CN218150768U - Double-layer spiral diamond-impregnated bit - Google Patents
Double-layer spiral diamond-impregnated bit Download PDFInfo
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- CN218150768U CN218150768U CN202222782888.1U CN202222782888U CN218150768U CN 218150768 U CN218150768 U CN 218150768U CN 202222782888 U CN202222782888 U CN 202222782888U CN 218150768 U CN218150768 U CN 218150768U
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Abstract
The utility model discloses a double-layer spiral diamond-impregnated bit, which comprises a bit body, wherein a gauge body and a chip groove are formed on the bit body; a gauge tooth group attached to the side of the feed direction of the drill bit is formed on the surface of the gauge body; the gauge bodies comprise first gauge bodies and second gauge bodies which are alternately arranged at intervals; the first type of gauge teeth formed on the first type of gauge body comprise main teeth and auxiliary teeth, the main teeth and the auxiliary teeth are spirally arranged, the main teeth are formed by arranging the first type of gauge body in the radial direction of the drill bit body, the auxiliary teeth are arranged outwards in the middle of the main teeth, and an included angle smaller than 45 degrees is formed by staggering the auxiliary teeth and the axis of the main teeth; the tooth diameter of the second gauge-protecting teeth formed on the second gauge-protecting body is larger than that of the first gauge-protecting teeth; and the first gauge teeth and the second gauge teeth are diamond-impregnated teeth. The utility model discloses a drill bit has the gage performance of preferred, and has more even face wearability on the gage flank of tooth.
Description
Technical Field
The utility model relates to a diamond bit manufacture equipment technical field, concretely relates to double-deck spiral impregnated diamond bit.
Background
The drill bit is the most widely applied tool consumable material in the drilling at present, wherein, the diamond-impregnated drill bit is a type of drill bit structure which is made by molding diamond micro powder and powder with a special formula on a rigid body through a special process, and has the characteristics of high drilling efficiency, long service life and the like.
When the diamond-impregnated bit in the prior art is used, polycrystalline diamond inlaid and welded on the bit is subjected to complex force in the drilling process, the polycrystalline diamond is subjected to vibration, impact and collision acting force frequently in the drilling operation process, particularly the acting force is obviously influenced at the top or gauge protection part of a blade, so that the diamond bit is quickly worn at the corresponding position and is easy to damage, and the damaged blade can reduce the drilling efficiency of the diamond bit and even be failed integrally; however, other parts of the bit body outside the specific position of the diamond bit are still in a usable state, so that the diamond bit is unevenly worn, and the whole service life of the diamond bit is influenced.
For the above reasons, there is a need to improve the drilling surface of the diamond drill bit, so as to ensure the drilling efficiency and make the abrasion more uniform, thereby improving the gauge protection capability of the drill bit and prolonging the service life.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a double-deck spiral impregnated diamond drill to solve the defect in the above-mentioned technical background.
The utility model provides a technical problem adopt following technical scheme to realize:
a double-layer spiral diamond-impregnated bit comprises a bit body, wherein an even number of gauge bodies are formed on the upper end surface of the bit body at intervals in an annular mode, and chip removal grooves are formed between adjacent gauge bodies in the position of the bit body; a gauge tooth group attached to the side of the feed direction of the drill bit is formed on the surface of the gauge body;
the gauge bodies comprise first type gauge bodies and second type gauge bodies which are arranged in a staggered mode, and the first type gauge bodies and the second type gauge bodies are alternately arranged at intervals;
the gauge tooth group comprises first gauge teeth formed on the first gauge body and second gauge teeth formed on the second gauge body:
the first type of gauge teeth comprise main teeth and auxiliary teeth, and the main teeth and the auxiliary teeth are spirally arranged; the main teeth are distributed and molded in the radial direction of the bit body through the first-class diameter-protecting bodies, and the radial full coverage can be ensured; the auxiliary teeth are arranged outwards in the middle of the main teeth, and are staggered from the axis of the main teeth by an included angle of less than 45 degrees;
the tooth diameter of the second gauge teeth is larger than that of the first gauge teeth;
the first type of gauge teeth and the second type of gauge teeth are diamond-impregnated teeth.
As a further limitation, the bit body is formed from 45 steel.
As a further definition, the lower part of the bit body is formed with a fitting part, and the bit body is connected with a drilling device which drives the bit body to rotate through the fitting part in a fitting mode.
As a further limitation, the chip removal groove is of an inwards concave arc surface structure, and the size of the cross section of the chip removal groove is continuously increased from top to bottom so as to improve the chip removal capacity of the chip removal groove.
By way of further limitation, the number of gauge bodies arranged on the bit body is preferably six, namely three gauge bodies of the first type and three gauge bodies of the second type.
As a further limitation, in the first gauge teeth formed on the first gauge body, the included angle between the main teeth and the auxiliary teeth is 20-25 degrees.
As a further limitation, the length of the second type of gauge body in the radial direction of the drill bit body is 1/2-2/5 of the radius of the drill bit body, the second type of gauge body is abutted against the outer edge of the drill bit body on the outer side, and water holes are formed in the surface of the drill bit body on the inner side of the second type of gauge body.
By way of further limitation, the first type of diameter-maintaining body is in transition connection with the drill bit body into a whole through a slope surface on the back side of the cutting direction of the drill bit, so that structural reinforcement of the first type of diameter-maintaining body under a stress state is achieved.
By further limitation, the tooth diameter of the main tooth in the tooth diameter of the first type gauge tooth is 13-16 mm, and the tooth diameter of the auxiliary tooth is 10-13 mm; the tooth diameter of the second gauge tooth is 1.25-1.75 times of the tooth diameter of the main tooth in the first gauge tooth.
As a further limitation, the second gauge teeth are linearly arranged on the second gauge body, and the straight line coincides with an axis passing through the axis of the bit body.
Has the advantages that: the utility model relates to a double-deck spiral impregnated diamond drill bit is suitable for the quick drilling of loose terrains such as shale, glutenite, coal petrography, the first kind of gauge teeth of minor diameter of its double-deck spiral structure has good broken rock performance to loose stratum, cooperates the drilling cooperation of second kind of gauge teeth, can greatly increase the gauge ability of drill bit gauge under the prerequisite that does not increase whole gauge area, effectively improves the speed that improves the drill bit and creeps into;
and the combined structure of the main teeth and the auxiliary teeth in the first type of gauge teeth can continuously play a role of cutting a rock wall after the front row of main teeth are damaged, so that the uniform dispersion of the local wear resistance of the inner side and the outer edge of the gauge block is enhanced, and the wear of the gauge block is better prevented at the middle ring surface position of the drill bit through the close matching of the main teeth and the auxiliary teeth, thereby improving the gauge protection capability of the drill bit and prolonging the service life.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Wherein: 1. a first type of gauge body; 2. a chip groove; 3. a second type of gauge body; 4. a water pore; 5. a main gear; 6. secondary teeth; 7. a bit body; 8. second kind gauge protection teeth; 9. a ramp transition surface.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, in the present embodiment, the body of the double-layer spiral diamond-impregnated bit is a bit body 7 formed by 45 # steel, and an assembling portion is formed at the lower portion of the bit body 7, and the assembling portion may be a standard component or a non-standard component modified according to the actual drilling equipment requirements, so that the bit body 7 can be assembled and connected on the corresponding drilling equipment and the rotary drilling function can be realized.
The drill bit body 7 is the same as other drill bit structures in the market, the cross section of the drill bit body 7 is circular, six gauge bodies are formed on the top surface of the circular cross section of the drill bit body 7, the six gauge bodies comprise three first gauge bodies 1 and three second gauge bodies 3, and the first gauge bodies 1 and the second gauge bodies 3 are arranged in a staggered mode and are evenly distributed on the cross section circle corresponding to the top surface of the drill bit body 9. The first type of gauge body 1 is arranged in the radial direction of the bit body 7 and eccentrically staggers the axial center structure of the bit body 7 at the inner side, and the length of the second type of gauge body 3 in the radial direction of the bit body is 1/2 of the radius of the bit body.
The first type of gauge body 1 and the second type of gauge body 3 are provided with upward convex crowns on the top surfaces, and the heights of the top surfaces of the crowns on the outer side of the drill bit body are higher than those of the top surfaces on the inner side; meanwhile, the outer edges of the first type gauge body 1 and the second type gauge body 3 are provided with outward-expanded outer diameters as rock breaking structures; in order to improve the structural stability of the first kind of gauge body 1 as a whole, the first kind of gauge body 1 is integrally formed with the bit body 7 through the slope transition surface 9 at the back side of the drill bit feed direction, so as to realize structural reinforcement of the first kind of gauge body 1 in a stressed state. Because the length of the second type gauge body 3 in the radial direction of the drill bit body is 1/2 of the radius of the drill bit body, a space is reserved between the inner side of the second type gauge body 3 and the axis position of the drill bit body, and a water hole 4 can be formed in the space position.
In this embodiment, the first-type gauge body 1 is formed with first-type gauge teeth, the first-type gauge teeth include main teeth 5 and auxiliary teeth 6, the main teeth 5 and the auxiliary teeth 6 are both arranged in an S-shaped spiral shape as shown in fig. 1, the main teeth 5 are radially arranged and formed on the bit body 7 by using the first-type gauge body 1 as a structural support, and the first-type gauge body 1 is eccentrically staggered inside from the axial structure of the bit body 7 so that the tooth surface of the main teeth 5 can ensure that the radial surface of the bit body 7 can be completely covered in the drilling process. And the secondary teeth 6 are arranged outward at the middle position of the main teeth 5 and are staggered with an included angle of 20 degrees with the tooth profile axis of the main teeth 5. And a second gauge protection tooth 8 is formed on the second gauge protection body 3, the second gauge protection teeth 8 are linearly arranged on the second gauge protection body 3, and the straight line is superposed on the axis of the drill bit body 7.
In the embodiment, the first gauge teeth formed on the first gauge body 1 and the second gauge teeth 8 formed on the second gauge body 3 are diamond-impregnated teeth, wherein the tooth diameter of the main teeth in the first gauge teeth is 16mm, and the tooth diameter of the auxiliary teeth is 13mm; and the tooth diameter of the second gauge tooth 8 is 24mm of the tooth diameter of the main tooth in the first gauge tooth.
The second gauge teeth 8 are used as rear-end gauge teeth and the first gauge teeth as front-end gauge teeth, so that the righting width of the whole drill bit body 7 on the well wall in the drilling process can be increased to the maximum extent, and the amplitude of transverse swing of the drill bit is reduced; the combination of the main teeth 5 and the auxiliary teeth 6 on the gauge body 1 of the first type can form nonlinear stress on a broken rock surface through a spiral structure, so that the stress damage probability on the main teeth 5 is reduced, meanwhile, the staggered angle of the auxiliary teeth 6 and the main teeth 5 enables the gauge teeth of the first type to have multi-face impact capability on loose rock layers such as mud shale, glutenite, coal rock and the like, and the gauge teeth of a small diameter are matched to have excellent drilling performance on the loose rock layers after rock breaking, and the gauge teeth of a second type 8 of a large diameter are matched to enhance the gauge capability of a gauge block of the drill bit in the drilling process, so that the gauge life of the drill bit is remarkably prolonged, and the stability of the drill bit in the drilling process is also enhanced.
In this embodiment, a chip removal groove 2 is further formed between the first type of gauge body 1 and the second type of gauge body 3 which are adjacent to each other in the six gauge bodies, that is, six chip removal grooves 2 are formed on the top surface of the bit body 9, the six chip removal grooves 2 are recessed inward toward the surface of the bit body 9, and the cross-sectional dimensions of the recessed chip removal grooves 2 are continuously increased from top to bottom to improve the chip removal capability of the chip removal grooves 2.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.
Claims (10)
1. The double-layer spiral diamond-impregnated bit is characterized by comprising a bit body, wherein an even number of gauge bodies are annularly and alternately formed on the upper end surface of the bit body, and chip removal grooves are formed between adjacent gauge bodies of the bit body; a gauge tooth group attached to the side of the feed direction of the drill bit is formed on the surface of the gauge body;
the gauge bodies comprise first gauge bodies and second gauge bodies which are arranged in a staggered mode, and the first gauge bodies and the second gauge bodies are alternately arranged at intervals;
the gauge tooth group comprises first gauge teeth formed on the first gauge body and second gauge teeth formed on the second gauge body:
the first type of gauge protection teeth comprise main teeth and auxiliary teeth, and the main teeth and the auxiliary teeth are spirally arranged; the main teeth are distributed and molded in the radial direction of the bit body through the first-class diameter-protecting bodies, and the radial full coverage can be ensured; the auxiliary teeth are arranged outwards in the middle of the main teeth, and are staggered from the axis of the main teeth by an included angle of less than 45 degrees;
the tooth diameter of the second gauge tooth is larger than that of the first gauge tooth;
the first type of gauge teeth and the second type of gauge teeth are diamond-impregnated teeth.
2. The dual layer helical impregnated diamond drill bit according to claim 1, wherein the bit body is formed from 45 gauge steel.
3. The double-layer spiral impregnated diamond drill bit according to claim 1, wherein the lower part of the drill bit body is formed with a fitting part, and the drill bit body is assembled and connected with a drilling device for driving the drill bit body to rotate through the fitting part.
4. The double-layer spiral diamond-impregnated drill bit according to claim 1, wherein the chip removal groove is of an inward concave arc surface structure, and the size of the cross section of the chip removal groove is continuously increased from top to bottom so as to improve the chip removal capacity of the chip removal groove.
5. The dual layer helical impregnated diamond drill bit according to claim 1, wherein the number of gauge bodies provided on the bit body is six, corresponding to three first type gauge bodies and three second type gauge bodies.
6. The dual layer spiral diamond-impregnated bit according to claim 1, wherein the angle between the primary teeth and the secondary teeth is 20-25 ° in the first gauge teeth formed on the first gauge body.
7. The double-layer spiral impregnated diamond drill bit according to claim 1, wherein the length of the second type of gauge body in the radial direction of the drill bit body is 1/2-2/5 of the radius of the drill bit body, the second type of gauge body is attached to the outer edge of the drill bit body on the outer side, and water holes are formed in the surface of the drill bit body on the inner side of the second type of gauge body.
8. The dual layer helical impregnated diamond drill bit according to claim 1, wherein the first type of gauge body is integrally transitionally connected to the bit body via a sloped surface on the back side in the direction of bit feed.
9. The double-layer spiral diamond-impregnated drill bit according to claim 1, wherein the tooth diameter of the main teeth in the tooth diameter of the first gauge teeth is 13-16 mm, and the tooth diameter of the auxiliary teeth is 10-13 mm; the tooth diameter of the second gauge tooth is 1.25-1.75 times of the tooth diameter of the main tooth in the first gauge tooth.
10. The dual layer helical diamond-impregnated drill bit according to claim 1, wherein the second type gauge teeth are arranged in a straight line on the second type gauge body, and the straight line coincides with an axis passing through the axis of the bit body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222782888.1U CN218150768U (en) | 2022-10-21 | 2022-10-21 | Double-layer spiral diamond-impregnated bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222782888.1U CN218150768U (en) | 2022-10-21 | 2022-10-21 | Double-layer spiral diamond-impregnated bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218150768U true CN218150768U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222782888.1U Active CN218150768U (en) | 2022-10-21 | 2022-10-21 | Double-layer spiral diamond-impregnated bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218150768U (en) |
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2022
- 2022-10-21 CN CN202222782888.1U patent/CN218150768U/en active Active
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