CN204159940U - Head-exchangeable fluted drill - Google Patents
Head-exchangeable fluted drill Download PDFInfo
- Publication number
- CN204159940U CN204159940U CN201420559137.6U CN201420559137U CN204159940U CN 204159940 U CN204159940 U CN 204159940U CN 201420559137 U CN201420559137 U CN 201420559137U CN 204159940 U CN204159940 U CN 204159940U
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- China
- Prior art keywords
- hole
- drilling rod
- head
- fluted
- exchangeable
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- Expired - Fee Related
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Abstract
The utility model provides a kind of head-exchangeable fluted drill, belongs to process tool technical field.It solve the drilling rod of existing fluted drill and infiltrate for integral type structure, the material of drilling rod is identical with apex point material, there is the problem that manufacturing cost is high.This head-exchangeable fluted drill, comprise drilling rod and be located at drilling rod front portion with the apex point of drilling rod split-type design, the bottom center of apex point is provided with radial location block, the center of top of drilling rod is provided with radial detents, the two sides of radial location block have protruding cylinder surface, the both sides of radial detents have the fluted column face matched with this protruding cylinder surface, one of them fluted column face has tapped blind hole, another fluted column face has the through hole coaxially arranged with tapped blind hole, radial location block has the bellmouth coaxially arranged with this through hole, the taper bolt be threaded with tapped blind hole is equipped with in through hole, taper bolt matches with bellmouth.The utility model has the advantages such as result is reasonable in design, convenient disassembly, low cost of manufacture.
Description
Technical field
The utility model belongs to process tool technical field, relates to a kind of fluted drill, particularly a kind of head-exchangeable fluted drill.
Background technology
The drill bit conventional at present form adopting one, namely the bar portion, cutting edge, chip pocket etc. of drill bit are an entirety, all use identical material to make more.After the cutting edge partial destruction of drill bit, whole drill bit just must sharpening or replacing again.Therefore consider cutting edge part and drill bit shaft portion to be made into independent detachable unit form, " head-exchangeable " form that namely those of ordinary skill in the art are usually alleged.This head-exchangeable part can be changed after wear very easily, thus make expensive cutter hub can use the longer time, and head-exchangeable part can by hard wear-resistant material, and such as carbide alloy is made, and cutter hub can by having larger flexible material, such as steel is made.But head-exchangeable structure often exists the problem such as structural instability, position error, therefore how excellent, stabilized structure, head-changeable the taper drill of processability becomes the problem that each side personage makes great efforts solution.
For this reason, Chinese patent discloses a kind of head-changeable hard alloy taper drill [Authorization Notice No. is CN 203578866 U], it comprises bores body and drillstock, bore body top and be provided with demountable bit, bore body top and have a screwed hole, screwed hole sidewall has tapped through hole, drill bit rear end is provided with a locating piece matched with screwed hole, locating piece outer wall is provided with screw thread, locating piece has the tapped blind hole matched with tapped through hole, bore body to be fixedly connected with screwed hole by locating piece with drill bit, brill body and drill bit are located by connecting by tapped through hole and tapped blind hole by screw.
Although above-mentioned head-changeable hard alloy taper drill structural stability is good, still there is following problem: 1, need to be connected to by drill bit thread with it brill, because drill bit is sharper, manual operation easily hinders hand, and revolve not tight, stability is low; 2, by drill bit with bore after body connects, the club head portion of attachment screw is positioned at the outside of boring body, can have an impact adding man-hour bar head, and stop the discharge of scrap, reduce machining accuracy to workpiece.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes the head-exchangeable fluted drill of a kind of reasonable in design, easy accessibility.
The purpose of this utility model realizes by following technical proposal:
This head-exchangeable fluted drill, comprise drilling rod and be located at drilling rod front portion with the apex point of drilling rod split-type design, the bottom center of described apex point is provided with radial location block, the center of top of described drilling rod is provided with radial detents, described radial location block is positioned in this radial detents, the two sides of described radial location block have protruding cylinder surface, the both sides of described radial detents have the fluted column face matched with this protruding cylinder surface, it is characterized in that, fluted column face described in one of them has tapped blind hole, fluted column face described in another has the through hole coaxially arranged with tapped blind hole, described radial location block has the bellmouth coaxially arranged with this through hole, the taper bolt be threaded with described tapped blind hole is equipped with in described through hole, described taper bolt matches with described bellmouth.
During installation, the radial location block of apex point is put in the radial detents of drilling rod, now tapped blind hole, through hole and bellmouth are coaxially arranged, then are penetrated the side of taper bolt from through hole, and taper bolt is successively through through hole, bellmouth and tapped blind hole, then rotary conic bolt, taper bolt is threaded with tapped blind hole, and in the process, taper bolt contacts with bellmouth and tight fit gradually, reach the fixing object of apex point, there is advantage that is easy for installation, convenient disassembly.
In above-mentioned head-exchangeable fluted drill, the outer surface of described drilling rod has the layer hole coaxially arranged with above-mentioned through hole, described layer hole is communicated with this through hole, and the degree of depth in described layer hole is greater than the length of the bar head of above-mentioned taper bolt.This layer of hole is set, mainly makes the bar head of taper bolt can not be exposed to the outer surface of drilling rod, can not impact process, also can not stop the discharge of scrap simultaneously.
In above-mentioned head-exchangeable fluted drill, the both sides of described apex point are provided with circumferential locating slot, and the both sides at described drilling rod top are provided with circumferential locating piece, and described circumferential locating piece is positioned in described circumferential locating slot.
In above-mentioned head-exchangeable fluted drill, described apex point adopts high strength cemented carbide material to make.
Compared with prior art, this head-exchangeable fluted drill has the following advantages:
This reasonable in design, adopt split to be structural design apex point and drilling rod, apex point adopts high strength cemented carbide, and drilling rod adopts ordinary metallic material to make, and can effectively save production cost; Apex point and drilling rod mount and dismount convenient, install the good stability of rear apex point, contribute to improving machining accuracy; The bar head of taper bolt is positioned at a layer hole, can not impact process, also can not stop the discharge of scrap simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of preferred embodiment that the utility model provides.
In figure, 1, drilling rod; 11, radial detents; 12, fluted column face; 13, tapped blind hole; 14, through hole; 15, layer hole; 16, circumferential locating piece; 2, apex point; 21, radial location block; 22, protruding cylinder surface; 23, bellmouth; 24, circumferential locating slot; 3, taper bolt; 31, bar head.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Head-exchangeable fluted drill as shown in Figure 1, that comprise drilling rod 1 and be located at drilling rod 1 front portion with apex point 2 that is drilling rod 1 split-type design, the bottom center of apex point 2 is provided with radial location block 21, and the center of top of drilling rod 1 is provided with radial detents 11, and radial location block 21 is positioned in this radial detents 11.As shown in Figure 1, the two sides of radial location block 21 have protruding cylinder surface 22, and the both sides of radial detents 11 have the fluted column face 12 matched with this protruding cylinder surface 22.
As shown in Figure 1, fluted column face 12 described in one of them has tapped blind hole 13, another fluted column face 12 has the coaxial through hole 14 arranged with tapped blind hole 13, radial location block 21 has the coaxial bellmouth 23 arranged with this through hole 14, be equipped with the taper bolt 3 be threaded with described tapped blind hole 13 in through hole 14, taper bolt 3 matches with described bellmouth 23.
During installation, the radial location block 21 of apex point 2 is put in the radial detents 11 of drilling rod 1, now tapped blind hole 13, through hole 14 and bellmouth 23 are coaxially arranged, again the side of taper bolt 3 from through hole 14 is penetrated, taper bolt 3 is successively through through hole 14, bellmouth 23 and tapped blind hole 13, then rotary conic bolt 3, taper bolt 3 is threaded with tapped blind hole 13, in the process, taper bolt 3 contacts with bellmouth 23 and tight fit gradually, reach object fixing for apex point 2, there is advantage that is easy for installation, convenient disassembly.
As shown in Figure 1, the outer surface of drilling rod 1 has the coaxial layer hole 15 arranged with above-mentioned through hole 14, layer hole 15 is communicated with this through hole 14, and the degree of depth in layer hole 15 is greater than the length of the bar head 31 of taper bolt 3.This layer of hole 15 is set, mainly makes the bar head 31 of taper bolt 3 can not be exposed to the outer surface of drilling rod 1, can not impact process, also can not stop the discharge of scrap simultaneously.
Be provided with circumferential locating slot 24 in the both sides of apex point 2, the both sides at drilling rod 1 top are provided with circumferential locating piece 16, and circumferential locating piece 16 is positioned in circumferential locating slot 24, effectively can prevent apex point 2 rotation circumferential relative to drilling rod 1.
In the present embodiment, apex point 2 adopts high strength cemented carbide material to make.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (4)
1. a head-exchangeable fluted drill, comprise drilling rod (1) and be located at drilling rod (1) anterior with the apex point (2) of drilling rod (1) split-type design, the bottom center of described apex point (2) is provided with radial location block (21), the center of top of described drilling rod (1) is provided with radial detents (11), described radial location block (21) is positioned in this radial detents (11), the two sides of described radial location block (21) have protruding cylinder surface (22), the both sides of described radial detents (11) have the fluted column face (12) matched with this protruding cylinder surface (22), it is characterized in that, fluted column face (12) described in one of them has tapped blind hole (13), fluted column face (12) described in another has the coaxial through hole (14) arranged with tapped blind hole (13), described radial location block (21) has the coaxial bellmouth (23) arranged with this through hole (14), the taper bolt (3) be threaded with described tapped blind hole (13) is equipped with in described through hole (14), described taper bolt (3) matches with described bellmouth (23).
2. head-exchangeable fluted drill according to claim 1, it is characterized in that, the outer surface of described drilling rod (1) have the coaxial layer hole (15) arranged with above-mentioned through hole (14), described layer hole (15) is communicated with this through hole (14), and the degree of depth in described layer hole (15) is greater than the length of the bar head (31) of above-mentioned taper bolt (3).
3. head-exchangeable fluted drill according to claim 2, it is characterized in that, the both sides of described apex point (2) are provided with circumferential locating slot (24), the both sides at described drilling rod (1) top are provided with circumferential locating piece (16), and described circumferential locating piece (16) is positioned in described circumferential locating slot (24).
4. the head-exchangeable fluted drill according to claim 1 or 2 or 3, is characterized in that, described apex point (2) adopts high strength cemented carbide material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559137.6U CN204159940U (en) | 2014-09-27 | 2014-09-27 | Head-exchangeable fluted drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559137.6U CN204159940U (en) | 2014-09-27 | 2014-09-27 | Head-exchangeable fluted drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204159940U true CN204159940U (en) | 2015-02-18 |
Family
ID=52533668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420559137.6U Expired - Fee Related CN204159940U (en) | 2014-09-27 | 2014-09-27 | Head-exchangeable fluted drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204159940U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522201A (en) * | 2016-01-25 | 2016-04-27 | 台州华达工量具制造有限公司 | Drill with replaceable tool bit |
| CN113103385A (en) * | 2019-12-25 | 2021-07-13 | 三星钻石工业株式会社 | Joint article |
-
2014
- 2014-09-27 CN CN201420559137.6U patent/CN204159940U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522201A (en) * | 2016-01-25 | 2016-04-27 | 台州华达工量具制造有限公司 | Drill with replaceable tool bit |
| CN113103385A (en) * | 2019-12-25 | 2021-07-13 | 三星钻石工业株式会社 | Joint article |
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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 |
Granted publication date: 20150218 Termination date: 20150927 |
|
| EXPY | Termination of patent right or utility model |