Ertan Toparlak 9th Week Unanswered Terms

Defining a Pattern (in APT codes):APT uses the pattern word (PATERN) to define a regular pattern of points.

• Defining a linear pattern of points

A linear pattern of points may be generated in terms of a starting point (start), ending

point (end), and the total number of points (n) needed,

= PATERN / LINEAR, , ,

Using this command, n-2 points are generated in an equidistant fashion between the

and points. Example generated by,PATA = PATERN / LINEAR, PT1, PT2, 5

Note that the only points that have a symbolic name in the linear pattern are PT1

and PT2. If one of the other 3 points needs to be given a symbol, this can be handled

by,PT3 = POINT / PATA, 3 which gives the third point from the beginning , point PT1, the name PT3

• Defining a grid of points

A grid of points can be specified using the COPY modifier,

= PATERN / COPY, PATB, ON, PATA

PAT4 = PATERN/COPY,PATl,ON,PAT2,SAME

(INTEGRATING ADVANCED COMPUTER-AIDED DESIGN, MANUFACTURING, AND NUMERICAL CONTROL:PRINCIPLES AND IMPLEMENTATIONS-1st Edition-Xun Xu-Chapter 9-P.214)

Defining a Cylinder (in APT codes):One of several ways to define a cylinder is as tangent to two planes. There are four possible ways this may happen. The definition structure becomes

somewhat cumbersome as a few axis modifiers have to be used,

= CYLNDER/, TANTO,,,TANTO,,RADIOUS,The axis modifier depends on the relationship of the cylinder centre point to the tangent point of the plane the modifier proceeds.Examples;

CYL1 = CYLNDR/XLARGE,TANTO,PLAN1,YSMALL,TANTO,PLAN2,RADIUS,2.5,

or

CYL1 = CYLNDR/YSMALL,TANTO,PLAN2,XLARGE,TANTO,PLAN1,RADIUS,2.5

CYL2 = CYLNDR/XSMALL,TANTO,PLAN1,YSMALL,TANTO,PLAN2,RADIUS,2.0,

or

CYL2 = CYLNDR/YSMALL,TANTO,PLAN2,XSMALL,TANTO,PLAN1,RADIUS,2

.0

CYL3 = CYLNDR/XSMALL,TANTO,PLAN1,YLARGE,TANTO,PLAN2,RADIUS,3.0,

or

CYL3 = CYLNDR/YLARGE,TANTO,PLAN2,XSMALL,TANTO,PLAN1,RADIUS,3.0

CYL4 = CYLNDR/XLARGE,TANTO,PLAN1,YLARGE,TANTO,PLAN2,RADIUS,2.2,

or

CYL4 = CYLNDR/YLARGE,TANTO,PLAN2,XLARGE,TANTO,PLAN1,RADIUS,2.2

(INTEGRATING ADVANCED COMPUTER-AIDED DESIGN, MANUFACTURING, AND NUMERICAL CONTROL:PRINCIPLES AND IMPLEMENTATIONS-1st Edition-Xun Xu-Chapter 9-P.218)