CN104084625A - Adjustable step drill bit - Google Patents
Adjustable step drill bit Download PDFInfo
- Publication number
- CN104084625A CN104084625A CN201410326204.4A CN201410326204A CN104084625A CN 104084625 A CN104084625 A CN 104084625A CN 201410326204 A CN201410326204 A CN 201410326204A CN 104084625 A CN104084625 A CN 104084625A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- hole
- bit body
- sleeve
- large 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/009—Stepped drills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention relates to an adjustable step drill bit which comprises a large drill bit body, an adjustment screw, a small drill bit body and a sleeve. The whole large drill bit body is of a cylindrical structure, and a circular through hole is formed in the center of the large drill bit body and longitudinally penetrates through the whole large drill bit body; meanwhile, an unthreaded hole and a threaded hole are transversely formed in the two opposite ends of the middle of the large drill bit body respectively. A conical surface is arranged at one end of the large drill bit body, and a cutting edge of the large drill bit body is arranged at the other end of the large drill bit body. The small drill bit body is located in the circular through hole of the large drill bit body and can vertically move in the whole circular through hole. Through holes same in size are transversely and evenly formed in the small drill bit body in parallel. The sleeve is installed on the outer surface of the small drill bit body in a sleeved mode. Kidney-shaped holes are formed in the two opposite ends of the sleeve. A lug hole is formed in one end of the sleeve. The adjustment screw penetrates through the unthreaded hole, the corresponding through hole, the kidney-shaped holes and the threaded hole to enable the large drill bit body, the small drill bit body and the sleeve to be fastened together. According to the adjustable step drill bit, the drilling diameter and the drilling depth can both be changed, and the concentricity of a step hole can be effectively guaranteed.
Description
Technical field
The invention belongs to mechanical manufacturing field, particularly a kind of adjustable subland drill.
Background technology
At machinery industry, the processing of shoulder hole is very general, and therefore subland drill arises at the historic moment.But there is certain defect in existing step drill, can be disposable make a call to 2 holes or 3 holes, but the degree of depth of aperture and shoulder hole fixes, cannot adjust.That is to say that a subland drill can only process by corresponding one group of shoulder hole.
Summary of the invention
For overcoming above-mentioned defect, the technical problem to be solved in the present invention is to provide a kind of simple in structure, easy to operate and can adjustment aperture and the drill bit of hole depth.
A kind of adjustable subland drill, this subland drill comprises: large drill bit, adjustment screw, little drill bit, sleeve; Whole large drill bit is cylindrical structural, and its center is provided with manhole, and manhole longitudinally runs through whole large drill bit; Laterally respectively be provided with a unthreaded hole and screwed hole at the middle part opposite end of large drill bit simultaneously; One end at described large drill bit is provided with trochoidal surface, the cutting edge that the other end is large drill bit; Described little drill bit is positioned at the manhole of large drill bit, can in whole manhole, move up and down; The horizontal even parallel through hole that size is identical that is provided with on bradawl head; Described sleeve set is at the outer surface of little drill bit; Opposite end at sleeve is provided with mounting hole; Be provided with earhole in one end; Described adjustment screw tightens together large drill bit, little drill bit, sleeve through unthreaded hole, through hole, mounting hole, screwed hole.
The wall thickness of described sleeve is 0.5～2 ㎜.
The number of described through hole is 2～5.
The adjustable subland drill of the present invention has been broken traditional shoulder hole can not convert the situation of boring footpath and drilling depth, this subland drill both can have been changed the different drill bits that bore footpath, drilling depth can be adjusted as required again, and the concentricity requirement of shoulder hole can be effectively ensured.
Brief description of the drawings
Fig. 1 is the structural representation of the adjustable subland drill of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, a kind of adjustable subland drill, this drill bit comprises: large drill bit 1, adjustment screw 2, bradawl head 4, sleeve 7.Whole large drill bit 1 is cylindrical structural, and its center is provided with manhole 11, and manhole 11 longitudinally runs through whole large drill bit 1; Laterally respectively be provided with a unthreaded hole 3 and screwed hole 10 at the middle part opposite end of large drill bit 1 simultaneously; One end at large drill bit 1 is provided with trochoidal surface 5, for machine tool chief axis tight fit; The other end is the cutting edge of large drill bit 1.Bradawl head 4 is positioned at the manhole 11 of large drill bit 1, can in whole manhole 11, move up and down; Horizontal even parallel 2～5 through holes 8 that size is identical that are provided with on bradawl head 4.Sleeve 7 is sleeved on the outer surface of bradawl head 4; Be provided with mounting hole 9 at the opposite end of sleeve 7; Be provided with earhole 6 in one end, be convenient to sleeve 7 to move up and down.Adjustment screw 2 tightens together large drill bit 1, bradawl head 4, sleeve 7 through unthreaded hole 3, through hole 8, mounting hole 9, screwed hole 10.
The adjustable drill bit of the present invention is in the time of work, first bradawl head 4 is packed in the longitudinal hole 11 of large drill bit 1, regulate the position of through hole 8 according to required drilling depth, then be set with corresponding sleeve 7 according to the gap between large and small drill bit, adjust the position between large and small drill bit and sleeve, then tightened together by adjustment screw 2, finally the trochoidal surface 5 and machine tool chief axis tight fit by large drill bit 1 by the subland drill assembling.The wall thickness of middle sleeve 7 of the present invention is 0.5～2 ㎜, because the size of longitudinal manhole 11 of large drill bit 1 is fixed, if the diameter difference of bradawl head 4, the gap between large and small drill bit is different, add the sleeve 7 of different wall, can prevent that bradawl head 4 from rocking in the manhole 11 of large drill bit 1, to ensure the crudy of shoulder hole.
Claims (3)
1. an adjustable subland drill, is characterized in that: this subland drill comprises: large drill bit (1), adjustment screw (2), little drill bit (4), sleeve (7); Whole large drill bit (1) is cylindrical structural, and its center is provided with manhole (11), and manhole (11) longitudinally runs through whole large drill bit (1); Laterally respectively be provided with a unthreaded hole (3) and screwed hole (10) at the middle part opposite end of large drill bit (1) simultaneously; Be provided with trochoidal surface (5) in one end of described large drill bit (1), the other end is the cutting edge of large drill bit (1); Described little drill bit (4) is positioned at the manhole (11) of large drill bit (1), can in whole manhole (11), move up and down; At the upper laterally even parallel through hole (8) that size is identical that is provided with of little drill bit (4); Described sleeve (7) is sleeved on the outer surface of little drill bit (4); Be provided with mounting hole (9) at the opposite end of sleeve (7); Be provided with earhole (6) in one end; Described adjustment screw (2) tightens together large drill bit (1), little drill bit (4), sleeve (7) through unthreaded hole (3), through hole (8), mounting hole (9), screwed hole (10).
2. adjustable subland drill according to claim 1, is characterized in that: the wall thickness of described sleeve (7) is 0.5～2 ㎜.
3. adjustable subland drill according to claim 1, is characterized in that: the number of described through hole (8) is 2～5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410326204.4A CN104084625A (en) | 2014-07-10 | 2014-07-10 | Adjustable step drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410326204.4A CN104084625A (en) | 2014-07-10 | 2014-07-10 | Adjustable step drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104084625A true CN104084625A (en) | 2014-10-08 |
Family
ID=51632442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410326204.4A Pending CN104084625A (en) | 2014-07-10 | 2014-07-10 | Adjustable step drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104084625A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551114A (en) * | 2014-12-29 | 2015-04-29 | 苏州用朴合金工具有限公司 | Adjustable combination stepped drill bit |
| CN104625170A (en) * | 2014-12-31 | 2015-05-20 | 苏州欧美克合金工具有限公司 | Stepped drill bit |
| CN106807986A (en) * | 2016-12-30 | 2017-06-09 | 重庆市鹏舟机械厂 | A kind of awl being easily installed |
| CN109653682A (en) * | 2018-12-17 | 2019-04-19 | 九江职业技术学院 | Bore the adjustable drill bit of diameter and hole digging machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3645640A (en) * | 1970-06-11 | 1972-02-29 | Michael F Zukas | Rotary cutter tool |
| CN2510213Y (en) * | 2001-12-05 | 2002-09-11 | 林健国 | Two-functional drill sleeve structure |
| CN2612485Y (en) * | 2003-04-01 | 2004-04-21 | 郑州泰阳影视光电研究所 | Aiguille |
| CN201735847U (en) * | 2010-07-15 | 2011-02-09 | 蒋建伟 | Multi-functional drill |
| AU2011221402A1 (en) * | 2011-09-09 | 2013-03-28 | Macsim Fastenings Pty Ltd | Drill hole depth limiting device |
| CN203171026U (en) * | 2013-04-19 | 2013-09-04 | 苏州文鼎模具有限公司 | Stepped drill capable of adjusting stepped hole depths |
| CN203936430U (en) * | 2014-07-10 | 2014-11-12 | 遵义长征电器防爆设备有限责任公司 | A kind of adjustable subland drill |
-
2014
- 2014-07-10 CN CN201410326204.4A patent/CN104084625A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3645640A (en) * | 1970-06-11 | 1972-02-29 | Michael F Zukas | Rotary cutter tool |
| CN2510213Y (en) * | 2001-12-05 | 2002-09-11 | 林健国 | Two-functional drill sleeve structure |
| CN2612485Y (en) * | 2003-04-01 | 2004-04-21 | 郑州泰阳影视光电研究所 | Aiguille |
| CN201735847U (en) * | 2010-07-15 | 2011-02-09 | 蒋建伟 | Multi-functional drill |
| AU2011221402A1 (en) * | 2011-09-09 | 2013-03-28 | Macsim Fastenings Pty Ltd | Drill hole depth limiting device |
| CN203171026U (en) * | 2013-04-19 | 2013-09-04 | 苏州文鼎模具有限公司 | Stepped drill capable of adjusting stepped hole depths |
| CN203936430U (en) * | 2014-07-10 | 2014-11-12 | 遵义长征电器防爆设备有限责任公司 | A kind of adjustable subland drill |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551114A (en) * | 2014-12-29 | 2015-04-29 | 苏州用朴合金工具有限公司 | Adjustable combination stepped drill bit |
| CN104625170A (en) * | 2014-12-31 | 2015-05-20 | 苏州欧美克合金工具有限公司 | Stepped drill bit |
| CN106807986A (en) * | 2016-12-30 | 2017-06-09 | 重庆市鹏舟机械厂 | A kind of awl being easily installed |
| CN109653682A (en) * | 2018-12-17 | 2019-04-19 | 九江职业技术学院 | Bore the adjustable drill bit of diameter and hole digging machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |