CN101856735A - Drilling cutter and cam wrench used for assembling and disassembling same - Google Patents
Drilling cutter and cam wrench used for assembling and disassembling same Download PDFInfo
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- CN101856735A CN101856735A CN 201010217702 CN201010217702A CN101856735A CN 101856735 A CN101856735 A CN 101856735A CN 201010217702 CN201010217702 CN 201010217702 CN 201010217702 A CN201010217702 A CN 201010217702A CN 101856735 A CN101856735 A CN 101856735A
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- apex point
- hold assembly
- locating surface
- axial locating
- drilling process
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Abstract
The invention discloses a drilling cutter. The drilling cutter comprises a drill point part and a holding part, wherein the center of the bottom of the drill point part is provided with a fixed boss; the center of the top of the holding part is provided with a fixed seat capable of holding the fixed boss through elastic deformation; a slot which enables the fixed seat to elastically open is formed on the holding part; the slot is formed along a central axis of the cutter; the bottom of the slot is provided with two extension segments which are distributed in a V shape; and a pair of torsion acting surfaces are formed on two groove walls of the central section of the slot. The drilling cutter has the advantages of simple structure, easy and convenient assembling and disassembling process, no abrasion and durability. The invention also discloses a cam wrench used for assembling and disassembling the drilling cutter. The cam wrench comprises a handle part and a cam part which is connected with the handle part, wherein a radial cross section of the cam part is a rhombus with rounded four corners; a short diagonal of the rhombus is D1; and a long diagonal is D2; D2-D1 equals to delta d; D2:D1 equals to q; the delta d is more than or equal to 0.05 mm and is less than or equal to 1 mm; and the q is more than 1 and is less than or equal to 1.4.
Description
Technical field
The present invention relates to be used for the instrument of drilling processing, relate in particular to a kind of drilling process tool and be used to load and unload the cam spanner of this cutter.
Background technology
In drilling processing, the cutting tip of drilling process tool participates in cutting, in order to prolong the service life of cutting tip, usually adopt comparatively valuable carbide alloy or similar material to make cutting tip, because this type of material has hardness height, characteristics that wearability is good, so processing is difficulty very, this makes drilling cutters all higher with material cost and processing cost.One is to be assembled by cutting part and hold assembly for a drilling cutters commonly used at present, carbide alloy or materials similar that wherein cutting part is big by hardness, anti-wear performance is strong are made, and hold assembly is made by having bigger flexible material, after cutting part is worn, cutting part can be changed separately, thereby the drilling cost of processing can be reduced.
Publication number is that the Chinese patent literature of CN1585682A discloses a kind of cutting element, comprise sheath body and cutting part two parts, they have a dovetail shape structure respectively, this two-part swallowtail-shaped structure can cooperatively interact, elastic protrusion skew by sheath body produces deformation, cutting part is formed clamping, and by the cooperation perpendicular to the basal plane and the dovetail shape face of axis, two parts are stable to be connected and make.This instrument is by the connector acting surface in the slit of sheath body, transmit moment of torsion and elastic protrusion is offset, we find that there is following problem in it in the actual cut process: 1, radially area is bigger owing to elastic protrusion, when causing the loading and unloading cutting tip, extracting tool is stressed bigger, and the extracting tool lifting surface area is less, extracting tool and sheath body be as easy as rolling off a log impression to be occurred and damages, and the service life of reducing instrument, and when the loading and unloading cutting part, the subtended angle that elastic protrusion can reach is too small, cutting part is along the dovetail tongue-and-groove slippage of sheath body, unavoidably friction between the two, and the relatively poor relatively material of one employing anti-wear performance of sheath body is made, often make dovetail tongue-and-groove serious wear on the sheath body after loading and unloading several times, sheath body can't not have under the situation of external force cutting part to be formed reliable clamping, cause sheath body to lose efficacy; 2, sheath body and the cutting part swallowtail-shaped structure location by being parallel to each other when cutting part is subjected to the power parallel with swallowtail-shaped structure, causes cutting part to come off easily; 3, by swallowtail-shaped structure central circular groove cutting part and sheath body are felt relieved, this circular groove diameter is subjected to the restriction of swallowtail-shaped structure, the width that can only reach at most bottom swallowtail-shaped structure equates, so the centering effect that this circular groove can reach is limited.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provides a kind of simple in structure, and cargo handling process is easy and convenient, the nothing wearing and tearing, long-lived drilling process tool, and the cam spanner that is used to load and unload this cutter.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of drilling process tool, comprise apex point parts and hold assembly, the center of described apex point feature bottom is provided with fixing lug boss, the center at described hold assembly top is provided with the holder that can grip boss by strain, described hold assembly is provided with and can makes the open slit of holder elasticity, described slit is provided with along the axis of cutter, and the slit bottom is provided with the extension of two sections V-shaped distributions, and the slit middle part is provided with a pair of torsional interaction face in two cell walls.
The extension of described two sections V-shaped distributions is arranged in the axis bilateral symmetry.
The radial section of described fixing lug boss reduces to the tip gradually from the bottom of apex point parts, the faying face of described fixing lug boss and described holder be symmetrical centre on the axis, the fairing curved surface or the combinatorial surface that are centrosymmetric.
Described fixing lug boss is circular cone shape, and the cone angle of the described frustum of a cone is α
1, described holder is the conical grooves shape, and the cone angle of described conical grooves is α
2, 0.25 °＜α
1-α
2＜4 °.
The periphery of described apex point feature bottom is provided with circumferential alignment concavity, and the periphery at described hold assembly top is provided with the circumferential positioning boss face that cooperates with described circumferential alignment concavity.
Described apex point feature bottom is provided with apex point first axial locating surface and apex point second axial locating surface, described hold assembly top is provided with first axial locating surface and second axial locating surface, described apex point first axial locating surface closely contacts with first axial locating surface, and described apex point second axial locating surface closely contacts with second axial locating surface.
A kind of cam spanner that is used to load and unload above-mentioned drilling process tool comprises shank and the cam part that links to each other with shank, and the radial section of described cam part is the rhombus of four rounding of angle, and the short diagonal of described rhombus is D
1, long-diagonal is D
2, D
2-D
1=Δ d, D
2: D
1=q, 0.05mm≤Δ d≤1mm, 1＜q≤1.4.
Compared with prior art, the invention has the advantages that:
Drilling process tool of the present invention, the bottom of slit is provided with the extension of two sections V-shaped distributions on hold assembly, this slot configurations with V-arrangement extension can make the easier elasticity of holder on the hold assembly open, avoid between hold assembly and the handling instrument because of the stressed excessive impression that produces, but the open angle of holder elasticity is bigger simultaneously, the apex point parts are packed into or can avoid and the hold assembly friction when unloading, prevent that hold assembly from producing wearing and tearing in cargo handling process, make hold assembly durable in use, prolong service life, reduces production costs.The radial section of apex point feature bottom fixing lug boss reduces to the tip gradually from the bottom of apex point parts, make hold assembly not only produce chucking power radially to the apex point parts, also reality hold assembly the apex point component axial is compressed, simultaneously, the faying face of fixing lug boss and described holder is centrosymmetric fairing curved surface or the combinatorial surface of symmetrical centre on the axis, this makes the effect that can reach fine centering that combines of fixing lug boss and holder, guarantee the axiality of apex point parts and hold assembly, and can prevent that the apex point parts from radially from the hold assembly accidental, having improved clamping stability greatly.The radial section of the cam part of cam spanner of the present invention is the rhombus of four rounding of angle, limits by long and short cornerwise difference and ratio to rhombus, can avoid the distortion of hold assembly to exceed the limit of strain, prevents that plastic deformation from appearring in hold assembly.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of drilling process tool embodiment of the present invention;
Fig. 2 is the left TV structure schematic diagram of drilling process tool embodiment of the present invention;
Fig. 3 is the main TV structure schematic diagram of apex point parts among the drilling process tool embodiment of the present invention;
Fig. 4 is the main TV structure schematic diagram of hold assembly among the drilling process tool embodiment of the present invention;
Fig. 5 is the plan structure schematic diagram of hold assembly among the drilling process tool embodiment of the present invention;
Fig. 6 is the A-A cross section view of hold assembly among Fig. 2;
Fig. 7 is the perspective view of cam spanner embodiment of the present invention;
Fig. 8 is the perspective view of the drilling process tool being loaded and unloaded with cam spanner of the present invention.
Each label is represented among the figure:
1, apex point parts; 2, hold assembly; 3, axis; 4, cam part; 5, shank; 11, circumferential alignment concavity; 12, fixing lug boss; 13, apex point first axial locating surface; 14, apex point second axial locating surface, 21, circumferential positioning boss face; 22, holder; 23, slit; 24, extension; 25, torsional interaction face; 26, first axial locating surface; 27, second axial locating surface.
The specific embodiment
Fig. 1 to Fig. 6 shows a kind of drilling process tool embodiment of the present invention, this cutter comprises apex point parts 1 and hold assembly 2, the center of apex point parts 1 bottom is provided with fixing lug boss 12, the center at hold assembly 2 tops is provided with the holder 22 that can grip boss 12 by strain, hold assembly 2 is provided with and can makes the open slit 23 of holder 22 elasticity, slit 23 is provided with along the axis 3 of cutter, slit 23 bottoms are provided with the extension 24 of two sections V-shaped distributions, the extension 24 of two sections V-shaped distributions is 3 bilateral symmetry layout in the axis, slit 23 middle parts are provided with a pair of torsional interaction face 25 in two cell walls, this structure with slit 23 of V-arrangement extension 24 can make the holder 22 easier elasticity on the hold assembly 2 open, avoid between hold assembly 2 and the handling instrument because of the stressed excessive impression that produces, but the open angle of holder 22 elasticity is bigger simultaneously, apex point parts 1 are packed into or can avoid and hold assembly 2 frictions when unloading, prevent that hold assembly 2 from producing wearing and tearing in cargo handling process, make hold assembly 2 durable in use, prolong service life, reduces production costs.
In the present embodiment, the radial section of fixing lug boss 12 reduces to the tip gradually from the bottom of apex point parts 1, makes hold assembly 2 not only produce chucking power radially to apex point parts 1, has also realized the axial compression of 2 pairs of apex point parts 1 of hold assembly; Fixing lug boss 12 is symmetrical centre on axis 3 with the faying face of holder 22, the fairing curved surface or the combinatorial surface that are centrosymmetric, wherein the fairing curved surface can be taper surface, parabola or N curvilinear plane, combinatorial surface can be a plurality of planar combination, the combination of the combination of a plurality of curved surfaces or plane and curved surface, this makes the effect that can reach fine centering that combines of fixing lug boss 12 and holder 22, guarantee the axiality of apex point parts 1 and hold assembly 2, and can prevent that apex point parts 1 are radially from hold assembly 2 accidental, improved clamping stability greatly, in the present embodiment fixing lug boss 12 is set as circular cone shape, the cone angle of the frustum of a cone is α
1, holder 22 is the conical grooves shape, and the cone angle of conical grooves is α
2, 0.25 °＜α
1-α
2＜4 °, α in the present embodiment
1And α
2Difference be 1 °, reserved certain surplus that compresses for fixing lug boss 12 and combining of holder 22, guarantee to compress reliable.The periphery of apex point parts 1 bottom is provided with circumferential alignment concavity 11, and the periphery at hold assembly 2 tops is provided with circumferential positioning boss face 21, and circumferentially positioning boss face 21 cooperates with circumferential alignment concavity 11, realizes the circumferential location of apex point parts 1 and hold assembly 2; Apex point parts 1 bottom is provided with apex point first axial locating surface 13 and apex point second axial locating surface 14, hold assembly 2 tops are provided with first axial locating surface 26 and second axial locating surface 27, apex point first axial locating surface 13 closely contacts with first axial locating surface 26, apex point second axial locating surface 14 closely contacts with second axial locating surface 27, realizes the axial location of apex point parts 1 and hold assembly 2.
Fig. 7 and Fig. 8 show a kind of cam spanner embodiment of the present invention, this cam spanner is used for loading and unloading as the described drilling process tool of above-mentioned embodiment, this cam spanner comprises shank 5 and the cam part 4 that links to each other with shank 5, the radial section of cam part 4 is the rhombus of four rounding of angle, and the short diagonal of this rhombus is D
1, long-diagonal is D
2, D
2-D
1=Δ d, D
2: D
1=q, 0.05mm≤Δ d≤1mm, 1＜q≤1.4, in the present embodiment, Δ d=0.5mm, q=1.2, limit by long and short cornerwise difference and ratio, can avoid the distortion of hold assembly 2 to exceed the limit of strain, prevent that plastic deformation from appearring in hold assembly 2 rhombus.
Above-mentioned is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art under the situation that does not break away from the technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all should drop in the scope of technical solution of the present invention protection any simple modification, equivalent variations and modification that above embodiment did according to the technology of the present invention essence.
Claims (7)
1. drilling process tool, comprise apex point parts (1) and hold assembly (2), the center of described apex point parts (1) bottom is provided with fixing lug boss (12), the center at described hold assembly (2) top is provided with the holder (22) that can grip boss (12) by strain, it is characterized in that: described hold assembly (2) is provided with and can makes the open slit of holder (22) elasticity (23), described slit (23) is provided with along the axis (3) of cutter, slit (23) bottom is provided with the extension (24) of two sections V-shaped distributions, and slit (23) middle part is provided with a pair of torsional interaction face (25) in two cell walls.
2. drilling process tool according to claim 1 is characterized in that: the extension of described two sections V-shaped distributions (24) are (3) bilateral symmetry layout in the axis.
3. drilling process tool according to claim 1 and 2, it is characterized in that: the radial section of described fixing lug boss (12) reduces to the tip gradually from the bottom of apex point parts (1), and described fixing lug boss (12) is symmetrical centre (3) are gone up, are centrosymmetric in the axis fairing curved surface or combinatorial surface with the faying face of described holder (22).
4. drilling process tool according to claim 3 is characterized in that: described fixing lug boss (12) is circular cone shape, and the cone angle of the described frustum of a cone is α
1, described holder (22) is the conical grooves shape, and the cone angle of described conical grooves is α
2, 0.25 °＜α
1-α
2＜4 °.
5. drilling process tool according to claim 4, it is characterized in that: the periphery of described apex point parts (1) bottom is provided with circumferential alignment concavity (11), and the periphery at described hold assembly (2) top is provided with the circumferential positioning boss face (21) that cooperates with described circumferential alignment concavity (11).
6. drilling process tool according to claim 5, it is characterized in that: described apex point parts (1) bottom is provided with apex point first axial locating surface (13) and apex point second axial locating surface (14), described hold assembly (2) top is provided with first axial locating surface (26) and second axial locating surface (27), described apex point first axial locating surface (13) closely contacts with first axial locating surface (26), and described apex point second axial locating surface (14) closely contacts with second axial locating surface (27).
7. cam spanner that is used for loading and unloading as claim 1～6 drilling process tool as described in each, comprise shank (5) and the cam part (4) that links to each other with shank (5), it is characterized in that: the radial section of described cam part (4) is the rhombus of four rounding of angle, and the short diagonal of described rhombus is D
1, long-diagonal is D
2, D
2-D
1=Δ d, D
2: D
1=q, 0.05mm≤Δ d≤1mm, 1＜q≤1.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102177027A CN101856735B (en) | 2010-07-05 | 2010-07-05 | Drilling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102177027A CN101856735B (en) | 2010-07-05 | 2010-07-05 | Drilling cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101856735A true CN101856735A (en) | 2010-10-13 |
| CN101856735B CN101856735B (en) | 2012-01-18 |
Family
ID=42943021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102177027A Active CN101856735B (en) | 2010-07-05 | 2010-07-05 | Drilling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101856735B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014044001A1 (en) | 2012-09-21 | 2014-03-27 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996011079A1 (en) * | 1994-10-07 | 1996-04-18 | Kennametal Hertel Ag Werkzeuge + Hartstoffe | Drill with a drill point part |
| US6059492A (en) * | 1997-05-29 | 2000-05-09 | Iscar, Ltd. | Cutting tool assembly and replaceable cutting head for use therein |
| CN1585682A (en) * | 2001-11-13 | 2005-02-23 | 山特维克公司 | Rotatable tool for chip removing machining and appurtenant cutting part |
| CN1644285A (en) * | 2004-01-14 | 2005-07-27 | 山特维克公司 | Rotatable tool for chip removing machining |
| CN1689740A (en) * | 2004-04-20 | 2005-11-02 | 山特维克公司 | Rotatable tool for chip-removing machining |
| JP2006272472A (en) * | 2005-03-28 | 2006-10-12 | Kyocera Corp | Throwaway type drill |
-
2010
- 2010-07-05 CN CN2010102177027A patent/CN101856735B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996011079A1 (en) * | 1994-10-07 | 1996-04-18 | Kennametal Hertel Ag Werkzeuge + Hartstoffe | Drill with a drill point part |
| US6059492A (en) * | 1997-05-29 | 2000-05-09 | Iscar, Ltd. | Cutting tool assembly and replaceable cutting head for use therein |
| CN1585682A (en) * | 2001-11-13 | 2005-02-23 | 山特维克公司 | Rotatable tool for chip removing machining and appurtenant cutting part |
| CN1644285A (en) * | 2004-01-14 | 2005-07-27 | 山特维克公司 | Rotatable tool for chip removing machining |
| CN1689740A (en) * | 2004-04-20 | 2005-11-02 | 山特维克公司 | Rotatable tool for chip-removing machining |
| JP2006272472A (en) * | 2005-03-28 | 2006-10-12 | Kyocera Corp | Throwaway type drill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014044001A1 (en) | 2012-09-21 | 2014-03-27 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101856735B (en) | 2012-01-18 |
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