chapter 13 Flashcards
(14 cards)
What is a link
a mechanical attachment of two or more components in a technical object
what is this link?
X
complete link
What does this symbol represent?
—/—
—-/——- omfg u get it
-/—— u understand what im
I going for
I
Translational guiding control
what does this symbol represent?
——— |——-——-| omfg u get it
——— u understand what im
I going for
I
Rotational guiding control
what does this symbol represent?
———
——-——- omfg u get it
——— u understand what im
I going for
I
Translational and rotational guiding control
(its helical but never say helical)
Name the characteristics of links (8)
Describe them
Direct | Indirect
Attachment without | attachment with a linking component| a linking
| component
Rigid |Flexible
The linkage does |The linkage does
not allow |allow movement
movement
Removable |Non-Removable
The linked parts |The linked parts
can be separated | cannot be
without damaging. | separated without
the components. | damaging the
| components
Complete | Partial
The linkage | The linkage
prevents | allows
independent | independent
motion | motion
Explain the 6 degrees of freedom and name them
There are 6 possible ways in which a part cab display independent motion across the x y and z axes
Rotational on x
Rotational on y
Rotational on z
Translational on x
Translational on y
Translational on z
What is a guide? Explain the 3 ways guides can… well… guide
the mechanical component which controls the motion of at least one moving part
translational
rotational
helical
What is adhesion?
two surfaces remaining in contact without slipping
What are factors in the strength of adhesion (5)
Nature of materials
Temperature
Surface
Perpendicular force
Lubricationq
What is a motion transmission system
A system in which one type of motion is transmitted to another location through mechanical components
ex: Rotational to rotational
Translational to translational
Explain these system components:
Driver
Driven
Intermediate
Driver: at the root of the systems motion
Driven: receives the power required to set the system in motion
Intermediate: located between the driver and the driven
Formula for gear and speed ratios
how do u formulate ratios also
of teeth per gear1 OR speed of gear1
——————————————————-
# of teeth per gear2 OR speed of gear2
Gear ratio= Driver:Driven.
Speed ratio= Big:Small.
ex: gear ratio of 2:1 and speed ratio of 1:2
Explain a motion transformation system
A system in which one type of motion is transformed into another type of motion to another location through mechanical components
ex: Rotational to translational
Translational to rotational
