CN2936509Y - Screw multifunction drill bit - Google Patents
Screw multifunction drill bit Download PDFInfo
- Publication number
- CN2936509Y CN2936509Y CN 200620075691 CN200620075691U CN2936509Y CN 2936509 Y CN2936509 Y CN 2936509Y CN 200620075691 CN200620075691 CN 200620075691 CN 200620075691 U CN200620075691 U CN 200620075691U CN 2936509 Y CN2936509 Y CN 2936509Y
- Authority
- CN
- China
- Prior art keywords
- cutting portion
- drill bit
- shoulder
- excessively
- utility
- 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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- Drilling Tools (AREA)
Abstract
The utility model relates to a bit used in a drilling rig, in particular to a spiral bit with a chip area arranged on a cutting tip. The utility model adopts the technical proposal that: the spiral multi-functional bit has a body in the shape of a column, one end of the body is a drill shank which can be positioned in the drilling rig and the other end is the cutting tip, at least a path of chip area is arranged on the peripheral surface. The top end of the cutting tip is a necking cutting lip and the cutting tip is provided with at least a shoulder stair. The utility model overcomes the deficiencies of the prior art and provides a bit which is convenient and efficient, with the holes which can be bored with a shoulder stair on the in-wall once.
Description
Technical field
The utility model relates to the drill bit of using on a kind of rig, is meant that especially a kind of its cutting portion is provided with the screw type bit of chip area.
Background technology
At present, on the market and the screw type bit that occurs and reported on the magazine, the screw type chip area that is provided with of its cutting portion, the drill bit of this structure exists some defectives.After its one action is intact, hole on the drilled object all is a through type, in fact be that its inwall of requirement has shoulder rank in the hole that a lot of occasions need, shoulder rank one side is the big hole of diameter, its opposite side is the little hole of diameter, nut or head of screw can be contained in the big inside, hole of diameter like this, have prevented that effectively nut or screw from being screwed out easily.Existing screw type bit just can not disposable finishing, usually after earlier wanting good through hole of the little bit drills of diameter or blind hole, again on its top with the diameter bit drills bigger than original drill bit, thereby reach above-mentioned said its inwall one shoulder rank are arranged, shoulder rank one side is direct big hole, its opposite side is the hole in the little hole of diameter, utilizes its efficient of such method end very, and difficult quality guarantee.
Summary of the invention
The utility model has overcome the deficiencies in the prior art, provide a kind of easy to use, efficient is high and can once finish and bore the drill bit that inwall has the hole on shoulder rank.
Realize above-mentioned purpose, the utility model adopts following technical scheme: a kind of multifunctional spiral drill bit, the body that it has a global shape is cylindricality, described body one end is the drillstock that is suitable for being housed in the rig, the other end is the cutting portion that perimeter surface is provided with at least one chip area, described cutting portion top is a reducing shape cutting edge, and described cutting portion has at least shoulder rank excessively to cooperate.
Further setting of the present utility model is: described cutting portion is wholely set by two parts to be formed, wherein near the maximum gauge of the cross section of the cutting portion of the drillstock part maximum gauge greater than the cross section of another part cutting portion, and two parts excessively cooperate by the shoulder rank.
Further setting of the present utility model is: the bottom of described two-part chip area is that the plane excessively cooperates.
Of the present utility model further the setting again is: the shoulder terrace that described shoulder rank excessively cooperate is the inclined-plane, and the one side is a cutting edge.
Beneficial effect: be provided with the shoulder rank by the cutter portion of cutting and excessively cooperate at drill bit, the then corresponding excessive face that is also just had this shoulder rank cooperation by the hole of this bit drills; Owing to being wholely set by two parts, described cutting portion forms again, wherein the maximum gauge of the cross section of the part cutting portion of close drillstock is greater than the maximum gauge of the cross section of another part cutting portion, and two parts excessively cooperate by the shoulder rank, after so just can allowing this drill bit one action intact, the hole of being bored be two diameter differ be positioned at hole on the same axis, and be that the shoulder rank excessively cooperate between two holes.
Below in conjunction with accompanying drawing the utility model is described further:
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the user mode structural representation of the utility model embodiment.
The specific embodiment
As depicted in figs. 1 and 2, a kind of multifunctional spiral drill bit, the body 1 that it has a global shape is cylindricality, described body 1 one ends are the drillstock 12 that is suitable for being housed in the rig, the other end is the cutting portion 11 that perimeter surface is provided with one chip area 111, certainly also can be provided with multiple tracks chip area 111 on the cutting portion 11 in the utility model, described cutting portion 11 tops are reducing shape cutting edge, and this reducing shape cutting edge is the on-line operation face of bit drills drilled object 3.Described cutting portion 11 is wholely set by two parts to be formed, wherein the maximum gauge of the cross section of the cutting portion part 113 of close drillstock 12 is greater than the maximum gauge of the cross section of another part cutting portion 114, and two parts excessively cooperate by shoulder rank 112, the hole that utilizes the drill bit of this structure to get out is made up of the hole that is positioned on the same axis that two diameter differ, and is that the shoulder rank excessively cooperate between two holes.In order to take on the excessively easier cutting on rank 112, the shoulder terrace that described drill bit shoulder rank 112 excessively cooperate is the inclined-plane in the utility model, and the one side is a cutting edge 1121.In the utility model embodiment, the cutting portion 11 of described drill bit also can be to be wholely set by many parts to constitute, and from being arranged in order from big to small, and all excessively cooperate between each part by the shoulder rank with the maximum gauge of the cutting portion of drillstock 12 connecting portions part to the cross section of each part of cutting portion part with cutting edge.In order not influence drill bit when working, the bits of drilled object are discharged smoothly from chip area 111 at last, the bottom of described two-part chip area 111 is that the plane excessively cooperates.
Claims (4)
1, a kind of multifunctional spiral drill bit, the body that it has a global shape is cylindricality, described body one end is the drillstock that is suitable for being housed in the rig, the other end is the cutting portion that perimeter surface is provided with at least one chip area, described cutting portion top is a reducing shape cutting edge, it is characterized in that: described cutting portion has at least shoulder rank excessively to cooperate.
2, multifunctional spiral drill bit according to claim 1, it is characterized in that: described cutting portion is wholely set by two parts to be formed, wherein near the maximum gauge of the cross section of the cutting portion of the drillstock part maximum gauge greater than the cross section of another part cutting portion, and two parts excessively cooperate by the shoulder rank.
3, multifunctional spiral drill bit according to claim 2 is characterized in that: the bottom of described two-part chip area is that the plane excessively cooperates.
4, according to claim 1 or 2 or 3 described multifunctional spiral drill bits, it is characterized in that: the shoulder terrace that described shoulder rank excessively cooperate is the inclined-plane, and the one side is a cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075691 CN2936509Y (en) | 2006-08-23 | 2006-08-23 | Screw multifunction drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075691 CN2936509Y (en) | 2006-08-23 | 2006-08-23 | Screw multifunction drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2936509Y true CN2936509Y (en) | 2007-08-22 |
Family
ID=38360528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620075691 Expired - Fee Related CN2936509Y (en) | 2006-08-23 | 2006-08-23 | Screw multifunction drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2936509Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335769A (en) * | 2010-07-16 | 2012-02-01 | 上海汇大机械制造有限公司 | Method and tool for processing precast hole with circumferential incomplete hole wall |
-
2006
- 2006-08-23 CN CN 200620075691 patent/CN2936509Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335769A (en) * | 2010-07-16 | 2012-02-01 | 上海汇大机械制造有限公司 | Method and tool for processing precast hole with circumferential incomplete hole wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |