CN205733159U - For boring and the way-type drilling unit of aperture Double-side rounding - Google Patents
For boring and the way-type drilling unit of aperture Double-side rounding Download PDFInfo
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- CN205733159U CN205733159U CN201620647852.4U CN201620647852U CN205733159U CN 205733159 U CN205733159 U CN 205733159U CN 201620647852 U CN201620647852 U CN 201620647852U CN 205733159 U CN205733159 U CN 205733159U
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- cutter hub
- chamfering
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Abstract
The utility model discloses a kind of for holing and the way-type drilling unit of aperture Double-side rounding, including: cutter hub；Dado head, it includes holing cutter head assembly and having the least one set chamfering cutter head assembly presetting elastic force；Wherein, described boring cutter head assembly is arranged on the front end of cutter hub, and the lateral wall, side of described cutter hub is provided with at least one step-like mounting groove；The cutting edge of each described chamfering cutter head assembly is all arranged in the mounting groove coordinated with it in the way of prominent cutter hub outer surface one predetermined altitude, and each described cutting edge end is respectively provided with a predeterminable range bottom the mounting groove that distance is matched therewith.This utility model provides a kind of for boring and the way-type drilling unit of aperture Double-side rounding, it achieves the chamfering operation that can complete boring and two-sided aperture with a cutter, for traditional processing method, which shorten man-hour, improve production efficiency, reduce use cost and labour cost simultaneously.
Description
Technical field
This utility model relates to a kind of drilling tool used in the case of machining.More specifically, this utility model relates to
And a kind of be used in the case of machining for boring and the way-type drilling unit of aperture Double-side rounding.
Background technology
Currently when processing work piece, if work piece needs holes drilled through, and in the case of two sides, hole all needs chamfering,
Its processing method is typically completed by several operations, is first first to hole, then after having holed above the chamfering of that side,
Then by workpiece turn-over, and then the chamfering of that side, face of falling down.
And the major defect of Current protocols is: the processing mode that is current needs have bore cutter and aperture is fallen simultaneously
Two cuttves of angle cutter, high cost；Two is when hole under mouth is carried out chamfering, needs to process workpiece turn-over, Fei Renye
When taking a lot of work, reduce production efficiency.
Utility model content
A purpose of the present utility model is to solve at least the above and/or defect, and offer at least will be described later
Advantage.
This utility model is it is also an object that provide a kind of for boring and the way-type drilling unit of aperture Double-side rounding, and it leads to
Cross in the front of cutter hub equipped with boring cutter head assembly, to complete holes drilled through operation, cutter hub middle part having equipped with chamfering
The chamfering cutter head assembly of elastic force, to complete the chamfering of the top and bottom to through hole, its effect is to complete an operation
Holes drilled through and the chamfering of aperture upper and lower surface；Achieve the chamfering operation that can complete boring and two-sided aperture with a cutter,
For traditional processing method, which shorten man-hour, improve production efficiency, reduce use cost and work into simultaneously
This.
In order to realize according to these purposes of the present utility model and further advantage, it is provided that a kind of double for boring and aperture
The way-type drilling unit of surface chamfer, including:
Cutter hub；
Dado head, it includes holing cutter head assembly and having the least one set chamfering cutter head group presetting elastic force
Part；
Wherein, described boring cutter head assembly is arranged on the front end of cutter hub, and the lateral wall, side of described cutter hub is provided with platform
At least one mounting groove of scalariform；
The cutting edge of each described chamfering cutter head assembly be all arranged in the way of prominent cutter hub outer surface one predetermined altitude with
In its mounting groove coordinated, to complete the chamfering operation of hole to be processed upper surface during boring, and
Each described cutting edge end is respectively provided with a predeterminable range bottom the mounting groove that distance is matched therewith, with to be processed
After the chamfering of hole upper surface has operated, it is pressed in mounting groove by the pressure of hole wall, and then completes boring action and to be processed
The chamfering operation of hole lower surface.
Preferably, wherein, described cutter hub by a curved transition sections and then constitutes one with cutter hub axis in cutter hub front end
Line is the contraction flow region in the center of circle, to be defined hole depth by described curved transition sections.
Preferably, wherein, described chamfering cutter head assembly sets with its removably with cutter hub front end distance of scalable
Put in mounting groove, and then adapt to different drilling depths.
Preferably, wherein, described cutter hub is internally provided with and respectively leads to hole cutter head assembly and chamfering cutter head assembly
Helical flute also it is relatively set with on the cooling duct of each installation place, and the lateral wall of described cutter hub.
Preferably, wherein, described boring cutter head assembly includes first blade crossing cutter hub center, and is arranged on cutter
Second blade of body front end outer side.
Preferably, wherein, each described chamfering cutter head assembly all includes that a fixture, the front end of each described fixture are all provided with
Being equipped with the 3rd blade for chamfering, each described 3rd blade is all set to have two cutting edges being oppositely arranged,
And described cutting edge is respectively provided with a predetermined inclination angle, operate completing the chamfering of upper and lower surface.
Preferably, wherein, each described 3rd blade all offers front chamfered groove, and the outer rim of described 3rd blade is arranged
There is a curved portions.
Preferably, wherein, described fixture is all removeably positioned at the step of mounting groove by a cover plate
On, described fixture has a rake being easy to the 3rd blade press-in bottom the installation end of the 3rd blade.
Preferably, wherein, described fixture is set spring steel, and its spring rate is arranged to 500-700N, institute
The length stating fixture is arranged to 40-90mm, and the thickness of described fixture is arranged to 2-3.5mm, described 3rd blade
Highly being arranged to 3-5.5mm, described mounting groove is arranged to 5-9mmm in order to the groove depth accommodating one end of the 3rd blade, described
Cutting edge highlights the predetermined altitude of cutter hub outer surface and is arranged to 1.5mm-3mm.
Preferably, wherein, described fixture is set spring steel, and its spring rate is arranged to 630N, described solid
The length of locking member is arranged to 80mm, and the thickness of described fixture is arranged to 3mm, and the height of described 3rd blade is arranged to
4.5mm, described mounting groove is arranged to 4.5mmm in order to the groove depth accommodating one end of the 3rd blade, and described cutting edge highlights cutter hub
The predetermined altitude of outer surface is arranged to 2mm.
This utility model at least includes following beneficial effect: one, this utility model passes through in the front of cutter hub equipped with brill
Hole cutter head assembly, with complete holes drilled through operation, cutter hub middle part equipped with the chamfering cutter head assembly with elastic force of chamfering,
To complete the chamfering of the top and bottom to through hole, its effect is to complete holes drilled through and aperture upper and lower surface an operation
Chamfering；Achieve the chamfering operation that can complete boring and two-sided aperture with a cutter, come relative to traditional processing method
Say, which shorten man-hour, improve production efficiency, reduce use cost and labour cost simultaneously, have can implementation result good, can
Strong operability, production efficiency is high, the effect that cost is controlled.
Its two, this utility model is designed by the mounting groove of unique texture, it is achieved that when installing chamfering cutter head assembly, make
Must install chamfering cutter head and protrude from contraction flow region except the 3rd blade, it is respectively positioned in mounting groove in part, and provides a receiving the
Three blades and the cavity of fixture one end, the fixture of its chamfering cutter head assembly uses spring steel to make, to be supplied to the 3rd cutter
Sheet one elastic anchorage force, simultaneously facilitates its chamfering and takes in mounting groove when hole wall transmission pressure, it is achieved it has been threaded through
Becoming the operation of lower orifice chamfer, having can good, the workable effect of implementation result.
Its three, this utility model in order to ensure boring and chamfering operation stability and exploitativeness while have more
Good adaptability, by chamfering cutter head assembly can be configured in the way of the regulation of bore cutter rostral, and to chamfering cutter head assembly
Each parameters of operating part arranged so that it adapts to boring that hole depth is 10mm-60mm and chamfering operation, there is adaptability
Good, good stability, workable effect.
Part is embodied by further advantage of the present utility model, target and feature by description below, and part also will be passed through
Research of the present utility model and practice are understood by the person skilled in the art.
Accompanying drawing explanation
Fig. 1 is the vertical view knot in an embodiment of the present utility model for boring and the way-type drilling unit of aperture Double-side rounding
Structure schematic diagram；
Fig. 2 is that in another embodiment of the present utility model, the master of way-type drilling unit for boring and aperture Double-side rounding regards
Structural representation；
Fig. 3 is for boring and the left view of the way-type drilling unit of aperture Double-side rounding in another embodiment of the present utility model
Structural representation；
Fig. 4 is the A-A sectional structure schematic diagram in Fig. 3；
Fig. 5 is that the P in Fig. 3 is to structural representation；
Fig. 6 is for holing and chamfering in the way-type drilling unit of aperture Double-side rounding in another embodiment of the present utility model
The main TV structure schematic diagram of cutter head assembly；
Fig. 7 is for holing and chamfering in the way-type drilling unit of aperture Double-side rounding in another embodiment of the present utility model
The left view structural representation of cutter head assembly；
Fig. 8 is for holing and chamfering in the way-type drilling unit of aperture Double-side rounding in another embodiment of the present utility model
The plan structure schematic diagram of cutter head assembly.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
Should be appreciated that used herein such as " have ", " comprising " and " including " term do not allot one or many
Other element individual or the existence of a combination thereof or interpolation.
Fig. 1,4 show according to of the present utility model a kind of for boring and the realization of way-type drilling unit of aperture Double-side rounding
Form, including:
Cutter hub 1；
Dado head 2, it includes holing cutter head assembly 210 and having the least one set chamfering cutter head presetting elastic force
Assembly 220；
Cutter hub, it includes cutter hub 1 and cutter head 2, and described cutter head includes holing cutter head assembly 210 and having one presetting elasticity
The least one set chamfering cutter head assembly 220 of power, its on the cylindrical of cutter hub middle part equipped with the chamfering cutter head group with elastic force
Part, it is closed by the three-blade group of the fixture with the alloy material being welded on front side of it with elastic force and forms；
Wherein, described boring cutter head assembly is arranged on the front end of cutter hub, for drilling operation, outside the side of described cutter hub
Be provided with at least one step-like mounting groove 11 on sidewall, its for provide a space to accommodate chamfering cutter head assembly, and then
Make it can pass through hole in the course of processing and carry out the chamfering operation in lower aperture；
The cutting edge of each described chamfering cutter head assembly be all arranged in the way of prominent cutter hub outer surface one predetermined altitude with
In its mounting groove coordinated, to complete the chamfering operation of hole to be processed upper surface during boring, and
Each described cutting edge end is respectively provided with a predeterminable range bottom the mounting groove that distance is matched therewith, with to be processed
After the chamfering of hole upper surface has operated, it is pressed in mounting groove by the pressure of hole wall, and then completes boring action and to be processed
The chamfering operation of hole lower surface.This scheme is used to pass through in the front of cutter hub equipped with boring cutter head assembly, to complete holes drilled through
Operation, cutter hub middle part is equipped with the chamfering cutter head assembly with elastic force of chamfering, to complete the top and bottom to through hole
Chamfering, its effect is to complete holes drilled through and the chamfering of aperture upper and lower surface an operation；Achieve with a cutter
The chamfering operation in boring and two-sided aperture can be completed, for traditional processing method, which shorten man-hour, improve
Production efficiency, reduces use cost and labour cost simultaneously, have can implementation result good, workable, production efficiency is high, becomes
This controlled benefit.Further, this mode is the explanation of a kind of preferred embodiments, but is not limited thereto.Implementing this
During utility model, suitable replacement and replacing can be carried out according to user demand.
As shown in Figure 4, in another kind of example, described cutter hub is constituted by a curved transition sections 12 and then in cutter hub front end
One contraction flow region 13 with cutter hub axis as the center of circle, to be defined hole depth by described curved transition sections.Use this side
The degree of depth in hole is defined by case by curved transition sections, has workable effect, simultaneously relative to traditional two
For the biggest cutter hub, it has the benefit of higher product structure stability.Further, this mode be one relatively
The explanation of good example, but be not limited thereto.When implementing this utility model, suitable replacing can be carried out according to user demand
Change and change.
In another kind of example, described chamfering cutter head assembly sets with its removably with cutter hub front end distance of scalable
Put in mounting groove, and then adapt to different drilling depths.This scheme is used to lead to by arranging one on fixture and cover plate
Groove, and then by the different hole depth of regulation the 3rd blade and the distance of cutter hub front end adaptation, have can implementation result good, operable
Property strong, the benefit that adaptability is good.Further, this mode is the explanation of a kind of preferred embodiments, but is not limited thereto.?
When implementing this utility model, suitable replacement and replacing can be carried out according to user demand.
As Figure 1-4, in another kind of example, described cutter hub is internally provided with and respectively leads to boring cutter head assembly and fall
The cooling duct 14 of each installation place of angle cutter head assembly, cutter hub Center have internal cooling hole, cooling hole exits is the most right
Quasi-blade, reduces the infringement cutting the heat produced to cutter hub, and is also relatively set with spiral row on the lateral wall of described cutter hub
Bits groove 15, has helical flute on front side of its cutter hub, chip removal is unobstructed, it is to avoid iron filings damage cutter hub and blade.Use this scheme
Have can implementation result good, workable, the benefit of good stability.Further, a kind of preferred embodiments of this mode
Explanation, but be not limited thereto.When implementing this utility model, suitable replacement and more can be carried out according to user demand
Change.
As it is shown in figure 1, in another kind of example, described boring cutter head assembly includes first blade crossing cutter hub center
211, and it is arranged on the second blade 212 of cutter hub front end outer side.Use this scheme by filling two borings in cutter hub front
Blade, first blade crosses center, and second blade is arranged on outside according to pore diameter size, and each blade passes through screw
In 213 insert grooves being pressed on cutter hub, there is drilling effect good, the benefit that working (machining) efficiency is high.Further, this mode is only
It is the explanation of a kind of preferred embodiments, but is not limited thereto.When implementing this utility model, can carry out according to user demand
Suitable replacement and replacing.
As Figure 4-Figure 6, in another kind of example, each described chamfering cutter head assembly all includes a fixture 221, and it is used for
3rd blade is played a supportive role, and there is a spring rate to be pressed into mounting groove smoothly, respectively during chamfering
The front end of described fixture is provided with the 3rd blade 222 for chamfering, and each described 3rd blade is all set to tool
Having two cutting edges 223 being oppositely arranged, it is for operating upper and lower aperture, and described cutting edge is respectively provided with one and presets and incline
Rake angle, to complete the chamfering operation of upper and lower surface.Use this scheme have can implementation result good, workable, stable
The benefit that property is good.Further, this mode is the explanation of a kind of preferred embodiments, but is not limited thereto.Implementing this reality
When using novel, suitable replacement and replacing can be carried out according to user demand.
As shown in Figure 6, in another kind of example, each described 3rd blade all offers front chamfered groove 224, and the described 3rd
The outer rim of blade is provided with a curved portions 225.Chamfered groove before using this scheme to offer on the 3rd blade so that chamfering is lighter
Hurry up, fineness is good, and arranges circular arc on the cylindrical of the 3rd blade, is used for avoiding hole wall of swiping, affects Hole Wall Roughness, have
Machining accuracy is high, good stability, can the good benefit of implementation result.Further, this mode is saying of a kind of preferred embodiments
Bright, but be not limited thereto.When implementing this utility model, suitable replacement and replacing can be carried out according to user demand.
As shown in Figure 4, in another kind of example, described fixture is all arranged removably by a cover plate 226
On the step of mounting groove, described fixture has an inclination being easy to the 3rd blade press-in bottom the installation end of the 3rd blade
Portion 227.Use the fixture in this scheme when fixing three blades, a cover plate is installed outside it, with fixture one
Rise and be pressed on cutter hub in the mounting groove of correspondence by screw 228.The effect of cover plate is to avoid fixture to be produced when cutting
Raw bigger external force, and the situation of turning up caused occurs, and handle 3 is scabbled in the side being provided with national standard on rear side of cutter hub, general
Property strong, have can implementation result good, stability is strong, cuts benefit smoothly.Further, this mode is a kind of the most real
The explanation of example, but be not limited thereto.Implement this utility model time, can according to user demand carry out suitable replacement and
Change.
In another kind of example, described fixture is set spring steel, and its spring rate is arranged to 500-700N, institute
The length stating fixture is arranged to 40-90mm, and the thickness of described fixture is arranged to 2-3.5mm, described 3rd blade
Highly being arranged to 3-5.5mm, described mounting groove is arranged to 5-9mmm in order to the groove depth accommodating one end of the 3rd blade, described
Cutting edge highlights the predetermined altitude of cutter hub outer surface and is arranged to 1.5mm-3mm.Using this scheme is owing to fixture can edge
Predetermined direction is adjusted, to adapt to the process operation in different depth hole, if but the length of fixture is oversize, its major part quilt
Unsettled, its stability of the 3rd blade when chamfering operates just not, and then affects the machining accuracy of product, and in order to ensure the
Stability in the three blade courses of processing, the spring rate of fixture is required the highest by it, if but spring rate is too high, its
In the course of processing, cannot successfully be pressed in mounting groove, it is impossible to be normally carried out chamfering operation, consolidate utility model and lead to
Cross substantial amounts of experiment and performing creative labour, fixture, the 3rd blade, each parameter of the mounting groove degree of depth are configured, with
Make it adapt to complete in the range of the most on a large scale such as hole depth 10mm-60mm boring and chamfering operation, have and can implement effect
The best, workable, adaptable benefit.Further, this mode is the explanation of a kind of preferred embodiments, but not
It is confined to this.When implementing this utility model, suitable replacement and replacing can be carried out according to user demand.
In another kind of example, described fixture is set spring steel, and its spring rate is arranged to 630N, described solid
The length of locking member is arranged to 80mm, and the thickness of described fixture is arranged to 3mm, and the height of described 3rd blade is arranged to
4.5mm, described mounting groove is arranged to 4.5mmm in order to the groove depth accommodating one end of the 3rd blade, and described cutting edge highlights cutter hub
The predetermined altitude of outer surface is arranged to 2mm.Using this scheme is the optimal embodiment of one of which, to adapt to hole depth
For the boring of 35mm-50mm and chamfer machining operation, having can good, the workable benefit of implementation result.Further, this
The mode of kind is the explanation of a kind of preferred embodiments, but is not limited thereto.When implementing this utility model, can be according to user
Demand carries out suitable replacement and replacing.
Implementation:
Drilling tool positive direction feed, first, by the first blade and second blade of boring, leads to hole drill or pierces and treat
In the material of processing；Secondly, continuing positive direction feed, at this moment, the 3rd blade cutting edge near first blade one end will be to hole
Aperture, upside carries out chamfering operation, and along with the continuation feed of cutter, the 3rd blade completes the chamfering to upper-side hole, simultaneously because the
Three blades when entering into certain degree of depth, the design of its oblique cutting edge so that the 3rd blade be forced receive hole wall transmission
Pressure, and then be gradually compressed in hole during chamfering, additionally, due to being designed with circular arc on the 3rd blade outward flange i.e.
Curved portions, and the 3rd blade scratch hole wall time in hole, can be effectively prevented from, and the rotation along with cutter is followed in hole
Rotate；Again, continue feed with on the downside of by workpiece, so that the 3rd blade ejects, at this moment stop positive direction and feed, to negative side
To feed, on rear side of the first blade, cutting edge starts to carry out aperture, downside chamfering, and after downside chamfering is complete, is compressed to again
In hole, and then exit cutter, complete boring and the operation of upper and lower both sides orifice chamfer.
Number of devices described herein and treatment scale are used to simplify explanation of the present utility model.To this utility model
For boring and the application of way-type drilling unit of aperture Double-side rounding, modifications and variations be aobvious to one skilled in the art
And be clear to.
Although embodiment of the present utility model is disclosed as above, but it is not restricted in description and embodiment
Listed utilization.It can be applied to the various field being suitable for this practicality completely.For those skilled in the art, can hold
Change places and realize other amendment.Therefore, under the general concept limited without departing substantially from claim and equivalency range, this practicality is also
It is not limited to specific details and shown here as the legend with description.
Claims (10)
1. one kind is used for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that including:
Cutter hub；
Dado head, it includes holing cutter head assembly and having the least one set chamfering cutter head assembly presetting elastic force；
Wherein, described boring cutter head assembly is arranged on the front end of cutter hub, the lateral wall, side of described cutter hub is provided with step-like
At least one mounting groove；
The cutting edge of each described chamfering cutter head assembly is all arranged in the way of prominent cutter hub outer surface one predetermined altitude joins with it
In the mounting groove closed, to complete the chamfering operation of hole to be processed upper surface during boring, and
Each described cutting edge end is respectively provided with a predeterminable range bottom the mounting groove that distance is matched therewith, with on hole to be processed
After the chamfering on surface has operated, it is pressed in mounting groove by the pressure of hole wall, and then completes under boring action and hole to be processed
The chamfering operation on surface.
2. as claimed in claim 1 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that described cutter hub leads to
Cross a curved transition sections and then constitute a contraction flow region with cutter hub axis as the center of circle in cutter hub front end, with by described arc mistake
Hole depth is defined by portion of crossing.
3. as claimed in claim 1 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that described rose reamer
Head assembly is arranged in mounting groove with its removably with cutter hub front end distance of scalable, and then it is deep to adapt to different boring
Degree.
4. as claimed in claim 1 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that in described cutter hub
Portion is provided with the cooling duct of each installation place respectively leading to boring cutter head assembly and chamfering cutter head assembly, and outside described cutter hub
Helical flute also it is relatively set with on sidewall.
5. as claimed in claim 1 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that described bore cutter
Head assembly includes first blade crossing cutter hub center, and is arranged on the second blade of cutter hub front end outer side.
6. as claimed in claim 1 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that each described chamfering
Cutter head assembly all includes that a fixture, the front end of each described fixture are provided with the 3rd blade for chamfering, each institute
State the 3rd blade and be all set to that there are two cutting edges being oppositely arranged, and described cutting edge is respectively provided with a predetermined inclination angle
Degree, to complete the chamfering operation of upper and lower surface.
7. as claimed in claim 6 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that each described 3rd
All offer front chamfered groove on blade, and the outer rim of described 3rd blade is provided with a curved portions.
8. as claimed in claim 6 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that described fixture
All being removeably positioned on the step of mounting groove by a cover plate, described fixture is at the bottom of the installation end of the 3rd blade
Portion has a rake being easy to the 3rd blade press-in.
9. as claimed in claim 6 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that described fixture
Spring steel being set, and its spring rate is arranged to 500-700N, the length of described fixture is arranged to 40-90mm, institute
The thickness stating fixture is arranged to 2-3.5mm, and the height of described 3rd blade is arranged to 3-5.5mm, and described mounting groove is used
Being arranged to 5-9mm with the groove depth of one end of receiving the 3rd blade, described cutting edge highlights the predetermined altitude quilt of cutter hub outer surface
It is set to 1.5mm-3mm.
10. as claimed in claim 6 for boring and the way-type drilling unit of aperture Double-side rounding, it is characterised in that described fixing
Part is set spring steel, and its spring rate is arranged to 630N, and the length of described fixture is arranged to 80mm, described fixing
The thickness of part is arranged to 3mm, and the height of described 3rd blade is arranged to 4.5mm, and described mounting groove is in order to accommodate the 3rd cutter
The groove depth of one end of sheet is arranged to 7mmm, and described cutting edge highlights the predetermined altitude of cutter hub outer surface and is arranged to 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620647852.4U CN205733159U (en) | 2016-06-24 | 2016-06-24 | For boring and the way-type drilling unit of aperture Double-side rounding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620647852.4U CN205733159U (en) | 2016-06-24 | 2016-06-24 | For boring and the way-type drilling unit of aperture Double-side rounding |
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| CN205733159U true CN205733159U (en) | 2016-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921798A (en) * | 2016-06-24 | 2016-09-07 | 绵阳市绵工工具有限公司 | Combined drilling tool for drilling and chamfering of double surfaces of hole |
-
2016
- 2016-06-24 CN CN201620647852.4U patent/CN205733159U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921798A (en) * | 2016-06-24 | 2016-09-07 | 绵阳市绵工工具有限公司 | Combined drilling tool for drilling and chamfering of double surfaces of hole |
| CN105921798B (en) * | 2016-06-24 | 2018-11-23 | 绵阳市绵工工具有限公司 | For drilling and the way-type drilling unit of aperture Double-side rounding |
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