CN206455210U - A kind of end face cross hard alloy cutting drill head with symmetric windows - Google Patents
A kind of end face cross hard alloy cutting drill head with symmetric windows Download PDFInfo
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- CN206455210U CN206455210U CN201720134380.7U CN201720134380U CN206455210U CN 206455210 U CN206455210 U CN 206455210U CN 201720134380 U CN201720134380 U CN 201720134380U CN 206455210 U CN206455210 U CN 206455210U
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Abstract
The utility model describes a kind of end face cross hard alloy cutting drill head with symmetric windows, including drill body, the front end face of the drill body provided with radially, cross two orthogonal cross grooves at center, it is characterized in that：It is symmetrical arranged in the cross groove on two groups of cutting edges, each group cutting edge and is equipped with symmetrical breach, the distance of the breach on adjacent cutting sword to center；The drill bit can realize segmentation cutting in bit cutting, so that the length of drill bit cutting portion cutting is reduced, the resistance that cutting edge is subject to when effectively reducing cutting, while can also prevent from being likely to occur the position skew problems in hole in drilling.
Description
Technical field
The utility model is related to ground anchorage field, particularly a kind of end face cross hard alloy with symmetric windows
Cutting drill head.
Background technology
End face cross hard alloy cutting drill head in self-drilling type anchor system, be whole anchor system critical piece it
One, the geological conditions typically used is the drilling and anchoring of softer sedimentary rock class such as marl, mudstone, siltstone etc.；Drill bit
Function be that hole and the slip casting of anchor system are got out in the position of supporting, and drill bit position and whole anchoring after slip casting
System turns into the fulcrum of active support.
The structural formula that the end face cross carbide drill of self-drilling type anchor system is general is：Circle in the end of drill bit
In shape plane, cross center line along radial direction and output two orthogonal cross grooves, be bumped into or weld hard conjunction in groove
The golden blade as drill bit, for cutting ground；Ash pit is provided between the adjacent blade of cross cutting edge, for arranging
Go out the ground detrital grain cut；And connect bit central with setting through hole in ash pit and hollow at end face center
Inside drilling rod, grouting pump wash boring and slip casting can be connected simultaneously in drilling.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of end face cross hard with symmetric windows and closed
Golden cutting drill head, can realize segmentation cutting in bit cutting, so that the length of drill bit cutting portion cutting is reduced, effectively reduction cutting
When the resistance that is subject to of cutting edge, while can also prevent from being likely to occur the position skew problems in hole in drilling.
In order to realize the purpose for solving above-mentioned technical problem, the utility model employs following technical scheme：
A kind of end face cross hard alloy cutting drill head with symmetric windows, including drill body, the drill body
Front end face provided with radially, cross center two orthogonal cross grooves, it is characterized in that：The cross groove
Inside it is symmetrical arranged on two groups of cutting edges, each group cutting edge and is equipped with symmetrical breach, the breach on adjacent cutting sword is into
The distance of the heart.
Specifically：The gap width is more than or equal to 5mm.
Specifically：The indentations section is to face directly or arcwall face.
Specifically：The cutting edge is hard alloy material.
Specifically：Symmetrical a group or more of breach are equipped with each group cutting edge.
These technical schemes, including improved technical scheme and further improved technical scheme can also be combined with each other
Or combine, so as to reach superior technique effect.
By using above-mentioned technical proposal, the utility model has following beneficial effect：
A kind of end face cross hard alloy cutting drill head with symmetric windows of the present utility model, in bit cutting,
Due to being provided with breach on cutting edge so that drill bit can realize segmentation cutting, so as to reduce the length of bit cutting blade cutting
The resistance that cutting edge is subject to during degree, effectively reduction bit cutting, is easy to drill bit to be easier to realize boring procedure.
Further, since being provided with breach on the cutting edge of drill bit, in drilling, corresponding raised circle can be left in indentation, there
Segmental arc intervallum, raised arc section intervallum breach occlusion corresponding to drill bit, plays orientation, prevents drill end occurring
Occur that when uneven hardness or hard spot particle the deflection of boring direction may be caused in the sedimentary rock of face, so as to keep drilling axis
It is straight, prevent bore position deflection.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
In figure：1- drill bodies, 2- cutting edges, 3- breach.
Embodiment
This patent is further explained below in conjunction with the accompanying drawings.But the protection domain of this patent is not limited to specific implementation
Mode.
Embodiment 1
As illustrated, a kind of end face cross hard alloy cutting drill head with symmetric windows of this patent, including drill bit
Body 1, the front end face of the drill body 1 provided with radially, cross two orthogonal cross grooves at center, it is described
It is symmetrical arranged in cross groove and one group of symmetrical breach 3 is equipped with two groups of cutting edges 2, each group cutting edge 2, it is adjacent to cut
The breach 3 on sword 2 is cut to the distance at center.
Wherein, the width of breach 3 is 5mm, and the section of breach 3 is faces or arcwall face directly, and cutting edge 2 is hard alloy material.
Working angles when ground drilling is carried out using above-mentioned drill bit are as follows：
, then can be during bit cutting ground because cutting edge 2 is provided with breach 3 when rig drives bit
One section of raised arc section intervallum cutting is left at breach 3 less than thus the whole section of length of cut disconnection on drill bit radius
Separation is cut, the resistance that cutting edge 2 is subject to when effectively reducing bit cutting, is easy to drill bit to be easier to realize boring procedure.
Moreover, when bit cuts ground, because raised arc section intervallum breach 3 corresponding to drill bit is engaged, rising
To orientation, so as to keep the straight of drilling axis, bore position deflection is prevented.
Further, since the distance of breach 3 on adjacent cutting sword 2 to center, latter after drill bit, which rotates 1/4, to be enclosed
Adjacent cutting sword 2, which can be cut, removes the raised arc section intervallum that previous cutting edge leaves, and leaves simultaneously new with this cutting
The raised arc section intervallum that sword 2 is mutually engaged, maintenance positioning drill bit, thus moves in circles so that drill bit is in quilt all the time
Positioning states.
It is additionally, since the breach 3 set on each group cutting edge 2 symmetrically, then is symmetricly set on two on bit face
The raised arc section intervallum that individual cutting edge 2 leaves is just on same circumference, and this causes symmetrically arranged on bit face
Two stress of cutting edge 2 are identical, equalising torque, advantageously in the directionality of boring direction.
Embodiment 2
It is same as Example 1, but when drill edge 2 is longer, 2 can optionally set two or two on each cutting edge
Breach 3 above, but still need to ensure the symmetry and irregular property of breach 3.
Claims (5)
1. a kind of end face cross hard alloy cutting drill head with symmetric windows, including drill body, the drill body
Front end face provided with radially, cross center two orthogonal cross grooves, it is characterized in that：In the cross groove
It is symmetrical arranged on two groups of cutting edges, each group cutting edge and is equipped with symmetrical breach, the breach on adjacent cutting sword to center
Distance.
2. the end face cross hard alloy cutting drill head of symmetric windows is carried according to claim 1, it is characterized in that：Described
Gap width is more than or equal to 5mm.
3. the end face cross hard alloy cutting drill head of symmetric windows is carried according to claim 2, it is characterized in that：Described
Indentations section is to face directly or arcwall face.
4. the end face cross hard alloy cutting drill head of symmetric windows, its feature are carried according to any one of claims 1 to 3
It is：Described cutting edge is hard alloy material.
5. the end face cross hard alloy cutting drill head of symmetric windows, its feature are carried according to any one of claims 1 to 3
It is：Symmetrical a group or more of breach are equipped with described each group cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720134380.7U CN206455210U (en) | 2017-02-15 | 2017-02-15 | A kind of end face cross hard alloy cutting drill head with symmetric windows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720134380.7U CN206455210U (en) | 2017-02-15 | 2017-02-15 | A kind of end face cross hard alloy cutting drill head with symmetric windows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206455210U true CN206455210U (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720134380.7U Active CN206455210U (en) | 2017-02-15 | 2017-02-15 | A kind of end face cross hard alloy cutting drill head with symmetric windows |
Country Status (1)
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| CN (1) | CN206455210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052407A (en) * | 2017-02-15 | 2017-08-18 | 洛阳恒诺锚固技术有限公司 | A kind of end face cross hard alloy cutting drill head with symmetric windows |
-
2017
- 2017-02-15 CN CN201720134380.7U patent/CN206455210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052407A (en) * | 2017-02-15 | 2017-08-18 | 洛阳恒诺锚固技术有限公司 | A kind of end face cross hard alloy cutting drill head with symmetric windows |
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