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A study on the surface grinding process of the SUJ2 steel using CBN slotted grinding wheel
Using slotted grinding wheel in machining is a new approach in grinding technology. The slotted grinding wheel is used to improve the introduction of cool lubricant into the cutting zone, improve chip release condition and heat release condition during machining, thereby facilitating to improve the efficiency of the grinding process. However, up to now, the studies that are performed using this type of grinding wheel is very limited. To contribute some results to this rather new research direction, in this article we present the grinding process of SUJ2 steel using CBN slotted grinding wheel. The orthogonal Taguchi matrix with nine experiments was used to design the experimental matrix with three input parameters including workpiece velocity, feed rate, and depth of cut. The output parameters that were used to evaluate the quality and effectiveness of the grinding process were surface roughness, system vibrations in X, Y, Z directions, and the material removal rate. In surface grinding process using CBN slotted grinding wheel, all three input parameters (workpiece velocity, feed rate, and depth of cut) have a significant influence on the surface roughness, vibration. In which, the feed rate has the most influence on the output parameters. The second factor that influenced on the output parameter was the depth of cut. The workpiece velocity has the smallest influence on the output parameters. Data Envelopment Analysis Based Ranking (DEAR) method was used to solve the multi-objective optimization problem in surface grinding process. By applying this method, the optimal value of input parameter that were determined to obtain the minimum values of surface roughness and system vibration components, and to obtain the maximum of material removal rate. The optimum values of input parameters were the workpiece velocity of 15 m/min, the feed rate of 4 mm/stroke, and cutting depth of 0.015 mm. DEAR method can be applied to improve the quality and the effectiveness of the grinding process by reducing the surface roughness and system vibration components and increasing the material removal rate.
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What's the best way to achieve high roundness accuracies in thin-walled rings and sleeves? For example, when a roller bearing raceway has to be extremely precise to guarantee a long service life? How can external and internal machining be efficiently realized in one clamping so that such rings can also be manufactured cost-effectively? STUDER has both the answers and the necessary manufacturing process: Cylindrical grinding with a shoe grinding fixture, or simply said: Shoe grinding!
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Research Progress of Abrasive Groups Ordered Grinding Wheels | Chinese Journal of Mechanical Engineering | Full Text
Because the grinding temperature is high when grinding using conventional disordered grinding wheels, the grinding quality improvement is limited when using single abrasive ordered grinding wheels, and the wheel preparation process is complex and costly when using microstructured grinding wheels, abrasive groups ordered grinding wheels are widely investigated. However, there is a paucity of systematic analyses and comprehensive reviews focused on abrasive groups ordered grinding wheels. Therefore, this paper defines abrasive groups ordered grinding wheels and classifies them, based on their unique characteristics, into groups such as abrasive blocks ordered grinding wheel, fine grain structured grinding wheel, abrasive clusters ordered grinding wheel, and abrasive fibers ordered grinding wheel. We provide an overview of the latest advances in wheel structures, preparation methods, and abrasive selection for various types of abrasive groups ordered grinding wheels. Furthermore, we conduct a comparative analysis of the existing types, significant advantages, and challenges associated with the four types of abrasive groups ordered grinding wheels. Looking ahead, given the potential of abrasive groups ordered grinding wheels in reducing grinding force and temperature, we recommend further exploration of their application in combination with special processing techniques. This could pave the way for the development of machining processes that are more environmentally friendly, energy-efficient, and precise.
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The grinding of slots of different length in VT8 titanium-alloy blanks by means of a highly porous silicon-carbide wheel is investigated.
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