scholarly journals Preparation time and sealing effect of cavities prepared by an ultrasonic device and a high-speed diamond rotary cutting system

2007 ◽  
Vol 49 (3) ◽  
pp. 207-211 ◽  
Author(s):  
Áurea S. B. Vieira ◽  
Márcia P. A. dos Santos ◽  
Lívia A. A. Antunes ◽  
Laura G. Primo ◽  
Lucianne C. Maia
Keyword(s):  
High Speed ◽  
Preparation Time ◽  
Ultrasonic Device ◽  
Rotary Cutting ◽  
Cutting System

scholarly journals DEVELOPMENT OF ELECTRONIC CAM MOTION CONTROL FOR SYNCHRONOUS CUTTING SYSTEM

2019 ◽  
Vol 1 (1) ◽  
pp. 22-26
Author(s):  
Adi Setiadi ◽  
Hanny J Berchmans
Keyword(s):  
Motion Control ◽  
High Speed ◽  
Electronic Control ◽  
Control Performance ◽  
Motion Controller ◽  
Electronic Motion ◽  
Rotary Cutting ◽  
Speed Accuracy ◽  
Cutting System ◽  
Precision Test

Before the introduction of electronic motion controls, the traditional mechanical camwas the best approach to be used in applications that perform repetitive operations. Where theunique feature of the cam system is that the master-follower relationship is always repeated.When the electronic motion control system was introduced, the ability to duplicate the functionof the mechanical cam becomes possible by electronic control drives called electronic cams.Limitation of speed, accuracy, and random space are some of the problems faced by mechanicalcam. This study made a prototype of the high-speed rotary synchronous cutting system usingelectronic cam feature of motion controller Yaskawa MP-3000 Series with Sigma-7 servosystem. This study has obtained and analyzed a model of the high-speed rotary cutting system,successfully controlled the rotary cutter motion and proved an alternative cam motion operationwith electronic cam motion control. Performance and precision test for high-speed system needto be improved for the future study.

scholarly journals A Dynamic Analysis of the Rotary Cutting System of King Grass Shredder

2020 ◽  
Vol 145 ◽  
pp. 02080
Author(s):  
Zunxiang Li ◽  
Ou Zhongqing ◽  
Jiao jing ◽  
Huang xiaohong ◽  
Du jihua
Keyword(s):  
Finite Element ◽  
Critical Speed ◽  
Great Influence ◽  
Second Order ◽  
Belt Drive ◽  
Finite Element Models ◽  
Rotating Shaft ◽  
First Order ◽  
Rotary Cutting ◽  
Cutting System

With the rotary cutting system of king grass shredder as the research object, this paper established finite element models for rotating shaft, rotating shaft-belt pulley, rotating shaft-rotary cutting part and rotary cutting system and analyzed the influences of belt pulley and rotary cutting part on the dynamic characteristics of rotary cutting system. The results showed that the belt pulley and rotary cutting part had a great influence on the second order critical speed of rotary cutting system, and the rotary cutting part had a greater influence on the critical speed of first order forward precession than the belt pulley. Meanwhile, the critical speed of rotary cutting system that conformed to facts was calculated. There was a big difference between its first order and second order critical speeds, but the critical speed of first order backward precession was lower. Finally, it was found after analysis that the natural frequency of rotary cutting system was lower than the vibration frequency induced by belt drive, so the shredder can run safely.

Design and Simulation of Cutting Optimization and Controller for the Diamond Multi-Wire Sawing System

2011 ◽  
Vol 58-60 ◽  
pp. 2331-2337
Author(s):  
Chih Cheng Peng ◽  
Thong Shing Hwang ◽  
Yi Jing Lin ◽  
Wei Ren Lai ◽  
Nanjou Lin ◽  
...  
Keyword(s):  
Taguchi Method ◽  
Rate Control ◽  
Chemical Mechanical Polishing ◽  
High Speed ◽  
Controller Design ◽  
Rate Equations ◽  
Signal To Noise ◽  
Cutting Rate ◽  
Cutting System ◽  
Ablation Characteristics

The purpose of this paper is to investigate the effect of ablation parameters on the ablation characteristics for the fixed diamond multi-wire sawing by using Taguchi method. Meanwhile, using the optimal ablation parameters, we accomplish the cutting dynamic analysis and controller design of the diamond multi-wire sawing system. In this paper, we apply the Chemical Mechanical Polishing (CMP) theorem to derive the ingot profile and cutting rate equations of the diamond multi-wire sawing system. The characteristics discussed in this paper include ingot profile variance, cutting rate. The ablation parameters are tension force, wire velocity, cutting force, width of the kerf. The orthogonal array, signal-to-noise (S/N) ratio and analysis of variance (ANOVA) are employed to analyze the effect of these ablation parameters. In the meantime, we use the optimal ablation parameters to accomplish the controller design of the diamond multi-wire sawing system, include diamond high-speed control of the main roller in the cutting system, cutting rate control and the moving wire bow angle holding.

A Study on Driven-Type Rotary Cutting for Finish Turning of Carburized Hardened Steel

2012 ◽  
Vol 523-524 ◽  
pp. 250-255 ◽  
Author(s):  
Hideharu Kato ◽  
Tatsuya Shikimura ◽  
Yoshitaka Morimoto ◽  
Kazuhiro Shintani ◽  
Toshio Inoue ◽  
...  
Keyword(s):  
Tool Wear ◽  
Feed Rate ◽  
High Speed ◽  
High Efficiency ◽  
Single Point ◽  
Hardened Steel ◽  
Cutting Edge ◽  
Finish Turning ◽  
Cutting Length ◽  
Rotary Cutting

Recently, cutting has replaced grinding in the finish processing of hardened steel. However, tool damage is a major problem in high-efficiency operations that use high-speed cutting and high feed rate conditions instead of the present cutting conditions. Therefore, the examination of a new cutting technique that can realize high-efficiency cutting is desired. In this study, the effects and efficiency of driven rotary cutting are investigated in the finish turning of carburized hardened steel. Based on the results, flaking occurs at the cutting edge at a short cutting length of 0.2 km using single-point turning. On the other hand, even if the cutting length amounts to 1.5 km, the tool wear width without flaking is small in the case of a driven rotary tool. Additionally, the tool wear is uniformly distributed along the circumference of the cutting edge. Furthermore, based on an examination of high-efficiency processing by increasing the feed rate, it is clarified that a feed rate of 0.3 mm/rev is the optimum condition from the viewpoint of wear resistance and surface roughness. Additionally, even if the cutting length amounts to 5.0 km for this condition, the flank wear width is as small as 0.04 mm, and the tool wear progresses gradually.

Electronic Subdividing Method for Linear Encoder of High Speed Position Detection

2006 ◽  
Vol 315-316 ◽  
pp. 230-234
Author(s):  
W. Zuo ◽  
Jing Feng Zhi ◽  
S.T. Huang ◽  
G.M. Zhao
Keyword(s):  
Phase Shift ◽  
High Speed ◽  
Position Measurement ◽  
System A ◽  
Position Detection ◽  
Key Technologies ◽  
Linear Encoder ◽  
Cutting System ◽  
Speed Response

This paper presents an electronic subdviving method for linear encoder of high speed position detection. The method aims to enhance the resolution of position measurement and improve the precision of noncircular component cutting system. A 20-subdividing circuit based on resistor chain phase shift is researched and implemented, and some key technologies are discussed. The method is proved to be successful in raising the resolution and precision with a high speed response. The experiment result proves that electronic subdividing method is doable and effective to raise the resolution of the existing system.

scholarly journals Study on High-Efficiency Finish Turning of Carburized Hardened Steel with Driven Rotary Cutting

2013 ◽  
Vol 7 (3) ◽  
pp. 321-328 ◽  
Author(s):  
Hideharu Kato ◽  
◽  
Tatsuya Shikimura ◽  
Yoshitaka Morimoto ◽  
Kazuhiro Shintani ◽  
...  
Keyword(s):  
Tool Wear ◽  
Feed Rate ◽  
High Speed ◽  
High Efficiency ◽  
Single Point ◽  
Hardened Steel ◽  
Cutting Edge ◽  
Finish Turning ◽  
Cutting Length ◽  
Rotary Cutting

Recently, cutting has replaced grinding in the finish processing of hardened steel. However, tool damage is a major problem in high-efficiency operations that use high-speed cutting and high-feed rate conditions instead of the present cutting conditions. Therefore, the examination of a new cutting technique that can realize high-efficiency cutting is desired. In this study, the effects and efficiency of driven rotary cutting are investigated in the finish turning of carburized hardened steel. Based on the results, flaking occurs when single-point turning is used at the cutting edge at a short cutting length of 0.2 km. On the other hand, even if the cutting length amounts to 5.0 km, the tool wear width without flaking is small in the case of driven rotary cutting. Additionally, the tool wear is uniformly distributed along the circumference of the cutting edge. Furthermore, based on an examination of high-efficiency processing by increasing the feed rate, it is found that a feed rate of 0.3 mm/rev is the optimum condition from the viewpoint of wear resistance and surface roughness. Additionally, even if the cutting length amounts to 5.0 km for this condition, the flank wear is as narrow as 0.04 mm, and the tool wear progresses gradually.

High-Speed Photogrammetry Application for Percussive Rotary Cutting Tests of Deep-Ocean Cobalt-Rich Crusts

2014 ◽  
Vol 568-570 ◽  
pp. 1753-1756
Author(s):  
Hao Zheng ◽  
Shao Jun Liu ◽  
Hai Ren Gan ◽  
Ning Yang
Keyword(s):  
Torsional Vibration ◽  
Vibration Amplitude ◽  
High Speed ◽  
Deep Ocean ◽  
Processing Technique ◽  
High Precision Measurement ◽  
Wide Range ◽  
Rotary Cutting ◽  
Cutting Processes ◽  
The Impact

The cutting processes of drill rod under different surge pressures, rotate pressures and propulsion forces were recorded by the high-speed camera in the hydraulic percussive rotary cutting tests of deep-ocean cobalt-rich crusts. Meanwhile, the curves of impact vibration, torsional vibration and frame vibration during the cutting processes were plotted by digital picture processing technique. The impact frequency, torsional vibration frequency, torsional vibration amplitude, vibration amplitude of drill rod and the frame were calculated. The photogrammetry results are generally in agreement with the traditional test results. High-speed photogrammetry is a non-contact, wide range application, and high precision measurement, and the cutting process can be described visually and adequately.

High-speed rotary cutting of difficult-to-cut materials on multitasking lathe

2008 ◽  
Vol 48 (7-8) ◽  
pp. 841-850 ◽  
Author(s):  
Hiroyuki Sasahara ◽  
Atsushi Kato ◽  
Hiroshi Nakajima ◽  
Hiromasa Yamamoto ◽  
Toshiyuki Muraki ◽  
...  
Keyword(s):  
High Speed ◽  
Rotary Cutting

scholarly journals Retrieval of Separated NiTi Instrument in Severe Curved Canal using an Ultrasonic Device: A Case Report using an Ultrasonic Device: A Case Report

2018 ◽  
Vol 25 (3) ◽  
Author(s):  
Aditya W. Putranto ◽  
◽  
Ike D. Maharti ◽  
Aryo Megantoro ◽  
Shalina Ricardo ◽  
...  
Keyword(s):  
Case Report ◽  
High Speed ◽  
Operating Microscope ◽  
Suction Device ◽  
Ultrasonic Device ◽  
Rubber Dam ◽  
General Dentist ◽  
Gain Access

Objective: We describe how to assess the degree of canal curvature and manage a separated instrument using an ultrasonic device. Case Report: A 24-year-old female was referred by a general dentist for an accidentally separated Protaper F2 instrument. The mesiobuccal canal was enlarged and the separated instrument could be visualized via the dental operating microscope. Preoperative radiography revealed a separated endodontic instrument at the middle to apical third of the mesiobuccal canal. Mesiobuccal canal curvature measured 66°. After rubber dam isolation, a specific ultrasonic tip and the dental operating microscope were used to gain access around the separated instrument until it loosened. The separated instrument was agitated and accidentally sucked into the high-speed suction device. The canal was evaluated with higher magnification via the dental operating microscope and postoperative radiographs were taken to confirm removal. Conclusion: Retrieval of a separated instrument in the curved canal is effective using a specific ultrasonic device plus a dental operating microscope

Characterization of Cutting Temperature and Ignition Phenomena of Magnesium Chip Using Infrared Imaging

2012 ◽  
Vol 588-589 ◽  
pp. 1744-1747 ◽  
Author(s):  
S.R. Sulistiyanti ◽  
Yanuar Burhanudin ◽  
Suryadiwansa Harun
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Infrared Imaging ◽  
Cutting Temperature ◽  
Optimum Conditions ◽  
Measurement Temperature ◽  
Imaging Methods ◽  
Rotary Cutting

In this paper, we report our experimentation about measurement temperature of ignition cuts and chip phenomenon using infrared imaging methods, to model and simulate machine rotary cutting tool system. Finally this research was obtained of the optimum conditions expected of cutting magnesium at high speed and without coolant.

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