Three-blade staggered-tooth inner chip removal deep hole drill

Abstract

The utility model provides a three-edge staggered tooth inner chip removal deep hole drill, which belongs to the technical field of deep hole drills, and comprises a drill bit main body, blade grooves, blades, chip removal holes and an elastic positioning column, the outer end part of the drill bit main body is provided with three blade grooves, the blades are embedded in the blade grooves, the chip removal holes are formed in the center of the outer end of the drill bit main body, and the elastic positioning column is arranged in the chip removal holes. Elastic positioning columns are embedded into the ends, close to the outer side of the drill bit body, of the blade grooves; when the blade is damaged and needs to be repaired, the elastic positioning column is completely embedded into the embedding hole by pressing the elastic positioning column, the elastic positioning column cannot block the blade, then the blade and the widening strip are taken out of the blade groove to repair the blade, and a new blade is installed on the drill bit body. And the drill bit main body does not need to be taken down from a machine tool, so that the debugging time is saved, the working continuity of the drill bit main body is ensured, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of deep hole drilling, in particular to a three-edge staggered tooth internal chip removal deep hole drill. Background Art

[0002] The three-edge staggered teeth internal chip removal deep hole drill is a highly efficient deep hole processing tool, which features a three-edge staggered teeth design and internal chip removal mechanism to improve cutting performance and drilling quality;

[0003] The head of the cutter body for three-edge staggered teeth internal chip removal deep hole drilling is provided with a chip removal hole, three blade slots and three blades. When the blades are installed in the blade slots, they are usually installed by welding. When the blades are damaged and need to be repaired, the cutter body needs to be taken out from the machine tool to repair the blades. After the cutter body is repaired, the drill bit can be installed on the machine tool to process the workpiece, or a new drill bit can be replaced to process the workpiece. After the drill bit is removed from the machine tool, when the drill bit is installed on the machine tool again, the drilling position of the drill bit needs to be debugged for a long time to ensure the normal processing of the drill bit, which affects the work efficiency. Therefore, a three-edge staggered teeth internal chip removal deep hole drill is designed to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a three-edge staggered-tooth internal chip removal deep hole drill.

[0005] The technical problem to be solved by the utility model is to provide a three-edge staggered tooth internal chip removal deep hole drill, which solves the problem that after the blade on the three-edge staggered tooth internal chip removal deep hole drill in the prior art is damaged, the drill bit needs to be removed to repair the blade, which affects the work efficiency.

[0006] The utility model provides a three-edge staggered-tooth internal chip removal deep hole drill, comprising a drill body, a blade slot, a blade, a chip removal hole and an elastic positioning column, wherein the outer end of the drill body is provided with three blade slots, blades are embedded in the blade slots, a chip removal hole is provided at the center of the outer end of the drill body, and an elastic positioning column is embedded at one end of the blade slot close to the outer side of the drill body.

[0007] Preferably, the blade groove is in a "convex" shape with a narrow width in the straight opening direction, and one end of the blade groove passes through the side surface of the drill body, and the other end passes through another blade groove.

[0008] Preferably, the angle formed by two adjacent blade grooves is 60°.

[0009] Preferably, the blade comprises a widening strip, the widening strip matches the bottom of the blade slot, and the length of the widening strip is smaller than the length of the blade slot.

[0010] Preferably, when the blade and the widening strip are completely embedded in the blade slot, the elastic positioning column is tightly attached to the end of the widening strip.

[0011] Preferably, an embedding hole matching the elastic positioning column is formed at one end of the blade slot close to the outer side of the drill body, a spring is fixedly arranged at the bottom of the elastic positioning column, and the bottom of the spring is fixedly arranged at the bottom of the embedding hole.

[0012] Preferably, when the spring is in a maximum compression state, the elastic positioning column is completely embedded in the embedding hole, and when the spring is in a natural extension state, half of the elastic positioning column extends out of the embedding hole.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] 1. When installing the blade in the blade slot, the utility model presses the elastic positioning column downward so that the elastic positioning column is completely embedded in the embedding hole, and then the blade and the widening strip are inserted into the blade slot from the end of the blade slot, so that the three blades respectively block the adjacent blade slots and the blade slot penetration of the blade installation, and then the three blades are pushed into the blade slot in sequence until the three blades contact each other. Under the action of the spring force, half of the elastic positioning column extends out of the embedding hole, and the elastic positioning column abuts against the end of the widening strip on the blade, so as to achieve the effect of positioning the blade installed in the blade slot, prevent the blade from falling out of the blade slot, and ensure the stability of the blade installation.

[0015] 2. When the blade of the utility model is damaged and needs to be repaired, the elastic positioning column is pressed so that the elastic positioning column is completely embedded in the embedding hole, and the elastic positioning column will not block the blade. Then the blade and the widening strip are taken out from the blade groove to repair the blade, and the new blade is installed on the drill body, so that the drill body can continue to process the workpiece without removing the drill body from the machine tool, eliminating the debugging time, ensuring the continuity of the drill body's operation, and increasing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the drill head main body of the utility model.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the blade of the utility model.

[0020] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0021] Figure 5 For this utility model Figure 4 Schematic diagram of the decomposition structure.

[0022] Figure 6 For this utility model Figure 1 Enlarged structural diagram at B in the middle.

[0023] [reference numerals]

[0024] 1. Drill bit body; 2. Blade slot; 201. Embedding hole; 3. Blade; 301. Widening strip; 4. Chip removal hole; 5. Elastic positioning column; 501. Spring. DETAILED DESCRIPTION

[0025] Example:

[0026] like Figure 1-Figure 6 As shown, an embodiment of the utility model provides a three-edged staggered-tooth internal chip removal deep hole drill, comprising a drill body 1, a blade slot 2, a blade 3, a chip removal hole 4 and an elastic positioning column 5. Three blade slots 2 are provided at the outer end of the drill body 1, and blades 3 are embedded in the blade slots 2. A chip removal hole 4 is provided in the center of the outer end of the drill body 1, and an elastic positioning column 5 is embedded at one end of the blade slot 2 close to the outer side of the drill body 1.

[0027] In this embodiment, the blade groove 2 is in a "convex" shape with a narrow width in the straight opening direction, and one end of the blade groove 2 passes through the side of the drill body 1, and the other end passes through another blade groove 2, so that the three blades 3 are conveniently embedded in the blade groove 2 from the end of the blade groove 2 for installation of the blades.

[0028] In this embodiment, the angle formed by two adjacent blade slots 2 is 60°, ensuring that when the three blades 3 are installed in the blade slot 2, the chip removal hole 4 is located in the center of the three blades 3, which is convenient for chip removal through the chip removal hole 4, and when the drill body 1 drives the three blades 3 to rotate, drilling can be performed normally.

[0029] In this embodiment, the blade 3 includes a widening strip 301, which matches the bottom of the blade slot 2, and the length of the widening strip 301 is less than the length of the blade slot 2, so that when the blade 3 and the widening strip 301 are installed in the blade slot 2, the blade 3 will not directly fall out from the outer end of the blade slot 2.

[0030] In this embodiment, when the blade 3 and the widening strip 301 are completely embedded in the blade slot 2, the elastic positioning column 5 is tightly attached to the end of the widening strip 301, so that the elastic positioning column 5 can limit the blade 3 embedded in the blade slot 2 and prevent the blade 3 from escaping from the end of the blade slot 2.

[0031] In this embodiment, an embedding hole 201 matching the elastic positioning column 5 is opened at one end of the blade slot 2 close to the outer side of the drill body 1, and a spring 501 is fixedly arranged at the bottom of the elastic positioning column 5. The bottom of the spring 501 is fixedly arranged at the bottom of the embedding hole 201 to ensure that the elastic positioning column 5 has resilience.

[0032] In this embodiment, when the spring 501 is in the maximum compression state, the elastic positioning column 5 is completely embedded in the embedding hole 201. At this time, it is convenient to install the blade 3. When the spring 501 is in the natural extension state, half of the elastic positioning column 5 extends out of the embedding hole 201. At this time, the elastic positioning column 5 can position the blade 3.

[0033] Working principle:

[0034] When installing the blade 3 in the blade slot 2, the elastic positioning column 5 is squeezed downward so that the elastic positioning column 5 is completely embedded in the embedding hole 201, and then the blade 3 and the widening strip 301 are inserted into the blade slot 2 from the end of the blade slot 2, so that the three blades 3 respectively block the adjacent blade slots 2 and the blade slot 2 where the blade 3 is installed, and then the three blades 3 are pushed into the blade slot 2 in sequence until the three blades 3 contact each other. Under the action of the elastic force of the spring 501, half of the elastic positioning column 5 extends out of the embedding hole 201, and the elastic positioning column 5 is against the end of the widening strip 301 on the blade, so as to achieve the effect of positioning the blade 3 installed in the blade slot 2, prevent the blade 3 from escaping from the blade slot 2, and ensure the stability of the installation of the blade 3;

[0035] When the blade 3 is damaged and needs to be repaired, the elastic positioning column 5 is pressed so that the elastic positioning column 5 is completely embedded in the embedding hole 201, and the elastic positioning column 5 will not block the blade 3. Then the blade 3 and the widening strip 301 are taken out from the blade groove 2 to repair the blade 3, and the new blade 3 is installed on the drill body 1. This can ensure that the drill body 1 continues to process the workpiece without removing the drill body 1 from the machine tool, eliminating debugging time, ensuring the continuity of the drill body 1, and increasing work efficiency.

[0036] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A three-edge staggered-tooth internal chip removal deep hole drill, characterized in that: The drill bit comprises a drill body (1), a blade slot (2), a blade (3), a chip removal hole (4) and an elastic positioning column (5); the outer end of the drill bit body (1) is provided with three blade slots (2), the blades (3) are embedded in the blade slots (2), the chip removal hole (4) is provided in the center of the outer end of the drill bit body (1), and the elastic positioning column (5) is embedded in one end of the blade slot (2) close to the outer side of the drill bit body (1).

2. The three-edge staggered-tooth internal chip removal deep hole drill according to claim 1, characterized in that: The blade slot (2) is in the shape of a "convex" character with a narrow width in the straight opening direction, and one end of the blade slot (2) penetrates the side surface of the drill body (1), and the other end penetrates another blade slot (2).

3. The three-edge staggered-tooth internal chip removal deep hole drill according to claim 2, characterized in that: The angle formed by two adjacent blade grooves (2) is 60°.

4. The three-edge staggered-tooth internal chip removal deep hole drill according to claim 3, characterized in that: The blade (3) comprises a widening strip (301), the widening strip (301) matches the bottom of the blade slot (2), and the length of the widening strip (301) is less than the length of the blade slot (2).

5. The three-edge staggered-tooth internal chip removal deep hole drill according to claim 4, characterized in that: When the blade (3) and the widening strip (301) are completely embedded in the blade groove (2), the elastic positioning column (5) is tightly attached to the end of the widening strip (301).

6. The three-edge staggered-tooth internal chip removal deep hole drill according to claim 5, characterized in that: An embedding hole (201) matching with the elastic positioning column (5) is provided at one end of the blade slot (2) close to the outside of the drill body (1); a spring (501) is fixedly arranged at the bottom of the elastic positioning column (5); and the bottom of the spring (501) is fixedly arranged at the bottom of the embedding hole (201).

7. The three-edge staggered-tooth internal chip removal deep hole drill according to claim 6, characterized in that: When the spring (501) is in the maximum compression state, the elastic positioning column (5) is completely embedded in the embedding hole (201), and when the spring (501) is in the natural extension state, half of the elastic positioning column (5) extends out of the embedding hole (201).

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