Research on Vibration Characteristics of Hardened Steel Precision Machining Process

Guang Jun Chen; Yu Shuo Wang; Rui Xu; Xian Li Liu

doi:10.4028/www.scientific.net/KEM.621.63

Paper Titles

A Strategy for On-Line Monitoring the Crosslinking Degree of 3D Printing Hydrogel Fiber Based on Dual-Threshold Enhancement Method
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Clonal Selection Algorithm Based Optimization of Heating Channels for Variotherm Injection Mold
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Research on the Formation of Dimensional Chain for Thread Hob of Double-Roller Machine Rolling Thread by Axial Feed
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Application and Developing Trends of Mechanical Tiling Technology in the Laser Fusion Device
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Research on Vibration Characteristics of Hardened Steel Precision Machining Process
p.63

Effects of Cutting Speed on the Wear Properties of TiAlN PVD Coated Tool for Cutting P20 Mold Steel
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Effect of Cutting Speed on Wear Property of TiAlN PVD Coated Tools in High-Speed Milling of AISI P20 Mold Steel
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Study on the Strain Hardening Exponent N under the Ultrasonic Action and Establishment of Constitutive Equation
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Effect of Injection Parameters on Warpage and Sink Index of High-Gloss Injection Parts
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Research on Vibration Characteristics of Hardened Steel Precision Machining Process

Abstract:

Hard cutting technology is a green cutting technology of broad application prospect, but hard cutting is more likely to produce vibration compared with traditional cutting, and the production efficiency, machining quality, environment, cost and machine tools and tool life will be affected by the precision in the process of hard cutting chatter. Turning hardened steel GCr15 cylindrical bar using PCBN inserts on the lathe CAK6150DI analyzed the cutting vibration signal characteristic in the different state of cutting tool; analyzed the related features of dynamic cutting force and cutting vibration signals; and observed the microstructure on the machined surface. Analysis results show that the vibration of smooth cutting state is given mainly with forced vibration and noise, vibration signals are produced with the typical characteristics of high range frequency in frequency zone, disperse frequency domain energy; When the cutting chatter, strong self-excited vibration appeared and occupied the main position of vibration signal energy, frequency domain energy is concentrated in nearly natural frequency of the main vibration system of the lower cutting. The results of the study can provide theoretical guidance for the control of vibration in hardened cutting process.