Task1. Describe the Uses of the lathe, to Include Safety.
2.Lathes Types and Uses.
(2) Bench-Type Engine Lathe.
Figure 1. Bench-Type Engine Lathe.
Figure 2. Floor- Mounted engine Lathe.
Figure 3. Sliding Gap- Type floor- Mounted Engine Lathe.
e.Special Purpose Lathes.
f.Essential Features Of the Lathe.
Figure 4. Gear- Head Engine Lathe.
Figure 5. Sliding Gear type Headstock.
Tailstock
(5) Carriage.
(6)Apron.
Figure 6. Carriage Mounted On the Bed.
(7) Feed Rod.
(8) Lead Screw.
(9) Quick-change Gear Mechanism.
Figure 7. Quick-Change GHear Box 9( Rear View).
Tool Posts.
Figure (8) Compound Rest.
Figure 9. Cutting Toolholders
3. Lathe cutting Tools
Figure 10. Boring Bar Cutting Toolholder
Tantalum carbide and Titanium Carbide
figure 11 Terms Applied to Single Point Cutter Bits
e. Common Types of Cutter Bits.
Table 1. Clearance and Rake Angels for Lathe Cutter Bits
Figure 12. Common Types of Cutter Bits
Special Types Of Lathe Cutting Tools
Figure 13. Special Types of Lathe Cutting Tools
Figure 14. Chucks Used With the Lathe
Universal Scroll Chuck.
(7) Collet Chuck
Figure 15. Spring machine Collets.
Figure 16. Jacobs Rubber -Flex Collets
(10). Lathe Tailstock Chuck.
Figure 17. Lathe Faceplates.
Lathe Dogs
Figure 18. Types of lathe centers.
e. mandrels.
Figure 20. Steady/ Cebnter Rest.
Figure 21. Follower Rest.
Figure 22. Taper Attachmernt
Figure 23. ToolPost Grinding Machine.
Safety Precautions For Lathes
Figure 24. Milling And Grinding Attachment.
General Lathe Operations and Machining
Setting Up the Lathe.
Table 2: Lathe cutting Sppeeds for Staright Turning and Threading
Cutting Speed.
Cutting Speed. (cont)
Feed.
Depth of Cut.
Types of Cutting Oils
Mineral-Lard Cutting Mixture.
Table 3. Cutting Oils for Lathe Operations
Facing Operation
Straight Turning.
Figure 25. Positiion of the Cutter Bit For facing
Figure 26. Position Of Cutter Bit for Straight Turning
Shoulder Turning Operation.
Finish Turning.
Squared Shoulder Finish.
Parting.
Taper Turning.
Figure 28. Taper Turning
Figure 29. Taper Using the compund . Using the Compoun Rest.
Compound Rest.
Taper Attachment.
Taper Attachment. - Continued - Od16450075
Taper Attachment. - Continued - Od16450076
Figure 31. Setup for Turning And Boring Tapers.
Checking Tapers for Accuracy.
Standard Tapers
Standard Tapers - Continued
Conclusion - Od16450081
Lesson 1. The Lathe Uses, and Safety; Uses, Repair and Adjustment of Lathe Attachments
Operation - Od16450083
Figure 32. Mounting The Grinderat the Center Height .
Figure 33, Position of the Diamond Dresser
Maintenance. - Od16450086
Metal Cutting Lathe Fixture
Operation. - Od16450088
Milling
Indexing
Maintenance. - Od16450091
Basic Unit.
Mounting of the Versa-Mil.
Figure 36. Milling Operations On the Lathe
Mounting on a Lathe.
Mounting On the Lathe Cross-Slide
Alignment of the Versa-Mil
Alignment With the Lathe.
Mounting and Removing Cutters from Arbors.
Figure 37. Indexing Head of the Versa - Mil Installed on the Lathe.
Lubrication and Adjustments.
Adjustments.
Lead Screw Backlash.
Adjusting the Bearings - Removing End Play.
Replacing the Oil Seals.
Conclusion - Od16450106
Task 3. Describe the various Threads forms, Uses, calculation. and Machining Techniques.
Screw Thread Terminology
Figure 39. Relation of Linear Pitch for Screw Threads.
Screw Thread Forms
Figure 40. Unified and American (National) Strandard Screw Threads.
American (National ) Standard Thread.
Figure 41. Acme. Square, and 29A Worm Screw Thread Forms.
Thread Fit And Designations.
Thread Designations
Figure 42. Thread Cutting Gages.
Figure 43. Thread Cutter Bit Square Threads
Setting Lathe Thread Cutting Mechanism for Proper Feed.
Standard-Change Gears
Simple Gear Train (figure 45).
Comound Gear Train.
Direction of Feed.
Thread Cut Tin Operations .
Figure 46. Thread Chasing Dial
Measuring External Screw Threads
Figure 47.Thread Micrometrers
Figure 48. Thread Gages
Measuring External Screw Threads.
Figure 49. Three Wire Methods Of Measuring Threads
Cutting External Acme Threads
Figure 50. Acme Thread Gage
Cutting Square Threads
Cutting Square Threads - Continued
Conclusion - Od16450134
Practical. Exercise 1
Practical Exercise 1. cont. - Od16450136
Lesson 1. Practical Exercise - Answers - Od16450137
Lesson 1. Practical Exercise - Answers - Continued - Od16450138
References
References
Lathe Operations
2.Lathes Types and Uses.
(2) Bench-Type Engine Lathe.
Figure 1. Bench-Type Engine Lathe.
Figure 2. Floor- Mounted engine Lathe.
Figure 3. Sliding Gap- Type floor- Mounted Engine Lathe.
e.Special Purpose Lathes.
f.Essential Features Of the Lathe.
Figure 4. Gear- Head Engine Lathe.
Figure 5. Sliding Gear type Headstock.
Tailstock
(5) Carriage.
(6)Apron.
Figure 6. Carriage Mounted On the Bed.
(7) Feed Rod.
(8) Lead Screw.
(9) Quick-change Gear Mechanism.
Figure 7. Quick-Change GHear Box 9( Rear View).
Tool Posts.
Figure (8) Compound Rest.
Figure 9. Cutting Toolholders
3. Lathe cutting Tools
Figure 10. Boring Bar Cutting Toolholder
Tantalum carbide and Titanium Carbide
figure 11 Terms Applied to Single Point Cutter Bits
e. Common Types of Cutter Bits.
Table 1. Clearance and Rake Angels for Lathe Cutter Bits
Figure 12. Common Types of Cutter Bits
Special Types Of Lathe Cutting Tools
Figure 13. Special Types of Lathe Cutting Tools
Figure 14. Chucks Used With the Lathe
Universal Scroll Chuck.
(7) Collet Chuck
Figure 15. Spring machine Collets.
Figure 16. Jacobs Rubber -Flex Collets
(10). Lathe Tailstock Chuck.
Figure 17. Lathe Faceplates.
Lathe Dogs
Figure 18. Types of lathe centers.
e. mandrels.
Figure 20. Steady/ Cebnter Rest.
Figure 21. Follower Rest.
Figure 22. Taper Attachmernt
Figure 23. ToolPost Grinding Machine.
Safety Precautions For Lathes
Figure 24. Milling And Grinding Attachment.
General Lathe Operations and Machining
Setting Up the Lathe.
Table 2: Lathe cutting Sppeeds for Staright Turning and Threading
Cutting Speed.
Cutting Speed. (cont)
Feed.
Depth of Cut.
Types of Cutting Oils
Mineral-Lard Cutting Mixture.
Table 3. Cutting Oils for Lathe Operations
Facing Operation
Straight Turning.
Figure 25. Positiion of the Cutter Bit For facing
Figure 26. Position Of Cutter Bit for Straight Turning
Shoulder Turning Operation.
Finish Turning.
Squared Shoulder Finish.
Parting.
Taper Turning.
Figure 28. Taper Turning
Figure 29. Taper Using the compund . Using the Compoun Rest.
Compound Rest.
Taper Attachment.
Taper Attachment. - Continued - Od16450075
Taper Attachment. - Continued - Od16450076
Figure 31. Setup for Turning And Boring Tapers.
Checking Tapers for Accuracy.
Standard Tapers
Standard Tapers - Continued
Conclusion - Od16450081
Lesson 1. The Lathe Uses, and Safety; Uses, Repair and Adjustment of Lathe Attachments
Operation - Od16450083
Figure 32. Mounting The Grinderat the Center Height .
Figure 33, Position of the Diamond Dresser
Maintenance. - Od16450086
Metal Cutting Lathe Fixture
Operation. - Od16450088
Milling
Indexing
Maintenance. - Od16450091
Basic Unit.
Mounting of the Versa-Mil.
Figure 36. Milling Operations On the Lathe
Mounting on a Lathe.
Mounting On the Lathe Cross-Slide
Alignment of the Versa-Mil
Alignment With the Lathe.
Mounting and Removing Cutters from Arbors.
Figure 37. Indexing Head of the Versa - Mil Installed on the Lathe.
Lubrication and Adjustments.
Adjustments.
Lead Screw Backlash.
Adjusting the Bearings - Removing End Play.
Replacing the Oil Seals.
Conclusion - Od16450106
Task 3. Describe the various Threads forms, Uses, calculation. and Machining Techniques.
Screw Thread Terminology
Figure 39. Relation of Linear Pitch for Screw Threads.
Screw Thread Forms
Figure 40. Unified and American (National) Strandard Screw Threads.
American (National ) Standard Thread.
Figure 41. Acme. Square, and 29A Worm Screw Thread Forms.
Thread Fit And Designations.
Thread Designations
Figure 42. Thread Cutting Gages.
Figure 43. Thread Cutter Bit Square Threads
Setting Lathe Thread Cutting Mechanism for Proper Feed.
Standard-Change Gears
Simple Gear Train (figure 45).
Comound Gear Train.
Direction of Feed.
Thread Cut Tin Operations .
Figure 46. Thread Chasing Dial
Measuring External Screw Threads
Figure 47.Thread Micrometrers
Figure 48. Thread Gages
Measuring External Screw Threads.
Figure 49. Three Wire Methods Of Measuring Threads
Cutting External Acme Threads
Figure 50. Acme Thread Gage
Cutting Square Threads
Cutting Square Threads - Continued
Conclusion - Od16450134
Practical. Exercise 1
Practical Exercise 1. cont. - Od16450136
Lesson 1. Practical Exercise - Answers - Od16450137
Lesson 1. Practical Exercise - Answers - Continued - Od16450138
References
References
Lathe Operations
