CN103381505A

CN103381505A - Combination broach

Info

Publication number: CN103381505A
Application number: CN2012101460357A
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 broach with a high anti-crack tool cutting edge and easiness in positioning. The combination broach 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 cutting surface and an adjacent combination positioning decomposing table is larger than or equal to 90 degrees, the heights of adjacent combination 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 groove is formed in the combination cutting surface.

Description

A kind of combination broach

Technical field:

The present invention relates to a kind of broaching tool, this broaching tool is used for the pulling eye of the operations such as brill of machining.

Background technology:

The broaching tool 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 broaching tool has a plurality of cutting bars, on each cutting bar, a complete cutting edge is arranged, the cutting edge of this kind structure is the tapering broaching tool especially, integral body is stressed, resistance is very large, often cause the broaching tool fracture, products waste, even cause industrial accident, and the hand broaching tool, more require great effort when the pulling eye 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 broach 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 broach, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of bite pieces or cutting cutter tooth piece integratedly, on each bite piece or cutting cutter tooth piece, face towards cutting direction is the cutting face, the rear side in cutting face is rear cutting face, or the face of cutting face and both sides, rear cutting face is the side cutting face, intersect in cutting face and rear cutting face, be formed with at least one cutting edge or arc milling sword, the crossing side cutting edge that is formed with in cutting face and side cutting face, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broaches, or various path centring rectangular spline broaches, or various with side alligator groove broaching tool, or other various broaching tools, it is characterized in that: on combination broach, 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, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges formed combination broach on broaching tool.

a kind of combination broach, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of bite pieces or cutting cutter tooth piece integratedly, on each bite piece or cutting cutter tooth piece, face towards cutting direction is the cutting face, the rear side in cutting face is rear cutting face, or the face of cutting face and both sides, rear cutting face is the side cutting face, intersect in cutting face and rear cutting face, be formed with at least one cutting edge or arc milling sword, the crossing side cutting edge that is formed with in cutting face and side cutting face, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broaches, or various path centring rectangular spline broaches, or various with side alligator groove broaching tool, or other various broaching tools, on combination broach, 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, it is characterized in that: 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 spiral cutting face inboard or rear portion, projection the composite screw cutting face is set, intersect the cutting edge of formation and the corner that the screw pair cutting edge intersects with rear cutting face, 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 are the cracking resistance cutting table, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, be formed with the cracking resistance cutting edge of both sides, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform 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 broach on broaching tool.

a kind of combination broach, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of bite pieces or cutting cutter tooth piece integratedly, on each bite piece or cutting cutter tooth piece, face towards cutting direction is the cutting face, the rear side in cutting face is rear cutting face, or the face of cutting face and both sides, rear cutting face is the side cutting face, intersect in cutting face and rear cutting face, be formed with at least one cutting edge or arc milling sword, the crossing side cutting edge that is formed with in cutting face and side cutting face, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broaches, or various path centring rectangular spline broaches, or various with side alligator groove broaching tool, or other various broaching tools, it is characterized in that: on combination broach, 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 spiral cutting face inboard or rear portion, projection the composite screw cutting face is set, intersect the cutting edge of formation and the corner that the screw pair cutting edge intersects with rear cutting face, 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 are the cracking resistance cutting table, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, be formed with the cracking resistance cutting edge of both sides, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, it is characterized in that: cracking resistance is cut platform or is efficiently cut platform and the projection of compound decomposition platform intersection one arranges arc convex or oblique projection, and be formed with the 1 stair-stepping ladder sword of one-level or 2 minutes cutting blades at least, 3 at the cutting blade of various broaching tools or the cutting edge of one-level at least of cutting cutter hub, or side cutting edge, or front cutting edge, the arc milling sword, or curved side cutting edge, or cutting edge before arc, or cracking resistance combined cutting edges, or the compound side cutting edge of cracking resistance, or the compound front cutting edge of cracking resistance, or cracking resistance compound arcuate cutting edge, or cracking resistance compound arcuate side cutting edge, or be provided with at least one recess sword on cutting edge before the cracking resistance compound arcuate, 4 or the recess sword on overlap the compound recess sword of one-level cracking resistance at least, be opening to the cutting face, or side cutting face, or rear cutting face, or arc milling face, or curved side cutting face, or cutting face after arc, or combined cut face, or compound side cutting face, or compound rear cutting face, or compound arcuate cutting face, or compound arcuate side cutting face, or after compound arcuate, extend in the cutting face, form at least one groove, or the compound groove that overlaps on groove, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges formed combination broach on broaching tool.

Preferably, described combination broach is at various keyway broaches, various spline broaches, various straight spline broaches, various involute spline broaches, various path centring rectangular spline broaches, various with side alligator groove broaching tool cutting edge or side cutting edge or compound side cutting edge on be provided with at least one recess sword or compound recess sword is opening to the cutting face or side cutting face or rear cutting face have extended to form at least one groove or compound groove.

Preferably, described combination broach is at various keyway broaches, various spline broaches, various straight spline broaches, various involute spline broaches, various path centring rectangular spline broaches are provided with at least one recess sword or compound recess sword and are opening and amplify gradually shape and be distributed on cutting face or rear cutting face or side cutting face and be formed with at least one groove or compound groove on various side cutting edges with side alligator groove broaching tool.

Preferably, described combination broach relates to various keyway broaches, various spline broaches, various straight spline broaches, various involute spline broaches, various path centring rectangular spline broaches, various bands side alligator groove broaching tool and other polyhedron broaching tools.

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, by the combined cut face being set and being formed with arc convex or the reinforcement platform of oblique projection on the cutting face with the cutting cutter tooth of broaching tool, thereby the effect that this reinforcement platform has played heat radiation and cracking resistance to the cutting face has extended the service life of combination broach, by on cutting edge or side cutting edge or combined cutting edges or compound side cutting edge, the recess sword being set or compound recess sword has decomposed cutting resistance, improved the stock-removing efficiency of combination broach, strengthened the anti-bursting strength of the cutting edge of broaching tool.

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 is the keyway broach side-looking generalized section of the combination broach of the first embodiment of the present invention.

Fig. 2 is that the keyway broach of the combination broach of the first embodiment of the present invention is faced generalized section.

Fig. 3 is the keyway broach side-looking generalized section of the combination broach of the second embodiment of the present invention.

Fig. 4 is that the keyway broach of the combination broach of the second embodiment of the present invention is faced generalized section.

Fig. 5 is the path centring rectangular spline broach side-looking generalized section of the combination broach of the 3rd embodiment of the present invention.

Fig. 6 is that the path centring rectangular spline broach of the combination broach of the 3rd embodiment of the present invention is faced generalized section.

The specific embodiment:

The below will explain the preferred embodiment of a kind of combination broach of the present invention in conjunction with the drawings, in embodiment 1-7 mainly to have combined cutting edges or to strengthen platform or recess sword or ladder sword describe as example, 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 broach of the first embodiment of the present invention, compound keyway broach specifically, comprise the shank of tool 1 and cutterhead 2, this shank of tool 1 and cutterhead 2 form as one, cutterhead 2 is provided with a plurality of bite pieces or cutting cutter tooth piece 3 integratedly, on each bite piece or cutting cutter tooth piece 3, face towards cutting direction is cutting face 4, the rear side in cutting face 4 is rear cutting face 5, or the face of cutting face 4 and both sides, rear cutting face is side cutting face 6, intersect with rear cutting face 5 in cutting face 4, be formed with at least one cutting edge 8 or arc milling sword 8, cutting face 4 is intersected with side cutting face 6 and is formed with side cutting edges 9, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broaches, or various path centring rectangular spline broaches, or various with side alligator groove broaching tool, or other various broaching tools, on combination broach, integratedly, or connect and carry out with forming as one the setting of following technical scheme, on cutting face 4 or circular cutting face 4 on cutting direction, the combined cut face 11 of one-level inboard at least that is provided with through arc convex or oblique protruding 17 stepped projections, or arc convex or oblique protruding 17 extensions that erect, be formed with the compound location decomposition platform 15 crossing with the combined cut face 11 of inboard, cutting face 4 with combined cutting edges 12 arranged in step shapes, 11 for efficiently cutting platform, the cutting edge 8 of arranged in step shape, 12 or side cutting edge 9 be efficient minute cutting blade, the outermost platform 4 of efficiently cutting is cut platform 4 for cracking resistance, outermost efficient minute cutting blade 8, 9 divide cutting blade for cracking resistance, or arc convex or oblique protruding 17 extends vertically or arc extends to front end, or extend on cutting edge 8 to rear portion extension or arc, be formed with the recessed sword of side or skew back sword 21, with stair-stepping cutting edge 8, 12, or the contextual definition that cracking resistance is cut platform 4 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 h that efficiently cuts 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 h that efficiently cuts platform that cuts 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, or on the cutting face 4 of cutting edge and side cutting edge intersection, local depression be set to cracking resistance cutting table 20, the inboard forms efficiently cuts platform, the cutting edge 18 or the side cutting edge 19 that intersect with rear cutting face 5 or side cutting face 6 are the cracking resistance cutting edge, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle a more than or equal to 90 °, or cracking resistance is cut platform or is efficiently cut platform and the projection of compound decomposition platform 17 intersection one arranges arc convex or oblique protruding 17, and be formed with at least the stair-stepping ladder sword of one-level or minute cutting blade, at the cutting blade of various broaching tools or the cutting edge of one-level at least 8 of cutting cutter hub 3, or side cutting edge 9, or arc milling sword 8, or be provided with at least one recess sword 16 on curved side cutting edge 9, or overlap the compound recess sword 16 of one-level cracking resistance at least on the recess sword, be opening to the cutting face 4, or side cutting face 6, or rear cutting face 5, or arc milling face 4, or curved side cutting face 6, or cutting face 5 after arc, or combined cut face 11, or compound side cutting face, or compound rear cutting face, or compound arcuate cutting face, or compound arcuate side cutting face, or after compound arcuate, extend in the cutting face, form at least one groove 22, or the compound groove that overlaps on groove, the setting of above arbitrary cutting way on broaching tool, or arbitrary cutting way is at cutting edge, or side cutting edge, or on any cutting edge, carry out any combination the combination sword of the combination broach that forms is set.

according to said structure, due on each cutting blade or cutting cutter hub 3, 4 arc convex or oblique protruding 17 be formed with and efficiently cut platform 11 or compound decomposition platform 15 along the cutting face, make former cutting face 4 form very little cracking resistance and cut platform 4, and be formed with compound side cutting edge 13, strengthened the specific heat load of cutting edge 8 and side cutting edge 19, by the angle at cutting edge 8 and side cutting edge 13, cracking resistance cutting table 20 is set and has formed cracking resistance cutting table 20 and cracking resistance cutting edge 18, cracking resistance cutting edge 19, make this milling cutter protect all the time sharp and intensity, therefore improved efficient, extended service life, by at cutting edge 8, or side cutting edge 19, or compound side cutting edge 13, former cutting edge is decomposed make it stressed minimizing and the intensity increase, therefore further improved efficient, further extended service life, make cutting way with the whole stressed a plurality of local pressures that are decomposed into of cutter, strengthen simultaneously the cutting face and 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 combination broach of the second embodiment of the present invention, on the basis of the first embodiment, the present invention includes handle of a knife 1 and cutterhead 2, this handle of a knife 1 and cutterhead 2 form as one, cutterhead 2 is provided with a plurality of cutting cutter hubs 3 integratedly, the rear side towards the cutting face 4 of cutting direction at each cutting cutter hub 3 is rear cutting face 5, the face of the sidepiece in cutting face 4 is side cutting face 6, cutting face 4 and crossing at least one cutting edge 8 that is formed with in rear cutting face 5, cutting face 4 is intersected with side cutting face 6 and is formed with at least one side cutting edge 9, platform 11 is namely efficiently cut in the inboard arc convex in cutting face 4 or oblique protruding 17 the setting stair-stepping combined cut face of one-level at least, and the compound side cutting edge of one-level namely efficiently divides cutting blade 13 at least, 11, cutting face 4 and combined cut face are formed with compound decomposition platform 15, cutting face 4 forms cracking resistance and cuts platform 4, side cutting edge 9 and compound decomposition platform 15 are formed with the ladder sword with compound side cutting edge 13, arc convex or oblique protruding 17 intersects with side cutting face 6 and is formed with the recessed sword of side or skew back swords 21, what cracking resistance was cut platform 4 and adjacent inboard efficiently cuts height h between platform 11 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 4 is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, or the cracking resistance height h that efficiently cuts platform 3 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, / 3rd cracking resistances that are less than or equal to this tool diameter are cut platform 4 and are efficiently cut angle between platform 11 more than or equal to the angle a of 75 °, or inboard, cutting face or rear portion, the combined cut face that arranges of projection is namely efficiently cut platform 11, the cutting edge of formation and the corner that front cutting edge intersects are intersected in difference homonymy cutting face, cutting face and rear cutting face, the part is set to cracking resistance cutting table 20, the cutting edge that intersects with rear cutting face or local front cutting edge are cracking resistance cutting edge 18, side cutting edge 19 also has the cracking resistance effect, so be all the cracking resistance cutting edge, divide in cracking resistance and be formed with recess sword 16 on cutting blade 8, the cutting face extends to form fluted backward.

according to said structure, due on each cutting blade or cutting cutter hub 3, 4 arc convex or oblique protruding 17 be formed with and efficiently cut platform 11 or compound decomposition platform 15 along the cutting face, make former cutting face 4 form very little cracking resistance and cut platform 4, and be formed with compound side cutting edge 13, strengthened the specific heat load of cutting edge 8 and side cutting edge 19, by the angle at cutting edge 8 and side cutting edge 13, cracking resistance cutting table 20 is set and has formed cracking resistance cutting table 20 and cracking resistance cutting edge 18, cracking resistance cutting edge 19, make this milling cutter protect all the time sharp and intensity, therefore improved efficient, extended service life, by at cutting edge 8, or side cutting edge 19, or compound side cutting edge 13, on recess sword 16 is set, former cutting edge is decomposed make it stressed minimizing and the intensity increase, therefore further improved efficient, further extended service life, make cutting way with the whole stressed a plurality of local pressures that are decomposed into of cutter, strengthen simultaneously the cutting face and effectively increased again heat sinking function, extended cutter life and keep high strength always in process.

Embodiment 3

as shown in Figure 6 in Fig. 5, the spline combination broach of the 3rd embodiment of the present invention, first---on the basis of two embodiments, the present invention includes handle of a knife 1 and cutterhead 2, this handle of a knife 1 and cutterhead 2 form as one, cutterhead 2 is provided with a plurality of cutting cutter hubs 3 integratedly, the rear side towards the cutting face 4 of cutting direction at each cutting cutter hub 3 is rear cutting face 5, the face of the sidepiece in cutting face 4 is side cutting face 6, cutting face 4 and crossing at least one cutting edge 8 that is formed with in rear cutting face 5, cutting face 4 is intersected with side cutting face 6 and is formed with at least one side cutting edge 9, platform 11 is namely efficiently cut in the inboard arc convex in cutting face 4 or oblique protruding 17 the setting stair-stepping combined cut face of one-level at least, and the compound side cutting edge of one-level namely efficiently divides cutting blade 13 at least, 11, cutting face 4 and combined cut face are formed with compound decomposition platform 15, cutting face 4 forms cracking resistance and cuts platform 4, side cutting edge 9 and reinforcement platform 15 are formed with the ladder sword with compound side cutting edge 13, what cracking resistance was cut platform 4 and adjacent inboard efficiently cuts height h between platform 11 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 4 is for greater than 0.6 millimeter, be less than or equal to 1/3rd of this tool diameter, or the cracking resistance height h that efficiently cuts platform 3 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, / 3rd cracking resistances that are less than or equal to this tool diameter are cut platform 4 and are efficiently cut angle between platform 11 more than or equal to the angle a of 75 °, or inboard, cutting face or rear portion, the combined cut face that arranges of projection is namely efficiently cut platform 11, the cutting edge of formation and the corner that front cutting edge intersects are intersected in difference homonymy cutting face, cutting face and rear cutting face, the part is set to cracking resistance cutting table 20, the cutting edge that intersects with rear cutting face or local front cutting edge are cracking resistance cutting edge 18, side cutting edge 19 also has the cracking resistance effect, so be all the cracking resistance cutting edge.

By the cutting edge of broaching tool or side cutting edge are made as above the ladder sword or the structure of recess sword, cutter scope of the present invention can be used for various keyway broaches, various spline broaches, various straight spline broaches, various involute spline broaches, various bands sides alligator groove broaching tool.

By structure so, on the basis of the technique effect of embodiment 2, due on the cutting face of each cutting blade 3, cutting edge 8 is resolved into some little cutting edges, decompose cutting force and reduced cutting resistance, reduced the possibility of broaching tool fracture, and improved operating efficiency, this technology can be applicable in various broaching tools.

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

although above combination broach 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 broaching tools or oblique projection arranges stair-stepping combined cut face or stair-stepping compound rear cutting face, form the stair-stepping side cutting edge 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 compound side cutting edge, be opening to the cutting face or side cutting face or rear cutting face extend to form combination broach 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 broach, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of bite pieces or cutting cutter tooth piece integratedly, on each bite piece or cutting cutter tooth piece, face towards cutting direction is the cutting face, the rear side in cutting face is rear cutting face, or the face of cutting face and both sides, rear cutting face is the side cutting face, intersect in cutting face and rear cutting face, be formed with at least one cutting edge or arc milling sword, the crossing side cutting edge that is formed with in cutting face and side cutting face, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broaches, or various path centring rectangular spline broaches, or various with side alligator groove broaching tool, or other various broaching tools, it is characterized in that: on combination broach, 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, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges formed combination broach on broaching tool.

2. combination broach, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of bite pieces or cutting cutter tooth piece integratedly, on each bite piece or cutting cutter tooth piece, face towards cutting direction is the cutting face, the rear side in cutting face is rear cutting face, or the face of cutting face and both sides, rear cutting face is the side cutting face, intersect in cutting face and rear cutting face, be formed with at least one cutting edge or arc milling sword, the crossing side cutting edge that is formed with in cutting face and side cutting face, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broaches, or various path centring rectangular spline broaches, or various with side alligator groove broaching tool, or other various broaching tools, on combination broach, 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, it is characterized in that: 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 spiral cutting face inboard or rear portion, projection the composite screw cutting face is set, intersect the cutting edge of formation and the corner that the screw pair cutting edge intersects with rear cutting face, 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 are the cracking resistance cutting table, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, be formed with the cracking resistance cutting edge of both sides, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform 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 broach on broaching tool.

3. combination broach, comprise the shank of tool and cutterhead, this shank of tool and cutterhead form as one, cutterhead is provided with a plurality of bite pieces or cutting cutter tooth piece integratedly, on each bite piece or cutting cutter tooth piece, face towards cutting direction is the cutting face, the rear side in cutting face is rear cutting face, or the face of cutting face and both sides, rear cutting face is the side cutting face, intersect in cutting face and rear cutting face, be formed with at least one cutting edge or arc milling sword, the crossing side cutting edge that is formed with in cutting face and side cutting face, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broaches, or various path centring rectangular spline broaches, or various with side alligator groove broaching tool, or other various broaching tools, it is characterized in that: on combination broach, 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 spiral cutting face inboard or rear portion, projection the composite screw cutting face is set, intersect the cutting edge of formation and the corner that the screw pair cutting edge intersects with rear cutting face, 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 are the cracking resistance cutting table, with screw pair cutting face, the outside, or side cutting face, or intersect in rear cutting face, be formed with the cracking resistance cutting edge of both sides, or cracking resistance is cut platform, or efficiently cut platform and compound decomposition platform and intersect, be formed with the angle more than or equal to 90 °, it is characterized in that: cracking resistance is cut platform or is efficiently cut platform and the projection of compound decomposition platform intersection one arranges arc convex or oblique projection, and be formed with the 1 stair-stepping ladder sword of one-level or 2 minutes cutting blades at least, 3 at the cutting blade of various broaching tools or the cutting edge of one-level at least of cutting cutter hub, or side cutting edge, or front cutting edge, the arc milling sword, or curved side cutting edge, or cutting edge before arc, or cracking resistance combined cutting edges, or the compound side cutting edge of cracking resistance, or the compound front cutting edge of cracking resistance, or cracking resistance compound arcuate cutting edge, or cracking resistance compound arcuate side cutting edge, or be provided with at least one recess sword on cutting edge before the cracking resistance compound arcuate, 4 or the recess sword on overlap the compound recess sword of one-level cracking resistance at least, be opening to the cutting face, or side cutting face, or rear cutting face, or arc milling face, or curved side cutting face, or cutting face after arc, or combined cut face, or compound side cutting face, or compound rear cutting face, or compound arcuate cutting face, or compound arcuate side cutting face, or after compound arcuate, extend in the cutting face, form at least one groove, or the compound groove that overlaps on groove, the any one cutting way of above structure, or the formed combination sword of any combination of above cutting way arranges formed combination broach on broaching tool.

4. described combination broach as arbitrary in claim 1-3, it is characterized in that, described combination broach is at various keyway broaches, or various spline broaches, or various path centring rectangular spline broaches, or various straight spline broaches, or various involute spline broaches, or on various cutting edges or side cutting edge with side alligator groove broaching tool, be provided with at least one recess sword or compound recess sword, be that opening extends back or amplify gradually shape and extend, be distributed in the cutting face, or combined cut face, or rear cutting face, or on the side cutting face, be formed with at least one groove or compound groove.

5. described combination broach as arbitrary in claim 1-3, it is characterized in that, described combination broach is at various keyway broaches, or various spline broaches, or various straight spline broaches, or various involute spline broach, or various path centring rectangular spline broach, or various with side alligator groove broaching tool, or other various broaching tool first line of a couplet are connected to carbide cutting cutter piece or carbide cutting cutter tooth piece.

6. described combination broach as arbitrary in claim 1-3, it is characterized in that, on cutting face each cutting cutter tooth one of described combination broach or combination or seam polyhedron shape cutting cutter tooth together, be provided with stair-stepping combined cut face and compound rear cutting face or compound side cutting face, and be formed with the ladder sword of complex or the combination broach of minute cutting blade or recess sword.

7. combination broach as described in as arbitrary in claim 1-3 is characterized in that the broaching tool that compound sword is set of arc convex or oblique projection on the cutting face of the cutting cutter tooth of described combination broach.

8. combination broach as described in as arbitrary in claim 1-3, it is characterized in that, on the cutting edge of described combination broach or arc milling sword or side cutting edge, the recess sword is arranged, be opening to the cutting face, or the arc milling face, or side cutting face, or rear cutting face, or combined cut face, or compound arcuate cutting face, or compound rear cutting face, or extended to form at least one groove on compound side cutting face.

9. described combination broach as arbitrary in claim 1-3, it is characterized in that, described combination broach is at various keyway broaches, various spline broaches, various straight spline broaches, various involute spline broaches, various path centring rectangular spline broaches, various with side alligator groove broaching tool cutting edge or side cutting edge or compound side cutting edge on be provided with the stair-stepping combined cutting edges of one-level and the compound side cutting edge of one-level or arc milling sword at least at least, the stair-stepping table top of one-level at least that forms on cutting face or arc milling face or combined cut face or compound arcuate cutting face is for strengthening platform.