Process intermittent measurement of tools and workpieces

Hermann, Gyula

doi:10.1016/0278-6125(85)90006-8

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…As a contact scanning probe, the triggered signal has to be locked before it changes to the analog scanning mode. To ensure the triggered position is precise and repeatable within a nanometer range, the double-trigger method as used in conventional in-cycle gauging of machine tools [14] is adopted for use in the probe system calibration.…”

Section: Calibration Of the Probe Systemmentioning

confidence: 99%

A scanning contact probe for a micro-coordinate measuring machine (CMM)

Fan

Fang

Wang

et al. 2010

Meas. Sci. Technol.

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A new high precision contact scanning probe able to measure miniature components on a micro/nano-coordinate measuring machine (CMM) is proposed. This contact probe is composed of a fiber stylus with a ball tip, a floating plate and focus sensors. The stylus is attached to a floating plate, which is connected to the probe housing via four elastic wires. When the probe tip is touched and then deflected by the workpiece, the wires experience elastic deformations and the four mirrors mounted on the plate will be displaced. These displacements can be detected by four corresponding laser focus probes. To calibrate this touch trigger probe, a double-trigger method is developed for a high-speed approach and a low-speed touch. Experimental results show that the probe has a symmetric contact property in the horizontal XY plane. The contact force is found to be about 109 µN. The standard deviation of the unidirectional touch is less than 10 nm and the pre-travel distance is around 10 nm with a standard deviation of less than 3 nm.

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Section: Calibration Of the Probe Systemmentioning

confidence: 99%

A scanning contact probe for a micro-coordinate measuring machine (CMM)

Fan

Fang

Wang

et al. 2010

Meas. Sci. Technol.

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“…In recent years, following the development of Renishaw touch-trigger probe, there has been much interest in on-machine measurement (OMM) [7]. Note that all the above errors are defined as relative displacements between the tool tip and the work surface in a direction normal to the machined surface at the point of interest along the tool path.…”

Section: An Inspection Protocol For Identifying the Elastic Deflectiomentioning

confidence: 99%

Towards Autonomous Compilation of Turning Force Databases: Utilization of on-Machine Measurement of Machined Parts

Liu

Venuvinod

2001

Machining Science and Technology

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Several hitherto unrealized advantages would follow if each shop floor machine could compile its own machining database autonomously. This paper focuses on CNC turning to develop a shop floor friendly method for determining the cutting force component normal to the machined surface as well as the lumped static stiffness parameters of the machining set up solely from onmachine part inspection data gathered immediately after machining. It is shown that one can also estimate the shear and chip flow angles as well as the tangential and feed forces by combining this method with a suitable predictive model of the turning operation.

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“…On-machine measurement is a sensor-based machine tool measuring system. Today, wide ranges of various touch trigger probes have been applied to accurate on-machine measurement and inspection on CNC machining centers (Hermann, 1985;Janeczko, 1986;Lynch, 1994;Mou and Liu, 1992;Nickols and Martin, 1992;Szafarczyk and Missiewski, 1983;Zhou et al, 1996). It is necessary that probe-compatible software and hardware are available for the machine tool to respond to touch probe signals.…”

Section: Introductionmentioning

confidence: 99%

On‐machine measurement of workpieces with the cutting tool

Liu

Venuvinod²,

Ostafiev³

1998

Integrated Manufacturing Systems

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A new system for on‐machine measurement of workpieces is described. The system is based on a fine touch sensor that enables the cutting tool itself to act as a contact probe to inspect the workpiece. The proposed measurement technology combines the Q‐setter with the fine touch sensor. This low cost measurement system is applied to automatic workpiece setup and improving workpiece dimensional accuracy on a CNC turning center. It is shown that using the proposed measurement system results in workpiece setting time decrease and workpiece machining accuracy improvement. The development of the on‐machine measurement system makes the fine touch sensor extremely attractive for CNC machine retrofitting.

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Process intermittent measurement of tools and workpieces

Cited by 10 publications

References 2 publications

A scanning contact probe for a micro-coordinate measuring machine (CMM)

A scanning contact probe for a micro-coordinate measuring machine (CMM)

Towards Autonomous Compilation of Turning Force Databases: Utilization of on-Machine Measurement of Machined Parts

On‐machine measurement of workpieces with the cutting tool

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