CN113290402B - Large-scale shell section girdling internal stay device of double-deck formula - Google Patents
Large-scale shell section girdling internal stay device of double-deck formula Download PDFInfo
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- CN113290402B CN113290402B CN202110646756.3A CN202110646756A CN113290402B CN 113290402 B CN113290402 B CN 113290402B CN 202110646756 A CN202110646756 A CN 202110646756A CN 113290402 B CN113290402 B CN 113290402B
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- guide rail
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- base
- arc
- inclined plane
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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
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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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2452—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces
- B23Q17/2471—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces of workpieces
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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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
-
- 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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- 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
- B23Q2703/04—Work clamping means using fluid means or a vacuum
Abstract
The invention discloses a double-layer large-scale shell section circular cutting internal support device which comprises a lower piston ring, a central upright post and an upper piston ring, wherein the central upright post comprises a support pillar, a guide rail sliding block, a ball screw assembly, a switching disc and a motor; one end of the support column is fixedly connected with the lower expansion ring, the upper expansion ring is connected to the adapter plate, and the upper expansion ring moves up and down along the support column; the structure on the opposite side of the upper expanding ring and the lower expanding ring is consistent, and the device comprises a base and a jacking mechanism, wherein the jacking mechanism comprises a first cylinder, a hinge connected to the first cylinder, an inclined plane jacking block connected to the other end of the hinge, and an arc-shaped supporting block arranged on the base, and the inclined plane jacking block is in contact with and separated from the arc-shaped supporting block. The invention has symmetrical structure, is convenient to manufacture and assemble, the arc-shaped supporting blocks are tightly propped by the inclined plane jacking blocks on the normal guide rail and can be finely adjusted by the adjusting screw rods, the reference is uniform, and the roundness is controlled. The upper piston ring is supported by three points of the ball screw and the two pressing blocks, and has higher parallelism relative to the lower piston ring.
Description
Technical Field
The invention relates to the field of machining, in particular to a double-layer large-scale shell section circular cutting internal support device in the field of machining of large-scale storage tank shell sections.
Background
The rocket storage tank is formed by welding a plurality of shell sections, the shell sections need to be subjected to edge cutting and groove machining before welding, and the shell sections belong to a large annular thin-walled weak rigid structure and need to be positioned, braced and fixed by using an internal bracing device.
The existing internal bracing device adopts a combination mode that 12 groups of high-pressure cylinders are directly connected with bracing blocks to realize the bracing of a shell section. Because the shell section is also formed by welding a plurality of wall plates, the stress distribution in each place is not uniform and is not a standard circular ring structure. After the internal bracing device is braced tightly, the stretching amount of the cylinder at the place with large shell section stress is small, the stretching amount of the cylinder at the place with small shell section stress is large, and the integral roundness of the shell section cannot be ensured and is measured to be about 10mm. The existing internal support device adopts a unilateral support mode to drive the upper piston ring to move up and down, so that the parallelism of the upper piston ring and the lower piston ring is poor due to deflection moment, and the measured value is about 30mm.
Disclosure of Invention
The invention aims to design an inner supporting device on the basis of the prior art, so that the tightening and loosening work of annular cutting of a large-scale shell section is realized, and the high roundness and high parallelism capacity of the inner supporting device is realized. The problems of poor inner support roundness, long installation and adjustment time, easy equipment damage and the like in the annular cutting process of the large shell section are solved, the annular cutting processing quality of the large shell section is improved, and the requirement of the annular cutting process of the large shell section is met.
In order to achieve the purpose, the invention adopts the following technical scheme:
a large-scale shell section circular cutting internal stay device of double-deck formula includes: the central upright post comprises a support pillar, a guide rail sliding block and a ball screw assembly which are arranged on the support pillar, a switching disc connected to the guide rail sliding block and the ball screw, and a motor arranged on the support pillar;
one end of the supporting column is fixedly connected with the lower expansion ring, the upper expansion ring is connected to the adapter plate, and the upper expansion ring moves up and down along the supporting column;
the structure on the opposite side of the upper expanding ring and the lower expanding ring is consistent, and the device comprises a base and a jacking mechanism, wherein the jacking mechanism comprises a first cylinder, a hinge connected to the first cylinder, an inclined plane jacking block connected to the other end of the hinge, and an arc-shaped supporting block arranged on the base, and the inclined plane jacking block is in contact with and separated from the arc-shaped supporting block.
In the above technical scheme, a first guide rail is arranged on the base along the normal direction, and the inclined plane top block is arranged on the first guide rail.
In the above technical scheme, two inclined plane ejector blocks are arranged on the first guide rail, the hinge is a Y-shaped hinge, two connecting ends of the hinge are respectively connected with one inclined plane ejector block, and the other end of the hinge is connected with the output end of the first cylinder.
In the above technical scheme, a second guide rail is arranged on the base along the radial direction, and the arc-shaped supporting block is arranged on the second guide rail.
In the above technical scheme, the base is provided with a second cylinder, and the output end of the second cylinder is connected with the arc-shaped supporting block.
In the technical scheme, the base is provided with a plurality of groups of supporting mechanisms which are uniformly distributed on the circumference of the base at equal angles.
In the above technical scheme, an adjusting screw is arranged on the base corresponding to each group of top bracing mechanisms and is connected with the arc bracing block.
In the above technical scheme, a pressing block is fixedly connected to the adapter plate and pressed on the guide rail sliding block.
In the technical scheme, the device comprises two pressing blocks, and the two pressing blocks and the ball screw component are respectively connected with the adapter plate in a three-point supporting mode in different side directions of the supporting column.
In the technical scheme, the upper expanding ring and the lower expanding ring are parallel to each other.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the structure symmetry, be convenient for make and assemble, chassis whole casting, the rigidity is good, and the arc kicking block is pushed up by the inclined plane kicking block on the normal direction guide rail tightly to accessible adjusting screw finely tunes, and the benchmark is unified, and the circularity is controlled. The upper piston ring is supported by three points of the ball screw and the two pressing blocks, and has higher parallelism relative to the lower piston ring. The rolling screw rod realizes adjustable supporting height, is simple and flexible, and improves the processing efficiency.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of upper and lower piston rings;
FIG. 3 is a schematic structural view of the tightening mechanism;
FIG. 4 is a schematic view of a support structure of a lower portion of the tightening mechanism;
FIG. 5 is a schematic structural view of a center pillar;
wherein: the device comprises an upper expanding ring 1, a lower expanding ring 2, a central upright post 3, a support post 3-1, a motor 3-2, a ball screw 3-3, a guide rail slide block 3-4, an adapter plate 3-5, a press block 3-6, a base 4, a support mechanism 5, a first air cylinder 5-1, a Y-shaped hinge 5-2, an inclined plane top block 5-3, an arc-shaped support block 5-4, a first guide rail 5-5, a second guide rail 5-6, a second air cylinder 5-7 and an adjusting screw 5-8.
Detailed Description
All of the features disclosed in this specification, or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
As shown in fig. 1, the double-layer large-scale shell section circular cutting internal support device in the embodiment is composed of an upper expanding ring 1, a lower expanding ring 2 and a central upright post 3, wherein the upper expanding ring 1 and the lower expanding ring 2 adopt similar structures, and as shown in fig. 2, the double-layer large-scale shell section circular cutting internal support device comprises a base 4 and a top support mechanism 5 arranged on the base 4. In this embodiment, 12 sets of jacking mechanisms 5 are respectively arranged on the upper expanding ring 1 and the lower expanding ring 2 and are uniformly distributed on the circumference of the base 4.
As shown in fig. 3 and 4, the top bracing mechanism 5 comprises a first cylinder 5-1, a Y-shaped hinge 5-2, an inclined plane top block 5-3, an arc-shaped bracing block 5-4, a second cylinder 5-7, a first guide rail 5-5, a second guide rail 5-7 and an adjusting screw 5-8. The output end of the first air cylinder 5-1 is connected with one end of the Y-shaped hinge 5-2, and the first air cylinder 5-1 drives the Y-shaped hinge 5-2 to stretch and retract. The other two ends of the Y-shaped hinge 5-2 are respectively connected with an inclined plane top block 5-3, the inclined plane top blocks 5-3 are all arranged on a first guide rail 5-5, the first guide rail 5-5 is arranged along the normal direction of the base 4, and the inclined plane top blocks 5-3 move along the first guide rail 5-5 under the driving of a first air cylinder 5-1. The base 4 is further provided with a second cylinder 5-7 and a radial second guide rail 5-6, the arc-shaped supporting block 5-4 is arranged on the second guide rail 5-6, the arc-shaped supporting block 5-4 is connected with the output end of the second cylinder 5-7, and the arc-shaped supporting block 5-4 moves along the radial second guide rail 5-6 under the action of the second cylinder 5-7.
The action sequence when the piston ring needs to be tightly propped is as follows: firstly, the arc-shaped supporting block 5-4 is driven by the second air cylinder 5-7 to move outwards along the radial second guide rail 5-6 to be close to a product, then the first air cylinder 5-1 is used for inflating, the Y-shaped hinge 5-2 is driven by the extension of the piston rod to move, the Y-shaped hinge 5-2 drives the inclined plane top block 5-3 to move towards two sides along the normal first guide rail 5-5, so that the inclined plane of the inclined plane top block 5-3 is in contact with the inclined plane of the arc-shaped supporting block 5-4, and the arc-shaped supporting block 5-4 is tightly pushed outwards under the action of the inclined wedge surface. After the pushing is tight, the roundness of the arc-shaped supporting block 5-4 is micro-adjusted through an adjusting screw rod 5-8 arranged on the base 4, so that the adjustment of the whole circle is realized. The three-coordinate laser tracker is used for detecting and controlling the roundness of the whole body within 2 mm.
The action sequence when the piston ring needs to be contracted is as follows: the first cylinder 5-1 is used for reversely inflating to work, the piston rod is retracted, the Y-shaped hinge 5-2 is used for driving the inclined plane top block 5-3 to approach to the middle along the normal first guide rail 5-5, the inclined plane of the inclined plane top block 5-3 is separated from the inclined plane of the arc-shaped supporting block 5-4, and the second cylinder 5-7 is used for driving the arc-shaped supporting block 5-4 to be retracted along the radial second guide rail 5-6.
As shown in figure 5, the central upright post 3 consists of a support column 3-1, an adapter plate 3-5, guide rail sliders 3-4, ball screws 3-3 and a motor 3-2, wherein the support column 3-1 is fixedly connected in the middle of a base of the lower piston ring 2 through screws, four pairs of guide rail sliders 3-4 are fixedly installed on two opposite side surfaces of the support column 3-1, the ball screws 3-3 are fixedly connected on a vertical surface of the support column 3-1 and the installation surface of the guide rail sliders 3-4 through screws, and the adapter plate 3-5 is fixedly connected with the four pairs of guide rail sliders through screws and is connected with moving nuts on the ball screws through screws. Driven by a motor 3-2 to move up and down along the guide rail. The upper piston ring 1 is connected to the adapter plate 3-5 through screws, two pressing blocks 3-6 are fixedly connected to the adapter plate 3-5, the pressing blocks 3-6 are pressed on the guide rail sliding blocks 3-4, and the two pressing blocks 3-6 and the ball screw 3-3 are distributed on different side faces of the supporting column to form three-point support for the adapter plate. Therefore, three-point support for the upper piston ring is realized, the parallelism of the upper piston ring relative to the lower piston ring is ensured, and the detection by using the three-coordinate laser tracker can be controlled within 7 mm.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (7)
1. The utility model provides a large-scale shell section girdling internal stay device of double-deck formula which characterized in that includes: the central upright post comprises a support pillar, a guide rail sliding block and a ball screw which are arranged on the support pillar, a switching disc connected to the guide rail sliding block and the ball screw, and a motor arranged on the support pillar;
the structure of the opposite side surfaces of the upper expanding ring and the lower expanding ring is consistent, the upper expanding ring and the lower expanding ring comprise a base and a jacking mechanism, the jacking mechanism comprises a first air cylinder, a hinge connected to the first air cylinder, an inclined plane jacking block connected to the other end of the hinge, and an arc-shaped supporting block arranged on the base, and the inclined plane jacking block and the arc-shaped supporting block are in contact with and separated from each other;
the support column is fixedly connected in the middle of the base plate of the lower piston ring through screws, the four guide rail sliders are fixedly arranged on two opposite side surfaces of the support column, the ball screw is fixedly connected on a vertical surface of the support column, which is mounted with the guide rail sliders, through screws, the adapter plate is fixedly connected with the four guide rail sliders through screws, is connected with the moving nuts on the ball screw through screws, and moves up and down along the guide rails under the driving of the motor;
the upper piston ring is connected to the adapter plate through a screw, a pressing block is fixedly connected to the adapter plate, and the pressing block is pressed on the guide rail sliding block; the two pressing blocks and the ball screw assembly are respectively connected with the adapter plate in a three-point supporting mode in different side face directions of the supporting column, so that three-point supporting of the upper piston ring is achieved, and the parallelism of the upper piston ring relative to the lower piston ring is guaranteed.
2. The double-layer large-scale shell section circular cutting internal supporting device of claim 1, characterized in that: a first guide rail is arranged on the base along the normal direction, and the inclined plane top block is arranged on the first guide rail.
3. The double-layer large-scale shell section circular cutting internal supporting device according to claim 2, characterized in that: two inclined plane kicking blocks have on the first guide rail, and the hinge is Y type hinge, and an inclined plane kicking block is connected respectively to two links of hinge, and the other end of hinge is connected with the output of first cylinder.
4. The double-layer large-scale shell section circular cutting internal supporting device of claim 1, characterized in that: the base is provided with a second guide rail along the radial direction, and the arc-shaped supporting block is arranged on the second guide rail.
5. The double-layer large-scale shell section circular cutting internal supporting device of claim 4, is characterized in that: the base is provided with a second cylinder, and the output end of the second cylinder is connected with the arc-shaped supporting block.
6. The double-layer large-scale shell section circular cutting internal bracing device according to any one of claims 1 to 5, wherein: the base is provided with a plurality of groups of supporting mechanisms which are uniformly distributed on the circumference of the base at equal angles.
7. The double-layer large-scale shell section circular cutting internal supporting device of claim 6, is characterized in that: and an adjusting screw is arranged on the base corresponding to each group of top bracing mechanisms and is connected with the arc-shaped bracing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646756.3A CN113290402B (en) | 2021-06-10 | 2021-06-10 | Large-scale shell section girdling internal stay device of double-deck formula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646756.3A CN113290402B (en) | 2021-06-10 | 2021-06-10 | Large-scale shell section girdling internal stay device of double-deck formula |
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| Publication Number | Publication Date |
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| CN113290402A CN113290402A (en) | 2021-08-24 |
| CN113290402B true CN113290402B (en) | 2023-03-28 |
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| CN104209690B (en) * | 2014-09-03 | 2015-12-02 | 上海交通大学 | For the flexible fixture of the vertical assembling of large-size thin-walled cylinder body component |
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|---|---|---|---|---|
| CN105773040A (en) * | 2016-05-11 | 2016-07-20 | 上海交通大学 | Internal folding/unfolding clamp for annular member |
| CN206316572U (en) * | 2016-10-25 | 2017-07-11 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of support meanss of tin section welding |
| CN212850540U (en) * | 2020-09-24 | 2021-03-30 | 北方魏家峁煤电有限责任公司 | Wireless network bridge equipment for open-air coal mine |
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