CN104646998B - The internal automatic forming of self-priming bulging device, tubing and self-align rolling device - Google Patents
The internal automatic forming of self-priming bulging device, tubing and self-align rolling device Download PDFInfo
- Publication number
- CN104646998B CN104646998B CN201410852547.4A CN201410852547A CN104646998B CN 104646998 B CN104646998 B CN 104646998B CN 201410852547 A CN201410852547 A CN 201410852547A CN 104646998 B CN104646998 B CN 104646998B
- Authority
- CN
- China
- Prior art keywords
- mandrel
- self
- retainer
- tubing
- automatic forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/022—Extracting or inserting relatively long parts
Abstract
The invention provides a kind of self-priming bulging device, the internal automatic forming of tubing and self-align rolling device, described self-priming bulging device includes retainer (1), mandrel (7) and multiple roller (2), one end of mandrel (7) is provided with conical section (71), multiple rollers (2) are evenly distributed between the conical section (71) of retainer (1) and mandrel (7), when the conical section (71) of mandrel (7) extrudes roller (2), roller (2) is more than the roller (2) axial thrust load to the extruding force of mandrel (7) to the axial thrust load of the frictional force of mandrel (7).This self-priming bulging device improves mandrel force-bearing situation, improves bulging device service life；The internal automatic forming of this tubing and self-align rolling device achieve bulging device and frock clamp axially self positioning function, reduce the positioning accuracy request of frock clamp own, reduce frock clamp difficulty of processing, thus reduce processing cost, ensure connector forming accuracy simultaneously.
Description
Technical field
The present invention relates to tubing interconnection technique field, particularly a kind of rolling without enlarging internal diameter for titanium alloy conduit connects
Self-priming bulging device, the internal automatic forming of a kind of tubing containing this self-priming bulging device and self-align rolling device.
Background technology
Titanium alloy conduit is mainly used in the hydraulic plumbing system of aircraft engine without enlarging internal diameter rolling interconnection technique, bears
Higher pressure and complex vibration environment.Compared with conventional coupling arrangement, have: high leakproofness, self-locking vibration resistance, lightweight,
It is suitable for thin-wall high intensity and titanium alloy pipe, life-span high.This technology is the most highly developed at national developments such as America and Europes, special
Equipment has realized computer automation, extensively applies at aerospace field.Russia also develops comparatively fast, on Multiple Type
To application.
Domestic start late, the most mainly introduce and digest and assimilate external technique, in recent years, along with aircraft engine liquid
Improving constantly of hydraulic pipe performance, proposes higher requirement, traditional flared joint and squash type to pipeline interconnection technique
It is unsatisfactory for requirement without flared joint, type aircraft has clearly proposed use titanium alloy conduit to roll connector without enlarging internal diameter,
Also there are tight demand, each main engine plants and institute that titanium alloy conduit is carried out without enlarging internal diameter rolling interconnection technique deeply on electromotor
Enter research, obtain very fast progress.
Existing titanium alloy conduit rolls interconnection technique without enlarging internal diameter, as it is shown in figure 1, in bulging device is titanium alloy conduit
The fixture for forming that footpath rolling connects, critical piece includes mandrel 7, roller 2 and retainer 1.During shaping, the mandrel 7 of bulging device exists
Motor drives and rotates below limit and axially advance, roller 2 rotation revolving round the sun with mandrel 7 under frictional force effect, radial feed simultaneously,
Extruded conduit 22 material embeds the groove of pipe box 21, so that conduit 22 is closely joined together with pipe box 21.
But along with tube material intensity, hardness improve constantly, there are problems in use process in bulging device.As shaped
Cheng Zhong, mandrel is motor driven axially propelling, mandrel by radial compression power and and roller between slip with roll mixed film friction
Power effect, along with tubing intensity, the raising of hardness, mandrel stress is increasing, the frequently phenomenon such as fracture and top layer decortication occurs,
Have a strong impact on connection effect and technology stability.
Summary of the invention
In order to solve short problem in existing mandrel service life.The invention provides in a kind of self-priming bulging device, tubing
Portion's automatic forming and self-align rolling device, self-priming bulging device, by optimizing bulging device structure, improves mandrel force-bearing situation,
Improve bulging device service life, save manufacturing cost, beneficially technology stability；The internal automatic forming of tubing and self-align
Rolling device achieves bulging device and frock clamp axially self positioning function, reduces the positioning precision of frock clamp own and wants
Ask, reduce frock clamp difficulty of processing, thus reduce processing cost, ensure connector forming accuracy simultaneously.
The present invention solves that its technical problem the technical scheme is that a kind of self-priming bulging device, including retainer, core
Axle and multiple roller, one end of mandrel is provided with conical section, and retainer is sheathed on outside mandrel, and along the circumference of mandrel, multiple rollers are equal
Even is distributed between retainer and the conical section of mandrel, when the conical section of mandrel extrudes roller, and the roller friction to mandrel
The axial thrust load of power is more than the roller axial thrust load to the extruding force of mandrel.
I.e. the angle between axis and the axis of mandrel 7 of roller 2 is α, and the half of the coning angle of conical section 71 is β, rolling
Post 2 is F to the frictional force of mandrel 7, and roller 2 is N, F × sin α ＞ N × sin β to the extruding force of mandrel 7.
The internal automatic forming of a kind of tubing and self-align rolling device, containing above-mentioned self-priming bulging device, retainer
Extenal fixation has the pedestal of tubular, and when mandrel rotates, pedestal keeps resting state, and retainer together rotates with mandrel.
Retainer fixed sleeves is provided with retainer and fixes seat, and retainer is fixed and is provided with thrust ball bearing between seat and pedestal,
This thrust ball bearing is set in outside retainer.
Retainer and this thrust ball bearing matched in clearance, retainer and retainer fix seat matched in clearance, this thrust ball axle
Holding and pedestal matched in clearance, retainer fixes seat and pedestal matched in clearance.
Retainer contains the big footpath section and path section being sequentially connected with, and path section is sheathed on outside the conical section of mandrel, this thrust
Ball bearing and retainer fixed seating are located at outside the section of big footpath.
The internal automatic forming of this tubing and self-align rolling device are possibly together with the drive mechanism for driving mandrel to rotate.
The left side of pedestal is provided with the interior fixture for gripping pipe box, and interior fixture is externally provided with for gripping interior fixture
Outer fixture.
Interior fixture is annular, and the outer wall of interior fixture is provided with peripheral flange, and the inwall of interior fixture is provided with for stoping pipe box
The multiple draw-in grooves moved axially with conduit.
Interior fixture is arranged on the right side of outer fixture, interior fixture and outer fixture matched in clearance on the axis direction of mandrel, interior
Fixture abuts with pedestal.
Interior fixture is monolithic construction, and outer fixture divides half formula structure.
The invention has the beneficial effects as follows:
1, the present invention is by improving bulging device structure, optimizes rolling Joining Technology process, improves production efficiency；
2, this self-priming bulging device auto-feed, stress improvement, mandrel wear is little, and the life-span improves；Equipment is shaped
Capability Requirement reduces；
3, the internal automatic forming of this tubing and self-align rolling device can realize the most self-align, automatic centering, improve
Connector forming accuracy, also reduces the processing cost of frock clamp simultaneously.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings to automatic forming and self-align rolling inside self-priming bulging device of the present invention and tubing
Pressure device is described in further detail.
Fig. 1 is the structural representation of existing bulging device.
Fig. 2 is the internal automatic forming of tubing and the structural representation of self-align rolling device.
The schematic diagram of the roller groove that Fig. 3 is to maintain in frame.
Fig. 4 is the schematic diagram of extruding force suffered by mandrel.
Fig. 5 is the schematic diagram of mandrel friction.
Fig. 6 is interior fixture and the structure of outer fixture and force analysis schematic diagram.
Fig. 7 is interior clamp structure schematic diagram.
Wherein
1. retainer, 11. roller grooves, 12. big footpath sections, 13. path section, 2. roller, 3. pedestal, 4. end rings；5.
Retainer fixes seat, 6. retainer back-up ring, 7. mandrel, 71. conical section, outer fixture, 9. in fixture；
21. pipe boxes, 22. conduits；
91. first draw-in grooves, 92. first draw-in grooves, 93. first draw-in grooves.
Detailed description of the invention
Below in conjunction with the accompanying drawings self-priming bulging device of the present invention is described in further detail.A kind of self-priming swollen
Shape device, described self-priming bulging device includes retainer 1, mandrel 7 and multiple roller 2, and one end of mandrel 7 is provided with conical section 71, protects
Holding frame 1 to be sheathed on outside mandrel 7, along the circumference of mandrel 7, multiple rollers 2 are evenly distributed in the conical section of retainer 1 and mandrel 7
Between 71, when the conical section 71 of mandrel 7 extrudes roller 2, roller 2 is right more than roller 2 to the axial thrust load of the frictional force of mandrel 7
The axial thrust load of the extruding force of mandrel 7, as shown in Figures 2 to 5.
The roller groove 11 for installing fixing roller 2 it is provided with, as shown in Figure 3 in retainer 1.In prior art, roller 2
For cone, the taper seat of roller 2 coordinates with the conical section 71 of mandrel 7, and the axis of roller 2 is positioned at same with the axis of mandrel 7
In plane, roller 2 and mandrel 7 linear contact lay.And the present invention be roller 2 is cone, the circular cone of the taper seat of roller 2 and mandrel 7
Section 71 coordinates, the axis of the axis of roller 2 and mandrel 7 the most in the same plane, roller 2 and mandrel 7 point cantact, the axle of roller 2
The angle of setting is there is between the axis of line and mandrel 7.
Angle between axis and the axis of mandrel 7 of roller 2 is α, i.e. the centrage of roller groove 11 and retainer 1
Angle between centrage is α, and the half of the coning angle of conical section 71 is β, as shown in Figure 4 and Figure 5.In forming process, initially
Time roller 2, the inwall of conduit 22 and mandrel 7 produce initial close contact, each inter-module has contact force, now this mandrel 7
Rotate, due to the effect of intimate contact force, between roller 2 and mandrel 7, produce tangential friction force, roller 2 this friction to mandrel 7
Power is F, and roller 2 is N to the extruding force of mandrel 7.N produces component, respectively N1 and N2 with radial direction in the horizontal direction, and F exists
Horizontal direction and tangential generation one component, respectively F1 and F2, as shown in Figure 4 and Figure 5, wherein:
N1=Nsin β；N2=Ncos β
F1=Fsin α；F2=Fcos α
So mandrel 7 stress that (mandrel 7 axial) is total in the horizontal direction is:
F1-N1=Fsin α-Nsin β
Select suitable α and β, make F1 N1.So, mandrel 7 will axially enter (along mandrel 7) while rotating automatically
Giving, the roller 2 movement locus on mandrel 7 is spiral line type, is pure rolling friction between the two.Retainer 1 and retainer are fixed
Seat 5 is threaded.In prior art, mandrel 7 must under motor thrust could feeding, remove between mandrel 7 and roller 2
Also having sliding friction outside rolling friction, compared with the present invention, mandrel 7 stress is more severe, easily occur surface decortication and
The phenomenons such as fracture, easily lost efficacy, and required the highest to equipment crystallized ability.And the self-priming bulging device auto-feed of the present invention, it is subject to
Power condition improvement, mandrel wear is little, and the life-span improves；Require to reduce to equipment crystallized ability.
The internal automatic forming of a kind of tubing and self-align rolling device, containing above-mentioned self-priming bulging device, this is self-priming
The retainer 1 of bulging device is externally provided with the pedestal 3 of tubular, and when mandrel 7 rotates, pedestal 3 keeps resting state, and retainer 1 is with core
Axle 7 together rotates, as shown in Figure 2.
Retainer 1 fixed sleeves is provided with retainer and fixes seat 5 and thrust ball bearing, and retainer fixes seat 5 and thrust ball axle
Bearing sleeve is located between retainer 1 and pedestal 3, and when mandrel 7 rotates, pedestal 3 keeps resting state, retainer 1 and retainer solid
Reservation 5 together rotates with mandrel 7.Retainer 1 and retainer are fixed seat 5 and are connected by screw, and retainer 1 fixed sleeves is provided with guarantor
Holding frame back-up ring 6, pedestal 3 coordinates with equipment, and the internal automatic forming of this tubing and self-align rolling device are possibly together with being used for driving
The drive mechanism that mandrel 7 rotates, mandrel 7 is connected with the motor shaft of this drive mechanism by spline.
Retainer 1 and this thrust ball bearing matched in clearance, retainer 1 and retainer fix seat 5 matched in clearance, this thrust ball
Bearing and pedestal 3 matched in clearance, retainer fixes seat 5 and pedestal 3 matched in clearance.Retainer 1 is containing being sequentially connected with from right to left
Big footpath section 12 and path section 13, path section 13 is sheathed on outside the conical section 71 of mandrel 7 left end, this thrust ball bearing and retainer
Fixing seat 5 is set in outside big footpath section 12.It addition, in forming process between conduit 22, pipe box 21, roller 2, mandrel 7 and retainer 1
Contact for being in close contact, it is ensured that the centrage of conduit and mandrel 7 overlaps, thus realizes self-centering function, it is ensured that connector
The concordance axially connected.
As in figure 2 it is shown, the left side of pedestal 3 is provided with the interior fixture 9 gripping pipe box 21, it is solid that interior fixture 9 is externally provided with clamping
The outer fixture 8 of fixture 9 in fixed.
As shown in Figures 5 to 7, interior fixture 9 is annular, and the outer wall of interior fixture 9 is provided with peripheral flange 91, in outer fixture 8
Being provided with the annular groove matched with peripheral flange 91, the inwall of interior fixture 9 is provided with for stoping pipe box 21 and conduit 22 axial
Three draw-in grooves of movement.Three draw-in grooves have different positioning function, the first draw-in groove 91 and the second draw-in groove 92 respectively with pipe box 21
Relevant position coordinates, and prevents pipe box 21 from moving axially, and the interior profile of interior fixture 9 is joined with pipe box 21 relevant position outer mold surface
Closing, when preventing from shaping, pipe box 21 radial deformation is excessive；3rd draw-in groove 93 withstands the termination of conduit 22, it is ensured that connector end is stretched
Output.
Interior fixture 9 is arranged on the right side of outer fixture 8, and interior fixture 9 is joined in gap on the axis direction of mandrel 7 with outer fixture 8
Closing, interior fixture 9 abuts with pedestal 3.During shaping, the axial force suffered by mandrel 7 is F1-N1, utilizes active force and counteracting force
Principle, therefore conduit 22 by power G contrary with mandrel 7, and can produce the effect moved axially.The axial displacement of conduit 22 is by inner clip
Tool 9 restriction, so power G is partially transferred to interior fixture 9 by conduit 22, makes interior fixture 9 by axial force P, and interior fixture 9 is in the effect of power P
The lower automatic pedestal 3 with bulging device fits tightly, and therefore, when the inside and outside fixture assembly relation of design, is axially matched in clearance, this
Sample i.e. can guarantee that conduit 22 and the axial rigging position of pipe box 21, it is achieved the most self-align, again can easy disassembly, reduce simultaneously inside and outside
The machining accuracy of fixture, saves processing cost.
It addition, interior fixture 9 is monolithic construction, 8 point of half formula structure of outer fixture.Outer fixture 8 includes relative to mandrel 7 axle
Two parts of the plane at line place mirror image each other.
The above, the only specific embodiment of the present invention, it is impossible to limit the scope that invention is implemented with it, so its equivalent
The displacement of assembly, or the equivalent variations made according to scope of patent protection of the present invention and modification, all should still fall within what this patent was contained
Category.It addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, technical scheme with
All can use with independent assortment between technical scheme.
Claims (10)
1. a self-priming bulging device, it is characterised in that described self-priming bulging device includes retainer (1), mandrel (7) and multiple
Roller (2), one end of mandrel (7) is provided with conical section (71), and retainer (1) is sheathed on mandrel (7) outward, along the circumference of mandrel (7),
Multiple rollers (2) are evenly distributed between the conical section (71) of retainer (1) and mandrel (7), when the conical section of mandrel (7)
(71), during extruding roller (2), mandrel (7) is squeezed by roller (2) by the axial thrust load of the frictional force of mandrel (7) more than roller (2)
The axial thrust load of pressure.
2. the internal automatic forming of a tubing and self-align rolling device, it is characterised in that: the internal automatic forming of this tubing and
Self-align rolling device contains the self-priming bulging device described in claim 1, and retainer (1) extenal fixation has the pedestal of tubular
(3), when mandrel (7) rotates, pedestal (3) keeps resting state, and retainer (1) together rotates with mandrel (7).
The internal automatic forming of tubing the most according to claim 2 and self-align rolling device, it is characterised in that: retainer
(1) fixed sleeves is provided with retainer and fixes seat (5), and retainer is fixed and is provided with thrust ball bearing between seat (5) and pedestal (3), should
Thrust ball bearing is set in retainer (1) outward.
The internal automatic forming of tubing the most according to claim 3 and self-align rolling device, it is characterised in that: retainer
(1) with this thrust ball bearing matched in clearance, retainer (1) and retainer fix seat (5) matched in clearance, this thrust ball bearing and seat
Body (3) matched in clearance, retainer fixes seat (5) and pedestal (3) matched in clearance.
The internal automatic forming of tubing the most according to claim 4 and self-align rolling device, it is characterised in that: retainer
(1) containing big footpath section (12) being sequentially connected with and path section (13), path section (13) is sheathed on the conical section (71) of mandrel (7)
Outward, this thrust ball bearing and retainer are fixed seat (5) and are set in big footpath section (12) outward.
The internal automatic forming of tubing the most according to claim 3 and self-align rolling device, it is characterised in that: this tubing
Internal automatic forming and self-align rolling device are possibly together with being used for the drive mechanism that drives mandrel (7) to rotate.
The internal automatic forming of tubing the most according to claim 3 and self-align rolling device, it is characterised in that: pedestal
(3) left side is provided with the interior fixture (9) for gripping pipe box (21), and interior fixture (9) is externally provided with for gripping inner clip
The outer fixture (8) of tool (9).
The internal automatic forming of tubing the most according to claim 7 and self-align rolling device, it is characterised in that: interior fixture
(9) being annular, the outer wall of interior fixture (9) is provided with peripheral flange (91), and the inwall of interior fixture (9) is provided with for stoping pipe box
And multiple draw-in grooves of moving axially of conduit (22) (21).
The internal automatic forming of tubing the most according to claim 8 and self-align rolling device, it is characterised in that: interior fixture
(9) right side of outer fixture (8), interior fixture (9) and outer fixture (8) matched in clearance on the axis direction of mandrel (7) it are arranged on, interior
Fixture (9) abuts with pedestal (3).
The internal automatic forming of tubing the most according to claim 7 and self-align rolling device, it is characterised in that: inner clip
Tool (9) is monolithic construction, outer fixture (8) point half formula structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410852547.4A CN104646998B (en) | 2014-12-31 | 2014-12-31 | The internal automatic forming of self-priming bulging device, tubing and self-align rolling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410852547.4A CN104646998B (en) | 2014-12-31 | 2014-12-31 | The internal automatic forming of self-priming bulging device, tubing and self-align rolling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104646998A CN104646998A (en) | 2015-05-27 |
| CN104646998B true CN104646998B (en) | 2016-11-30 |
Family
ID=53238910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410852547.4A Active CN104646998B (en) | 2014-12-31 | 2014-12-31 | The internal automatic forming of self-priming bulging device, tubing and self-align rolling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104646998B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239032A (en) * | 2016-08-25 | 2016-12-21 | 广州本图机械有限公司 | A kind of centerless external cylindrical rolling mechanism |
| CN108145024B (en) * | 2017-12-29 | 2024-01-26 | 宁波市精恒凯翔机械有限公司 | Positionable internal expansion type rolling tool |
| CN108941341B (en) * | 2018-08-28 | 2024-01-16 | 航珍航空技术（上海）有限公司 | Non-flaring catheter internal rotation extrusion molding machine |
| CN108941342A (en) * | 2018-08-28 | 2018-12-07 | 航珍航空技术（上海）有限公司 | A kind of inward turning single lead screw ex truding briquetting machine |
| CN108971363A (en) * | 2018-08-28 | 2018-12-11 | 航珍航空技术（上海）有限公司 | Expander and inward turning single lead screw ex truding briquetting machine |
| CN108971364A (en) * | 2018-08-28 | 2018-12-11 | 航珍航空技术（上海）有限公司 | Flareless inward turning single lead screw ex truding briquetting machine and its expander |
| CN111346979A (en) * | 2018-12-21 | 2020-06-30 | 宜宾三江机械有限责任公司 | Flaring-free guide pipe rolling connection device and method |
| CN113857324B (en) * | 2021-11-01 | 2024-01-12 | 河北科技大学 | Conduit joint spinning connecting device |
| CN114274080A (en) * | 2022-01-05 | 2022-04-05 | 中国航空制造技术研究院 | Bulging device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391777A1 (en) * | 1989-04-04 | 1990-10-10 | Framatome | Method and device for removing a plug from a steam generator tube |
| CN2234329Y (en) * | 1995-07-18 | 1996-09-04 | 章新生 | Mechanical rolling device for production of dual metal pipe |
| CN1806958A (en) * | 2005-12-31 | 2006-07-26 | 浙江工业大学 | Composite device and method for preparation of bimetal composite tube |
| CN1943907A (en) * | 2006-11-02 | 2007-04-11 | 李国鳌 | Double screw hot rolling composite device and its composite process for bimetal pipe |
| CN202343782U (en) * | 2011-12-14 | 2012-07-25 | 中国广东核电集团有限公司 | Tube expander for heat exchanger and tube plate of nuclear power station |
| CN203459488U (en) * | 2013-02-28 | 2014-03-05 | 太原科技大学 | Roller forming device of pipe inner wall annular groove |
-
2014
- 2014-12-31 CN CN201410852547.4A patent/CN104646998B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391777A1 (en) * | 1989-04-04 | 1990-10-10 | Framatome | Method and device for removing a plug from a steam generator tube |
| CN2234329Y (en) * | 1995-07-18 | 1996-09-04 | 章新生 | Mechanical rolling device for production of dual metal pipe |
| CN1806958A (en) * | 2005-12-31 | 2006-07-26 | 浙江工业大学 | Composite device and method for preparation of bimetal composite tube |
| CN1943907A (en) * | 2006-11-02 | 2007-04-11 | 李国鳌 | Double screw hot rolling composite device and its composite process for bimetal pipe |
| CN202343782U (en) * | 2011-12-14 | 2012-07-25 | 中国广东核电集团有限公司 | Tube expander for heat exchanger and tube plate of nuclear power station |
| CN203459488U (en) * | 2013-02-28 | 2014-03-05 | 太原科技大学 | Roller forming device of pipe inner wall annular groove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104646998A (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104646998B (en) | The internal automatic forming of self-priming bulging device, tubing and self-align rolling device | |
| US2388179A (en) | Pipe coupling | |
| CN111266861B (en) | Assembly fixture of low-pressure turbine of engine | |
| CN204603354U (en) | Thin-walled fixture for processing excircle of barrel-shaped parts | |
| TW201511857A (en) | Pipe element having shoulder, groove and bead and methods and apparatus for manufacture thereof | |
| US11364529B2 (en) | Variable-diameter full-support mandrel structure with slider-type cross section for preventing reverse rotation of ratchet wheel | |
| JP6732273B2 (en) | Pipe male screw rolling processing method, rolling head, equipment, module and pipe male screw production line and its products | |
| CN102294664A (en) | Clamp for inner support sleeve | |
| CN100369693C (en) | Composite device and method for preparation of bimetal composite tube | |
| CN101367090A (en) | Rear chuck mechanism for cold pilger mill | |
| CN107299968B (en) | Fish shaped line speed reducer | |
| US9726211B2 (en) | 5 degrees of freedom alignment-correcting preloaded bearing connection system | |
| CN109332739A (en) | A kind of hydraulic ringfeder tooling | |
| CN105382280A (en) | Automatic changing-and-locking workpiece-moving-type lathe electric spindle | |
| CN202207909U (en) | Clamp for turning joint of corrugated pipe | |
| CN205200563U (en) | Automatic core type lathe electricity main shaft is walked in locking of reloading | |
| CN203976138U (en) | A kind of oil cylinder or cylinder as coupler | |
| CN204524442U (en) | Shaft forgings worm abrasion wheel gear grinding tooling | |
| CN2860662Y (en) | Recombination device for producing double-metal multiple-unit tube | |
| CN2466474Y (en) | Pipe joint | |
| CN107052769B (en) | Locking device of rotating assembly | |
| CN215699565U (en) | Screw thread tightening device | |
| CN205571989U (en) | Lathe part fixing device | |
| CN210889434U (en) | Fan shaft of transformer substation | |
| CN212419664U (en) | Bar fixture main shaft transmission supporting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee after: China Institute of Aeronautical Manufacturing Technology Address before: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee before: Beijing Aviation Manufacturing Engineering Institute of China Aviation Industry Group Company |
|
| CP01 | Change in the name or title of a patent holder |