JPH04331070A - Surface treating method of tool - Google Patents
Surface treating method of toolInfo
- Publication number
- JPH04331070A JPH04331070A JP3125447A JP12544791A JPH04331070A JP H04331070 A JPH04331070 A JP H04331070A JP 3125447 A JP3125447 A JP 3125447A JP 12544791 A JP12544791 A JP 12544791A JP H04331070 A JPH04331070 A JP H04331070A
- Authority
- JP
- Japan
- Prior art keywords
- tool
- abrasive
- abrasive material
- pressure
- hardness
- 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
- 238000000034 method Methods 0.000 title claims description 28
- 239000003082 abrasive agent Substances 0.000 claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 238000004381 surface treatment Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- 238000003754 machining Methods 0.000 description 21
- 238000005422 blasting Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 238000005520 cutting process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical group [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、ドリルや各種のスロ
ーアウエイチツプ等の各種の工具に用いられて当該切刃
の寿命を延す工具の表面処理方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for surface treatment of tools used in various tools such as drills and various throw-away tips to extend the life of the cutting edges.
【０００２】0002
【従来の技術】ドリル、エンドミル、メタルソーあるい
は各種の工具に着脱自在に取付けられるスローアウエイ
チツプ等の各種の切削工具においては、切削効率を向上
させるためにも、その切刃の寿命が長く長期の使用に耐
え得ることが重要である。[Prior Art] In various cutting tools such as drills, end mills, metal saws, and throw-away tips that can be detachably attached to various tools, in order to improve cutting efficiency, the life of the cutting edge is long and long-term maintenance is required. It is important that it can withstand use.
【０００３】このため、従来より超硬合金、ＳＫＨ、Ｓ
ＫＤ、ＳＣＭ等の材質からなるこの種の切削工具におい
ては、切刃部分に局部的に焼結ダイヤモンド等の超高圧
焼結体を組込んだり、特殊な熱処理を施したり、あるい
は炭化チタンや窒化チタン等のコーティング処理を施し
たりなどすることにより、当該切刃部分の耐摩耗性を向
上させて長寿命化を図っている。For this reason, conventionally, cemented carbide, SKH, S
In this type of cutting tool made of materials such as KD and SCM, ultra-high pressure sintered bodies such as sintered diamond are locally incorporated into the cutting edge, special heat treatment is applied, or titanium carbide or nitride is used. By applying coating treatment with titanium or the like, the wear resistance of the cutting edge portion is improved and its lifespan is extended.
【０００４】0004
【発明が解決しようとする課題】しかしながら、このよ
うな従来の工具の処理方法のうち、超高圧焼結体を用い
たものにあっては、寿命は長期化するものの当該超高圧
焼結体が極めて高価であることから工具自体の製品単価
の高騰化を招いて、けっきょく大きな経済的効果を得る
ことができないという問題がある。また、熱処理やコー
ティングを施すものにあっては、それぞれの処理のため
に複雑かつ高価な処理設備を必要とするうえに、さらに
処理技術の習熟にも多大の労力を要するという問題があ
る。[Problems to be Solved by the Invention] However, among these conventional tool processing methods, those using ultra-high pressure sintered bodies have a long service life, but the ultra-high pressure sintered bodies are Since the tool is extremely expensive, the unit price of the tool itself rises, resulting in a problem in that no significant economic effects can be obtained. Furthermore, in the case of products that undergo heat treatment or coating, there is a problem in that not only complicated and expensive treatment equipment is required for each treatment, but also a great deal of effort is required to learn the treatment techniques.
【０００５】そこで、本発明者等は、比較的簡単な処理
で上記工具類の寿命を長期化すべく鋭意研究を重ねた結
果、球状の研磨材をいわゆるブラスト法を用いて工具の
表面に圧力が３〜１０ｋｇ／ｃｍ２ の範囲の気体流と
ともに高速で吹き付けると、この結果工具表面に発生す
る応力および熱により工具表面の組織が微細化、緻密化
して工具の寿命が飛躍的に向上する、という知見を得る
に至った。[0005]The inventors of the present invention have conducted extensive research in order to extend the life of the above-mentioned tools with a relatively simple process. As a result, the present inventors applied pressure to the surface of the tool by using a so-called blasting method with a spherical abrasive material. Knowledge that when sprayed at high speed with a gas flow in the range of 3 to 10 kg/cm2, the resulting stress and heat generated on the tool surface make the structure of the tool surface finer and denser, dramatically improving tool life. I ended up getting this.
【０００６】この発明は、上記知見に基づいてなされた
もので、製品単価の高騰化や、複雑な装置を必要とする
ことなく、簡便に工具寿命を長期化することができる工
具の表面処理方法を提供することを目的とするものであ
る。The present invention was made based on the above knowledge, and provides a tool surface treatment method that can easily extend the tool life without increasing the unit price of the product or requiring complicated equipment. The purpose is to provide the following.
【０００７】[0007]
【課題を解決するための手段】この発明の工具の表面処
理方法は、工具の表面にゲージ圧で３〜１０ｋｇ／ｃｍ
２の範囲の気体流とともに球状の研磨材を吹きつけるこ
とを特徴とするものである。[Means for Solving the Problems] The tool surface treatment method of the present invention provides a method for treating the surface of a tool with a gauge pressure of 3 to 10 kg/cm.
This method is characterized by spraying a spherical abrasive material together with a gas flow in a range of 2.
【０００８】ここで、上記研磨材としては、出来得るだ
け真球に近いものを用いるのが好ましく、鋼球、ステン
レス球、ガラス球もしくはセラミックス球またはこれら
の混合物からなる球状体であることが特に好適である。
また、上記研磨材の粒度としては、ＪＩＳＲ−６００１
−１９７３に規定される８０〜８００メッシュであるこ
とが好ましい。[0008] Here, as the abrasive material, it is preferable to use something as close to a true sphere as possible, and in particular, a spherical body made of steel balls, stainless steel balls, glass balls, ceramic balls, or a mixture thereof is preferable. suitable. In addition, the particle size of the abrasive material is JISR-6001
-1973, preferably 80 to 800 mesh.
【０００９】研磨材を気体流とともに吹き付ける方法と
しては、各種のブラスト法を用いることができるが、乾
式ブラスト法が最も適している。上記気体流としては、
通常の圧縮空気を使用すれば経済的である。また、気体
流の圧力は、上述したようにゲージ圧で３〜１０ｋｇ／
ｃｍ２であり、この際のノズルからの圧縮気体の噴射速
度は８０〜２４０ｍ／ｓｅｃ．である。以上のような、
吹き付けに使用される研磨材の材質、硬度、粒度、圧力
等は、処理しようとする工具の材質、硬度、形状、表面
荒さ、目的寿命等により適宜選択されるべきものである
。[0009] Various types of blasting methods can be used to spray the abrasive material together with a gas flow, but the dry blasting method is most suitable. The above gas flow is
It is economical to use ordinary compressed air. In addition, the pressure of the gas flow is 3 to 10 kg/10 kg/g in gauge pressure as mentioned above.
cm2, and the injection speed of the compressed gas from the nozzle at this time is 80 to 240 m/sec. It is. As above,
The material, hardness, particle size, pressure, etc. of the abrasive used for spraying should be appropriately selected depending on the material, hardness, shape, surface roughness, intended life, etc. of the tool to be treated.
【００１０】0010
【作用】上記構成による表面処理を施すと、工具の表面
内部に応力および熱が発生し、これにより表面組織が微
細化、緻密化して金属疲労および高温脆性に対する耐久
性が増加する。[Operation] When the surface treatment with the above structure is applied, stress and heat are generated inside the surface of the tool, thereby making the surface structure finer and denser, thereby increasing the durability against metal fatigue and high-temperature embrittlement.
【００１１】[0011]
【実施例】以下、図面を参照してこの発明を詳細に説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
【００１２】図１は、この発明に係る工具の表面処理方
法を実施する際に用いられるブラスト装置の一例を示す
ものであり、図中符号１は有底筒状に構成された本体で
ある。この本体１の内部には、モータ２が、その回転軸
を上方に向けて配置されており、この回転軸に、表面処
理の対象となる工具Ｗが着脱自在に取り付けられるよう
になっている。FIG. 1 shows an example of a blasting device used in carrying out the method for surface treatment of tools according to the present invention, and reference numeral 1 in the figure indicates a main body constructed in the shape of a cylinder with a bottom. Inside the main body 1, a motor 2 is arranged with its rotating shaft facing upward, and a tool W to be subjected to surface treatment can be detachably attached to this rotating shaft.
【００１３】前記本体１の上部には、内部に研磨材Ｐを
充填するタンク３が取り付けられている。このタンク３
の内部には、後述する回収パイプ９からタンク３内に供
給される研磨材Ｐの流れを規制する断面アングル状の規
制板３ａが設けられている。また、前記タンク３には、
タンク３の内部に発生した粉塵を回収する吸引ポンプ（
図示せず）が、タンク３の上部に連通されたダクトホー
ス３ｂを介して取り付けられている。[0013] A tank 3 in which the abrasive material P is filled is attached to the upper part of the main body 1. This tank 3
A regulating plate 3a having an angled cross section is provided inside the tank 3 to regulate the flow of the abrasive P supplied into the tank 3 from a recovery pipe 9, which will be described later. Moreover, in the tank 3,
A suction pump (
(not shown) is attached to the upper part of the tank 3 via a duct hose 3b that communicates with the upper part of the tank 3.
【００１４】前記タンク３の下部は、下方に凸をなす漏
斗状に形成されており、その下端部には、内部に研磨材
Ｐを挿通させる内径を有する、可撓性を備えたパイプ４
の一端側が取り付けられている。このパイプ４の他端側
は、前記工具Ｗに向けて配設されており、このパイプ４
を作業者が適宜曲げることにより、任意の方向から研磨
材Ｐを工具Ｗに吹きつけることができるように構成され
ている。The lower part of the tank 3 is formed into a funnel shape convex downward, and at its lower end there is a flexible pipe 4 having an inner diameter through which the abrasive material P is inserted.
One end of the is attached. The other end side of this pipe 4 is arranged toward the tool W, and this pipe 4
The abrasive material P can be sprayed onto the tool W from any direction by bending the tool W as appropriate by the operator.
【００１５】前記パイプ４には、バルブ６によって開閉
されるパイプ５を介して圧縮空気源が接続されている。
前記バルブ６には、その開閉動作を制御するフットスイ
ッチ７が接続されている。A compressed air source is connected to the pipe 4 via a pipe 5 which is opened and closed by a valve 6. A foot switch 7 is connected to the valve 6 to control its opening/closing operation.
【００１６】前記モータ２の下方には、下方に凸をなす
漏斗状に形成されたホッパ８が、その周縁を前記本体１
の内周面に密着させて取り付けられている。Below the motor 2, there is a hopper 8 formed in the shape of a funnel that is convex downward, and its peripheral edge is connected to the main body 1.
It is attached in close contact with the inner peripheral surface of the
【００１７】前記ホッパ８の下端部には、回収パイプ９
の一端が取り付けられている。この回収パイプ９の他端
は、前記タンク３の上部に連通されている。A recovery pipe 9 is provided at the lower end of the hopper 8.
One end of the is attached. The other end of the recovery pipe 9 is communicated with the upper part of the tank 3.
【００１８】なお、図中符号１０は、タンク３からパイ
プ４への研磨材Ｐの供給量を調整する調整器である。Note that reference numeral 10 in the figure is a regulator for adjusting the amount of abrasive P supplied from the tank 3 to the pipe 4.
【００１９】つぎに、前記構成を有するブラスト装置の
動作について説明する。Next, the operation of the blasting device having the above configuration will be explained.
【００２０】まず、タンク３の内部に所定量の研磨材Ｐ
を充填する。ついで、フットスイッチ７を操作してバル
ブ６を開状態とし、パイプ５の内部に圧縮空気を送り込
んでおく。ついで、調整器１０を操作して研磨材Ｐをタ
ンク３からパイプ４に供給する。First, a predetermined amount of abrasive P is placed inside the tank 3.
Fill it. Next, the foot switch 7 is operated to open the valve 6 and compressed air is sent into the pipe 5. Next, the regulator 10 is operated to supply the abrasive material P from the tank 3 to the pipe 4.
【００２１】このようにして、圧縮空気の圧力によって
、パイプ４の他端側から研磨材Ｐを工具Ｗに対して吹き
つけることができる。[0021] In this manner, the abrasive P can be blown against the tool W from the other end of the pipe 4 by the pressure of the compressed air.
【００２２】吹きつけられた研磨材Ｐは、ホッパ８の内
部に収納され、本体１の内部とタンク３の内部との圧力
差によって回収パイプ９の内部を移動・通過してタンク
３の内部に回収される。このようにして、ふたたびタン
ク３の内部に研磨材Ｐを充填でき、工具Ｗに対する吹き
つけ作業を循環して行うことができる。また、このとき
、研磨材Ｐまたは工具Ｗから発生した粉塵については、
ダクトホース３ｂを介して吸引ポンプにより外部に排出
することができる。The blown abrasive material P is stored inside the hopper 8, moves and passes through the recovery pipe 9 due to the pressure difference between the inside of the main body 1 and the inside of the tank 3, and enters the inside of the tank 3. It will be collected. In this way, the inside of the tank 3 can be filled with the abrasive material P again, and the spraying work on the tool W can be performed in a cyclical manner. Also, at this time, regarding dust generated from the abrasive material P or tool W,
It can be discharged to the outside by a suction pump via the duct hose 3b.
【００２３】また、前記実施例のブラスト装置によれば
、調整器１０およびバルブ６の開度を調整することによ
り、気体流の圧力や研磨材Ｐの吹きつけ量等を調整する
ことができる。Furthermore, according to the blasting apparatus of the embodiment described above, by adjusting the opening degrees of the regulator 10 and the valve 6, the pressure of the gas flow, the amount of the abrasive P sprayed, etc. can be adjusted.
【００２４】（実施例１および比較例１）前記したブラ
スト装置を用いて、下記の試験条件に基づいて工具の表
面処理を行った。(Example 1 and Comparative Example 1) Using the above-mentioned blasting apparatus, a tool was surface-treated under the following test conditions.
【００２５】
研磨材Ｐの材質；セラミック入り球状ガラスビーズ研磨
材Ｐの粒度；４００メッシュ
研磨材Ｐの硬度；モース硬度計における硬度７圧縮空気
源からの空気送り量；１Ｎｍ３／分圧力；ゲージ圧で６
．５ｋｇ／ｍ２
パイプ４の内径；直径９ｍｍ
研磨材Ｐの噴射速度；１６０ｍ／秒
ノズル４の他端から工具Ｗまでの距離；１００〜１５０
ｍｍ
工具Ｗの種類；直径１０ｍｍ×長さ１００ｍｍの超硬ド
リル
モータ２の回転軸の１回転当り所要時間；１０秒／１回
転Material of abrasive P; Ceramic filled spherical glass beads Particle size of abrasive P; 400 mesh Hardness of abrasive P: Hardness 7 on Mohs hardness scale Amount of air fed from compressed air source: 1 Nm3/min pressure; Gauge pressure So 6
．． 5kg/m2 Inner diameter of pipe 4: Diameter 9mm Injection speed of abrasive P: 160m/sec Distance from other end of nozzle 4 to tool W: 100 to 150
mm Type of tool W: Time required per rotation of the rotating shaft of the carbide drill motor 2 with a diameter of 10 mm and a length of 100 mm: 10 seconds/1 rotation
【００２６】実施例１の方法においては、工具Ｗを、モ
ータ２の軸方向に沿いかつ、先端を上方に向けて取り付
け、研磨材Ｐを、工具Ｗの側方より２０秒間吹きつけた
後、パイプ４を移動させて工具Ｗの上方より１０秒間吹
きつけた。ここで、吹きつけに際しては、パイプ４の他
端を工具Ｗの長さ方向または径方向に沿って上下させる
ことにより、偏り無く研磨材Ｐを工具Ｗに吹きつけるよ
うにした。In the method of Embodiment 1, the tool W is attached along the axial direction of the motor 2 with the tip facing upward, and after spraying the abrasive material P from the side of the tool W for 20 seconds, The pipe 4 was moved and sprayed from above the tool W for 10 seconds. Here, when spraying, the other end of the pipe 4 was moved up and down along the length direction or radial direction of the tool W, so that the abrasive material P was evenly sprayed onto the tool W.
【００２７】前記試験条件による表面加工終了後、工具
Ｗを検査したところ、形状や寸法精度等についての変化
は無く、また、工具Ｗの表面温度は約５０℃となってい
た。After the surface machining under the above test conditions was completed, the tool W was inspected and found that there was no change in shape or dimensional accuracy, and the surface temperature of the tool W was approximately 50°C.
【００２８】また、工具Ｗの表面部分における金属組織
を検査したところ、図２に示すような組織となっていた
。この図２において、符号１１はコバルト部分、符号１
２は炭素部分、符号１３はタングステン部分をそれぞれ
示している。これに対し、加工前の状態における工具Ｗ
の金属組織を図３に示す。両者の対比から明らかなよう
に、本実施例の方法によって加工した工具Ｗにおいては
、その表面から５〜１０μｍの範囲において、コバルト
部分の結晶組織が微細化されていた。Further, when the metal structure of the surface portion of the tool W was inspected, it was found to have a structure as shown in FIG. In this FIG. 2, code 11 is a cobalt part, code 1
Reference numeral 2 indicates a carbon portion, and reference numeral 13 indicates a tungsten portion. On the other hand, the tool W in the state before machining
Figure 3 shows the metallographic structure of . As is clear from the comparison between the two, in the tool W processed by the method of this example, the crystal structure of the cobalt portion was refined within a range of 5 to 10 μm from the surface.
【００２９】前記実施例１の方法により表面加工した工
具Ｗを用いて、ダイカスト法によって製造したアルミ合
金（ＡＤＣ１１）製の試料に対し、直径１０ｍｍ、深さ
３０ｍｍの大きさの穴を多数形成することにより、耐久
性試験を行った。Using the tool W whose surface was processed by the method of Example 1, a large number of holes with a diameter of 10 mm and a depth of 30 mm were formed in a sample made of aluminum alloy (ADC11) manufactured by die casting. A durability test was conducted.
【００３０】本実施例に係る工具Ｗによれば、平均で約
３００００穴を加工することができ、加工前のものに比
較して寿命を約３倍に延長することができた。According to the tool W of this example, it was possible to machine about 30,000 holes on average, and the life of the tool W could be extended about three times as compared to the tool before machining.
【００３１】これに対して、比較例１として、本実施例
による加工を行う前の状態における工具（ドリル）を用
いて、本実施例のものと同一条件において耐久性試験を
行った。この比較例１のものでは、加工寿命が平均で約
１００００穴であり、本実施例のものに比較して寿命が
短いものであった。On the other hand, as Comparative Example 1, a durability test was conducted under the same conditions as that of this example using a tool (drill) in a state before being processed according to this example. In Comparative Example 1, the machining life was approximately 10,000 holes on average, which was shorter than that in this example.
【００３２】（実施例２および比較例２）実施例２とし
て、本実施例に係るブラスト装置を用いて、下記の試験
条件に基づいて工具の表面処理を行った。他の条件は、
前記実施例１と同様なので記載を省略する。(Example 2 and Comparative Example 2) As Example 2, a tool was surface-treated using the blasting apparatus according to this example under the following test conditions. Other conditions are
Since this is the same as in Example 1, the description will be omitted.
【００３３】研磨材Ｐの流度；３００メッシュ工具Ｗの
種類；直径８ｍｍ×長さ１００ｍｍであるＳＫＨ５１ハ
イスドリル
モータ２の回転軸の１回転当り所要時間；１０秒／１回
転Flow rate of abrasive P: 300 mesh Type of tool W: Time required per rotation of the rotating shaft of SKH51 high speed steel drill motor 2, which is 8 mm in diameter x 100 mm in length: 10 seconds/1 rotation
【００３４】実施例２においては、実施例１と同様にし
て工具Ｗをモータ２に取り付け、研磨材Ｐを、工具Ｗの
側方より３０秒間吹きつけた後、パイプ４を移動させて
工具Ｗの上方より１０秒間吹きつけた（図４）。In the second embodiment, the tool W is attached to the motor 2 in the same manner as in the first embodiment, and after spraying the abrasive material P from the side of the tool W for 30 seconds, the pipe 4 is moved to remove the tool W. It was sprayed from above for 10 seconds (Figure 4).
【００３５】前記試験条件による表面加工終了後、工具
Ｗを検査したところ、形状や寸法精度等についての変化
は無く、また、工具Ｗの表面温度は約３０℃となってい
た。After the surface machining under the above test conditions was completed, the tool W was inspected, and it was found that there was no change in shape or dimensional accuracy, and the surface temperature of the tool W was about 30°C.
【００３６】また、工具Ｗの表面部分における金属組織
を検査したところ、図５に示すような組織となっていた
。これに対し、加工前の状態における工具Ｗの金属組織
を図６に示す。両者の対比から明らかなように、本実施
例の方法によって加工した工具Ｗにおいては、その表面
から５〜１０μｍの範囲において、金属組織が微細化さ
れていた。[0036] Furthermore, when the metallographic structure of the surface portion of the tool W was inspected, it was found to have a structure as shown in FIG. On the other hand, FIG. 6 shows the metallographic structure of the tool W in the state before machining. As is clear from the comparison between the two, in the tool W processed by the method of this example, the metal structure was refined within a range of 5 to 10 μm from the surface.
【００３７】前記実施例２の方法により表面加工した工
具Ｗによって、鍛造によって製造したＳ４５Ｃ炭素鋼製
の試料に対し、直径８ｍｍ、深さ２０ｍｍの大きさの穴
を多数形成することにより、耐久性試験を行った。Durability was improved by forming a number of holes with a diameter of 8 mm and a depth of 20 mm in a sample made of S45C carbon steel manufactured by forging using the tool W whose surface was processed by the method of Example 2. We conducted a test.
【００３８】本実施例に係る工具Ｗによれば、平均で約
５０００穴を加工することができ、加工前のものに比較
して寿命を約１０倍に延長することができた。According to the tool W of this example, it was possible to machine about 5,000 holes on average, and the service life was extended about 10 times compared to the tool before machining.
【００３９】また、本実施例の工具Ｗの表面硬度を計測
したところ、ＨＲＣ６５であり、加工前のものに比較し
て表面硬度を向上させることができた。Furthermore, when the surface hardness of the tool W of this example was measured, it was HRC65, and the surface hardness could be improved compared to the tool before machining.
【００４０】これに対して、比較例２として、本実施例
による加工を行う前の状態における工具（ドリル）を用
いて、本実施例のものと同一条件において耐久性試験を
行った。この比較例２のものでは、加工寿命が平均で約
５００穴であり、本実施例のものに比較して寿命が短い
ものであった。On the other hand, as Comparative Example 2, a durability test was conducted under the same conditions as that of this example using a tool (drill) in a state before being processed according to this example. In Comparative Example 2, the machining life was approximately 500 holes on average, which was shorter than that in this example.
【００４１】また、比較例２の工具Ｗについて表面硬度
を計測したところ、ＨＲＣ６３であり、実施例２のもの
に比較して硬度が低いものであった。Further, when the surface hardness of the tool W of Comparative Example 2 was measured, it was HRC63, which was lower than that of Example 2.
【００４２】（実施例３および比較例３）実施例３とし
て、本実施例に係るブラスト装置を用いて、下記の試験
条件に基づいて工具の表面処理を行った。他の条件は、
前記実施例１と同様なので記載を省略する。(Example 3 and Comparative Example 3) As Example 3, a tool was surface treated based on the following test conditions using the blasting apparatus according to this example. Other conditions are
Since this is the same as in Example 1, the description will be omitted.
【００４３】研磨材Ｐの流度；３００メッシュ研磨材Ｐ
の硬度；モース硬度計における硬度６工具Ｗの種類；直
径２５０ｍｍ×厚さ１ｍｍであるＨＳＳメタルソー
モータ２の回転軸の１回転当り所要時間；２０秒／１回
転Flow rate of abrasive P; 300 mesh abrasive P
Hardness: Hardness 6 on Mohs hardness scale Type of tool W: Time required per rotation of the rotating shaft of HSS metal saw motor 2, which is 250 mm in diameter x 1 mm in thickness: 20 seconds/1 rotation
【００４４】前記構成の工具Ｗを、図７に示すように、
モータ２の回転軸に直交して取り付け、工具Ｗの厚さ方
向上下よりそれぞれ６０秒間づつ（図７）研磨材Ｐを吹
きつけ、ついで、工具Ｗの側方より、モータ２の回転軸
から工具Ｗの一端側（図８中上端側）にやや傾斜した方
向に向けて６０秒間吹きつけ、ついで、工具Ｗの他端側
（図８中下端側）にやや傾斜した方向に向けて６０秒間
吹きつけた。The tool W having the above configuration is as shown in FIG.
Install the motor 2 perpendicularly to the rotation axis, spray the abrasive P from the top and bottom of the tool W for 60 seconds each in the thickness direction (Fig. 7), and then remove the tool from the rotation axis of the motor 2 from the side of the tool W. Blow for 60 seconds in a slightly inclined direction toward one end of the tool W (upper end in FIG. 8), then spray for 60 seconds in a slightly inclined direction toward the other end of the tool W (lower end in FIG. 8). Wearing.
【００４５】前記試験条件による表面加工終了後、工具
Ｗを検査したところ、形状や寸法精度等についての変化
は無く、また、工具Ｗの表面温度は約３０℃となってい
た。After the surface machining under the above test conditions was completed, the tool W was inspected and found that there was no change in shape or dimensional accuracy, and the surface temperature of the tool W was about 30°C.
【００４６】また、工具Ｗの表面部分における金属組織
を検査したところ、図９に示すような組織となっていた
。これに対し、加工前の状態における工具Ｗの金属組織
を図１０に示す。両者の対比から明らかなように、本実
施例の方法によって加工した工具Ｗにおいては、その表
面から５〜１０μｍの範囲において、金属組織が微細化
されていた。[0046] Furthermore, when the metallographic structure of the surface portion of the tool W was inspected, it was found to have a structure as shown in FIG. On the other hand, FIG. 10 shows the metallographic structure of the tool W in the state before machining. As is clear from the comparison between the two, in the tool W processed by the method of this example, the metal structure was refined within a range of 5 to 10 μm from the surface.
【００４７】前記実施例３の方法により表面加工した工
具Ｗによって、高速度鋼（ＳＫＨ）製の棒状の試料を幅
方向に切断することにより、耐久性試験を行った。A durability test was conducted by cutting a rod-shaped sample made of high-speed steel (SKH) in the width direction using the tool W whose surface was processed by the method of Example 3.
【００４８】本実施例に係る工具Ｗによれば、平均で約
１０００回試料を切断することができ、加工前のものに
比較して寿命を約２倍に延長することができた。According to the tool W according to this example, the sample could be cut approximately 1000 times on average, and the life span could be extended approximately twice as compared to the tool before machining.
【００４９】また、本実施例の工具Ｗの表面硬度を計測
したところ、ＨＲＣ６４であり、加工前のものに比較し
て表面硬度を向上させることができた。Further, when the surface hardness of the tool W of this example was measured, it was HRC64, and the surface hardness could be improved compared to the tool before processing.
【００５０】これに対して、比較例３として、本実施例
による加工を行う前の状態における工具（ドリル）を用
いて、本実施例のものと同一条件において耐久性試験を
行った。この比較例３のものでは、加工寿命が平均で約
５００回であり、本実施例のものに比較して寿命が短い
ものであった。On the other hand, as Comparative Example 3, a durability test was conducted under the same conditions as that of this example using a tool (drill) in a state before being processed according to this example. In Comparative Example 3, the machining life was approximately 500 times on average, which was shorter than that in this example.
【００５１】また、比較例３の工具Ｗについて表面硬度
を計測したところ、ＨＲＣ６２であり、実施例３のもの
に比較して硬度が低いものであった。Further, when the surface hardness of the tool W of Comparative Example 3 was measured, it was HRC62, which was lower than that of Example 3.
【００５２】[0052]
【発明の効果】請求項１に係る工具の表面処理方法によ
れば、工具の表面に、圧力が３〜１０ｋｇ／ｃｍ２の範
囲の気体流とともに球状の研磨材を吹きつける構成とし
たので、簡便な操作によって工具表面の硬度を高めてそ
の寿命を向上させることができ、機械加工作業の効率を
向上させることができる。According to the method for surface treatment of a tool according to claim 1, the spherical abrasive material is sprayed onto the surface of the tool together with a gas flow having a pressure in the range of 3 to 10 kg/cm2, so that the surface treatment method is simple. This operation can increase the hardness of the tool surface and extend its life, which can improve the efficiency of machining operations.
【図１】本発明に係る工具の加工方法の実施例に使用す
るブラスト装置の概略的構成を示す縦断面図である。FIG. 1 is a vertical sectional view showing a schematic configuration of a blasting device used in an embodiment of the tool machining method according to the present invention.
【図２】実施例１の加工方法によって加工した工具の表
面部分の金属組織を示す断面図である。FIG. 2 is a cross-sectional view showing the metal structure of the surface portion of a tool machined by the processing method of Example 1.
【図３】加工前の工具の表面部分の金属組織を示す断面
図である。FIG. 3 is a cross-sectional view showing the metal structure of the surface portion of the tool before machining.
【図４】実施例２に係る工具の加工方法を示すもので、
ブラスト装置の要部を示す図である。FIG. 4 shows a tool machining method according to Example 2,
FIG. 2 is a diagram showing the main parts of a blasting device.
【図５】実施例２の加工方法によって加工した工具の表
面部分の金属組織を示す断面図である。FIG. 5 is a cross-sectional view showing the metallographic structure of the surface portion of a tool machined by the processing method of Example 2.
【図６】加工前の工具の表面部分の金属組織を示す断面
図である。FIG. 6 is a cross-sectional view showing the metal structure of the surface portion of the tool before machining.
【図７】実施例３に係る工具の加工方法を示すもので、
ブラスト装置の要部を示す図である。FIG. 7 shows a tool machining method according to Example 3,
FIG. 2 is a diagram showing the main parts of a blasting device.
【図８】実施例３に係る工具の加工方法を示すもので、
ブラスト装置の要部を示す図である。FIG. 8 shows a tool machining method according to Example 3,
FIG. 2 is a diagram showing the main parts of a blasting device.
【図９】実施例３の加工方法によって加工した工具の表
面部分の金属組織を示す断面図である。9 is a cross-sectional view showing the metallographic structure of the surface portion of a tool machined by the processing method of Example 3. FIG.
【図１０】加工前の工具の表面部分の金属組織を示す断
面図である。FIG. 10 is a cross-sectional view showing the metal structure of the surface portion of the tool before machining.
Ｐ 研磨材 Ｗ 工具 P Abrasive material W Tools
Claims (3)
ｃｍ２の範囲の気体流とともに球状の研磨材を吹きつけ
ることを特徴とする工具の表面処理方法。[Claim 1] A pressure of 3 to 10 kg/kg is applied to the surface of the tool.
A method for surface treatment of tools, characterized by spraying a spherical abrasive with a gas flow in the cm2 range.
ガラス球もしくはセラミックス球またはこれらの複合物
からなる球状体であることを特徴とする請求項１に記載
の工具の表面処理方法。2. The abrasive material includes steel balls, stainless steel balls,
2. The method for surface treatment of a tool according to claim 1, wherein the spherical body is a glass sphere, a ceramic sphere, or a composite thereof.
ッシュであることを特徴とする請求項１または請求項２
に記載の工具の表面処理方法。3. The particle size of the abrasive material is 80 to 800 mesh.
The method for surface treatment of tools described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12544791A JP3176953B2 (en) | 1991-04-26 | 1991-04-26 | Tool surface treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12544791A JP3176953B2 (en) | 1991-04-26 | 1991-04-26 | Tool surface treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04331070A true JPH04331070A (en) | 1992-11-18 |
| JP3176953B2 JP3176953B2 (en) | 2001-06-18 |
Family
ID=14910313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12544791A Expired - Lifetime JP3176953B2 (en) | 1991-04-26 | 1991-04-26 | Tool surface treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3176953B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0572399U (en) * | 1992-03-13 | 1993-10-05 | 日本欄罫工業株式会社 | Hollow drill for bookbinding and papermaking |
| EP0687739A1 (en) * | 1994-06-14 | 1995-12-20 | Fuji Kihan Co., Ltd. | Method of making surface-hardened metal shot |
| WO2004103615A1 (en) * | 2003-05-26 | 2004-12-02 | Japan Science And Technology Agency | Method for toughening surface of sintered material cutting tool and sintered material cutting tool having long life |
| EP1570953A1 (en) * | 2002-10-15 | 2005-09-07 | Japan Science and Technology Agency | Method for improving toughness of surface of ceramic and ceramic article |
| JP2007222955A (en) * | 2006-02-21 | 2007-09-06 | Osg Corp | Automatic spiral flute polishing device |
| JPWO2017169303A1 (en) * | 2016-03-31 | 2018-12-27 | 株式会社不二製作所 | Cutting edge structure of machining tool and surface treatment method thereof |
| KR20200059261A (en) * | 2017-11-15 | 2020-05-28 | 아르셀러미탈 | Cutting piece processing method and related equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6020860A (en) * | 1983-07-12 | 1985-02-02 | Hayakawa Rubber Co Ltd | Sand blast carving method |
| JPS63207563A (en) * | 1987-02-23 | 1988-08-26 | Fuji Seisakusho:Kk | Grinding/polishing/cleaning method for die by electric discharge machine |
| JPH01112079A (en) * | 1987-10-23 | 1989-04-28 | Teikoku Piston Ring Co Ltd | Chrome-plated cylinder |
| JPH02190263A (en) * | 1989-01-17 | 1990-07-26 | Tokyo Netsushori Kogyo Kk | Shot peening method and device therefor |
-
1991
- 1991-04-26 JP JP12544791A patent/JP3176953B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6020860A (en) * | 1983-07-12 | 1985-02-02 | Hayakawa Rubber Co Ltd | Sand blast carving method |
| JPS63207563A (en) * | 1987-02-23 | 1988-08-26 | Fuji Seisakusho:Kk | Grinding/polishing/cleaning method for die by electric discharge machine |
| JPH01112079A (en) * | 1987-10-23 | 1989-04-28 | Teikoku Piston Ring Co Ltd | Chrome-plated cylinder |
| JPH02190263A (en) * | 1989-01-17 | 1990-07-26 | Tokyo Netsushori Kogyo Kk | Shot peening method and device therefor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0572399U (en) * | 1992-03-13 | 1993-10-05 | 日本欄罫工業株式会社 | Hollow drill for bookbinding and papermaking |
| EP0687739A1 (en) * | 1994-06-14 | 1995-12-20 | Fuji Kihan Co., Ltd. | Method of making surface-hardened metal shot |
| EP1570953A1 (en) * | 2002-10-15 | 2005-09-07 | Japan Science and Technology Agency | Method for improving toughness of surface of ceramic and ceramic article |
| EP1570953A4 (en) * | 2002-10-15 | 2007-04-25 | Japan Science & Tech Agency | Method for improving toughness of surface of ceramic and ceramic article |
| WO2004103615A1 (en) * | 2003-05-26 | 2004-12-02 | Japan Science And Technology Agency | Method for toughening surface of sintered material cutting tool and sintered material cutting tool having long life |
| JP2007222955A (en) * | 2006-02-21 | 2007-09-06 | Osg Corp | Automatic spiral flute polishing device |
| JPWO2017169303A1 (en) * | 2016-03-31 | 2018-12-27 | 株式会社不二製作所 | Cutting edge structure of machining tool and surface treatment method thereof |
| KR20200059261A (en) * | 2017-11-15 | 2020-05-28 | 아르셀러미탈 | Cutting piece processing method and related equipment |
| JP2021502906A (en) * | 2017-11-15 | 2021-02-04 | アルセロールミタル | How to handle cut parts and related equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3176953B2 (en) | 2001-06-18 |
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