Mechanical Division Standard Hand Tools. Topics Design T-Square Drafting Triangle Fabrication...
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Transcript of Mechanical Division Standard Hand Tools. Topics Design T-Square Drafting Triangle Fabrication...
![Page 1: Mechanical Division Standard Hand Tools. Topics Design T-Square Drafting Triangle Fabrication Hacksaw Cordless Drill File Sandpaper & Steel Wool Assembly.](https://reader038.fdocuments.in/reader038/viewer/2022110304/55182b9655034691678b4cde/html5/thumbnails/1.jpg)
Mechanical Division
Standard Hand Tools
![Page 2: Mechanical Division Standard Hand Tools. Topics Design T-Square Drafting Triangle Fabrication Hacksaw Cordless Drill File Sandpaper & Steel Wool Assembly.](https://reader038.fdocuments.in/reader038/viewer/2022110304/55182b9655034691678b4cde/html5/thumbnails/2.jpg)
TopicsDesignT-SquareDrafting Triangle
FabricationHacksawCordless DrillFileSandpaper & Steel Wool
Assembly
Wrench & Adjustable WrenchAllen Key
ScrewdriverRatchet
Caliper
MV
RT
115
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Design
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T-SquareUsed in conjunction with drafting board and triangle
Allows drawing of horizontal linesKeep your T-Square clean and check to make sure it is straight
MV
RT
115
Examples of t-squares used in the art department
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Drafting TriangleUsed by sliding on top of T-Square
Allows drawing of vertical lines
Keep your triangle clean
MV
RT
115
Keep your triangle clean
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CaliperUsed for precision measuring of thickness and diameter
Measures up to ten-thousandths (0.001) of an inch
Useful for measuring shaft and hole diameters
MV
RT
115
A set of calipers similar to ours
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Fabrication
![Page 8: Mechanical Division Standard Hand Tools. Topics Design T-Square Drafting Triangle Fabrication Hacksaw Cordless Drill File Sandpaper & Steel Wool Assembly.](https://reader038.fdocuments.in/reader038/viewer/2022110304/55182b9655034691678b4cde/html5/thumbnails/8.jpg)
HacksawUseful for cutting down long bolts & PVC
Long smooth cuts versus short rapid spasms
Be careful not to damage the blade
Watch table edge and corner
Angle downward for ease of cutting
MV
RT
115
A high tension hacksaw similar to ours
![Page 9: Mechanical Division Standard Hand Tools. Topics Design T-Square Drafting Triangle Fabrication Hacksaw Cordless Drill File Sandpaper & Steel Wool Assembly.](https://reader038.fdocuments.in/reader038/viewer/2022110304/55182b9655034691678b4cde/html5/thumbnails/9.jpg)
Cordless DrillUseful for drilling holes or tightening/loosening screws
Don’t even try to drill steel
Do not completely discharge the battery; it shortens its average life span
Use only when accuracy is not an issue
Avoid having to drill aluminum
Avoid over-tightening screws
Try not to wear out screw heads
MV
RT
115
A standard cordless drill
Click to continue
![Page 10: Mechanical Division Standard Hand Tools. Topics Design T-Square Drafting Triangle Fabrication Hacksaw Cordless Drill File Sandpaper & Steel Wool Assembly.](https://reader038.fdocuments.in/reader038/viewer/2022110304/55182b9655034691678b4cde/html5/thumbnails/10.jpg)
FileEffective at “making stuff fit together” by grinding down edges
Stay away from steel
File perpendicular to the teeth and away from yourself in smooth strokes
Absolutely not for precision parts
Use only on wood, Plastic, and aluminum
Can be used as an alternative to the de-burring tool for de-burring
MV
RT
115
Click to continue
A typical file
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Sandpaper & Steel Wool A step down from the file in terms of grinding power
Generally use low (60-100) grit to start out wood and plastic
Use appropriate grit for material and amount to sand down
Absolutely not for precision parts
Higher grit = finer sand
Use medium (120-180) grit for working wood, plastic, and grinding aluminum
High (220+) grit for finishing wood, plastic, and light work on aluminum
MV
RT
115
Continued on Next slide
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Steel wool is excellent for “persuading” shafts and other slightly-too-big parts to fit
Beware of the steel dust that falls off when polishing; they will make electrical unhappy!
Various grades of sandpaperRolls of steel wool
Sandpaper & Steel Wool MV
RT
115
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Assembly
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Wrenches and A. Wrenches Generally used in pairs to tighten bolts and nuts
Avoid using the adjustable wrench when possible; slippage causes wearing on the bolt heads and nuts
Use appropriate measuring system (metric or English/standard/whatever) to avoid wearing down nuts and bolt heads
Alternative to ratchet when space is an issue
MV
RT
115
Click to continue
A Wrench An Adjustable Wrench
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Allen Keys Used to tighten and loosen socket-head bolts and screws
The ball-shaped end allows easy insertion to start off tightening
Comes in two flavors; Metric and English/Standard/Whatever
The flat end has greater potential for tightening torque due to long handle
Replace Allen keys in proper sets
MV
RT
115
Your everyday set of allen keys
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Screwdriver Used to tighten and loosen Slot and Phillips head screws
Phillips is used for Phillips head screws
Slot, or commonly known as flat, is used for slot head screws
Wider-diameter Phillips screwdrivers generally have flatter tips
Use proper judgment when selecting a screwdriver to avoid unnecessary head wearing
MV
RT
115
A screwdriver Click to continue
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RatchetUsed to tighten and loosen Hex head bolts
Fast and easy way to loosen and tighten bolts
Generally used in conjunction with a wrench on the nut/bolt head
Socket heads come in metric and English/standard/whatever
Use proper judgment when selecting a socket head to avoid wearing
To change socket heads, press and hold the release button on the back of the ratchet head
MV
RT
115
Continued on Next slide
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Then remove the socket, fit the new socket head on completely, and release the release button
Ensure the ratchet stop is set in the proper directionTo change rotational direction, flip the switch on the back of the ratchet head to the other side of the headRemember to replace socket heads in their proper locations
Some ratchet
Click to continue
Ratchet MV
RT
115