stoneaxe
Stainless
- Joined
- Mar 2, 2010
- Location
- pacific northwest
The peasants are rioting! Dr. Van Normanstein has brought the monster to life!
The VN 12 has stirred from it's long sleep, spindle , feed and coolant motors all work, gearboxes have no weird noises, table feed works, so it it getting very close to operation.
The spindle has a very, very light low frequency vibration, either transmitted through the gearbox, or the bevel gear, or more likely the spindle bearings- I think this because the vibration is not uniformly cyclical, it is a bit erratic, not tied to rpm on a one for one basis. this is only evident when a hand is placed on the cutter head, the spindle runout on the OD of Chinese endmill holder is a half thou - so I will watch and see.
The stop- start contactor has some mechanical problem, the solenoid gets energized but the mechanism is too sticky and rough to allow it to throw the lever arm in and out. , I will need to take this apart and look at it. The machine runs ok using the FWD STOP REV switch to control it.
The feed chain needs to be tightened, as the chain jumps teeth when it is set for a high feed rate, I should probably install the new (er) sprocket- but I need to bore and broach it-it has a 1/2" ID with no keyway, just a set screw. The feed motor and original sprocket on the machine has a 5/8" shaft with a keyway. This is evidently a later model than my replacement sprocket. Hard to imagine a non keyed sprocket standing up to that sort of service.
I will post pics of the two different sprockets later, as I am busy right now with an angry mob outside the castle doors. "Igor! Bring the oil!".
The VN 12 has stirred from it's long sleep, spindle , feed and coolant motors all work, gearboxes have no weird noises, table feed works, so it it getting very close to operation.
The spindle has a very, very light low frequency vibration, either transmitted through the gearbox, or the bevel gear, or more likely the spindle bearings- I think this because the vibration is not uniformly cyclical, it is a bit erratic, not tied to rpm on a one for one basis. this is only evident when a hand is placed on the cutter head, the spindle runout on the OD of Chinese endmill holder is a half thou - so I will watch and see.
The stop- start contactor has some mechanical problem, the solenoid gets energized but the mechanism is too sticky and rough to allow it to throw the lever arm in and out. , I will need to take this apart and look at it. The machine runs ok using the FWD STOP REV switch to control it.
The feed chain needs to be tightened, as the chain jumps teeth when it is set for a high feed rate, I should probably install the new (er) sprocket- but I need to bore and broach it-it has a 1/2" ID with no keyway, just a set screw. The feed motor and original sprocket on the machine has a 5/8" shaft with a keyway. This is evidently a later model than my replacement sprocket. Hard to imagine a non keyed sprocket standing up to that sort of service.
I will post pics of the two different sprockets later, as I am busy right now with an angry mob outside the castle doors. "Igor! Bring the oil!".