Search Results - "Gyungho Khim"

A rotary stage in a vacuum using an air bearing by Khim, Gyungho, Park, Chun Hong

“…We present a design for a precision rotary air-bearing stage that can be used as a positioning system in vacuum applications, and evaluate its performance. The…”
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Estimation of friction heat in a linear motion bearing using Box–Behnken design by Jang, Sung-Hyun, Khim, Gyungho, Park, Chun-Hong

“…Heat is generated in a linear motion bearing (LMB) during high velocity movement of a linear motion table. This heat causes deformation of the guide rail and…”
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Prediction and compensation of motion accuracy in a linear motion bearing table by Khim, Gyungho, Park, Chun Hong, Shamoto, Eiji, Kim, Seung Woo

“…In the present research, a corrective machining algorithm is introduced to improve the motion accuracy of linear motion bearing tables. The algorithm commences…”
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Linear ball guide design optimization considering stiffness, friction force, and basic dynamic load rating using particle swarm optimization by Tong, Van-Canh, Khim, Gyungho, Park, Chun-Hong, Hong, Seong-Wook

“…Linear-motion ball guides are one of the most common supporting elements in machine tools. Their design optimization is highly crucial for engineers and users…”
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Analysis on the Pitching Moment in Permanent-Magnet Linear Synchronous Motor for Linear Motion Stage Systems by Kyung-Hun Shin, Seung-Han Lee, Han-Wook Cho, Park, Cheol-Hoon, Jang-Young Choi, Gyungho Khim

“…This paper presents the characteristic analysis and experiment of pitching moment in a high-precision permanent-magnet linear synchronous motor. The pitching…”
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A Method of Calculating Motion Error in a Linear Motion Bearing Stage by Khim, Gyungho, Oh, Jeong Seok, Park, Chun Hong

“…We report a method of calculating the motion error of a linear motion bearing stage. The transfer function method, which exploits reaction forces of individual…”
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A unified geometric error model applicable to all configurations of three-axis machine tools by Nguyen, Quoc-Khanh, Khim, Gyungho, Oh, Jeong Seok, Ro, Seung-Kook

“…Modeling and compensating for geometric errors are important steps for improving the accuracy of three-axis machine tools. The kinematic link between the tool…”
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Explicit modeling and investigation of friction forces in linear motion ball guides by Oh, Kwang-Je, Khim, Gyungho, Park, Chun-Hong, Chung, Sung-Chong

“…Friction force of the linear motion ball guide (LMBG) with preload is important to predict the mechanical efficiency, thermal deformation, and stiffness…”
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Construction and validation of a theoretical model of the stiffness matrix of a linear ball guide with consideration of carriage flexibility by Tong, Van-Canh, Khim, Gyungho, Hong, Seong-Wook, Park, Chun-Hong

“…•A new analytical model is developed for stiffness matrix of a linear ball guide.•Carriage flexibility is considered using a new finite element model.•Changes…”
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Method for measuring location errors using a touch trigger probe on four-axis machine tools by Jeong, Ji Hun, Khim, Gyungho, Oh, Jeong Seok, Chung, Sung-Chong

“…One of the major sources of error affecting the accuracy of multi-axis machine tools is location error. Squareness errors and offset errors affect the…”
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Analysis of 5-DOF motion errors influenced by the guide rails of an aerostatic linear motion stage by Khim, Gyungho, Oh, Jeong Seok, Park, Chun Hong

“…This paper presents an estimation method for five-degrees-of-freedom (5-DOF) motion errors, which are influenced by the profiles of guide rails of an…”
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Control of the DLC coated ball bearing linear stage in high vacuum by Jongyoup Shim, Gyungho Khim, Chang-Woo Lee, Chun-Hong Park

“…A ball bearing linear stage in high vacuum is presented. Comparing with other vacuum compatible bearing this kind of stage shows simpler design, high stiffness…”
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Precision measurement of rail form error in a closed type hydrostatic guideway by Oh, Jeong Seok, Khim, Gyungho, Oh, Jung Soo, Park, Chun Hong

“…In this paper, a measuring device and measuring method are proposed to measure the rail profiles of a closed type guideway with submicrometer accuracy. The…”
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Performance Evaluation Method of CNC Units using Torque Curve Patterns by Chan-Hong Lee, Gyungho Khim

“…This paper proposes a new performance evaluation method of CNC units to predict the control ability of cutting process, and to localize weak points of CNC…”
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A three-axis translation stage using opposing wedges with error compensation by Khim, Gyungho, Ro, Seung Kook, Park, Jong Kweon, Ehmann, Kornel

“…We describe the development of a three-axis translation stage using wedges and its motion error compensation. The three-axis stage uses three wedges and is…”
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Analysis of additional leakage resulting from the feeding motion of a vacuum-compatible air bearing stage by Khim, Gyungho, Park, Chun-Hong, Lee, Husang, Kim, Seung-Woo

“…A rise in pressure is generated when a vacuum-compatible air bearing stage moves in a vacuum condition. This study analyzed this pressure rise phenomenon…”
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