Programming Command in Computer Numerical Control (CNC) Machining Task Instructions for Woodwork Technology Training

Abstract

The main purpose of the study was to developed programming command in Computer Numerical Control(CNC) machining task instructions for woodwork technology training in South-South, Nigeria. To guide the study three objectives, three research questions were formulated to guide the study. The study adopted Research and Development Design (RandD). The population was 66 respondents, comprising of 27 woodwork technology/wood product Engineering lecturers, 15 woodwork technology/wood product Engineering technologies, 12 NDE supervisors, and 12 woodwork technology/wood product Engineering technicians. The sample size for the study was 56, (86.2%) of the population. One instrument was used for this study was 57 researcher-developed instrument titled: Programming Command in Machining Task Instructions in CNC for Woodwork Technology Training Questionnaire was used for data collection for the study. Five-point Likert scale with response options scored thus: Highly Appropriate (HA), Moderately Appropriate (MA), Appropriate(A), Lowly Appropriate (LA), Not Appropriate (NA), with assigned values of 5,4,3,2, and 1 respectively. The instrument was validated by seven experts for face-validation, content- validation and dacum- validation. Cronbach’s Alpha statistical tool was used to calculate the internal consistency of the instrument which was established at 0.88. the Mean and Standard Deviation was used to answer the research questions, while factorial analysis was used to determine the experts rating and Pearson Product Moment Correlation (PPMC) was used to test for the Inter-Rater Reliability of the instructions. The study revealed that out of 57 task instructional items 3 were discarded and 54 were found appropriate for inclusion in the CNC task instructions. The content validity ratio was high there the instructions was appropriate for use on trainees. In conclusion all Woodwork Lecturers, Technologies, Supervisors, and Technicians agreed that the identified Tasks and Subtasks. In addition, the developed machining task instructions had a high reliability coefficient, hence it was deemed fit for use for the training.