JPH05212629A - Method for roundly chamfering small hole in groove bottom - Google Patents
Method for roundly chamfering small hole in groove bottomInfo
- Publication number
- JPH05212629A JPH05212629A JP1755892A JP1755892A JPH05212629A JP H05212629 A JPH05212629 A JP H05212629A JP 1755892 A JP1755892 A JP 1755892A JP 1755892 A JP1755892 A JP 1755892A JP H05212629 A JPH05212629 A JP H05212629A
- Authority
- JP
- Japan
- Prior art keywords
- chamfering
- small hole
- roundly
- groove bottom
- groove
- 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.)
- Withdrawn
Links
Landscapes
- Forging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溝底小穴のＲ面取加工
方法に関し、産業機械の例えば溝つきロール等に形成さ
れる溝底小穴の面取加工に用いて好適である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round chamfering method for a groove bottom small hole, which is suitable for chamfering a groove bottom small hole formed in an industrial machine such as a grooved roll.
【０００２】[0002]
【従来の技術】従来より、図６、図７に示すように例え
ば溝付サクションロール１１の溝部１２に形成された小
穴１３の当該溝部１２の溝底１４の面取部位１５に、Ｒ
面を付与するＲ面取加工法としては、以下（１）〜
（７）に示す方法が用いられている。 （１）キリ、トイシ等の剛体の回転工具で削り取る方
法。 （２）バフ、ジスク等の軟体の回転工具で削り取る方
法。 （３）ヤスリ、ハンドラップ工具、キサゲ刃具等の手工
具で削り取る方法。 （４）ショットブラストやバレル加工等、砥粒を衝突さ
せて削り取る方法。 （５）電解加工法にて電気化学的反応により溶解除去す
る方法。 （６）放電加工法にて除去する方法。 （７）容器中で爆発燃焼させて除去する方法。2. Description of the Related Art Conventionally, as shown in FIGS. 6 and 7, for example, a small hole 13 formed in a groove portion 12 of a grooved suction roll 11 is provided with an R at a chamfered portion 15 of a groove bottom 14 of the groove portion 12.
As the R chamfering processing method for imparting a surface, the following (1) to
The method shown in (7) is used. (1) A method of scraping off with a rigid rotating tool such as a drill or a tooth. (2) A method of scraping with a soft rotating tool such as a buff or disc. (3) A method of scraping off with a hand tool such as a file, a hand wrap tool, and a scraping blade. (4) Methods such as shot blasting or barrel processing, in which abrasive particles are collided and scraped off. (5) A method of dissolving and removing by an electrochemical reaction by an electrolytic processing method. (6) A method of removing by electric discharge machining. (7) A method of explosive combustion in a container for removal.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来技
術の小穴面取方法は、以下のような問題がある。 最も平易な回転工具による方法は、特殊な部位及び形
状の場合は不可能である。 放電加工法は残留応力及び表面粗さに難点がある。 ショットブラスト法は任意の形状、寸法を正確に得る
ことが困難である。However, the conventional small hole chamfering method has the following problems. The simplest rotary tool method is not possible for special parts and shapes. The electric discharge machining method has drawbacks in residual stress and surface roughness. It is difficult for the shot blast method to accurately obtain arbitrary shapes and dimensions.
【０００４】このため従来技術に係る溝底小穴のＲ面取
加工方法では、例えばロールの機能上、疲労破壊の発生
を防ぐための条件としての以下の項目が満足出来なかっ
た。 （イ）０．５Ｒ以上の面取であること。 （ロ）面取部位に引張の残留応力が残らないこと。圧縮
残留応力を残すこと。 （ハ）面取加工の表面粗さが良いこと、即ち微細な切傷
やクラックが無いこと。For this reason, in the conventional method for rounding the chamfered small groove bottom, the following items as conditions for preventing the occurrence of fatigue fracture could not be satisfied due to the function of the roll, for example. (A) The chamfer is 0.5R or more. (B) No residual tensile stress remains at the chamfered portion. To leave compressive residual stress. (C) The surface roughness of chamfering is good, that is, there are no minute cuts or cracks.
【０００５】本発明は以上述べた事情に鑑み、溝底小穴
の面取加工において加工による疲労破壊が無く、作業工
程及び作業時間の低下を図った溝底小穴のＲ面取加工方
法を提供すること目的とする。In view of the above-mentioned circumstances, the present invention provides a R-chamfering method for groove-bottom small holes, which is free from fatigue damage due to machining in chamfering groove-bottom small holes, and which is intended to reduce working steps and working time. That is the purpose.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成する本発
明に係る溝底小穴のＲ面取加工方法は、溝底小穴の面取
部位に打撃力又は加圧力を加えて塑性変形させＲ面を付
与することを特徴とする。The R chamfering method of a groove bottom small hole according to the present invention which achieves the above object is a plastic deformation by applying a striking force or pressure to the chamfered portion of the groove bottom small hole to plastically deform the R surface. Is given.
【０００７】以下、本発明の内容を説明する。本発明に
係るＲ面取加工方法は、溝底小穴の面取部位を塑性加工
により所望のＲ面形状に成形するもので、従来技術のよ
うな不要部分を除去する方法とは全くその作用が異なる
ものである。The contents of the present invention will be described below. The R chamfering method according to the present invention forms the chamfered portion of the groove bottom small hole into a desired R surface shape by plastic working, and its action is completely different from the method of removing an unnecessary portion as in the prior art. It is different.
【０００８】先ず、本発明に係るＲ面取加工方法の塑性
加工による所望のＲ面形状を付与する手段を説明する。
例えば図１に示すような、加工ワークの溝部２０に形成
された小穴２１の面取部位２２に形成するＲ面と同様の
Ｒを有するＲ面付与部２３をその先端部に形成したポン
チ様のＲ面加工治具２４を用い、打撃力又は加圧力Ｐを
当該Ｒ面加工治具２４に加えて小穴２１の面取部位２２
を塑性変形させ、Ｒ面取加工を施している。図中、２５
は小穴２１内に加工治具２４の先端を導入するためのガ
イド部を図示する。First, a means for imparting a desired R surface shape by plastic working of the R chamfering processing method according to the present invention will be described.
For example, as shown in FIG. 1, a punch-like shape in which an R surface imparting portion 23 having an R surface similar to the R surface formed in the chamfered portion 22 of the small hole 21 formed in the groove portion 20 of the workpiece is formed at the tip portion thereof. Using the R surface processing jig 24, a striking force or a pressing force P is applied to the R surface processing jig 24, and the chamfered portion 22
R is chamfered. 25 in the figure
Shows a guide portion for introducing the tip of the processing jig 24 into the small hole 21.
【０００９】当該ポンチ様のＲ面加工治具２４に加える
打撃力としては、例えば、人力、機械力等を必要に応じ
て用い特に限定されるものではない。The hitting force applied to the punch-like R-face processing jig 24 is not particularly limited, for example, human force, mechanical force, etc. are used as necessary.
【００１０】また、この加工治具に加える打撃力は小穴
の面取部位２２に必要なＲ面が得られるまで繰返し加え
ても良い。The striking force applied to this processing jig may be repeatedly applied until the required R surface is obtained in the chamfered portion 22 of the small hole.
【００１１】図２は打撃力によって小穴２１の面取部２
２が直角状態から所望Ｒ面となるまでの塑性変形する加
程の作用概念図を示す。FIG. 2 shows the chamfered portion 2 of the small hole 21 due to the striking force.
2 is a conceptual diagram of the process of plastic deformation from 2 in a right angle state to a desired R surface.
【００１２】このように本Ｒ面加工方法では、塑性変形
により加工部位に圧縮の残留応力を与え面取部位２２の
硬度を高めている。これにより、例えば繰返し応力がか
かるサクションロール穴における疲労破壊の発生を防ぐ
ことができる。As described above, in the present R-face working method, the hardness of the chamfered portion 22 is increased by giving a compressive residual stress to the worked portion by plastic deformation. As a result, it is possible to prevent the occurrence of fatigue fracture in the suction roll hole to which repeated stress is applied, for example.
【００１３】またＲ面加工治具２４に形成したＲ面付与
部２３のＲ形状と同様の面取形状を得ることができ、形
状、寸法共に所望のものが安定して得られる。Further, a chamfered shape similar to the R shape of the R surface imparting portion 23 formed on the R surface processing jig 24 can be obtained, and desired shapes and dimensions can be stably obtained.
【００１４】面取部位２２に形成されるＲの表面粗さ
は、Ｒ面加工治具２４に形成したＲ面付与部２３の表面
粗さと近似な良好なものが得られ、従来技術による除去
方式で発生するような微細な切傷やクラックの発生が無
い。The surface roughness of the R formed on the chamfered portion 22 is as good as the surface roughness of the R surface imparting portion 23 formed on the R surface processing jig 24. There are no fine cuts or cracks like those that occur in.
【００１５】さらに、複雑な形状・寸法の面取加、非回
転体形状の面取加工ができ、例えば図３に示すようにワ
ークの面取部位２２に、Ｒの曲率が大なるＲ（Ｒ1 ≧Ｒ
2 ）を付与することも容易である。Further, chamfering of a complicated shape and size and chamfering of a non-rotating body can be performed. For example, as shown in FIG. 1 ≧ R
It is easy to add 2 ).
【００１６】本Ｒ面取加工によればロールの機能上に優
れ、疲労破壊を防ぎ作業工程数、作業時間の低下を図る
ことができる。第１表に以下、溝底小穴のＲ面取加工に
要求される項目を、本発明方法に係る場合（Ｉ）及び従
来技術に係る場合（ＩＩ）〜（ＶＩＩ）の測定評価した
結果を各々示す。According to the present R chamfering process, the function of the roll is excellent, fatigue fracture can be prevented, and the number of working steps and working time can be reduced. Table 1 below shows the results of measuring and evaluating the items required for R chamfering of the groove bottom small hole in the case of the method of the present invention (I) and the cases of the related art (II) to (VII), respectively. Show.
【００１７】[0017]
【表１】 [Table 1]
【００１８】表１中（イ）〜（ヘ）は以下に示す項目で
ある。 （イ）０．５Ｒ以上の面取であること。 （ロ）面取部位に引張の残留応力が残らないこと。圧縮
残留応力を残すこと。 （ハ）面取加工の表面粗さが良いこと、即ち微細な切傷
やクラックが無いこと。・穴の機能上要求される形状・
寸法として、 （ニ）溝巾と穴径の関係が、Ｄ＋２Ｒ＞Ｂ（Ｄ：溝の直
径、Ｒ：面取のＲ，Ｂ：溝幅）の場合。 （ホ）穴全周に同一の面取を行う場合、及至はロールの
円周方向の部位で大きな面を取る場合。 （へ）大型のロール、即ち外径４００ｍｍ×全長４００
０ｍｍ以上のロールの面取が可能であること。The items (a) to (f) in Table 1 are the following items. (A) The chamfer is 0.5R or more. (B) No residual tensile stress remains at the chamfered portion. To leave compressive residual stress. (C) The surface roughness of chamfering is good, that is, there are no minute cuts or cracks.・ Shape required for the function of the hole ・
As a dimension, (d) When the relationship between the groove width and the hole diameter is D + 2R> B (D: groove diameter, R: chamfered R, B: groove width). (E) When the same chamfering is performed on the entire circumference of the hole, or when a large chamfer is taken at the circumferential portion of the roll. (He) Large roll, ie, 400 mm outer diameter x 400 total length
Be able to chamfer rolls of 0 mm or more.
【００１９】[0019]
【実施例】次に図６、図７に示す溝付サクションロール
の溝底小穴の面取加工に本方法を用いた一実施例を説明
する。図４は本実施例で用いた加工用治具の概略図であ
る。EXAMPLE Next, an example of using this method for chamfering the groove bottom small hole of the grooved suction roll shown in FIGS. 6 and 7 will be described. FIG. 4 is a schematic view of the processing jig used in this example.
【００２０】両図に示すように対象ワークであるサクシ
ョンロール１１は波形の歯を切った面長２〜３ｍのロー
ルで、１〜３ｍｍの溝１２が数十本形成されており、そ
の溝１２にサクション用の小穴（径３．５ｍｍ）１３が
形成されている。小穴１３の穴径は開孔率を確保するた
めに溝１２の幅よりも大きくしている。As shown in both figures, a suction roll 11 which is a target work is a roll having a corrugated tooth and a surface length of 2 to 3 m, and several tens of grooves 12 of 1 to 3 mm are formed. A small hole (diameter 3.5 mm) 13 for suction is formed in the. The hole diameter of the small hole 13 is made larger than the width of the groove 12 in order to secure the open area ratio.
【００２１】本実施例で用いるＲ面加工治具３１は先端
に所望Ｒを形成したＲ付与部３２を有するポンチ刃具３
３をホルダ３４に固定ボルト３５を用いて固定してなる
ものであり、ポンチ刃具３３の板幅ｄは溝１２に挿入可
能な幅としている。図中、３６は小穴１３に挿入するガ
イド部である。The R surface processing jig 31 used in this embodiment has a punch cutting tool 3 having an R imparting portion 32 having a desired R formed at the tip thereof.
3 is fixed to the holder 34 with a fixing bolt 35, and the plate width d of the punch blade 33 is a width that can be inserted into the groove 12. In the figure, 36 is a guide portion to be inserted into the small hole 13.
【００２２】上記加工治具３１を用いて面取を終了した
後の断面各位置の硬度測定データを図５に示す。図５
（ｂ）中Ｘは測定位置を示す。同図に示すように、面取
部位の硬度、即ち硬度が大幅に改善されている。FIG. 5 shows the hardness measurement data at each position of the cross section after the chamfering is completed using the processing jig 31. Figure 5
In (b), X indicates a measurement position. As shown in the figure, the hardness of the chamfered portion, that is, the hardness is significantly improved.
【００２３】[0023]
【発明の効果】以上述べたように本発明によれば、面取
用加工治具を用いて小穴の面取部位に打撃力を加えるこ
とで（１）〜（５）に記載の効果を奏する。 （１）塑性加工で形成する本考案の方式は、加工部位に
圧縮の残留応力を与え、材料の硬度を高める。これによ
り繰返応力がかかるロールの穴における疲労破壊の発生
を防ぐことが出来る。 （２）ポンチ様工治具の加圧による成形は、工具の形状
に近い面取形上を得ることが出来る。即ち、形状・寸法
共に要求のものが安定して得られる。 （３）表面粗さは、工具の表面粗さと近似の良好なもの
が得られ、従来方法の除去方式で発生する微細な切傷や
クラックの発生がない。 （４）複雑な形状・寸法の面取加工、非回転体形状の面
取加工が可能である。 （５）加工工数の短縮、例えば１個の穴面取に要する正
味の加工時間はショットブラスト法や放電加工法によれ
ば、この数倍を要するが本方法では、２秒以下ですむ。As described above, according to the present invention, the effects described in (1) to (5) can be obtained by applying a striking force to the chamfered portion of the small hole using the chamfering jig. .. (1) The method of the present invention in which the material is formed by plastic working imparts compressive residual stress to the worked portion to increase the hardness of the material. As a result, it is possible to prevent the fatigue fracture from occurring in the roll hole to which the repeated stress is applied. (2) When the punch-like work jig is pressed, a chamfered shape close to the shape of the tool can be obtained. That is, the required shape and size can be stably obtained. (3) The surface roughness that is close to the surface roughness of the tool is obtained, and no fine cuts or cracks are generated in the conventional removal method. (4) Chamfering of complicated shapes and dimensions and chamfering of non-rotating bodies are possible. (5) According to the shot blast method and the electric discharge machining method, the net machining time required for shortening the machining man-hour, for example, for chamfering one hole is several times this, but in this method, it is 2 seconds or less.
【図１】Ｒ面取加工の概略図である。FIG. 1 is a schematic view of an R chamfering process.
【図２】Ｒ面取加工による打撃力作用図である。FIG. 2 is an action diagram of a striking force by R chamfering.
【図３】小穴のＲ面取形状を示す概略図である。FIG. 3 is a schematic view showing an R chamfered shape of a small hole.
【図４】本実施例に係る加工治具の概略図である。FIG. 4 is a schematic view of a processing jig according to the present embodiment.
【図５】本実施例に係る硬度改善データ測定図である。FIG. 5 is a hardness improvement data measurement diagram according to the present embodiment.
【図６】サクションロールの概略図である。FIG. 6 is a schematic view of a suction roll.
【図７】図６の平面図及び図７（Ａ）のＢ−Ｂ，Ｃ−Ｃ
断面図である。7 is a plan view of FIG. 6 and BB and CC of FIG.
FIG.
１１ 溝付サクションロール １２ 溝部 １３、２１ 小穴 １４ 溝底 １５、２２ 面取部位 ２３、３２ Ｒ面付与部 ２４、３１ Ｒ面加工治具 ２５ ガイド部 ３３ ポンチ刃具 ３４ ホルダ 11 Suction Roll with Grooves 12 Grooves 13, 21 Small Holes 14 Groove Bottoms 15, 22 Chamfering Sites 23, 32 R Surface Applying Parts 24, 31 R Surface Machining Tools 25 Guide Parts 33 Punch Cutting Tools 34 Holders
フロントページの続き (72)発明者 大西 勇一 広島県三原市糸崎町5007番地 三菱重工業 株式会社三原製作所内 (72)発明者 小原 忠 広島県三原市糸崎町5007番地 三菱重工業 株式会社三原製作所内Front page continued (72) Inventor Yuichi Onishi 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd.Mihara Works (72) Inventor Tadashi Ohara 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries Mihara Works, Ltd.
Claims (1)
を加えて塑性変形させＲ面を付与することを特徴とする
溝底小穴のＲ面取加工方法。1. A method for rounding a chamfer of a groove bottom small hole, which comprises applying a striking force or a pressing force to a chamfered portion of the groove bottom small hole to plastically deform the chamfered portion to give an R surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1755892A JPH05212629A (en) | 1992-02-03 | 1992-02-03 | Method for roundly chamfering small hole in groove bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1755892A JPH05212629A (en) | 1992-02-03 | 1992-02-03 | Method for roundly chamfering small hole in groove bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05212629A true JPH05212629A (en) | 1993-08-24 |
Family
ID=11947245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1755892A Withdrawn JPH05212629A (en) | 1992-02-03 | 1992-02-03 | Method for roundly chamfering small hole in groove bottom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05212629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001090605A1 (en) * | 2000-05-24 | 2001-11-29 | Zf Friedrichshafen Ag | Automatic transmission |
-
1992
- 1992-02-03 JP JP1755892A patent/JPH05212629A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001090605A1 (en) * | 2000-05-24 | 2001-11-29 | Zf Friedrichshafen Ag | Automatic transmission |
| JP2004517268A (en) * | 2000-05-24 | 2004-06-10 | ツェットエフ、フリードリッヒスハーフェン、アクチエンゲゼルシャフト | Automatic transmission |
| JP4832698B2 (en) * | 2000-05-24 | 2011-12-07 | ツェットエフ、フリードリッヒスハーフェン、アクチエンゲゼルシャフト | Automatic transmission |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0875206B1 (en) | Method for manufacturing taper point surgical needles | |
| AU752035B2 (en) | Method and apparatus for producing beneficial stresses around apertures by the use of focused stress waves | |
| Matuszak | Comparative analysis of the effect of machining with wire and ceramic brushes on selected properties of the surface layer of EN AW-7075 aluminium alloy | |
| JPH05212629A (en) | Method for roundly chamfering small hole in groove bottom | |
| US20110135414A1 (en) | Method of increasing the fracture toughness of the outer layer of a carbide cutting bit of a drill | |
| US5136905A (en) | Device and method for forming a gasket hole | |
| JP3137729B2 (en) | Manufacturing method of gabari parts | |
| US20040187979A1 (en) | Cutting tool body having tungsten disulfide coating and method for accomplishing same | |
| RU2306203C1 (en) | Method for planetary working with use of needle milling cutter | |
| RU2221667C1 (en) | Apparatus for cutting wire by blanks | |
| JP2002263902A (en) | Cutting method | |
| EP0289501B1 (en) | Method and device for edge-finishing | |
| US3184827A (en) | Trepanning tool for trepanning tapered metal shapes | |
| US3109232A (en) | Method for trepanning tapered metal shapes | |
| JP2003191012A (en) | Metallic tube and method for manufacturing it | |
| SU1449220A1 (en) | Method of reconditioning water-cooled mandrels of piercing mill | |
| RU2098259C1 (en) | Method of static-pulse working by surface plastic deformation | |
| US11235395B2 (en) | Controlled fracture machining method for producing through-holes | |
| SE8701493L (en) | PROCEDURES FOR MANUFACTURE OF BANDS FOR TOOLS FOR PRESENTLY HANDLING OR CUTTING PROCESSING AND MANUFACTURING OF THESE TOOLS, APPARATUS FOR EXECUTION OF THE PROCEDURE AND BANDS AND TOOLS | |
| JPH07112224A (en) | Piercing device | |
| RU2205741C1 (en) | Grinding apparatus | |
| SU1060315A1 (en) | Method of machining holes | |
| JP3275037B2 (en) | Processing method of caps for writing or makeup tools | |
| RU2054342C1 (en) | Method of trimming holes in rigid material | |
| RU2291761C1 (en) | Combined milling method by means of needle milling cutter at strengthening openings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990518 |