Page 321 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

Fillet and polar array commands

Array (AR)
Makes multiple copies of selected objects in a rectangular (parallel with the snap rotation) or circular pattern R
rectangular array type P “polar” array type in circular pattern (Fig 1).
Polar array
To make multiple copies of an object in circular pattern. Check the option button Polar in the array dialog box.
Select object to array after choosing select object button in the dialog box. Enter number of items required and
pick for the center of array after choosing the center point button in the dialog box. Supply the angle of array.
Finally check the check box for rotating the object with respect to array center.
Fillet (F)
Constructs an arc of specified radius between two lines, arcs, circles, or will create arcs of the specified radius at
the vertices of a polyline. Radius of the arc to be constructed may be set to 0, which will make a sharp corner P
Fillets an entire Polyline at the vertices R Allows setting of the fillet radius. Default value is 0. Radius remains
set until changed again.

Fig 1

Rectangular array and area commands

Polyline (PL)
PLINE Draws a 2D polyline, which are connected line or arc segments with user-determined width and taper H
sets the half-width of the polyline segments U Undoes previous segment W sets the width of polyline segments
<RET> Exits the Pline command The following options are available only as long as you are drawing in Line mode:
A Switches to the Arc mode to allow integration of arcs into the polyline C Closes the polyline with straight segment
L Segment length (continues previous segment)
The following options are available only as long as you are in the Arc mode: A Included angle CE Center
Point CL Closes with arc segment D Starting direction.

308
CITS : Engineering Drawing (Mechanical) - Exercise 12