Influence of Pressure-Equalizing Groove on Static Load Performance of Aerostatic Guideway
Publish place: Journal of Applied Fluid Mechanics، Vol: 16، Issue: 5
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
View: 103
This Paper With 13 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JAFM-16-5_008
تاریخ نمایه سازی: 20 اسفند 1401
Abstract:
The load capacity and static stiffness of the existing air hydrostatic guideways are relatively low, and the static performance of the air film is degraded when external forces are increased during the process. Therefore, this study considered an aerostatic guideway of an ultra-precision micromachine tool as the research object. Single- and double-row orifice structures were designed on the guideway, and linear, extended, and X-shaped pressure-equalizing groove (PEG) structures with rectangular cross-sections were designed on the working surface of the guideway. By establishing a computational fluid dynamics model of the guideway air film, the pressure contour was obtained through simulation, and finally, the advantages of the double-row orifice structure were determined. Then, the influences of the structure, width, and depth of PEG and the diameter and number of orifices on the load capacity, stiffness, and air consumption were studied, which provided a theoretical basis for improving the load performance of the aerostatic guideway. The results showed that the design of the PEG effectively improved the load performance but increased the air consumption. The extended PEG exhibited the best load performance. When the eccentricity was large, the width of the PEG moderately increased, improving the load capacity and stiffness. While increasing the depth only improved the stiffness, it had little effect on the load capacity and air consumption. When the eccentricity was small, the diameter and number of orifices moderately increased. The experimental data were consistent with the simulation results, demonstrating the accuracy of the simulation method.
Keywords:
Authors
H. Zhang
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing ۲۱۱۸۰۰, China
X. Guan
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing ۲۱۱۸۰۰, China
T. Wang
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing ۲۱۱۸۰۰, China
A. U. Z. Robin
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing ۲۱۱۸۰۰, China
C. H. Mu
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing ۲۱۱۸۰۰, China
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :