EP2488326A1 - Adjustable bracket in fixtures - Google Patents
Adjustable bracket in fixturesInfo
- Publication number
- EP2488326A1 EP2488326A1 EP10823681A EP10823681A EP2488326A1 EP 2488326 A1 EP2488326 A1 EP 2488326A1 EP 10823681 A EP10823681 A EP 10823681A EP 10823681 A EP10823681 A EP 10823681A EP 2488326 A1 EP2488326 A1 EP 2488326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- top plate
- adjustment
- adjustment means
- bottom plate
- bracket according
- 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.)
- Withdrawn
Links
- 230000005484 gravity Effects 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/10—Manufacturing or assembling aircraft, e.g. jigs therefor
-
- 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
- B23P19/04—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 assembling or disassembling parts
Definitions
- the invention concerns an adjustable bracket for position adjustment of supporting points in flexible fixtures for instance intended for assembly of aeroplanes and other complex products.
- fixtures are used to maintain the different parts of the product in position during the assembly process.
- These fixtures are normally specially designed to fit the geometry of the specific product. They comprise, in typical cases, a welded substructure holding a number of support and localizing devices, so called adapter units or fixing means in specific positions.
- the adapter units are intended to be in contact with the products and must therefore be mounted in the sub structure with great accuracy. Since the substructure normally has a low dimensional accuracy particularly lined in and ground in inserts, so called shims are between the adapter units and their fastening surfaces in the sub structure.
- the adapter units are then locked against lateral movements in the lined in positions by punching pins of steel into holes that have been drilled jointly through the parting line between the adapter units and the substructure, so called pinning.
- a new type of fixtures, flexible fixtures instead uses substructures of steel or aluminum profiles joined by releasable joints, for instance in accordance with The Swedish patent 524 073. In this way the substructure may when needed be adapted or rebuilt, for use at any one of several different products.
- the substructure has in these fixtures special adjustable fastening means mounted, that in turn support the adapter units.
- the fastening means may guided by measured values from a measuring instrument such as "Lasertracker” and by means of adjusting screws be so adjusted that chosen positions for the adaptors can be obtained within a range of adjustment.
- a measuring instrument such as "Lasertracker”
- the moveable parts in the adjustable brackets are locked for instance with hydraulic or mechanical couplings, at which the different adapter units are fixed to their positions, ref. 1.
- adjustable brackets in flexible fixtures are space requiring. For instance hexapodes, that have been used for this purpose, have a building height of almost one meter, ref 2. They do not then provide accessibility for humans and tools that in many cases is desired.
- adjustable brackets of present types are composed of moveable parts that for their function must show a play between them. Due to this the positional accuracy of the pick up units will not be as good as sometimes is desired.
- present adjustable brackets must have very generous proportioning to obtain the stiffness and strength that is required to withstand the process forces at mounting of the product. The costs of the fixtures will then not be as low as desired.
- the adjustable bracket principle make a very compact design possible.
- the mentioned space problem is essentially solvedFurthermore it has a locking device that compress all plays in the moveable parts of the bracket. In this way the final position at adjustment will be very stable and precise.
- the locking device in the bracket contribute to reinforced stiffness and strength in the adjusted position, which give the possibility of handling also high process forces at the mounting of products.
- the invented bracket has a smaller adjustment range than present adjustment brackets in corresponding applications, for instance said hexapodes.
- This restriction is circumvented by instead adapting the rebuildable substructure in the fixture to give the brackets locations that allow adjustment of the adapter units to the correct position within the adjustment range.
- Fig. 1 illustrates the use of a recommended type of the adjustable bracket.
- Fig. 2 depicts the adjustable bracket separately and more clearly.
- Fig. 3, 4, 5 and 6 show cross-sections of the recommended shape of the adjustable bracket.
- Fig. 7 depicts a version of the bracket where the locking device for the adjusted position of the bracket is unchanged, but where the device for its adjustment is in the shape of a parallel-kinematic mechanism.
- Fig. 8 shows a version of the adjustable support, where once again the locking device for the adjustment of the bracket is unchanged, but where the device for its adjustment is a link mechanism.
- Fig. 9 shows the link mechanism for adjustment more clearly.
- Fig. 10 shows a version of the bracket where the vertical adjustment is by means of spherical nuts in the locking device of the bracket.
- FIG. 1 In fig. 1 is in detail illustrated how a product 1 that is to be mounted is held in position by an adapter unit 2 that in turn is secured in the top plate in the adjustable bracket 3.
- the top plate 4 in the bracket can be adjusted a few millimeters in the three coordinate directions and a few degrees in the three angular directions relative the bottom plate 5.
- the bottom plate 5 is in turn with the bolts 6 tightened to the beam 7 that is a part of the substructure of the fixture.
- the bracket is shown separately in its recommended embodiment and how the top plate can be adjusted in the six degrees of freedom in the room.
- the three adjustments screws 8 are used to adjust the top plate vertically and in two angular directions. These screws 8 and also the other screws in the construction are of so called ball-top type , that is they have a turnable ball with a flat side at its tip. The adjustments screw will in this way get a good contact against the counter surface also at some angular deviation.
- the fourth adjustment screw 9 in the top plate is used to achieve additional contact against the bottom plate and provide better stability.
- the two adjustment screws 10 act from the side against a protruding part 12 of the top plate, said part extends down through the recess 13 in the bottom plate and has a play relative the walls of the recess.
- the top plate is displaced laterally and an associated angle.
- the likewise laterally directed adjustment screw 11 provides displacement in the third longitudinal axis. To each one of the laterally directed adjustment screws also corresponding counter screws belong.
- the corner bolts 15 are used for locking of the top plate 4 and are stationary mounted in the bottom plate 5. These bolts are in typical cases the same bolts that are numbered 6 in fig 1.
- the corner bolts 15 serve at the same time as fastening against the substructure in the fixture. They pass through holes 16 in the top plate, said holes being over-sized relative the diameter of the bolts. In this way lateral adjustment of the top plate is made possible without the corner bolts 15 being in the way.
- the nuts 17 are used to lock the top plate when the adjustment of the top plate has been executed. The axial forces from these nuts are then transferred via a package of spherical washers 18 to the surface of the top plate 19. In this way friction develop between the washers in the packet and the surface 19 on the top plate, which secure that the adjusted position is maintained. Increased friction also arise between adjustment screws 8 and 9 of the top plate in their contact with the bottom plate.
- FIG. 7 Another version of the invented construction, that may be of advantage as to precision, has instead of adjustment screws an adjustment device based on a parallel cinematic mechanism.
- a parallel cinematic mechanism holds a top plate in a statically controlled position by six articulated legs cooperating in the holding of a common top plate.
- the adjustable bracket at the used parallel cinematic mechanism is illustrated in fig. 7.
- the articulated link arms 21 have mutually angled mounting positions and connect the top plate 4 with the bottom plate 5.
- the link arms have in both their ends spherical bearings 22 that in their turn are fastened in pins 23. These pins are pivotable in their fastenings in top and bottom , 4 and 5 respectively and have radially an excentric offset relative their bearings 22 at the linkarms.
- the fastening points of the linkarms can be displaced to a chosen position within a movement circle.
- the top plate is in this way displaced and can be adjusted to arbitrary positions in six freedom degrees within an adjustment range.
- the top plate 4 is in this case adjusted vertically and in two angles with adjusting screws 8 and 9 in accordance with the described design in the recommended embodiment.
- the position laterally and the associated angle is adjusted with link mechanism that has turnable pins 24 and 25.
- These pins have at their lower inwards facing part eccentrically placed spherical bearings 26 that each hold a link arm 27.
- the link arms are as is apparent from the cross section in fig. 10 placed in a pocket 28 between the two plates. Two of the link arms cross the main direction of the two plates and the third one extend in this direction. Furthermore the link arms are via an additional spherical bearing 29 coupled to a pin 30, that is fastened in the bottom plate 5.
- a contracting spring 31 of rubber holds the two plates together during the adjustment process.
- the locking of the adjusted position of the top plate is also here by means of the same type as in above described embodiments, that is by means of nuts at the corner bolts 15 that press spherical washers 18 together and hold the top plate fast by compressive force and friction.
- the turnable and self-braking adjustment screws 8 and 9 contribute in this case.
- a further version of the bracket, that avoid bending tensions in the top plate at its locking, is illustrated in fig 10.
- the height position and two associated angle values of the top plate are in this version adjusted by means of from below active nuts 32, that extends towards the corner bolts 15 and that have a spherical surface fitting against spherical washers 18.
- Rubber springs 20 holds the parts of the bracket together during the adjustment process, and can, as illustrated in fig 1 be fastened in the outer edges of of top and bottom plates respectively with bolts 33.
- Locking in adjusted position is by means of spherical nuts 32 and washers 18 that run on the corner screws 15 and can press against each other without subjecting the top plate to any bending torque.
- the bracket according to the invention can by means of external position measuring ("Lasertrack”) be adjusted very precisely to compensate for variations and deviations in the supporting structure.
- Lasertrack external position measuring
- the adjustment can be controlled by the position measuring and can be made manually or by means of programmable controllable tools or by means of a robot.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0901338A SE533630C2 (en) | 2009-10-16 | 2009-10-16 | Adjustable bracket in structures |
PCT/SE2010/000246 WO2011046482A1 (en) | 2009-10-16 | 2010-10-14 | Adjustable bracket in fixtures |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2488326A1 true EP2488326A1 (en) | 2012-08-22 |
EP2488326A4 EP2488326A4 (en) | 2017-11-01 |
Family
ID=43243955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10823681.1A Withdrawn EP2488326A4 (en) | 2009-10-16 | 2010-10-14 | Adjustable bracket in fixtures |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2488326A4 (en) |
SE (1) | SE533630C2 (en) |
WO (1) | WO2011046482A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102322775B (en) * | 2011-06-13 | 2014-04-23 | 烟台大学 | Detecting device for positional tolerance of mounting hole of bake disc |
ITTO20130224A1 (en) * | 2013-03-21 | 2014-09-22 | Alenia Aermacchi Spa | SYSTEM FOR ADJUSTING THE PROFILE OF AERONAUTICAL STRUCTURES |
CN104015048A (en) * | 2013-11-21 | 2014-09-03 | 广西鱼峰水泥股份有限公司 | Traveling vehicle small wheel locating key installation tool |
CN104097060A (en) * | 2014-07-10 | 2014-10-15 | 武汉当代核技术有限公司 | Support for adjusting position of beam line heavy type electromagnetic element of particle accelerator |
CN106180528B (en) * | 2016-08-19 | 2018-02-13 | 苏州高登威科技股份有限公司 | Mistake proofing detent mechanism |
CN106378622B (en) * | 2016-11-14 | 2018-11-23 | 山东钢铁股份有限公司 | A kind of device convenient for centering |
GB2567169A (en) * | 2017-10-04 | 2019-04-10 | Airbus Operations Ltd | Aircraft assembly locating tool |
CN108730701A (en) * | 2018-05-30 | 2018-11-02 | 苏州库迅机器人有限公司 | Universal regulating mechanism and automobile tooling |
CN110289737B (en) * | 2019-08-13 | 2024-04-19 | 南京汽轮电机集团电站设备技术服务有限公司 | Generator bearing bush protection device |
CN110842842B (en) * | 2019-11-19 | 2021-10-12 | 中国航发贵州黎阳航空动力有限公司 | Force-limiting assembly method and device for components of turbofan aircraft engine lubricating oil system |
CN112706140B (en) * | 2020-12-31 | 2024-06-11 | 江苏核电有限公司 | Nuclear power station reactor heat shield storage tool and storage method thereof |
CN114290023B (en) * | 2021-12-30 | 2022-11-04 | 哈尔滨工业大学 | Six-degree-of-freedom low-stress assembly device for spacecraft |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB134242A (en) * | 1918-05-31 | 1919-11-06 | Sopwith Aviat Company Ltd | An Improved Self-gripping Device or Bracket applicable in the Construction of Aeroplanes and other Structures, in Lifting Apparatus and for other purposes. |
US6217684B1 (en) * | 1998-01-27 | 2001-04-17 | Ricoh Company, Ltd. | Method and apparatus for assembling parts |
WO1999038646A1 (en) * | 1998-02-03 | 1999-08-05 | Hexel Corporation | Systems and methods employing a rotary track for machining and manufacturing |
US6546616B2 (en) * | 2000-12-15 | 2003-04-15 | Bell Helicopter Textron Inc. | Six-axis alignment and installation tool |
SE524073C2 (en) * | 2003-06-06 | 2004-06-22 | Gilbert Ossbahr | Beam connection system, comprises fastener plates secured to beams and joined together via fixing parts |
CA2576650C (en) * | 2006-01-30 | 2015-05-05 | James L. Ebert | Fixture and method for replacing vehicle axle brake spiders |
US20080022607A1 (en) * | 2006-07-31 | 2008-01-31 | Salah Eldeib | Assembly jig and use thereof for assembling dome section panels curved in two dimensions |
DE102007015138B4 (en) * | 2007-03-29 | 2019-01-03 | Volkswagen Ag | holder |
CN100579717C (en) * | 2008-09-19 | 2010-01-13 | 浙江大学 | Self-adapting locating device with automatic follow function |
-
2009
- 2009-10-16 SE SE0901338A patent/SE533630C2/en not_active IP Right Cessation
-
2010
- 2010-10-14 EP EP10823681.1A patent/EP2488326A4/en not_active Withdrawn
- 2010-10-14 WO PCT/SE2010/000246 patent/WO2011046482A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011046482A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011046482A1 (en) | 2011-04-21 |
SE0901338A1 (en) | 2010-11-09 |
EP2488326A4 (en) | 2017-11-01 |
SE533630C2 (en) | 2010-11-09 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20120511 |
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DAX | Request for extension of the european patent (deleted) | ||
RA4 | Supplementary search report drawn up and despatched (corrected) |
Effective date: 20171002 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: B23P 19/10 20060101AFI20170926BHEP Ipc: B64F 5/00 20170101ALI20170926BHEP |
|
17Q | First examination report despatched |
Effective date: 20171023 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20180303 |