Efficient cutting tungsten steel alloy drill bit

Abstract

The invention relates to the technical field of drill bit production, in particular to an efficient cutting tungsten steel alloy drill bit which comprises a connecting component, a positioning top frame is rotatably mounted at the top end of an outer ring of the connecting component, a supporting bottom frame is fixedly mounted at the bottom end of the positioning top frame, and an air injection cavity is fixedly mounted at the bottom end of the supporting bottom frame. Communicating pipes are symmetrically and fixedly installed between the air injection cavity and the positioning top frame, the connecting part comprises a limiting device, a synchronizing device and a matching device, the matching device is slidably inserted into the center of the bottom end of the limiting device, the synchronizing device is slidably inserted into the outer ring of the limiting device, and the synchronizing device comprises a synchronizing ring, a positioning inserting plate, a guiding transverse plate and a connecting rope; the synchronous ring is fixedly installed at the top end of the positioning insertion plate, the guide transverse plate is fixedly installed on the outer side, away from the connecting ropes, of the positioning insertion plate, and the connecting ropes are symmetrically and fixedly installed at the opposite ends of the positioning insertion plate. And through the arrangement of the connecting part, the purpose that the tungsten steel drill bit can be rapidly and stably connected is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of drill bit production, in particular to a high-efficiency cutting tungsten steel alloy drill bit. Background Art

[0002] Tungsten steel drill bit is a drill bit with extremely high hardness. Due to its hard texture, tungsten steel drill bits are often used in industrial fields. At the same time, tungsten steel drill bits have the characteristics of high strength, good wear resistance and fast cutting speed, which makes the application field of tungsten steel drill bits very wide.

[0003] For example, the hard high-strength tungsten steel alloy drill bit with Chinese patent publication number CN217018743U includes a drill body, a connecting block is fixed at the end of the drill body, and the connecting block is embedded in the casing, and limiting blocks are fixed on both sides of the connecting block, and the limiting blocks pass through the casing and the casing respectively, and the casing is mounted on the surface of the casing.

[0004] At present, when installing tungsten steel drill bits on the market, the connection between the drill bit and the rotating shaft is not reliable due to the screwing and clamping method adopted. When the rotation speed is fast, the drill bit may become loose. Therefore, a device is needed to improve the above problem. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a high-efficiency cutting tungsten steel alloy drill bit.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a high-efficiency cutting tungsten steel alloy drill bit, comprising a connecting component, a positioning top frame is rotatably installed on the top of the outer ring of the connecting component, a supporting bottom frame is fixedly installed on the bottom end of the positioning top frame, an injection cavity is fixedly installed on the bottom end of the supporting bottom frame, a connecting pipe is symmetrically fixedly installed between the injection cavity and the positioning top frame, the connecting component comprises a limiting device, a synchronizing device and a matching device, the matching device is slidably plugged in the bottom end center of the limiting device, the synchronizing device is slidably plugged in the outer ring of the limiting device, the synchronizing device comprises a synchronizing ring, a positioning plug plate, a guide cross plate and a connecting rope, the synchronizing ring is fixedly installed on the top of the positioning plug plate, the guide cross plate is fixedly installed on the outer side of the positioning plug plate away from the connecting rope, the connecting rope is symmetrically fixedly installed on the opposite end of the positioning plug plate, the matching device comprises a docking key and a tungsten steel drill bit, and the tungsten steel drill bit is fixedly installed at the bottom end center of the docking key.

[0007] The locking plate is fixedly mounted on the locking plate, wherein the locking plate is secured on a central axis and the locking means is configured to lock the locking plate against a locking cam.

[0008] Specifically, the docking key is slidably inserted into the docking groove, the guide cross plate is slidably sleeved on the guide rail, the end of the connecting rope away from the positioning plug plate passes through the connecting seat and is fixedly connected to the top of the end of the connecting plate away from the docking groove, and the positioning top frame is rotatably sleeved on the top of the outer ring of the connecting seat.

[0009] Specifically, a placement groove is provided at the inner bottom end of the connecting seat, and the outer circle of the connecting plate is fitted with the inner wall of the placement groove, a through hole compatible with the connecting rope is provided on the top of the placement groove away from the docking groove, and a socket compatible with the positioning plug plate is provided at the top center of the docking tube, the bottom end of the limit rod and the top surface of the docking key are both provided with a 45° slope, and a circular hole is provided on the top of the outer circle of the docking key, the bottom end of the guide cross plate away from the connecting rope and the top surface of the limit slide plate close to the guide rail are both set with a 45° slope, and the limit slide plate is vertically aligned with the guide cross plate.

[0010] Specifically, the positioning top frame also includes a positioning device and an extending device, and the extending device is slidably inserted inside the bottom end of the positioning device.

[0011] Specifically, the positioning device includes a guide push plate, an extension side frame, a connecting rod, a contact piece, a guide cylinder and a positioning bolt. The guide cylinder is fixedly mounted on the bottom of both ends of the positioning top frame, the positioning bolt is threadedly inserted into the outer bottom end of the positioning top frame, the contact piece is fixedly mounted on the inner center of the positioning bolt, the extension side frame is fixedly mounted on the outer ring of the guide cylinder, the opposite end of the connecting rod is rotatably sleeved on the outer ring of the positioning bolt close to the contact piece, and the guide push plate is fixedly mounted on one end of the connecting rod close to the extension side frame.

[0012] Specifically, the extending device includes an extending bracket, a connecting arm and a connecting substrate. The extending bracket is fixedly installed at the top center of the connecting arm, and the connecting arm is fixedly installed on both sides of the connecting substrate.

[0013] Specifically, guide holes compatible with the connecting rod are provided on both ends of the outer side of the guide cylinder close to the positioning bolts, scale lines are marked on the outer surface of the extension bracket facing away from the connecting base plate, a limit strip is fixedly connected to the outer ring of the extension bracket close to the connecting base plate, and a slot compatible with the limit strip is provided on the inner ring of the guide cylinder.

[0014] Beneficial effects of the present invention:

[0015] First, the present invention can insert the docking key inside the matching device into the docking groove inside the limiting device through the setting of the limiting device, so that the tungsten steel drill bit can be restricted and fixed by the limiting rod, and the function of quickly restricting and positioning the tungsten steel drill bit can be completed. When the limiting rod restricts the tungsten steel drill bit, the positioning plug plate can be indirectly driven to move downward through the first guide plate, so that the limiting rod can implement the anti-slip positioning function from the outside, and the function of quickly restricting and positioning the tungsten steel drill bit can be completed.

[0016] Secondly, the present invention provides a synchronization device so that when the tungsten steel drill bit needs to be taken out, the synchronization ring can be pulled upward to release the tungsten steel drill bit, so that the tungsten steel drill bit can be quickly taken out from the inside of the connecting seat, which is convenient for frequent replacement of the tungsten steel drill bit and completes the work of accurately guiding and taking the tungsten steel drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the connecting component in the present invention from a front perspective;

[0020] Figure 3 It is a cutaway schematic diagram of the restriction device in the present invention;

[0021] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram in the middle;

[0022] Figure 5 It is a front perspective three-dimensional structural diagram of the synchronization device in the present invention;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the matching device in the present invention from the front perspective;

[0024] Figure 7The front perspective perspective structure of the second embodiment of the positioning top frame of the present invention is shown;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the positioning device of the present invention from the bottom perspective;

[0026] Fig. 9 For the present invention Figure 8 A partial enlarged schematic diagram of point B in the middle;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the extension device in the present invention from the front perspective.

[0028] In the figure: 1-connecting component, 2-jet cavity, 3-supporting bottom frame, 4-positioning top frame, 5-connecting pipe, 6-limiting device, 7-synchronizing device, 8-matching device, 9-first guide plate, 10-butt pipe, 11-extension plate, 12-first return spring, 13-connecting plate, 14-limiting rod, 15-docking groove, 16-connecting seat, 17-guide rail, 18-side frame, 19-second return spring, 20-limiting slide plate, 21-second guide plate, 22-synchronizing ring, 23-positioning plug plate, 24-guide cross plate, 25-connecting rope, 26-tungsten steel drill bit, 27-positioning device, 28-extension device, 29-guide push plate, 30-extension side frame, 31-connecting rod, 32-contact sheet, 33-guide cylinder, 34-positioning bolt, 35-extension bracket, 36-connecting arm, 37-connecting base plate, 38-docking key. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] The present invention is further described below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, an efficient cutting tungsten steel alloy drill bit of the present invention comprises a connecting component 1, a positioning top frame 4 is rotatably mounted on the top of the outer ring of the connecting component 1, a supporting bottom frame 3 is fixedly mounted on the bottom end of the positioning top frame 4, a jet cavity 2 is fixedly mounted on the bottom end of the supporting bottom frame 3, a connecting pipe 5 is symmetrically fixedly mounted between the jet cavity 2 and the positioning top frame 4, the connecting component 1 comprises a limiting device 6, a synchronizing device 7 and a matching device 8, the matching device 8 is slidably plugged in the bottom end center of the limiting device 6, the synchronizing device 7 is slidably plugged in the outer ring of the limiting device 6, the synchronizing device 7 comprises a synchronizing ring 22, a positioning plug plate 23, a guide cross plate 24 and a connecting rope 25, the synchronizing ring 22 is fixedly mounted on the top of the positioning plug plate 23, the guide cross plate 24 is fixedly mounted on the outer side of the positioning plug plate 23 away from the connecting rope 25, the connecting rope 25 is symmetrically fixedly mounted on the opposite end of the positioning plug plate 23, the matching device 8 comprises a docking key 38 and a tungsten steel drill bit 26, and the tungsten steel drill bit 26 is fixedly mounted at the bottom end center of the docking key 38.

[0034] like Figure 3 and Figure 4 The limiting device 6 includes a first guide plate 9, a butt joint pipe 10, an extension plate 11, a first return spring 12, a connecting plate 13, a limit rod 14, a butt joint groove 15, a connecting seat 16, a guide rail 17, a side frame 18, a second return spring 19, a limit slide plate 20 and a second guide plate 21. The butt joint groove 15 is arranged at the bottom center of the connecting seat 16, the limit rod 14 is symmetrically slidably inserted into the bottom end of the connecting seat 16, the connecting plate 13 is fixedly mounted on the end of the limit rod 14 away from the butt joint groove 15, the first return spring 12 is fixedly mounted between the connecting plate 13 and the connecting seat 16, the butt joint pipe 10 is fixedly mounted on the end of the limit rod 14 away from the connecting plate 13, and the extension plate 11 is fixedly mounted on the butt joint pipe 10. The connecting pipe 10 is close to the top of the docking groove 15, the first guide plate 9 is fixedly mounted on the top of the connecting pipe 10 away from the extension plate 11, the side frame 18 is fixedly mounted on the outer bottom end of the connecting seat 16 away from the docking groove 15, the guide rail 17 is symmetrically fixedly mounted on the inner two ends of the side frame 18, the second return spring 19 is fixedly mounted on the side end of the side frame 18 away from the connecting seat 16, the limiting slide 20 is fixedly mounted on the outer side of the second return spring 19 away from the connecting seat 16, and the second guide plate 21 is fixedly mounted on the bottom of the side end of the limiting slide 20 away from the connecting seat 16. The outer shapes of the docking groove 15 and the docking key 38 are both hexagonal prisms, which can prevent the docking key 38 from being skewed when moving.

[0035] The docking key 38 is slidably inserted into the inside of the docking groove 15, the guide cross plate 24 is slidably sleeved on the guide rail 17, the end of the connecting rope 25 away from the positioning plug plate 23 passes through the connecting seat 16 and is fixedly connected to the top of the end of the connecting plate 13 away from the docking groove 15, and the positioning top frame 4 is rotatably sleeved on the top of the outer ring of the connecting seat 16, which can prevent the connecting seat 16 from driving the positioning top frame 4 to rotate at the same time when it rotates.

[0036] A placement groove is provided at the inner bottom end of the connecting seat 16, and the outer circle of the connecting plate 13 is fitted with the inner wall of the placement groove, a through hole compatible with the connecting rope 25 is provided on the top of the placement groove away from the docking groove 15, and a socket compatible with the positioning plug plate 23 is provided at the top center of the docking tube 10, the bottom end of the limit rod 14 and the top surface of the docking key 38 are both provided with a 45° slope, and a circular hole is provided on the top of the outer circle of the docking key 38. The bottom end of the guide cross plate 24 away from the connecting rope 25 and the top surface of the limit slide plate 20 close to the guide rail 17 are both set with a 45° slope, and the limit slide plate 20 is vertically aligned with the guide cross plate 24, so as to improve the docking accuracy between the limit slide plate 20 and the guide cross plate 24.

[0037] The working principle of embodiment 1 is as follows: when in use, first connect the positioning top frame 4 to the outer casing of the external drilling rig, and then connect the top of the connecting seat 16 to the shaft inside the external drilling rig. At this time, the tungsten steel drill bit 26 can be moved toward the bottom end of the connecting seat 16 until the docking key 38 is inserted into the docking groove 15. The top sides of the docking key 38 and the bottom end of the limit rod 14 relative to each other are both set at a 45° slope, so that the smoothness of the docking key 38 passing through the limit rod 14 can be improved, and when the docking key 38 passes through the limit rod 14, the limit rod 14 can be driven to move outward, so that the docking tube 10 can be driven to move outward, so that the first guide plate 9 can squeeze the second guide plate 21 to move outward, so that the limit slide plate 20 will be misaligned with the guide cross plate 24. At this time, the positioning plug The plate 23 will move downward, and the two ends of the guide cross plate 24 are sleeved on the guide rail 17, so that the positioning plug plate 23 can be guaranteed to move in a straight line. When the positioning plug plate 23 moves downward, it will fit with the top of the extension plate 11, thereby preventing the positioning plug plate 23 from continuing to move downward. Afterwards, when the docking key 38 is fully inserted into the docking groove 15, the limit rod 14 can be driven to be vertically aligned with the circular hole on the outer side of the docking key 38. At this time, the elasticity of the first return spring 12 will drive the limit rod 14 to move inward quickly until the limit rod 14 is inserted into the inside of the circular hole, causing the docking tube 10 to move toward one end of the connecting seat 16. When the limit rod 14 is fully reset, it can drive the plug hole on the top of the docking tube 10 to be vertically aligned with the positioning plug plate 23. At this time, the positioning The plug plate 23 will be inserted into the inside of the docking tube 10, so that the limit rod 14 can be limited and positioned to prevent the limit rod 14 from moving outward when the tungsten steel drill bit 26 rotates at high speed, thereby increasing the limiting strength of the tungsten steel drill bit 26. At the same time, the connecting tube 5 is connected to the external air valve, and then the air valve is started, so that the gas can be injected into the inside of the jet cavity 2 from the inside of the connecting tube 5, so that the jet cavity 2 can blow the surface of the tungsten steel drill bit 26, thereby blowing the debris generated by the drilling of the tungsten steel drill bit 26 to prevent the debris from accumulating near the tungsten steel drill bit 26. At the same time, the positioning top frame 4 is rotatably sleeved on the outer ring of the connecting seat 16, so that the connecting seat 16 can be prevented from driving the positioning top frame 4 to rotate at the same time when it rotates. When the limit rod 14 is reset inward, it can drive the first A guide plate 9 moves inward at the same time. At this time, the elasticity of the second return spring 19 will drive the limit slide plate 20 to move toward one end of the connecting seat 16, so that the limit slide plate 20 can be moved and reset. When the tungsten steel drill bit 26 needs to be taken out and replaced, the synchronous ring 22 can be pulled upward to cause the positioning plug plate 23 to be taken out from the inside of the docking tube 10. At the same time, when the synchronous ring 22 moves, it can also drive the connecting rope 25 to pull the connecting plate 13 and the limit rod 14 to move outward, so that the limit rod 14 is taken out from the circular hole inside the docking key 38, so that the tungsten steel drill bit 26 can be taken out and replaced. When the synchronous ring 22 is pulled upward, the guide cross plate 24 can be driven to pass through the limit slide plate 20. The opposite ends of the limit slide plate 20 and the guide cross plate 24 are both set at a 45° slope.This can improve the smoothness of the guide cross plate 24 passing through the limiting slide plate 20. When the guide cross plate 24 passes through the limiting slide plate 20, the elasticity of the second reset spring 19 will drive the limiting slide plate 20 to reset again, thereby preventing the positioning plug plate 23 from falling down again and completing the work.

[0038] Example 2

[0039] On the basis of Example 1, Figure 7 As shown, the positioning top frame 4 also includes a positioning device 27 and an extending device 28 , and the extending device 28 is slidably inserted into the bottom end of the positioning device 27 .

[0040] like Figure 8 and Fig. 9 The positioning device 27 includes a guide push plate 29, an extension side frame 30, a connecting rod 31, a contact piece 32, a guide cylinder 33 and a positioning bolt 34. The guide cylinder 33 is fixedly mounted on the bottom of both ends of the positioning top frame 4, and the positioning bolt 34 is threadedly inserted into the outer bottom end of the positioning top frame 4. The contact piece 32 is fixedly mounted on the inner center of the positioning bolt 34. The extension side frame 30 is fixedly mounted on the outer ring of the guide cylinder 33. The opposite end of the connecting rod 31 is rotatably sleeved on the outer ring of the positioning bolt 34 close to the contact piece 32. The guide push plate 29 is fixedly mounted on one end of the connecting rod 31 close to the extension side frame 30.

[0041] like Fig.10 The extension device 28 includes an extension bracket 35, a connecting arm 36 and a connecting base plate 37. The extension bracket 35 is fixedly installed at the top center of the connecting arm 36, and the connecting arm 36 is fixedly installed on both sides of the connecting base plate 37.

[0042] Guide holes compatible with the connecting rod 31 are opened on the outer ends of the guide cylinder 33 near the positioning bolt 34, and the outer surface of the extension bracket 35 facing away from the connecting base plate 37 is marked with scale lines. A limit strip is fixedly connected to the outer ring of the extension bracket 35 near the connecting base plate 37, and a slot compatible with the limit strip is opened on the inner ring of the guide cylinder 33.

[0043] When implementing this embodiment, the extension bracket 35 can be slid up and down inside the guide cylinder 33, so as to adjust the distance between the jet cavity 2 and the workpiece, and improve the blowing efficiency of the jet cavity 2. At the same time, the outer surface of the extension bracket 35 is marked with scale lines, so that the user can accurately control the moving distance of the extension bracket 35. At the same time, when the extension bracket 35 moves to the specified working area, the positioning bolt 34 can be screwed and rotated until the contact piece 32 and the extension bracket 35 are fastened, so that the jet cavity 2 can be restricted to spray gas at different heights. At the same time, when When the positioning bolt 34 is screwed and moved, the connecting rod 31 and the guide push plate 29 can be driven to move at the same time, and the connecting pipe 5 slides through the interior of the extension side frame 30. When the guide push plate 29 moves toward one end of the extension side frame 30, the connecting pipe 5 can be restricted and fixed to prevent the connecting pipe 5 from being dragged downward. When the extension bracket 35 moves, a limit strip is fixedly installed on the outer ring surface of the extension bracket 35, and a slot compatible with the limit strip is opened on the inner ring of the guide cylinder 33, so that the extension bracket 35 can be guaranteed to move in a straight line, thereby improving the movement accuracy of the injection cavity 2.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency tungsten steel alloy cutting drill bit, comprising a connecting component (1), a positioning top frame (4) is rotatably mounted on the top of the outer ring of the connecting component (1), a supporting bottom frame (3) is fixedly mounted on the bottom end of the positioning top frame (4), an air injection cavity (2) is fixedly mounted on the bottom end of the supporting bottom frame (3), and a connecting pipe (5) is symmetrically fixedly mounted between the air injection cavity (2) and the positioning top frame (4), characterized in that: The connecting component (1) comprises a limiting device (6), a synchronizing device (7) and a matching device (8), wherein the matching device (8) is slidably plugged into the bottom center of the limiting device (6), and the synchronizing device (7) is slidably plugged into the outer ring of the limiting device (6). The synchronizing device (7) comprises a synchronizing ring (22), a positioning plug plate (23), a guide transverse plate (24) and a connecting rope (25), wherein the synchronizing ring (22) is fixedly mounted on the top of the positioning plug plate (23), the guide transverse plate (24) is fixedly mounted on the outer side of the positioning plug plate (23) away from the connecting rope (25), and the connecting rope (25) is symmetrically fixedly mounted on the opposite end of the positioning plug plate (23), and the matching device (8) comprises a docking key (38) and a tungsten steel drill bit (26), wherein the tungsten steel drill bit (26) is fixedly mounted at the bottom center of the docking key (38).

2. The high-efficiency cutting tungsten steel alloy drill bit according to claim 1, characterized in that: The limiting device (6) comprises a first guide plate (9), a butt joint tube (10), an extension plate (11), a first return spring (12), a connecting plate (13), a limit rod (14), a butt joint groove (15), a connecting seat (16), a guide rail (17), a side frame (18), a second return spring (19), a limit slide plate (20) and a second guide plate (21), wherein the butt joint groove (15) is arranged at the bottom center of the connecting seat (16), the limit rod (14) is symmetrically slidably inserted in the bottom of the connecting seat (16), the connecting plate (13) is fixedly mounted on the end of the limit rod (14) away from the butt joint groove (15), the first return spring (12) is fixedly mounted between the connecting plate (13) and the connecting seat (16), the butt joint tube (10) is fixedly mounted on the limit rod ( 14) is on one end away from the connecting plate (13), the extension plate (11) is fixedly mounted on the top of the butt tube (10) close to the butt groove (15), the first guide plate (9) is fixedly mounted on the top of the butt tube (10) away from the extension plate (11), the side frame (18) is fixedly mounted on the outer bottom end of the connecting seat (16) away from the butt groove (15), the guide rail (17) is symmetrically fixedly mounted on the inner two ends of the side frame (18), the second return spring (19) is fixedly mounted on the side end of the side frame (18) away from the connecting seat (16), the limiting slide plate (20) is fixedly mounted on the outer side of the second return spring (19) away from the connecting seat (16), and the second guide plate (21) is fixedly mounted on the side end bottom of the limiting slide plate (20) away from the connecting seat (16).

3. The high-efficiency cutting tungsten steel alloy drill bit according to claim 2 is characterized in that: The docking key (38) is slidably inserted into the docking groove (15), the guide cross plate (24) is slidably sleeved on the guide rail (17), the end of the connecting rope (25) away from the positioning plug plate (23) passes through the connecting seat (16) and is fixedly connected to the top of the end of the connecting plate (13) away from the docking groove (15), and the positioning top frame (4) is rotatably sleeved on the top of the outer ring of the connecting seat (16).

4. The high-efficiency cutting tungsten steel alloy drill bit according to claim 3 is characterized in that: A placement groove is provided at the inner bottom end of the connecting seat (16), and the outer ring of the connecting plate (13) is fitted with the inner wall of the placement groove. A through hole compatible with the connecting rope (25) is provided on the top end of the placement groove away from the docking groove (15). A plug hole compatible with the positioning plug plate (23) is provided at the top center of the docking tube (10). A 45° slope is provided on the bottom end of the limit rod (14) and the top surface of the docking key (38). A round hole is provided on the top end of the outer ring of the docking key (38). The bottom end of the guide cross plate (24) away from the connecting rope (25) and the top surface of the limit slide plate (20) close to the guide track (17) are both arranged with a 45° slope, and the limit slide plate (20) is vertically aligned with the guide cross plate (24).

5. The high-efficiency cutting tungsten steel alloy drill according to claim 4, characterized in that: The positioning top frame (4) also includes a positioning device (27) and an extension device (28), and the extension device (28) is slidably inserted into the bottom end of the positioning device (27).

6. The high-efficiency cutting tungsten steel alloy drill bit according to claim 5, characterized in that: The positioning device (27) comprises a guide push plate (29), an extension side frame (30), a connecting rod (31), a contact piece (32), a guide cylinder (33) and a positioning bolt (34); the guide cylinder (33) is fixedly mounted on the bottom of both ends of the positioning top frame (4); the positioning bolt (34) is threadedly inserted into the outer bottom end of the positioning top frame (4); the contact piece (32) is fixedly mounted on the inner center of the positioning bolt (34); the extension side frame (30) is fixedly mounted on the outer ring of the guide cylinder (33); the opposite end of the connecting rod (31) is rotatably sleeved on the outer ring of the positioning bolt (34) close to the contact piece (32); and the guide push plate (29) is fixedly mounted on one end of the connecting rod (31) close to the extension side frame (30).

7. The high-efficiency cutting tungsten steel alloy drill bit according to claim 6, characterized in that: The extending device (28) comprises an extending bracket (35), a connecting arm (36) and a connecting base plate (37); the extending bracket (35) is fixedly mounted at the top center of the connecting arm (36); and the connecting arm (36) is fixedly mounted on both sides of the connecting base plate (37).

8. The high-efficiency cutting tungsten steel alloy drill according to claim 7, characterized in that: The guide cylinder (33) is provided with guide holes matched with the connecting rod (31) at both ends of the outer side close to the positioning bolt (34); the outer surface of the extension bracket (35) away from the connecting base plate (37) is marked with scale lines; a limit strip is fixedly connected to the outer ring of the extension bracket (35) close to the connecting base plate (37); and a slot matched with the limit strip is provided on the inner ring of the guide cylinder (33).

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