NC Parameter Research Articles

The Evolution Method by Changing Software on the Machine Tool to be Adapted for Production Culture

This paper proposes an evolutional changing method of the machine tool performance adapted for production culture. The production culture differs from country/era to country/era. Each production cultural sphere needs each survival processing method in belonging the country or the era. So, every specific manufacturing facility performance is necessary to correspond to the vague production culture. Therefore, we propose the method to turn the ambiguous cultural attribute into the technical attribute by using a tree structure and more to estimate the technical attribute at the quantified dignity with Quality Function Deployment. As a result, we can carry out the feasibility study changed the NC parameter as an example of the evolutional changing method to adapt the machine tool performance for production culture.

A SCREENING MECHANISM FOR EXTRA W AND Z GAUGE BOSONS

We generalize a previous construction of a fermiophobic model to the case of more than one extra W and Z gauge bosons. We focus in particular on the existence of screening configurations and their implication on the gauge boson mass spectrum. One of these configurations allows for the existence of a set of relatively light new gauge bosons, without violation of the quite restrictive bounds coming from the ρ NC parameter. The links with Bess and degenerate Bess models are also discussed. Also the signal given here by this more traditional gauge extension of the SM could help to disentangle it from the towers of Kaluza–Klein states over W and Z gauge bosons in extra dimensions.

ＮＣ平面研削盤の運動精度に関する研究 静的精度と円運動精度

The authors previously developed the CBP method to precisely measure the circular motion errors of a high precision CNC grinding machine, and investigated the effects of the move-ment conditions and NC parameters on the error trajectory. In the present study, the static accuracy tests are performed to assess the characteristics in motion of the test machine. The obtained data, such as straight motion errors and squareness errors, change with the measured position where a. measurement device is fixed. Then, a new method for transforming the data obtained at the measured position to that at the end of the wheel spindle is proposed. The error trajectory under the circular motion is computed by using the obtained data and the proposed transforming method. The estimated results are similar to the measured error trajectories. This implies that the proposed method is properly used for the transformation of the error vector and the prediction of the motion errors.