What are the parts of a dial indicator?
Some of the major parts of a Dial Indicator are as follows:
- A dial with the incorporation of the main scale.
- The plunger (spindle).
- Indicator (Needle).
- Locking screw or Locknut.
- Mini dial that represents the number the revolutions.
- Magnification mechanism.
What is the principle of dial indicator?
Working Of Dial Indicator It operates on the principle, that a very slight upward pressure on the spindle at the contact point is multiplied through a system of gears and levers. It is indicated on the face of the dial by a dial finger.
What is a dial drop indicator?
Dial Drop indicators have a dial face fixed to a stem with a plunger-type contact point on the end. Get dial face in White, Yellow, or Black for easy readability on shop-floor. When the contact point touches the workpiece, the up-and-down movement of the plunger is amplified on the graduated dial face.
What is the least count of dial indicator?
0.01 mm
The typical least count that can be obtained with dial indicators is 0.01 mm. It measures the measurement in the range of 0.25 to 300 mm.
How many types of dial indicators are there?
There are two main types of dial test indicator. This type of instrument relies upon a rack and pinion mechanism to change the linear (straight-line) movement of the plunger into rotary motion for the pointer.
What are the types of dial gauges?
Dial gauges are available in various types, including a standard type and lever type. The standard type uses gears and a lever to convert the linear motion of a spindle into rotational motion, mechanically expand this motion and indicate the displacement with a scale. They are suited to observing significant changes.
How many types of dial test indicators are there?
What is use of rack and pinion in dial indicator?
The internal works of a mechanical dial indicator are similar to the precision clockworks of a mechanical wristwatch, employing a rack and pinion gear to read the probe position, instead of a pendulum escapement to read time. The side of the indicator probe shaft is cut with teeth to provide the rack gear.
What are the two basic types of dial indicators?
Indicator dials come in two basic formats: balanced and continuous. Whether to use one or the other is very often determined by the gage and the range of the indicator. However, in general, if the tolerances are bilateral, such as ± 0.001 inch, the balanced dial is preferred.
What is plunger dial gauge?
The dial indicator or the Plunger dial gauge is one of the simplest and the most widely used mechanical comparator. First of all the use of plunger dial gauge used to compare work-pieces against a master.
What are plug gauges?
A plug gage assesses the conformity of objects to the prescribed specifications. A typical plug gage resembles a rod whose ends are carefully fashioned so that one end is the upper limit while the other end is the lower limit.
What is a gauge dial?
Definition of dial gauge : a gauge consisting of a circular graduated dial and a pointer actuated by a member that contacts with the part being calibrated.