CN104942345A - Chip-breaking twist drill - Google Patents
Chip-breaking twist drill Download PDFInfo
- Publication number
- CN104942345A CN104942345A CN201410108628.3A CN201410108628A CN104942345A CN 104942345 A CN104942345 A CN 104942345A CN 201410108628 A CN201410108628 A CN 201410108628A CN 104942345 A CN104942345 A CN 104942345A
- Authority
- CN
- China
- Prior art keywords
- chip
- breaking
- cutting edge
- cutting
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/32—Chip breaking or chip evacuation
- B23B2200/321—Chip breaking or chip evacuation by chip breaking projections
Abstract
The invention is a chip-breaking twist drill. The chip-breaking twist drill comprises two cutting edge surfaces and two non-cutting edge trench surfaces of the twist drill, the position of each non-cutting edge trench surface is respectively and additionally provided with symmetrical chip-breaking surfaces, two chip-breaking surfaces are spiral rib surfaces with steps, and inside tail portions of the cutting edge surfaces and the spiral rib surfaces with the steps are provided with step edge surfaces enabling cutting to curl. According to the chip-breaking twist drill, in terms of the design of a drill trench, the non-cutting edge trench surfaces of a drill are additionally provided with the spiral rib surfaces with the steps so that the rigidity of the drill can be improved; chips flow out from a cutting edge and are diverted to the inner side of an edge trench, and the step edge surfaces at the inside tail portions block normal flow of the chips so that the chips curl more tightly, the goal of chip breaking is achieved, chip removal is smooth, and drilling machining is facilitated.
Description
Technical field
The invention belongs to technical field of tools, relate to a kind of fluted drill specifically, especially a kind of make drill bit chip removal more flow process section bits fluted drill.
Background technology
Current standard fluted drill is in usual Drilling operation, the most often occur because chip can not be discharged very well from hole, cooling fluid can not enter cutting zone fast, fully, make fluted drill apex point cutting edge place cut heat sharply to raise, thus cause cutting edge hardness to reduce fast, wearing and tearing aggravation, lose cutting power, serious caused drill bit twists off.
Summary of the invention
In order to solve the problem, the invention provides one and chip removal can be made more smooth, be beneficial to the chip breaking fluted drill reaching chip breaking object of Drilling operation.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
The present invention is a kind of chip breaking fluted drill, comprises two cutting edge faces and two non-cutting flute faces of fluted drill, adds symmetrical filings-breaking surface in the position in each non-cutting flute face respectively.
Further improvement of the present invention is: two filings-breaking surfaces are the spiral finned surface with step.
Further improvement of the present invention is: have in the root of the tail portion, inner side of the spiral finned surface of cutting edge face and step the step faceted pebble making cutting curling.
Further improvement of the present invention is: two have the spiral ribs face of step to be symmetrical arranged.
The invention has the beneficial effects as follows: the present invention is mainly in the design of brill ditch, the spiral finned surface of step is added in drill bit non-cutting flute face, the rigidity of drill bit can be improved, simultaneously due to chip flow out from cutting edge time, point to flow to the inner side of flute, and the step faceted pebble in root of the tail portion, inner side blocks the proper flow of chip, chip curling is obtained tighter, and the object of chip breaking can be reached, thus make chip removal smooth, be beneficial to Drilling operation.
Structure of the present invention is simple, reasonable in design, can not only improve the rigidity of drill bit, chip can also be made tightlyer curling at step faceted pebble place, be beneficial to the processing of boring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1-cutting edge face, 2-non-cutting flute face, 3-with the spiral finned surface of step, 4-step faceted pebble.
Detailed description of the invention
In order to deepen the understanding of the present invention, be described in further detail the present invention below in conjunction with drawings and Examples, this embodiment, only for explaining the present invention, not forming protection scope of the present invention and limiting.
As shown in Fig. 1, the present invention is a kind of chip breaking fluted drill, comprise two cutting edge faces 1 and two non-cutting flute faces 2 of fluted drill, symmetrical filings-breaking surface is added respectively in the position in each described non-cutting flute face 2, two described filings-breaking surfaces are the spiral finned surface 3 with step, having in described cutting edge face 1 and the root of the tail portion, inner side of the spiral finned surface 3 of described step described in the step faceted pebble 4, two making cutting curling has the spiral finned surface 3 of step to be symmetrical arranged.The present invention is mainly in the design of brill ditch, the spiral finned surface of step is added in drill bit non-cutting flute face, the rigidity of drill bit can be improved, simultaneously due to chip flow out from cutting edge time, point to flow to the inner side of flute, and the step faceted pebble in root of the tail portion, inner side blocks the proper flow of chip, chip curling is obtained tighter, and the object of chip breaking can be reached, thus make chip removal smooth, be beneficial to Drilling operation.
Embodiment one
The present invention is a kind of fluted drill of chip breaking, fried dough twist is drilled with two cutting edge faces 1, with two non-cutting flute faces 2, fluted drill of the present invention is provided with the spiral finned surface with step respectively in the position in two symmetrical non-cutting flute faces, spiral finned surface there are two helical curves, the radian of two helical curves is identical, step faceted pebble is defined near between the helical curve and cutting edge of flute, in the process of cutting, chip naturally bends along platform faceted pebble, so just can reach the object of chip breaking, make chip removal more smooth, cooling fluid can be rapidly, enter into cutting zone fully, heat is cut at the apex point cutting edge place of such fluted drill also can not rising sharply, and it is little to wear and tear, drill bit is not easy to twist off.
Structure of the present invention is simple, reasonable in design, can not only improve the rigidity of drill bit, chip can also be made tightlyer curling at step faceted pebble place, be beneficial to the processing of boring.
Claims (3)
1. a chip breaking fluted drill, comprises two cutting edge faces (1) and two non-cutting flute faces (2) of fluted drill, it is characterized in that: add symmetrical filings-breaking surface respectively in the position of each described non-cutting flute face (2).
2. a kind of chip breaking fluted drill according to claim 1, is characterized in that: two described filings-breaking surfaces are the spiral finned surface (3) with step.
3. a kind of chip breaking fluted drill according to claim 2, is characterized in that: have described cutting edge face (1) and the root of the tail portion, inner side of the spiral finned surface (3) of described step the step faceted pebble (4) making cutting curling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108628.3A CN104942345A (en) | 2014-03-24 | 2014-03-24 | Chip-breaking twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108628.3A CN104942345A (en) | 2014-03-24 | 2014-03-24 | Chip-breaking twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104942345A true CN104942345A (en) | 2015-09-30 |
Family
ID=54157700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410108628.3A Pending CN104942345A (en) | 2014-03-24 | 2014-03-24 | Chip-breaking twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104942345A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215434A (en) * | 2015-11-20 | 2016-01-06 | 庄再勇 | Drill bit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0482982A1 (en) * | 1990-10-22 | 1992-04-29 | AEROSPATIALE Société Nationale Industrielle | Device for drilling with improved chip removal |
| CN2663065Y (en) * | 2003-12-24 | 2004-12-15 | 江苏天工工具股份有限公司 | Multifunctional twist-drill |
| CN2850779Y (en) * | 2005-12-30 | 2006-12-27 | 陈�胜 | Rightward rotation drill tip |
| US20070092348A1 (en) * | 2005-10-20 | 2007-04-26 | Durfee Laverne R | Spade bit |
| CN101670459A (en) * | 2008-09-12 | 2010-03-17 | 汤明仙 | Twist drill with small helix angle |
| CN203751397U (en) * | 2014-03-24 | 2014-08-06 | 江苏天工工具有限公司 | Chip breaking twist drill |
-
2014
- 2014-03-24 CN CN201410108628.3A patent/CN104942345A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0482982A1 (en) * | 1990-10-22 | 1992-04-29 | AEROSPATIALE Société Nationale Industrielle | Device for drilling with improved chip removal |
| CN2663065Y (en) * | 2003-12-24 | 2004-12-15 | 江苏天工工具股份有限公司 | Multifunctional twist-drill |
| US20070092348A1 (en) * | 2005-10-20 | 2007-04-26 | Durfee Laverne R | Spade bit |
| CN2850779Y (en) * | 2005-12-30 | 2006-12-27 | 陈�胜 | Rightward rotation drill tip |
| CN101670459A (en) * | 2008-09-12 | 2010-03-17 | 汤明仙 | Twist drill with small helix angle |
| CN203751397U (en) * | 2014-03-24 | 2014-08-06 | 江苏天工工具有限公司 | Chip breaking twist drill |
Non-Patent Citations (1)
| Title |
|---|
| 杨士军: "《CAXA数控车削加工》", 30 April 2006 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215434A (en) * | 2015-11-20 | 2016-01-06 | 庄再勇 | Drill bit |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |