The sectors of the Root industry include casting, plastic works, welding, surface treatment, and heat treatment. While the industry is concerned with the processing technologies that are used in most of the manufacturing industries, the sophistication of the corresponding manufacturing information systems is very low. This paper describes a manufacturing information system for the building sector for which the smartphone devices that the workers use in their daily lives are employed, and where the cost of the adaption of the manufacturing system at their factories is minimized. The proposed system consists of the following three parts: UI composer, General Application, and Gateway.
This paper describes the efficient equipment maintenance that can offer the exact time for repair and change of component in root industry. A conventional method offered the fixed time for repair and change of component because the method is based on early guarantee specification of the component. However the operating condition of manufacturing field is often under worse condition than early guarantee condition for high productivity. So, most components can’t use until early guarantee time due to the operation of various different condition. Therefore we suggest the useful method for efficient equipment-maintenance by manufacturing-field analysis and feedback database. For this, the classification of root industry and related equipment is performed and then the detail classification of the process and component for equipment maintenance. And the monitoring module is also designed to gather data for feedback process and the environment is basically implemented for aging and reliability test.
This paper aims to develop a prediction model for the product quality of a casting process. Prediction of the product quality utilizes an artificial neural network (ANN) in order to renovate the manufacturing technology of the root industry. Various aspects of the research on the prediction algorithm for the casting process using an ANN have been investigated. First, the key process parameters have been selected by means of a statistics analysis of the process data. Then, the optimal number of the layers and neurons in the ANN structure is established. Next, feed - forward back propagation and the Levenberg - Marquardt algorithm are selected to be used for training. Simulation of the predicted product quality shows that the prediction is accurate. Finally, the proposed method shows that use of the ANN can be an effective tool for predicting the results of the casting process.
Citations
Citations to this article as recorded by
A Study on 3D Printing Conditions Prediction Model of Bone Plates Using Machine Learning Song Yeon Lee, Yong Jeong Huh Journal of the Korean Society for Precision Engineering.2022; 39(4): 291. CrossRef
Quality prediction for aluminum diecasting process based on shallow neural network and data feature selection technique Chanbeom Bak, Abhishek Ghosh Roy, Hungsun Son CIRP Journal of Manufacturing Science and Technology.2021; 33: 327. CrossRef
Response Simulation, Data Cleansing and Restoration of Dynamic and Static Measurements Based on Deep Learning Algorithms Seok-Jae Heo, Zhang Chunwei, Eunjong Yu International Journal of Concrete Structures and Materials.2018;[Epub] CrossRef
The operating environments of factories and manufacturing units have changed dramatically due to globalization, population, and customization. The existing factories are converted into smart units using information and communications technology (ICT). These smart factories can produce, control, repair, and manage themselves. The manufacturing processes are efficiently optimized using the monitoring and analysis methods of ICT. In this experimental study, we carried out a survey on the system solution providers and consumer companies to determine the field conditions and requirements necessary for assembling a smart factory. Using the results of this survey, we effectively devised smart factory solutions and implemented them on the existing conditions in various factories.
Citations
Citations to this article as recorded by
Development of a Find-On System for Material Warehouse Management Suitable for Use in Small and Medium-Sized Businesses kim songmin, jung seng-hwa, jae jin Song The Journal of Korean Institute of Information Technology.2025; 23(5): 63. CrossRef
A Study on the Level Diagnosis Model of Korean Smart Factory for Small-Medium Manufacturing Company : Focusing on the Firm of Plastic Injection parts Man-Seok Lee The Journal of Korean Institute of Information Technology.2024; 22(2): 165. CrossRef
Improvement of Manufacturing Industry Work Environment Using Signage: Root Industry Kyungjin Oh, Nayoung Lee, Daekwon Chung, Jinho Woo, Haeyeon Shin, Hunseop Kim, Ho Seong Lee, San Kim, SangJun Moon, Won-Shik Chu Academic Society for Appropriate Technology.2022; 8(3): 117. CrossRef
We used a construction method using a CNC milling machine, where free-formed molds were made by cutting EPS (Expanded PolyStyrene) foam with the CNC machine, to build free-formed buildings. CNC milling is off-the-shelf technology that can easily cut EPS foam; however its production cost is too high and the time to manufacture an EPS mold is too long. This paper proposes a novel cutting machine with a fast and cost effective mechanism to manufacture EPS concrete molds. Our machine comprises a cutter and Cartesian coordinate type moving mechanism, where the cutter cuts EPS foam using a hotwire in the shape of ‘Π’ and is capable of adjusting its cutting angle in real-time while keeping its cutting width. We proved through cutting experiments on the CNC machine that cutting time was greatly shortened compared to the conventional method and that the resulting concrete mold satisfied manufacturing precision.
Citations
Citations to this article as recorded by
Development of Side Mold Control Equipment for Producing Free-Form Concrete Panels Jiyeong Yun, Kyeongtae Jeong, Jongyoung Youn, Donghoon Lee Buildings.2021; 11(4): 175. CrossRef
Manufacturing Automation System of Freeform Concrete Formwork Using S-LOM Method Joonhyeok Sim, Hakmin Kim, Kyunwoo Park, Chanwoo Kim, Daehie Hong Journal of the Korean Society for Precision Engineering.2020; 37(1): 43. CrossRef
Magnetically levitated (Maglev) vehicles maintain a constant air gap between guideway and car bogie, and thereby achieves non-contact riding. Since the straightness and the flatness of the guideway directly affect the stability of levitation as well as the ride comfort, it is necessary to monitor the status of the guideway and to alert the train operators to any abnormal conditions. In order to develop a signal processing algorithm that extracts guideway irregularities from sensor data, virtual testing using a simulation model would be convenient for analyzing the exact effects of any input as long as the model describes the actual system accurately. Simulation model can also be used as an estimation model. In this paper, we develop a state-space dynamic model of a maglev vehicle system, running on the guideway that contains jumps. This model contains not only the dynamics of the vehicle, but also the descriptions of the power amplifier, the anti-aliasing filter and the sampling delay. A test rig is built for the validation of the model. The test rig consists of a small-scale maglev vehicle, tracks with artificial jumps, and various sensors measuring displacements, accelerations, and coil currents. The experimental data matches well with those from the simulation model, indicating the validity of the model.
Citations
Citations to this article as recorded by
Stochastic Dynamics of Suspension System in Maglev Train: Governing Equations for Response Statistics and Reliability Wantao Jia, Mingxia Luo, Fei Ni International Journal of Structural Stability and Dynamics.2023;[Epub] CrossRef
Generally, a working excavator has only one directional bucket tilting angle, which is up-forward. However, side direction rotation of the bucket would allow variety of working output. We designed a hydraulic rotary actuator comprising a double rod hydraulic cylinder with a rack-pinion gear set for use in excavator bucket with side tilting mechanism, thus converting the linear to angular motion. The proposed side tilting rotary actuator was designed with parts suitable for medium size of heavy duty excavator. These mechanical parts were inexpensive to purchase and the manufacturing cost was reasonable. The proposed mechanism is potentially useful for excavator with variety of working output.
Citations
Citations to this article as recorded by
A Gain-Adaptive Intelligent Nonlinear Control for an Electrohydraulic Rotary Actuator Nguyen Minh Tri, Dang Xuan Ba, Kyoung Kwan Ahn International Journal of Precision Engineering and Manufacturing.2018; 19(5): 665. CrossRef
A Review of Recent Advances in Design Optimization of Gearbox Zhen Qin, Yu-Ting Wu, Sung-Ki Lyu International Journal of Precision Engineering and Manufacturing.2018; 19(11): 1753. CrossRef
A fine stage is developed for the 3-DOF error compensation of a linear axis in order to improve the positioning accuracy. This stage is designed as a planar parallel mechanism, and the joints are based on a flexure hinge to achieve ultra-precise positioning. Also, the effect of Abbe’s offsets between the measuring and driving coordinate systems is minimized to ensure an exact error compensation. The mode shapes of the designed stage are analyzed to verify the desired 3-DOF motions, and the workspace and displacement of a piezoelectric actuator (PZT) for compensation are analyzed using forward and inverse kinematics. The 3-DOF error of a linear axis is measured and compensated by using the developed fine stage. A marked improvement is observed compared to the results obtained without error compensation. The peak-to-valley (PV) values of the positional and rotational errors are reduced by 92.6% and 91.3%, respectively.
Citations
Citations to this article as recorded by
A new method to identify the position-independent geometric errors in the rotary axes of five-axis machine tools Seth Osei, Wei Wang, Qicheng Ding Journal of Manufacturing Processes.2023; 87: 46. CrossRef
Development and Performance Evaluation of a Fine Stage for Compensating 6-DOF Motion Errors of an Ultra-Precision Linear Stage Hoon-Hee Lee, In-Seok Lee, Kwang-Il Lee, Seung-Han Yang Journal of the Korean Society for Precision Engineering.2021; 38(2): 123. CrossRef
Optimal On-Machine Measurement of Position-Independent Geometric Errors for Rotary Axes in Five-Axis Machines with a Universal Head Kwang-Il Lee, Jae-Chang Lee, Seung-Han Yang International Journal of Precision Engineering and Manufacturing.2018; 19(4): 545. CrossRef
Error Compensation Using Variable Stiffness in Orbital Grinding Joon Jang, Woo Chun Choi International Journal of Precision Engineering and Manufacturing.2018; 19(3): 317. CrossRef
Face- and Body-Diagonal Length Tests using a Double Ball-Bar for Squareness Errors of Machine Tools Seung-Han Yang, Hoon-Hee Lee, Kwang-Il Lee International Journal of Precision Engineering and Manufacturing.2018; 19(7): 1039. CrossRef
We present a multi-sample array device based on a pneumatic system. Solenoid valves were used to control a micro valve in a pneumatic system. The use of a compressor together with a vacuum pump ensured that one outlet could supply both compression and vacuum pressure. The multi-sample array device was fabricated using conventional photolithography and PDMS casting. The device was composed of a multiplexer, sample array, and rinsing. The multiplexer could control four sample solutions injecting into the sample array chamber. Sample solution not arrayed was removed by DI-water from the rinsing inlet. To prevent trapping of microbubbles in the channel during injection of sample solution into the device, surfactant was added in PDMS solution to serve as a hydrophilic surface treatment. As a result, the device could be used as a sample array for 64 cases, using four samples and three columns of three chambers.
Citations
Citations to this article as recorded by
Shape Optimization of Pneumatic Angle Valve Using Structural Analysis In-Soo Son Journal of Power System Engineering.2020; 24(5): 48. CrossRef
Non-Contact Intraocular Pressure Measurement Method using Relation between Deformed Cornea and Reflected Pneumatic Pressure Hyung Jin Kim, Young Ho Seo, Byeong Hee Kim International Journal of Precision Engineering and Manufacturing.2018; 19(5): 737. CrossRef
The goal of this paper is to investigate the effects of out-of-plane deposition angle on product characteristics of a UV photo-curing process. Specimens are manufactured from a commercialized UV photo-curing machine, the NOBEL V1.0. The influence of the out-of-plane deposition angle of the specimen on surface characteristics, including morphology of the sloped surface, pick-to-pick distance of convex region, and roughness of the sloped surface, is examined via the observation of the sloped surface. In addition, the influence of the radius of curvature of the specimen on the surface roughness of the sloped surface is evaluated. The effects of the out-of-plane deposition angle on impact strength of specimens are investigated via Izod impact experiments. Finally, we discuss the influence of the out-of-plane deposition angle on failure characteristics of specimens for impact loads.