JPH0741545B2 - Drive bit - Google Patents
Drive bitInfo
- Publication number
- JPH0741545B2 JPH0741545B2 JP61042575A JP4257586A JPH0741545B2 JP H0741545 B2 JPH0741545 B2 JP H0741545B2 JP 61042575 A JP61042575 A JP 61042575A JP 4257586 A JP4257586 A JP 4257586A JP H0741545 B2 JPH0741545 B2 JP H0741545B2
- Authority
- JP
- Japan
- Prior art keywords
- drive bit
- tip
- sintered
- powder
- alloy
- 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.)
- Expired - Fee Related
Links
Landscapes
- Portable Nailing Machines And Staplers (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、圧縮空気等によって往復動するピストンを備
え、釘等の止め金具を衝撃的に打込む動作をする釘打機
等において、耐摩耗性と耐折損性を兼ね備えた長寿命の
ドライブビットに関するものである 〔従来の技術〕 従来、ドライブビットには、合金鋼の一体品（第３
図）、合金鋼製軸部１の先端に超硬合金製チップをろう
付けしたもの（第２図）、実公昭59−24468に開示され
ている合金鋼製軸部１の先端に溶製ハイス（JIS SKH51
等）製チップをろう付けしたもの（第２図）の３種類の
もの等が用いられていた。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a nailing machine or the like that includes a piston that reciprocates by compressed air or the like and that impacts a fastener such as a nail. The present invention relates to a long-life drive bit having both wear resistance and breakage resistance. [Prior Art] Conventionally, a drive bit has been integrally formed of alloy steel (see
Fig.), A tip made of a cemented carbide alloy is brazed to the tip of the alloy steel shank 1 (Fig. 2), and a molten high-speed steel is made at the tip of the alloy steel shank 1 disclosed in JP 59-24468. (JIS SKH51
Etc.), three types of brazing chips (FIG. 2) were used.
〔発明が解決しようとする問題点〕 従来のドライブビットには、各々次のような問題点があ
り、本発明はこれらの問題点を解決し、長寿命のドライ
ブビットを提供することにある。[Problems to be Solved by the Invention] The conventional drive bits have the following problems, respectively, and the present invention solves these problems and provides a long-life drive bit.
（１） 合金鋼の一体品は、耐摩耗性を得るために硬さ
を高くすると軸部あるいはネジ部から折損することがあ
るため、あまり硬さを高くできずせいぜいHRC50程度で
用いられるのが常であり、耐摩耗性は十分でなかった。(1) Since the alloy steel integrated product may break from the shaft part or the screw part if the hardness is increased to obtain wear resistance, the hardness cannot be increased so much and it is used at about H R C50 at most. The wear resistance was not sufficient.
またそれの対策として、JIS SKH51等のハイスを一体で
削り出し、HRC60程度に焼入れをした後先端以外のネジ
部等を部分的にHRC50程度に焼戻し軟化する方法も考え
られたが、この種の材料は高価であり価格に問題があっ
た。As it measures the HSS such as JIS SKH51 shaving integrally, it was considered a method of temper softening partially H R about C50 a threaded portion other than the tip after the hardening to about H R C60 , This kind of material was expensive and there was a price problem.
（２） 上記問題点を解決するために軸部に合金鋼を用
い、先端に超硬合金製チップを接合する方法も考えられ
たが、合金鋼と超硬合金製チップは互いに溶け込まない
ため、接合方法としてはろう付けによる方法しかなく、
これでは接合強度が低いため、釘等の打撃時に超硬合金
製チップが接合部から外れてしまう欠点があった。(2) In order to solve the above problems, a method of using alloy steel for the shaft portion and joining a cemented carbide tip to the tip was also considered, but since the alloy steel and the cemented carbide tip do not melt into each other, The only joining method is brazing,
Since this has a low joint strength, there is a drawback that the cemented carbide tip comes off from the joint when hit with a nail or the like.
（３） 更にそれらの対策として、実公昭59−24468に
開示されるように、合金鋼の先端に溶製ハイス（JIS S
KH51）をろう付けする方法も考えられたが、溶製ハイス
自体の硬さがせいぜいHRC60程度であり、今一つ耐摩耗
性に不満が残ると共に、接合強度も低く、要求を十分満
足するものではなかった。(3) Further, as a countermeasure against them, as disclosed in Japanese Utility Model Publication No. 59-24468, melted high speed steel (JIS S
KH51) but was considered a method of brazing, the hardness of the ingot high-speed steel itself is at most about H R C60, with leaving a dissatisfied one more abrasion resistance, bonding strength is low, sufficiently satisfies the required ones Was not.
本発明は、少なくとも軸部は強い靭性のある合金鋼を用
い、その先端には例えば重量％でC:1.7〜4.0、W:20以
下、Mo:20以下、V:3〜15、Co:15以下、Cr:3〜７、Ｗ＋2
Moで22以上とし、必要に応じ周期律表の第IV a族の炭化
物、窒化物、炭窒化物または酸化物を１種または２種以
上で３〜15％添加したことにより、高硬度が得られる合
金を用いることにより、耐摩耗性を得ようとするもので
ある。The present invention, at least the shaft portion using a strong tough alloy steel, for example, at the tip by weight% C: 1.7 ~ 4.0, W: 20 or less, Mo: 20 or less, V: 3 ~ 15, Co: 15 Below, Cr: 3-7, W + 2
High hardness is obtained by adding Mo to 22 or more, and by adding 3 to 15% of one or more carbides, nitrides, carbonitrides or oxides of Group IVa of the periodic table as needed. It is intended to obtain wear resistance by using the alloy described above.
ただ、硬さにおいては超硬合金製チップも高硬度は得ら
れるが、合金鋼との接合は現在の技術では両者の溶融接
合は不可能であり、ろう付けによる方法しかない。However, in terms of hardness, cemented carbide chips can also obtain high hardness, but joining with alloy steel is not possible with the current technology for fusion bonding of both, and there is only a brazing method.
この場合の接合強度は、ろう材の強度に限定され、本用
途には強度不足となり、使用中に外れてしまい目的を達
することができない。The joint strength in this case is limited to the strength of the brazing filler metal, and the strength is insufficient for this application, and it comes off during use, and the purpose cannot be achieved.
そこで前記成分の高硬度の得られる粉末焼結合金を用
い、具体的には摩擦溶接法または加熱圧接法により軸部
と強固に接合することにより、前記問題点を解決しよう
とするものである。Therefore, an attempt is made to solve the above-mentioned problems by using a powdered sintered alloy of the above components, which has a high hardness, and specifically by firmly joining it to the shaft portion by a friction welding method or a heat pressure welding method.
次に、本発明の実施例を説明する。 Next, examples of the present invention will be described.
軸部１としてJIS SKD61をそれぞれ用い、先端部にそれ
ぞれ表１の化学成分を示す粉末焼結ハイスを摩擦溶接
したもの（本発明品）、従来使用されているJIS SKH51
をろう付けしたもの、摩擦溶接したものおよび超
硬合金製チップをろう付けしたもの、更に合金鋼の一体
品も追加し、各々５本ずつサンプルを試作し、50,000回
の実施テストを行なってみた。JIS SKD61 is used as the shaft 1, and powder-sintered high speed steel having the chemical composition shown in Table 1 is friction welded to the tip (invention product), JIS SKH51 which is conventionally used.
Was brazed, friction welded, cemented carbide chip brazed, and alloy steel integrated product, 5 samples each were made, and the test was conducted 50,000 times. .
その結果を表１に示すが、本発明品は合金鋼一体品に比
較し約６倍、SKH51摩擦溶接品に比較し約２倍の寿命を
示し、溶製ハイスろう付け品や超硬合金製チップろう付
け品のような破損という事故もなく、安定して使用でき
ることがわかる。The results are shown in Table 1. The product of the present invention has a life of about 6 times as long as the alloy steel integrated product and twice as long as that of the SKH51 friction welding product, and made of molten HSS brazed product or cemented carbide. It can be seen that the product can be used stably without the damage such as the chip brazing.
なお、実公昭59−24468に開示された、溶製ハイスのろ
う付け品は、テスト中に５本のうち２本が15,000回以下
で先端が外れてしまったので、比較データを取るため本
発明による摩擦溶接法でもサンプルを作ってテストし
た。なお、表１の本発明品と同様の組合わせで接合法を
加熱圧接法としたものも接合部が50,000回のテストに耐
え、摩耗量はほぼ同様であった。 In the brazing product of molten HSS disclosed in Jitsuho Sho 59-24468, two of the five brazing products had their tips detached less than 15,000 times during the test. A sample was also made and tested by the friction welding method according to. In addition, even in the case where the joining method was the heating and pressure welding method with the same combination as the product of the present invention in Table 1, the joined portion endured the test of 50,000 times and the wear amount was almost the same.
〔発明の効果〕 本発明によれば、先端部を高硬度にし、かつ溶融接合に
しているので、長寿命でしかも安定した釘打機用ドライ
ブビットを供給することができる。[Advantages of the Invention] According to the present invention, since the tip end portion has a high hardness and is fusion-bonded, it is possible to supply a stable drive bit for a nail driver with a long life.
第１図に本発明による形状図、第２図に従来使用されて
いるろう付けによる形状図、第３図に従来使用されてい
る一体品の形状図を示す。FIG. 1 shows a shape drawing according to the present invention, FIG. 2 shows a shape drawing by brazing conventionally used, and FIG. 3 shows a shape drawing of a conventionally used integral product.
Claims (3)
て、軸部は強い靭性のある合金鋼を用い、その先端には
耐摩耗性に優れた粉末焼結ハイスを摩擦溶接法または加
熱圧接法により固着させたことを特徴とするドライブビ
ット。1. A drive bit used in a nailing machine, wherein the shaft portion is made of alloy steel having strong toughness, and the tip thereof is made of powder-sintered high-speed steel having excellent wear resistance by a friction welding method or a heat pressure welding method. A drive bit characterized by being fixed.
でC:1.7〜4.0、W:20以下、Mo:20以下、V:3〜15、Co:15
以下、Cr:3〜７、Ｗ＋2Moで22以上とし、必要に応じ周
期律表の第IV a族の炭化物、窒化物、炭窒化物または酸
化物を１種または２種以上で３〜15％添加した合金であ
ることを特徴とした特許請求の範囲第１項記載のドライ
ブビット。2. The powder-sintered HSS at the tip is substantially wt%.
At C: 1.7 to 4.0, W: 20 or less, Mo: 20 or less, V: 3 to 15, Co: 15
Below, Cr: 3 to 7, W + 2Mo is 22 or more, and if necessary, 3 to 15% of carbides, nitrides, carbonitrides or oxides of Group IVa of the Periodic Table are added in one kind or two kinds or more. The drive bit according to claim 1, wherein the drive bit is an alloy.
としたことを特徴とする特許請求の範囲第１項または第
２項記載のドライブビット。3. The drive bit according to claim 1 or 2, wherein the hardness of the powder-sintered HSS at the tip is HRC68 or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61042575A JPH0741545B2 (en) | 1986-02-27 | 1986-02-27 | Drive bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61042575A JPH0741545B2 (en) | 1986-02-27 | 1986-02-27 | Drive bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62199371A JPS62199371A (en) | 1987-09-03 |
| JPH0741545B2 true JPH0741545B2 (en) | 1995-05-10 |
Family
ID=12639861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61042575A Expired - Fee Related JPH0741545B2 (en) | 1986-02-27 | 1986-02-27 | Drive bit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741545B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0689380B2 (en) * | 1988-12-07 | 1994-11-09 | 東芝機械株式会社 | Corrosion-resistant wear-resistant member and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60178584U (en) * | 1984-05-07 | 1985-11-27 | アマテイ株式会社 | Automatic nailer hammer bit |
-
1986
- 1986-02-27 JP JP61042575A patent/JPH0741545B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62199371A (en) | 1987-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MXPA02010936A (en) | Friction stir weldin of metal matrix composites, ferrous alloys, non ferrous alloys, and superalloys using a superabrasive tool. | |
| EP0284579A1 (en) | Cemented carbide tool | |
| NO164460B (en) | CUTTING SALES. | |
| JPH0530562B2 (en) | ||
| JPH0741545B2 (en) | Drive bit | |
| JPS62183995A (en) | Cobalt base alloy as padding material for guide rail of chain saw | |
| US5271696A (en) | Tool bit for machining materials | |
| CA3140996A1 (en) | Cutting member for a saw chain and method for the production thereof | |
| EP0452550A1 (en) | Wire for dot printer | |
| JP3693268B2 (en) | Drive bit | |
| JP3637375B2 (en) | Manufacturing method of connecting rod | |
| CN213560131U (en) | Numerical control milling cutter with good wear-resisting effect | |
| US20240181546A1 (en) | Reciprocating Saw Blade Having Teeth Formed of a Cemented Ceramic Material Welded to the Body of the Blade | |
| US20070077876A1 (en) | Ceramic tipped tool | |
| CN210798963U (en) | Laser-reinforced coal mining cutting pick | |
| CN1214283A (en) | Inserted cast cutting tooth of coal cutter | |
| CN218252942U (en) | Corrosion-resistant alloy blade | |
| JPS61179847A (en) | High hardness sintered body for cutting | |
| JPS58169492A (en) | Production of outer hook of sewing machine | |
| JPH04217414A (en) | Throw away drill | |
| JPS6246489Y2 (en) | ||
| JPH03131412A (en) | Sintered hard alloy made drill | |
| JPH02258954A (en) | Dot printer wire | |
| SU596403A1 (en) | Buildup charge | |
| JPH1148157A (en) | Driver bit for nailing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |