Lengthened active chip breaking drill bit for deep hole machining

Abstract

The utility model discloses a lengthened active chip breaking drill bit for deep hole machining, which comprises a drill bit cutting section, a drill bit connecting section and a drill bit lengthening section, the drill bit cutting section and the drill bit connecting section are of an integrated structure, and the drill bit connecting section and the drill bit lengthening section are locked and connected through a locking bolt; the drill bit cutting section comprises a feeding cutting edge and a chip groove, the feeding cutting edge is arranged at the drill bit feeding position of the drill bit cutting section, the chip groove is spirally formed in the peripheral side of a round rod of the drill bit cutting section, and a chip breaking unit is arranged in the chip groove. According to the drill bit, the drill bit cutting section and the drill bit connecting section can be replaced conveniently, the use cost of the drill bit is reduced, the single chip breaking blade or the double chip breaking blades can conduct active chip breaking treatment on chips, the overlong chips are cut off in time, the situation that the overlong chips wind the drill bit is avoided, and normal use of the drill bit is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and in particular relates to an elongated active chip-breaking drill bit for deep hole processing. Background Art

[0002] A drill bit is a tool used to drill through holes or blind holes in solid materials, and can also expand existing holes. Commonly used drill bits include twist drills, flat drills, center drills, deep hole drills and casing drills. Although reaming drills and countersinks cannot drill holes in solid materials, they are customarily classified as drill bits.

[0003] For deep hole processing, an extended drill bit is required for drilling. The existing extended drill bits are mostly one-piece structures. When the cutting part of the drill bit is broken or damaged, it needs to be replaced as a whole, which increases the cost of using the drill bit. In addition, when processing deep holes, the chips are not easy to be discharged. The entire chip is too long and easily entangled with the drill bit, which affects the drilling process of the drill bit. For this reason, we propose an extended active chip breaking drill bit for deep hole processing. Utility Model Content

[0004] The utility model aims to provide an extended active chip-breaking drill for deep hole processing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extended active chip-breaking drill bit for deep hole processing, comprising a drill cutting section, a drill connecting section and a drill extending section, wherein the drill cutting section and the drill connecting section are an integrated structure, and the drill connecting section and the drill extending section are locked and connected by a locking bolt;

[0006] The drill cutting section comprises a feed cutting edge and a chip groove, wherein the feed cutting edge is arranged at the drill feeding position of the drill cutting section, the chip groove is spirally arranged on the outer peripheral side of the round rod of the drill cutting section, and a chip breaking unit is arranged in the chip groove.

[0007] Preferably, a plug-in groove is provided on the drill bit connecting section, and a plug-in rod is provided on the drill bit extension section, and the drill bit connecting section and the drill bit extension section are plug-connected via the plug-in groove and the plug-in rod.

[0008] Preferably, the plug-in slot and the plug-in rod are both hexagonal structures.

[0009] Preferably, the plug-in slot and the plug-in rod are both provided with bolt holes matched with the locking bolt.

[0010] Preferably, at least two chip removal grooves are provided, and one chip breaking unit is provided in each chip removal groove.

[0011] Preferably, the chip breaking unit is a single chip breaking edge or a double chip breaking edge, and the single chip breaking edge and the double chip breaking edge are respectively arranged in adjacent chip removal grooves.

[0012] Preferably, a chip breaking groove is provided in the middle of the double chip breaking edge.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a drill bit connecting section, a drill bit extension section, a plug-in slot, a plug-in rod and a locking bolt. When in use, the drill bit extension section can be plugged into the plug-in slot on the drill bit connecting section through the plug-in rod, and then the drill bit connecting section and the drill bit extension section are locked and fixed by the locking bolt, so that the drill bit can be lengthened for deep hole processing. When the drill bit cutting section is damaged, the drill bit cutting section and the drill bit connecting section can be replaced with new ones, thereby reducing the use cost of the drill bit and facilitating installation and disassembly.

[0015] 2. The utility model provides a single chip breaking blade or a double chip breaking blade in the chip groove, and a chip breaking groove is provided in the middle of the double chip breaking blade. The single chip breaking blade or the double chip breaking blade can actively break the chips, so that the excessively long chips can be cut off in time, avoiding the excessively long chips from wrapping around the drill bit, thereby ensuring the normal use of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model;

[0019] Figure 4 It is a partial three-dimensional structural schematic diagram of the utility model.

[0020] In the figure: 1. drill cutting section; 101. feed cutting edge; 102. chip groove; 103. chip breaking unit; 1031. single chip breaking edge; 1032. double chip breaking edge; 104. chip breaking groove; 2. drill connecting section; 201. plug-in slot; 3. drill extension section; 301. plug-in rod; 4. locking bolt; 5. bolt hole. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 4 The utility model provides an extended active chip-breaking drill bit for deep hole processing, comprising a drill cutting section 1, a drill connecting section 2 and a drill extending section 3. The drill cutting section 1 and the drill connecting section 2 are an integrated structure. The drill connecting section 2 and the drill extending section 3 are locked and connected by a locking bolt 4. A plug-in slot 201 is provided on the drill connecting section 2. A plug-in rod 301 is provided on the drill extending section 3. The drill connecting section 2 and the drill extending section 3 are plug-in connected by the plug-in slot 201 and the plug-in rod 301. Both the plug-in slot 201 and the plug-in rod 301 are hexagonal structures. Both the plug-in slot 201 and the plug-in rod 301 are provided with bolt holes 5 that are compatible with the locking bolt 4.

[0023] The utility model is provided with a drill bit connecting section 2, a drill bit extension section 3, an inserting groove 201, an inserting rod 301 and a locking bolt 4. When in use, the drill bit extension section 3 can be inserted into the inserting groove 201 on the drill bit connecting section 2 through the inserting rod 301, and then the drill bit connecting section 2 and the drill bit extension section 3 are locked and fixed by the locking bolt 4, so that the drill bit can be extended and used for deep hole processing. When the drill bit cutting section 1 is damaged, the drill bit cutting section 1 and the drill bit connecting section 2 can be replaced with new ones, thereby reducing the use cost of the drill bit and facilitating installation and disassembly.

[0024] The drill cutting section 1 comprises a feed cutting edge 101 and a chip groove 102. The feed cutting edge 101 is arranged at the drill feeding position of the drill cutting section 1. The chip groove 102 is spirally arranged on the outer peripheral side of the round rod of the drill cutting section 1. A chip breaking unit 103 is arranged in the chip groove 102. At least two chip grooves 102 are arranged. Each chip groove 102 is provided with a chip breaking unit 103. The chip breaking unit 103 is a single chip breaking edge 1031 or a double chip breaking edge 1032. The single chip breaking edge 1031 and the double chip breaking edge 1032 are respectively arranged in adjacent chip grooves 102. The middle part of the double chip breaking edge 1032 is provided with a chip breaking groove 104.

[0025] The utility model arranges a single chip breaking blade 1031 or a double chip breaking blade 1032 on the chip groove 102, and a chip breaking groove 104 is arranged in the middle of the double chip breaking blade 1032. The single chip breaking blade 1031 or the double chip breaking blade 1032 can actively break the chips, so that the excessively long chips are cut off in time, and the chips are prevented from being too long and entangled with the drill bit, thereby ensuring the normal use of the drill bit.

[0026] Although the 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. An extended active chip-breaking drill for deep hole machining, characterized in that: The drill bit cutting section (1), the drill bit connecting section (2) and the drill bit extension section (3) are integrally formed, and the drill bit connecting section (2) and the drill bit extension section (3) are locked and connected via a locking bolt (4); The drill cutting section (1) comprises a feed cutting edge (101) and a chip removal groove (102); the feed cutting edge (101) is arranged at a drill feeding position of the drill cutting section (1); the chip removal groove (102) is spirally arranged on the outer circumference of a round rod of the drill cutting section (1); and a chip breaking unit (103) is arranged in the chip removal groove (102).

2. The extended active chip-breaking drill bit for deep hole machining according to claim 1, characterized in that: The drill bit connecting section (2) is provided with a plug-in slot (201), and the drill bit extension section (3) is provided with a plug-in rod (301). The drill bit connecting section (2) and the drill bit extension section (3) are plug-connected via the plug-in slot (201) and the plug-in rod (301).

3. The extended active chip-breaking drill bit for deep hole machining according to claim 2, characterized in that: The plug-in slot (201) and the plug-in rod (301) are both hexagonal structures.

4. The extended active chip-breaking drill bit for deep hole machining according to claim 3, characterized in that: The plug-in slot (201) and the plug-in rod (301) are both provided with a bolt hole (5) that matches the locking bolt (4).

5. The extended active chip-breaking drill bit for deep hole machining according to claim 1, characterized in that: At least two chip removal grooves (102) are provided, and one chip breaking unit (103) is provided in each chip removal groove (102).

6. The extended active chip-breaking drill bit for deep hole machining according to claim 5, characterized in that: The chip breaking unit (103) is a single chip breaking blade (1031) or a double chip breaking blade (1032), and the single chip breaking blade (1031) and the double chip breaking blade (1032) are respectively arranged in adjacent chip removal grooves (102).

7. The extended active chip-breaking drill bit for deep hole machining according to claim 6, characterized in that: A chip breaking groove (104) is provided in the middle of the double chip breaking edge (1032).

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