CN202491315U - Two-section type percussion bit - Google Patents
Two-section type percussion bit Download PDFInfo
- Publication number
- CN202491315U CN202491315U CN2012201663751U CN201220166375U CN202491315U CN 202491315 U CN202491315 U CN 202491315U CN 2012201663751 U CN2012201663751 U CN 2012201663751U CN 201220166375 U CN201220166375 U CN 201220166375U CN 202491315 U CN202491315 U CN 202491315U
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- Prior art keywords
- cutting
- segment
- drill
- cutting section
- section
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- Expired - Fee Related
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Abstract
The utility model relates to a two-section type percussion bit which is mainly formed by a drill stem. A drill tail in match connection with an electric drill is arranged at the tail portion of the drill stem, and a cutting head is positioned at the front portion of the drill stem. The two-section type percussion bit is characterized in that the drill stem is composed of a first cutting section and a second cutting section, the first cutting section is directly connected with the cutting head, the second cutting section is connected with the drill tail, the diameter of the second cutting section is larger than that of the first cutting section, and coherent chip grooves are arranged on the first cutting section and the second cutting section. Drilling work of step holes can be directly finished in once operation because of two cutting sections of different diameters.
Description
Technical field
The utility model relates to a kind of drilling tool, particularly a kind of drill hammer that is applied to concrete or stone material punching.
Background technology
In building industry, particularly on concrete and stone material, some special securing members often need shoulder hole to cooperate with it.Existing rig once can only get out a kind of aperture through hole or blind hole.Shoulder hole then needs twice boring work could realize, and twice boring or need through one more bit change realization of electric drill, or need be used alternatingly by two drill bits.First method inefficiency, second method have then increased the boring cost.Moreover it is exactly to cause the perpendicularity of shoulder hole to descend easily that twice boring also has a defective, and the center of macropore and aperture is not on same straight line; There are skew or angle; Cause the quality of shoulder hole to descend, securing member finally occurring can't insert smoothly, or defective such as fastening force is not strong.
The utility model content
The purpose of the utility model be provide for the deficiency that solves above-mentioned technology a kind of can be on concrete or stone material the disposable effectively two-part drill hammer that gets out shoulder hole.
In order to achieve the above object, the two-part drill hammer that the utility model designed, its main drilling rod constitutes; The afterbody of drilling rod is the brill tail that is connected with electric drill, and the front portion of drilling rod is a bit, it is characterized in that described drilling rod is made up of first segment of cutting and second segment of cutting; First segment of cutting directly is connected with bit; Second segment of cutting is connected with the brill tail, and the diameter of second segment of cutting is provided with coherent chip area greater than first segment of cutting on first segment of cutting and second segment of cutting.The characteristics of this structure are through two sections diameter distinct cutting sections, directly reach the boring work that shoulder hole is accomplished in once-through operation.
In order to improve the drilling efficiency of second segment of cutting, pass through conical surface transition between described first segment of cutting and second segment of cutting.Can improve second segment of cutting boring smooth degree when being contacted first through the conical surface by drilling area.
The resulting two-part drill hammer of the utility model, through first segment of cutting and second segment of cutting that diameter differs is set on drilling rod, the once boring work that reaches can bore the purpose of shoulder hole.Owing to can locate drill bit effectively after first segment of cutting pierces drilled object inside, and, make second segment of cutting to pierce in the drilled object easily through the smooth and easy transition of the conical surface.Through the resulting shoulder hole of this drill bit, its big or small two centerline holes remain on the same straight line, have improved the quality of shoulder hole and the drilling efficiency of shoulder hole greatly.
Description of drawings
Fig. 1 is the front view of the utility model.
The specific embodiment
Combine accompanying drawing that the utility model is done further to describe through embodiment below.
Embodiment 1:
As shown in Figure 1; The two-part drill hammer that the utility model designed that present embodiment is described, its main drilling rod 1 constitutes, and the afterbody of drilling rod 1 is the brill tail 2 that is connected with electric drill; The front portion of drilling rod 1 is a bit 3; Described drilling rod 1 is made up of first segment of cutting 4 and second segment of cutting 5, and first segment of cutting 4 directly is connected with bit 3, and second segment of cutting 5 is connected with brill tail 2; And the diameter of second segment of cutting 5 is provided with coherent chip area 6 greater than first segment of cutting 4 on first segment of cutting 4 and second segment of cutting 5.Pass through the conical surface 7 transition simultaneously between described first segment of cutting 4 and second segment of cutting 5.Simultaneously, because the diameter difference between first segment of cutting 4 and second segment of cutting 5 also can directly be passed through the step surface transition apart from less between two sections segment of cutting.
This two-part drill hammer can disposable year directly gets out shoulder hole on stone material or the concrete, cooperates with special securing member, cooperates with special shoulder hole but also not only limit to.Under the thin situation of drilled object, the consistent through hole of diameter before and after also being used to bore.And bore to such an extent that shoulder hole can certainly directly cooperate with general securing member, only need the diameter of securing member to cooperate and get final product with second segment of cutting, 5 diameters of this two-part drill hammer.
Claims (2)
1. two-part drill hammer, its main drilling rod constitutes, and the afterbody of drilling rod is the brill tail that is connected with electric drill; The front portion of drilling rod is a bit; It is characterized in that described drilling rod is made up of first segment of cutting and second segment of cutting, first segment of cutting directly is connected with bit, second segment of cutting with bore tail and be connected; And the diameter of second segment of cutting is provided with coherent chip area greater than first segment of cutting on first segment of cutting and second segment of cutting.
2. according to claim two-part drill hammer, it is characterized in that passing through conical surface transition between described first segment of cutting and second segment of cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201663751U CN202491315U (en) | 2012-04-17 | 2012-04-17 | Two-section type percussion bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201663751U CN202491315U (en) | 2012-04-17 | 2012-04-17 | Two-section type percussion bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202491315U true CN202491315U (en) | 2012-10-17 |
Family
ID=46997554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201663751U Expired - Fee Related CN202491315U (en) | 2012-04-17 | 2012-04-17 | Two-section type percussion bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202491315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859704A (en) * | 2016-09-21 | 2018-03-30 | 保时捷股份公司 | Inner ventilation type brake disc |
-
2012
- 2012-04-17 CN CN2012201663751U patent/CN202491315U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859704A (en) * | 2016-09-21 | 2018-03-30 | 保时捷股份公司 | Inner ventilation type brake disc |
| CN107859704B (en) * | 2016-09-21 | 2020-04-21 | 保时捷股份公司 | Internally ventilated brake disc |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20180417 |