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Smithy Midas 1220 XL User Manual

Smithy Midas 1220 XL
115 pages
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MIDAS 1220 XL
COMBINATION LATHE/MILL/DRILL
OPERATOR’S MANUAL
Updated August, 2008
170 Aprill Dr., Ann Arbor, MI, USA 48103
Toll Free 1-800-476-4849
www.smithy.com

Table of Contents

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Smithy Midas 1220 XL Specifications

General IconGeneral
BrandSmithy
ModelMidas 1220 XL
CategoryLathe
LanguageEnglish

Summary

Chapter 1 Introduction

Customer Information

Section to record machine ownership details like model, serial number, and purchase dates.

Chapter 2 Safety

Chapter 3 Knowing Your Machine

Chapter 4 Caring For Your Machine

Chapter 5 Basic Parts of the MI-1220 XL

Chapter 6 Uncrating and Setting Up The MI-1220 XL

Moving the Machine

Guidance on safely transporting the machine tool to its location.

Uncrating and Positioning the Machine

Instructions for removing the machine from its crate and placing it.

Millhead Removal

Steps to remove the millhead and column from the lathe head.

Tailstock Removal

Procedure for loosening and removing the tailstock from the bed.

Three-Jaw Chuck Removal

Instructions for removing the three-jaw chuck from the spindle flange.

Selecting a Location for Smithy

Key considerations for choosing an appropriate workspace for the machine.

Cleaning and Lubricating the Machine

Steps for removing protective grease and applying lubricant.

Oiling the Headstock

Procedure for lubricating the headstock with oil.

Oiling the Ways

Instructions for lubricating the machine's ways with oil.

Oiling the Carriage

Lubrication steps for the carriage oil buttons.

Oiling the Tailstock

Procedure for lubricating the oil buttons on the tailstock.

Oiling the Apron

Lubrication steps for the apron oil buttons.

Oiling the Leadscrew

Lubrication instructions for the leadscrew and feed shaft.

Oiling the Compound

Lubrication steps for the compound rest.

Oiling the Mill/Drill Clutch

Procedure for lubricating the mill/drill clutch housing button.

Setting Lathe and Mill Speeds

Guide to changing belts for different lathe and mill operating speeds.

Adjusting Belt Tension

Instructions for adjusting tension on mill and idler pulley belts.

Adjusting the Gibs

How to adjust gibs for wear and proper fit for accurate cuts.

Reducing Backlash

Methods for reducing backlash in the machine's moving parts.

Running In the Machine

Procedure for the initial break-in run of the machine.

Chapter 7 Turning

Understanding Turning Speeds

Explanation of factors affecting turning speed and cutting speed.

Gear Ratios for Threading and Turning

How to select gear combinations for thread cutting and feed rates.

Chapter 8 Metalcutting Theory

Tool Sharpness in Metalcutting

Factors influencing tool performance, including sharpness and clearance.

Heat Generation in Machining

The effect of heat on tools and workpieces during cutting operations.

Chapter 9 Grinding Cutter Bits for Lathe Tools

Grinding High-Speed Steel Cutters

Goals and procedures for shaping HSS cutter bits through grinding.

Grinding Cutters for Materials Other Than Steel

Adjusting grinding angles for cast iron and other non-steel materials.

Bits for Turning and Machining Brass

Specific considerations for grinding cutters used for brass.

Special Chip Craters and Chipbreakers

Grinding features to improve chip control during cutting.

Using a Center Gauge for V-Thread Forms

How to use a center gauge to ensure accurate V-thread cutter forms.

Grinding Cutters for Acme and Special Threads

Requirements for grinding cutters for non-standard thread profiles.

Carbide-Tipped Cutters and Forms

Properties and applications of carbide cutting tools.

Chapter 10 Setting Up Lathe Tools

Setting Cutting-Tool Height

Adjusting tool height relative to the lathe center for proper cutting.

Setting Up Turning Tools

Proper positioning of turning tools relative to the workpiece centerline.

Setting Up Threading Tools

Ensuring threading tools engage the work on dead center for accuracy.

Cutoff, Thread Cutting, and Facing Tools

Proper feed and positioning for cutoff, thread cutting, and facing operations.

Boring and Inside Threading Tools

Setting up tools for internal boring and threading operations.

Chapter 11 Setting Up with Centers, Collets and Chucks

Centering Workpieces

Procedure for accurately locating the center of a workpiece.

Centering Round and Rectangular Stocks

Methods for centering round and rectangular workpieces.

Mounting Work Between Centers

Steps for securing workpieces between the headstock and tailstock centers.

Using a Clamp Dog for Workholding

How to use clamp dogs for holding various shapes of workpieces.

Using Faceplates for Workholding

The purposes and use of faceplates in work setup.

Setting Up Work on a Mandrel

Mounting workpieces on a mandrel for machining.

Using Steady Rests and Follow Rests

Support methods for long or slender workpieces to prevent misalignment.

Setting Up Work in a Chuck

General procedures for holding workpieces in lathe chucks.

Mounting Work in a Four-Jaw Chuck

Detailed steps for mounting workpieces in a four-jaw independent chuck.

Mounting Work in a Three-Jaw Chuck

Exceptions and procedures for mounting work in a three-jaw universal chuck.

Collets and Collet Attachments

Advantages and use of collet attachments for small-diameter work.

Using Toolpost Grinders

Description and applications of toolpost grinders for various machining tasks.

Chapter 12 Lathe Turning

Performing Rough Turning

Techniques for taking heavy, rough cuts to remove large amounts of stock.

Performing Finish Turning

Making light cuts to achieve final dimensions and surface finish.

Turning to Shapes

Machining workpieces to specific shapes, corners, and fillets.

Machining Square Corners

Step-by-step guide to accurately machining square corners on workpieces.

Finishing and Polishing Workpieces

Techniques for achieving smooth, polished surfaces using files or grinders.

Taper Turning Methods

Two methods for turning tapers: using the compound rest or setting over the tailstock.

Boring a Tapered Hole

Procedure for boring a hole to a specific taper angle.

Chapter 13 Lathe Facing and Knurling

Lathe Facing Operations

Techniques for facing or squaring up the ends of workpieces.

Performing Knurling Operations

How to press patterned knurls into a workpiece for grip and appearance.

Chapter 14 Changing Gears

Chapter 15 Cutting Screw Threads

Understanding Threading Terms

Definitions of key terms used in screw thread cutting.

Cutting Right-Hand Threads

Step-by-step guide for cutting right-hand screw threads.

Cutting Left-Hand Threads

Procedure for cutting left-hand screw threads, reversing direction.

Cutting Multiple Threads

Techniques for cutting multiple threads on a workpiece.

What Not To Do When Cutting Threads

Important cautions and actions to avoid during thread cutting.

Finishing Off a Threaded End

Chamfering the end of a thread for improved appearance and function.

Cutting Threads on a Taper

Setup and procedure for cutting threads on tapered surfaces.

Chapter 16 Lathe Drilling and Boring

Performing Reaming Operations

How to ream holes for accurate sizing and smooth finishes.

Performing Boring Operations

Techniques and tools for internal turning (boring) of workpieces.

Cutting Internal Threads

Procedure for cutting internal threads using lathe tools.

Cutting Special Form Internal Threads

Considerations for cutting internal threads with special shapes.

Chapter 17 Cutting Off or Parting with a Lathe

Chapter 18 Milling Operations

Chapter 19 Workholding

Mounting Work to the Milling Table

Methods for securing workpieces directly to the milling table.

Using Milling Vises

Types of vises and how to mount and use them for workholding.

Using Dividing Heads

How dividing heads hold work for precise angular indexing and gear cutting.

Using Rotary Tables

Precision worm and wheel units for cutting gears and curved slots.

Chapter 20 Holding Milling Cutters

Holding Milling Cutters with Arbors

How arbors mount milling cutters to the machine spindle.

Collets and Holders for Milling Cutters

Using spring collets and end mill holders for straight-shank cutters.

Using Adapters for Milling Cutters

Methods for mounting various cutters using adapters and drawbars.

Chapter 21 Milling Cutters

End Mill Cutters

Types and applications of end mill cutters for various milling tasks.

T-Slot Cutters

Cutters designed specifically for machining T-slots.

Keyseat Cutters

Cutters used for machining keyseats for Woodruff keys.

Shell End Mills

End mills with replaceable shells for mounting on arbors.

Face Milling Cutters

Cutters for milling large surfaces, often with inserted teeth.

Plain Milling Cutters

Cutters with peripheral teeth for milling flat surfaces.

Side Milling Cutters

Cutters with teeth on sides and periphery for milling grooves and slots.

Slitting Saws

Thin saws for narrow slotting and cut-off operations.

Angle Milling Cutters

Cutters for operations like cutting V-grooves and dovetails.

Form-Relieved Cutters

Cutters that can be sharpened without changing their curved outline.

Flycutters for Milling

Single-point toolbits for light face cuts on large surface areas.

Tool Grinding for Milling Cutters

Sharpening procedures for milling cutters to maintain cutting edge efficiency.

Chapter 22 Speeds and Feeds for Milling

Determining Milling Speeds (RPM)

How to set spindle speed based on material, cutter, and cutting speed.

Setting Milling Feed Rates

Determining feed direction (up/down milling) and feed rate.

Chapter 23 Common Milling Operations

Milling Flat Surfaces

Methods for milling flat surfaces using plane and face milling.

Cutting Bevels and Chamfers

Techniques for cutting angled edges on workpieces.

Squaring a Workpiece

Using end mills to square the ends of workpieces.

Milling a Cavity

Procedure for roughing out and finishing cavities.

Tapping for Threads

Creating threaded holes by hand using a tap.

Chapter 24 Common Adjustments

Bevel Gear Adjustment

How to adjust the bevel gears that drive the millhead.

Millhead T-Key Adjustment

Procedure for aligning and securing the millhead T-key.

Lathe/Mill Clutch Adjustment

How to adjust the gap between the clutch jaws.

Chapter 25 Troubleshooting

Troubleshooting Powerfeed and Thread Cutting

Common issues and solutions for powerfeed and thread cutting problems.

Troubleshooting Carriage and Milling Table

Solutions for issues like table not moving or movement problems.

Troubleshooting Cross-slide Backlash

Methods to eliminate excessive backlash in the cross-slide mechanism.

Troubleshooting Lathe Turning Issues

Solutions for problems like clutch drops or rough cuts during turning.

Troubleshooting Compound Backlash

Addressing excessive backlash in the compound slide.

Troubleshooting Milling Issues

Solutions for common milling problems like tool chatter.

Troubleshooting Drilling Problems

Solutions for holes off center, wandering bits, or erratic turning.

Troubleshooting Drive System Issues

Solutions for when the machine does not turn on or components fail to engage.

Chapter 26 MI-1220 XL Specifications

General Dimensions

Physical measurements of the machine, including weight and size.

Lathe Specifications

Detailed technical specifications for the lathe functions.

Mill Specifications

Detailed technical specifications for the mill functions.

Electrical Specifications

Electrical requirements and ratings for the machine's operation.

Chapter 27 Removing the Apron

Chapter 28 Changing the Lateral Drive Shaft

Chapter 29 Machine Warranty

30 Day Trial Offer

Information on the 30-day trial period and return process.

Smithy Warranty Details

Details of the warranty coverage, exclusions, and terms.

Service and Parts Information

Contact information for service, parts, telephone, and email support.

Software and Programming Consultancy Services

Information on technical consulting and programming services offered.

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