CN104816023A - Hard alloy nonstandard step drill - Google Patents
Hard alloy nonstandard step drill Download PDFInfo
- Publication number
- CN104816023A CN104816023A CN201510276718.8A CN201510276718A CN104816023A CN 104816023 A CN104816023 A CN 104816023A CN 201510276718 A CN201510276718 A CN 201510276718A CN 104816023 A CN104816023 A CN 104816023A
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- CN
- China
- Prior art keywords
- drill body
- drill
- bite
- groove
- shape
- 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
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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
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a hard alloy nonstandard step drill, which is composed of a drill bit, a drill handle and a drill body sequentially connected, and has the innovation that the drill bit is conical in shape; the drill body is composed of a drill body front end portion and a drill body rear end portion and integrally formed; the drill handle is a thin and long cylinder, positioning grooves are arranged at the position, close to the end portion, of one end of the drill handle. According to the drill provided by the invention, the front cutting knife, the S-shaped auxiliary cutting knives and a chip removal structure are effectively combined, so that three-stage drilling is achieved, shaping is performed at a time, chips are removed smoothly, and the smooth cutting surface of a drilled holes is achieved.
Description
Technical field
The invention belongs to drill bit field, particularly relate to the nonstandard Step drill of a kind of carbide alloy.
Background technology
Cutter on brill, drilling machine, drilling machine, can cause hole on workpiece or rock.Xu Chi " Goldbach's Conjecture's oil head ": " in 1956, China's bored material was somewhat nervous, and drill bit is not enough." course of work dig pit operation time, drill bit, with vertical shaft rotary, moves axially simultaneously.Soil is cut under the moment of torsion and responsive to axial force of drill bit, is raveled under the extruding and centrifugal action of working-blade, forms native stream and presses to hole wall, simultaneously along page elevator to earth's surface.When native stream moves to without hole wall stop place, because centrifugal action hack is thrown around hole, complete the process of digging pit.
The aperture of the boring that present market is common is of a size, and this has also just been doomed a boring can only bore the hole in an aperture, if want the hole drilling through different-diameter size, will select multiple different drill bit, and add working time, reduce operating efficiency.
Some company also develops subland drill now, but its apex point selected mostly is circular, is not easy to the boring of stiffening object, brings certain inconvenience to drilling technique.
Summary of the invention
The technical problem to be solved in the present invention be a drill bit can only drill through a size aperture and row cut obstructed.
For solving the problems of the technologies described above, the invention provides following technical scheme: the nonstandard Step drill of a kind of carbide alloy, by apex point, drillstock and drill body three part connect and compose, it is characterized in that: the structure of described drill body is made up of drill body head portion and drill body rearward end two parts monolithic molding; The structure of described drillstock is slender cylinder, in one end of drillstock, is provided with positioning groove near end position; The structure of described apex point is conical.
Further, the ∞ font body of the structure in described drill body head portion to be two ends be straight end face, described drill body head portion is provided with horizontally disposed S shape bite along ∞ font position, described S shape bite and drill body head portion are monolithic molding, and described S shape bite blade and described drill body head portion horizontal axis angle are 30 ~ 45 °.
Further, the ∞ font body of the structure of described drill body rearward end to be two ends be straight end face, described drill body rearward end is provided with the secondary bite of horizontally disposed S shape along ∞ font position, the secondary bite of described S shape and drill body rearward end are monolithic molding, and the secondary bite blade of described S shape and described drill body rearward end horizontal axis angle are 15 ~ 30 °.
Further, described apex point front end offers front bite, and described front bite and horizontal axis angle are 15 ~ 45 °.
Further, described drill body also includes two groove for cuttings, described groove for cuttings extends to bottom from the start-up portion in drill body head portion in a helical pattern, on arbitrary cross section of drill body, groove for cuttings is all positioned at position diametrically opposed to each other in drill body plane, and drill body is divided into four parts by described two groove for cuttings uniformly.
Further, described positioning groove is the groove of two the semicircle strips offered along cylinder drillstock periphery.
Beneficial effect of the present invention is as follows:
1, by front bite, the secondary bite of S shape and the secondary bite of S shape, this three effectively combines cutter and chip discharging structure drill bit of the present invention, realizes three grades of borings, once-forming, and chip removal is unobstructed, and realization is holed the smooth of cutting face;
2, apex point of the present invention, drill body head portion and drill body rearward end combine, and can realize three grades of borings, once-forming, the smooth of cutting face of holing, and can ensure again the stable of the structure of drill body body;
3, drill bit of the present invention is provided with two groove for cuttings on drill body, described two groove for cuttings extend to bottom from drill body head in a helical pattern, along on arbitrary cross section of drill body, groove for cuttings is all positioned at position diametrically opposed to each other in drill body plane, the groove for cuttings of this symmetric figure, and row's bevel is long-pending large, it is fast that row cuts speed, not easily causes broken accumulation of cutting;
4, have the groove of two the semicircle strips offered along cylinder drillstock periphery outside drillstock of the present invention, such groove design serves fastening effect, Embedded drillstock, effectively can prevent drill bit landing from install machinery;
5, bite before drill bit of the present invention adopts, S shape bite and the secondary bite of S shape are worked in coordination, and accelerate cutting speed, ensure that the fineness in cutting face.
Accompanying drawing explanation
If Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Drawing reference numeral: 1, front bite, 2, row cuts groove, 3, drill body head portion, 4, S shape bite, 5, drill body rearward end, 6, the secondary bite of S shape, 7, positioning groove, 8, drillstock, 9, apex point
For making goal of the invention of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
As shown in Figure 1, the nonstandard Step drill of a kind of carbide alloy, is connected and composed by apex point 9, drillstock 8 and drill body three part, it is characterized in that the structure of the nonstandard Step drill of carbide alloy of the present invention: the structure of apex point 9 is for conical; The structure of drill body is made up of drill body head portion 3 and drill body rearward end 5 two parts monolithic molding; The structure of drillstock 8 is slender cylinder, in one end of drillstock 8, is provided with positioning groove 7 near end position; Positioning groove 7 is the groove of two the semicircle strips offered along cylinder drillstock 8 periphery, and such groove design serves fastening effect, Embedded drillstock 8, effectively can prevent drill bit landing from install machinery.
The ∞ font body of the structure in drill body head portion 3 to be two ends be straight end face, drill body head portion 3 is provided with horizontally disposed S shape bite 4 along ∞ font position, S shape bite 4 and drill body head portion 3 are monolithic molding, and S shape bite 4 blade and drill body head portion 4 horizontal axis angle are 30 ~ 45 °; The ∞ font body of the structure of drill body rearward end 5 to be two ends be straight end face, drill body rearward end 5 is provided with the secondary bite 6 of horizontally disposed S shape along ∞ font position, the secondary bite 6 of S shape is monolithic molding with drill body rearward end 5, and secondary bite 6 blade of S shape and drill body rearward end 5 horizontal axis angle are 15 ~ 30 °; Apex point 9 front end offers front bite 1, and front bite 1 is 15 ~ 45 ° with horizontal axis angle; Front bite 1, S shape bite 4 and the secondary bite 6 of S shape are worked in coordination, accelerates cutting speed, ensure that the fineness in cutting face.
Drill body also includes two groove for cuttings 2, groove for cuttings 2 extends to bottom from the start-up portion in drill body head portion 3 in a helical pattern, on arbitrary cross section of drill body, groove for cuttings 2 is all positioned at position diametrically opposed to each other in drill body plane, drill body is divided into four parts by two groove for cuttings 2 uniformly, the groove for cuttings 2 of this symmetric figure, and row's bevel is long-pending large, it is fast that row cuts speed, not easily causes broken accumulation of cutting.
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of patent of the present invention.
Claims (6)
1. the nonstandard Step drill of carbide alloy, by apex point, drillstock and drill body three part connect and compose, it is characterized in that: the structure of described drill body is made up of drill body head portion and drill body rearward end two parts monolithic molding; The structure of described drillstock is slender cylinder, in one end of drillstock, is provided with positioning groove near end position; The structure of described apex point is conical.
2. the nonstandard Step drill of a kind of carbide alloy according to claim 1, it is characterized in that: the ∞ font body of the structure in described drill body head portion to be two ends be straight end face, described drill body head portion is provided with horizontally disposed S shape bite along ∞ font position, described S shape bite and drill body head portion are monolithic molding, and described S shape bite blade and described drill body head portion horizontal axis angle are 30 ~ 45 °.
3. the nonstandard Step drill of a kind of carbide alloy according to claim 1, it is characterized in that: the ∞ font body of the structure of described drill body rearward end to be two ends be straight end face, described drill body rearward end is provided with the secondary bite of horizontally disposed S shape along ∞ font position, the secondary bite of described S shape and drill body rearward end are monolithic molding, and the secondary bite blade of described S shape and described drill body rearward end horizontal axis angle are 15 ~ 30 °.
4. the nonstandard Step drill of a kind of carbide alloy according to claim 1, it is characterized in that: described apex point front end offers front bite, described front bite and horizontal axis angle are 15 ~ 45 °.
5. the nonstandard Step drill of a kind of carbide alloy according to claim 1, it is characterized in that: described drill body also includes two groove for cuttings, described groove for cuttings extends to bottom from the start-up portion in drill body head portion in a helical pattern, on arbitrary cross section of drill body, groove for cuttings is all positioned at position diametrically opposed to each other in drill body plane, and drill body is divided into four parts by described two groove for cuttings uniformly.
6. the nonstandard Step drill of a kind of carbide alloy according to claim 1, is characterized in that: described positioning groove is the groove of two the semicircle strips offered along cylinder drillstock periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510276718.8A CN104816023A (en) | 2015-05-27 | 2015-05-27 | Hard alloy nonstandard step drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510276718.8A CN104816023A (en) | 2015-05-27 | 2015-05-27 | Hard alloy nonstandard step drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104816023A true CN104816023A (en) | 2015-08-05 |
Family
ID=53726631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510276718.8A Pending CN104816023A (en) | 2015-05-27 | 2015-05-27 | Hard alloy nonstandard step drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104816023A (en) |
-
2015
- 2015-05-27 CN CN201510276718.8A patent/CN104816023A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150805 |
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| WD01 | Invention patent application deemed withdrawn after publication |