CN109262026A - A kind of accurate drilling machining cutter of axially position - Google Patents
A kind of accurate drilling machining cutter of axially position Download PDFInfo
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- CN109262026A CN109262026A CN201811300894.0A CN201811300894A CN109262026A CN 109262026 A CN109262026 A CN 109262026A CN 201811300894 A CN201811300894 A CN 201811300894A CN 109262026 A CN109262026 A CN 109262026A
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- Prior art keywords
- recessed
- peripheral surface
- protrusion
- central axis
- raised
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/02—Connections between shanks and removable cutting heads
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- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses a kind of accurate drilling machining cutters of axially position, the recessed and protrusion being mutually twisted is respectively equipped in the middle part of the middle part of outer peripheral surface and inner peripheral surface, recessed and protrusion is respectively about setting substantially symmetrical about its central axis, in the plane for crossing central axis, recessed symmetrical about recessed center line, protrusion is symmetrical about protrusion center line, and the distance between recessed center line to axial locating surface is M, protrusion center line to the distance between axial face is M ', should be met: 0≤M '-M≤0.05mm.The present invention has many advantages, such as that handling are quick, axial direction non-loosening, positioning accuracy is high, it is good with interchangeability to be simple to manufacture.
Description
Technical field
The present invention relates to the tool processed for drilling more particularly to a kind of accurate drilling machining cutters of axially position.
Background technique
In drilling processing, in order to extend the service life of cutting tip, generally use more valuable hard alloy or
Similar material is as cutter material, and since such material has the characteristics that hardness is high, wearability is good, processing is extremely difficult, this makes
It is all higher with material cost and processing cost to obtain drilling cutters.Currently used drilling cutters are usually by cutting part and clamping part
Part assembles, and the hard alloy or similar material that wherein cutting part is big by hardness, wear-resisting property is strong are made, and clamping part
Part is made of the material with larger elasticity, and cutting part can be individually replaced after cutting part is worn, and bores so as to reduce
Cut the cost of processing.But such general positioning accuracy of cutter is not high and is easy to fall off, the service life is short.
CN102015001011474 discloses a kind of drilling machining cutter, when being clamped using thread interference, although can be real
The interference clamping of existing screw thread, but to accurately control difficulty larger for pitch diameter of thread Interference size, while thread interference position occurs to exist
The two sides of form of thread, circumferentially centering ability is poor for contact area small bit tool, and axial locating surface completely attaches to, when batch is installed,
Axial, the circumferential bounce precision of cutter head is difficult to ensure.Again, the screw thread of cutter head and when torque face use, formed location structure,
When batch exchanges, torque face contact stability is poor.
Summary of the invention
The present invention provides a kind of quick handling, axial direction non-loosening, positioning accuracy height, is simple to manufacture the axial direction good with interchangeability
The drilling machining cutter of accurate positioning.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of accurate drilling machining cutter of axially position, including cutting part and hold assembly, the cutting part include cutting
Portion and the interconnecting piece for being connected to cutting portion lower end are cut, the interconnecting piece is equipped with multiple chip pockets through cutting portion, the company
Socket part is equipped with outer peripheral surface between adjacent chip pocket, and the cutting portion and interconnecting piece junction are equipped with the axial direction for axially position
Positioning surface, the hold assembly include shank and the clamping part positioned at shank forward end, and the clamping part is equipped with and chip pocket phase
Helicla flute corresponding and to shank extension, the clamping part are equipped between adjacent helicla flute for clamping the outer peripheral surface
Inner peripheral surface, the clamping part front end are equipped with axial face corresponding with axial locating surface, and the axial locating surface connects with axial face
It touches, the recessed and protrusion being mutually twisted, described recessed and protrusion is respectively equipped in the middle part of the middle part of the outer peripheral surface and inner peripheral surface
It is described to be recessed, the protrusion symmetrical about recessed center line in the plane for crossing central axis respectively about setting substantially symmetrical about its central axis
Symmetrical about protrusion center line, the distance between described recessed center line to axial locating surface is M, the protrusion center line to axis
It is M ' to the distance between face, should meets: 0≤M '-M≤0.05mm.
As further improvement to above-mentioned technical proposal:
Described be recessed is made of two recessed sides and the recessed bottom surface being connected between recessed side, and the recessed side is close
Recessed bottom surface one end is equipped with interior recessed side, and the protrusion is pushed up by two raised sides and the protrusion being connected between two raised sides
The composition in face, the protrusion side is being equipped with internal projection side close to inner peripheral surface side, when hold assembly clamps cutting part,
Gap between the axial locating surface and axial face is τ 1, and the interior of the recessed side of the separate axial locating surface side is recessed
Gap between side and the internal projection side of the raised side far from axial face side is τ 2, should be met: 1=τ of τ 2=0.
When hold assembly clamps cutting part, the interior recessed side of the close axial locating surface side and close axial direction
Gap between the internal projection side of face side is τ 3, should be met: 3≤0.1mm of 0mm≤τ.
The cutting portion, which is equipped with, is used for circumferentially positioned torque transfer surface, and the clamping part, which is equipped with, is used for circumferentially positioned week
To face, the torque transfer surface and circumferential face contact, when hold assembly clamps cutting part, the torque transfer surface and circumferential direction
Gap between face is τ 4, should be met: 4=0mm of τ.
The interconnecting piece is being equipped with bottom face with central axis far from cutting portion side, the recessed and bottom face it
Between be equipped with tiltedly recessed, the clamping part is being equipped with the groove bottom with central axis, the protrusion in one side direction of shank
It is set between groove bottom and is tiltedly recessed corresponding tail protrusion, it is described tiltedly recessed convex with tail when hold assembly clamps cutting part
Gap between rising is τ 5, should be met: 5≤0.1mm of 0.02mm≤τ.
In the clamping process of hold assembly clamping cutting part, the outer peripheral surface and inner peripheral surface cooperate modified mistake
The amount of being full of is λ, should be met: -0.1mm≤λ≤0.05mm.
The concave side face includes pushing up recessed side, and the recessed side in top is arranged close to outer peripheral surface, the protrusion
Side includes pushing up raised side, and the raised side in the top is close to raised top surface setting, when hold assembly clamps cutting part, institute
It states the raised side in top not contact with described be recessed, the recessed side in top is not contacted with the protrusion.
The recessed side further includes interior recessed side, and the interior recessed side, which is located at, pushes up recessed side and recessed bottom surface
Between, the convex side face includes internal projection side, and the internal projection side, which is located at, pushes up between raised side and raised top surface,
The diameter of the outer peripheral surface of the cutting part is D, and the radial depth of the interior recessed side is L, the diameter for pushing up recessed side
It is L1 to depth, the radial depth L ' of the internal projection side, the radial depth for pushing up raised side is L1 ', should meet:
0.02D≤L, L '≤0.15D, 0.003D≤L1, L1 '≤0.01D.
It is crossing in central axial plane, the constant distance of the projection line of the outer peripheral surface to central axis, the cutting part
Outer peripheral surface is torqued into during the inner peripheral surface of hold assembly, and the distance change amount of projection line to the central axis of the inner peripheral surface is △ R,
It should meet: 0 < △ R≤0.04mm.
When the recessed protrusion for being torqued into hold assembly completely of the cutting part, the recessed maximum with protrusion is circumferentially turned round
Entering angle is γ, should be met: 70 °≤γ≤130 °.
When being torqued into angle is 0.4 γ -0.65 γ, crossing in central axial plane, the projection line of the inner peripheral surface to center
The distance R of axis has minimum value.
When the recessed protrusion for being torqued into hold assembly of the cutting part, with the increase for being torqued into angle, the distance becomes
Change amount △ R is changed linearly.
It is crossing in central axial plane, the distance R of projection line to the central axis of the inner peripheral surface is constant, the cutting part
Outer peripheral surface is torqued into during the inner peripheral surface of hold assembly, is being crossed in central axial plane, the projection line of the outer peripheral surface to central axis
Distance change amount be △ R ', should meet: 0 < △ R '≤0.04mm.
When the recessed protrusion for being torqued into hold assembly completely of the cutting part, described recessed and protrusion maximum is circumferential to be turned round
Entering angle is γ, should be met: 70 °≤γ≤130 °.
When being torqued into angle is 0.4 γ -0.65 γ, crossing in central axial plane, the projection line of the inner peripheral surface to center
The distance R ' of axis has maximum value.
When the recessed protrusion for being torqued into hold assembly of the cutting part, with the increase for being torqued into angle, the distance becomes
Change amount △ R ' is changed linearly.
Compared with the prior art, the advantages of the present invention are as follows:
The accurate drilling machining cutter of axially position of the invention, Exact Design are being crossed in center cutter axial plane, and center is recessed
The distance between line and cutting part axial locating surface, protrusion center line and hold assembly axial face difference, hold assembly pass through
The clamping part for rotating cutting part is realized clamps the axial elasticity clamping of cutting part completely, in clamping process, hold assembly
Protrusion from far from cutting part one laterally adjacent to cutting part side deform, and then guarantee hold assembly in cutting part
Axial locating surface, interior recessed side carry out gapless up and down simultaneously to cutting part and clamp, so that cutting part is existed
Central axis direction is accurately positioned, and makes cutting part that any loosening not occur in central axis direction during the cutting process, improves cutting
Stability.
The accurate drilling machining cutter of axially position of the invention is recessed center line and cutting part axis by Exact Design
To the distance between positioning surface, protrusion center line and hold assembly axial face difference, even if cutting part manufacturing tolerance can not be kept away
The presence exempted from still can guarantee axial locating surface, interior recessed side and the torsion of cutting part when cutting part batch exchanges installation
Square transfer surface and hold assembly come into full contact with, and greatly improve the stability of different cutting part interchangeability and performance, are reducing
Cutting vibration greatly improves service life of cutting part while improve the surface quality in hole.
The accurate drilling machining cutter of axially position of the invention, the outer peripheral surface of cutting part and the inner peripheral surface of hold assembly
It is interference fitted, torque transfer surface, the circumferential surface circumferentially loaded is transmitted between cutting part, hold assembly and is come into full contact with, not only
Hold assembly can quickly and easily complete the clamping of cutting part, axial, circumferential twocouese of the cutting part in hold assembly
The elastic interference positioning of upper formation, has fine positioning intensity, precision and impact resistance.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the embodiment of the present invention.
Fig. 2 is the main view in the embodiment of the present invention.
Fig. 3 is the left view in the embodiment of the present invention.
Fig. 4 is the A-A cross-sectional view of Fig. 2.
Fig. 5 is the B-B cross-sectional view of Fig. 2.
Fig. 6 is cutting part schematic perspective view of the embodiment of the present invention.
Fig. 7 is the main view of cutting part in the embodiment of the present invention.
Fig. 8 is the C-C cross-sectional view of Fig. 7.
Fig. 9 is the D-D cross-sectional view of Fig. 7.
Figure 10 is the schematic perspective view of folder portion component in the embodiment of the present invention.
Figure 11 is hold assembly side view in the embodiment of the present invention.
Figure 12 is the F-F cross-sectional view of Figure 11.
Each label indicates in figure:
1, cutting part；11, cutting portion；111, cutting face；112, axial locating surface；113, torque transfer surface；12, interconnecting piece；
121, bottom face；13, outer peripheral surface；14, chip pocket；2, hold assembly；21, clamping part；211, groove top face；212, axial face；
213, groove bottom；214, circumferential surface；215, bottom is recessed；22, shank；23, inner peripheral surface；24, central axis；25, helicla flute；3, recessed
Into；31, it is recessed side；311, interior recessed side；312, recessed side is pushed up；32, it is recessed bottom surface；4, raised；41, raised side；
411, internal projection side；412, raised side is pushed up；42, raised top surface；5, tiltedly recessed；51, prism；52, inclined end face；6, tail is convex
It rises；61, caudal face；62, tail top surface；7, it is recessed center line；8, protrusion center line.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
Fig. 1 to Figure 12 shows the embodiment of the accurate drilling machining cutter of axially position of the invention, the axially position
Accurate drilling machining cutter includes cutting part 1 and hold assembly 2, and cutting part 1 and hold assembly 2 are right about central axis 24
Claim, cutting part 1 includes cutting portion 11 and the interconnecting piece 12 for being connected to 11 lower end of cutting portion, and hold assembly 2 includes 22 He of shank
Two are located at the clamping part 21 of 22 front end of shank, set on the cutting portion 11 of cutting part 1 there are two cutting edge, set on interconnecting piece 12
There are multiple chip pockets 14 through cutting portion 11, interconnecting piece 12 is equipped with outer peripheral surface 13, clamping part 21 between adjacent chip pocket 14
Helicla flute 25 corresponding and to the extension of shank 22, clamping part 21 with chip pocket 14 is equipped with to be equipped between adjacent helicla flute 25
For clamping the inner peripheral surface 23 of outer peripheral surface 13, middle part, bottom on outer peripheral surface 13 are respectively equipped with recessed 3, are tiltedly recessed 5, inner peripheral surface
Middle part, bottom on 23 are respectively equipped with raised 4, tail protrusion 6, and cutting portion 11,12 intersection of interconnecting piece are equipped with axial locating surface
112, clamping part 21 is equipped with and the corresponding axial face 212 of axial locating surface 112, the bottom face of the interconnecting piece 12 of cutting part 1
121 and hold assembly 2 clamping part 21 groove bottom 213 between be equipped with gap, the middle part on outer peripheral surface 13 is equipped with recessed 3, interior
In the middle part of circumferential surface 23 be equipped with protrusion 4, be recessed 3 around hold assembly 2 the vertical rotation in surface of central axis 24 accommodate protrusion 4 to occlusion realize
Clamping of the hold assembly 2 to 1 axial elasticity of cutting part, recessed 3 is symmetrical about recessed center line 7, and protrusion 4 is about convex center
Line 8 is symmetrical, and the distance between recessed center line 7 to axial locating surface 112 is M, and protrusion center line 8 is between axial face 212
Distance is M ', and axial play does not occur in order to guarantee that hold assembly 2 forms axial accurate positionin clamping to cutting part 1, improves
Recessed 3 and raised 4 contact area, should meet: 0≤M '-M≤0.05mm.In the present embodiment, M '-M=0.02mm.
Interference fit occurs for the outer peripheral surface 13 of cutting part 1 and the inner peripheral surface 23 of hold assembly to cutting part 1, clamping part
The torque transfer surface 113 circumferentially loaded is transmitted between part 2, circumferential surface 214 comes into full contact with, axis of the cutting part 1 in hold assembly 2
It is upwardly formed elastic interference positioning to, circumferential both sides, to guarantee that the inner peripheral surface 23 of hold assembly 2 can stablize resilient clamp cutting portion
The outer peripheral surface 13 of part 1, the groove bottom 213 of the clamping part 21 of hold assembly 2 are equipped with bottom recessed 215.Outer peripheral surface 13 and inner circumferential
Face 23 cooperates modified magnitude of interference to be λ, should meet: -0.1mm≤λ≤0.05mm.In the present embodiment, in order to improve clamping
Component 2 is to the clamping effect of cutting part 1, and for cutting part 1 during being torqued into hold assembly 2, hold assembly 2 is from gap to mistake
During being full of, magnitude of interference λ changes between -0.05~0.03mm, in the present embodiment, λ=0.02mm.
11 front end of cutting portion is equipped with cutting face 111, and 12 rear end of interconnecting piece is equipped with bottom face 121, cutting portion 11 and interconnecting piece
12 junctions are equipped with the axial locating surface 112 for axially position, and two clamping parts 21 are oppositely arranged along central axis 24, and middle part is equipped with
Mounting groove, 21 front end of clamping part are equipped with groove top face 211, and mounting groove rear end is equipped with groove bottom 213, along 24 direction of central axis,
Cutting portion 11 is equipped between cutting face 111, axial locating surface 112 and is used for circumferentially positioned torque transfer surface 113, clamping part 21
It is equipped with and the corresponding circumferential surface 214 of torque transfer surface 113 between groove top face 211 and axial face 212.
Recessed the 3 of 13 middle part of outer peripheral surface of the interconnecting piece 12 of cutting part 1 are by two recessed sides 31 and 32 structure of recessed bottom surface
At recessed side 31 is made of the recessed side 312 in interior recessed side 311 and top, and interior recessed side 311 is set close to recessed bottom surface 32
It sets, pushes up recessed side 312 and be arranged close to outer peripheral surface 13.
The protrusion 4 at 23 middle part of inner peripheral surface of clamping part 21 is made of two raised sides 41 and raised top surface 42, raised side
41 are made of the raised side 412 in internal projection side 411 and top, and internal projection side 411 is arranged close to inner peripheral surface 23, pushes up raised side
412 are arranged close to raised top surface 42.
It crosses in the plane of central axis 24, angle is greater than concave side in corresponding two between the recessed side 312 in two tops being recessed on 3
Angle between face 311, two push up angle between raised sides 412 and are greater than the angle for being recessed side 311 in corresponding two in protrusion 4,
And the angle of angle and two internal projection sides 411 in two between recessed side 311 is of substantially equal.In order to keep hold assembly 2 right
Cutting part 1 formed the stability and impact resistance that positioning clamping improves clamping, the clamping cutting part 1 completely of hold assembly 2
When, the gap between axial locating surface 112 and axial face 212 is τ 1, the interior recessed side far from 112 side of axial locating surface
Gap between 311 and the internal projection side 411 far from 212 side of axial face is τ 2, should be met: 1=τ of τ 2=0.I.e. far from axial
Interior recessed side 311 and the internal projection side 411 far from 212 side of axial face, axial locating surface 112 of 112 side of positioning surface
It is contacted with axial face 212.
3 112 side of close axial locating surface is recessed close to the internal projection side 411 of 212 side of axial face and clamping
Interior recessed side 311 cooperates, and pushes up raised side 412 and do not contact with interior recessed side 311.
When hold assembly 2 clamps cutting part 1, close to the interior recessed side 311 of 112 side of axial locating surface and close
Gap between the internal projection side 411 of 212 side of axial face is τ 3, should be met: 3≤0.1mm of 0mm≤τ.In the present embodiment, τ
3=0.03mm。
Along 24 direction of central axis, torque transfer surface 113 is contacted with circumferential surface 214, the clamping cutting completely of hold assembly 2
When component 1, the gap between torque transfer surface 113 and circumferential surface 214 is τ 4, for the stabilization for guaranteeing the circumferential clamping of cutting part 1
Property, it should meet: τ 4=0.
5 are tiltedly recessed being equipped with along 24 direction plane of central axis, between recessed the 3 of cutting portion 11 and bottom face 121, clamping
Portion 21 is equipped with and tiltedly recessed 5 corresponding tail protrusions 6, tail raised 6 are set between protrusion 4 and groove bottom 213, and tiltedly recessed 5 is oblique by one
Side 51 and an inclined end face 52 composition, tail protrusion 6 are made of caudal face 61 and tail top surface 62, and prism 51 does not connect with caudal face 61
Touching.Along 24 direction plane of central axis, tiltedly the gap between recessed 5 and tail protrusion 6 is τ 5, should be met: 0.02mm≤τ 5≤
0.1mm.In the present embodiment, 3=0.05mm of τ.
Recessed bottom surface 32, raised top surface 42 do not contact, in order to simplify structure and reduction of the hold assembly 2 to cutting part 1
Manufacture difficulty is being crossed in 24 plane of vertical center axis, and projection line to the central axis 24 of outer peripheral surface 13 has constant distance, cutting
Recessed the 3 of component 1 are torqued into during the protrusion 4 of hold assembly 2, the projection line of inner peripheral surface 23 on the interconnecting piece 12 of cutting part 1
Distance R to mandrel 24 in the heart is changed linearly with the increase for being torqued into angle, and variable quantity △ R, should be met: 0 < △ R≤
0.04mm, in order to guarantee that cutting part 1, hold assembly 2 have preferable intermountable, clamping position is accurate, the present embodiment
In, △ R=0.025mm.
It pushes up raised side 412 not contact with recessed 3, pushes up recessed side 312 and do not contacted with protrusion 4.In order to guarantee clamping part
Part 2 eliminates recessed the 3 of cutting part 1 and the protrusion 4 of hold assembly 2 to the positioning accuracy and grip strength of cutting part 1
Root can not back chipping and the influence to positioning and clamping, the diameter of the outer peripheral surface 13 of cutting part 1 is D, the diameter of interior recessed side 311
It is L to depth, the radial depth for pushing up recessed side 312 is L1, and internal projection side 411, the radial depth for pushing up raised side 412 are
L ', the radial depth for pushing up raised side 412 is L1 ', should be met: 0.02D≤L, L '≤0.15D, 0.003D≤L1, L1 '≤
0.01D.In the present embodiment, come into full contact with and positioning intensity to guarantee to push up raised side 412 and interior recessed side 311, L1=
0.06D, L2=0.07D.
Recessed the 3 of cutting part 1 when being torqued into the protrusion 4 of hold assembly 2 completely, and 4 circumferential direction of protrusion need to be rotated around central axis 24
Circumferential maximum is torqued into angle γ, should meet: 70 °≤γ≤130 °, in order to guarantee that cutting part 1 can be convenient for loading and unloading and guarantees to press from both sides
Component 2 is held to the enough intensity that is clamped with of cutting part 1, in the present embodiment, γ=100 °.
In order to guarantee that a hold assembly 2 can have preferable interchangeability, bonding strength with clamping difference cutting part 1,
In the plane for crossing central axis 24, when being actually torqued into angle is 0.4 γ -0.65 γ, the projection line of outer peripheral surface 13 to central axis
24 distance R has maximum interference amount, practical in the present embodiment in order to guarantee to have good installation convenience, high positioning intensity
When to be torqued into angle be 0.45 γ -0.55 γ, the distance R of the projection line of inner peripheral surface 23 to central axis 24 has maximum interference amount.
In the present embodiment, recessed the 3 of cutting part 1 are torqued into during the protrusion 4 of hold assembly 2, are crossing central axis 24
In plane, the constant distance of the projection line of inner peripheral surface 23 to central axis 24, the distance R of the projection line of outer peripheral surface 13 to central axis 24
For variable quantity, to reduce manufacture difficulty, the present invention is not limited only to this, can also be with according to the difference of manufacture difficulty and design method
4 mistake of protrusion of hold assembly 2 is torqued by the projection line of outer peripheral surface 13 to the constant distance of central axis 24, recessed the 3 of cutting part 1
Cheng Zhong, the distance R ' of the projection line of inner peripheral surface 23 to central axis 24 are changed linearly with the increase for being torqued into angle, and variable quantity is
△ R ' and it should meet: 0≤△ R '≤0.04mm.
In addition, according to technique difference is designed and manufactured, it can also be by the outer peripheral surface 13 on cutting part 1 to central axis 24
The distance of inner peripheral surface 23 to central axis 24 in distance and hold assembly 2 is designed as variation, to guarantee magnitude of interference.
In above embodiments, each cutting part 1 is set there are two cutting edge, and the present invention is not limited only to this, according to specifically answering
With different and duty parameter differences, single cutting part 1 can be equipped with to the cutting edge of three or more.Meanwhile it is above
In embodiment, recessed the 3 of cutting part 1 are torqued into during the protrusion 4 of hold assembly 2, and with the increase for being torqued into angle, distance becomes
Change amount △ R, △ R ' are changed linearly, and the present invention is not limited only to this, in order to improve the operation that cutting part 1 is torqued into hold assembly 2
Variable quantity △ R, △ R ' can also be designed to other variations such as conic section by convenience.
Although the present invention has been disclosed as a preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (16)
1. a kind of accurate drilling machining cutter of axially position, including cutting part (1) and hold assembly (2), the cutting portion
Part (1) includes cutting portion (11) and the interconnecting piece (12) for being connected to cutting portion (11) lower end, and the interconnecting piece (12) is equipped with more
A chip pocket (14) through cutting portion (11), the interconnecting piece (12) are equipped with outer peripheral surface between adjacent chip pocket (14)
(13), the cutting portion (11) and interconnecting piece (12) junction are equipped with the axial locating surface (112) for axially position, the folder
Holding component (2) includes shank (22) and the clamping part (21) for being located at shank (22) front end, and the clamping part (21) is equipped with and holds
Consider to be worth doing slot (14) it is corresponding and to shank (22) extend helicla flute (25), the clamping part (21) adjacent helicla flute (25) it
Between be equipped with inner peripheral surface (23) for clamping the outer peripheral surface (13), clamping part (21) front end is equipped with and axial locating surface
(112) corresponding axial face (212), the axial locating surface (112) contact with axial face (212), it is characterised in that: described
Recessed (3) that are mutually twisted and protrusion (4) are respectively equipped in the middle part of the middle part of outer peripheral surface (13) and inner peripheral surface (23), it is described recessed
(3) be symmetrical arranged with raised (4) respectively about central axis (24), in the plane for crossing central axis (24), recessed (3) about
Recessed center line (7) symmetrically, the protrusion (4) symmetrically about protrusion center line (8), determine to axial by the recessed center line (7)
The distance between plane (112) is M, and the distance between described protrusion center line (8) to axial face (212) is M ', should be met: 0
≤M’-M≤0.05mm。
2. drilling machining cutter according to claim 1, it is characterised in that: recessed (3) are by two recessed sides (31)
And the recessed bottom surface (32) being connected between recessed side (31) is constituted, the recessed side (31) is close to recessed bottom surface (32)
One end is equipped with interior recessed side (311), and the protrusion (4) is by two raised sides (41) and is connected between two raised sides (41)
Raised top surface (42) composition, it is described protrusion side (41) close to inner peripheral surface (23) side be equipped with internal projection side (411),
When hold assembly (2) clamp cutting part (1), the gap between the axial locating surface (112) and axial face (212) is τ
1, the interior recessed side (311) of the recessed side (31) of separate axial locating surface (112) side and far from axial face (212)
Gap between the internal projection side (411) of the raised side (41) of side is τ 2, should be met: 1=τ of τ 2=0.
3. drilling machining cutter according to claim 2, it is characterised in that: when hold assembly (2) clamp cutting part (1)
When, the internal projection of the interior recessed side (311) of close axial locating surface (112) side and close axial face (212) side
Gap between side (411) is τ 3, should be met: 3≤0.1mm of 0mm≤τ.
4. drilling machining cutter according to claim 3, it is characterised in that: the cutting portion (11) is equipped with for circumferential fixed
The torque transfer surface (113) of position, the clamping part (21), which is equipped with, is used for circumferentially positioned circumferential surface (214), the torque transmitting
Face (113) is contacted with circumferential surface (214), when hold assembly (2) clamp cutting part (1) when, the torque transfer surface (113) and
Gap between circumferential surface (214) is τ 4, should be met: 4=0mm of τ.
5. drilling machining cutter according to claim 4, it is characterised in that: the interconnecting piece (12) is far from cutting portion
(11) side is equipped with the bottom face (121) vertical with central axis (24), is equipped between recessed (3) and bottom face (121) oblique
Recessed (5), the clamping part (21) are being equipped with the groove bottom vertical with central axis (24) in (22) one side direction of shank
(213), it is set between raised (4) and groove bottom (213) and is tiltedly recessed (5) corresponding tail protrusion (6), when hold assembly (2)
When clamping cutting part (1), the gap between tiltedly recessed (5) and tail raised (6) is τ 5, should be met: 0.02mm≤τ 5≤
0.1mm。
6. drilling machining cutter according to any one of claim 1 to 5, it is characterised in that: clamped in hold assembly (2)
In the clamping process of cutting part (1), the outer peripheral surface (13) and inner peripheral surface (23) cooperate modified magnitude of interference to be λ, answer
Meet: -0.1mm≤λ≤0.05mm.
7. drilling machining cutter according to any one of claims 2 to 5, it is characterised in that: the recessed side (31)
Including pushing up recessed side (312), described push up recessed side (312) close outer peripheral surface (13) are arranged, the raised side (41)
Including pushing up raised side (412), the raised side (412) in the top is arranged close to raised top surface (42), when hold assembly (2) clamp
When cutting part (1), the raised side (412) in the top does not contact with recessed (3), described to push up recessed side (312) and institute
Raised (4) are stated not contact.
8. drilling machining cutter according to claim 7, it is characterised in that: the recessed side (31) further includes indent
Into side (311), the interior recessed side (311), which is located at, is pushed up between recessed side (312) and recessed bottom surface (32), and described is convex
Playing side (41) includes internal projection side (411), and the internal projection side (411), which is located at, pushes up raised side (412) and protrusion top
Between face (42), the diameter of the outer peripheral surface (13) of the cutting part (1) is D, the radial depth of the interior recessed side (311)
For L, the radial depth for pushing up recessed side (312) is L1, the radial depth L ' of the internal projection side (411), the top
The radial depth of raised side (412) is L1 ', should be met: 0.02D≤L, L '≤0.15D, 0.003D≤L1, L1 '≤
0.01D。
9. drilling machining cutter according to claim 8, it is characterised in that: it is crossing in central axis (24) plane, it is described outer
For the projection line of circumferential surface (13) to the constant distance of central axis (24), the outer peripheral surface (13) of the cutting part (1) is torqued into clamping part
During the inner peripheral surface (23) of part (2), the distance change amount of projection line to the central axis (24) of the inner peripheral surface (23) is △ R,
It should meet: 0 < △ R≤0.04mm.
10. drilling machining cutter according to claim 9, it is characterised in that: recessed (3) of the cutting part (1) are complete
When being torqued into protrusion (4) of hold assembly (2) entirely, the circumferential angle that is torqued into of the maximum of recessed (3) and raised (4) is γ, Ying Man
Foot: 70 °≤γ≤130 °.
11. drilling machining cutter according to claim 10, it is characterised in that: when be torqued into angle be 0.4 γ -0.65 γ
When, it is crossing in central axis (24) plane, the distance R of projection line to the central axis (24) of the inner peripheral surface (23) has minimum value.
12. drilling machining cutter according to claim 11, it is characterised in that: turn round recessed (3) of the cutting part (1)
When entering protrusion (4) of hold assembly (2), with the increase for being torqued into angle, the distance change amount △ R is changed linearly.
13. drilling machining cutter according to claim 8, it is characterised in that: it is crossing in central axis (24) plane, it is described interior
The distance R of the projection line of circumferential surface (23) to central axis (24) is constant, and the outer peripheral surface (13) of the cutting part (1) is torqued into clamping part
During the inner peripheral surface (23) of part (2), crossing in central axis (24) plane, the projection line of the outer peripheral surface (13) to central axis
(24) distance change amount is △ R ', should be met: 0 < △ R '≤0.04mm.
14. drilling machining cutter according to claim 13, it is characterised in that: recessed (3) of the cutting part (1) are complete
When being torqued into protrusion (4) of hold assembly (2) entirely, the circumferential angle that is torqued into of the maximum of recessed (3) and raised (4) is γ, Ying Man
Foot: 70 °≤γ≤130 °.
15. drilling machining cutter according to claim 14, it is characterised in that: when be torqued into angle be 0.4 γ -0.65 γ
When, it is crossing in central axis (24) plane, the distance R ' of projection line to the central axis (24) of the inner peripheral surface (23) has maximum value.
16. drilling machining cutter according to claim 15, it is characterised in that: turn round recessed (3) of the cutting part (1)
When entering protrusion (4) of hold assembly (2), with the increase for being torqued into angle, the distance change amount △ R ' is changed linearly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300894.0A CN109262026B (en) | 2018-11-02 | 2018-11-02 | A kind of accurate drilling machining cutter of axially position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300894.0A CN109262026B (en) | 2018-11-02 | 2018-11-02 | A kind of accurate drilling machining cutter of axially position |
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| Publication Number | Publication Date |
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| CN109262026A true CN109262026A (en) | 2019-01-25 |
| CN109262026B CN109262026B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811300894.0A Active CN109262026B (en) | 2018-11-02 | 2018-11-02 | A kind of accurate drilling machining cutter of axially position |
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| WO2020088190A1 (en) * | 2018-11-02 | 2020-05-07 | 株洲钻石切削刀具股份有限公司 | Stably clamped drilling machining tool |
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|---|---|
| CN109262026B (en) | 2019-08-09 |
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