KR970025807A - Centered Single Edge Drill - Google Patents
Centered Single Edge Drill Download PDFInfo
- Publication number
- KR970025807A KR970025807A KR1019950039810A KR19950039810A KR970025807A KR 970025807 A KR970025807 A KR 970025807A KR 1019950039810 A KR1019950039810 A KR 1019950039810A KR 19950039810 A KR19950039810 A KR 19950039810A KR 970025807 A KR970025807 A KR 970025807A
- Authority
- KR
- South Korea
- Prior art keywords
- drill
- blades
- hole
- center
- drilling
- Prior art date
Links
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- Drilling Tools (AREA)
Abstract
본 발명의 목적은 모든 철 구조물을 제작할때 드릴로 구멍을 뚫어서 조립하는 부분이 많은데 종래 사용하고 있는 드릴은 그라인더에 날을 갈때 정확한 중심을 돌출 시키기 어렵기 때문에 정확한 위치에 홀이 잘 뚫어지지 않으며 날이 두개인데 양날의 높이를 똑같이 갈기가 어려워서 홀을 가공할때 날이 높은 부분은 절삭이 되고 날이 낮은 부분은 절삭이 안되고 철과 드릴날이 마찰만 되어 열을 발생하게 되므로 날이 빨리 마모되며 지름이 약 15MM 이상의 홀을 가공할때는 지름이 큰 드릴은 중심 부분이 절삭이 잘 안되기 때문에 처음이 적은 드릴로 뚫고 난후 다시 큰 드릴로 뚫어야 되므로 비능률적이다.The purpose of the present invention is to make a lot of parts to assemble a hole by drilling when manufacturing all the steel structure, the conventional drill is difficult to protrude the exact center when grinding the blade in the grinder, so that the hole is not drilled well in the correct position It is difficult to grind the height of the two blades equally, so when cutting holes, the parts with high blades are cut, the parts with low blades are not cut, and only the friction between iron and drill blades generates heat, so the blades wear out quickly. When drilling a hole with a diameter of about 15MM or more, the large diameter drill is inefficient because the center part is not cut well, and the first drill is required after drilling with the smallest drill.
이런 문제점들을 해결하기 위한 본 발명의 구성원리는 드릴밥이 나오는 홈은 나선형으로 되어 있어도 돌출된 중심부분은 정확히 수직으로 형성되어 있으며 드릴 중심이 정확해야 홀을 정밀하게 가공할 수 있으므로 본 발명은 드릴을 생산할때 정확한 중심을 돌출시켜 놓았으므로 0.1MM의 오차도 없이 각이 가공되며 드릴날이 하나뿐 이므로 마찰을 시켜 열을 발생시키는 부분임이 절삭이 잘 되며 약 100MM지름의 홀도 두번 뚫을 필요없이 한번에 홀 가공이 잘 되므로 작업 능률을 많이 올린 수 있고 정밀한 철 구조물을 제작할 수 있는 외날 드릴이다.The member of the present invention for solving these problems, even though the grooves from which the drill bob comes out is spiral, the protruding center portion is formed exactly vertically, and the drill center must be accurate so that the hole can be precisely machined. Since the center is extruded precisely when producing, the angle is machined without any error of 0.1MM. Since there is only one drill blade, it is a part that generates heat by rubbing, and the cutting is well done. It is a single-blade drill that can improve work efficiency and manufacture precise steel structure because of good hole processing.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명의 사시도,1 is a perspective view of the present invention,
제2도는 본 발명의 A-A 단면도.2 is a cross-sectional view A-A of the present invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950039810A KR970025807A (en) | 1995-11-05 | 1995-11-05 | Centered Single Edge Drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950039810A KR970025807A (en) | 1995-11-05 | 1995-11-05 | Centered Single Edge Drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR970025807A true KR970025807A (en) | 1997-06-24 |
Family
ID=66587456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950039810A KR970025807A (en) | 1995-11-05 | 1995-11-05 | Centered Single Edge Drill |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970025807A (en) |
-
1995
- 1995-11-05 KR KR1019950039810A patent/KR970025807A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| SUBM | Submission of document of abandonment before or after decision of registration |