Split combined type high-hardness drill bit

Abstract

The utility model discloses a split combined type high hardness drill bit, which comprises a mounting handle, a combined joint, a combined rod, a connecting disc and a cutting drill bit, the combined joint is provided with a circular groove used for clamping and connecting the connecting disc, and the circular groove is internally provided with an insertion clamping groove used for clamping and connecting the combined rod. The connecting disc is provided with first locking bolts which are connected with the combined connector and distributed in an annular array mode, and second locking bolts which are connected with the combined rod and distributed at equal intervals are arranged on the peripheral side of the combined connector. The high-hardness drill bit is divided into two parts, so that only the drill bit part needs to be replaced when the drill bit is abraded or damaged in the later period, the use cost of the drill bit is reduced, and replacement and use are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-hardness drill bits, and in particular relates to a split combined high-hardness drill bit. Background Art

[0002] A drill bit is a cutting tool used by general drills or drilling machines to cut out circular holes. The basic principle of a drill bit is to rotate the drill bit cutting edge, cut the workpiece, and then remove the drill chips through the drill groove. Depending on the target workpiece, drill bits are classified by functionality.

[0003] The drill bit will wear out or break after long-term use. Generally, the drill bit needs to be replaced. However, the drill bits are all integral and the entire drill bit needs to be replaced, which increases the material cost of the drill bit and makes replacement inconvenient. For this reason, we propose a split combined high-hardness drill bit. Utility Model Content

[0004] The purpose of the utility model is to provide a split combined high-hardness drill bit to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a split modular high-hardness drill bit, comprising a mounting handle, a modular joint, a modular rod, a connecting disk and a cutting drill bit, the modular joint being provided with a circular groove for engaging and connecting the connecting disk, the circular groove being provided with a plug-in slot for engaging the modular rod, the connecting disk being provided with first locking bolts distributed in an annular array and connected to the modular joint, and the outer peripheral side of the modular joint being provided with second locking bolts distributed at equal intervals and connected to the modular rod.

[0006] Preferably, the mounting handle and the combined joint are an integrated structure.

[0007] Preferably, the combination rod, the connecting plate and the cutting drill bit are an integrated structure.

[0008] Preferably, the mounting handle, the combination joint, the combination rod, the connecting plate and the cutting drill bit are on the same axis.

[0009] Preferably, the plug-in slot is a square slot with a protrusion, the combination rod is a square plug-in rod with a groove, and the combination rod is limitedly plugged into the plug-in slot.

[0010] Preferably, a first bolt hole is provided at a position of the connecting disk and the circular groove corresponding to the first locking bolt, and the first locking bolt is threaded into the first bolt hole to lock and connect the connecting disk and the combined joint.

[0011] Preferably, a second bolt hole is opened on the outer circumference of the combined joint and the outer side of the combined rod at a position corresponding to the second locking bolt, and the second locking bolt is threaded into the second bolt hole to lock the combined joint and the combined rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model is provided with a combined joint, a combined rod, a connecting plate, a first locking bolt and a second locking bolt. When installing, the combined rod is aligned with the plug-in slot and inserted, and the connecting plate is engaged in the circular groove, and then the first locking bolt is screwed into the first bolt hole to lock and connect the connecting plate and the combined joint, and then the second locking bolt is screwed into the second bolt hole to lock and connect the combined joint and the combined rod; when disassembling and replacing, the first locking bolt and the second locking bolt are respectively loosened and removed, and then the combined rod, the connecting plate and the cutting drill bit can be removed from the combined joint, and a new combined rod, the connecting plate and the cutting drill bit can be replaced. The high-hardness drill bit is divided into two parts, so that when the drill bit is worn or damaged in the later stage, only the drill bit part needs to be replaced, thereby reducing the use cost of the drill bit and facilitating replacement and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model;

[0017] Figure 4 It is a partial three-dimensional structural schematic diagram of the utility model;

[0018] Figure 5 It is a partial three-dimensional structural schematic diagram of the utility model.

[0019] In the figure: 1. mounting handle; 2. combination joint; 3. combination rod; 4. connecting plate; 5. cutting drill bit; 6. round groove; 7. plug-in slot; 8. first locking bolt; 9. second locking bolt; 10. first bolt hole; 11. second bolt hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 5 The utility model provides a split combined high-hardness drill bit, comprising a mounting handle 1, a combined joint 2, a combined rod 3, a connecting disc 4 and a cutting drill bit 5. The mounting handle 1 and the combined joint 2 are an integrated structure, the combined rod 3, the connecting disc 4 and the cutting drill bit 5 are an integrated structure, the mounting handle 1, the combined joint 2, the combined rod 3, the connecting disc 4 and the cutting drill bit 5 are on the same axis, a circular groove 6 for engaging and connecting the connecting disc 4 is provided on the combined joint 2, a plug-in card slot 7 for plugging the combined rod 3 is provided in the circular groove 6, the plug-in card slot 7 is a square card slot with a protrusion, the combined rod 3 is a square plug-in rod with a groove, and the combined rod 3 is limitedly plugged into the plug-in card slot 7, The connecting plate 4 is provided with first locking bolts 8 distributed in a circular array and connected to the combined joint 2. First bolt holes 10 are provided at positions corresponding to the first locking bolts 8 in the connecting plate 4 and the circular groove 6. The first locking bolt 8 is screwed into the first bolt hole 10, so that the connecting plate 4 and the combined joint 2 are locked and connected. The outer peripheral side of the combined joint 2 is provided with second locking bolts 9 distributed at equal intervals and connected to the combined rod 3. Second bolt holes 11 are provided on the outer peripheral side of the combined joint 2 and the outer side of the combined rod 3 at positions corresponding to the second locking bolts 9. The second locking bolt 9 is screwed into the second bolt hole 11, so that the combined joint 2 and the combined rod 3 are locked and connected.

[0022] The utility model is provided with a combined joint 2, a combined rod 3, a connecting plate 4, a first locking bolt 8 and a second locking bolt 9. When installing, the combined rod 3 is aligned with the plug-in slot 7 and inserted, and the connecting plate 4 is engaged in the circular groove 6, and then the first locking bolt 8 is screwed into the first bolt hole 10 to lock and connect the connecting plate 4 and the combined joint 2, and then the second locking bolt 9 is screwed into the second bolt hole 11 to lock and connect the combined joint 2 and the combined rod 3; when disassembling and replacing, the first locking bolt 8 and the second locking bolt 9 are loosened and removed respectively, and then the combined rod 3, the connecting plate 4 and the cutting drill bit 5 can be removed from the combined joint 2, and a new combined rod 3, the connecting plate 4 and the cutting drill bit 5 can be replaced. The high-hardness drill bit is divided into a two-part structure, which is convenient for replacing only the drill bit part when the drill bit is worn or damaged in the later stage, thereby reducing the use cost of the drill bit and facilitating replacement and use.

[0023] To summarize, the method for using the split combined high-hardness drill bit provided in the present embodiment is as follows: during installation, align the combined rod 3 with the plug-in slot 7 and insert it, and engage the connecting plate 4 in the circular groove 6, and then use the first locking bolt 8 to be threaded into the first bolt hole 10 to lock the connecting plate 4 and the combined joint 2 in connection, and then use the second locking bolt 9 to be threaded into the second bolt hole 11 to lock the combined joint 2 and the combined rod 3 in connection; during disassembly and replacement, loosen and remove the first locking bolt 8 and the second locking bolt 9 respectively, and then remove the combined rod 3, the connecting plate 4 and the cutting drill bit 5 from the combined joint 2, and replace them with new combined rod 3, the connecting plate 4 and the cutting drill bit 5.

[0024] 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 split combined high hardness drill bit, characterized in that: The invention comprises a mounting handle (1), a combined joint (2), a combined rod (3), a connecting plate (4) and a cutting drill bit (5); the combined joint (2) is provided with a circular groove (6) for engaging and connecting the connecting plate (4); the circular groove (6) is provided with a plug-in slot (7) for engaging the combined rod (3); the connecting plate (4) is provided with first locking bolts (8) distributed in an annular array and connected to the combined joint (2); and the outer peripheral side of the combined joint (2) is provided with second locking bolts (9) distributed at equal intervals and connected to the combined rod (3).

2. The split combined high hardness drill bit according to claim 1, characterized in that: The installation handle (1) and the combined joint (2) are an integrated structure.

3. The split combined high hardness drill bit according to claim 1, characterized in that: The combined rod (3), the connecting plate (4) and the cutting drill bit (5) are an integrated structure.

4. The split combined high hardness drill bit according to claim 1, characterized in that: The mounting handle (1), the combined joint (2), the combined rod (3), the connecting plate (4) and the cutting drill bit (5) are located on the same axis.

5. The split combined high hardness drill bit according to claim 1, characterized in that: The plug-in card slot (7) is a square card slot with a protrusion, the combination rod (3) is a square plug-in rod with a groove, and the combination rod (3) is limitedly plugged into the plug-in card slot (7).

6. The split combined high hardness drill bit according to claim 1, characterized in that: A first bolt hole (10) is provided at a position corresponding to the first locking bolt (8) in the connecting plate (4) and the circular groove (6), and the first locking bolt (8) is screwed into the first bolt hole (10) so that the connecting plate (4) and the combined joint (2) are locked and connected.

7. The split combined high hardness drill bit according to claim 1, characterized in that: A second bolt hole (11) is provided on the outer peripheral side of the combined joint (2) and the outer side of the combined rod (3) at a position corresponding to the second locking bolt (9); the second locking bolt (9) is screwed into the second bolt hole (11) so that the combined joint (2) and the combined rod (3) are locked and connected.

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