CN202726128U - Drill used for small hole drilling - Google Patents
Drill used for small hole drilling Download PDFInfo
- Publication number
- CN202726128U CN202726128U CN2012202659325U CN201220265932U CN202726128U CN 202726128 U CN202726128 U CN 202726128U CN 2012202659325 U CN2012202659325 U CN 2012202659325U CN 201220265932 U CN201220265932 U CN 201220265932U CN 202726128 U CN202726128 U CN 202726128U
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- China
- Prior art keywords
- drill bit
- spring
- bit
- drillstock
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a drill used for small hole drilling. The drill used for the small hole drilling comprises a drillstock, wherein a drill bit is fixed on the drillstock through screws, bit edges are arranged on two sides of the drill bit, and the surface roughness of the bit edges is arithmetical mean deviation of the profile Ra 0.8 micrometer. The top end of the drill bit is a cutting edge after quenching treatment. A spring is arranged by penetrating the hollow drill bit, wherein one end of the spring is fixed on the drillstock, and a baffle is fixedly arranged on the other end of the spring. The length of the baffle is smaller than the diameter of the hollow drill bit, and the length of the spring is smaller than the length of the hollow drill bit. Due to the fact that the cutting edge of the drill bit is after the quenching treatment, the service life is prolonged. The sharpness of the drill bit increases when the roughness decreases. The baffle with the spring is arranged inside the hollow drill bit, fragments press the spring to enter the hollow drill bit in a drilling process, and when the hollow drill bit is picked up, the fragment are ejected automatically by the spring, and therefore simpleness and convenience are achieved, and inconvenience to the machining process in work caused by the fragment is avoided. The drill used for the small hole drilling is simple in structure, convenient to manufacture, and long in service life.
Description
Technical field
The utility model relates to a kind of drill bit, specifically a kind of brill aperture drill bit.
Background technology
As everyone knows, drill bit is to go out through hole or blind hole in order to drilling on solid material, and can be to the instrument of existing hole reaming, drill bit commonly used is mainly by fluted drill, chit drill, centre drill, depth drill and cylindrical drill, and for boring different workpiece, and just need a kind of special drill bit when boring some as the softer thing such as flexible glue skin, soft plastic cloth.
Summary of the invention
In order to address the above problem, the utility model provides a kind of good drill bit, and this drill bit can also be with boring flexible glue skin etc.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
The utility model is a kind of brill aperture drill bit, comprises drillstock, and drillstock is fixed with drill bit by screw, and the both sides of drill bit are drill lip, and the drill lip surface roughness is than profile arithmetic average difference Ra0.8 μ m, and the top of drill bit is the cutting edge through quenching.Pass hollow boring bit one spring is set, an end of spring is fixed on the drillstock, and the other end of spring is fixedly installed a baffle plate.
Further improvement of the utility model is: the length of baffle plate is less than the diameter of hollow boring bit, and the length of spring is less than the length of hollow boring bit.
Further improvement of the utility model is: drill bit adopts 45 steel or tool steel, alloy tool steel making.
The beneficial effects of the utility model are: the cutting edge of drill bit of the present utility model is through quenching, improved service life, roughness is less, and drill bit is sharper, and a baffle plate with spring is set in hollow boring bit, when drilling, chip can enter hollow boring bit by Compress Spring, and when picking up hollow boring bit, spring is with the chip automatic spring, simple and convenient, in case when work chip processing is brought inconvenience.
The utility model is simple in structure, and is easy to make, and service time is long.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1-drillstock, 2-screw, 3-drill bit, 4-drill lip, 5-cutting edge.
The specific embodiment
In order to deepen understanding of the present utility model, the utility model is done describing in further detail below in conjunction with drawings and Examples, this embodiment only is used for explaining the utility model, protection domain of the present utility model is not consisted of to limit.
Shown in Fig. 1, the utility model is a kind of brill aperture drill bit, comprise drillstock 1, described drillstock 1 is fixed with drill bit 3 by screw 2, the both sides of described drill bit 3 are drill lip 4, described drill lip 4 surface roughnesses are less than profile arithmetic average difference Ra 0.8 μ m, the top of described drill bit is the cutting edge 5 through quenching, described drill bit 3 adopts 45 steel or tool steel, the alloy tool steel making, pass described hollow boring bit 3 spring 6 is set, one end of described spring 6 is fixed on the described drillstock 1, and the other end of described spring 6 is fixedly installed a baffle plate 7, and the length of described baffle plate 7 is less than the diameter of described hollow boring bit 3, the length of described spring 6 is less than the length of described hollow boring bit 3, one baffle plate with spring is set in hollow boring bit, and when drilling, chip can enter hollow boring bit by Compress Spring, when picking up hollow boring bit, spring is with the chip automatic spring, and is simple and convenient, in case when work chip processing is brought inconvenience.
The cutting edge of drill bit of the present utility model has improved service life through quenching, and roughness is less, and drill bit is sharper.The utility model is simple in structure, and is easy to make, and service time is long.
Claims (3)
1. one kind is bored the aperture drill bit, comprise drillstock (1), described drillstock (1) is fixed with hollow boring bit (3) by screw (2), it is characterized in that: the both sides of described hollow boring bit (3) are drill lip (4), described drill lip (4) surface roughness is than profile arithmetic average difference Ra0.8 μ m, the top of described hollow boring bit (3) is the cutting edge (5) through quenching, pass described hollow boring bit (3) spring (6) is set, one end of described spring (6) is fixed on the described drillstock (1), and the other end of described spring (6) is fixedly installed a baffle plate (7).
2. described a kind of brill aperture drill bit according to claim 1, it is characterized in that: the length of described baffle plate (7) is less than the diameter of described hollow boring bit (3), and the length of described spring (6) is less than the length of described hollow boring bit (3).
3. described a kind of brill aperture drill bit according to claim 1 and 2 is characterized in that: described hollow boring bit (3) adopts 45 steel or tool steel, alloy tool steel making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202659325U CN202726128U (en) | 2012-06-07 | 2012-06-07 | Drill used for small hole drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202659325U CN202726128U (en) | 2012-06-07 | 2012-06-07 | Drill used for small hole drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202726128U true CN202726128U (en) | 2013-02-13 |
Family
ID=47651877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202659325U Expired - Fee Related CN202726128U (en) | 2012-06-07 | 2012-06-07 | Drill used for small hole drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202726128U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717125A (en) * | 2012-06-07 | 2012-10-10 | 江苏天工工具有限公司 | Drill bit for drilling small hole |
| CN111266633A (en) * | 2020-03-05 | 2020-06-12 | 重庆铭武机电有限公司 | Anti-abrasion inner hole machining drill bit used in shaft sleeve machining process |
| CN111843593A (en) * | 2020-07-25 | 2020-10-30 | 广州优易机械科技有限公司 | Improved numerically controlled lathe |
-
2012
- 2012-06-07 CN CN2012202659325U patent/CN202726128U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717125A (en) * | 2012-06-07 | 2012-10-10 | 江苏天工工具有限公司 | Drill bit for drilling small hole |
| CN111266633A (en) * | 2020-03-05 | 2020-06-12 | 重庆铭武机电有限公司 | Anti-abrasion inner hole machining drill bit used in shaft sleeve machining process |
| CN111843593A (en) * | 2020-07-25 | 2020-10-30 | 广州优易机械科技有限公司 | Improved numerically controlled lathe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150607 |
|
| EXPY | Termination of patent right or utility model |