CN106271354B - A kind of self centering inner support tool - Google Patents
A kind of self centering inner support tool Download PDFInfo
- Publication number
- CN106271354B CN106271354B CN201610749071.0A CN201610749071A CN106271354B CN 106271354 B CN106271354 B CN 106271354B CN 201610749071 A CN201610749071 A CN 201610749071A CN 106271354 B CN106271354 B CN 106271354B
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- CN
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- Prior art keywords
- gear
- worm
- rotary steering
- ring
- screw
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
Abstract
A kind of self centering inner support tool, rotary steering ring set are mounted in flexible centering body and therebetween clearance fit.The sphere end of expansion screw in each extrusome is each passed through in the sliding slot that the pilot hole on rotary steering ring circumferential surface is packed on flexible centering body circumferential surface.In flexible centering body worm screw is fixed with centrally through bearing.Worm gear/gear arrangement is mounted on the disc surfaces of flexible centering body by bearing；Turbine body in worm gear/gear arrangement is engaged with worm screw, and the gear mass of worm gear/gear arrangement is engaged with the ring gear section positioned at rotary steering ring end face, makes to produce relative rotation between worm gear/gear arrangement and ring gear section.In work all stretching blocks can simultaneous retractable, and the centre of location is constant always, can realize self-centering.It has determined that the center of stretching rear cylinder body or housing, has been rounded while being also achieved that cylinder or housing stretching.
Description
Technical field
The present invention relates to field of machining, specifically a kind of manufacture and pressure for space rocket engine metal housing
Force container and the self centering inner support tool of other field thin-wall barrel class parts manufacture.
Background technology
In the manufacture of space rocket engine metal housing and the manufacture of various pressure vessels, cylinder and housing are substantially
The thin wall cylinder section processing that forming or mould pressing are welded by plank is welded, and the cylinder section of either mould pressing is still welded into
The cylinder section of shape has larger deformation, and the processing, cylinder section in cylinder section are required for the group weldering of cylinder section and the processing of formation housing
Cylinder section is clamped or stretching and it is made just to be processed and weld after being rounded, is less than 300mm and small generally, for diameter
Cylinder, the housing of opening are then all usable and straight with outer fixture is proper, diameter is more than the inside and outside clampings of 300mm~600mm
Diameter has the inside and outside clamp system of more suitable tradition with inner support more than 600mm and centering is substantially carried out on lathe, then
It is adjusted one by one with bolt, stretching block or stretching block stretch to realize cylinder, cylinder section or housing clamping or stretching and make its change
Round process, this just needs centering repeatedly, repeatedly adjustment bolt, in this way, working efficiency is low, labor intensity is big.
At home and abroad in published technical literature and patented technology, the structure and operation principle of inner support tool have various shapes
Formula, but without finding the structure and principle similar with the present invention.
Invention content
To overcome needs in the prior art centering repeatedly, working efficiency caused by adjustment bolt is low repeatedly, works
The big deficiency of intensity, the present invention propose a kind of self centering inner support tool.
The present invention includes rotary steering ring, flexible centering body, ring gear section, disjunctor worm-gear toothing wheel body, slewing limit block, axis
To block, worm screw, axle bed and multiple extrusomes.The extrusome is made of expansion screw and stretching block.Wherein：Rotary steering
Ring set is mounted in the flexible centering body and therebetween clearance fit.The sphere end of expansion screw in each extrusome is worn respectively
It crosses in the sliding slot that the pilot hole on the rotary steering ring circumferential surface is packed on flexible centering body circumferential surface.Described
Flexible centering body is fixed with worm screw centrally through bearing.Worm gear/gear arrangement is mounted on the flexible centering body by bearing
Disc surfaces；Turbine body in the worm gear/gear arrangement is engaged with worm screw, the gear of the worm gear/gear arrangement
Body is engaged with the ring gear section positioned at rotary steering ring end face, makes to generate between the worm gear/gear arrangement and ring gear section
It relatively rotates.The quantity of the external peripheral surface pilot hole of the rotary steering ring, flexible centering body circumferential surface sliding slot number
Amount is identical with the quantity of extrusome.
There is slewing limit block respectively in the both sides of the worm gear/gear arrangement.In the both ends of the surface of the rotary steering ring
It is uniformly distributed respectively that there are four axial stops.
The outer diameter of the rotary steering ring be less than cylinder or housing 40~100mm of internal diameter, internal diameter it is smaller than outer diameter by 50~
100mm.The pilot hole of multiple radial directions is evenly distributed in the external peripheral surface of the rotary steering ring；There is guiding in the pilot hole
Set.The outer diameter of the guide sleeve and the pilot hole tight fit, interference volume are 0.015~0.03mm；The internal diameter of the guide sleeve is with stretching
The crest clearance cooperation of compression screw arbor.Ring gear section is installed in an end face of the rotary steering ring.In the rotary steering ring
There is the screw hole for being equipped with and installation revolution limited block and axial stop being useful on the end face of ring gear section, in the rotary steering ring
Another end face be useful for installation axial stop screw hole.
The screw hole of installation bearing block is useful at the center of the flexible centering body.In the circumference table of the flexible centering body
Face is evenly equipped with multiple sliding slots；The length direction of the sliding slot is circumferential consistent with the flexible centering body；The bottom surface of the sliding slot is
Cambered surface, and the groove depth of the one end is h, and the groove depth of the other end is h1, h1=h+l；L is the stroke of expansion screw.It is described
The cross section of sliding sliding slot slot uses trapezoid groove structure.It is circular hole in the end point that the sliding slot depth is h one end, the hole of the circular hole
Diameter is slightly larger than the diameter of the bulb of expansion screw end, in order to be packed into the bulb of the expansion screw.
Disjunctor/the gear mass is made of gear mass, bearing socket and worm wheel body, wherein the internal diameter and bearing of bearing socket
Outer diameter it is identical.There is the gear mass in sector of radially protruding on the bearing socket external peripheral surface；The gear mass arc-shaped
Top surface be the flank of tooth coordinated with ring gear section.Also there is the snail in sector of radially protruding on the bearing socket external peripheral surface
Wheel body；The top surface of the arc-shaped of the worm wheel body is the flank of tooth coordinated with worm screw.The gear mass is symmetrically distributed in worm wheel body
The circumferential surface of bearing socket.
The ring gear Duan Weiyi sections of torus.The internal diameter and outer diameter of the ring gear section are with rotary steering ring internal diameter and outside
Diameter is identical.
The extrusome has multiple.In each extrusome, the outer surface of stretching block and inner surface are cambered surface, expansion screw
One end be threadedly secured to the geometric center of stretching block inner surface, and perpendicular to the inner surface.The expansion screw it is another
One end end is bulb.The stretching block is made of aluminum or aluminum alloy or copper or copper alloy；The expansion screw uses carbon steel
Or steel alloy is made.The bulb surface of the expansion screw needs quenched processing.
The present invention at work, all stretching blocks can simultaneous retractable, and the centre of location is constant always, can realize from
Dynamic centering.The worm screw rotation driving that the present invention is mounted on by the way that handwheel is rotated to drive on flexible centering body is on flexible centering body
The rotation of disjunctor worm-gear toothing, make under the action of disjunctor worm-gear toothing the ring gear section being mounted on rotary steering body rotation；
While the drive rotary steering body rotation of ring gear section, dovetail groove movement of the retract bolt in flexible centering body, in ladder
Retract bolt is made to stretch out and shrink under the action of shape trench bottom and top, so as to drive the stretching block on retract bolt to cylinder
Body carries out stretching and release；Since all retract bolts are all simultaneous retractables and stretching speed is identical, is all along outer ring body
What pilot hole carried out, therefore, telescoping center is constant, and the center of stretching rear cylinder body or housing is thus determined, is also achieved that
It is rounded while cylinder or housing stretching.
The present invention key technology be：
1st, the rotating mechanism that ring body relatively rotates inside and outside realizing；
2nd, the telescoping mechanism that retract bolt and stretching block stretch is realized.
In the invention, when rotating handwheel, handwheel drives the worm screw being connected on flexible centering body by bearing block to turn
Dynamic, so as to which the worm gear being connected on disjunctor worm-gear toothing wheel body by axle bed be driven to rotate, and gear parts drive connection is rotating
Ring gear section rotation on guide ring, in this way, it is flexible so as to push that rotary steering ring is made to produce relative rotation with flexible centering body
Screw rod moves in the sliding slot of flexible centering body, under the action of the bottom of sliding slot or top, expansion screw it is protruding or to
Interior retraction, protruding or inside retraction are stretched out or are retracted along the guide sleeve in rotary steering ring, because
This its center is exactly the centre of gyration of rotary steering ring.During expansion screw drives stretching flexible soon, stretching out or
During the different location of retraction, the fast periphery of all stretchings forms the concentric circles of different size size, and the center of circle is all that rotation is led
To the centre of gyration of ring, that is, when its stretching workpiece, the center of circle is also the centre of gyration of rotary steering ring, and here it is the inventions
There is the reason of self-centering.Since the present invention is during stretching, all stretching blocks by retract bolt simultaneously
It extending and retracting, and is always the same center of circle during flexible, the center of circle is constant while realizing that cylinder or housing step up,
Workpiece school is justified simultaneously during stretching.Compared with other type inner supports have, compact-sized, easy to operate, efficiency of the invention
Height, labor intensity is small, has extensive application value.
Description of the drawings
Fig. 1 is the structure diagram of self-centering inner support tool；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the structure diagram of disjunctor worm-gear toothing；
Fig. 4 is the A-A sectional views in Fig. 3；
Fig. 5 is the structure diagram of rotary steering ring；
Fig. 6 is the structure diagram of flexible centering body, wherein：Fig. 6 a are front views, and Fig. 6 b are the A direction views in Fig. 6 a,
Fig. 6 c are the B-B sectional views in Fig. 6 b, and Fig. 6 d are the partial schematic diagrams of sliding slot in Fig. 6 a.In figure：
1. rotary steering ring；2. flexible centering body；3. ring gear section；4. worm gear/gear arrangement；5. slewing limit block；
6. axial stop；7. worm screw；8. bearing block；9. guide sleeve；10. expansion screw；11. stretching block；12. handwheel；13. axle bed；14.
Bearing；15. gear mass；16. bearing socket；17. worm wheel body.
Specific embodiment
The present embodiment is a kind of self centering inner support tool, can be to thin-wall barrel, cylinder section class part and housing class product
It can realize that it is rounded automatically during stretching during processing, welding.
The present embodiment includes rotary steering ring 1, flexible centering body 2, ring gear section 3, disjunctor worm-gear toothing wheel body 4, revolution limit
Position block 5, axial stop 6, worm screw 7, bearing block 8, guide sleeve 9, handwheel 12, axle bed 13, bearing 14 and multiple extrusomes.Described
Extrusome is made of expansion screw 10 and stretching block 11.
Wherein：Rotary steering ring 1 is sleeved on the flexible centering body 2 and therebetween clearance fit.In each extrusome
The sphere end of expansion screw be each passed through pilot hole on the rotary steering ring circumferential surface and be packed into flexible centering body
In sliding slot on circumferential surface.In the flexible centering body worm screw 7 is fixed with centrally through bearing；One end of the worm screw is equipped with
Handwheel 12.Axle bed 13 is fixed in the disc surfaces of the flexible centering body 2, worm gear/gear arrangement 4 is set with by bearing 14
On the axle bed 13, and the turbine body 17 in the worm gear/gear arrangement is made to be engaged with worm screw, make the worm gear/gear
The gear mass 15 of assembly is engaged with positioned at the ring gear section 4 of 1 end face of rotary steering ring, make the worm gear/gear arrangement with
It produces relative rotation between ring gear section.There is slewing limit block 5 respectively in the both sides of the worm gear/gear arrangement, for limiting
The fixed angle relatively rotated between the worm gear/gear arrangement and ring gear section.In the both ends of the surface point of the rotary steering ring 1
It Jun Bu not be there are four axial stop 6, for preventing the axial float of the rotary steering ring and flexible centering body 2.
The rotary steering ring 1 is ring-type, is made of carbon steel.The outer diameter of the rotary steering ring is less than cylinder or housing
40~100mm of internal diameter, internal diameter are smaller 50~100mm than outer diameter.It is evenly distributed in the external peripheral surface of the rotary steering ring more
The pilot hole of a radial direction；The quantity of the pilot hole is determined according to the diameter of cylinder or housing, to meet support middle cylinder body or housing
Uniform stressed；There is guide sleeve 9 in the pilot hole.The outer diameter of the guide sleeve and the pilot hole tight fit, interference volume 0.015
~0.03mm；The internal diameter of the guide sleeve 9 coordinates with the crest clearance of expansion screw 10.At an end of the rotary steering ring 1
Face installation ring gear section 3.Have to be equipped on the end face of ring gear section in the rotary steering ring 1 and be useful for installation revolution limited block
5 and the screw hole of axial stop 6, the screw hole of installation axial stop 6 is useful in another end face of the rotary steering ring 1.
The flexible centering body 2 is also discoid, is made of carbon steel.It is useful at the center of the flexible centering body 2
The screw hole of bearing block 8 is installed.Multiple sliding slots are evenly equipped in the circumferential surface of the flexible centering body；The length direction of the sliding slot with
The circumferential direction of the flexible centering body is consistent；The bottom surface of the sliding slot is cambered surface, and the groove depth of the one end is h, the other end
Groove depth is h1, h1=h+l；L is the stroke of expansion screw.The cross section of the sliding slot slot uses trapezoid groove structure.Institute
It is circular hole to state the end point that sliding slot depth is h one end, and the aperture of the circular hole is slightly larger than the diameter of the bulb of expansion screw end, with
Convenient for being packed into the bulb of the expansion screw.Lightening hole is machined in the end face of the flexible centering body.
Disjunctor/the gear mass 4 is made of gear mass 15, bearing socket 16 and worm wheel body 17, wherein bearing socket 16
Internal diameter is identical with the outer diameter of bearing 14.There is the gear mass 15 of radially protruding on 16 external peripheral surface of bearing socket；The gear
For body 15 in sector, the top surface of arc-shaped is the flank of tooth coordinated with ring gear section.On 16 external peripheral surface of bearing socket also
There is the worm wheel body 17 of radially protruding；For the worm wheel body 15 also in sector, the top surface of arc-shaped is the flank of tooth coordinated with worm screw.It is described
Gear mass 15 is symmetrically distributed in the circumferential surface of bearing socket 16 with worm wheel body 17.
The ring gear section 3 is one section of torus.The internal diameter and outer diameter of the ring gear section 3 with rotary steering ring internal diameter and
Outer diameter is identical.
The extrusome has multiple.In each extrusome, the outer surface of stretching block 11 and inner surface are cambered surface, and stretch spiral shell
One end of bar 10 is threadedly secured to the geometric center of 11 inner surface of stretching block, and perpendicular to the inner surface.The flexible spiral shell
The other end end of bar 10 is bulb.The stretching block 11 is made of aluminum or aluminum alloy or copper or copper alloy；The flexible spiral shell
Bar 10 is made of carbon steel or steel alloy.The bulb surface of the expansion screw needs quenched processing.
The quantity of the external peripheral surface pilot hole of the rotary steering ring, flexible centering body circumferential surface sliding slot quantity
It is identical with the quantity of extrusome.
The both ends of the worm screw 7 are Step Shaft, centre is worm tooth shape structure, are made of steel alloy, and quenched place
Reason.There is the cubic spindle nose of installation handwheel at the center of 7 one end end of worm screw.
Limited block 5 is tablet sector structure, is made of carbon steel；Axial stop 6 is tablet square structure, using material carbon steel
It is made.
Claims (6)
1. a kind of self centering inner support tool, which is characterized in that including rotary steering ring, flexible centering body, ring gear section, snail
Wheel/gear arrangement, slewing limit block, axial stop, worm screw, axle bed and multiple extrusomes；The extrusome is by the spiral shell that stretches
Bar and stretching block composition；Wherein：Rotary steering ring set is mounted in the flexible centering body and therebetween clearance fit；It is each flexible
The pilot hole that the sphere end of expansion screw in body is each passed through on the rotary steering ring circumferential surface is packed into flexible fixed
In sliding slot on heart body circumferential surface；In the flexible centering body worm screw is fixed with centrally through bearing；The axle bed is fixed on
The disc surfaces of the flexible centering body, worm gear/gear arrangement is by bearing holder (housing, cover) on the axle bed；Worm gear/the gear set
Worm wheel body in zoarium is engaged with worm screw, and the gear mass of the worm gear/gear arrangement is with being located at the interior of rotary steering ring end face
Gear ring section engages, and makes to produce relative rotation between the worm gear/gear arrangement and ring gear section；Outside the rotary steering ring
The quantity of circumferential surface pilot hole, flexible centering body circumferential surface sliding slot quantity it is identical with the quantity of extrusome；
The screw hole of installation bearing block is useful at the center of the flexible centering body；It is equal in the circumferential surface of the flexible centering body
It is furnished with multiple sliding slots；The length direction of the sliding slot is circumferential consistent with the flexible centering body；The bottom surface of the sliding slot is cambered surface,
And the groove depth of the one end is h, and the groove depth of the other end is h1, h1=h+l；L is the stroke of expansion screw；The sliding slot
Cross section use trapezoid groove structure；It is circular hole in the end point that the sliding slot depth is h one end, the aperture of the circular hole is slightly larger than
The diameter of the bulb of expansion screw end, in order to be packed into the bulb of the expansion screw；
The outer diameter of the rotary steering ring is less than cylinder or 40~100mm of internal diameter, the internal diameter of housing are smaller 50~100mm than outer diameter；
The pilot hole of multiple radial directions is evenly distributed in the external peripheral surface of the rotary steering ring；There is guide sleeve in the pilot hole；It should
The outer diameter of guide sleeve and the pilot hole tight fit, interference volume are 0.015~0.03mm；The internal diameter and expansion screw of the guide sleeve
Crest clearance cooperation.
2. self centering inner support tool as described in claim 1, which is characterized in that in the both sides of the worm gear/gear arrangement
There is slewing limit block respectively；Axial stop there are four being evenly distributed with respectively in the both ends of the surface of the rotary steering ring.
3. self centering inner support tool as described in claim 1, which is characterized in that pacify in an end face of the rotary steering ring
Fill ring gear section；Have to be equipped on the end face of ring gear section in the rotary steering ring and be useful for installation revolution limited block and axial direction
The screw hole of block is useful for the screw hole of installation axial stop in another end face of the rotary steering ring.
4. self centering inner support tool as described in claim 1, which is characterized in that the worm gear/gear arrangement by gear mass,
Bearing socket and worm wheel body composition, the internal diameter of wherein bearing socket are identical with the outer diameter of bearing；In the bearing socket outer circle weekly form
There is the gear mass in sector of radially protruding on face；The top surface of the gear mass arc-shaped is the flank of tooth coordinated with ring gear section；
Also there is the worm wheel body in sector of radially protruding on the bearing socket external peripheral surface；The top surface of the arc-shaped of the worm wheel body be with
The flank of tooth of worm screw cooperation；The gear mass is symmetrically distributed in the circumferential surface of bearing socket with worm wheel body.
5. self centering inner support tool as described in claim 1, which is characterized in that the ring gear Duan Weiyi sections of torus；It should
The internal diameter and outer diameter of ring gear section are identical with rotary steering ring internal diameter and outer diameter.
6. self centering inner support tool as described in claim 1, which is characterized in that the extrusome has multiple；In each extrusome
In, the outer surface of stretching block and inner surface are cambered surface, and one end of expansion screw is threadedly secured to stretching block inner surface
Geometric center, and perpendicular to the inner surface；The other end end of the expansion screw is bulb；The stretching block uses aluminium or aluminium
Alloy or copper or copper alloy are made；The expansion screw is made of carbon steel or steel alloy；The bulb surface of the expansion screw
Need quenched processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749071.0A CN106271354B (en) | 2016-08-29 | 2016-08-29 | A kind of self centering inner support tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749071.0A CN106271354B (en) | 2016-08-29 | 2016-08-29 | A kind of self centering inner support tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271354A CN106271354A (en) | 2017-01-04 |
| CN106271354B true CN106271354B (en) | 2018-06-29 |
Family
ID=57676289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610749071.0A Active CN106271354B (en) | 2016-08-29 | 2016-08-29 | A kind of self centering inner support tool |
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| CN (1) | CN106271354B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128538B (en) * | 2018-09-07 | 2020-07-03 | 重庆工业职业技术学院 | Aluminum alloy magazine welding deformation control device and control method |
| CN110293329B (en) * | 2019-06-29 | 2021-06-22 | 中国二十二冶集团有限公司 | Construction method for mounting and adjusting large gear and special tool thereof |
| CN110369945B (en) * | 2019-07-24 | 2020-09-04 | 杭州芷盛网络科技有限公司 | Centering device for building pipeline based on synchronous motion principle |
| CN113399828B (en) * | 2021-06-21 | 2022-04-08 | 江苏沪云激光设备有限公司 | Laser welding machine for processing reducing pipe |
| CN113231721B (en) * | 2021-07-09 | 2021-11-26 | 南通泰胜蓝岛海洋工程有限公司 | Non-back-gouging welding process for fan tower shell ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283115A (en) * | 1964-12-31 | 1966-11-01 | Exxon Research Engineering Co | Strong-back clamping system for holding pipe joints during welding |
| US5285947A (en) * | 1992-09-14 | 1994-02-15 | Cogsdill Tool Products, Inc. | Welding fixture |
| JPH08197246A (en) * | 1995-01-25 | 1996-08-06 | Chiyoda Corp | Steel pipe automatic welding equipment |
| CN201931245U (en) * | 2010-12-28 | 2011-08-17 | 张春满 | Internal aligning device for thin pipe |
| CN205393915U (en) * | 2016-03-14 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Deformation support frock is prevented to major diameter thin wall barrel |
-
2016
- 2016-08-29 CN CN201610749071.0A patent/CN106271354B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283115A (en) * | 1964-12-31 | 1966-11-01 | Exxon Research Engineering Co | Strong-back clamping system for holding pipe joints during welding |
| US5285947A (en) * | 1992-09-14 | 1994-02-15 | Cogsdill Tool Products, Inc. | Welding fixture |
| JPH08197246A (en) * | 1995-01-25 | 1996-08-06 | Chiyoda Corp | Steel pipe automatic welding equipment |
| CN201931245U (en) * | 2010-12-28 | 2011-08-17 | 张春满 | Internal aligning device for thin pipe |
| CN205393915U (en) * | 2016-03-14 | 2016-07-27 | 东方电气集团东方锅炉股份有限公司 | Deformation support frock is prevented to major diameter thin wall barrel |
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| Publication number | Publication date |
|---|---|
| CN106271354A (en) | 2017-01-04 |
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