Drawbar
Smudge | 16/05/2023 12:21:56 |
![]() 18 forum posts | Hi All I have got a Mk1 Dore Westbury Milling machine. It doesn't have a drawbar. Firstly does anyone have one for sale. Or could someone make a drawing of it's dimensions. I can then make one.
Thanks in advance.
Stay safe
Dougie Smith |
peak4 | 16/05/2023 12:53:02 |
![]() 2207 forum posts 210 photos | Probably easier to make one yourself; just make sure the threads at each end are truly square to the bar. Edited By peak4 on 16/05/2023 12:58:05 |
Smudge | 16/05/2023 13:28:05 |
![]() 18 forum posts | Hi Bill thanks for your reply. I will have a go at making one, am I right that tapping on the top to break the morse taper |
Brian Wood | 16/05/2023 13:48:05 |
2742 forum posts 39 photos | Hello Smudge, I made a knock out bar with a brass business end and weighted lump on the pulley end to release Morse tapers rather than impacting threaded draw bars. My DW is a Mk II with 3 MT taper socket and this arrangement has worked successfully since I built the machine > 30 years ago. Regards Brian |
not done it yet | 16/05/2023 15:05:02 |
7517 forum posts 20 photos | I use couple of wedges, one from each side, to loosen the MT, if a light tap (with a white- or yellow-metal mallet) does not free it off. Wedges are strung together to prevent droppage and it only needs the drawbar to be loosened, so the cutter and holder cannot drop out completely until under-control removal. |
Philip Rowe | 16/05/2023 16:16:12 |
248 forum posts 33 photos | Unfortunately the MKl D/W only has a 5/16" clearance hole through the spindle, not sure about the MKll machine. So using standard 3/8" or 10mm drawbar and accessories won't work. I overcame this annoyance on my D/W by making adapter pieces that are threaded 3/8" Whit on the male end and tapped 5/16" on the other end. These were permanently attached to the collet, drill chuck morse taper etc with screwlock. The top end of the drawbar was threaded 5/16" to take a nut and washer that acts against the top of the spindle. To release l give the drawbar a smart blow with a lead hammer. Has worked for me these last 40 years since I constructed the machine. Phil |
peak4 | 16/05/2023 18:52:43 |
![]() 2207 forum posts 210 photos | Posted by Philip Rowe on 16/05/2023 16:16:12:
Unfortunately the MKl D/W only has a 5/16" clearance hole through the spindle, not sure about the MKll machine. So using standard 3/8" or 10mm drawbar and accessories won't work. I overcame this annoyance on my D/W by making adapter pieces that are threaded 3/8" Whit on the male end and tapped 5/16" on the other end. These were permanently attached to the collet, drill chuck morse taper etc with screwlock. The top end of the drawbar was threaded 5/16" to take a nut and washer that acts against the top of the spindle. To release l give the drawbar a smart blow with a lead hammer. Has worked for me these last 40 years since I constructed the machine. Phil Yes, I must drink more coffee before I post in the mornings. Edited By peak4 on 16/05/2023 19:09:29 |
peak4 | 16/05/2023 19:29:59 |
![]() 2207 forum posts 210 photos | Sorry not quick enough to edit post, so see added photo here Bill |
Smudge | 16/05/2023 19:36:02 |
![]() 18 forum posts | Hi Bill
Thanks Bill
you are a gentleman and a scholar, the photo is very helpful. I will have a try at making one.
all the best take care |
peak4 | 16/05/2023 19:57:44 |
![]() 2207 forum posts 210 photos | Posted by Smudge on 16/05/2023 19:36:02:
Hi Bill Thanks Bill you are a gentleman and a scholar, the photo is very helpful. I will have a try at making one. all the best take care Sorry for misleading you initially, My Centec has a captive drawbar, and this makes the arbor self ejecting when you turn it anticlockwise; it's convenient sometimes, and a pain others when I need to change the drawbar as well as the tooling. |
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