CN103769679A - Method for improving broaching precision of mortises in excircle of wheel disc part - Google Patents
Method for improving broaching precision of mortises in excircle of wheel disc part Download PDFInfo
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- CN103769679A CN103769679A CN201410017817.XA CN201410017817A CN103769679A CN 103769679 A CN103769679 A CN 103769679A CN 201410017817 A CN201410017817 A CN 201410017817A CN 103769679 A CN103769679 A CN 103769679A
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- wheel disc
- broaching
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Abstract
The invention discloses a method for improving the broaching precision of mortises in the excircle of a wheel disc part and belongs to the technical field of aero-engine part manufacturing. The adopted technical scheme is that the method comprises the following steps: installing an excircle process platform with a plurality of angular locating slots on the excircle of the to-be-processed wheel disc part; installing two angular locating slots in the excircle process platform if the number of the mortises in the excircle of the to-be-processed wheel disc part is an even number, and broaching the mortises of the wheel disc part in twice; installing three angular locating slots in the excircle process platform if the number of the mortises in the excircle of the to-be-processed wheel disc part is an add number, and broaching the mortises of the wheel disc part in three times. According to the method disclosed by the invention, the contact area between locating surfaces of the mortises of the part and an included angle is effectively increased, so that the stability of fixture positioning is enhanced. Meanwhile, the part angular displacement caused by an angular component generated by broaching is decomposed. The method is simple in operation and skillful in design. Through the method, the fixture rigidity can be greatly enhanced, the deformation of the broached part is reduced, and the dimensional precision of the part is improved.
Description
Technical field
The invention belongs to aero-engine Parts manufacturing technology field, be specifically related to a kind of method that improves wheel disc part outer tongue-and-groove broaching precision.
Background technology
In traditional wheel disc part outer tongue-and-groove broaching process, be to position by unique axial benchmark, radial reference and angle benchmark, the cylindrical tongue-and-groove of broaching successively.This processing technology is simple to design of part, and the wheel disc part that does not affect positioning fixture rigid design can guarantee tongue-and-groove broaching precision.And for the more complicated part of structure, the wheel disc part of restriction positioning fixture rigid design, broach according to a conventional method after tongue-and-groove, between part upper tenon groove, area is very little, only have the locating surface of small size to contact with fixture, the simultaneously accumulation of the site error between tongue-and-groove, cause difficult positioning turntable part broaching tongue-and-groove after part deformation larger, size is difficult to guarantee.
Summary of the invention
The defect existing in order to overcome above-mentioned prior art, the object of the present invention is to provide a kind of method that improves wheel disc part outer tongue-and-groove broaching precision, the method can effectively solve and be difficult to the problem guaranteeing because of the wheel disc part positioning fixture poor rigidity part deformation tongue-and-groove precision after tongue-and-groove that causes broaching.
The present invention is achieved through the following technical solutions:
A method that improves wheel disc part outer tongue-and-groove broaching precision is the cylindrical process area that is 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, on round process area, two angle locating slots are set, the tongue-and-groove of the wheel disc part of having broached at twice outside; If the tongue-and-groove number of wheel disc part outer to be processed is odd number, on round process area, three angle locating slots are set outside, divide the tongue-and-groove of the 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, with first angle locating slot location, the tongue-and-groove of the odd bits of first broaching, and then locate the tongue-and-groove of the even bit of broaching with second angle groove.
If the tongue-and-groove number of wheel disc part outer to be processed is odd number, with first angle locating slot location, the 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.
When broaching tongue-and-groove, carry out calibration by wheel disc part tongue-and-groove sum to be processed.
Described calibration refers to: when 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 that part rotates on fixture in the time of broaching tongue-and-groove, once broach in the angle location that Broaching Technology in prior art is continued to use always, be adjusted into two (or three) angles location twice (or three times) tongue-and-groove of broach and process, 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, decomposed the part angular displacement that the angle component that produces due to broaching causes simultaneously.The inventive method is simple to operate, designs ingeniously, can greatly strengthen fixture rigidity by this method, reduces part deformation amount after broaching, improves parts size precision.
Further, the present invention carries out calibration by wheel disc part tongue-and-groove sum to be processed in the time of broaching tongue-and-groove, while broaching tongue-and-groove, angle between adjacent angle locating slot is 360 °/tongue-and-groove number, no matter the tongue-and-groove number of wheel disc part outer to be processed is odd number or even number, the setting of angle locating slot angle can guarantee 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 two angle locating slot structural representations of fan wheel disc part of the present invention.
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.
The specific embodiment
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 that improves wheel disc part outer tongue-and-groove broaching precision of the present invention, adopt the design of cylindrical process area, can increase fixture radial thickness, strengthen rigidity, adopt two (or three) angle locating slots, by twice (or three times) clamping, broaching, increase the circumferential position length of fixture, further strengthen 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, the odd bits of first broaching tongue-and-groove, 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, with first angle locating slot location, the 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, when broaching tongue-and-groove, total index dial calibration must be counted calibration by groove, while 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.
Broach 24 tongue-and-grooves as example take the first order fan wheel disc of certain engine below, set forth the method for raising wheel disc part outer tongue-and-groove broaching precision of the present invention:
1) test block is placed on fixture to broaching 1 tongue-and-groove after locating and compressing, 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, broaching is to putting two grooves, projection check tongue-and-groove radius and side-play amount;
3) after passed examination, cylindrical process area is placed on fixture, with an angle locating slot location on cylindrical process area, and pushes down cylindrical process area with gland, gland is compressed to 12 tongue-and-grooves of broaching odd bits; Referring to Fig. 1, comprising level Four location, 1 is two adjacent angle locating slots, and 2 is the locating surface between tongue-and-groove and the tongue-and-groove of broaching, and 3 for radial location endoporus, mainly plays a supportive role; 4 is the tongue-and-groove of 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) unclamp gland, by 15 ° of cylindrical process area rotations, (angle between two angle locating slots is 360 °/24=15 °, referring to 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 to 12 tongue-and-grooves of broaching even bit.
After having broached, check size, form and position tolerance and the technical conditions of first order fan wheel disc, obtain meeting completely the wheel disc part of designing requirement.
Claims (5)
1. a method that improves wheel disc part outer tongue-and-groove broaching precision, is characterized in that, is provided with the cylindrical process area of 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, on round process area, two angle locating slots are set, the tongue-and-groove of the wheel disc part of having broached at twice outside; If the tongue-and-groove number of wheel disc part outer to be processed is odd number, on round process area, three angle locating slots are set outside, divide the tongue-and-groove of the wheel disc part of having broached for three times.
2. a kind of method that improves 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, with first angle locating slot location, the tongue-and-groove of the odd bits of first broaching, and then locate the tongue-and-groove of the even bit of broaching with second angle groove.
3. a kind of method that improves 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, with first angle locating slot location, first the first groove of 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.
4. according to a kind of method that improves wheel disc part outer tongue-and-groove broaching precision described in any one in claim 1～3, it is characterized in that, when broaching tongue-and-groove, carry out calibration by wheel disc part tongue-and-groove sum to be processed.
5. a kind of method that improves wheel disc part outer tongue-and-groove broaching precision according to claim 4, is characterized in that, described calibration refers to: when 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN103769679A (en) | 2014-05-07 |
| CN103769679B CN103769679B (en) | 2016-04-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378019A (en) * | 2017-09-13 | 2017-11-24 | 湖南南方通用航空发动机有限公司 | The mortice processing device of compressor disk |
| CN109454290A (en) * | 2018-11-14 | 2019-03-12 | 中国航发动力股份有限公司 | A kind of burr removing device for tongue-and-groove outlet |
| CN111702610A (en) * | 2020-07-07 | 2020-09-25 | 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 |
| CN113664286A (en) * | 2021-09-30 | 2021-11-19 | 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 |
| CN113857561A (en) * | 2021-12-02 | 2021-12-31 | 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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| 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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| 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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| US20050175461A1 (en) * | 2004-02-10 | 2005-08-11 | General Electric Company | Advanced firtree and broach slot forms for turbine stage 3 buckets and rotor wheels |
| 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 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378019A (en) * | 2017-09-13 | 2017-11-24 | 湖南南方通用航空发动机有限公司 | The mortice processing device of compressor disk |
| 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 |
| CN109454290A (en) * | 2018-11-14 | 2019-03-12 | 中国航发动力股份有限公司 | A kind of burr removing device for tongue-and-groove outlet |
| CN111702610A (en) * | 2020-07-07 | 2020-09-25 | 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 |
| 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 |
| CN113664286A (en) * | 2021-09-30 | 2021-11-19 | 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 |
| CN113857561A (en) * | 2021-12-02 | 2021-12-31 | 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 |
| 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 |
| CN114918482B (en) * | 2022-06-21 | 2024-07-09 | 中国航发贵州黎阳航空动力有限公司 | Machining method for large turbine disc width mortises |
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| CN103769679B (en) | 2016-04-06 |
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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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