TY - GEN

T1 - Feeling spindle for process force measurement in tool grinding

AU - Denkena, B.

AU - Klemme, H.

AU - Buhl, H.

N1 - Funding Information: The results presented were obtained within research project “Productivity increase in tool grinding with the help of a “feeling” spindle” (417859800)”. The authors thank the German Research Foundation (DFG), the “Sieglinde Vollmer Stiftung” and the VOLLMER WERKE Maschinenfabrik GmbH for their support.

PY - 2023

Y1 - 2023

N2 - During tool grinding of workpieces with a large length-to-diameter ratio, process forces cause high deflections impairing the machining accuracy. To reduce such workpiece deflections, a support steady rest is commonly used. However, the support steady rest increases manual set-up effort, thereby decreasing productivity. In order to substitute the support steady rest, an innovative approach is to calculate the workpiece deflection by measuring the process forces using a compliance model. “Feeling” machine tools with structure-integrated force sensing capabilities are a promising approach to detect such process forces. In order to achieve high measurement accuracies when measuring the process forces, structure-integrated sensors must be placed close to the process. Therefore, a novel sensory grinding spindle is being developed for grinding of tools guiding the workpiece during machining. Sensors are integrated into the shaft, thereby enabling process force measurement during the tool grinding process. Equipped with semiconductor strain gauges and a contactless data transmission, the sensory spindle is able to measure the process forces acting on the workpiece and thus to provide force measurement data with high signal quality. With the introduced concept, forces with a resolution of higher than σ = 3.7 N were measured.

AB - During tool grinding of workpieces with a large length-to-diameter ratio, process forces cause high deflections impairing the machining accuracy. To reduce such workpiece deflections, a support steady rest is commonly used. However, the support steady rest increases manual set-up effort, thereby decreasing productivity. In order to substitute the support steady rest, an innovative approach is to calculate the workpiece deflection by measuring the process forces using a compliance model. “Feeling” machine tools with structure-integrated force sensing capabilities are a promising approach to detect such process forces. In order to achieve high measurement accuracies when measuring the process forces, structure-integrated sensors must be placed close to the process. Therefore, a novel sensory grinding spindle is being developed for grinding of tools guiding the workpiece during machining. Sensors are integrated into the shaft, thereby enabling process force measurement during the tool grinding process. Equipped with semiconductor strain gauges and a contactless data transmission, the sensory spindle is able to measure the process forces acting on the workpiece and thus to provide force measurement data with high signal quality. With the introduced concept, forces with a resolution of higher than σ = 3.7 N were measured.

UR - http://www.scopus.com/inward/record.url?scp=85176545190&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85176545190

T3 - Laser Metrology and Machine Performance XV - 15th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2023

SP - 229

EP - 240

BT - Laser Metrology and Machine Performance XV

A2 - Longstaff, Andrew

A2 - Yu, Nan

T2 - 15th International Conference and Exhibition on Laser Metrology, Coordinate Measuring Machine and Machine Tool Performance, LAMDAMAP 2023

Y2 - 14 March 2023 through 15 March 2023

ER -