Cycle 1493 EXTRUSION PROBING

ISO programming

G1493

Application

cyc1493

Cycle 1493 allows you to repeat the touch points of specific touch probe cycles along a straight line. In the cycle, you define the direction and the length of the extrusion, as well as the number of extrusion points.

The repetitions allow you, for example, to perform multiple measurements at different heights and to determine deviations based on the deflection of the tool. You can also use the extrusion to increase the accuracy during probing. Multiple measuring points help you ascertain contamination on the workpiece or rough surfaces.

In order to activate the repetition of specific touch points, you need to define Cycle 1493 before the probing cycle. Depending on the definition, this cycle will remain active for only the next cycle or for the entire NC program. The control interprets the extrusion in the input coordinate system I-CS.

Result parameters

The control stores the results of the probing cycle in the following Q parameters:

Q parameter
number

Meaning

Q970

Maximum deviation from the ideal line of touch point 1

Q971

Maximum deviation from the ideal line of touch point 2

Q972

Maximum deviation from the ideal line of touch point 3

Q973

Maximum deviation of diameter 1

Q974

Maximum deviation of diameter 2

QS parameter

In addition to saving the results of the probing cycle in the return parameters Q97x, the control saves individual results to the QS parameters QS97x. The control saves the results of all measuring points from one extrusion in the corresponding QS parameters. Each result is ten characters long and the results are separated from each other by a blank space. This makes it easy for the control to convert the individual values in the NC program via string processing and use them for special automated evaluations.

Result in a QS parameter:

QS970 = "0.12345678 -1.1234567 -2.1234567 -3.12345678"

String functions

Log function

Once probing has finished, the control generates a log file in HTML format. The log file contains the results of the 3D deviation in graphical and tabular form. The control saves the log file in the same folder in which the NC program is located.

  • The log file contains the following data in the main axis, secondary axis and tool axis depending on the selected cycle (e.g., circle center point and diameter):
  • Actual probing direction (as a vector in the input system). The value of the vector corresponds to the configured probing path
  • Defined nominal coordinate
  • Upper and lower dimensions, as well as the determined deviation along the normal vector
  • Measured actual coordinate
  • Color coding of the values:
    • Green: Good
    • Orange: Rework
    • Red: Scrap
  • Extrusion points

Extrusion points:

The horizontal axis represents the direction for the extrusion. The blue points are the individual measuring points. The red lines indicate the lower limit and the upper limit of the dimensions. If a value violates a specified tolerance, the control will show the area in red color in the graphic.

Notes

  • This cycle can only be executed in the FUNCTION MODE MILL machining mode.
  • If Q1145 > 0 and Q1146 = 0, then the control will perform the number of extrusion points at the same position.
  • If you use Cycle 1401 CIRCLE PROBING or 1411 PROBING TWO CIRCLES to perform an extrusion, the direction for the extrusion must be Q1140 = +3; otherwise, the control will output an error message.

Cycle parameters

Help graphic

Parameter

cyc1493_1

Q1140 Direction for extrusion (1-3)?

1: Extrusion in the direction of the main axis

2: Extrusion in the direction of the secondary axis

3: Extrusion in the direction of the tool axis

Input: 1, 2, 3

Q1145 Number of extrusion points?

Number of measuring points that the cycle repeats over the length of the extrusion Q1146.

Input: 1...99

cyc1493_2

Q1146 Length of extrusion?

Length over which the measuring points are repeated.

Input: –99...+99

Q1149 Extrusion: Modal duration?

Effect of the cycle:

0: The extrusion is effective for only the next cycle.

1: The extrusion is effective until the end of the NC program.

Input: –99...+99

NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.

  • Change the following contents as needed:
  • Tools
  • Cutting parameters
  • Feed rates
  • Clearance height or safe position
  • Machine-specific positions, e.g. with M91
  • Paths of program calls

Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.

In addition, test the NC programs using the simulation before the actual program run.

 
Tip

With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.

Example

11 TCH PROBE 1493 EXTRUSION PROBING ~

Q1140=+3

;EXTRUSION DIRECTION ~

Q1145=+1

;EXTRUSION POINTS ~

Q1146=+0

;EXTRUSION LENGTH ~

Q1149=+0

;EXTRUSION MODAL