JPH09154362A - Mowing blade - Google Patents
Mowing bladeInfo
- Publication number
- JPH09154362A JPH09154362A JP34649895A JP34649895A JPH09154362A JP H09154362 A JPH09154362 A JP H09154362A JP 34649895 A JP34649895 A JP 34649895A JP 34649895 A JP34649895 A JP 34649895A JP H09154362 A JPH09154362 A JP H09154362A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- wear
- mowing
- resistant metal
- mowing blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 244000025254 Cannabis sativa Species 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 229910052796 boron Inorganic materials 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002420 orchard Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nonmetal Cutting Devices (AREA)
- Harvester Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、農地，果樹園，ゴ
ルフ場，堤防等の草類を刈るときに用いられる草刈刃に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grass cutting blade used for cutting grass such as farmland, orchards, golf courses, and levees.
【０００２】[0002]
【従来の技術】従来、（刈払機に用いられる）草刈刃の
複数の刃部は、各々一枚の鋼から形成されていた。2. Description of the Related Art Conventionally, each of a plurality of blade portions of a grass cutting blade (used in a brush cutter) is formed of one piece of steel.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この刈
払機を用いて草刈り作業を繰り返し行えば、（草刈刃
の）刃部の摩耗が激しくなる。このため、（このように
摩耗した刃部を有する）草刈刃を別の新しい草刈刃に取
り替える頻度が高くなるので、この取り替え作業が面倒
であると共に、（予備の草刈刃の部品点数が多くなり）
不経済であった。However, when the mowing work is repeatedly performed by using this brush cutter, the blade portion (of the mowing blade) is abraded significantly. For this reason, the grass cutting blade (having such a worn blade portion) is frequently replaced with another new grass cutting blade, which makes the replacement work troublesome and increases the number of spare grass cutting blade parts. )
It was uneconomic.
【０００４】そこで、本発明が上述の欠点を解決すると
共に、（下面の）鋼の摩耗が進行しても（上面の）耐摩
耗性金属が刃部全体の役割をして切れ味の変わらない、
かつ、長期にわたって交換不要な草刈刃を提供すること
を目的とする。Therefore, the present invention solves the above-mentioned drawbacks, and even if the wear of the steel (on the lower surface) progresses, the wear-resistant metal (on the upper surface) plays the role of the entire blade portion and the sharpness does not change.
Moreover, it is an object of the present invention to provide a mowing blade that does not need replacement for a long period of time.
【０００５】[0005]
【課題を解決するための手段】本発明に係る草刈刃は、
周縁に沿って複数の刃部を有する平板状草刈刃本体の該
刃部の上面に、耐摩耗性金属を溶着一体化して二層化に
したものである。A grass cutting blade according to the present invention comprises:
The plate-shaped grass cutting blade main body having a plurality of blades along the peripheral edge is made into a two-layer structure by welding and integrating wear-resistant metal on the upper surface of the blade.
【０００６】[0006]
【発明の実施の形態】図１は、本発明に係る草刈刃の平
面図を示し、この草刈刃は、刈払機の先端に取付けて用
いられるものであり、複数の刃部２ａ…を周縁に沿って
有する平板状草刈刃本体１を有し、この刃部２ａ…は、
鉛直部４と、弯曲部５と、から成り、鋼等の比較的柔ら
かい母材から形成されている。1 shows a plan view of a mowing blade according to the present invention. This mowing blade is used by being attached to the tip of a brush cutter and has a plurality of blade portions 2a ... It has a plate-like grass cutting blade body 1 which is provided along with, and the blade portions 2a ...
It is composed of a vertical portion 4 and a curved portion 5, and is formed of a relatively soft base material such as steel.
【０００７】また、刃部２ａの上面のみに、（ニッケル
又は、コバルト基自溶合金やタングステンカーバイト自
溶合金等の）耐摩耗性金属２ｂが溶着一体化されて二層
化とされている。即ち、この耐摩耗性金属２ｂは、具体
的には、Ｎｉ・Ｃｒ・Ｂ・Ｓｉを主成分とした低融点の
合金での高密度高強度の被覆をほどこすことが可能ない
わゆる溶融金属溶射（メタルフューズコーティング）に
て、刃部２ａに液相拡散され、この刃部２ａと耐摩耗性
金属２ｂの二層にて積層刃部２が形成されている。A wear-resistant metal 2b (such as nickel or cobalt-based self-fluxing alloy or tungsten carbide self-fluxing alloy) is welded and integrated only on the upper surface of the blade 2a to form a double layer. . That is, this wear-resistant metal 2b is, specifically, a so-called molten metal spraying capable of providing a high-density and high-strength coating with a low melting point alloy containing Ni, Cr, B, and Si as main components. By (metal fuse coating), the liquid phase is diffused to the blade portion 2a, and the laminated blade portion 2 is formed by two layers of the blade portion 2a and the wear resistant metal 2b.
【０００８】なお、この耐摩耗性金属２ｂとしては、頂
角120 °，先端半径0.2mm のダイヤモンド製円錐形圧子
を用いて試験を行った場合のロックウェル硬さが55〜65
のものが好ましい。As the wear-resistant metal 2b, a Rockwell hardness of 55 to 65 was obtained when a test was performed using a diamond conical indenter having an apex angle of 120 ° and a tip radius of 0.2 mm.
Are preferred.
【０００９】次に、この草刈刃の積層刃部２について、
（図１中のＡ−Ａ断面図である）図２に基づいて説明す
る。なお、図１の矢印Ｍ方向へ回転するように草刈機に
取付けられる。刈払機にて、農地，果樹園，ゴルフ場，
堤防等の草類を刈る草刈作業を繰り返し行うと、草刈刃
の積層刃部２は、図２の（イ）の状態から図２の（ロ）
の状態に変化する。つまり、（耐摩耗性金属２ｂに比べ
て材質が柔らかい）地鋼から成る刃部２ａの刃先部３─
───鉛直部４に相当する────から内方へと、この
刃部２ａが耐摩耗性金属２ｂより先に摩耗していく。こ
のため、耐摩耗性金属２ｂが、図２の（ロ）に示す如
く、自動的に（刃部２ａに対して外方へ）突出した状態
になり、積層刃部２としての役目を果たすことになる。
従って、積層刃部２の（草を刈るという）機能は、常
時、再生されることになる。特に、図２の（イ）に示す
ように、耐摩耗性金属２ｂを（直角の）稜のある平板状
にするだけでよい（鋭角エッジは不要）。Next, regarding the laminated blade portion 2 of this mowing blade,
It will be described with reference to FIG. 2 (a sectional view taken along line AA in FIG. 1). In addition, it is attached to the mower so as to rotate in the direction of arrow M in FIG. With a brush cutter, farmland, orchard, golf course,
When the mowing work for mowing grass such as embankments is repeatedly performed, the laminated blade portion 2 of the mowing blade is changed from the state of (a) of FIG. 2 to (b) of FIG.
Changes to the state of. That is, the blade tip portion 3a of the blade portion 2a made of base steel (made of a softer material than the wear resistant metal 2b)
The blade portion 2a is worn inward from the wear resistant metal 2b inward from the vertical portion 4 inward. Therefore, the wear-resistant metal 2b automatically protrudes (outwardly of the blade 2a) as shown in FIG. 2B, and serves as the laminated blade 2. become.
Therefore, the function (called mowing) of the laminated blade section 2 is always reproduced. In particular, as shown in FIG. 2A, the wear-resistant metal 2b may be formed into a flat plate having a (right angle) edge (a sharp edge is not necessary).
【００１０】[0010]
【発明の効果】本発明は上述の構成により次のような著
大な効果を奏する。According to the present invention, the following significant effects can be obtained by the above-described structure.
【００１１】刃部２ａの上層側に、耐摩耗性金属２ｂが
溶着一体化されて二層化とされているので、下層側の軟
鋼（地鋼）等の刃部２ａが摩耗し、上層の硬度の高い耐
摩耗性金属２ｂが残留して、鋭いエッジを生成すること
ができる。そのため、長期間にわたり切れ味が不変であ
る。そして、（予備の）草刈刃を作業現物へ持参する必
要がなくなる。Since the wear resistant metal 2b is welded and integrated on the upper layer side of the blade portion 2a to form a double layer, the blade portion 2a of the mild steel (ground steel) on the lower layer side is worn and the upper layer side The wear resistant metal 2b having high hardness remains and a sharp edge can be generated. Therefore, the sharpness remains unchanged for a long period of time. Then, it is not necessary to bring the (spare) cutting blade to the actual work item.
【図１】本発明の実施の一形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.
【図２】Ａ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA.
１ 草刈刃本体 ２ａ 刃部 ２ｂ 耐摩耗性金属 1 Mowing blade body 2a Blade part 2b Abrasion resistant metal
Claims (1)
平板状草刈刃本体１の該刃部２ａ…の上面に、耐摩耗性
金属２ｂを溶着一体化して二層化にしたことを特徴とす
る草刈刃。1. A wear-resistant metal 2b is welded and integrated into a double layer on the upper surface of the blade portion 2a of the plate-shaped grass cutting blade body 1 having a plurality of blade portions 2a along its peripheral edge. A characteristic mowing blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34649895A JPH09154362A (en) | 1995-12-11 | 1995-12-11 | Mowing blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34649895A JPH09154362A (en) | 1995-12-11 | 1995-12-11 | Mowing blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09154362A true JPH09154362A (en) | 1997-06-17 |
Family
ID=18383839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34649895A Pending JPH09154362A (en) | 1995-12-11 | 1995-12-11 | Mowing blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09154362A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107900600A (en) * | 2017-12-19 | 2018-04-13 | 马鞍山市绿之友机械制造有限公司 | A kind of robotic welding apparatus and its welding method for cutting careless hobboing cutter |
-
1995
- 1995-12-11 JP JP34649895A patent/JPH09154362A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107900600A (en) * | 2017-12-19 | 2018-04-13 | 马鞍山市绿之友机械制造有限公司 | A kind of robotic welding apparatus and its welding method for cutting careless hobboing cutter |
| CN107900600B (en) * | 2017-12-19 | 2023-05-26 | 马鞍山市绿之友机械制造有限公司 | Robot welding device for grass cutting hob and welding method thereof |
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