A precision positioning drill bit assembly

Abstract

The utility model discloses a kind of drilling machine drill bit assemblies of accurate positioning, it is related to drilling machine technical field, it includes the drilling machine rack of back outer wall fixed installation controller, the drilling machine rack is connected with the interface box by electric lifting mechanism, the lateral wall of interface box is fixedly connected with cover, and the side of cover is equipped with drilling machine drill bit structure, the drilling machine drilling structure includes switching shaft, switching disc, first stepper motor, worm, worm wheel and four electric drill bits.The electric lifting mechanism of the utility model is set, when electric drill bit is drilled downwards, the drilling depth of electric drill bit can be accurately positioned by infrared distance sensor, so as to improve the drilling effect of electric drill bit;Different models of drilling machine drill bit can be switched online to adapt to the use requirement of different situations, so that the cumbersome disassembly replacement procedure is saved, and it is beneficial to improve the replacement use efficiency of drill bit.

Description

Technical Field

[0001] This utility model relates to the field of drilling machine technology, and in particular to a drill bit assembly for a drilling machine with precise positioning. Background Technology

[0002] Drilling machines are a general term for machines and equipment that use tools that are harder and sharper than the target object to leave cylindrical holes or openings in the target object through rotary cutting or rotary extrusion. They are also called drilling machines, hole punching machines, eye punching machines, through hole machines, etc.

[0003] The existing drill bit assembly of the drilling machine has a simple structure and cannot accurately position the drilling depth, resulting in poor drilling effect. When it is necessary to drill holes of different diameters on the object, it is necessary to frequently change different models of drill bits. However, the existing drill bit assembly does not have the function of online switching, which eliminates the need for cumbersome disassembly steps to complete the replacement, thus reducing the efficiency of drill bit replacement. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precision-positioning drill bit assembly for drilling machines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precision-positioning drill bit assembly for a drilling machine includes a drilling machine frame with a controller fixedly mounted on its rear outer wall. The drilling machine frame is connected to a connecting box via an electric lifting mechanism. A cover is fixedly connected to the side wall of the connecting box, and a drill bit structure for the drilling machine is provided on one side of the cover.

[0007] The drilling structure of the drilling machine includes a switching shaft rotatably installed at the center of the cover, a switching disk coaxially welded to the outer wall of one end of the switching shaft, a first stepper motor fixedly installed on the outer wall of one side of the cover, a worm gear fixedly mounted on the output shaft of the first stepper motor, a worm wheel fixedly mounted on the other end of the switching shaft, and four electric drill bits located in front of the switching disk.

[0008] The electric lifting mechanism includes an infrared ranging sensor, a guide assembly, a second stepper motor fixedly installed on the top outer wall of the drilling machine frame, a vertical lead screw rotatably installed in the drilling machine frame, a lifting seat fixedly connected to the connecting box, and a lead screw pair fixedly embedded in the lifting seat and threadedly connected to the vertical lead screw.

[0009] As a further description of the above technical solution, the worm and worm wheel mesh with each other and are both located inside the cover, and the four electric drill bits are distributed in a ring around the center of the switching disc.

[0010] As a further description of the above technical solution, the electric drill bit includes a mounting base welded to the outer wall of the front side of the switching disc, a motor fixedly mounted on the mounting base, and a drill bit body coaxially and fixedly connected to the motor output shaft via a coupling, wherein the motor output shaft passes through the mounting base.

[0011] As a further description of the above technical solution, the output shaft of the second stepper motor passes through the top of the drilling machine frame and is coaxially and fixedly connected to the top of the vertical lead screw via a coupling.

[0012] As a further description of the above technical solution, the infrared ranging sensor includes an infrared sensor transmitter fixedly installed on the inner wall of the top of the drilling machine frame and an infrared sensor receiver fixedly installed on the outer wall of the top of the lifting seat.

[0013] As a further description of the above technical solution, the guide assembly includes two columns symmetrically welded into the drilling machine frame and two linear bearings fixedly embedded in the lifting seat, with the two linear bearings being movably connected to the two columns respectively.

[0014] As a further description of the above technical solution, a first power supply is fixedly installed inside the connecting box, and a second power supply is fixedly installed on the side wall of the switching disk.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The electric lifting mechanism provided in this utility model can accurately locate the drilling depth of the electric drill bit through an infrared ranging sensor when the electric drill bit moves downward to drill, thereby improving the drilling effect of the electric drill bit.

[0017] 2. This utility model controls the rotation of the worm gear by a stepper motor, and then the worm wheel meshing with the worm gear drives the switching disk fixed at one end of the switching shaft to rotate, thereby switching the required model of electric drill bit to be used downwards. In this way, online switching of different models of drilling machine drill bits can be realized to adapt to different usage needs, thus eliminating the cumbersome disassembly and replacement process and improving the efficiency of drill bit replacement and use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the entire front view of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the overall rear view of this utility model;

[0020] Figure 3 This is a rear view schematic diagram of the drilling structure of the drilling machine in this utility model;

[0021] Figure 4This is a three-dimensional enlarged structural diagram of the drilling structure of the drilling machine in this utility model;

[0022] Figure 5 This is a three-dimensional enlarged structural diagram of the electric lifting mechanism in this utility model.

[0023] In the diagram: 1. Drilling machine frame; 2. Connecting box; 3. Cover; 4. Switching shaft; 5. Switching disc; 6. First stepper motor; 7. Worm gear; 8. Worm wheel; 9. Electric drill bit; 901. Mounting base; 902. Motor; 903. Drill bit body; 10. Second stepper motor; 11. Vertical lead screw; 12. Lead screw pair; 13. Lifting seat; 14. Infrared ranging sensor; 1401. Infrared sensor transmitter; 1402. Infrared sensor receiver; 15. Column; 16. Linear bearing; 17. Controller; 18. First power supply; 19. Second power supply. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-5 A precision-positioning drill bit assembly for a drilling machine includes a drilling machine frame 1 with a controller 17 fixedly mounted on the outer wall of the back. The drilling machine frame 1 is connected to a connecting box 2 via an electric lifting mechanism. A cover 3 is fixedly connected to the side wall of the connecting box 2. A drill bit structure for the drilling machine is provided on one side of the cover 3.

[0026] Specifically, the drilling structure of the drilling machine includes a switching shaft 4 rotatably mounted at the center of the cover 3, a switching disk 5 coaxially welded to the outer wall of one end of the switching shaft 4, a first stepper motor 6 fixedly mounted on one side of the outer wall of the cover 3, a worm 7 fixedly mounted on the output shaft of the first stepper motor 6, a worm wheel 8 fixedly mounted on the other end of the switching shaft 4, and four electric drill bits 9 located in front of the switching disk 5; furthermore, the worm 7 and the worm wheel 8 mesh with each other and are both located inside the cover 3, and the four electric drill bits 9 are arranged in a ring around the center of the switching disk 5. Each electric drill bit 9 includes a mounting base 901 welded to the outer wall of the front of the switching disk 5, a motor 902 fixedly mounted on the mounting base 901, and a drill bit body 903 coaxially fixedly connected to the output shaft of the motor 902 through a coupling. The output shaft of the motor 902 passes through the mounting base 901, and the four drill bit bodies 903 are of different models.

[0027] Specifically, the electric lifting mechanism includes an infrared ranging sensor 14, a guide assembly, a second stepper motor 10 fixedly installed on the top outer wall of the drilling machine frame 1, a vertical lead screw 11 rotatably installed inside the drilling machine frame 1, a lifting seat 13 fixedly connected to the connecting box 2, and a lead screw pair 12 fixedly embedded in the lifting seat 13 and threadedly connected to the vertical lead screw 11; furthermore, the output shaft of the second stepper motor 10 passes through the top of the drilling machine frame 1 and is coaxially fixedly connected to the top end of the vertical lead screw 11 through a coupling;

[0028] Furthermore, the infrared ranging sensor 14 includes an infrared sensor transmitter 1401 fixedly installed on the inner wall of the top of the drilling machine frame 1 and an infrared sensor receiver 1402 fixedly installed on the outer wall of the top of the lifting seat 13.

[0029] Furthermore, the guide assembly includes two columns 15 symmetrically welded into the drilling machine frame 1 and two linear bearings 16 fixedly embedded in the lifting seat 13. The two linear bearings 16 are movably connected to the two columns 15 respectively. Through the guiding effect of the guide assembly, the stability of the lifting action of the lifting seat 13 can be guaranteed.

[0030] In addition, a first power supply 18 is fixedly installed inside the connecting box 2, which can supply power to the first stepper motor 6 in the lifting operation state. A second power supply 19 is fixedly installed on the side wall of the switching disk 5, which can supply power to the four motors 902. The infrared ranging sensor 14, the first stepper motor 6 and the second stepper motor 10 are all electrically connected to the controller 17.

[0031] The working principle of this embodiment is as follows: First, the first stepper motor 6 controls the worm gear 7 to rotate. Then, the worm wheel 8, meshing with the worm gear 7, drives the switching disk 5, fixed at one end of the switching shaft 4, to rotate. This allows the required type of electric drill bit 9 to be switched to a downward orientation for use. This enables online switching of different types of drill bits to adapt to different usage needs, eliminating the cumbersome disassembly and replacement process and improving the efficiency of drill bit replacement. Second, the motor 902 controls the drill body 903 to rotate to begin drilling operations. At this time, through... The second stepper motor 10 controls the vertical lead screw 11 to rotate. Subsequently, the lead screw pair 12, which is threadedly connected to the vertical lead screw 11, drives the lifting seat 13 to move downward. The infrared sensor transmitter 1401 on the drilling machine frame 1 and the infrared sensor receiver 1402 on the lifting seat 13 can detect the distance of the drill bit body 903 descending in real time. When the distance reaches the set value, the controller 17 controls the second stepper motor 10 to stop running. In this way, the drilling depth of the drilling machine drill bit can be accurately positioned, improving the drilling effect of the drill bit assembly.

[0032] The contents not described in detail in this specification are prior art known to those skilled in the art. 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 the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision-positioning drill bit assembly for a drilling machine, comprising a drilling machine frame (1) with a controller (17) fixedly mounted on its rear outer wall, characterized in that, The drilling machine frame (1) is connected to a connecting box (2) via an electric lifting mechanism. A cover (3) is fixedly connected to the side wall of the connecting box (2), and a drilling machine drill bit structure is provided on one side of the cover (3). The drilling structure of the drilling machine includes a switching shaft (4) rotatably installed at the center of the cover (3), a switching disk (5) coaxially welded to the outer wall of one end of the switching shaft (4), a first stepper motor (6) fixedly installed on one side of the outer wall of the cover (3), a worm gear (7) fixedly mounted on the output shaft of the first stepper motor (6), a worm wheel (8) fixedly mounted on the other end of the switching shaft (4), and four electric drill bits (9) located in front of the switching disk (5). The electric lifting mechanism includes an infrared ranging sensor (14), a guide assembly, a second stepper motor (10) fixedly installed on the top outer wall of the drilling machine frame (1), a vertical lead screw (11) rotatably installed in the drilling machine frame (1), a lifting seat (13) fixedly connected to the connecting box (2), and a lead screw pair (12) fixedly embedded in the lifting seat (13) and threadedly connected to the vertical lead screw (11).

2. The precision-positioning drill bit assembly for a drilling machine according to claim 1, characterized in that, The worm (7) and worm wheel (8) mesh with each other and are both located inside the cover (3), and the four electric drill bits (9) are arranged in a ring around the center of the switching disk (5).

3. The precision-positioning drill bit assembly for a drilling machine according to claim 1, characterized in that, The electric drill bit (9) includes a mounting base (901) welded to the front outer wall of the switching plate (5), a motor (902) fixedly mounted on the mounting base (901), and a drill bit body (903) coaxially fixedly connected to the output shaft of the motor (902) via a coupling, and the output shaft of the motor (902) passes through the mounting base (901).

4. The precision-positioning drill bit assembly for a drilling machine according to claim 1, characterized in that, The output shaft of the second stepper motor (10) passes through the top of the drilling machine frame (1) and is coaxially fixedly connected to the top of the vertical lead screw (11) via a coupling.

5. A precision-positioning drill bit assembly for a drilling machine according to claim 1, characterized in that, The infrared ranging sensor (14) includes an infrared sensor transmitter (1401) fixedly installed on the inner wall of the top of the drilling machine frame (1) and an infrared sensor receiver (1402) fixedly installed on the outer wall of the top of the lifting seat (13).

6. The precision-positioning drill bit assembly for a drilling machine according to claim 1, characterized in that, The guide assembly includes two columns (15) symmetrically welded into the drilling machine frame (1) and two linear bearings (16) fixedly embedded in the lifting seat (13), and the two linear bearings (16) are movably connected to the two columns (15) respectively.

7. A precision-positioning drill bit assembly for a drilling machine according to claim 1, characterized in that, The first power supply (18) is fixedly installed inside the connecting box (2), and the second power supply (19) is fixedly installed on the side wall of the switching disk (5).

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