Results 41 to 50 of about 16,149 (200)

From computer-aided to intelligent machining: Recent advances in computer numerical control machining research [PDF]

open access: yes, 2015
The aim of this paper is to provide an introduction and overview of recent advances in the key technologies and the supporting computerized systems, and to indicate the trend of research and development in the area of computational numerical control ...
Gao, James   +2 more
core   +1 more source

Tool Orientation Planning Based on Kinematic Relation of Five-Axis CNC Machining Tools in Sculptured Surface Machining

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract Five-axis machining has been applied in sculptured surface manufacturing more and more widely. Tool orientation planning becomes important for higher machining precision. For this purpose, planning method based on kinematic relation of five-axis CNC machining tools is proposed to control the variations of the cutter-axis vectors
Xianyin Duan   +3 more
openaire   +1 more source

Analysis of the Error Sensitive Direction and Establishment of the Equation of Face Gear Tooth Surface with Error

open access: yesJixie chuandong, 2015
Based on the theory of multi-body system and the principle of gear meshing,according to six-axis five linkage gear CNC machine structure and the actual conditions of grinding,the grinding tooth surface equation of face gear with error of six-axis five ...
Ming Xingzu   +3 more
doaj  

Generating processing method and tooth surface deviation characteristics of non-circular face gear based on disk cutter

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing
Non-circular face gear is a new type of gear with variable transmission ratio, which has the advantages of simple closure condition and good interchangeability. However, the lack of effective processing methods limits its application and development.
Dawei LIU   +3 more
doaj   +1 more source

Thermal Error Modelling of a CNC Machine Tool Feed Drive System using FEA Method [PDF]

open access: yes, 2016
Recirculating ball screw systems are commonly used in machine tools and are one of the major heat sources which cause considerable thermal drift in CNC machine tools.
Abuaniza, Ayman   +3 more
core  

TRAJECTORY PLANNING AND SIMULATION STUDY OF B-AXIS POWER TOOL HOLDER

open access: yesJixie qiangdu, 2020
To study the pose state and coordinate transformation of different tool positions by establishing the interpolation equations,and obtain the mathematical model between the coordinate systems,and verify the validity according to the simulation results ...
LI XinWen, LI YuLian
doaj  

Pembangunan Modul Pengajaran Kendiri (MPK) keusahawanan dalam topik isu keusahawanan bagi pelajar diploma di politeknik [PDF]

open access: yes, 2004
Terdapat pelbagai kaedah pembelajaran yang telah diperkenalkan termasuklah kaedah pembelajaran yang menggunakan pendekatan pembelajaran bermodul secara kendiri.
Shaik Ismail, Siti Mahani
core  

Cooling system optimization of five-axis machine tool rotary table for improved thermal accuracy and energy efficiency

open access: yesCase Studies in Thermal Engineering
Thermal errors induced by inefficient cooling in rotary tables of five-axis machine tools significantly degrade machining accuracy and increase energy consumption, posing a critical challenge for high-precision and sustainable manufacturing.
Tze-Yin Lin, Kun-Yin Li
doaj   +1 more source

Reactive Atom Plasma (RAP) figuring machine for meter class optical surfaces [PDF]

open access: yes, 2013
A new surface figuring machine called Helios 1200 is presented in this paper. It is designed for the figuring of meter sized optical surfaces with form accuracy correction capability better than 20 nm rms within a reduced number of iterations.
Castelli, Marco   +4 more
core   +1 more source

Application of multi sensor data fusion based on Principal Component Analysis and Artificial Neural Network for machine tool thermal monitoring [PDF]

open access: yes, 2015
Due to the various heat sources on a machine tool, there exists a complex temperature distribution across its structure. This causes an inherent thermal hysteresis which is undesirable as it affects the systematic tool –to-workpiece positioning ...
Fletcher, Simon   +3 more
core  

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