Other Lathe Operations

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Presentation transcript:

Other Lathe Operations

Drilling Boring Reaming Tapping Internal Hole Making Drilling Boring Reaming Tapping

Drilling Tailstock jacobs chuck taper shank drill

Boring Enlarge or True an existing or drilled hole

Correct boring tool position

Incorrect boring tool positions

Boring tool size

Types of boring bar operations

Internal thread relief

Long bar length creates chatter

Reaming

Reaming Accurately finish drilled or bored holes to size Held in tailstock holes drilled to .010” to .015” undersize then reamed Reaming speeds are half that for drilling Reaming feeds are twice that for drilling

Tapping Drill press larger holes less accurate

Starting Taps - Lathe smaller holes more accurate

Hand Tapping with lathe Center Drill Drill Hole (use oil) Get tap and tap wrench Disengage spindle gear NO POWER Rotate spindle by hand to start tap Move to work bench

Grooving and Parting

Knurling - uses improve appearance provide good gripping surface increase size for press fits

Knurling tools Most knurls displace metal by pressure (soft metals)

Knurling tools

Knurling Tips Use oil Hold between centers Use low speeds (as for threading) Even pressure on both rollers Don’t stop lathe while in contact

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