JP4706968B2 - Shot peening equipment - Google Patents
Shot peening equipment Download PDFInfo
- Publication number
- JP4706968B2 JP4706968B2 JP2005371702A JP2005371702A JP4706968B2 JP 4706968 B2 JP4706968 B2 JP 4706968B2 JP 2005371702 A JP2005371702 A JP 2005371702A JP 2005371702 A JP2005371702 A JP 2005371702A JP 4706968 B2 JP4706968 B2 JP 4706968B2
- Authority
- JP
- Japan
- Prior art keywords
- shot
- pressure
- flow rate
- adjusting means
- rate adjusting
- 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.)
- Active
Links
- 238000005480 shot peening Methods 0.000 title claims description 16
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Nozzles (AREA)
Description
本発明はショットピーニング装置に関する。さらに詳しくは、ショット（投射材）を安定して噴射することができるショットピーニング装置に関する。 The present invention relates to a shot peening apparatus. More specifically, the present invention relates to a shot peening apparatus that can stably eject shots (projection material).
従来より、金属製品の表面処理方法として、たとえば歯車などの浸炭製品に対して応力集中を受ける歯底部分にショットを投射することにより、圧縮残留応力を高めて疲労強度を向上させるショットピーニング処理がある。このショットピーニング処理においては、たとえば歯底部分における表面異常層の良好な剥離効果を得るために、ノズル径のエア流量とショットの噴射量との混合比が０．５〜３．０になるように設定する技術がある(特許文献１参照)。 Conventionally, as a surface treatment method for metal products, for example, shot peening treatment that increases the compressive residual stress and improves the fatigue strength by projecting shots on the tooth bottom portion that receives stress concentration on carburized products such as gears has been performed. is there. In this shot peening process, for example, in order to obtain a good peeling effect of the abnormal surface layer in the tooth bottom portion, the mixing ratio of the air flow rate of the nozzle diameter and the shot injection amount is set to 0.5 to 3.0. There is a technology to set (see Patent Document 1).
しかしながら、ショットの噴射条件として、一般に供給側の配管の内径はノズル径より大きくされているが、混合比の設定だけでは安定した噴射が得られない。 However, as a shot injection condition, the inner diameter of the supply-side piping is generally larger than the nozzle diameter, but stable injection cannot be obtained only by setting the mixing ratio.
そこで、本発明は、叙上の事情に鑑み、ショットを安定して噴射することができるショットピーニング装置を提供することを目的とする。 In view of the above circumstances, an object of the present invention is to provide a shot peening apparatus capable of stably injecting shots.
本発明のショットピーニング装置は、ショットを供給する圧力タンクと、前記圧力タンクの下部に連結されるショットの流量調整手段と、該流量調整手段からショットとエアとの混合を供給する混合配管を介して連結される噴射ノズルと、減圧弁を介して前記圧力タンクと流量調整手段にエアを供給する圧縮ポンプとを備えるショットピーニング装置であって、前記噴射ノズルのノズルの内径と、前記混合配管の内径と、前記流量調整手段にエアを供給するエア配管の内径との比率が１：１．５〜３：１．５〜６にされていることを特徴としている。 The shot peening apparatus of the present invention includes a pressure tank for supplying a shot, a flow rate adjusting means for a shot connected to a lower portion of the pressure tank, and a mixing pipe for supplying a mixture of the shot and air from the flow rate adjusting means. A shot peening apparatus comprising: an injection nozzle coupled to the pressure tank; and a compression pump for supplying air to the pressure tank and the flow rate adjusting means via a pressure reducing valve, wherein an inner diameter of the nozzle of the injection nozzle and the mixing pipe The ratio between the inner diameter and the inner diameter of the air pipe that supplies air to the flow rate adjusting means is set to 1: 1.5-3: 1.5-6.
本発明によれば、ショットとエアとの混合が良好になって、ショットの脈流がなくなるため、ショットを安定して噴射することができる。したがって、ショットピーニング処理の効率を向上させることができる。 According to the present invention, since the mixing of the shot and the air is improved and the pulsating flow of the shot is eliminated, the shot can be stably ejected. Therefore, the efficiency of the shot peening process can be improved.
以下、添付図面に基づいて、本発明のショットピーニング装置を説明する。本発明の一実施の形態にかかわるショットピーニング装置は、図１に示されるように、圧力タンク１と、流量調整手段２と、噴射ノズル３と、前記圧力タンク１と流量調整手段２に連結されるエア配管４に接続される圧縮ポンプ（図示せず）とを備えている。また、この流量調整手段２には、ショットとエアとの混合を供給する混合配管６を介して前記噴射ノズル３が連結されている。なお、前記圧力タンク１には、圧縮ポンプからのエア圧力を減圧弁５で調整されたエアが流入し、また、前記エア配管４には、圧縮ポンプからのエア圧力を減圧弁５で調整され、かつ圧損されたエアが流入している。 Hereinafter, a shot peening apparatus according to the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, a shot peening apparatus according to an embodiment of the present invention is connected to a pressure tank 1, a flow rate adjusting means 2, an injection nozzle 3, and the pressure tank 1 and the flow rate adjusting means 2. And a compression pump (not shown) connected to the air pipe 4. The injection nozzle 3 is connected to the flow rate adjusting means 2 via a mixing pipe 6 that supplies a mixture of shot and air. The pressure tank 1 is supplied with the air pressure adjusted by the pressure reducing valve 5 from the compression pump, and the air piping 4 is adjusted by the pressure reducing valve 5 to adjust the air pressure from the compression pump. And the pressure-damped air is flowing in.
前記流量調整手段２としては、本発明において、とくに限定されるものではないが、たとえばスクリューねじの送り量に相当するショットの量を送り出させることができる機構などを用いることができる。また、たとえば被加工物やショットの種類に応じて、ショットの投射圧力や、流量を調整できるようにこの流量調整手段２を制御することができる。 The flow rate adjusting means 2 is not particularly limited in the present invention. For example, a mechanism that can feed a shot amount corresponding to a screw screw feed amount can be used. Further, the flow rate adjusting means 2 can be controlled so that the shot projection pressure and flow rate can be adjusted in accordance with, for example, the workpiece and the type of shot.
前記圧力タンク１には、ショットが充填されており、圧縮ポンプから送り込まれる圧縮空気によりショットを流量調整手段２に供給する。該流量調整手段２では、ショットと圧縮ポンプから送り込まれた圧縮空気とを所定の流量になるように調整されたのち、ショットが圧縮空気とともに混合配管６に圧送されて、噴射ノズル３の方向に向けて送給される。そして、該噴射ノズル３の先端部に設けられるノズル３ａからショットが圧縮空気とともに、たとえばモータ１１の回転軸１２に取り付けられた被加工物１３へ噴射される。 The pressure tank 1 is filled with shots, and the shots are supplied to the flow rate adjusting means 2 by compressed air fed from a compression pump. In the flow rate adjusting means 2, the shot and the compressed air sent from the compression pump are adjusted to have a predetermined flow rate, and then the shot is pumped together with the compressed air to the mixing pipe 6 to move toward the injection nozzle 3. It is sent toward. Then, a shot is sprayed from the nozzle 3 a provided at the tip of the spray nozzle 3 together with the compressed air onto a workpiece 13 attached to the rotating shaft 12 of the motor 11, for example.
本実施の形態では、前記噴射ノズル３のノズル３ａの内径と、前記混合配管６の内径と、前記エア配管４の内径との比率を１：１．５〜３：１．５〜６にすることにより、ショットとエアとの混合が良好になるため、ショットの脈流や逆流を防止して、ショットを安定して噴射することができる。また、前記圧力タンク１の内圧と前記流量調整手段２に及ぼす圧力との圧力関係において、好ましくは同等または前記流量調整手段２側に所定の圧力差を保持する、すなわち流量調整手段２に及ぼす圧力を前記圧力タンク１の内圧より０．０５ＭＰａ以下にする。これは、圧力タンク１側（ショットが入ってる側）の圧力を０．０５ＭＰａ以下でないと、ショットが逆流してしまうし、０．０５ＭＰａをこえると、混合スピードが速すぎて、制御できなくからである。これにより、さらに安定した噴射を行うことができる。 In the present embodiment, the ratio of the inner diameter of the nozzle 3 a of the injection nozzle 3, the inner diameter of the mixing pipe 6, and the inner diameter of the air pipe 4 is 1: 1.5 to 3: 1.5 to 6. As a result, since the mixing of the shot and the air becomes good, it is possible to prevent shot pulsation and backflow and to stably eject the shot. The pressure relationship between the internal pressure of the pressure tank 1 and the pressure exerted on the flow rate adjusting means 2 is preferably equal or a predetermined pressure difference is maintained on the flow rate adjusting means 2 side, that is, the pressure exerted on the flow rate adjusting means 2. Is set to 0.05 MPa or less from the internal pressure of the pressure tank 1. This is because if the pressure on the pressure tank 1 side (the side containing the shot) is not less than 0.05 MPa, the shot will flow backward, and if it exceeds 0.05 MPa, the mixing speed will be too high and control will not be possible. It is. Thereby, more stable injection can be performed.
本発明は、適用に際し、とくに限定されるものではなく、工具類、機械部品などの金属製品の表面処理一般に適用することができ、たとえば歯車などの浸炭製品に対して応力集中を受ける歯底部分にショットを投射することにより、圧縮残留応力を高めて疲労強度を向上させることができる。 The present invention is not particularly limited in application, and can be generally applied to surface treatment of metal products such as tools and machine parts. For example, a tooth bottom portion that receives stress concentration on a carburized product such as a gear. By projecting a shot onto the surface, it is possible to increase the compressive residual stress and improve the fatigue strength.
つぎに本発明の実施例を説明するが、本発明はかかる実施例に限定されるものではない。 Next, examples of the present invention will be described, but the present invention is not limited to such examples.
本実施例における装置として、図１に示される装置を用いて、エア配管側と圧力タンクからのエアの圧縮圧力をそれぞれ０．２８ＭＰａおよび０．３ＭＰａに設定し、使用したショットの平均粒径は０．２ｍｍであった。また、ノズル３ａの内径ａ、混合配管６の内径ｂおよびエア配管４の内径ｃの比率を表１に示す。噴射の良否判定は、噴射されたショットの量のバラツキが１０％以内であること、およびアークハイトのバラツキが１０％以内であることにより行った。本実施例により、比率が１：１．５〜３：１．５〜６であるときが、噴射時のショットの脈流がなくなり、ショットを安定して噴射できることがわかった。 As an apparatus in this example, using the apparatus shown in FIG. 1, the compression pressure of air from the air piping side and the pressure tank was set to 0.28 MPa and 0.3 MPa, respectively, and the average particle size of the shot used was It was 0.2 mm. Table 1 shows the ratio of the inner diameter a of the nozzle 3a, the inner diameter b of the mixing pipe 6, and the inner diameter c of the air pipe 4. Judgment of the quality of the injection was made based on the fact that the variation in the amount of shots shot was within 10% and the variation in arc height was within 10%. According to this example, it was found that when the ratio was 1: 1.5 to 3: 1.5 to 6, the shot pulsating flow at the time of injection disappeared and the shot could be stably injected.
１ 圧力タンク
２ 流量調整手段
３ 噴射ノズル
３ａ ノズル
４ エア配管
５ 減圧弁
６ 混合配管
DESCRIPTION OF SYMBOLS 1 Pressure tank 2 Flow volume adjustment means 3 Injection nozzle 3a Nozzle 4 Air piping 5 Pressure reducing valve 6 Mixing piping
Claims (3)
2. The shot peening apparatus according to claim 1, wherein a pressure exerted on the flow rate adjusting means is 0.05 MPa or less than an internal pressure of the pressure tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005371702A JP4706968B2 (en) | 2005-12-26 | 2005-12-26 | Shot peening equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005371702A JP4706968B2 (en) | 2005-12-26 | 2005-12-26 | Shot peening equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007168047A JP2007168047A (en) | 2007-07-05 |
| JP4706968B2 true JP4706968B2 (en) | 2011-06-22 |
Family
ID=38295274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005371702A Active JP4706968B2 (en) | 2005-12-26 | 2005-12-26 | Shot peening equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4706968B2 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60109863U (en) * | 1983-12-28 | 1985-07-25 | 動力炉・核燃料開発事業団 | Rotary feeder air backflow prevention device |
| JPS6394662U (en) * | 1986-12-11 | 1988-06-18 | ||
| JPH01257565A (en) * | 1988-04-08 | 1989-10-13 | Sintokogio Ltd | Air blast method and apparatus therefor |
| JPH07501268A (en) * | 1991-11-19 | 1995-02-09 | チャーチ・アンド・ドゥワイト・カンパニー・インコーポレイテッド | Blasting equipment and methods |
| JP2000042001A (en) * | 1998-05-26 | 2000-02-15 | Sinto Brator Co Ltd | Carries removing material and caries removing device |
| JP2005103651A (en) * | 2003-09-26 | 2005-04-21 | Koji Matsuki | Method for boring material to be processed and device for it |
| JP2005279779A (en) * | 2004-03-26 | 2005-10-13 | Satoo Techno Conducts:Kk | Blast apparatus using rotary blower |
-
2005
- 2005-12-26 JP JP2005371702A patent/JP4706968B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60109863U (en) * | 1983-12-28 | 1985-07-25 | 動力炉・核燃料開発事業団 | Rotary feeder air backflow prevention device |
| JPS6394662U (en) * | 1986-12-11 | 1988-06-18 | ||
| JPH01257565A (en) * | 1988-04-08 | 1989-10-13 | Sintokogio Ltd | Air blast method and apparatus therefor |
| JPH07501268A (en) * | 1991-11-19 | 1995-02-09 | チャーチ・アンド・ドゥワイト・カンパニー・インコーポレイテッド | Blasting equipment and methods |
| JP2000042001A (en) * | 1998-05-26 | 2000-02-15 | Sinto Brator Co Ltd | Carries removing material and caries removing device |
| JP2005103651A (en) * | 2003-09-26 | 2005-04-21 | Koji Matsuki | Method for boring material to be processed and device for it |
| JP2005279779A (en) * | 2004-03-26 | 2005-10-13 | Satoo Techno Conducts:Kk | Blast apparatus using rotary blower |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007168047A (en) | 2007-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8342912B2 (en) | Abrasive water jet processing machine | |
| JP6432749B2 (en) | Air-jet injection device | |
| DE102008036331B3 (en) | Blasting device for irradiating surfaces to be treated | |
| EP2696989B1 (en) | System and method for delivering fine-grain powder with the aid of a diaphragm pump | |
| WO2006053248A3 (en) | Method and apparatus for jet-fluid abrasive cutting | |
| JP4930849B2 (en) | Direct pressure type continuous injection air blast cleaning equipment | |
| US10076823B2 (en) | Wet abrasive blasting system and method | |
| WO2017202852A1 (en) | Coating method, thermal coating, and cylinder having a thermal coating | |
| JP4706968B2 (en) | Shot peening equipment | |
| JP2008229795A (en) | Machining device and machining method | |
| KR200385780Y1 (en) | Spray Gun | |
| CN110524437A (en) | The injection apparatus of mixing chamber before a kind of liquid is solid | |
| EP1306551A3 (en) | Method and apparatus for supplying coating material | |
| US20070090130A1 (en) | Device for applying foamed hot melt adhesive, and method for selectively applying foamed hot melt adhesive and solid hot melt adhesive | |
| JP2009160587A (en) | Cleaning device and cleaning method | |
| CN201913550U (en) | Shot-blasting machine capable of stably jetting | |
| CN107855947B (en) | Active sand adding pressure tank | |
| JP2012040672A (en) | Nozzle device for working fluid in wire cut electric discharge machine | |
| JP4759270B2 (en) | Control method of atomizer | |
| JP4978240B2 (en) | Cavitation peening method and apparatus | |
| JP2876400B2 (en) | Projection material quantitative supply device | |
| CN205650611U (en) | A salt bath system for driving steel pipe internal surface pockmark | |
| JP2002224961A (en) | Abrasive jet forming method and equipment | |
| JP2010188470A (en) | Air blast apparatus | |
| CN114523421A (en) | Abrasive water jet polishing device for high-strength and high-hardness plastic material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080207 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20100609 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100611 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110218 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110303 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4706968 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |