Investigation of vibration and surface roughness in micro milling of PMMA
This paper presents the vibration and surface roughness issue of poly methyl methacrylate (PMMA) workpiece produced by micro end milling using integrated multi-process machine tools DT 110 (Mikrotools Inc., Singapore) with control parameter; spindle speed, feed rate, and depth of cut. The vibrati...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications Ltd., Switzerland
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/27008/ http://irep.iium.edu.my/27008/ http://irep.iium.edu.my/27008/ http://irep.iium.edu.my/27008/1/AMM.217-219.2187.pdf |
| Summary: | This paper presents the vibration and surface roughness issue of poly methyl methacrylate
(PMMA) workpiece produced by micro end milling using integrated multi-process machine tools DT
110 (Mikrotools Inc., Singapore) with control parameter; spindle speed, feed rate, and depth of cut.
The vibration was measured using accelerometer, DYTRAN Instrument and the average surface
roughness Ra was measured using Wyko NT1100. The optimum solution for minimum average
vibration is 64.3 Hz with spindle speed 3000 rpm, feed rate 2 mm/min, and depth of cut 1.5 μm.
However, the optimum solution for minimum average surface roughness, Ra is 0.352 μm with spindle
speed 2000 rpm, feed rate 2 mm/min, and depth of cut 1.5 μm. The micro end milling parameters are
suitable to machine PMMA to get good precision surface roughness. The analysis revealed that the
feed rate and depth of cut is the most influential parameter on vibration during machining process
meanwhile for average surface roughness, Ra spindle speed is the most influential parameter. |
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