JPS61173869A - Manufacture of power hammer drill - Google Patents
Manufacture of power hammer drillInfo
- Publication number
- JPS61173869A JPS61173869A JP19128785A JP19128785A JPS61173869A JP S61173869 A JPS61173869 A JP S61173869A JP 19128785 A JP19128785 A JP 19128785A JP 19128785 A JP19128785 A JP 19128785A JP S61173869 A JPS61173869 A JP S61173869A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- hammer drill
- power hammer
- tool steel
- manufacture
- 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.)
- Granted
Links
Landscapes
- Percussive Tools And Related Accessories (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はコンクリート、石材等の切断、はつり、穿孔に
好適な動力ハンマー錐の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a power hammer drill suitable for cutting, chiseling, and drilling concrete, stone, and the like.
従来、此種ハンマー錐として、第１図に示す如くに普通
鋼製の胴部１の先端に、高速度工具鋼製の刃部２をその
まま摩擦圧接した構成のものが提案されている（実開昭
５０−１４８３０１号）。Conventionally, this type of hammer awl has been proposed, as shown in Fig. 1, in which a blade part 2 made of high-speed tool steel is friction-welded to the tip of a body part 1 made of ordinary steel. (No. 148301, 1973).
しかし乍ら、上記ハンマー錐は熱処理を施してないため
、硬度が十分でなく高速度工具鋼の特性を活用できず、
特に胴部１が刃部２に比べ損耗し易く全体として寿命が
短いという欠点があった・
そこで胴部１と刃部２を熱処理することにより各々の特
性向上を図れるが、熱処理済みのものを互に接合するの
は、材質の相違による内部応力のためその接合部３に亀
裂等が発生し、使用不能になるという問題があった。However, since the hammer drill mentioned above is not heat-treated, it is not hard enough and cannot take advantage of the characteristics of high-speed tool steel.
In particular, the body part 1 has the disadvantage of being more prone to wear and tear than the blade part 2, and has a short overall lifespan.Thus, by heat-treating the body part 1 and the blade part 2, it is possible to improve the characteristics of each. When they are joined together, there is a problem that cracks occur in the joint 3 due to internal stress due to the difference in materials, making it unusable.
本発明は畝上の点に着目してなされたもので、胴部と刃
部との段階的熱処理によって適正な硬度を有し、優れた
耐久性を有する動力ハンマー錐を提供せんとするもので
ある。The present invention was made by focusing on the points on the ridges, and aims to provide a power hammer drill that has appropriate hardness and excellent durability through stepwise heat treatment of the body and blade. be.
次に実施例について説明する。Next, an example will be described.
第２図において、４はＳＣＭ（クロムモリブデン鋼）材
、ＳＮＣＭ にッケルクロムモリブデン鋼）材、炭素鋼
材等より成る胴部で、胴部４の先端に高速度工具ＩＩ（
ハイス）よりなる刃部５を摩擦溶接、圧接溶接等により
接合一体化してハンマー錐Ａを形成するのは、第１図と
同様であるが本発明にあっては、胴部４及び刃部５は各
々最適条件で熱処理を施しである。In Fig. 2, 4 is a body made of SCM (chromium molybdenum steel), SNCM (nickel chrome molybdenum steel), carbon steel, etc. The tip of the body 4 is a high-speed tool II (
It is the same as that shown in FIG. 1 that the blade part 5 made of high-speed steel (high-speed steel) is joined and integrated by friction welding, pressure welding, etc. to form the hammer awl A, but in the present invention, the body part 4 and the blade part 5 are integrated. are heat-treated under optimal conditions.
即ち、第３図（イ）〜（ハ）は上記ハンマー錐Ａの形成
過程を示し、先ず正六角柱状の胴部素材４′の先端に円
柱状の刃部素材５′を接合し、接合部６のバリアを研摩
した後、刃部素材５′を成形加工により所望の形状（図
にあっては４角錐状）に形成する。That is, FIGS. 3(a) to 3(c) show the process of forming the hammer awl A. First, a cylindrical blade material 5' is joined to the tip of a regular hexagonal columnar body material 4', and the joint part is After polishing the barrier 6, the blade material 5' is formed into a desired shape (four pyramidal shape in the figure) by molding.
次いで、胴部素材４′および刃部素材５′の同時熱処理
を行う、この熱処理はソルトバスの様な部分加熱の出来
る炉中で刃部素材５′即ち高速度鋼に通した温度で焼入
及び焼戻しを行う。Next, the body material 4' and the blade material 5' are simultaneously heat-treated. This heat treatment involves quenching the blade material 5', that is, the high-speed steel, in a furnace capable of partial heating, such as a salt bath. and tempering.
焼入れは１２００〜１３００℃で焼戻しは５６０〜５９
０℃で３回行うのが最適である。なお、この焼戻し温度
５６０〜５９０℃で行った場合、炭素工具鋼等では硬度
が低すぎて使用不能となるので、さらに胴部素材４′の
熱処理を同様にしてソルトバスの様な部分加熱の出来る
炉中で行う。この熱処理は焼入温度８３０〜８８０℃、
焼戻しは１８０〜２００℃とするのが最適である。Quenching is 1200-1300℃ and tempering is 560-59℃.
It is optimal to carry out the test three times at 0°C. If tempering is carried out at a temperature of 560 to 590°C, the hardness of carbon tool steel will be too low to be used. Do it in a furnace where possible. This heat treatment has a quenching temperature of 830 to 880℃,
Tempering is optimally carried out at a temperature of 180 to 200°C.
か（て、第２図に示す如き、胴部４と刃部５が各々最適
条件で熱処理されたハンマー錐Ａが得られる。(Thus, a hammer drill A as shown in FIG. 2 is obtained, in which the body portion 4 and the blade portion 5 are each heat-treated under optimal conditions.
本発明によれば、胴部４と刃部５は各々材質の相違を考
慮した最適条件で熱処理しであるため、硬度が高く優れ
た耐久性を有する動力ハンマー錐を提供することができ
る。また、熱処理はソルトバスの使用により設定温度及
びソルトバスへの浸漬時間等の条件を正確に制御するこ
とができ、更に高温処理を要する刃部は胴部と一緒に行
うので、接合部に亀裂が入る等の虞れもなく安定した品
質のものが得られる。According to the present invention, since the body portion 4 and the blade portion 5 are each heat-treated under optimal conditions taking into consideration the difference in material, it is possible to provide a power hammer awl with high hardness and excellent durability. In addition, by using a salt bath, heat treatment conditions such as set temperature and immersion time in the salt bath can be accurately controlled.Furthermore, since the blade section that requires high temperature treatment is performed together with the body section, there is no chance of cracks in the joint. Stable quality products can be obtained without the risk of contamination.
第１図は従来例の説明図、第２図は本発明の一実施例を
示す動力ハンマー錐の側面図、第３図（イ）〜（ハ）は
それぞれ、その形成過程の説明図である。
Ａ−・動力ハンマー錐
４−胴部
５・−・−刃部Fig. 1 is an explanatory diagram of a conventional example, Fig. 2 is a side view of a power hammer drill showing an embodiment of the present invention, and Figs. 3 (a) to (c) are explanatory diagrams of the formation process thereof. . A--Power hammer awl 4-Body section 5--Blade section
Claims (1)
部を接合一体化し刃部を成形加工により所望の形状に形
成した後、胴部及び刃部を高速度工具鋼に適した温度で
、次いで胴部を炭素工具鋼等に適した温度でそれぞれソ
ルトバスの様な部分加熱の出来る手段により熱処理を施
すことを特徴とする動力ハンマー錐の製造方法。A blade made of high-speed tool steel is integrally bonded to the tip of a body made of carbon tool steel, etc., and the blade is formed into the desired shape by molding, and then the body and blade are made of a material suitable for high-speed tool steel. 1. A method for manufacturing a power hammer drill, which comprises heat-treating the body at a temperature suitable for carbon tool steel, etc., using a means capable of partial heating, such as a salt bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19128785A JPS61173869A (en) | 1985-08-30 | 1985-08-30 | Manufacture of power hammer drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19128785A JPS61173869A (en) | 1985-08-30 | 1985-08-30 | Manufacture of power hammer drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61173869A true JPS61173869A (en) | 1986-08-05 |
| JPS6227951B2 JPS6227951B2 (en) | 1987-06-17 |
Family
ID=16272050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19128785A Granted JPS61173869A (en) | 1985-08-30 | 1985-08-30 | Manufacture of power hammer drill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61173869A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01242878A (en) * | 1988-03-24 | 1989-09-27 | Sekisui Chem Co Ltd | Shut off-sealing structure of valve |
| JPH052881U (en) * | 1991-04-30 | 1993-01-19 | 第一熱処理工業株式会社 | Breaker chisel |
-
1985
- 1985-08-30 JP JP19128785A patent/JPS61173869A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01242878A (en) * | 1988-03-24 | 1989-09-27 | Sekisui Chem Co Ltd | Shut off-sealing structure of valve |
| JP2543564B2 (en) * | 1988-03-24 | 1996-10-16 | 積水化学工業株式会社 | Valve closing seal structure |
| JPH052881U (en) * | 1991-04-30 | 1993-01-19 | 第一熱処理工業株式会社 | Breaker chisel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6227951B2 (en) | 1987-06-17 |
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