UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Test Gear and Workshop Equipment

Notices

Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

Closed Thread
 
Thread Tools
Old 24th May 2023, 2:11 pm   #1
retailer
Heptode
 
Join Date: May 2005
Location: Adelaide, South Australia
Posts: 541
Default Coil winder adjustable bobbin holder

A short while back I posted about an Aumann coil winder and mentioned I was working on an adjustable bobbin holder - I was using wooden mandrels to hold bobbins/winding tubes for transformer winding, a mandrel should be made with sufficient accuracy so the bobbin doesn't wobble about it's axis - I have a collection of wooden, mandrels it is very rare to find one that will fit any new transformer that comes my way so usually a new one needs to be made each time, and with enough accuracy so the bobbin doesn't wobble on it's axis.
To get around having to make the mandrels I came up with this adjustable bobbin/winding tube holder - machined from aluminium - similar principle to a 4 jaw chuck but with internal 'jaws'. The 'jaws' can be adjusted for width and locked in place with a clamp screw, I've made 7 sets of jaws to cope with bobbin widths from 15mm up to 55mm - 4 jaws in each set. One of the pics shows it in use on a good-sized mains transformer I just finished winding the transformer central core on this is 45mm wide - the two output transformers that go with it are monsters - nearly 3Kg of wire in each.
Attached Thumbnails
Click image for larger version

Name:	20230524_161621.jpg
Views:	118
Size:	50.5 KB
ID:	278695   Click image for larger version

Name:	20230524_161627.jpg
Views:	95
Size:	42.3 KB
ID:	278696   Click image for larger version

Name:	20230524_161633.jpg
Views:	93
Size:	39.6 KB
ID:	278697   Click image for larger version

Name:	20230524_161655.jpg
Views:	89
Size:	67.8 KB
ID:	278698   Click image for larger version

Name:	20230524_162220.jpg
Views:	78
Size:	42.8 KB
ID:	278699  

retailer is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 1:46 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.