JPH0259211A - Saw blade for power tool and manufacture thereof - Google Patents
Saw blade for power tool and manufacture thereofInfo
- Publication number
- JPH0259211A JPH0259211A JP20712288A JP20712288A JPH0259211A JP H0259211 A JPH0259211 A JP H0259211A JP 20712288 A JP20712288 A JP 20712288A JP 20712288 A JP20712288 A JP 20712288A JP H0259211 A JPH0259211 A JP H0259211A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cutting edge
- blade
- heat treatment
- power tool
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 238000005496 tempering Methods 0.000 claims abstract description 9
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 9
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 6
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910001315 Tool steel Inorganic materials 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims abstract description 4
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 239000010953 base metal Substances 0.000 claims description 17
- 238000010791 quenching Methods 0.000 claims description 11
- 230000000171 quenching effect Effects 0.000 claims description 11
- WSWCOQWTEOXDQX-MQQKCMAXSA-M (E,E)-sorbate Chemical compound C\C=C\C=C\C([O-])=O WSWCOQWTEOXDQX-MQQKCMAXSA-M 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 9
- 229940075554 sorbate Drugs 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 16
- 239000000126 substance Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- 101100203924 Caenorhabditis elegans sorb-1 gene Proteins 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/12—Straight saw blades; Strap saw blades
- B23D61/127—Straight saw blades; Strap saw blades of special material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えばステンレス、鉄鋼板等の切断に使用し
て好適な電動工具のソーブレートに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sawbrate for a power tool suitable for use in cutting stainless steel, steel plates, etc., for example.
各種電動ソーは、モータの回転運動を種々の方法により
往復運動に変え、その運動を利用してソーブレートを往
復可動させ、金属材料、その他各種の被削材を切断する
ものである。Various electric saws convert the rotary motion of a motor into reciprocating motion using various methods, and utilize this motion to reciprocate the saw blade to cut metal materials and various other work materials.
このような公知のソーブレートは、使用時間の経過と共
に切刃部が必然的に摩耗し、著しい場合は、数分間の使
用で切刃部が摩耗したり、多量の切削熱が発生して被削
材へ悪影響を与えていた。In such known saw plates, the cutting edge inevitably wears out over time, and in severe cases, the cutting edge wears out after just a few minutes of use, or a large amount of cutting heat is generated, causing damage to the workpiece. This had a negative impact on the material.
この現象は、特にステンレス鋼板の切断において著しい
とされていた。また、ジグソー等にあって、板材を種々
の形状に切断加工する場合、ソーブレートに曲げ応力が
負荷されるため、ソーブレートが折損し易い。This phenomenon was said to be particularly noticeable when cutting stainless steel sheets. Furthermore, when using a jigsaw or the like to cut a plate material into various shapes, bending stress is applied to the saw plate, so that the saw plate is likely to break.
このような背景から、切削時の摩耗、特にステンレス切
削において、耐摩耗性に優れ、かつ折れにくいソーブレ
ートの開発が強く望まれていた。Against this background, there has been a strong desire to develop a saw plate that has excellent wear resistance and is resistant to breakage during cutting, particularly when cutting stainless steel.
本発明は以上の点に鑑みてなされたもので、その目的と
するところは、材質の化学組成と熱処理条件及び切刃の
角度等に配慮を施して、各種ソーブレートの切削速度と
耐摩耗性の向上を図ることにある。The present invention has been made in view of the above points, and its purpose is to improve the cutting speed and wear resistance of various sorbents by taking into consideration the chemical composition of the material, heat treatment conditions, angle of the cutting edge, etc. The aim is to improve.
本発明者らは、前述の課題解決のため、材質と熱処理、
切刃の角度等の研究を重ね、次のようにしてソーブレー
トを構成する。In order to solve the above-mentioned problem, the present inventors have developed materials, heat treatment,
After repeated research on the angle of the cutting edge, etc., the saw plate was constructed as follows.
先ず、ソーブレートの材質が発明を把えれば、その切刃
部は、１．１〜１．４％Ｃ１３〜５％Ｃｒ、９〜１２％
Ｃｏ、８〜１２％Ｗ、２〜５％Ｍｏ、３〜４％Ｍ、残り
がＦｅ及び不純物とからなる高速度合金工具網で構成し
、台金部は、０．３〜０．６％Ｃ１０，８〜１．５％Ｍ
ｏ、１〜２％Ｃｒ、０．１〜０．２％ｖ、０．５〜１．
５％Ｎｉを添加主成分とする合金鋼で構成する。First, if the material of the saw plate is understood according to the invention, its cutting edge should be made of 1.1-1.4%C, 13-5%Cr, 9-12%
Consisting of a high-speed alloy tool network consisting of Co, 8-12% W, 2-5% Mo, 3-4% M, and the rest Fe and impurities, the base metal part is 0.3-0.6% C10,8~1.5%M
o, 1-2% Cr, 0.1-0.2%v, 0.5-1.
Constructed of alloy steel with 5% Ni added as the main component.
そして、このように構成されるソーブレートは、好まし
くは、切刃部及び台金部に同一の熱処理を施し、その熱
処理条件は、焼入れが１２２０〜１２４０℃、焼もどし
が５８０〜６３０’Ｃに設定してなる。Preferably, the saw plate configured as described above is subjected to the same heat treatment on the cutting edge portion and the base metal portion, and the heat treatment conditions are set to 1220 to 1240°C for quenching and 580 to 630'C for tempering. It will be done.
また、構造的には、前記切刃部の中心線は、ソーブレー
トの運動方向の中心線に対し２〜３．３゜の角度に設定
し、且つ切刃角度は、切刃中心線に対し８８〜９５°の
角度に設定することが望ましい。Further, structurally, the center line of the cutting edge is set at an angle of 2 to 3.3 degrees with respect to the center line in the direction of movement of the saw plate, and the cutting edge angle is set at an angle of 88 degrees with respect to the center line of the cutting blade. It is desirable to set the angle to ~95°.
また、以上のような電動工具ソーブレートは次のように
して、製造できる。すなわち、切刃部及び台金部を上述
の組成の異なる材料を用い、これらの異なる材料の切刃
部と台金部を溶接で一体化して複合材とし、この複合材
に同一の熱処理を施せば、ソーブレートが形成される。Further, the power tool saw plate as described above can be manufactured in the following manner. In other words, the cutting edge and base metal parts are made of materials with different compositions as described above, the cutting blade part and base metal part made of these different materials are integrated by welding to form a composite material, and this composite material is subjected to the same heat treatment. If so, a sorbate is formed.
先ずソーブレートの部刃部の材質を、１．１〜１．４％
Ｃ１３〜５％Ｃｒ、９〜１２％Ｃｏ、８〜１２％Ｗ、２
〜５％Ｍｏ、３〜４％Ｖと残りがＦｅ及び不純物とから
成る高速度合金工具鋼としたのは、これ等の組成及び組
成比が少なくなると、耐摩耗性、耐熱性が著しく低下し
、切削工具としての寿命低下を招くためである。この中
で、特に重要な化学組成はＣ，Ｗ、Ｃｏ、■である。ま
た、上述の組成及び組成比の範囲を越えた場合。First, the material of the blade part of the saw plate should be 1.1 to 1.4%.
C13~5%Cr, 9~12%Co, 8~12%W, 2
The high-speed alloy tool steel is made of ~5% Mo, 3~4% V, and the rest is Fe and impurities because as the composition and composition ratio of these components decreases, the wear resistance and heat resistance decrease significantly. This is because the life of the cutting tool will be shortened. Among these, the particularly important chemical compositions are C, W, Co, and ■. In addition, when the above-mentioned composition and composition ratio range is exceeded.
ソーブレートとして適切な金属組織を得にくく、更に脆
さが生じて、切刃の早期折損を生じ機能を低下させる。It is difficult to obtain a suitable metallographic structure as a sawbrate, and furthermore, brittleness occurs, leading to early breakage of the cutting edge and deterioration of function.
そして、前述の組成の中でも切刃部材として最も望まし
い組成の範囲は、１．２〜１゜３％Ｃ５３，８〜４．５
％Ｃｒ、９〜１．１％００３〜４％Ｍｏ、３，２〜３．
７％Ｖ、９．５〜１０．５％Ｇｏ及び残りがＦｅである
。Among the above-mentioned compositions, the most desirable composition range for cutting blade members is 1.2 to 1°3% C53.8 to 4.5.
%Cr, 9-1.1%003-4%Mo, 3.2-3.
7% V, 9.5-10.5% Go and the balance Fe.
次に台金部として、０．３〜０．６％Ｃ１０，８〜１．
５％Ｍｏ、０，１〜０．２％■、１〜２％Ｃｒ、０．５
〜１．５％Ｎｉを添加主成分とする合金鋼を用いたのは
、切刃部の材料にソーブレートとして必要な特性を付与
するための熱処理を施した場合に台金部にも十分な剛性
と曲げ性を付与する必要性からである。この組成及び組
成比の範囲は、ソーブレートの種類によっても異なるが
、ジグソーやセーバーソーのように金属等の切断に用い
られるソーブレートにあっては、その添加主成分の範囲
を０．３５〜０．４５％Ｃ１０，９〜１．２％Ｍｏ、０
，１５〜０．２％Ｖ、１〜１．５Ｃｒ、０．８〜１．２
％Ｎｉとすることが望ましい。Next, as the base metal part, 0.3-0.6% C10.8-1.
5%Mo, 0.1~0.2%■, 1~2%Cr, 0.5
The alloy steel containing ~1.5% Ni as the main additive is used because it provides sufficient rigidity to the base metal when heat treatment is applied to the material of the cutting edge to give it the properties necessary for a sorbate. This is because of the need to impart bendability. The range of this composition and composition ratio varies depending on the type of sorbate, but for sorbates used for cutting metals such as jigsaws and saber saws, the range of the main added components is 0.35 to 0. 45%C10,9~1.2%Mo,0
, 15-0.2%V, 1-1.5Cr, 0.8-1.2
%Ni is desirable.
次に上記切刃部及び台金部の熱処理条件のうち焼入れ温
度を１２２０〜１２４０℃としたのは、１２２０℃以下
の温度で焼入れした場合、切刃部材の炭化物が基材中へ
溶は込む量が少なく、刃物部材としての耐熱性、耐摩耗
性が低下するためであり、また、１２４０”Ｃ以上の焼
入れ温度では、炭化物が必要以上に基材の中に溶は込み
脆さを助長させたり、同一熱処理を施す合金部材の結晶
粒の粗大化を招くためである。また、焼もどし温度を５
８０〜６３０℃としたのは、５８０℃以下では、切刃部
材に溶は込んだ合金元素が炭化物として析出する量が不
十分となり、切削寿命が低下するためであり、６３０℃
以上になると逆に炭化物の析出量が多くなり、基材の耐
熱性を低下させたり１台金部材の剛性が著しく低下し、
曲げ応力が作用した場合に、塑性変形が生じ易くなるた
めである。上述の範囲の中で、ソーブレートとして最も
優れた性能を示す熱処理条件の範囲は、焼入れ１２３０
〜１２３５℃、焼もどし２５９０〜６１０℃である。Next, among the heat treatment conditions for the cutting blade and base metal part, the quenching temperature was set at 1,220 to 1,240°C because when quenching is performed at a temperature of 1,220°C or lower, the carbide of the cutting blade member melts into the base material. This is because the amount of carbide is small and the heat resistance and wear resistance of the blade member decreases.Furthermore, at a quenching temperature of 1240"C or higher, the carbide melts into the base material more than necessary and promotes brittleness. This is because the same heat treatment may cause the crystal grains of the alloy member to become coarser.Also, if the tempering temperature is
The reason for setting the temperature to 80 to 630°C is that at temperatures below 580°C, the amount of alloying elements infiltrated into the cutting blade member will precipitate as carbides, resulting in a decrease in cutting life.
If the amount exceeds that amount, the amount of carbide precipitated will increase, which will reduce the heat resistance of the base material and significantly reduce the rigidity of the metal component.
This is because plastic deformation is likely to occur when bending stress is applied. Among the above ranges, the range of heat treatment conditions that exhibits the best performance as a sorbate is quenching 1230
~1235°C, tempering 2590~610°C.
次にソーブレートの構造として、ソーブレートの運動方
向の中心線に対し、切刃中心線が２．０〜３．３°とな
るような角度を付与したのは、この角度が２°以下では
切刃部が発熱し、切削速度、切削寿命共低下するためで
あり、また、３．３゜以上になると切刃にｍｗ力が作用
し刃部が欠損し易くなるためである。切削速度、切削寿
命が最も優れ、かつ加工品質の優れたものが得られる角
度で筆者らが推奨する値は２．５〜３．０°の範囲であ
る。また、切刃角度を、切刃中心線に対し８８〜９５℃
の角度にすると、切削性が良好となる。Next, in the structure of the saw plate, the cutting edge center line is set at an angle of 2.0 to 3.3 degrees with respect to the center line in the direction of movement of the saw plate.If this angle is less than 2 degrees, the cutting edge This is because the cutting edge generates heat, reducing both the cutting speed and the cutting life. Also, when the angle exceeds 3.3°, mw force acts on the cutting edge, making the cutting edge more likely to break. The value recommended by the authors for the angle that provides the best cutting speed, cutting life, and excellent machining quality is in the range of 2.5 to 3.0 degrees. In addition, the cutting edge angle should be set at 88 to 95 degrees with respect to the cutting edge center line.
When the angle is set to , machinability becomes good.
次に、製造方法として把えれば、前述の異なる組成の材
質の切刃部と台金部を溶接により容易にして１強固に一
体化でき、また、このような複合材に前述した最適な熱
処理を同一条件で同時に施すことで、切刃部材の特性を
失うことなく、台金部にも必要且つ十分な剛性と曲げ性
を与えることができる。Next, from a manufacturing method perspective, the cutting edge and base metal parts made of materials with different compositions can be easily and firmly integrated by welding, and the optimal heat treatment described above for such composite materials By applying both under the same conditions at the same time, it is possible to give the base metal the necessary and sufficient rigidity and bendability without losing the properties of the cutting blade member.
本発明の実施例を図面に基づき説明する。 Embodiments of the present invention will be described based on the drawings.
第１図は、本発明を電動ジグソー用ソーブレートに応用
し、開発したブレードの一例であり、第２図は、その焼
入れ温度、焼もどし温度を変えた時の切削寿命を表わす
実験データ図、第３図はそのブレードに優れた特性を付
与するための必須の熱処理条件を示す説明図、第４図は
、開発ブレードと既存ブレードの切削試験結果の比較同
第５図は開発ブレードと既存ブレードの曲げ特性の比較
図である。Figure 1 shows an example of a blade developed by applying the present invention to a saw blade for an electric jigsaw. Figure 2 is an experimental data diagram showing the cutting life when the quenching temperature and tempering temperature are changed. Figure 3 is an explanatory diagram showing the essential heat treatment conditions to impart excellent properties to the blade, Figure 4 is a comparison of the cutting test results of the developed blade and the existing blade, and Figure 5 is a comparison of the cutting test results of the developed blade and the existing blade. It is a comparative diagram of bending characteristics.
第１図において、１は白金部、２は背面硬化部３は切刃
部、４は溶接部、５は取付は部であるこれらのソーブレ
ート植成要素のうち、台金部１と切刃部３は異なる材質
で構成され、両者が溶接部４を介して一体化される。In Fig. 1, 1 is a platinum part, 2 is a hardened back part, 3 is a cutting edge part, 4 is a welding part, and 5 is a mounting part. Of these sorbate implantation elements, the base metal part 1 and the cutting edge part are 3 are made of different materials, and both are integrated via a welded portion 4.
切刃部３と台金部１とは、〔課題を解決する手段〕の項
で述べた化学組成とその量を規定した組成分の高速度合
金工具鋼及び合金鋼で構成される、また、背面硬化部２
は、ブレードの振れを防止し、切断するための垂力が作
用するローラ（機種によってはないものもある。）との
接触により摩耗を防止するため、衝撃焼入れ等の適切な
方法により硬化させた部位である。The cutting edge part 3 and the base metal part 1 are made of high-speed alloy tool steel and alloy steel with the chemical composition and the amount specified in the section [Means for solving the problem], and Back hardened part 2
The blade is hardened by an appropriate method such as impact hardening to prevent the blade from swinging and to prevent wear due to contact with the roller (some models do not have it), which applies the normal force for cutting. It is a part.
このようなソーブレートを構成する複合材は、同一の熱
処理が施される。これらの複合材の最適な熱処理条件は
、第３図の（ａ）、（ｂ）に示すように焼入れが１２２
０〜ｂ
５８０〜６３０℃である。The composite materials that make up such a sorbate are subjected to the same heat treatment. The optimal heat treatment conditions for these composite materials are as shown in Fig. 3 (a) and (b), when the quenching temperature is 122°C.
0-b 580-630°C.
本ブレードは、切刃部中心線Ｏがブレードの運動方向の
中心線に対し、２〜３．３°の角度を有し、かつ切刃部
３の角度は、切刃中心線に対し８８〜９５″である。In this blade, the cutting edge center line O has an angle of 2 to 3.3 degrees with respect to the center line in the direction of blade movement, and the angle of the cutting edge 3 is 88 to 3.3 degrees with respect to the cutting edge center line. It is 95″.
本ブレードは、切刃部３と台金部ｌの境界が、切刃の高
さより台金部材側にある。In this blade, the boundary between the cutting edge part 3 and the base metal part l is located closer to the base metal member than the height of the cutting blade.
第２図は、本実施例の組成の材料よりなるブレードを用
い、焼入れ及び焼もどし温度を変化させて切断特性を検
討した一例であり、焼入れ温度については１２１５℃、
１２３５℃、１２４５℃の三つを例示した。この図から
も明らかなように。Fig. 2 is an example in which the cutting characteristics were investigated using a blade made of the material with the composition of this example and varying the quenching and tempering temperatures.
Three examples were given: 1235°C and 1245°C. As is clear from this figure.
焼入れ温度１２３５℃、焼もどし温度６００℃付近が最
も切削寿命に優れた結果が得られた。この場合の切削寿
命は、既存ソーブレートの２〜３倍以上の切削寿命を有
する。The best results in cutting life were obtained when the quenching temperature was 1235°C and the tempering temperature was around 600°C. The cutting life in this case is two to three times longer than that of the existing saw plate.
第４図は、第１図に示す本実施例の開発ブレードと、こ
の開発ブレードに比較的類似の形状を有す既存ブレード
Ａと、ステンレス用として市販されている既存ブレード
Ｂとを用い、厚さ２．０＋ａ園のステンレス鋼板を切断
試験した結果である。本結果によると、初期の切削速度
は、既存ブレードＡは、１５〜２０ ａｓ ／ ｍ ｉ
ｎ、既存ブレードＢは１０〜１５■／ ｍ ｉ ｎで
あるのに対し、開発ブレードは、 ４０〜４５ａｎ／ｍ
ｉ ｎと２倍以上の優れた切味を示した。次に切刃部
が摩耗、または摩滅し赤熱して、切削速度が５ｃａ／ｍ
ｉｎとなるまでの総切削材長さの比較では、既存ブレー
ドＡは３〜４ｍ、既存ブレードＢは、２〜３ｍであるの
に対し、開発ブレードは７〜１０ｍであり、既存ブレー
ドへの２倍、Ｂの３倍以上の寿命を示した。FIG. 4 shows the thickness of the developed blade of this embodiment shown in FIG. These are the results of a cutting test on a stainless steel plate of grade 2.0+a. According to the present results, the initial cutting speed of the existing blade A is 15 to 20 as/m i
n, while the existing blade B is 10 to 15 an/min, the developed blade is 40 to 45 an/m.
The cutting quality was more than twice that of i.n. Next, the cutting edge becomes red hot due to wear or abrasion, and the cutting speed decreases to 5ca/m.
Comparing the total length of the cutting material until it becomes in, the existing blade A is 3 to 4 m and the existing blade B is 2 to 3 m, whereas the developed blade is 7 to 10 m, and the length of the developed blade is 7 to 10 m. The lifespan was more than three times that of B.
次に、この種のソーブレートを用いた作業においては、
時としてブレードに佃げの応力が作用することが避けら
れず、この評価のため曲率４０ｍｍの曲線切り試験を行
った。その結果、既存ブレードＡでは、１０本中７本が
取付は部、またはブレード中央より折損し、ブレードＢ
では、１０本中６本が赤熱のため曲りを生じ、ブレード
としての機能を果さなかった。しかし本実施例の開発ブ
レードは、折損も曲りも全く生じなかった。第５図は、
既存ブレードＡ、Ｂと開発ブレードの曲げ試験結果を示
したものであるが、開発ブレードは。Next, when working with this type of sorbate,
It is unavoidable that stress due to bending is sometimes applied to the blade, and for this evaluation, a curve cutting test with a curvature of 40 mm was conducted. As a result, 7 out of 10 of the existing blades A broke at the attachment point or from the center of the blade, and blade B
In this case, 6 out of 10 were bent due to red heat and could not function as blades. However, the blade developed in this example did not break or bend at all. Figure 5 shows
This shows the bending test results for existing blades A and B and the developed blade.
曲げ強さ１．たわみ共優れていることがわかった。Bending strength 1. It was found that both deflection and deflection were excellent.
なお、合金部材として０．６％Ｃ，１，５％Ｓｉとした
通常バネ鋼と言われる材料を用いて、試作検討した結果
でも同じような特性が得られた。Similar characteristics were also obtained when a prototype was investigated using a material commonly called spring steel containing 0.6% C and 1.5% Si as an alloy member.
以上のように本発明によれば、先ずソーブ１ノードの材
質の組成を第１請求項の如く設定することで、耐摩耗性
の大幅な向上を図り、しかも強靭性を与えるソーブレー
トを製作でき、更に第２請求項の熱処理条件や第３請求
項の構造的工夫により、既存のソーブレートに比較し、
初期切削速度で２倍以上、総切削寿命で２〜３倍以上の
優れた特性を有するブレードが開発できた。更に、第４
請求項の如く切刃部材と合金部材を異なる金属より構成
する複合材とし、この複合材を同一熱処理を施すことで
切刃部材の特性を失うことなく、合金部材にも必要十分
な剛性と曲げ性を付与でき、折損の生じにくいソーブレ
ートを提供することができる。As described above, according to the present invention, by first setting the composition of the material of the sorb 1 node as in the first claim, it is possible to manufacture a sorb plate that significantly improves wear resistance and provides toughness. Furthermore, due to the heat treatment conditions in the second claim and the structural improvements in the third claim, compared to existing sorbents,
We were able to develop a blade with superior properties, with the initial cutting speed being more than twice as good and the total cutting life being more than 2 to 3 times as good. Furthermore, the fourth
As claimed in the claims, the cutting blade member and the alloy member are made of a composite material made of different metals, and by subjecting this composite material to the same heat treatment, the properties of the cutting blade member are not lost, and the alloy member has sufficient rigidity and bending. It is possible to provide a sorbate that can impart properties and is less likely to break.
第１図は１本発明を電動ジグソー用ソーブレートに応用
し、開発したブレードの一例を示す正面図、第２図は、
その焼入れ温度、焼もどし温度を変えた時の切削寿命を
表わす実験データ図第３図は、そのブレードに優れた特
性を付与するための必須の熱処理条件を示す説明図、第
４図は、開発ブレードと既存ブレードの切削試験結果の
比較図、第５図は開発ブレー°ドと既存ブレードの曲げ
特性の比較図である。
１は台全部、３は切刃部、４は溶接部。
特許出願人の名称 日立工機株式会社
芋
ｌ
ロ
フ
第２図
一雄Ｊ工旦呈叉Ｃ丑
芽
づ
図
茅４図
第５区Figure 1 is a front view showing an example of a blade developed by applying the present invention to a saw blade for an electric jigsaw, and Figure 2 is a front view showing an example of a blade developed by applying the present invention to a saw blade for an electric jigsaw.
Experimental data showing the cutting life when the quenching temperature and tempering temperature are changed. Figure 3 is an explanatory diagram showing the essential heat treatment conditions to impart excellent properties to the blade. Figure 4 is the development data. A comparison diagram of the cutting test results of the blade and the existing blade. Figure 5 is a comparison diagram of the bending characteristics of the developed blade and the existing blade. 1 is the whole stand, 3 is the cutting edge part, and 4 is the welding part. Patent Applicant Name Hitachi Koki Co., Ltd. Imo l Lof Figure 2 Kazuo J Kodan Presenting Sha C Ushibudzu Figure 4 Figure 5 Section
Claims (1)
１．１〜１．４％Ｃ、３〜５％Ｃｒ、９〜１２％Ｃｏ、
８〜１２％Ｗ、２〜５％Ｍｏ、３〜４％Ｖと残りがＦｅ
及び不純物とからなる高速度合金工具鋼で構成し、台金
部は、０．３〜０．６％Ｃ、０．８〜１．５％Ｍｏ、１
〜２％Ｃｒ、０．１〜０．２％Ｖ、０．５〜１．５％Ｎ
ｉを添加主成分とする合金鋼で構成してなることを特徴
とする電動工具のソーブレート。 ２、第１請求項において、前記切刃部及び台金部の構成
部材の熱処理条件は、焼入れが１２２０〜１２４０℃、
焼もどしが５８０〜６３０℃に設定してなる電動工具の
ソーブレート。 ３、第１請求項又は第２請求項において、前記切刃部の
中心線は、ソーブレートの運動方向の中心線に対し２〜
３．３°の角度に設定し、且つ切刃角度は、切刃中心線
に対し８８〜９５°の角度に設定してなる電動工具のソ
ーブレート。 ４、電動工具のソーブレートにおいて、その切刃部の材
料として、１．１〜１．４％Ｃ、３〜５％Ｃｒ、９〜１
２％Ｃｏ、８〜１２％Ｗ、２〜５％Ｍｏ、３〜４％Ｖと
、残りがＦｅ及び不純物とからなる高速度合金工具鋼を
用い、台金部の材料として０．３〜０．６％Ｃ、０．８
〜１．５％Ｍｏ、１〜２％Ｃｒ、０．１〜０．２％Ｖ、
０．５〜１．５％Ｎｉを添加主成分とする合金鋼を用い
これらの異なる材料の切刃部と台金部を溶接で一体化し
て複合材とし、この複合材に同一の熱処理を施してソー
ブレートを形成することを特徴とする電動工具のソーブ
レートの製造方法。[Claims] 1. In a saw plate for a power tool, the cutting edge portion thereof is:
1.1-1.4% C, 3-5% Cr, 9-12% Co,
8-12% W, 2-5% Mo, 3-4% V and the rest Fe
and impurities, and the base metal part contains 0.3 to 0.6% C, 0.8 to 1.5% Mo, 1
~2%Cr, 0.1~0.2%V, 0.5~1.5%N
A saw plate for a power tool, characterized in that it is made of alloy steel containing i as a main additive component. 2. In the first claim, the heat treatment conditions for the constituent members of the cutting blade portion and the base metal portion include quenching at 1220 to 1240°C;
A sorbate for power tools whose tempering temperature is set at 580-630℃. 3. In the first or second claim, the center line of the cutting edge is 2 to
A saw plate for a power tool having an angle of 3.3 degrees and a cutting edge angle of 88 to 95 degrees with respect to the center line of the cutting edge. 4. In the saw blade of a power tool, the cutting edge material is 1.1-1.4% C, 3-5% Cr, 9-1
A high-speed alloy tool steel consisting of 2% Co, 8-12% W, 2-5% Mo, 3-4% V, and the rest Fe and impurities is used, and the material for the base metal part is 0.3-0. .6%C, 0.8
~1.5%Mo, 1~2%Cr, 0.1~0.2%V,
Using alloy steel containing 0.5 to 1.5% Ni as the main additive, the cutting edge and base metal parts of these different materials are welded together to form a composite material, and this composite material is subjected to the same heat treatment. 1. A method for manufacturing a saw plate for a power tool, comprising: forming a saw plate using a saw plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20712288A JPH0259211A (en) | 1988-08-20 | 1988-08-20 | Saw blade for power tool and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20712288A JPH0259211A (en) | 1988-08-20 | 1988-08-20 | Saw blade for power tool and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0259211A true JPH0259211A (en) | 1990-02-28 |
Family
ID=16534560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20712288A Pending JPH0259211A (en) | 1988-08-20 | 1988-08-20 | Saw blade for power tool and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0259211A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998038346A1 (en) * | 1997-02-26 | 1998-09-03 | The L.S. Starrett Company | Method and installation for tempering metallic strips |
| GB2336851A (en) * | 1997-02-26 | 1999-11-03 | Ls Starrett Company The | Method and installation for tempering metallic strips |
| EP1340830A1 (en) * | 2002-02-09 | 2003-09-03 | Stahlwerk Ergste Westig GmbH | Bimetallic saw band |
| US11577303B2 (en) | 2016-07-28 | 2023-02-14 | Hangzhou Great Star Industrial Co., Ltd. | Manufacturing method of a cutting member |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528918A (en) * | 1975-07-11 | 1977-01-24 | Hitachi Metals Ltd | Metal band saw body with high fatigue strength |
| JPS55119130A (en) * | 1979-03-07 | 1980-09-12 | Hitachi Ltd | Saw blade with excellent durability and its manufacture |
| JPS5776171A (en) * | 1980-10-28 | 1982-05-13 | Hitachi Metals Ltd | Body material for metal band saw excellent in fatigue strength and weldability |
| JPS637351A (en) * | 1986-06-27 | 1988-01-13 | Daido Steel Co Ltd | Body material for metal band saw |
-
1988
- 1988-08-20 JP JP20712288A patent/JPH0259211A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528918A (en) * | 1975-07-11 | 1977-01-24 | Hitachi Metals Ltd | Metal band saw body with high fatigue strength |
| JPS55119130A (en) * | 1979-03-07 | 1980-09-12 | Hitachi Ltd | Saw blade with excellent durability and its manufacture |
| JPS5776171A (en) * | 1980-10-28 | 1982-05-13 | Hitachi Metals Ltd | Body material for metal band saw excellent in fatigue strength and weldability |
| JPS637351A (en) * | 1986-06-27 | 1988-01-13 | Daido Steel Co Ltd | Body material for metal band saw |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998038346A1 (en) * | 1997-02-26 | 1998-09-03 | The L.S. Starrett Company | Method and installation for tempering metallic strips |
| GB2336851A (en) * | 1997-02-26 | 1999-11-03 | Ls Starrett Company The | Method and installation for tempering metallic strips |
| EP1340830A1 (en) * | 2002-02-09 | 2003-09-03 | Stahlwerk Ergste Westig GmbH | Bimetallic saw band |
| US11577303B2 (en) | 2016-07-28 | 2023-02-14 | Hangzhou Great Star Industrial Co., Ltd. | Manufacturing method of a cutting member |
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