CN203008789U - Diamond composite cutter head - Google Patents
Diamond composite cutter head Download PDFInfo
- Publication number
- CN203008789U CN203008789U CN 201220699513 CN201220699513U CN203008789U CN 203008789 U CN203008789 U CN 203008789U CN 201220699513 CN201220699513 CN 201220699513 CN 201220699513 U CN201220699513 U CN 201220699513U CN 203008789 U CN203008789 U CN 203008789U
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- CN
- China
- Prior art keywords
- diamond composite
- cutter head
- blade
- drill
- composite blade
- 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 - Lifetime
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Abstract
A diamond composite cutter head comprises a cutter head body, wherein the front end of the cutter head is connected with a diamond composite blade, the cutter head body is installed on a drill head drill body in a slanting mode, and the diamond composite blade is connected at the front end of the cutter head in a welded and slanting mode. The front blade face of the diamond composite blade is a plane, the front blade face of the diamond composite blade is parallel to an axial line of the drill head drill body in an approaching mode and a cutting stress of the diamond composite blade is parallel to the axial line of the cutter head body in an approaching mode. By changing an installation angle of the cutter head body and being matched with a welded angle of the diamond composite blade, the angle of the cutting front blade face is changed so as to reduce an included angle between the front blade face of the diamond composite blade and the axial line of the cutter head body. After the angle is changed, the area of the front blade face is reduced, the area of a polycrystalline diamond layer is reduced and cost is lowered. By increasing the included angle between the installation hole axial line and the direction of cutting speed, a cutting stress F points towards the hemispheric end of the cutter head in a cutting process, and the diamond composite cutter head is fixed tightly on an installation blind hole.
Description
Technical field
The utility model relates to the installing area of diamond composite blade, particularly a kind of diamond composite cutter for oil bit.
Background technology
Diamond composite blade (Polycrystalline Diamond Compact) is the blade that a kind of glomerocryst top layer of diamond and carbide alloy tungsten carbide bottom are made under HTHP, it not only has hardness, the abrasion resistance of polycrystalline diamond, also has structural strength and the shock resistance of tungsten carbide concurrently.
The moulding process of diamond composite cutter is to adopt special warfare, and the diamond composite blade is welded on bullet-headed hard alloy substrate end face.At present, diamond composite cutter has been widely used in oil bit.
In prior art, an end of bullet-headed diamond composite cutter is the plane, and the other end is hemispherical.Its plane one end is work plane, is welded with the diamond composite blade, and diamond composite blade and body of tool bit axis angle are near 90 °, and hemispherical ends and the face of cylinder are for supporting stationary plane.This cutter head need to be preset semi open model cylindrical hole longitudinally on the oil bit drill body, be hemispherical at the bottom of the hole, and diamond composite cutter namely is installed on this, forms certain coordinating with cylindrical hole, and is fixed at the bottom of hemispherical-shaped aperture with the method for soldering.Axial and the cutting speed direction of blade is less angle, namely forms the anterior angle of cutting.Reliable in order to install, need the hard alloy substrate (being bullet-headed matrix) of blade to have certain length, it is reliable that the guarantee blade is fixed, and consumes cutter material more.Simultaneously, the semi open model cylindrical hole that is used for the installation blade is not complete cylinder, therefore, hole wall in use also easily occurs and breaks, and causes blade to come off, and has reduced the reliability that blade is installed.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of diamond composite cutter, can reduce the volume of diamond composite cutter, and the blade difficult drop-off, and is stressed more reliable, thereby fixing more reliable.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of diamond composite cutter, comprise body of tool bit, and the body of tool bit front end is welded with the diamond composite blade, body of tool bit tilts to be arranged on the drill bit drill body, and the diamond composite blade tilts to be welded on the front end of body of tool bit.
The rake face of described diamond composite blade is the plane.
The axis of the rake face of described diamond composite blade and drill bit drill body is near parallel.
The cutting stress of diamond composite blade with the axis of body of tool bit near parallel.
Described body of tool bit is provided with installation end, and the drill bit drill body is provided with corresponding installing blind, becomes interference fit between installation end and installing blind.
A kind of diamond composite cutter that the utility model provides, by changing the setting angle of body of tool bit, and coordinate to change the soldering angle of diamond composite blade, thus changed the angle of cutting rake face, with the rake face that reduces the diamond composite blade and the angle of body of tool bit axis.After Angulation changes, the rake face area reduces, and the dimond synneusis aspect is long-pending to be reduced, and has reduced cost; Installing hole axis and cutting speed angular separation increase, the cutting stress F in working angles points to body of tool bit hemispherical one end, is more conducive to diamond composite cutter and tightly is fixed in installing blind.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is structural representation of the present utility model.
In figure: body of tool bit 1, drill bit drill body 2, diamond composite blade 3, machined surface 4, installation end 5, installing blind 6, body of tool bit axis 7, bit drills body axis 8.
The specific embodiment
In Fig. 1, a kind of diamond composite cutter comprises body of tool bit 1, and body of tool bit 1 front end is welded with diamond composite blade 3, and body of tool bit 1 tilts to be arranged on drill bit drill body 2, and diamond composite blade 3 tilts to be welded on the front end of body of tool bit 1.
The rake face of described diamond composite blade 3 is the plane.Front end face in this example refers to the face of Reference numeral 3 lead-in wire indications, is shown as straight line in Fig. 1.
In the scheme of optimizing, the rake face of described diamond composite blade 3 is that bit drills body axis 8 is near parallel with the axis of drill bit drill body 2.
In optional prioritization scheme, the cutting stress F of diamond composite blade 3 is that body of tool bit axis 7 is near parallel with the axis of body of tool bit 1.Generally, degree of closeness is higher because cross component force is less, and better effects if.Structure thus, body of tool bit 1 stressed more reliable is more conducive to the fixing of body of tool bit 1.
Described body of tool bit 1 is provided with installation end 5, and drill bit drill body 2 is provided with corresponding installing blind 6, becomes interference fit between installation end 5 and installing blind 6.Due to structural change of the present utility model, so the installation between body of tool bit 1 and drill bit drill body 2 can weld, and adopts interference fit reliably to install, and also is convenient to the replacing of later stage blade.
Claims (5)
1. diamond composite cutter, comprise body of tool bit (1), body of tool bit (1) front end is welded with diamond composite blade (3), it is characterized in that: body of tool bit (1) tilts to be arranged on drill bit drill body (2), and diamond composite blade (3) tilts to be welded on the front end of body of tool bit (1).
2. a kind of diamond composite cutter according to claim 1, it is characterized in that: the rake face of described diamond composite blade (3) is the plane.
3. a kind of diamond composite cutter according to claim 2 is characterized in that: the axis of the rake face of described diamond composite blade (3) and drill bit drill body (2) is near parallel.
4. a kind of diamond composite cutter according to claim 2 is characterized in that: the cutting stress (F) of diamond composite blade (3) with the axis of body of tool bit (1) near parallel.
5. a kind of diamond composite cutter according to claim 1, it is characterized in that: described body of tool bit (1) is provided with installation end (5), drill bit drill body (2) is provided with corresponding installing blind (6), becomes interference fit between installation end (5) and installing blind (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699513 CN203008789U (en) | 2012-12-18 | 2012-12-18 | Diamond composite cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699513 CN203008789U (en) | 2012-12-18 | 2012-12-18 | Diamond composite cutter head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008789U true CN203008789U (en) | 2013-06-19 |
Family
ID=48600396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220699513 Expired - Lifetime CN203008789U (en) | 2012-12-18 | 2012-12-18 | Diamond composite cutter head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203008789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867131A (en) * | 2012-12-18 | 2014-06-18 | 宜昌神达石油机械有限公司 | Diamond compound cutting head |
-
2012
- 2012-12-18 CN CN 201220699513 patent/CN203008789U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867131A (en) * | 2012-12-18 | 2014-06-18 | 宜昌神达石油机械有限公司 | Diamond compound cutting head |
| CN103867131B (en) * | 2012-12-18 | 2017-05-24 | 宜昌神达石油机械有限公司 | Diamond compound cutting head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 443001 Hubei city of Yichang province Wujiagang Gorges private science and Technology Park Qian Ping Road No. 6 Patentee after: Yichang Shenda Technology Co.,Ltd. Address before: 443001 Hubei province Wujiagang Gorges private science and technology park before Ping Road No. 6 Patentee before: YICHANG SHENDA PETROMACHINE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |