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技術信息

技術信息

Door to Practical Information

- Shortening the Necessary Alignment-Time -

Do you think that the tact time recently is too long?
Most of the troubles are caused by untaught auto-alignment function.
Alignment with some marks is actually possible, even if some of the steps are omitted.
However, it does not mean that teaching is unnecessary. Why?
The reason why teaching of the auto-alignment is necessary is shown here.

An alignment unit does not know what part of the table and how a work is put on, and where the mark is positioned, and what kind of mark there is.
So you normally should "teach" the alignment unit the information.
The process corresponds to the pattern entry, position entry, and teaching, of NEWLONG's equipment in general.
You probably know what the pattern entry and posirion entry are. What, then, is "teaching"?

Let us imagine the steps of positioning (alignment) first.

  1. The unit recognizes a mark and detects a posirional deviation.
  2. The unit shifts the table "in the direction" of the mark.
  3. The unit repeats steps 1 and 2 until positioning is done.
...When do you think the alignment will be completed? It is just like going round in circles!

"Teach" is a function with which the unit learns the distance of mark-shift through the camera to the distance of table-shift.
Then the unit comes to be able to calculate the necessary distance of the table-shift to the distance and direction of the positional deviation for an actual alignment.
When the calcularion is right, the alignment process completes on the first try, yet without Teaching, which is essential, the calculation is not right and the unit repeats alignment action again and again, and it takes time.
Actually, the number of times the unit has tried alignment for one positioning is displayed on the screen.

alignment screen
"Try no" indicates the number of alignment actions taken for a positioning. And "Time" indicates how long it took to complete a positioning.

This is an alignment screen used for our equipment in general. It depends on the equipment.

Try Teaching if the alignment process is not completed on the first try, and you may be able to shorten the tact!
If the alignment process is not completed on the first try after several times of Teaching, a malfunction may exist, or an overhaul may be needed.


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