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Geometric Measurement functions & concept of features
all geometric elements in ES-9Q are called
can store totally 100 features in the non-volatile memory, all features are labeled by feature no,
they are feature 0 to feature 99. In ES-9Q's calculation, the point feature and the circle feature
are the same, the centre of the circle in circle feature are treated as a point feature.
notice all features memory are reference to the ABS coordinate.
features are in same work piece plane no matter they are measured under different sub-datums.
The are 10 set of work coordinates in ES-9Q, they are ABS, Sd.1 to Sd.9. The ABS is the main
coordinate, the Sd.1 to Sd.9 are sub-datums for ease of measurement and temporary reference.
Since all features memory are reference to ABS coordinate, if the measured features is stored
in the ES-9Q's feature memory, all measurements are in same reference datum no matter they
are measured in different sub-datums. It is also very import that the ABS coordinate cannot be
reset during the measurement of one work piece.
The INC coordinate in ES-9Q is a very special coordinate, this coordinate are a temporary coordinate
used by many geometric calculation functions in ES-9Q. For example, it is preset to the centre
position for 3 point circle measurement function after calculation, it is also preset to all point
calculated position for the function such as four point angle, two lines intersection, point-line
perpendicular projection point. Therefore, it should never be used as sub-datum point coordinate
of the work piece.
1) 3 points to construct a circle function
Purpose: To pick three point from the circle or arc
feature in the work piece, ES-9Q then
calculate the centre position and
Diameter(D) / Radius(R)
(from 3 up to 9 points)
Operation procedure
Under the ABS coordinate, there are two method of construct a circle feature:
a) Pick three points in the circle or arc directly from work piece ;
b) Recall three points features or circle features from memory ;
a) Pick three points in the circle or arc directly from work piece ;
1. Press the
key to enter into 3 point circle function
Q
3 points to construct a circle funcion
Polar
Store
Recall
R/D
Print
XY
Enter
FI N I S H
feature
, such as point, line, circle. and etc. ES-9Q
- 10 -
Please
Therefore, all geometric
B
A
C
message window displays
requesting enter the point no. 1
POINT 1
Polar
XY
Q
ENT PT.1
Store
Recall
R/D
Print
Enter
FI N I S H
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