CN103706843A

CN103706843A - Combined-cutting drill bit

Info

Publication number: CN103706843A
Application number: CN201210394064.5A
Authority: CN
Inventors: 李仕清
Original assignee: 李仕清
Priority date: 2012-10-01
Filing date: 2012-10-01
Publication date: 2014-04-09

Abstract

The invention provides a combined-cutting drill bit which is high in efficiency, low in cost, long in service life and easy to position during drilling. The combined-cutting drill bit comprises a drill bit head. The combined-cutting drill bit is characterized in that on cutting faces facing the rotation direction, at least one level of various inner oblique cutting faces or combined cutting faces , at the bottom or on the lateral sides, are formed through triangular-groove-shaped, trapezoid-groove-shaped, arc-triangular-groove-shaped or arc-trapezoid-groove-shaped recesses or through arc protrusions or oblique protrusions, and an included angle larger than 90 degrees but smaller than 180 degrees is formed between each cutting face or combined cutting face and the corresponding inner oblique cutting face or combined cutting face; or, the arc protrusions or oblique protrusions vertically extend to form combined positioning and decomposing platforms intersecting with the combined cutting faces on the inner side, and various inner oblique blades, side recessed blades or side oblique blades are formed to enable the stress to incline towards the inner side during cutting, so that the arm of force is reduced and cutting resistance of the outer side is decomposed, cutting efficiency and service life of the drill bit reach the maximum values, cost is reduced, and resources are saved.

Description

A kind of drill bit cutter head of combined cut

Technical field:

The present invention relates to a kind of drill bit cutter head of combined cut, the drill bit cutter head of this combined cut is for machining and pincers worker maintenance.Description

Background technology:

At present, the fluted drill using in machining is by chisel edge, cutting edge, secondary sword, side edge forms, cutting edge and secondary sword are roughly single structure, adjective-centre structure is poor, these fluted drill utmost points are not durable, especially when cutting the higher workpiece of hardness, (Milling) easily produce a large amount of heat boring, the lower hardness that causes cutter head, cause the wearing and tearing of cutter head, also there is the defect of frangibility in this cutter head simultaneously, and, because the cutting edge on cutter head both sides is symmetrical when the work, and cutting output is only generally that tens of microns are to 1 millimeter, so be difficult to grasp angle and height when artificial reconditioning, in addition, the precision in these fluted drills and the hole that processes is defective, very easily there is waste product, simultaneously, when processing thinner workpiece, also exist workpiece is taken up to the problem that causes industrial accident.

Summary of the invention:

The present invention is exactly in view of the above-mentioned problems and proposes, and take that a kind of drill bit of novel combined cut cutter head is provided is object, and this kind of cutter radiating efficiency is high, and intensity is large, and the life-span is long, and adds and easily locate man-hour in drilling.

For achieving the above object, the present invention adopts following technical proposals:

A kind of drill bit cutter head of combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, it is characterized in that: on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end, or extend to rear portion, or arc extends, to cutting edge or combined cutting edges, or side cutting edge, or on compound side cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade.

A kind of drill bit cutter head of combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, it is characterized in that: on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end, or extend to rear portion, or arc extends, to cutting edge or combined cutting edges, or side cutting edge, or on compound side cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, it is characterized in that: the center chisel edge of the apex point arranging in center, cutterhead top or the two ends of sharp sword, through chamfering, respectively form a centering fillet surface, the crossing angle that is less than or equal to 120 ° that is formed with in rear cutting face of centering chamfer face and apex point, between the centering chamfer face of both sides, form a chisel edge or without the sharp sword of chisel edge, or intersect in the rear cutting face at centering chamfer face and apex point place, and being formed with feels relieved divides a cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is S sword, or from apex point to outermost side edge incline direction on cutting face, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after stairstepping, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, or erect crossing through arc convex or oblique projection, be formed with the angle that is more than or equal to 90 °, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.

A kind of drill bit cutter head of combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end, or extend to rear portion, or arc extends, to cutting edge or combined cutting edges, or side cutting edge, or on compound side cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, it is characterized in that: at 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, 2 or the chamfering blades of both sides intersect at the top sword that summit forms the nonreactive heart, 3 on Huo Hou cutting face, the cutting face of cutterhead arc convex or oblique projection be formed with stage portion, this stage portion is near cutterhead axial centre, or the mode starting to reduce highly gradually laterally from chisel edge or top sword is formed with at least one-level step, the outside of every grade of step is formed with positioning table or compound positioning table with respect to the axial centre of cutterhead, positioning table on cutting face is for strengthening platform, or after inside cutting face arc convex or oblique projection be formed with centering unit or compound centering unit, centering unit or reinforcement platform and positioning table or compound positioning table extend in cutting face backward along cutting edge, or along cutting edge to cutting face, extend to form at least ladder sword of one-level, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.

A kind of drill bit cutter head of combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, in the cutting face in cutting direction or the inner side of arc milling face, at least combined cut face or the compound arcuate cutting face of one-level inner side of being provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with combined cut face or the compound arcuate cutting face of inner side and decompose platform, the cutting face of arranged in step shape or arc milling face are for efficiently cutting platform, the cutting edge of arranged in step shape or arc milling sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection is extended or arc extends to outer end, or extend on cutting edge or front cutting edge to rear portion extension or arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge, or stair-stepping front cutting edge, or the contextual definition that cracking resistance is cut platform or efficiently cut the height of efficiently cutting platform that platform is adjacent with inner side is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inner side is that the depth of cut is multiplied by product number, when work piece hardness or viscosity are larger compared with high and cutter, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or viscosity compared with high and cutter hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or viscosity are larger compared with low and cutter, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or viscosity compared with low and cutter hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the center chisel edge of the apex point arranging in center, cutterhead top or the two ends of sharp sword, through chamfering, respectively form a centering fillet surface, the crossing angle that is less than or equal to 120 ° that is formed with in rear cutting face of centering chamfer face and apex point, between the centering chamfer face of both sides, form a chisel edge or without the sharp sword of chisel edge, or intersect in the rear cutting face at centering chamfer face and apex point place, and being formed with feels relieved divides a cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is S sword, or from apex point to outermost side edge incline direction on cutting face, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after stairstepping, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle that is more than or equal to 90 °, the protrusion of intersection one is provided with arc convex or oblique projection, at 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, 2 or the chamfering blades of both sides intersect at the top sword that summit forms the nonreactive heart, 3 on Huo Hou cutting face, the cutting face of cutterhead arc convex or oblique projection be formed with stage portion, this stage portion is near cutterhead axial centre, or the mode starting to reduce highly gradually laterally from chisel edge or top sword is formed with at least one-level step, the outside of every grade of step is formed with positioning table or compound positioning table with respect to the axial centre of cutterhead, positioning table on cutting face is for strengthening platform, or after inside cutting face arc convex or oblique projection be formed with centering unit or compound centering unit, centering unit or reinforcement platform and positioning table or compound positioning table extend in cutting face backward along cutting edge, or along cutting edge to cutting face, extend to form at least ladder sword of one-level, the any one cutting way of above structure or be combined the drill bit cutter head that formed combination sword arranges formed combined cut on drill bit cutter head, it is characterized in that: 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, or the chamfering blades of both sides intersects at the top sword that summit forms the nonreactive heart, 2 on Huo Hou cutting face, the cutting face of cutterhead arc convex or oblique projection be formed with stage portion, this stage portion is near cutterhead axial centre, or the mode starting to reduce highly gradually laterally from chisel edge or top sword is formed with one or more levels step, the outside of every grade of step is formed with centering unit or compound centering unit with respect to the axial centre of cutterhead, outermost centering unit is for strengthening platform, or after inside cutting face arc convex or oblique projection be formed with positioning table or compound positioning table, centering unit or strengthen platform and positioning table or compound positioning table extend or extend to form at least ladder sword of one-level along cutting edge to cutting face in cutting face backward along cutting edge, 3 arrange at least one recess sword on the cutting edge of cutterhead, recess sword has extended to form at least one groove to Huo Hou cutting face, cutting face, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.

A kind of drill bit cutter head of combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end vertically, or extend to rear portion, to cutting edge or cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, it is characterized in that: at 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, 2 or the chamfering blades of both sides intersect at the top sword that summit forms the nonreactive heart, on the cutting edge of 3 cutterheads, be provided with 4 at least one flat sword, or 5 at least one recess sword, or 6 at least one compound recess sword, or 7 at least one trapezoidal sword, or 8 at least one triangular edge, or 9 at least one arcuate blade, near or the 10 cutting edge chisel edge Huo Dingren center from lateral cutterhead inner side, or rear cutting face, or on cutting face arc convex or oblique projection be formed with ladder sword or stage portion, this stage portion is formed with at least one-level centering unit near the mode starting highly to reduce laterally cutterhead chisel edge Huo Dingren center, the outer peripheral edges of every grade of step are formed with compound positioning table with respect to the axial centre of cutterhead, the compound secondary cutting face of formation that positioning table erects backward along the rear cutting face of front end, extend back and intersect with the rear cutting face in outside, be formed with the ladder sword of one-level at least or be provided with straight sword on positioning table or compound positioning table, or opening sword, or trapezoidal sword, or triangular edge, or arcuate blade, or the recess sword of other shapes, or compound recess sword, and the cutting edge of drill bit cutter head of combined cut or the outer end of combined cutting edges are provided with flat sword or oblique sword, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.Preferably, on the cutting edge of the drill bit cutter head of described combined cut or stair-stepping cutting edge or combined cutting edges, be provided with recess sword to Huo Hou cutting face, cutting face or combined cut face or compound rear cutting face extend to form fluted.

Preferably, on the cutting edge of the described drill bit cutter head in described combined cut or stair-stepping cutting edge or combined cutting edges, be provided with flat sword or the oblique angle sword of outer end, wherein the central axis of drill bit cutter head of flat sword and combined cut or the angle of cylindrical are 180 °, and the angle of oblique angle sword and central axis or cylindrical is 0 to being less than 90 ° or be greater than 90 ° to 180 °.

Preferably, the cutting edge at the drill bit cutter head of described combined cut is formed with ladder sword or is formed with ladder sword simultaneously on Huo Hou cutting face, cutting face on Huo Hou cutting face, cutting face.

Preferably, on the ladder sword forming on Huo Hou cutting face, cutting face at the cutting edge of the drill bit cutter head of described combined cut, be provided with that recess sword is opening to Huo Hou cutting face, cutting face or combined cut face or compound rear cutting face extend to form fluted.

Preferably, on the cutting edge of the drill bit cutter head of described combined cut or combined cutting edges, be at least provided with straight sword, square opening sword, trapezoidal sword, triangular edge, the recess sword of arcuate blade or other shapes or compound recess sword.

Preferably, on the cutting edge of the drill bit cutter head of described combined cut or combined cutting edges, be arranged to polygon cutting edge.

Preferably, the Huo Hou cutting face, cutting face of the drill bit cutter head of described combined cut and cutting edge, chamfering blades and chisel edge on fillet surface form the cutting edge of S shape or anti-S shape, i.e. S sword or at least crossing top sword that forms the nonreactive heart of chamfering blades of both sides.

Preferably, described cutter tip, it is characterized in that, in the stair-stepping rear cutting face of at least two-stage of described cutter tip and cutting edge or the chamfering blades on fillet surface, at least one recess sword is set, recess sword is opening, and the groove distributing is extended in cutting face or cutting face backward.

Preferably, the drill bit cutter head of described combined cut, it is characterized in that, on the rear cutting face of described cutter, be formed with at least one groove and front cutting face or heat radiation platform or positioning table and intersect and be formed with at least one recess sword, the bottom shape of the bottom shape of groove and recess sword is trapezoidal, triangle or arc or other polyhedron shapes.

Preferably, the drill bit cutter head of described combined cut, is characterized in that, at cutting face or the crossing at least one-level combined cutting edges that forms of combined cut face and rear cutting face of described cutter.

Preferably, the drill bit cutter head of described combined cut, is characterized in that, on the arc convex of described cutter or the cutting edge of oblique projection or apex point, has chamfering blades.

Preferably, the drill bit cutter head of described combined cut, is characterized in that, is formed with at least one-level combined cutting edges on the apex point of described cutter.

Preferably, the drill bit cutter head of described combined cut, is characterized in that, at the cutting edge of described cutter, is to be formed with minute cutting blade and little side edge on straight sword or recess sword or inverted trapezoidal sword or triangular edge or square opening sword.

Preferably, the drill bit cutter head of described combined cut, is characterized in that, at the angle of described cutter outermost and the crossing cutting edge of cutting edge or minute cutting blade and cutting edge, is acute angle or right angle or obtuse angle.

Preferably, the drill bit cutter head of described combined cut, is characterized in that, in the front portion of the cutter tip of described cutter, connects cutter tip.

Beneficial effect:

By triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face have be greater than 90 ° be less than 180 ° of angle β in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, stressed inclination to the inside while making to cut, reduce and decomposed the cutting resistance in outside, by the detailed restriction of angle and data, further successfully realized determining of more high-precision numerical value, make the stock-removing efficiency of cutter and reach maximum service life, arc convex or oblique projection have effectively been strengthened again the breaking resistance of cutter, improved efficiency, reduced cost, saved resource.

Accompanying drawing explanation:

Technical scheme of the present invention and advantage will be described in detail in conjunction with the drawings, in this accompanying drawing:

Fig. 1, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the first embodiment of the present invention.

Fig. 2, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the second embodiment of the present invention.

Fig. 3, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the 3rd embodiment of the present invention.

Fig. 4, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the 4th embodiment of the present invention.

Fig. 5, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the 5th embodiment of the present invention.

Fig. 6, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the 6th embodiment of the present invention.

Fig. 7, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the 7th embodiment of the present invention.

Fig. 8, Fig. 9-Figure 16 are the schematic diagrames of drill bit cutter head of the combined cut of the 8th embodiment of the present invention.

The specific embodiment:

Below in conjunction with accompanying drawing, explain the preferred embodiment of the drill bit cutter head of combined cut of the present invention, the cutter with two cutter tips of mainly take in embodiment 1-8 describes as example.

Embodiment 1:

As Fig. 1, shown in Fig. 9-Figure 16, the drill bit cutter head of the combined cut of the first embodiment of the present invention, a kind of drill bit cutter head of combined cut, this drill bit cutter head 2 is connected with outside rig by locating hole 17 or locating slot 18, comprise cutterhead 1, cutterhead 1 is cutting face 3 towards the face of cutting direction, the face of the top rear side in each cutting face 3 is rear cutting face 4, the face of cutting face 3 exterior sides is side cutting face 5, cutting face 3 is intersected and is formed cutting edge 15 with rear cutting face 4, on the drill bit cutter head 2 of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape 50 or dovetail groove shape 50, or deep-slotted chip breaker fills 50, or arc dovetail groove shape 50 depression be provided with one-level bottom at least or sidepiece, with cutting face or combined cut face be formed be greater than 90 ° be less than 180 ° of angle β in the bevel 52 of cutting sth. askew, or the bevel 52 of cutting sth. askew in arc, or the bevel 52 of cutting sth. askew in compound, or the bevel 52 of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel 52 of cutting sth. askew, or the bevel 52 of cutting sth. askew in arc, or the bevel 52 of cutting sth. askew in compound, or the bevel 52 of cutting sth. askew in compound arcuate, or combined cut face, or the compound location decomposition platform 10 of arc combined cut face and inner side intersects, be formed with the compound location decomposition platform 10 that is greater than 30 ° or is less than 120 ° of angle r, or intersect with cutting face 4 or the combined cut face 11 of inner side through arc convex or oblique protruding 20, or arc convex or oblique protruding 20 extensions that erect, be formed with the compound location decomposition platform 10 that is greater than 30 ° or is less than 120 ° of angle r, or cutting face 4 or the crossing angle ω that is more than or equal to 90 ° that is formed with of combined cut face 11 of platform 10 and inner side are decomposed in compound location, or triangular groove shape 50 or dovetail groove shape 50, or the bottom of arc triangle groove shape 50 or arc dovetail groove shape 50 or sidepiece setting in the bevel 52 of cutting sth. askew, or the bevel 52 of cutting sth. askew in arc, or the bevel 52 of cutting sth. askew in compound, or the bevel 52 of cutting sth. askew in compound arcuate, or combined cut face 54, or arc combined cut face 54, or arc convex or oblique protruding 20 extends to front end, or extend to rear portion, or arc extends, to cutting edge 15 or combined cutting edges 8, or side cutting edge 24, or on compound side cutting edge 26, be formed with oblique sword 53 in interior oblique sword 53 or arc, or compound interior oblique sword 53, or oblique sword 53 in compound arcuate, or combined cutting edges 55, the recessed sword of side or skew back sword 22, triangular groove shape 50 or dovetail groove shape 50, or arc triangle groove shape 50, or 50 settings of arc dovetail groove shape are Fig. 9-Figure 16, or spread configuration in the bevel 52 of cutting sth. askew, or the bevel 52 of cutting sth. askew in arc, or the bevel 52 of cutting sth. askew in compound, or the bevel 52 of cutting sth. askew in compound arcuate, cutting face 54, 11, 4 or combined cut face 54, 11, 4, arc milling face 54, 11, 4 or arc combined cut face 54, 11, 4 for efficiently cutting platform, triangular groove shape 50, or dovetail groove shape 50, or arc triangle groove shape 50, or arc dovetail groove shape 50 arranges or compound spread configuration along cutting edge or side cutting edge, formed combined cutting edges 8, or the cutting edge 9 of compound side cutting edge 55, 55, or cutting edge 8, 13, or interior oblique sword 53, or oblique sword 53 in arc, or compound interior oblique sword 53, or oblique sword 53 in compound arcuate, for efficient minute cutting blade, the outermost platform 4 of efficiently cutting is cut platform for cracking resistance, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, triangular groove shape 50 or dovetail groove shape 50, or arc triangle groove shape 50 or arc dovetail groove shape 50 relate to the design of Fig. 7-Figure 14.

Inner side in the cutting face 3 in cutting direction, the at least combined cut face 7 of one-level inner side that is provided with through arc convex or oblique protruding 20 stepped projections, or arc convex or oblique protruding 20 extensions that erect, be formed with the compound location crossing with the combined cut face 7 of inner side and decompose platform 6, the cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge 15 of arranged in step shape, 8 is efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform 3, outermost efficient minute cutting blade 15 divides cutting blade 15 for cracking resistance, or arc convex or oblique protruding 20 extends or arc extends to outer end, or extend on cutting edge or front cutting edge to rear portion extension or arc, be formed with the recessed sword of side or skew back sword 19, with stair-stepping cutting edge 15, 8, 23, or stair-stepping front cutting edge 21, 24, or the center chisel edge of apex point or the two ends of sharp sword 12 that in center, cutterhead top, arrange, through chamfering, respectively form a centering fillet surface 11, the crossing angle that is less than or equal to 120 ° that is formed with in rear cutting face 10 of centering chamfer face and apex point 12, 11, the centering chamfer face of both sides forms chisel edges or without the sharp sword 12 of chisel edge, or centering chamfer face 11 intersects and is formed with centering minute cutting blade 9 with the rear cutting face 10 at apex point place, the outside of centering minute cutting blade 9 is location minute cutting blade 23, point sword or chisel edge 12, at least the compound location of both sides divides the sharp sword 12 of cutting blade 23 and centering minute cutting blade 9 and chisel edge or the nonreactive heart to form the cutting edge of S shape or anti-S shape, it is S sword, or from apex point 12 to compound side edge 26, or the rear cutting face 4 of outermost side edge 24 incline directions, 22, on 10, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face 4 after stairstepping, 22, 10, or the contextual definition that cracking resistance is cut platform or efficiently cut the height h that efficiently cuts platform that platform is adjacent with inner side is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inner side is that the depth of cut is multiplied by product number, when work piece hardness or viscosity are larger compared with high and cutter, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or viscosity compared with high and cutter hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or viscosity are larger compared with low and cutter, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or viscosity compared with low and cutter hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, cracking resistance is cut platform 3, or efficiently cut platform 7 and intersect with compound decomposition platform 6, be formed with the angle r that is more than or equal to 90 °, the protrusion of intersection one is provided with arc convex or oblique protruding 20, or the height h of combined cut face that cracking resistance is cut platform and adjacent inner side is for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width α that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, at 1 cutting edge 15, the top sword 12 of chamfering blades 9 and chisel edge or the nonreactive heart forms the S sword of S shape or anti-S shape, 2 or the chamfering blades 9 of both sides intersect at the top sword 12 that summit forms the nonreactive heart, 3 on Huo Hou cutting face, the cutting face of cutterhead arc convex or oblique protruding 20 be formed with stage portion, this stage portion is near cutterhead axial centre, or in the mode reducing highly gradually laterally, be formed with at least one-level step from chisel edge or 9 beginnings of top sword, the outside of every grade of step is formed with positioning table or compound positioning table 6 with respect to the axial centre of cutterhead, positioning table on cutting face 3 is for strengthening platform 3, or after inside cutting face arc convex or oblique projection be formed with centering unit or compound centering unit 25, cracking resistance is cut platform 3 and positioning table or compound positioning table 6 and is extended in cutting face backward along cutting edge, or centering unit or compound centering unit 25 along compound side edge 26 to cutting face 3, 7 extend to form at least ladder sword 15 of one-level, 8, 23, cutting edge 23, the top sword 12 of chamfering blades 9 and chisel edge or the nonreactive heart forms the S sword of S shape or anti-S shape, or the chamfering blades 9 of both sides intersects at the top sword 12 that summit forms the nonreactive heart, cutting face 3 at cutterhead 2, 7 or rear cutting face 4, 10, on 22, be formed with stage portion, this stage portion is near cutterhead axial centre, or in the mode reducing highly gradually laterally, be formed with one or more levels step from chisel edge or 12 beginnings of top sword, the outside of every grade of step is formed with compound centering unit 25 with respect to the axial centre of cutterhead, outermost centering unit 4 is for strengthening platform 4, or 4 inner sides, rear cutting face are formed with rear cutting face 4 or compound rear cutting face 22, 10, positioning table 4 or compound positioning table 22, 10 extend along cutting edge to cutting face or along compound side edge to cutting face, extend to form at least ladder sword of one-level, oblique sword 53 at least one is set on the cutting edge 8 of cutterhead 2, in tiltedly sword 53 to cutting face 7 or rear cutting face 22 extended to form the bevel 52 of cutting sth. askew at least one, at cutting edge 23, the top sword 12 of chamfering blades 9 and chisel edge or the nonreactive heart forms the S sword of S shape or anti-S shape, or the chamfering blades 9 of both sides intersects at the top sword 12 that summit forms the nonreactive heart, on the cutting edge of cutterhead 2, be provided with at least one flat sword, or at least one recess sword 14, or at least one compound recess sword 14, or at least one trapezoidal sword, or at least one triangular edge, or at least one arcuate blade 14, or at the chisel edge from lateral cutterhead inner side or near cutting edge Ding Ren 12 centers, or rear cutting face, or on cutting face arc convex or oblique projection be formed with ladder sword or stage portion, this stage portion is formed with at least one-level centering unit near the mode starting highly to reduce laterally cutterhead chisel edge Huo Dingren center, the outer peripheral edges of every grade of step are formed with compound positioning table with respect to the axial centre of cutterhead, the compound secondary cutting face of formation that positioning table erects backward along the rear cutting face of front end, extend back and intersect with the rear cutting face in outside, be formed with the ladder sword of one-level at least or be provided with straight sword on positioning table or compound positioning table, or opening sword, or trapezoidal sword, or triangular edge, or arcuate blade, or the recess sword 14 of other shapes, or compound recess sword 14, and the cutting edge of drill bit cutter head of combined cut or the outer end of combined cutting edges are provided with flat sword or oblique sword.

According to said structure, provide the cracking resistance arranging on cutterhead 1 and cut width or the height of platform, and the above data of angle are going out through practice, as surpassed this scope, will have a greatly reduced quality in efficiency or service life, this kind of cutter can decompose the cutting force of cutting edge, reduce the frictional strength of cutting edge, especially the frictional force frictional heat generation that has reduced secondary cutting face 5 reduces, can also increase the area of dissipation of cutterhead simultaneously, reduce cutterhead temperature, decompose cutting edge stressed of flimsy outer end of cutter, extended cutter life, and in process, keep high strength always.

Embodiment 2:

As figure, shown in Fig. 9-Figure 16, of the present invention second executes the drill bit cutter head of the combined cut of mode, on the basis of the first embodiment, cutterhead 1 of the present invention is provided with the cutter tip 2 of both sides integratedly, the face towards cutting direction of cutter tip 2 is cutting face 3, the top rear side in cutting face 3 is rear cutting face 4, outermost of cutter tip 2 is secondary cutting face 5, cutting face 3 is intersected and is formed with cutting edge with rear cutting face 4, interior oblique sword 53 is set on the sword of cutting face, cutting face 4 bevel 52 of cutting sth. askew in having extended to form backward, the outermost cutting face of the combined cut face that is formed with of the inner bulge in cutting face 3 is that cracking resistance is cut platform 15, the cutting face of projection is for efficiently cutting platform, cracking resistance is cut platform and is efficiently cut and between platform, is provided with arc convex or oblique protruding 20, intersect and be formed with the recessed sword of side or skew back sword 19 with rear cutting face, cracking resistance is cut platform and the angle of efficiently cutting between platform is more than or equal to the angle α of 90 °, through the efficient platform 6 that decomposes, connect, the cutting face of inner bulge is that cracking resistance is cut platform 7 and the crossing efficiently minute cutting blade 8 that is formed with in compound rear cutting face 10, by on paracentral cutting edge, fillet surface 11 and chamfering blades 9 are being set, the chamfering blades 9 of both sides intersects the top sword 12 that forms the nonreactive heart, in cracking resistance, cutting platform 7 bevel 52 of cutting sth. askew in arranging intersects and is formed with interior oblique sword 53 with compound rear cutting face 10, locating hole 17 and the compound location of locating slot 18 are set on the drill bit cutter head of combined cut cuts platform 3 and feels relieved and divide cutting blade 12 and chisel edge or sharp sword 9 to form S sword or anti-S sword, the sharp sword 9 of the chisel edge of every side or the nonreactive heart, and the compound location of this side divides 10 of cutting blades that a chamfering, cutting bevel 13 is set, chamfering, cutting bevel 13 intersects with rear cutting face 10, be formed with the angle that is less than 90 °, what cracking resistance was cut platform platform 7 and adjacent inner side efficiently cuts height h between platform 3 for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, on efficient minute cutting blade 8, be formed with recess sword 144, or cracking resistance cut platform 7 with the height h that efficiently cuts platform 3 of adjacent inner side for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width h ' that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter.

Embodiment 3:

As Fig. 3, Fig. 9-Figure 16 shows, the of the present invention the 3rd executes the drill bit cutter head of the combined cut of mode, on the basis of the first-bis-embodiment, cutterhead 1 of the present invention is provided with the cutter tip 2 of at least opposing both sides integratedly, the face towards cutting direction of cutter tip 2 is cutting face 3, the top rear side in cutting face 3 is rear cutting face 4, outermost of cutter tip 2 is secondary cutting face 5, cutting face 3 is intersected and is formed with cutting edge 15 with rear cutting face 4, the mode that the inner side axial centre in cutting face 3 starts to reduce highly gradually is laterally formed with one or more levels positioning table 6, the one-level positioning table of outermost arc convex or oblique projection is for strengthening platform, the combined cut face 7 of arc convex or oblique projection intersects and is formed with combined cutting edges 8 with compound rear cutting face 10, near on the cutting edge of central axis, fillet surface 11 and chamfering blades 9 are being set, chamfering, cutting bevel 13 intersects with rear cutting face 10, be formed with the angle that is less than 90 °, what cracking resistance was cut platform 7 and adjacent inner side efficiently cuts height h between platform 3 for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, on efficient minute cutting blade 8, be formed with recess sword 144, or cracking resistance cut platform 7 with the height h that efficiently cuts platform 3 of adjacent inner side for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width h ' that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter.

Embodiment 4:

As Fig. 4, shown in Fig. 9-Figure 16, the of the present invention the 4th executes the drill bit cutter head of the combined cut of mode, on the basis of the first-tri-embodiment, cutterhead 1 of the present invention is provided with the cutter tip 2 of both sides integratedly, the face towards cutting direction of cutter tip 2 is cutting face 3, the top rear side in cutting face 3 is rear cutting face 4, outermost of cutter tip 2 is secondary cutting face 5, cutting face 3 is intersected and is formed with cutting edge 15 with rear cutting face 4, the mode that the inner side axial centre in cutting face 3 starts to reduce highly gradually is laterally formed with one or more levels positioning table 6, the one-level positioning table of outermost arc convex or oblique projection is for strengthening platform, the combined cut face 7 of arc convex or oblique projection intersects and is formed with combined cutting edges 8 with compound rear cutting face 10, near on the cutting edge of central axis, fillet surface 11 and chamfering blades 9 are being set, chamfering, cutting bevel 13 intersects with rear cutting face 10, be formed with the angle that is less than 90 °, what cracking resistance was cut platform platform 7 and adjacent inner side efficiently cuts height h between platform 3 for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, on efficient minute cutting blade 8, be formed with recess sword 144, or cracking resistance cut platform 7 with the height h that efficiently cuts platform 3 of adjacent inner side for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width h ' that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter.

Embodiment 5:

As Fig. 5, Fig. 9-Figure 16 shows, the drill bit cutter head of the combined cut of the 5th embodiment of the present invention, on the basis of the first-tetra-embodiment, cutterhead 1 of the present invention is provided with the cutter tip 2 of both sides integratedly, the face towards cutting direction of cutter tip 2 is cutting face 3, the top rear side in cutting face 3 is rear cutting face 4, outermost of cutter tip 2 is secondary cutting face 5, cutting face 3 is intersected and is formed with cutting edge 15 with rear cutting face 4, the mode that the inner side axial centre in cutting face 3 starts to reduce highly gradually is laterally formed with one or more levels positioning table 6, the one-level positioning table of outermost arc convex or oblique projection is for strengthening platform, the combined cut face 7 of arc convex or oblique projection intersects and is formed with combined cutting edges 8 with compound rear cutting face 10, near on the cutting edge of central axis, fillet surface 11 and chamfering blades 9 are being set, chamfering, cutting bevel 13 intersects with rear cutting face 10, be formed with the angle that is less than 90 °, what cracking resistance was cut platform platform 7 and adjacent inner side efficiently cuts height h between platform 3 for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, on efficient minute cutting blade 8, be formed with recess sword 144, or cracking resistance cut platform 7 with the height h that efficiently cuts platform 3 of adjacent inner side for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width h ' that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter.

Embodiment 6:

As Fig. 6, shown in Fig. 9-Figure 16, the drill bit cutter head of the combined cut of the 6th embodiment of the present invention, on the basis of the first-five embodiment, cutterhead 1 of the present invention is provided with the cutter tip 2 of both sides integratedly, the face towards cutting direction of cutter tip 2 is cutting face 3, the top rear side in cutting face 3 is rear cutting face 4, outermost of cutter tip 2 is secondary cutting face 5, cutting face 3 is intersected and is formed with cutting edge 15 with rear cutting face 4, the mode that the inner side axial centre in cutting face 3 starts to reduce highly gradually is laterally formed with one or more levels positioning table 6, the one-level positioning table of outermost arc convex or oblique projection is for strengthening platform, the combined cut face 7 of arc convex or oblique projection intersects and is formed with combined cutting edges 8 with compound rear cutting face 10, near on the cutting edge of central axis, fillet surface 11 and chamfering blades 9 are being set, chamfering, cutting bevel 13 intersects with rear cutting face 10, be formed with the angle that is less than 90 °, what cracking resistance was cut platform platform 7 and adjacent inner side efficiently cuts height h between platform 3 for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, on efficient minute cutting blade 8, be formed with recess sword 144, or cracking resistance cut platform 7 with the height h that efficiently cuts platform 3 of adjacent inner side for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width h ' that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter.

Embodiment 7:

As Fig. 7, shown in Fig. 9-Figure 16, the drill bit cutter head of the combined cut of the 7th embodiment of the present invention, on the basis of the first-six embodiment, cutterhead 1 of the present invention is provided with the cutter tip 2 of both sides integratedly, the face towards cutting direction of cutter tip 2 is cutting face 3, the top rear side in cutting face 3 is rear cutting face 4, outermost of cutter tip 2 is secondary cutting face 5, cutting face 3 is intersected and is formed with cutting edge 15 with rear cutting face 4, the mode that the inner side axial centre in cutting face 3 starts to reduce highly gradually is laterally formed with one or more levels positioning table 6, the one-level positioning table of outermost arc convex or oblique projection is for strengthening platform, the combined cut face 7 of arc convex or oblique projection intersects and is formed with combined cutting edges 8 with compound rear cutting face 10, near on the cutting edge of central axis, fillet surface 11 and chamfering blades 9 are being set, chamfering, cutting bevel 13 intersects with rear cutting face 10, be formed with the angle that is less than 90 °, what cracking resistance was cut platform platform 7 and adjacent inner side efficiently cuts height h between platform 3 for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, on efficient minute cutting blade 8, be formed with recess sword 144, or cracking resistance cut platform 7 with the height h that efficiently cuts platform 3 of adjacent inner side for being more than or equal to 0.01 millimeter, or be less than the bits of discharging after this kind of Tool in Cutting thickness 4/5ths, or be less than the height of the product number of 9 times of the cutting amount of feeding, or the width h ' that cracking resistance is cut platform is for being greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, or inner side or the arranging of rear portion projection in the cutting face outside the front end of cutter are efficiently cut platform 3, the cutting face of outermost front end part is that cracking resistance is cut platform, intersect with Huo Fu cutting face, rear cutting face, the cutting edge and the front cutting edge that form are that cracking resistance is divided cutting blade.

Embodiment 8:

As Fig. 8, shown in Fig. 9-Figure 16, the drill bit cutter head of the stair-stepping combined cut of the 8th embodiment of the present invention, on the basis of the first-seven embodiment, cutterhead 1 of the present invention is provided with the cutter tip 2 of both sides integratedly, the face towards cutting direction of cutter tip 2 is cutting face 3, the top rear side in cutting face 3 is rear cutting face 4, on the inner side axial direction of cutter tip 2, arc convex or oblique projection arranges stair-stepping positioning table 22, outermost of cutter tip 2 is secondary cutting face 5, cutting face 3 is intersected and is formed with cutting edge 15 with rear cutting face 4, the mode that the inner side axial centre in cutting face 3 starts to reduce highly gradually is laterally formed with one or more levels positioning table 6, the one-level positioning table of outermost arc convex or oblique projection is for strengthening platform, the combined cut face 7 of arc convex or oblique projection intersects and is formed with combined cutting edges 8 with compound rear cutting face 10, near on the cutting edge of central axis, fillet surface 11 and chamfering blades 9 are being set, the chamfering blades 9 of both sides intersects the top sword 12 that forms the nonreactive heart, chamfering, cutting bevel 13 intersects with rear cutting face 10, be formed with the angle that is less than or equal to 120 °.

Although the cutter with the cutter tip in former and later two directions of take is above illustrated as example, but cutter of the present invention also can have a plurality of cutter tips, on each cutter tip, can adopt as described in the structure of embodiment and the combination of other various ways thereof.

Above-described preferred embodiment is illustrative and not restrictive, and in the situation that not departing from purport of the present invention and essential characteristic, the present invention can also otherwise implement and specialize.Scope of the present invention is limited by claim, and all distortion in claim limited range all fall within the scope of the present invention.

Claims

1. the drill bit cutter head of a combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, it is characterized in that: on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end, or extend to rear portion, or arc extends, to cutting edge or combined cutting edges, or side cutting edge, or on compound side cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade.

2. the drill bit cutter head of a combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, it is characterized in that: on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end, or extend to rear portion, or arc extends, to cutting edge or combined cutting edges, or side cutting edge, or on compound side cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, it is characterized in that: the center chisel edge of the apex point arranging in center, cutterhead top or the two ends of sharp sword, through chamfering, respectively form a centering fillet surface, the crossing angle that is less than or equal to 120 ° that is formed with in rear cutting face of centering chamfer face and apex point, between the centering chamfer face of both sides, form a chisel edge or without the sharp sword of chisel edge, or intersect in the rear cutting face at centering chamfer face and apex point place, and being formed with feels relieved divides a cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is S sword, or from apex point to outermost side edge incline direction on cutting face, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after stairstepping, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, or erect crossing through arc convex or oblique projection, be formed with the angle that is more than or equal to 90 °, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.

3. the drill bit cutter head of a combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end, or extend to rear portion, or arc extends, to cutting edge or combined cutting edges, or side cutting edge, or on compound side cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, it is characterized in that: at 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, 2 or the chamfering blades of both sides intersect at the top sword that summit forms the nonreactive heart, 3 on Huo Hou cutting face, the cutting face of cutterhead arc convex or oblique projection be formed with stage portion, this stage portion is near cutterhead axial centre, or the mode starting to reduce highly gradually laterally from chisel edge or top sword is formed with at least one-level step, the outside of every grade of step is formed with positioning table or compound positioning table with respect to the axial centre of cutterhead, positioning table on cutting face is for strengthening platform, or after inside cutting face arc convex or oblique projection be formed with centering unit or compound centering unit, centering unit or reinforcement platform and positioning table or compound positioning table extend in cutting face backward along cutting edge, or along cutting edge to cutting face, extend to form at least ladder sword of one-level, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.

4. the drill bit cutter head of a combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, in the cutting face in cutting direction or the inner side of arc milling face, at least combined cut face or the compound arcuate cutting face of one-level inner side of being provided with through arc convex or oblique raised step shape projection, or the extension that erects of arc convex or oblique projection, be formed with the compound location of intersecting with combined cut face or the compound arcuate cutting face of inner side and decompose platform, the cutting face of arranged in step shape or arc milling face are for efficiently cutting platform, the cutting edge of arranged in step shape or arc milling sword are efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, or arc convex or oblique projection is extended or arc extends to outer end, or extend on cutting edge or front cutting edge to rear portion extension or arc, be formed with the recessed sword of side or skew back sword, with stair-stepping cutting edge, or stair-stepping front cutting edge, or the contextual definition that cracking resistance is cut platform or efficiently cut the height of efficiently cutting platform that platform is adjacent with inner side is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inner side is that the depth of cut is multiplied by product number, when work piece hardness or viscosity are larger compared with high and cutter, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or viscosity compared with high and cutter hour, the cutting depth of cut is less, the product number that the depth of cut is taken advantage of is larger, when work piece hardness or viscosity are larger compared with low and cutter, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, when work piece hardness or viscosity compared with low and cutter hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the center chisel edge of the apex point arranging in center, cutterhead top or the two ends of sharp sword, through chamfering, respectively form a centering fillet surface, the crossing angle that is less than or equal to 120 ° that is formed with in rear cutting face of centering chamfer face and apex point, between the centering chamfer face of both sides, form a chisel edge or without the sharp sword of chisel edge, or intersect in the rear cutting face at centering chamfer face and apex point place, and being formed with feels relieved divides a cutting blade, the outside of centering minute cutting blade is location minute cutting blade, point sword or chisel edge, at least the compound location of both sides divides the sharp edge type of cutting blade and centering minute cutting blade and chisel edge or the nonreactive heart to become the cutting edge of S shape or anti-S shape, it is S sword, or from apex point to outermost side edge incline direction on cutting face, relatively depression is provided with Baltimore groove, or dovetail groove, or square groove, or del groove, or deep-slotted chip breaker, or shaped groove, or cutting face after planar shaped, or cutting face after stairstepping, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle that is more than or equal to 90 °, the protrusion of intersection one is provided with arc convex or oblique projection, at 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, 2 or the chamfering blades of both sides intersect at the top sword that summit forms the nonreactive heart, 3 on Huo Hou cutting face, the cutting face of cutterhead arc convex or oblique projection be formed with stage portion, this stage portion is near cutterhead axial centre, or the mode starting to reduce highly gradually laterally from chisel edge or top sword is formed with at least one-level step, the outside of every grade of step is formed with positioning table or compound positioning table with respect to the axial centre of cutterhead, positioning table on cutting face is for strengthening platform, or after inside cutting face arc convex or oblique projection be formed with centering unit or compound centering unit, centering unit or reinforcement platform and positioning table or compound positioning table extend in cutting face backward along cutting edge, or along cutting edge to cutting face, extend to form at least ladder sword of one-level, the any one cutting way of above structure or be combined the drill bit cutter head that formed combination sword arranges formed combined cut on drill bit cutter head, it is characterized in that: 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, or the chamfering blades of both sides intersects at the top sword that summit forms the nonreactive heart, 2 on Huo Hou cutting face, the cutting face of cutterhead arc convex or oblique projection be formed with stage portion, this stage portion is near cutterhead axial centre, or the mode starting to reduce highly gradually laterally from chisel edge or top sword is formed with one or more levels step, the outside of every grade of step is formed with centering unit or compound centering unit with respect to the axial centre of cutterhead, outermost centering unit is for strengthening platform, or after inside cutting face arc convex or oblique projection be formed with positioning table or compound positioning table, centering unit or strengthen platform and positioning table or compound positioning table extend or extend to form at least ladder sword of one-level along cutting edge to cutting face in cutting face backward along cutting edge, 3 arrange at least one recess sword on the cutting edge of cutterhead, recess sword has extended to form at least one groove to Huo Hou cutting face, cutting face, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.

5. the drill bit cutter head of a combined cut, this drill bit cutter head is connected with outside rig by locating hole or locating slot, comprise cutterhead, cutterhead is cutting face towards the face of cutting direction, the face of the top rear side in each cutting face is rear cutting face, the crossing cutting edge that forms in Yu Hou cutting face, cutting face, on the drill bit cutter head of combined cut, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face towards direction of rotation, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the trapezoidal groove depression of arc be provided with the bottom of one-level at least or sidepiece, with cutting face or combined cut face be formed with have be greater than 90 ° be less than 180 ° of angles in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, decomposing platform with compound location intersects, be formed with the angle that is greater than 30 ° or is less than 120 °, or intersect through cutting face or the combined cut face of arc convex or oblique projection and inner side, or the extension that erects of arc convex or oblique projection, be formed with the compound location decomposition platform that is greater than 30 ° or is less than 120 ° of angles, or compound location is decomposed platform and is more than or equal to 90 ° of angles with cutting face or crossing being formed with of combined cut face of inner side, or triangular groove shape or dovetail groove shape, or the bottom of arc triangle groove shape or arc dovetail groove shape or sidepiece setting in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, or combined cut face, or arc combined cut face, or arc convex or oblique projection extend to front end vertically, or extend to rear portion, to cutting edge or cutting edge, be formed with oblique sword in interior oblique sword or arc, or oblique sword in compound interior oblique sword or compound arcuate, the recessed sword of side or skew back sword, triangular groove shape or dovetail groove shape, or arc triangle groove shape or the setting of arc dovetail groove shape, or spread configuration in the bevel of cutting sth. askew, or the bevel of cutting sth. askew in arc, or the bevel of cutting sth. askew in compound, or the bevel of cutting sth. askew in compound arcuate, combined cut face, or arc combined cut face is for efficiently cutting platform, triangular groove shape, or dovetail groove shape, or arc triangle groove shape, or arc dovetail groove shape, along cutting edge or side cutting edge, arrange, or compound spread configuration, formed combined cutting edges, or compound side cutting edge, or the cutting edge of spread configuration, or compound arcuate cutting edge, or interior oblique sword, or oblique sword in arc, or compound interior oblique sword, or oblique sword in compound arcuate, for efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform, outermost efficient minute cutting blade is that cracking resistance is divided cutting blade, it is characterized in that: at 1 cutting edge, chamfering blades and chisel edge form the S sword of S shape or anti-S shape, 2 or the chamfering blades of both sides intersect at the top sword that summit forms the nonreactive heart, on the cutting edge of 3 cutterheads, be provided with 4 at least one flat sword, or 5 at least one recess sword, or 6 at least one compound recess sword, or 7 at least one trapezoidal sword, or 8 at least one triangular edge, or 9 at least one arcuate blade, near or the 10 cutting edge chisel edge Huo Dingren center from lateral cutterhead inner side, or rear cutting face, or on cutting face arc convex or oblique projection be formed with ladder sword or stage portion, this stage portion is formed with at least one-level centering unit near the mode starting highly to reduce laterally cutterhead chisel edge Huo Dingren center, the outer peripheral edges of every grade of step are formed with compound positioning table with respect to the axial centre of cutterhead, the compound secondary cutting face of formation that positioning table erects backward along the rear cutting face of front end, extend back and intersect with the rear cutting face in outside, be formed with the ladder sword of one-level at least or be provided with straight sword on positioning table or compound positioning table, or opening sword, or trapezoidal sword, or triangular edge, or arcuate blade, or the recess sword of other shapes, or compound recess sword, and the cutting edge of drill bit cutter head of combined cut or the outer end of combined cutting edges are provided with flat sword or oblique sword, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges the drill bit cutter head of formed combined cut on drill bit cutter head.

6. the drill bit cutter head of the combined cut as described in as arbitrary in claim 1-5, it is characterized in that, on the cutting edge of described drill bit cutter head or stair-stepping cutting edge or combined cutting edges, be provided with recess sword to Huo Hou cutting face, cutting face or combined cut face or compound rear cutting face extend to form fluted.

7. the drill bit cutter head of the combined cut as described in as arbitrary in claim 1-5, it is characterized in that, on the cutting edge of described drill bit cutter head or stair-stepping cutting edge or combined cutting edges, be provided with the vertical sword of outer end or oblique sword, the central axis of drill bit cutter head of its neutral sword and combined cut or the angle of cylindrical are 180 °, and the angle of oblique angle sword and central axis or cylindrical is 0 to being less than 90 ° or be greater than 90 ° to 180 °.

8. the drill bit cutter head of the combined cut as described in as arbitrary in claim 1-5, is characterized in that, at the cutting edge of described drill bit cutter head, is formed with ladder sword or is formed with ladder sword simultaneously on Huo Hou cutting face, cutting face on Huo Hou cutting face, cutting face.

9. the drill bit cutter head of the combined cut as described in as arbitrary in claim 1-5, it is characterized in that, on the ladder sword forming at the cutting edge of described drill bit cutter head, be provided with that recess sword is opening to Huo Hou cutting face, cutting face or combined cut face or compound rear cutting face extend to form fluted on Huo Hou cutting face, cutting face.

10. the drill bit cutter head of the combined cut as described in as arbitrary in claim 1-5, is characterized in that, on the cutting edge of the drill bit cutter head of described combined cut or combined cutting edges, is at least provided with straight sword, square opening sword, trapezoidal sword, triangular edge, the recess sword of arcuate blade or other shapes or compound recess sword.