Straight Fluted Taps

straight fluted taps are used to attack the most common thread in the cut, the most commonly used thread cutter, straight fluted taps the trench cutting edge parallel to the tap axis, it is called straight fluted taps. Cut out in straight fluted taps rotational movement and the forward movement at the same time under the action of the internal thread.

Straight fluted taps generally can be divided into machine tap and hand tap. Machine Taps the molars usually refers to high-speed steel taps, mainly used in the machine upside cutting accuracy requirements or less tough material screw holes. Hand taps, generally refers to carbon tool steel or alloy tool steel (a small amount of high-speed steel) Rolling (or cut) Taps, mainly used in the accuracy of handmade attack cut and processed materials no special requirements for the screw holes.

Straight fluted taps are usually suitable for machining tough materials short hole (screw hole length L ≤ 1.5d) and chip brittle material is easily broken off the screw holes. Deep blind hole machining ductile materials discharged off chip is not fragile and difficult to calm crumbs slot, it will produce serious chip clogging,straight fluted taps cooling difficulties, fever and severe wear and tear, and even lead straight fluted taps stuck or broken. Straight fluted taps should therefore timely exit chip removal, not an attack in the end.

Play a decisive role in the cutting process: (1) the main angle of the cutting part; ② cutting edge rake angle; (3) the cutting part of the posterior horn; the ④ groove cross-sectional shape.

Decision straight fluted taps thread elements: ① pitch; the ② thread angle; (3) large diameter screw; ④ in diameter; ⑤ trails; ⑥ Trail helix angle.

Straight fluted taps basic structure as shown.

Straight Flutes Taps Basic Structure

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