Development of an on-machine profile measurement system in ELID grinding for machining aspheric surface with software compensation
Efficient manufacture of dimensionally accurate optical surface on hard and brittle materials is a major concern for optoelectronic industry. Electrolytic in process dressing (ELID) grinding is proved as a reliable process to achieve this optical quality nano-surface finish on hard and brittle mat...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2008
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/30946/1/MTM_ELID.pdf http://irep.iium.edu.my/30946/ http://dx.doi.org/10.1016/j.ijmachtools.2007.11.005 |
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| Summary: | Efficient manufacture of dimensionally accurate optical surface on hard and brittle materials is a major concern for optoelectronic
industry. Electrolytic in process dressing (ELID) grinding is proved as a reliable process to achieve this optical quality nano-surface finish
on hard and brittle materials. Besides surface finish it is important to ensure dimensional accuracy by improving profile and form
accuracy of the ground aspheric surface. Kinematic factors are commonly considered the reasons for the dimensional inaccuracy in a
machined part. Software compensation is a direct and economical method to overcome several kinematic factors and improve the
dimensional accuracy. Last, but most important, is the monitoring of achieved surface profile to ensure more accurate profile radius in
the finished part. So an on-machine profile measurement system based on coordinate measuring machine (CMM) principle has been
developed to check the profile radius of the ground surface. In this study software compensation was applied in ELID grinding of an
aspheric surface in order to compensate the wheel wear until the measured surface profile machined on BK7 glass reaches within
tolerable limit. |
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