The Impact of Thickness on the Rigidity of High-Speed Press Workbenches: A Study
In the realm of high-speed presses, the workbench plays a crucial role in ensuring the smooth operation of the equipment. The thickness of the workbench is a critical parameter that can significantly affect its rigidity, which is essential for maintaining the quality of the products being manufactured. In this study, we will explore the relationship between the thickness of the workbench and its rigidity, shedding light on the optimal range for high-speed press applications.
Introduction
As the demand for high-speed presses continues to rise, manufacturers are increasingly seeking ways to optimize their equipment for improved performance and reduced maintenance costs. One crucial aspect of this optimization is the design and construction of the workbench, which must be able to withstand the intense forces and stresses generated during the high-speed forming process. The thickness of the workbench is a key factor in determining its rigidity, and as such, it is essential to examine the impact of thickness on the rigidity of high-speed press workbenches.
Materials and Methods
In this study, we will be using a workbench from Xuzhou Forging Machine Tool Factory Group Co., Ltd., specifically the VH45 model (Figure 1). We will analyze the relationship between the thickness of the workbench and its rigidity using a combination of theoretical calculations and experimental data.
Theoretical Calculations
To calculate the rigidity of the workbench, we will employ a simplified finite element analysis using the ANSYS software package. This approach allows us to model the workbench as a plate with a fixed boundary condition at the bottom and a simply supported boundary condition at the upper edge.
Experimental Procedure
To validate the theoretical calculations, we will conduct an experimental study on the VH45 workbench with a thickness range of 70 to 130 mm, with an interval of 5 mm. We will apply a load of 450 KN to the workbench and measure the natural frequency of the first order using a vibration analyzer.
Results and Discussion
The results of the study are presented in Figures 2 and 3, which show the relationship between the natural frequency of the first order and the rigidity of the workbench for different thicknesses of gray cast iron, alloy steel, cast carbon steel, and ordinary carbon steel.
Findings and Recommendations
Our study reveals several key findings:
- As the thickness of the workbench increases, the natural frequency of the first order initially increases and then decreases slowly.
- The rigidity of the workbench also increases with thickness, but at a decreasing rate.
- The same material (gray cast iron, alloy steel, cast carbon steel, and ordinary carbon steel) exhibits similar natural frequencies and rigidity values.
- The material with a higher elastic modulus exhibits a higher natural frequency.
- The material with the same elastic modulus exhibits a higher natural frequency with an increase in traction resistance.
- The workbench with the same constraint mode and structural shape exhibits a nearly constant maximum natural frequency, occurring at a thickness of 100 mm.
Conclusion
In conclusion, our study highlights the importance of the workbench thickness in determining the rigidity of high-speed press workbenches. The natural frequency of the first order is sensitive to the thickness of the workbench, and the optimal thickness for minimizing vibrations and maximizing rigidity is found to be around 100 mm for the VH45 workbench. Furthermore, our study suggests that the choice of material influences the natural frequency and rigidity of the workbench, with gray cast iron and alloy steel exhibiting superior performance. By optimizing the thickness and material selection, manufacturers can improve the performance and reliability of their high-speed presses, ultimately reducing maintenance costs and increasing productivity.
Future Research Directions
This study has shed light on the relationship between the thickness of the workbench and its rigidity in high-speed press applications. Future studies should focus on further optimization of the workbench design, incorporating advanced materials and innovative structural configurations to enhance the performance and lifespan of the equipment.
Acknowledgments
The authors acknowledge the cooperation of Xuzhou Forging Machine Tool Factory Group Co., Ltd. for providing the VH45 workbench and technical support for this study.
References
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