CN206622677U - A kind of hard alloy centre drill - Google Patents
A kind of hard alloy centre drill Download PDFInfo
- Publication number
- CN206622677U CN206622677U CN201720429215.4U CN201720429215U CN206622677U CN 206622677 U CN206622677 U CN 206622677U CN 201720429215 U CN201720429215 U CN 201720429215U CN 206622677 U CN206622677 U CN 206622677U
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- pin
- drill bit
- chip area
- drill
- 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
The utility model discloses a kind of hard alloy centre drill, including drilling rod, the drilling rod left and right ends are arranged with the stable conical surface of reaming, the stable conical surface outer end of the reaming is provided with drill bit, the drill bit is provided with chip area, the chip area extends to drilling rod by drill bit end, and the drill bit end forms cutting edge by chip area；By being provided with lubricating fluid guide groove in chip area, so that centre drill is in the course of the work, cooling-lubricant is easier between the cutting edge and metal contact surface of drill bit, increase lubrication and the effect of cooling, installation clamps ring on original drilling rod simultaneously, wave pin is provided with inside clamping ring and when pin, slide opening and the compression spring that matching is located on drilling rod are realizing excessive in torsion, relative slip can be realized between ring and drilling rod by clamping, during so as to ensure that drill bit avoids the amount of feeding excessive in use, the Drill Crack caused by torsion.
Description
Technical field
Machine tools technical field is the utility model is related to, specially a kind of hard alloy centre drill.
Background technology
Alloy center bore be center hole machined on the part end faces such as axle class a kind of machining tool, common alloy
Centre drill is an integral forming structure, when carrying out fixed-point drill, cuts the metal fillings to get off and is exported by chip area, and is caused
The metalworking coolant cooled down penetrates into slowly, while when carrying out perforate cutting, because the amount of feeding is excessive, sometimes will
The tip of drill bit twists off, and causes disconnected point to be stuck in blind hole, it is difficult to take out, can not further positional punch so that following process
It can not carry out, be this it is proposed that a kind of hard alloy centre drill.
Utility model content
The purpose of this utility model is to provide a kind of hard alloy centre drill, to solve what is proposed in above-mentioned background technology
Problem.
To achieve the above object, the utility model provides following technical scheme：A kind of hard alloy centre drill, including bore
Bar, the drilling rod left and right ends are arranged with the stable conical surface of reaming, and the stable conical surface outer end of the reaming is provided with drill bit, the drill bit
Chip area is provided with, the chip area extends to drilling rod by drill bit end, and the drill bit end forms cutting edge by chip area, institute
State chip area cambered surface and be provided with lubricating fluid guide groove；
Clamping ring is set with the middle part of the drilling rod, the clamping ring internal diameter is uniformly provided with wave pin, described to clamp inside ring
Drilling rod external diameter be provided with slide opening, the slide opening internal slide is provided with pin, and the pin tail end is provided with blind hole, and inside blind hole
Provided with compression spring.
Preferably, the ring outer surface that clamps is provided with three anti-slip tanks staggeredly.
Preferably, the quantity of the identical wave pin of the pin quantity.
Preferably, the pin pin end is dome-type.
Compared with prior art, the beneficial effects of the utility model are：By being provided with lubricating fluid guide groove in chip area, make
Centre drill in the course of the work so that cooling-lubricant can be easier into drill bit cutting edge and metal contact surface it
Between, increase lubrication and cooling effect, while on original drilling rod installation clamp ring, clamp ring inside be provided with wave pin and
When pin, slide opening and the compression spring that matching is located on drilling rod realize excessive in torsion, clamping between ring and drilling rod can be with
Relative slip is realized, during so as to ensure that drill bit avoids the amount of feeding excessive in use, the Drill Crack caused by torsion.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is A-A` cross section structure schematic diagrams in Fig. 1.
In figure：1st, drilling rod, 2, chip area, 3, cutting edge, 4, lubricating fluid guide groove, 5, drill bit, 6, the stable conical surface of reaming, 7,
Clamp ring, 8, wave pin, 9, pin, 10, compression spring, 11, slide opening.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of hard alloy centre drill, including drilling rod 1,
It is the main installation carrier of whole centre drill, the left and right ends of drilling rod 1 are arranged with the stable conical surface 6 of reaming, to the small of tip
When hole is expanded, steady-working state, and the expansion in aperture is carried out, the stable outer end of the conical surface 6 of the reaming is provided with drill bit 5,
The working portion of rapidoprint is treated, the drill bit 5 is provided with chip area 2, and cutting edge 3 is cut into metal fillings by blind hole
Portion exports, and the chip area 2 extends to drilling rod 1 by the end of drill bit 5 so that the discharge of metal fillings is more thorough, the end of drill bit 5
Portion forms cutting edge 3 by chip area 2, the main working parts cut the metal of contact surface, the arc of chip area 2
Face is provided with lubricating fluid guide groove 4 so that cooling-lubricant can preferably enter the blind hole carried out；
The middle part of drilling rod 1, which is set with, clamps ring 7, carries out clamping structure when centre drill is arranged on, described to clamp in ring 7
Footpath is uniformly provided with wave pin 8, realizes that the clamping to pin 9 positions by the control of wave pin, the drilling rod clamped inside ring 7
1 external diameter is provided with slide opening 11, installs pin 9 and pin 9 is internally slided, the internal slide of slide opening 11 is provided with
Pin 9, wave pin 8 is coordinated to realize the indirect fixed installation to clamping ring 7, the tail end of pin 9 is provided with blind hole, and inside blind hole
Provided with compression spring 10 so that pin 9 can be reciprocatingly slided inside slide opening 11, and enable pin 9 to wave
The flexible fastening of pin 8.
Specifically, the outer surface of ring 7 that clamps is provided with three anti-slip tanks staggeredly so that clamping ring 7 can be more preferable
It is installed in external motive device, avoids sliding when using.
Specifically, the quantity of the identical wave pin 8 of the quantity of pin 9, increases stability during flexible fastening.
Specifically, it is dome-type that the pin 9, which sells end, so that the torsion between pin 9 and wave pin 8 can when excessive
Preferably slide, avoid the stuck problem of rib type pin.
Operation principle：Pass through wave pin 8 and pin 9 by ring 7 on centre drill power set mounted externally, is now clamped
Coordinate, realize the elasticity clamping for clamping ring 7 and drilling rod 1, when being operated, when drill bit 5 carries out drilling cutting to metal, cutting edge
Mouthful 3 pairs of metals are cut, and metal fillings is exported by chip area 2, cooling-lubricant by lubricating fluid guide groove 4 enter cutting edge 3 with
Metal contact position, when the amount of feeding is excessive, drilling rod 1 and clamp ring 7 between torsion can increase, and now wave pin 8 with
Relative displacement occurs for pin 9, and compressing pin 9 internally slides inside slide opening 11, while oppresses compression spring 10 and carry out accumulation of energy,
Drill bit 5 is protected, when torsion is too small, passes through the elastic force of compression spring 10 so that between the clamping wave pin 8 of pin 9 is realized
Connect fixation.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of hard alloy centre drill, including drilling rod (1), it is characterised in that：Drilling rod (1) left and right ends are arranged with expansion
The stable conical surface (6) in hole, the stable conical surface (6) outer end of the reaming are provided with drill bit (5), and the drill bit (5) is provided with chip area (2), institute
State chip area (2) and drilling rod (1) is extended to by drill bit (5) end, drill bit (5) end forms cutting edge by chip area (2)
(3), chip area (2) cambered surface is provided with lubricating fluid guide groove (4)；
It is set with the middle part of the drilling rod (1) and clamps ring (7), described clamping ring (7) internal diameter is uniformly provided with wave pin (8), the card
Internal drilling rod (1) external diameter of dress ring (7) is provided with slide opening (11), and slide opening (11) internal slide is provided with pin (9), the post
Pin (9) tail end is provided with blind hole, and is provided with compression spring (10) inside blind hole.
A kind of 2. hard alloy centre drill according to claim 1, it is characterised in that：Described clamping ring (7) outer surface is set
There is three anti-slip tanks staggeredly.
A kind of 3. hard alloy centre drill according to claim 1, it is characterised in that：Pin (9) quantity is coincide ripple
The quantity of wave pin (8).
A kind of 4. hard alloy centre drill according to claim 1, it is characterised in that：Pin (9) the pin end is hemisphere
Type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720429215.4U CN206622677U (en) | 2017-04-21 | 2017-04-21 | A kind of hard alloy centre drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720429215.4U CN206622677U (en) | 2017-04-21 | 2017-04-21 | A kind of hard alloy centre drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206622677U true CN206622677U (en) | 2017-11-10 |
Family
ID=60205652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720429215.4U Expired - Fee Related CN206622677U (en) | 2017-04-21 | 2017-04-21 | A kind of hard alloy centre drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206622677U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113996847A (en) * | 2021-12-02 | 2022-02-01 | 常州市博斯特精密机械有限公司 | Drill bit capable of improving working efficiency |
| CN114109274A (en) * | 2021-11-09 | 2022-03-01 | 祁东县锋速钻探工具有限公司 | Vibration-proof drill bit mechanism with flexible connection |
| CN114535664A (en) * | 2022-03-10 | 2022-05-27 | 常州市西夏墅永昌工具有限公司 | Detachable center drill convenient to clamp and position |
-
2017
- 2017-04-21 CN CN201720429215.4U patent/CN206622677U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109274A (en) * | 2021-11-09 | 2022-03-01 | 祁东县锋速钻探工具有限公司 | Vibration-proof drill bit mechanism with flexible connection |
| CN113996847A (en) * | 2021-12-02 | 2022-02-01 | 常州市博斯特精密机械有限公司 | Drill bit capable of improving working efficiency |
| CN114535664A (en) * | 2022-03-10 | 2022-05-27 | 常州市西夏墅永昌工具有限公司 | Detachable center drill convenient to clamp and position |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171110 Termination date: 20180421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |