JP3821769B2 - Deburring device for outer periphery of molded products - Google Patents

Deburring device for outer periphery of molded products Download PDF

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Publication number
JP3821769B2
JP3821769B2 JP2002282780A JP2002282780A JP3821769B2 JP 3821769 B2 JP3821769 B2 JP 3821769B2 JP 2002282780 A JP2002282780 A JP 2002282780A JP 2002282780 A JP2002282780 A JP 2002282780A JP 3821769 B2 JP3821769 B2 JP 3821769B2
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mounting base
work
outer periphery
tool
cam
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JP2004114252A (en
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喜義 井上
謙二 勝呂
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株式会社スグロ鉄工
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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]
BACKGROUND OF THE INVENTION
The present invention is used when machining a molded product having a curved surface or curved shape such as a frame or housing of a liquid crystal screen of a portable telephone or a notebook computer, an automobile instrument cover, or a home appliance, and cutting the periphery of the molded product. More particularly, the present invention relates to a deburring device for outer periphery of a molded product for cutting and finishing a molding burr and a gate of an outer peripheral portion of a molded product having a thin shape.
[0002]
[Prior art]
In general, when performing outer peripheral finishing of molded products with irregular shapes such as curved surfaces and curves, deburring is performed by manually removing molded burrs and gates to some extent with nippers and electric cutting tools, and then finishing them with a file or sandpaper. Was done. However, when using a hand tool, the efficiency is very poor, the dimensional accuracy is poor, and many defective products are produced, so that stable production is not possible and profitability is not good. In addition, when using a rotary blade such as an end mill, blurring and chatter occur, the finished surface accuracy deteriorates, the workpiece surface of the workpiece escapes and chipped, and the rotary blade easily bites into a defective product. The accuracy was unstable and the product yield was poor. In addition, since dust is generated at this time, the working environment is poor. In particular, when performing outer peripheral finishing of molded products that are curved and curved with thin shapes, the molded product tends to bend, warp, crack, or crack during processing, so concentrate your work. It had to be done and it took a lot of work and the workability was bad.
[0003]
In addition, as a peripheral deburring device for automatically cutting and finishing the outer periphery of the molded product or the like by machining, a mill or NC machine tool equipped with a copying device is used. When a deburring process is performed on a molded product with a low strength of the material itself in a molded product or a molded product of synthetic resin or rubber, when a rotary blade such as an end mill attached to a deburring device for the outer periphery is applied to the material surface, The rotary blade was bitten and seizure was likely to occur. In addition, when using a rotary tool such as an end mill, vibration and noise were generated by the rotation of the motor. Further, when a thin molded product or the like is cut with the rotary blade, the material surface of the workpiece is escaped or chipped, and it is easy to produce a defective product. Moreover, in the case of using an NC machine tool, a large amount of equipment and maintenance costs are required, a skilled programmer must be employed, and it is difficult for a micro enterprise to purchase an NC machine tool. Moreover, when performing deburring of magnesium alloy products in non-ferrous metals, if powdered chips such as grinder processing are deposited, magnesium chips may ignite or rotary blades such as end mills. If the cutting amount is too small, the magnesium chips will easily ignite, and the surrounding oil may catch fire and cause a fire, cutting conditions are very difficult, and deburring for mass production. It was difficult to ensure safety. For this reason, the peripheral deburring of magnesium alloy products has not been performed by machining.
[0004]
For this reason, the present inventor performs deburring by machining and improves dimensional accuracy, is optimal for deburring processing for mass production, can be processed without distortion in the workpiece, and the blade replacement period is extended. Japanese Patent Application No. 11-340585, Japanese Patent Application No. 11-340585, a patent application for reducing the machining cost and further enabling peripheral finishing of magnesium alloy products with high precision and safety, and cutting deburring by machining. This is the place proposed in Japanese Patent Application No. 11-363893 and Japanese Patent Application No. 11-363899. The structure of Japanese Patent Application No. 11-340585 is a structure in which the work rotates and the cutter 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 tool moves left and right. Furthermore, the structure of Japanese Patent Application No. 11-363899 was such that the workpiece was fixed and the cutter moved 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 has been difficult to process shapes other than those shown in FIG. Japanese Patent Application No. 11-363893 and Japanese Patent Application No. 11-363899 are suitable for machining 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. 4 (b) to 4 (e). However, it has been difficult to process a waveform having a waveform as shown in FIG. Further, when performing the above-described machining, for example, when a workpiece having a shape as shown in FIG. 4 (e) is to be finished, generally three cutting tools are used as shown in FIG. 5 (b). Since the section is reciprocated by each of the cutting tools 1, 2, and 3, the driving mechanism is complicated, and it is difficult to make adjustments so as to eliminate the level difference of the finished surface at the switching position of the cutting tool and maintain the surface accuracy. Met. If only the cutting tool 1 is used at this time, the A section is good and the B section can be cut, but the cutting angle is bad, so chattering occurs and it is difficult to obtain a clean finish surface. There was a risk that the cutting surface of the cutting tool 1 would not hit and the escape portion would hit.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a deburring device for the outer periphery of a molded product that can process a curved line close to a circle or a rectangle or a wave-shaped curve with a single cutting tool and has a good finished surface.
[0007]
[Means for Solving the Problems]
The present invention has been made to solve the above problems, that is, a molding in which a work is mounted on a work mounting base having a forming cam fixed to the lower part, and the work is moved back and forth to cut the 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 rest at a predetermined angle with respect to the outer periphery of the work is further below the forming cam than the forming cam. A turret support plate that supports the turret is mounted with an angle holding roller that is fixed and abuts the angle holding cam at the upper end, and a turret support for rotating the turret is provided. A structure is provided at the bottom of the board. In addition, the tool post may be arranged on both sides of the work mounting base, and as a rotating means, the lower part and one end of the tool post supporting plate are fixed, the bearing that supports the shaft, and the other end of the shaft. It is preferable to use at least a protrusion that protrudes and an air cylinder that is connected to the tip of the protrusion and disposed on the base.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 and FIG. 2 are diagrams showing an embodiment of the present invention, which will be described based on this. (1) is a base of the present apparatus formed in a double, (2) is a metal work mounting base that moves back and forth in the center of the base (1) by a feeding cylinder (not shown). The shape of the mounting base (2) is formed in accordance with the shape inside the workpiece (W). (3) is a forming cam integrally formed on both lower sides of the work mounting base (2), and the forming cam (3) has a shape that serves as a reference for the outer peripheral finish dimension of the work (W). Has been quenched. The forming cam (3) may be fixed to the work mounting base (2) with a bolt and attached in a replaceable manner. (4) is a rotatable forming roller in contact with the outer periphery of the forming cam (3). (5) is a tool post in which the forming roller (4) is attached to the lower end, and the tool post (5) is arranged on both sides of the work mounting base (2) so as to be movable left and right. The workpiece mounting base (2), the forming cam (3), the forming roller (4), and the tool post (5) are parts used in Japanese Patent Application No. 11-363893 proposed by the present inventor. It is recommended to use the same structure as The tool post (5) is not necessarily arranged on both sides of the work mounting base (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 component to be described later attached to the tool post (5) is also unnecessary.
[0009]
(6) is an angle holding cam fixed to the lower part of the work mounting base (2) and on both lower sides of the forming cam (3). The cutting angle of the cutting tool (11) attached to (5) is always kept at a predetermined angle. The angle holding cam (6) may be fixed to the work mounting base (2) with a bolt and attached in a replaceable manner. (7) is an angle holding roller that comes into contact with the angle holding cam (6), and (8) is for attaching the angle holding roller (7) to the upper end and supporting the tool post (5). It is the arranged tool post support board. (9) is a rotating means that is attached to the lower part of the tool post supporting plate (8) and that allows the tool post (5) to turn. The rotating means (9) is the tool post supporting plate. A shaft (91) having a lower end and one end fixed to (8), a bearing (92) supporting the shaft (91) and fixed to the base (1), and the other end of the shaft (91) A protrusion (93) that is fixed and protrudes, and an air cylinder (94) that is connected to the tip of the protrusion (93) and disposed on the base (1), and the like. A constant pressing force is continuously applied to the protrusion (93) by the air cylinder (94). (10) is a horizontal moving means for moving the tool post (5) left and right and urging it with a constant pressing force. The horizontal moving means (10) is connected to the rear end of the tool post (5). And a press air cylinder attached to 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). Use it. 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 pressing means provided for pressing the work (W) from above.
[0010]
Next, the operation of the present invention will be described. First, attach the cutting tool (11) to the left and right tool rests (5), place the work (W) on the work mounting base (2), and press the entire upper surface of the work (W) with the work holding means (12). Keep it fixed. And it is moved beforehand from the position of FIG. 3B to the position of FIG. First, the work mounting base (2) on which the work (W) is mounted by unillustrated feeding means is moved back and forth at once from the state of FIG. 3 (a) to (b) as indicated by the white arrow in the figure. At this time, the forming roller (4) slides while being abutted along the forming cam (3) and is moved to the center by the pressing cylinder of the horizontal moving means (10) arranged on the left and right. Since a constant pressing force is applied in the direction, the cutting tool (11) attached to the tool post (5) moves as shown by a two-dot chain line in the drawing and cuts at once. Further, at this time, the angle holding roller (7) slides while being in contact with the angle holding cam (6), and the protrusion (by the expansion and contraction of the air cylinder (94) of the rotating means (9) arranged on the left and right. 93) is rotated as shown by the arrow in the figure, and a constant pressing force is applied to the projection (93), so that the cutting angle of the cutting tool (11) is always maintained at a predetermined angle, and the workpiece ( This is because the finished state of the outer peripheral surface of W) becomes good. It should be noted that when the outer periphery of the workpiece (W) is cut, the cutting tool (11) should bite in about 0.5 mm.
[0011]
Based on FIG. 5A, the case where the present invention performs the deburring process of the workpiece (W) shown in FIG. First, the tip of the cutting tool (11) bites into the workpiece (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 workpiece (W). The curve of the A section is cut while the angle is maintained. At this time, the movement of the work (W) gradually moves rightward while rotating. Next, when the section B is reached, the cutting tool (11) moves in the front-rear direction with a constant pressing force applied from the lateral direction to cut the plane. When reaching the C section, the cutting edge of the cutting tool (11) is tilted to the left and moved to the left while cutting the curve in the C section to complete the deburring process. At this time, since the horizontal 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. Accordingly, the turret (5) is arranged on both sides and the workpiece (W) is moved in the front-rear direction, whereby the deburring process having the shape as shown in FIGS. 4 (a) to 4 (e) is completed at once. Further, in the present invention, similarly to Japanese Patent Application No. 11-363893, the work mounting base (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, there is very little heat generated by cutting, there is almost no risk of ignition of magnesium chips, magnesium alloy products can be easily machined by machining, and mass-production deburring is possible. Precision machining is possible.
[0012]
【The invention's effect】
The present invention is configured as described above and has the effects described below.
[0013]
The outer periphery of the molded product in which the workpiece (W) is mounted on the workpiece mounting base (2) with the forming cam (3) fixed to the lower portion as in claim 1 and the outer periphery is cut by moving the workpiece (W) back and forth. In the deburring device, the angle holding cam (6) for always holding the cutting angle of the cutting tool (11) attached to the tool post (5) at a predetermined angle with respect to the outer periphery of the work (W) is a forming cam. A tool that is fixed to the lower part of the work mounting base (2) and is attached to the angle holding cam (6) at the upper end and supports the tool rest (5). By providing a structure in which the pedestal support plate (8) is arranged and a rotating means (9) for making the turret (5) rotatable is provided at the lower part of the turret support plate (8), a circular shape is obtained. Alternatively, a single bite (11) can be used to process a curve close to a rectangle or a wave-shaped curve. Since there is no switching of bytes 11 together, it becomes a high good surface finish entire finished surface is smooth and and finishing accuracy. Further, since there is only one attachment part of the cutting tool (11) and its control, the structure is simple and the control is easy, and the cost can be reduced.
[0014]
By arranging the tool post (5) on both sides of the work mounting base (2) as in claim 2, deburring of the work (W) having a shape as shown in FIGS. Since it can be finished and a uniform cutting load is applied to both sides of the workpiece (W), the distortion of the workpiece (W) is reduced, making it ideal for mass production that can be easily deburred even with molded products of low strength. And processing time can be shortened.
[0015]
As a turning means (9) as shown in claim 3, as a rotating means (9), a shaft (91) having a lower end and one end fixed to the tool rest support plate (8), a bearing (92) supporting the shaft (91), The angle is maintained by using at least a projection (93) fixed to the other end of the shaft (91) and an air cylinder (94) connected to the tip of the projection (93). The cam (6) makes it possible to always keep the optimum cutting angle of the cutting tool (11) at a predetermined angle. Moreover, since the structure is simple, the predetermined angle can be maintained without being displaced for 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 front main part of the present embodiment.
FIG. 3 is an explanatory view showing the movement of the cutting tool by the forming cam and the angle holding cam of the embodiment.
FIG. 4 is an explanatory diagram showing an example of an irregular workpiece shape that can be cut according to the present embodiment.
FIG. 5 is an explanatory diagram comparing the product of the present invention and a conventional product when cutting an irregular workpiece shape.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 2 Work mounting base 3 Forming cam 4 Forming roller 5 Tool post 6 Angle holding cam 7 Angle holding roller 8 Tool post supporting board 9 Turning means
91 axes
92 Bearing
93 Protrusion
94 Air cylinder
11 bytes W Work

Claims (3)

基台(1)の中央を前後移動するワーク取付台(2)を設け、該ワーク取付台(2)の下部には、ワーク(W)の外周仕上げ寸法の基準になる形成カム(3)を固定し、その形成カム(3)に当接させる形成用ローラー(4)を下部先端に取付け且つ左右移動する刃物台(5)が前記ワーク取付台(2)の少なくとも片側に配置された成型品の外周用バリ取り装置に於いて、前記形成カム(3)よりも更に下部には、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)が前記ワーク取付台(2)に固定され、その角度保持カム(6)に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前記刃物台(5)を支持する刃物台支持盤(8)が配置され、前記刃物台(5)を回動可能にさせるための回動手段(9)が前記刃物台支持盤(8)の下部に設けられたことを特徴とする成型品の外周用バリ取り装置。A work mounting base (2) that moves back and forth in the center of the base (1) is provided, and a forming cam (3) that serves as a reference for the outer peripheral finish dimension of the work (W) is provided at the lower part of the work mounting base (2). Molded product in which a tool post (5) that is fixed and attached to the lower end of the forming roller (4) to be brought into contact with the forming cam (3) and moved to the left and right is disposed on at least one side of the work mounting base (2). In the outer peripheral deburring device, the cutting angle of the cutting tool (11) attached to the tool post (5) is always predetermined below the forming cam (3) with respect to the outer periphery of the work (W). An angle holding cam (6) for holding at an angle is fixed to the work mounting base (2), and an angle holding roller (7) contacting the angle holding cam (6) is attached to the upper end and the tool post A tool post supporting plate (8) for supporting (5) is arranged, and the blade A deburring device for the outer periphery of a molded product, characterized in that a rotating means (9) for making the pedestal (5) rotatable is provided at the lower part of the turret support plate (8). 前記刃物台(5)が、前記ワーク取付台(2)の両側に配置された請求項1記載の成型品の外周用バリ取り装置。The deburring device for outer periphery of a molded article according to claim 1, wherein the tool post (5) is arranged on both sides of the work mounting base (2). 前記回動手段(9)が、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)とから少なくとも成された請求項1記載の成型品の外周用バリ取り装置。The rotating means (9) includes a shaft (91) having a lower end and one end fixed to the tool rest support plate (8), and a bearing that supports the shaft (91) and is fixed to the base (1). (92), a protrusion (93) that is fixed and protrudes to the other end of the shaft (91), and an air cylinder that is connected to the tip of the protrusion (93) and disposed on the base (1) ( 94) The deburring device for the outer periphery of a molded product according to claim 1, comprising at least 94.
JP2002282780A 2002-09-27 2002-09-27 Deburring device for outer periphery of molded products Expired - Lifetime JP3821769B2 (en)

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