Measurement of Screw Thread Profile

A New Compensation Method for Measurement of Thread Pitch Diameter by Profile Scanning

For measurement of existing thread parameters using profile scanning, system error increases as pitch diameter, difference between the calibrating thread and measuring thread increases with the single gauge calibration method. There are several alignment deviations affecting the measurement of pitch diameter. To reduce the system error, a compensation method using two standard thread gauges to ...

On the Measurement of Thread Measuring Wires

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We present the design and implementation of Arachne, a threads system that can be interfaced with a communications library for multi-threaded distributed computations. In particular, Arachne supports thread migration between heterogeneous platforms, with dynamic stack size management and recursive thread functions. Arachne is eecient, exible and portable | it is based entirely on C and C++. To ...

Evolutionary Algorithm for Measurement of Screw Parameters

In this paper we propose to apply the evolutionary algorithm for measurement of screw thread parameters. The proposed method is based on a vision system with the web camera. This method can be applied to real objects quality control and object inspection. Key-Words: evolutionary algorithm, parameter measurement, optimization, vision system.

General Method for Screw Compressor Profile Generation

The paper presents a general algorithm for the specification of a screw machine geometry. The conjugancy condition was solved numerically which thereby enables a variety of primary arc curves to be introduced. In addition, an optional numerical derivation of primary arcs enables any analytical function and even discrete point functions to be used for the primary arc. The approach also simplifie...