CN103769679B - A kind of method improving wheel disc part outer tongue-and-groove broaching precision - Google Patents
A kind of method improving wheel disc part outer tongue-and-groove broaching precision Download PDFInfo
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- CN103769679B CN103769679B CN201410017817.XA CN201410017817A CN103769679B CN 103769679 B CN103769679 B CN 103769679B CN 201410017817 A CN201410017817 A CN 201410017817A CN 103769679 B CN103769679 B CN 103769679B
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- groove
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- disc part
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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention discloses a kind of method improving wheel disc part outer tongue-and-groove broaching precision, belong to aircraft engine parts manufacturing technology field.The technical scheme adopted is: the cylindrical process area being provided with several angle locating slots on wheel disc part outer to be processed; If the tongue-and-groove number of wheel disc part outer to be processed is even number, then justifies outside on process area and two angle locating slots are set, the tongue-and-groove of wheel disc part of having broached at twice; If the tongue-and-groove number of wheel disc part outer to be processed is odd number, then justifies outside on process area and three angle locating slots are set, divide the tongue-and-groove of wheel disc part of having broached for three times.The present invention increase effectively the area that part tongue-and-groove locating surface contacts with angle, improve the stability of fixture location, decomposed the part angular displacement that the angle component that produces due to broaching causes simultaneously, simple to operate, design ingenious, can greatly strengthen fixture rigidity by this method, reduce the rear part deformation amount of broaching, improve parts size precision.
Description
Technical field
The invention belongs to aircraft engine parts manufacturing technology field, be specifically related to a kind of method improving wheel disc part outer tongue-and-groove broaching precision.
Background technology
In traditional wheel disc part outer tongue-and-groove broaching process, be positioned by unique axial benchmark, radial reference and angle benchmark, cylindrical tongue-and-groove of broaching successively.This processing technology is simple to design of part, and the wheel disc part not affecting positioning fixture rigid design can ensure tongue-and-groove broaching precision.And for the more complicated part of structure, the wheel disc part of restriction positioning fixture rigid design, according to a conventional method after broaching tongue-and-groove, between part upper tenon groove, area is very little, only have locating surface and the holder contacts of small size, site error accumulation simultaneously between tongue-and-groove, after causing difficult positioning turntable part broaching tongue-and-groove, part deformation is comparatively large, and size is difficult to ensure.
Summary of the invention
In order to overcome the defect that above-mentioned prior art exists, the object of the present invention is to provide a kind of method improving wheel disc part outer tongue-and-groove broaching precision, after the method effectively can solve and cause broaching tongue-and-groove because of wheel disc part positioning fixture poor rigidity, part deformation tongue-and-groove precision is difficult to the problem ensured.
The present invention is achieved through the following technical solutions:
Improving a method for wheel disc part outer tongue-and-groove broaching precision, is the cylindrical process area being provided with several angle locating slots on wheel disc part outer to be processed;
If the tongue-and-groove number of wheel disc part outer to be processed is even number, then justifies outside on process area and two angle locating slots are set, the tongue-and-groove of wheel disc part of having broached at twice; If the tongue-and-groove number of wheel disc part outer to be processed is odd number, then justifies outside on process area and three angle locating slots are set, divide the tongue-and-groove of wheel disc part of having broached for three times.
If the tongue-and-groove number of wheel disc part outer to be processed is even number, then with first angle locating slot location, the tongue-and-groove of odd bits of first broaching, and then locate with second angle groove, the tongue-and-groove of broaching even bit.
If the tongue-and-groove number of wheel disc part outer to be processed is odd number, then with first angle locating slot location, first groove of first broaching, then with second angle locating slot location, the tongue-and-groove of broaching even bit, finally with the 3rd angle locating slot location, the odd bits tongue-and-groove of broaching except first groove.
Calibration is carried out by the tongue-and-groove sum that wheel disc part is to be processed during broaching tongue-and-groove.
Described calibration refers to: during broaching tongue-and-groove, the angle between several angle locating slots of setting is 360 °/tongue-and-groove number; Wherein, tongue-and-groove number is the tongue-and-groove sum of wheel disc part outer to be processed.
Compared with prior art, the present invention has following useful technique effect:
The present invention adopts Excircle machining platform to realize the axial location of part on wheel disc part outer to be processed, can prevent the part when broaching tongue-and-groove from rotating on fixture, once broach in an angle location of Broaching Technology in prior art always being continued to use, be adjusted to two (or three) angles location twice (or three times) tongue-and-groove of broach to process, namely tongue-and-groove in two batches (or three batches) broached.This method is after the 1st angle location broaching, part increases 2 times with broaching fixture location area than the location area of all tongue-and-grooves of once having broached in prior art, improve the stability of fixture location, decompose the part angular displacement that the angle component that produces due to broaching causes simultaneously.The inventive method is simple to operate, designs ingenious, can greatly strengthen fixture rigidity by this method, reduces the rear part deformation amount of broaching, improves parts size precision.
Further, the present invention carries out calibration when broaching tongue-and-groove by the tongue-and-groove sum that wheel disc part is to be processed, namely during broaching tongue-and-groove, angle between adjacent angle locating slot is 360 °/tongue-and-groove number, tongue-and-groove number regardless of wheel disc part outer to be processed is odd number or even number, and the setting of angle locating slot angle can ensure that the tongue-and-groove of broaching out is uniform at wheel disc part outer.
Accompanying drawing explanation
Fig. 1 is fan wheel disc part of the present invention location schematic diagram;
Fig. 2 is the tenon groove structure schematic diagram that fan wheel disc part of the present invention is broached out;
Fig. 3 is fan wheel disc part of the present invention two angle locating slot structural representations.
Fig. 4 is the schematic diagram that fan wheel disc part tongue-and-groove of the present invention distributes on part outer.
Wherein, 1 is angle locating slot; 2 is tongue-and-groove locating surface; 3 is endoporus; 4 is tongue-and-groove.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the present invention is described in further detail, and the explanation of the invention is not limited.
A kind of method improving wheel disc part outer tongue-and-groove broaching precision of the present invention, adopt the design of cylindrical process area, fixture radial thickness can be increased, strengthen rigidity, adopt two (or three) angle locating slots, by twice (or three times) clamping, broaching, increase fixture circumference position length, further enhancing fixture rigidity, by tongue-and-groove in two batches (or three batches) broached:
If the tongue-and-groove number of wheel disc part outer to be processed is even number, i.e. available first angle locating slot location, odd bits tongue-and-groove of first broaching, then with second angle groove location, broaching even bit tongue-and-groove;
If the tongue-and-groove number of wheel disc part outer to be processed is odd number, then with first angle locating slot location, first groove of first broaching, then with second angle locating slot location, the tongue-and-groove of broaching even bit, finally with the 3rd angle locating slot location, the odd bits tongue-and-groove of broaching except first groove.
No matter the tongue-and-groove number of wheel disc part outer to be processed is odd number or even number, during broaching tongue-and-groove, total index dial calibration must by groove number calibration, namely during broaching tongue-and-groove, the angle between several angle locating slots of setting is 360 °/tongue-and-groove number; Wherein, tongue-and-groove number is the tongue-and-groove sum of wheel disc part outer to be processed.
To broach 24 tongue-and-grooves for the first order fan wheel disc of certain engine below, set forth the method for raising wheel disc part outer tongue-and-groove of the present invention broaching precision:
1) test block is placed on fixture, locates and compress rear broaching 1 tongue-and-groove, the grooved of this tongue-and-groove of projection check;
2) after checking that grooved is qualified, test ring is placed on fixture, and pushes down test ring with gland, after centering, gland is compressed, broach to point two groove, projection check tongue-and-groove radius and side-play amount;
3) after passed examination, cylindrical process area is placed on fixture, with the angle locating slot location of on cylindrical process area, and pushes down cylindrical process area with gland, gland is compressed, 12 tongue-and-grooves of broaching odd bits; See Fig. 1, comprising level Four location, 1 is two adjacent angle locating slots, and 2 be the locating surface between the tongue-and-groove of broaching and tongue-and-groove, and 3 is radial location endoporus, mainly plays a supportive role; 4 tongue-and-grooves for broaching out; Fig. 2 is the tenon groove structure schematic diagram of broaching out; Fig. 4 is the schematic diagram that fan wheel disc part tongue-and-groove of the present invention distributes on part outer.
4) gland is unclamped, (angle between two angle locating slots is 360 °/24=15 ° cylindrical process area to be rotated 15 °, see Fig. 3) after, with the another one angle locating slot location on cylindrical process area, and push down cylindrical process area with gland, after centering, gland is compressed, 12 tongue-and-grooves of broaching even bit.
After having broached, check the size of first order fan wheel disc, form and position tolerance and technical conditions, met the wheel disc part of designing requirement completely.
Claims (5)
1. improve a method for wheel disc part outer tongue-and-groove broaching precision, it is characterized in that, wheel disc part outer to be processed is provided with the cylindrical process area of several angle locating slots;
If the tongue-and-groove number of wheel disc part outer to be processed is even number, then justifies outside on process area and two angle locating slots are set, the tongue-and-groove of wheel disc part of having broached at twice; If the tongue-and-groove number of wheel disc part outer to be processed is odd number, then justifies outside on process area and three angle locating slots are set, divide the tongue-and-groove of wheel disc part of having broached for three times.
2. a kind of method improving wheel disc part outer tongue-and-groove broaching precision according to claim 1, it is characterized in that, if the tongue-and-groove number of wheel disc part outer to be processed is even number, then with first angle locating slot location, the tongue-and-groove of odd bits of first broaching, and then locate with second angle groove, the tongue-and-groove of broaching even bit.
3. a kind of method improving wheel disc part outer tongue-and-groove broaching precision according to claim 1, it is characterized in that, if the tongue-and-groove number of wheel disc part outer to be processed is odd number, then with first angle locating slot location, first to broach first groove, then with second angle locating slot location, the tongue-and-groove of broaching even bit, finally with the 3rd angle locating slot location, the odd bits tongue-and-groove of broaching except first groove.
4., according to a kind of method improving wheel disc part outer tongue-and-groove broaching precision in claims 1 to 3 described in any one, it is characterized in that, during broaching tongue-and-groove, carry out calibration by the tongue-and-groove sum that wheel disc part is to be processed.
5. a kind of method improving wheel disc part outer tongue-and-groove broaching precision according to claim 4, it is characterized in that, described calibration refers to: during broaching tongue-and-groove, the angle between several angle locating slots of setting is 360 °/tongue-and-groove number; Wherein, tongue-and-groove number is the tongue-and-groove sum of wheel disc part outer to be processed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410017817.XA CN103769679B (en) | 2014-01-15 | 2014-01-15 | A kind of method improving wheel disc part outer tongue-and-groove broaching precision |
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| CN201410017817.XA CN103769679B (en) | 2014-01-15 | 2014-01-15 | A kind of method improving wheel disc part outer tongue-and-groove broaching precision |
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| CN103769679A CN103769679A (en) | 2014-05-07 |
| CN103769679B true CN103769679B (en) | 2016-04-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107378019B (en) * | 2017-09-13 | 2019-05-07 | 湖南南方通用航空发动机有限公司 | The mortice processing device of compressor disk |
| CN109454290B (en) * | 2018-11-14 | 2021-04-27 | 中国航发动力股份有限公司 | A burr clearing device for tongue-and-groove export |
| CN111702610B (en) * | 2020-07-07 | 2021-05-25 | 中国航发动力股份有限公司 | Engine wheel disc annular row special-shaped tongue-and-groove sharp edge treatment method |
| CN113664286B (en) * | 2021-09-30 | 2023-03-21 | 中国航发动力股份有限公司 | Switching disc for broaching mortise of disc parts and disc part machining device |
| CN113857561B (en) * | 2021-12-02 | 2022-02-15 | 中国航发燃气轮机有限公司 | Method for repairing scratch defect of gas turbine wheel disc fir-type tongue-and-groove working face |
| CN114918482A (en) * | 2022-06-21 | 2022-08-19 | 中国航发贵州黎阳航空动力有限公司 | Machining method for wide and large mortise of turbine disc |
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| CN102615336A (en) * | 2012-03-29 | 2012-08-01 | 哈尔滨汽轮机厂有限责任公司 | Broaching method of wheel disc of heavy combustion gas turbine |
| CN103433553A (en) * | 2013-08-06 | 2013-12-11 | 天津机辆轨道交通装备有限责任公司 | High-precision turbocharger rotary shaft turntable mortise pull tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8079817B2 (en) * | 2004-02-10 | 2011-12-20 | General Electric Company | Advanced firtree and broach slot forms for turbine stage 3 buckets and rotor wheels |
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- 2014-01-15 CN CN201410017817.XA patent/CN103769679B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2936520Y (en) * | 2006-05-08 | 2007-08-22 | 常州宝菱重工机械有限公司 | Indexing unit for processing large integral key shaft |
| CN101598126A (en) * | 2009-06-18 | 2009-12-09 | 宁波威克斯液压有限公司 | Master and auxiliary vane pump rotor processing technique |
| CN202271206U (en) * | 2011-09-20 | 2012-06-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Large-scale wheel disc chase mortise broaching clamp |
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| CN103769679A (en) | 2014-05-07 |
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Address after: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee after: AECC AVIATION POWER CO,LTD. Address before: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee before: AVIC AVIATION ENGINE Corp.,PLC |
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Address after: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee after: AVIC AVIATION ENGINE Corp.,PLC Address before: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee before: XI'AN AVIATION POWER Co.,Ltd. |
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