scholarly journals Remanufacture of rotary tables for heavy duty machine tools

2020 ◽  
Vol 317 ◽  
pp. 03001
Author(s):  
Dan Prodan ◽  
Anca Bucuresteanu ◽  
Adrian Motomancea ◽  
Alina Ovanisof
Keyword(s):  
Experimental Research ◽  
Machine Tools ◽  
Cnc Machine Tools ◽  
Rotary Table ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Cnc Machines ◽  
Suspension Systems ◽  
Milling Machines

In this paper, the authors present some of the theoretical and experimental research conducted on the occasion of rotary tables remanufacturing for CNC machine tools belonging to Boring and Milling Machines family. They give the constructive solutions applied on CNC machines and the specific systems of guiding, locking and driving. The authors present also the modifications required when passing from CC variant to CNC variant in terms of locking - indexing systems and hydraulic suspension systems. The paper presents different achievements but insists particularly on the remanufacture of the rotary table with useful area 1700x2000 mm with longitudinal travel of 1000 mm (MRD 1700x2000/1000).

Rotary Tables for Machine Tools

2016 ◽  
Vol 841 ◽  
pp. 168-172
Author(s):  
Dan Prodan ◽  
Anca Bucuresteanu ◽  
Tiberiu Dobrescu ◽  
Adrian Motomancea
Keyword(s):  
Experimental Research ◽  
Machine Tools ◽  
Cnc Machine Tools ◽  
Rotary Table ◽  
Calculation Methods ◽  
Cnc Machine ◽  
Dynamic Conditions

In this paper the authors present some theoretical and experimental research carried out during the manufacture of a rotary table for CNC machine-tools AF type. There are shown the calculation methods in static and dynamic conditions for the indexable rotary tables and also for those that operate as numerically controlled “B” axes. The calculation methods were tested by manufacturing several such tables intended for the machines belonging to AF(P)100-180 range.

CNC Machine Tools

2009 ◽  
pp. 165-187 ◽  
Author(s):  
Xun Xu
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Manufacturing Industry ◽  
Human Action ◽  
Cnc Machining ◽  
Cnc Machine Tools ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Cnc Machines ◽  
Time Required

The introduction of CNC machines has radically changed the manufacturing industry. Curves are as easy to cut as straight lines, complex 3-D structures are relatively easy to produce, and the number of machining steps that required human action has dramatically reduced. With the increased automation of manufacturing processes with CNC machining, considerable improvements in consistency and quality can be achieved. CNC automation reduced the frequency of errors and provided CNC operators with time to perform additional tasks. CNC automation also allows for more flexibility in the way parts are held in the manufacturing process and the time required to change the machine to produce different components. In a production environment, a series of CNC machines may be combined into one station, commonly called a “cell”, to progressively machine a part requiring several operations. CNC controller is the “brain” of a CNC machine, whereas the physical configuration of the machine tool is the “skeleton”. A thorough understanding of the physical configuration of a machine tool is always a priority for a CNC programmer as well as the CNC machine tool manufacturers. This chapter starts with a historical perspective of CNC machine tools. Two typical types of CNC machine tools (i.e. vertical and horizontal machining centres) are first discussed. Tooling systems for a CNC machine tool are integral part of a CNC system and are therefore elaborated. Also discussed are the four principal elements of a CNC machine tool. They are machine base, machine spindle, spindle drive, and slide drive. What letter should be assigned to a linear or rotary axis and what if a machine tool has two sets of linear axes? These questions are answered later in the chapter. In order for readers to better comprehend the axis and motion designations, a number of machine tool schematics are given.

scholarly journals An approach to creation of a unified system of programming CNC machines in the dialog mode

2018 ◽  
Vol 224 ◽  
pp. 01101 ◽  
Author(s):  
Liliya I. Martinova ◽  
Nikolay N. Fokin
Keyword(s):  
Machine Tools ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Cnc Machines ◽  
Interactive Programming ◽  
Programming Systems

The tendencies in the development of part programs for CNC machine tools are considered, the used programming methods are analysed, and the compatibility problem of interactive programming systems is proved. An approach is proposed with the use of canned cycles, which allows to unify the process of dialog programming for machines with CNC systems from different manufacturers. Practical aspects of creating part programs in dialog mode for machines equipped with CNC systems Siemens, Fanuc, Heidenhain, AxiOMA Control and Balt-Systems are presented.

Fever Analysis and Engineering Applications of the Heavy Machine Tool's Main Bearing

2013 ◽  
Vol 690-693 ◽  
pp. 1983-1987
Author(s):  
Shui Sheng Chen ◽  
Shuang Qiang Li ◽  
Zhong Ping Hua ◽  
Chen Dai
Keyword(s):  
Machine Tools ◽  
Rolling Bearing ◽  
Cnc Machine Tools ◽  
Cnc Milling ◽  
Practical Application ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Main Bearing ◽  
Main Method ◽  
Heavy Machine

Large heavy-duty CNC machine tools commonly used rolling bearing as Main bearing. This paper analyses the causes of Main bearing fever deeply, pointing out the mechanism of the bearing heating; combined with the practical application of the TK6926 landing CNC milling and borings main bearing, putting forward the main method to reduce the rolling bearing fever and achieved good results.

scholarly journals An Approach for Error Allocation of Heavy-duty CNC Machine Tools

2017 ◽  
Author(s):  
Zi-ling ZHANG ◽  
Li-gang CAI ◽  
Zhi-feng LIU ◽  
Qiang CHENG ◽  
Yin QI
Keyword(s):  
Machine Tools ◽  
Cnc Machine Tools ◽  
Heavy Duty ◽  
Cnc Machine

scholarly journals Development of a Synthesis Method for CNC Machine Tools Remote Monitoring System by Using Web Components

2021 ◽  
Vol 346 ◽  
pp. 03072
Author(s):  
Ilya Kovalev ◽  
Nadezhda Chervonnova ◽  
Ramir Abdulov ◽  
Akram Al Khoury
Keyword(s):  
Monitoring System ◽  
Machine Tools ◽  
Synthesis Method ◽  
Cnc Machine Tools ◽  
Monitoring Systems ◽  
Cnc Machine ◽  
Web Page ◽  
Cnc Machines ◽  
Remote Monitoring System ◽  
Technological Data

The article shows an approach to the synthesis of monitoring systems for CNC machines. Describes the main Web components and libraries used to collect technological data and display it for various users of CNC machines. The article demonstrates the practical results of the synthesis of the monitoring system for the CNC “AxiOMA Control” with the ability to select the parameters displayed on the Web page for the operator and adjuster of the CNC machine.

Program CNCs

2009 ◽  
pp. 188-229
Author(s):  
Xun Xu
Keyword(s):  
Error Detection ◽  
Machine Tools ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Cnc Machines ◽  
Programming Tool ◽  
Cad Cam ◽  
Cnc Programming ◽  
G Code ◽  
Cam Systems

A CNC machine can be programmed in different ways to machine a workpiece. In addition to creating the cutting program, many other factors also need to be considered or programmed. These include workholding devices, cutting tools, machining conditions as well as the machining strategy. The first generation CNCs were programmed manually and punched tapes were used as a medium for transferring the machine control data (MCD), that is, G-codes into a controller. Tapes were later replaced by RS232 cables, floppy disks, and finally standard computer network cables. Today’s CNC machines are controlled directly from files created by CAD/CAM or CAM software packages, so that a part or assembly can go directly from design to manufacturing without the need of producing a drafted paper drawing of the component. This means that for the first time, bringing design and manufacturing under the same automation regime becomes a reachable target. Error detection features give CNC machines the ability to alert the operator in different ways including giving a ring to the operation’s mobile phone if it detects that a tool has broken. While the machine is awaiting replacement on the tool, it would run other parts that are already loaded up to that tool and wait for the operator. The focus of this chapter is on a detailed account of the basics of CNC programming, and the emphasis is on G-code and Automatic Programming Tool (APT). G-code is still the dominant manual programming language for CNC machine tools. It is also the main form of control commands many CAD/CAM (or CAM) systems output. APT was developed soon after G-codes and CNC machine tools were developed to alleviate the drudgery work of straight G-code programming. Modern CAD/CAM systems these days are now becoming the main-stream tools for CNC programming.

Electromagnetic compatibility in CNC machines upgrade

2020 ◽  
Vol 23 (3) ◽  
pp. 90-96
Author(s):  
Arcadiy Yu. Antonov ◽  
Dmitriy P. Danilaev
Keyword(s):  
Machine Tools ◽  
Electromagnetic Compatibility ◽  
Cnc Machine Tools ◽  
Cnc Machine Tool ◽  
Electronic Control ◽  
Cnc Machine ◽  
Electromagnetic Environment ◽  
Cnc Machines ◽  
Control Units ◽  
Element Base

Abtract One of the types of modernization of CNC machines is the replacement of outdated electronic control units with more functional and compact ones, made on a modern element base. However, in the course of work on the modernization of CNC machines, characteristic problems of electromagnetic compatibility arise. The report examines the features of the electromagnetic compatibility of equipment, blocks and assemblies of CNC machines during modernization. Based on the analysis of the factors characterizing the electromagnetic environment, typical failures of the electronic part of the control system of a CNC machine tool during testing, the need for the development of measures to ensure EMC is shown. All measures to ensure electromagnetic compatibility are not intended to reduce degradation, but to ensure the full implementation of all equipment functionality. General solutions are proposed that are applicable to the modernization of most second-generation CNC machine tools.

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