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bantam_lathe

Colchester Bantam Mk1 Lathe

Specs

Model Condor 20
Chuck mounting D1-3 camlock
Spindle taper 4MT
Tailstock taper 3MT
Leadscrew 6mm pitch
Toolpost Dickson T1

Manual

Accessories

Photo Name Notes Location
3-jaw chuck Standard for normal work Mounted on the lathe
4-jaw chuck Chuck for oddly-shaped material and/or work requiring accurate concentricity TBD
Key for 3-jaw chuck Behind the headstock
Key for camlock operation Used to operate the camlock mechanism to mount/unmount chucks Behind the headstock
Tailstock tools Various tools that mount in the tailstock On the chip tray to the right of the lathe bed
Large drill chuck & key Tailstock tool storage
Medium drill chuck Tailstock tool storage
Small drill chuck & key Tailstock tool storage
Keyless drill chuck Tailstock tool storage
Live centre Live centre for supporting long workpieces or turning between centres Tailstock tool storage

Risk Assessment (WIP)

Hazard Risk Mitigation
Trapping / Pinching Closing movements between tools, workpieces and other machine parts under power feed can present a trapping hazard. Machine users are to ensure they are well aware of their environment and other workshop users, and must disengage power feed and make the machine safe if distracted. Before starting the machine, users should ensure that both the power feed & threading lead screw are disengaged
Flying parts Workpieces (and chuck keys or tools) can be ejected violently if not held correctly The lathe should not be started until the user has confirmed the workpiece and tool is properly secured, the chuck key is removed, and the work area / machine ways are completely clear. The headstock should not be used to store parts / tools as these can fall into the spinning machinery. Self-ejecting/spring-loaded chuck keys are advised.
User injury Contact with rotating parts and hot swarf can cause cuts, abrasions and burns. Appropriate feeds and speeds should be selected to minimise stringy chips/“birdnesting”. Users should not attempt to clear chips with the machine running. Metal chips should not be handled directly: use pliers to clear nested chips, a brush to clear loose chips, and heavy gloves should be worn when clearing the chip tray by hand. NB: Gloves should not be worn whilst the machine is in operation - see below. Eye protection must be worn.
Entanglement Long hair, dangling jewellery, loose clothing or gloves can become entangled with rotating parts, dragging the user onto them. Application of cutting oil using a brush presents an entanglement risk. Loose clothing should not be worn, or should be covered with an appropriately secured apron. Long hair is to be tied back. Loose jewellery should be removed. Gloves should not be worn when the machine is in operation.
Lack of space/pushing by others Limited space can cause the user of the lathe to be pushed by other people in the space. Area surrounding the lathe should be closed of when in use.
Slips and trips Spilled cutting oil can make the area around the machine slippery. Appropriate footwear should be worn. Prompt removal of spilled cutting oil.
Electrical hazards Electrical shock due to damaged wiring. Regular PAT testing. Inspection of cables prior to use.
Fire Hot flying metal pieces igniting surrounding flammable material. Ensure surrounding area is clear of flammable material. Particular attention must be paid to nearby sawdust accumulation. Fire extinguishers are available in the vicinity of the machine.
Lone Working

Temporary list of hazards / machine health concerns

  • Entanglement with the spindle, chuck, workpiece or feed mechanism.
  • Being pushed in by other users due to lack of space.
  • Unsecured spinning things flying off - chuck key, loose work, things falling from the headstock onto the chuck.
  • Sharp/hot metal chips.
  • Entanglement in the belts/gearing behind the cover.
  • Collisions between chuck/workpiece & toolholder/cross-slide/tool.
  • Taking overly-heavy cuts and stalling the machine or breaking something.
  • Collisions due to power-feed/threading.
  • Damage to VFD from E-Stop overuse.
  • Damage to lathe gearing from starting the lathe out of gear, or adjusting gears during running.
  • Loose tool/toolholder/slides being pulled into workpiece.
  • Unintended use of power-feed/threading at startup.
  • Obstruction of brake lever.
  • Misconfiguration of VFD.
  • Oil or items on the floor causing slipping/tripping.
  • Burns - Hot tools / workpiece
  • Fire - hot oil / work / use of solvents (e.g. for marking) / machining plastics
  • Fumes - melting plastic workpieces
  • Oil spray - e.g. getting in eyes
  • Electric shock (if cables are damaged)
  • Lone working / how to get help

Log

  • 2016-10-26 - Lathe delivered
  • 2016-10-31 - Spindle oil changed (~3L) & gearbox oil filled (~1.5L). Gearbox oil was almost empty so may need to monitor/check for wear. The oil was 'Hydraulic oil ISO 32' from Westway Lubricants (sold as an equivalent to Shell Tellus 27).
bantam_lathe.txt · Last modified: 2019-06-21 12:11 by mike