Next Article in Journal
Vitex agnus-castus L.: Main Features and Nutraceutical Perspectives
Previous Article in Journal
How Do Mediterranean Pine Trees Respond to Drought and Precipitation Events along an Elevation Gradient?
Article

Study of the Cutting Mechanism of Oil Tree Peony Stem

School of Technology, Beijing Forestry University, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Forests 2020, 11(7), 760; https://doi.org/10.3390/f11070760
Received: 25 June 2020 / Revised: 6 July 2020 / Accepted: 10 July 2020 / Published: 15 July 2020
(This article belongs to the Section Forest Ecology and Management)
Tree peony is a deciduous shrub endemic to China, and peony seed oil (PSO) is an important plant oil resource. However, at present, pruning and fruits harvesting of oil tree peony are mainly completed by manual work, which has seriously affected production efficiency. By the need to develop efficient pruning and harvesting equipment for oil tree peony, this study investigated the effect of cutting tool geometric parameters and cutting speed on cutting force and energy. A cutting device was set up, and six cutting tools with different blade angle and sliding-cutting angle were prepared for this research. Stems in different growth stages (anthesis and fructescence) were collected for cutting experiments. In this paper, four blade angles (25°, 30°, 35°, and 40°), three sliding-cutting angles (0°, 10°, and 20°), and four cutting speeds (25 mm/min, 50 mm/min, 100 mm/min, and 200 mm/min) were considered in the experiments. The results showed that cutting force and energy are positively related to blade angle, and the minimum cutting force and energy are required in cutting with 25° blade angle. Compared to straight cutting (sliding-cutting angle is 0°), sliding cutting can obviously reduce the cutting force and energy. Furthermore, the best sliding-cutting angles of cutting tools have discrepancies dependent on the stems in different growth stages. In fructescence, 10° sliding cutting required the lowest cutting force and energy. In contrast, the best sliding-cutting angle of stems in anthesis was 20°. On the other hand, the cutting force and energy were obviously proportional to the cutting speed, which increased by the cutting speed increasing. Therefore, under the condition of ensuring the cutting efficiency, reducing the cutting speed can effectively reduce the power consumption. These results are an important basis for pruning and harvesting machine development for oil tree peony. View Full-Text
Keywords: oil tree peony; stem cutting; blade angle; sliding-cutting angle; cutting speed oil tree peony; stem cutting; blade angle; sliding-cutting angle; cutting speed
Show Figures

Figure 1

MDPI and ACS Style

Liu, J.; Zhao, D.; Zhao, J. Study of the Cutting Mechanism of Oil Tree Peony Stem. Forests 2020, 11, 760. https://doi.org/10.3390/f11070760

AMA Style

Liu J, Zhao D, Zhao J. Study of the Cutting Mechanism of Oil Tree Peony Stem. Forests. 2020; 11(7):760. https://doi.org/10.3390/f11070760

Chicago/Turabian Style

Liu, Jiaming; Zhao, Dong; Zhao, Jian. 2020. "Study of the Cutting Mechanism of Oil Tree Peony Stem" Forests 11, no. 7: 760. https://doi.org/10.3390/f11070760

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop