Effects of blade sliding cutting angle and stem level on cutting energy of rice stems

Zhang, Chunyu; Chen, Liqing; Xia, Junfang; Zhang, Jumin

doi:10.25165/j.ijabe.20191206.4604

Cited by 16 publications

(16 citation statements)

References 14 publications

(19 reference statements)

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“…The phenomenon can be explained from the following two aspects: (1) Because the larger the sliding cutting angle, the smaller the actual wedge angle of the cutting edge cutting into the stem, and the smaller the normal resistance of the cutter cutting into the material; and (2) The greater the slippage of the cutter along the tangential direction, the stronger the cutting action of the cutter on the stem fibers, so the required cutting stress and cutting energy consumption are smaller. The results are supported by the previously mentioned theory of sliding cutting research and the derivation of Equation ( 4) [11]. When the cutting gap was less than 1 mm, the proportional value of the root shear area was greater than the fracture area, showing a pure shear state, and the cutting resistance value was larger at this time (Figure 5c).…”

Section: Discussionsupporting

confidence: 85%

“…When the absolute movement direction of the cutter is at a certain angle to the cutting edge, the cutting method is sliding cutting. The sliding angle is the angle between the absolute speed direction and the normal speed direction of the cutter movement, and can be adjusted by changing the relative position of the fastening bolts between the moving cutter and the fixed plate [11,21]. The cutting gap refers to the distance between the movable cutter and the fixed cutter, and is also considered as one of the experimental factors.…”

Section: Influencing Factors Of Experimentsmentioning

confidence: 99%

“…Gan et al [10] compared power consumption in harvesting Miscanthus using a right angle cutter and bevel cutter and found that the design of the cutter had a significant impact on the energy consumption and field performance of biomass harvesting equipment. Zhang et al [11] used the cutting device of a texture analyzer to study the effect of the slide cutting angle on the cutting energy of a single rice stem. The results showed that optimizing the sliding cutting angle had a significant effect on savings in cutting energy.…”

Section: Introductionmentioning

confidence: 99%

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Experiment and Research on Cutting Mechanical Properties of Little Cabbage

Wang

Zhang

et al. 2022

Applied Sciences

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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.

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Section: Discussionsupporting

confidence: 85%

Section: Influencing Factors Of Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experiment and Research on Cutting Mechanical Properties of Little Cabbage

Wang

Zhang

et al. 2022

Applied Sciences

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“…The measurement and control system consists of a laptop computer, the foot-standing sensor NA4, the attitude Euler angle sensor HWT905, the MCC-1608G multifunctional data acquisition card, the transmitter and 24 V DC power supply. Referring to the previous research on stubble cutters and related slip-cutting theory [34,35], the cutting tool for branches is designed with the structural parameters shown in Figure 3. The moving knife and the fixed knife support seat are provided with a central hole and an arc-shaped sliding groove, respectively, and the blade turns the cutting tool with the central hole as the pivot point.…”

Section: Overall Structure Of Cutting Test Benchmentioning

confidence: 99%

“…After the cutting test was completed, the cut sections of the sheared branches were coated with petroleum jelly and sealed with plastic wrap for preservation and labeling. The branch specimens were weighed and measured again after drying at 103 ± 2 • C for 8 h; after that, they were measured every 2 h, and the drying was considered to be completed before and after not more than 0.002 g [20,35]. The moisture content of the branches was determined to be 25.6% to 29.7% during the test period.…”

Section: Data Acquisitionmentioning

confidence: 99%

Analysis and Experiment of Cutting Mechanical Parameters for Caragana korshinskii (C.k.) Branches

Gao

Kang

Kan

et al. 2021

Forests

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In order to investigate the cutting mechanical characteristics of Caragana Korshinskii (C.K.) branches and explore the optimal combination of cutting parameters to support the subsequent equipment development, this paper explores the relationship between branch diameter D, average cutting speed v, wedge angle β, slip cutting angle α, cutting height h, cutting gap t, moisture content M and peak cutting force by using a homemade swing-cut branch cutting test bench with peak cutting force of branches as the target value under unsupported and supported cutting methods, respectively, through single-factor tests. Based on the single-factor test, v, β, α and t were selected as the test factors, and a multi-factor test was conducted with the peak cutting force as the target. Test result: The best combination of unsupported cutting in the range of multi-factor test is v for 3.315 m·s−1, β for 20°, α for 20°, when the peak cutting force is 95.690 N. Supported cutting multi-factor test range to get the best combination of v for 3.36 m·s−1, β for 20°, α for 20°, t for 1.38 mm, when the peak cutting force is 53.082 N. The errors of the predicted peak cutting force and the measured peak cutting force of the obtained model were 1.3% and 3.9%, respectively, which prove that the cutting parameters were optimized reliably. This research can provide a theoretical basis for subsequent development the C.K. harvesting equipment.

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

et al. 2023

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A device was developed for on‐field cutting energy measurement of cereal crops. Physical, engineering, and anatomical properties of prominent rice (Oryza sativa L.) cultivars of India were studied at different stem positions using a factorial CRD design. The effects of changes in different operational parameters, including blade bevel angle (15°, 20°, and 25°), cutting angle (25°, 30°, and 35°) and cutting velocity (2.9, 3.44, and 4.1 m s−1) on cutting force and cutting energy of rice stalk were also studied. Cutting angle indicated the angle of inclination of cutting edge to the horizontal at blade‐crop interface. The assessment of these properties and parameters in relation to crop cutting energy, led to the development of a smart device for energy measurement up to a size of three skills. This device consisted of a compression system, crop holding unit, cutting unit, and sensors to measure the force, speed, and cutting height. The device's measurement abilities were evaluated with wheat (Triticum aestivum L.) stalks at different cutting speeds (0.83, 1.16, and 1.5 m s−1 and stem heights (10, 20, and 30 cm from ground). Values for cutting force and energy ranged from 1.85 to 1.45 N and 10.81 to 8.48 N mm–1, respectively. At all stem heights, the cutting force and cutting energy ranged from 1.79 to 1.44 N and 11.92 to 6.74 N mm–1, respectively. The ultrasonic sensor provided real time cutting height data with an accuracy of 97.5%, while the gyroscope sensor had an accuracy of 94.29% for on‐field cutting angle measurement.

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Effects of blade sliding cutting angle and stem level on cutting energy of rice stems

Cited by 16 publications

References 14 publications

Experiment and Research on Cutting Mechanical Properties of Little Cabbage

Experiment and Research on Cutting Mechanical Properties of Little Cabbage

Analysis and Experiment of Cutting Mechanical Parameters for Caragana korshinskii (C.k.) Branches

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

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