CN203942789U - Bionical farm machinery knife section - Google Patents
Bionical farm machinery knife section Download PDFInfo
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- CN203942789U CN203942789U CN201420373117.XU CN201420373117U CN203942789U CN 203942789 U CN203942789 U CN 203942789U CN 201420373117 U CN201420373117 U CN 201420373117U CN 203942789 U CN203942789 U CN 203942789U
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- bionical
- knife section
- farm machinery
- tooth
- machinery knife
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Abstract
The utility model discloses bionical farm machinery knife section, be intended to overcome prior art and exist blade tooth-shape structure parameter not rationally to cause the problem of blade shortening in service life.Described bionical farm machinery knife section is comprised of mounting portion and working portion: the plate structure parts that 2 installation through holes are set that mounting portion is rectangle; Working portion is the plate structure part of isosceles-trapezium-shaped; Its long base equates with the long limit of mounting portion and is connected to be symmetrically plate armature part.2 waist limits of working portion are 2 cutting edges (4) of bionical farm machinery knife section, on the inboard sword face of 2 cutting edges (4), be processed with the blade tooth being parallel to each other, the plane of symmetry of each blade tooth is parallel with the long base of the working portion of isosceles-trapezium-shaped.The width that is processed with 2 metal levels from 2 cutting edges (4) toward inboard on the bottom surface of bionical farm machinery knife section is that 10～15 millimeters of thickness with metal level are the spraying area of 0.2～0.3 millimeter.
Description
Technical field
The utility model relates to a kind of for the blade on farm machinery, and or rather, the utility model relates to a kind of bionical farm machinery knife section.
Background technology
Domestic farm machinery knife section original product is designed to be convenient to machining profile of tooth, profile of tooth cross section pointed tooth triangular in shape, tooth-shape structure parameter is reasonable not, affects intensity and the wear resistance of blade, often there is the failure modes such as broken teeth point, chipping, broken teeth root, crackle, cause shorten service life.In addition, owing to adopting the method for traditional machining to manufacture product, blade profile of tooth is not whole, and metallic fiber structure is cut off, and more makes the various hydraulic performance declines of blade product, and shorten service life.
Summary of the invention
Technical problem to be solved in the utility model is to have overcome prior art to exist blade tooth-shape structure parameter not rationally, often to occur broken teeth point, chipping, broken teeth root, crackle and the problem that causes blade to shorten service life, and a kind of bionical farm machinery knife section and manufacture method thereof are provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: described bionical farm machinery knife section is plank frame part, mounting portion and working portion, consists of.
Described mounting portion is the plate structure part of rectangle, and 2 installation through holes that structure is identical are set on it symmetrically, and the line of centres of installation through hole that 2 structures are identical and the long limit of the mounting portion of rectangle are parallel.
Described working portion is the plate structure part of isosceles-trapezium-shaped, or more precisely, the plate structure part that working portion is inverted isosceles-trapezium-shaped; The long base of the working portion of isosceles-trapezium-shaped equates and is connected with the long limit of the mounting portion of rectangle to be symmetrically plate armature part.
2 waist limits of the working portion of isosceles-trapezium-shaped are 2 cutting edges that structure is identical of bionical farm machinery knife section, the blade tooth being parallel to each other being processed with on the sword face of the identical cutting edge inboard of 2 structures, form left groove face, right groove face, left groove face is identical with right groove face structure, and left groove face is parallel with the long base of the plane of symmetry of each blade tooth in right groove face and the working portion of isosceles-trapezium-shaped.
On the bottom surface of bionical farm machinery knife section, from 2 identical cutting edges of structure, toward inboard, process 2 spraying areas.
Between sword face described in technical scheme and the bottom surface of bionical farm machinery knife section, angle is sword face angle λ, and sword face angle λ is set to 20～23 °, i.e. λ=20～23 °.
The tooth surface shape of the blade tooth described in technical scheme is three-dimensional bionic curved surface by plane optimizing, and the shape of cross section of blade tooth is three-dimensional bionic circular arc pointed shape by Triangles Optimization, and the radius R of bionical circular arc is 6～7 millimeters, i.e. R=6～7 millimeter; Tooth angle is optimized to design, i.e. β=50～55 °; Space width is set to 1.8～2mm, i.e. t=1.8～2mm, and groove angle is 0～5 °, i.e. δ=0～5 °.
Referring to toward 2 spraying areas of inboard processing from 2 identical cutting edges of structure on the bottom surface of bionical farm machinery knife section described in technical scheme: spraying area width H is 10～15 millimeters, and the thickness of the metal level that spraying area sprays is 0.2～0.3 millimeter.
Compared with prior art the beneficial effects of the utility model are:
1. bionical farm machinery knife section described in the utility model and manufacture method thereof are mainly reflected in the raising of profile of tooth working portion intensity, and antiwear property improves, and increase service life.Reason be tooth-shape structure after bionic optimization, by triangle sharp-tooth shaped, change three-dimensional cambered surface tooth type into, structural strength improves, and produces the effect of the rate of depreciation of controlling wedge surface or seamed edge, flank of tooth antiwear property improves, and is conducive to cold volume precision form.
2. bionical farm machinery knife section described in the utility model and manufacture method thereof are owing to adopting cold volume precise forming process machining 3 D cambered surface tooth type, it is complete fine and closely woven that parts of tooth metallic fiber keeps, be not cut off, product profile of tooth duration of work collapses tooth phenomenon and greatly reduces.The groove angle of blade, sword face angle are optimized adjustment, contribute to the extension of teeth groove and the self-sharpening of groove blade, cut sharply, and cutting efficiency improves, and reduces complete machine energy resource consumption.
3. bionical farm machinery knife section described in the utility model and manufacture method blade edge of a knife district thereof adopt plasma spraying technology to prepare high rigidity, high abrasion coating, improve its abrasion resistance properties, unsuitable tipping, and cutting edge is sharp, improves cutting efficiency;
4. the blade base material in bionical farm machinery knife section described in the utility model and manufacture method thereof can be selected the Fine Steel Casting iron material of plasticity, good toughness, the cold volume of being convenient to profile of tooth is compressing, improve the die life of cold bulk forming, reduce material cost and production cost;
5, bionical farm machinery knife section described in the utility model and manufacture method thereof adopt fine-edge blanking technology to make blanking, the one step completed combination process of punching, and assembling and positioning dimensional accuracy improves, and fracture surface roughness reduces;
6. adopt plasma spraying technology at blade bottom surface spraying one deck high rigidity, high abrasion metal level, width is 10 to 15 millimeters, and thickness is 0.2 to 0.3 millimeter, protection cutting edge.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the front view that the structure of bionical farm machinery knife section described in the utility model forms;
Fig. 2 is the local amplification profile of A-A place sword face angle λ in Fig. 1;
Fig. 3 is I place partial enlarged view in Fig. 1;
Fig. 4 is C-C place partial enlarged view in Fig. 3;
In figure: 1. installing hole, 2. spraying area, 3. right groove face, 4. cutting edge, 5. sword face angle, 6. groove angle, 7. tooth angle, 8. bionical circular arc, 9. space width.
Embodiment
Below in conjunction with accompanying drawing, the utility model is explained in detail:
For solving prior art, exist blade tooth-shape structure parameter not rationally to cause the problem of blade shortening in service life, the utility model application machine bionics is optimized Bionic Design to product profile of tooth, the flank of tooth is three dimension arch curved surface, not only improved profile of tooth intensity, abrasion resistance, and be convenient to implement the cold volume precise forming process of profile of tooth, improved production efficiency and product quality.
Bionical farm machinery knife section (referred to as bionical knife section) be take clover (trefoil) as bionical object, utilize SEM to observe clover, obtain clover leaf edge sawtooth shape, utilize reverse-engineering principle to use special-purpose 3D sculpting software to extract curved surface features model, generate physical model, according to the notional result of finite element analysis, and the actual blade processing of 3D model carries out the result of wear test, carries out the optimization of profile of tooth and selects.
Bionical farm machinery knife section product adopts mechanical Bionic Optimum Design, and traditional knife section profile of tooth and groove angle, sword face angle are adjusted, and makes product structure science, reasonable, practical more, General Promotion properties of product and quality.
Consult Fig. 1, described bionical farm machinery knife section is plank frame part, by mounting portion, is connected with working portion; Described mounting portion is the plate structure part of rectangle, and 2 installation through holes that structure is identical are set on it symmetrically, and the line of centres of installation through hole that 2 structures are identical and the long limit of the mounting portion of rectangle are parallel.Described working portion is the plate structure part of isosceles triangle shape, or more precisely, the plate structure part that working portion is inverted isosceles-trapezium-shaped; The long base of the working portion of isosceles-trapezium-shaped equates and is connected with the long limit of the mounting portion of rectangle to be symmetrically plate armature part.
2 waist limits of the working portion of isosceles-trapezium-shaped are the identical cutting edge 4 of 2 structures of bionical farm machinery knife section, the blade tooth being parallel to each other being processed with at sword face since 2 identical cutting edges 4 (toward inboard) of structure, form left groove face, right groove face 3, left groove face is identical with right groove face 3 structures, and left groove face is parallel with the long base of the plane of symmetry of each blade tooth in right groove face 3 and the working portion of isosceles-trapezium-shaped.
For improving serviceability, processing characteristics, the service life of blade:
The utility model has adopted mechanical bionics blade profile of tooth to carry out bionic optimization, profile of tooth is optimized for the three dimension arch flank of tooth, and groove angle, tooth angle, sword face angle are optimized to adjustment, improve it from sharpening effect and antiwear property, cut sharply, and be conducive to the cold volume precision form of profile of tooth.
Adopt the cold volume precise forming process processing of plate profile of tooth, made parts of tooth metallic fiber complete, fine and closely woven, be not cut off, greatly improved the intensity of profile of tooth.
Adopt plasma spraying technology; in the bottom surface at identical cutting edge 4 places of two structures from cutting edge inward side spray be coated with the metal level of one deck high rigidity, high abrasion; forming width is 2 spraying areas of H; spraying area width H is 10～15 millimeters; the thickness of metal level is 0.2～0.3 millimeter, and spraying area blade cutting edge is protected, and improves its abrasion resistance properties; unsuitable tipping, cutting edge is sharp.
Consult Fig. 4, the profile of tooth of blade tooth is optimized design, specifically: the tooth surface shape of blade tooth is optimized design, the tooth surface shape of blade tooth is three-dimensional bionic curved surface by plane optimizing, the shape of cross section of blade tooth is three-dimensional bionic circular arc pointed shape by Triangles Optimization, the radius R of bionical circular arc 8 is 6～7 millimeters, i.e. R=6～7 millimeter.Tooth angle 7 is optimized to design, i.e. β=50～55 °, space width 9 is set to t=1.8～2mm.Profile of tooth cross section is thickened, can make blade tooth-shape structure intensity greatly improve.Variation according to cutting edge tooth surface shape, the wearing character and the rate of depreciation that are decided by wedge surface seamed edge, according to cane cut rear its crops for rotation relative movement orbit and wear trace on knife section end face, can reach the effect of self-sharpening and control knife section faceted pebble, seamed edge wear rate simultaneously.Solve traditional product and collapsed the problems such as tooth, cutting edge rust, cutting efficiency reduction, wear out failure, extended product service life.
Between the described sword face that is processed with the blade tooth being parallel to each other and the bottom surface of bionical farm machinery knife section, angle is sword face angle λ, the utility model locating active face angle λ carries out mechanical bionic optimization adjustment, sword face angle is adjusted into λ=20～23 °, the utility model carries out mechanical bionic optimization adjustment to traditional knife section groove angle δ, described groove angle δ is the angle on longitudinal plane of symmetry of blade tooth and the long base of knife section working portion, and groove angle is adjusted into δ=0～5 °.Contribute to the cold bulk forming of profile of tooth, contribute to extension and the groove blade self-sharpening of teeth groove, the more important thing is and make blade keep cutting sharp, cutting efficiency improves, and reduces complete machine energy resource consumption.
Blade adopts carbon constructional quality steel, and plasticity, good toughness are conducive to press tooth to be shaped.
Adopt fine-edge blanking technology to make blanking, the one step completed combination process of punching, assembling and positioning dimensional accuracy improves, and fracture surface roughness reduces.
Through installation test examination, bionical knife section product and traditional knife section product contrast by within original 15 to 20 days, extending to 20-25 days service life.
In a word, this bionical knife section product has not only been realized the upgrading of product, and integrates various advanced manufacturing technologies, has formed a whole set of new technology of manufacturing blade of farm machine.
The step of tradition farm machinery knife section processing method is as follows:
1-milling inclined-plane, lower billot-blanking-punching-typewriting-milling inclined-plane, 2-mill teeth, 1-mill teeth, 2-quenching-sharpening
The step of bionical farm machinery knife section processing method described in the utility model is as follows:
Lower billot-essence punching (blanking, punching combination process)-press tooth, the combination process-sharpening-plasma spraying of typewriting
1. blanking
Bionical farm machinery knife section described in the utility model is selected 45# steel plate, replaced the tool steel T9 that traditional farm machinery knife section adopts, its objective is the cold volume precision form that utilizes its good plasticity to realize fine-edge blanking and realize profile of tooth, can greatly reduce the material cost of blade simultaneously; 45# steel plate is processed into billot.
2. adopt fine-edge blanking combination process to process bionical farm machinery knife section profile and two installing holes:
Fine-edge blanking technique is the new method in punching press separation circuit, be characterized in that cross section quality is good, euphotic belt is longer, in processing method described in the utility model, adopt blanking punching compound die, a stamping-out can be realized the punching in bionical farm machinery knife section profile blanking and 5.5 millimeters of holes of 2 diameters, and production efficiency is high; Its key is the selection in blanking die gap while grasping fine-edge blanking.The utility model adopts fine-edge blanking combination process to replace common stamping processes bionic mechanical knife section profile and two installing holes, and Product Assembly location dimension precision is improved, and fracture surface roughness reduces.
3. adopt cold volume accurate forming method to process bionical farm machinery knife section profile of tooth:
Bionical farm machinery knife section processing method described in the utility model adopts the compound die of mold pressing profile of tooth and identification marking character and graphic, realize at normal temperatures the shaping of cold bulk forming and the trade mark character and graphic of profile of tooth, after profile of tooth extrudes, continuous whole, bright and clean without burr, without defects such as hypodontia, curved teeth.
The utility model adopts cold volume accurate forming method to replace machine cut processing method, profile of tooth through cold volume precise forming process compacting, metallic fiber is complete fine and closely woven continuous, be not cut off, greatly improved profile of tooth intensity, hardness and wearability, reduced manufacturing procedure, saving equipment, has improved production efficiency.
4. adopt local induction hardening method to heat-treat bionical farm machinery knife section profile of tooth:
Quench zone is controlled in 10 millimeters, and quenching hardness is controlled at HRC48-52, and non-quench zone hardness is not more than HRC35.
5. adopting preliminary grinding operation is mainly that the excess metal burr grinding that mold pressing is produced is removed, then removes surperficial pollution before adopting sharpening operation to solve plasma spraying, and sprayed coating can be combined firmly with matrix.
6. The plasma spraying technology, will contain manganese,Peng (Fe450), silicon iron base alloy powder coating the underside in biomimetic agricultural machinery blades, generate a alloying is the combination of strong, high hardness, wear resistance of the metal layer, the blade edge protection, improve the wear resistance and keep the blade sharp, prolong service life.This technological operation is implemented simple and convenient, and coating is smooth smooth, can accurately control thickness (this product is 0.2 to 0.3 millimeter), and workpiece influence of thermal deformation is little, and matrix can not change, and workpiece heating temperature can be controlled in below 200 degree.The sprayed on material Fe450 excellent performance of resistance to adhesive wear, and have certain resistance to abrasion of particles and resistance to particle erosion ability, identical with applying working condition.
Claims (4)
1. a bionical farm machinery knife section, is characterized in that, described bionical farm machinery knife section is plank frame part, mounting portion and working portion, consists of;
Described mounting portion is the plate structure part of rectangle, and 2 installation through holes that structure is identical are set on it symmetrically, and the line of centres of installation through hole that 2 structures are identical and the long limit of the mounting portion of rectangle are parallel;
Described working portion is the plate structure part of isosceles-trapezium-shaped, or more precisely, the plate structure part that working portion is inverted isosceles-trapezium-shaped; The long base of the working portion of isosceles-trapezium-shaped equates and is connected with the long limit of the mounting portion of rectangle to be symmetrically plate armature part;
2 waist limits of the working portion of isosceles-trapezium-shaped are the cutting edge (4) that 2 structures of bionical farm machinery knife section are identical, the blade tooth being parallel to each other being processed with on the inboard sword face of the identical cutting edge (4) of 2 structures, form left groove face, right groove face (3), left groove face is identical with right groove face (3) structure, and left groove face is parallel with the long base of the plane of symmetry of each blade tooth in right groove face (3) and the working portion of isosceles-trapezium-shaped;
On the bottom surface of bionical farm machinery knife section, from 2 identical cutting edges (4) of structure, toward inboard, process 2 spraying areas.
2. according to bionical farm machinery knife section claimed in claim 1, it is characterized in that, between described sword face and the bottom surface of bionical farm machinery knife section, angle is sword face angle λ, and sword face angle λ is set to 20～23 °, i.e. λ=20～23 °.
3. according to bionical farm machinery knife section claimed in claim 1, it is characterized in that, the tooth surface shape of described blade tooth is three-dimensional bionic curved surface by plane optimizing, the shape of cross section of blade tooth is three-dimensional bionic circular arc pointed shape by Triangles Optimization, the radius R of bionical circular arc (8) is 6～7 millimeters, i.e. R=6～7 millimeter; Tooth angle (7) is optimized to design, i.e. β=50～55 °; Space width (9) is set to 1.8～2mm, i.e. t=1.8～2mm, and groove angle is 0～5 °, i.e. δ=0～5 °.
4. according to bionical farm machinery knife section claimed in claim 1, it is characterized in that, described refers to toward 2 spraying areas of inboard processing from 2 identical cutting edges (4) of structure on the bottom surface of bionical farm machinery knife section:
Spraying area width H is 10～15 millimeters, and the thickness of the metal level that spraying area sprays is 0.2～0.3 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373117.XU CN203942789U (en) | 2014-07-07 | 2014-07-07 | Bionical farm machinery knife section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373117.XU CN203942789U (en) | 2014-07-07 | 2014-07-07 | Bionical farm machinery knife section |
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| CN203942789U true CN203942789U (en) | 2014-11-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104126360A (en) * | 2014-07-07 | 2014-11-05 | 吉林大学辊锻件厂 | Bionic agricultural machinery movable blade and manufacturing method thereof |
| CN109807575A (en) * | 2019-02-24 | 2019-05-28 | 江苏扬碟钻石工具有限公司 | A kind of high-performance blade processing technology |
-
2014
- 2014-07-07 CN CN201420373117.XU patent/CN203942789U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104126360A (en) * | 2014-07-07 | 2014-11-05 | 吉林大学辊锻件厂 | Bionic agricultural machinery movable blade and manufacturing method thereof |
| CN109807575A (en) * | 2019-02-24 | 2019-05-28 | 江苏扬碟钻石工具有限公司 | A kind of high-performance blade processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20160707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |