Design and experimental study on pruning machine of Yunnan edible rose

Abstract The purpose of this research was to design a pruning machine of Yunnan edible rose in order to improve the operation conditions, increase efficiency and solve the problems of stem collection. Based on the experimental results of the physical and mechanical properties of rose stems, simulation experiment of three different cutting methods was conducted to determine the optimal scheme. The results showed that single disc cutter is best ways. In order to study effects of the different structure parameters on the performance of the pruning machine and get the optimal combination of parameters, the orthogonal test was conducted. Forward speed, rotational speed of cutter, number of blades, cutting angle and knife-edge angle as factors, and the quality of pruning was selected as the evaluation index. The experiment results indicated that the working performance of machine was the highest when the number of blades was 6, rotational speed of cutter was 2000 r/min, cutting angle was 20°, knife-edge angle was 10° ,forward speed was 0.5 m/s. The average quality of pruning index, miss cutting index and tearing index were 90.6%, 5.68% and 3.72%, respectively. The research provides a reference for the design and extending of the pruning machine for edible rose.