Diamond drilling device

Abstract

The utility model discloses a diamond drilling device which comprises a machine box, a machine frame connected to the machine box, a lifting base connected to the machine frame through a lifting mechanism, a pull rod connected to the bottom face of the lifting base, a bearing plate connected to the lower end of the pull rod, a through hole formed in the center of the bearing plate, and a first sleeve connected to the bottom face of the bearing plate. The periphery of the first sleeve is rotatably connected with a second sleeve, the lower end of the second sleeve is connected with a pre-drill bit, and the bottom surface of the bearing plate is provided with a first driving mechanism for driving the second sleeve to rotate; the center of the bottom face of the lifting base is connected with a first air cylinder, the telescopic end of the first air cylinder is connected with a telescopic rod through a rotary connector, the top face of the bearing plate is rotationally connected with a third sleeve, and the telescopic rod is in spline connection in the third sleeve. And a second driving mechanism for driving the third sleeve to rotate is arranged on the top surface of the bearing plate. Through pre-drilling, rapid drilling, rough machining and stress release are achieved, and the problem of edge breakage of superhard material drilling is solved.

Description

Technical Field

[0001] This utility model relates to the field of drilling device technology, specifically a diamond drilling device. Background Technology

[0002] When drilling into ultrahard materials, traditional cemented carbide or PCD (polycrystalline diamond) drill bits are prone to wear and have low drilling efficiency. Moreover, a single drill bit cannot achieve both drilling efficiency and machining accuracy, which can easily lead to material chipping or thermal damage. Utility Model Content

[0003] In view of the shortcomings of the prior art, the present invention provides a diamond drilling device to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A diamond drilling device includes a chassis with a processing table and a positioning mechanism. A frame is connected to the chassis, and a lifting mechanism is mounted on the frame. A lifting seat is connected to the lifting mechanism. Multiple pull rods are connected to the bottom of the lifting seat, and a support plate is connected to the lower end of the pull rods. The support plate has a through hole in its center. A first sleeve communicating with the through hole is fixedly connected to the bottom of the support plate. A second sleeve is rotatably connected to the periphery of the first sleeve. A pre-drill bit is fixedly connected to the lower end of the second sleeve. A first drive mechanism for driving the second sleeve to rotate is provided on the bottom of the support plate. A first cylinder is connected to the center of the bottom of the lifting seat. A telescopic rod is connected to the telescopic end of the first cylinder through a rotary joint. A third sleeve communicating with the through hole is rotatably connected to the top of the support plate. The telescopic rod is splinedly connected inside the third sleeve and can slide up and down inside the third sleeve. A precision drill bit is detachably connected to the lower end of the telescopic rod. The precision drill bit is hidden inside the first sleeve. A second drive mechanism for driving the third sleeve to rotate is provided on the top of the support plate.

[0006] Preferably, the positioning mechanism includes side plates installed on both sides of the processing table, second cylinders installed on both sides of the processing table, and clamping plates connected to the telescopic ends of the two second cylinders, with the two clamping plates located between the two side plates.

[0007] The above technical solution involves placing the object to be drilled on the processing table, and then controlling the two second cylinders to extend simultaneously, which can drive the two clamping plates to move relative to each other to clamp the object.

[0008] Preferably, the lifting mechanism includes a hydraulic cylinder installed on the top of the frame and a guide rod slidably connected to the top of the frame, wherein the telescopic end of the hydraulic cylinder and the lower end of the guide rod are both connected to the lifting seat.

[0009] The above technical solution controls the operation of the hydraulic cylinder, which can drive the lifting seat to rise and fall, and the guide rod can improve the stability of the lifting seat's rise and fall.

[0010] Preferably, the first drive mechanism consists of a first motor mounted on the bottom surface of the support plate, a first transmission shaft connected to the first motor via a coupling, a first gear connected to the first transmission shaft, and a second gear connected to the second sleeve, with the first gear meshing with the second gear.

[0011] The above technical solution involves starting the first motor, which drives the first transmission shaft to rotate. Through the cooperation of the first gear and the second gear, the second sleeve can be driven to rotate.

[0012] Preferably, the second drive mechanism includes a second motor mounted on the top surface of the support plate, a second transmission shaft connected to the second motor via a coupling, a third gear connected to the second transmission shaft, and a fourth gear connected to the third sleeve, wherein the third gear meshes with the fourth gear.

[0013] The above technical solution involves starting the second motor, which drives the second transmission shaft to rotate. Through the cooperation of the third and fourth gears, the third sleeve can be driven to rotate.

[0014] Preferably, the surface of the pre-drill bit is provided with spiral protrusions, and diamond abrasive grains are electroplated on the protrusions.

[0015] The above technical solution uses electroplated diamond abrasive grains on the surface, distributed along the spiral line of the conical surface, to avoid stress concentration during cutting.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] During drilling, the second sleeve is driven to rotate by the first drive mechanism, and the second sleeve drives the pre-drill bit to rotate, thereby achieving pre-drilling, which enables rapid hole opening, roughing and stress release, reduces the load of subsequent finishing, and solves the problem of edge chipping when drilling superhard materials.

[0018] After the pre-drilling is completed, the first cylinder is extended, which drives the telescopic rod to descend, allowing the precision drill bit to be moved out of the first sleeve. Then, the third sleeve is driven to rotate by the second drive mechanism. The third sleeve drives the telescopic rod to rotate, which in turn drives the precision drill bit to rotate, so as to further drill the hole, reduce the wear on the precision drill bit, and improve drilling efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the present invention;

[0020] Figure 2 This is a partial cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic diagram of the second casing and the pre-drilled bit;

[0022] In the diagram: 1-Chassis, 2-Machining table, 3-Lifting seat, 4-Tie rod, 5-Bearing plate, 6-First sleeve, 7-Second sleeve, 8-Pre-drill bit, 9-First cylinder, 10-Rotary joint, 11-Telescopic rod, 12-Third sleeve, 13-Precision drill bit, 14-Side plate, 15-Second cylinder, 16-Clamping plate, 17-Hydraulic cylinder, 18-Guide rod, 19-First motor, 20-First gear, 21-Second gear, 22-Second motor, 23-Third gear, 24-Fourth gear, 25-Protrusion, 26-Diamond abrasive grain. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figures 1-3 A diamond drilling device includes a housing 1, a processing table 2 mounted on the housing 1, and a positioning mechanism on the processing table 2 to fix an object onto the processing table. The positioning mechanism includes side plates 14 mounted on both sides of the processing table, second cylinders 15 mounted on both sides of the processing table, and clamping plates 16 connected to the extension / retraction ends of the two second cylinders, with the two clamping plates 16 located between the side plates 14. When the object to be drilled is placed on the processing table 2, and then the two second cylinders 15 are simultaneously extended, the two clamping plates 16 move relative to each other to clamp the object.

[0026] A frame is connected to the chassis 1, and a lifting mechanism is installed on the frame. A lifting seat 3 is connected to the lifting mechanism, which controls the raising and lowering of the lifting seat. The lifting mechanism includes a hydraulic cylinder 17 mounted on the top of the frame and a guide rod 18 slidably connected to the top of the frame. The telescopic end of the hydraulic cylinder 17 and the lower end of the guide rod 18 are both connected to the lifting seat 3. Controlling the hydraulic cylinder 17 to operate drives the lifting seat 3 to rise and fall, and the guide rod 18 improves the stability of the lifting seat 3 during raising and lowering.

[0027] The bottom surface of the lifting seat 3 is connected to multiple tie rods 4. The lower end of the tie rods 4 is connected to a bearing plate 5. The bearing plate 5 has a through hole in its center. A first sleeve 6 communicating with the through hole is fixedly connected to the bottom surface of the bearing plate 5. A second sleeve 7 is rotatably connected to the periphery of the first sleeve 6 through a rotary bearing. A pre-drill bit 8 is fixedly connected to the lower end of the second sleeve 7. The bottom surface of the bearing plate 5 is provided with a first drive mechanism to drive the second sleeve 7 to rotate. The first drive mechanism consists of a first motor 19 mounted on the bottom surface of the bearing plate, a first transmission shaft connected to the first motor through a coupling, a first gear 20 connected to the first transmission shaft, and a second gear 21 connected to the second sleeve. The first gear 20 and the second gear 21 mesh. When the first motor 19 is started, it drives the first transmission shaft to rotate. Through the cooperation of the first gear 20 and the second gear 21, the second sleeve 7 can be driven to rotate. The second sleeve 7 drives the pre-drill bit 8 to rotate to perform pre-drilling.

[0028] A first cylinder 9 is connected to the center of the bottom surface of the lifting seat 3. The telescopic end of the first cylinder 9 is connected to a telescopic rod 11 via a rotary joint 10. A third sleeve 12 communicating with a through hole is rotatably connected to the top surface of the support plate 5 via a rotary bearing. The telescopic rod 11 is splinedly connected to the third sleeve 12 and can slide up and down within the third sleeve 12. A precision drill bit 13 is detachably connected to the lower end of the telescopic rod 11. The precision drill bit 13 is hidden inside the first sleeve 6. A second drive mechanism for driving the third sleeve 12 to rotate is provided on the top surface of the support plate 5. The upper end of the precision drill bit can be connected to the telescopic rod via a Morse taper or fixed to the telescopic rod via a self-tightening chuck. The installation of the drill bit is existing technology and will not be described in detail in this embodiment. The second drive mechanism includes a second motor 22 mounted on the top surface of the support plate, a second transmission shaft connected to the second motor via a coupling, a third gear 23 connected to the second transmission shaft, and a fourth gear 24 connected to the third sleeve. The third gear 23 and the fourth gear 24 mesh. Start the second motor 22, which drives the second transmission shaft to rotate. Through the cooperation of the third gear 23 and the fourth gear 24, the third sleeve 12 can be driven to rotate. The third sleeve 12 drives the telescopic rod 11 to rotate, thereby driving the precision drill bit 13 to rotate.

[0029] The working principle of this embodiment is as follows:

[0030] The object to be drilled is placed on the processing table 2. Then, the two second cylinders 15 are extended simultaneously, causing the two clamping plates 16 to move relative to each other and clamp the object. Next, the hydraulic cylinder 17 is extended, causing the lifting seat 3 to descend, bringing the pre-drill bit 8 into contact with the object. Then, the first motor 19 is started, driving the second sleeve 7 to rotate. The second sleeve 7 drives the pre-drill bit 8 to rotate, initiating pre-drilling. After pre-drilling is completed, the first cylinder 9 is extended, causing the telescopic rod 11 to descend, allowing the precision drill bit 13 to move out of the first sleeve 6. Then, the second motor 22 is started, driving the third sleeve 12 to rotate. The third sleeve 12 drives the telescopic rod 11 to rotate, thereby driving the precision drill bit 13 to rotate for further drilling, reducing wear on the precision drill bit and improving drilling efficiency.

[0031] Example 2

[0032] Based on Embodiment 1, the surface of the pre-drill bit 8 is provided with spiral protrusions 25, and diamond abrasive grains 26 are electroplated on the protrusions 25. The surface of the pre-drill bit 8 is made of electroplated diamond abrasive grains, which are distributed along the spiral line of the conical surface, which can avoid stress concentration during cutting.

[0033] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diamond drilling device, characterized in that: Includes a chassis (1), a processing table (2) on the chassis (1), a positioning mechanism on the processing table (2), a frame connected to the chassis (1), a lifting mechanism installed on the frame, and a lifting seat (3) connected to the lifting mechanism. Multiple pull rods (4) are connected to the bottom surface of the lifting seat (3), and a bearing plate (5) is connected to the lower end of the pull rods (4). The bearing plate (5) has a through hole in the center, and a first sleeve (6) communicating with the through hole is fixedly connected to the bottom surface of the bearing plate (5). A second sleeve (7) is rotatably connected to the periphery of the first sleeve (6), and a pre-drill bit (8) is fixedly connected to the lower end of the second sleeve (7). A first driving mechanism for driving the second sleeve (7) to rotate is provided on the bottom surface of the bearing plate (5). The center of the bottom surface of the lifting seat (3) is connected to a first cylinder (9). The telescopic end of the first cylinder (9) is connected to a telescopic rod (11) through a rotary joint (10). The top surface of the bearing plate (5) is rotatably connected to a third sleeve (12) that communicates with the through hole. The telescopic rod (11) is splined inside the third sleeve (12) and the telescopic rod (11) can slide up and down inside the third sleeve (12). The lower end of the telescopic rod (11) is detachably connected to a precision drill bit (13). The precision drill bit (13) is hidden inside the first sleeve (6). The top surface of the bearing plate (5) is provided with a second driving mechanism to drive the third sleeve (12) to rotate.

2. The diamond drilling device according to claim 1, characterized in that: The positioning mechanism includes side plates (14) installed on both sides of the processing table, second cylinders (15) installed on both sides of the processing table, and clamping plates (16) connected to the extension and retraction ends of the two second cylinders. The two clamping plates (16) are located between the two side plates (14).

3. The diamond drilling device according to claim 2, characterized in that: The lifting mechanism includes a hydraulic cylinder (17) installed on the top of the frame and a guide rod (18) slidably connected to the top of the frame. The telescopic end of the hydraulic cylinder (17) and the lower end of the guide rod (18) are both connected to the lifting seat (3).

4. The diamond drilling device according to claim 3, characterized in that: The first drive mechanism is mounted on the bottom surface of the support plate with a first motor (19), a first transmission shaft connected to the first motor via a coupling, a first gear (20) connected to the first transmission shaft, and a second gear (21) connected to the second sleeve. The first gear (20) meshes with the second gear (21).

5. A diamond drilling device according to claim 4, characterized in that: The second drive mechanism includes a second motor (22) mounted on the top surface of the support plate, a second transmission shaft connected to the second motor via a coupling, a third gear (23) connected to the second transmission shaft, and a fourth gear (24) connected to the third sleeve, wherein the third gear (23) meshes with the fourth gear (24).

6. A diamond drilling apparatus according to any one of claims 1-5, characterized in that: The surface of the pre-drill bit (8) is provided with spiral protrusions (25), and diamond abrasive grains (26) are electroplated on the protrusions (25).

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