CN111822548B - Precise shape control equipment for thin-wall cylinder - Google Patents
Precise shape control equipment for thin-wall cylinder Download PDFInfo
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- CN111822548B CN111822548B CN202010506652.8A CN202010506652A CN111822548B CN 111822548 B CN111822548 B CN 111822548B CN 202010506652 A CN202010506652 A CN 202010506652A CN 111822548 B CN111822548 B CN 111822548B
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- 238000000034 method Methods 0.000 claims abstract description 25
- 238000012937 correction Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 11
- 230000008602 contraction Effects 0.000 claims description 5
- 229910000746 Structural steel Inorganic materials 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 9
- 210000004379 membrane Anatomy 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002219 extraembryonic membrane Anatomy 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a thin-wall cylinder precise shape control device, which comprises a rotary supporting table, a cooling support table and a control table, wherein the rotary supporting table is used for supporting a workpiece in a shape correction process and rotating the workpiece in a cooling shrinkage process; the precise shape control inner tire mold is uniformly distributed around the circle center of the rotary supporting table and is used for providing an arc surface required during shape control and shape correction force conduction during working; the hydraulic pushing cylinder is connected with the precise shape control inner tube mould and used for precisely and precisely controlling the micro-distance movement of the shape control inner tube mould; the guide device is arranged on a piston rod of the hydraulic pushing cylinder and is used for guiding the axial movement of the hydraulic pushing cylinder and positioning the guide direction; the bracket takes the center of the rotary supporting table as the center, is installed on the ground in a ring shape and is used for fixing the hydraulic pushing cylinder and the guide device. The invention is used for precisely controlling the shape of the ultra-large diameter thin-wall cylinder, has high shape control precision, does not thin the wall thickness, has small residual stress after precisely controlling the shape, and can simplify the subsequent procedures. Meanwhile, the taper of the inner tire mold is adjustable, and the inner tire mold is applicable to precise shape control of workpieces such as cone cylinders.
Description
Technical Field
The invention relates to a thin-wall cylinder shape control device, in particular to a precise shape control device for an ultra-large-diameter thin-wall cylinder.
Background
The ultra-large diameter thin-wall cylindrical part is widely applied to the fields of petroleum and petrochemical industry, marine equipment and the like, and the processing mode can be performed by adopting a ring rolling and heat treatment mode. The cylinder part can be irregularly deformed in the cooling process after ring rolling and heat treatment, so that the size of the workpiece can not meet the use requirement. The common correction method for the thin-wall cylinder body comprises the modes of point pressing correction of a press machine, correction of a four-roller rounding machine, expansion correction and the like.
The shape correction methods are mechanical shape correction methods, and can basically meet the requirements on workpieces with small structural size, small deformation degree and low overall precision requirement. However, for ultra-large diameter thin-wall cylindrical parts, because of the principle defects of difficult correction of irregular deformation, reduced wall thickness of the cylindrical parts, new deformation caused by overlarge stress and the like, and difficult manufacture of corresponding processing equipment, the precise shape control of the cylindrical parts is difficult to realize by using the method, and the size and performance requirements of products cannot be met.
Disclosure of Invention
In view of the above, the main object of the present invention is to provide a precise shape control device for ultra-large diameter thin-wall cylinder, which has the remarkable advantages of high shape control precision, no thickness reduction, and small residual stress after precise shape control, and can simplify the subsequent processes. Meanwhile, the taper of the inner tire mold is adjustable, and the inner tire mold is applicable to precise shape control of workpieces such as cone cylinders.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a thin-walled cylinder precision shape control apparatus comprising:
the rotary supporting table is used for supporting the workpiece in the shape correction process and rotating the workpiece in the cooling shrinkage process;
the precise shape control inner tire mold is uniformly distributed around the circle center of the rotary supporting table and is used for providing an arc surface required during shape control and shape correction force conduction during working;
The hydraulic pushing cylinder is connected with the precise shape control inner tube mould and used for precisely and precisely controlling the micro-distance movement of the shape control inner tube mould;
the guide device is arranged on a piston rod of the hydraulic pushing cylinder and is used for guiding the axial movement of the hydraulic pushing cylinder and positioning the guide direction;
the bracket takes the center of the rotary supporting table as the center, is installed on the ground in a ring shape and is used for fixing the hydraulic pushing cylinder and the guide device.
By the above, through the accurate accuse shape inner tube mould micro-distance removal of hydraulic pressure pushing cylinder, utilize the shrink effect in the high temperature work piece cooling process, adopt adjustable circumference inner tube mould, through the accurate accuse shape inner tube mould position restriction thin wall cylindric spare of control specific radian shrink scope, have accuse shape precision height, the wall thickness does not attenuate, the little showing advantage of residual stress after the accurate accuse shape can simplify the follow-up procedure. Meanwhile, the taper of the precise shape-control inner tube mould is adjustable (the push-out distance of the upper inner tube mould and the lower inner tube mould is different, and a cylindrical surface or a taper surface in the vertical direction is realized), so that the precise shape-control inner tube mould is applicable to precise shape control of workpieces such as a taper cylinder.
Optionally, the support adopts truss structure, has a plurality of grids that are used for installing guider and hydraulic pressure pushing cylinder on it, and this grid is followed rotatory supporting bench axial distributes has the multilayer, and every layer of grid is followed rotatory supporting bench radial interval is even arranges.
The truss structure is adopted, the push cylinder supporting frames are connected into a whole, and the installation and use precision of the guide device and the hydraulic push cylinder is ensured in the installation process; the layers of the axially distributed multi-layer grids can be conveniently adjusted according to the heights of the workpieces, and the number of layers of the guide device and the hydraulic pushing cylinder are used for controlling the shapes of the workpieces with different heights.
Further, the support comprises three circular cross beams which are arranged in the same horizontal direction along the radial direction of the rotary supporting table from inside to outside, a plurality of upright posts which are vertically arranged on the ground are respectively connected with the cross beams, and the grid is formed by the connected cross beams and upright posts.
By the last, the net that adopts crossbeam and stand to form, under satisfying installation guider and hydraulic pressure to push away the jar demand, lighten the weight of whole support, simple structure also is convenient for the installation of guider and hydraulic pressure to push away the jar.
Further, a horizontal beam is arranged between the two circular cross beams and the upright post, and a reinforcing rib is arranged between the two upper and lower adjacent horizontal beams.
By last, the strengthening rib can further improve the overall stability of support, guarantees guider and hydraulic pressure and pushes away jar installation and use precision.
Optionally, the precision shape-control inner tube mold consists of a plurality of groups of high-rigidity inner tube molds, the radian of the inner tube mold surface is matched with the inner diameter of the processed workpiece, and the contraction range of the thin-wall cylindrical part is limited by the position of the inner tube mold surface.
From the above, divide into a plurality of units with whole circumference, arrange interior child mould to each unit respectively, every unit height is adjusted along with work piece height, and the multilayer arrangement is through the shrink scope of the interior child mould fetal membrane face position restriction thin wall cylindric spare of control specific radian when necessary, makes it accord with the work piece size requirement.
Optionally, the rotary support table includes: an annular turntable framework, a supporting seat, a workpiece supporting roller, a supporting wheel and a centering wheel,
The supporting wheels are uniformly arranged on the ground by taking the circle center of the turntable framework as the center and meshed with a track arranged at the bottom of the turntable framework;
The upper end surface of the turntable framework is fixedly provided with an annular supporting seat, and the workpiece supporting rollers are obliquely and uniformly arranged on the supporting seat around the circle center of the turntable framework;
The centering wheels are uniformly arranged on the ground around the circle center of the turntable framework and are abutted against the outer circumference of the turntable framework, so that the rotation of the whole equipment during working is ensured to always run around the center of the rotary supporting table;
the turntable framework is provided with a support wheel, and a transmission system for rotating the turntable framework along the support wheel is also provided.
By last, the supporting wheel supports in the central point of rotatory supporting bench, designs multiunit supporting wheel and provides the bearing of rotatory supporting bench and work piece, when guaranteeing to roll friction, and the platform is a plane, satisfies the steady support of whole device. The centering wheel is fixed on the ground, the center of the centering wheel is the center of the rotary supporting table, and the rotation of the whole equipment during working is ensured to always run around the center of the rotary supporting table.
Further, the transmission system comprises a chain arranged on the outer side of the turntable framework, a chain wheel meshed with the chain and a gear motor for driving the chain wheel to rotate, and the rotation of the workpiece rotary supporting table is realized through chain transmission and is used for providing power for the rotation of the rotary supporting table in the detection process.
By the above, power is provided for the rotation of the rotary supporting table in the detection process, so that the size detection device is convenient for detecting the roundness and the size of the workpiece, and the correction size of the workpiece is ensured.
Optionally, the guiding device further comprises a pushing cylinder supporting frame used for installing the guiding device on the support, the pushing cylinder supporting frame is formed by adopting a split type structure through high-strength structural steel, and the hydraulic pushing cylinder is buckled on the pushing cylinder supporting frame.
The upper pushing cylinder supporting frame is a supporting part of an inner tire mold, a guiding device and a hydraulic pushing cylinder in the shape correcting equipment, and the inner tire mold and the guiding device are fixed on the pushing cylinder supporting frame to realize the positioning of a guiding position and a guiding direction and the transmission of shape correcting force during working.
Drawings
FIG. 1 is a schematic diagram of a thin-walled cylinder precision shape control apparatus of the present invention;
FIG. 2 is a top view of FIG. 1 in accordance with the present invention;
FIG. 3 is a side view of FIG. 1 of the present invention;
FIG. 4 is a view A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic view of the rotary support table of FIG. 1 according to the present invention;
Fig. 6 is a schematic view showing a connection structure of the inner membrane, the hydraulic pushing cylinder, the guiding device and the pushing cylinder supporting frame in fig. 1 according to the present invention.
Detailed Description
Specific embodiments of the thin-walled cylinder precision control apparatus according to the present invention are described in detail below with reference to fig. 1-6.
Example 1. The invention provides a thin-wall cylinder precise shape control device, which comprises a precise shape control inner tire mold 1, a hydraulic pushing cylinder 2, a guiding device 3, a bracket 4, a rotary supporting table 5 and a control system, wherein the control system monitors the hydraulic position and the action mainly through a sensor, and realizes action control through PIC.
The precise shape-control inner die 1 is composed of a plurality of groups of high-rigidity inner dies 11, as shown in fig. 1 and 3, and has the function of limiting the shrinkage range of the thin-wall cylindrical part by controlling the position of the inner die 11 surface of a specific radian by utilizing the shrinkage effect in the cooling process of a high-temperature workpiece, so that the thin-wall cylindrical part meets the size requirement of the workpiece. In the embodiment, the tire membrane surface consists of 8 groups of 24 (also can be adjusted to 36 (12 groups)) high-rigidity inner tire membranes 11, the radian of the tire membrane surface is matched with the inner diameter of a processed workpiece, the tire membrane surface can be a cylindrical part or a taper surface, and the inner tire membrane surface 11 is a machined part after casting and forging, so that the overall rigidity of the tire membrane surface is ensured to be good. In the inner tire mold machining process, requirements of diameter errors, outer wall roughness and the like of the inner tire mold 11 are met, so that the cylinder body can be freely contracted without damaging the inner wall of the cylinder body under the condition of ensuring the accurate shape of a workpiece when the shape of the cylinder body is shaped and controlled. The inner mould 11 and the guiding device 3 are the main working parts of the shape control equipment, and provide the arc surface required in shape control. The design is that the whole circumference is divided into a plurality of units, the inner tire mold 11 is respectively arranged for each unit, the height of each unit is adjusted along with the height of the workpiece, and the units can be arranged in multiple layers if necessary. The inner tire mold 11 is designed so that a sufficient margin is provided between the inner tire molds in consideration of thermal expansion, operation of the inner tire mold, and the like. The inner tire mold 11 and the guide 3 are integrally mounted on the bracket 4. When the guide device is installed, the guide device 3 is installed from the rear side of the support 4, and the inner tire mold 11 is installed from the front side of the support 4, so that maintenance of all parts of equipment is facilitated.
As shown in fig. 1 and 6, the hydraulic pushing cylinder 2 is a digital servo hydraulic pushing cylinder, the hydraulic pushing cylinder 2 is buckled on the pushing cylinder supporting frame 31, the pushing cylinder supporting frame 31 is a part of the guiding device 3, the guiding device 3 can be fixed on the pushing cylinder supporting frame 31 in a bolt connection or welding mode, and the digital servo hydraulic pushing cylinder specifically comprises a plurality of sets of digital servo hydraulic cylinders which are respectively installed behind the precisely controlled inner tire mold 1 and used for precisely and precisely controlling the micro-distance movement of the inner tire mold 1, and meanwhile, the position locking is realized through hydraulic control.
As shown in fig. 6, the push cylinder supporting frame 3 is composed of high-strength structural steel in a split type structure. The pushing cylinder supporting frame 3 is a supporting part of an inner die 11, a guiding device 3 and a hydraulic pushing cylinder 2 in the shape correcting equipment, the guiding device 3 is a guiding steel sleeve made of thicker heat-resistant steel, and the hydraulic pushing cylinder is prevented from deflecting due to factors such as installation, abrasion, thermal expansion and the like to cause the deflection of an arc surface. The inner tire mold 11 and the guiding device 3 are fixed on the pushing cylinder supporting frame 3, so that the guiding position and the guiding direction are positioned and the shape correcting force is conducted during working.
As shown in fig. 1, the bracket 4 is formed by welding profile steel. The push cylinder supporting frame 3 can be fixed on the bracket 4 in a bolt connection or welding mode, the bracket 4 adopts a truss structure, the push cylinder supporting frame 31 is connected into a whole, and the installation and use precision of the push cylinder supporting frame is ensured in the installation process. In this embodiment, the support 4 is provided with a plurality of grids 40 for installing the guide device 3 and the hydraulic pushing cylinder 2, and the grids 40 are axially distributed along the rotary supporting table 5 in multiple layers, and each layer of grids 40 are uniformly distributed along the radial direction of the rotary supporting table 5. More specifically, the stand 4 includes three circular beams 401 arranged in the same horizontal direction from inside to outside in the radial direction of the rotary support table 5, and a plurality of columns 402 arranged vertically on the ground are respectively connected to the beams 401, and the grid 40 is formed by the connected beams 401 and columns 402. And, be provided with horizontal beam 403 between two circular crossbeams 401 and the stand 402 that are located the outside, be provided with strengthening rib 404 between two upper and lower adjacent horizontal beams 403, adopt the net 40 that crossbeam 401 and stand 402 formed, under satisfying installation guider 3 and hydraulic pressure pushing cylinder 2 demand, alleviate the weight of whole support 4, simple structure also is convenient for guider 3 and hydraulic pressure pushing cylinder 2's installation. The reinforcing ribs 404 can further improve the overall stability of the bracket 4 and ensure the installation and use precision of the guide device 3 and the hydraulic push cylinder 2.
As shown in fig. 3,4 and 5, the rotary support table 5 is a work support structure, and is composed of a support base 51, work support rollers 52, an annular turntable frame 53, support wheels 54, centering wheels 55 and a transmission system 56. The rotary supporting table 5 can support the workpiece in the shape correction process and rotate the workpiece in the cooling shrinkage process, so that the size of the workpiece after the shape correction is ensured. The supporting wheels 54 are uniformly arranged on the ground by taking the circle center of the turntable framework 53 as the center, are meshed with a track arranged at the bottom of the turntable framework 53, and a plurality of wheel sets can meet the load bearing of a workpiece; the upper end surface of the turntable framework 53 is fixed with an annular supporting seat 51, and the workpiece supporting rollers 52 are obliquely and uniformly arranged on the supporting seat 51 around the circle center of the turntable framework 53; the centering wheels 55 are uniformly arranged on the ground around the circle center of the turntable framework 53 and are abutted against the outer circumference of the turntable framework 53, so that the rotation of the whole equipment during working is ensured to always run around the center of the rotary supporting table; the transmission system 56 is used for enabling the turntable framework 53 to rotate along the supporting wheel 54, and comprises a chain 561 arranged on the outer side of the turntable framework 53, a chain wheel 562 meshed with the chain 561 and a speed reducing motor 563 used for driving the chain wheel 562 to rotate, and the rotation of the workpiece rotating supporting table is realized through chain transmission and is used for providing power for the rotation of the rotating supporting table 5 in the detection process. The transmission system provides power for the rotation of the rotary supporting table 5 in the detection process, so that the size detection device is convenient for detecting the roundness and the size of the workpiece, and the correction size of the workpiece is ensured.
The workpiece is placed on workpiece supporting rollers 52 which are obliquely and uniformly arranged along the circle center of the rotary supporting table 5 through hoisting, the workpiece supporting rollers 52 are fixed on a supporting seat 51 through bolt connection, the supporting seat 51 and a turntable framework 53 are welded into a whole and supported by supporting wheels 54 which are fixed on the ground through bolts, a track is arranged at the bottom of the turntable framework 53, the rotary supporting table 5 can move along the track, and a plurality of wheel sets can meet the load bearing of the workpiece. In the process of cooling and shrinking the workpiece, the bottom of the workpiece is shrunk centripetally, the workpiece placed on the rotary supporting table 5 and the rotary supporting table 5 integrally slide centripetally along the track, sliding friction is converted into rolling friction, the influence of friction force on the bottom shrinkage of the workpiece is reduced, and the upper part and the bottom of the workpiece are guaranteed to shrink uniformly to the greatest extent.
More specifically, the turntable frame 53 is formed by welding rectangular square tubes, and the periphery of the turntable frame is provided with a steel rotary supporting table shell, so that the rotary supporting table is integrally formed, and when the shape correction device works, the weight of the workpiece and the supporting seat 51 is applied to the turntable frame 53. The supporting wheel 54 is supported at the center of the rotary supporting table 5, and a plurality of groups of supporting wheels 54 are designed to provide the bearing of the rotary supporting table 5 and the workpiece, so that the rolling friction is ensured, and meanwhile, the platform is a plane, and the stable support of the whole device is met. The centering wheel 55 is fixed on the ground, and the center of the centering wheel is the center of the rotary supporting table, so that the rotation of the whole equipment during working always runs around the center of the rotary supporting table.
The device is also provided with a size detection device for detecting parameters such as the position, roundness, flatness and the like of the workpiece, wherein the size detection device (not shown in the figure) is positioned on the outer side of the precision shape-controlled inner tube mould and uniformly arranged around the circle center of the rotary supporting table 5. When the rotary supporting table rotates, the rotary workpiece is subjected to position, roundness, flatness and other parameter measurement, and closed-loop control is formed by correcting the shape of the precise shape-control inner tube mould, so that the shape control precision is improved, and defects of products are prevented.
Example 2. The shape of the ultra-large thin-wall cylindrical part is controlled by the back-and-forth movement of the inner tire mold.
Specification of: the inner diameter of the cylinder body is 12000-12500 mm, the wall thickness of the cylinder body is 70-80 mm, and the height of the cylinder body is 4000mm.
Finishing precision: the roundness of the cylinder body is not more than +/-2.5 mm.
And (3) a correction process:
the hydraulic pushing cylinder 2 is controlled to move the inner die 11 to the circular arc position with the center of the rotary supporting table 5 as the circle center and the diameter as the workpiece size, the rotary supporting table 5 is rotated, and the size detection device is used for detecting the position of the inner die 11, so that the roundness error is not more than +/-1.0 mm.
And a special lifting appliance is adopted to lift the red-hot cylindrical workpiece after ring rolling to the thin-wall cylinder precise shape control equipment, and a size detection device is used for measuring the roundness of the cylindrical workpiece, so that the center of the cylindrical workpiece is ensured to coincide with the center of the rotary supporting table 5.
The inner die 11 is moved to be positioned at a circular arc position with the center of the rotary supporting table 5 as the center and the diameter of the circular arc position being the size of the workpiece.
The cylinder part is naturally cooled down to room temperature, the workpiece naturally contracts under the action of heat expansion and cold contraction, the radial contraction of the cylinder body during cooling is restrained by the inner tire mold 11, so that the radial contraction force of the cylinder body is changed into a normal force, the cylinder body is contracted and deformed along the circumferential direction under the action of the normal force, the inner surface of the cylinder body is naturally attached to the outer surface of the inner tire mold 11 when the cylinder body is cooled down to room temperature, and the cylinder body can meet the requirements of the size and roundness of the primary shaping.
The inner die 11 is retracted inwards, so that the lifting appliance is convenient for transferring the workpiece.
While the invention has been described with respect to the preferred embodiments, it will be understood by those skilled in the art that the invention is not limited thereto, and that any changes or substitutions that come within the spirit and scope of the invention as defined by the appended claims are intended to be embraced therein. Therefore, the protection scope of the present invention shall be subject to the scope of the claims.
Claims (6)
1. Thin wall barrel precision control shape equipment, its characterized in that includes:
the rotary supporting table is used for supporting the workpiece in the shape correction process and rotating the workpiece in the cooling shrinkage process;
the precise shape control inner tire mold is uniformly distributed around the circle center of the rotary supporting table and is used for providing an arc surface required during shape control and shape correction force conduction during working;
The hydraulic pushing cylinder is connected with the precise shape control inner tube mould and used for precisely and precisely controlling the micro-distance movement of the shape control inner tube mould;
the guide device is arranged on a piston rod of the hydraulic pushing cylinder and is used for guiding the axial movement of the hydraulic pushing cylinder and positioning the guide direction;
The bracket takes the center of the circle of the rotary supporting table as the center, is arranged on the ground in a circular shape and is used for fixing the hydraulic pushing cylinder and the guide device;
The support adopts a truss structure, a plurality of grids for installing the guide device and the hydraulic pushing cylinder are arranged on the truss structure, multiple layers of grids are axially distributed along the rotary supporting table, and each layer of grids are uniformly distributed along the radial direction of the rotary supporting table at intervals;
The rotary support table includes: an annular turntable framework, a supporting seat, a workpiece supporting roller, a supporting wheel and a centering wheel,
The supporting wheels are uniformly arranged on the ground by taking the circle center of the turntable framework as the center and meshed with a track arranged at the bottom of the turntable framework;
The upper end surface of the turntable framework is fixedly provided with an annular supporting seat, and the workpiece supporting rollers are obliquely and uniformly arranged on the supporting seat around the circle center of the turntable framework;
The centering wheels are uniformly arranged on the ground around the circle center of the turntable framework and are abutted against the outer circumference of the turntable framework, so that the rotation of the whole equipment during working is ensured to always run around the center of the rotary supporting table;
the turntable framework is provided with a support wheel, and a transmission system for rotating the turntable framework along the support wheel is also provided.
2. The thin-walled cylinder precision shape control apparatus according to claim 1, wherein,
The support comprises three circular cross beams which are arranged in the same horizontal direction along the radial direction of the rotary supporting table from inside to outside, a plurality of upright posts which are vertically arranged on the ground are respectively connected with the cross beams, and the grid is formed by the connected cross beams and upright posts.
3. The thin-walled cylinder precision shape control apparatus according to claim 2, wherein,
A horizontal beam is arranged between the two circular cross beams and the upright post which are positioned at the outer side, and a reinforcing rib is arranged between the two upper and lower adjacent horizontal beams.
4. The thin-walled cylinder precision shape control apparatus according to claim 1, wherein,
The precise shape-control inner tube mold consists of a plurality of groups of high-rigidity inner tube molds, the radian of the inner tube mold surface is matched with the inner diameter of a processed workpiece, and the contraction range of the thin-wall cylindrical part is limited by the position of the inner tube mold surface.
5. The thin-walled cylinder precision shape control apparatus according to claim 1, wherein,
The transmission system comprises a chain arranged on the outer side of the turntable framework, a chain wheel meshed with the chain and a gear motor for driving the chain wheel to rotate, and the rotation of the workpiece rotary supporting table is realized through chain transmission and is used for providing power for the rotation of the rotary supporting table in the detection process.
6. The thin-walled cylinder precision shape control apparatus according to claim 1, wherein,
The guiding device further comprises a pushing cylinder supporting frame used for installing the guiding device on the support, the pushing cylinder supporting frame is formed by adopting a split type structure through high-strength structural steel, and the hydraulic pushing cylinder is buckled on the pushing cylinder supporting frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010506652.8A CN111822548B (en) | 2020-06-05 | 2020-06-05 | Precise shape control equipment for thin-wall cylinder |
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| CN202010506652.8A CN111822548B (en) | 2020-06-05 | 2020-06-05 | Precise shape control equipment for thin-wall cylinder |
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| CN111822548A CN111822548A (en) | 2020-10-27 |
| CN111822548B true CN111822548B (en) | 2024-07-19 |
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| CN113770224B (en) * | 2021-09-10 | 2022-08-19 | 大连理工大学 | Small fillet pushing and extruding forming device for deep-cavity thin-wall box-shaped component |
| CN116428882B (en) * | 2023-06-01 | 2023-09-22 | 江苏华洋新思路能源装备股份有限公司 | Furnace inner cover surface cleaning device with rounding function |
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| CN212397702U (en) * | 2020-06-05 | 2021-01-26 | 北京机电研究所有限公司 | Precise shape control equipment for thin-wall cylinder |
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| JPH116704A (en) * | 1997-06-18 | 1999-01-12 | Kubota Corp | Contour inspection equipment for cylindrical work |
| KR101205311B1 (en) * | 2012-05-14 | 2012-11-27 | 동우에이치에스티 주식회사 | Annulus gear roundness calibration device |
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| CN212397702U (en) * | 2020-06-05 | 2021-01-26 | 北京机电研究所有限公司 | Precise shape control equipment for thin-wall cylinder |
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