CN202162422U - Step twist drill - Google Patents
Step twist drill Download PDFInfo
- Publication number
- CN202162422U CN202162422U CN2011202152284U CN201120215228U CN202162422U CN 202162422 U CN202162422 U CN 202162422U CN 2011202152284 U CN2011202152284 U CN 2011202152284U CN 201120215228 U CN201120215228 U CN 201120215228U CN 202162422 U CN202162422 U CN 202162422U
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- CN
- China
- Prior art keywords
- rod
- rod body
- stage
- drill
- stages
- 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 relates to a step twist drill adopting an integrated structure, which comprises a drill handle and a twist drill rod body. The step-shaped rod body comprises three stages. The top end of the rod body is a first-stage rod body. A second-stage rod body and a third-stage rod body are coaxially arranged posterior to the first-stage rod body. The diameters of the three stages of rod bodies are successively increased. Each stage of the rod bodies is respectively and evenly equipped with two cutting edges. The front end of the first-stage rod body is equipped with a vertex angle and the vertex angle is arranged to be 120 degrees. The step twist drill is formed by three stages of rod bodies and the three stages of rod bodies are different in diameter so as to form steps. Therefore, the drilling of small holes and the hole reaming of small holes can be performed by only one drill bit. Meanwhile, a step hole can be finished by one shot, which is formed through multiple machining processes in the prior art. The step twist drill is labor-saving and time-saving, which greatly improves the production efficiency.
Description
Technical field
The utility model relates to a kind of aperture knife tool, particularly a kind of fluted drill.
Background technology
Traditional staight shank or taper drill all are a kind of specifications of drill bit, can only bore a kind of hole of aperture, when the needs processing step hole; Will use the fluted drill of two or many different-diameters to accomplish,, change the big drill bit of a diameter again, be expanded into needed aperture to aperture earlier with the little aperture of bit drills of diameter; Stepped hole of processing just needs processing repeatedly like this, and bit change more; Both time-consuming, effort more needs tool setting again in addition during bit change again; Certainly lead to error, make the axiality of stepped hole produce deviation, influence the product precision.
The utility model content
For overcoming above-mentioned technological deficiency, the purpose of the utility model is, a kind of step fluted drill that just can be processed stepped hole by a drill bit one-stop operation is provided.
For realizing above-mentioned purpose, the technical scheme that the utility model technical solution problem adopts is:
A kind of step fluted drill, the structure that is formed in one includes a drillstock, and it also comprises the fluted drill body of rod; The said body of rod is step-like, is divided into three grades, and body of rod top is the one-level body of rod; Coaxial arrangement has the secondary body of rod and three grades of bodies of rod after the one-level body of rod, and diameter increases successively, all evenly is provided with two cutting edges on the bodies of rod at different levels; Wherein, the one-level lever front end has a drift angle, and said drift angle is set to 120 °.
The utility model is made up of three grades of different drilling rods of diameter, forms step, and a drill bit both can get out aperture and reach the reaming to aperture, made and can once accomplish through the stepped hole of repeatedly processing, and was time saving and energy saving, improved production efficiency greatly.
Description of drawings
Fig. 1 is the front view of the utility model step fluted drill;
Fig. 2 is the stereogram of the utility model step fluted drill.
The specific embodiment
Like Fig. 1, shown in Figure 2:
The step fluted drill of present embodiment, the structure that is formed in one includes a drillstock 1, and drillstock 1 front end is connected with a step-like fluted drill body of rod; The said body of rod is divided into three grades, and wherein, the top is the one-level body of rod 2; Coaxial arrangement has the secondary body of rod 3 and three grades of bodies of rod 4 after the one-level body of rod, and diameter increases successively, all evenly is provided with two cutting edges on the bodies of rod at different levels; Wherein, the one-level lever front end has a drift angle 5, and said drift angle is set to 120 °.
The utility model is made up of three grades of different drilling rods of diameter, forms step, and a drill bit both can get out aperture and reach the reaming to aperture, made and can once accomplish through the stepped hole of repeatedly processing, and was time saving and energy saving, improved production efficiency greatly.
Claims (1)
1. step fluted drill, the structure that is formed in one includes a drillstock (1), it is characterized in that; It also comprises the fluted drill body of rod, and the said body of rod is step-like, is divided into three grades, and body of rod top is the one-level body of rod (2); Coaxial arrangement has the secondary body of rod (3) and three grades of bodies of rod (4) after the one-level body of rod, and diameter increases successively, all evenly is provided with two cutting edges on the bodies of rod at different levels; Wherein, the one-level lever front end has a drift angle (5), and said drift angle is set to 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202152284U CN202162422U (en) | 2011-06-23 | 2011-06-23 | Step twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202152284U CN202162422U (en) | 2011-06-23 | 2011-06-23 | Step twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202162422U true CN202162422U (en) | 2012-03-14 |
Family
ID=45798274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202152284U Expired - Fee Related CN202162422U (en) | 2011-06-23 | 2011-06-23 | Step twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202162422U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581355A (en) * | 2012-03-27 | 2012-07-18 | 周安善 | Twist drill for drilling precision holes on high-strength and high-hardness alloy materials |
| CN107498095A (en) * | 2017-09-20 | 2017-12-22 | 江苏天工工具有限公司 | A kind of left-handed three swords milling is bored |
| CN107511512A (en) * | 2017-09-20 | 2017-12-26 | 江苏天工工具有限公司 | A kind of right rotation three-wing bit |
-
2011
- 2011-06-23 CN CN2011202152284U patent/CN202162422U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581355A (en) * | 2012-03-27 | 2012-07-18 | 周安善 | Twist drill for drilling precision holes on high-strength and high-hardness alloy materials |
| CN107498095A (en) * | 2017-09-20 | 2017-12-22 | 江苏天工工具有限公司 | A kind of left-handed three swords milling is bored |
| CN107511512A (en) * | 2017-09-20 | 2017-12-26 | 江苏天工工具有限公司 | A kind of right rotation three-wing bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20120623 |