Efficient wear-resistant crown drill blade structure

Abstract

The utility model provides an efficient wear-resistant crown drill blade structure, which relates to the technical field of blade structures and comprises a blade, four groups of deep notches are arranged on each of the upper and lower side surfaces of the blade, shallow notches are arranged on the left and right sides of each group of deep notches, and a middle connecting section is fixed at the center of the lower end surface of the blade. A middle connecting section is fixed to the lower end of the blade, a lower mounting rod is fixed to the lower end of the middle connecting section, the centers of the blade, the middle connecting section and the lower mounting rod are located on the same axis, upper through holes are formed in the left portion and the right portion of the blade, the upper through holes are of cylindrical through hole structures, and middle sleeve holes are formed among the blade, the middle connecting section and the lower mounting rod; and the middle sleeve hole adopts a cylindrical sleeve hole structure. The blade face of the blade is firm and stable, the grooves with different depths are formed, rapid machining of the crown drill is facilitated, the middle connecting section on the lower portion of the blade and the lower installation rod are of an integrated structure, installation is more stable and firmer, disengagement is not prone to occurring, and therefore it is guaranteed that machining of the crown drill is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of blade structures, in particular to a high-efficiency and wear-resistant crown drill blade structure. Background Art

[0002] In the field of mechanical processing, efficient crown drill blades are crucial to improving processing efficiency and ensuring processing quality. Crown drills are multi-edged and multi-point drill bits with replaceable drill tips. They are developed based on traditional group drilling technology and have significant advantages in chip breaking and removal, drilling centering, high quality, high efficiency and long-life drilling. In the specification of a blade structure in the prior art (Announcement No. CN202639458U), it is mentioned that "it includes a cutter body with a cross-shaped transverse cross section, the upper and lower parts of each cross side piece of the cutter body are rectangular sheets, and the upper and lower parts of each cross side piece of the cutter body are connected by a curved connecting piece, and a pointed protrusion is provided on the upper edge of each cross side piece of the cutter body", but the blade in the prior art is too long and thin, and the upper and lower parts of each cross side piece of the cutter body are connected by a curved connecting piece, which may cause breakage during high-speed cutting and grinding, and it is not safe and stable to use. Utility Model Content

[0003] In order to overcome the defects of the prior art, a high-efficiency and wear-resistant crown drill blade structure is provided to solve the problems in the prior art that the blade is too long and thin, and the upper and lower parts of each cross side piece of the cutter body are connected by a curved connecting piece, which may cause breakage during high-speed cutting and grinding, and is not safe and stable to use.

[0004] To achieve the above-mentioned purpose, a high-efficiency and wear-resistant crown drill blade structure is provided, including a blade, wherein the upper and lower side surfaces of the blade are provided with four groups of deep notches, and the left and right sides of each group of deep notches are provided with shallow notches, a middle connecting section is fixed at the center of the lower end surface of the blade, and a lower mounting rod is fixed at the lower end of the middle connecting section, and the centers of the blade, the middle connecting section and the lower mounting rod are all located on the same axis.

[0005] Furthermore, both the left and right parts of the blade are provided with upper through holes, and the upper through holes adopt a cylindrical through hole structure.

[0006] Furthermore, a middle sleeve hole is provided between the blade, the middle connecting section and the lower mounting rod, and the middle sleeve hole adopts a cylindrical sleeve hole structure.

[0007] Furthermore, two groups of side screw holes are provided on the left and right side surfaces of the lower mounting rod, and the side screw holes adopt a transverse cylindrical screw hole structure.

[0008] Furthermore, the blade, the middle connecting section and the lower mounting rod are all made of high-speed steel.

[0009] Furthermore, the blade, the middle connecting section and the lower mounting rod adopt an integrated structure, and the outer surfaces of the blade, the middle connecting section and the lower mounting rod are smooth and galvanized.

[0010] The beneficial effects of the utility model are:

[0011] 1. The deep notches and shallow notches arranged on the upper and lower sides of the blade in the utility model are used for crown drill processing, which is convenient for quickly cutting the crown drill into multiple faces. The two groups of deep notches and two groups of shallow notches on the upper and lower sides are aligned to facilitate the separation of waste chips to avoid accumulation on the blade, which is more convenient and saves trouble.

[0012] 2. The middle sleeve hole arranged between the middle blade, the middle connecting section and the lower mounting rod of the utility model facilitates the rod head sleeve installation of the tool mounting rod, which is not only safe, stable and firm, but also ensures the stability of the blade when processing crown drills, making it safer and more reliable to use.

[0013] 3. The side screw holes provided on the left and right sides of the lower mounting rod of the utility model are used to fasten the rod head of the tool mounting rod and the lower mounting rod through bolts, thereby enhancing the stability of the installation and making the use safer, more reliable and assured.

[0014] 4. The middle blade, middle connecting section and lower mounting rod of the utility model are made of strong and firm materials, which are stronger, more resistant to cutting and wear, and have a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a rendering of an embodiment of the utility model;

[0016] Figure 2 It is a top view schematic diagram of an embodiment of the utility model;

[0017] Figure 3 A bottom view schematic diagram of an embodiment of the utility model;

[0018] Figure 4 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0019] In the figure: 1, blade; 10, deep notch; 11, shallow notch; 12, middle connecting section; 13, lower mounting rod; 14, side screw hole; 15, middle sleeve hole; 16, upper through hole. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0021] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0022] Figure 1 The effect diagram of the embodiment of the utility model is as follows: Figure 2 A schematic top view of an embodiment of the utility model, Figure 3 A bottom view schematic diagram of an embodiment of the utility model and Figure 4 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0023] Reference Figures 1 to 4 As shown, the utility model provides a high-efficiency and wear-resistant crown drill blade structure, including a blade 1, wherein four groups of deep notches 10 are provided on the upper and lower sides of the blade 1, and shallow notches 11 are provided on the left and right sides of each group of deep notches 10, a middle connecting section 12 is fixed to the center of the lower end surface of the blade 1, and a lower mounting rod 13 is fixed to the lower end of the middle connecting section 12, and the centers of the blade 1, the middle connecting section 12 and the lower mounting rod 13 are all located on the same axis.

[0024] In this embodiment, both the left and right parts of the blade 1 are provided with upper through holes 16 , and the upper through holes 16 are cylindrical through hole structures.

[0025] As a preferred embodiment, the deep notches 10 and the shallow notches 11 provided on the upper and lower sides of the blade 1 in the utility model are used for crown drill processing, which facilitates the rapid cutting of the crown drill into multiple faces. The two groups of deep notches 10 and the two groups of shallow notches 11 on the upper and lower sides are aligned to facilitate the separation of waste chips to avoid accumulation on the blade 1, which is more convenient and saves trouble.

[0026] In this embodiment, a middle sleeve hole 15 is provided between the blade 1, the middle connecting section 12 and the lower mounting rod 13, and the middle sleeve hole 15 adopts a cylindrical sleeve hole structure.

[0027] As a preferred embodiment, the middle sleeve hole 15 arranged between the middle blade 1, the middle connecting section 12 and the lower mounting rod 13 of the utility model facilitates the rod head sleeve installation of the tool mounting rod, which is not only safe, stable and firm, but also ensures the stability of the blade 1 when processing crown drills, making it safer and more reliable to use.

[0028] In this embodiment, two groups of side screw holes 14 are provided on the left and right side surfaces of the lower mounting rod 13 , and the side screw holes 14 are of a transverse cylindrical screw hole structure.

[0029] As a preferred embodiment, the side screw holes 14 provided on the left and right sides of the lower mounting rod 13 of the utility model are used to fasten the rod head of the tool mounting rod and the lower mounting rod 13 by bolts, thereby enhancing the stability of the installation and making it safer, more reliable and assured to use.

[0030] In this embodiment, the blade 1, the middle connecting section 12 and the lower mounting rod 13 are all made of high-speed steel, the blade 1, the middle connecting section 12 and the lower mounting rod 13 adopt an integrated structure, and the outer surfaces of the blade 1, the middle connecting section 12 and the lower mounting rod 13 are smooth and galvanized.

[0031] As a preferred embodiment, the middle blade 1, the middle connecting section 12 and the lower mounting rod 13 of the utility model are made of strong and firm materials, which are stronger, more resistant to cutting and wear, and have a longer service life.

[0032] The utility model can effectively solve the problems in the prior art that the blade is too long and thin, and the upper and lower parts of each cross side piece of the cutter body are connected by a curved connecting piece, which may cause breakage during high-speed cutting and grinding, and is not safe and stable to use. The blade surface of the utility model is arranged firmly and firmly, and grooves of different depths are arranged, which is conducive to the rapid and successful processing of crown drills. Moreover, the middle connecting section and the lower mounting rod of the lower part of the blade adopt an integrated structure, so that the installation is more stable and firm, and it is not easy to fall off, thereby ensuring that the processing of crown drills is safer and more reliable.

[0033] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A highly efficient and wear-resistant crown drill blade structure, characterized by: The invention comprises a blade (1), wherein the upper and lower side surfaces of the blade (1) are each provided with four groups of deep notches (10), and each group of deep notches (10) is provided with shallow notches (11) on both left and right sides, a middle connecting section (12) is fixed at the center of the lower end surface of the blade (1), and a lower mounting rod (13) is fixed at the lower end of the middle connecting section (12), and the centers of the blade (1), the middle connecting section (12) and the lower mounting rod (13) are all located on the same axis.

2. The high-efficiency and wear-resistant crown drill blade structure according to claim 1 is characterized in that: The left and right parts of the blade (1) are both provided with an upper through hole (16), and the upper through hole (16) adopts a cylindrical through hole structure.

3. The high-efficiency wear-resistant crown drill blade structure according to claim 1, characterized in that: A middle sleeve hole (15) is provided between the blade (1), the middle connecting section (12) and the lower mounting rod (13), and the middle sleeve hole (15) adopts a cylindrical sleeve hole structure.

4. The high-efficiency wear-resistant crown drill blade structure according to claim 1, characterized in that: Two groups of side screw holes (14) are arranged on the left and right side surfaces of the lower mounting rod (13), and the side screw holes (14) adopt a transverse cylindrical screw hole structure.

5. The high-efficiency and wear-resistant crown drill blade structure according to claim 1 is characterized in that: The blade (1), the middle connecting section (12) and the lower mounting rod (13) are all made of high-speed steel.

6. The high-efficiency and wear-resistant crown drill blade structure according to claim 1, characterized in that: The blade (1), the middle connecting section (12) and the lower mounting rod (13) adopt an integrated structure, and the outer surfaces of the blade (1), the middle connecting section (12) and the lower mounting rod (13) are smooth and galvanized.

Images