Hanwha Pick and Place Machine | Placement Accuracy

 

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There are two definitions of pick and place machine accuracy: placement accuracy and repeatability.

Positioning accuracy is called absolute accuracy in some industries. In essence, the accuracy of the placement machine refers to the mechanical accuracy of the placement movement of the X and Y axes of the placement machine and the rotation accuracy of the Z axis. It can be characterized by positioning accuracy (absolute accuracy), repeat accuracy, and resolution.

 

1. Positioning accuracy (absolute accuracy)

Positioning accuracy refers to the deviation between the actual position of the component to be placed and the position of the component set by the placement file. For example, the coordinate value of the component mounter of the placement machine is (0, 0), then the positioning accuracy is the deviation between the actual placement value and the coordinates of the point.

 

2. Repeatability

In simple terms, for example, the coordinate value of the component mounter of the placement machine is (0,0), and repeating this point for multiple times, the deviation between each time is the repeat accuracy. To be precise, the X navigation and navigation of each motion system have their own repeatability. The comprehensive result reflects the placement accuracy of the placement machine. Therefore, the accuracy of the placement sample is usually the repeatability of the placement machine. To characterize.

 

3.Resolution

At present in the SMT industry, the resolution of the placement machine generally refers to the R-axis rotation resolution. When the chip head receives a pulse command signal, the R axis of the chip head will only rotate by the number of degrees. Speak more plainly. The degree of R-axis rotation is called the R-axis rotation resolution. The accuracy of the chip in actual production refers to the deviation between the alignment of the device pins and the corresponding pads.

The speed of the above-mentioned pick and place machine is mainly the speed of the chip mounter of several famous foreign chip mounters. For the production of LED chip mounters that can reach 16,000 pieces / hour, it is even a high-speed LED chip mounter.

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