About pick and place machine mounting precision

The SMT production and processing industry has two definitions of placement accuracy and repeatability. The positioning accuracy is also called accuracy in some industries. In terms of the intention, the placement machine precision refers to the mechanical precision and Z-axis rotation precision of the X and Y-axis navigation movement of the placement machine, which can be characterized by resolution, positioning accuracy and repeatability.

Positioning accuracy of the placement machine: The positioning accuracy refers to the position of the component to be patched and the position of the component in the patch file. For example, the placement of the components of the placement machine is 0 and 0, then the positioning accuracy is the actual sticker. The value of the deviation from the coordinates of the point.

Mounter repeatability: Generally speaking, for example, the placement machine component coordinate values are 0 and 0, and the placement is repeated several times, and the deviation value between each time is the repeat precision. To be precise, each motion system's X-navigation, Y-navigation, and Z have their own repeatability. The combined results reflect the placement accuracy of the placement machine. Therefore, the placement machine sample accuracy is usually based on the placement machine. Repeated precision to characterize