CN205798537U - A kind of composite drill bit - Google Patents
A kind of composite drill bit Download PDFInfo
- Publication number
- CN205798537U CN205798537U CN201620678027.0U CN201620678027U CN205798537U CN 205798537 U CN205798537 U CN 205798537U CN 201620678027 U CN201620678027 U CN 201620678027U CN 205798537 U CN205798537 U CN 205798537U
- Authority
- CN
- China
- Prior art keywords
- cutting slot
- stage portion
- knife bar
- drill bit
- diameter
- 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
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Abstract
This utility model provides a kind of composite drill bit, belongs to cutter of drill machine technical field, the problem that when it solving existing composite drill bit multistage manufacturing processes, machining accuracy is relatively low.This composite drill bit includes matrix and is arranged on the cutter head of base end, matrix includes the stage portion of cylinder, the two ends of stage portion are protruded and are formed with connecting portion and knife bar portion, the diameter of stage portion is more than the diameter of connecting portion, the diameter of stage portion is more than the diameter in knife bar portion, knife bar portion offers spiral helicine first cutting slot and spiral helicine second cutting slot, first cutting slot and the second cutting slot extend to the stage portion end near connecting portion, first cutting slot is provided with boring cutter, boring cutter is arranged on stage portion on the step surface in knife bar portion, it is provided with rose reamer in the second cutting slot.This composite drill bit has simple in construction, the advantage that machining accuracy is high.
Description
Technical field
This utility model relates to cutter of drill machine technical field, particularly relates to a kind of composite drill bit.
Background technology
On workpiece, the hole of machining high-precision typically requires and first uses drill bit machined bottom, by boring cutter or reamer the end of to
Hole carries out polish, finally with rose reamer, the bottom outlet of polish is being carried out chamfering, and processor is more, and working (machining) efficiency is relatively
Low, and due to the cumulative error of various operations, the machining accuracy in the hole being finally completed also tends to the highest.
Chinese patent CN201442122U discloses the two-step diamond drill bit that a kind of machining uses, including a handle
With second order bit body, it is characterised in that second order bit body makes two steps, is welded with Buddha's warrior attendant at the cutting on first step
First blade of stone, is welded with the second blade of diamond at the cutting on second step.Two blades of the program and brill
Head body is all connected as a single entity, and after one of them breaks down, overall just damage of drill bit cannot be continuing with, and waste is relatively big, increases
Production cost.
Utility model content
The technical problems to be solved in the utility model is: providing a kind of simple in construction, cost is relatively low, and machining accuracy is higher
Composite drill bit.
In order to solve described technical problem, the technical solution of the utility model: a kind of composite drill knife bar, including matrix and peace
Being contained in the cutter head of base end, described matrix includes the stage portion of cylinder, and the two ends of described stage portion are protruded and are formed with connection
Portion and knife bar portion, the diameter of described stage portion is more than the diameter in knife bar portion more than the diameter of connecting portion, the diameter of described stage portion,
Described knife bar portion offers spiral helicine first cutting slot and spiral helicine second cutting slot, described first cutting slot and
Two cutting slots extend to the described stage portion end near connecting portion, are provided with boring cutter, described boring cutter on described first cutting slot
Be arranged on stage portion on the step surface in knife bar portion, in described second cutting slot on be provided with rose reamer.
As preferably, also there is between stage portion and knife bar portion a step-like transition part, described transition part with
Be provided with a breach between second cutting slot, in described breach, be provided with rose reamer installing hole, described rose reamer be arranged on described fall
In the cutter installing hole of angle and rose reamer protrudes the seamed edge of described transition part.
As preferably, one of them rib portion that the first cutting slot and the second cutting slot intersect with stage portion is provided with helical form
Transition face.
Compared with prior art, this utility model uses technique scheme to have the advantage that
1, this composite drill bit can carry out bore hole and chamfering while boring, and working (machining) efficiency is high, and boring cutter and rose reamer are equal
Being arranged on same matrix, axiality is high, good processing accuracy.
2, boring cutter and the rose reamer of this composite drill bit is all to be detachably arranged on the matrix of composite drill bit, wherein has one
After individual breaks down, being only replaced this blade, processing cost is low.
3, the cutting slot of this composite drill bit uses spiral helicine curved surface, it is simple to the chip that processing produces is discharged.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is another viewing angle constructions schematic diagram of the present utility model.
In figure, 1, connecting portion；2, locating surface；3, stage portion；4, the first cutting slot；4a, the second cutting slot；5, boring cutter is installed
Hole；6, transition part；7, step intersection；8, knife bar portion；9, boring cutter head；10, rose reamer installing hole；11, transition face.
Detailed description of the invention
Below by combining the drawings and specific embodiments, the technical solution of the utility model is described in further detail.
See in figure, the composite drill bit that this utility model provides, including matrix and the boring cutter head 9 being arranged on base end,
Matrix includes columned stage portion 3, the one-body molded connecting portion 1 at stage portion 3 two ends and knife bar portion 8, the diameter of stage portion 3
More than the diameter of connecting portion 1, the diameter of stage portion 3 is more than the diameter in knife bar portion 8, and connecting portion 1 is provided with axial locating surface 2,
It is easy to composite drill bit be assembled on drilling machine.Knife bar portion 8 is provided with spiral helicine first cutting slot 4 and spiral helicine second cutting slot
4a, the first cutting slot 4 and the second cutting slot 4a extends to the stage portion 3 end near connecting portion 1, in actual application,
The boring cutter head 9 being arranged on base end is holed, and the chip produced of generally holing is continuous print bar shaped chip, bar
Shape chip be difficult to discharge, spiral helicine cutting slot when bar shaped chip is discharged, the forniciform inwall of cutting slot and bar shaped chip phase
Touch, interrupted, it is simple to chip is preferably discharged.Diameter due to stage portion 3 is more than the diameter in knife bar portion 8, relative, step
The degree of depth of the cutting slot in portion 3 is more than the cutting slot degree of depth in knife bar portion 8, and for the ease of the processing of cutting slot, this composite drill bit exists
It is equipped with transition face 11, transition face 11 in one of them rib portion that stage portion 3 intersects with the first cutting slot 4 and the second cutting slot 4a
Setting make the cutting slot that the degree of depth at stage portion 3 is higher be more prone to processing.
First cutting slot 4 is provided with an installation portion, installation position at the step surface that stage portion 3 intersects with knife bar portion 8,
Being provided with boring cutter installing hole 5 in installation portion, be provided with boring cutter in boring cutter installing hole 5, the edge of a knife of boring cutter protrudes stage portion 3 and knife bar portion
Between 8 step intersection 7.
Bottom the step surface that knife bar portion 8 and stage portion 3 intersect, be provided with a transition part 6, transition part 6 in step-like,
Transition part 6 and the second cutting slot 4a intersection are provided with a breach, are provided with rose reamer installing hole 10, rose reamer installing hole 10 in breach
Inside being provided with rose reamer, the edge of a knife of rose reamer protrudes the seamed edge of transition part 6.
During the work of this composite drill bit, drilling machine drives composite drill bit to rotate, and boring cutter head 9 drilling centre bore also gradually bores deep
Hole, the chip that boring produces discharges outside workpiece along the first cutting slot 4 and the second cutting slot 4a, and boring can be carried out by the wedge angle of boring cutter
Polish, rose reamer can carry out chamfering to boring, and time processing realizes the brill in hole, boring, chamfering three process, and working (machining) efficiency is high.
Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute
Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (3)
1. a composite drill bit, including matrix and the cutter head being arranged on base end, it is characterised in that described matrix includes cylinder
The stage portion of shape, the two ends protrusion of described stage portion is formed with connecting portion and knife bar portion, and the diameter of described stage portion is more than connecting
The diameter in portion, the diameter of described stage portion, more than the diameter in knife bar portion, offers spiral helicine first in described knife bar portion and cuts
Cutting groove and spiral helicine second cutting slot, described first cutting slot and the second cutting slot extend to described stage portion near connecting portion
End, described first cutting slot is provided with boring cutter, described boring cutter is arranged on stage portion on the step surface in knife bar portion,
It is provided with rose reamer in described second cutting slot.
Composite drill bit the most according to claim 1, it is characterised in that also there are between stage portion and knife bar portion rank
Trapezoidal transition part, is provided with a breach between described transition part and the second cutting slot, is provided with rose reamer peace in described breach
Dress hole, described rose reamer is arranged in described rose reamer installing hole and rose reamer protrudes the seamed edge of described transition part.
Composite drill bit the most according to claim 1, it is characterised in that the first cutting slot and the second cutting slot and stage portion phase
One of them the rib portion handed over is provided with spiral helicine transition face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620678027.0U CN205798537U (en) | 2016-06-28 | 2016-06-28 | A kind of composite drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620678027.0U CN205798537U (en) | 2016-06-28 | 2016-06-28 | A kind of composite drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205798537U true CN205798537U (en) | 2016-12-14 |
Family
ID=57512119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620678027.0U Expired - Fee Related CN205798537U (en) | 2016-06-28 | 2016-06-28 | A kind of composite drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205798537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109176053A (en) * | 2018-09-07 | 2019-01-11 | 上海新山田精密刀具有限公司 | A kind of self-locking knife bar |
-
2016
- 2016-06-28 CN CN201620678027.0U patent/CN205798537U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109176053A (en) * | 2018-09-07 | 2019-01-11 | 上海新山田精密刀具有限公司 | A kind of self-locking knife bar |
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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: 20161214 Termination date: 20170628 |