From vector-space.org
Jump to navigation Jump to search

Shop Area: Metal Shop

Tool: Herdinge Lathe

Requires in-person training: Yes 

Procedure Number

UG 130-12, Rev. 0





Hardinge - Super Percision Lathe

Model HLV-H 10” Toolmaker’s Lathe 9492


  • Always wear approved safety glasses or face shield while operating the equipment.
  • Before operating equipment, remove tie, rings, watches and other jewelry, and roll sleeves up past the 
  • elbows. Remove all loose clothing and confine long hair.
  • Non-slip footwear or anti-skid floor strips are recommended.
  • Closed toe shoes are required when working in a shop area.
  • Do not wear gloves while operating the equipment.
  • Make all machine adjustments or maintenance with the machine unplugged from the power source.
  • Always power off machine when not in use.
  • Never operate with unbalanced tooling or spindle fixtures.
  • Remove all tools (wrenches, chuck keys, etc.) from spindle and machine surface before starting operations; loose items can become dangerous projectiles.
  • Use adequate work clamping; loose workpieces can become dangerous projectiles.
  • Protect your hands. Stop machine spindle and ensure machine motion has stopped before:
  • - Reaching into any part of the machine motion envelope

    - Changing tools, parts or adjusting the workpiece

    - Changing belt/pulley position

    - Clearing away chips, oil or coolant; always use a chip scraper or brush

    - Making an adjustment to part, fixture, coolant nozzle or when taking measurements

    - Removing protective shields or safeguards; never reach around a guard

  • Keep work area clear of clutter as machine motion can occur when keys are accidently pressed or objects fall on keyboard, resulting in unexpected motion.
  • Position clamping attachments clear of tool path. Be aware of workpiece cutoffs that could be cut free during operations and become dangerous projectiles.
  • Always use proper speeds, as well as depth/width of cut to prevent tool breakage.
  • Check for damaged tools/workpieces and cease operations if detected; replace before re-starting operations as these can become dangerous projectiles. Never use longer or larger tools than necessary.
  • Chips and dust from certain materials (e.g., magnesium) can be flammable. Fine dust from normally non-flammable materials may be flammable or even explosive.
  • Chips, dust, and vapors from certain materials can be toxic. Always check the Materials Safety Data Sheet (MSDS) for each material.




Spindle Control Lever:  Control Level A is the main control lever for the spindle.  When moved to the extreme left the brake is released and the main drive motor is on the “LOW” side.  When Level A is moved to the extreme right the brake is released and the main motor is on the “HIGH” side.  The center or “STOP” position stops the motor and applies the brake,

Direction Control Lever for Carriage: Control Lever B reverses direction of carriage for threading only.  Always place this lever in center position before starting the machine.

Disconnect for Gearbox: Knob C is used to connect of disconnect the gear box from the headstock spindle by means of a sliding gear. Always shut off machine before engaging or disengaging.  Turn knob clockwise to “FEED” position to disconnect gear box.

Spindle Lock Pin:  The spindle lock pin D is located at the front of the headstock.  The pin is held in the “OUT” or released position by a spring and ball plunger.  The spindle lock pin is used to hold the headstock spindle stationary when applying or removing spindle nose attachments, adjusting collet closer, tightening draw spindle or when applying and removing work from fixtures.  To engage lock pin turn spindle by hand and hold lock pin “IN” until it engages in one of the notches of the spindle assembly.  RELEASE BRAKE by setting switch A to “OFF” position.  The spindle lock pin is interlocked electrically with the main drive motor and must be withdrawn before machine will start.

Free Spindle Turning: To obtain a “free spindle” for easy turning of the spindle by hand, place operating Lever A in “STOP” position and turn brake switch A to “OFF” position.

Start and Stop Spindle: Pull out spindle lock pin D.  Lever A and lever B must be in center position.  Place knob C in “FEED” position.  Set switch B at “FORWARD”.  Put collet in spindle with correct size stock in place or use headstock center and tighten with collet closer.  Press “START” button A on front of control panel which energizes panel and is indicated by pilot light E.  The machine is ready to start.  Use main control lever A to start and stop the spindle.  Move to extreme left to start spindle and “LOW” side of motor.  Move to extreme right to start spindle on “HIGH” side of motor.  Center position shuts off the main motor and applies the brake.

To make the spindle go “FASTER” push the top button until the speed indicator shows desired speed and then remove finger from button.  To make spindle go “SLOWER” push lower button.

The speed indicator moves up or down to indicate in the left column speed for the “LOW” side of the motor and in the right column for the “HIGH” side of the motor.

Control Panel:  “START” button A controls main contactor to energize switch control panel.  Push “STOP” button C when finished using lathe.  Switch B is “Forward-Reverse” for spindle.  Switch A releases brake when set at “OFF” to give “free spindle”.

When set a “BRAKE” the brake automatically goes “ON” or “OFF” when using control lever A.  Coolant switch B should be at “OFF” unless using coolant supply.

Spindle Driving Unit:  The driving unit provides infinitely variable spindle speeds from 125 to 3,000 RPM by push button control.  Speed changes can be made while the tool is actually “under cut” with the operator watching the chip and tool to obtain fastest chip removal and longest tool life.

Push button controlled motor A is a reversing motor and actuates speed changing screw B which in turn raises or lowers frame C.  Frame C carries the countershaft pulley assembly D.