CN109482930A - A kind of micro- texture BTA deep hole drill and its structure preparation process - Google Patents
A kind of micro- texture BTA deep hole drill and its structure preparation process Download PDFInfo
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- CN109482930A CN109482930A CN201910012622.9A CN201910012622A CN109482930A CN 109482930 A CN109482930 A CN 109482930A CN 201910012622 A CN201910012622 A CN 201910012622A CN 109482930 A CN109482930 A CN 109482930A
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- texture
- micro
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- cutter
- deep hole
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- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 29
- 238000005553 drilling Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 230000001476 alcoholic effect Effects 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 244000137852 Petrea volubilis Species 0.000 claims description 2
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010330 laser marking Methods 0.000 claims description 2
- 239000003550 marker Substances 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 238000007514 turning Methods 0.000 claims description 2
- 238000011109 contamination Methods 0.000 claims 1
- 150000002576 ketones Chemical class 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 238000012876 topography Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002173 cutting fluid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 206010017389 Frotteurism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/20—Number of cutting edges
- B23B2251/202—Three cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/28—Arrangement of teeth
- B23B2251/282—Unequal spacing of cutting edges in the circumferential direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
A kind of micro- texture BTA deep hole drill and its structure preparation process, including cutter hub, the surface of cutter hub is provided with guide pad, cutter tooth is provided on cutter hub section, cutter tooth respectively is internal tooth from top to bottom, centre tooth and external tooth, it is staggered between each cutter tooth and there are certain amounts of lap, chip-removal hole is equipped among cutter hub, the cutter hub other end includes drill handle part, screw thread is provided with outside drill handle part, the rake face of the cutter tooth is provided with micro- texture, the present invention utilizes the innovation of micro- this surface topography of texture, to design a kind of novel micro- texture deep hole drill of high durability, with this by reducing friction, reduce tool wear to achieve the purpose that reduce cutting heat.
Description
Technical field
The present invention relates to bit technique field, in particular to a kind of micro- texture BTA deep hole drill and its structure preparation process.
Background technique
With the progress of science and technology, manufacturing industry is more next for the complexity, precision and surface roughness requirements of product
It is higher.The emergence of new material and difficult-to-machine material, also to metal cutting technology, more stringent requirements are proposed.Contemporary metal
The overall development trend of machining is high speed, efficient, low-carbon environment-friendly, and the Fast Wearing of cutter still restricts in process
Cutter life and stock-removing efficiency.When cutter carries out machining, the forward and backward knife face of cutter will be sent out with chip and workpiece surface
Raw strong friction, while cutting lay will be also deformed.Therefore, it is intended to obtain comparatively ideal cutting process, key is to reduce
Friction and cutting deformation, the i.e. resistance of reduction cutter during the cutting process.Meanwhile the machining industry of existing common iron is mesh
How the mainstream of preceding China's machining improves stock-removing efficiency, reduces cutting power, carries out low-carbon cutting, and need at present
It solves the problems, such as.Currently, in order to improve cutter utilization rate, inhibit tool wear, reduce cutting power, people from cutter material,
The all angles such as tool geometrical parameter, cutting fluid, cutting data, reduction friction all expand research.
Deep hole machining has a characteristic that because carrying out under closing or semi-closed state
(1) the cutting situation of cutter cannot be observed directly.By sound, it can only see chip, observation machine by rule of thumb at present
Bed load and pressure gauge touch the appearances phenomenons such as vibration to judge whether cutting process is normal；
(2) cutting heat is not easy to pass and dissipate.80% cutting heat is taken away by chip in general cutting process, and gun drilling only has
40%, cutter accounts for the large percentage of cutting heat, and diffusion late, easily overheats, and the cutting temperature of cutting edge is up to 600 DEG C, it is necessary to using strong
Make the effective type of cooling；
(3) chip is not easy to be discharged.Due to hole depth, the route that chip is passed through is long, is easy to happen obstruction, causes drill bit tipping.
Therefore, the length and shape of chip will be controlled, and carry out mandatory chip removal；
(4) rigidity of process system is poor.Because being limited by aperture size, the major diameter in hole is bigger, and drilling rod is thin and grows, rigidity
Difference is also easy to produce vibration, and drilling easily wanders off, thus it is particularly important to support guiding.
According to the above feature, deep hole machining difficulty is higher, labor content is bigger, and the requirement to cutter is higher.
Studies show that, the principal element of the difficult processing cutting speed of limitation is exactly cutter temperature caused by the severe friction of cutting region
Height is spent, the abrasion of cutter is exacerbated, reduces the processing performance of cutter.A large number of experiments studies have shown that micro- texture have it is good
The effect of good antifriction function and raising surface bearing capacity.In recent years, as micro- texture technology is in the continuous of tribological field
To develop, numerous studies personnel have found that it effectively improves the Frotteurism between rubbing secondary interface, surface abrasion is reduced,
Improve the working life of component of machine.
The application to new material was concentrated mainly on for the Wear Resistance of cutter material in the past, often ignores cutter
The surface topography of itself.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of micro- texture BTA deep hole drills
And its structure preparation process, using the innovation of micro- this surface topography of texture, to design a kind of novel micro- texture depth of high durability
Drill achievees the purpose that reduce cutting heat by reduction friction, reduction tool wear with this.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of micro- texture BTA deep hole drill, including cutter hub 1, the surface of cutter hub 1 are provided with guide pad 2, the cutter hub 1
Cutter tooth is provided on section, the cutter tooth respectively is internal tooth 3, centre tooth 4 and external tooth 5, each knife from top to bottom
Between cog is staggered and there are certain amount of lap, and the position distribution of cutter tooth makes radial force when drilling press to guide pad 2 always, makes it
It is close to machined hole wall to push ahead, to obtain preferable processing linear degree, is equipped with chip-removal hole 6, institute among the cutter hub 1
1 other end of cutter hub stated includes drill handle part 7, and screw thread is provided with outside drill handle part 7, and the rake face of the cutter tooth is provided with
Micro- texture 8.
6 aperture of chip-removal hole is d2=(0.5~0.55) d.
The chip-removal hole 6 is the small horn mouth conical surface of outer imperial palace, and the conical surface is 25 °, and major diameter is tangent with outer circle, internal diameter and row
It is tangent to consider hole circle to be worth doing.
1 outer diameter of cutter hub is d1=(0.9~0.92) d.
The guide pad 2 is that welded type is connect with the type of attachment of cutter hub 1.
The structure type of micro- texture 8 is groove-shaped micro- texture, 500 μm of 100 μ m of size Control position, micro- texture
Blade distance controlling away from cutter tooth is between 0.8mm-1.2mm.
Micro- texture is parallel with blade and is provided with four rows, 80 μm of every row's spacing, 200 μm of every column pitch.
A kind of preparation process of micro- texture BTA deep hole drill, includes the following steps；
Pre-treatment:
It successively uses the sand paper of 200,400,600,800,1000 mesh to polish cutter tooth rake face and flank, uses later
The abrasive paper for metallograph of W10 polishes, and removes surface contaminant, then polished drill bit is placed in supersonic wave cleaning machine and is successively soaked in
Each 10-15min in acetone and alcoholic solution takes out surface and oil contaminant and sufficiently dries；
Positioning clamps:
(1) rake face positions: because BTA drill bit is cylindrical structure, if it the use of vice positioning is only directly two-point locating, and
It is unstable, BTA drill bit is placed in V-type pincers and gently torsion screw fixes drill bit slightly, it next will using lever indicator
Cutter tooth rake face be adjusted to it is parallel with working face, because Overexertion lock screw will lead to the angle offset mixed up, thus it is last slightly
Micro- firmly to lock screw, rake face positioning finishes；
(2) flank positions: the drill bit that rake face is had good positioning is placed in large vice together with V-groove, so that rear knife
Up, gently turning round screw fixes V-groove in large vice mild or moderate.Next large vice side is put so that cutter tooth rake face with
Working face is vertical, at this time slight rotation V-groove, main cutting edge is adjusted to gauge it is vertical with working face, after adjustment
Screw is tightened, flank positioning finishes；
Laser processing:
V-groove or large vice that locating clip pulls tight are placed on working platform of laser marker machine, positioned using L-type slot to protect
Card cutter tooth is put just, and laser marking machine parameter is adjusted to: Q pulse width 4000ns, mark speed 1mm/s, output power 15W are swept
Frequency 400kHz is retouched, mark number 5~15 times, the micro- texture parameter processed is 80-120 μm of width, 15-40 μm of depth；
Post-processing:
The cutter tooth completed the process is used into 400 mesh, 800 mesh, the abrasive paper for metallograph sanding and polishing of W10 is then placed in ultrasound again
It is successively immersed in wave cleaning machine in acetone and alcoholic solution and respectively cleans 5min, the slag and surface after removing laser burns are dirty
Object is contaminated, and sufficiently dry.
Beneficial effects of the present invention:
The present invention using laser processing technology BTA depth drill blade rake face and the micro- texture of flank finished surface,
So that the contact area between cutter tooth and chip and workpiece surface reduces, frictional force is reduced, at the same time, cutting fluid will pass through
The micro- texture in surface penetrates into knife-bits interface, enhances cooling and lubricating effect with this, reduces cutting temperature, reduces tool wear, to have
Extend to effect the service life of BTA depth drill.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is side view of the invention.
Fig. 3 is the partial schematic diagram at Figure 1A of the present invention.
Fig. 4 is the partial schematic diagram at Fig. 2 B of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figures 1 and 2, micro- texture BTA drill bit is mainly made of three parts: cutter hub 1, guide pad 2, cutter tooth (its from up to
Down it is respectively internal tooth 3, centre tooth 4, external tooth 5), and be staggered between each cutter tooth and there are certain amount of lap, the row of being equipped among cutter hub 1
Consider hole 6 to be worth doing, 6 aperture of chip-removal hole is d2=(0.5~0.55) d, the discharge in order to guarantee chip is smooth, chip-removal hole 6 is designed as outer
Frustoconical bevel angle is set to 25 °, major diameter is tangent with outer circle, internal diameter and chip removal for the ease of processing by the small horn mouth conical surface of imperial palace
Hole circle is tangent.1 outer diameter of cutter hub is d1=(0.9~0.92) d, in order to guarantee the accurate positionin of deep hole machining and convenient for fast quick-mounting
It unloads, the connection of drill handle part 7 uses four-head rectangle square thread structure, and designs between centers location structure, reaches drill handle part 7 with this
With the connection request of drilling rod.The size for connection parameter of drillstock 7 and drilling rod matches.Wherein cutter tooth 3,4,5 and guide pad 2 and cutter hub
1 type of attachment is welded type connection.
It is with the micro- texture 8 in surface, the structure type of micro- texture 8 is laser machined out in the rake face of cutter tooth as shown in figures 3 and 4
Groove-shaped micro- texture, 500 μm of 100 μ m of size Control position for guarantee cutter tooth intensity and the micro- texture in surface it is effective, micro- texture away from
Blade distance controlling is between 0.8mm-1.2mm, and to avoid stress from concentrating, direction is parallel with blade to process four rows, between every row
Away from 80 μm, 200 μm of every column pitch.It should be noted that the cutting force of cutter tooth is maximum because the machining condition of centre tooth 4 is worst, squeeze
The most serious, volume bits, chip breaking difficulty are pressed, therefore distance of micro- texture away from cutting edge need to be increased suitably to enhance cutting edge strength, are reinforced
The stability of cutting mitigates the cutting load of centre tooth.
Claims (9)
1. a kind of micro- texture BTA deep hole drill, which is characterized in that including cutter hub (1), the surface of cutter hub (1) is provided with guide pad
(2), be provided with cutter tooth on the cutter hub (1) end face, with have guide pad on one side to be upper, cutter tooth respectively is from top to bottom
Internal tooth (3), centre tooth (4) and external tooth (5), each cutter tooth is simultaneously non-integral, mutually staggers, and there are certain amount of lap, the positions of cutter tooth
Distribution is set so that radial force presses to guide pad (2) always when drilling, is equipped with chip-removal hole (6) among the cutter hub (1), it is described
Cutter hub (1) other end includes drill handle part (7), is provided with screw thread outside drill handle part (7), the rake face of each cutter tooth is provided with micro-
Texture (8).
2. a kind of micro- texture BTA deep hole drill according to claim 1, which is characterized in that described chip-removal hole (6) hole
Diameter is d2=(0.5~0.55) d.
3. a kind of micro- texture BTA deep hole drill according to claim 1, which is characterized in that the chip-removal hole (6) is outer
The small horn mouth conical surface of imperial palace, the conical surface are 25 °, and major diameter is tangent with outer circle, and internal diameter and chip-removal hole circle are tangent.
4. a kind of micro- texture BTA deep hole drill according to claim 1, which is characterized in that described cutter hub (1) outer diameter is
d1=(0.9~0.92) d.
5. a kind of micro- texture BTA deep hole drill according to claim 1, which is characterized in that the guide pad (2) and knife
The type of attachment of body (1) is welded type connection.
6. a kind of micro- texture BTA deep hole drill according to claim 1, which is characterized in that the knot of micro- texture (8)
Configuration formula is groove-shaped micro- texture, and 500 μm of 100 μ m of size Control position, micro- texture exists away from the blade distance controlling of cutter tooth
Between 0.8mm-1.2mm.
7. a kind of micro- texture BTA deep hole drill according to claim 1, which is characterized in that micro- texture and blade
In parallel and it is provided with four rows, 80 μm of every row's spacing, 200 μm of every column pitch.
8. a kind of micro- texture BTA deep hole drill according to claim 1, which is characterized in that described cutter hub (1) shape is
Cylindrical body, front end are the conical surface, are in 15 ° with end plane angle.
9. a kind of preparation process of micro- texture BTA deep hole drill, which is characterized in that include the following steps；
Pre-treatment:
It successively uses the sand paper of 200,400,600,800,1000 mesh to polish cutter tooth rake face and flank, uses W10 later
Abrasive paper for metallograph polishing, remove surface contaminant, then polished drill bit be placed in supersonic wave cleaning machine and is successively soaked in third
Each 10-15min in ketone and alcoholic solution takes out surface and oil contaminant and sufficiently dries；
Positioning clamps:
(1) rake face positions: BTA drill bit being placed in V-type pincers and gently torsion screw fixes drill bit slightly, next uses thick stick
Bar dial gauge cutter tooth rake face is adjusted to it is parallel with working face, because to will lead to the angle mixed up inclined for Overexertion lock screw
It moves, therefore last latching screw of slightly exerting oneself, rake face positioning finish；
(2) flank positions: the drill bit that rake face is had good positioning is placed in large vice together with V-groove, so that flank court
On, light screw of turning round fixes V-groove in large vice mild or moderate.Next large vice side is put, so that cutter tooth rake face and work
Plane is vertical, at this time slight rotation V-groove, is adjusted to main cutting edge with gauge vertical with working face, tightens after adjustment
Screw, flank positioning finish；
Laser processing:
V-groove or large vice that locating clip pulls tight are placed on working platform of laser marker machine, positioned using L-type slot to guarantee knife
Tooth is put just, and laser marking machine parameter is adjusted to: Q pulse width 4000ns, mark speed 1mm/s, output power 15W, scanning frequency
Rate 400kHz, mark number 5~15 times, the micro- texture parameter processed is 80-120 μm of width, 15-40 μm of depth；
Post-processing:
The cutter tooth completed the process is used into 400 mesh, 800 mesh, it is clear to be then placed in ultrasonic wave again for the abrasive paper for metallograph sanding and polishing of W10
It is successively immersed in washing machine in acetone and alcoholic solution and respectively cleans 5min, slag and surface contamination after removing laser burns
Object, and it is sufficiently dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012622.9A CN109482930A (en) | 2019-01-07 | 2019-01-07 | A kind of micro- texture BTA deep hole drill and its structure preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012622.9A CN109482930A (en) | 2019-01-07 | 2019-01-07 | A kind of micro- texture BTA deep hole drill and its structure preparation process |
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| Publication Number | Publication Date |
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| CN109482930A true CN109482930A (en) | 2019-03-19 |
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ID=65714139
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| CN201910012622.9A Pending CN109482930A (en) | 2019-01-07 | 2019-01-07 | A kind of micro- texture BTA deep hole drill and its structure preparation process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967804A (en) * | 2019-03-22 | 2019-07-05 | 长春理工大学 | A kind of derivative cutting inhibition processing method of micro turning cutter rake surface texture |
| CN110509004A (en) * | 2019-08-21 | 2019-11-29 | 中交天和机械设备制造有限公司 | A kind of processing method of the boring cutter of the embedding rock of engineering |
| CN116967788A (en) * | 2023-09-22 | 2023-10-31 | 北京理工大学 | Boring and rolling composite BTA deep hole machining tool and manufacturing method |
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| CN102189287A (en) * | 2011-04-11 | 2011-09-21 | 山东大学 | Micro-texture self-lubricating drilling bit and manufacturing method thereof |
| CN106925818A (en) * | 2015-12-30 | 2017-07-07 | 成都工具研究所有限公司 | Sword side set bta deep hole drilling of minor diameter three and preparation method thereof |
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| CN108356329A (en) * | 2018-02-07 | 2018-08-03 | 成都工具研究所有限公司 | A kind of side set BTA drill bits and its manufacturing method based on hot investment casting structure of the cutter body |
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| CN209363668U (en) * | 2019-01-07 | 2019-09-10 | 西安石油大学 | A kind of micro- texture BTA deep hole drill |
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2019
- 2019-01-07 CN CN201910012622.9A patent/CN109482930A/en active Pending
Patent Citations (6)
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| CN102189287A (en) * | 2011-04-11 | 2011-09-21 | 山东大学 | Micro-texture self-lubricating drilling bit and manufacturing method thereof |
| CN106925818A (en) * | 2015-12-30 | 2017-07-07 | 成都工具研究所有限公司 | Sword side set bta deep hole drilling of minor diameter three and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967804A (en) * | 2019-03-22 | 2019-07-05 | 长春理工大学 | A kind of derivative cutting inhibition processing method of micro turning cutter rake surface texture |
| CN110509004A (en) * | 2019-08-21 | 2019-11-29 | 中交天和机械设备制造有限公司 | A kind of processing method of the boring cutter of the embedding rock of engineering |
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| CN116967788B (en) * | 2023-09-22 | 2024-01-05 | 北京理工大学 | Boring and rolling composite BTA deep hole machining tool and manufacturing method |
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