CN102349392B - Method for designing bionic toothed disc cutting component - Google Patents
Method for designing bionic toothed disc cutting component Download PDFInfo
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- CN102349392B CN102349392B CN 201110257041 CN201110257041A CN102349392B CN 102349392 B CN102349392 B CN 102349392B CN 201110257041 CN201110257041 CN 201110257041 CN 201110257041 A CN201110257041 A CN 201110257041A CN 102349392 B CN102349392 B CN 102349392B
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Abstract
The invention relates to a method for upgrading a cutting component on an agricultural cultivating machine, in particular to a method for designing a bionic toothed disc cutting component. The method aims to solve the problems that the conventional disc cutter is stuck by soil and has high resistance and the like. Basic parameters are acquired from the research of biological structural form characteristics in the peripheral outline design of an outer edge tooth crest surface of the disc cutting component, and a parabola is adopted, wherein the outer edge tooth soil-facing side outline is in an upper convex parabola shape: y2=2Px from the root to the top, the x axis is in the tangent direction of a root circle, the y axis is in the normal direction of the root circle, and the soil backing side, namely the toothed back outline is totally symmetrical with the soil-facing side. A hydrophobic material is covered on the surface in a certain range of the center of the disc, the diameter ds of the surface circle of the hydrophobic layer is D-2*H, the thickness of the hydrophobic layer is 0.5 millimeter, and the disc cutting component has the characteristics of reducing the cutting resistance and no sticking soil. By the method, the operation energy consumption can be obviously saved, and the operation efficiency is improved.
Description
Technical field:
The present invention relates to the agricultural machinery cutting part, particularly relate to crops straw and root stubble cutting part, belong to agricultural mechanical field.
Background technology:
The cutting of crops (as corn, wheat and paddy rice etc.) stalk is an important procedure of these crop harvestings, and the root stubble of crop can be used as the agricultural biomass energy and material and gathers in the crops and be used.The disk cutting part, as the vitals of stalk and root stubble results, no-tillage seeding trench digging, affords resistance and wearing and tearing from stalk, root stubble and soil in the course of work; Therefore, for guaranteeing its stable duty, rational service life and performance driving economy thereof, need the cutting part that wearability is high, cutting performance is good, energy consumption is low, efficiency is high.The excavator official that cuts of soil burrowing animal has good digging structure and the function of cutting, and as the dentalation that smelly dung beetle front foot tibia outer rim has, can be cut and dig sticky wet machined object; Mole is called as " excavator " alive, and its pawl is main cutout organ, is on the whole dentalation; Mole cricket is called as " cutworm ", also has very strong cutout ability, and its front foot is the cutout foot, also is on the whole dentalation.Four foots of house mouse and citellus dauricus all have very strong cutout ability, and its toes have specific bending features.The energy efficiency structural design that the structure of the cutout organ of above-mentioned soil burrowing animal is the disk cutting part provides the bionics foundation.
Summary of the invention:
The object of the invention is to overcome the above-mentioned shortcoming that prior art exists, propose a kind of method for designing of bionic toothed disc cutting component, adopt the disk cutting part of audit to save more significantly operation consumption, improve its operating efficiency.
Imitate smelly dung beetle front foot tibia outer rim dentation geometry, mole cricket front foot dentalation, mole front foot dentalation, the bionical dentalation of design disk cutting part outer rim, comprise the angle between addendum line profile, flank line profile and flank line and root circle; Imitate the architectural feature of house mouse cutout toes, citellus dauricus cutout toes and smelly dung beetle front foot tibia outer rim tooth top envelope, the cross-sectional configuration of design disk cutting part cutting teeth.
A kind of method for designing of bionical dentalation disk cutting part, it is characterized in that, the circumferential profile design of disk cutting part marginal tooth end face obtains basic parameter from the research of organism structure morphological feature, adopt parabola, wherein marginal tooth is met native facial contour and is adopted convex-shaped parabolic shape: y by root to end face
2=2Px, the x axle is the root circle tangential direction, and the y axle is along the root circle normal direction, and P is the burnt accurate distance of parabola, and to carry on the back native face be profile of tooth back outline line with meet native face full symmetric;
According to tilling depth and the requirement of disk external diameter, tooth depth H is decided to be 15mm, the ratio W/H=2 of facewidth W and tooth depth H～2.5, and facewidth W is the root circle pitch, tooth depth H is the poor of outside circle and root radius;
By cutting teeth the ratio of width to height, can regulate the P value is that 6<P<7.5 and the facewidth design the number of teeth, because the tooth root arc length of each cutting teeth is slightly larger than facewidth W, get approximative value, number N of teeth<π (D-30)/W, by W=2H～2.5H, the N span is π (D-30)/2.5～2H, increase with the disk D outer diameter, by the number of teeth, round principle, determine W value accurately;
Thick S >=the 4mm of tooth root, the thick b=1mm of sword, basil i=30 °;
Surface coverage hydrophobic material in the disc centre certain limit, hydrophobic layer surface circular diameter ds=D-2 * H, thickness Sa=0.5mm.
The outermost end points of the whole teeth of disk outer rim on same circle, i.e. outside circle.
Described cutting teeth is along disk external diameter continuous distribution.
Except cutting teeth, disk buries, and part covers ultra-high molecular weight polyethylene, polytetrafluoroethylene (PTFE) or other has hydrophobic function, with the contact angle of water, is greater than 90 degree, and has the material of the better Abrasive Wear Characteristics of anti-soil.
Disk outer rim dentalation adopts the tooth of single face sword structure, a=30 °～45 ° of disk plane and direction of advance drift angles, vertical guide angle β=15 °～30 °, it is parabola shaped to end face employing epirelief by root that wherein marginal tooth is met native facial contour, and carry on the back native facial contour and its full symmetric.
The accompanying drawing explanation:
By reference to the accompanying drawings bionical dentalation disk cutting part of the present invention is described as follows.
The bionical dentation disk of Fig. 1 (a) cutting tool operation schematic diagram.
Fig. 1 (b) is the side cutaway view of Fig. 1 (a).
The local enlarged side view of Fig. 1 (c) cutting teeth.
Fig. 1 (d) cutting teeth shape schematic diagram.
The bionical dentalation cutting disc of Fig. 2 operation graphics.
The large footpath D=900mm of Fig. 3 (a) disk, the bionical dentate gyrus dise knife surface size figure of number N of teeth=81.
Fig. 3 (b) is the side cutaway view of Fig. 3 (a).
The local enlarged side view of Fig. 3 (c) cutting teeth.
The large footpath D=300mm of Fig. 4 (a) disk, the bionical dentate gyrus dise knife surface size figure of number N of teeth=27.
Fig. 4 (b) is the side cutaway view of Fig. 4 (a).
The local enlarged side view of Fig. 4 (c) cutting teeth.
The large footpath D=600mm of Fig. 5 (a) disk, the bionical dentate gyrus dise knife surface size figure of number N of teeth=51.
Fig. 5 (b) is the side cutaway view of Fig. 5 (a).
The local enlarged side view of Fig. 5 (c) cutting teeth.
In figure: the thick Sa. hydrophobic layer of S. cutter direction of advance B. cutter direction of rotation i. basil b. sword thickness
H. tooth depth W. facewidth S. disc centre thickness D. tip diameter ds. hydrophobic layer diameter Db. installing hole diameter
1. carry on the back native face 2. and meet native face 3. cutting teeth 4. outside circle 5. root circle 6. hydrophobic layer 7. installing holes
Specific embodiments:
Further illustrate particular content of the present invention below in conjunction with the accompanying drawing illustrated embodiment:
The circumferential profile design of disk cutting part marginal tooth end face obtains basic parameter from the research of organism structure morphological feature, adopts parabola or circular arc linear, mimic biology is cut the interactively in the process of digging, and the disk cutting part adopts the positive movement consistent with the unit direction of advance, and the angle of disk plane of rotation and facility direction of advance is that the general value of disk diflection angle α is between 23 ° and 32 °, with reference to accompanying drawing 2, the outer rim dentalation is the tooth of oblique structure of retreating, and wherein to meet native facial contour be one section convex-shaped parabola (Fig. 1 c): y by root to end face to marginal tooth
2=2Px, P is burnt accurate distance, the x axle is the root circle tangential direction, the y axle is along the root circle normal direction, and carry on the back native face (profile of tooth back) outline line and meet native face full symmetric, according to tilling depth and the requirement of disk external diameter, tooth depth H is decided to be 15mm, the ratio W/H=2 of facewidth W (root circle pitch) and tooth depth H (outside circle and root radius poor)～2.5, by cutting teeth the ratio of width to height, can suitably regulate P value (its span is 6<P<7.5) and the facewidth and design the number of teeth, because the tooth root arc length of each cutting teeth is slightly larger than facewidth W, get approximative value, number N of teeth<π (D-30)/W, by W=2H～2.5H, the N span is (π (D-30)/2.5H, π (D-30)/2H), N increases with the disk D outer diameter, and round the definite W value accurately of principle by the number of teeth.Disc centre thickness S is not less than 4mm, the thick b=1mm of sword, basil i=30 °; Surface coverage hydrophobic material in the disc centre certain limit, hydrophobic layer surface circular diameter d
s=D-2*H, thickness 0.5mm.
Example 1 is consulted accompanying drawing 3
Accompanying drawing 3 is bionical dentate gyrus dise knife, and structure is with reference to traditional disk plow basic parameter, D=900mm, installing hole diameter d a=71mm, disc thickness 10mm, and imitate the soil burrowing animal and dig the foot position, the cutting teeth structure of design disk outer rim, cutting teeth addendum line and dedendum line are circle; Cutting teeth is along the even continuous distribution of disk outer rim, and the number N of teeth span is (91.06,72.848), gets median N=81, and the ratio of facewidth W and tooth depth H is that 2.2, P value is 6.8.Disc centre thickness 10mm, the thick b=1mm of sword, basil i=30 °; Disk hydrophobic layer diameter d s=870mm, thickness of two sides is 0.5mm.
Example 2 is consulted accompanying drawing 4
Accompanying drawing 4 is bionical dentate gyrus dise knife, and structure is with reference to traditional disk plow basic parameter, D=300mm, and installing hole diameter d a=31mm, and imitate the soil burrowing animal and dig the foot position, the cutting teeth structure of design disk outer rim, cutting teeth addendum line and dedendum line are circle; Cutting teeth is along the even continuous distribution of disk outer rim, and the number N of teeth span is (22.608,28.26), gets N=27, and the ratio of facewidth W and tooth depth H is that 2, P value is 7.5.Disc centre thickness 4mm, the thick b=1mm of sword, basil i=30 °; Disk hydrophobic layer diameter d s=270mm, thickness of two sides is 0.5mm.
Example 3 is consulted accompanying drawing 5
Accompanying drawing 5 is bionical dentate gyrus dise knife, and structure is with reference to traditional disk plow basic parameter, D=600mm, and installing hole diameter d a=61mm, and imitate the soil burrowing animal and dig the foot position, cutting teeth addendum line and dedendum line are circle; Cutting teeth is along the even continuous distribution of disk outer rim, and the number N of teeth span is (47.728,59.66), gets N=51, and the ratio of facewidth W and tooth depth H is that 2.3, P value is 6.4.Disc centre thickness 5mm, the thick b=1mm of sword, basil i=30 °; Disk hydrophobic layer diameter d s=570mm, thickness of two sides is 0.5mm.
Claims (5)
1. the method for designing of a bionical dentalation disk cutting part, it is characterized in that, the circumferential profile design of disk cutting part marginal tooth end face obtains basic parameter from the research of organism structure morphological feature, adopt parabola, wherein marginal tooth is met native facial contour and is adopted convex-shaped parabolic shape: y by root to end face
2=2Px, the x axle is the root circle tangential direction, and the y axle is along the root circle normal direction, and P is the burnt accurate distance of parabola, and to carry on the back native face be profile of tooth back outline line with meet native face full symmetric;
According to tilling depth and the requirement of disk external diameter, tooth depth H is decided to be 15mm, the ratio W/H=2 of facewidth W and tooth depth H～2.5, and facewidth W is the root circle pitch, tooth depth H is the poor of outside circle and root radius;
By cutting teeth the ratio of width to height, can regulate the P value is that 6<P<7.5 and the facewidth design the number of teeth, because the tooth root arc length of each cutting teeth is slightly larger than facewidth W, by the approximate facewidth that is taken as of root circle isolated value, number N of teeth<π (D-30)/W, by W=2H～2.5H, the N span is π (D-30)/2.5～2H, increase with the disk D outer diameter, by the number of teeth, round principle, determine W value accurately;
Thick S >=the 4mm of tooth root, the thick b=1mm of sword, basil i=30 °;
Surface coverage hydrophobic material in the disc centre certain limit, hydrophobic layer surface circular diameter ds=D-2 * H, thickness Sa=0.5mm.
2. the method for designing of a kind of bionical dentalation disk cutting part according to claim 1, is characterized in that, the outermost end points of the whole teeth of disk outer rim on same circle, i.e. outside circle.
3. according to the method for designing of the described a kind of bionical dentalation disk cutting part of claim 1 or 2, it is characterized in that, described cutting teeth is along disk external diameter continuous distribution.
4. the method for designing of a kind of bionical dentalation disk cutting part according to claim 1, it is characterized in that, except cutting teeth, disk buries, and part covers ultra-high molecular weight polyethylene, polytetrafluoroethylene (PTFE) or other has hydrophobic function, be greater than 90 degree with the contact angle of water, and there is the material of the better Abrasive Wear Characteristics of anti-soil.
5. the method for designing of a kind of bionical dentalation disk cutting part according to claim 1, it is characterized in that, disk outer rim dentalation adopts the tooth of single face sword structure, a=30 °～45 ° of disk plane and direction of advance drift angles, vertical guide angle β=15 °～30 °, it is parabola shaped to end face employing epirelief by root that wherein marginal tooth is met native facial contour, and carry on the back native facial contour and its full symmetric.
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| CN 201110257041 CN102349392B (en) | 2011-09-02 | 2011-09-02 | Method for designing bionic toothed disc cutting component |
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| CN103069971B (en) * | 2013-01-22 | 2015-07-01 | 吉林大学 | Saw-blade saw bit with bionic sawteeth for cutting maize straws |
| CN103133653A (en) * | 2013-03-13 | 2013-06-05 | 苏州优金金属成型科技有限公司 | High transmission efficiency gear |
| CN103733802A (en) * | 2013-12-23 | 2014-04-23 | 张明芝 | Saw blade special for mowing machine |
| CN105165187B (en) * | 2015-10-21 | 2017-04-12 | 吉林大学 | Bionic curved-surface circular disc fertilization furrow opener |
| CN107864701A (en) * | 2017-09-26 | 2018-04-03 | 昆明理工大学 | It is a kind of to cut native cutting edge there is the manual hoe of bionical function broached-tooth design |
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| JP2005046004A (en) * | 2003-06-02 | 2005-02-24 | Shinko Engineering Co Ltd | Apparatus for digging out vegetable residue and rotary tine for digging out used therein |
| CN100569062C (en) * | 2006-12-06 | 2009-12-16 | 吉林大学 | Bionic rotary-cutting and stubble-breaking blade |
| CN101258793B (en) * | 2008-04-24 | 2011-12-28 | 吉林大学 | Bionic drag reduction stubbling knife and design method thereof |
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