Drilling bit of tapping machine

Abstract

The utility model discloses a tapping machine drill bit which comprises a drill bit body, a metal tool bit is fixedly installed on the top of the drill bit body, a discharging cavity is formed in one side of the metal tool bit, cooling holes are formed in all sides of the interior of the discharging cavity, a cooling cavity is formed in the metal tool bit, the cooling cavity is connected with the cooling holes in a penetrating mode, and a conveying cavity is formed in the drill bit body. An anti-blocking mechanism is arranged in the discharging cavity, and a loading and unloading mechanism is arranged between the drill bit body and the metal tool bit. The anti-blocking drill bit has the advantages that the cooling cavity in the metal tool bit can be continuously cleaned in a transmission mode through the anti-blocking mechanism when the drill bit rotates to drill, so that drilled chippings are effectively prevented from entering the cooling cavity and blocking a cooling hole, the cooling efficiency and stability of the drill bit are remarkably improved when the blast furnace tap hole is drilled, and the service life of the drill bit is prolonged. The drill bit is kept in a good working state, and the service life of the drill bit is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to drilling equipment technical field, specifically, relate to a machine drill. BACKGROUND

[0002] In the production process of blast furnace ironmaking, the tapping link is very important. When the blast furnace completes the ironmaking operation, the tapping hole needs to be drilled by the opening machine to open the tapping channel and ensure that the molten iron can flow out of the blast furnace and enter the subsequent ironmaking process. This drilling process not only affects the efficiency of tapping, but also directly affects the continuity and stability of the entire ironmaking production.

[0003] The existing opening machine drill is the key tool to complete the drilling task of the tapping hole. In actual use, due to the extremely high temperature of the tapping hole itself, and the intense friction between the drill and the inner wall of the tapping hole during high-speed rotation drilling, a large amount of heat is generated. The high temperature will rapidly reduce the performance of the drill material, causing the drill to wear out, which seriously affects the quality and efficiency of drilling.

[0004] In order to solve this problem, the existing opening machine drill usually adopts the design of built-in cooling channel, which sprays cooling water to the working drill to reduce the temperature and protect the drill from overheating. Although the cooling channel can alleviate this problem to some extent, as the drilling operation proceeds, the debris generated is easy to enter and block the end of the cooling channel, causing the cooling water to be unable to flow normally, which seriously affects the cooling effect of the drill. Once the cooling effect is reduced, the temperature of the drill rises rapidly, which will still cause the hardness and wear resistance of the drill to decrease, thereby shortening the service life of the drill. TECHNICAL SOLUTION

[0005] In view of the problems in the related art, the utility model provides an opening machine drill to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the specific technical scheme as follows:

[0007] An opening machine drill comprises a drill body, a metal cutter head fixedly installed at the top of the drill body, a discharge cavity opened on one side of the metal cutter head, cooling holes opened on each side inside the discharge cavity, a cooling cavity opened inside the metal cutter head, the cooling cavity being in through connection with the cooling holes, a conveying cavity opened inside the drill body, an anti-blocking mechanism arranged inside the discharge cavity, and a mounting and dismounting mechanism arranged between the drill body and the metal cutter head.

[0008] Further, in order to achieve the anti-blocking effect of the cooling hole, the anti-blocking mechanism comprises a transmission groove formed at the center of the top of the metal drill head, a transmission shaft is rotatably installed in the transmission groove, a cleaning rod is fixedly connected to one end of the transmission shaft and rotatably penetrates through the transmission groove, the cleaning rod is in sliding fit with the discharge cavity, one end of the transmission shaft is fixedly connected with an extrusion plate, and in order to increase the friction force when the extrusion plate contacts the iron notch during drilling, anti-skid lines are arranged on the surface of the extrusion plate.

[0009] Further, in order to achieve the quick connection of the drill bit body and the metal drill head, the detachable mechanism comprises a connecting groove formed at one end of the drill bit body, a positioning rod is fixedly connected to one end of the metal drill head and is in fit with the connecting groove, contraction grooves are formed at both sides of the connecting groove, a limiting block is installed in the contraction groove, limiting grooves are formed at both sides of the positioning rod and are in fit with one end of the limiting block.

[0010] Further, in order to achieve the portable dismounting of the drill bit body and the metal drill head, a sliding groove is formed at one side of the contraction groove, a transmission rod is slidably installed in the sliding groove, an extrusion inclined block is fixedly connected to one end of the transmission rod and is in fit with the inclined surface of the limiting block.

[0011] Further, in order to facilitate the extrusion transmission of the transmission rod, an adjusting groove is formed at one end of the drill bit body, a telescopic ring is slidably installed in the adjusting groove, a sealing cover is fixedly connected to one end of the telescopic ring and is fixedly connected with one end of the transmission rod.

[0012] Further, in order to facilitate the fixing and installation of the drill bit body on the opening machine, a positioning ring is fixedly connected to one end of the drill bit body, positioning holes are formed at both sides of the surface of the positioning ring.

[0013] Further, in order to achieve the automatic resetting of the limiting block when it is not subjected to a pushing force, reset springs are fixedly connected to both sides of the contraction groove, and one end of the reset spring is fixedly connected with the limiting block.

[0014] Further, in order to facilitate the discharge of the drilling debris, a debris discharge groove is formed on the surface of the drill bit body.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. By means of the anti-blocking mechanism, when the metal drill head drills the iron notch, the friction force between the extrusion plate and the drilling surface can make the transmission shaft and the cleaning rod be stationary relative to the rotating metal drill head, and the cleaning rod can continuously scrape and clean the inside of the rapidly rotating cooling cavity, so that the drilling debris is effectively prevented from entering the cooling cavity and causing the cooling hole to be blocked, the cooling efficiency and stability of the drill bit during the drilling of the iron notch of the blast furnace are significantly improved, the drill bit can maintain a good working state, and the service life of the drill bit is prolonged.

[0017] 2. Through the loading and unloading mechanism, the drill body and the metal cutter can be quickly installed and disassembled, when the metal cutter is worn after use, the whole drill does not need to be replaced, only the metal cutter on the drill body needs to be replaced, the drill can be used again, the service life of the drill is effectively improved, and the cost of drilling processing is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 is a surface structure schematic view of an opening machine drill bit according to an embodiment of the present application;

[0020] Figure 2 is a bottom view of an opening machine drill bit according to an embodiment of the present application;

[0021] Figure 3 is a connection structure schematic view of a drill body and a metal cutter in an opening machine drill bit according to an embodiment of the present application;

[0022] Figure 4 is an internal cross-sectional view of a drill body in an opening machine drill bit according to an embodiment of the present application;

[0023] Figure 5 is Figure 4 is an enlarged schematic view of A in FIG.

[0024] Figure 6 is an internal cross-sectional view of a metal cutter in an opening machine drill bit according to an embodiment of the present application;

[0025] Figure 7 is an internal cross-sectional view of a discharge cavity after rotation of a cleaning rod in an opening machine drill bit according to an embodiment of the present application.

[0026] In the drawings:

[0027] 1, drill body; 2, metal cutter; 3, discharge cavity; 4, cooling hole; 5, cooling cavity; 6, conveying cavity; 7, anti-blocking mechanism; 701, transmission groove; 702, transmission shaft; 703, cleaning rod; 704, extrusion plate; 8, mounting and dismounting mechanism; 801, connecting groove; 802, positioning rod; 803, contraction groove; 804, limiting block; 805, limiting groove; 806, sliding groove; 807, transmission rod; 808, extrusion inclined block; 9, adjusting groove; 10, telescopic ring; 11, sealing cover; 12, positioning ring; 13, positioning hole; 14, return spring; 15, anti-skid pattern; 16, chip removal groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] According to the embodiments of the present application, a machine drill bit is provided.

[0030] Embodiment one:

[0031] As Figures 1-7As shown, according to the utility model discloses a kind of opening machine drill bits, including hard alloy material drill bit body 1, the top of drill bit body 1 is fixedly installed with metal cutter head 2, for drilling to blast furnace tapping hole;Discharge cavity 3 is opened in one side of metal cutter head 2, two pairs of cooling holes 4 are opened in each side inside discharge cavity 3, cooling cavity 5 is opened in the inside of metal cutter head 2, cooling cavity 5 is connected with cooling hole 4, conveying cavity 6 is opened in the inside of drill bit body 1, cooling water is injected into cooling cavity 5 in metal cutter head 2 by conveying cavity 6, so that cooling water is discharged from discharge cavity 3 by cooling hole 4, the metal cutter head 2 of realization quick cooling when drilling is carried out;Discharge cavity 3 is equipped with anti-blocking mechanism 7 inside, for continuously cleaning in discharge cavity 3, prevent drilling debris from blocking cooling hole 4;Drill bit body 1 and metal cutter head 2 are equipped with dismounting mechanism 8 between, for realizing the free dismounting between drill bit body 1 and metal cutter head 2;Anti-blocking mechanism 7 includes the transmission groove 701 opened in the top center position of metal cutter head 2, transmission shaft 702 is rotatably installed in the inside of transmission groove 701, one end of transmission shaft 702 is rotatably connected with cleaning rod 703 through transmission groove 701, cleaning rod 703 is slidably connected with discharge cavity 3, one end of transmission shaft 702 is fixedly connected with extrusion plate 704, anti-skid pattern 15 is arranged on the surface of extrusion plate 704, when metal cutter head 2 drills tapping hole, the friction force when extrusion plate 704 contacts with drilling surface, can make transmission shaft 702 and cleaning rod 703 relative to rotating metal cutter head 2 stationary, in turn make cleaning rod 703 continuously scrape and clean inside cooling cavity 5 of quick rotation, so as to effectively prevent drilling debris from entering into cooling cavity 5, cause the blockage of cooling hole 4.

[0032] As Figures 1-7As shown, the mounting and dismounting mechanism 8 comprises a connecting groove 801 formed at one end of the drill bit body 1, a positioning rod 802 fixedly connected to one end of the metal drill head 2, the positioning rod 802 being matched with the connecting groove 801, a pair of contraction grooves 803 being formed at two sides of the connecting groove 801, a limiting block 804 being slidingly installed inside each of the contraction grooves 803, a pair of limiting grooves 805 being formed at two sides of the positioning rod 802, the limiting grooves 805 being matched with one end of the limiting block 804, a sliding groove 806 being formed at one side of the contraction groove 803, a transmission rod 807 being slidingly installed inside the sliding groove 806, an extrusion inclined block 808 being fixedly connected to one end of the transmission rod 807, one side of the extrusion inclined block 808 being matched with an inclined surface of the limiting block 804, when the positioning rod 802 is matched and installed in the connecting groove 801, the extrusion inclined block 808 is pushed to move one end of the limiting block 804 into the limiting groove 805 by pushing the transmission rod 807, so that the metal drill head 2 is quickly connected with the drill bit body 1; the drill bit body 1 is provided with an adjusting groove 9 at one end, the adjusting groove 9 is slidingly installed with an elastic ring 10, one end of the elastic ring 10 is fixedly connected with a sealing cover 11, one end of the sealing cover 11 is fixedly connected with the transmission rod 807, the sealing cover 11 can drive the two transmission rods 807 to synchronously move in the sliding groove 806 by pushing the sealing cover 11; the drill bit body 1 is fixedly connected with a positioning ring 12 at one end, the positioning ring 12 is provided with a positioning hole 13 at two sides of the surface, so as to conveniently fix and install the drill bit body 1 on a drilling machine through screws or bolts, and the sealing cover 11 can be extruded and limited after installation; the limiting block 804 is fixedly connected with a reset spring 14 at two sides inside the contraction groove 803, one end of the reset spring 14 is fixedly connected with the limiting block 804, when the extrusion inclined block 808 does not extrude and push one side of the limiting block 804, the elastic force of the reset spring 14 can pull one end of the limiting block 804 to slide out of the limiting groove 805; the surface of the drill bit body 1 is provided with a spiral chip removal groove 16, so as to conveniently discharge the chippings generated by drilling.

[0033] In order to facilitate the understanding of the above technical scheme of the present application, the working principle or operation mode of the present application in the actual process will be described in detail below.

[0034] In actual use, the positioning rod 802 at one end of the metal cutter head 2 is matched and installed in the connecting groove 801 at one end of the drill bit body 1, the sealing cover 11 is pushed to enable the two transmission rods 807 to move synchronously in the sliding groove 806, and then the extrusion inclined block 808 pushes one end of the limiting block 804 to move into the limiting groove 805, so that the metal cutter head 2 is quickly connected with the drill bit body 1, the drill bit body 1 is fixed and installed on the transmission shaft 702 of the opening machine through the positioning ring 12 and the positioning hole 13 at one end by using bolts, when the metal cutter head 2 drills the iron notch, the frictional force when the extrusion plate 704 contacts the drilling surface can enable the transmission shaft 702 and the cleaning rod 703 to be stationary relative to the rotating metal cutter head 2, and then the cleaning rod 703 continuously scrapes and cleans the inside of the cooling cavity 5 which rotates quickly, so that the drilled debris is effectively prevented from entering the cooling cavity 5 and causing the cooling hole 4 to be blocked.

[0035] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An open hole drill bit, characterized by, The utility model provides a drill bit body (1), the top fixed mounting of drill bit body (1) has metal cutter (2), the side of metal cutter (2) is opened to discharge cavity (3), and each side of the inside of discharge cavity (3) is opened to cooling hole (4), and the inside of metal cutter (2) is opened to cooling cavity (5), and cooling cavity (5) is connected with cooling hole (4) through, and the inside of drill bit body (1) is opened to delivery cavity (6), and the inside of discharge cavity (3) is equipped with anti -blocking mechanism (7), and between drill bit body (1) and metal cutter (2) is equipped with dismounting mechanism (8).

2. An open hole drill bit according to claim 1, wherein, Anti -blocking mechanism (7) includes the transmission groove (701) of the top center position of metal cutter (2) opening, the inside rotatable mounting of transmission groove (701) has transmission shaft (702), and one end of transmission shaft (702) rotatable passes through transmission groove (701) and is fixedly connected with cleaning rod (703), and cleaning rod (703) and discharge cavity (3) are slidably connected, and one end of transmission shaft (702) is fixedly connected with extrusion plate (704), and the surface of extrusion plate (704) is equipped with anti -slip line (15).

3. An open hole drill bit according to claim 1, wherein, Dismounting mechanism (8) includes the connecting groove (801) of one end of drill bit body (1) opening, and one end of metal cutter (2) is fixedly connected with positioning rod (802), and positioning rod (802) is matched with connecting groove (801), and both sides of connecting groove (801) are opened to shrink groove (803), and the inside mounting of shrink groove (803) has limit block (804), and both sides of positioning rod (802) are opened to limit groove (805), and limit groove (805) is matched with one end of limit block (804).

4. An open hole drill bit according to claim 3, wherein, The side of shrink groove (803) is opened to sliding slot (806), and the inside sliding installation of sliding slot (806) has transmission rod (807), and one end of transmission rod (807) is fixedly connected with extrusion inclined block (808), and one side of extrusion inclined block (808) is matched with the inclined surface of limit block (804).

5. An open hole drill bit according to claim 4, wherein, One end of drill bit body (1) is opened to adjusting groove (9), and the inside sliding installation of adjusting groove (9) has telescopic ring (10), and one end of telescopic ring (10) is fixedly connected with sealing cover (11), and sealing cover (11) is fixedly connected with one end of transmission rod (807).

6. An open hole drill bit according to claim 1, wherein, One end of drill bit body (1) is fixedly connected with positioning ring (12), and both sides of the surface of positioning ring (12) are opened to positioning hole (13).

7. An open hole drill bit according to claim 3, wherein, The inside of shrink groove (803) is fixedly connected with reset spring (14) on both sides, and one end of reset spring (14) is fixedly connected with limit block (804).

8. An open hole drill bit according to claim 2, wherein, The surface of drill bit body (1) is opened to chip removal groove (16).

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