View source for Myford lathe/Inductions Course

Early notes

Metal Working inductions

Basic Safety for all
* hackspace rules
* lone worker
* HSE
* Eye protection
* Tie long hair back
* No loose clothing



Lathe
=====
 TODO
 RFID Access
 cup/female live center
 motor indicator led
 motor breaking
 foot stop
 small 4 jaw key, re machine on mill
 dividing head clean up
 parting blade
 clean up shelves
 spare V belt
 maintenance schedule
 traveling steady

Safety
------
* No long sleeves (rolled up and secured is ok)
* Don't reach across
* Don't leave chuck key in
* make sure free moving and clear (spin by hand)
* covers closed
* never run in reverse
* dont touch the swarf (hot and sharp)
* work can be hot

Tool Description
----------------

Its an imperial machine
    Use the Zeus guide for conversion
    Diameter vs radius for cuts

bed, saddle, cross slide, top slid, quick change tool post, chucks, tail stock, tail stock locks, speed belts, back gears, belt tension, power switch, clutch, , auto feed (lever, direction and change gears), micrometer dials, tool storage (rack and below), saddle lock, tread indexer, head lock

specs

Simple usage
------------
materials
    ali
    steel
    stainless
    plastics
    brass
    copper
    NOT WOOD

pre use maintenance
    5 oil pots
        main spindle on front
        two under belt cover
        two motor bearings

mains power
    switch positions (not reverse) clutch off when starting
adjusting belt speed
    stop motor & tension off, adjusting belts, engaging back gears, tension on, clutch off, motor on
clutch
    always leave it off, right hand operation only (dont reach over work), don't slam it, engage slow and controlled (at all times)
    check chuck and work is free to rotate before engaging
    Use clutch to stop machine not power switch

chucking work, changing the chuck
    never leave the key in
    never extend chuck leverage
    3 chucks available
    3 jaw chuck, Swappable jaws
    4 jaw chuck, reversible jaws
    grip as much as possible
    centering work
    extend not more the 3x diameter for free work (use a center in tailstock if longer)

types of tools
    index carbide
        different tips, mild steel vs ali/stainless
    HSS ground
    tungsten
        brittle
    facing, turing, boring, thread cutting, parting tools
    drill bits
    knurling tool
    left hand & right hand, rake

mounting tools on the post
    quick change tools
    multiple tool holders
    adjust post angle and top slide angle
    height adjustment (methods, ruler trick, facing trick)

mounting tools in the tail stock
    lock it down first,
    extend out a little
    push with slight twist
    retract to eject
    used appropriate size drill chuck for bit

power feed
    start away from work
    H32 Oil gears
    engaging for direction
    checking speed and direction clear of work
    using the cam lever
        start away from work
    test cut depth by hand before engaging power feed
    changing gears page 101 book

cutting speeds
    look it up in the book or online
    change base on cutting tool, work material and diameter
    different speeds for drilling

use of lead screws
    hand over hand
    continues smooth cut
    backlash (5 handles)
    setting micrometer dials
    difference in tick marks on dials (cross slide is .1, top slide is .2)

Maintenance
-----------
two type of oil
pre use oil
    5 flip pots (H32 oil)

complex oiling by metalworking
    H32 nipples,
    V2 way oil,
    Check oil applicators are full
belts
gib adjust

Machining operations (practicle)
--------------------

don't expect things to be square

1" ali bar
 chuck up 3" length

Chucking up stock
    setting center
    tapping (copper hammer)
    dial test indicator

Facing
    oil during cuts
    setup and test clear of work
    correct tool, (two to chose from)
    tail stock clear
    setting tool post angle, top slide angle
    height
    lock off the saddle!
    cutting across face to clean up saw marks
    using cross slide for cut and top slide for depth of pass
    depth of cut (depends on XYZ, lookup table)

Drilling
    oil during
    setup and test clear of work
    get tool post well clear
    center drill (correct size for diameter work)
    drill out to 6mm
    step up in sizes (depends on material and depth, rule of thumb no more than 5mm step)
    pecking operation (NEVER Plunge)

Taper
    oil during
    setup and test clear of work
    change tool
    setting angle using top slide
    lock of saddle
    using top slide to advance tool
    using cross slide to adjust depth of cut

Turning
    oil during
    setting tool angle using top slide and post adjust
    using saddle for cut and cross slide for depth
    dimensioning cuts, calc diameter and cut vs ticks on micrometer dial
    cuts by hand
    final cut by power feed


how it should be left
---------------------
clutch disengaged
belt tension off first
motor stopped
quick change tools remove
empty tail stock
drills removed from chucks
chuck key returns
spanners back in place
back gears disengaged
power feed gears disengaged
clean,
    swarf sweep all down to tray then remove
    Dont wipe down ways with cloth (if you do brush oil with v2)
cutting oils to shelfs
report broken bits/tools to metalworking@

Do's and Do not
---------------
Dont touch the swarf
Close eye on tool and tool post distance form chuck
slide over hang
tool bit over hang
No milling bits in chucks
No powered tapping
Dont wipe down ways with cloth (if you do brush oil with v2)
DO NOT CUT WOOD


NOT covered
-----------
fixed steady
auto feed change gears
milling, indexing, gear cutting
grinding your own tools
parting
boring
thread cutting
hand tapping
hand threading with die
use of 4 jaw chucks
use of face plate
turning between centers