SuZhou Tonkida Electromechanical Technology Co., Ltd Professional SMT whole line supplier

First, the accuracy of the placement machine

There are two types of accuracy definition: placement accuracy and repeatability.

Positioning accuracy is called precision in some industries. Originally speaking, the accuracy of the placement machine refers to the mechanical accuracy of the navigation 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 (precision), repetition accuracy, and resolution.

1, positioning accuracy

Positioning accuracy refers to the deviation between the actual position of the component to be mounted and the position of the component set by the chip file. For example, if the coordinate value of the mounter mounting component is (0,0), then the precision of the fixed wei position is the deviation value between the actual mount value and the coordinate of the point.

2. Repetition accuracy

For example, the coordinate value of the mounter mounting component is (0,0), and the point mounting is repeated several times, and the deviation value between each time is the repetition accuracy. To be precise, the X navigation, l, navigation and p of each motion system have their own repetition accuracy, and their comprehensive results reflect the placement accuracy of the placement machine, so the sample accuracy of the placement machine is usually characterized by the repetition accuracy of the placement machine.

Second, the accuracy of the placement machine

1. Medium and low speed patch machine

The theoretical mounting speed of the medium and low speed SMT machine is below 30,000 pieces/h (chip components). Medium and low speed chip machine is generally referred to as medium speed chip machine, also known as mid-range chip machine. Most of the medium speed mounter adopts the arch structure, which is relatively simple in structure, poor in mounting accuracy, small in footprint, and low in environmental requirements. Generally, cost savings will be considered in the design and manufacturing, and strive to meet the needs of general consumer electronics manufacturing and general industrial and commercial electronic equipment manufacturing, so that the mounting capacity and cost are equal. Due to the above reasons, the medium speed SMT machine is widely used in some small and medium-sized electronic production and processing enterprises, R & D design centers and production enterprises with multi-variety and small-batch products.

2, high-speed placement machine

The theoretical mounting speed of the high-speed SMT machine is 30 000 ~ 60 000 pieces/h per hour. High-speed SMT machine is mainly used to mount small chip components and small integrated components, and some high-speed machines also have the function of small mount spherical matrix components (BGA). The turret structure commonly used in the structure of high-speed chip mounter is also more composite structure. The design of high-speed machine mainly considers the mounting speed and stability, and realizes the high-speed mounting under the accuracy of the micro-chip component mounting. High speed SMT machines are widely used in large electronics manufacturing enterprises and some professional original equipment manufacturing enterprises (OEM).