CN209078885U - A kind of drill bit for soft material processing - Google Patents
A kind of drill bit for soft material processing Download PDFInfo
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- CN209078885U CN209078885U CN201821413569.0U CN201821413569U CN209078885U CN 209078885 U CN209078885 U CN 209078885U CN 201821413569 U CN201821413569 U CN 201821413569U CN 209078885 U CN209078885 U CN 209078885U
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- seamed edge
- edge sword
- drill bit
- soft material
- material processing
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Abstract
The utility model is suitable for cutter structure field, provide a kind of drill bit for soft material processing, including work department and shank section, it is connected between the work department and the shank section by neck, the work department includes cutting tip and targeting part, the cutting tip has two main cutting edges and is set to the front end of the work department, the targeting part is provided with two helicla flutes from the cutting tip to the shank section direction, each helicla flute all has seamed edge sword, the seamed edge sword includes the first seamed edge sword for being provided with relief angle and the second seamed edge sword without relief angle, the front end of the first seamed edge sword is connected to the rear end of the corresponding main cutting edge, the rear end of the first seamed edge sword is connect with the front end of the second seamed edge sword.A kind of drill bit for soft material processing provided by the utility model, can effectively solve that machined surface finish is poor, and the problems such as burr occurs in hole wall, improves the reliability of cutter and improves processing efficiency.
Description
Technical field
The utility model belongs to cutter structure field more particularly to a kind of drill bit for soft material processing.
Background technique
Fluted drill is a kind of common hole machined tool, and standard fluted drill is by shank, neck and working portion three parts group
At.Working portion can be divided into cutting tip (drill bit part) and targeting part again.Drill bit part mainly plays cutting in drilling
Effect, targeting part drilling when from the standby part of guiding function and cutting tip.Referring to Fig. 5, to guarantee to be processed hole
There is higher dimensional accuracy, fluted drill targeting part does not open relief angle generally, and mostly uses the form of cylindrical edge 5, the final ruler in hole
Very little precision guarantees by 5 extrusion forming of cylindrical edge.
Recent years is greatly developed with 3C industry, and components matched with 3C occupy sizable part in the market
Volume, such as mobile phone and tablet computer outer package product, this kind of product uses the lower packaging material of hardness more, and packaging material is mostly skin
The compound compositions of multiple materials such as leather (ox-hide or PU), glass pricker and PC, quality and class require height, and product is mostly in foreign sales, valence
Lattice are very high.The examination that the fluted drill of discovery traditional structure is unable to reach part when doing drilling processing on such composite material is wanted
Ask, it is poor machined surface finish usually occur, it is jagged on hole wall phenomena such as, this is because caused by Material Processing quality is softer,
Illustrate that traditional fluted drill structure is unable to satisfy the processing of the composite material of existing softwood matter, it is necessary to the structure of traditional fluted drill
It optimizes.
Utility model content
The utility model aims to solve at least one of above-mentioned technical problem, provides a kind of brill for soft material processing
Head can effectively solve that machined surface finish is poor, and the problems such as burr occurs in hole wall, and the reliability and raising for improving cutter add
Work efficiency rate.
The technical solution of the utility model is: a kind of drill bit for soft material processing, including work department and shank section, institute
It states and is connected between work department and the shank section by neck, the work department includes cutting tip and targeting part, described to cut
Cutting part has two main cutting edges and is set to the front end of the work department, and the targeting part is from the cutting tip to described
Shank section direction is provided with two helicla flutes, and each helicla flute all has seamed edge sword, and the seamed edge sword includes being provided with relief angle
The first seamed edge sword and the second seamed edge sword without relief angle, the front end of the first seamed edge sword be connected to the corresponding main cutting edge
Rear end, the rear end of the first seamed edge sword are connect with the front end of the second seamed edge sword.
Optionally, the length of the first seamed edge sword is 0.2-0.5mm.
Optionally, the angle of the relief angle is 12 ° -25 °.
Optionally, the angle of the relief angle is 15 ° -20 °.
Optionally, the helical angle of each helicla flute is 25 ° -40 °.
Optionally, the helical angle of the first seamed edge sword is identical as the helical angle of the helicla flute.
Optionally, the diameter drop of the diameter of the first seamed edge sword and the second seamed edge sword is 0-0.02mm.
Optionally, the drill core of the targeting part is along wimble structure.
A kind of drill bit for soft material processing provided by the utility model, divides drill guide the front end of seamed edge sword
It is ground, forms the first seamed edge sword with relief angle, and length and relief angles progress reasonable disposition to the first seamed edge sword,
So that the first seamed edge sword is participated in cutting, to increase the cutting power of drill bit outer rim, can solve when drill bit processes soft material
The problem of existing surface roughness difference makes the finished surface of material have preferable finish, and since the second seamed edge sword is not opened
Relief angle, targeting part will not lose the function of guiding and scale cun, which raises the reliability of drill bit and improve processing efficiency.
The utility model haves no need to change the size and structure of original drill bit, makes improvements on the basis of original drill bit
It realizes, is easy to be updated improvement to existing drill bit, update cost, popularization and use valence with higher can be greatly saved
Value.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is a kind of structural schematic diagram of drill bit for soft material processing provided by the embodiment of the utility model；
Fig. 2 is the enlarged diagram in Fig. 1 at A；
Fig. 3 is a kind of left view of drill bit for soft material processing provided by the embodiment of the utility model；
Fig. 4 is the knot of targeting part drill core in a kind of drill bit for soft material processing provided by the embodiment of the utility model
Structure schematic diagram；
Fig. 5 is the structural schematic diagram of cylindrical edge in drill bit in the prior art.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
It should be noted that term " setting ", " connection " shall be understood in a broad sense, for example, it may be directly arranged, install,
Connection, can also be arranged indirectly by component placed in the middle, center configuration, be connected.
If in addition, there is the instructions such as " length ", " width ", "front", "rear", "left", "right" in the utility model embodiment
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or conventional placement status or use state, merely to
Convenient for describing the utility model and simplifying description, rather than structure, feature, device or the element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the utility model.It is practical new at this
In the description of type, unless otherwise indicated, the meaning of " plurality " is two or more.
Described each particular technique feature and each embodiment in a specific embodiment, in the case of no contradiction,
It can be combined in any appropriate way, such as can be with shape by different particular technique feature/embodiment combinations
At different embodiments, in order to avoid unnecessary repetition, each particular technique feature/embodiment is each in the utility model
No further explanation will be given for the possible combination of kind.
As shown in Figure 1 to Figure 3, a kind of drill bit for soft material processing provided by the embodiment of the utility model, can be used for
The lower material of hardness (such as leather, glass fibre and PC or by a variety of compound materials formed such as leather, glass fibre and PC
Material) processing, above-mentioned drill bit includes work department 1 and shank section 2, passes through neck 3 between the work department 1 and the shank section 2
Connection, neck 3 are pyramidal structure, and the lesser one end of 3 diameter of neck connect with the rear end of work department 1, neck 3 be relatively large in diameter one
End connect with the front end of shank section 2, and the work department 1 includes the cutting tip 11 of main shear action and can be with when drilling
The targeting part 12 of guiding function is played, before the cutting tip 11 has two main cutting edges 111 and is set to the work department 1
End, the targeting part 12 is provided with two helicla flutes 121 from the cutting tip 11 to 2 direction of shank section, each described
Helicla flute 121 all has seamed edge sword 4, and the seamed edge sword 4 includes 41 (i.e. the first seamed edge sword 41 of the first seamed edge sword for being provided with relief angle
There is no land) and the second seamed edge sword 42 (i.e. the second seamed edge sword 42 is traditional cylindrical edge structure, referring to Fig. 5) without relief angle, institute
The front end for stating the first seamed edge sword 41 is connected to the rear end of the corresponding main cutting edge 111, and the first seamed edge sword 41 is set to targeting part
12 front end, the rear end of the first seamed edge sword 41 are connect with the front end of the second seamed edge sword 42.When carrying out cutwork, cut
Part 11 is cut for axial cutting drilling, the first seamed edge sword 41 makes targeting part 12 increase brill with certain cutting power
Head outer rim cutting ability, make drill bit outer rim cutting it is sharper, radial cutting hole wall can be carried out, it is ensured that finished surface have compared with
Good finish, simultaneously as the second seamed edge sword 42 does not offer relief angle, so that the second seamed edge sword 42 can play guiding and scale
Very little function, to guarantee the dimensional accuracy for being processed hole.
Specifically, as depicted in figs. 1 and 2, the length L of the first seamed edge sword 41 can be 0.2-0.5mm, reasonable to control
The length L of first seamed edge sword 41 allows the first seamed edge sword 41 effectively to cut off the fiber of material internal, improves converted products
The finish on surface, while drill bit will not be made to lose the performance of guiding and scale cun again, influence the dimensional accuracy for processing hole.
Preferably, the length L of the first seamed edge sword 41 is 0.3mm.In practical application, the length L of the first seamed edge sword 41
It can be determined by the depth in hole to be processed.
Specifically, it as shown in figure 3, the angle of angle beta can be 12 ° -25 ° after described, is controlled by adjusting the angle of rear angle beta
The sharpness of first seamed edge sword 41.It, can be according to the material of workpiece come after the first seamed edge of reasonable disposition sword 41 in practical application
Angle beta, both may insure the sharpness of the first seamed edge sword 41, and effective solution processes the Burr Problem of hole wall.
Preferably, the angle of the rear angle beta can be 15 ° -20 °.In the utility model embodiment, after the first seamed edge sword 41
Angle is 20 °.
Specifically, as shown in Fig. 2, the pitch angle alpha of each helicla flute 121 can be 25 ° -40 °, the spiral of helicla flute 121
The size of angle α will affect the mass rate of emission of chip, and according to different rapidoprints, drill bit feed speed is also different, by reasonable
Configuration targeting part 12 pitch angle alpha, chip can be discharged in time, prevent chip to be blocked in processing hole, so as to cause disconnected
Sword.In the utility model embodiment, the helical angle of each helicla flute is 35 °.
Specifically, the helical angle with the pitch angle alpha of the helicla flute 121 of the first seamed edge sword 41 can be identical, the first rib
Side sword 41 is identical with the pitch angle alpha of the second seamed edge sword 42.
Specifically, the control of the diameter drop of the diameter of the first seamed edge sword 41 and the second seamed edge sword 42 is in 0-
Within 0.02mm (i.e. outside diameter of the outside diameter of the first seamed edge sword 41 equal to or less than the second seamed edge sword 42), in this way will not
Because there is Burr Problem in hole wall when excess stock is caused to remove for diameter drop.In the utility model embodiment, the first seamed edge sword 41
Diameter and the second seamed edge sword 42 diameter drop control within the scope of 0.005-0.013mm.
Specifically, as shown in figure 4, the drill core 122 of the targeting part 12 can be for along wimble structure (i.e. 12 front end of targeting part
The diameter of drill core 122 is less than the diameter of rear end drill core 122), increase the intensity of 12 posterior segment of targeting part, promotes the entirety of drill bit
Rigidity and bending resistance further prevent drill bit that disconnected sword occurs in the course of work.
A kind of drill bit for soft material processing provided by the utility model embodiment, to 12 seamed edges of drill guide point
The front end of sword 4 is ground, and the first seamed edge sword 41 with rear angle beta, and length L and rear angle beta to the first seamed edge sword 41 are formed
Angle carries out reasonable disposition, so that the first seamed edge sword 41 is participated in cutting, to increase the cutting power of drill bit outer rim, can solve brill
The problem for the surface roughness difference that head occurs when processing to soft material makes the finished surface of material have preferable finish, and
Since the second seamed edge sword 42 does not open relief angle, targeting part 12 will not lose the function of guiding and scale cun, and which raises drill bits
Reliability and improve processing efficiency.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modification, equivalent replacement or improvement etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of drill bit for soft material processing, including work department and shank section, between the work department and the shank section
Connected by neck, the work department includes cutting tip and targeting part, the cutting tip have two main cutting edges and
Set on the front end of the work department, the targeting part is provided with two spirals from the cutting tip to the shank section direction
Slot, each helicla flute all have seamed edge sword, which is characterized in that the seamed edge sword include be provided with relief angle the first seamed edge sword and
The second seamed edge sword without relief angle, the front end of the first seamed edge sword are connected to the rear end of the corresponding main cutting edge, and described first
The rear end of seamed edge sword is connect with the front end of the second seamed edge sword.
2. a kind of drill bit for soft material processing as described in claim 1, which is characterized in that the length of the first seamed edge sword
Degree is 0.2-0.5mm.
3. a kind of drill bit for soft material processing as described in claim 1, which is characterized in that the angle of the relief angle is
12°-25°。
4. a kind of drill bit for soft material processing as claimed in claim 3, which is characterized in that the angle of the relief angle is
15°-20°。
5. a kind of drill bit for soft material processing as described in claim 1, which is characterized in that the spiral of each helicla flute
Angle is 25 ° -40 °.
6. a kind of drill bit for soft material processing as claimed in claim 5, which is characterized in that the spiral shell of the first seamed edge sword
Swing angle is identical as the helical angle of the helicla flute.
7. a kind of drill bit for soft material processing as described in claim 1, which is characterized in that the first seamed edge sword it is straight
The diameter drop of diameter and the second seamed edge sword is 0-0.02mm.
8. a kind of drill bit for soft material processing as described in any one of claims 1 to 7, which is characterized in that described to lead
It is along wimble structure to the drill core of part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413569.0U CN209078885U (en) | 2018-08-30 | 2018-08-30 | A kind of drill bit for soft material processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413569.0U CN209078885U (en) | 2018-08-30 | 2018-08-30 | A kind of drill bit for soft material processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209078885U true CN209078885U (en) | 2019-07-09 |
Family
ID=67115515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821413569.0U Active CN209078885U (en) | 2018-08-30 | 2018-08-30 | A kind of drill bit for soft material processing |
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| Country | Link |
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| CN (1) | CN209078885U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042787A (en) * | 2021-03-24 | 2021-06-29 | 武汉理工大学 | Twist drill and manufacturing method thereof |
| CN113561384A (en) * | 2021-07-29 | 2021-10-29 | 杨雨晴 | Automatic processing device for chemical production plastic barrel |
-
2018
- 2018-08-30 CN CN201821413569.0U patent/CN209078885U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042787A (en) * | 2021-03-24 | 2021-06-29 | 武汉理工大学 | Twist drill and manufacturing method thereof |
| CN113561384A (en) * | 2021-07-29 | 2021-10-29 | 杨雨晴 | Automatic processing device for chemical production plastic barrel |
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