Study of the Cutting Mechanism of Oil Tree Peony Stem
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 efficien...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/11/7/760 |
| _version_ | 1797562455519395840 |
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| author | Jiaming Liu Dong Zhao Jian Zhao |
| author_facet | Jiaming Liu Dong Zhao Jian Zhao |
| author_sort | Jiaming Liu |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T18:28:25Z |
| format | Article |
| id | doaj.art-363480e9467043c1aa4f8168ed1cdbe5 |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-10T18:28:25Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-363480e9467043c1aa4f8168ed1cdbe52023-11-20T06:47:22ZengMDPI AGForests1999-49072020-07-0111776010.3390/f11070760Study of the Cutting Mechanism of Oil Tree Peony StemJiaming Liu0Dong Zhao1Jian Zhao2School of Technology, Beijing Forestry University, Beijing 100083, ChinaSchool of Technology, Beijing Forestry University, Beijing 100083, ChinaSchool of Technology, Beijing Forestry University, Beijing 100083, ChinaTree 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.https://www.mdpi.com/1999-4907/11/7/760oil tree peonystem cuttingblade anglesliding-cutting anglecutting speed |
| spellingShingle | Jiaming Liu Dong Zhao Jian Zhao Study of the Cutting Mechanism of Oil Tree Peony Stem Forests oil tree peony stem cutting blade angle sliding-cutting angle cutting speed |
| title | Study of the Cutting Mechanism of Oil Tree Peony Stem |
| title_full | Study of the Cutting Mechanism of Oil Tree Peony Stem |
| title_fullStr | Study of the Cutting Mechanism of Oil Tree Peony Stem |
| title_full_unstemmed | Study of the Cutting Mechanism of Oil Tree Peony Stem |
| title_short | Study of the Cutting Mechanism of Oil Tree Peony Stem |
| title_sort | study of the cutting mechanism of oil tree peony stem |
| topic | oil tree peony stem cutting blade angle sliding-cutting angle cutting speed |
| url | https://www.mdpi.com/1999-4907/11/7/760 |
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