CN103381508A

CN103381508A - Combination rymer

Info

Publication number: CN103381508A
Application number: CN2012101460342A
Authority: CN
Inventors: 李仕清
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2013-11-06

Abstract

The invention provides a combination rymer with high heat radiating efficiency, low resistance force, long service life, and easiness in positioning during reaming. The combination rymer comprises a tool bit, and is characterized in that the relation between the height of an anti-crack slitting table or an efficient slitting table and that of an adjacent efficient slitting table on an inner side is defined; the included angle between a combination spiral cutting surface and an adjacent combination positioning decomposing table is larger than or equal to 90 degrees, the heights of adjacent combination spiral cutting surfaces are larger than or equal to 0.01mm, smaller than four fifths of the thickness of discharged chips, or smaller than or equal to nine times of the height of the cutting feed amount, the width of the anti-crack slitting table is larger than 0.6 mm, or smaller than or equal to one third of the diameter of the tool bit, or a spiral groove is formed in the combination spiral cutting surface.

Description

A kind of combination cutter

Technical field:

The present invention relates to a kind of reamer, this reamer is used for the fraising of the operations such as drilling and reaming of machining.

Background technology:

The reamer that uses in machining at present is made of chamfering blades, front cutting edge, cutting face, secondary cutting face, cutting edge, cutting edge roughly is single cutting force way, though be that every reamer has a plurality of cutting bars, on each cutting bar, a complete cutting edge is arranged, the cutting edge of this kind structure is taper reamer especially, integral body is stressed, resistance is very large, often cause the reamer fracture, products waste, even cause industrial accident, and hand reamer is required great effort more when reaming because resistance is very large, workman's workload is very large, and efficient is very low.

Summary of the invention:

The present invention is exactly in view of the above-mentioned problems and proposes, and one a kind of novel combination cutter is provided is purpose, and this kind cutter radiating efficiency is high, and cutting resistance is little, and the life-span is long.

In order to achieve the above object, the present invention adopts following technical proposals:

a kind of combination cutter, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of cutting blades or spiral cutting bar integratedly, on each cutting blade or spiral cutting bar, one cutting face or spiral cutting face arranged, axial anterior chamfering at cutting face or spiral cutting face, be formed with fillet surface, towards the cutting face of cutting direction or back side or the rear side of spiral cutting face, be rear cutting face, or secondary cutting face, or screw pair cutting face, cutting face or spiral cutting face, with rear cutting face, or secondary cutting face, or the screw pair cutting face is crossing, be formed with at least one cutting edge, or at least one chamfering blades, or at least one spiral cutting sword, described combination cutter is at various hand reamers, or various adjustable hand reamers, or various straight shank reamers, or various taper-shank reamers, or various long sword chucking reamers, or various band cutting edge inclination chucking reamers, or various helical edges reamers, or various adjustable reaming tool made of hard alloys, or various chucking reamers, or various expansion reamers, or various seam reamers, or various solid carbide reamers, or the cutting edge of other various reamers, or chamfering blades, or spiral cutting sword, be straight sword, or cone sword, or the reamer of helical edges, it is characterized in that: on combination cutter, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face on cutting direction or arc milling face, the composite screw cutting face of one-level inboard at least that is 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 the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting 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 vertically or arc extends to front end, or extend on cutting edge or spiral cutting sword 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 spiral cutting sword, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, 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 the higher and cutter of viscosity 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 the lower and cutter of viscosity when larger, 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 the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the cracking resistance height of efficiently cutting platform of cutting platform and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for more than or equal to 0.6 millimeter, or be less than or equal to any one cutting way of 1/3rd above structures of this tool diameter, or the formed combination sword of any combination of above cutting way arranges formed combination cutter on reamer.

a kind of combination cutter, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of cutting blades or spiral cutting bar integratedly, on each cutting blade or spiral cutting bar, one cutting face or spiral cutting face arranged, axial anterior chamfering at cutting face or spiral cutting face, be formed with fillet surface, towards the cutting face of cutting direction or back side or the rear side of spiral cutting face, be rear cutting face, or secondary cutting face, or screw pair cutting face, cutting face or spiral cutting face, with rear cutting face, or secondary cutting face, or the screw pair cutting face is crossing, be formed with at least one cutting edge, or at least one chamfering blades, or at least one spiral cutting sword, described combination cutter is at various hand reamers, or various adjustable hand reamers, or various straight shank reamers, or various taper-shank reamers, or various long sword chucking reamers, or various band cutting edge inclination chucking reamers, or various helical edges reamers, or various adjustable reaming tool made of hard alloys, or various chucking reamers, or various expansion reamers, or various seam reamers, or various solid carbide reamers, or the cutting edge of other various reamers, or chamfering blades, or spiral cutting sword, be straight sword, or cone sword, or the reamer of helical edges, on combination cutter, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face on cutting direction or arc milling face, the composite screw cutting face of one-level inboard at least that is 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 the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting 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 vertically or arc extends to front end, or extend on cutting edge or spiral cutting sword 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 spiral cutting sword, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, 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 the higher and cutter of viscosity 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 the lower and cutter of viscosity when larger, 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 the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the cracking resistance height of efficiently cutting platform of cutting platform and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for more than or equal to 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, it is characterized in that: in the cutting face, or arc milling face, or the inboard of spiral cutting face or rear portion, the combined cut face that arranges of projection, or compound arcuate cutting face, or composite screw cutting face, with the crossing cutting edge that forms in rear cutting face or screw pair cutting face, the corner of intersecting with the screw pair cutting edge, the part is set to the cracking resistance cutting table, and be formed with respectively and efficiently cut platform, the cutting edge that intersects with rear cutting face or local screw pair cutting edge are the cracking resistance cutting edge, extend and rear cutting face forward, or side cutting face, or the spiral cutting face on end face intersects, be formed with the cutting face of angle, what cave on the cutting face of this corner arranges arranged in step shape, outermost cutting face or spiral cutting face or arc milling face are that cracking resistance is cut platform, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, the cracking resistance that is formed with both sides is divided cutting blade, or cracking resistance is cut platform or efficiently cuts platform and decompose platform through arc convex or oblique projection and compound location and intersect, be formed with the angle 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 formed combination cutter on reamer.

a kind of combination cutter, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of cutting blades or spiral cutting bar integratedly, on each cutting blade or spiral cutting bar, one cutting face or spiral cutting face arranged, axial anterior chamfering at cutting face or spiral cutting face, be formed with fillet surface, towards the cutting face of cutting direction or back side or the rear side of spiral cutting face, be rear cutting face, or secondary cutting face, or screw pair cutting face, cutting face or spiral cutting face, with rear cutting face, or secondary cutting face, or the screw pair cutting face is crossing, be formed with at least one cutting edge, or at least one chamfering blades, or at least one spiral cutting sword, described combination cutter is at various hand reamers, or various adjustable hand reamers, or various straight shank reamers, or various taper-shank reamers, or various long sword chucking reamers, or various band cutting edge inclination chucking reamers, or various helical edges reamers, or various adjustable reaming tool made of hard alloys, or various chucking reamers, or various expansion reamers, or various seam reamers, or various solid carbide reamers, or the cutting edge of other various reamers, or chamfering blades, or spiral cutting sword, be straight sword, or cone sword, or the reamer of helical edges, on combination cutter, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face on cutting direction or arc milling face, the composite screw cutting face of one-level inboard at least that is 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 the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting 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 vertically or arc extends to front end, or extend on cutting edge or spiral cutting sword 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 spiral cutting sword, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, 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 the higher and cutter of viscosity 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 the lower and cutter of viscosity when larger, 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 the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the cracking resistance height of efficiently cutting platform of cutting platform and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for more than or equal to 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, or inboard or the rear portion of cutting face or arc milling face or spiral cutting face, the combined cut face that arranges of projection or compound arcuate cutting face or composite screw cutting face, with the cutting edge of rear cutting face or the crossing formation in screw pair cutting face and the corner that the screw pair cutting edge intersects, the part is set to the cracking resistance cutting table, and be formed with respectively and efficiently cut platform, the cutting edge that intersects with rear cutting face or local screw pair cutting edge are the cracking resistance cutting edge, extend and rear cutting face forward, or side cutting face, or the spiral cutting face on end face intersects, be formed with the cutting face of angle, what cave on the cutting face of this corner arranges arranged in step shape, outermost cutting face or spiral cutting face or arc milling face are that cracking resistance is cut platform, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, the cracking resistance that is formed with both sides is divided cutting blade, or cracking resistance is cut platform or efficiently cuts platform and decompose platform through arc convex or oblique projection and compound location and intersect, be formed with the angle more than or equal to 90 °, it is characterized in that: at 1 cutting edge, or spiral cutting sword, or chamfering blades, or side cutting edge, or on front cutting edge, also arc convex or oblique projection arranges 2 stair-stepping cracking resistance combined cutting edges of one-level at least, or cracking resistance composite screw cutting edge, or the compound chamfering blades of cracking resistance, or the compound front cutting edge of cracking resistance, and be formed with the stair-stepping 3 ladder swords of one-level at least, or 4 minutes cutting blades, at the cutting blade of various reamers or cutting cutter hub, at least on the cutting of one-level cutting edge or cracking resistance combined cutting edges or spiral cutting sword or cracking resistance composite screw cutting edge or side or the compound side cutting edge of cracking resistance, be provided with at least one 5 recess sword, or overlap the one-level 6 compound recess swords of cracking resistance at least on the recess sword, be opening to the cutting face, or spiral cutting face, or rear cutting face, or screw pair cutting face, or side cutting face, or cracking resistance combined cut face, or cracking resistance composite screw cutting face, or cracking resistance compound rear cutting face, or cracking resistance composite screw secondary cutting face, or the compound side of cracking resistance cutting face, extend to form and be at least one groove, or the compound groove of cracking resistance, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges formed combination cutter on reamer.

preferably, on the cutting face or spiral cutting face of described combination cutter, the setting of arc convex or oblique projection is the stair-stepping cracking resistance composite screw of one-level cutting face at least, or cracking resistance combined cut face, at least the secondary cutting face of the stair-stepping cracking resistance composite screw of one-level, or cracking resistance compound secondary cutting face, or the compound fillet surface of cracking resistance, or cracking resistance compound rear cutting face, and the stair-stepping cracking resistance combined cutting edges of one-level at least, or cracking resistance composite screw cutting edge, extend on anterior cutter head, on the anterior cutter head of cracking resistance combination cutter, cutting face towards cutting direction, or on spiral cutting face, be the stair-stepping cracking resistance combined cutting edges of one-level at least, or cracking resistance composite screw cutting edge, or the compound chamfering blades of cracking resistance, at cutting face or spiral cutting face, or fillet surface, with the stair-stepping cracking resistance combined cut of outermost one-level face, or cracking resistance composite screw cutting face, or the compound fillet surface of cracking resistance, for strengthening platform.

Preferably, on the anterior cutter head of described combination cutter, towards the cutting face of cutting direction, or on spiral cutting face, be the stair-stepping cutting edge of one-level at least, or chamfering blades, or the spiral cutting sword, or the cracking resistance combined cutting edges, or cracking resistance composite screw cutting edge, or on the compound chamfering blades of cracking resistance, be provided with at least one recess sword, be distributed in the cutting face, or spiral cutting face, or rear cutting face, or screw pair cutting face, or the side cutting face, or on fillet surface, be formed with at least one groove.

Preferably, at each cutting blade of described combination cutter, or the cutting cutter hub, or the front portion of the axial cutting direction of spiral cutting bar, or the front portion of the hand of spiral of spiral cutting bar, be formed with ladder sword or minute cutting blade of one-level at least.

Preferably, at each cutting blade or the cutting cutter hub of described combination cutter, or spiral cutting bar one, or combination, or seam together, dish type, or cylindrical, or the cutting edge of other various structures, or on the spiral cutting sword, be provided with stair-stepping cutting face, or cracking resistance composite screw cutting face, and be formed with the ladder sword of cracking resistance complex, or minute cutting blade, or the cracking resistance combination cutter of recess sword.

Preferably, be the locating hole location at the shank of tool of described combination cutter, or the locating slot location, or various staight shank, or the shank of tool of various taper shanks location.

preferably, on the cutterhead of described combination cutter, the cutting blade or the spiral cutting bar that arrange are integrated ground, or the compound alloy cutting blade that arranges of cracking resistance on cutterhead, or alloy spiral cutting bar, it is characterized in that, cutting blade, or spiral cutting bar, or the cutting blade of Integral alloy reamer, or the cutting edge of alloy spiral cutting bar, or chamfering blades, or spiral cutting sword, or cracking resistance combined cutting edges, or the compound chamfering blades of cracking resistance, or on cracking resistance composite screw cutting edge, at least one ladder sword is set, or minute cutting blade, or at least one recess sword, or the compound recess sword of cracking resistance, or at least one ladder sword is set simultaneously, or minute cutting blade or at least one recess sword.

Preferably, on the cutting face or fillet surface or spiral cutting face of described combination cutter, make chamfering blades also stepped.

Beneficial effect:

because the width and the cracking resistance that have defined the outermost cracking resistance and cut platform are cut platform is efficiently cut the difference in height of platform to adjacent inboard span and method, effectively solved the data problem of aborning the concrete production of this kind cutter being implemented, on the cutting face of combination cutter or spiral cutting face, arc convex or oblique projection is provided with one-level composite screw cutting face or combined cut face at least, the distribution of force that has decomposed cutting edge or spiral cutting sword, strengthened the breaking resistance of cutting edge or spiral cutting sword, cutting edge and cutting face have been strengthened, or the radiating effect of spiral cutting sword and spiral cutting face, thereby improved combination cutter stock-removing efficiency and extended service life of combination cutter, and combined cutting edges or composite screw cutting edge ladder sword or composite step sword, or 3 recess sword, or the 4 compound recess swords that overlap with the recess sword, various cutting edge or combination sword had both further improved efficient, enlarged again the scope of application of combination cutter.

Description of drawings:

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

Fig. 1, the 2nd, the schematic diagram of the combination cutter of the first embodiment of the present invention.

Fig. 3, the 4th, the schematic diagram of the combination cutter of the second embodiment of the present invention.

Fig. 5 is the schematic diagram of the combination cutter of the 3rd embodiment of the present invention.

Fig. 6 is the schematic diagram of the combination cutter of the 4th embodiment of the present invention.

Fig. 7, the 8th, the schematic diagram of the combination cutter of the 5th embodiment of the present invention.

The specific embodiment:

The below will explain the preferred embodiment of a kind of composite hinge cutter head of the present invention in conjunction with the drawings, mainly describe as example to have combined cutting edges or composite screw cutting edge or recess sword or ladder sword or minute cutting blade in embodiment 1-7, in the following description, identical parts use identical symbol and omit its specific description.

Embodiment 1:

as shown in Figure 2 in Fig. 1, the combination cutter of the first embodiment of the present invention, specifically hand reamer or chucking reamer or adjustable or combination or whole hard alloy or cutting edge 8 seam or one or other reamer or chamfering blades 9 or spiral cutting sword 8 are the reamer of straight sword or cone sword or helical edges, comprise the shank of tool 1 and cutterhead 2, this shank of tool 1 and cutterhead 2 connect or form as one, cutterhead 2 is provided with a plurality of cutting blades or spiral cutting bar 3 integratedly, on each cutting blade or spiral cutting bar 3, one cutting face 4 or spiral cutting face 4 are arranged, in the cutting face 4 or the axial anterior chamfering of spiral cutting face 4, be formed with fillet surface 17, towards the cutting face 4 of cutting direction or back side or the rear side of spiral cutting face 4, be rear cutting face 5, or secondary cutting face 6, or screw pair cutting face 6, cutting face 4 or spiral cutting face 4, with rear cutting face 5, or secondary cutting face 6, or screw pair cutting face 6 is crossing, be formed with at least one cutting edge 8, or at least one chamfering blades 9, or at least one spiral cutting sword 8, described combination cutter is at various hand reamers, or various adjustable hand reamers, or various straight shank reamers, or various taper-shank reamers, or various long sword chucking reamers, or various band cutting edge inclination chucking reamers, or various helical edges reamers, or various adjustable reaming tool made of hard alloys, or various chucking reamers, or various expansion reamers, or various seam reamers, or various solid carbide reamers, or the cutting edge 8 of other various reamers, or chamfering blades 9, or spiral cutting sword 8, be straight sword, or cone sword, or the reamer of helical edges, on combination cutter, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on cutting face 4 or spiral cutting face 4 on cutting direction, the composite screw cutting face that is provided with one-level inboard at least 11 through arc convex or oblique protruding 18 stepped projections, or arc convex or oblique protruding 18 extensions that erect, be formed with the compound location of intersecting with the composite screw cutting face 11 of inboard and decompose platform 14, with combined cutting edges 13 or compound chamfering cutting edge 15, the cutting face 4 of arranged in step shape, 11 or spiral cutting face 4, 11 for efficiently cutting platform, the cutting edge 8 of arranged in step shape, 13 or spiral cutting sword 8, 13 or chamfering cutting edge 9, 15 is efficient minute cutting blade, the outermost platform of efficiently cutting is that cracking resistance is cut platform 4, outermost efficient minute cutting blade 8, 9 divide cutting blade 8 for cracking resistance, 9, or arc convex or oblique protruding 18 extends vertically or arc extends to front end, or extend to the rear portion, or arc extends to cutting edge 8, 13, or spiral cutting sword 8, 13, or on chamfering cutting edge 9 or 15, be formed with the recessed sword of side or skew back sword 21, with stair-stepping cutting edge 8, 13, or stair-stepping spiral cutting sword 8, 13, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height h that efficiently cuts platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, 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 the higher and cutter of viscosity 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 the lower and cutter of viscosity when larger, 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 the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the cracking resistance height of efficiently cutting platform of cutting platform and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform is for more than or equal to 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter.

according to said structure, due on each cutting blade or cutting cutter hub 3 along the cutting face combined cut face 11 that is formed with or the compound rear cutting face 14 of 4 arc convex or oblique projection, make former cutting face 4 form very little cracking resistance and cut platform 4, and be formed with cracking resistance and divide cutting blade 8 to strengthen the specific heat load of cutting edge or spiral cutting sword 8 and chamfering blades 9, the setting of cracking resistance cutting table 21, and cracking resistance cutting edge 19 and cracking resistance cutting edge 20 have been formed, breaking resistance and the radiating effect of cutting edge have further been improved, make this milling cutter remain sharp and intensity, therefore improved efficient, extended service life, former cutting edge or spiral cutting sword 8 are decomposed make it stressed minimizing and intensity increases and therefore further improved efficient by recess sword 7 is set on cutting edge or spiral cutting sword 8 or chamfering blades 9 or combined cutting edges 13 or minute cutting blade 15, further extended service life, make cutting way with the whole stressed a plurality of local pressures that are decomposed into of cutter, the platform that dispels the heat has simultaneously effectively increased again heat sinking function, extended cutter life and keep high strength always in process.

Embodiment 2

as shown in Figure 4 in Fig. 3, the straight sword combination cutter of the seam type of the second embodiment of the present invention, specifically hand reamer or chucking reamer or adjustable or combination or whole hard alloy or cutting edge seam or one or other reamer or chamfering blades or spiral cutting sword are straight sword or cone sword or helical edges reamer, on the basis of the first embodiment effect, the present invention includes positioning handle 1 and cutterhead 2, this positioning handle 1 and cutterhead 2 form as one, cutterhead 2 connections or seam also are provided with a plurality of carbide cutting cutter hubs 3 with forming as one, on each carbide cutting cutter hub 3, one cutting face 4 is arranged, towards the back side in the cutting face 4 of cutting direction or rear side be rear cutting face 5 or side cutting face 6, cutting face 4 and rear cutting face 5, or front cutting face 6, or chamfering, cutting bevel 17, intersect and be formed with at least one cutting edge or spiral cutting sword 8 or at least one chamfering blades 9, the inboard in the cutting face 4 on cutting direction, arc convex or oblique protruding 18 inner bulge arrange at least that the stair-stepping combined cut face of one-level is namely efficiently cut platform 11 or compound rear cutting face is compound decomposition platform 14, and at least one fraction cutting blade 15, cutting face 4 forms cracking resistance and cuts platform 4, outermost cutting edge or spiral cutting sword 8 form cracking resistance and divide cutting blade 8, divide on cutting blade 8 or chamfering blades 9 or minute cutting blade 15 or combined cutting edges 13 in cracking resistance at least one recess sword 7 is set, be opening to the cutting face 4 or rear cutting face 5 extend to form and be at least one groove 16, chamfering blades 9 is formed with the ladder sword with an efficient minute cutting blade 15, or the rear portion in the cutting face 4 of the anterior corresponding position of chamfering, cutting bevel 17, the combined cut face that arranges of projection, cutting face 4 and chamfering, cutting bevel 17 or rear cutting face 5 are intersected and are formed with the corner that cracking resistance cutting edge 8 and chamfering blades 9 intersect, the part is set to cracking resistance cutting table 21 and cracking resistance, and to cut platform 4 effects identical, the cutting edge that intersects with rear cutting face or local cracking resistance cutting edge 20, the side cutting edge that intersects with chamfering, cutting bevel 17 or local cutting edge are cracking resistance cutting edge 19, cracking resistance cutting edge 19, cracking resistance cutting edge 20 divides cutting blade 8 effects identical with cracking resistance, what cracking resistance was cut platform 4 and adjacent inboard efficiently cuts height h between platform 3 for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, be formed with recess sword 7 on efficient minute cutting blade 8, or the cracking resistance height h that efficiently cuts platform 11 that cuts platform 4 and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform 4 is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, cracking resistance is cut platform 4 and is efficiently cut angle between platform 11 more than or equal to the angle a of 90 °, or inboard or the rear portion of cutting face 4 or spiral cutting face 4, the combined cut face 11 that arranges of projection or composite screw cutting face 11, with the cutting edges 8 of rear cutting face 5 or screw pair cutting face 5 crossing formation or the corner that screw pair cutting edge 8 intersects, the part is set to cracking resistance cutting table 22, and be formed with respectively and efficiently cut platform, cutting edge or the screw pair cutting edge of the part of intersecting with rear cutting face 5 or screw pair cutting face 5 are cracking resistance cutting edge 19, the chamfering cutting edge of the part of intersecting with chamfering, cutting bevel 17 is cracking resistance cutting edge 20, or cracking resistance is cut platform or efficiently cuts platform and decompose platform through arc convex or oblique projection and compound location and intersect, be formed with the angle a more than or equal to 90 °, at cutting edge 8, or spiral cutting sword 8, or chamfering blades 17, or side cutting edge, or on front cutting edge, also arc convex or oblique protruding 18 the setting stair-stepping combined cutting edges 13 of one-level at least, or composite screw cutting edge 13, or compound chamfering blades 15, or compound front cutting edge, and be formed with the stair-stepping ladder sword of one-level at least, or minute cutting blade, at the cutting blade of various reamers or cutting cutter hub 3, at least on one-level cutting edge 8 or combined cutting edges 13 or spiral cutting sword 8 or composite screw cutting edge 13 or chamfering cutting edge 9 or compound chamfering cutting edge 15, be provided with at least one recess sword 7, or overlap the compound recess sword of one-level at least on the recess sword, be opening to the cutting face 4, or spiral cutting face 4, or rear cutting face 5, or screw pair cutting face 5, or chamfering, cutting bevel 17, or combined cut face 13, or composite screw cutting face 13, extend to form and be at least one groove 16, or compound groove, the setting of above arbitrary cutting way on compound sword reamer, or arbitrary cutting way is at cutting edge, or side cutting edge, or front cutting edge, or on any cutting edge, carry out any combination formed combination sword is set.

Embodiment 3

as shown in Figure 5, the helical edges combination cutter of the 3rd embodiment of the present invention, specifically hand reamer or chucking reamer or adjustable or combination or whole hard alloy or cutting edge seam or one or other reamer or chamfering blades or spiral cutting sword are straight sword or cone sword or helical edges reamer, first---on the basis of two embodiment effects, the present invention includes positioning handle 1 and cutterhead 2, this positioning handle 1 and cutterhead 2 form as one, cutterhead 2 is provided with a plurality of cutting cutter hubs 3 integratedly, on each cutting cutter hub 3, one cutting face 4 is arranged, towards the back side in the cutting face 4 of cutting direction or rear side be rear cutting face 5 or side cutting face 6, cutting face 4 and rear cutting face 5, or front cutting face 6, or chamfering, cutting bevel 17, intersect and be formed with at least one cutting edge or spiral cutting sword 8 or at least one chamfering blades 9, the inboard in the cutting face 4 on cutting direction, arc convex or oblique protruding 18 inner bulge arrange at least that the stair-stepping combined cut face of one-level is namely efficiently cut platform 11 or compound rear cutting face is compound decomposition platform 14, and at least one fraction cutting blade 15, cutting face 4 forms cracking resistance and cuts platform 4, outermost cutting edge or spiral cutting sword 8 form cracking resistance and divide cutting blade 8, divide on cutting blade 8 or chamfering blades 9 or minute cutting blade 15 or combined cutting edges 13 in cracking resistance at least one recess sword 7 is set, be opening to the cutting face 4 or rear cutting face 5 extend to form and be at least one groove 16, chamfering blades 9 is formed with the ladder sword with an efficient minute cutting blade 15, or the rear portion in the cutting face 4 of the anterior corresponding position of chamfering, cutting bevel 17, the combined cut face that arranges of projection, cutting face 4 and chamfering, cutting bevel 17 or rear cutting face 5 are intersected and are formed with the corner that cracking resistance cutting edge 8 and chamfering blades 9 intersect, the part is set to cracking resistance cutting table 21 and cracking resistance, and to cut platform 4 effects identical, the cutting edge that intersects with rear cutting face or local cracking resistance cutting edge 20, the side cutting edge that intersects with chamfering, cutting bevel 17 or local cutting edge are cracking resistance cutting edge 19, cracking resistance cutting edge 19, cracking resistance cutting edge 20 divides cutting blade 8 effects identical with cracking resistance, what cracking resistance was cut platform 4 and adjacent inboard efficiently cuts height h between platform 3 for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, be formed with recess sword 7 on efficient minute cutting blade 8, or the cracking resistance height h that efficiently cuts platform 11 that cuts platform 4 and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform 4 is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, cracking resistance is cut platform 4 and is efficiently cut angle between platform 11 more than or equal to the angle a of 75 °.

Embodiment 4

as shown in Figure 6, the cone sword combination cutter of the 4th embodiment of the present invention, specifically hand reamer or chucking reamer or adjustable or combination or whole hard alloy or cutting edge seam or one or other reamer or chamfering blades or spiral cutting sword are straight sword or cone sword or helical edges reamer, first---on the basis of three embodiment effects, the present invention includes positioning handle 1 and cutterhead 2, this positioning handle 1 and cutterhead 2 form as one, cutterhead 2 is provided with a plurality of cutting cutter hubs 3 integratedly, on each cutting cutter hub 3, one cutting face 4 is arranged, towards the back side in the cutting face 4 of cutting direction or rear side be rear cutting face 5 or side cutting face 6, cutting face 4 and rear cutting face 5, or front cutting face 6, or chamfering, cutting bevel 17, intersect and be formed with at least one cutting edge or spiral cutting sword 8 or at least one chamfering blades 9, the inboard in the cutting face 4 on cutting direction, arc convex or oblique protruding 18 inner bulge arrange at least that the stair-stepping combined cut face of one-level is namely efficiently cut platform 11 or compound rear cutting face is compound decomposition platform 14, and at least one fraction cutting blade 15, cutting face 4 forms cracking resistance and cuts platform 4, outermost cutting edge or spiral cutting sword 8 form cracking resistance and divide cutting blade 8, divide on cutting blade 8 or chamfering blades 9 or minute cutting blade 15 or combined cutting edges 13 in cracking resistance at least one recess sword 7 is set, be opening to the cutting face 4 or rear cutting face 5 extend to form and be at least one groove 16, chamfering blades 9 is formed with the ladder sword with an efficient minute cutting blade 15, or the rear portion in the cutting face 4 of the anterior corresponding position of chamfering, cutting bevel 17, the combined cut face that arranges of projection, cutting face 4 and chamfering, cutting bevel 17 or rear cutting face 5 are intersected and are formed with the corner that cracking resistance cutting edge 8 and chamfering blades 9 intersect, the part is set to cracking resistance cutting table 21 and cracking resistance, and to cut platform 4 effects identical, the cutting edge that intersects with rear cutting face or local cracking resistance cutting edge 20, the side cutting edge that intersects with chamfering, cutting bevel 17 or local cutting edge are cracking resistance cutting edge 19, cracking resistance cutting edge 19, cracking resistance cutting edge 20 divides cutting blade 8 effects identical with cracking resistance, what cracking resistance was cut platform 4 and adjacent inboard efficiently cuts height h between platform 3 for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, be formed with recess sword 7 on efficient minute cutting blade 8, or the cracking resistance height h that efficiently cuts platform 11 that cuts platform 4 and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform 4 is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, cracking resistance is cut platform 4 and is efficiently cut angle between platform 11 more than or equal to the angle a of 75 °.

Embodiment 5

as shown in Figure 8 in Fig. 7, the whole hard alloy combination cutter of the second embodiment of the present invention, specifically hand reamer or chucking reamer or adjustable or combination or whole hard alloy or cutting edge seam or one or other reamer or chamfering blades or spiral cutting sword are straight sword or cone sword or helical edges reamer, first---on the basis of four embodiment effects, the present invention includes positioning handle 1 and cutterhead 2, this positioning handle 1 and cutterhead 2 form as one, cutterhead 2 is provided with a plurality of cutting cutter hubs 3 integratedly, on each cutting cutter hub 3, one cutting face 4 is arranged, towards the back side in the cutting face 4 of cutting direction or rear side be rear cutting face 5 or side cutting face 6, cutting face 4 and rear cutting face 5, or front cutting face 6, or chamfering, cutting bevel 17, intersect and be formed with at least one cutting edge or spiral cutting sword 8 or at least one chamfering blades 9, the inboard in the cutting face 4 on cutting direction, arc convex or oblique protruding 18 inner bulge arrange at least that the stair-stepping combined cut face of one-level is namely efficiently cut platform 11 or compound rear cutting face is compound decomposition platform 14, and at least one fraction cutting blade 15, cutting face 4 forms cracking resistance and cuts platform 4, outermost cutting edge or spiral cutting sword 8 form cracking resistance and divide cutting blade 8, divide cutting blade 8 or chamfering blades 9 or divide cutting blade 15 or cracking resistance to divide in cracking resistance at least one recess sword 7 is set on cutting blade 8, be opening to the cutting face 4 or rear cutting face 5 extend to form and be at least one groove 16, chamfering blades 9 is formed with the ladder sword with an efficient minute cutting blade 15, or the rear portion in the cutting face 4 of the anterior corresponding position of chamfering, cutting bevel 17, the combined cut face that arranges of projection, cutting face 4 and chamfering, cutting bevel 17 or rear cutting face 5 are intersected and are formed with the corner that cracking resistance cutting edge 8 and chamfering blades 9 intersect, the part is set to cracking resistance cutting table 21 and cracking resistance, and to cut platform 4 effects identical, the cutting edge that intersects with rear cutting face or local cracking resistance cutting edge 20, the side cutting edge that intersects with chamfering, cutting bevel 17 or local cutting edge are cracking resistance cutting edge 19, cracking resistance cutting edge 19, cracking resistance cutting edge 20 divides cutting blade 8 effects identical with cracking resistance, what cracking resistance was cut platform 4 and adjacent inboard efficiently cuts height h between platform 3 for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, be formed with recess sword 7 on efficient minute cutting blade 8, or the cracking resistance height h that efficiently cuts platform 11 that cuts platform 4 and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width h ' that cuts platform 4 is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, cracking resistance is cut platform 4 and is efficiently cut angle between platform 11 more than or equal to the angle a of 75 °.

By the cutting edge of reamer or chamfering blades are made as above the ladder sword or the structure of recess sword, cutter scope of the present invention can be used for various gang reamers, various taper sword reamer, various sword reamer, the various helical edges reamer of heading straight for.

According to said structure, owing to being formed with several recess swords 7 along cutting edge 8 on each cutting blade 3, recess sword 7 amplifies gradually shape and is distributed on cutting face 4 or rear cutting face 5 and forms groove 16 being backward on cutting direction, make cutting blade 3 whole stressed of reamer be decomposed into some little segmentations stressed, be equivalent to again increase chip breaking mouth and radiating groove by recess sword 7, make that the cutter work in-process is stressed to be reduced, frictional force reduces, keep cutter sharp, cutter life is extended, improved efficient.

By structure so, on the basis of the technique effect of embodiment 2, due on the cutting face of each cutting blade 3, increased is that recess sword 7 or ladder sword are cutting edge 8 and combined cutting edges 13, cutting edge 8 is resolved into some little cutting edges, and the cutting force that has decomposed cutting edge has reduced cutting resistance, has reduced the possibility of reamer fracture, and having improved operating efficiency, this technology can be applicable in various reamers.

By the cutting cutter tooth of hobboing cutter being made structure as above, can enlarge the scope of application of the present invention, improve the stock-removing efficiency of reamer and increase the service life.

although above Combined hobbing cutter take locating hole location is illustrated as example, what but cutter of the present invention also can be used for arc convex on the cutting face of all reamers or oblique projection arranges stair-stepping combined cut face or stair-stepping compound rear cutting face, form the stair-stepping combined cutting edges of one-level or compound side cutting edge at least, be provided with the recess sword on cutting edge or side cutting edge, be opening to the cutting face or side cutting face or rear cutting face extend to form and be groove, be provided with the recess sword on cutting edge or side cutting edge or combined cutting edges or compound side cutting edge, be opening to the cutting face or side cutting face or rear cutting face extend to form Combined hobbing cutter into the multiple combination of the mode of groove.

Above-described preferred embodiment is illustrative and not restrictive, in the situation that do not break away 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 the claim limited range all fall within the scope of the present invention.

Claims

1. combination cutter, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of cutting blades or spiral cutting bar integratedly, on each cutting blade or spiral cutting bar, one cutting face or spiral cutting face arranged, axial anterior chamfering at cutting face or spiral cutting face, be formed with fillet surface, towards the cutting face of cutting direction or back side or the rear side of spiral cutting face, be rear cutting face, or secondary cutting face, or screw pair cutting face, cutting face or spiral cutting face, with rear cutting face, or secondary cutting face, or the screw pair cutting face is crossing, be formed with at least one cutting edge, or at least one chamfering blades, or at least one spiral cutting sword, described combination cutter is at various hand reamers, or various adjustable hand reamers, or various straight shank reamers, or various taper-shank reamers, or various long sword chucking reamers, or various band cutting edge inclination chucking reamers, or various helical edges reamers, or various adjustable reaming tool made of hard alloys, or various chucking reamers, or various expansion reamers, or various seam reamers, or various solid carbide reamers, or the cutting edge of other various reamers, or chamfering blades, or spiral cutting sword, be straight sword, or cone sword, or the reamer of helical edges, it is characterized in that: on combination cutter, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face on cutting direction or arc milling face, the composite screw cutting face of one-level inboard at least that is 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 the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting 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 vertically or arc extends to front end, or extend on cutting edge or spiral cutting sword 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 spiral cutting sword, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, 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 the higher and cutter of viscosity 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 the lower and cutter of viscosity when larger, 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 the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the cracking resistance height of efficiently cutting platform of cutting platform and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for more than or equal to 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges formed combination cutter on reamer.

2. combination cutter, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of cutting blades or spiral cutting bar integratedly, on each cutting blade or spiral cutting bar, one cutting face or spiral cutting face arranged, axial anterior chamfering at cutting face or spiral cutting face, be formed with fillet surface, towards the cutting face of cutting direction or back side or the rear side of spiral cutting face, be rear cutting face, or secondary cutting face, or screw pair cutting face, cutting face or spiral cutting face, with rear cutting face, or secondary cutting face, or the screw pair cutting face is crossing, be formed with at least one cutting edge, or at least one chamfering blades, or at least one spiral cutting sword, described combination cutter is at various hand reamers, or various adjustable hand reamers, or various straight shank reamers, or various taper-shank reamers, or various long sword chucking reamers, or various band cutting edge inclination chucking reamers, or various helical edges reamers, or various adjustable reaming tool made of hard alloys, or various chucking reamers, or various expansion reamers, or various seam reamers, or various solid carbide reamers, or the cutting edge of other various reamers, or chamfering blades, or spiral cutting sword, be straight sword, or cone sword, or the reamer of helical edges, on combination cutter, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face on cutting direction or arc milling face, the composite screw cutting face of one-level inboard at least that is 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 the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting 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 vertically or arc extends to front end, or extend on cutting edge or spiral cutting sword 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 spiral cutting sword, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, 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 the higher and cutter of viscosity 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 the lower and cutter of viscosity when larger, 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 the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the cracking resistance height of efficiently cutting platform of cutting platform and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for more than or equal to 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, it is characterized in that: in the cutting face, or arc milling face, or the inboard of spiral cutting face or rear portion, the combined cut face that arranges of projection, or compound arcuate cutting face, or composite screw cutting face, with the crossing cutting edge that forms in rear cutting face or screw pair cutting face, the corner of intersecting with the screw pair cutting edge, the part is set to the cracking resistance cutting table, and be formed with respectively and efficiently cut platform, the cutting edge that intersects with rear cutting face or local screw pair cutting edge are the cracking resistance cutting edge, extend and rear cutting face forward, or side cutting face, or the spiral cutting face on end face intersects, be formed with the cutting face of angle, what cave on the cutting face of this corner arranges arranged in step shape, outermost cutting face or spiral cutting face or arc milling face are that cracking resistance is cut platform, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, the cracking resistance that is formed with both sides is divided cutting blade, or cracking resistance is cut platform or efficiently cuts platform and decompose platform through arc convex or oblique projection and compound location and intersect, be formed with the angle 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 formed combination cutter on reamer.

3. combination cutter, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of cutting blades or spiral cutting bar integratedly, on each cutting blade or spiral cutting bar, one cutting face or spiral cutting face arranged, axial anterior chamfering at cutting face or spiral cutting face, be formed with fillet surface, towards the cutting face of cutting direction or back side or the rear side of spiral cutting face, be rear cutting face, or secondary cutting face, or screw pair cutting face, cutting face or spiral cutting face, with rear cutting face, or secondary cutting face, or the screw pair cutting face is crossing, be formed with at least one cutting edge, or at least one chamfering blades, or at least one spiral cutting sword, described combination cutter is at various hand reamers, or various adjustable hand reamers, or various straight shank reamers, or various taper-shank reamers, or various long sword chucking reamers, or various band cutting edge inclination chucking reamers, or various helical edges reamers, or various adjustable reaming tool made of hard alloys, or various chucking reamers, or various expansion reamers, or various seam reamers, or various solid carbide reamers, or the cutting edge of other various reamers, or chamfering blades, or spiral cutting sword, be straight sword, or cone sword, or the reamer of helical edges, on combination cutter, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on the cutting face on cutting direction or arc milling face, the composite screw cutting face of one-level inboard at least that is 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 the composite screw cutting face of inboard and decompose platform, the spiral cutting face of arranged in step shape is for efficiently cutting platform, the cutting edge of arranged in step shape or spiral cutting 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 vertically or arc extends to front end, or extend on cutting edge or spiral cutting sword 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 spiral cutting sword, or the contextual definition that cracking resistance is cut platform or efficiently cut platform and the inboard adjacent height of efficiently cutting platform is, cracking resistance is cut platform or is efficiently cut platform and the height of efficiently cutting platform of adjacent inboard is that the depth of cut multiply by the product number, when work piece hardness or the higher and cutter of viscosity when larger, 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 the higher and cutter of viscosity 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 the lower and cutter of viscosity when larger, 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 the lower and cutter of viscosity hour, the cutting depth of cut is larger, the product number that the depth of cut is taken advantage of is less, or the cracking resistance height of efficiently cutting platform of cutting platform and adjacent inboard is for more than or equal to 0.01 millimeter, or less than 4/5ths of the thickness of the bits of discharging after this kind Tool in Cutting, or less than the height of the product number of 9 times of the cutting amount of feeding, or the cracking resistance width of cutting platform is for more than or equal to 0.6 millimeter, or be less than or equal to 1/3rd of this tool diameter, or inboard or the rear portion of cutting face or arc milling face or spiral cutting face, the combined cut face that arranges of projection or compound arcuate cutting face or composite screw cutting face, with the cutting edge of rear cutting face or the crossing formation in screw pair cutting face and the corner that the screw pair cutting edge intersects, the part is set to the cracking resistance cutting table, and be formed with respectively and efficiently cut platform, the cutting edge that intersects with rear cutting face or local screw pair cutting edge are the cracking resistance cutting edge, extend and rear cutting face forward, or side cutting face, or the spiral cutting face on end face intersects, be formed with the cutting face of angle, what cave on the cutting face of this corner arranges arranged in step shape, outermost cutting face or spiral cutting face or arc milling face are that cracking resistance is cut platform, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, the cracking resistance that is formed with both sides is divided cutting blade, or cracking resistance is cut platform or efficiently cuts platform and decompose platform through arc convex or oblique projection and compound location and intersect, be formed with the angle more than or equal to 90 °, it is characterized in that: at 1 cutting edge, or spiral cutting sword, or chamfering blades, or side cutting edge, or on front cutting edge, also arc convex or oblique projection arranges 2 stair-stepping cracking resistance combined cutting edges of one-level at least, or cracking resistance composite screw cutting edge, or the compound chamfering blades of cracking resistance, or the compound front cutting edge of cracking resistance, and be formed with the stair-stepping 3 ladder swords of one-level at least, or 4 minutes cutting blades, at the cutting blade of various reamers or cutting cutter hub, at least on the cutting of one-level cutting edge or cracking resistance combined cutting edges or spiral cutting sword or cracking resistance composite screw cutting edge or side or the compound side cutting edge of cracking resistance, be provided with at least one 5 recess sword, or overlap the one-level 6 compound recess swords of cracking resistance at least on the recess sword, be opening to the cutting face, or spiral cutting face, or rear cutting face, or screw pair cutting face, or side cutting face, or cracking resistance combined cut face, or cracking resistance composite screw cutting face, or cracking resistance compound rear cutting face, or cracking resistance composite screw secondary cutting face, or the compound side of cracking resistance cutting face, extend to form and be at least one groove, or the compound groove of cracking resistance, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges formed combination cutter on reamer.

4. described combination cutter as arbitrary in claim 1-3, it is characterized in that, on the anterior cutter head of described combination cutter, towards the cutting face of cutting direction, or on spiral cutting face, be the stair-stepping cutting edge of one-level at least, or chamfering blades, or the spiral cutting sword, or the cracking resistance combined cutting edges, or cracking resistance composite screw cutting edge, or on the compound chamfering blades of cracking resistance, be provided with at least one recess sword, be distributed in the cutting face, or spiral cutting face, or rear cutting face, or screw pair cutting face, or side cutting face, or on fillet surface, be formed with at least one groove.

5. described combination cutter as arbitrary in claim 1-3, is characterized in that, each cutting blade of described combination cutter, or cutting cutter hub, or the front portion of the axial cutting direction of spiral cutting bar, or the front portion of the hand of spiral of spiral cutting bar, be formed with ladder sword or minute cutting blade of one-level at least.

6. described combination cutter as arbitrary in claim 1-3, is characterized in that, each cutting blade of described combination cutter or cutting cutter hub, spiral cutting bar one, or combination, or seam is together, dish type, or cylindrical, or the cutting edge of other various structures, or on the spiral cutting sword, be provided with stair-stepping cutting face, or cracking resistance composite screw cutting face, and be formed with the ladder sword of cracking resistance complex, or minute cutting blade, or the cracking resistance combination cutter of recess sword.

7. combination cutter as described in as arbitrary in claim 1-3 is characterized in that, the shank of tool of described combination cutter is the locating hole location, or the locating slot location, or various staight shank, or the shank of tool of various taper shanks location.

8. combination cutter as described in as arbitrary in claim 1-3, it is characterized in that, on the cutterhead of described combination cutter, the cutting blade or the spiral cutting bar that arrange are integrated ground, or the compound alloy cutting blade that arranges of cracking resistance on cutterhead, or alloy spiral cutting bar, it is characterized in that, cutting blade, or spiral cutting bar, or the cutting blade of Integral alloy reamer, or the cutting edge of alloy spiral cutting bar, or chamfering blades, or spiral cutting sword, or cracking resistance combined cutting edges, or the compound chamfering blades of cracking resistance, or on cracking resistance composite screw cutting edge, at least one ladder sword is set, or minute cutting blade, or at least one recess sword, or the compound recess sword of cracking resistance, or at least one ladder sword is set simultaneously, or minute cutting blade or at least one recess sword.

9. described combination cutter as arbitrary in claim 1-3, it is characterized in that, on the cutting face or spiral cutting face of described combination cutter, the setting of arc convex or oblique projection is the stair-stepping cracking resistance composite screw of one-level cutting face at least, or cracking resistance combined cut face, at least the secondary cutting face of the stair-stepping cracking resistance composite screw of one-level, or cracking resistance compound secondary cutting face, or the compound fillet surface of cracking resistance, or cracking resistance compound rear cutting face, and the stair-stepping cracking resistance combined cutting edges of one-level at least, or cracking resistance composite screw cutting edge, extend on anterior cutter head, on the anterior cutter head of cracking resistance combination cutter, cutting face towards cutting direction, or on spiral cutting face, be the stair-stepping cracking resistance combined cutting edges of one-level at least, or cracking resistance composite screw cutting edge, or the compound chamfering blades of cracking resistance, at cutting face or spiral cutting face, or fillet surface, with the stair-stepping cracking resistance combined cut of outermost one-level face, or cracking resistance composite screw cutting face, or the compound fillet surface of cracking resistance, for strengthening platform.