Flying probe tester

Abstract

A flying probe tester comprises a substrate, two parallel X-axes, two Y-axes and two Z-axes. Each X-axis comprises a first guide rail, two first motors and two first screw, the two first screws are parallel with the first guide rail, the two first motors are located at one ends, which are relatively distant, of the two first screws, and a drive shaft of each first motor is coaxially connected with the corresponding first screw. Each Y-axis comprises a second guide rail, two connecting plates and two first slider, two ends of the second guide rail are fixedly connected with the two connecting plates respectively, the two first sliders are fixed on two surfaces, opposite to the second guide rail, of the two connecting plates respectively, the first sliders can slide along the first guide rail, and the first screws penetrate through the first sliders. The two Z-axes are disposed on the two Y-axes. One first slider, close to the corresponding first motor, of each Y-axis is provided with a screw hole connected with the corresponding screw in a threaded manner, and the other first slider is provided with a guide hole allowing for penetration of the corresponding screw. The flying probe tester is low in cost and high in motion precision.

Description

【Technical field】 [0001] The invention relates to a printed circuit board testing device, in particular to a flying probe testing machine. 【Background technique】 [0002] The flying probe testing machine is installed on the X-axis and Y-axis with motor-driven probes that can move independently and quickly, and uses the controllable movement of the probes in the Z-axis direction to contact the solder joints of the PCB board and perform electrical measurements. equipment. Due to the functional requirements of the flying probe testing machine, the two ends of the Y-axis are generally erected on two X-axes respectively, and the span is relatively large, driven by two motors on the X-axis (dual drive) or by a single X-axis Motor drive (single drive). In order to improve testing efficiency, flying probe testing machines generally have multiple probes, and the number of X-Y axes increases accordingly. It is because the number of axes of the flying probe testing machine is large,...

AI Technical Summary

Problems solved by technology

It is because the number of axes of the flying probe testing machine is large, and the cost of dual drive for the Y axis is very high. In addition to the limitation of the installation space, multiple Y axes generally need to share the X axis (that is, multiple Y axes are installed on one X axis). axis), the feasibility of using dual drive on the Y axis is greatly restricted

As the line width and line spacing of the PCB board become smaller and smaller, the requirements for the motion accuracy of the flying probe test machine are getting higher and higher, while the motion accuracy of the traditional flying probe test machine cannot meet the requirements.

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