| 摘要 |
A method for centralising and retaining a moulded end coil ( 20 ) in a magnet former ( 12 ) which includes an oversleeve ( 24 ) for retaining the end coil in position, the radially outer (A 2 ) surface of the end coil being of lesser diameter than the radially inner surface of the oversleeve. The method comprises the steps of: (a) centralising the end coil ( 20 ) on the former ( 12 ) by passing a spigot ( 28 ) through the bore of the end coil and into the end of the bore of the former to locate the end coil within the oversleeve and to leave a gap ( 30 ) between the radially outer surface of the end coil and the oversleeve; (b) retaining the end coil in position against an axially adjacent surface of the former by applying an axial force to the end coil in the direction of the former; (c) filling the gap with a hardening material ( 42 ) along at least part of its axial length; (d) causing or allowing the hardening material to harden, thereby to securely and accurately retain the end coil onto the former; and (e) removing the spigot.
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