CN221064564U - Cross alloy electric hammer drill - Google Patents
Cross alloy electric hammer drill Download PDFInfo
- Publication number
- CN221064564U CN221064564U CN202322766171.2U CN202322766171U CN221064564U CN 221064564 U CN221064564 U CN 221064564U CN 202322766171 U CN202322766171 U CN 202322766171U CN 221064564 U CN221064564 U CN 221064564U
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- blade
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- auxiliary
- electric hammer
- cross
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- 239000000956 alloy Substances 0.000 title claims abstract description 27
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Abstract
The utility model discloses a cross alloy electric hammer drill, which comprises a drill rod and a tool bit arranged at the end part of the drill rod through a fixed structure; the drill rod is provided with a spiral chip groove; the tool bit comprises a cross-shaped connecting part connected with the drill rod and a cutting edge arranged on the connecting part; the blades comprise main blades and auxiliary blades which are arranged at intervals; wherein, the main blade converges towards the center to form a straight positioning part; the diameter D of the main cutting edge is 0.3mm-0.5mm larger than the diameter D of the auxiliary cutting edge; the thicknesses of the main blade and the auxiliary blade are consistent; the height h 1 of the main blade is 1.0mm-2.0mm higher than the height h 2 of the auxiliary blade. Through the arrangement of the height and between the main blade and the auxiliary blade; the positioning is accurate, the processing quality and the processing efficiency are improved, the chip removal efficiency can be improved, and the heating and falling of the cutter head are avoided.
Description
Technical Field
The utility model relates to the field of hardware tools, in particular to a cross alloy electric hammer drill.
Background
The existing alloy drill bit mainly comprises a drill rod and an alloy cutter head, and in order to improve the cutting performance and the service life of the drill bit, the alloy cutter head needs to be welded at the end part of the drill rod, so that when the drill bit works, the alloy cutter head can rapidly conduct cutting operation on a working surface.
In the actual drilling process, smoothness of chip removal is required to be ensured, heating and falling off of the alloy cutter head are further avoided, positioning stability during use is required to be ensured, and cutting effect is ensured.
For example, "an alloy drill capable of rapidly discharging chips" disclosed in chinese patent publication No. CN206981824U. The patent relates to an alloy drill bit capable of rapidly removing chips, which is characterized in that the top end of a drill rod is provided with fixed clamping grooves with the same number as that of cutting edges of alloy cutter heads, and the cutting edges of the alloy cutter heads are respectively arranged in the fixed clamping grooves and welded into a whole; and a discharge groove parallel to the axis of the drill rod is respectively arranged among the plurality of fixed clamping grooves at the end part of the drill rod, and the discharge groove is communicated with the spiral chip groove. In this patent, the drill bit is the pointed end, beats easily when using, is unfavorable for the location, and after long-time use, pointed end wearing and tearing, location effect is worse.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a device for setting the height between the main blade and the auxiliary blade; the positioning is accurate, the processing quality and the processing efficiency are improved, the chip removal efficiency can be improved, and the heating and falling of the cutter head are avoided.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
A cross alloy electric hammer drill comprises a drill rod and a tool bit arranged at the end part of the drill rod through a fixing structure; the drill rod is provided with a spiral chip groove; the tool bit comprises a cross-shaped connecting part connected with the drill rod and a cutting edge arranged on the connecting part; the blades comprise main blades and auxiliary blades which are arranged at intervals; wherein, the main blade converges towards the center to form a straight positioning part; the diameter D of the main cutting edge is 0.3mm-0.5mm larger than the diameter D of the auxiliary cutting edge; the thicknesses of the main blade and the auxiliary blade are consistent; the height h 1 of the main blade is 1.0mm-2.0mm higher than the height h 2 of the auxiliary blade. The positioning part formed by converging the main cutting edges is arranged in a straight shape, the cutter head is in direct contact with the contact surface to be drilled stably, the cutter head can be fully abutted with the contact surface to be drilled under the pulse hammering force of the electric hammer, the drill is not askew, the head of the drill bit linearly enters the object to be drilled and does not radially jump, the positioning function is better when the drill bit drills, and the vibration is obviously smaller when the drill bit drills; and the diameter of the main blade is larger than that of the auxiliary blade, the main blade is higher than that of the auxiliary blade, and the main blade is firstly cut when drilling, and the auxiliary blade is used for repairing, so that the drilling quality is improved.
Further, the round angle R between the connecting parts is set to be 0.3mm-3.2mm. The fillet avoids included angle stress generated in the compression molding, alloy welding and heat treatment processes of the cross tool bit.
Further, the fixing structure comprises a connecting groove matched with the connecting part; the width of the connecting groove and the width of the connecting part are 0.1mm-0.2mm. The tool bit can be conveniently installed and welded after being installed, and the service life of the tool bit after being welded is guaranteed.
Further, the length h 3 of the head of the drill rod and the height h 1 of the main cutting edge are 1.0mm-2.0mm higher. This arrangement is advantageous in that chips can be smoothly discharged through the junk slots.
Further, the main blade and the auxiliary blade are respectively provided with cutting angles alpha 1 and alpha 2; alpha 1 is 53-63 degrees, and alpha 2 is 28-38 degrees. Reasonable structure, convenient and quick cutting, sharp cutting angle, high drilling speed and good wear resistance.
Further, the cutting angle α 1 is 53 °, and the cutting angle α 2 is 28 °. The cutting angle is sharp, the drilling speed is high, and the wear resistance is good.
Further, the diameter D of the main blade is 0.3mm larger than the diameter D of the auxiliary blade. The structure is reasonable.
Further, the height h 1 of the main blade is 1.0mm higher than the height h 2 of the auxiliary blade. The structure is reasonable.
Compared with the prior art, the utility model has the advantages that: accurate positioning, improved processingquality and machining efficiency, can improve chip removal efficiency simultaneously, avoid the fever of tool bit to drop.
Drawings
Fig. 1 is a schematic view of the structure of the electric hammer drill of the present utility model.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic view of the structure of the tool bit of the present utility model.
Fig. 4 is a top view of fig. 3.
In the figure:
1. A drill rod; 2. a fixed structure; 3. a cutter head; 4. a chip removal groove; 5. a connection part; 6. a main blade; 7. an auxiliary blade; 8. a positioning part; 9. and a connecting groove.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 to 4, in an embodiment of a cross alloy electric hammer drill according to the present utility model, the electric hammer drill includes a drill rod 1 and a bit 3 provided at an end of the drill rod 1 by a fixing structure 2; the drill rod 1 is provided with a spiral chip groove 4, the tool bit 3 comprises a cross-shaped connecting part 5 connected with the drill rod 1 and blades arranged on the connecting part 5, the blades comprise a main blade 6 and an auxiliary blade 7 which are arranged at intervals, and the main blade 6 converges towards the center to form a straight positioning part 8; the diameter D of the main blade 6 is 0.3mm larger than the diameter D of the auxiliary blade 7, the thicknesses of the main blade 6 and the auxiliary blade 7 are identical, and the height h 1 of the main blade 6 is 1.0mm higher than the height h 2 of the auxiliary blade 7. The positioning part 8 formed by converging the main cutting edges 6 is arranged in a straight shape, the cutter head 3 is in direct contact with the contact surface to be drilled stably, the cutter head 3 can be fully abutted with the contact surface to be drilled under the pulse hammering force of the electric hammer, the drill is not askew, the head of the drill bit linearly enters the object to be drilled and does not jump radially, the positioning function is good when the drill bit drills, and the vibration is obviously smaller when the drill bit drills; the diameter of the main blade 6 is larger than that of the auxiliary blade 7, the height of the main blade 6 is higher than that of the auxiliary blade 7, the main blade 6 firstly cuts when drilling, the auxiliary blade 7 repairs the hole, the drilling quality is improved, and when the main blade 6 cuts, a gap exists between the auxiliary blade 7 and the hole wall drilled by the main blade 6, so that the chips can be conveniently discharged, the extrusion of the blades and the chips is avoided, the temperature control of the cutter head 3 is facilitated, and the service life can be prolonged.
Referring to fig. 1 to 4, in the embodiment of the cross alloy electric hammer drill of the present utility model, the basic portion is identical to the above embodiment, and is not repeated herein, in the embodiment, the connecting portions 5 are set to have rounded corners R of 0.3mm to 3.2mm, and the rounded corners avoid included angle stress generated in the press molding, alloy welding and heat treatment processes of the cross tool bit 3; meanwhile, the fixing structure 2 comprises a connecting groove 9 matched with the connecting part 5, and the width of the connecting groove 9 and the width of the connecting part 5 are 0.1mm, so that the installation of the cutter head 3 and the welding after the installation can be facilitated, and the service life after the welding is ensured; and the length h 3 of the head of the drill rod 1 and the height h 1 of the main cutter blade 6 are 1.0mm, so that chips can be smoothly discharged through the chip removal groove 4. In this embodiment, the main cutting edge 6 and the auxiliary cutting edge 7 are respectively provided with a cutting angle α 1 of 53 ° and a cutting angle α 2 of 28 °, which has a reasonable structure, convenient and quick cutting, sharp cutting angle, high drilling speed and good wear resistance.
The above embodiments are merely illustrative embodiments of the present utility model, but the technical features of the present utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present utility model are included in the scope of the present utility model.
Claims (9)
1. A cross alloy electric hammer drill comprises a drill rod and a tool bit arranged at the end part of the drill rod through a fixing structure; the drill rod is provided with a spiral chip groove; the method is characterized in that: the tool bit comprises a cross-shaped connecting part connected with the drill rod and a cutting edge arranged on the connecting part; the blades comprise main blades and auxiliary blades which are arranged at intervals;
Wherein, the main blade converges towards the center to form a straight positioning part; the diameter D of the main cutting edge is 0.3mm-0.5mm larger than the diameter D of the auxiliary cutting edge; the thicknesses of the main blade and the auxiliary blade are consistent; the height h 1 of the main blade is 1.0mm-2.0mm higher than the height h 2 of the auxiliary blade.
2. The cross alloy electric hammer drill according to claim 1, wherein: the connecting parts are arranged to be 0.3mm-3.2mm in a round angle R.
3. The cross alloy electric hammer drill according to claim 1 or 2, wherein: the fixing structure comprises a connecting groove matched with the connecting part; the width of the connecting groove and the width of the connecting part are 0.1mm-0.2mm.
4. The cross alloy electric hammer drill according to claim 1 or 2, wherein: the length h 3 of the head of the drill rod and the height h 1 of the main cutter blade are 1.0mm-2.0mm.
5. A cross alloy electric hammer drill according to claim 3, wherein: the length h 3 of the head of the drill rod and the height h 1 of the main cutter blade are 1.0mm-2.0mm.
6. The cross alloy electric hammer drill according to claim 1 or 2, wherein: the main blade and the auxiliary blade are respectively provided with cutting angles alpha 1 and alpha 2; alpha 1 is 53-63 degrees, and alpha 2 is 28-38 degrees.
7. The cross-alloy electric hammer drill according to claim 6, wherein: the cutting angle α 1 is 53 °, and the cutting angle α 2 is 28 °.
8. The cross alloy electric hammer drill according to claim 1 or 2, wherein: the diameter D of the main cutting edge is 0.3mm greater than the diameter D of the auxiliary cutting edge.
9. The cross alloy electric hammer drill according to claim 1 or 2, wherein: the height h 1 of the main blade is 1.0mm higher than the height h 2 of the auxiliary blade.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221064564U true CN221064564U (en) | 2024-06-04 |
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| GR01 | Patent grant |