View source for Bridgeport Manual Milling Machine

[[Category:Tools]][[Category:Milling Machines]]
Link to:[[:Category:Machine Shop | Machine Shop Main Page]]

{{EyeWarning}}

{{ToolBox
  |tool_title         = Bridgeport Milling Machine
  |tool_subtitle      = Bridgeport Milling Machine
  |image              = Mill_Bridgeport_new.png
  |caption            = The Bridgeport mill in the Asylum Machine Shop
  |make               = Bridgeport
  |model              = 
  |serial             = 
  |manufacturer_specs =   
  |manual             =   
  |location           = Machine Shop
  |rubric			= N/A  
  |training           = 
  |testing            = [https://www.artisansasylum.com/tool-testing Tool testing]
  |restrictions       = red
  |tool_categories    = [[:Category:Milling Machines | See the Milling Machines category for notes on using all 3-Axis Milling Machines]]
}}

==Safety==
Link to:  [https://wiki.artisansasylum.com/wiki/Category:Milling_Machines#Safety_Notes Safety notes on the Milling Machine Category page]

==Speed Adjustment==

{| class="infobox" cellspacing="5" style="width: 22em; text-align: left; font-size: 100%; line-height: 1.5em;"
! colspan="2" class="infobox-image" | [[File:Mill_Bridgeport_speed_control.png|250px|Tortoise and hare]]
|-
| colspan="2" |  The speed control on the Bridgeport mill.
|-
|}

The spindle speed is adjusted manually with the crank on the right-hand face of the headstock.  '''Only adjust the spindle speed when the spindle is turning!'''

A range-control lever on the left side of the headstock switches between "Tortoise" and "Hare" speed ranges.  '''Change the position of this lever only when the spindle is stopped!''' The spindle may need to be rotated manually when changing the speed range to allow the gears to mesh.  The direction of the spindle reverses between the two modes (note the directions the two animals are facing) and the motor power switch on the left shows the two directions for "forward" rotation in each mode.

This machine has variable-speed motor drives (Not CNC) on the two axes of the table.

==Manual Draw-Bar==

This machine has manual tool-changing with a wrench.