Cutter Compensation 150401e

Question 1

How does cutter compensation simplify calculations?

Answer 1

Allows you to program point-to-point while ignoring cutter size and diameter. Simplifies calculations

Question 2

What if a G40 is included in a non motion command?

Answer 2

Waits until next motion command. The next X and Y coordinate is used as Cutters Centerline

Question 3

4 rules for programming work surface path?

C C C A

Answer 3

Cutter comp value must be equal or less than smallest inside radius
Careful with non motion commands
Careful with recesses in X and Y
Avoid two or more movements in the same direction

Question 4

List 3 things in the instating command

Answer 4

G41 or g42
D word in register number
X or Y coordinates to First surface to machine

Question 5

The maximum cutter size if it is not on setup sheet?

Answer 5

Double the distance from Prior position to First surface to Mill

Question 6

3 motion commands to engage Milling cutter to First surface to Mill?

Answer 6

X and Y motion to Prior position
Z axis motion to Z axis work surface
Instating command that brings Milling cutter in X or Y to First surface to Mill

Question 7

Three steps to programming cutter compensation?

Answer 7

Instate cutter compensation
Program toolpath to be machined
Cancel cutter compensation

Question 8

Is it possible to use same toolpath coordinates and tool for roughing and finishing?

Answer 8

Yes.

Use a cutter comp that’s larger by finishing stock amount than the cutter being used

Question 9

What is meant by trial Machining?

Answer 9

Insurance cutter machines properly on the first workpiece

Question 10

For what reason is cutter compensation most important to set up people?

Answer 10

Trial Machining and sizing

Question 11

The only time to consider the size of cutter when programming work surface path is for its…

Answer 11

Approach movement

Question 12

4 reasons why cutter compensation is required?

Answer 12

Simplified calculations
Range of cutter sizes
Trial Machining and sizing
Rough and finish Milling

Question 13

When will the range of cutter sizes be a concern?

Answer 13

Too big, it may break cutter compensation rule. Too small, isn’t capable of Machining Contours

Question 14

Name 2 ways the Cutters size may be specified when using cutter compensation

Answer 14

Most use radius value, Milling Cutters diameter

Question 15

When choosing a prior position, what angle should it form with a surface to be milled?

Answer 15

90°

Question 16

Why should you specify an acceptable range of cutter sizes in your setup sheet?

Answer 16

Gives the operator flexibility to use a variety of Cutters that may be available

Question 17

What would happen if a Cutters use that is outside the acceptable range?

Answer 17

The machine generates an alarm

Question 18

Which G-Code is for climb milling and which is for conventional Milling?

Answer 18

G41

G42

Question 19

When is a D word used?

Answer 19

Must be included in the instating command

Question 20

Can the instating command be performed at rapid?

Answer 20

Yes, if the Milling cutter remains clear of the workpiece during this motion otherwise use linear interpolation.

Question 21

What type of motion is recommended to avoid a witness mark?

Answer 21

Arc out motion

Question 22

Does cutter compensation eliminate the need to do trig?

Answer 22

No, you may need to do some trigonometry