Novel integral-head three-blade drill bit

Novel integral-head three-blade drill bit

According to the novel integral-head three-edge drill bit, the three-edge drill bit is provided with a cutting part and a cutter handle part, the cutting part is provided with a center tip at the top end of the central axis, and the cutting part is rotationally and symmetrically provided with three...

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Hauptverfasser: YIN HUASHUI, LI BAJIN, WANG GUANGBING
Format: Patent
Sprache:chi ; eng
Schlagworte:
ACCESSORY MACHINES OR APPARATUS
NAILING OR STAPLING MACHINES IN GENERAL
PERFORMING OPERATIONS
SAFETY DEVICES, e.g. THOSE FOR SAWS
TRANSPORTING
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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creator YIN HUASHUI
LI BAJIN
WANG GUANGBING
description According to the novel integral-head three-edge drill bit, the three-edge drill bit is provided with a cutting part and a cutter handle part, the cutting part is provided with a center tip at the top end of the central axis, and the cutting part is rotationally and symmetrically provided with three sets of side edges and chisel edges relative to the central axis; the cutting part is provided with three groups of spiral cutting edges and spiral chip discharging grooves which are rotationally symmetrical about the central axis center; the three-edge drill bit is supported in three different directions during working, radial vibration of the three-edge drill bit is effectively restrained, cylindricity and surface smoothness of machined holes are improved, the service life of the gang drill is prolonged, the cutting depth of each group of spiral cutting edges or side edges is smaller, generated scrap iron is smaller and easy to discharge, and the service life of the gang drill is further prolonged. The threaded b
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subjects ACCESSORY MACHINES OR APPARATUS
NAILING OR STAPLING MACHINES IN GENERAL
PERFORMING OPERATIONS
SAFETY DEVICES, e.g. THOSE FOR SAWS
TRANSPORTING
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
title Novel integral-head three-blade drill bit
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