Details
| Original language | English |
|---|---|
| Title of host publication | Laser Metrology and Machine Performance IX - 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009 |
| Pages | 187-195 |
| Number of pages | 9 |
| ISBN (electronic) | 9780955308277 |
| Publication status | Published - 1 Jan 2009 |
| Event | 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009 - Uxbridge, United Kingdom (UK) Duration: 30 Jun 2009 → 2 Jul 2009 |
Publication series
| Name | Laser Metrology and Machine Performance IX - 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009 |
|---|
Abstract
The capability, accuracy and performance of machine tools and their feed axes are highly influenced by controls and drives. The ongoing demand for higher dynamics and increased positioning accuracy, especially in the field of machine tools, requires new concepts for movement generation. High-speed-cutting and high-performance-cutting as well as reduced chip-to-chip times are only a few examples for the improvement of drive technology. Against this background linear direct drives were developed. Due to the high possible dynamics, the maximum accelerations and maximum jerks of these drives have to be limited by the controls, since otherwise machine frame excitation occurs. To overcome this limit of productivity, jerk-or impulse-decoupling technologies were developed. In this paper a new machine concept for a high speed milling machine is presented. The aim of this concept is to integrate an enhanced jerk-decoupling technology for translatory feed axes into a milling machine. Therefore, investigations at a single axis test rack concerning the jerk-decoupling technology have been performed. Different concepts for the design of the new prototype are examined by means of simulation techniques. Hereby, the emphasis is put on the axes arrangement and the resulting rigidity as well as the attainable dynamics. Based on FEM simulations, among other aspects the compliance-frequency-response of the machine frame was examined and the construction was optimized accordingly. The final machine concept depicts a prototype of a high speed milling machine. The design implies a modular construction, so that machine components can be easily exchanged. Thus, both 3-axes and 5-axes machining will be possible. Allthree translatory feed axes are driven by linear direct drives and the jerkdecoupling technology is integrated in the x-and y-axis of the machine tool. The workpiece can be moved along the y-axis. The vertical arranged z-axis provides a pneumatic weight compensation in order to balance gravity forces. The z-axis is equipped with a contact-less magnetic guidance. The machine concept is designed to enable high-speed machining at maximum accelerations of more than 2 g in the x-and y-axis and over 4 g in the z-axis. At present the setup of this machine tool prototype is in progress.
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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Laser Metrology and Machine Performance IX - 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009. 2009. p. 187-195 (Laser Metrology and Machine Performance IX - 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Innovative high speed machine tool with energy-optimized jerk-decoupling technology
AU - Denkena, B.
AU - Möhring, H. C.
AU - Gümmer, O.
PY - 2009/1/1
Y1 - 2009/1/1
N2 - The capability, accuracy and performance of machine tools and their feed axes are highly influenced by controls and drives. The ongoing demand for higher dynamics and increased positioning accuracy, especially in the field of machine tools, requires new concepts for movement generation. High-speed-cutting and high-performance-cutting as well as reduced chip-to-chip times are only a few examples for the improvement of drive technology. Against this background linear direct drives were developed. Due to the high possible dynamics, the maximum accelerations and maximum jerks of these drives have to be limited by the controls, since otherwise machine frame excitation occurs. To overcome this limit of productivity, jerk-or impulse-decoupling technologies were developed. In this paper a new machine concept for a high speed milling machine is presented. The aim of this concept is to integrate an enhanced jerk-decoupling technology for translatory feed axes into a milling machine. Therefore, investigations at a single axis test rack concerning the jerk-decoupling technology have been performed. Different concepts for the design of the new prototype are examined by means of simulation techniques. Hereby, the emphasis is put on the axes arrangement and the resulting rigidity as well as the attainable dynamics. Based on FEM simulations, among other aspects the compliance-frequency-response of the machine frame was examined and the construction was optimized accordingly. The final machine concept depicts a prototype of a high speed milling machine. The design implies a modular construction, so that machine components can be easily exchanged. Thus, both 3-axes and 5-axes machining will be possible. Allthree translatory feed axes are driven by linear direct drives and the jerkdecoupling technology is integrated in the x-and y-axis of the machine tool. The workpiece can be moved along the y-axis. The vertical arranged z-axis provides a pneumatic weight compensation in order to balance gravity forces. The z-axis is equipped with a contact-less magnetic guidance. The machine concept is designed to enable high-speed machining at maximum accelerations of more than 2 g in the x-and y-axis and over 4 g in the z-axis. At present the setup of this machine tool prototype is in progress.
AB - The capability, accuracy and performance of machine tools and their feed axes are highly influenced by controls and drives. The ongoing demand for higher dynamics and increased positioning accuracy, especially in the field of machine tools, requires new concepts for movement generation. High-speed-cutting and high-performance-cutting as well as reduced chip-to-chip times are only a few examples for the improvement of drive technology. Against this background linear direct drives were developed. Due to the high possible dynamics, the maximum accelerations and maximum jerks of these drives have to be limited by the controls, since otherwise machine frame excitation occurs. To overcome this limit of productivity, jerk-or impulse-decoupling technologies were developed. In this paper a new machine concept for a high speed milling machine is presented. The aim of this concept is to integrate an enhanced jerk-decoupling technology for translatory feed axes into a milling machine. Therefore, investigations at a single axis test rack concerning the jerk-decoupling technology have been performed. Different concepts for the design of the new prototype are examined by means of simulation techniques. Hereby, the emphasis is put on the axes arrangement and the resulting rigidity as well as the attainable dynamics. Based on FEM simulations, among other aspects the compliance-frequency-response of the machine frame was examined and the construction was optimized accordingly. The final machine concept depicts a prototype of a high speed milling machine. The design implies a modular construction, so that machine components can be easily exchanged. Thus, both 3-axes and 5-axes machining will be possible. Allthree translatory feed axes are driven by linear direct drives and the jerkdecoupling technology is integrated in the x-and y-axis of the machine tool. The workpiece can be moved along the y-axis. The vertical arranged z-axis provides a pneumatic weight compensation in order to balance gravity forces. The z-axis is equipped with a contact-less magnetic guidance. The machine concept is designed to enable high-speed machining at maximum accelerations of more than 2 g in the x-and y-axis and over 4 g in the z-axis. At present the setup of this machine tool prototype is in progress.
UR - http://www.scopus.com/inward/record.url?scp=84908299145&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84908299145
T3 - Laser Metrology and Machine Performance IX - 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009
SP - 187
EP - 195
BT - Laser Metrology and Machine Performance IX - 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009
T2 - 9th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2009
Y2 - 30 June 2009 through 2 July 2009
ER -