CN106624630A - Machining method of ultra-thin and oversized arc-shaped plate - Google Patents

Machining method of ultra-thin and oversized arc-shaped plate Download PDF

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Publication number
CN106624630A
CN106624630A CN201611078423.0A CN201611078423A CN106624630A CN 106624630 A CN106624630 A CN 106624630A CN 201611078423 A CN201611078423 A CN 201611078423A CN 106624630 A CN106624630 A CN 106624630A
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China
Prior art keywords
workpiece
arc
machining
pressing plate
strip pressing
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CN201611078423.0A
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Chinese (zh)
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CN106624630B (en
Inventor
刘永涛
梁斌
王解全
俞荣波
代立君
罗雪梅
崔亚波
王丽
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Angang Heavy Machinery Co Ltd
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Angang Heavy Machinery Co Ltd
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Publication of CN106624630A publication Critical patent/CN106624630A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

Abstract

The invention discloses a machining method of an ultra-thin and oversized arc-shaped plate. The machining method comprises the following steps that firstly, rough machining is conducted through a planning machine; and secondly, finish machining is conducted through a numerical control milling machine. In the machining process of an arc-shaped face, in order to control bulging of a workpiece, a plurality of long strip pressing plates are parallelly pressed on the workpiece, the two ends of the long strip pressing plates are compressed through compressing plates, and fixed inside T-shaped grooves of a square box by pressing plate bolts. A plurality of puller bolts butting against the upper surface of the arc-shaped face are arranged on the long strip pressing plates. According to a numerical control program, middle arc faces of the long strip pressing plates are subjected to finish machining. After finishing, the long strip pressing plates are displaced to the finish machined surfaces to be clamped. The numerical program once more, and the unmachined arc faces are subjected to finish machining again according to the numerical program. In order to control tearing of an ultra-thin edge, a movable pressing plate is pressed on the thin edge of the workpiece in the finish machining process, and displacement is conducted once every time cutting is conducted for one time. In order to control deformation, produced by heat, of the workpiece, cold water is poured to cool the workpiece in machining. The phenomena of production of bulging and thin edge tearing of the workpiece is controlled, and the quality is increased by a large margin.

Description

Ultra-thin, super large arc machining process
Technical field
The present invention relates to mechanical processing technique, particularly ultra-thin, super large arc processing method.
Background technology
At present, domestic when ultra-thin, super large arc is processed, the method typically taken is essentially, with model on planer It is processed.Such processing method, wayward workpiece produces " bulge ", the phenomenon of ultra-thin side tear, it is difficult to will up to drawing Ask.
The content of the invention
The technical problem to be solved is the deficiencies in the prior art, there is provided a kind of more advanced ultra-thin, super large The machining process of arc.
For achieving the above object, the present invention employs the following technical solutions realization:
Ultra-thin, super large arc machining process, described arc plate top surface is cambered surface, and bottom surface is plane, arc Radius is more than 300000mm, and arc most featheredge thickness is less than 0.5mm;Characterized in that, the processing method of the arc:It is first First roughing is carried out on planer;Secondly finished on CNC milling machine, concrete procedure of processing is as follows:
S1:The each face of metal-planing machine roughing arc:
Roughing arcwall face B faces and baseplane A faces are plane on metal-planing machine, first by A faces towards workbench, B faces It is installed to machine tool chief axis, roughing arcwall face, one side stays 3-4mm surpluses, workpiece turning 180 degree, and B faces are towards workbench, A faces face It is installed to machine tool chief axis, roughing A faces, one side stays 12-13mm surpluses, workpiece overturns again 180 degree, A faces are towards workbench, B Face is installed towards machine tool chief axis, and processing B faces, one side stays 1-2mm surpluses, workpiece to overturn 180 degree again, B faces towards workbench, A faces are installed towards machine tool chief axis, and processing A faces, one side stays 7-8mm surpluses;
S2:Heat treatment:The process of workpiece stress-removal;
S3:Vertical numerical control boring and milling machine is finished:
Square chest is put and is fixed on the table, upper plane machining is shown in flat, towards workbench, A faces are towards lathe in workpiece B faces Main shaft is installed, and finishing A faces, processing removal amount is 3-4mm, while, it is ensured that B faces one side has 5-6mm surpluses, workpiece turning 180 °, A faces are installed towards workbench, B faces towards machine tool chief axis, and finishing periphery is found just by periphery again, is then finished to arc Shape face, adopts following methods in arcwall face process:
1) it is control workpiece bulge, is pressed in a plurality of strip pressing plate is parallel on workpiece, the two ends of strip pressing plate is by pressure strip Compress, and be fixed in the T-slot of square chest by follower bolt, strip pressing plate is provided with multiple puller bolts and acts against on arcwall face Surface, by numerical control program, finishes the cambered surface in the middle of strip pressing plate, after the completion of, strip pressing plate is displaced into polished surface Clamping, then finished undressed cambered surface by numerical control program;
2) to control ultra-thin side tear, a mobile pressing plate is pressed at workpiece featheredge in finishing passes, often walks a knife Displacement is once;
3) to control workpiece by thermogenetic deformation, man-hour, cooling down workpiece of throwing cold water on are being added.
Compared with prior art, the invention has the beneficial effects as follows:
Ultra-thin, super large arc machining process, controls workpiece and produces " bulge ", the phenomenon of featheredge tear, matter Amount is increased substantially.
Description of the drawings
Fig. 1 is the structural representation of embodiment.
Fig. 2 is metal-planing machine roughing schematic diagram.
Fig. 3 is vertical numerical control boring and milling machine Working position schematic diagram.
Fig. 4 is that vertical numerical control boring and milling machine processes cambered surface clamping position schematic diagram.
Fig. 5 is that arc processes cambered surface clamping schematic diagram.
Fig. 6 is that arc processes cambered surface clamping diagrammatic side view.
In figure:Pressure strip 1, workpiece 2, strip pressing plate 3, square chest 4, follower bolt 5, puller bolt 6, mobile pressing plate 7.
Specific embodiment
The specific embodiment of the present invention is further illustrated below in conjunction with the accompanying drawings:
Embodiment:
Such as Fig. 1, arc workpiece size is 2580*1300, and arc plate top surface is cambered surface, and bottom surface is plane, the radius of arc For R317576mm, webbing thickness 42mm, featheredge thickness 0.4mm, Fig. 1 is seen.The processing method of arc:It is enterprising in planer first Row roughing;Secondly finished on CNC milling machine, concrete processing method is as follows:
S1:Metal-planing machine roughing:
1) platform marks centering line and length processing line for planer;
2) metal-planing machine first piece arcwall face B faces and baseplane A faces are plane, A faces towards workbench, B faces towards Machine tool chief axis are installed, and see Fig. 2;
3) by line look for it is each just, error be less than 0.2mm;
4) B faces are processed, one side stays 3mm surpluses, and roughness is Ra6.3, and lower step centering benchmark is done certainly, sees bright;
5) workpiece turning 180 degree, B faces are installed towards workbench, A faces towards machine tool chief axis;
6) by being centering benchmark centering, error little Yu 0.05mm certainly;
7) A faces are processed, one side stays 12mm surpluses, and roughness is Ra6.3;
8) workpiece turning 180 degree, A faces are installed towards workbench, B faces towards machine tool chief axis;
9) centering benchmark centering, error little Yu 0.05mm are by machined surface and certainly;
10) roughing B faces, one side stays 1mm surpluses, and roughness is Ra6.3;
11) workpiece turning 180 degree, B faces are installed towards workbench, A faces towards machine tool chief axis;
12) by being centering benchmark centering, error little Yu 0.05mm certainly;
13) roughing A faces, one side stays 7mm surpluses, and roughness is Ra6.3;
S2:Heat treatment:The process of workpiece stress-removal;
S3:Vertical numerical control boring and milling machine is finished:
1) each portion's processing line is drawn again by figure and check blank deformation;
2) finished using digital-control boring-milling machine, square chest is put on the table, fixed, upper plane machining is shown in flat, coarse Angle value is Ra3.2, and flatness error is less than 0.02mm;
3) towards workbench, A faces are installed towards machine tool chief axis, see Fig. 3 in B faces;
4) by line centering, error is less than 0.1mm;
5) A faces are finished, processing removal amount is 3mm, and roughness is Ra6.3, and flatness error is less than 0.02mm, meanwhile, Ensure that B faces one side there are 5mm surpluses, lower step centering benchmark is done certainly;
6) 180 ° of workpiece turning, A faces are installed towards workbench, B faces towards machine tool chief axis;
7) find just by centering benchmark, error is less than 0.05mm;
8) finishing periphery;
9) find just by periphery again, error is less than 0.05mm;
10) it is control workpiece bulge, is pressed in 5 strip pressing plates 3 are parallel on workpiece 2, the two ends of strip pressing plate 3 is by compressing Plate 1 is compressed, and is fixed in the T-slot of square chest 4 by follower bolt 5, and strip pressing plate 3 is provided with multiple puller bolts 6 and acts against B Face upper surface, by numerical control program, finishes the cambered surface in the middle of strip pressing plate 3, after the completion of, strip pressing plate 3 is displaced into finishing The clamping of work surface, then finished undressed cambered surface by numerical control program;
To control ultra-thin side tear, a mobile pressing plate 7 is pressed at workpiece featheredge in finishing passes, often walks knife shifting Position is once;When there is 0.3mm surpluses, cutting data is elected as:The depth of cut (0.05-0.1) mm, revolution S=400r/min, enters To F=350-300mm/min, Fig. 4-Fig. 6 is seen.
11) to control workpiece by thermogenetic deformation, man-hour, cooling down workpiece of throwing cold water on are being added.
Described above is only the general principle of the present invention, and not the present invention is imposed any restrictions, every right according to the present invention It carries out equivalent variations and modification, within the category of the art of this patent protection scheme.

Claims (1)

1. ultra-thin, super large arc machining process, described arc plate top surface is cambered surface, and bottom surface is plane, the half of arc Footpath is more than 300000mm, and arc most featheredge thickness is less than 0.5mm;Characterized in that, the processing method of the arc:First Roughing is carried out on planer;Secondly finished on CNC milling machine, concrete procedure of processing is as follows:
S1:The each face of metal-planing machine roughing arc;
S2:Heat treatment:The process of workpiece stress-removal;
S3:Vertical numerical control boring and milling machine finishes baseplane, upset workpiece finishing periphery and arcwall face, in arcwall face process Middle employing following methods:
1) it is control workpiece bulge, is pressed in a plurality of strip pressing plate is parallel on workpiece, the two ends of strip pressing plate is compressed by pressure strip, And be fixed in the T-slot of square chest by follower bolt, strip pressing plate is provided with multiple puller bolts and acts against arcwall face upper surface, By numerical control program, the cambered surface in the middle of strip pressing plate is finished, after the completion of, strip pressing plate is displaced into polished surface clamping, Again undressed cambered surface is finished by numerical control program;
2) to control ultra-thin side tear, a mobile pressing plate is pressed at workpiece featheredge in finishing passes, often walks knife displacement Once;
3) to control workpiece by thermogenetic deformation, man-hour, cooling down workpiece of throwing cold water on are being added.
CN201611078423.0A 2016-11-30 2016-11-30 Ultra-thin, super large arc panel machining process Active CN106624630B (en)

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Application Number Priority Date Filing Date Title
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CN106624630B CN106624630B (en) 2018-09-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110900121A (en) * 2019-11-04 2020-03-24 潍坊市凯隆机械有限公司 Processing method of static pressure line double-arm sand box
CN112139572A (en) * 2020-08-21 2020-12-29 华翔翔能科技股份有限公司 Planer-milling machine is used in transformer production

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US20040103980A1 (en) * 2002-12-03 2004-06-03 Hunter Douglas Inc. Method and apparatus for fabricating cellular structural panels
CN101670462A (en) * 2009-09-29 2010-03-17 江西洪都航空工业集团有限责任公司 Wall plate processing technology for hyperboloid thin wall
US20100122461A1 (en) * 2008-11-20 2010-05-20 Constantinos Minas Compact spring loaded fuel cell monopolar stack
CN102528501A (en) * 2012-02-18 2012-07-04 沈阳飞机工业(集团)有限公司 Dimension correction device in large double-curved surface plate part processing and method thereof
CN102672482A (en) * 2012-04-28 2012-09-19 苏州市邓尉喷胶棉厂 Fixture for processing arc-shaped grooves
CN202780517U (en) * 2012-06-06 2013-03-13 沈阳飞机工业(集团)有限公司 Large thin-walled workpiece vacuum milling fixture
CN204295313U (en) * 2014-11-24 2015-04-29 杭州天扬机械有限公司 Thin-wall part auxiliary support mechanism
CN105689990A (en) * 2014-11-26 2016-06-22 无锡市欧德机械制造有限公司 Manufacturing method for efficient positioning clamp for column drilling

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040103980A1 (en) * 2002-12-03 2004-06-03 Hunter Douglas Inc. Method and apparatus for fabricating cellular structural panels
US20100122461A1 (en) * 2008-11-20 2010-05-20 Constantinos Minas Compact spring loaded fuel cell monopolar stack
CN101670462A (en) * 2009-09-29 2010-03-17 江西洪都航空工业集团有限责任公司 Wall plate processing technology for hyperboloid thin wall
CN102528501A (en) * 2012-02-18 2012-07-04 沈阳飞机工业(集团)有限公司 Dimension correction device in large double-curved surface plate part processing and method thereof
CN102672482A (en) * 2012-04-28 2012-09-19 苏州市邓尉喷胶棉厂 Fixture for processing arc-shaped grooves
CN202780517U (en) * 2012-06-06 2013-03-13 沈阳飞机工业(集团)有限公司 Large thin-walled workpiece vacuum milling fixture
CN204295313U (en) * 2014-11-24 2015-04-29 杭州天扬机械有限公司 Thin-wall part auxiliary support mechanism
CN105689990A (en) * 2014-11-26 2016-06-22 无锡市欧德机械制造有限公司 Manufacturing method for efficient positioning clamp for column drilling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110900121A (en) * 2019-11-04 2020-03-24 潍坊市凯隆机械有限公司 Processing method of static pressure line double-arm sand box
CN112139572A (en) * 2020-08-21 2020-12-29 华翔翔能科技股份有限公司 Planer-milling machine is used in transformer production

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