CN209986292U - Composite drill bit - Google Patents
Composite drill bit Download PDFInfo
- Publication number
- CN209986292U CN209986292U CN201920595798.7U CN201920595798U CN209986292U CN 209986292 U CN209986292 U CN 209986292U CN 201920595798 U CN201920595798 U CN 201920595798U CN 209986292 U CN209986292 U CN 209986292U
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- set nut
- bore hole
- base
- boring
- outside
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Abstract
The utility model belongs to the technical field of the machining cutter technique and specifically relates to a compound drill bit, including the drilling sword, drilling sword outside surface is opened there is the chip groove, drilling sword top fixedly connected with screw post, the bore hole base has been cup jointed in the screw post bottom outside, drilling sword top outside threaded connection has third set nut, third set nut top offsets with bore hole base bottom, screw post outside threaded connection has first set nut and second set nut, first set nut bottom offsets with second set nut top, the set cover plate has been cup jointed in the screw post outside, second set nut bottom offsets with the set cover plate top, the set cover plate bottom offsets with bore hole base top, bore hole base side-mounting has the boring sword, the bore hole base passes through fixed establishment and screw thread column connection. The utility model discloses simple structure can improve work efficiency, is worth promoting.
Description
Technical Field
The utility model relates to a machining cutter technical field especially relates to a compound drill bit.
Background
The drill bit is a cutting tool adopted by a common drill or a drilling machine to cut a circular hole, the basic principle of the drill bit is that the edge of the drill bit is cut to rotate, a workpiece is cut, and drill cuttings are removed through a drilling groove.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming of low efficiency of the drill bit processing workpiece existing in the prior art and providing a composite drill bit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a composite drill bit, includes the drilling sword, the drilling sword outside surface is opened there is the chip groove, drilling sword top fixedly connected with screw post, the bore hole base has been cup jointed in the screw post bottom outside, drilling sword top outside threaded connection has third set nut, third set nut top offsets with bore hole base bottom, screw post outside threaded connection has first set nut and second set nut, first set nut bottom offsets with second set nut top, the location apron has been cup jointed in the screw post outside, second set nut bottom offsets with the location apron top, the location apron bottom offsets with bore hole base top, bore hole base side-mounting has the boring sword, the bore hole base passes through fixed establishment and screw thread column connection.
Preferably, the side surface of the boring base is provided with a plurality of convex grooves which are uniformly distributed along the circumferential direction of the boring base, a boring cutter is placed in each convex groove, and the top end of each boring cutter is abutted against the bottom end of the positioning cover plate.
Preferably, the fixing mechanism comprises a countersunk threaded hole, the countersunk threaded hole penetrates through the boring base and extends to the threaded column, and a countersunk screw is connected to the inner thread of the countersunk threaded hole.
The utility model provides a pair of composite drill bit, beneficial effect lies in: the utility model discloses a be provided with the bore hole base, install the boring cutter on the bore hole base, enable the work piece and realize drilling and bore hole process, avoid changing the waste that the tool bit caused time, improve production efficiency.
Two positioning nuts are arranged at the top end of the positioning cover plate, so that the possibility of axial movement of the boring base is reduced.
Set up fixed establishment and fix the relative screw thread post of bore hole base, avoid the bore hole base at the during operation, take place circumferential direction.
Drawings
Fig. 1 is a schematic structural diagram of a composite drill bit according to the present invention;
fig. 2 is a schematic structural view of another angle of the composite drill bit according to the present invention;
fig. 3 is a schematic structural diagram of a composite drill bit at a countersunk screw according to the present invention.
In the figure: the hole boring tool comprises a drilling tool 1, a boring base 2, a boring tool 3, a positioning cover plate 4, a first positioning nut 5, a second positioning nut 6, a chip groove 7, a third positioning nut 8, a threaded column 9, a countersunk threaded hole 10, a countersunk screw 11 and a convex groove 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a composite drill bit comprises a drilling cutter 1, wherein a chip groove 7 is formed on the outer side surface of the drilling cutter 1, the chip groove 7 is used for discharging waste materials of workpieces in drilling, a threaded column 9 is fixedly connected to the top end of the drilling cutter 1, a boring base 2 is sleeved on the outer side of the bottom of the threaded column 9, a third positioning nut 8 is connected to the outer side of the top of the drilling cutter 1 in a threaded manner, the top end of the third positioning nut 8 abuts against the bottom end of the boring base 2, a first positioning nut 5 and a second positioning nut 6 are connected to the outer side of the threaded column 9 in a threaded manner, the bottom end of the first positioning nut 5 abuts against the top end of the second positioning nut 6, the boring base 2 is axially fixed through the positioning nuts, a positioning cover plate 4 is sleeved on the outer side of the threaded column 9, the bottom end of the second positioning nut 6 abuts against the top end of the positioning cover plate 4, the bottom end, the side surface of the boring base 2 is provided with a boring cutter 3, and the boring base 2 is connected with a threaded column 9 through a fixing mechanism.
The side face of the boring base 2 is provided with a plurality of convex grooves 12, the convex grooves 12 are evenly distributed along the circumferential direction of the boring base 2, boring cutters 3 are placed in the convex grooves 12, the top ends of the boring cutters 3 are abutted against the bottom end of the positioning cover plate 4, the fixing mechanism comprises countersunk threaded holes 10, the countersunk threaded holes 10 penetrate through the boring base 2 and extend to the threaded columns 9, the countersunk screws 11 are connected with the inner threads of the countersunk threaded holes 10, the boring cutters 3 are evenly distributed along the circumferential direction of the boring base 2, the precision of the machined hole wall of a workpiece can be improved, and the boring base 2 is fixed relative to the threaded columns 9 through the countersunk screws 11.
The theory of operation, with 9 one ends of screw post and drilling machinery fixed mounting, adjust the position of bore hole base 2 relative drilling sword 1 as required, in the process that does not need the bore hole, move bore hole base 2 toward the top of screw post 9, need the bore hole with bore hole base 2 toward the screw post 9 bottom, specific position is according to actual need and decides.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (3)
1. The utility model provides a composite drill bit, includes drilling sword (1), drilling sword (1) outside surface is opened there is chip groove (7), its characterized in that, drilling sword (1) top fixedly connected with screw post (9), screw post (9) bottom outside has cup jointed bore hole base (2), drilling sword (1) top outside threaded connection has third set nut (8), third set nut (8) top offsets with bore hole base (2) bottom, screw post (9) outside threaded connection has first set nut (5) and second set nut (6), first set nut (5) bottom offsets with second set nut (6) top, set apron (4) have been cup jointed in the screw post (9) outside, second set nut (6) bottom offsets with set apron (4) top, set apron (4) bottom offsets with bore hole base (2) top, the side surface of the boring base (2) is provided with a boring cutter (3), and the boring base (2) is connected with a threaded column (9) through a fixing mechanism.
2. A composite drill bit according to claim 1, characterized in that the side of the boring base (2) is provided with a plurality of convex grooves (12), the convex grooves (12) are evenly distributed along the circumference of the boring base (2), the boring cutter (3) is placed in the convex grooves (12), and the top end of the boring cutter (3) is abutted against the bottom end of the positioning cover plate (4).
3. A composite drill bit according to claim 1, characterized in that the fixing means comprise a countersunk threaded hole (10), said countersunk threaded hole (10) extending through the bored base (2) and to the threaded post (9), said countersunk threaded hole (10) being internally threaded with a countersunk screw (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920595798.7U CN209986292U (en) | 2019-04-28 | 2019-04-28 | Composite drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920595798.7U CN209986292U (en) | 2019-04-28 | 2019-04-28 | Composite drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209986292U true CN209986292U (en) | 2020-01-24 |
Family
ID=69293053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920595798.7U Active CN209986292U (en) | 2019-04-28 | 2019-04-28 | Composite drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209986292U (en) |
-
2019
- 2019-04-28 CN CN201920595798.7U patent/CN209986292U/en active Active
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