Manufacturing techniques evaluation: cutting operations

K ey factors in determining the most cutting technique are: material characteristics (notably hardness, and thermal and electrical properties), component thickness, component shape and complexity, required edge quality, and production volume. Select cutting options below for a detailed analysis of techniques.

Cutting options

1. _______: abrasive cutting, removing a kerf of material. Includes cutting with toothed blades and abrasive wheels.

2. _______: use of pressure on smooth-edged blades for guillotining and punching.

3. _______: removal of material across the full diameter of a hole, or using hole-saws for cutting circumferential kerfs.

4. _______: removal of surface layers with multiple cutting wheel passes.

5. _______: using oxy fuel (oxygen + combustible gas, often acetylene)

Task 14. Complete the following definitions using the words or word combinations in the box.

abrasive wheel guillotine hole-saw kerf punch toothed blade

1. A ______ make holes by applying pressure to shear the material.

2. A ______ makes straight cuts by applying pressure to shear the material.

3. A ______ is the width of the saw cut.

4. A ______ has sharp edges for cutting or milling.

5. A ______ has a hard, rough surface for cutting or grinding.

6. A ______ cuts a circular piece to remove an intact core of material.

Task 15. Describe the main principle of the ultrasonic machining (USM) process that is shown on the right and get ready for presenting your report at the conference “Innovations in Science and Technology”. Write a plan of your report.

Task 16. Watch the video file “Tools with Integrated Dampening” about pioneering solution to vibration problems when machining with long slender tools. Write a short report (100-120 words) on a process that is shown.

Unit 5. Motion control systems overview

Task 1. Discuss the following questions:

1. H ow much do you know about a motion control system?

2. Where are motion control systems used today? Make a list of possible applications of motion control systems. Compare it with those of your groupmates.

Task 2. Look at the picture. Try to give a definitions to all parts of this multiaxis X-Y-Z motion platform.

Elevation - Brushless servomotors - Multiaxis motion controller - End effector - Servo drive -

Task 3. Describe the main operation principle of a fractional horsepower permanent-magnet DC servomotor that is shown and get ready for presenting your report at the conference “Innovations in Science and Technology”. Write a plan of your report.

T ask 4. Listen to the description of motion control systems and try to describe the main principle of it. Give your own example of using motion control systems.

Task 5. Read the text and write a short plan of it.