Rake angle measurement of inclined slotting cutter
This paper analyses the blade shape, the parameters of rake angle of slotting cutter. The theoretical analysis process of a novel rake angle error measurement is introduced, which is built on the theory that the rake face of the inclined slotting cutter is a flat surface. For the systematic errors is caused by inaccurate measurement, the paper give in-depth analysis in various situation. By testing in the GD40-type CNC Gear Measurement Center, the accuracy testing results validate the correctness of the method.
Notice of Retraction3D probe radius compensation in measurement of characterized curves of complex helicoidal surface
Probe radius bias processing is a key technology in CNC measuring center. Based on the principal that the trace of the center of the probe is the offset surface of the measured helicoidal surface, a theoretical model is established for describing the trace surface. And three-dimensional probe radius compensation is proposed. Finally, the measuring example is given. The result shows that the three-dimensional probe compensation is accurate and convenient to measuring characterized curves of complex helicoidal surface.
Force prediction models and CAD/CAM software for helical tooth milling processes. I. Basic approach and cutting analyses
The need for reliable quantitative machining performance information for efficient and effective use of machining operations is discussed, as are the recent developments of predictive models and modular software for forces and power in practical operations based on a unified mechanics of cutting approach. The cutting action, comprehensive predictive force models and software modules for peripheral milling, end-milling and slotting operations are developed at three levels of sophistication. The first and basic or ‘ideal case’ model assumes perfectly rigid cutters with no eccentricity and includes all the important process variables, while the second or ‘eccentricity’ model also includes the inevitable eccentricity noted in practice. The third and most sophisticated ‘deflection’ model incorporates both eccentricity and cutter deflection in addition to the many process variables. The necessity to individually study each type of milling operation in order to identify, assess and verify the appropriate predict...