【００１１】
【課題を解決するための手段】
本発明の請求項１の金属切屑減容機は、上面を開放した水平円筒状本体内に少なくとも両端部を軸支してモータで駆動する回転軸と、回転軸の両端側から中央部へ金属切屑を送り込み可能にするため回転軸の表面に設けた両端からの巻き方向の異なる一対のスクリュー刃と、回転軸の中央部に配設した押し切り刃と、押し切り刃と対をなし本体側に設けた固定刃と、回転軸の中央部付近の本体下面に多数穿孔配置した排出孔とを有する金属切屑減容機において、押し切り刃は、回転軸に周設するリングでその外周面に形成した２ケ所の断面矩形の凹部の回転方向の後端に切刃を配置した本体内面との隙間が僅かとなる外径を有し、排出孔は押し切り刃を設ける中央部の剪断領域のみに配置したことを特徴とする。
[0011]
[Means for solving the problem]
The metal chip volume reducer of claim 1 of the present invention is a metal chip volume reducer having a rotating shaft journaled at least at both ends within a horizontal cylindrical body with an open top and driven by a motor, a pair of screw blades with different winding directions from both ends provided on the surface of the rotating shaft to enable metal chips to be fed from both ends of the rotating shaft to the center, a push-cutting blade arranged in the center of the rotating shaft , a fixed blade paired with the push-cutting blade and provided on the main body side, and a number of discharge holes drilled and arranged on the underside of the main body near the center of the rotating shaft , characterized in that the push-cutting blade has an outer diameter that allows a small gap between the inner surface of the main body on which the cutting blade is arranged and the rear end in the rotational direction of two rectangular cross- sectional recesses formed on the outer peripheral surface of a ring attached to the rotating shaft , and the discharge holes are arranged only in the shearing area in the center where the push-cutting blade is provided .
また、本発明の請求項２の金属切屑減容機は、上面を開放した水平円筒状本体内に少なくとも両端部を軸支してモータで駆動する回転軸と、回転軸の両端側から中央部へ金属切屑を送り込み可能にするため回転軸の表面に設けた両端からの巻き方向の異なる一対のスクリュー刃と、回転軸の中央部に配設した押し切り刃と、押し切り刃と対をなし本体側に設けた固定刃と、回転軸の中央部付近の本体下面に多数穿孔配置した排出孔とを有する金属切屑減容機において、押し切り刃は、回転軸に周設するリングでその外周面に形成した３ケ所以上の断面矩形の凹部の回転方向の後端に切刃を配置した本体内面との隙間が僅かとなる外径を有し、排出孔は押し切り刃を設ける中央部の剪断領域のみに配置したことを特徴とする。
In addition, the metal chip volume reducer of claim 2 of the present invention is a metal chip volume reducer having a rotating shaft journaled at least at both ends within a horizontal cylindrical body with an open top and driven by a motor, a pair of screw blades with different winding directions from both ends provided on the surface of the rotating shaft to enable metal chips to be sent from both ends of the rotating shaft to the center, a push-cutting blade arranged in the center of the rotating shaft , a fixed blade paired with the push-cutting blade and provided on the main body side , and a number of discharge holes drilled and arranged on the underside of the main body near the center of the rotating shaft , wherein the push-cutting blade has an outer diameter that allows a small gap between the inner surface of the main body on which the cutting blade is arranged and the rear end in the rotational direction of three or more rectangular cross- sectional recesses formed on the outer peripheral surface of a ring attached to the rotating shaft , and the discharge holes are arranged only in the shearing area in the center where the push-cutting blade is provided .
さらに、本発明の金属切屑減容機は、上述の各構成において、回転軸の表面に設けた両端からの巻き方向の異なる一対のスクリュー刃を、２組の２条のスクリュー刃としたことを特徴とする。このように、回転軸の中央部に金属切屑を送り込み可能に巻き方向の異なる各２条のスクリュー刃を回転軸に対向配置したことによって、切屑の中央部への搬送能力が向上すると共に、剪断領域での切屑処理能力が向上し、切屑全量を確実に所定寸法範囲に減容でき、圧空を利用して搬送する切粉の圧空搬送装置での搬送に支障を生じることはない。
Furthermore, the metal chip volume reducer of the present invention is characterized in that, in each of the above-mentioned configurations , the pair of screw blades wound in different directions from both ends and provided on the surface of the rotating shaft are replaced by two sets of two-thread screw blades. In this way, by arranging two screw blades with different winding directions facing each other on the rotating shaft so that metal chips can be fed to the center of the rotating shaft, the chip transport capacity to the center and the chip processing capacity in the shearing area are improved, and the volume of all chips can be reliably reduced to a predetermined size range without causing any problems in the transport of chips by a compressed air transport device that uses compressed air to transport the chips.