CN112571089A - Dot-matrix flexible fixed supporting device for integral spinning hemispherical shell - Google Patents
Dot-matrix flexible fixed supporting device for integral spinning hemispherical shell Download PDFInfo
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- CN112571089A CN112571089A CN202011316307.4A CN202011316307A CN112571089A CN 112571089 A CN112571089 A CN 112571089A CN 202011316307 A CN202011316307 A CN 202011316307A CN 112571089 A CN112571089 A CN 112571089A
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- 238000009987 spinning Methods 0.000 title claims abstract description 38
- 239000011159 matrix material Substances 0.000 title claims description 19
- 238000007667 floating Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 17
- 238000003825 pressing Methods 0.000 abstract description 10
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to the technical field of precision machining of the surface of an integral spinning type hemispherical shell, in particular to an array type flexible fixed supporting device of the integral spinning type hemispherical shell, which comprises a tool base and an array type flexible supporting mechanism, wherein the tool base consists of an upper base flat plate, a lower base flat plate, a plurality of base mould plates and a plurality of connecting rings, all the connecting rings are in a circular structure, the radius of the connecting rings is sequentially reduced from top to bottom, the array type flexible supporting mechanism comprises a plurality of flexible supporting assemblies arranged on all the connecting rings, all the flexible supporting assemblies point to the spherical center of the integral type hemispherical shell, an integral flexible positioning supporting system formed by a plurality of groups of array type hydraulic floating supporting cylinders of the invention is matched with a pressing mechanism of an inner surface machining tool to fixedly press a blank of the integral spinning type hemispherical shell to the supporting mechanism so as to ensure the machining precision of the product, the clamping efficiency and reliability of the integral spinning type hemispherical shell product inner forming machine are improved.
Description
Technical Field
The invention relates to the technical field of precision machining of the overall spinning type hemispherical shell surface, in particular to a dot-matrix flexible fixed supporting device of an overall spinning type hemispherical shell.
Background
The current integral spinning forming type hemispherical shell end socket is increasingly widely applied in the fields of pressure vessels, aerospace and the like, and has obvious advantages. Particularly in the field of aerospace, the medium-large diameter hemispherical shell end socket usually adopts a manufacturing mode of part split forming and integral tailor welding, and has a series of problems of more welding lines, more intermediate processing procedures, long flow, low integral manufacturing efficiency, lack of interchangeability and the like.
In order to meet the requirements of final wall thickness and relevant dimension specified by design, the end socket of the quasi-hemispherical shell is spun and formed, and then the internal and external machining allowance is removed after the internal and external surfaces are machined, so that a final finished product is obtained, wherein the machining process is shown in figure 3.
According to the overall process flow, firstly turning the inner molded surface of a product of a head blank of a certain type of semi-spherical shell, clamping the spinning blank in a bowl shape to an integral turning tool of the inner molded surface, turning the inner shape according to a theoretical equation after adjustment, processing internal allowance, detecting the wall thickness and diameter equivalence, and carrying out next-step exterior processing after the detection is qualified.
Before the inner profile is machined, the outer profile of a product needs to be fixedly supported to resist cutting load and ensure the machining precision of the inner profile.
The special tool for processing the hemispherical shell with the published application number of CN201922438223.7 comprises a supporting frame and a supporting plate; the supporting plate is arranged at the top of the supporting frame, the space surrounded by the supporting plate and the supporting frame is used for containing the hemispherical shell, the end part of the shell can be clamped, the shell is integrally supported, but the middle section of the shell has no supporting force, so that the difficulty is increased for shell processing, the local supporting is realized, and the problem of the fixed supporting requirement of product processing cannot be solved.
Disclosure of Invention
The invention aims to provide a dot-matrix flexible fixing and supporting device of an integral spinning hemispherical shell, aiming at the defects of the prior art.
In order to solve the above problems, the present invention provides the following technical solutions:
the utility model provides a flexible fixed support means of whole spinning type hemisphere casing dot matrix, is including fixture base and the flexible supporting mechanism of dot matrix, fixture base is dull and stereotyped, a plurality of base template and a plurality of go-between are constituteed under by base upper flat plate, base, all the equal level of go-between sets up and all erects on the base between dull and stereotyped and base through the base template, and all go-between top-down interval arrangement, all go-between be with the product profile skew equidistance profile of certain distance, structure and radius top-down reduce in proper order, the flexible supporting mechanism of dot matrix installs the flexible supporting component on all go-between including a plurality of, the sphere center of all directional type hemisphere casings of flexible supporting component.
Furthermore, the flexible supporting assembly comprises hydraulic floating supporting cylinders and mounting seats, a plurality of threaded holes are formed in the connecting rings and are arranged around the center lines of the connecting rings in an equal angle difference mode, the mounting seats are fixedly connected with the corresponding connecting rings through bolts, and the jacking directions of the hydraulic floating supporting cylinders all point to the sphere centers of the quasi-hemispherical shells.
Further, all the inboard and the outside of go-between are the sphere and the opening up, all the inboard and the outside of go-between are the common centre of sphere, all the inboard profile of go-between is the equidistance profile that offsets certain distance with the product profile, all the profile in the go-between outside is the equidistance surface of the inboard profile of go-between.
Further, all the base template is the equal vertical setting in place plane and with the central line coplane of go-between, the base template is right angled triangle structure and its long limit orientation go-between, the long limit of base template is circular-arcly, and all connections encircle the equal angular difference distribution of radian direction on the long limit of base template.
Furthermore, a bottom pressing plate assembly is arranged at the center of the connecting ring at the lowest position and comprises a vertical seat arranged at the center of the bottom of the groove, a bottom pressing plate is arranged on the vertical seat in a threaded mode, a pressing screw rod is vertically arranged at the center of the vertical seat, the bottom pressing plate is sleeved on the pressing screw rod, and a nut is arranged above the pressing screw rod and located in a threaded mode.
Furthermore, a fixed seat is arranged at the top end of the base shaping plate.
Furthermore, the output end of the hydraulic floating support cylinder is slidably provided with a mandril, an output shaft of the hydraulic floating support cylinder is provided with an accommodating groove for accommodating the mandril along the axis of the output shaft, and a buffer spring is arranged between the mandril and the output shaft of the hydraulic floating support cylinder in the accommodating groove.
Has the advantages that: the lattice type flexible fixed supporting device for the integral spinning hemispherical shell has the following beneficial effects:
one is as follows: the lattice type flexible supporting mechanism of the integral spinning semi-spherical shell product adopts a plurality of groups of hydraulic floating supporting cylinders to be distributed on a tool base of an inner face machine machining tool, so as to form an outer appearance surface enveloping lattice support of a blank piece of the integral spinning product;
the second step is as follows: the hydraulic floating support cylinder adopts a spring-pushing type support cylinder, a piston is lifted by a spring, after the piston is pressed down by the weight of a workpiece, a gap between the piston and the workpiece is eliminated, the piston is reliably contacted with the molded surface of a product, and the piston is hydraulically locked by the support cylinder, so that a fixed support is formed;
and thirdly: the invention adopts a profiling design layout, an integral flexible positioning support system formed by a plurality of groups of dot-matrix hydraulic floating support cylinders is matched with a pressing mechanism of an inner profile machining tool to fixedly press an integral spinning semi-spherical shell product blank onto the support mechanism, and when the allowance of the inner profile of the semi-spherical shell product blank is machined, the blank is kept fixed under the action of turning load, so that the machining precision of the product is ensured.
Fourthly, the method comprises the following steps: the invention adopts a dot-matrix hydraulic floating support cylinder system, flexibly and floatingly adjusts and supports the outer profile surface of a product, and the system can quickly and efficiently fix and clamp the product after pressure maintaining; the clamping efficiency and reliability of the internal forming machine of the integral spinning type hemispherical shell product are improved, and integral high-efficiency high-quality processing and manufacturing of the integral spinning type hemispherical shell product are realized.
Drawings
FIG. 1 is a first schematic structural view of a head of a quasi-hemispherical shell;
FIG. 2 is a schematic structural diagram II of the head of the quasi-hemispherical shell;
FIG. 3 is a schematic view of a processing flow of the head of the quasi-hemispherical shell;
FIG. 4 is a longitudinal section of the present invention;
FIG. 5 is a schematic perspective view of a tooling base according to the present invention;
FIG. 6 is a schematic structural view of the flexible support assembly, mounting base and hydraulic floating support cylinder of the present invention;
FIG. 7 is a schematic structural view of the hydraulic floating support cylinder, the carrier rod and the buffer spring of the present invention;
description of reference numerals:
the tooling base 1, dull and stereotyped 11 on the base, dull and stereotyped 12 under the base, base template 13, go-between 14, dot matrix flexible support mechanism 2, buffer spring 21, hydraulic pressure floating support cylinder 22, mount pad 23, ejector pin 24, founding 31, compress tightly lead screw 32, bottom clamp plate 33, fixing base 4.
Detailed Description
The following detailed description of specific embodiments of the present invention is made with reference to the accompanying drawings and examples:
referring to fig. 4 to 7, shown flexible fixed support means of whole spinning type hemisphere casing dot matrix, including fixture base 1 and dot matrix flexible supporting mechanism 2, fixture base 1 comprises dull and stereotyped 11 on the base, dull and stereotyped 12 under the base, a plurality of base template 13 and a plurality of go-between 14, all the even level setting of go-between 14 just all erects between dull and stereotyped 11 and base under dull and stereotyped 12 on the base through base template 13, and all go-between 14 top-down interval arrangements, all go-between 14 are circular structure and radius top-down reduce in proper order, dot matrix flexible supporting mechanism 2 is including the flexible supporting component that a plurality of installed on all go-between 14, and all flexible supporting components are all to the centre of sphere of type hemisphere casing.
The blank piece of the integral spinning semi-spherical shell product is clamped to an inner profile integral turning tool in a bowl shape, N groups of hydraulic floating supporting cylinders 22 are designed on the tool base 1, 1 group of hydraulic floating supporting cylinders 22 are installed on each group of hole sites, and the hydraulic floating supporting cylinders 22 are spring-driven supporting cylinders to form a dot matrix type flexible positioning supporting system.
Tooling base 1 is a whole set of tooling basis spare, for welded structure spare, abundant ageing treatment behind the integral welding, carry out ageing treatment once more after the rough machining, fully release welding and rough machining stress, carry out the finish machining at last, guarantee the required precision and the dimensional stability of tooling basis spare, the base is dull and stereotyped 11 on the base, dull and stereotyped 12 under the base, base template 13 and hydraulic pressure float and support jar 22 go-between 14 and constitute, design lightening hole under tooling base 1 on dull and stereotyped and the base template 13, lighten frock weight under the circumstances of guaranteeing the whole rigidity of frock.
The flexible supporting assembly comprises hydraulic floating supporting cylinders 22 and mounting seats 23, a plurality of threaded holes are formed in the connecting rings 14 in an equal angle difference mode around the center lines of the connecting rings, the mounting seats 23 are fixedly connected with the corresponding connecting rings 14 through bolts, and the jacking directions of the hydraulic floating supporting cylinders 22 all point to the sphere centers of the quasi-hemispherical shells.
The N groups of hydraulic floating supporting cylinders 22 form a supporting and positioning mechanism which is consistent with the spinning outer surface of a semi-spherical shell-like product blank, the supporting and positioning mechanism is used as a positioning tire surface when a product is clamped, the product is attached to a tire through a pressing unit on an inner molding surface machining device during product machining, and the requirement on the machining precision of the inner molding surface is met. The spinning outer molded surface of the spinning bottom blank is a rough positioning surface, the shape and position size errors among different parts reach 3-5 mm, and a fixed type tire cannot be used, so that a floating type supporting cylinder is selected to form a flexible positioning tire body, and the left and right adjustment amount of 10mm is achieved.
The inner sides and the outer sides of all the connecting rings 14 are spherical surfaces, the openings of the inner sides and the outer sides of all the connecting rings 14 are upward, the inner sides and the outer sides of all the connecting rings 14 share a spherical center, the spherical radii of the inner sides of all the connecting rings 14 are the same, and the spherical radii of the outer sides of all the connecting rings 14 are the same, so that the accuracy that the N groups of hydraulic floating support cylinders 22 point to the spherical center of a semi-spherical shell-like product blank after being installed is.
All base template 13's the equal vertical setting in place plane and with go-between 14 central line coplane, base template 13 is the right angled triangle structure and its long limit towards go-between 14, the long limit of base template 13 is circular-arcly, and all go-between 14 distribute around the equal angular difference of radian direction on the long limit of base template 13, and base template 13 uniform layout, the above-mentioned welding hydraulic pressure go-between 14 that floats, and the installation is totally N group's hydraulic pressure floating support jar 22 on the go-between 14.
The center of the connecting ring 14 positioned at the lowest part is provided with a bottom pressure plate assembly, the bottom pressure plate assembly comprises a vertical seat 31 arranged at the center of the bottom of the groove, a bottom pressure plate 33 is arranged on the vertical seat 31 in a threaded manner, a compression screw rod 32 is vertically arranged at the center of the vertical seat 31, the bottom pressure plate 33 is sleeved on the compression screw rod 32, and a nut is arranged above the compression screw rod 32 and positioned on the bottom pressure plate 33 in a threaded manner.
The hydraulic support cylinder that the top of founding seat 31 is provided with the vertical up of a plurality of, the vertical compressing screw 32 of installing in center of founding seat 31, bottom clamp plate 33 cup joints on compressing screw 32, compressing screw 32 is located bottom clamp plate 33 and directly over the screw thread install the nut.
The top of the spinning seal head blank is provided with a central fabrication hole, and when an inner profile is machined, the product is inverted in a bowl shape, so that the central fabrication hole is arranged at the lowest part and is close to the bottom of the inner profile tool base 1, and a nut on the compression screw rod 32 is rotated, so that the bottom pressure plate 33 is pressed downwards. And (3) compressing the spinning seal head blank, applying downward pressure from the center of the product to enable the product to be attached to the tool base 1, and enabling the product and the tool base 1 not to move mutually in the machining process.
A plurality of the top end of the base template 13 is provided with a fixed seat 4, which is convenient for fixing and installing some devices for assisting in processing products.
The output end of the hydraulic floating support cylinder 22 is slidably provided with a mandril 24, the output shaft of the hydraulic floating support cylinder 22 is provided with an accommodating groove for accommodating the mandril 24 along the axis of the output shaft, and a buffer spring 21 is arranged between the mandril 24 and the output shaft of the hydraulic floating support cylinder 22 in the accommodating groove.
Each group of supporting points adopts a spring-pushing type supporting cylinder, a piston is lifted by a spring, after the piston is pressed down by the weight of a workpiece, a gap between the piston and the workpiece is eliminated, the piston is reliably contacted with the molded surface of a product, and the supporting cylinder hydraulically locks the piston, so that a fixed support is formed.
The technical implementation route of the dot matrix type fixed supporting device for the integral spinning type hemispherical shell product is as follows:
the use requirement is as follows: the outer surface of the workpiece of the integral spinning type hemispherical shell product is turned, and internal support is lacked;
the solution scheme is as follows: a spring-pushing type floating support cylinder is added in the turning tool for the integral spinning type hemispherical shell product, and a pressure maintaining system is used for power supply;
principle (iii): aiming at the fact that the processed object is a large thin-wall shell part, the hydraulic floating supporting cylinder 22 is a spring-pushing type floating supporting cylinder which is suitable for supporting the thin-wall part, a spring-pressing type jacking head is adopted, the gap between the hydraulic floating supporting cylinder and the workpiece is eliminated, and the hydraulic floating supporting cylinder is reliably contacted with the molded surface of the product. Each supporting point adopts a spring-pushing type supporting cylinder, a piston is lifted by a spring, and after the piston is pressed down by the weight of a workpiece, the supporting cylinder hydraulically locks the piston, so that a fixed support is formed.
Fourthly, the stroke of the floating support cylinder is 12.5mm, the maximum support force can reach 33.4KN, and the spring contact force is 49-71N;
fifthly, the integral spinning storage tank bottom dot matrix type fixed supporting device adopts a profile design layout, the stroke of the spring-pushing type supporting cylinder exceeds the maximum deviation size of the batch spinning tank bottom, the single-cylinder supporting force can reach 33.4KN after hydraulic locking, and an integral flexible positioning supporting system formed by a plurality of groups of dot matrix type supporting cylinders completely meets the requirements of the integral spinning bottom blank bowl-shaped clamping positioning supporting process;
and sixthly, selecting a hydraulic pressure maintaining system for the tool, equipping a manual stop valve separator and an energy accumulator, connecting through a quick connector, and providing hydraulic locking power supply for the dot matrix type fixed supporting device.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (7)
1. The utility model provides a flexible fixed support means of whole spinning type hemisphere casing dot matrix which characterized in that: including fixture base (1) and lattice type flexible support mechanism (2), fixture base (1) comprises dull and stereotyped (11), dull and stereotyped (12) under the base, a plurality of base template (13) and a plurality of go-between (14), all go-between (14) all set up according to product outline equation skew certain distance and all erect on the base under dull and stereotyped (11) and the base between dull and stereotyped (12), all go-between (14) top-down interval arrangement, all go-between (14) reduce for circular structure and radius top-down in proper order, with product outline equidistance, lattice type flexible support mechanism (2) is including the flexible supporting component that a plurality of installed on all go-between (14), and all flexible supporting components all point to the centre of sphere of the hemisphere shell body.
2. The lattice type flexible fixing and supporting device of the integral spinning hemispherical shell as claimed in claim 1, wherein: the flexible supporting assembly comprises hydraulic floating supporting cylinders (22) and mounting seats (23), wherein a plurality of threaded holes are formed in the connecting rings (14) in an equal angle difference mode around the center lines of the connecting rings, the mounting seats (23) are fixedly connected with the corresponding connecting rings (14) through bolts, and the jacking directions of the hydraulic floating supporting cylinders (22) point to the centers of the semi-spherical shells.
3. The lattice type flexible fixing and supporting device of the integral spinning hemispherical shell as claimed in claim 1, wherein: the inner sides and the outer sides of the connecting rings (14) are similar to a product, the openings of the inner sides and the outer sides of the connecting rings are upward, the inner profiles of the connecting rings are similar to hemispheres which have a certain offset distance with the outer profile equation of the processed product, and the outer profiles of the connecting rings and the inner profiles are equidistant offset planes.
4. The lattice type flexible fixing and supporting device of the integral spinning hemispherical shell as claimed in claim 2, wherein: all the base template (13) is located the equal vertical setting in plane and with the central line coplane of go-between (14), base template (13) are right angled triangle structure and its long limit towards go-between (14), the long limit of base template (13) is circular-arcly, and all go-between (14) distribute around the angular difference such as the radian direction on the long limit of base template (13).
5. The lattice type flexible fixing and supporting device of the integral spinning hemispherical shell as claimed in claim 1, wherein: be in the below go up the go-between (14) center is provided with bottom clamp plate subassembly, bottom clamp plate subassembly is including founding seat (31) at recess bottom center, it installs bottom clamp plate (33) to found the seat (31) upper thread, the vertical center of founding seat (31) is installed and is compressed tightly lead screw (32), bottom clamp plate (33) cup joint on compressing tightly lead screw (32), compress tightly lead screw (32) and be located bottom clamp plate (33) directly over the screw install the nut.
6. The lattice type flexible fixing and supporting device of the integral spinning hemispherical shell as claimed in claim 1, wherein: the top ends of the base shaping plates (13) are provided with fixing seats (4).
7. The lattice type flexible fixing and supporting device of the integral spinning hemispherical shell as claimed in claim 2, wherein: the output end slidable mounting of hydraulic pressure floating support jar (22) has ejector pin (24), the output shaft of hydraulic pressure floating support jar (22) is provided with the holding tank that is used for holding ejector pin (24) along self axis, it is provided with buffer spring (21) to lie in between the output shaft of ejector pin (24) and hydraulic pressure floating support jar (22) in the holding tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316307.4A CN112571089A (en) | 2020-11-19 | 2020-11-19 | Dot-matrix flexible fixed supporting device for integral spinning hemispherical shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316307.4A CN112571089A (en) | 2020-11-19 | 2020-11-19 | Dot-matrix flexible fixed supporting device for integral spinning hemispherical shell |
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| CN202011316307.4A Pending CN112571089A (en) | 2020-11-19 | 2020-11-19 | Dot-matrix flexible fixed supporting device for integral spinning hemispherical shell |
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Cited By (5)
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| CN113695937A (en) * | 2021-09-10 | 2021-11-26 | 哈尔滨工业大学 | Vacuum adsorption clamp and adsorption method for clamping thin-wall spherical shell type micro component |
| CN113695646A (en) * | 2021-09-10 | 2021-11-26 | 哈尔滨工业大学 | Machining device for full-surface micro-pit structure of thin-wall spherical shell type micro component |
| CN113695936A (en) * | 2021-09-10 | 2021-11-26 | 哈尔滨工业大学 | Secondary clamping process method for thin-wall spherical shell type micro component |
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| CN113998323A (en) * | 2021-11-01 | 2022-02-01 | 上海锅炉厂有限公司 | Outer cylinder structure, inner support mounting device thereof and manufacturing process method |
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| CN113695937B (en) * | 2021-09-10 | 2022-06-21 | 哈尔滨工业大学 | Vacuum adsorption clamp and adsorption method for clamping thin-wall spherical shell type micro component |
| CN113695936B (en) * | 2021-09-10 | 2022-06-21 | 哈尔滨工业大学 | Secondary clamping process method for thin-wall spherical shell type micro component |
| CN113998323A (en) * | 2021-11-01 | 2022-02-01 | 上海锅炉厂有限公司 | Outer cylinder structure, inner support mounting device thereof and manufacturing process method |
| CN113998323B (en) * | 2021-11-01 | 2022-11-25 | 上海锅炉厂有限公司 | Outer cylinder structure, inner support mounting device thereof and manufacturing process method |
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