The Craftmans Shop > New from Old
The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
awemawson:
Milton, this lathe, and other ones I had (Traub, Denford Mirac, etc) , definitely rotates clockwise looking from tailstock to chuck for an M03
Seadog, the trick I was taught re handedness is imagine a pair of hands held in prayer. The tips of the fingers on the LEFT hand point right so that is a LEFT HANDED tool and vice versa - it works for me !
OK in Featurecam, using the UPPER turret, swapping the M03 and M04 around, and using inverted right handed tools for threading produces sensible code and right handed threads when asked for - but my head still hurts !
seadog:
I agree with your interpretation of handedness, it's the standard as far as I'm aware. It seemed like that might be a possibility without having to use any brain power (reducing by the day) to analyse what you'd said.
awemawson:
Milton, maybe this IS a UK thing - googling does throw up several pictures of M03 being clockwise from behind the head stock as you say. But most certainly the Beaver is the other way round as is the Denford Mirac
. . . .more oddities . . :scratch:
I suppose it follows a mill spindle where the clockwise rotation being M03 is looking down the spindle.
Also if you think of a conventional manual lathe, top of the work comes towards you for 'forwards' and away for 'reverse'
. . . I'm more confused than when I started !
PK:
I'm sure I'm telling you how to suck eggs, but I've re read your post and you didn't explicitly say that you would normally put tools in a rear turret 'facing down', ie the chip curls on the floor side of the insert, not the ceiling side. M3 is then clockwise from the rear of the chuck etc....
DICKEYBIRD:
--- Quote from: awemawson on September 05, 2018, 04:35:26 PM ---Milton, maybe this IS a UK thing - googling does throw up several pictures of M03 being clockwise from behind the head stock as you say. But most certainly the Beaver is the other way round as is the Denford Mirac
--- End quote ---
Surely Beaver didn't convince Siemens to reverse the Beaver lathe control's spindle rotation away from the world standard M3/M4/M5 conventions just for their machine?
I work with British luxury vehicles every day and have run across some really strange things (to my American way of thinking) but in the end there's usually an ah-hah! moment where the engineers' logic soaks in & it all makes sense...sorta. :scratch:
What about you John/cnc-it...what say thee about this from your Beaver experience? Another British other-side-of- the road thing? :poke:
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