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Brass that should be free-cutting and is tearing Solved
C360 is what we ordered. The chip is long and the finish tears on a form tool. Leaded brass usually breaks ch…
Materials · Zoryra Forum · Lead · 3 replies · 1 view ·
17-4 H900 that eats inserts on a light finish Solved
17-4 in H900, light finish pass, the insert edge is gone in a few parts. Roughing in the annealed state was f…
Materials · Zoryra Forum · Lead · 3 replies · 1 view ·
Delrin that grows after machining and fails a pin gauge the next day
A Delrin bushing bores to the pin at 4 pm and the pin will not enter at 8 am. The shop is not hotter. The par…
Materials · Zoryra Forum · Lead · 3 replies · 1 view ·
304 stainless work hardening on a drill that was fine yesterday Solved
A 8 mm drill in 304 made forty holes, then squeals and the holes go undersize. The point still looks sharp. W…
Materials · Zoryra Forum · Lead · 3 replies · 1 view ·
6061 that machines gummy from one bar and clean from the next Solved
Two bars of 6061-T6 from the same nominal spec. One makes bright chips. The other smears, loads the tool, and…
Materials · Zoryra Forum · Lead · 3 replies · 1 view ·
Spindle drawbar that will not release a holder when hot Solved
Cold, the tool changer unclamps fine. After two hours the unclamp fails until the spindle sits for twenty min…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Coolant tank magnet full, and the pump is starving Solved
The tank has a magnet rake for cast iron. After two days the pump cavitates. The rake is a solid brick of fin…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Bar feeder that pushes the collet open
A magazine bar feeder sometimes pushes so hard the collet clicks open and the bar walks. The remnant is short…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Fixture plate that rocks on a clean table Solved
A ground fixture plate rocks on the machine table. Both faces were wiped. A 0.02 mm shim slides under one cor…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Air-oil mist that is not reaching the spindle bearings Solved
The spindle mist unit's sight glass moves, but the spindle housing is hot at the nose after an hour of 10,000…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Pallet that clamps differently at the dock end of the machine Solved
A two-pallet horizontal repeats on pallet A and varies by 0.03 mm on pallet B in the morning. Both pallets we…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Collet closer on a lathe marking the bar Solved
A 20 mm ground bar comes out of the collet closer with ring marks every time we feed it. The collet is the si…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Glass scale versus encoder after a hard stop
After an emergency stop in X, the machine position and the glass scale disagree by 0.2 mm. Homing makes the c…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Flood coolant foaming only when through-spindle is on Solved
Flood from the nozzles is calm. When we turn on through-spindle the tank foams over in about ten minutes. Con…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Tool changer that drops a holder once a week Solved
A side-mount changer on a 3-axis mill drops a holder onto the table about once a week, always during a swap a…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Tailstock that leaves a center pip and a taper Solved
A 400 mm shaft between centers turns 0.04 mm taper, big at the tailstock, and the end has a pip the live cent…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Chip conveyor that stalls when the steel job starts Solved
The conveyor runs all week on aluminum and stalls within an hour on 4140 chips. The motor hums. The chute is…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Probe that triggers early only on the afternoon shift
A spindle probe sets G54 from a bore. Mornings match the bore mic. Afternoons the offset walks about 0.03 mm…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Hydraulic chuck that will not repeat on a thin ring Solved
A 2 mm wall ring in the hydraulic chuck runs out 0.05 after you unclamp and clamp again. A solid slug in the…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
Way cover packed with chips so the axis loads up Solved
X on a vertical mill starts alarm on torque after lunch. The way cover on the right is full of fine chips and…
Machines · Zoryra Forum · Lead · 3 replies · 1 view ·
