CN210908244U - Combined drill bit with ultrahigh hardness - Google Patents
Combined drill bit with ultrahigh hardness Download PDFInfo
- Publication number
- CN210908244U CN210908244U CN201920616955.8U CN201920616955U CN210908244U CN 210908244 U CN210908244 U CN 210908244U CN 201920616955 U CN201920616955 U CN 201920616955U CN 210908244 U CN210908244 U CN 210908244U
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- cutting portion
- chip
- drill bit
- chip groove
- groove
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Abstract
The utility model belongs to the technical field of cutting tool, concretely relates to combined drill bit with super high hardness, including drill bit, cutting portion, neck and stalk portion, neck one end is connected with the stalk portion, and the other end is connected the cutting portion, and cutting portion one end is connected the drill bit, is equipped with two sets of heliciform chip grooves on the cutting portion, and the chip groove bottom all is equipped with the strengthening rib, and the strengthening rib extends to the chip groove end along the chip groove front end, has seted up a plurality of cooling hole on the lateral wall of chip groove, and the cooling hole is evenly arranged and extends to the chip groove end along the chip groove front end, and the cooling hole runs through the cutting portion, and communicates with adjacent chip groove; the cutting portion surface is provided with an arc-shaped groove used for assisting chip removal, the arc-shaped groove extends to the tail end of the cutting portion along the cutting portion surface, the tail end of the cutting portion is provided with a chip blocking disc, and one side of the chip blocking groove is connected with the neck. The chip blocking disc can prevent chips from being discharged to a drill bit socket of the electric drilling machine through a chip removing groove during drilling, so that the use of the electric drilling machine is influenced.
Description
Technical Field
The utility model belongs to the technical field of cutting tool, concretely relates to combination formula drill bit with super high rigidity.
Background
The drill bit is a common tool in the mechanical industry and related industries and is mainly used for drilling cooling holes or blind holes in solid materials, so that the drill bit has the characteristics of high hardness, high wear resistance and the like. The commonly used drill bits mainly include twist drills, flat drills, center drills, deep hole drills and the like. Traditional twist drill head comprises cutting portion and stalk portion, be equipped with spiral helicine chip groove in the cutting portion, mainly used discharges the bits end in the hole, but when carrying out deep hole machining to the work piece, the sweeps that produces during drilling if only lean on the chip groove to carry out the chip removal, then the chip removal effect is relatively poor, need process the hole repeatedly, this will influence the efficiency of punching, and the radiating effect of drill bit is general, can cause the drill bit to be seriously overheated after driling many times, toughness descends, also influence the life of drill bit simultaneously, and when drilling, the drill bit socket department of electric drill is splashed easily to the exhaust bits end, thereby can lead to the jam of electric drill socket.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model discloses a combination formula drill bit with super high rigidity.
The specific technical scheme is as follows:
the utility model provides a combination formula drill bit with super high rigidity, includes drill point, cutting portion, neck and stalk portion, neck one end with the stalk portion is connected, and the other end is connected the cutting portion, cutting portion one end is connected the drill point, be equipped with two sets of heliciform chip grooves in the cutting portion, its characterized in that, chip groove bottom all is equipped with the strengthening rib, the strengthening rib extends to the chip groove end along the chip groove front end, a plurality of cooling hole has been seted up on the lateral wall of chip groove, cooling hole align to grid and extend to the chip groove end along the chip groove front end, and the cooling hole runs through the cutting portion to communicate with adjacent chip groove; the arc wall that is used for supplementary chip removal is offered on the cutting portion surface, the arc wall extends to the cutting portion end along the cutting portion surface, the cutting portion end is equipped with and keeps off the bits dish, it is discoid structure to keep off the bits dish, keep off bits groove one side with the neck is connected.
Further, the diameter of the handle part is 10-12 mm.
Furthermore, the diameter of the cooling hole is 0.5-1 mm.
Further, the cooling holes are all parallel to the shank.
Further, the cooling hole position is consistent with the cooling hole position in the adjacent chip groove.
Further, the drill point angle is 160 °.
The utility model has the advantages that:
(1) the utility model discloses in be equipped with the strengthening rib in the chip groove, and the strengthening rib extends to the chip groove end along the chip groove front end, can effectively promote the bulk strength of cutting portion, prevents that the drill bit from when drilling, wholly breaking occur, also helps the chip groove to carry out the chip removal simultaneously.
(2) The utility model discloses seted up a plurality of cooling hole on the lateral wall of chip groove, can dispel the heat in drilling, effectively improved the life of drill bit.
(3) The utility model discloses in offered the arc wall on the cutting portion surface, can be with the supplementary discharge hole of bits end in the hole when drilling.
(4) The utility model discloses be equipped with the fender charging tray in cutting part and neck junction, can prevent that the bits end from arranging the drill bit socket department to the electric drill through the chip groove when drilling to influence the use of electric drill.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of the present invention.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Description of the reference numerals
The utility model provides a combination formula drill bit with super high rigidity, includes drill point, cutting portion, neck and stalk portion, neck one end with the stalk portion is connected, and the other end is connected the cutting portion, cutting portion one end is connected the drill point, be equipped with two sets of heliciform chip grooves in the cutting portion, its characterized in that, chip groove bottom all is equipped with the strengthening rib, the strengthening rib extends to the chip groove end along the chip groove front end, a plurality of cooling hole has been seted up on the lateral wall of chip groove, cooling hole align to grid and extend to the chip groove end along the chip groove front end, and the cooling hole runs through the cutting portion to communicate with adjacent chip groove; the arc wall that is used for supplementary chip removal is offered on the cutting portion surface, the arc wall extends to the cutting portion end along the cutting portion surface, the cutting portion end is equipped with and keeps off the bits dish, it is discoid structure to keep off the bits dish, keep off bits groove one side with the neck is connected.
Further, the diameter of the handle part is 10-12 mm.
Furthermore, the diameter of the cooling hole is 0.5-1 mm.
Further, the cooling holes are all parallel to the shank.
Further, the cooling hole position is consistent with the cooling hole position in the adjacent chip groove.
Further, the drill point angle is 160 °.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a combination formula drill bit with super high rigidity, includes drill bit, cutting portion, neck and stalk portion, neck one end with the stalk portion is connected, and the other end is connected the cutting portion, cutting portion one end is connected the drill bit, be equipped with two sets of heliciform chip grooves on the cutting portion, its characterized in that, chip groove bottom all is equipped with the strengthening rib, the strengthening rib extends to the chip groove end along the chip groove front end, a plurality of cooling hole has been seted up on the lateral wall of chip groove, cooling hole align to grid and extend to the chip groove end along the chip groove front end, and the cooling hole runs through the cutting portion to communicate with adjacent chip groove; the arc wall that is used for supplementary chip removal is offered on the cutting portion surface, the arc wall extends to the cutting portion end along the cutting portion surface, the cutting portion end is equipped with and keeps off the bits dish, it is discoid structure to keep off the bits dish, keep off bits groove one side with the neck is connected.
2. The ultra-high hardness composite drill bit according to claim 1, wherein the shank diameter is 10 to 12 mm.
3. The ultra-high hardness composite drill according to claim 1, wherein the diameter of the cooling hole is 0.5 to 1 mm.
4. The ultra-high hardness composite drill bit according to claim 1, wherein said cooling holes are all parallel to said shank portion.
5. The ultra-high hardness composite drill according to claim 1, wherein the cooling hole position coincides with the cooling hole position in the adjacent flute.
6. The ultra-high hardness composite drill bit according to claim 1, wherein the tip angle is 160 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920616955.8U CN210908244U (en) | 2019-04-30 | 2019-04-30 | Combined drill bit with ultrahigh hardness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920616955.8U CN210908244U (en) | 2019-04-30 | 2019-04-30 | Combined drill bit with ultrahigh hardness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210908244U true CN210908244U (en) | 2020-07-03 |
Family
ID=71359356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920616955.8U Active CN210908244U (en) | 2019-04-30 | 2019-04-30 | Combined drill bit with ultrahigh hardness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210908244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618122A (en) * | 2021-08-31 | 2021-11-09 | 常州中钻刀具有限公司 | Long service life's carbide shaping sword |
-
2019
- 2019-04-30 CN CN201920616955.8U patent/CN210908244U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618122A (en) * | 2021-08-31 | 2021-11-09 | 常州中钻刀具有限公司 | Long service life's carbide shaping sword |
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