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Chp 7 Production Tools and Their Safe Use
Spring 05 Foundations of Engineering and Technology
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Objectives: Categories of production tools used in technology
Characteristics of Machine tools Identify major types of machine tools Describe the major types of energy processing tools and machines Describe the major types of information processing tools and machines List guidelines for using tools and machines properly and safely
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Materials Processing Tools and Machines-pg 127
Machine Tools-machines used to make other machines Characteristics of Machine Tools: A method of cutting materials-cutting tool A series of motions between tool and material Support of tool and workpiece
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Cutting Tools-pg 128 Two Basic Types-
1. Single Point-knives, chisels and planes 2. Multipoint-saw blade
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Motion-pg 129 2 Main Types Cutting-action that causes material to be removed from the work Feed-brings new material to the cutting tool Kerf-the slot where the material has been cut away All feed can be categorized as: pg 135 Rotating- Reciprocating Linear
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Support-pg 130 Chucks Arbors
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Types of Machine Tools-pg 131
6 Categories: Turning-use a process in which a workpiece is held and rotated on an axis-lathe Sawing-use teeth to cut material-crosscutting, ripping, resawing, grooving, chamfering. Three Types of Saws: Circular-crosscutting, ripping and combination cutting Band-continuous strip with teeth on one edge Scroll-up and down motion-teeth on one edge Drilling-produce or enlarge holes via a rotating cutter Types of operations- Drilling-producing straight, cylindrical holes Counter boring-producing two holes around the same center point Countersinking-producing a beveled outer portion of a hole Reaming-enlarging the diameter of a hole Shaping-metal working machine tools product flat surface Planing Grinding-remove very small pieces with random cutting surface
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Energy-Processing Converters
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Energy-Processing Converters
Law of Conservation of Energy-energy cannot be created or destroyed…it can only change form Conversions: Mechanical to electrical Electrical to mechanical Radiant to thermal Heat to mechanical
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Steam Engine Early 1700’s Major impact from Industrial Revolution
Allowed control of: Intensity, duration, and location of power Major impact on civilization as we knew it
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Internal Combustion Engine
Developed late 1800’s Powers vehicles Use gasoline and/or diesel Two Stroke or Four Stroke Stroke-movement of a piston from one end of a cylinder to another Cycle-complete set of motions needed to produce a surge of power Intake, Compression, Power and Exhaust
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Electric Motor Most universally used source of power
Based on the laws of magnetism: Like poles repel, unlike poles attract Current flowing in a wire creates an electromagnetic field around the conductor
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Information Processing Machines
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Communication Methods
Basic to all modern communication systems are printing, telecommunications and computer
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Printing Moveable type 1400’s First book he printed was the Bible
Johann Gutenberg
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Telecommunications Telephone-Alexander Graham Bell Radio-Marconi
Hardwired-each telephone has a separate wire to transmit the signal Radio-Marconi 1901 Used for ships to send danger signals
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Computers 5 parts: Input-keyboard, storage devices, modems, mice, other computers+ Processing- CPU-central processing unit RAM-Random Access Memory-short term temporary memory-NOT the hard-drive Output Memory Program
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Production Tools What makes the Manufactured Goods
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Flow Chart Symbols Operation - Object is changed in its chemical or physical makeup. It is assembled or disassembled. Transportation – Object is moved from one place to another Inspection – Quality of the object is inspected Delay – Object is held awaiting the next operation Storage – Object is placed in a protected location
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The Clipboard Flow Chart
Cut plastic to rough width
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The Table Saw Purpose: Used to rip or cut stock to width
Use for our product: Used to cut the rough width of the plastic
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The Clipboard Flow Chart
Cut plastic to rough width Cut plastic to rough length
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The Compound Miter Saw Purpose: Used cut materials to length and width
Use for our product: Used to cut the rough length of the plastic
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The Clipboard Flow Chart
Cut plastic to rough width Cut plastic to rough length Trim to actual size
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The Jointer Purpose: Used to join edges or square stock
Use for our product: Used to trim edges to actual size
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The Clipboard Flow Chart
Cut plastic to rough width Cut plastic to rough length Trim to actual size Drill holes for the clip
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The Drill Press Purpose: Used to drill holes Use for our product:
Used to drill holes for the clip
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The Clipboard Flow Chart
Cut plastic to rough width Cut plastic to rough length Trim to actual size Cut corners to round Drill holes for the clip
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The Corner Rounder Purpose: Cut round corners of material
Use for our product: Used to cut the round corners of the clip board
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The Clipboard Flow Chart
Cut plastic to rough width Cut plastic to rough length Trim to actual size Put on the clip Cut corners to round Drill holes for the clip
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The Pop Rivet Gun Purpose: Attach objects by using rivets
Use for our product: Used to attach the clip to the board
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1. Identify the Pop Rivet Gun.
Stop for Questions A B C F D E
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2. Identify the Compound Miter Saw.
Stop for Questions A B C F D E
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3. Identify the Drill Press.
Stop for Questions A B C F D E
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4. Identify the Corner Rounder.
Stop for Questions A B C F D E
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5. Identify the Table Saw. Stop for Questions A B C F D E
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6. Identify the Jointer. Stop for Questions A B C F D E
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7. What is the operation of the Pop Rivet Gun?
Stop for Questions Used to rip or cut stock to width Used to cut the corners Used to drill holes Used to hold things together using rivets Used to cut material to length Used to join edges or square stock
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8. What is the operation of the Jointer?
Stop for Questions Used to rip or cut stock to width Used to cut the corners Used to drill holes Used to hold things together using rivets Used to cut material to length Used to join edges or square stock
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9. What is the operation of the Table Saw?
Stop for Questions Used to rip or cut stock to width Used to cut the corners Used to drill holes Used to hold things together using rivets Used to cut material to length Used to join edges or square stock
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10. What is the operation of the Corner Rounder?
Stop for Questions Used to rip or cut stock to width Used to cut the corners Used to drill holes Used to hold things together using rivets Used to cut material to length Used to join edges or square stock
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11. What is the operation of the Drill Press?
Stop for Questions Used to rip or cut stock to width Used to cut the corners Used to drill holes Used to hold things together using rivets Used to cut material to length Used to join edges or square stock
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12. What is the operation of the Compound Miter Saw?
Stop for Questions Used to rip or cut stock to width Used to cut the corners Used to drill holes Used to hold things together using rivets Used to cut material to length Used to join edges or square stock
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