Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario descargar pdf (Pagina 88)

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Chapter 3

Offset Tables and Setup

3-16

The measure feature offers an easy method of establishing wheel length

offsets. This feature is not available for generating any radius offset data.

The control, not the operator, computes the wheel length offsets, and enters

these values in the wheel geometry of fset table. You can only perform the

measure operation on one axis at a time.

To enter wheel length offsets using measure, follow these steps:

1. Establish a fixed machine position. This position can be any fixed,

non-movable location on the machine that the wheel can be jogged

against consistently. Determine the value ofthis location at the gauge

point with no wheel offsets active.

Important: No wheel offsets s hould be active. The value of this

position at the gauge point, located in the work coordinate system,

must be recorded.

You key in this value in steps 6 and 7.

2. Access the wheel geometry offset table {WHEEL GEOMET}.

3. Cursor down to the offs et that you want to change. You can select to

display the offset in either inch or metric measurements.

4. Using incremental, continuous or handwheel mode, jog the wheel

surface to be measured against the fixed location determined in step 1

on the axis being measured.

5. Press the {MEASURE} softkey.

6. Key in the coordinate value of the fixed location determined in step 1.

This coordinate value must be i n the same units as the control is

currently operating in. For example, you cannot key i n an inch value

when the control is in metric mode (G71).

If the same length offset must be transferred to other axes, they must

be keyed in manually. If the offset must be copied from offset

number to offset number, you can use the {COPY OF FSET} feature.

7. Press the [TRANSMIT] key.

The control now subtracts the keyed in location from the current

wheel position and enters this difference as the length offset value in

the table.

3.5

Set Offset Data Using

{MEASURE}

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 819 820

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Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 88

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