CN204686125U - Twolip fluted drill - Google Patents
Twolip fluted drill Download PDFInfo
- Publication number
- CN204686125U CN204686125U CN201520191795.9U CN201520191795U CN204686125U CN 204686125 U CN204686125 U CN 204686125U CN 201520191795 U CN201520191795 U CN 201520191795U CN 204686125 U CN204686125 U CN 204686125U
- Authority
- CN
- China
- Prior art keywords
- twolip
- torsional part
- fluted drill
- bit head
- sharp projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model discloses twolip fluted drill, comprise the polished rod rotating part connected successively from top to bottom, middle fried dough twist portion and bit head, bit head comprises cutting edge not at conplane upper and lower torsional part, upper torsional part and lower torsional part are respectively arranged with curve tab portion and sharp projection portion, and upper torsional part and lower torsional part cross at top plan place, thus play the effect strengthening drill bit; Part to be processed is cut in sharp projection portion, and curve tab portion cuts and part to be processed of polishing.The bit head of fluted drill of the present utility model includes cutting edge not torsional part and lower torsional part on conplane, and it is provided with respectively sharp projection portion and curve tab portion, thus realize just holing, the roughness of limit polishing internal surface of hole, avoid the process of the non-metal workpiece such as plastics, fiber boring secondary operations, shorten the process-cycle, and saved manufacturing cost, improve production efficiency.
Description
Technical field
The utility model relates to bit technique field, particularly relates to twolip fluted drill.
Background technology
Current use drill bit is in the nonmetal boring procedure such as plastics, fiber, and it is consistent that drill bit and the metal material of use use.In boring procedure, usually can leave remaining scrap in the hole of plastics or fiber, need to carry out the roughness in secondary operations and grinding process guarantee hole.
For the part that batch is less, secondary operations and polishing, the time of processing and duration also can be waited for reluctantly, but for the part produced in enormous quantities and process, need buying after-treatment equipment, carry out polishing and processing, owing to being process nonmetallic materials, once attempting to be adopted as the mode that drill bit heats and realize this goal, but the equipment more complicated of heating, and need preheating, also wastes power resource at every turn.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides twolip fluted drill, its object is to simplify the nonmetallic hole structure such as plastics, fiber, and avoids its part requiring inner bore surface roughness to carry out secondary operations and polishing, save production cost, enhance productivity.
The technical scheme that the utility model adopts is: twolip fluted drill, comprise the polished rod rotating part connected successively from top to bottom, middle fried dough twist portion and bit head, bit head comprises cutting edge not at conplane upper and lower torsional part, upper torsional part and lower torsional part are respectively arranged with curve tab portion and sharp projection portion, and upper torsional part and lower torsional part cross at top plan place, thus play the effect strengthening drill bit; Part to be processed is cut in sharp projection portion, and curve tab portion cuts and part to be processed of polishing.The bit head of fluted drill of the present utility model includes cutting edge not torsional part and lower torsional part on conplane, and it is provided with respectively sharp projection portion and curve tab portion, thus realize just holing, the roughness of limit polishing internal surface of hole, avoid the process of the non-metal workpiece such as plastics, fiber boring secondary operations, shorten the process-cycle, and saved manufacturing cost, improve production efficiency.
Preferably, the roughness of the outer surface in sharp projection portion is 0.4-0.8, thus ensures that drill bit has good surface roughness, to strengthen himself pressure, reaches sharper cutting effect.
Preferably, the rising height of the relative bit head in sharp projection portion is not less than 0.8mm, and the inclination angle of sharp projection portion and bit head connecting portion is for spending to spending.Thus reach good cutting effect.
Preferably, the protrusion surface in curve tab portion is cambered surface, and the surface roughness of protrusion surface is 0.4-0.8.Protrusion surface projection is 0.3mm relative to the height of bit head upper surface.Surface blending portion is also provided with between middle fried dough twist portion and bit head.Thus be drill bit operationally, the inner surface of can polish easily hole or groove, improves its inside surface roughness, to save operation.
Preferably, middle fried dough twist portion and junction, surface blending portion are also provided with chamfering, thus the stress reducing the intermediate location of drill bit is concentrated, to improve its intensity.Chamfering is 30 degree to 45 degree, has good intensity.
Preferably, the angle that upper torsional part and lower torsional part cross at top plan place is 116 degree to 120 degree, ensure that torsional part and lower torsional part have good strength and stiffness, thus ensures to study intensively to have longer service life.
Compared with prior art, the beneficial effects of the utility model are: the bit head of fluted drill of the present utility model includes cutting edge not torsional part and lower torsional part on conplane, and it is provided with respectively sharp projection portion and curve tab portion, thus realize just holing, the roughness of limit polishing internal surface of hole, avoids the process of the non-metal workpiece such as plastics, fiber boring secondary operations, shortens the process-cycle, and saved manufacturing cost, improve production efficiency.
The utility model simplifies the nonmetallic hole structure such as plastics, fiber, and avoids its part requiring inner bore surface roughness and carry out secondary operations and polishing, has saved production cost, has improve production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of twolip fluted drill;
Fig. 2 is the sectional view of the A-A of Fig. 1;
Fig. 3 is the sectional view of the B-B of Fig. 1.
Detailed description of the invention
In order to deepen, to understanding of the present utility model, to further illustrate the utility model below in conjunction with drawings and Examples, this embodiment, only for explaining the utility model, not forming protection domain of the present utility model and limiting.
As shown in Figure 1, twolip fluted drill, comprise the polished rod rotating part 1 connected successively from top to bottom, middle fried dough twist portion 2 and bit head 4, bit head 4 comprises cutting edge not at conplane upper and lower torsional part 41,42, upper torsional part 41 and lower torsional part 42 are respectively arranged with curve tab portion 8 and sharp projection portion 7, and upper torsional part 41 and lower torsional part 42 cross at top plan 5 place, thus play the effect strengthening drill bit; Part to be processed is cut in sharp projection portion 7, and curve tab portion 8 cuts and part to be processed of polishing.The bit head 4 of fluted drill of the present utility model includes cutting edge not torsional part 41 and lower torsional part 42 on conplane, and it is provided with respectively sharp projection portion 7 and curve tab portion 8, thus realize boring, the roughness of limit polishing internal surface of hole, avoid the process of the non-metal workpiece such as plastics, fiber boring secondary operations, shorten the process-cycle, and saved manufacturing cost, improve production efficiency.
As shown in Figure 2, the roughness of the outer surface in sharp projection portion 7 is 0.4-0.8, thus ensures that drill bit has good surface roughness, to strengthen himself pressure, reaches sharper cutting effect.The rising height of the relative bit head 4 in sharp projection portion 7 is not less than 0.8mm, and sharp projection portion 7 is 12 degree to 16 degree with the inclination angle of bit head 4 connecting portion.Thus reach good cutting effect.
As shown in Figure 3, the protrusion surface 81 in curve tab portion 8 is cambered surface, and the surface roughness of protrusion surface 81 is 0.4-0.8.Protrusion surface 81 projection is 0.3mm relative to the height of bit head upper surface.Surface blending portion 3 is also provided with between middle fried dough twist portion 2 and bit head 4.Thus be drill bit operationally, the inner surface of can polish easily hole or groove, improves its inside surface roughness, to save operation.
In addition, see Fig. 1, middle fried dough twist portion 2 is also provided with chamfering 9 with junction, surface blending portion 3, thus the stress reducing the intermediate location of drill bit is concentrated, to improve its intensity.Chamfering 9 is 30 degree to 45 degree, has good intensity.Upper torsional part 41 and lower torsional part 42 are 116 degree 120 degree at the angle that top plan 5 place crosses, and ensure that torsional part and lower torsional part have good strength and stiffness, thus ensure to study intensively to have longer service life.In addition, in order to ensure that twolip fluted drill operationally has good service behaviour, the surface roughness of its polished rod rotating part 1 is generally 0.8, and must not be less than 1.6.
The utility model simplifies the nonmetallic hole structure such as plastics, fiber, and avoids its part requiring inner bore surface roughness and carry out secondary operations and polishing, has saved production cost, has improve production efficiency.
What embodiment of the present utility model was announced is preferred embodiment; but be not limited thereto; those of ordinary skill in the art; very easily according to above-described embodiment; understand spirit of the present utility model; and make different amplifications and change, but only otherwise depart from spirit of the present utility model, all in protection domain of the present utility model.
Claims (10)
1. twolip fluted drill, comprise the polished rod rotating part (1) connected successively from top to bottom, middle fried dough twist portion (2) and bit head (4), it is characterized in that: described bit head (4) comprises cutting edge not on conplane, lower torsional part (41, 42), described upper torsional part (41) and lower torsional part (42) are respectively arranged with curve tab portion (8) and sharp projection portion (7), and described upper torsional part (41) and lower torsional part (42) are intersected in summit (6) place at top plan (5), described sharp projection portion (7) cuts part to be processed, described curve tab portion (8) is cut and part to be processed of polishing.
2. twolip fluted drill according to claim 1, is characterized in that: the roughness of the outer surface of described sharp projection portion (7) is 0.4-0.8.
3. twolip fluted drill according to claim 2, is characterized in that: the rising height of the relative bit head (4) of described sharp projection portion (7) is not less than 0.8mm.
4. twolip fluted drill according to claim 3, is characterized in that: described sharp projection portion (7) is 12 degree to 16 degree with the inclination angle of bit head (4) connecting portion.
5. twolip fluted drill according to claim 1, is characterized in that: the protrusion surface (81) of described curve tab portion (8) is cambered surface, and the surface roughness of described protrusion surface (81) is 0.4-0.8.
6. twolip fluted drill according to claim 1, is characterized in that: described protrusion surface (81) projection is 0.3mm relative to the height of bit head upper surface.
7. twolip fluted drill according to claim 1, is characterized in that: be also provided with surface blending portion (3) between described middle fried dough twist portion (2) and bit head (4).
8. twolip fluted drill according to claim 2, is characterized in that: described middle fried dough twist portion (2) and surface blending portion (3) junction are also provided with chamfering (9).
9. twolip fluted drill according to claim 8, is characterized in that: described chamfering (9) is 30 degree to 45 degree.
10. twolip fluted drill according to claim 1, is characterized in that: described upper torsional part (41) and lower torsional part (42) are 116 degree to 120 degree at the angle that top plan (5) place crosses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191795.9U CN204686125U (en) | 2015-04-01 | 2015-04-01 | Twolip fluted drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191795.9U CN204686125U (en) | 2015-04-01 | 2015-04-01 | Twolip fluted drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204686125U true CN204686125U (en) | 2015-10-07 |
Family
ID=54226468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520191795.9U Expired - Fee Related CN204686125U (en) | 2015-04-01 | 2015-04-01 | Twolip fluted drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204686125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108772587A (en) * | 2018-06-05 | 2018-11-09 | 邢建 | A kind of carbide drill |
| CN114932595A (en) * | 2022-06-09 | 2022-08-23 | 南阳鼎泰高科有限公司 | Method for improving hole thickness and hole edge whitening of PCB (printed Circuit Board) drilling hole |
-
2015
- 2015-04-01 CN CN201520191795.9U patent/CN204686125U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108772587A (en) * | 2018-06-05 | 2018-11-09 | 邢建 | A kind of carbide drill |
| CN114932595A (en) * | 2022-06-09 | 2022-08-23 | 南阳鼎泰高科有限公司 | Method for improving hole thickness and hole edge whitening of PCB (printed Circuit Board) drilling hole |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204686125U (en) | Twolip fluted drill | |
| CN206854567U (en) | Steel ball forges mould | |
| CN202894448U (en) | Annular groove and chamfer combined milling cutter | |
| CN106513807B (en) | A kind of ball end mill | |
| CN104305851A (en) | Household juicer screw and manufacturing method thereof | |
| CN102554323A (en) | Straight fluted drill | |
| CN202498226U (en) | Chamfering cutter | |
| CN204245882U (en) | A kind of Domestic fruit extractor screw rod | |
| CN206882940U (en) | Internal thread machining cutter | |
| CN203114871U (en) | Drive shaft | |
| CN206296351U (en) | A kind of bilateral shaving die | |
| CN208019438U (en) | A kind of single side tank car paring blade | |
| CN203114869U (en) | Drive shaft | |
| CN201250850Y (en) | Cold-extrusion universal joint crossing shaft | |
| CN205715326U (en) | A kind of truck drive shaft out star wheel blank forged piece | |
| CN106475620B (en) | Detachable rotary cutter | |
| CN204784226U (en) | Axle form spare part mount pad | |
| CN203945121U (en) | A kind of for processing the composite molding brill of the reverse chamfering of aluminium class part | |
| CN205135724U (en) | Rivet structure for spacer sleeve on cross -section -variable nozzle ring of turbocharger | |
| CN204800025U (en) | Step cutter | |
| CN203944900U (en) | A kind of for processing the spiral forming milling cutter of pinion cutter forming tank | |
| CN202461617U (en) | Polycrystalline diamond center drill | |
| CN203991936U (en) | A kind of punching die | |
| CN203679313U (en) | Welding edge back boring tool | |
| CN210848162U (en) | Split type combination upset cake mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160401 |