get white table tops work book & text book. technology basic mechanical functions – guiding...
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Get White Table Tops
Work Book & Text Book
Technology
Basic Mechanical Functions
– Guiding Functions
– Linking Functions
• Work book and text book NEEDED
Pages
Textbook: pp. 383
Workbook: pp. 207
Definitions
p. 207
Components are…
• The parts or fluids that have a mechanical function
Components
A basic mechanical function…
• Is the role played by a component or a group of components in the function or assembly of a technical object
Screw > bolt
?
Guiding…
• Is the basic mechanical function of any component that controls the motion of one or several moving parts
A guide is…
• A component that has the basic mechanical function of guiding
Axle
?
A link…
• Helps connect two or more parts of a technical object
Linking…
• Is the basic mechanical function provided by any component that links an object’s parts
A linking component…
• Is one that has the basic mechanical function of linking
Veneer + Glue = skate board
Main Types of Guides
p. 207
Rotational guide
• This kind of guide only allows the rotational motion of moving parts
Bike Axle
Translational guide
• This kind of guide only allows the translational motion of moving parts
Bike suspension
Characteristics of links
p. 208
1st Characteristic pair
• Direct
• Indirect
Direct
• A direct link exists when two parts can hold together without requiring a linking component
Cell Phone > Case
Indirect
• An indirect link exists when the parts require a linking component to hold them together
Arm > Frame ?
2nd Characteristic pair
• Rigid
• Flexible
Rigid
• A rigid link exists when the surfaces of the linked parts or the linking component are rigid
Base > monitor
Flexible
• A flexible link exists when the surface of the linked parts or the linking component can be deformed
Pages > spine
3rd Characteristic pair
• Removable • Non-removable
Removable
• A removable link exists when linked parts can be separated without damaging them
Laces > eyelets
Non-removable
• A non-removable link exists when separating the linked parts damages them or the linking component
Sole > upper?
Complete link
• There is a complete link when there is no movement between linked parts
Top > bottom
Partial
• There is a partial link when at least one part is capable of motion with respect to the other
Cap > pen
Principal Types of Links
Fixed link
• There is no movement between linked parts
Screen > case
Rotating link
• The guided part can undergo rotational motion around one axis
Door Hinge
Sliding link
• The guided part can undergo translational motion on one axis
Drawer Slides
Sliding rotating link
• The guided part can undergo rotational and translational motion on the same axis
Seat post > seat tube
Spherical link
• The guided part can undergo rotational motion in many directions
Joystick
Helical link
• The guided part can undergo helical motion
Nut and bolt
Characteristics of Links
Activity # 1• Table = group
• 1 student with white board + pen
• Group I.D. characteristics of link
• Write answers on white board
• Winners = prize
The types of « Links » between Parts
The “link” between the handle and the punch is:
?
permanent or removable,fixed or moveable,direct or indirect,rigid or flexible,
.
The types of « Links » between Parts
The “link” between the handle and the punch is:
?
PERMANENT or removable,fixed or moveable,direct or indirect,rigid or flexible,
The types of « Links » between Parts
The “link” between the handle and the punch is:
?
PERMANENT or removable,FIXED or moveable,direct or indirect,rigid or flexible,
.
The types of « Links » between Parts
The “link” between the handle and the punch is:
?
PERMANENT or removable,FIXED or moveable,DIRECT or indirect,
rigid or flexible,.
The types of « Links » between Parts
The “link” between the handle and the punch is:
?
PERMANENT or removable,FIXED or moveable,DIRECT or indirect,RIGID or flexible,
.
The types of « Links » between Parts
The “link” between the bottom handle and the top handle is:
?
permanent or removable,fixed or moveable,direct or indirect,rigid or flexible,
.
The types of « Links » between Parts
The “link” between the bottom handle and the top handle is:
?
PERMANENT or removable,fixed or moveable,direct or indirect,rigid or flexible,.
The types of « Links » between Parts
The “link” between the bottom handle and the top handle is:
?
PERMANENT or removable,fixed or MOVEABLE,
direct or indirect,rigid or flexible,
.
The types of « Links » between Parts
The “link” between the bottom handle and the top handle is:
?
PERMANENT or removable,fixed or MOVEABLE,direct or INDIRECT,
rigid or flexible,.
The types of « Links » between Parts
The “link” between the bottom handle and the top handle is:
?
PERMANENT or removable,fixed or MOVEABLE,direct or INDIRECT,
RIGID or flexible,.
Activity # 2• Find a partner
• Get a hand-out
• Find each characteristic and type of link
• You can go anywhere in the wood shop
Homework
pp. 207-210