Experiment and Research on Cutting Mechanical Properties of Little Cabbage

Abstract

To reduce the cutting force and cutting power consumption during harvest, the cutting mechanical properties of the root of little cabbage were studied. The cutting experiment was carried out using a texture analyzer, and the influence of the individual factors, the cutting bevel angle, the sliding angle, and the cutting gap on the maximum cutting stress and specific cutting energy were studied, respectively. On the basis of single factor experiments, multi-factor experiments were carried out using the central composite design scheme of the response surface method (RSM), and finally, the cutting parameters were optimized. The single factor test results showed that the maximum cutting stress and specific cutting energy first decreased and then increased with the increase in the cutting bevel angle, decreased with the increase in the sliding angle, and first dropped and then went up with the increase in the cutting gap. Response surface test results showed that the order of significance of factors affecting the maximum cutting stress of the root were the oblique angle, sliding angle, and cutting gap in sequence, and the order of the significance of factors affecting the specific cutting energy are cutting gap, oblique angle, and sliding angle. The interaction between the sliding angle and the cutting gap had a significant impact on the maximum cutting stress, and the interaction between the oblique angle and the cutting gap had a significant impact on the cutting energy. The optimal parameter combination is as follows: oblique angle of 9.1°, sliding angle of 30°, and cutting gap of 1.3 mm. At this time, the predicted maximum cutting stress was 7.43 × 104 Pa, and the specific cutting energy was 0.28 mJ mm−2. Finally, a verification experiment was carried out, and the errors of the predicted and measured values of cutting under the optimal parameter combination were 6.9% and 10.8%, respectively, showing that the cutting parameter optimization results were reliable. This research can provide data support for the design and improvement in the cutting device of the little cabbage combine harvester.

Experimental Study on the Mechanical Behavior of Dry Corn Stalk Cutting

“…As provided in Table 7, the responses were obtained in the course of the cycle of studies (Sections 2 and 3) of cutting corn stalks harvested from the fields located in the Wielkopolska Province (west-central Poland); the value of the corn-stalk cutting force, F cc is primarily influenced by the blade angle, α, (Table 7) and this variable is the significant component of the model expressed in the form of Equation ( 4) in Section 3.1, as signified by the p-value of < 0.0001. Similarly, the studies of Wang et al [22] also demonstrated that the blade angle and its interaction with the distance between the blade and the counter blade (see Table 7) has the greatest influence on the process of energy consumption. Moreover, as provided in Figure 7, together with the increase in the linear velocity of the blade, V, we observe a decrease in the force value, F cc , for the entire range of values of the distance, g, and the blade angle, α.…”

“…A study of the cutting process of cabbage seedlings employing a counter-blade (supported cutting) was carried out by Wang et al [22]. The obtained results indicate that with the increase in the value of the blade rake angle, the cutting stresses and specific energy would initially decrease, and afterwards their values would increase.…”

On‐farm cropping sensor‐based smart device for cutting energy measurement of cereal crops

“…Several attempts have been made to enhance implement and increase the efficiency of crop harvesting equipment and its cutting tools (Bochat et al., 2021; Cui et al., 2021; Dixit et al., 2012; D. Du & Wang, 2016; El Didamony & El Shal, 2020; Glaus et al., 1972; Hosseinpour‐Zarnaq et al., 2022; Huang et al., 2020; Lesani et al., 2018; Lima et al., 2021; Navas et al., 2020; Patel et al., 2018; Pellenc & Pellenc, 2014; Popa & Popa, 2020; Schmid, 1965; Shearer et al., 1991; Song et al., 2022; Taghinezhadet al., 2012; Tang et al., 2021; Vu, Ngo, et al., 2020b; W. Wang et al., 2022; Xie, Jin, et al., 2022; Xie, Wang, et al., 2022). One of the key factors in crop harvesting is cutting force (Ma et al., 2014; Preethi et al., 2021; Zein El‐den et al., 2020).…”