• 제목/요약/키워드: High-speed feed axes

검색결과 6건 처리시간 0.02초

Core Technologies of Next-generation Machine Tools

  • Lee, Jae-yoon
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 2000년도 Handout for 2000 Inter. Machine Tool Technical Seminar
    • /
    • pp.61-70
    • /
    • 2000
  • This paper described the current status of machine tool technology and its future trends with a particular emphasis on high-speed machining. People in machine tool industry have continuously sought to serve fast-changing manufacturing industry with economical machining solutins. At presents, it appears that more productivity gain is demanded to shorten time-to-market and machining requirements become more stringent. In this regard, this paper firstly addressed a high-speed spindle as a key element for the next-generation machine tools. The sequel to it apparently went to high-speed feed axes and final discussion included the problem of how to optimize overall system including servo function. Lastly a brief look to NC technology including machine intelligence was taken.

  • PDF

신경망 제어에 의한 철심형 리니어모터의 추종성 향상 연구 (Study for Improvement of Tracking Accuracy of the Feeding System with Iron Core Type Linear DC Motor by Neural Network Control)

  • 송창규;김경호;정재한
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 2002년도 춘계학술대회 논문집
    • /
    • pp.73-77
    • /
    • 2002
  • The requirements for higher productivity call for high speed of the machine tool axes. Iron core type linear DC motor is growly accepted far a viable candidate of the high speed machine tool feed unit. LDM, however, has inherent disturbance force components: cogging and force ripple. These disturbance force directly affects tracking accuracy of the carrage and must be eliminated or reduced. Reducing motor ripple, this paper adapted the feed forward compensation method and neural network control. Experiments carried 7ut on the linear motor test setup show that this control methods is usable in order to reduce the motor ripple.

  • PDF

철심형 리니어모터 이송계의 추종성 향상에 관한 연구 (Study for Improvement of Tracking Accuracy of the Feeding System with Iron Core Type Linear DC Motor)

  • 송창규;황주호;박천홍;김경호;정재한
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 2001년도 춘계학술대회 논문집
    • /
    • pp.71-73
    • /
    • 2001
  • The requirements for higher productivity call for high speed of the machine tool axes. Iron core type linear DC motor is growly accepted for a viable candidate of the high speed machine tool feed unit. LDM, however, has inherent disturbance force components: cogging and force ripple. These disturbance force directly affects the carrage tracking accuracy and must be eliminated or reduced. Reducing motor ripple, this paper adapted the feed forward compensation method. Experiments carried out on the linear motor test setup show that this compensation method is usable in order to reduce the motor ripple.

  • PDF

고정밀 고속 윤곽가공을 위한 3축 연동제어기 (3-Axis Coupling Controller for High-Precision/High-Speed Contour Machining)

  • 지성철;구태훈
    • 대한기계학회논문집A
    • /
    • 제28권1호
    • /
    • pp.40-47
    • /
    • 2004
  • This paper proposes a three-axis coupling controller designed to improve the contouring accuracy in machining of 3D nonlinear contours. The proposed coupling controller is based on an innovative 3D contour error model and a PID control law. The novel contour error model provides almost exact calculation of contour errors in real-time for arbitrary contours and can be integrated with any type of existing interpolator. In the proposed method, three axes of motion are coordinated by the proposed coupling controller along with a proportional controller for each axis. The proposed contour error model and coupling controller are evaluated through computer simulations. The simulation results show that the proposed 3-axis coupling controller with the new contour error model substantially can improve the contouring accuracy by order of magnitude compared with the existing uncoupled controllers in high-speed machining of nonlinear contours.

Improvement of Tracking Accuracy of Positioning Systems with Iron Core Linear DC Motors

  • Song, Chang-Kyu;Kim, Gyung-Ho
    • International Journal of Precision Engineering and Manufacturing
    • /
    • 제6권1호
    • /
    • pp.31-35
    • /
    • 2005
  • Higher productivity requires high-speed motion of machine tool axes. The iron core linear DC motor (LDM) is widely accepted as a viable candidate for high-speed machine tool feed unit. LDM, however, has two inherent disturbance force components, namely cogging and thrust force ripple. These disturbance forces directly affect the tracking accuracy of the feeding system and must be eliminated or reduced. In order to reduce motor ripple, this research adapted the feedforward compensation method and neural network control. Experiments carried out with the linear motor test setup show that these control methods are effective in reducing motor ripple.

철심형 리니어모터의 추력 리플 억제에 관한 연구 (Studdy for Force Ripple Suppression of the Iron Core Linear Motors)

  • 송창규;김정식;김경호;박천홍
    • 한국공작기계학회:학술대회논문집
    • /
    • 한국공작기계학회 2004년도 추계학술대회 논문집
    • /
    • pp.358-362
    • /
    • 2004
  • Higher productivity requires high-speed motion of machine tool axes. The iron core linear DC motor (LDM) is widely accepted as a viable candidate for high-speed machine tool feed unit. LDM, however, has two inherent disturbance force components, namely cogging and thrust force ripple. These disturbance forces directly affect the tracking accuracy of the feeding system and must be eliminated or reduced. In order to reduce motor ripple, this research adapted the feedforward compensation method and neural network control. Experiments carried out with the linear motor test setup show that these control methods are effective in reducing motor ripple.

  • PDF