CN105666040B - A kind of aluminium snap-gauge numerical-control processing method - Google Patents
A kind of aluminium snap-gauge numerical-control processing method Download PDFInfo
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- CN105666040B CN105666040B CN201410652240.XA CN201410652240A CN105666040B CN 105666040 B CN105666040 B CN 105666040B CN 201410652240 A CN201410652240 A CN 201410652240A CN 105666040 B CN105666040 B CN 105666040B
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Abstract
The Computerized Numerical Control processing technology for boring riveting type frame locating clamp plate, the especially large-scale locating clamp plate processing technology of the riveting of fuselage part multistage type frame and fuselage general assembly type frame are assembled the invention belongs to aviation part.The present invention uses corresponding cutter and machined parameters in processing and loading clamp according to the variation of mechanical stress when snap-gauge material property and digital control processing, ensures the machining accuracy in strap clamp type face, and the deformations such as distortion after snap-gauge is processed, tilting are reduced or avoided.
Description
Technical field
The invention belongs to large size riveting type frame or general assembly type frame manufacturing technologies, and it is fixed in type frame to be especially used for airplane parts
The snap-gauge manufacturing method of position.
Background technology
Aircraft progress general assembly or component are riveted must position it or be bored riveting with type frame tooling, and type frame tooling relies on
Each frame locating clamp plate positions each part to be installed, and the precision of type frame largely determines aircraft assembly precision, type
The direct decision maker of frame precision is exactly the positioning pin of each part and each locating clamp plate, in view of the importance of the snap-gauge accuracy of manufacture, number
How to ensure that snap-gauge is indeformable, non-warping when control processing, to ensure that the precision of snap-gauge just becomes the difficult point in snap-gauge manufacture.
Snap-gauge digital control processing in the past is processed common ball head knife using type face and is processed, and advantage is to be not required to pincers worker polishing,
Working surface finish can reachThe disadvantage is that must be raised with parallels in pressing plate compressed part when processing, snap-gauge office is formed
Portion is pressurized, and machining deformation power is easy to concentrate, and unclamps pressing plate after processing is completed, and snap-gauge easy tos produce deformation, distortion.
Invention content
The purpose of the present invention is：Using new numerical-control processing method, problem of stress concentration in snap-gauge processing is solved, is reduced
Or avoid deforming after processing, distort, snap-gauge workmanship is improved, ensures type frame tooling overall accuracy
The technical scheme is that：The present invention includes the following steps：
One, manufacturing process is arranged for the characteristic of snap-gauge：
(1) snap-gauge is strip part；
(2) snap-gauge material selection duralumin, hard alumin ium alloy, the material property are：Hardness is relatively high, but machining stress changes greatly,
Machining deformation is larger；
(3) snap-gauge working face is side, and side is fairly simple, and tolerance is minus 0.2 in the machining accuracy of side, and lower tolerance is
Minus 0.4；
(4) this processing method is a large amount of using 20 flat-bottomed cutters of Φ removal snap-gauge, with Φ 20R0.5 fillet flat-bottomed cutter process side types
Face, clamped one time process the holes snap-gauge OTP and other mounting holes；
(5) without using standard cushion block that snap-gauge is padded when clamping, but directly snap-gauge entire surface is ridden over and increases platform
On, uniformly snap-gauge is killed on increasing platform with several pieces of briquettings, it is ensured that warpage does not occur in process for snap-gauge, protects
Flatness after the processing of card plate.
Two, digital control processing characteristic：
1, flat-bottomed cutter carry out type face processing of the selection with certain fillet；
2, using the flat-bottomed cutter processing work type surface side profile with incision function；
Note：A, OTP is object tool point english abbreviations, i.e. target tool point；
B, above each Parameter units are all made of millimeter.
It is an advantage of the invention that：The present invention improves aluminium snap-gauge numerical control (NC) Machining Accuracy, reduces machining deformation, by machining deviation
It is reduced within ± 0.2mm by original ± 0.5mm, finish can reach after hand polish
Description of the drawings
Sectional view when Fig. 1 is the processing of prior art snap-gauge.
Sectional view when Fig. 2 is snap-gauge processing.
Machining sketch chart when Fig. 3 is snap-gauge first time clamping.
Machining sketch chart when Fig. 4 is second of clamping of snap-gauge.
1, increase workbench 2, the flat-bottomed cutter 3 of the prior art, snap-gauge 4, pressing plate 5, clamp nut 6, clamping screw 7,
The flat-bottomed cutter of parallels 8, cushion block 9, the present invention
Specific implementation mode
The present invention is described in further details below.
Specific embodiment is：
(1) snap-gauge is strip part；
(2) snap-gauge material selection duralumin, hard alumin ium alloy, the material property are：Hardness is relatively high, but machining stress changes greatly,
Machining deformation is larger；
(3) snap-gauge working face is side, and side is fairly simple, and tolerance is minus 0.2 in the machining accuracy of side, and lower tolerance is
Minus 0.4；
(4) this processing method is a large amount of using 20 flat-bottomed cutters of Φ removal snap-gauge, with Φ 20R0.5 fillet flat-bottomed cutter process side types
Face, clamped one time process the holes snap-gauge OTP and other mounting holes；
(5) without using standard cushion block that snap-gauge is padded when clamping, but directly snap-gauge entire surface is ridden over and increases platform
On, uniformly snap-gauge is killed on increasing platform with several pieces of briquettings, it is ensured that warpage does not occur in process for snap-gauge, protects
Flatness after the processing of card plate.
Further, the length-width ratio of the snap-gauge is 5：1 or more.
More specific mode is：
(1) blanking of aluminium snap-gauge is mostly used plate blanking, and technical staff first prints 1：1 blank drawing, pincers worker are equal by blank drawing
Digital control processing pressure plate amount is not stayed in even allowance, plasma or gang drill blanking；
(2) high-speed cutting or the good snap-gauge thickness of planing operation ensure the top and bottom depth of parallelism；
(3) first time clamping kills the entire bottom surface of pressing plate in flat surface, selects the flat-bottomed cutter of suitable diameter first, will have
Type face side is gone largely by maximum shape, and reselection has the flat-bottomed cutter of shear blade to use contour strategy, incision step pitch with R0.5 fillets
0.2mm processes type face, and drill bit and reamer after processing is completed, are changed in type face, and drilled and reamed the holes OTP and other mounting holes；
(4) it after processing the above, unclamps pressing plate and alters pressing plate to machined completion side, the machined completion of centering
The holes OTP process outer profile by program；
(5) due to being using the flat-bottomed cutter processing type face with certain fillet, to protect flat surface, therefore snap-gauge mo(u)ld bottom half face
There are a certain amount of residual, such as Fig. 4.After digital control processing, there is obvious knife mark in type face at this time, it is necessary to artificial by pincers worker
Polishing profile, and remnants are removed, complete the manufacture of snap-gauge.
Claims (2)
1. a kind of elongated shape aluminium snap-gauge numerical-control processing method, it is characterised in that：
(1) snap-gauge is strip part；
(2) snap-gauge material selection duralumin, hard alumin ium alloy；
(3) snap-gauge working face is side, and side is fairly simple, and tolerance is negative 0.2mm in the machining accuracy of side, and lower tolerance is negative
0.4mm；
(4) this processing method is a large amount of using Φ 20mm flat-bottomed cutters removal snap-gauge, with Φ 20R0.5mm fillet flat-bottomed cutter process side types
Face, clamped one time process snap-gauge target tool spot hole and other mounting holes；
(5) without using standard cushion block that snap-gauge is padded when clamping, but directly snap-gauge entire surface is ridden over and is increased on platform, it uses
Several pieces of briquettings uniformly kill snap-gauge on increasing platform, it is ensured that warpage does not occur in process for snap-gauge, ensures card
Flatness after plate processing.
2. numerical-control processing method as described in claim 1, it is characterised in that：The length-width ratio of the snap-gauge is 5：1 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652240.XA CN105666040B (en) | 2014-11-17 | 2014-11-17 | A kind of aluminium snap-gauge numerical-control processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652240.XA CN105666040B (en) | 2014-11-17 | 2014-11-17 | A kind of aluminium snap-gauge numerical-control processing method |
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| Publication Number | Publication Date |
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| CN105666040A CN105666040A (en) | 2016-06-15 |
| CN105666040B true CN105666040B (en) | 2018-07-13 |
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| CN201410652240.XA Active CN105666040B (en) | 2014-11-17 | 2014-11-17 | A kind of aluminium snap-gauge numerical-control processing method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631606A (en) * | 2004-12-23 | 2005-06-29 | 蒋和健 | Manufacturing method of male die |
| CN101856843A (en) * | 2010-05-28 | 2010-10-13 | 航天科工哈尔滨风华有限公司 | Mechanical processing device and method of ceramic-based complex curved surface parts with wave transmissivity |
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2014
- 2014-11-17 CN CN201410652240.XA patent/CN105666040B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631606A (en) * | 2004-12-23 | 2005-06-29 | 蒋和健 | Manufacturing method of male die |
| CN101856843A (en) * | 2010-05-28 | 2010-10-13 | 航天科工哈尔滨风华有限公司 | Mechanical processing device and method of ceramic-based complex curved surface parts with wave transmissivity |
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| CN105666040A (en) | 2016-06-15 |
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