CN212249858U - Novel high-efficient longlife running-in drill bit - Google Patents
Novel high-efficient longlife running-in drill bit Download PDFInfo
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- CN212249858U CN212249858U CN202021056766.9U CN202021056766U CN212249858U CN 212249858 U CN212249858 U CN 212249858U CN 202021056766 U CN202021056766 U CN 202021056766U CN 212249858 U CN212249858 U CN 212249858U
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Abstract
The utility model discloses a novel high-efficiency long-life running-in drill bit, which comprises a cross joint, a tool bit fixing plate and tool bits, wherein the number of the tool bits is four, namely two long double-edged tool bits which are oppositely arranged and two short double-edged tool bits which are oppositely arranged; the long double-edge cutter head comprises a long cutter body and a long double-edge, the long double-edge is fixed on the long cutter body, a plurality of first ventilation holes and a plurality of second ventilation holes are formed in the long cutter body and communicated with the first ventilation holes and the outside, and the first ventilation holes are horizontally arranged and communicated with the long double-edge; the short double-edged tool bit comprises a short tool body and short double-edged blades, the short double-edged blades are fixed on the short tool body, third ventilation holes are formed in the short tool body, and the third ventilation holes are communicated with the short double-edged blades and the outside. The utility model discloses increased the firm in connection nature of fixed plate and joint, the nothing takes off and splits the phenomenon, has improved efficiency through the double-edged mouth, has added the ventilation hole simultaneously, makes the blade work under refrigerated state, has improved the wearability and the life of cutting edge.
Description
Technical Field
The utility model belongs to the technical field of the running-in drill bit technique and specifically relates to a novel high-efficient longlife running-in drill bit is related to.
Background
The iron tap hole of the iron-making blast furnace is made of high-strength refractory materials, during tapping, the pressure in the furnace causes the iron tap hole to generate a spray explosion state, and after tapping molten iron, pasty residual iron is fully adhered around the iron tap hole, so that secondary plugging is influenced. The function of using the running-in drill bit is to clean the iron slag remained on the taphole and prepare for the second time of plugging. Because the existing running-in drill bit is too simple, the time is long, the efficiency is low, and the normal production progress is influenced because the time for cleaning an iron notch is more than ten minutes. The cross joint of the threaded connection of the prior running-in drill bit is a round pipe in appearance, and a fixing plate is welded on the cross joint and is not firm, so that the cross joint is frequently cracked when in use; the knife edge is a single-edge knife edge, so that the efficiency is low; meanwhile, the service life is short, and the replacement is needed frequently. In view of the above, it is desirable to design a new type of efficient long-life running-in drill bit.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel high-efficient longlife running-in drill bit has increased the firm in connection nature of fixed plate with the joint, does not have the phenomenon of splitting, has improved efficiency through the double-edged mouth, has added the ventilation hole simultaneously, makes the blade work under refrigerated state, has improved the wearability and the life of cutting edge.
In order to achieve the purpose, the utility model provides a novel high-efficiency long-life running-in drill bit, which comprises a cross joint, a tool bit fixing plate arranged on the cross joint and tool bits arranged on the tool bit fixing plate, wherein the number of the tool bits is four, namely two long double-edged tool bits which are oppositely arranged and two short double-edged tool bits which are oppositely arranged;
the long double-edge cutter head comprises a long cutter body and a long double-edge, the long double-edge is fixed on the long cutter body, a first vent hole and a plurality of second vent holes are formed in the long cutter body and communicated with the first vent hole and the outside, and the first vent holes are horizontally arranged and communicated with the long double-edge;
the short double-blade cutter head comprises a short cutter body and short double-blades, the short double-blades are fixed on the short cutter body, a third ventilation hole is formed in the short cutter body, and the third ventilation hole is communicated with the short double-blades and the outside;
the cross joint is arranged to be of a square structure.
Preferably, the cross joint is welded with the cutter head fixing plate and is connected with the cutter head fixing plate through flat welding and fillet welding.
Preferably, the second vent hole and the third vent hole are both obliquely arranged.
Preferably, the cutter head fixing plate is arranged in a cross-shaped structure.
Preferably, the long cutter body and the short cutter body are fixed on the cutter head fixing plate through bolts.
Therefore, the utility model adopts the above structure a novel high-efficient longlife running-in drill bit has increased the firm in connection nature of fixed plate with the joint, does not have the phenomenon of splitting, has improved efficiency through the double-edged mouth, has added the ventilation hole simultaneously, makes the blade work under refrigerated state, has improved the wearability and the life of cutting edge.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a novel high-efficiency long-life running-in drill bit of the present invention;
fig. 2 is a bottom view of an embodiment of the novel high-efficiency long-life running-in drill of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
The embodiment of the utility model provides a novel high-efficiency long-life running-in drill bit, which comprises a cross joint 1, a tool bit fixing plate 2 arranged on the cross joint 1 and tool bits arranged on the tool bit fixing plate 2, wherein the tool bits are four, namely two long double-edged tool bits 3 arranged oppositely and two short double-edged tool bits 4 arranged oppositely; the long double-edge cutter head 3 comprises a long cutter body 31 and long double-edge edges 32, the long double-edge edges 32 are fixed on the long cutter body 31, a first vent hole 33 and a second vent hole 34 are formed in the long cutter body 31, the number of the second vent holes 34 is multiple, the first vent holes 33 are communicated with the outside, and the first vent holes 33 are horizontally arranged and communicated with the long double-edge edges 32; the short double-edge cutter head 4 comprises a short cutter body 41 and a short double-edge 42, the short double-edge 42 is fixed on the short cutter body 41, a third ventilation hole 43 is formed in the short cutter body 41, and the third ventilation hole 43 is communicated with the short double-edge 42 and the outside; the cross joint 1 is arranged in a square structure. The cross joint of the original threaded connection is designed into a square structure, so that the fixed plate is welded firmly, the connection between the fixed plate and the fixed plate is flat welding and fillet welding, the stress is quite firm, and the phenomenon of spalling is avoided; the original single-edge knife edge is changed into four double-edge knife edges, so that the efficiency is greatly improved. In addition, the long cutter body and the short cutter body are provided with the vent holes, so that the blade works in a cooling state, the abrasive resistance of the cutting edge is improved, and the service life of the cutting edge is prolonged. Through the improvements, the original cleaning of one taphole takes more than ten minutes, the time is shortened to 3-5 minutes, the work efficiency is doubled, the original service life is prolonged by 1-2 times, the current service life is prolonged by 3-5 times, and the service life is prolonged by more than two times.
The cross joint 1 is welded with the tool bit fixing plate 2, and the two are welded by flat welding and fillet welding, so that the stress is quite firm, and the phenomenon of spalling is avoided.
The second ventilation hole 34 and the third ventilation hole 43 are obliquely arranged, so that ventilation is smooth.
The cutter head fixing plate 2 is arranged in a cross-shaped structure.
Therefore, the utility model adopts the above structure a novel high-efficient longlife running-in drill bit has increased the firm in connection nature of fixed plate with the joint, does not have the phenomenon of splitting, has improved efficiency through the double-edged mouth, has added the ventilation hole simultaneously, makes the blade work under refrigerated state, has improved the wearability and the life of cutting edge.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. A novel high-efficient longlife running-in drill bit which is characterized in that:
the tool bit fixing plate is arranged on the cross joint, and the tool bits are arranged on the tool bit fixing plate, wherein the number of the tool bits is four, and the four tool bits are respectively two long double-edged tool bits which are oppositely arranged and two short double-edged tool bits which are oppositely arranged;
the long double-edge cutter head comprises a long cutter body and a long double-edge, the long double-edge is fixed on the long cutter body, a first vent hole and a plurality of second vent holes are formed in the long cutter body and communicated with the first vent hole and the outside, and the first vent holes are horizontally arranged and communicated with the long double-edge;
the short double-blade cutter head comprises a short cutter body and short double-blades, the short double-blades are fixed on the short cutter body, a third ventilation hole is formed in the short cutter body, and the third ventilation hole is communicated with the short double-blades and the outside;
the cross joint is arranged to be of a square structure.
2. A novel efficient long-life running-in drill bit according to claim 1, characterized in that: the cross joint is welded with the tool bit fixing plate and is connected with the tool bit fixing plate through flat welding and fillet welding.
3. A novel efficient long-life running-in drill bit according to claim 2, characterized in that: the second ventilation hole and the third ventilation hole are obliquely arranged.
4. A novel high efficiency long life running-in bit according to claim 3 wherein: the cutter head fixing plate is of a cross structure.
5. The novel high-efficiency long-life running-in drill bit as claimed in claim 4, characterized in that: the long cutter body and the short cutter body are fixed on the cutter head fixing plate through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021056766.9U CN212249858U (en) | 2020-06-10 | 2020-06-10 | Novel high-efficient longlife running-in drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021056766.9U CN212249858U (en) | 2020-06-10 | 2020-06-10 | Novel high-efficient longlife running-in drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212249858U true CN212249858U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021056766.9U Active CN212249858U (en) | 2020-06-10 | 2020-06-10 | Novel high-efficient longlife running-in drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212249858U (en) |
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2020
- 2020-06-10 CN CN202021056766.9U patent/CN212249858U/en active Active
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