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Smithy MIDAS MI-1220 LTD User Manual

Smithy MIDAS MI-1220 LTD
133 pages
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MIDAS 1220 & 1230 LTD
Combination Lathe - Mill - Drill
OPERATOR’S MANUAL
Updated Feb. 2019
170 Aprill Dr., Ann Arbor, MI, USA 48103
1-800-476-4849
www.smithy.com

Table of Contents

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Smithy MIDAS MI-1220 LTD Specifications

General IconGeneral
ModelMIDAS MI-1220 LTD
CategoryIndustrial Equipment
Swing Over Bed12 inches
Distance Between Centers20 inches
TypeLathe
Spindle Bore1.5 inches
Voltage110V

Summary

Chapter 2: Safety

Safety

Rules and precautions for safe operation of the machine.

Chapter 5: Uncrating and Setting Up the MI-1220 LTD

Chapter 6: Turning

Chapter 8: Grinding Cutter Bits for Lathe Tools

Chapter 9: Setting Up Lathe Tools

Cutting Tool Height

Adjusting the cutting tool height for optimal performance.

Chapter 10: Setting Up with Centers, Collets and Chucks

Centering

Method for centering workpieces accurately.

Mounting Work in a Four-Jaw Independent Lathe Chuck

Steps for mounting work in a four-jaw chuck.

Mounting Work in a Three-Jaw Universal Chuck

Steps for mounting work in a three-jaw chuck.

Chapter 11: Lathe Turning

Rough Turning

Techniques for heavy, rough cuts.

Finish Turning

Methods for achieving a finished surface.

Chapter 12: Lathe Facing and Knurling

Facing Across the Chuck

Facing operations when work is held in a chuck.

Chapter 13: Cutting Off or Parting with a Lathe

Chapter 14: Lathe Drilling and Boring

Lathe Drilling

Methods for drilling holes on the lathe.

Boring

Techniques for internal turning (boring).

Cutting Internal Threads

Process for cutting internal threads.

Chapter 15: Changing Gears on Your MI-1220 LTD

Chapter 16: Cutting Threads on Your MI-1220 LTD

Cutting Right Hand Threads

Procedure for cutting right-hand threads.

Using the Threading Dial

How to use the threading dial for accurate threading.

Chapter 17: Milling

Holding Milling Cutters

Ways to hold milling cutters.

End Mill Cutters

Types and uses of end mill cutters.

Speeds and Feeds for Milling

Determining milling speeds and feeds.

Up Milling

Techniques and applications of up milling.

Down Milling

Techniques and applications of down milling.

Chapter 18: Workholding

Mounting to the Table

Securing work to the milling table.

Using a Vise

Types and mounting of milling vises.

Chapter 19: Troubleshooting

Powerfeed and Thread Cutting

Common issues with powerfeed and thread cutting.

Powerfeed does not move carriage

Troubleshooting steps for a non-moving carriage.

Cut is not smooth

Causes and solutions for rough cuts.

Thread is not smooth

Causes and solutions for rough threads.

Tool is not cutting “on thread”

Troubleshooting for incorrect thread engagement.

Carriage/Milling Table

Troubleshooting for carriage and milling table issues.

Powerfeed doesn't move table

Troubleshooting for powerfeed table issues.

Horizontal movement in cross-slide table

Issues with horizontal cross-slide movement.

Vertical movement in cross-slide table

Issues with vertical cross-slide movement.

Carriage moves smoothly in only one direction

Troubleshooting for one-directional carriage movement.

Cross-slide handwheel turns during cutting operations

Issues with the cross-slide handwheel.

Too much backlash in the cross slide

Solutions for excessive cross slide backlash.

Lathe Turning

Troubleshooting lathe turning issues.

Cut is rough

Causes and solutions for rough lathe cuts.

Work has unwanted taper

Troubleshooting for unwanted tapers.

Machine vibrates

Causes and solutions for machine vibration.

Work stops turning but machine continues to run

Diagnosing issues when work stops but machine runs.

Too much backlash in compound

Resolving compound backlash.

Tool chatters

Causes and solutions for tool chatter.

Deph of cut is not consistent

Troubleshooting inconsistent depth of cut.

Hole is off center or bit wandres

Diagnosing off-center or wandering holes.

Chapter 20: Removing the Quill and Quill Feed Assembly