABS knife bar, copper sheathing, scraping cutter bar and boring head, and described scraping cutter bar one end is connected with the ABS knife bar, and the other end is provided with boring head, and this boring head is equipped with copper sheathing for the indexable cutter head of fine setting on the scraping cutter bar.
Described scraping cutter bar is band Morse taper shank scraping cutter bar, and the taper shank of scraping cutter bar is the outer cone standard Morse taper shank with tang.
One end of described ABS knife bar be provided with scraping cutter bar with the suitable tang mohs tapered bore of the outer cone standard Morse taper shank of tang, the outer cone standard Morse taper shank with tang of scraping cutter bar is packed in the tang mohs tapered bore of ABS knife bar.
Described ABS knife bar adopts the spot welding mode to fix with being connected of scraping cutter bar.
Described ABS knife bar is band tang Morse taper shank ABS module.
Described boring head is installed on the scraping cutter bar by the through hole that radially arranges on the scraping cutter bar.
The method that the above-mentioned machining device for counter bore side of connection hole of turbine rotor of a kind of usefulness is processed counter bore side comprises step:
1.. will connect into whole scraping cutter bar and ABS knife bar and be assemblied on the handle of a knife, and be connected to the main shaft end face of Digit Control Machine Tool;
2.. at scraping cutter bar copper sheathing is installed;
3.. start lathe, knife bar is penetrated in the through hole of workpiece to be machined, and expose the position that boring head is installed on the scraping cutter bar;
4.. boring head is installed, according to counter bore hole diameters, is adjusted the boring head position;
5.. the trial cut counter bore side, smooth to counter bore side, reserve the position of measuring counter bore hole diameters;
6.. measure the counterbore aperture, according to the counterbore processing request, again adjust boring head;
7.. according to the counterbore processing request, select cutting parameter, process;
8.. according to the counterbore processing request, whether diameter and the side surface roughness of measuring counterbore be up to standard, continuation processing not up to standard, end processing up to standard.
Step 6. described measurement is to measure with dial bore gage.
The invention has the beneficial effects as follows:
The present invention has satisfied the high accuracy process technology requirement of processed turbine rotor connection holes counterbore, the quite high connection holes counterbore of requirement on machining accuracy on the difficult processing works such as gas turbine of image height temperature stainless steel material particularly, it not only alleviated the workman labour intensity, improved working (machining) efficiency, and can adapt to the counter bore side high accuracy processing of any different size, versatility is good.It simple in structure selected domestic material, compares the import instrument, and cost has obtained significantly reducing, and has good application value.It can be applicable to the counter bore side processing to the extra high gas turbine connection holes of counter bore side specification requirement, can be applicable to again the connection holes high accuracy counter bore side processing of thermoelectricity, nuclear steam turbine.
Description of drawings:
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the parts of Fig. 1--band tang Morse taper shank ABS modular structure schematic diagram.
Fig. 3 is the parts of Fig. 1--band Morse taper shank scraping cutter bar structural representation.
Fig. 4 is the parts of Fig. 1--band Morse taper shank scraping cutter bar and copper sheathing assembly structure schematic diagram.
Fig. 5 is the parts of Fig. 1--the fine-adjustable boring head structural representation.
Code name implication among the figure: 1-ABS knife bar; Being welded and fixed a little of 2-ABS knife bar and scraping cutter bar; The 3-copper sheathing; The 4-scraping cutter bar; The 5-boring head; 6-is with the outer cone standard Morse taper shank of tang.
The specific embodiment:
Referring to Fig. 1 to Fig. 5: processing unit (plant) of the present invention comprises ABS knife bar 1, copper sheathing 3, scraping cutter bar 4 and boring head 5, and this boring head 5 is the indexable cutter head of fine setting.Scraping cutter bar 4 is band Morse taper shank scraping cutter bar, and band Morse taper shank scraping cutter bar according to the length of diameter, the degree of depth and the counterbore of gas turbine through hole, is considered simultaneously the diameter of boring head on the scraping cutter bar and designed.The taper shank of scraping cutter bar 4 is the outer cone standard Morse taper shanks 6 with tang.ABS knife bar 1 is band tang Morse taper shank ABS module, one end of ABS knife bar 1 is provided with the tang mohs tapered bore suitable with the outer cone standard Morse taper shank 6 with tang of scraping cutter bar 4, the outer cone standard Morse taper shank 6 with tang of scraping cutter bar 4 is packed in the tang mohs tapered bore of ABS knife bar 1, because the major diameter (degree of depth of through hole) of gas turbine through hole (being connection holes) is larger, add the vibrations in man-hour in order to alleviate knife bar, outside the band Morse taper shank scraping cutter bar that needs to pack into is tightened with band tang Morse taper shank ABS module, also need to fix in the mode of spot welding with on tang Morse taper shank ABS module and the inner face that is connected with the Morse taper shank scraping cutter bar, namely ABS knife bar and scraping cutter bar is welded and fixed a little 2.Decide with selecting according to the length of gas turbine through hole and with the specification of Morse taper shank scraping cutter bar of tang Morse taper shank ABS module, based on expensive (it is domestic several times with tang Morse taper shank ABS module price) of state tyre tang Morse taper shank ABS module, select home brands can satisfy processing request.The other end of scraping cutter bar 4 radially is provided with through hole, and boring head 5 is installed in the through hole on the scraping cutter bar 4, is fixed by screw.Copper sheathing 3 is installed on the scraping cutter bar 4, copper sheathing 3 penetrates in the gas turbine through hole, therefore, consider the gap between copper sheathing external diameter and the through hole internal diameter, need the big or small suitable of the size of copper sheathing external diameter and gas turbine through hole internal diameter, excesssive gap between them, can affect the machining accuracy of counter bore side, the gap is too small, then can affect the complete through hole precision of fine finishining, thereby need to be between them retention gap, but this gap is unsuitable excessive and too small.
With the method (take gas turbine as example) of said apparatus to the processing of turbine rotor connection holes counter bore side, comprise step: 1.. will connect into whole scraping cutter bar 4 and ABS knife bar 1 and be assemblied on the handle of a knife, and be connected to the main shaft end face of Digit Control Machine Tool; 2.. at scraping cutter bar 4 copper sheathing 3 is installed; 3.. start lathe, knife bar is penetrated in the through hole of processed gas turbine, and the position of exposing scraping cutter bar 4 installation boring heads 5 at the other end of through hole, the size specification of boring head selects according to the diameter of anti-bore hole, has very high versatility, and the boring head of 0.02mm gets final product on the trimming precision diameter, in order to reduce the cost of charp tool, can select home brands, sometimes because of the different blades that need to select suitable material of the cutting material of workpiece to be machined, such as high-speed steel blade or carbide chip etc.; 4.. according to the fine-adjustable boring head diameter of selecting, one of scraping cutter bar side boring the through hole of boring head 5 is installed, and according to fine-adjustable boring head scabble the handle position, bores a screw hole, by a tight screw being installed in boring head 5 on the scraping cutter bar 4 adjustment boring head 5 positions; 5.. the trial cut counter bore side, smooth to counter bore side, reserve the position of measuring counter bore hole diameters; 6.. measure the counterbore aperture with dial bore gage, according to the counterbore processing request, again adjust boring head; 7.. according to the counterbore processing request, select cutting parameter, process; 8.. according to the counterbore processing request, whether diameter and the side surface roughness of measuring counterbore be up to standard, if the counter bore side roughness has reached the high precision technology requirement of setting, so just finish the counterbore processing to this through hole of gas turbine, carry out the counterbore processing of next through hole; If the counter bore side roughness does not also reach the high precision technology requirement of setting, so this through hole counterbore of gas turbine is proceeded processing, until up to standard.
The present invention adopts mach mode to carry out high-precision counter bore side processing, it has not only satisfied the high accuracy process technology requirement of workpiece to be machined counterbore, and cancelled the underhand polish operation, working (machining) efficiency is improved greatly, significantly alleviate the labour intensity of pincers worker, production cost is also low, and the boring head specification is selected according to the diameter of counterbore, have very high versatility, its application value is high.It is not only applicable to the counter bore side processing to the extra high gas turbine connection holes of counter bore side specification requirement, processes applicable to the connection holes high accuracy counter bore side of thermoelectricity, nuclear steam turbine yet.
Claims (7)
1. method of described counter bore side being processed with machining device for counter bore side of connection hole of turbine rotor, described processing unit (plant) comprises ABS knife bar (1), copper sheathing (3), scraping cutter bar (4) and boring head (5), described scraping cutter bar (4) one ends are connected with the ABS knife bar, the other end is provided with boring head (5), this boring head is the indexable cutter head of fine setting, copper sheathing (3) is installed on the scraping cutter bar (4), it is characterized in that: said method comprising the steps of:
1.. will connect into whole scraping cutter bar and ABS knife bar and be assemblied on the handle of a knife, and be connected to the main shaft end face of Digit Control Machine Tool;
2.. at scraping cutter bar copper sheathing is installed;
3.. start lathe, knife bar is penetrated in the through hole of workpiece to be machined, and expose the position that boring head is installed on the scraping cutter bar;
4.. boring head is installed, according to counter bore hole diameters, is adjusted the boring head position;
5.. the trial cut counter bore side, light goes out to measure the position of counter bore hole diameters;
6.. measure the counterbore aperture, according to the counterbore processing request, again adjust boring head;
7.. according to the counterbore processing request, select cutting parameter, process;
8.. according to the counterbore processing request, whether diameter and the side surface roughness of measuring counterbore be up to standard, continuation processing not up to standard, end processing up to standard.
2. described method of described counter bore side being processed with machining device for counter bore side of connection hole of turbine rotor according to claim 1, it is characterized in that: described scraping cutter bar (4) is band Morse taper shank scraping cutter bar, and the taper shank of scraping cutter bar (4) is the outer cone standard Morse taper shank (6) with tang.
3. described method of described counter bore side being processed with machining device for counter bore side of connection hole of turbine rotor according to claim 1, it is characterized in that: an end of described ABS knife bar (1) be provided with scraping cutter bar (4) with the suitable tang mohs tapered bore of the outer cone standard Morse taper shank (6) of tang, the outer cone standard Morse taper shank (6) with tang of scraping cutter bar (4) is packed in the tang mohs tapered bore of ABS knife bar (1).
4. described method of described counter bore side being processed with machining device for counter bore side of connection hole of turbine rotor according to claim 3, it is characterized in that: described ABS knife bar (1) adopts the spot welding mode to fix with being connected of scraping cutter bar (4).
5. described method of described counter bore side being processed with machining device for counter bore side of connection hole of turbine rotor according to claim 1, it is characterized in that: described ABS knife bar (1) is band tang Morse taper shank ABS module.
6. described method of described counter bore side being processed with machining device for counter bore side of connection hole of turbine rotor according to claim 1, it is characterized in that: described boring head (5) is installed on the scraping cutter bar (4) by the through hole that radially arranges on the scraping cutter bar (4).
7. described method of described counter bore side being processed with machining device for counter bore side of connection hole of turbine rotor according to claim 1, it is characterized in that: step 6. described measurement is to measure with dial bore gage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010186134 CN101844241B (en) | 2010-05-22 | 2010-05-22 | Machining device for counter bore side of connection hole of turbine rotor and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010186134 CN101844241B (en) | 2010-05-22 | 2010-05-22 | Machining device for counter bore side of connection hole of turbine rotor and method thereof |
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| Publication Number | Publication Date |
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| CN101844241A CN101844241A (en) | 2010-09-29 |
| CN101844241B true CN101844241B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010186134 Active CN101844241B (en) | 2010-05-22 | 2010-05-22 | Machining device for counter bore side of connection hole of turbine rotor and method thereof |
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| CN102139386B (en) * | 2011-03-23 | 2012-08-29 | 桂林机床股份有限公司 | Boring method for modular long-distance group holes |
| CN102756180A (en) * | 2012-07-06 | 2012-10-31 | 沪东中华造船(集团)有限公司 | Machining device and machining method of bolt mounting part of lower plane of ship equipment base |
| CN103949681A (en) * | 2014-05-13 | 2014-07-30 | 常州南车柴油机零部件有限公司 | Connecting rod of fine boring cutter for stepped hole and method for machining stepped hole by using connecting rod |
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| CN106424835A (en) * | 2016-12-13 | 2017-02-22 | 安阳睿恒数控机床股份有限公司 | Fine boring apparatus based on common boring bar |
| CN106735386B (en) * | 2016-12-26 | 2018-11-27 | 渤海造船厂集团有限公司 | Conical bore end-face processing method |
| CN106735475B (en) * | 2017-02-20 | 2018-06-19 | 湖南南方宇航高精传动有限公司 | A kind of processing method of bearing hole inner side end |
| CN107186228B (en) * | 2017-06-30 | 2019-07-09 | 贵州凯星液力传动机械有限公司 | A kind of superdeep holes precision cutting tool for boring processing method and high accurate hole processing method |
| CN110185609B (en) * | 2019-06-18 | 2024-04-16 | 江苏德华泵业有限公司 | High-pressure gear sewage pump |
| CN113994943B (en) * | 2021-11-04 | 2022-12-06 | 西安锦威电子科技有限公司 | Passive building intelligent energy-saving control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2387992Y (en) * | 1999-09-30 | 2000-07-19 | 吴希全 | Horizontal boring machine |
| CN101157147A (en) * | 2007-11-16 | 2008-04-09 | 东方电气集团东方汽轮机有限公司 | Boring machine |
| CN101543963A (en) * | 2009-05-15 | 2009-09-30 | 无锡文汇机械有限公司 | Reverse scraper lever structure |
-
2010
- 2010-05-22 CN CN 201010186134 patent/CN101844241B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2387992Y (en) * | 1999-09-30 | 2000-07-19 | 吴希全 | Horizontal boring machine |
| CN101157147A (en) * | 2007-11-16 | 2008-04-09 | 东方电气集团东方汽轮机有限公司 | Boring machine |
| CN101543963A (en) * | 2009-05-15 | 2009-09-30 | 无锡文汇机械有限公司 | Reverse scraper lever structure |
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