CERN 4 th /5 th December 2012 Todays speaker Paul Allen 1
Slide 2
2 Founded in 1968 Accredited to ISO 9001-2008 working towards
ISO 14001 & OHSAS 18001 Capabilities include Toolmaking Metal
Pressings Sub- assemblies Electroplating CNC Wire Erosion CNC
Machining Busbar Manufacture Laser Cutting Employ 120 staff 15
million sales turnover Company registration 00921793
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MQXC Quadrupole Magnet Assembly Weighs 1 Tonne 2 metres high
550mm diameter Assembly took place at CERN 3
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4 Material- Hot rolled steel Component- individual yoke
Process- Laser cut and wire eroded 340 yokes per assembly Each yoke
is 550mm in diameter 5.2mm thick Wire eroded within a 20 micron
tolerance Yoke stack showing, collar assembly Yoke assembly top
plate showing superconductors
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5 Material- 3mm stainless steel Components- collars and fillers
Process- collars are Laser cut and Wire cut Filler dimples are
Pressed 2 collars and 2 fillers make a complete 260 mm diameter
collar assembly
7 We have the latest wire erosion technology. Laser cut collars
are wire cut finished to achieve sub 10 micron accuracy.
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8 Typical inspection with the CMM H.V.Wooding and CERN staff
comparing notes Independent inspection at Rutherford Appleton
Laboratories Expanded section view of collar wire cut within 10
micron tolerance
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9 Collar Assembly Keyways aligned in a press Fitted
Superconductors visible Full compliment Collar assembly on its rig
This is inside the CERN workshop Complete assembly of Collars and
Fillers
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10 Further applications for CERN.
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11 Material- Pre-bonded electric steel Components- wire cut and
pressed Laminations. The wire cut lamination general tolerance 20
microns we achieved 4 microns 1000 laminations per stack Compound
press tool Used 0.3mm x 150mm x 400mm electric steel Welded
assembly of RCS lamination stack
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12 Material- low carbon steel 6.35mm thick, Component- Dipole
yoke collaring lamination Process- Laser & Wire cut lamination
Full collar diameter 260mm Material- steel 180mm thick x 700mm
diameter weighing 250 KG Component- HTS Quadrupole yoke Process-
Fully wire cut Note the two 5mm x 30mm slots all the way through
Built into a 6 segment assembly at Brookhaven
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13 Material-Low carbon steel & stainless steel Components-
collars and yokes Processes- Laser cutting, CNC machining and Wire
cutting Dowel pin insertion Tolerances of 7 microns in key
areas
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14 Finally, thank you very much for taking the time to listen
today, it was a real honour for us to be invited to talk. If you
have any questions please do not hesitate to ask, we will be here
for a short while and we also have an exhibition stand so feel free
to pop by over the next two days. Once again, thank you for
listening. Please visit our website on www.hvwooding.co.uk