CN203236014U - Drilling head with replaceable cutting head - Google Patents
Drilling head with replaceable cutting head Download PDFInfo
- Publication number
- CN203236014U CN203236014U CN 201220473796 CN201220473796U CN203236014U CN 203236014 U CN203236014 U CN 203236014U CN 201220473796 CN201220473796 CN 201220473796 CN 201220473796 U CN201220473796 U CN 201220473796U CN 203236014 U CN203236014 U CN 203236014U
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- Prior art keywords
- groove
- cutter tip
- locking hole
- operate portions
- bracket
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- 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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- 238000005553 drilling Methods 0.000 title abstract 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 10
- 239000000463 material Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses a drilling head with a replaceable cutting head. The drilling head comprises a drill body, the cutting head and a locking screw. The drilling head is characterized in that the drill body comprises a handle portion and a working portion, a chip removal groove is formed in the working portion, and the front end of the working portion is transversely provided with a cutting head fixing groove; the cutting head fixing groove is composed of an upper blade slot and a lower square-bracket-shaped groove, a positioning block is arranged in the middle of the bottom of the square-bracket-shaped groove, and two side walls of the square-bracket-shaped groove are respectively provided with a locking hole; the cutting head comprises a cutting portion and a fixing portion, the fixing portion is a square-bracket-shaped body, a positioning groove is formed in the bottom of the square-bracket-shaped body, and two sides of the square-bracket-shaped body is respectively provided with a through hole; the locking screw is matched with the locking hole and the through hole. According to the drilling head with the replaceable cutting head, the square-bracket-shaped groove is matched with the square-bracket-shaped body, so that the cutting head is replaceable and bears larger cutting force; due to the fact that the locking hole is formed in the square-bracket-shaped groove of the lower portion of the cutting head fixing groove, the height of the cutting portion is shortened, helical angles of the cutting head and the drill body are enlarged, and therefore the chip removal performance is strengthened.
Description
Technical field
The utility model relates to the drill bit technology of preparing, particularly a kind of drill bit of replaceable cutter tip.
Background technology
In the prior art, the cutting tip of drill bit commonly used and boring as an integral body when drill bit uses certain hour, just needs again sharpening after its cutting edge wearing and tearing.Refacing generally all is manual mill, so that some brill types that can improve stock-removing efficiency and prolongation cutter life are difficult to promote the use of; And drill bit generally can only be refaced more than 10 times, and remaining part can not be used, thereby has caused the waste of material and money.
The utility model content
For above-mentioned deficiency, the purpose of this utility model is, a kind of drill bit of replaceable cutter tip is provided.
The technical scheme that the utility model adopts for achieving the above object is:
A kind of drill bit of replaceable cutter tip, it comprises brill body, cutter tip and lock screw, and it is characterized in that: described brill body comprises shank and operate portions, and described operate portions is provided with chip area, and front end laterally is provided with a cutter head holddown groove; A described cutter head holddown groove part falls into the slot part of operate portions chip area, and another part falls into the back of operate portions, and is comprised of upper blade groove and bottom " ︺ " type groove, and the cross section of described " ︺ " type groove is positioned at the middle part of operate portions cross section; Be provided with the locating piece of a circular arc projection in the middle of described " ︺ " type trench bottom, the two side is provided with a locking hole, and this locking hole is vertical with " ︺ " type groove two side, and its axis and operate portions axis are crossing and be horizontally through " ︺ " type groove two side; Described cutter tip comprises cutting portion and fixed part, described fixed part is " ︺ " type body suitable with " ︺ " type groove, should " ︺ " type body the bottom be provided with one with the suitable circular arc detent of the locating piece of described circular arc projection, both sides are provided with the through hole suitable with the locking hole of described " ︺ " type groove two side, and the axis of this through hole is vertical with the axis of cutter tip and crossing; Described lock screw and described locking hole and through hole are suitable.
Be provided with just excessively ladder between the upper blade groove of described cutter head holddown groove and bottom " ︺ " the type groove; Be provided with the anti-excessively ladder suitable with the excessive ladder of cutter head holddown groove between the cutting portion of described cutter tip and the fixed part; Both match, thereby cutter tip is fastenedly connected in the cutter head holddown groove.
Chip area around the described operate portions is two chip areas straight or spiral.
Described locking hole is counter sink, and the head of lock screw is hidden in the counterbore, makes the performance of drill bit better.
The utility model has the advantage of: the cutting tip of drill bit can adopt the cutter material of utility model to make, and wears into the brill type that can improve stock-removing efficiency and prolong cutter life, bores body and then can adopt common steel preparation; Drill bit uses certain hour, and after wearing and tearing appearred in cutter tip, the cutter tip that more renews can keep the service behaviour of drill bit, bores the body recycling thereby reach; Improve working (machining) efficiency, the worry of not refacing reduces waste of material, cuts down finished cost; In addition, " ︺ " type groove cooperates with " ︺ " type body, strengthened described cutter tip and the structural strength of boring body, make drill bit at work cutter tip can bear larger cutting force, make between smear metal section, " ︺ " type groove and " ︺ " type body of described cutter tip not easy fracture; Avoided at the cutting portion of smear metal cutter head locking hole being set, but locking hole has been arranged on " ︺ " type groove of cutter head holddown groove bottom, thereby the height of cutting portion can have been shortened, increased cutter tip and brill helical angle with it, strengthened the chip removal performance.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model embodiment;
Fig. 2 is the fractionation structural representation of the utility model embodiment;
Fig. 3 is the cutter tip schematic diagram of the utility model embodiment;
Among the figure: 1. bore body; 2. cutter tip; 21. cutting portion; 22. fixed part; 23. detent; 24. through hole; 25. anti-excessively ladder; 3. lock screw; 4. shank; 5. operate portions; 6. chip area; 7. cutter head holddown groove; 71. insert groove; 72 " ︺ " type groove; 73. locating piece; 74. locking hole; 75. just excessive ladder.
The specific embodiment
Referring to Fig. 1 to Fig. 3, the drill bit of a kind of replaceable cutter tip that present embodiment provides, it comprises brill body 1, cutter tip 2 and lock screw 3, described brill body 1 comprises shank 4 and operate portions 5, described operate portions 5 is provided with chip area 6, and front end laterally is provided with a cutter head holddown groove 7; Described cutter head holddown groove 7 parts fall into the slot part of operate portions 5 chip areas 6, another part falls into the back of operate portions 5, and be comprised of upper blade groove 71 and bottom " ︺ " type groove 72, the cross section of described " ︺ " type groove 72 is positioned at the middle part of operate portions 5 cross sections; Be provided with the locating piece 73 of a circular arc projection in the middle of described " ︺ " type groove 72 bottoms, the two side is provided with a locking hole 74, this locking hole 74 is vertical with " ︺ " type groove 72 two sides, and its axis and operate portions 5 axis are intersected and are horizontally through " ︺ " type groove 72 two sides; Described cutter tip 2 comprises cutting portion 21 and fixed part 22, described fixed part 22 is " ︺ " type body suitable with " ︺ " type groove 72, should " ︺ " type body the bottom be provided with one with the suitable circular arc detent 23 of the locating piece 73 of described circular arc projection, both sides are provided with the through hole 24 suitable with the locking hole 74 of described " ︺ " type groove 72 two sides, and the axis of this through hole 24 is vertical with the axis of cutter tip 2 and intersect; Described lock screw 3 is suitable with described locking hole 74 and through hole 24.
Be provided with just excessively ladder 75 between the upper blade groove 71 of described cutter head holddown groove 7 and bottom " ︺ " the type groove 72; Be provided with the anti-excessively ladder 25 suitable with the just excessively ladder 75 of cutter head holddown groove 72 between the cutting portion 21 of described cutter tip 2 and the fixed part 22; Both match, thereby cutter tip 2 is fastenedly connected in the cutter head holddown groove 7.
Chip area 6 around the described operate portions is two chip areas straight or spiral.
Described locking hole is counter sink, and the head of lock screw is hidden in the counterbore, makes the performance of drill bit better.
During assembling, described cutter tip 2 is assembled on the described cutter head holddown groove 7, described cutting portion 21 corresponding described insert grooves 71, described fixed part 22 " ︺ " type body correspondence described " ︺ " type groove 72, described detent 23 corresponding described locating pieces 73, and closely cooperate; Described lock screw 3 is placed through in described locking hole 74 and the through hole 24, thereby described cutter tip 2 is fixed in the operate portions 5 of boring body, form the drill bit of replaceable cutter tip 2.
The cutting tip of drill bit can adopt the cutter material of utility model to make, and wears into the brill type that can improve stock-removing efficiency and prolong cutter life, bores body and then can adopt common steel preparation; Drill bit uses certain hour, and after wearing and tearing appearred in cutter tip, the cutter tip that more renews can keep the service behaviour of drill bit, bores the body recycling thereby reach; Improve working (machining) efficiency, the worry of not refacing reduces waste of material, cuts down finished cost; In addition, " ︺ " type groove cooperates with " ︺ " type body, strengthened described cutter tip and the structural strength of boring body, make drill bit at work cutter tip can bear larger cutting force, make between smear metal section, " ︺ " type groove and " ︺ " type body of described cutter tip not easy fracture; Avoided at the cutting portion of smear metal cutter head locking hole being set, but locking hole has been arranged on " ︺ " type groove of cutter head holddown groove bottom, thereby the height of cutting portion can have been shortened, increased cutter tip and brill helical angle with it, strengthened the chip removal performance.
The utility model is not limited to above-mentioned embodiment, adopts the technical characterictic identical or approximate with the utility model above-described embodiment, and the drill bit of other replaceable cutter tips that obtain, all within protection domain of the present utility model.
Claims (5)
1. the drill bit of a replaceable cutter tip, it comprises and bores body, cutter tip and lock screw, and it is characterized in that: described brill body comprises shank and operate portions, and described operate portions is provided with chip area, and front end laterally is provided with a cutter head holddown groove; A described cutter head holddown groove part falls into the slot part of operate portions chip area, and another part falls into the back of operate portions, and is comprised of upper blade groove and bottom " ︺ " type groove, and the cross section of described " ︺ " type groove is positioned at the middle part of operate portions cross section; Be provided with the locating piece of a circular arc projection in the middle of described " ︺ " type trench bottom, the two side is provided with a locking hole, and this locking hole is vertical with " ︺ " type groove two side, and its axis and operate portions axis are crossing and be horizontally through " ︺ " type groove two side; Described cutter tip comprises cutting portion and fixed part, described fixed part is " ︺ " type body suitable with " ︺ " type groove, should " ︺ " type body the bottom be provided with one with the suitable circular arc detent of the locating piece of described circular arc projection, both sides are provided with the through hole suitable with the locking hole of described " ︺ " type groove two side, and the axis of this through hole is vertical with the axis of cutter tip and crossing; Described lock screw and described locking hole and through hole are suitable.
2. the drill bit of replaceable cutter tip according to claim 1 is characterized in that: be provided with just excessively ladder between the upper blade groove of described cutter head holddown groove and bottom " ︺ " the type groove.
3. the drill bit of replaceable cutter tip according to claim 1 is characterized in that: be provided with the anti-excessively ladder suitable with the excessive ladder of cutter head holddown groove between the cutting portion of described cutter tip and the fixed part.
4. the drill bit of replaceable cutter tip according to claim 1, it is characterized in that: the chip area of described operate portions is two chip areas straight or spiral.
5. the drill bit of replaceable cutter tip according to claim 1, it is characterized in that: described locking hole is counter sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473796 CN203236014U (en) | 2012-09-17 | 2012-09-17 | Drilling head with replaceable cutting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473796 CN203236014U (en) | 2012-09-17 | 2012-09-17 | Drilling head with replaceable cutting head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203236014U true CN203236014U (en) | 2013-10-16 |
Family
ID=49313348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220473796 Expired - Fee Related CN203236014U (en) | 2012-09-17 | 2012-09-17 | Drilling head with replaceable cutting head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203236014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750596A (en) * | 2015-12-08 | 2016-07-13 | 博世电动工具（中国）有限公司 | Drill bit |
-
2012
- 2012-09-17 CN CN 201220473796 patent/CN203236014U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750596A (en) * | 2015-12-08 | 2016-07-13 | 博世电动工具（中国）有限公司 | Drill bit |
| CN105750596B (en) * | 2015-12-08 | 2018-06-05 | 博世电动工具（中国）有限公司 | drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN ERIC PRECISION TOOLS CO., LTD. Free format text: FORMER OWNER: SU MAOJUN Effective date: 20150209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150209 Address after: Guangdong province Dongguan City Wanjiang 523000 new venture industrial park and community Sheng Feng Lu No. 12 C building, first floor B Patentee after: Dongguan Eric precision tools Co., Ltd. Address before: 523000 Guangdong province Dongguan City Wanjiang Jiangbin Garden 7 10 3C Patentee before: Su Maojun |
|
| 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: 20131016 Termination date: 20180917 |