HIGH-PRECISION MEASUREMENT OF TOOL-TIP DISPLACEMENT USING STRAIN GAUGES IN PRECISION FLEXIBLE LINE BORING
✍ Scribed by CHEN-JUNG LI; A.GALIP ULSOY
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 228 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0888-3270
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✦ Synopsis
Precision displacement measurement is a critical element to achieve active control for high-precision (e.g. 5 m) #exible line boring. Since current measurement methods are di$cult to apply in this application, a new measurement method has been developed. This paper presents a new strain-gauge-based method for the high-precision vibration measurement of a beam. This method is based on the fact that the vibration displacement can be expressed in terms of an in"nite number of vibration modes and be related to the measured strains through the strain}displacement relationship. By placing multiple sets of strain gauges, multiple modes can be taken into account to achieve high-precision measurement. Both simulation and experimental results were obtained and are provided for validation. From these results, it can be concluded that this new measurement method is applicable to high-precision #exible line boring, enabling active control to compensate for the tool-tip displacement to achieve a high-precision machining process.