• 제목/요약/키워드: ATC (Automatic tool changer

검색결과 27건 처리시간 0.101초

A Study on the Development of Fixed Address Type Automatic Tool Changer (고정번지식 ATC개발에 관한 연구)

  • 이춘만;허영진
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 한국정밀공학회 2002년도 추계학술대회 논문집
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    • pp.1015-1018
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    • 2002
  • Recently, many studies have been undergoing to reduce a working time in a field of machine tool. There are two ways of reducing a working time; to reduce an actual working time by heighten a speed of spindle and to reduce a stand-by time by shortening a tool exchanging time. ATC(Automatic Tool changer) belongs to the latter case. Fixed address type ATC that is being developed ill this study can store more number of tool in small space than magazine transfer type ATC relatively as well as shorten tool exchanging time. In this study, a simplified equivalent model of finite element method in order to analyze structure of fixed address type ATC.

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The Technical Trend and Future Development Direction of Machine Tools Automatic Tool Changer by Patent Mapping (특허분석을 통한 공작기계 자동공구교환장치의 기술 현황과 발전방향)

  • Kim, Dong Hyeon;Chee, Hyun Su;Lee, Choon Man
    • Journal of the Korean Society for Precision Engineering
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    • 제30권3호
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    • pp.266-270
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    • 2013
  • Automatic tool changer(ATC) is typically provided to a machine tool to improve the efficiency of the machine tool significantly by saving time in moving, switching, installing and storing tools as well as adjusting a calibrating the machine tool. In this study, technical trend of machine tools automatic tool changer are analyzed by patent mapping. And future development direction of automatic tool changer has suggested. The analysis is carried out by using problem solution map for the applied patent during 2000 and 2010 in USA, Japan, Europe and Korea.

Development of Automatic Tool Changer of SMA Tool Holder (SMA를 이용한 공구홀더의 자동공구교환장치 개발)

  • Lee, Sungcheul;Ro, Seung-Kook;Park, Jong-Kweon
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • 제25권1호
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    • pp.1-6
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    • 2016
  • Micromanufacturing is a useful system for reducing energy consumption. For micromanufacturing, tool clamping and workpiece clamping are important components to realize the machining process. Therefore, a shape memory alloy (SMA) ring type tool holder is developed. In addition, this holder needs cooling and heating processes to execute the tool clamping process. This study suggests a cooling/heating device based on peltier elements. The device will be applied to the heating/cooling process of an automatic tool changer (ATC) for the SMA tool holder. This study introduces the configuration and operating principle of the proposed ATC system. The description and prototype evaluation of this system were given. Plastic bolt and aluminum block were selected to enhance the cooling performance, and the installed tool was changed in 17 s during the experiments.

A Study on the Design and Structural analysis of High Integrated Tool Tower ATC for Machine Tool (공작기계용 고 집적형 Tool Tower ATC 설계 및 구조 해석에 관한 연구)

  • Lee C.M.;Lim S.H.;Roh Y.H.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 한국정밀공학회 2005년도 추계학술대회 논문집
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    • pp.551-554
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    • 2005
  • This study is concerned about the design and structural analysis of high integrated tool tower ATC(Automatic Tool Changer) for machine tool. Recently, many studies have been undergoing to reduce a working time in a field of machine tool. Tool tower ATC belongs to reduce a stand-by time by shortening a tool exchanging time. The developed system can store more number of tool in small space than other machine. The analysis is carried out by CATIA V5 software. In the result of structural analysis, the safety factor of the developed system is confirmed.

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Dynamic Modeling of a Novel ATC Mechanism based on 4-bar Linkage (4절링크를 기반으로 하는 신개념 ATC 메커니즘의 동역학 해석)

  • Lee, Sangho;Kim, Jong-Won;Seo, TaeWon;Kim, Jongwon
    • Journal of Institute of Control, Robotics and Systems
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    • 제22권4호
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    • pp.307-314
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    • 2016
  • Recently, demands on the tapping machine are increased due to the case of a cell phone is changed to metal such as aluminum. The automatic tool changer (ATC) is one of the most important devices for the tapping machine related to the speed and energy consumption of the machine. To reduce the consumed energy and vibration, the dynamic modeling is essential for the ATC. In this paper, inverse dynamic modeling of a novel ATC mechanism is introduced. The proposed ATC mechanism is composed of a double four-bar mechanism with a circular tablet to generate continuous rotation of the tablet. The dynamic modeling is performed based on the Lagrange equation with a modeling for the contact between the four-bar and the tablet. Simulation results for various working conditions are proposed and analyzed for the prototype design. The dynamic modeling can be applied to determine the proper actuator and to reduce the vibration and consumed energy for the ATC machine.

A Study on the Development and Performance Evaluation of an ATC Test Bench (ATC Test Bench 개발 및 성능평가에 관한 연구)

  • Kim, Jae-Hyun;Choi, Jun-Young;Lee, Choon-Man
    • Journal of the Korean Society for Precision Engineering
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    • 제29권5호
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    • pp.489-493
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    • 2012
  • Automatic tool changers(ATCs) store tools used in a machining center to its magazine and changes the tools automatically. Tools of machine centers are changed and then precisely equipped to spindle system by the ATC. Therefore, the stability and reliability of the ATC is very important. But, there is lack of development and evaluation on basic performance and vibration of the ATCs. So, in this study, a BT40 ATC test bench was developed to verify stability and reliability of BT40 ATCs.

Development of Hybrid-FDM Process Using Automatic Tool Changer for Multi-Material Production and Post-Processing (자동공구교환장치를 이용한 융합 FDM 공정 및 장치개발에 관한 연구)

  • Choi, Sung Min;Jian, Xiao;Park, In Baek;Lee, Seok Hee
    • Journal of the Korean Society for Precision Engineering
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    • 제33권3호
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    • pp.235-242
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    • 2016
  • The purpose of this study is an attempt to improve the functionality of a conventional Fused Deposition Modeling (FDM) process using the Automatic Tool Changer (ATC) to perform multimaterial production and post-processing. Hybrid-FDM means a fusion of an Additive Manufacturing process and grinding process using the ATC system. In order to enhance the potentiality of production capacity for multi-material fabrication and surface roughness improvement, two extrusion tools and one grinding tool system are suggested. A pneumatic chuck is attached on a moving platform in the XY axes plane and an extrusion head and grinding head are placed in a docking station, allowing for a quick changeover with each other. Therefore, the manufacturing lead time can be reduced efficiently for the fabrication of a product.

Development of Control System of High-speed ATC of Machining Center (Machining Center의 고속 ATC 제어 시스템의 개발)

  • Han, Dong-Chang;Lee, Dong-Il;Song, Yong-Tae;Lee, Seok-Gyu
    • Journal of the Korean Society for Precision Engineering
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    • 제19권9호
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    • pp.125-132
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    • 2002
  • We use a compound-cam twin arm structure and random tool access method to achieve a faster ATC (Automatic Tool Changer) system for the accurate position and rotation control of a tool magazine and an exchange am. Based on the data obtained from various sensors, it is possible to follow the sequence of commands in each control step for an exchange arm. However, it is not so easy to reduce the exchange time of the system because of the slow responses of the sensors and execution mode delays of PLC (Programmable Logic Controller) scan time. In this paper, we propose a new programmed limit-switch position control method to obtain the shortest possible delays for the random tool access method and compound-cam twin arm structure. With some experimental results, we have achieved below 0.9sec tool exchange time with the proposed method.

Reliability Evaluation of ATC for High-Speed Line Center (고속 Line Center의 ATC 신뢰성 평가)

  • Lee Seung-Woo;Lee Hwa-Ki;Shin Dong-Hwan
    • Journal of the Korean Society for Precision Engineering
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    • 제23권6호
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    • pp.111-118
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    • 2006
  • Recently, the reliability evaluation and analysis are applied far many industrial products which are required to guarantee in quality and efficiency. The purpose of this paper is to present some of reliability evaluation methodologies that are applicable to machine tools. Especially ATC (Automatic Tool Changer), which is a core component of line center, was chosen as the target of the reliability evaluation and analysis. The scope of research is reliability prediction, reliability test and evaluates their results. The results of reliability evaluation have shown the failure rates, MTBF (Mean Time Between Failure), reliability for those components of ATC and real tests reliability through the constructed reliability test-bed. It is expected that proposed methodologies would increase reliability for a high-speed line center.

A study on the Design of Drum Type Automatic Tool Changer (드럼형 자동공구교환장치의 설계에 관한 연구)

  • Choi, Hyun-Jin;Lee, Han-Gyu
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • 제19권7호
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    • pp.52-59
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    • 2020
  • Automatic tool changers (ATCs) can be divided into drum and chain types. Drum-type ATCs contain a magazine, where the tools are mounted, and a cam gearbox, which swaps the tools via roller gear and grooved plate cams. Drum-type ATCs are advantageous in that the operating time for the tool magazine is more rapid than that of chain-type ATCs and the length of the unit is shorter. Thus, drum-type ATCs can be fabricated into various shapes and forms depending on the number of tools and the magazine size in accordance with machining center requirements and consumer demand. In particular, the price competitiveness of a machining center with a drum-type ATC is higher, while drum-type ATCs are more rigid with fewer parts, possibly reducing the need for regular servicing. This study aims to verify the structural stability and design validity of the magazine base, which is the main structure of a drum-type ATC, using finite element analysis. This study kinematically verifies the specifications of the selected drive motor and reducer and assessed the design of the cam gearbox. It also conducts a structural analysis of the roller camp, which is the core component of the cam gearbox, based on the results of the kinetodynamic analysis, thus validating the structural design.