Comparing different plunge cylindrical grinding cycles based on workpiece roughness and process vibration

Designing optimal automatic cycles of round grinding based on the synthesis of digital twin technologies and dynamic programming method

“…The control parameters and the relationship with the cutting parameters with the productivity of the operation and the quality of the surface to be treated have been studied by Malkin (1981), Fang et al (2016), Raoufinia et al (2019). As follows from these works, as well as the works of Uhlmann et al (2016), Pereira et al (2009), Liu et al (2017) and Rowe and Ebbrell (2004), programming the flow parameters of the feed loop is a difficult task, because it is necessary to set the number of stages of the cycle, the feed amount at each stage of the cycle, and the distribution of the allowance along the cycle steps. In addition to step-by-step feed cycles, all other cutting parameters are programmed in the control program which includes the speed of the grinding wheel and the work-P. P. Pereverzev et al: Designing optimal automatic cycles of round grinding piece, the tool characteristics, its overrun and other parameters depending on the type of grinding.…”

“…A literature review surveys books, scientific articles and other sources of relevant information, is refers to many scientists have been engaged in studying the theory of designing optimal grinding cycles for CNC machines of operational performance management, when designing an operation for a CNC machine, the greatest difficulties occur at the stage when the technologist assigns cutting modes and projects a feed switching cycle, depending on the remaining part of the allowance. In the process of designing the grinding operation, the technologist should strive to de-sign optimal cycle parameters that will ensure the maximum productivity of machining the batch of parts, taking into account the following technological factors and requirements noted in the works of Cahill et al (2015), Lur'e (1979, , Amitay et al (1989), Phan et al (2011), Pereverzev and Akintseva (2015), Akintseva and Pereverzev (2017), Alagumurthi et al (2007), Lee et al (2006), Krajnik et al (2008), Bertsekas (1995), Lee (2008), Nishimura et al (1989), and Hashimoto and Lahoti (2004). However, none of the papers considers the improvement of the design quality of the optimum grinding cycles in terms of their resistance to variable processing conditions existing in real circular grinding operations performed on CNC machines.…”

Modeling Grinding Processes as Micro-Machining Operation

“…Despite its low material removal rate, the grinding process is the most common way to obtain smooth surfaces. In order to improve the process productivity and product quality, a number of researches have sought to promote different techniques and sensors for monitoring the grinding process [1,2,5,6,7].Grinding is one of the most employed finish processes for the manufacturing of precision workpieces, even being a low technology machining process, when compared to conventional machining processes like drilling, milling etc. Its performance depends upon the operator's ability and sensibility and the grinding wheel machining conditions [2].Grinding is a material removal and surface generation process used to shape and finish components made of metals and other materials.…”

“…Grinding is widely used for final machining of components requiring smooth surfaces and precise tolerances. Extensive research conducted during the past 40 years has provided a relatively clear understanding of the many diverse aspects of the grinding process [1,2,3]. Grinding is typically utilized as a finishing process, therefore any mistake that damage the workpiece are costly and almost certainly irreversible [4].…”

The effects of spark-out on flatness in steel grinding

“…Although the dimensional accuracy was reached in a shorter time than when using a conventional method, that study did not describe how it affects surface roughness and roundness. Using a three-phase in-feed grinding procedure, Pereira et al (2009) compensated for elastic deformations and tested his results against conventional grinding procedure with spark-out. According to their results, rougher surfaces were obtained by a three-phase setup than those obtained by spark-out unless the in-feed rates were small in all three phases.…”