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Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
“Invent a New India Using Knowledge”
है”ह”ह
IS 10722-1 (1983): Graphical Symbols for Elements ofKinematic Diagrams - Part 1 [PGD 24: Drawings]
_
IS : 10722. ( Part 1) - 1983 JDC 744’4 : 531; 1 : 003.62 IS0 3952/l 1981 -
Indian Standard
GRAPHICAL SYMBOLS FOR ELEMENTS OF KINEMATIC DIAGRAMS, PART 1
( IS0 Title : Kinematic Diagrams - Graphical Symbols - Part 1 )
National Foreword
This In&an Standard ( Part 1 ), which is indentical with IS0 3952/l-1981 Kinematic diagrams - Graphical symbols - Part 1, issued by the International Organization for Standardization (ISO), was adopted by the Indian Standards Institution on recommendation of the Drawings Sectional Committee and approved by the Engineering Division Council.
Wherever the words ‘ International Standard ’ appear, referring to this standard, they should be read as ‘ Indi~an Standard ‘.
Additional Information i
This standard is the national implementation of IS0 3952/l-1981, as such only the English text has been reproduced. If the French and Russian texts are required, reference should be made to the original IS0 publication.
This standard includes a number of parts, each identical with the corresponding part of the Inter- national Standard IS0 3952, as follows: \
Part 1 ( IS0 3952/l )
Part 2 ( IS0 3952/2 )
Part 3 ( lS0 3952/3 (
Ilhtroduction
Motion of links of mechanisms Kinematic pairs Links and connection of their components N-bar linkages and their components
Friction and gear mechanisms Cam mechanisms
Geneva and ratchet mechanisms Couplings and breaks
The purpose of this International Standard is the creation of a system of graphical symbols for kinematic diagrams. The creation of such a System will simplify the preparation of kinematic diagrams and will facilitate the execution and understanding of such diagrams by specialists-of different countries.
Scope and field of application \
The International Standard establishes the graphical symbols for elements of kinematicz&agrams of products in all branches of industry. The symbols established by the International Standard are to be used in diagrams In technical documentation, as well as’iu.teclinical and educational literature.
The International Standard is being published in three parts, as follows:
Part 1
1
2 3
4
Part 2
5
6
Patt 3
7
8
Motion of links -of mechanisms
Kinematic pairs
Links and connections of their components
N.bar linkages and their components
Friction and gear mechanisms
Can mechanisms
Geneva and ratchet mechanisms Couplings and brakes
Adopted 16 August 1984 @ May 1984, IS11 Cr 7
INDIAN STANDARDS INSTITUTION
MANAK BHAVAN, 9 BAHAtiUR SHAH ZAFAR MARG
NEW DELHI 110002
1 Motion of links of mechanisms
N
__.--_-
No. Designatibn Definition Basic symbol Permissible symbol Notes
__.~ _____ ~-
1.1 Trace of motion Trace or part of trace of For straight line motion
some point on link
For rotational motion
1.2
1.3
-__ -_.__ -
Direction of motion Direction of motion shows to which side point moves along trace
I
Instantaneous stop at Instantaneous stop with- I For straight line motion
iritermediate position out changing direction of I
motion
For rotational motion
1.4
1.5
Dwell at intermediate Dwell without changing ’ position direction of motion
1
Dwell at extreme position Dwell followed by chang- ing of direction of motion I
1.6 Partial reverse motion Motion of link generally in one direction but with partial reversal at some point
Straight line
Rotational
1.7 stop End of motion
1.8 Examples
1.8.1 One-sided motion Motion with constant 6 Straight line
direction
0 Rotational
1.8.2 One-sided motion with Straight line instantaneous stop
Rotational
1.8.3 One-sided motion with dwell
Straight line
Rotational -,
1.8.4 One-sided motion with W Straight line
partial reversal
Rotational
1.8.5 Oscillating motion Motion with variable direction
+ * Straight line
Rotational
.-, ,_. - - _. . . ̂ ”
2 Kinematic pairs
No. Designation Definition Basic symbol Permissible symbol Notes
2.1 Pairs with one degree of freedom
2.1.1 Revolute pair : Turning Joint of two links permit- pair ting rotational motion of
one link relative to the
a) for planar mechanisms other A
if&
+I+
b) for spatial mechanisms
-
2.1.2 Prismatic pair
-.
Joint of two links permit- ting rectilinear translation of one link relative to the =lD
other
+7- I
2.1.3 Screw pair; Helical pair Joint of two links permit- ting helical motion ( with constant pitch ) of one link relative to the other A- A
I
-&t- -A--
2.2 Pairs with two degrees of freedom
2.2.1 Cylindrical pair Joint of two links permit- ting cylindrical motion of one link relative to the -a- other
-
_
-
No. ___
2.2.2
-__
2.3
2.3.1
2.3.2
2.4
2.4.1.
2.5
2.5.1
_
_-
-
Designation
______
Spherical pair with pin
Pairs with three deg- rees of freedom
Spherical pair
Planar contact pair
Pairs with four deg- rees of freedom
Ball-and-cylinder pair
Pairs with five degrees of freedom
Ball-and-plane pair
Definition
Joint ‘of two links per. mitting rotations ahoui two intersecting axes
Joint of two links permit. ting spherical motion o! one link relative to tht other
Joint of two links, permit- ting general planar nzotion of one link rela- tive to the other
Joint of two links made up of a ball within j cylinder
Joint of two links made up of a ball and a plane
Basic symbol
_-
- _
-
Permissible symbol
-
Notes
-
3 Links and connections of their cottlponents
No. Designation i
Definition I
Basic symbol Permissible symbol
3.2 Shaft; bar; axle
-I I
I 3.4 Fixed connection of
component to shaft ( bar, axle )
__J 0
It is permitted to close the solidly fitted-in region with the straight line
-+I-+ -+- 3.5 Adjustable connection of
link components
Notes
-p’
0
4 N-bar linkages and their components
_-
NO.
--
1.1
9.2
4.2.1
4.2.2
4.2.3
Designation
Linkages with lower pairs
Single-element link
The link is a part of a revolute pair
a) for planar mechanisms
b) for spatial mechanisms
The frame is a part of a revolute pair
a) for planar mechanisms
b) for spatial mechanisms
The link is a part of a prismatic pair
Definition
Mechanisms with links forming parts of lower pairs
The link is a part of a kinematic pair
Basic symbol Permissible symbol
d / 1
3-i -
-ELI-
0
Notes
By convention, the part of a pair draw-n with thin lines belongs to the ad- joining link
___-~
4.2.4 The link is a part, of a cylindrical pair
P-P
4.2.5 The link is a part of a spherical pair
4.3 Double-element link ( bi- The link forms the con_ hary link ) nection between two
kinematic pairs
4.3.1 The link forms the con- nection between revolute pairs -
4.3.1.1 Coupler The link forms the con- nection betweed kinema-
/ tic pairs joining mciving links only
b) for spatial mechanisms
I
c
.3.2.2 hider
1.3.3
lt3.3.1
4.3.3.:
The link forms the con- section between a revo- ute and a prismatic pair
Zommon case
Slotted link ( slotted lever )
Slider
The link is a part of ; revolute pair fyith thl frame and a part of i prismatic pair with thl moving link
The link is a part of prismatic pair with th frame
--A-
f ,
Angle 8 is arbitrary
No. --
4.4
4.5
-_
_-
Designation
Ternary link
Mu1 ti-element link
-i-
Definition
The lihk forms the con- nection between three kinematic pairs
Basic symbol
4 Permissible symbol Notes
0 0 0
P
I I)-_0
Symbols are similar to those of binary or ternary link
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