Bridgeport Manual Milling Machine

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Link to: Machine Shop Main Page

Warning Safety glasses Eye protection required!



Bridgeport Milling Machine
The Bridgeport mill in the Asylum Machine Shop
General Info
Make Bridgeport
Model
Serial
Specs
Manual
Asylum Info
Location Machine Shop
Rubric N/A
Training
Testing Tool testing
Restrictions red

See the Milling Machines category for notes on using all 3-Axis Milling Machines


Safety

Link to: Safety notes on the Milling Machine Category page

Speed Adjustment

Tortoise and hare
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, so the power switch (top left) also has two positions.

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.