Vibration Tests of the Processing Shaft Cascading Structure in High Speed and High Precision PCB Drilling Machine

Abstract:

It is necessary to study the dynamic characteristics of the structure of processing shaft cascade in high speed and high precision PCB drilling machine because of its great impact on the drilling precision. As a basic part, the dynamic characteristics of the structure of cascade depend on the dynamic characteristics of the Z-axis floor. Based on it, firstly, the free mode test is conducted on the Z-axis floor, the same as the modes that it is just set up on the guide rail, the cascade is added and the motor spindle has been added on the Z-axis floor. From the four situations, the modal pa-rameters are gained in the tests. Then the ODS test is carried out and the vibration is analyzed in the real situation. The vibration tests of the cascade comprehensively acquire dynamic characteristics from the Z-axis floor before being assembled to the Z-axis floor which is entirely cascaded on the Z axis. Acknowledge of the impact that the vibrations bring to the drilling precision of the drilling machine provides the direction of improving the structure.

• Periodical: Applied Mechanics and Materials (Volumes 246-247)
• Pages: 1263-1267
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.246-247.1263
• Online since: December 2012
• Authors: Feng Gong, Yan Ping Tan, Ji Bin Li
• Keywords: Experimental Modal Analysis, ODS, Z-Axis Floor

References

[1] DU Y (2002). In: The Experimental Modal Analysis Method's Application in Surface Grinder Type MSY7115 and Its dynamical Modification. Kunming University of Science and Technology.

[2] Lin J (2009) The status and challenge of PCB in China. Printed Circuit Information 1: 16-19.

[3] Bai H, Guo J (2001) Modal Analysis Theory and Testing. Beijing Institute of Technology Press, Beijing.