CN204413231U - A kind of four width fist shape sword layering drilling special blades - Google Patents
A kind of four width fist shape sword layering drilling special blades Download PDFInfo
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- CN204413231U CN204413231U CN201420706611.3U CN201420706611U CN204413231U CN 204413231 U CN204413231 U CN 204413231U CN 201420706611 U CN201420706611 U CN 201420706611U CN 204413231 U CN204413231 U CN 204413231U
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Abstract
The utility model discloses a kind of four width fist shape sword layering drilling special blades, comprise the blade body roughly in square; Blade body has upper and lower surface and side; Blade body is provided with the fastener hole on a through upper and lower surface, and the periphery of fastener hole is provided with front boss; The upper surface of blade body forms four main cutting edges with the crossing crest line of side, and four main cutting edges correspond to the four edges of square; Main cutting edge projects into fist shape shape in plane, and adjacent two main cutting edges are 90 ° of Rotational Symmetries relative to the central axis of fastener hole.The utility model has prevention bias, layering drilling function, thin, narrow and broken drilling cuttings can be produced and there is the combination properties such as smoothing hole wall, can effectively solve current major diameter shallow/the efficient drilling process of medium-length hole in, the technical problem of the serious restriction production efficiency such as hole precision not easily ensures, blade is easy to wear and chip removal has some setbacks; And there is the feature of the high and good processing accuracy of long service life, working (machining) efficiency.
Description
Technical field
The utility model relates to metal cutting tool field, particularly relates to a kind of four width fist shape sword layering drilling special blades.
Background technology
Along with machine-building is to high speed, efficient, high accuracy, automation direction development, and the appearance in succession of various difficult-to-machine material and extensive use, drilling efficiency, drilling quality, drilling life of bit and chip-breaking performance etc., become the leading indicator evaluating bit cutting performance.The appearance of Novel drill cutting knife tool, makes real highly-efficient hole be processed into possibility.
At present, the advanced countries such as the U.S., Sweden, Germany, Japan, Korea S are very ripe to the research of indexable drill, its product accounts for the share of 65% on drilling cutters market, and profit is up to 30 ~ 45%, its core technology is externally blocked, and relevant leading drill bit declares utility model patent, makes other rival to use for reference; Domestic only have only a few cutter enterprise independently can produce indexable drill, but the overwhelming majority imitates to use for reference standard type drill bit design, cannot form the special technology of oneself.
In addition, the drill tip tooth shape comparatively simple (straight line sword, single hop or two sections of curve swords) of domestic and international famous business men, wide and thin drilling cuttings cannot be broken into broken and narrow drilling cuttings, to make in drilling process that drill bit chip removal is smooth and easy must stronger coolant pressure, simultaneously, centering major part after present stage indexable drill insert installation is strong, and this will have the stronger drill body of rigidity to be fixed with regard to requiring; And the strong drill body difficulty of processing of rigidity is comparatively large, have a strong impact on the efficiency manufacturing drill bit.
Current drill insert, for three kinds of workpiece materials such as steel, stainless steel and cast irons and be drilling major diameter (>=Φ 28) shallow/medium-length hole process in, exist following not enough: 1, blade centering performance is not enough and easily produce inclined brill; 2, narrow and broken drilling cuttings cannot be formed, because drilling cuttings is large and wide and chip removal that is that cause is not smooth; 3, add existing drill insert heat dissipation design defectiveness, high temperature makes that drill tip is softening causes premature bit failure.
Utility model content
The purpose of this utility model is the deficiency overcoming prior art, a kind of four width fist shape sword layering drilling special blades are provided, there is prevention bias, layering drilling function, thin, narrow and broken drilling cuttings can be produced and there is the combination properties such as smoothing hole wall, can effectively solve current major diameter shallow/the efficient drilling process of medium-length hole in, the technical problem of the serious restriction production efficiency such as hole precision not easily ensures, blade is easy to wear and chip removal has some setbacks; Drilling special blade has the features such as the high and good processing accuracy of long service life, working (machining) efficiency.
The utility model solves the technical scheme that its technical problem adopts: a kind of four width fist shape sword layering drilling special blades, comprises the blade body roughly in square; Described blade body has upper surface, lower surface and connects the side on upper and lower surface; Described blade body is provided with the fastener hole on a through upper and lower surface, and the periphery of described fastener hole is provided with front boss; The upper surface of described blade body forms four main cutting edges with the crossing crest line of side, and described four main cutting edges correspond to the four edges of square; Described main cutting edge projects into fist shape shape, the fist shape namely held with a firm grip in plane, and adjacent two main cutting edges are 90 ° of Rotational Symmetries relative to the central axis of fastener hole.
Described main cutting edge is provided with chip-breaker to the extension of boss direction, front, and described chip-breaker is the fist shape shape corresponding with main cutting edge.
The main cutting edge of described fist shape shape is sequentially with the first male part, the second male part, the 3rd male part and the 4th male part clockwise, and the evagination size of the 4th male part is greater than the evagination size of the first male part, the evagination size of the 3rd male part is greater than the evagination size of the 4th male part, and the evagination size of the second male part is greater than the evagination size of the 3rd male part.
In described chip-breaker, be provided with V-arrangement strengthening boss near point of a knife place.
Duck's foot shape inner sunken face is set between described V-arrangement strengthening boss and front boss, and the bottom of duck's foot shape inner sunken face is chip-breaker bottom land, the end face of V-arrangement strengthening boss exceeds chip-breaker bottom land and is of a size of L1, the top of main cutting edge exceeds chip-breaker bottom land and is of a size of L2, the end face of front boss exceeds chip-breaker bottom land and is of a size of L3, wherein, L
1< L
2< L
3.
In described chip-breaker, trend along main cutting edge is provided with multiple eggshell shape anti-attrition boss exceeding chip-breaker bottom land, and the end face of eggshell shape anti-attrition boss exceeds chip-breaker bottom land is of a size of T1, the top of main cutting edge exceeds chip-breaker bottom land and is of a size of T2, the end face of front boss exceeds chip-breaker bottom land and is of a size of T3, wherein, T
1< T
2< T
3.
In described chip-breaker, be provided with kidney shape strengthening boss at the medium position near main cutting edge.
Fan-shaped inner sunken face is set between described kidney shape strengthening boss and front boss, and the bottom of fan-shaped inner sunken face exceeds chip-breaker bottom land is of a size of G1, the end face of kidney shape strengthening boss exceeds chip-breaker bottom land and is of a size of G2, the top of main cutting edge exceeds chip-breaker bottom land and is of a size of G3, the end face of front boss exceeds chip-breaker bottom land and is of a size of G4, wherein, G
1< G
2< G
3< G
4.
The side of described blade body forms rear knife face, and described rear knife face is set to two relief angle; After described point of a knife, knife face place is set to the excessive circular arc camber of finger-type.
A kind of four width fist shape sword layering drilling special blades of the present utility model, blade has 4 main cutting edges, and main cutting edge is the fist shape held with a firm grip; Blade adopts two relief angle design, and behind point of a knife place, knife face is designed to the excessive circular arc camber of finger-type; Blade rake face is provided with four width fist shape chip-breakers, and chip-breaker devises kidney shape strengthening boss near cutting edge position, chip-breaker bottom design has eggshell shape anti-attrition boss; Chip-breaker is counter considers face to be worth doing for small inclination and designs, and whole blade is fixed on drill body by trip bolt.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model have employed and 4 main cutting edges are designed to fist shape shape, the shape of every limit cutting edge to become to clench capitiform according to human engineering mechanics's principle design, whole blade edge is that the axis taking up solid screw hole by monolateral cutting edge divides the every half-twist of four width to be connected along profile, thus form four width fist shape swords, the advantage of fist shape sword is when contacting workpiece, inconsistent (the contact sequencing of each cutting edge section contact condition, contact direction and contact size etc.), therefore, just create layered cutting effect, so wide drilling cuttings that traditional straightway cutting edge can be produced is broken into some sections of narrow drilling cuttings, simultaneously, the active force load of the inconsistent direction of feed that blade is born of the contact condition of cutting edge section is effectively decomposed, thus reduce the mechanical load intensity of blade in drilling process, effective raising blade service life, this blade desired cut sword number is 4, economy is good,
2, the utility model have employed and is designed with V-arrangement strengthening boss at point of a knife place, point of a knife is played to well supporting and invigoration effect, reducing the degree of depth of chip-breaker simultaneously, when adopting less cutting data, can play good bending function to drilling cuttings at point of a knife place; Simultaneously, duck's foot shape inner sunken face is designed with at V-arrangement strengthening boss and blade front boss joining place, this curved surface is in bottom chip-breaker, effectively can not only reduce that blade is counter considers the stress that face and V-arrangement strengthen junction between boss to be worth doing and concentrate, V-arrangement can be assisted very well to strengthen boss carry out the curling of drilling cuttings and fracture simultaneously, and effective heat-transfer area that can effectively increase bottom point of a knife place chip-breaker, and there is the function storing cooling fluid;
3, the utility model have employed and is designed with eggshell shape anti-attrition boss by bottom four width fist shape sword layering drilling special blade periphery chip-breakers along cutting edge trend, add the effective heat-transfer area bottom chip-breaker, weaken the extrusion friction effect bottom drilling cuttings and chip-breaker, thus the heat transfer process reduced between blade-drilling cuttings, a large amount of heat in metal cutting is taken away by drilling cuttings, effectively reduces the drilling temperature of blade in drilling process;
4, the utility model have employed rake face in the middle part of monolateral fist shape sword and is designed with kidney shape strengthening boss, this kidney shape strengthening boss plays good invigoration effect to the stressed larger stage casing of fist shape sword, not only increase the mechanical strength in cutting edge stage casing, and can effectively split from stage casing fist shape sword, improve blade layering, step driling performance further; Simultaneously, fan-shaped inner sunken face is designed with at kidney shape strengthening boss and blade front boss joining place, reduce between anti-bits face-chip-breaker-kidney shape strengthening boss in conjunction with stress, improve the mechanical strength of blade middle part, add effective heat-transfer area in blade cut sword stage casing, can not only chip breaking be assisted, and good guide effect can be carried out to the drilling cuttings that two ends, left and right cutting edge produces;
5, the utility model have employed the design of two relief angle, and therefore after cutting edge, knife face place forms knife face after two relief angle; After blade point of a knife, knife face place is designed with the excessive circular arc camber of finger-type, thus makes point of a knife place wide-angle tilt degree larger than other position of blade, effectively can prevent the excessive wear of knife face after point of a knife like this; The excessive circular arc camber of finger-type not only increases the mechanical strength at the excessive circular arc place of knife face after point of a knife, makes the linking after adjacent two between knife face more firm simultaneously, improves the overall mechanical properties of blade; The excessive circular arc camber of finger-type, in conjunction with insert bottom, forms the finger-type L dimensional orientation of approximating anatomy's engineering mechanics in structure, thus makes blade overall structure more firm, improves the stationarity of drill bit in drilling process and axial centering property further.
Below in conjunction with drawings and Examples, the utility model is described in further detail; But a kind of four width fist shape sword layering drilling special blades of the present utility model are not limited to embodiment.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 is top view of the present utility model;
Fig. 3 is upward view of the present utility model;
Fig. 4 is the bottom-up front view of the utility model;
Fig. 5 is the sectional view along A-A line in Fig. 2;
Fig. 6 is the schematic diagram of the fist shape shape of main cutting edge of the present utility model;
Fig. 7 is the structural representation of main cutting edge of the present utility model;
Fig. 8 is the structural representation corresponding to point of a knife position of the present utility model;
Fig. 9 is the sectional view along B-B line in Fig. 8;
Figure 10 is the schematic diagram of duck's foot shape inner sunken face of the present utility model;
Figure 11 is the structural representation corresponding to main cutting edge medium position of the present utility model;
Figure 12 is the sectional view along C-C line in Figure 11;
Figure 13 is the schematic diagram of fan-shaped inner sunken face of the present utility model;
Figure 14 is the structural representation corresponding to monolateral main cutting edge of the present utility model;
Figure 15 is the sectional view along D-D line in Figure 14;
Figure 16 is the schematic diagram of the excessive circular arc camber of finger-type of knife face after point of a knife of the present utility model;
Figure 17 is drilling schematic diagram of the present utility model.
Detailed description of the invention
Embodiment
See shown in Fig. 1 to Figure 17, a kind of four width fist shape sword layering drilling special blades of the present utility model, comprise the blade body 100 roughly in square; Described blade body 100 has upper surface, lower surface and connects the side on upper and lower surface; Described blade body 100 is provided with the fastener hole 8 on a through upper and lower surface, and whole blade can utilize trip bolt to be fixed on drill body by fastener hole 8, and the periphery of described fastener hole 8 is provided with front boss 7; The upper surface of described blade body 100 forms four main cutting edges 1 with the crossing crest line of side, and described four main cutting edges 1 correspond to the four edges of square; Described main cutting edge 1 projects into fist shape shape, the fist shape (as shown in Figure 6) namely held with a firm grip in plane, and adjacent two main cutting edges 1 are 90 ° of Rotational Symmetries relative to the central axis of fastener hole 8; Lower surface is blade bottom surface 11.
Described main cutting edge 1 is provided with chip-breaker 12 to the extension of front boss 7 direction, and described chip-breaker 12 is the fist shape shape corresponding with main cutting edge.
As shown in Figure 7, the main cutting edge 1 of described fist shape shape is sequentially with the first male part I, second male part II, the 3rd male part III and the 4th male part IV clockwise, and the evagination size of the 4th male part IV is greater than the evagination size of the first male part I, the evagination size of the 3rd male part III is greater than the evagination size of the 4th male part IV, and the evagination size of the second male part II is greater than the evagination size of the 3rd male part III.With the 4th male part IV in little mothers and sons direction for reference data, the 3rd male part III is of a size of H relative to the evagination of the 4th male part IV
1; Second male part II is of a size of H relative to the evagination of the 4th male part IV
2; First male part I in forefinger direction is inwardly of a size of H relative to the 4th male part IV
3.Wherein the second male part II (middle finger position) is protruded the most.
In described chip-breaker 12, be provided with V-arrangement strengthening boss 2 near point of a knife place.
Duck's foot shape inner sunken face 3 is set between described V-arrangement strengthening boss 2 and front boss 7; As shown in Figure 9, the bottom of duck's foot shape inner sunken face 3 is chip-breaker bottom land, and the end face of V-arrangement strengthening boss 2 exceeds chip-breaker bottom land and is of a size of L1, the top of main cutting edge 1 exceeds chip-breaker bottom land and is of a size of L2, the end face of front boss 7 exceeds chip-breaker bottom land and is of a size of L3, wherein, and L
1< L
2< L
3.Duck's foot shape inner sunken face 3 be by bottom blade front boss 7, chip-breaker and the V-arrangement excessive arc-shaped surface of strengthening boss 2 intersection jointly form, whole curved surface is connected to form duck's foot shape (as shown in Figure 10).
In described chip-breaker, trend along main cutting edge is provided with multiple eggshell shape anti-attrition boss 4 exceeding chip-breaker bottom land, as shown in figure 15, the end face of eggshell shape anti-attrition boss 4 exceeds chip-breaker bottom land and is of a size of T1, the top of main cutting edge 1 exceeds chip-breaker bottom land and is of a size of T2, the end face of front boss 7 exceeds chip-breaker bottom land and is of a size of T3, wherein, and T
1< T
2< T
3.
In described chip-breaker, be provided with kidney shape strengthening boss 5 at the medium position near main cutting edge.
Fan-shaped inner sunken face 6 is set between described kidney shape strengthening boss 5 and front boss 7; As shown in figure 12, the bottom of fan-shaped inner sunken face 6 exceeds chip-breaker bottom land and is of a size of G1, the end face of kidney shape strengthening boss 5 exceeds chip-breaker bottom land and is of a size of G2, the top of main cutting edge 1 exceeds chip-breaker bottom land and is of a size of G3, the end face of front boss 7 exceeds chip-breaker bottom land and is of a size of G4, wherein, G
1< G
2< G
3< G
4.Overlook direction to see, fan-shaped inner sunken face 6 is flabellum shape (as shown in figure 13).
The side of described blade body 100 forms rear knife face 10, and described rear knife face is set to two relief angle; After described point of a knife, knife face place is set to the excessive circular arc camber 9 of finger-type.
A kind of four width fist shape sword layering drilling special blades of the present utility model, blade has 4 main cutting edges 1, the fist shape of main cutting edge 1 for holding with a firm grip; Blade adopts two relief angle design, and behind point of a knife place, knife face is designed to the excessive circular arc camber 9 of finger-type; Blade rake face is provided with four width fist shape chip-breakers 12, and chip-breaker 12 devises kidney shape strengthening boss 5 near cutting edge position, chip-breaker bottom design has eggshell shape anti-attrition boss 4; Chip-breaker is counter considers face to be worth doing for small inclination and designs, and whole blade is fixed on drill body by trip bolt.
A kind of four width fist shape sword layering drilling special blades of the present utility model, that 4 main cutting edges 1 are designed to fist shape shape, the shape of every limit cutting edge to become to clench capitiform according to human engineering mechanics's principle design, whole blade edge is that the axis taking up solid screw hole by monolateral cutting edge divides the every half-twist of four width to be connected along profile, thus form four width fist shape swords, the advantage of fist shape sword is when contacting workpiece, inconsistent (the contact sequencing of each cutting edge section contact condition, contact direction and contact size etc.), therefore, just create layered cutting effect, so wide drilling cuttings that traditional straightway cutting edge can be produced is broken into some sections of narrow drilling cuttings, simultaneously, the active force load of the inconsistent direction of feed that blade is born of the contact condition of cutting edge section is effectively decomposed, thus reduce the mechanical load intensity of blade in drilling process, effective raising blade service life, this blade desired cut sword number is 4, economy is good.
A kind of four width fist shape sword layering drilling special blades of the present utility model, V-arrangement strengthening boss 2 is designed with at point of a knife place, point of a knife is played and well supports and invigoration effect, reduce the degree of depth of chip-breaker at point of a knife place simultaneously, when adopting less cutting data, good bending function can be played to drilling cuttings; Simultaneously, duck's foot shape inner sunken face 3 is designed with blade front boss 7 joining place at V-arrangement strengthening boss 2, this curved surface is in bottom chip-breaker, effectively can not only reduce that blade is counter considers the stress that face and V-arrangement strengthen junction between boss to be worth doing and concentrate, V-arrangement can be assisted very well to strengthen boss 2 carry out the curling of drilling cuttings and fracture simultaneously, and effective heat-transfer area that can effectively increase bottom point of a knife place chip-breaker, and there is the function storing cooling fluid.
A kind of four width fist shape sword layering drilling special blades of the present utility model, be designed with eggshell shape anti-attrition boss 4 along cutting edge trend bottom four width fist shape sword layering drilling special blade periphery chip-breakers, add the effective heat-transfer area bottom chip-breaker, weaken the extrusion friction effect bottom drilling cuttings and chip-breaker, thus the heat transfer process reduced between blade-drilling cuttings, a large amount of heat in metal cutting is taken away by drilling cuttings, effectively reduces the drilling temperature of blade in drilling process; When stream of drill cuttings is through chip-breaker, eggshell shape anti-attrition boss 4 contacts with drilling cuttings, replaces conventional drilling cuttings and contacts the anti-bits face flowing to boss 7 place, blade front again bottom chip-breaker, thus playing anti-attrition effect.
A kind of four width fist shape sword layering drilling special blades of the present utility model, in the middle part of monolateral fist shape sword, rake face is designed with kidney shape strengthening boss 5, good invigoration effect is played in this kidney shape strengthening boss 5 pairs of stressed larger stage casings of fist shape sword, not only increase the mechanical strength in cutting edge stage casing, and can effectively split from stage casing fist shape sword, improve blade layering, step driling performance further; Simultaneously, fan-shaped inner sunken face 6 is designed with blade front boss 7 joining place at kidney shape strengthening boss 5, reduce between anti-bits face-chip-breaker-kidney shape strengthening boss in conjunction with stress, improve the mechanical strength of blade middle part, add effective heat-transfer area in blade cut sword stage casing, can not only chip breaking be assisted, and good guide effect can be carried out to the drilling cuttings that two ends, left and right cutting edge produces.
A kind of four width fist shape sword layering drilling special blades of the present utility model, have employed the design of two relief angle, and therefore after cutting edge, knife face place forms knife face 10 after two relief angle; After blade point of a knife, knife face place is designed with the excessive circular arc camber 9 of finger-type, thus makes point of a knife place wide-angle tilt degree larger than other position of blade, effectively can prevent the excessive wear of knife face after point of a knife like this; The excessive circular arc camber of finger-type not only increases the mechanical strength at the excessive circular arc place of knife face after point of a knife, makes the linking after adjacent two between knife face more firm simultaneously, improves the overall mechanical properties of blade; The excessive circular arc camber of finger-type, in conjunction with insert bottom, forms the finger-type L dimensional orientation of approximating anatomy's engineering mechanics in structure, thus makes blade overall structure more firm, improves the stationarity of drill bit in drilling process and axial centering property further.
Above-mentioned just preferred embodiment of the present utility model, not does any pro forma restriction to the utility model.Although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model.Any those of ordinary skill in the art, when not departing from technical solutions of the utility model scope, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as equivalents Equivalent embodiments.Therefore, every content not departing from technical solutions of the utility model, according to the utility model technical spirit to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solutions of the utility model protection.
Claims (11)
1. four width fist shape sword layering drilling special blades, comprise the blade body roughly in square; Described blade body has upper surface, lower surface and connects the side on upper and lower surface; Described blade body is provided with the fastener hole on a through upper and lower surface, and the periphery of described fastener hole is provided with front boss; The upper surface of described blade body forms four main cutting edges with the crossing crest line of side, and described four main cutting edges correspond to the four edges of square; It is characterized in that: described main cutting edge projects into fist shape shape in plane, and adjacent two main cutting edges are 90 ° of Rotational Symmetries relative to the central axis of fastener hole.
2. four width fist shape sword layering drilling special blades according to claim 1, is characterized in that: described main cutting edge is provided with chip-breaker to the extension of boss direction, front, and described chip-breaker is the fist shape shape corresponding with main cutting edge.
3. four width fist shape sword layering drilling special blades according to claim 1, it is characterized in that: the main cutting edge of described fist shape shape is sequentially with the first male part, the second male part, the 3rd male part and the 4th male part clockwise, and the evagination size of the 4th male part is greater than the evagination size of the first male part, the evagination size of the 3rd male part is greater than the evagination size of the 4th male part, and the evagination size of the second male part is greater than the evagination size of the 3rd male part.
4. four width fist shape sword layering drilling special blades according to claim 2, is characterized in that: in described chip-breaker, are being provided with V-arrangement strengthening boss near point of a knife place.
5. four width fist shape sword layering drilling special blades according to claim 4, it is characterized in that: between described V-arrangement strengthening boss and front boss, be set to duck's foot shape inner sunken face, and the bottom of duck's foot shape inner sunken face is chip-breaker bottom land, the end face of V-arrangement strengthening boss exceeds chip-breaker bottom land and is of a size of L1, the top of main cutting edge exceeds chip-breaker bottom land and is of a size of L2, the end face of front boss exceeds chip-breaker bottom land and is of a size of L3, wherein, and L
1< L
2< L
3.
6. four width fist shape sword layering drilling special blades according to claim 2 or 4, it is characterized in that: in described chip-breaker, trend along main cutting edge is provided with multiple eggshell shape anti-attrition boss exceeding chip-breaker bottom land, and the end face of eggshell shape anti-attrition boss exceeds chip-breaker bottom land is of a size of T1, the top of main cutting edge exceeds chip-breaker bottom land and is of a size of T2, the end face of front boss exceeds chip-breaker bottom land and is of a size of T3, wherein, and T
1< T
2< T
3.
7. four width fist shape sword layering drilling special blades according to claim 2 or 4, is characterized in that: in described chip-breaker, are provided with kidney shape strengthening boss at the medium position near main cutting edge.
8. four width fist shape sword layering drilling special blades according to claim 6, is characterized in that: in described chip-breaker, are provided with kidney shape strengthening boss at the medium position near main cutting edge.
9. four width fist shape sword layering drilling special blades according to claim 7, it is characterized in that: between described kidney shape strengthening boss and front boss, be set to fan-shaped inner sunken face, and the bottom of fan-shaped inner sunken face exceeds chip-breaker bottom land is of a size of G1, the end face of kidney shape strengthening boss exceeds chip-breaker bottom land and is of a size of G2, the top of main cutting edge exceeds chip-breaker bottom land and is of a size of G3, the end face of front boss exceeds chip-breaker bottom land and is of a size of G4, wherein, and G
1< G
2< G
3< G
4.
10. four width fist shape sword layering drilling special blades according to claim 8, it is characterized in that: between described kidney shape strengthening boss and front boss, be set to fan-shaped inner sunken face, and the bottom of fan-shaped inner sunken face exceeds chip-breaker bottom land is of a size of G1, the end face of kidney shape strengthening boss exceeds chip-breaker bottom land and is of a size of G2, the top of main cutting edge exceeds chip-breaker bottom land and is of a size of G3, the end face of front boss exceeds chip-breaker bottom land and is of a size of G4, wherein, and G
1< G
2< G
3< G
4.
11. four width fist shape sword layering drilling special blades according to claim 1, is characterized in that: the side of described blade body forms rear knife face, and described rear knife face is set to two relief angle; The excessive circular arc camber of finger-type is set at the rear knife face place corresponding to position of tool tip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420706611.3U CN204413231U (en) | 2014-11-20 | 2014-11-20 | A kind of four width fist shape sword layering drilling special blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420706611.3U CN204413231U (en) | 2014-11-20 | 2014-11-20 | A kind of four width fist shape sword layering drilling special blades |
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| Publication Number | Publication Date |
|---|---|
| CN204413231U true CN204413231U (en) | 2015-06-24 |
Family
ID=53463637
Family Applications (1)
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|---|---|---|---|
| CN201420706611.3U Withdrawn - After Issue CN204413231U (en) | 2014-11-20 | 2014-11-20 | A kind of four width fist shape sword layering drilling special blades |
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| CN (1) | CN204413231U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475827A (en) * | 2014-11-20 | 2015-04-01 | 厦门金鹭特种合金有限公司 | Special blade for laying drilling of four fist-shaped edges |
| CN111250769A (en) * | 2016-03-03 | 2020-06-09 | 住友电工硬质合金株式会社 | Cutting insert and cutting tool |
| CN113399713A (en) * | 2021-05-19 | 2021-09-17 | 赣州澳克泰工具技术有限公司 | Blade for hole machining |
-
2014
- 2014-11-20 CN CN201420706611.3U patent/CN204413231U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475827A (en) * | 2014-11-20 | 2015-04-01 | 厦门金鹭特种合金有限公司 | Special blade for laying drilling of four fist-shaped edges |
| CN111250769A (en) * | 2016-03-03 | 2020-06-09 | 住友电工硬质合金株式会社 | Cutting insert and cutting tool |
| CN111250769B (en) * | 2016-03-03 | 2021-09-03 | 住友电工硬质合金株式会社 | Cutting insert and cutting tool |
| CN113399713A (en) * | 2021-05-19 | 2021-09-17 | 赣州澳克泰工具技术有限公司 | Blade for hole machining |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20170405 |