Posted On :

Mechanical - Metrology and Measurements - Thread Measurement

**TECHNICAL
TERMS**

·** Pitch**

It is the distance measured parallel to
the screw threads axis between the corresponding points on two adjacent threads
in the same axial plane. The basic pitch is equal to the lead divided by the
number of thread starts.

·** Lead:**

The
axial distance advanced by the screw in one revolution is the lead.

·** Addendum**

Radial distance between the major and
pitch cylinders for external thread. Radial distance between the minor and
pitch cylinder for internal thread.

·** Dedendum**

It is the radial distance between the
pitch and minor cylinders for external thread. Also radial distance between the
major and pitch cylinders for internal thread.

·** Pressure angle (a**)

It is the angle making by the line of
action with the common tangent to the pitch circles of mating gears.

·** Module(m)**

It
is the ratio of pitch circle diameter to the total number of teeth

·** Lead angle**

It is the angle between the tangent to
the helix and plane perpendicular to the axis of cylinder.

·** Straightness**

A line is said to be straight over a
given length, if the variation of the distance of its from two planes
perpendicular to each other and parallel to the general direction of the line
remains within the specified tolerance limits

**Roundness **Roundness
is defined as a condition of a surface of revolution. Where all** **points
of the surface intersected by any plane perpendicular to a common axis in case
of cylinder and cone.

Tags : Mechanical - Metrology and Measurements - Thread Measurement

Last 30 days 59 views
Related words : ### What is Technical Terms in Thread Measurement Define Technical Terms in Thread Measurement Definition of Technical Terms in Thread Measurement where how
meaning of Technical Terms in Thread Measurement
lecturing notes for Technical Terms in Thread Measurement lecture notes question and answer for Technical Terms in Thread Measurement answer
Technical Terms in Thread Measurement study material Technical Terms in Thread Measurement assignment Technical Terms in Thread Measurement reference description of Technical Terms in Thread Measurement
explanation of Technical Terms in Thread Measurement brief detail of Technical Terms in Thread Measurement easy explanation solution Technical Terms in Thread Measurement wiki
Technical Terms in Thread Measurement wikipedia how why is who were when is when did where did Technical Terms in Thread Measurement list of Technical Terms in Thread Measurement school assignment college assignment
Technical Terms in Thread Measurement college notes school notes kids with diagram or figure or image difference between Technical Terms in Thread Measurement www.readorrefer.in - Read Or Refer

Recent New Topics :