stiffness of structures and drives in fast milling machines

  • 12 Structure Design of the Machinencut.edu.tw

    2008-3-24 · • Static stiffness and damping must be specified. • Static stiffness requirements can be predicted. • Damping can be specified and designed into a machine. 12-12 Specifying the Minimum Required Static Stiffness for Measuring Machines and Instruments • For high speed positioning use the earlier servo-bandwidth determination.

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  • DESIGN OF SINGLE-PURPOSE MILLING MACHINE

    2020-11-28 · The basic pre-requisite for milling machines is to observe the relative workpiece/ tool placement in a precisely defined position. Milling machines are of different designs but certain construction nodes are similar and perform the same task. The main part of milling machine is a frame. Drive-motors are used to derive the main cutting motion.

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  • THE CONCEPT OF HSC MILLING MACHINE WITH HYBRID

    2011-3-25 · structures in milling and especially in high-speed milling of free form surfaces in comparison to serial structures. Parallel kinematics structures have been used with success for robotic tasks since the early 1980s. Since the first presentation of parallel kinematics machines (PKM) in 1994 very few are used nowadays in industry and when it

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  • Precision Machine DesignMIT

    2003-8-29 · • Dynamic stiffness is a necessary and sufficient specification. • Dynamic stiffness •Stiffness of the system measured using an excitation force with a frequency equal to the damped natural frequency of the structure. • Dynamic stiffness can also be said to be equal to the static stiffness divided by the amplification (Q) at resonance

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  • How to Design for Stiffness Using a Geometric Approach

    Designing for stiffness through geometric controls is a top tool in that box. Even the simplest designs can be sensitive to part stiffness For example if a plastic coat hanger is too flimsy even to hold a shirt or a pair of pants without sagging so much that the clothing falls off or wrinkles then it s not worth much.

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  • Advances in Mechanical Engineering 2016 Vol. 8(7) 1–14

    2016-2-25 · Basically the deformation of machine tool structures under cutting forces and structural loads are responsi-ble for the poor quality of products and vibration pro-duced in operation. To improve both the static and dynamic characteristics the machine tool structures should have high static stiffness and damping ability.

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  • Determination of the Cutting Performance and Dynamic

    2021-5-30 · milling machines. Finally the cutting performance and the dynamic behaviour of the milling machine is determined combining the measurements of the dynamic stiffness of the structure the stability models cutting tests and modal analysis. 1 Introduction

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  • Structures for high speed machinesslideshare

    2018-12-7 · STRUCTURES FOR HSM. 14. REQUIREMENTS OF MACHINE TOOL STRUCTURES For high speed operation with accuracy machine tool structures should be designed with light moving frames. High stiffness and damping properties are required to increase the fundamental natural frequencies and decrease the vibration induced. 15.

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  • Vertical Milling MachinesDinox 220 IAT FPT Industrie Spa

    Vertical travel. mm (in) 1.100 (43 3) Feed rate. mm/min (ipm) up to 50.000 (1.968 5) DINOX 220 IAT is a moving bridge Gantry-style machine suitable for heavy duty machining as well as high-speed cutting. The optimization of the structures through use of the most advanced FEM analysis and the use of drive systems of the most recent generation

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  • Portal Milling Machines in Perfection

    the milling machines came the customers with the demands opened up new possibilities and with the technical develop-ments came the product-specific innovations. Today Zimmer-mann is one of the world s leading manufacturers of high-tech portal milling machines impressing the world with innovative solutions "Made in Germany".

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  • Stiffness of Structures and Drives in Fast Milling Machines

    1999-6-5 · A stiffness requirement for high speed milling machines is determined by examining the stiffness of current generation high speed spindles. The desire for stability against chatter dictates that the stiffness of the machine structure and drives when reflected to the tool tip exceed the spindle/tool holder/tool stiffness.

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  • Determination of the Cutting Performance and Dynamic

    2021-5-30 · milling machines. Finally the cutting performance and the dynamic behaviour of the milling machine is determined combining the measurements of the dynamic stiffness of the structure the stability models cutting tests and modal analysis. 1 Introduction

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  • Integrated System Simulation of a Milling Machine

    2020-12-11 · The paper is based on a simple model of a milling machine in order to provide a demonstration model for stability analysis of milling machines. The model is introduced first to show the various components of the machine tool model (see Fig. 1). Then modelling and effect of control is described followed by

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  • THE CONCEPT OF HSC MILLING MACHINE WITH HYBRID

    2011-3-25 · structures in milling and especially in high-speed milling of free form surfaces in comparison to serial structures. Parallel kinematics structures have been used with success for robotic tasks since the early 1980s. Since the first presentation of parallel kinematics machines (PKM) in 1994 very few are used nowadays in industry and when it

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  • John C. ZiegertProfileSAE International

    2009-4-20 · Stiffness of Structures and Drives in Fast Milling Machines. 1999-06-05. 1999-01-2273. A stiffness requirement for high speed milling machines is determined by examining the stiffness of current generation high speed spindles. The desire for stability against chatter dictates that the stiffness of the machine structure and drives when

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  • Machine Stiffnessan overview ScienceDirect Topics

    Most machine tools are lightly damped. Machine stiffness and damping vary according to the vibration mode. The impulsive response shown in Fig. 12.1 is typical for a lightly damped machine. For a spring-mass-damper system motion is described by where x is deflection and F is the applied excitation force.The equation of motion states that the applied force is reacted by the elastic damping

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  • UNIT 14 DESIGN OF MACHINE STRUCTURES Structures

    2011-1-13 · Structures Sl. No. Wall Arrangement Application 1 Covered top closed profile bed These are used in boring Plano-milling and slotting machines. 2 Open top closed profile bed. These are used in grinding machines. They are also used when the bed is also required to serve as an oil reservoir. 3 Beds on legs without stiffening diagonal wall.

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  • Vertical Milling MachinesDinox 220 IAT FPT Industrie Spa

    Vertical travel. mm (in) 1.100 (43 3) Feed rate. mm/min (ipm) up to 50.000 (1.968 5) DINOX 220 IAT is a moving bridge Gantry-style machine suitable for heavy duty machining as well as high-speed cutting. The optimization of the structures through use of the most advanced FEM analysis and the use of drive systems of the most recent generation

    Chat Online
  • Portal Milling Machines in Perfection

    the milling machines came the customers with the demands opened up new possibilities and with the technical develop-ments came the product-specific innovations. Today Zimmer-mann is one of the world s leading manufacturers of high-tech portal milling machines impressing the world with innovative solutions "Made in Germany".

    Chat Online
  • DESIGN OF SINGLE-PURPOSE MILLING MACHINE

    2020-11-28 · The basic pre-requisite for milling machines is to observe the relative workpiece/ tool placement in a precisely defined position. Milling machines are of different designs but certain construction nodes are similar and perform the same task. The main part of milling machine is a frame. Drive-motors are used to derive the main cutting motion.

    Chat Online
  • THE CONCEPT OF HSC MILLING MACHINE WITH HYBRID

    2011-3-25 · structures in milling and especially in high-speed milling of free form surfaces in comparison to serial structures. Parallel kinematics structures have been used with success for robotic tasks since the early 1980s. Since the first presentation of parallel kinematics machines (PKM) in 1994 very few are used nowadays in industry and when it

    Chat Online
  • Start-up and Control Operations for Top Milling Machine

    2010-10-4 · These structures represent closed-loop constructions flexibility (dynamics) of which allowing high productivity follows from possible small number of moving masses. Therefore in comparison with serial types they may offer higher stiffness and dex-terity. This feature is given by the fixing almost all drives directly on the basic frame

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  • Wide bandwidth control of high-speed milling machine feed

    2019-7-22 · The finished part is reduced to only 1.5 percent of the original mass (128 g) during 28 minutes of high-speed machining at a spindle speed of 28 500 rpm. The purpose of this dissertation is to investigate some of the problems that are confronted in wide bandwidth control of feed drives for high-speed milling machines.

    Chat Online
  • THE CONCEPT OF HSC MILLING MACHINE WITH HYBRID

    2011-3-25 · structures in milling and especially in high-speed milling of free form surfaces in comparison to serial structures. Parallel kinematics structures have been used with success for robotic tasks since the early 1980s. Since the first presentation of parallel kinematics machines (PKM) in 1994 very few are used nowadays in industry and when it

    Chat Online
  • Portal Milling Machines in Perfection

    the milling machines came the customers with the demands opened up new possibilities and with the technical develop-ments came the product-specific innovations. Today Zimmer-mann is one of the world s leading manufacturers of high-tech portal milling machines impressing the world with innovative solutions "Made in Germany".

    Chat Online
  • Stiffness of Structures and Drives in Fast Milling

    Table of contentsVolume 108 . Show all volumes and issues. Tables of content are generated automatically and are based on records of articles contained that are available in

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  • 12 Structure Design of the Machinencut.edu.tw

    2008-3-24 · • Static stiffness and damping must be specified. • Static stiffness requirements can be predicted. • Damping can be specified and designed into a machine. 12-12 Specifying the Minimum Required Static Stiffness for Measuring Machines and Instruments • For high speed positioning use the earlier servo-bandwidth determination.

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  • Forces and StiffnessPhysik Instrumente

    Stiffness. The actuator stiffness k A is an important parameter for calculating force generation resonant frequency and system behavior. Piezoceramic stack actuators are characterized by very high stiffness values of up to several hundred newtons per micrometer. The following equation is used for calculation

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  • Composite Machine Tool Structures for High Speed Milling

    2002-1-1 · These composite structures reduced the weight of the vertical and horizontal slides by 34 and 26 respectively and increased damping by 1.5 to 5.7 times without sacing the stiffness. Without much tuning this machine had a positional accuracy of ±

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  • Wide bandwidth control of high-speed milling machine feed

    2019-7-22 · The finished part is reduced to only 1.5 percent of the original mass (128 g) during 28 minutes of high-speed machining at a spindle speed of 28 500 rpm. The purpose of this dissertation is to investigate some of the problems that are confronted in wide bandwidth control of feed drives for high-speed milling machines.

    Chat Online
  • Wide bandwidth control of high-speed milling machine feed

    2019-7-22 · The finished part is reduced to only 1.5 percent of the original mass (128 g) during 28 minutes of high-speed machining at a spindle speed of 28 500 rpm. The purpose of this dissertation is to investigate some of the problems that are confronted in wide bandwidth control of feed drives for high-speed milling machines.

    Chat Online
  • Start-up and Control Operations for Top Milling Machine

    2010-10-4 · These structures represent closed-loop constructions flexibility (dynamics) of which allowing high productivity follows from possible small number of moving masses. Therefore in comparison with serial types they may offer higher stiffness and dex-terity. This feature is given by the fixing almost all drives directly on the basic frame

    Chat Online
  • An integrated process–machine approach for designing

    2011-7-1 · Highlights Approach for designing productive and lightweight milling machines. Modeling of interactions between process and machine by means of a stability model. Identification of design parameters limiting the productivity of milling operations. Iterative procedure for minimizing the mass of machine structural components. Methodology applied to the re-design of an actual milling machine.

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  • Composite Machine Tool Structures for High Speed Milling

    2002-1-1 · Composite Machine Tool Structures for High Speed Milling Machines J. D. Suhl and D. G. Lee’ Dept. of Mechanical Engineering Korea Advanced Institute of Science and Technology ME3261 1 373-1 Guseong-dong Yuseong-gu Daejeon-shi 305-701 Republic of Korea email protected ac. kr Submitted by R. Kegg’ (1) Cincinnati-Milacron Cincinnati Ohio USA 2 Abstract

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  • An integrated process–machine approach for designing

    2011-7-1 · Combining the actual forces with the precision requirements issued by manufacturers a static stiffness of 1000 N/50 μm (20 N/μm) at the TCP can be considered as a reference threshold value for general-purpose milling machines. This means that if in a representative machine position and in a specific direction the machine has a higher static stiffness from the static point of view there is a margin for reducing the static stiffness of the machine

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  • An integrated process–machine approach for designing

    2011-7-1 · Highlights Approach for designing productive and lightweight milling machines. Modeling of interactions between process and machine by means of a stability model. Identification of design parameters limiting the productivity of milling operations. Iterative procedure for minimizing the mass of machine structural components. Methodology applied to the re-design of an actual milling machine.

    Chat Online
  • Start-up and Control Operations for Top Milling Machine

    2010-10-4 · These structures represent closed-loop constructions flexibility (dynamics) of which allowing high productivity follows from possible small number of moving masses. Therefore in comparison with serial types they may offer higher stiffness and dex-terity. This feature is given by the fixing almost all drives directly on the basic frame

    Chat Online
  • 12 Structure Design of the Machinencut.edu.tw

    2008-3-24 · • Static stiffness and damping must be specified. • Static stiffness requirements can be predicted. • Damping can be specified and designed into a machine. 12-12 Specifying the Minimum Required Static Stiffness for Measuring Machines and Instruments • For high speed positioning use the earlier servo-bandwidth determination.

    Chat Online
  • DESIGN OF SINGLE-PURPOSE MILLING MACHINE

    2020-11-28 · The basic pre-requisite for milling machines is to observe the relative workpiece/ tool placement in a precisely defined position. Milling machines are of different designs but certain construction nodes are similar and perform the same task. The main part of milling machine is a frame. Drive-motors are used to derive the main cutting motion.

    Chat Online
  • Machine Stiffnessan overview ScienceDirect Topics

    Most machine tools are lightly damped. Machine stiffness and damping vary according to the vibration mode. The impulsive response shown in Fig. 12.1 is typical for a lightly damped machine. For a spring-mass-damper system motion is described by where x is deflection and F is the applied excitation force.The equation of motion states that the applied force is reacted by the elastic damping

    Chat Online
  • FEA APPLICATIONS IN MILLING CHATTER STABILITY ANALYSIS

    2020-11-30 · J. Tlusty J. C. Ziegert and S. Ridgeway Stiffness of structures and drives in fast milling machines Aerospace Manufacturing Technology Conference Exposition Bellevue Washington (June 8–10 1999) SAE Technical Paper Series 1999-01-2273 . Google Scholar

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