CN201223962Y - Step chip dividing groove deep hole drill - Google Patents
Step chip dividing groove deep hole drill Download PDFInfo
- Publication number
- CN201223962Y CN201223962Y CNU2008200904665U CN200820090466U CN201223962Y CN 201223962 Y CN201223962 Y CN 201223962Y CN U2008200904665 U CNU2008200904665 U CN U2008200904665U CN 200820090466 U CN200820090466 U CN 200820090466U CN 201223962 Y CN201223962 Y CN 201223962Y
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- China
- Prior art keywords
- deep
- hole drill
- chip
- hole
- drill
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- Expired - Lifetime
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Abstract
A stepped chip-separation slot deep-hole drill relates to a stepped chip-separation slot deep-hole drill used on a radial drill press to process deep holes; the deep-hole drill solves the problems that the NC deep-hole drill press has high cost in processing deep holes on the steam turbine low-pressure pressurizer tube sheets and the ordinary deep-hole dill can not ensure the processing accuracy on the ordinary radial drill press, and the two adjacent holes can be easily penetrated. A tail handle (1) is integrally produced with an aiguille (2); and a chip-separation slot (2-2) and two steps (2-1) are sequentially arranged on the external surface of the aiguille (2) from the top part to the root part. The stepped chip-separation slot deep-hole drill has the advantages of low processing cost and smooth chip separation and can ensure the processing accuracy.
Description
Technical field
The utility model relates to a kind of depth drill, is specifically related to a kind of step portion bits groove depth hole drill that is used in deep hole processing on the radial drilling machine.
Background technology
During processing steam turbine low-pressure pressurizer tube sheet deep hole, because tubesheet holes machining accuracy height, generally all adopt on NC deep hole drilling machine both at home and abroad and process, but numerical control drilling machine costs an arm and a leg, and general machining factory does not all have this special equipment, just becomes a difficult point so will process high-precision deep hole on plain radial drilling machine; On plain radial drilling machine, to adopt the common standard cutter to come processing vapor turbine low-pressure heater high accuracy tube sheet deep hole, because have the hole of φ 16.2 thousands of on the heater tube sheet, machined material is unmanageable low-carbon alloy steel (20CrMn), the aperture reaches 1:16 with the ratio of hole depth, two pitch of holes tolerances are ± 0.5mm, the diameter requirement in hole is 0.15mm/300mm, ovality is not more than 0.05mm, if hole a deflection slightly in the processing, then two holes will penetrate, can't reach the specification requirement of drawing, even the monoblock tube sheet is scrapped.
The utility model content
The purpose of this utility model provides a kind of step portion bits groove depth hole drill, to solve NC deep hole drilling machine processing steam turbine low-pressure pressurizer tube sheet deep hole cost height, the problem that on plain radial drilling machine, penetrates with assurance machining accuracy, adjacent two Kong Yi with common depth drill difficult processing.
The utility model is made up of caudal peduncle and drill bit, and described caudal peduncle and drill bit are made one, is provided with chip dividing groove, two ladders on the outer surface of described drill bit from the top to root successively.
The utlity model has following beneficial effect: depth drill of the present utility model is provided with ladder, the area of cut in the time of can reducing drilling and cutting force, guarantee the linearity of boring, avoid holing the inclination that occurs and adjacent holes is drilled through and scrap, drill bit is provided with chip dividing groove, makes to add the smear metal in man-hour and narrow down the chip removal smoothness, on plain radial drilling machine, just can process high-precision tube sheet deep hole, reduce processing cost.
Description of drawings
Fig. 1 is a front view of the present utility model.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1 present embodiment, present embodiment is made up of caudal peduncle 1 and drill bit 2, and described caudal peduncle 1 and drill bit 2 are made one, is provided with chip dividing groove 2-2, two ladder 2-1 on the outer surface of described drill bit 2 from the top to root successively.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, the larger diameter end width H of the drill bit 2 of present embodiment is 14.5
0 + 0.1Mm.Make processing reach rough machined requirement.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, drill bit 2 front ends of present embodiment to the distance L of caudal peduncle 1 end is 180mm～400mm.Can satisfy different processing requests.Other composition and annexation are identical with the specific embodiment one.
Claims (3)
1, a kind of step portion bits groove depth hole drill, it is made up of caudal peduncle (1) and drill bit (2), and described caudal peduncle (1) and drill bit (2) are made one; It is characterized in that being provided with successively on the outer surface of described drill bit (2) from the top to root chip dividing groove (2-2), two ladders (2-1).
2, step portion bits groove depth hole drill according to claim 1 is characterized in that the larger diameter end width (H) of described drill bit (2) is 14.5
0 + 0.1Mm.
3, step portion bits groove depth hole drill according to claim 1 is characterized in that described drill bit (2) front end to the terminal distance (L) of caudal peduncle (1) is 180mm～400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200904665U CN201223962Y (en) | 2008-07-21 | 2008-07-21 | Step chip dividing groove deep hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200904665U CN201223962Y (en) | 2008-07-21 | 2008-07-21 | Step chip dividing groove deep hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201223962Y true CN201223962Y (en) | 2009-04-22 |
Family
ID=40596840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200904665U Expired - Lifetime CN201223962Y (en) | 2008-07-21 | 2008-07-21 | Step chip dividing groove deep hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201223962Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623769B (en) * | 2009-06-25 | 2010-12-08 | 辽河石油勘探局 | Processing method of porous tube plate of fuel oil steam injection boiler |
| CN102802851A (en) * | 2009-06-11 | 2012-11-28 | 株式会社钨钛合金 | Drilling tool |
| WO2017136966A1 (en) | 2016-02-14 | 2017-08-17 | 上海钰工机电有限公司 | High efficiency step-structured twist drill |
-
2008
- 2008-07-21 CN CNU2008200904665U patent/CN201223962Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802851A (en) * | 2009-06-11 | 2012-11-28 | 株式会社钨钛合金 | Drilling tool |
| CN102802851B (en) * | 2009-06-11 | 2014-11-19 | 株式会社钨钛合金 | Drilling tool |
| CN101623769B (en) * | 2009-06-25 | 2010-12-08 | 辽河石油勘探局 | Processing method of porous tube plate of fuel oil steam injection boiler |
| WO2017136966A1 (en) | 2016-02-14 | 2017-08-17 | 上海钰工机电有限公司 | High efficiency step-structured twist drill |
| EP3305447B1 (en) | 2016-02-14 | 2023-03-29 | Tec-Spiral Enterprises Tools Co., Ltd. | Step-structured twist drill |
| EP4227031A1 (en) * | 2016-02-14 | 2023-08-16 | Tec-Spiral Enterprises Tools Co., Ltd. | High efficiency step-structured twist drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090422 |
|
| CX01 | Expiry of patent term |