WO1992016954A1 - An apparatus for supporting and orientating in a balanced fashion the mandrel on which superconducting wires of elongated shape magnetic coils are wound - Google Patents
An apparatus for supporting and orientating in a balanced fashion the mandrel on which superconducting wires of elongated shape magnetic coils are wound Download PDFInfo
- Publication number
- WO1992016954A1 WO1992016954A1 PCT/IT1992/000029 IT9200029W WO9216954A1 WO 1992016954 A1 WO1992016954 A1 WO 1992016954A1 IT 9200029 W IT9200029 W IT 9200029W WO 9216954 A1 WO9216954 A1 WO 9216954A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mandrel
- spindle
- centerline
- supporting
- orientating
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/236—Manufacture of magnetic deflecting devices for cathode-ray tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/071—Winding coils of special form
- H01F41/073—Winding onto elongate formers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/071—Winding coils of special form
- H01F2041/0711—Winding saddle or deflection coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/236—Manufacture of magnetic deflecting devices
- H01J2209/2363—Coils
- H01J2209/2366—Machines therefor, e.g. winding, forming, welding, or the like
Definitions
- This invention concerns an apparatus suitable for supporting and orientating in a balanced fashion the mandrel for winding superconducting wires in order to form elongated shape magnetic coils, in particular for dipoles and quadrupoles.
- Some apparatus are already known for automatically winding coils on a mandrel or coil supporting form, in which coils the conducting or superconducting wires lie predominantly in a longitudinal direction, parallel to the coil center line, with heads having radiuses of variable extent but in any case relatively short.
- the form or mandrel is rotatingly mounted for a back and forth motion around an axis which coincides or is parallel to the center line of the coil, within an angle of oscillation of approximately 180° total, on a stationary bedplate having slidingly mounted on a side thereof a reciprocating reel and carriage assembly from which the superconducting wire to be wound on the coil is withdrawn.
- a different drive comprising half-ring gears meshing with a drive gear and comprising three sectors among which the outer ones are pivotally connected to a center sector, whereby when the mandrel integrally fastened to said half-ring gears is vertical, the engagement between the drive gear and the half-ring gears takes place in a central area thereof at a stationary guide shaped as an arc of a circle, while when the mandrel lies in a tilted position on one side or the other a branch of each half-ring gear will have rolled downwards by rotating around a respective pivot, in order to allow the conducting wire an unhindered access to the mandrel side now facing upwards due to the mandrel tilting motion.
- an object of this invention to provide an apparatus adapted to perform as a supporting and/or handling means suitable for being mounted in a number of units at equally spaced positions along the length of the mandrel, for the purpose of reducing the bending and torsion effects while simultaneously allowing the mandrel to perform a complete 180° arc oscillation in order to reach the two horizontally opposed end positions, with no hindrances or interferences, namely from above, while the mandrel is left absolutely free in space except for the supporting bar thereof, or connecting arm between said mandrel and the apparatus.
- the above object is met by using links and positive or shift-free drive means similar to a mechanical parallelogram system. It may be assumed that for a mandrel 8 to 20 meters long a suitable number of units to be used is two-three drive and orientation apparatus and two to ten support apparatus, taking into account that the latter are substantially identical to the former, except for the missing drive means.
- all the apparatus will be provided with balancing devices based on using a pneumatic cylinder slidingly mounted on. a guide and having a piston rod providing the support for one of the pivots of said mechanical parallelogram.
- FIGURE 1 shows a schematic view of the supporting and orientation apparatus, at a mandrel horizontal position, or oscillation limit position thereof;
- FIGURE 2 shows a view similar to Figure 1, for the mandrel located in an intermediate tilted position
- FIGURE 3 shows a side view, partially in cross section, of the construction of said apparatus, taken in a plane perpendicular to that of the above Figures;
- FIGURE 4 shows another schematic of the apparatus, similar to Figure 1, including a balancing device.
- Figures 1, 2 and 4 are all schematic representations of orientating and supporting apparatus 1 according to this invention, and they are all taken in a section plane transverse to the longitudinal direction of typically U-shaped mandrel 3 suitable for winding a superconducting wire coil thereon, mounted on a longitudinal support bar 2 which is in turn fastened in at least two positions at the ends of the coil winding machine, but more preferably supported in a number of locations equally spaced along the length thereof, each time on a spindle member 31 whose axis 19 provides the back and forth oscillating pivot, according to the direction of arrow F, of the assembly comprised of mandrel 3 and bar 2.
- spindle 29 as well is connected to a third spindle 27 both by means of a transmission member 25, the latter too being positive or shift-free, and by means of a link 13.
- a transmission member 25 On spindle 29 there is in fact mounted a freely rotating pinion gear 32 integral with link 14 meshed with chain or cog belt 25 whose opposite end is in meshing engagement with pinion gear 26 coaxial with said spindle 27 and fastened on the machine frame or support structure, schematically shown at 23 in the drawings. Therefore, spindle 27 takes a fixed position in space, contrary to the other two spindles 29 and 31 which, as shown in Figures 1 and 2, are displaced according to the tilting angle of mandrel 3 relative to the horizontal direction.
- the supporting apparatus which may be provided in a number of locations along the length of the mandrel.
- the orientating apparatus as they were called previously, are as well in a number of at least two, at the ends of the machine, and preferably also in a larger number, for instance with a third one at half the mandrel length, each one of them including the members already described previously for support only.
- link 13 is rotated under external drive, for instance by means of a pinion gear 33 freely rotatable around stationary spindle 27, and set in motion by a transmission member 36 (still comprising a chain or a shift-free cog belt) which is meshing engagement with a pinion gear 35 at the output shaft of a gear motor or D.C. current motor 34.
- a transmission member 36 still comprising a chain or a shift-free cog belt
- the shift-free arrangement is necessary in order to be able to positively determine the tilting angles of mandrel 3 and to provide a numerically controlled type motor 34.
- center line of structure 23 on which spindle 27 is mounted said center line being coincident with the line connecting the center line of the spindle with mandrel center line 7.
- center line 21 is kept constantly parallel to the latter, independent upon mandrel 3 tilting angle, while transverse center line 4 of said mandrel, passing through pivot center 19, is kept constantly parallel to center Line 20, by the double mechanical parallelogram system, as it is assured by transmission members 24 and 25 respectively.
- the rotations of mandrel 3 take place around the longitudinal center line 7 which is kept constantly in a stationary position in space.
- FIG 4 there is shown sche ⁇ matically therein the complete apparatus provided with the balancing device 6 whose purpose is to reduce the torsional actions within the mandrel, which may easily take place since the latter is a long member which, in some cases, may reach 20 meters of length, in the same way as support bar 2 thereof.
- a balancing device 6 is provided for all the apparatus 1, both the simply supporting and the orientating ones.
- the mandrel, and therefore the supporting and orientating apparatus 1 are shown in a limit position, completely tilted to the left, and with the transverse center line 4 in a horizontal position, and angle ⁇ equal zero.
- orientating device 1 may proceed to any one of a number of positions, going from the one shown herein to the one located 180° apart, through a rotation according to arrow F.
- mandrel 3 is non-symmetrical relative to axis 8, whereby center of gravity 9 is diplaced relative to rotation center line 7.
- Force F 1 applied at 9 generates a moment M 1 which is variable according to angle ⁇ formed by transverse center line 4 with the horizontal direction.
- the maximum value of moment M 1 tending to rotate the mandrel clockwise is generated when the latter is in a horizontal position to the right, and it progressively decreases down to zero when the mandrel is in a vertical position, and it reaches a maximum in a counterclockwise direction when the mandrel is in a horizontal position to the Left.
- the purpose of balancing device 6 is to balance said moment M 1 with an equal and opposite moment M 2 .
- It includes a pneumatic cylinder 10 whose piston rod is fastened to the pivot point between Link 13 and Link 14, in practice at the position of center line 12 of spindle 29, while body 15 of the cylinder is mounted on a sledge basis 16, adapted to slide on a guide 17.
- Compressed air supply A is in communication with the lower chamber of cylinder 15, underlying piston 11a, through a valve 18 which provides a constant pressure of the air supplied while the volume of said Lower chamber changes.
- Force F 2 generated by cylinder 10 is applied to pivot point 12 in a direction constantly normal to guide 17, so that a moment M 2 is generated relative to link arm 13. If the legth of Link 13, i.e.
- the setting of valve 18 will be controlled in such a way that, while winding the coil, account is taken of the increasing weight of the conducting wire on mandrel 3. Simultaneously, cylinder 10 will slide back and forth on guide 17 in order to keep piston rod 11 vertically in contact with pivot 12.
- Numerically controlled motor 34 rotates pinion gear 35 at a predetermined speed and for set periods of time, said pinion gear causing a corresponding rotation of pinion gear 33 and therefore, through link 13, spindle 29 is rotated in space along a corre ⁇ sponding arc of a circle while pinion gear 32 as well is rotated around its axis by transmission 25.
- link 14 as well is rotated around pivot 12, together with pinion gear 28 integrally fastened to link 13, which pinion gear caused rotation of pinion gear 30 mounted on spindle 31, through transmission means 24.
- a balancing device for each apparatus, either supporting only or generating a simultaneous orientating action, there is provided a balancing device, as described above, which by independently moving while the position in space of spindle 29 changes, in order to keep the orthogonality of force F 2 generated in an upwards direction by piston rod 11, in every moment cancels, with an equal and opposite moment M 2 the moment M 1 caused by the mandrel eccentricity.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Wire Processing (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI910680A IT1245193B (en) | 1991-03-14 | 1991-03-14 | EQUIPMENT FOR SUPPORTING AND ORIENTING IN A BALANCED WAY THE SPINDLE ON WHICH WINDING SUPERCONDUCTORS OF MAGNETIC COILS WITH ELONGATED SHAPE |
ITMI91A000680 | 1991-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992016954A1 true WO1992016954A1 (en) | 1992-10-01 |
Family
ID=11359039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT1992/000029 WO1992016954A1 (en) | 1991-03-14 | 1992-03-13 | An apparatus for supporting and orientating in a balanced fashion the mandrel on which superconducting wires of elongated shape magnetic coils are wound |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0575455A1 (en) |
IT (1) | IT1245193B (en) |
WO (1) | WO1992016954A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2528530A1 (en) * | 1975-06-26 | 1977-01-20 | Kernforschung Gmbh Ges Fuer | Winding machine for saddle coils - has revolving table rotating about vertical axis and has moving winding mandrel |
EP0278924A1 (en) * | 1987-02-09 | 1988-08-17 | EZIO SELVA S.r.l. | Automatic apparatus for shaping windings for coils particularly suitable to dipole or quadrupole magnets |
EP0389442A2 (en) * | 1989-03-22 | 1990-09-26 | EZIO SELVA S.r.l. | Improved apparatus for automatically shaping windings for extremely elongated coils, in particular to form dipole or quadrupole magnets |
EP0401039A2 (en) * | 1989-06-01 | 1990-12-05 | Westinghouse Electric Corporation | Apparatus for making a superconducting magnet for particle accelerators |
-
1991
- 1991-03-14 IT ITMI910680A patent/IT1245193B/en active IP Right Grant
-
1992
- 1992-03-13 WO PCT/IT1992/000029 patent/WO1992016954A1/en not_active Application Discontinuation
- 1992-03-13 EP EP92907176A patent/EP0575455A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2528530A1 (en) * | 1975-06-26 | 1977-01-20 | Kernforschung Gmbh Ges Fuer | Winding machine for saddle coils - has revolving table rotating about vertical axis and has moving winding mandrel |
EP0278924A1 (en) * | 1987-02-09 | 1988-08-17 | EZIO SELVA S.r.l. | Automatic apparatus for shaping windings for coils particularly suitable to dipole or quadrupole magnets |
EP0389442A2 (en) * | 1989-03-22 | 1990-09-26 | EZIO SELVA S.r.l. | Improved apparatus for automatically shaping windings for extremely elongated coils, in particular to form dipole or quadrupole magnets |
EP0401039A2 (en) * | 1989-06-01 | 1990-12-05 | Westinghouse Electric Corporation | Apparatus for making a superconducting magnet for particle accelerators |
Also Published As
Publication number | Publication date |
---|---|
ITMI910680A1 (en) | 1992-09-14 |
IT1245193B (en) | 1994-09-13 |
EP0575455A1 (en) | 1993-12-29 |
ITMI910680A0 (en) | 1991-03-14 |
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