JP2004114252A

JP2004114252A - Deburring device for outer periphery of molded article

Info

Publication number: JP2004114252A
Application number: JP2002282780A
Authority: JP
Inventors: Kiyoshi Inoue; 井上　喜義; Kenji Suguro; 勝呂　謙二
Original assignee: Suguro Tekko KK
Current assignee: Suguro Tekko KK
Priority date: 2002-09-27
Filing date: 2002-09-27
Publication date: 2004-04-15
Anticipated expiration: 2022-09-27
Also published as: JP3821769B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deburring device for the outer periphery of a molded article which machines a curve close to a circuit or a rectangle or a wave-like curve with one cutting tool, and provides a good finished surface. <P>SOLUTION: In the deburring device for the outer periphery of the molded article, work is attached to a work attaching block 2 having a forming cam 3 fixed to its lower part and is moved longitudinally, and its outer periphery is cut. An angle holding cam 6 for always keeping the cutting angle of the cutting tool 11 mounted to a tool rest 5 at a predetermined angle with respect to the outer periphery of the work is fixed to a lower part of the work attaching block 2 than the forming cam 3, a tool rest supporting table 8 having at its upper tip a roller 7 for keeping the angle abutting on the angle holding cam 6 is arranged, and a turning means 9 for allowing turning of the tool rest 5 is disposed under the tool rest supporting table 8. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は携帯用電話機或いはノートパソコンの液晶画面のフレームやハウジング，自動車の計器カバー，家電製品などの異形で曲面や曲線を有した成型品などが機械加工で、その周囲を切削して仕上げる際に使用する成型品の外周用バリ取り装置、特には異形で且つ薄肉な成型品の外周部の成型バリやゲートなどを切削して仕上げるための成型品の外周用バリ取り装置に関する。
【０００２】
【従来の技術】
一般に異形で曲面や曲線を有した成型品などの外周仕上げを行う場合、手作業によって成型バリやゲートなどをニッパーや電動切削工具である程度除去し、それをヤスリやサンドペーパー等で仕上げるバリ取り加工が行われていた。しかし手工具を用いると非常に能率が悪く、寸法精度も悪く、且つ不良品が多く出てしまうため、安定した生産が出来ないと共に収益性が良くなかった。またエンドミルなどの回転刃を用いる時には、ブレやビビリを生じて仕上げ面精度の劣化となってワークの素材面の逃げや欠け等が生じ、且つ回転刃が食い込んで不良品となり易かったので、寸法精度が不安定であり、製品歩留まりが悪かった。しかも、この時、粉塵が発生するため、作業環境が悪いものであった。特に異形で曲面や曲線を有すると共に薄肉に形成された成型品などの外周仕上げを行う場合、加工中に成型品が曲ったり反ったり或いは亀裂や割れを生じ易いので、神経を集中させて作業を行わなければならず、手間が多く掛り作業性が悪かった。
【０００３】
又、機械加工で前記成型品などの外周を自動切削して仕上げる外周用バリ取り装置としては、倣い装置を備えたフライスやＮＣ工作機械等が用いられ、この機械を使用し、非鉄金属の薄肉な成型品或いは合成樹脂やゴムの成型品等に於ける素材自体の強度が小さい成型品をバリ取り加工する場合、外周用バリ取り装置に取付けたエンドミルなどの回転刃は素材面に当てると、回転刃が食い込まれてしまったり、焼き付きなどが発生し易かった。またエンドミルなどの回転工具を使用する際、モーターの回転による振動や騒音が発生していた。更に、薄肉な成型品などを前記回転刃で切削すると、ワークの素材面の逃げや欠け等が発生して不良品を出し易かった。しかもＮＣ工作機械を用いる場合には、設備費や維持管理費が多く掛ると共に熟練したプログラマーを雇わなければならず、且つ零細企業ではＮＣ工作機械を購入することが困難であった。しかも、非鉄金属に於けるマグネシウム合金製品の外周バリ取り加工を行う場合、グラインダー加工のような粉体状の切粉を析出させると、マグネシウムの切粉が発火したり、或いはエンドミルなどの回転刃で行っても切削量が少ないと、マグネシウムの切粉は発火し易くなり、周囲の油などに火がついて出火を起こす恐れがあり、切削条件が非常に難しく、且つ、その量産用バリ取り加工の安全確保が困難であった。このため、マグネシウム合金製品の外周バリ取り加工は機械加工で行うものはなかった。
【０００４】
このため本発明者が、機械加工でバリ取りを行い且つ寸法精度を向上させて、量産用バリ取り加工に最適であると共にワークに歪が生じることなく加工でき、且つ刃物の交換期間が延びて加工コストを低減化し、更にマグネシウム合金製品の外周仕上げ加工が高精度で安全に行えると共に機械加工で切削バリ取り作業が可能となる外周用バリ取り装置を、特願平１１−３４０５８５号，特願平１１−３６３８９３号，特願平１１−３６３８９９号に於いて提案した所である。この特願平１１−３４０５８５号の構造はワークが回転し、刃物が左右移動する構造のものであり、特願平１１−３６３８９３号の構造はワークが前後移動し、刃物が左右移動する構造のもので、更に特願平１１−３６３８９９号の構造はワークが固定され、刃物が前後・左右移動する構造のものであった。
【０００５】
【発明が解決しようとする課題】
しかしながら、特願平１１−３４０５８５号は円形に近い曲線の加工に適し、図４（ｂ）以外の形状の加工は難しかった。また特願平１１−３６３８９３号と特願平１１−３６３８９９号のものは長方形に近い曲線の加工に適し、図４（ｂ）〜（ｅ）に示すような形状のワークの外周仕上げ加工は可能であるが、図４（ａ）のような波形状の曲線の加工は困難であった。また前記加工を行う際、例えば図４（ｅ）に示すような形状のワークの外周仕上げ加工を行う場合、一般に図５（ｂ）に示す如く３本のバイトを使用してＡ，Ｂ，Ｃの区間をそれぞれのバイト１，２，３によって往復加工させるため、駆動機構が複雑であると共にバイトの切換え箇所に於ける仕上面の段差をなくし且つ面精度を保持するように調整する作業が困難であった。尚、この時に手前のバイト１だけで加工すると、Ａ区間は良好に、Ｂ区間は切削出来るが切削角度が悪いのでビビリを生じて綺麗な仕上面が得られにくくなり、Ｃ区間に於いては、バイト１の切削面が当らず、逃げ部分が当ってしまう恐れがあった。
【０００６】
本発明は円形又は長方形に近い曲線或いは波形状の曲線の加工が１本のバイトで行えると共に仕上面が良好となる成型品の外周用バリ取り装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上記問題点を解決するために本発明は成されたものであり、つまり、形成カムが下部に固定されたワーク取付台にワークを取付け、ワークを前後移動させてその外周が切削加工される成型品の外周用バリ取り装置に於いて、ワークの外周に対して、刃物台に取付けるバイトの切削角度を常時所定角度に保持するための角度保持カムが形成カムよりも更にワーク取付台の下部に固定され、その角度保持カムと当接する角度保持用ローラーを上部先端に取付け且つ刃物台を支持する刃物台支持盤が配置され、刃物台を回動可能にさせるための回動手段が刃物台支持盤の下部に設けられた構造とする。また刃物台をワーク取付台の両側に配置させると良く、回動手段としては、刃物台支持盤の下部と一端を固定した軸と、該軸を軸支する軸受と、軸の他端に固定させて突出する突起と、該突起の先端部に連結して基台へ配置させたエアーシリンダーとから少なくとも成されたものを用いると良い。
【０００８】
【発明の実施の形態】
図１、図２は本発明の実施形態を示す図であり、これに基づいて説明する。（１）は二重に形成された本装置の基台であり、（２）は基台（１）の中央を図示しない繰出用シリンダーによって前後移動する金属製のワーク取付台であり、該ワーク取付台（２）の形状はワーク（Ｗ）の内側の形状に合せて形成されている。（３）は前記ワーク取付台（２）の下部両側に一体成形した形成カムであり、該形成カム（３）はワーク（Ｗ）の外周仕上げ寸法の基準になる形状であり、その外周表面には焼き入れ処理が施されている。尚、前記形成カム（３）は前記ワーク取付台（２）とボルトで固定され且つ交換可能に取付けても良い。（４）は前記形成カム（３）の外周に当接する回転自在な形成用ローラーである。（５）は前記形成用ローラー（４）を下部先端に取付けた刃物台であり、該刃物台（５）は前記ワーク取付台（２）の両側に左右移動可能に配置されている。尚、前記ワーク取付台（２），　前記形成カム（３），前記形成用ローラー（４），前記刃物台（５）は本発明者が提案した特願平１１−３６３８９３号で使用される部品と同一構造のものを用いると良い。又、前記刃物台（５）は前記ワーク取付台（２）の両側に必ずしも配置せず、片側だけに配置させたものとしても良い。この時には、前記形成カム（３），前記形成用ローラー（４）の片側は不要であり、且つ前記刃物台（５）に取付けられる後述する各部品の片側も不要である。
【０００９】
（６）は前記ワーク取付台（２）の下部で且つ前記形成カム（３）よりも更に下方両側に固定した角度保持カムであり、これはワーク（Ｗ）の外周に対して、前記刃物台（５）に取付けるバイト（１１）の切削角度を常時所定角度に保持するためのものである。尚、前記角度保持カム（６）は前記ワーク取付台（２）とボルトで固定され且つ交換可能に取付けるものとしても良い。（７）は前記角度保持カム（６）に当接する角度保持用ローラーであり、（８）は前記角度保持用ローラー（７）を上部先端に取付けると共に前記刃物台（５）を支持するために配置された刃物台支持盤である。（９）は前記刃物台支持盤（８）の下部に取付けられると共に前記刃物台（５）を回動可能にする回動手段であり、該回動手段（９）は、前記刃物台支持盤（８）の下部と一端を固定した軸（９１）と、該軸（９１）を軸支すると共に前記基台（１）に固定した軸受（９２）と、前記軸（９１）の他端に固定させて突出する突起（９３）と、該突起（９３）の先端部に連結して前記基台（１）へ配置させたエアーシリンダー（９４）などとから構成されている。尚、前記突起（９３）には前記エアーシリンダー（９４）によって一定な押圧力が付与し続けられている。（１０）は刃物台（５）を左右移動させると共に一定な押圧力で付勢するための水平移動手段であり、該水平移動手段（１０）には、刃物台（５）の後端に連結すると共に前記刃物台支持盤（８）の上面に取付けた押圧用のエアーシリンダーと、刃物台（５）をスムーズに摺動させるためのころがり軸受を用いたガイド部材などとから構成されるものを用いれば良い。また前記ガイド部材は上記のものに限定されるものではなく、軌道と案内部とからなる構造のものでも良い。（１２）は上方からワーク（Ｗ）を押えるために備えたワーク押え手段である。
【００１０】
次に本発明の作用について説明する。予め左右の刃物台（５）にバイト（１１）を取付け、且つワーク（Ｗ）をワーク取付台（２）に載せると共にワーク押え手段（１２）でワーク（Ｗ）の略上面全体を押え付けて固定しておく。そして予め図３（ｂ）の位置から図３（ａ）の位置へ移動させておく。先ず図示しない繰出手段によってワーク（Ｗ）が取付けられたワーク取付台（２）を図３（ａ）の状態から（ｂ）へ図中の白抜き矢印のように一気に前後移動させる。この時、形成用ローラー（４）が形成カム（３）に沿って当接されながら摺動すると共に左右に配置した水平移動手段（１０）の押圧用シリンダーで刃物台（５）には中央へ向って一定な押圧力が付勢されているため、刃物台（５）に取付けたバイト（１１）は、図中の２点鎖線に示すように移動して一気に切削加工するのである。更にこの時、角度保持用ローラー（７）が角度保持カム（６）に沿って当接されながら摺動すると共に左右に配置した回動手段（９）のエアーシリンダー（９４）の伸縮で突起（９３）を図中の矢印のように回動させ且つ該突起（９３）には一定な押圧力が付勢されているため、バイト（１１）の切削角度が常時所定角度に保持され、ワーク（Ｗ）の外周面の仕上げ状態が良好となるのである。尚、ワーク（Ｗ）の外周が切削される時、バイト（１１）は約０．５ｍｍ食い込むようにさせると良い。
【００１１】
図５（ａ）に基づいて本発明が１本のバイト（１１）で図４（ｅ）に示すワーク（Ｗ）のバリ取り加工を行う場合について説明する。先ずバイト（１１）の先端が水平移動手段（１０）によってワーク（Ｗ）に食い込むと共に回動手段（９）によって刃先が右回りに傾き、ワーク（Ｗ）の外形と略直角にバイト（１１）の角度が保持されながらＡ区間の曲線を切削加工するのである。この時、ワーク（Ｗ）の動きは回動しながら徐々に右方向へ移動する。次にＢ区間に達すると、バイト（１１）は横方向から一定の押圧力が加わった状態で前後方向に移動して平面を切削加工する。そしてＣ区間に達すると、バイト（１１）の刃先は左側に傾き且つ左側へ移動しながらＣ区間の曲線を切削加工してバリ取り加工が完了する。尚、この時、バイト（１１）の横方向は形成カム（３）で規制され、バイト（１１）の傾きは角度保持カム（６）によって規制されているため、最適な切削角度でバリ取り加工が行えるのである。従って、刃物台（５）を両側に配置させ、ワーク（Ｗ）を前後方向に移動させることにより、図４（ａ）〜（ｅ）のような形状のバリ取り加工が一気に終了するのである。また本発明は特願平１１−３６３８９３号と同様にワーク取付台（２）がスムーズに前後に摺動しながら移動することにより、振動や騒音の発生がなく且つ製造コストが安価なものとなると共に切削による熱の発生が極めて少なく、マグネシウムの切粉が発火したりする恐れが殆どなくなり、マグネシウム合金製品の外周仕上げ加工が機械加工でも容易に行え、その量産バリ取り加工が可能となると共に高精度の加工が行えるものとなった。
【００１２】
【発明の効果】
本発明はこのように構成させたことにより、下記に記載する効果を有する。
【００１３】
請求項１のように形成カム（３）を下部に固定したワーク取付台（２）にワーク（Ｗ）を取付け、ワーク（Ｗ）を前後移動させてその外周が切削加工される成型品の外周用バリ取り装置に於いて、ワーク（Ｗ）の外周に対して、刃物台（５）に取付けるバイト（１１）の切削角度を常時所定角度に保持するための角度保持カム（６）が形成カム（３）よりも更にワーク取付台（２）の下部に固定され、その角度保持カム（６）と当接する角度保持用ローラー（７）を上部先端に取付け且つ刃物台（５）を支持する刃物台支持盤（８）が配置され、刃物台（５）を回動可能にさせるための回動手段（９）が刃物台支持盤（８）の下部に設けられた構造とすることにより、円形又は長方形に近い曲線或いは波形状の曲線の加工が１本のバイト（１１）で行えると共にバイト（１１）の切換えがないので、仕上面全体が滑らかで且つ仕上精度の高い良好な仕上面が得られるものとなる。またバイト（１１）の取付部品やその制御が１つだけとなるため、構造が簡単で制御も容易なものとなり、コストダウンが可能となる。
【００１４】
請求項２のように刃物台（５）をワーク取付台（２）の両側に配置させることにより、図４（ａ）〜（ｅ）のような形状のワーク（Ｗ）のバリ取り加工が一気に終了出来ると共にワーク（Ｗ）の両側には均等な切削負荷が掛るので、ワーク（Ｗ）の歪が減少され、強度の小さな素材の成型品でも容易にバリ取り加工が行える量産に最適なものとなり、且つ加工時間が短縮出来るものとなる。
【００１５】
請求項３に示すように回動手段（９）として、刃物台支持盤（８）の下部と一端を固定した軸（９１）と、該軸（９１）を軸支する軸受（９２）と、軸（９１）の他端に固定させて突出する突起（９３）と、該突起（９３）の先端部に連結させたエアーシリンダー（９４）とから少なくとも成されたものを用いることにより、角度保持カム（６）によって最適なバイト（１１）の切削角度を常時所定角度に保持することが可能となる。しかも構造が簡単であるため、長期間に渡ってずれることなく所定角度の維持が出来るものとなる。
【図面の簡単な説明】
【図１】本発明の実施形態の要部を示す説明図である。
【図２】本実施形態の正面要部を示す説明図である。
【図３】本実施形態の形成カムと角度保持カムによるバイトの動きを示す説明図である。
【図４】本実施形態によって切削出来る異形なワーク形状の例を示す説明図である。
【図５】異形なワーク形状を切削する際、本発明品と従来品を比較した説明図である。
【符号の説明】
１　基台
２　ワーク取付台
３　形成カム
４　形成用ローラー
５　刃物台
６　角度保持カム
７　角度保持用ローラー
８　刃物台支持盤
９　回動手段
９１　軸
９２　軸受
９３　突起
９４　エアーシリンダー
１１　バイト
Ｗ　ワーク[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a case where a molded product having a deformed and curved surface or a curved surface such as a frame or a housing of a liquid crystal screen of a portable telephone or a notebook personal computer, an instrument cover of an automobile, a household electric appliance, etc. is machined and the periphery thereof is cut and finished. TECHNICAL FIELD The present invention relates to a deburring device for an outer periphery of a molded product used in the present invention, and particularly to a deburring device for an outer peripheral portion of a molded product for cutting and finishing a molding burr or a gate on an outer peripheral portion of a deformed and thin molded product.
[0002]
[Prior art]
Generally, when finishing the outer periphery of molded products with irregular shapes and curved surfaces or curves, deburring is performed by manually removing molding burrs and gates to some extent with nippers or electric cutting tools, and then finishing them with a file or sandpaper. Had been done. However, when hand tools are used, the efficiency is extremely poor, the dimensional accuracy is poor, and many defective products are produced, so that stable production cannot be performed and profitability is not good. In addition, when using a rotary blade such as an end mill, blurring and chattering occurred, the precision of the finished surface was deteriorated, and the material surface of the work escaped or chipped, and the rotary blade bitten and it was easy to make a defective product. The accuracy was unstable and the product yield was poor. Moreover, at this time, dust is generated, so that the working environment is poor. Especially when performing peripheral finishing of molded products with irregular shapes, curved surfaces, curved lines and thin-walled products, the molded products are likely to bend, warp, crack or crack during processing, so concentrate the work It had to be performed, and it was troublesome and workability was poor.
[0003]
In addition, as a deburring device for the outer periphery which automatically cuts and finishes the outer periphery of the molded product or the like by machining, a milling machine equipped with a copying device, an NC machine tool, or the like is used. When deburring a molded product with a low strength itself such as a molded product of synthetic resin or rubber, a rotating blade such as an end mill attached to the peripheral deburring device touches the material surface, Rotary blades were easily cut into the surface and seizure was likely to occur. Also, when using a rotary tool such as an end mill, vibration and noise were generated due to the rotation of the motor. Further, when a thin molded product or the like is cut by the rotary blade, the material surface of the work escapes or is chipped, so that defective products are easily produced. In addition, when an NC machine tool is used, equipment costs and maintenance costs are high, skilled programmers must be hired, and it is difficult for micro enterprises to purchase an NC machine tool. In addition, when deburring the outer periphery of a magnesium alloy product made of non-ferrous metal, if powder chips such as a grinder are precipitated, magnesium chips may ignite or a rotating blade such as an end mill may be used. If the amount of cutting is small even if the cutting is performed, magnesium chips will easily ignite, and the surrounding oil etc. may ignite and cause a fire, cutting conditions are extremely difficult, and deburring for mass production Was difficult to secure. For this reason, there has been no machined outer peripheral deburring of a magnesium alloy product.
[0004]
For this reason, the present inventor performs deburring by machining and improves dimensional accuracy, which is optimal for deburring for mass production, can perform processing without causing distortion in the work, and extends the blade replacement period. Japanese Patent Application No. Hei 11-340585, Japanese Patent Application No. 11-340585, which reduces the processing cost, and enables the peripheral finish processing of magnesium alloy products to be performed with high precision and safety, and enables the deburring work by machining. This is proposed in Japanese Patent Application No. Hei 11-363893 and Japanese Patent Application No. Hei 11-363899. The structure of Japanese Patent Application No. 11-340585 is a structure in which the work rotates and the blade moves left and right. The structure of Japanese Patent Application No. 11-363893 has a structure in which the work moves back and forth and the blade moves left and right. Further, the structure of Japanese Patent Application No. 11-363899 has a structure in which a workpiece is fixed and a blade moves back and forth and left and right.
[0005]
[Problems to be solved by the invention]
However, Japanese Patent Application No. 11-340585 is suitable for processing a curve close to a circle, and it is difficult to process a shape other than that shown in FIG. Japanese Patent Application No. 11-363893 and Japanese Patent Application No. 11-363899 are suitable for processing a curve close to a rectangle, and it is possible to finish the outer periphery of a workpiece having a shape as shown in FIGS. However, it was difficult to process a wave-shaped curve as shown in FIG. When performing the above processing, for example, when performing the outer peripheral finishing of a workpiece having a shape as shown in FIG. 4 (e), generally, A, B, and C are used by using three cutting tools as shown in FIG. 5 (b). Section is reciprocated by each of the cutting tools 1, 2, 3 so that the driving mechanism is complicated, and it is difficult to adjust the step so as to eliminate the step on the finished surface at the switching position of the cutting tool and to maintain the surface accuracy. Met. At this time, if machining is performed with only the cutting tool 1 in front, section A can be cut well and section B can be cut, but the cutting angle is bad, so chattering occurs and it is difficult to obtain a beautiful finished surface. However, there is a possibility that the cut surface of the cutting tool 1 does not hit and the escape portion hits.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a deburring apparatus for an outer periphery of a molded product that can process a curve or a wave-like curve close to a circle or a rectangle with a single cutting tool and has a good finished surface.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has been made, that is, a molding is performed in which a workpiece is mounted on a workpiece mounting base having a forming cam fixed to a lower portion, and the workpiece is moved back and forth to cut an outer periphery thereof. In the deburring device for the outer periphery of the product, an angle holding cam for always maintaining the cutting angle of the cutting tool attached to the tool post at a predetermined angle with respect to the outer periphery of the work is provided further below the work mounting base than the forming cam. A tool rest support plate that is fixed and has an angle holding roller that is in contact with the angle holding cam attached to the upper end and that supports the tool rest is disposed, and a turning means for enabling the tool rest to rotate is a tool rest support. The structure shall be provided at the bottom of the panel. Further, it is preferable to arrange the tool post on both sides of the work mounting table, and as the rotating means, a shaft fixed to the lower portion and one end of the tool post support plate, a bearing supporting the shaft, and fixed to the other end of the shaft It is preferable to use at least a projection formed by projecting and an air cylinder connected to the tip of the projection and arranged on the base.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 are views showing an embodiment of the present invention, and the description will be made based on this. (1) is a double base of the present apparatus, and (2) is a metal work mount for moving the center of the base (1) back and forth by a feeding cylinder (not shown). The shape of the mounting base (2) is formed according to the shape inside the work (W). Reference numeral (3) denotes a forming cam integrally formed on both lower sides of the work mounting table (2). The forming cam (3) has a shape which is a reference for an outer peripheral finish dimension of the work (W). Has been quenched. The forming cam (3) may be fixed to the work mounting table (2) by bolts and may be replaceably mounted. (4) is a rotatable forming roller abutting on the outer periphery of the forming cam (3). Reference numeral (5) denotes a tool rest on which the forming roller (4) is attached at the lower end thereof, and the tool rest (5) is arranged on both sides of the work attaching stand (2) so as to be movable left and right. The work mount (2), the forming cam (3), the forming roller (4), and the tool rest (5) are components used in Japanese Patent Application No. 11-363893 proposed by the present inventors. It is good to use the same structure. Further, the tool rest (5) is not necessarily arranged on both sides of the work mount (2), but may be arranged only on one side. At this time, one side of the forming cam (3) and the forming roller (4) is unnecessary, and one side of each of components described later attached to the tool rest (5) is also unnecessary.
[0009]
(6) is an angle holding cam fixed to the lower part of the work mounting base (2) and further below both sides of the forming cam (3). The cutting angle of the cutting tool (11) attached to (5) is always maintained at a predetermined angle. The angle holding cam (6) may be fixed to the work mounting table (2) by bolts and may be replaceably mounted. (7) is an angle holding roller abutting on the angle holding cam (6), and (8) is for attaching the angle holding roller (7) to the upper end and supporting the tool rest (5). It is a tool post support board arranged. (9) is a turning means attached to the lower part of the tool post support board (8) and enabling the tool post (5) to turn, and the turning means (9) is provided with the tool post support board. A shaft (91) having a lower part and one end fixed to (8), a bearing (92) supporting the shaft (91) and being fixed to the base (1); and a second end of the shaft (91). The projection (93) includes a projection (93) that is fixed and protrudes, and an air cylinder (94) connected to the tip of the projection (93) and disposed on the base (1). In addition, a constant pressing force is continuously applied to the protrusion (93) by the air cylinder (94). Reference numeral (10) denotes a horizontal moving means for moving the tool post (5) right and left and biasing it with a constant pressing force. The horizontal moving means (10) is connected to the rear end of the tool post (5). A pressurizing air cylinder mounted on the upper surface of the tool rest support plate (8), and a guide member using a rolling bearing for smoothly sliding the tool rest (5). You can use it. Further, the guide member is not limited to the above-described one, and may have a structure including a track and a guide portion. (12) is a work holding means provided for holding the work (W) from above.
[0010]
Next, the operation of the present invention will be described. The tool (11) is mounted on the left and right tool rests (5) in advance, and the work (W) is placed on the work mount (2) and the work holding means (12) presses down substantially the entire upper surface of the work (W). Keep it fixed. Then, it is previously moved from the position of FIG. 3B to the position of FIG. First, the work mounting table (2), on which the work (W) is mounted, is moved from the state of FIG. 3A to the state of FIG. At this time, the forming roller (4) slides while being abutted along the forming cam (3) and moves to the center on the tool rest (5) by the pressing cylinder of the horizontal moving means (10) arranged on the left and right. Since a constant pressing force is applied to the tool post (5), the cutting tool (11) attached to the tool rest (5) moves as shown by a two-dot chain line in the figure and cuts at a stroke. Further, at this time, the angle holding roller (7) slides while being in contact with the angle holding cam (6), and the protrusion ( 93) is rotated as shown by the arrow in the drawing, and a constant pressing force is applied to the projection (93). Therefore, the cutting angle of the cutting tool (11) is always maintained at a predetermined angle, and the work ( The finished state of the outer peripheral surface of W) becomes good. When the outer periphery of the work (W) is cut, the bite (11) may be made to bite by about 0.5 mm.
[0011]
A case where the present invention performs deburring of a work (W) shown in FIG. 4 (e) with one bite (11) will be described based on FIG. 5 (a). First, the tip of the cutting tool (11) bites into the work (W) by the horizontal moving means (10), and the cutting edge is tilted clockwise by the rotating means (9), so that the cutting tool (11) is substantially perpendicular to the outer shape of the work (W). The curve of section A is cut while maintaining the angle of. At this time, the movement of the work (W) gradually moves rightward while rotating. Next, when reaching the section B, the cutting tool (11) moves in the front-rear direction while applying a constant pressing force from the lateral direction, and cuts a plane. When reaching the section C, the cutting edge of the cutting tool (11) tilts to the left and moves to the left to cut the curve of the section C, thereby completing the deburring. At this time, since the lateral direction of the cutting tool (11) is regulated by the forming cam (3) and the inclination of the cutting tool (11) is regulated by the angle holding cam (6), deburring is performed at an optimum cutting angle. Can be done. Therefore, by disposing the tool rest (5) on both sides and moving the work (W) in the front-rear direction, the deburring process having the shapes shown in FIGS. 4A to 4E is completed at a stretch. Also, in the present invention, as in Japanese Patent Application No. 11-363893, the work mounting table (2) moves smoothly while sliding back and forth, so that vibration and noise are not generated and the manufacturing cost is low. At the same time, the heat generated by cutting is extremely low, and there is almost no risk of magnesium chips being ignited. The outer peripheral finishing of magnesium alloy products can be easily performed by machining, and mass production of deburring is possible. Precision machining is now possible.
[0012]
【The invention's effect】
The present invention having the above-described configuration has the following effects.
[0013]
A workpiece (W) is mounted on a workpiece mounting base (2) having a forming cam (3) fixed to a lower portion as in claim 1, and the workpiece (W) is moved back and forth to cut the outer circumference of a molded product. In the deburring apparatus for use, an angle holding cam (6) for constantly holding a cutting angle of a cutting tool (11) attached to a tool post (5) at a predetermined angle with respect to the outer periphery of a work (W) is formed cam. A blade fixed to the lower part of the work mounting base (2) further than (3) and having an angle holding roller (7) abutting on the angle holding cam (6) attached to the upper end and supporting the tool base (5). The turret support plate (8) is arranged, and a rotating means (9) for rotating the turret (5) is provided at a lower portion of the turret support plate (8). Or, processing of a curve close to a rectangle or a wave-shaped curve is performed with one tool (1 Since there is no switching of bytes (11) together with the performed in), and that high overall finished surface is smooth and and finishing accuracy good finished surface is obtained. Also, since only one attachment part and control of the cutting tool (11) are required, the structure is simple and the control is easy, so that the cost can be reduced.
[0014]
By arranging the tool rest (5) on both sides of the work mount (2) as in claim 2, deburring of the work (W) having a shape as shown in FIGS. Since the work can be completed and an equal cutting load is applied to both sides of the work (W), the distortion of the work (W) is reduced, making it ideal for mass production where deburring can be easily performed even with a molded product of a low-strength material. In addition, the processing time can be reduced.
[0015]
As a rotating means (9), a shaft (91) having a lower part and one end fixed to a tool rest support plate (8), and a bearing (92) for supporting the shaft (91), By using at least the projection (93) fixed to the other end of the shaft (91) and the air cylinder (94) connected to the tip of the projection (93), the angle is maintained. The cam (6) makes it possible to always maintain the optimum cutting angle of the cutting tool (11) at a predetermined angle. In addition, since the structure is simple, it is possible to maintain the predetermined angle without shifting over a long period of time.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a main part of an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a main part of the front of the embodiment.
FIG. 3 is an explanatory diagram showing the movement of a cutting tool by a forming cam and an angle holding cam according to the embodiment.
FIG. 4 is an explanatory diagram showing an example of an irregular work shape that can be cut by the present embodiment.
FIG. 5 is an explanatory diagram comparing a product of the present invention with a conventional product when cutting an irregular workpiece shape.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 base 2 work mount 3 forming cam 4 forming roller 5 turret 6 angle holding cam 7 angle holding roller 8 turret support board 9 rotating means 91 shaft 92 bearing 93 protrusion 94 air cylinder 11 byte W Work

Claims

A work mount (2) that moves back and forth in the center of the base (1) is provided, and a forming cam (3) serving as a reference for the outer peripheral finish dimension of the work (W) is provided below the work mount (2). A molded product in which a forming roller (4) that is fixed and abuts against a forming cam (3) is attached to a lower end and a tool rest (5) that moves left and right is disposed on at least one side of the work mounting base (2). In the outer peripheral deburring apparatus, the cutting angle of the cutting tool (11) to be attached to the tool rest (5) with respect to the outer periphery of the work (W) is always predetermined below the forming cam (3). An angle holding cam (6) for holding at an angle is fixed to the work mount (2), and an angle holding roller (7) abutting on the angle holding cam (6) is attached to an upper end and the tool rest is provided. A tool rest support plate (8) for supporting (5) is arranged, Serial tool post (5) molding the outer circumference for deburring device, characterized in that provided below the rotating means (9) is the tool post support plate (8) for causing the pivotable.

The apparatus according to claim 1, wherein the tool rest (5) is disposed on both sides of the work mount (2).

A shaft (91) having a lower end and one end fixed to the tool rest support plate (8), and a bearing supporting the shaft (91) and being fixed to the base (1); (92), a projection (93) that is fixed to the other end of the shaft (91) and protrudes, and an air cylinder (11) connected to the tip of the projection (93) and arranged on the base (1). 94. The deburring apparatus for an outer periphery of a molded product according to claim 1, which is at least composed of: