Temat: CNC machine tools - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Data processing from the measuring device Ballbar QC20
Autorzy:: Košinár, M.
Kuric, I.
Tematy:: data processing
measurement device
CNC machine tools; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/102949.pdf Link otwiera się w nowym oknie
Opis:: The paper presents an innovative method of data processing from the measurement device – Ballbar QC20W. It was created with a program for data transformation (Visual Basic.NET) and it used Fourier transformation. The paper deals with the measuring method of CNC machine tools using Ballbar QC20W. There is an influence between qualitative parameters of machine tools and qualitative parameters of products (tolerances, roughness, etc.). It is very important to hold the stability of qualitative parameters of products as a key factor of production quality. Therefore, is also important to evaluate the accuracy of machine tools and make prediction of possible accuracy.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Identification and monitoring of noise sources of CNC machine tools by acoustic holography methods
Autorzy:: Józwik, J.
Tematy:: noise
acoustic holography
monitoring
CNC machine tools
machining; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/102033.pdf Link otwiera się w nowym oknie
Opis:: The paper presents the analysis of sound field emitted by selected CNC machine tools. The identification of noise sources and level was measured by acoustic holography for the 3-axis DMC 635eco machine tool and the 5-axis vertical machining centre DMU 65 monoBlock. The acoustic holography method allows precise identification and measurement of noise sources at different bandwidths of frequency. Detection of noise sources in tested objects allows diagnosis of their technical condition, as well as choice of effective means of noise reduction, which is highly significant from the perspective of minimising noise at the CNC machine operator workstation. Test results were presented as acoustic maps in various frequency ranges. Noise sources of the machine tool itself were identified, as well as the range of noise influence and the most frequent places of reflections and their span. The results of measurements were presented in figures and diagrams.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Testing of the delay time of wireless communication of CNC machine tools’ probes and controller
Autorzy:: Jankowski, M.
Woźniak, A.
Tematy:: probes
CNC machine tools
communication delay
measurement speed; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/220903.pdf Link otwiera się w nowym oknie
Opis:: Touch-trigger probes for CNC milling machines usually use wireless communication in the radio or IR band. Additionally they enable triggering signal filtering in order to avoid false triggers of the probe. These solutions cause a delay in trigger signal transmission from the probe to the machine tool controller. This delay creates an additional pre-travel component, which is directly proportional to the measurement speed and which is the cause of a previously observed but not explained increase of the pre-travel with the increase of the measurement speed. In the paper, a method of testing the delay time of triggering signal is described, an example of delay time testing results is presented and the previous, unexplained results of other researchers are analysed in terms of signal transmission delay.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Monitoring of the Noise Emitted by Machine Tools in Industrial Conditions
Autorzy:: Józwik, J.
Wac-Włodarczyk, A.
Michałowska, J.
Kłoczko, M.
Tematy:: noise monitoring
measurement
sound pressure
CNC machine tools; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/123074.pdf Link otwiera się w nowym oknie
Opis:: The paper presents an analysis of noise emitted by selected machine tools in a production hall (under industrial conditions). Noise monitoring is a fundamental task for maintaining workplaces which are safe and healthy. This paper presents the noise measurements obtained for several machine tools, performed in accordance with the PN ISO 230–5:2002 standard. The identification of noise sources and levels was conducted by means of the UNIT 352 measurement system for DMU 50, BGO-CNC/RV/R, FU 251, FW 801, FWC 25/H. Detection of noise sources in the tested machine tools allows to maintain safety of workers and effective means of noise reduction, which are highly significant from the perspective of minimising noise at various workstations. The method of performing noise measurements at workstations using specific machines is normalised, so that the results of such measurements for different machines could be compared. The test results were presented in the form of diagrams and tables. The results of the tests are concluded by a detailed recommendation for the CNC machine tool operators to use hearing protection when at work. The results showed that the level of noise at the operator’s workstation significantly exceeds the standard at certain machining parameters.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Computer Aided Optimal Design of Servo Drives for CNC Machine Tools
Autorzy:: Pandilov, Z.
Dukovski, V.
Tematy:: computer aided design
servo drives
CNC machine tools
optimal; Pokaż więcej
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Powiązania:: https://bibliotekanauki.pl/articles/971109.pdf Link otwiera się w nowym oknie
Opis:: Generally servo drives for CNC machine tools have a very simple kinematic structure. But the optimal servo drives design is a problem which consists of an appropriate selection of AC or DC motors and mechanical transmission elements, which must satisfy some conditions as a system. Because of the extensive calculations and optimization algorithms, original computer programs are developed.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Optimization procedures for machining operations on CNC machine tools
Procedury optymalizacji operacji obróbki skrawaniem dla obrabiarek CNC
Autorzy:: Niesłony, P.
Grzesik, W.
Tematy:: optymalizacja
obrabiarki CNC
obróbka wirtualna
optimization
CNC machine tools
virtual machining; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/151178.pdf Link otwiera się w nowym oknie
Opis:: This paper describes some advanced optimisation procedures for machining operations performed on CNC machine tools. The presented problems are divided into two sections. The first section gives practical solutions concerning tool path optimisation by using different genetic algorithm methods and creation of virtual machines. The second section provides some important commercial solutions, in particular commercially available optimisation systems. The most important optimisation areas of the cutting process signalized by the industrial users are considered.
Artykuł przedstawia zaawansowane procedury optymalizacji procesów obróbki skrawaniem dedykowane dla obrabiarek sterowanych numerycznie CNC. Opisano praktyczne rozwiązania dotyczące między innymi problemów optymalizacji toru ruchu narzędzia, ich długości czy doboru racjonalnych parametrów technologicznych. Uwzględniono różne koncepcje sposobów prowadzenia kompleksowej symulacji procesu wytwarzania elementów maszyn na drodze obróbki ubytkowej. Zwrócono uwagę na konieczność globalnego podejścia do problemu optymalizacji procesu wytwarzania. Przejawia się to w konieczności uwzględniania procesu wytwarzania, kontroli jak również aspektu doboru obrabiarki i nie często także montażu wytworzonych części maszyn. Najciekawsze rozwiązania praktyczne wybranych obszarów optymalizacji przedstawiono w oparciu o funkcjonujące, reprezentatywne pakiety programów komercyjnych. Stwierdzono, że mimo wielu możliwych kryteriów optymalizacji procesu obróbki skrawaniem najczęściej wykorzystywanym jest podejście ekonomiczne, przy równoczesnym zachowaniu wysokich wymogów co do jakości funkcjonalnej wyrobu. Oczekiwaniem rynku jest stworzenie komercyjnych systemów ekspertowych ujmujących całościowo problem optymalizacji procesu wytwarzania części maszyn. Dąży się do tego poprzez zintegrowanie obszarów symulacji i optymalizacji procesu technologicznego z optymalizacją obrabiarek (VM), a kończąc na procesie optymalizacji produkcji (VP) na bazie łańcuchów programowania CAD-CAM-CNC.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Measurements of temperature of CNC machine tool ball screw utilising IR method
Autorzy:: Zapłata, J.
Tematy:: thermography
ball screws
CNC machine tools
thermal error
obrabiarka CNC
termografia
czujnik temperatury; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/265781.pdf Link otwiera się w nowym oknie
Opis:: In numerous papers it is proposed to use IR measurements of feed axis ball screw temperature distribution in order to compensate CNC machine tool thermal errors. The paper aims to validate reliability of the IR measurements in application to the feed axes ball screws. The identification of key factors influencing the accuracy of the IR measurements of ball screw temperature distribution has been conducted. A test-bench utilizing a ball screw assembly with built-in temperature sensors was introduced and the experimental data are presented along with conclusions.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Robotical automation in CNC machine tools: a review
Autorzy:: Soori, Mohsen
Jough, Fooad Karimi Ghaleh
Dastres, Roza
Arezoo, Behrooz
Tematy:: robotics
automation
CNC machine tools
automated material handling
automatic tool changin; Pokaż więcej
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Powiązania:: https://bibliotekanauki.pl/articles/58907247.pdf Link otwiera się w nowym oknie
Opis:: Robotics and automation have significantly transformed Computer Numerical Control (CNC) machining operations, enhancing productivity, precision, and efficiency. Robots are employed to load and unload raw materials, workpieces, and finished parts onto CNC machines. They can efficiently handle heavy and bulky components, reducing the demand of manual labour and minimizing the risk of injuries. Robots can also be used in CNC machine tools to perform tasks such as automatic tool changing system, part inspection, and workpiece positioning. Automation technologies, including in-line inspection systems and Non-Destructive Testing (NDT) methods, can be integrated into CNC machining cells to enhance accuracy and reduce scrap and rework in machining operations. These systems collect real-time data on process parameters and machine tool performance to predict maintenance, optimize machining parameters, and improve overall efficiency. In the current study, applications of robotics and automation in the modification of CNC machine tools are reviewed and discussed. Different applications of robotics and automation in CNC machine tools, such as automated material handling, automatic tool changing, robotic work cells, adaptive machining, machine tending, quality inspection, data monitoring and analysis, and production line integration, are discussed. Thus, by analysing recent achievements in published papers, new ideas and concepts of future research works are suggested. As a result, accuracy as well as productivity in the process of part production can be enhanced by applying robotics and automation in CNC machining operations.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Dynamic Analysis of the Starting and Braking of the Table of CNC Machine Tool
Autorzy:: Józwik, Jerzy
Zawada-Michałowska, Magdalena
Moń, Damian
Tematy:: dynamics analysis
vision systems
CNC machine tool
feed rate
CNC machine tools accuracy
CNC machine table; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2201776.pdf Link otwiera się w nowym oknie
Opis:: The aim of the paper is a dynamic analysis of the starting and braking of the table of a numerically controlled CNC machine tool during idle motion. The experimental test was performed on the vertical table of the FV580A machining centre using the Phantom v1610 high-speed vision camera. The dynamics characteristics of the table movement were registered and the dynamics estimates of the movement were determined. The influence estimation of the parameters of the machine tool table motion on the value of the determined estimates was made. The results of measurements were discussed and guidelines and in order to minimise disturbances were formulated. The test results were summarised and discussed in the form of charts and tables. The directions of further research in the discussed subject area were also defined
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Key fault propagation path identification of CNC machine tools based on maximum occurrence probability
Autorzy:: Zhang, Yingzhi
Zhou, Yutong
Yang, Fang
Wang, Zhiqiong
Sun, Mo
Tematy:: fault propagation
CNC machine tools
key fault propagation path
improved Pagerank
fault propagation probability; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Powiązania:: https://bibliotekanauki.pl/articles/27312788.pdf Link otwiera się w nowym oknie
Opis:: In order to revise the deviation caused by ignoring the dynamic character of fault propagation in traditional fault propagation path identification methods, a method based on the maximum occurrence probability is proposed to identify the key fault propagation path. Occurrence probability of fault propagation path is defined by dynamic importance, dynamic fault propagation probability and fault rate. Taking the fault information of CNC machine tools whichsubject to Weibull distribution as an example, this method has been proven to be reasonable through comparative analysis. Result shows that the key fault propagation path of CNC machine tools is not unique, but changes with time. Before 1000 hours, key fault propagation path is electrical component (E) to mechanical component (M); after 1000 hours, key fault propagation path is auxiliary component (A) to mechanical component (M). This change should be taken into account when developing maintenance strategies and conducting reliability analysis.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Informacja

Wyszukujesz frazę "CNC machine tools" wg kryterium: Temat