CN2218618Y - Hollow drill bit for central sampling - Google Patents
Hollow drill bit for central sampling Download PDFInfo
- Publication number
- CN2218618Y CN2218618Y CN 94231542 CN94231542U CN2218618Y CN 2218618 Y CN2218618 Y CN 2218618Y CN 94231542 CN94231542 CN 94231542 CN 94231542 U CN94231542 U CN 94231542U CN 2218618 Y CN2218618 Y CN 2218618Y
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- Prior art keywords
- edges
- sampling
- drill
- bit
- cutting
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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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- Sampling And Sample Adjustment (AREA)
- Earth Drilling (AREA)
Abstract
Test standards of the mechanical properties and the physical properties of metal material require samples which are sampled at the one half part of the radius of the metal material. The utility model provides a hollow boring bit for drilling and sampling the central samples. The cutting part of the drill bit is composed of four cutting edges, wherein, each cutting edge is provided with main leading edges and straight side edges, which are mutually perpendicular. Backs of the edges forms arc shapes. The main leading edges are grinded into a grouped drill form. At the circumference of a center hole, the root part of every main leading edge is provided with a liquid feeding groove used for supplying cooling liquid to the cutting edges. Drilling chips and the cooling liquid are discharged from gaps among the knife edges. The hollow boring bit can once accomplish the central sampling and has the characteristics of high work efficiency and low labor strength.
Description
The utility model belongs to the machining utensil, particularly the sampling core hollow boring bit.
Metal material carries out mechanical performance and the physical property check need drill through the center sample with hollow boring bit.According to standard code, sampling point must be located at the radius of blank.Present used core drill must expose a part of blade and be used for chip removal when drilling through test rod.When therefore round blank more than processing φ 180mm or catercorner length surpass the polygonal blank of 180mm,, then must inwardly arrange sampling successively, after repeatedly drilling through repeatedly, just can get into the radius by the blank outside as finishing the sampling of radius.Blank is big more, and the required number of times that drills through is just many more.The sample of being got during beginning is not needed, has therefore wasted a large amount of human and material resources and time.
Application number 87200122 discloses a kind of treapanning drill.This drill bit has a centre bore, and its front portion is a bellmouth, and the rear portion is a straight hole, and 2 location points of a knife, 2 interior wiper edges are arranged at the cutting position, is used to locate and sample that smoothing drills through, is mainly used in the weld seam sampling, is not suitable for sampling core.
Application number 88204331 discloses a kind of large-sized iron casting sampling core drill, boring tooth by fried dough twist screw thread, drill bit hollow space, drill bit end is formed, in the structure of the core drill outer wall fried dough twist screw thread of hollow space bottom, on around the drill bit of same vertical plane at a distance of 120 ° of holes that 3 φ 3mm are arranged, communicate with the drill bit hollow space, be used for exhaust, gang drill bits.This drill bit is mainly used in the large-sized iron casting sampling, does not get the center sample but be suitable for.
The purpose of this utility model provides a kind of hollow boring bit that has four blades and comes the disposable task of finishing sampling core: each blade has a main front edge and perpendicular front sword.
Another purpose of the present utility model provides a kind of hollow boring bit that has supply flume, can discharge cooling fluid and iron filings glibly.
Another purpose of the present utility model is to increase work efficiency, and reduces labor intensity, and shortens the sampling core time.
According to sampling core hollow boring bit of the present utility model, its blade is made up of 4 blades, and each blade is made up of main front edge and front sword, and main front edge is worn into the Ni Zhifu drill form, makes drilling cuttings tiny as far as possible, and the front sword is used for locating and is directed.Space between each blade is in order to gang drill bits and cooling fluid.
According to the utility model, each main front edge root is provided with supply flume on the centre bore circumference, is used for to the drill supply cooling fluid.
According to the utility model, be provided with the set screw hole in brill tail side, afterbody is provided with end pin, is used for drill bit is fixed to drilling rod.
When adopting sampling core hollow boring bit of the present utility model to take a sample, get out a looping pit by main front edge, the front sword is used for location and guiding, guarantees that drill bit is along straight ahead.Supply with cooling fluid by feed tank to drill bit, cooling fluid refluxes and drilling cuttings is discharged smoothly by the space between the blade, and after looping pit penetrated blank, sample just can take out in centre bore.
Therefore, according to the utility model, can realize the disposable sampling core of finishing.Drill through in the process of sample, drill bit is subjected to abundant cooling, and cooling fluid and drilling cuttings can be discharged glibly, thereby has improved sample rate, has reduced labour intensity, has shortened the production cycle,
Below in conjunction with accompanying drawing the utility model is elaborated.
Fig. 1 is a sampling core hollow boring bit side view of the present utility model.
Fig. 2 is the end-view of the utility model sampling core hollow boring bit.
As depicted in figs. 1 and 2, the blade of hollow boring bit of the present utility model is made up of 4 blades (1), and each blade has a main front edge (2) and front sword (3), and both are vertical mutually, and main front edge is worn into the Ni Zhifu drill form, and the knife back (4) is curved.The side of boring tail (5) is provided with set screw hole (6), and the termination of boring tail (5) is provided with end pin (7), is used for hollow boring bit is fixed to hollow drill.
As shown in Figure 2, the periphery in centre bore (9), each main front edge (2) heel place is provided with feed tank (8), is used for providing cooling fluid to blade.
Because main front edge wears into the Ni Zhifu drill form, so drilling cuttings is very tiny, easily with cooling fluid by successfully flowing out between each blade owing to be provided with the front sword, can be used to location and guiding, so the sample that is taken out is the circular specimen of standard.
When using the utility model to drill through the center sample, as long as with the drill bit sampling point, connect the cooling fluid pipeline, start rig, can drill through the center sample.
Claims (1)
1, a kind of sampling core hollow boring bit that has centre bore (9) and bore tail (5), the blade that it is characterized in that drill bit is made up of 4 blades (1), each blade has a main front edge (2) and front sword (3), both are vertical mutually, the knife back (4) is curved, the side of boring tail (5) is provided with set screw hole (6), the end is provided with tail (7) slightly, the periphery of centre bore (9), and the heel of each main front edge (2) is provided with feed tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231542 CN2218618Y (en) | 1994-12-17 | 1994-12-17 | Hollow drill bit for central sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231542 CN2218618Y (en) | 1994-12-17 | 1994-12-17 | Hollow drill bit for central sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2218618Y true CN2218618Y (en) | 1996-01-31 |
Family
ID=33843360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94231542 Expired - Fee Related CN2218618Y (en) | 1994-12-17 | 1994-12-17 | Hollow drill bit for central sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2218618Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858831A (en) * | 2010-03-22 | 2010-10-13 | 马鞍山钢铁股份有限公司 | Sampling method of analytical samples for hydrogen content of steel billets |
| CN104159522A (en) * | 2013-01-16 | 2014-11-19 | 奥林巴斯医疗株式会社 | Ultrasound probe system |
| CN104148710A (en) * | 2014-08-07 | 2014-11-19 | 西安近代化学研究所 | Cutter for contour machining of small cylinders |
-
1994
- 1994-12-17 CN CN 94231542 patent/CN2218618Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858831A (en) * | 2010-03-22 | 2010-10-13 | 马鞍山钢铁股份有限公司 | Sampling method of analytical samples for hydrogen content of steel billets |
| CN101858831B (en) * | 2010-03-22 | 2012-05-30 | 马鞍山钢铁股份有限公司 | Sampling method of analytical samples for hydrogen content of steel billets |
| CN104159522A (en) * | 2013-01-16 | 2014-11-19 | 奥林巴斯医疗株式会社 | Ultrasound probe system |
| CN104159522B (en) * | 2013-01-16 | 2016-03-09 | 奥林巴斯株式会社 | Ultrasound probe system |
| CN104148710A (en) * | 2014-08-07 | 2014-11-19 | 西安近代化学研究所 | Cutter for contour machining of small cylinders |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |