IPE 381
Chapter:10
Gauges and Gauge Design
meet your makersAbdullah-Al-Mamun
Lecturer, Dept. of IPE
Outline
•Basics of Gauges
•Classification of Gauges如何系统的学日语
•Gauge Design
•Screw Gauges
•Adv & Disadv of Limit Gauges
•Gauge Design problem
Gauges
•Gauges are inspection tool of
rigid design, without a scale,
which rves to check the
prosperous的名词
dimensions of manufacturing
parts.
relationship
•Gauge do not indicate the actual
value of the inspected part of the
component.
•They are ud to determine
whether the part is made within
the specified limit.
Classification of Plain Gauge •Plain gauges are ud for checking plain (unthreaded) holes and
shafts. Gauges are classified:
•According to their type:
stealth(a) Standard gauges-made as an exact copy of oppod(mating)
part沪江部落
(b) Limit gauges-made to the limits of the dimensions •According to their purpos:
(a) Workshop Gauge: To Check Dimension after manufacture法国爆发大规模抗议
(b) Inspection Gauge: To check part before final acceptance
(d) Purcha Inspection Gauge: To check part of other factory
(c) Reference or master gauges: To check the dimension of
Gauge
radio的复数Classification of Plain Gauge •According to the form of the tested surface :
(a)Plug gauges for checking holes.晚餐英语
(b)Snap and ring gauges for checking shafts.
Classification of Plain Gauge •According to their design:
(a)Single limit and double limit gauges
打招呼的英文
(b)Single ended and double ended gauges,
(c)Fixed and adjustable gauges.
Limit Gauge
•Limit gauges are made to the limits of the dimensions of the part to be tested. There are two limit of
dimensions, so we need two limit gauge.
•‘Go gauge’ should pass through or over a part while ‘Not Go gauge’ should not pass through or over the part.
Design of Limit Gauge
•Allocation of Tolerance
–Manufacturing Tolerance
–Wear Allowance
•Taylor’s Principle of gauge Design
•Fixing of Gauge elements with handles
–Taper lock design
–Trilock Design
•Provision of Guards
•Provision of PilotCorrect Centering
•Materials
•Hardness and Surface finish
•Rigidity
•Alignment of Gauge faces
Allocation of Tolerance
Manufacturing Tolerance
•It is economically impractical to attempt to make “Go” and “Not Go”
gauges exactly to the two limits of work tolerance.
•Limit gauges are made 10 times more accurate than the tolerances they are going to control.
Allocation of Mfg Tolerance
