CN205869540U - Micro -drill bit of fine grain tungsten alloy twolip unification - Google Patents
Micro -drill bit of fine grain tungsten alloy twolip unification Download PDFInfo
- Publication number
- CN205869540U CN205869540U CN201620626796.6U CN201620626796U CN205869540U CN 205869540 U CN205869540 U CN 205869540U CN 201620626796 U CN201620626796 U CN 201620626796U CN 205869540 U CN205869540 U CN 205869540U
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- China
- Prior art keywords
- twolip
- knife
- unification
- slot
- tungsten alloy
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Abstract
The utility model provides a micro -drill bit of fine grain tungsten alloy twolip unification, relates to machining cutter technical field, and it includes knife handle body (1), the cutter arbor body (2), locking bolt (3) and two bladed knife sharp (4), knife handle body (1) is equipped with the slot that is used for assembling the cutter arbor body, the slot is equipped with the locking hole, and the one end assembly of knife handle body (1) is in the slot of knife handle body (1) to lock through locking bolt (3), two bladed knife point (4) fixed connection is at the other end of knife handle body (1), be equipped with on the cutter arbor body (2) and move back bits groove (2 1 ) the utility model provides the precision of high twolip unification gouge bit, hardness, intensity, wearability and toughness increase the life that the slotted hole bored.
Description
Technical field
This utility model relates to machining tool technical field, is specifically related to the unification of a kind of fine grain tungsten alloy twolip
Microbit.
Background technology
Current pcb both domestic and external process tool manufacturing enterprise, micro-brill of the small-bore of manufactured 0.15mm, service life
The shortest, it is very easy to rupture in the course of processing, causes high laminate damaged, and burr and crooked feelings often occurs in aperture
Condition, impact boring quality, the hole wall quality that the conforming product rate of reduction PCB circuit board processes is poor.
Utility model content
The purpose of this utility model is contemplated to solve above-mentioned technical problem, and provides a kind of fine grain tungsten alloy twolip to close
The microbit of one.
This utility model includes toolholder body, knife bar body, clamping screw and twolip point of a knife, and described toolholder body is provided with for assembling
The slot of knife bar body, described slot is provided with locking hole, and one end of toolholder body is assemblied in the slot of toolholder body, and passes through locking screw
Bolt-lock is tight, and described twolip point of a knife is fixedly connected on the other end of toolholder body, and described knife bar body is provided with bit-withdrawing slot, described bit-withdrawing slot
Be respectively communicated with twolip point of a knife moves back bits mouth, and the cross section of described bit-withdrawing slot is half camber, and bit-withdrawing slot, moves back around array on knife bar body
The groove width of bits groove is d, 0.1mm≤d≤0.5mm.
Helical angle in described bit-withdrawing slot is α, 35 °≤α≤39 °.
Described knife bar body is fixedly mounted on toolholder body 1.
The effective length of described bit-withdrawing slot is s, 2mm≤s≤2.35mm.
Described toolholder body, knife bar body and twolip point of a knife use the hard integrally manufactured molding of superfine crystal tungsten alloy material.
This utility model has the advantage that this utility model optimizes the drill bit structure design of twolip unification groove, strengthens
Chip removal performance, reduces drill bit and hole wall friction, suppression drill point heating, reduces waste residue and produce, and then avoid bored circuit plate hole to go out
Existing broken needle, inclined hole, batch cutting edge of a knife or a sword and the generation of crooked situation；Use New Rigid superfine crystal tungsten alloy material, utilize CNC machine to carry out
Processing, improves the precision of twolip unification gouge bit, hardness, intensity, wearability and toughness, increases the service life that slotted eye bores.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1, toolholder body；2, knife bar body；2-1, bit-withdrawing slot；3, clamping screw；4, twolip point of a knife.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further.
As it is shown in figure 1, this utility model includes toolholder body 1, knife bar body 2, clamping screw 3 and twolip point of a knife 4, described handle of a knife
Body 1 is provided with the slot for assembling knife bar body, and described slot is provided with locking hole, and one end of toolholder body 1 is assemblied in inserting of toolholder body 1
In groove, and being locked by clamping screw 3, described twolip point of a knife 4 is fixedly connected on the other end of toolholder body 1, on described knife bar body 2
Be provided with that bit-withdrawing slot 2-1, described bit-withdrawing slot 2-1 be respectively communicated with twolip point of a knife 4 moves back bits mouth, and the cross section of described bit-withdrawing slot 2-1 is half
Camber, bit-withdrawing slot 2-1 is around array on knife bar body 2, and the groove width of bit-withdrawing slot 2-1 is d, 0.1mm≤d≤0.5mm.
Helical angle in described bit-withdrawing slot 2-1 is α, 35 °≤α≤39 °.
Described knife bar body 2 is fixedly mounted on toolholder body 1.
The effective length of described bit-withdrawing slot 2-1 is s, 2mm≤s≤2.35mm.
Described toolholder body 1, knife bar body 2 and twolip point of a knife 4 use the hard integrally manufactured molding of superfine crystal tungsten alloy material.
Working method and principle: optimize twolip unification groove drill bit structure design, strengthen chip removal performance, reduce drill bit with
Hole wall rubs, suppression drill point heating, reduces waste residue and produces, and then avoids bored circuit plate hole broken needle occur, inclined hole, criticizes cutting edge of a knife or a sword and askew
The tiltedly generation of situation；Use New Rigid superfine crystal tungsten alloy material, utilize CNC machine to be processed, improve twolip unification groove
The precision of drill bit, hardness, intensity, wearability and toughness, increase the service life that slotted eye bores.Toolholder body and knife bar body are arranged to
Can the mode of split, it is simple to installation and debugging, the bit-withdrawing slot of twolip point of a knife is designed to two-in-one, makes that whole to move back bits process more suitable
Freely, difficulty of processing is also reduced.
Use microbit of the present utility model can reach following performance indications:
(1) service life >=1500～2000 holes that the unification of high laminate Ф 0.15MM twolip is bored are bored.
(2) the circuit plate hole boring the unification traverse drill processing of high laminate Ф 0.15MM twolip is respond well, and position, hole precision exists
3mill, hole is slightly at 1mill, without burr and crooked situation.
(3) hole tolerance ± 0.02MM of the bit bore of high laminate Ф 0.15MM twolip unification groove is bored.
Embodiment of above is merely to illustrate this utility model, and is not limitation of the utility model, and relevant technology is led
The those of ordinary skill in territory, in the case of without departing from spirit and scope of the present utility model, it is also possible to make a variety of changes and
Modification, the technical scheme of the most all equivalents falls within category of the present utility model, and scope of patent protection of the present utility model should
It is defined by the claims.
Claims (5)
1. the microbit of fine grain tungsten alloy twolip unification, it is characterised in that it include toolholder body (1), knife bar body (2),
Clamping screw (3) and twolip point of a knife (4), described toolholder body (1) is provided with the slot for assembling knife bar body, and described slot is provided with lock
Tieholen, one end of toolholder body (1) is assemblied in the slot of toolholder body (1), and is locked by clamping screw (3), described double-edged knife
Point (4) is fixedly connected on the other end of toolholder body (1), and described knife bar body (2) is provided with bit-withdrawing slot (2-1), described bit-withdrawing slot (2-
1) be respectively communicated with twolip point of a knife (4) moves back bits mouth, and the cross section of described bit-withdrawing slot (2-1) is half camber, and bit-withdrawing slot (2-1) is around battle array
Being listed on knife bar body (2), the groove width of bit-withdrawing slot (2-1) is d, 0.1mm≤d≤0.5mm.
A kind of fine grain tungsten alloy twolip the most according to claim 1 unification microbit, it is characterised in that described in move back
The helical angle of bits groove (2-1) is α, 35 °≤α≤39 °.
The microbit of a kind of fine grain tungsten alloy twolip the most according to claim 1 unification, it is characterised in that described cutter
The body of rod (2) is fixedly mounted on toolholder body (1).
A kind of fine grain tungsten alloy twolip the most according to claim 1 unification microbit, it is characterised in that described in move back
The effective length of bits groove (2-1) is s, 2mm≤s≤2.35mm.
The microbit of a kind of fine grain tungsten alloy twolip the most according to claim 1 unification, it is characterised in that described cutter
Shank body (1), knife bar body (2) and twolip point of a knife (4) use the hard integrally manufactured molding of superfine crystal tungsten alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626796.6U CN205869540U (en) | 2016-06-21 | 2016-06-21 | Micro -drill bit of fine grain tungsten alloy twolip unification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626796.6U CN205869540U (en) | 2016-06-21 | 2016-06-21 | Micro -drill bit of fine grain tungsten alloy twolip unification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205869540U true CN205869540U (en) | 2017-01-11 |
Family
ID=57690910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620626796.6U Active CN205869540U (en) | 2016-06-21 | 2016-06-21 | Micro -drill bit of fine grain tungsten alloy twolip unification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205869540U (en) |
-
2016
- 2016-06-21 CN CN201620626796.6U patent/CN205869540U/en active Active
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| GR01 | Patent grant |