Bionic drag reduction stubbling knife and design method thereof

A design method and stubble cutting knife technology, which can be applied to tillage machines, crop processors, cutters, etc., can solve the problems of high cutting resistance and high energy consumption, and achieve the effects of reducing traction resistance, improving efficiency, and reducing production costs

Inactive Publication Date: 2008-09-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of large cutting resistance and high energy consumption of the existing rotary tillage and stubble

Method used

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  • Bionic drag reduction stubbling knife and design method thereof
  • Bionic drag reduction stubbling knife and design method thereof
  • Bionic drag reduction stubbling knife and design method thereof

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] 1. Use a stereo microscope to take pictures of the excavated and cut claws of mole crickets, and extract the surface features. It can be observed that the claws and toes have serrations.

[0025] 2. Fit the data of the sawtooth on the claw toe to get the sawtooth curve of the claw toe.

[0026] The curve equation is: 0.0185x 4 -0.5897x 3 +5.1837x 2 -6.7286x+5.9365

[0027] 3. The serrated teeth are processed on the main edge of the commonly used L-shaped stubble cutter, the tooth pitch t=6mm, the tooth height h=4mm, that is, h / t=2 / 3, the tooth throat angle γ=0°, the tooth tip angle β= 50°, then the back angle α=40°. The two sides of the sawtooth are fitted with the above curves, and the R1 arc transition at the tooth root part, refer to the enlarged picture of the sawtooth image 3 shown.

[0028] 4. Use the processing method of wire spark cutting to process, add the above-mentioned graphic programming into the computer console, and then process and obtain a new t...

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Abstract

The invention pertains to agricultural and terrain machinery field, in particular to a bionic drag-reducing stubble-cleaning cutter and a design method thereof, which aims at reducing energy consumption and the cutting resistance of a cutter. The specific technical proposal of the bionic drag-reducing stubble-cleaning knife is that: the edge of the cutter is processed with sawteeth, the geometrical shape of which is that: the teeth space t is 4 to 8 mm, the ratio between the tooth height h and the teeth space t is between 0.6 and 0.8, the tooth angle beta is 40 degrees to 55 degrees, the tooth throat angle gamma is 0 degree to -22.5 degrees, and the tooth angle beta plus the rear angle alpha plus tooth throat angle gamma equals to 90 degrees. The design method of the bionic drag-reducing stubble-cleaning cutter is that: (1) the surface characteristics of the claws of mole cricke excavating and cutting are extracted, (2) data fitting is made to the sawteeth on the claws to get a dentate curve of the claws: ax <4> + bx <3>+cx <2>+ d x+e, (3) the sawteeth are processed on the commonly used stubble-cleaning edges by using a processing way of wire cutting, the outlines of the two sides of the sawteeth are in the form of the curve which is guaranteed to be a convex curve, thereby a novel bionic stubble-cleaning cutter is prepared.

Description

technical field [0001] The invention belongs to the field of agriculture and ground machinery, and specifically relates to a study on the biological surface morphological characteristics of mole cricket digging and cutting claws according to the bionic theory, which is applied to the cutting edge of the stubble knife, that is, the imitation mole cricket digging and cutting claw is processed on the main cutting edge of the stubble knife Bionic drag reduction and stubble cutting knife with toe geometry and its design method. Background technique [0002] Conservation tillage is an important method to achieve sustainable agricultural development. Rotary tillage stubble removal is one of the important agronomic links. The energy consumption and work quality of rotary tillage stubble removal are directly related to the shape of the stubble removal knife. Although the original stubble removal knife meets the agronomic requirements , but the cutting resistance is relatively large, ...

Claims

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Application Information

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IPC IPC(8): A01B33/10A01D82/02
Inventor 李建桥文立阁李因武张锐张春华马文哲邹猛陈斌
Owner JILIN UNIV
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