CN105081418A - Numerical control machining method for main propeller rotor foam - Google Patents
Numerical control machining method for main propeller rotor foam Download PDFInfo
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- CN105081418A CN105081418A CN201410206480.7A CN201410206480A CN105081418A CN 105081418 A CN105081418 A CN 105081418A CN 201410206480 A CN201410206480 A CN 201410206480A CN 105081418 A CN105081418 A CN 105081418A
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- parts
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- pressing strip
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2215/00—Details of workpieces
- B23C2215/04—Aircraft components
- B23C2215/045—Propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention belongs to the helicopter main propeller rotor machining technology and particularly relates to a numerical control machining method for main propeller rotor foam. Edge pressing strips not shorter than parts are used for pressing machined parts, and actual parts are arranged between the edge pressing strips on the two sides; actual comparison is conducted through digital analogy, the length and the width of the edge pressing strips are determined, and non-interference pressing positions are measured; and bolt holes are machined in a vacuum clamp for absorption machining, multiple round supporting sleeves thinner than the foam by 0.5 mm are machined at the ends of the parts to serve as rear feet to explore the die pressing capacity of the foam, the parts are pressed and fixed, and then back gouging milling cutter wide-line machining is conducted on the parts in the length direction of the edge pressing strips. According to the numerical control machining method for the main propeller rotor foam, the parts are evenly pressed through vacuum adsorption and pressing of the edge pressing strips, machining errors are effectively reduced, the rolled throughout yield of the parts reaches 99%, and therefore cost is greatly reduced.
Description
Technical field
The invention belongs to Helicopter Main oar rotor process technology, be specifically related to a kind of main oar rotor foam numerical-control processing method.
Background technology
When digital control processing type lift system main slurry rotor foam, because pressing plate compression area is little, after clamping, partial points has metaboly.Prior art carries out adding man-hour:
First coordinate is that pressing plate compresses partial points, and profile in processing, part dimorphism face thickness tolerance is positive and negative 0.2mm.Shortcoming: on part, plane (reverse side datum level) cannot be processed, datum level part blank flatness ensures, part first surface profile and datum level have about 0.1mm error (it is about 0.2mm that dimorphism face processes cumulative errors).
Second coordinate system processing scheme: between two pressing plates, there is gap 0.1-0.3mm local, add that part first surface profile and datum level have about 0.1mm error (it is about 0.2mm that dimorphism face processes cumulative errors), theoretical error sum total is large between 0.3-0.6, causes parts locally point overproof.
After machining, there is obvious partial points overproof in product, cannot, by the detection of three coordinate measuring machine, cause part rejection rate more than 90%.Adopt rose cutter capable blanking method, during the upper and lower profile of processing parts, process time is longer, Digit Control Machine Tool resource serious waste simultaneously.
Summary of the invention
The object of the invention is: propose the main oar rotor foam numerical-control processing method that a kind ofly can to compress evenly, mismachining tolerance is little, working (machining) efficiency is high.
Technical scheme of the present invention is: a kind of main oar rotor foam numerical-control processing method, it adopts the edge-pressing strip not being shorter than part length to compress processing parts, it is actual parts between the edge-pressing strip of both sides, actual specific pair is carried out by digital-to-analogue, determine the length and width of edge-pressing strip, measure the compacted position of not interfering, vacuum fixture for adsorbing processing processes bolt hole, to groping of foam molding capacity, do several in part end and hold round cover lower than propping up of depth of foam 0.5MM, as the rear foot, complete being fixed part, then along edge-pressing strip length direction, the wide row processing of back chipping milling cutter is carried out to part.
Described main oar rotor foam numerical-control processing method, its detailed process is as follows:
Step 1: make and prepare fixture
Square aluminium sheet mills out the netted groove that 6mm is wide, 5.7mm is dark;
Make the prolate type aluminum strip that a length is not shorter than part length, and on aluminum strip, offer three circular grooves;
Prepare a clamping bolt;
Making one is for the support bushing of clamping bolt presses;
Step 2: part first coordinate system is processed
First use vacuum adsorption fixture adsorbent parts bottom surface, then the wide row processing of back chipping milling cutter is carried out at part reverse side datum level and profile, and ensure the plane parallelism of first surface profile and datum level, and by ensureing that the firm of vacuum suction strictly can control gauge, ensure that the thrust of part reverse side clamping;
Step 3: part second coordinate system is processed
Use edge-pressing strip compressing component, pass through digital-to-analogue, measure the compacted position of not interfering, vacuum adsorption fixture processes bolt hole, does 6 in part end and hold round cover, as the rear foot lower than propping up of depth of foam 0.5MM, to control compression dynamics, part lower surface and clamp body are fitted completely, and thrust is greater than cutting force, then carry out the wide row processing of back chipping milling cutter to part along edge-pressing strip length direction.
Advantage of the present invention is: the present invention's main oar rotor foam numerical-control processing method compresses by adopting vacuum suction and compressing limit, make part pressurized even, effective reduction mismachining tolerance, makes part by one-step hand over inspection qualification rate to reach 99%, thus greatly reduces cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's main oar rotor foam numerical-control processing method vacuum adsorption fixture;
Wherein, 1-9 screwed hole, 2-vacuum fixture, 3-interval 100MM netted groove,
Fig. 2 is the schematic diagram of the edge-pressing strip of the present invention's main oar rotor foam numerical-control processing method;
Fig. 3 is the structural representation of support bushing;
Fig. 4 is the structural representation of hold-down bolt;
Fig. 5 is the schematic diagram after the processing of part first coordinate system;
Wherein, 4-10 processing support platform, 5-second coordinate system locating hole, 6-hold-down bolt hole, 7-part,
Fig. 6 is the schematic diagram after part second coordinate system clamping:
Wherein, 8-hold-down bolt, 9-second coordinate system locating hole, 10-support sleeve, 11-edge-pressing strip, 12-vacuum fixture.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
The present invention's main oar rotor foam numerical-control processing method adopts the edge-pressing strip not being shorter than part length to compress processing parts, it is actual parts between the edge-pressing strip of both sides, actual specific pair is carried out by digital-to-analogue, determine the length and width of edge-pressing strip, measure the compacted position of not interfering, vacuum fixture for adsorbing processing processes bolt hole, to groping of foam molding capacity, do several in part end and hold round cover lower than propping up of depth of foam 0.5MM, as the rear foot, complete being fixed part, then along edge-pressing strip length direction, the wide row processing of back chipping milling cutter is carried out to part.
Introduce the specific implementation process of the present invention's main oar rotor foam numerical-control processing method below in conjunction with accompanying drawing, its step is as follows:
Step 1: make and prepare fixture
As shown in Figure 1, at interval of 100MM on square aluminium sheet, mill out the netted groove that 6mm is wide, 5.7mm is dark, use as the air channel of vacuum suction and the sealing layout of sealing joint strip.Then by the Mathematical Model Analysis to part, make 9 thread Pilot holes, as the compression point of reverse side second coordinate system, make the processing of two coordinate systems of part, can complete on a fixture;
As shown in Figure 2, make the prolate type aluminum strip that a length is not shorter than part length, and on aluminum strip, offer three circular grooves, flute pitch is consistent with Fig. 1 fixture thread Pilot hole, and have the length direction mobile space of about 5MM, ensure the little and 0.1MM of the flatness of prolate type aluminum strip simultaneously;
As shown in Figure 3, making one is for the support bushing 6 of clamping bolt presses, and ensure that lining endoporus is greater than bolt thread diameter 2MM, length is less than part thickness 0.5MM, and upper and lower two plane flatnesses are not more than 0.1MM;
As shown in Figure 4, a clamping bolt is prepared;
Step 2: part first coordinate system is processed
As shown in Figure 5, part adds man-hour carrying out the first coordinate system, first use sealing joint strip, on vacuum adsorption fixture, it is long that layout one is less than part, wide rectangular closed ring, with vacuum adsorption fixture adsorbent parts bottom surface, determine origin of coordinates position, then processing parts reverse side datum level and profile, the wide row processing of back chipping milling cutter is adopted during processing profile, and the thickness program by working out, the plane parallelism of first surface profile and datum level can be ensured, error is almost nil, and by ensureing that the firm of vacuum suction strictly can control gauge, ensure that the thrust of part reverse side clamping, in the first coordinate system processing, between every 300MM distance the processing support platform reserved, for the second coordinate system supports, to prevent because part is long, produce downward distortion,
Step 3: part second coordinate system is processed
As shown in Figure 6, use edge-pressing strip compressing component, pass through digital-to-analogue, measure the compacted position of not interfering, vacuum adsorption fixture processes bolt hole, do 6 in part end and hold round cover lower than propping up of depth of foam 0.5MM, as the rear foot, to control compression dynamics, part lower surface and clamp body are fitted completely, and thrust is greater than cutting force.Then by two locating holes, part is looked for directly, determine origin of coordinates position, look for the coordinate system spinfunction directly can applying Digit Control Machine Tool, carry out fast aligning, afterwards along edge-pressing strip length direction, the wide row processing of back chipping milling cutter is carried out to part.
Claims (2)
1. a main oar rotor foam numerical-control processing method, it is characterized in that, the edge-pressing strip not being shorter than part length is adopted to compress processing parts, it is actual parts between the edge-pressing strip of both sides, actual specific pair is carried out by digital-to-analogue, determine the length and width of edge-pressing strip, measure the compacted position of not interfering, vacuum fixture for adsorbing processing processes bolt hole, to groping of foam molding capacity, do several in part end and hold round cover lower than propping up of depth of foam 0.5MM, as the rear foot, complete being fixed part, then along edge-pressing strip length direction, the wide row processing of back chipping milling cutter is carried out to part.
2. main oar rotor foam numerical-control processing method according to claim 1, it is characterized in that, detailed process is as follows:
Step 1: make and prepare fixture
Square aluminium sheet mills out the netted groove that 6mm is wide, 5.7mm is dark;
Make the prolate type aluminum strip that a length is not shorter than part length, and on aluminum strip, offer three circular grooves;
Prepare a clamping bolt;
Making one is for the support bushing of clamping bolt presses;
Step 2: part first coordinate system is processed
First use vacuum adsorption fixture adsorbent parts bottom surface, then the wide row processing of back chipping milling cutter is carried out at part reverse side datum level and profile, and ensure the plane parallelism of first surface profile and datum level, make the two parallel, and by ensureing that the firm of vacuum suction strictly can control gauge, ensure that the thrust of part reverse side clamping;
Step 3: part second coordinate system is processed
Use edge-pressing strip compressing component, pass through digital-to-analogue, measure the compacted position of not interfering, vacuum adsorption fixture processes bolt hole, does 6 in part end and hold round cover, as the rear foot lower than propping up of depth of foam 0.5MM, to control compression dynamics, part lower surface and clamp body are fitted completely, and thrust is greater than cutting force, then carry out the wide row processing of back chipping milling cutter to part along edge-pressing strip length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410206480.7A CN105081418A (en) | 2014-05-16 | 2014-05-16 | Numerical control machining method for main propeller rotor foam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410206480.7A CN105081418A (en) | 2014-05-16 | 2014-05-16 | Numerical control machining method for main propeller rotor foam |
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| CN105081418A true CN105081418A (en) | 2015-11-25 |
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| CN201410206480.7A Pending CN105081418A (en) | 2014-05-16 | 2014-05-16 | Numerical control machining method for main propeller rotor foam |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499673A (en) * | 2016-01-20 | 2016-04-20 | 哈尔滨飞机工业集团有限责任公司 | Processing method of small thin shape-variable single-sided processed part |
| CN105710424A (en) * | 2016-04-06 | 2016-06-29 | 哈尔滨飞机工业集团有限责任公司 | Numerical control machining method of flight simulation ice-type foam block |
| CN105818410A (en) * | 2016-04-06 | 2016-08-03 | 哈尔滨飞机工业集团有限责任公司 | Main blade foam filling block machining method of helicopter rotor system |
| CN107442824A (en) * | 2017-07-31 | 2017-12-08 | 成都飞机工业（集团）有限责任公司 | A kind of titanium alloy thin wall one side frame class part vacuum suction numerical-control processing method |
| CN108688193A (en) * | 2017-04-12 | 2018-10-23 | 中国商用飞机有限责任公司 | The dimension shape method and its semi-finished product of structural foam, the method for mechanical processing and its structural foam forming part |
| CN108817488A (en) * | 2018-06-14 | 2018-11-16 | 西北工业大学 | The double column lathe accuracy calibrating methods of the combined numerically controlled milling of integral blade disk |
| CN110385466A (en) * | 2019-08-07 | 2019-10-29 | 沈阳飞机工业（集团）有限公司 | A kind of numerical-control processing method of titanium alloy ultra-large type complex thin-wall component |
| CN111421358A (en) * | 2020-05-22 | 2020-07-17 | 西安飞机工业（集团）有限责任公司 | Ultrasonic numerical control milling positioning method for aramid paper honeycomb core |
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| CN103534183A (en) * | 2011-05-09 | 2014-01-22 | 韩国气压系统有限公司 | Device for vacuum gripping |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499673A (en) * | 2016-01-20 | 2016-04-20 | 哈尔滨飞机工业集团有限责任公司 | Processing method of small thin shape-variable single-sided processed part |
| CN105710424A (en) * | 2016-04-06 | 2016-06-29 | 哈尔滨飞机工业集团有限责任公司 | Numerical control machining method of flight simulation ice-type foam block |
| CN105818410A (en) * | 2016-04-06 | 2016-08-03 | 哈尔滨飞机工业集团有限责任公司 | Main blade foam filling block machining method of helicopter rotor system |
| CN105710424B (en) * | 2016-04-06 | 2017-11-28 | 哈尔滨飞机工业集团有限责任公司 | A kind of flight simulation ice type foam block numerical-control processing method |
| CN108688193A (en) * | 2017-04-12 | 2018-10-23 | 中国商用飞机有限责任公司 | The dimension shape method and its semi-finished product of structural foam, the method for mechanical processing and its structural foam forming part |
| CN108688193B (en) * | 2017-04-12 | 2021-08-31 | 中国商用飞机有限责任公司 | Method for dimensional forming of structural foam material and method for machining |
| CN107442824A (en) * | 2017-07-31 | 2017-12-08 | 成都飞机工业（集团）有限责任公司 | A kind of titanium alloy thin wall one side frame class part vacuum suction numerical-control processing method |
| CN108817488A (en) * | 2018-06-14 | 2018-11-16 | 西北工业大学 | The double column lathe accuracy calibrating methods of the combined numerically controlled milling of integral blade disk |
| CN108817488B (en) * | 2018-06-14 | 2020-04-03 | 西北工业大学 | Precision calibration method for blisk composite numerical control milling double-column machine tool |
| CN110385466A (en) * | 2019-08-07 | 2019-10-29 | 沈阳飞机工业（集团）有限公司 | A kind of numerical-control processing method of titanium alloy ultra-large type complex thin-wall component |
| CN110385466B (en) * | 2019-08-07 | 2021-03-19 | 沈阳飞机工业（集团）有限公司 | Numerical control machining method for titanium alloy ultra-large complex thin-wall part |
| CN111421358A (en) * | 2020-05-22 | 2020-07-17 | 西安飞机工业（集团）有限责任公司 | Ultrasonic numerical control milling positioning method for aramid paper honeycomb core |
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Application publication date: 20151125 |