CN103551828A - Deformation control method for machining multi-surface thin-walled box parts - Google Patents
Deformation control method for machining multi-surface thin-walled box parts Download PDFInfo
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- CN103551828A CN103551828A CN201310512543.7A CN201310512543A CN103551828A CN 103551828 A CN103551828 A CN 103551828A CN 201310512543 A CN201310512543 A CN 201310512543A CN 103551828 A CN103551828 A CN 103551828A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
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Abstract
The invention provides a deformation control method for machining multi-surface thin-walled box parts. A multi-surface thin-walled box comprises a multi-rib metal framework, an inner metal thin wall and an outer metal thin wall. The deformation control method includes the steps: (1) taking a mounting surface of the box as a bottom surface, and calculating and determining pairwise opposite gravity centers of side edges of the mounting surface in front, back, left and right directions according to the size and the weight of the box; (2) welding an auxiliary process block on each gravity center to serve as a compressing position and a positioning reference in machining; (3) clamping and compressing the box by the aid of a tool by taking the auxiliary process blocks as clamping and compressing positions; (4) roughly machining the overall dimension of the box by taking the auxiliary process blocks as the positioning references; (5) standing the box for more than 12 hours after rough machining, releasing stress and naturally removing deformation of the box; (6) finely machining the box and cutting off all the auxiliary process blocks after fine machining.
Description
Technical field
The present invention relates to the deflection control method of Digit Control Machine Tool to workpiece machining, especially relate to a kind of deflection control method of multiaspect thin-wall box body part processing.
Background technology
Conventional large and medium-sized thin-wall box body series products adds man-hour, and clamping position generally will be compressed on the muscle portion of part, or adopts the mode that increases the direct compressing component of cushion block.For the product of some walls and bottom folder with no pressure position, be difficult to use above method, the deflection that processing compresses to product is difficult to accurate control, therefore adopt prior art to thin-wall box body part difficult processing to realize higher precision.The digital control processing that is particularly the complex (aluminum component edge steel bushing) of aluminium and steel for processing parts is shaped, the more difficult control of deflection.
Summary of the invention
In order to overcome the defect of prior art, the object of this invention is to provide a kind of deflection control method of multiaspect thin-wall box body workpiece processing, the deflection of thin-wall box body in process is dropped to minimum, improve the machining accuracy of multiaspect thin-wall box body.
For achieving the above object, the invention provides a kind of deflection control method of multiaspect thin-wall box body workpiece processing, described multiaspect thin-wall box body has many muscle metallic framework and inside and outside metal thin-wall, it is characterized in that, and described deflection control method comprises the following steps:
(1) take the installed surface of casing is bottom surface, according to box sizes and Mass Calculation and determine side focus point facing each other in the direction of front, rear, left and right of described installed surface;
(2) described in each, on focus point, weld auxiliary process piece as the compression position and the positioning datum that add man-hour;
(3) using described auxiliary process piece as clamping and compress position, adopting frock to carry out clamping and compression to casing;
(4) using described auxiliary process piece as positioning datum, the appearance and size of described casing is carried out to roughing;
(5) after roughing, described casing is standing more than 12 hours, stress is discharged, under nature, remove the deflection of casing;
(6) more described casing is carried out to fine finishining, all auxiliary process pieces of excision after fine finishining completes.
In described step (1), at the side of described installed surface, in front and rear direction and left and right direction, at least determine respectively two pairs of focus points.
Owing to adopting technique scheme, the present invention adopts at the side focus point position of the installed surface of multiaspect thin-wall box body welding auxiliary process piece as compressing position and positioning datum, effectively control deflection, machining accuracy between relative position is effectively controlled, and has improved the precision of multiaspect thin-wall box body part processing.The method is applied on the correlated parts of military project MISSILE LAUNCHING product, makes the machining accuracy of part meet the requirement of its use, the passing rate of processing of part reaches 100% simultaneously.
figure of description
Fig. 1 is for adopting the front view of a kind of thin-wall box body part of the present invention's processing.
Fig. 2 is for adopting the right view of a kind of thin-wall box body part of the present invention's processing.
Fig. 3 is for adopting the stereogram of a kind of thin-wall box body part of the present invention's processing.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Refer to Fig. 1 to Fig. 3, it illustrates a kind of multiaspect thin-wall box body part 1 that adopts deflection control method processing of the present invention.This polyhedron thin-wall box body part 1 has many muscle metallic framework (not shown) and inside and outside aluminium thin-walled, and the both sides, top of this polyhedron thin-wall box body part 1 are also embedded with steel bushing 2, and described deflection control method comprises the following steps:
Step (1): the installed surface 3 of casing of take is bottom surface, according to box sizes and Mass Calculation and determine side focus point facing each other in the direction of front, rear, left and right of described installed surface; Particularly, on fore-and-aft direction, determine two pairs of focus points, on left and right directions, determine two pairs of focus points, altogether determine that 8 focus points compress a little as locating.In the present embodiment, take and determine that bottom surface right edge is example at left focus point and two focus points of right focus point of length direction, refer to Fig. 2, whole aluminium sheet is thick is 1.4cm, do not consider casing mesopore or boss, in right view, do not show that casing whole width size is 110cm, this casing aluminum alloy materials density is 2.8g/cm
3.
The first step calculates right view center of gravity line, supposes that center of gravity line and bottom surface intersection point are X cm to bottom surface left end point distance.According to centre-of-gravity principle, center of gravity line cross section left-hand component weight equals the weight of right-hand component.Computing formula is as follows:
62.6*110*1.4*2.8+103.4*110*1.4*2.8+（X-81.8）*110*1.4*2.8+X*110*1.4*2.8
=129.3*110*1.4*2.8+（150.5-X）*110*1.4*2.8*2，
By calculating X=86.5cm;
Second step calculates left focus point in right view (being that center of gravity line cross section left-hand component is at the focus point of bottom surface side), supposes that left focus point is Y cm to bottom surface left end point distance.According to centre-of-gravity principle, computing formula is as follows: 62.6*110*1.4*2.8+Y/Cos30 ° of * 110*1.4*2.8+Y*110*1.4*2.8
=（86.5-Y）*110*1.4*2.8+（86.5-81.8）*110*1.4*2.8+（103.4-?Y/Cos30°）*110*1.4*2.8
By calculating Y=35.4cm(, round up);
Same principle calculates right focus point in right view.
Step (2): weld auxiliary process piece 4 on focus point as the compression position and the positioning datum that add man-hour described in each.
Step (3): using auxiliary process piece 4 as clamping and compress position, adopting frock to carry out clamping and compression to casing.
Step (4): using auxiliary process piece 4 as positioning datum, the appearance and size of box parts 1 is carried out to roughing.
Step (5): after roughing, box parts 1 is standing more than 12 hours, stress is discharged, under nature, remove the deflection of box parts 1.
Step (6): again box parts 1 is carried out to fine finishining, 8 all auxiliary process pieces 4 of excision after fine finishining completes.
In upper aluminum sheet due to this thin-wall box body part 1, be embedded steel bushing 2, therefore between steel bushing 2 end faces and aluminium sheet thin-walled, should adopt first thick rear thin principle to process, guarantee the dimensional tolerance of inside and outside circle, minimizing repeats processing continuously to the same face, reduce processing and produce fever phenomenon, further deflection is controlled at more among a small circle.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. the deflection control method that multiaspect thin-wall box body part is processed, described multiaspect thin-wall box body has many muscle metallic framework and inside and outside metal thin-wall, it is characterized in that, and described deflection control method comprises the following steps:
(1) take the installed surface of casing is bottom surface, according to box sizes and Mass Calculation and determine side focus point facing each other in the direction of front, rear, left and right of described installed surface;
(2) described in each, on focus point, weld auxiliary process piece as the compression position and the positioning datum that add man-hour;
(3) using described auxiliary process piece as clamping and compress position, adopting frock to carry out clamping and compression to casing;
(4) using described auxiliary process piece as positioning datum, the appearance and size of described casing is carried out to roughing;
(5) after roughing, described casing is standing more than 12 hours, stress is discharged, under nature, remove the deflection of casing;
(6) more described casing is carried out to fine finishining, all auxiliary process pieces of excision after fine finishining completes.
2. the deflection control method of a kind of multiaspect thin-wall box body part processing according to claim 1, is characterized in that: in described step (1), at the side of described installed surface, at least determine respectively two pairs of focus points in front and rear direction and left and right direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310512543.7A CN103551828B (en) | 2013-10-25 | 2013-10-25 | A kind of deformation amount controlling method of multiaspect thin-wall box body part processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310512543.7A CN103551828B (en) | 2013-10-25 | 2013-10-25 | A kind of deformation amount controlling method of multiaspect thin-wall box body part processing |
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| CN103551828A true CN103551828A (en) | 2014-02-05 |
| CN103551828B CN103551828B (en) | 2016-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149887A (en) * | 2015-09-30 | 2015-12-16 | 天津第一机床总厂 | Method for machining large-scale driven box assembly part |
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| US20060265876A1 (en) * | 2003-06-17 | 2006-11-30 | Shizuo Kimura | Wheel rim, wheel, and methods of producing them |
| CN101695792A (en) * | 2009-10-26 | 2010-04-21 | 浙江大地钢结构有限公司 | Welding method of T-shaped steel girder capable of performing transformation control |
| US20100140860A1 (en) * | 2008-12-05 | 2010-06-10 | Gm Global Technology Operations, Inc. | Flexible support assembly for vehicle tooling plates |
| CN101941139A (en) * | 2010-09-02 | 2011-01-12 | 中信重工机械股份有限公司 | Welding and assembling method for huge mining mill barrel |
| CN102145446A (en) * | 2011-04-15 | 2011-08-10 | 南通太平洋海洋工程有限公司 | Deformation control in manufacturing of ultra-high strength steel structure |
| CN102350617A (en) * | 2011-09-08 | 2012-02-15 | 中国航空工业第六一八研究所 | Method for processing high-accuracy easily-deformable U-shaped cantilever structural member |
| CN102513803A (en) * | 2011-12-03 | 2012-06-27 | 西安航空动力股份有限公司 | Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp |
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- 2013-10-25 CN CN201310512543.7A patent/CN103551828B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060265876A1 (en) * | 2003-06-17 | 2006-11-30 | Shizuo Kimura | Wheel rim, wheel, and methods of producing them |
| US20100140860A1 (en) * | 2008-12-05 | 2010-06-10 | Gm Global Technology Operations, Inc. | Flexible support assembly for vehicle tooling plates |
| CN101695792A (en) * | 2009-10-26 | 2010-04-21 | 浙江大地钢结构有限公司 | Welding method of T-shaped steel girder capable of performing transformation control |
| CN101941139A (en) * | 2010-09-02 | 2011-01-12 | 中信重工机械股份有限公司 | Welding and assembling method for huge mining mill barrel |
| CN102145446A (en) * | 2011-04-15 | 2011-08-10 | 南通太平洋海洋工程有限公司 | Deformation control in manufacturing of ultra-high strength steel structure |
| CN102350617A (en) * | 2011-09-08 | 2012-02-15 | 中国航空工业第六一八研究所 | Method for processing high-accuracy easily-deformable U-shaped cantilever structural member |
| CN102513803A (en) * | 2011-12-03 | 2012-06-27 | 西安航空动力股份有限公司 | Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149887A (en) * | 2015-09-30 | 2015-12-16 | 天津第一机床总厂 | Method for machining large-scale driven box assembly part |
| CN105149887B (en) * | 2015-09-30 | 2017-06-20 | 天津第一机床总厂 | The processing method of large-scale driven casing assembly |
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| CN103551828B (en) | 2016-06-29 |
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