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20
6. cam 13. complex movement
7. pair of lower degree 14. kinematic pair
7. Answer the following questions
1. Can a crank perform complete circular movement?
2.
How many classifications of kinematic pairs do you know?
3.
What does a mobile link mean?
4.
How many degrees of freedom does any freely moving body have?
5.
Can a mobile link perform translational movement?
6.
Which KP is called a pair of a higher degree?
7.
How many classes of kinematic pairs do you know (according to the
number of constraint conditions)?
8. Make up sentences using the following words and phrases.
1. Are, following, of, kinds, the, pairs, used, kinematic
2.
Translational, slider, a, performs, is, link, movement, only, that
3.
Independent, kinds, body, in, six, each, has, space, a, possible, motions
4.
Equal, six, lose, mobility, if, number, links, relative, the, is, constraint,
to, the
5.
Rack, mechanism, designated, link, motionless, of, was, as
6.
A, complex, that, connecting, is, movement, rod, link, performs
7.
Incorporated, mobile, links, be, the, motionless, and, can, differently
8.
May, relative, links, perform, five, movements
9.
Is, incomplete, link, a, performs, rotary, called , that, rocker, movement
9. Write suitable words in each gap.
1. Crank is a link, which performs complete ……. movement about
some centre.
2.
The link that performs ……. rotary movement is called ……..
3.
Connecting rod is a link that performs ……. movement (……. and
rotary).
4.
……. is a link that performs only translational movement.
5.
Guide is a mobile guide -……..
6.
Cam is a detail as a plate, ……., cylinder that has a shaped working
surface used for realization of a …….movement of the …….
mechanism according a given law.
7.
……. (cam special case) is disk or cylinder that fits eccentrically on
the ……., i.e. with the displacement of a geometrical ……. of a disk
concerning an axis.
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