CN104982138A - Reed harvester bionic cutting blade and manufacturing method thereof - Google Patents

Abstract

The invention relates to a reed harvester bionic cutting blade, which belongs to the technical field of agriculture machinery apparatuses, wherein the blade comprises a blade substrate provided with upper and lower surfaces and two bevel edges; the blade substrate can be transited to the upper surface through a blade face of the lower surface through which the two edges are respectively used to formed blade angles of the blade; a set of cutting teeth are set at the outer side of the blade face; each of the cutting teeth is constituted of a cylindrical tooth back and a cutting tooth profile; a tooth top angle larger than the blade angle of the blade is formed between a cylindrical axis used to form the cylindrical tooth back and the lower surface; and the cutting tooth profile is an equidistant curve of a fitting curve of a longicorn upper jaw cutting tooth. By adopting the reed harvester bionic cutting blade, the cutting resistance is obviously reduced, so the power consumption is greatly decreased and the cutting quality is good, thus the completely avoiding the phenomena that reed stems are pushed over by the cutting blade and the conveying of a cutting platform is stopped; we have reasons to believe that an upper jaw with unique advantage in terms of chewing, biting and cutting is formed in the longicorn after a long evolution and that the bionic application to the reed harvester cutting blade is an ideal and optimal design.

Description

A kind of bionical cutting blade of reed harvester and manufacture method thereof

Technical field

The present invention relates to a kind of cutter, the bionical cutting blade of especially a kind of reed harvester, relates to its manufacture method simultaneously, belongs to technical field of agricultural mechanical equipment.

Background technology

Reed is a kind of perennial gramineous plants, and once plantation can Multiple harvests, is very important ecology, society, economic resources, all has great advantage as paper making raw material, good forage, solid native whole natural pond, the many-side such as to keep ecological balance.

Maturing stage reed stalk xylem crust is thicker, quality is comparatively hard, according to the applicant understood: back and forth two problems that moving-blade triangle pointed tooth cutter ubiquity Cutting Drag is large, power consumption is high of reed harvester employing at present.And facts have proved, in fact also there is very large problem in cut quality, because existing cutting blade reliably can not cut off reed stalk in time, and along with the advance of grain header, reed stalk will be pushed over by cutter, cause leakage cut, ceding of Taiwan conveying blocking, stem stalk a series of chain reaction such as to topple over, and causes machine to receive Frequent Troubles, had a strong impact on the operating efficiency of Reed and machine and to have produced effects benefit.

Therefore, develop Cutting Drag is little, low in energy consumption, cut quality is good cutter blade to become and realize that reed harvester is efficient, high-quality, the key subject of low consumption harvesting.

Summary of the invention

The object of the invention is to: for existing reed harvester cutting blade Problems existing, propose the bionical cutting blade of reed harvester that a kind of Cutting Drag is little, low in energy consumption, cut quality is good, provide its manufacture method simultaneously.

For reaching above object, applicant notices: longicorn take reed stems and leaves as food, and be the common insect pests of reed, the structure of its mouthpart maxilla uniqueness has excellent chewing and cuts off performance, can bite broken disposable for the plant stipes be clipped in the middle of the maxilla of left and right, cause whole strain reed withered death.If draw evil for benefit, this characteristic of longicorn is applied in the research and design of reed harvester cutting blade by bionic principle, is expected to form low-resistance, low consumption, high-quality cutting blade.

The technical solution of the present invention that basis to longicorn maxilla cutting part bionics fiber is formed is: the bionical cutting blade of a kind of reed harvester, comprise the blade base with upper and lower surface and hypotenuse, described blade base is transitioned into upper surface by the hypotenuse of lower surface by the sword face forming the blade basil, the outside spacers in described sword face distributes one group of cutting teeth, it is characterized in that: described cutting teeth is made up of the cylinder back of tooth and cutting teeth profile, the cylinder axis forming the described cylinder back of tooth and lower surface become to be greater than the tooth angle of the blade basil, described cutting teeth profile is the equidistant curve of longicorn maxilla cutting teeth matched curve.

Of the present invention improving further is that described cutting teeth profile is the equidistant curve of following fit curve equation:

y=ax ⁴-bx ³+cx ²-dx+ e

Wherein the span of the span of the span of a to be the span of 0.007x85% ~ 0.007x115%, b be 0.031x85% ~ 0.031x115%, c to be the span of 0.114x85% ~ 0.114x115%, d be 0.546x85% ~ 0.546x115%, e is-2 ~ 2.

Of the present invention further improving is that the tooth pitch of described cutting teeth is 3 ~ 7 mm, and tooth depth and tooth pitch ratio are 0.16 ~ 0.4; The described blade basil is 15 ° ~ 30 °, and tooth angle is 25 ° ~ 37.

Of the present invention improving further is again, described blade base is that isosceles triangle or isosceles trapezoid and rectangle pommel combine, and has the hypotenuse of two symmetries.

Of the present invention also further improving is, the projection on the upper and lower surface of blade of the cylinder axis of the described cutting teeth cylinder back of tooth and blade left and right central axis.

The manufacture method basic step of the bionical cutting blade of reed harvester of the present invention is as follows:

Step one. blanking---get the blade base blank of required form ready;

Step 2. setting---select constant pitch, tooth depth, the blade basil, tooth angle, and determine that the equidistant curve of longicorn maxilla cutting teeth matched curve is as cutting teeth profile accordingly, and form the body diameter of the cylinder back of tooth;

Step 3. tangent plane---process sword face by the blade basil;

Step 4. cutting teeth---the cylinder back of tooth forming each adjacent cutting teeth is processed by the cylinder knife tool that tooth pitch requirement diameter is equal with the body diameter determined;

Step 5. cut exterior feature---process cutting teeth profile by the cutting teeth profile determined.

The bionical cutting blade of reed harvester of the present invention is adopted to carry out Reed, compared with prior art, because Cutting Drag obviously reduces, therefore power consumption reduces greatly, and cut quality is good, completely avoid reed stalk and pushed over by cutter, and ceding of Taiwan conveying clogging.Have reason to think: longicorn is through very long evolution, and defining and sting the maxilla that butt mask has unique advantage chewing, be a kind of desirable optimal design, and its manufacture method is practical by its bionical reed harvester cutting blade that applies to.

Accompanying drawing explanation

The embodiment reflected by the following drawings is illustrated, the features and advantages of the present invention will become easier to understand.

Fig. 1 is the structural representation of one embodiment of the invention.

Fig. 2 is the A place partial enlarged drawing of Fig. 1.

Fig. 3 is the M-M section partial enlarged drawing of Fig. 1.

Fig. 4 is that longicorn maxilla flank profil extracts point and flank profil matched curve.

Embodiment

Embodiment one

As shown in Figure 1, blade base 1 combines for isosceles triangle and rectangle pommel the bionical cutting blade of reed harvester of the present embodiment, in approximate isosceles triangle, has upper and lower surperficial 1-1,1-2, and two hypotenuses.The rectangular end of blade base 1 is provided with locating hole 4.

Blade base 1 is transitioned into upper surface 1-1 by two hypotenuses of lower surface 1-2 respectively by the sword face 3 forming blade basil β.The outside spacers in sword face 3 distributes one group of cutting teeth 2.

From Fig. 2, Fig. 3, cutting teeth 2 is made up of cylinder back of tooth 2-1 and cutting teeth profile S, cylinder axis and the lower surface 1-2 of formation cylinder back of tooth 2-1 become to be greater than the tooth angle γ of blade basil β, and cutting teeth profile S is the equidistant curve of longicorn maxilla cutting teeth matched curve.

Specifically, the preferred parameter tooth pitch p of the structural parameters that the single cutting teeth of the bionical cutting blade of reed harvester is feasible and the present embodiment can be 3 ~ 7 mm, preferred 5.5mm; Tooth depth h and tooth pitch p ratio are 0.16 ~ 0.4, preferably 0.19; Blade basil β is 15 ° ~ 30 °, preferably 20 °; Cutting teeth tooth angle γ is 25 ° ~ 37 °, preferably 30 °; Blade base thickness t is 2 ~ 4 mm, preferred 3mm.

As shown in Figure 4, fit curve equation is the cutting teeth profile S of cutting teeth:

y=0.007x ⁴-0.031x ³+0.114x ²-0.546x+ e

In equation, each rank coefficient can in the range of its positive and negative deviation 15%, and wherein the excursion of intercept is-2 ~ 2.

According to the parameter determined above, the Suitable cylindrical radius forming cylinder back of tooth 2-1 can be extrapolated.For the ease of the reciprocating translation in left and right cutting, the projection on the upper and lower surface of blade of the cylinder axis of the cutting teeth cylinder back of tooth and blade left and right central axis, forming curves Q is handed in this cylinder and 3 sections, sword face.

The basic manufacturing step of the bionical cutting blade of reed harvester of the present embodiment is as follows

Step one. blanking---get the blade base blank of required form ready;

Step 2. setting---select constant pitch, tooth depth, the blade basil, tooth angle, and determine that the equidistant curve of longicorn maxilla cutting teeth matched curve is as cutting teeth profile accordingly, and form the body diameter of the cylinder back of tooth;

Step 3. tangent plane---process sword face by the blade basil;

Step 4. cutting teeth---process by the tooth pitch requirement diameter cylindrical milling cutter equal with the body diameter determined (also can with broaching tool or other forming tool) the cylinder back of tooth forming each adjacent cutting teeth;

Step 5. cut exterior feature---go out cutting teeth profile by the cutting teeth profile linear cutter determined.

During use, two of requirement groups of bionical cutting blade lower surfaces of the present embodiment are mounted opposite on reed harvester, form the reciprocating cutter sweep of shaving shape.Result repetition test shows, Cutting Drag obviously reduces, and power consumption reduces greatly, avoids the phenomenons such as reed stalk is pushed over by cutter, ceding of Taiwan conveying blocking, can guarantee cutting results quality.

In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.

Claims (6)

1. the bionical cutting blade of reed harvester, comprise the blade base with upper and lower surface and hypotenuse, described blade base is transitioned into upper surface by the hypotenuse of lower surface by the sword face forming the blade basil, the outside spacers in described sword face distributes one group of cutting teeth, it is characterized in that: described cutting teeth is made up of the cylinder back of tooth and cutting teeth profile, the cylinder axis forming the described cylinder back of tooth and lower surface become to be greater than the tooth angle of the blade basil, and described cutting teeth profile is the equidistant curve of longicorn maxilla cutting teeth matched curve.

2. the bionical cutting blade of reed harvester according to claim 1, is characterized in that: described cutting teeth profile is the equidistant curve of following fit curve equation:

y=ax ⁴-bx ³+cx ²-dx+e

Wherein the span of the span of the span of a to be the span of 0.007x85% ~ 0.007x115%, b be 0.031x85% ~ 0.031x115%, c to be the span of 0.114x85% ~ 0.114x115%, d be 0.546x85% ~ 0.546x115%, e is-2 ~ 2.

3. the bionical cutting blade of reed harvester according to claim 2, is characterized in that: the tooth pitch of described cutting teeth is 3-7 mm, and tooth depth and tooth pitch are than being 0.16-0.4; The described blade basil is 15 °-30 °, and tooth angle is 25 °-37 °.

4. the bionical cutting blade of reed harvester according to claim 3, is characterized in that: described blade base is that isosceles triangle or isosceles trapezoid and rectangle pommel combine, and has the hypotenuse of two symmetries.

5. the bionical cutting blade of reed harvester according to claim 4, is characterized in that: the projection on the upper and lower surface of blade of the cylinder axis of the described cutting teeth cylinder back of tooth and blade left and right central axis.

6. the manufacture method of the bionical cutting blade of the arbitrary described reed harvester of claim 1 to 5, is characterized in that basic step is as follows:

Step one. blanking---get the blade base blank of required form ready;

Step 2. setting---select constant pitch, tooth depth, the blade basil, tooth angle, and determine that the equidistant curve of longicorn maxilla cutting teeth matched curve is as cutting teeth profile accordingly, and form the body diameter of the cylinder back of tooth;

Step 3. tangent plane---process sword face by the blade basil;

Step 4. cutting teeth---the cylinder back of tooth forming each adjacent cutting teeth is processed by the cylinder knife tool that tooth pitch requirement diameter is equal with the body diameter determined;

Step 5. cut exterior feature---process cutting teeth profile by the cutting teeth profile determined.