Different-diameter guiding combined cutting tap or combined cutting cone

Abstract

The invention discloses a different-diameter guiding combined cutting tap or combined cutting cone which comprises screw blades and a screw shank. The different-diameter guiding combined cutting tap or combined cutting cone is characterized in that an anti-crack slitting table or anti-crack guided cutting table is arranged on the cutting edge surface of each anti-crack screw blade of the tap or cone, the relationship between the height of each anti-crack slitting table or efficient slitting table and the height of an inside adjacent efficient slitting table is defined as the formula that the heights of the anti-crack slitting table or efficient slitting table and the inside adjacent efficient slitting table are calculated by multiplying a feed amount by a product, the cutting feed amount is small while the multiplied product is large when a workpiece is high in hardness or viscosity while a cutter is large, the cutting feed amount is small while the multiplied product is large when the workpiece is high in hardness or viscosity while the cutter is small, the cutting feed amount is large while the multiplied product is small when the workpiece is low in hardness or viscosity while the cutter is large, and the cutting feed amount is large while the multiplied product is small when the workpiece is low in hardness or viscosity while the cutter is small.

Description

technical field [0001] The invention relates to a split-diameter-guided compound cutting tap or a compound cutting cone, in particular to a split-diameter-guided compound cutting tap or a compound cutting cone. Background technique: [0002] At present, the spiral taps or compound cutting cones or straight flute taps or compound cutting cones used in machining are composed of a thread body and a thread handle, and the thread body is composed of a thread strip and a cutting edge surface, a thread edge, chamfer, The chamfering edge and other components, the thread edge, the cutting edge surface of the chamfering edge is roughly on a curved surface or the same helicoidal surface, and the line connecting the bottom of each thread blade is roughly on a straight line or spiral, because the thread at the chamfer The distance from the top to the bottom of the wire is too small to play a guiding role. As a result, tapping becomes reaming, causing the workpiece to be scrapped. Moreove...

AI Technical Summary

Problems solved by technology

[0002] At present, the spiral taps or compound cutting cones or straight flute taps or compound cutting cones used in machining are composed of a thread body and a thread handle, and the thread body is composed of a thread strip and a cutting edge surface, a thread edge, chamfer, The chamfering edge and other components, the thread edge, the cutting edge surface of the chamfering edge is roughly on a curved surface or the same helicoidal surface, and the line connecting the bottom of each thread blade is roughly on a straight line or spiral, because the thread at the chamfer The distance from the top to the bottom of the wire is too small to play a guiding role. As a result, tapping becomes reaming, causing the workpiece to be scrapped. Moreover, since each group of wire edge surfaces is composed of a single surface, when the angle between the cutting edge surface and the wire top If it is too sharp, the thread blade is easy to break. For example, if the angle between the cutting edge surface and the thread top is too large, the torque between the thread handle and the clamping tool is too large, which will easily cause the overall fracture of the tap or the compound cutting cone in the workpiece, resulting in the quality of the workpiece being affected. damaged or scrapped

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