CN105880937A - Machining method for large double-layer thin-walled D-shaped section vacuum chamber fan-shaped section end face - Google Patents
Machining method for large double-layer thin-walled D-shaped section vacuum chamber fan-shaped section end face Download PDFInfo
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- CN105880937A CN105880937A CN201510716822.4A CN201510716822A CN105880937A CN 105880937 A CN105880937 A CN 105880937A CN 201510716822 A CN201510716822 A CN 201510716822A CN 105880937 A CN105880937 A CN 105880937A
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention belongs to the technical field of nickel base alloy double-layer thin-walled structural component machining, and particularly relates to a machining method for a large double-layer thin-walled D-shaped section vacuum chamber fan-shaped section end face. According to the machining method, firstly, a tool is adopted for positioning, the forming error of high-strength alloy panels is effectively avoided, and rigidity is increased through an inner supporting tool; and a circle of waist line is drawn through a platform, and the size error of all spliced sections of a D-shaped section is solved. The influence of the outer arc forming error of the D-shaped section on the 18-degree section is solved through machine tool line drawing. A mold is fixed, a workpiece is positioned and clamped, a base plate is adopted for a force exerting point, and therefore a positioning contact face during machining is enlarged; and meanwhile, a stainless steel plate of a similar shape is manufactured on the positioning contact face to be cushioned at the force exerting point, the contact area is enlarged, and deformation of the product is reduced to the maximum extent. Due to the adoption of the method, the problems that double-layer thin-walled pieces are twisted and folded after being machined, the end face flatness is quite poor and metal fillings fall into interlayer runners can be well solved.
Description
Technical field
The invention belongs to nickel-base alloy double-layer thin wall structural member Machining Technology field, be specifically related to a kind of big
Type double-layer thin wall D type cross section vacuum chamber fan-shaped section end-face processing method.
Background technology
Large-scale double-layer thin wall D type cross section vacuum chamber fan-shaped section is for manufacturing the master in Magnetic-confinement thermonuclear fusion device
Body component vacuum chamber, according to domestic and international thermonuclear fusion present Research, Novel vacuum chamber is made up of 20 D-shaped sections altogether,
Each D type section is space bilayer hyperboloid thin-wall construction, inner casing, runner channel-section steel and shell are welded.
Add man-hour at large-scale double-layer thin wall D type section, produce after how preventing the processing of nickel-base alloy double-layer thin wall part
Give birth to distortion, fold, end face plane degree is overproof, metal fillings falls into interlayer runner, runner pollutes, magnetic conductivity liter
The problems such as height, are to ensure that the pass of large-scale double-layer thin wall D type cross section 18 ° of end face crudies of vacuum chamber fan-shaped section
Key, is also that current large-scale double-layer thin wall D type cross section process technology is needed badly and solved the technical problem that.
For solving problem above, need badly and formulate detailed machining scheme, design and produce simultaneously inner support frock,
18 ° of processing tools, deeply grind at aspects such as process tool selection, machined parameters setting, anti-metal fillings
Study carefully.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of large-scale double-layer thin wall D type cross section vacuum chamber fan-shaped section
End-face processing method, overproof etc. to produce distortion, fold, end face plane degree after solving the processing of double-layer thin wall part
Problem, it is ensured that D fan-shaped section is manufactured by drawing dimensional accuracy, the accuracy of form and position etc., and then guarantees vacuum chamber
The accuracy of manufacture, meet Magnetic-confinement thermonuclear fusion research use requirement.
In order to realize this purpose, the present invention adopts the technical scheme that:
A kind of large-scale double-layer thin wall D type cross section vacuum chamber fan-shaped section end-face processing method, it is big that this method relates to
Type double-layer thin wall D type cross section vacuum chamber fan-shaped section is for manufacturing the main element in Magnetic-confinement thermonuclear fusion device
Vacuum chamber, vacuum chamber is made up of 20 D type cross section vacuum chamber fan-shaped section altogether, one domain of 20 sections of compositions, often
Individual D type cross section vacuum chamber fan-shaped section is space bilayer hyperboloid thin-wall construction prepared by nickel-base alloy, by interior
Shell, channel-section steel and shell are welded, and the central angle between two end faces is 18 °；Comprise the following steps:
(1) D type cross section vacuum chamber fan-shaped section size is checked；
Inner support tool locating: the D type cross section of D type cross section vacuum chamber fan-shaped section is adjusted by inner support frock
Whole to same size；
By inner support frock, the D type sectional dimension of D type cross section vacuum chamber fan-shaped section is adjusted to internal diameter major axis
A length of 2960mm, a length of 1550mm of short axle；
(2) line:
D type cross section vacuum chamber fan-shaped section is placed on workbench, adjusts D type cross section vacuum chamber fan-shaped section,
Standardized circle stringcourse divides in upper and lower for D type cross section vacuum chamber fan-shaped section, controls whole circle stringcourse in the same plane；
(3) lathe line:
Select XK2735 digital control plane milling and boring machine workbench, place 3 on the table and adjust parallels, wherein
Two adjust parallels and are placed on the straight section end positions of corresponding D type cross section vacuum chamber fan-shaped section, an adjusting pad
Iron is placed on the arc end position that in the vacuum chamber fan-shaped section of corresponding D type cross section, distance straight section is farthest, controls D type
The end face that cross section vacuum chamber fan-shaped section contacts with workbench with workbench in approximately the same plane；
By D type cross section vacuum chamber fan-shaped section lifting to workbench, the stringcourse drawn by step (2) and D type cross section
The straight section centering of vacuum chamber fan-shaped section, the major axis of detection D type cross section vacuum chamber fan-shaped section outline, short axle chi
Very little；
Utilize the rotation programming able to programme of XK2735 digital control plane milling and boring machine, clamping scriber, draw D type cross section true
The processing dimension line of two end faces of empty room fan-shaped section；
(4) fixing mold:
18 ° of inclination angle molds are lain against on XK2735 numerical control gantry mill boring table, utilizes XK2735 number
The rotation programming able to programme of control plane milling and boring machine, 18 ° of inclination angle molds of clamping dial gauge centering on milling head
18 ° of inclined-planes so that it is error is less than 0.05；Centering well after, fix 18 ° of inclination angle molds；
(5) locating clip clamping of workpieces:
Lifting pulls the D type cross section vacuum chamber fan-shaped section of line and is placed on 18 ° of inclination angle molds, D type cross section vacuum
Room fan-shaped section is put in the base portion of 18 ° of inclination angle molds, definition D type cross section vacuum chamber fan-shaped section and 18 °
The end face of inclination angle mold contact is lower surface, and another end face is upper surface；Utilize on 18 ° of inclination angle molds
Internal stop carries out inner position, by the processing dimension line centering D type cross section vacuum chamber fan-shaped section drawn in step (3)
The processing line of upper surface；
Between vacuum chamber fan-shaped section lower surface, D type cross section and 18 ° of inclination angle molds, stainless steel gasket is set, logical
The vacuum chamber fan-shaped section upper surface, THICKNESS CONTROL D type cross section of stainless steel gasket is adjusted on a plane if crossing；
Adjust to same plane, D type cross section vacuum chamber fan-shaped section is clamped；At the point of application during clamping
Position arranges backing plate；
Clamping force passes to the regulation spiral shell on 18 ° of inclination angle molds by the outer clamping seats on 18 ° of inclination angle molds
Post, regulation stud is clamped by the backing plate of point of application position on 18 ° of inclination angle molds；
(6) first end face processing:
XK2735 digital control plane milling and boring machine saw blade knife directly cuts off method along outside the vacuum chamber fan-shaped section of D type cross section
First end face of feed machining D type cross section vacuum chamber fan-shaped section, specifically includes:
(6.1) saw blade knife is used to carry out feed cutting at 100mm outside the vacuum chamber fan-shaped section of D type cross section,
Sawing is carried out along lathe simulation appearance and size after incision D type cross section first end face 50mm of vacuum chamber fan-shaped section；
A diameter of 200mm of saw blade knife, thickness is 4mm, and rotation rotating speed is 15～20r/min, feeding speed be 6～
8mm/min；
(6.2), after sawing completes, use face and side cutter along D type cross section first end face of vacuum chamber fan-shaped section
Walk one week to complete first end face processing at the 50mm of outside；A diameter of 200mm of face and side cutter, thickness is
12mm, rotation rotating speed is 15～20r/min, and feeding speed is 18～20mm/min；
(7) upset D type cross section vacuum chamber fan-shaped section: 180 degree of upset D type cross section vacuum chamber fan-shaped section, will
Contact 18 ° of inclination angle molds after first the end face upset machined, before upset, clear up 18 ° of inclination angle molds
Joint place with D type cross section first end face of vacuum chamber fan-shaped section；Unprocessed D type cross section vacuum chamber is fanned
Shape section the second end face clamps D type cross section vacuum chamber fan-shaped section as to be processed by the method location of step (5)；
(8) second end face processing:
Fan-shaped second end face of D type cross section vacuum chamber is processed by the method for step (6)；
(9) unclamp inner support frock, take out frock, complete the processing of two end faces.
Further, a kind of large-scale double-layer thin wall D type cross section as above vacuum chamber fan-shaped section end face processing
Method, step (1) is checked in the vacuum chamber fan-shaped section size of D type cross section, is cut according to large-scale double-layer thin wall D type
The D type structure of face vacuum chamber fan-shaped section end face, the feature of one domain of 20 sections of compositions, inner support frock is by upper
Part, stud, nut, middle part, right-hand member extension bar, jack, left end extension bar, lower part forms；
Upper part is used for adjusting D font top inside dimension and reaches theoretical size requirement, including symmetrical two
Individual part, each part is formed by three sections: top be radius be the arc section of 890mm, be designated as R890 section；
The left side of R890 section is tangent with straight section, and the right side of R890 section and radius are the arc section inscribe of 1910mm；
Three sections of common connections of each part form the top half of D font；The upper part Breadth Maximum in bottom is
1493mm, peak height is 1020mm, and the top connecting plate become larger by 3 pieces of sizes will be the most right
Two parts claimed are formed by connecting the upper part of inner support frock；
Two pieces, inner side and outer side in 3 pieces of top connecting plates is connected with middle part respectively, and inside upper part connects
Plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged 2 spacing with center line on inside upper part connecting plate
105mm, the through hole of diameter 33mm are connected with middle part；Outer upper connecting plate is 750mmx150mmx20mm
Steel plate, on outer upper connecting plate with center line be symmetrical arranged 3 spacing 192mm, diameter 33mm logical
Kong Yuzhong part connects；
Upper part and middle part use 5 studs to couple between dividing, and there are 4 nuts at the two ends of each stud, point
It is not arranged on the upper plate upper and lower sides of the base plate upper and lower sides of upper part, middle part；
Middle part demultiplexing connects upper and bottom section, and adjusts width by the jack of 10 tons, reaches
Dimensional requirement；Middle part point includes symmetrical two part, and the left side of each part is by 2
700mmx150mmx20mm steel plate and 2 300mmx150mmx20mm steel plates and No. 15 channel-section steels are welded；
Middle partial right side is by 2 700mmx150mmx20mm curved plates and 2 750mmx150mmx20mm steel plates
It is welded with No. 15 channel-section steels；The width maximum of middle part is 1550mm, and peak height is 740mm；
Two symmetrical parts are formed by connecting inner support work by the middle part connecting plate become larger by 3 pieces of sizes
The middle part of dress；
Two pieces, inner side and outer side in 3 pieces of middle part connecting plates is connected with upper and bottom section respectively, inner side
Middle part connecting plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged with center line on middle inside connecting plate
2 spacing 105mm, the through holes of diameter 33mm are connected with upper and bottom section；Outer middle side part connecting plate is
The steel plate of 750mmx150mmx20mm, is symmetrical arranged 3 spacing with center line on middle side part connecting plate outside
192mm, the through hole of diameter 33mm are connected with upper and bottom section；
Right-hand member extension bar and left end extension bar are all a diameter of 57mm, the bar of a length of 420mm；
Jack does not uses a length of 300mm during elongation；
Lower part is used for adjusting D font bottom inside dimension and reaches theory calls, including two symmetrical portions
Point, each part is formed by three sections: bottom be radius be the arc section of 890mm, be designated as R890 section；R890
The left side of section is tangent with straight section, and the right side of R890 section and radius are the arc section inscribe of 1910mm；Each portion
The three sections of common connections divided form the latter half of D fonts；The lower part Breadth Maximum in bottom is 1493mm,
Peak height is 1020mm, and the lower connecting plate become larger by 3 pieces of sizes is by symmetrical two
The lower part of the inner support frock that is partly formed by connecting；
Two pieces, inner side and outer side in 3 pieces of lower connecting plate is connected with middle part respectively, and lower inside connects
Plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged 2 spacing with center line on lower inside connecting plate
105mm, the through hole of diameter 33mm are connected with middle part；Outer lower portion connecting plate is 750mmx150mmx20mm
Steel plate, on outer lower portion connecting plate with center line be symmetrical arranged 3 spacing 192mm, diameter 33mm logical
Kong Yuzhong part connects；
Using 5 studs to couple between middle part and lower part, there are 4 nuts at the two ends of each stud, point
It is not arranged on the upper plate upper and lower sides of the lower plate upper and lower sides of middle part, lower part；
By part and upper part, the nut on 10 studs between middle part and lower part in adjusting, reach
To the internal diameter long axis direction size required；
By adjust in part jack and right-hand member extension bar, left end extension bar, reach the short axle of requirement
Size.
Further, a kind of large-scale double-layer thin wall D type cross section as above vacuum chamber fan-shaped section end face processing
Method, in the fixing mold of step (4), 18 ° of inclination angle molds include backing plate, base, internal stop, outer clamping
Seat；Backing plate is used for reducing pressure, reduces workpiece deformation；The a length of 150mm of backing plate, width is 150mm, thick
Degree is 5mm, and material is stainless steel；Base is used for forming 18 ° of inclination angles and supporting D-shaped section carrying out 18 ° of end faces
Processing；Internal stop is used for workpiece is carried out coarse positioning；Outer clamping seats is used for exerting a force workpiece, and at dress
Folder accurately adjusts.
Further, a kind of large-scale double-layer thin wall D type cross section as above vacuum chamber fan-shaped section end face processing
Method, in step (5) locating clip clamping of workpieces, at vacuum chamber fan-shaped section lower surface, D type cross section and 18 ° of inclination angles
The thickness of the stainless steel gasket arranged between mold is 0.3～0.5mm.
Having the beneficial effects that of technical solution of the present invention: the present invention, by first using tool locating, is prevented effectively from
The forming errors of high-strength alloy sheet material, utilizes the inner support frock to add rigidity；By the standardized circle of platform
Stringcourse, solves each section of scale error of D type section splicing.Lathe line solves the shaping of D type section external arc by mistake
The difference impact on 18 °.Fixing mold, locating clip clamping of workpieces, point of application employing backing plate adds and adds man-hour
Location contact surface, makes the corrosion resistant plate pad of approximate shapes on the contact surface of location simultaneously on the point of application, increases
Large access area, reduces the deformation of product to greatest extent.The method using the present invention, can preferably solve
Certainly produce after the processing of double-layer thin wall part that distortion, fold, end face plane degree be overproof, metal fillings falls into interlayer runner
Etc. problem, can be able to be processed at one time by bilayer inside and outside after positioning compression, and low cost, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is inner support tool structure schematic diagram；
Fig. 2 is connecting portion schematic diagram in inner support frock；
Fig. 3 is 18 ° of inclination angle positioner structure schematic diagrames；
Fig. 4 is internal stop and outer clamping seats schematic diagram in 18 ° of inclination angle molds.
In figure: 1 upper part, part in 2,3 right-hand member extension bars, 4 jack, 5 left end extension bars, 6 times
Part, 7 backing plates, 8 bases, 9 internal stops, 10 outer clamping seats.
Detailed description of the invention
Those skilled in the art understands for convenience, is the present invention further below in conjunction with implementing example
Description.Implementing example is only the illustration to this invention, is not limitation of the invention, implements thing
The step not making in example to illustrate is all prior art, is not described in detail at this.
A kind of large-scale double-layer thin wall D type cross section of present invention vacuum chamber fan-shaped section end-face processing method, this method relates to
And large-scale double-layer thin wall D type cross section vacuum chamber fan-shaped section for manufacturing the master in Magnetic-confinement thermonuclear fusion device
Body component vacuum chamber, vacuum chamber is made up of 20 D type cross section vacuum chamber fan-shaped section altogether, and 20 sections of compositions one are whole
Ring, each D type cross section vacuum chamber fan-shaped section is space bilayer hyperboloid thin-wall construction prepared by nickel-base alloy,
Being welded by inner casing, channel-section steel and shell, the central angle between two end faces is 18 °；It is characterized in that:
Comprise the following steps:
(1) D type cross section vacuum chamber fan-shaped section size is checked；
Inner support tool locating: the D type cross section of D type cross section vacuum chamber fan-shaped section is adjusted by inner support frock
Whole to same size；
By inner support frock, the D type sectional dimension of D type cross section vacuum chamber fan-shaped section is adjusted to internal diameter major axis
A length of 2960mm, a length of 1550mm of short axle；
In the present embodiment, as depicted in figs. 1 and 2, fan according to large-scale double-layer thin wall D type cross section vacuum chamber
The D type structure of shape section end face, the features of one domain of 20 sections of compositions, inner support frock by upper part, stud,
Nut, middle part, right-hand member extension bar, jack, left end extension bar, lower part forms；
Upper part is used for adjusting D font top inside dimension and reaches theoretical size requirement, including symmetrical two
Individual part, each part is formed by three sections: top be radius be the arc section of 890mm, be designated as R890 section；
The left side of R890 section is tangent with straight section, and the right side of R890 section and radius are the arc section inscribe of 1910mm；
Three sections of common connections of each part form the top half of D font；The upper part Breadth Maximum in bottom is
1493mm, peak height is 1020mm, and the top connecting plate become larger by 3 pieces of sizes will be the most right
Two parts claimed are formed by connecting the upper part of inner support frock；
Two pieces, inner side and outer side in 3 pieces of top connecting plates is connected with middle part respectively, and inside upper part connects
Plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged 2 spacing with center line on inside upper part connecting plate
105mm, the through hole of diameter 33mm are connected with middle part；Outer upper connecting plate is 750mmx150mmx20mm
Steel plate, on outer upper connecting plate with center line be symmetrical arranged 3 spacing 192mm, diameter 33mm logical
Kong Yuzhong part connects；
Upper part and middle part use 5 studs to couple between dividing, and there are 4 nuts at the two ends of each stud, point
It is not arranged on the upper plate upper and lower sides of the base plate upper and lower sides of upper part, middle part；
Middle part demultiplexing connects upper and bottom section, and adjusts width by the jack of 10 tons, reaches
Dimensional requirement；Middle part point includes symmetrical two part, and the left side of each part is by 2
700mmx150mmx20mm steel plate and 2 300mmx150mmx20mm steel plates and No. 15 channel-section steels are welded；
Middle partial right side is by 2 700mmx150mmx20mm curved plates and 2 750mmx150mmx20mm steel plates
It is welded with No. 15 channel-section steels；The width maximum of middle part is 1550mm, and peak height is 740mm；
Two symmetrical parts are formed by connecting inner support work by the middle part connecting plate become larger by 3 pieces of sizes
The middle part of dress；
Two pieces, inner side and outer side in 3 pieces of middle part connecting plates is connected with upper and bottom section respectively, inner side
Middle part connecting plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged with center line on middle inside connecting plate
2 spacing 105mm, the through holes of diameter 33mm are connected with upper and bottom section；Outer middle side part connecting plate is
The steel plate of 750mmx150mmx20mm, is symmetrical arranged 3 spacing with center line on middle side part connecting plate outside
192mm, the through hole of diameter 33mm are connected with upper and bottom section；
Right-hand member extension bar and left end extension bar are all a diameter of 57mm, the bar of a length of 420mm；
Jack does not uses a length of 300mm during elongation；
Lower part is used for adjusting D font bottom inside dimension and reaches theory calls, including two symmetrical portions
Point, each part is formed by three sections: bottom be radius be the arc section of 890mm, be designated as R890 section；R890
The left side of section is tangent with straight section, and the right side of R890 section and radius are the arc section inscribe of 1910mm；Each portion
The three sections of common connections divided form the latter half of D fonts；The lower part Breadth Maximum in bottom is 1493mm,
Peak height is 1020mm, and the lower connecting plate become larger by 3 pieces of sizes is by symmetrical two
The lower part of the inner support frock that is partly formed by connecting；
Two pieces, inner side and outer side in 3 pieces of lower connecting plate is connected with middle part respectively, and lower inside connects
Plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged 2 spacing with center line on lower inside connecting plate
105mm, the through hole of diameter 33mm are connected with middle part；Outer lower portion connecting plate is 750mmx150mmx20mm
Steel plate, on outer lower portion connecting plate with center line be symmetrical arranged 3 spacing 192mm, diameter 33mm logical
Kong Yuzhong part connects；
Using 5 studs to couple between middle part and lower part, there are 4 nuts at the two ends of each stud, point
It is not arranged on the upper plate upper and lower sides of the lower plate upper and lower sides of middle part, lower part；
By part and upper part, the nut on 10 studs between middle part and lower part in adjusting, reach
To the internal diameter long axis direction size required；
By adjust in part jack and right-hand member extension bar, left end extension bar, reach the short axle of requirement
Size.
(2) line:
D type cross section vacuum chamber fan-shaped section is placed on workbench, adjusts D type cross section vacuum chamber fan-shaped section,
Standardized circle stringcourse divides in upper and lower for D type cross section vacuum chamber fan-shaped section, controls whole circle stringcourse in the same plane；
(3) lathe line:
Select XK2735 digital control plane milling and boring machine workbench, because vacuum chamber fan-shaped 18 ° of sections in D type cross section are one
Individual light welding structure part, deformation certainly exists, and in order to ensure precision, determines face principle according to 3, in work
Placing 3 in station and adjust parallels, two of which adjusts parallels and is placed on corresponding D type cross section vacuum chamber sector
The straight section end positions of section, one adjusts parallels to be placed on distance in the vacuum chamber fan-shaped section of corresponding D type cross section straight
The farthest arc end position of section, control end face that D type cross section vacuum chamber fan-shaped section contacts with workbench with work
Station is in approximately the same plane；
By D type cross section vacuum chamber fan-shaped section lifting to workbench, the stringcourse drawn by step (2) and D type cross section
The straight section centering of vacuum chamber fan-shaped section, the major axis of detection D type cross section vacuum chamber fan-shaped section outline, short axle chi
Very little；
(ROT RPL=9 °, in current plane to utilize the rotation able to programme of XK2735 digital control plane milling and boring machine
Middle rotation G17 to G19, single program section) programming, clamping scriber, draw D type cross section vacuum chamber fan-shaped section
The processing dimension line of two end faces, specifically pincers worker coordinates the 9 ° of processing dimension lines drawing upper surface one circle；Connect
The 9 ° of processing dimension lines drawing lower surface one circle again, this is special to utilize Digit Control Machine Tool can carry out oblique line interpolation
Property, reduce the impact on 18 ° ± 0.03 ° of the circular arc molding error.
(4) fixing mold:
18 ° of inclination angle molds are lain against on XK2735 numerical control gantry mill boring table, utilizes XK2735 number
Control plane milling and boring machine rotation able to programme (ROT RPL=18 °, in current plane rotate G17 to G19,
Single program section) programming, 18 ° of inclined-planes of 18 ° of inclination angle molds of clamping dial gauge centering on milling head so that it is
Error is less than 0.05；Centering well after, fix 18 ° of inclination angle molds；
In the present embodiment, as shown in Figure 3 and Figure 4,18 ° of inclination angle molds include backing plate, base, interior gear
Block, outer clamping seats；Backing plate is used for reducing pressure, reduces workpiece deformation；The a length of 150mm of backing plate, width is
150mm, thickness is 5mm, and material is stainless steel；Base is used for forming 18 ° of inclination angles and supporting D-shaped section carrying out
18 ° of end face processing；Internal stop is used for workpiece is carried out coarse positioning；Outer clamping seats is used for exerting a force workpiece,
And accurately adjust in clamping.
(5) locating clip clamping of workpieces:
Lifting pulls the D type cross section vacuum chamber fan-shaped section of line and is placed on 18 ° of inclination angle molds, D type cross section vacuum
Room fan-shaped section is put in the base portion of 18 ° of inclination angle molds, definition D type cross section vacuum chamber fan-shaped section and 18 °
The end face of inclination angle mold contact is lower surface, and another end face is upper surface；Utilize on 18 ° of inclination angle molds
Internal stop carries out inner position, by the processing dimension line centering D type cross section vacuum chamber fan-shaped section drawn in step (3)
The processing line of upper surface；
Between vacuum chamber fan-shaped section lower surface, D type cross section and 18 ° of inclination angle molds, stainless steel gasket is set, logical
The vacuum chamber fan-shaped section upper surface, THICKNESS CONTROL D type cross section of stainless steel gasket is adjusted on a plane if crossing；
In the present embodiment, arrange between vacuum chamber fan-shaped section lower surface, D type cross section and 18 ° of inclination angle molds
The thickness of stainless steel gasket be 0.3～0.5mm.
Adjust to same plane, D type cross section vacuum chamber fan-shaped section is clamped；At the point of application during clamping
Position arranges backing plate；
Clamping force passes to the regulation spiral shell on 18 ° of inclination angle molds by the outer clamping seats on 18 ° of inclination angle molds
Post, regulation stud is clamped by the backing plate of point of application position on 18 ° of inclination angle molds；
(6) first end face processing:
XK2735 digital control plane milling and boring machine saw blade knife directly cuts off method along outside the vacuum chamber fan-shaped section of D type cross section
First end face of feed machining D type cross section vacuum chamber fan-shaped section, specifically includes:
(6.1) saw blade knife is used to carry out feed cutting at 100mm outside the vacuum chamber fan-shaped section of D type cross section,
Sawing is carried out along lathe simulation appearance and size after incision D type cross section first end face 50mm of vacuum chamber fan-shaped section；
A diameter of 200mm of saw blade knife, thickness is 4mm, and rotation rotating speed is 15～20r/min, feeding speed be 6～
8mm/min；
(6.2), after sawing completes, use face and side cutter along D type cross section first end face of vacuum chamber fan-shaped section
Walk one week to complete first end face processing at the 50mm of outside；A diameter of 200mm of face and side cutter, thickness is
12mm, rotation rotating speed is 15～20r/min, and feeding speed is 18～20mm/min；
(7) upset D type cross section vacuum chamber fan-shaped section: 180 degree of upset D type cross section vacuum chamber fan-shaped section, will
Contact 18 ° of inclination angle molds after first the end face upset machined, before upset, clear up 18 ° of inclination angle molds
Joint place with D type cross section first end face of vacuum chamber fan-shaped section；Unprocessed D type cross section vacuum chamber is fanned
Shape section the second end face clamps D type cross section vacuum chamber fan-shaped section as to be processed by the method location of step (5)；
(8) second end face processing:
Fan-shaped second end face of D type cross section vacuum chamber is processed by the method for step (6)；
(9) unclamp inner support frock, take out frock, complete the processing of two end faces.
In the present embodiment, by double-layer thin wall D type cross section 18 ° of sections of vacuum chamber fan-shaped section of processing after testing,
The defects such as part is distortionless, fold, end face plane degree 0.1mm, angle 18 ° ± 0.03 °, meet technique
Requirement.
Claims (4)
1. a large-scale double-layer thin wall D type cross section vacuum chamber fan-shaped section end-face processing method, this method relates to
Large-scale double-layer thin wall D type cross section vacuum chamber fan-shaped section is for manufacturing the main part in Magnetic-confinement thermonuclear fusion device
Part vacuum chamber, vacuum chamber is made up of 20 D type cross section vacuum chamber fan-shaped section altogether, one domain of 20 sections of compositions,
Each D type cross section vacuum chamber fan-shaped section is space bilayer hyperboloid thin-wall construction prepared by nickel-base alloy, by
Inner casing, channel-section steel and shell are welded, and the central angle between two end faces is 18 °；It is characterized in that: bag
Include following steps:
(1) D type cross section vacuum chamber fan-shaped section size is checked；
Inner support tool locating: the D type cross section of D type cross section vacuum chamber fan-shaped section is adjusted by inner support frock
Whole to same size；
By inner support frock, the D type sectional dimension of D type cross section vacuum chamber fan-shaped section is adjusted to internal diameter major axis
A length of 2960mm, a length of 1550mm of short axle；
(2) line:
D type cross section vacuum chamber fan-shaped section is placed on workbench, adjusts D type cross section vacuum chamber fan-shaped section,
Standardized circle stringcourse divides in upper and lower for D type cross section vacuum chamber fan-shaped section, controls whole circle stringcourse in the same plane；
(3) lathe line:
Select XK2735 digital control plane milling and boring machine workbench, place 3 on the table and adjust parallels, wherein
Two adjust parallels and are placed on the straight section end positions of corresponding D type cross section vacuum chamber fan-shaped section, an adjusting pad
Iron is placed on the arc end position that in the vacuum chamber fan-shaped section of corresponding D type cross section, distance straight section is farthest, controls D type
The end face that cross section vacuum chamber fan-shaped section contacts with workbench with workbench in approximately the same plane；
By D type cross section vacuum chamber fan-shaped section lifting to workbench, the stringcourse drawn by step (2) and D type cross section
The straight section centering of vacuum chamber fan-shaped section, the major axis of detection D type cross section vacuum chamber fan-shaped section outline, short axle chi
Very little；
Utilize the rotation programming able to programme of XK2735 digital control plane milling and boring machine, clamping scriber, draw D type cross section true
The processing dimension line of two end faces of empty room fan-shaped section；
(4) fixing mold:
18 ° of inclination angle molds are lain against on XK2735 numerical control gantry mill boring table, utilizes XK2735 number
The rotation programming able to programme of control plane milling and boring machine, 18 ° of inclination angle molds of clamping dial gauge centering on milling head
18 ° of inclined-planes so that it is error is less than 0.05；Centering well after, fix 18 ° of inclination angle molds；
(5) locating clip clamping of workpieces:
Lifting pulls the D type cross section vacuum chamber fan-shaped section of line and is placed on 18 ° of inclination angle molds, D type cross section vacuum
Room fan-shaped section is put in the base portion of 18 ° of inclination angle molds, definition D type cross section vacuum chamber fan-shaped section and 18 °
The end face of inclination angle mold contact is lower surface, and another end face is upper surface；Utilize on 18 ° of inclination angle molds
Internal stop carries out inner position, by the processing dimension line centering D type cross section vacuum chamber fan-shaped section drawn in step (3)
The processing line of upper surface；
Between vacuum chamber fan-shaped section lower surface, D type cross section and 18 ° of inclination angle molds, stainless steel gasket is set, logical
The vacuum chamber fan-shaped section upper surface, THICKNESS CONTROL D type cross section of stainless steel gasket is adjusted on a plane if crossing；
Adjust to same plane, D type cross section vacuum chamber fan-shaped section is clamped；At the point of application during clamping
Position arranges backing plate；
Clamping force passes to the regulation spiral shell on 18 ° of inclination angle molds by the outer clamping seats on 18 ° of inclination angle molds
Post, regulation stud is clamped by the backing plate of point of application position on 18 ° of inclination angle molds；
(6) first end face processing:
XK2735 digital control plane milling and boring machine saw blade knife directly cuts off method along outside the vacuum chamber fan-shaped section of D type cross section
First end face of feed machining D type cross section vacuum chamber fan-shaped section, specifically includes:
(6.1) saw blade knife is used to carry out feed cutting at 100mm outside the vacuum chamber fan-shaped section of D type cross section,
Sawing is carried out along lathe simulation appearance and size after incision D type cross section first end face 50mm of vacuum chamber fan-shaped section；
A diameter of 200mm of saw blade knife, thickness is 4mm, and rotation rotating speed is 15～20r/min, feeding speed be 6～
8mm/min；
(6.2), after sawing completes, use face and side cutter along D type cross section first end face of vacuum chamber fan-shaped section
Walk one week to complete first end face processing at the 50mm of outside；A diameter of 200mm of face and side cutter, thickness is
12mm, rotation rotating speed is 15～20r/min, and feeding speed is 18～20mm/min；
(7) upset D type cross section vacuum chamber fan-shaped section: 180 degree of upset D type cross section vacuum chamber fan-shaped section, will
Contact 18 ° of inclination angle molds after first the end face upset machined, before upset, clear up 18 ° of inclination angle molds
Joint place with D type cross section first end face of vacuum chamber fan-shaped section；Unprocessed D type cross section vacuum chamber is fanned
Shape section the second end face clamps D type cross section vacuum chamber fan-shaped section as to be processed by the method location of step (5)；
(8) second end face processing:
Fan-shaped second end face of D type cross section vacuum chamber is processed by the method for step (6)；
(9) unclamp inner support frock, take out frock, complete the processing of two end faces.
A kind of large-scale double-layer thin wall D type cross section the most as claimed in claim 1 vacuum chamber fan-shaped section end face processing
Method, it is characterised in that: step (1) is checked in the vacuum chamber fan-shaped section size of D type cross section, according to large-scale double
The D type structure of layer thin-walled D type cross section vacuum chamber fan-shaped section end face, the feature of one domain of 20 sections of compositions, interior
Supporting tool by upper part, stud, nut, middle part, right-hand member extension bar, jack, left end extension bar,
Lower part forms；
Upper part is used for adjusting D font top inside dimension and reaches theoretical size requirement, including symmetrical two
Individual part, each part is formed by three sections: top be radius be the arc section of 890mm, be designated as R890 section；
The left side of R890 section is tangent with straight section, and the right side of R890 section and radius are the arc section inscribe of 1910mm；
Three sections of common connections of each part form the top half of D font；The upper part Breadth Maximum in bottom is
1493mm, peak height is 1020mm, and the top connecting plate become larger by 3 pieces of sizes will be the most right
Two parts claimed are formed by connecting the upper part of inner support frock；
Two pieces, inner side and outer side in 3 pieces of top connecting plates is connected with middle part respectively, and inside upper part connects
Plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged 2 spacing with center line on inside upper part connecting plate
105mm, the through hole of diameter 33mm are connected with middle part；Outer upper connecting plate is 750mmx150mmx20mm
Steel plate, on outer upper connecting plate with center line be symmetrical arranged 3 spacing 192mm, diameter 33mm logical
Kong Yuzhong part connects；
Upper part and middle part use 5 studs to couple between dividing, and there are 4 nuts at the two ends of each stud, point
It is not arranged on the upper plate upper and lower sides of the base plate upper and lower sides of upper part, middle part；
Middle part demultiplexing connects upper and bottom section, and adjusts width by the jack of 10 tons, reaches
Dimensional requirement；Middle part point includes symmetrical two part, and the left side of each part is by 2
700mmx150mmx20mm steel plate and 2 300mmx150mmx20mm steel plates and No. 15 channel-section steels are welded；
Middle partial right side is by 2 700mmx150mmx20mm curved plates and 2 750mmx150mmx20mm steel plates
It is welded with No. 15 channel-section steels；The width maximum of middle part is 1550mm, and peak height is 740mm；
Two symmetrical parts are formed by connecting inner support work by the middle part connecting plate become larger by 3 pieces of sizes
The middle part of dress；
Two pieces, inner side and outer side in 3 pieces of middle part connecting plates is connected with upper and bottom section respectively, inner side
Middle part connecting plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged with center line on middle inside connecting plate
2 spacing 105mm, the through holes of diameter 33mm are connected with upper and bottom section；Outer middle side part connecting plate is
The steel plate of 750mmx150mmx20mm, is symmetrical arranged 3 spacing with center line on middle side part connecting plate outside
192mm, the through hole of diameter 33mm are connected with upper and bottom section；
Right-hand member extension bar and left end extension bar are all a diameter of 57mm, the bar of a length of 420mm；
Jack does not uses a length of 300mm during elongation；
Lower part is used for adjusting D font bottom inside dimension and reaches theory calls, including two symmetrical portions
Point, each part is formed by three sections: bottom be radius be the arc section of 890mm, be designated as R890 section；R890
The left side of section is tangent with straight section, and the right side of R890 section and radius are the arc section inscribe of 1910mm；Each portion
The three sections of common connections divided form the latter half of D fonts；The lower part Breadth Maximum in bottom is 1493mm,
Peak height is 1020mm, and the lower connecting plate become larger by 3 pieces of sizes is by symmetrical two
The lower part of the inner support frock that is partly formed by connecting；
Two pieces, inner side and outer side in 3 pieces of lower connecting plate is connected with middle part respectively, and lower inside connects
Plate is the steel plate of 300mmx150mmx20mm, is symmetrical arranged 2 spacing with center line on lower inside connecting plate
105mm, the through hole of diameter 33mm are connected with middle part；Outer lower portion connecting plate is 750mmx150mmx20mm
Steel plate, on outer lower portion connecting plate with center line be symmetrical arranged 3 spacing 192mm, diameter 33mm logical
Kong Yuzhong part connects；
Using 5 studs to couple between middle part and lower part, there are 4 nuts at the two ends of each stud, point
It is not arranged on the upper plate upper and lower sides of the lower plate upper and lower sides of middle part, lower part；
By part and upper part, the nut on 10 studs between middle part and lower part in adjusting, reach
To the internal diameter long axis direction size required；
By adjust in part jack and right-hand member extension bar, left end extension bar, reach the short axle of requirement
Size.
A kind of large-scale double-layer thin wall D type cross section the most as claimed in claim 1 vacuum chamber fan-shaped section end face processing
Method, it is characterised in that: in the fixing mold of step (4), 18 ° of inclination angle molds include backing plate, base, interior
Block, outer clamping seats；Backing plate is used for reducing pressure, reduces workpiece deformation；The a length of 150mm of backing plate, width
For 150mm, thickness is 5mm, and material is stainless steel；Base is used for forming 18 ° of inclination angles and support D-shaped section
18 ° of end face processing of row；Internal stop is used for workpiece is carried out coarse positioning；Outer clamping seats is used for executing workpiece
Power, and accurately adjust in clamping.
A kind of large-scale double-layer thin wall D type cross section the most as claimed in claim 1 vacuum chamber fan-shaped section end face processing
Method, it is characterised in that: in step (5) locating clip clamping of workpieces, in vacuum chamber fan-shaped section lower end, D type cross section
The thickness of the stainless steel gasket arranged between face and 18 ° of inclination angle molds is 0.3～0.5mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736268A (en) * | 2016-11-30 | 2017-05-31 | 鞍钢重型机械有限责任公司 | The processing method for cutting box-like 180 ° of arched girders |
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| US4102652A (en) * | 1975-10-01 | 1978-07-25 | Deggendorfer Werft Und Eisenbau Gmbh | Modular construction for a large catalytic reaction apparatus |
| CN102069228A (en) * | 2010-12-28 | 2011-05-25 | 东方电气集团东方汽轮机有限公司 | Milling processing fixture for cylinder clamp ring of large steam turbine and processing method of clamp ring |
| CN102794619A (en) * | 2012-09-13 | 2012-11-28 | 沈阳飞机工业（集团）有限公司 | Machining method of long-narrow tire with embedded block |
| CN104690400A (en) * | 2015-02-12 | 2015-06-10 | 中国科学院等离子体物理研究所 | Method for welding all-position narrow gap in Tokamak vacuum chamber |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102652A (en) * | 1975-10-01 | 1978-07-25 | Deggendorfer Werft Und Eisenbau Gmbh | Modular construction for a large catalytic reaction apparatus |
| CN102069228A (en) * | 2010-12-28 | 2011-05-25 | 东方电气集团东方汽轮机有限公司 | Milling processing fixture for cylinder clamp ring of large steam turbine and processing method of clamp ring |
| CN102794619A (en) * | 2012-09-13 | 2012-11-28 | 沈阳飞机工业（集团）有限公司 | Machining method of long-narrow tire with embedded block |
| CN104690400A (en) * | 2015-02-12 | 2015-06-10 | 中国科学院等离子体物理研究所 | Method for welding all-position narrow gap in Tokamak vacuum chamber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736268A (en) * | 2016-11-30 | 2017-05-31 | 鞍钢重型机械有限责任公司 | The processing method for cutting box-like 180 ° of arched girders |
| CN106736268B (en) * | 2016-11-30 | 2018-08-24 | 鞍钢重型机械有限责任公司 | The processing method for cutting box-like 180 ° of arched girders |
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| CN105880937B (en) | 2017-12-22 |
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Effective date of registration: 20210219 Address after: 710021 Shaanxi province xujiawan Xi'an Weiyang Weibin Street No. 5 Patentee after: XI'AN NUCLEAR EQUIPMENT Co.,Ltd. Patentee after: SOUTHWESTERN INSTITUTE OF PHYSICS Address before: 710021 No.5, Weibin street, xujiawan, Weiyang District, Xi'an City, Shaanxi Province Patentee before: XI'AN NUCLEAR EQUIPMENT Co.,Ltd. |