THE INFLUENCE OF MEASUREMENT POSITION ON POSITIONING AND ANGULAR PITCH ERRORS ON THE POSITIONING ERROR OF THE TOOL CUTTING POINT IN CNC TURN-MILL MACHINES
With the advancement of manufacturing industries, the demand and trends in the field of machine tools are currently moving towards high-speed, precise, and efficient machining, as seen in CNC machine tools. Nevertheless, it should be noted that continuous use of machine tools can lead to a decline i...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/79748 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | With the advancement of manufacturing industries, the demand and trends in the field of machine tools are currently moving towards high-speed, precise, and efficient machining, as seen in CNC machine tools. Nevertheless, it should be noted that continuous use of machine tools can lead to a decline in accuracy and performance. One of the contributing factors is geometric errors due to imperfect geometry and dimensions of the machine components. Measurement of geometric errors is necessary to determine corrective actions that can be taken. The laser interferometer is chosen as the method for measuring geometric errors because it is considered the most accurate and efficient. However, several challenges in its operation can complicate the measurement process. One of these challenges is the presence of Abbe Offset error caused by the misalignment of the measurement axis with the reference axis (ball screw axis), resulting in measurement differences from nominal values.
In this research, measurements of geometric errors in positioning and angular pitch are conducted at different measurement positions to determine positioning errors at tool-cutting points that are challenging to directly measure. Furthermore, an analysis of the influence of measurement position on positioning errors is carried out due to Abbe Offset errors, along with correlations among geometric errors. Positioning errors at tool cutting points are determined using three different calculation methods: the Pythagorean theorem, linear regression, and interpolation of Abbe Offset data tables. Upon comparison, no significant differences are found among the results of the three methods used, validating the accuracy of the calculations.
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