CN104551104A - Step micro-bit - Google Patents
Step micro-bit Download PDFInfo
- Publication number
- CN104551104A CN104551104A CN201310486318.0A CN201310486318A CN104551104A CN 104551104 A CN104551104 A CN 104551104A CN 201310486318 A CN201310486318 A CN 201310486318A CN 104551104 A CN104551104 A CN 104551104A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- drilling portion
- shank
- bit
- taper seat
- 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
- B23B51/009—Stepped drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/04—Angles, e.g. cutting angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/011—Micro drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention belongs to the field of cutting tools and particularly relates to a step micro-bit for secondary machining of a bottom hole of a stepped hole. The step micro-bit comprises a shank connected with a cutting power unit; the step micro-bit is characterized in that a connecting rod is disposed at the front end of the shank, the connecting rod is provided with a drilling portion, the surface of the drilling portion is provided with a spiral cutting edge, the cutting portion is 4.5 mm to 5 mm in length, a connection of the connecting rod and the shank is provided with a first conical face, a connection of the connecting rod and the drilling portion is provided with a second conical face, and each conical face is 42 degrees angled to the axis of the shank. The connecting rod allows the drilling portion to be shorter, rigidity of a whole tool is effectively improved, the tool is effectively avoided deflecting during high-speed rotation, machining precision is improved, and production needs are met.
Description
Technical field
The invention belongs to cutting tool field, particularly a kind of stepped hole base apertures carries out the step microbit of secondary operations.
Background technology
Existing step microbit comprises the drillstock for clamping and the drill point for grinding boring, in the process of reality, because the length of drill point is longer, under high-speed rotation, easily there is beat in the drill point position of drill bit, causes the quality in the hole processed cannot meet the requirement of design.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, the present invention devises and is a kind ofly applicable to the min-cutter that stepped hole base apertures carries out secondary operations.
The present invention is achieved through the following technical solutions:
Step microbit, it comprises the handle of a knife be connected with cutting power set, it is characterized in that: the front end of described handle of a knife is provided with connecting rod, connecting rod is connected with drilling portion, the surface in described drilling portion is provided with spiral cutting sword, the length in described drilling portion is between 4.5 ~ 5mm, described connecting rod and handle of a knife junction are provided with the first taper seat, the junction in connecting rod and drilling portion is provided with the second taper seat, and the first described taper seat and the angle of the second taper seat and handle of a knife axis are 42 °.
Further, the top angle in described drilling portion is 115 ° to 125 °.
The connecting rod of the present invention's design shortens the length in drilling portion, effectively improve the rigidity of whole cutter, overcome the generation of cutter beat phenomenon under High Rotation Speed, improve the precision of processing, meet need of production, the first taper seat simultaneously arranged and the second taper seat have a position-limiting action, prevent the effect that working depth is excessive.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present invention will become apparent.Wherein:
Figure 1 shows that structural representation of the present invention;
In figure, 1 is drilling portion, and 2 is the second taper seat, and 3 is connecting rod, and 4 is the first taper seat, and 5 is handle of a knife.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Step microbit as shown in Figure 1, it comprises the handle of a knife 5 be connected with cutting power set, it is characterized in that: the front end of described handle of a knife 5 is provided with connecting rod 3, connecting rod 3 is connected with drilling portion 1, the surface in described drilling portion 1 is provided with spiral cutting sword, the length in described drilling portion 1 is between 4.5 ~ 5mm, preferably 4.5mm, described connecting rod 3 is provided with the first taper seat 4 with handle of a knife 5 junction, connecting rod 3 is provided with the second taper seat 2 with the junction in drilling portion 1, the first described taper seat 4 and the second taper seat 2 are 42 ° with the angle of handle of a knife axis.
Further, the top angle in described drilling portion 1 is 115 ° to 125 °.
The connecting rod of the present invention's design shortens the length in drilling portion, effectively improve the rigidity of whole cutter, overcome the generation of cutter beat phenomenon under High Rotation Speed, improve the precision of processing, meet need of production, the first taper seat simultaneously arranged and the second taper seat have a position-limiting action, prevent the effect that working depth is excessive.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention namely openly in scope, still can do some and revise or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (2)
1. step microbit, it comprises the handle of a knife be connected with cutting power set, it is characterized in that: the front end of described handle of a knife is provided with connecting rod, connecting rod is connected with drilling portion, the surface in described drilling portion is provided with spiral cutting sword, the length in described drilling portion is between 4.5 ~ 5mm, described connecting rod and handle of a knife junction are provided with the first taper seat, the junction in connecting rod and drilling portion is provided with the second taper seat, and the first described taper seat and the angle of the second taper seat and handle of a knife axis are 42 °.
2. step microbit according to claim 1, is characterized in that: the top angle in described drilling portion is 115 ° to 125 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486318.0A CN104551104A (en) | 2013-10-17 | 2013-10-17 | Step micro-bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486318.0A CN104551104A (en) | 2013-10-17 | 2013-10-17 | Step micro-bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104551104A true CN104551104A (en) | 2015-04-29 |
Family
ID=53068759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310486318.0A Pending CN104551104A (en) | 2013-10-17 | 2013-10-17 | Step micro-bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104551104A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020115301A1 (en) * | 2018-12-06 | 2020-06-11 | Ruko Gmbh Praezisionswerkzeuge | Step drill |
| CN114042970A (en) * | 2021-10-27 | 2022-02-15 | 南阳鼎泰高科有限公司 | PCB cutter and preparation method thereof |
| CN114211630A (en) * | 2021-12-03 | 2022-03-22 | 锦州神工半导体股份有限公司 | Processing method of silicon part air holes |
-
2013
- 2013-10-17 CN CN201310486318.0A patent/CN104551104A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020115301A1 (en) * | 2018-12-06 | 2020-06-11 | Ruko Gmbh Praezisionswerkzeuge | Step drill |
| CN114042970A (en) * | 2021-10-27 | 2022-02-15 | 南阳鼎泰高科有限公司 | PCB cutter and preparation method thereof |
| CN114211630A (en) * | 2021-12-03 | 2022-03-22 | 锦州神工半导体股份有限公司 | Processing method of silicon part air holes |
| CN114211630B (en) * | 2021-12-03 | 2024-01-26 | 锦州精合半导体有限公司 | Processing method of air holes of silicon part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |