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Milling machine

I also have a small Taiwanese mill/drill which is a bit short on rigidity but is quite capable of doing good work when you take care.

One day I needed to mill some clearance recesses in the bell housing of a marine engine but the mill had insufficient throat at table height because the base of the column (shown in the bottom pic) limited the space available. By elevating the workpiece above the column base I just had enough room. It looks pretty crude but it did the job,

And another fudge

Yet another fudge

I'm a member of the local community composting group which bought a used 35hp diesel engined shredder. The main rotor, which carries the hammers, is driven from the motor by 3 B-section belts. The rotor pulley was out of true when we got it and the end had been welded to the shaft! It soon gave up and, after grinding off the weld, the pulley more-or-less dropped off. The old pulley turned out to be a taperlock where the grub screws had also been welded over. The shaft was well graunched and had been 30mm. There was enough left to turn it down to 28mm (being the next size down in standard taperlock bushes).
The rotor and shaft were an all welded construction and would have needed a 24' swing lathe to turn the shaft down. It would have been an absolute bugger to get out of the housing so I decided to try machining it in situ.
I borrowed a mag base drill which had a very nice slide action, fixed an angle grinder to the slide and made a baseplate for it to clamp to. It worked remarkably well - with careful adjustment I was able to get the whole length to better than +/- 0.02mm - but there was no way I could think of for machining a new keyway. The Fenner data gave the slipping torque as about ten times the maximum steady driving torque so I decided to fit the pulley without a key but used Loctite 638 between the shaft and bore of the bush.
It's run for quite a long time since then without any indication of slipping.



Name of Machine: Colchester Triumph 2000
YOM:
Stock Number: lu/0149
Colchester Triumph 2000 x 50” Gap Bed ready for a powered demonstration in our Bristol showroom.
Specification:
15' x 50' GAP BED CENTRE LATHE
2' Spindle Bore
16 Speeds 25 - 2000 rpm
Quick change tool post & Holders
3 Jaw Chuck
Low Volt Light
Coolant
Chuck & Splash Guards
Fitted with new 2 Axis DRO
Condition:
Used
Location
Fishponds, Bristol
Price:
POA
Shipping Details:
A VAT invoice will be supplied within 48 hours of the sale end date. Delivery off loading and siting are all available with this machine at extra cost.
Enquireor call for details: 0117 965 2706

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