Drilling Machines.docx

Drilling Machines A properly designed drift should be used to remove tapered drills or chucks from the spindle. Fixtures, machine vices or workpieces should be clamped to the table or set against stop bars. Strip material or non-ferrous material should not be drilled unless it is securely clamped or held against a stop. When the flutes of a drill become choked with swarf, the machine must be stopped before the swarf is removed. Hinged guards should be provided to completely enclose the upper part of the drill spindle, pulleys and belt drives. Operators need to be aware of the danger of leaving chuck keys in the chuck after removing or replacing a drill.