The accuracy of SMT placement includes the positioning accuracy of the placement machine, the repeatability of the placement machine, and the resolution of the placement machine. Through load balancing, in order to improve patch efficiency, some measures are taken to pick up as many configurations of the head as possible. The following small series will introduce the relevant content in detail.

1. The accuracy of SMT placement
1. The positioning accuracy of the placement machine The positioning accuracy
refers to the deviation between the actual position of the components and the position of the components set by the placement machine. There are two factors that affect the placement accuracy. Translation error and rotation error. The translation error mainly comes from the XY axis positioning system, and the rotation error refers to the insufficient accuracy of the component alignment mechanism.

2. The repeatability of the placement machine The repetition accuracy
refers to the repeated placement of the placement machine on a specific coordinate position, and the resulting deviation is the repeatability. Therefore, the sample accuracy given by the smt placement machine is based on the repeatability of the placement machine. Performance.

3. Mounter resolution
After the placement head receives the pulse command signal, the resolution of the R-axis is the resolution of the mounter, the degree of rotation of the R-axis of the placement head, and the resolution of the current good mounter reaches 0.0024/pulse, the resolution can also be simply understood as measuring the smallest increment of machine operation, and measuring the motion accuracy of the machine itself is an important performance index.

Second, improve the efficiency of SMT patch
1. Load balance. In order to ensure that the two SMT placement machines have the same placement time, the number of patch components of the two SMT placement machines is reasonably allocated.

2. The SMT placement machine itself. The SMT placement machine itself has a maximum speed value, but it is usually difficult to achieve this. It has a certain connection with the X/Y structure placement machine. In terms of placement speed, it is necessary to pick up the configuration measures of the head as much as possible. . In addition, during the placement process, the same type of components are put together to reduce the number of assembly parts and save placement time.

The entire production process of the SMT placement machine production line actually involves a lot of equipment, but if any piece of equipment runs too slowly during the processing, it will delay the entire placement process and affect the actual process realization. Therefore, it is necessary to have scientific The theoretical guidance of the system and the need for experienced personnel to operate on site can maximize our expectations.