A high strength open hole drill bit

Abstract

This utility model relates to the field of drill bit drilling technology, and in particular to a high-strength drilling drill bit, including a drilling machine. The bottom end of the drilling machine is fixedly connected to a handle for support, and the output end of the drilling machine is fixedly connected to a rotating shaft. A base is installed at the end of the rotating shaft, and a drill bit is installed in the middle of one side of the base. A transparent cover for dust prevention is provided on the outside of the drill bit. Through the leading edge located at the foremost tip of the three-stage progressive cutting edge, hard workpieces can be penetrated and drilled. The helical edge located in the middle of the three-stage progressive cutting edge further grinds the matrix material penetrated and drilled by the leading edge. The grinding debris can be discharged along the interlaced thread groove as the drill bit rotates. Finally, the outer edge polishing edge located at the rear end of the three-stage progressive cutting edge trims and smooths the burrs on the inner wall of the formed hole.

Description

Technical Field

[0001] This utility model relates to the field of drill bit drilling technology, and in particular to a high-strength drilling bit. Background Technology

[0002] Precision instrument processing involves processing precision workpieces according to implementation requirements, such as welding, cutting, and drilling. Drilling refers to the operation of creating holes in solid materials using a drill bit. This process usually requires the use of appropriate drilling equipment to meet the drilling requirements.

[0003] In the existing technology, different workpieces are made of different materials, including hard steel materials and soft plastic materials. When it is necessary to drill holes in the workpiece, if different matrix workpiece materials are encountered, the staff needs to change different drill bits back and forth, which makes the operation more troublesome and directly affects the drilling efficiency. Utility Model Content

[0004] To address the technical problem that existing drilling machines require operators to repeatedly change different drill bits to cope with different workpiece matrix materials, which directly affects drilling efficiency, this utility model provides a high-strength drilling bit.

[0005] This utility model is achieved by the following technical solution: it includes a drilling machine, a handle for support is fixedly connected to the bottom end of the drilling machine, a rotating shaft is fixedly connected to the output end of the drilling machine, a base is installed at the end of the rotating shaft, a drill bit suitable for different matrix materials is installed in the middle of one side of the base, and a transparent cover for dust prevention is provided on the outside of the drill bit.

[0006] Through the above technical solution, the drilling machine drives the rotating shaft to rotate, so that the drill bit suitable for different matrix materials rotates synchronously with the rotating shaft, realizing drilling of different workpieces; the transparent cover can prevent the debris generated during drilling from affecting the workers.

[0007] As a further improvement to the above solution, the drill bit is provided with three progressive cutting edges, namely a leading edge, an intermediate helical edge, and an outer polishing edge, and the leading edge, intermediate helical edge, and outer polishing edge are sequentially fixed together.

[0008] As a further improvement to the above scheme, the leading edge is configured as a carbide conical tooth for crushing high-hardness impurities.

[0009] Through the above technical solution, the leading edge is located at the foremost tip of the three-stage progressive cutting edge and is made of carbide conical teeth, which can penetrate and drill hard workpieces.

[0010] As a further improvement to the above scheme, the outer side of the spiral blade is provided with staggered spiral grooves for the main cutting layer, and the spiral angle of the staggered spiral grooves is between 30 degrees and 50 degrees.

[0011] Through the above technical solution, the spiral blade is located in the middle of the three-stage progressive cutting edge. It mainly performs a finer grinding of the matrix material that the leading edge penetrates and drills. It also has staggered thread grooves on its surface, and the spiral angle is between 30 and 50 degrees, which can optimize the discharge of the debris generated by grinding.

[0012] As a further improvement to the above solution, the surface of the outer edge polishing blade is configured with a diamond coating for polishing the hole wall.

[0013] Through the above technical solution, the outer edge polishing blade is located at the rear end of the third-level progressive cutting blade, and its surface is provided with a diamond coating, which is used to trim and smooth the burrs on the inner wall of the already formed hole.

[0014] As a further improvement to the above solution, the rotating shaft and the drill bit are fixedly connected, and a sliding sleeve is slidably provided on the outside of the fixed connection point between the rotating shaft and the drill bit. The base is fixedly connected to the outside of the sliding sleeve, and the transparent cover is fixedly connected to the outside of the sliding sleeve.

[0015] Through the above technical solution, the setting of the outer base of the sliding sleeve allows the transparent cover fixed to the outside of the base to hold the workpiece still when the drilling machine drives the drill bit to extend and drill into the workpiece.

[0016] As a further improvement to the above solution, the elastic component includes a compression spring fixed between the base and the drilling machine, and the compression spring is located on the outside of the rotating shaft.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention utilizes a leading edge located at the very front of a three-stage progressive cutting edge to penetrate and drill through hard workpieces. This allows the spiral edge located in the middle of the three-stage progressive cutting edge to further grind the substrate material penetrated and drilled by the leading edge. Furthermore, the grinding debris can be discharged along the interlaced thread grooves as the drill bit rotates. Finally, the outer edge polishing edge located at the rear end of the three-stage progressive cutting edge trims and smooths the burrs on the inner wall of the already formed hole. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional view of the internal structure of the transparent cover of this utility model;

[0021] Figure 3 This utility model Figure 3 3D structural side view.

[0022] Explanation of key symbols:

[0023] 1. Drilling machine; 2. Handle; 3. Shaft; 4. Base; 5. Drill bit; 6. Transparent cover; 7. Leading edge; 8. Middle spiral edge; 9. Outer edge polishing edge; 10. Interlaced spiral grooves; 11. Sliding sleeve; 12. Compression spring. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Please combine Figures 1-3 This embodiment of a high-strength drilling bit includes a drilling machine 1, a handle 2 for support fixedly connected to the bottom end of the drilling machine 1, a rotating shaft 3 fixedly connected to the output end of the drilling machine 1, a base 4 installed at the end of the rotating shaft 3, a power source installed in the middle of one side of the base 4, and a transparent cover 6 for dust prevention provided on the outside of the drill bit 5.

[0026] Combination Figure 2 The drill bit 5 is provided with three progressive cutting edges, namely a leading edge 7, an intermediate helical edge 8, and an outer polishing edge 9, which are sequentially fixed together. The leading edge 7 is configured as a carbide conical tooth for breaking high-hardness impurities. The outer side of the helical edge is provided with staggered helical grooves 10 for the main cutting layer, and the helical angle of the staggered helical grooves 10 is between 30 and 50 degrees. The surface of the outer polishing edge 9 is configured as... Diamond coating used for grinding the hole wall; the leading edge 7 at the front of the third progressive cutting edge can penetrate and drill through hard workpieces, so that the spiral edge 8 in the middle of the third progressive cutting edge can further grind the matrix material penetrated and drilled by the leading edge 7, and the grinding debris can be discharged along the staggered thread groove 10 as the drill bit 5 rotates. Finally, the outer edge polishing edge 9 at the rear of the third progressive cutting edge can trim and smooth the burrs on the inner wall of the formed hole.

[0027] Combination Figures 1-3The rotating shaft 3 and the drill bit 5 are fixedly connected, and a sliding sleeve 11 is slidably provided on the outside of the fixed connection point between the rotating shaft 3 and the drill bit 5. The base 4 is fixedly connected to the outside of the sliding sleeve 11, and the transparent cover 6 is fixedly connected to the outside of the sliding sleeve 11. The elastic component includes a compression spring 12 fixed between the base 4 and the drilling machine 1, and the compression spring 12 is located on the outside of the rotating shaft 3. By providing a slidable sliding sleeve 11 on the outside of the fixed connection point between the rotating shaft 3 and the drill bit 5, when the drilling machine 1 drives the drill bit 5 to extend and drill into the workpiece, the transparent cover 6 fixed on the outside of the base 4 can hold the workpiece still and finally be pulled back to the initial position by the elasticity of the compression spring 12.

[0028] The implementation principle of a high-strength hole-opening drill bit 5 in this application embodiment is as follows:

[0029] Before starting work, first align the drill bit 5 with the position where the workpiece needs to be drilled, then place the transparent cover 6 against the surface of the workpiece and keep it still. At this time, the operator starts the drilling machine 1 and drives the rotating shaft 3 to rotate. At the same time, the operator holds the handle 2 and drives the drilling machine 1 to apply pressure towards the workpiece. Since the base 4 and the drilling machine 1 are fixedly connected with the compression spring 12, when the drilling machine 1 moves horizontally towards the wall, it will drive the compression spring 12 to compress towards the workpiece, and at the same time, it will drive the rotating shaft 3 to slide inside the sliding sleeve 11.

[0030] At this time, the rotating shaft 3 can drive the drill bit 5 to drill. Since the drill bit 5 is set as a three-stage progressive cutting edge, and the leading edge 7 at the front end of the three-stage progressive cutting edge can penetrate and drill through hard workpieces, the spiral edge 8 in the middle of the three-stage progressive cutting edge can further grind the matrix material penetrated and drilled by the leading edge 7. The debris generated by grinding can be discharged along the staggered thread groove 10 as the drill bit 5 rotates. Finally, the outer edge polishing edge 9 at the rear end of the three-stage progressive cutting edge can trim and smooth the burrs on the inner wall of the formed hole.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A high-strength drilling bit, comprising a drilling machine (1), wherein a handle (2) for support is fixedly connected to the bottom end of the drilling machine (1), and a rotating shaft (3) is fixedly connected to the output end of the drilling machine (1), characterized in that, A base (4) is installed at the end of the shaft (3), and a drill bit (5) suitable for different matrix materials is installed in the middle of one side of the base (4); The drill bit (5) is provided with a transparent cover (6) for dust protection on the outside.

2. The high-strength drilling bit as described in claim 1, characterized in that, The drill bit (5) is provided with three progressive cutting edges, namely a leading edge (7), an intermediate spiral edge (8) and an outer polishing edge (9), and the leading edge (7), the intermediate spiral edge (8) and the outer polishing edge (9) are fixedly connected in sequence.

3. A high-strength open-hole type drill bit as described in claim 2, characterized in that, The leading edge (7) is configured as a carbide conical tooth for crushing high-hardness impurities.

4. A high-strength open-hole type drill bit as described in claim 2, characterized in that, The outer side of the spiral blade is provided with staggered spiral grooves (10) for the main cutting layer, and the spiral angle of the staggered spiral grooves (10) is between 30 degrees and 50 degrees.

5. A high-strength drilling bit as described in claim 2, characterized in that, The outer edge polishing blade (9) is coated with a diamond layer for polishing the hole wall.

6. A high-strength drilling bit as described in claim 1, characterized in that, The rotating shaft (3) and the drill bit (5) are fixedly connected, and a sliding sleeve (11) is slidably provided on the outside of the fixed connection point between the rotating shaft (3) and the drill bit (5). The base (4) is fixedly connected to the outside of the sliding sleeve (11), and the transparent cover (6) is fixedly connected to the outside of the sliding sleeve (11). An elastic component is provided between the base (4) and the drilling machine (1).

7. A high-strength drilling bit as described in claim 6, characterized in that, The elastic component includes a compression spring (12) fixed between the base (4) and the drilling machine (1), and the compression spring (12) is located outside the rotating shaft (3).

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