ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE
The quality of cutting machines is affected by several factors that can be directly or indirectly influenced by manufacturers, technicians and users of machine tools. The most critical qualitative evaluation parameters of machine tools include accuracy and stability. Investigations of accuracy and r...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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CTU Central Library
2014-02-01
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| Series: | Acta Polytechnica |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/ap/article/view/2057 |
| _version_ | 1819142795824201728 |
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| author | Iveta Onderová Lubomír Šooš |
| author_facet | Iveta Onderová Lubomír Šooš |
| author_sort | Iveta Onderová |
| collection | DOAJ |
| description | The quality of cutting machines is affected by several factors that can be directly or indirectly influenced by manufacturers, technicians and users of machine tools. The most critical qualitative evaluation parameters of machine tools include accuracy and stability. Investigations of accuracy and repeatable positioning accuracy were essential for the research presented in this paper. The aim was to develop and experimentally verify the design of a methodology for cutting centers aimed at achieving the desired working precision. Before working on the topic described here, it was necessary to make several scientific analyses, which are summarized in this paper. We can build on the initial working hypothesis that by improving the technological parameters (e.g. by increasing the working speed of the machine, or by improving the precision of the positioning) the quality of the cutting machine will also be improved. For the purposes of our study, several investigated parameters were set affecting positioning accuracy, such as rigidity, positioning speed, etc. First, the stiffness of the portal structure of the cutting machine was analyzed. FEM analysis was used to investigate several alternative structures of the cutting machine, and also an innovative solution for beam mounting. The second step was to integrate two types of drives into the design of the cutting machine. The first drive is a classic rack and pinion drive for cutting machines. To increase (improve) the working speed of the machine, linear motors were designed as an alternative drive. The portal of the cutting machine was designed for a working speed of 260mmin−1 and acceleration of 25 m. s−2. The third step was based on the results of the analysis. In collaboration with Microstep, an experimental cutting machine in a portal version was produced using linear synchronous motors driving the portal on both sides, and with direct linear metering of its position. In the fourth step, an experiment was designed and conducted to explore the positioning accuracy and the repeatable positioning accuracy. |
| first_indexed | 2024-12-22T12:16:02Z |
| format | Article |
| id | doaj.art-04561077be8d49e18e6439a8c1fbd05e |
| institution | Directory Open Access Journal |
| issn | 1210-2709 1805-2363 |
| language | English |
| last_indexed | 2024-12-22T12:16:02Z |
| publishDate | 2014-02-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica |
| spelling | doaj.art-04561077be8d49e18e6439a8c1fbd05e2022-12-21T18:26:09ZengCTU Central LibraryActa Polytechnica1210-27091805-23632014-02-0154110.14311/AP.2014.54.00632041ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINEIveta Onderová0Lubomír Šooš1Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, Institute of Manufacturing Systems, Environmental Technology and Quality ManagementSlovak University of Technology in Bratislava, Faculty of Mechanical EngineeringThe quality of cutting machines is affected by several factors that can be directly or indirectly influenced by manufacturers, technicians and users of machine tools. The most critical qualitative evaluation parameters of machine tools include accuracy and stability. Investigations of accuracy and repeatable positioning accuracy were essential for the research presented in this paper. The aim was to develop and experimentally verify the design of a methodology for cutting centers aimed at achieving the desired working precision. Before working on the topic described here, it was necessary to make several scientific analyses, which are summarized in this paper. We can build on the initial working hypothesis that by improving the technological parameters (e.g. by increasing the working speed of the machine, or by improving the precision of the positioning) the quality of the cutting machine will also be improved. For the purposes of our study, several investigated parameters were set affecting positioning accuracy, such as rigidity, positioning speed, etc. First, the stiffness of the portal structure of the cutting machine was analyzed. FEM analysis was used to investigate several alternative structures of the cutting machine, and also an innovative solution for beam mounting. The second step was to integrate two types of drives into the design of the cutting machine. The first drive is a classic rack and pinion drive for cutting machines. To increase (improve) the working speed of the machine, linear motors were designed as an alternative drive. The portal of the cutting machine was designed for a working speed of 260mmin−1 and acceleration of 25 m. s−2. The third step was based on the results of the analysis. In collaboration with Microstep, an experimental cutting machine in a portal version was produced using linear synchronous motors driving the portal on both sides, and with direct linear metering of its position. In the fourth step, an experiment was designed and conducted to explore the positioning accuracy and the repeatable positioning accuracy.https://ojs.cvut.cz/ojs/index.php/ap/article/view/2057 |
| spellingShingle | Iveta Onderová Lubomír Šooš ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE Acta Polytechnica |
| title | ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE |
| title_full | ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE |
| title_fullStr | ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE |
| title_full_unstemmed | ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE |
| title_short | ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE |
| title_sort | analysis of parameters affecting the quality of a cutting machine |
| url | https://ojs.cvut.cz/ojs/index.php/ap/article/view/2057 |
| work_keys_str_mv | AT ivetaonderova analysisofparametersaffectingthequalityofacuttingmachine AT lubomirsoos analysisofparametersaffectingthequalityofacuttingmachine |