Stepped drilling reamer

Abstract

The utility model discloses a stepped drilling reamer which comprises a body, the body sequentially comprises a cutter handle part, a reamer part and a drill bit part in the length direction, the cutter handle part and the drill bit part are located at the two ends of the body respectively, and the reamer part is located between the cutter handle part and the drill bit part and comprises a plurality of reamer sections. The outer diameters of the plurality of reamer sections are gradually reduced in the direction from the handle part to the drill bit part; the body further comprises a plurality of chip grooves which are sequentially formed in the outer wall of the body in the circumferential direction, each chip groove is also formed in the length direction of the body, and the two ends of each chip groove are communicated with the cutter handle part and the drill bit part respectively. According to the reamer, the reamer sections with the different outer diameters are arranged on the reamer part, so that in the actual drilling and reaming operation, the reamer sections with the different outer diameters can be used for reaming according to the manufacturing requirements so as to form holes with different inner diameters, the cutter does not need to be frequently replaced, the use convenience of the cutter is improved, and meanwhile, the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drill reamer, in particular to a stepped drill reamer. Background Art

[0002] A drill reamer is a multifunctional cutting tool that combines the functions of a drill bit and a reamer, and can complete the processing of drilling and reaming in the same process. A drill reamer usually consists of three parts: a drill bit, a reamer and a tool holder.

[0003] The method of using a drill reamer is to first use a drill to drill a hole, and then use a reamer to ream the hole. This processing method can improve processing efficiency, reduce the number of processing times and tool changes, and at the same time ensure processing accuracy and surface quality.

[0004] However, in the prior art, a single drill reamer can only process holes of a single diameter. When multiple holes of different diameters need to be processed in one drilling project, the tool still needs to be replaced frequently, which is inconvenient to use and affects production efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a stepped drill reamer, comprising:

[0006] The main body includes a shank portion, a reamer portion and a drill portion in sequence along the length direction. The shank portion and the drill portion are respectively located at two ends of the main body. The reamer portion is located between the shank portion and the drill portion. The reamer portion includes multiple reamer segments. The outer diameters of the multiple reamer segments decrease in sequence from the shank portion to the drill portion.

[0007] The body also includes a plurality of chip removal grooves which are sequentially arranged on the outer wall of the body along the circumferential direction. Each chip removal groove is also arranged along the length direction of the body, and its two ends are respectively connected to the shank part and the drill head part.

[0008] According to one embodiment of the utility model, the reamer portion further comprises a plurality of isolation grooves, which are used to prevent interference between adjacent reamer segments, and the plurality of isolation grooves and the plurality of reamer segments are alternately arranged in sequence.

[0009] According to an embodiment of the utility model, each chip removal groove is spirally arranged along the circumferential direction of the outer wall of the main body.

[0010] According to one embodiment of the utility model, the main body further comprises a plurality of liquid injection through holes, each of which is provided through both ends of the main body, and the plurality of liquid injection through holes are arranged circumferentially along the central axis of the main body.

[0011] According to an embodiment of the utility model, each liquid injection through hole is also arranged in a spiral along the circumferential direction of the central axis of the body, and a plurality of liquid injection through holes and a plurality of chip removal grooves are arranged alternately in sequence.

[0012] According to one embodiment of the utility model, a connecting groove is provided at one end of the shank portion facing away from the reamer portion. The connecting groove is radially arranged to penetrate through one end of the shank portion, and one end of the injection through hole is located in the connecting groove.

[0013] According to an embodiment of the utility model, the shank portion, the reamer portion and the drill head portion are integrally formed of the same material.

[0014] According to an embodiment of the utility model, both the isolation groove and the chip removal groove are formed by being recessed inwardly from the surface of the body.

[0015] The beneficial effect of the utility model is that by arranging a plurality of reamer segments with different outer diameters on the reamer part, in actual drilling and reaming operations, reamer segments with different outer diameters can be used to carry out reaming according to manufacturing requirements to form holes with different inner diameters, without the need to frequently replace the tool, thereby improving the convenience of using the tool and at the same time improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is one of the schematic diagrams of the stepped drill reamer structure in the embodiment;

[0018] Figure 2 This is the second schematic diagram of the stepped drill reamer structure in the embodiment;

[0019] Figure 3 for Figure 1 Enlarged view of part A in the middle;

[0020] Figure 4 Schematic diagram of the connecting groove structure in the embodiment. DETAILED DESCRIPTION

[0021] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0022] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0023] See also Figure 1-Figure 2 , Figure 1 This is one of the schematic diagrams of the stepped drill reamer structure in the embodiment. Figure 2 This is the second schematic diagram of the structure of the stepped drill reamer in the embodiment. In this example, a stepped drill reamer comprises a body 1, along the length direction of the body 1, the body 1 comprises a shank portion 11, a reamer portion 12 and a drill head portion 13 in sequence, wherein the shank portion 11 and the drill head portion 13 are respectively located at two ends of the body 1, the reamer portion 12 is located between the shank portion 11 and the drill head portion 13, the reamer portion 12 comprises a plurality of reamer segments 121, and the outer diameters of the plurality of reamer ends 121 decrease in sequence from the shank portion 11 toward the drill head portion 13.

[0024] The body 1 further includes a plurality of chip removal grooves 14 circumferentially disposed on the outer wall of the body 1 . Each chip removal groove 14 is disposed along the length direction of the body 1 , and both ends thereof are connected to the shank portion 11 and the drill head portion 13 .

[0025] Among them, the shank portion 11 is used to be installed on a drilling machine, and the chip groove 14 is used to discharge waste chips when drilling. When in use, after the drill head 13 drills a hole, since the outer diameters of the multiple reamer segments 121 are different, reamer segments 121 with different outer diameters can be used to ream holes according to manufacturing requirements to form holes with different inner diameters. There is no need to frequently replace the tool, which improves the convenience of using the tool and improves production efficiency at the same time.

[0026] See also Figure 3 , review Figure 1-Figure 2 , Figure 3 for Figure 1Further, the reamer part 12 also includes a plurality of separation grooves 122, and the plurality of separation grooves 122 and the plurality of reamer segments 121 are arranged alternately in sequence, that is, an separation groove 122 is provided between every two adjacent reamer segments 121, and the separation groove 122 is formed by a depression in the surface of the body 1, thereby forming a gap between every two adjacent reamer segments 121, so that during processing, when the reamer segments 121 are used for reaming, under the isolation of the separation grooves 122, no adverse effects will be generated between the adjacent reamer segments 121, thereby effectively improving the stability of the product.

[0027] Review Figure 1-Figure 2 Preferably, each chip removal groove 14 is spirally arranged along the outer wall of the body 1, and its spiral direction is consistent with the rotation direction of the body 1, so that it is helpful to discharge the chips generated during cutting, reduce cutting resistance, and improve cutting efficiency. In this example, there are two chip removal grooves 14, each chip removal groove 14 is formed by an inward depression on the surface of the body 1, and divides the reamer part 12 into two groups. The two groups of reamer parts 12 are also spirally arranged along the central axis of the body and alternate with the chip removal grooves 14.

[0028] See also Figure 4 , review Figure 1-Figure 2 , Figure 4 Schematic diagram of the connecting groove structure in the embodiment. Further, the body 1 also includes a plurality of injection holes 15, each of which is provided at both ends of the body 1, and the plurality of injection holes 15 are arranged circumferentially along the central axis of the body 1. When drilling and reaming, coolant can be injected into the hole through the injection holes 15 for cooling.

[0029] Specifically, each injection hole 15 is also arranged in a spiral direction along the central axis of the main body 1. In this example, there are two injection holes 15, and the two injection holes 15 and the two chip removal grooves 14 are arranged alternately in sequence, that is, each injection hole 15 passes through a group of reamer parts 12.

[0030] Furthermore, one end of the shank portion 11 facing away from the reamer portion 12 has a connecting groove 111, and the connecting groove 111 radially penetrates one end of the shank portion 11, and one end of the injection hole 15 is located in the connecting groove 111. In specific implementation, after the shank portion 11 is installed on the drilling machine, the shank portion 11 can be driven to rotate through the connecting groove 111, that is, the rotation of the main body 1 can be driven to ensure the stability of the rotation of the main body 1.

[0031] In this example, the shank portion 11 , the reamer portion 12 and the drill portion 13 are integrally formed of the same material.

[0032] In summary, in this example, by providing a plurality of reamer segments with different outer diameters on the reamer part, in actual drilling and reaming operations, reamer segments with different outer diameters can be used for reaming according to manufacturing requirements to form holes with different inner diameters. There is no need to frequently replace the tool, thereby improving the convenience of using the tool and at the same time improving production efficiency.

[0033] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A stepped drill reamer, characterized in that: include: A body (1), wherein the body (1) comprises a shank portion (11), a reamer portion (12) and a drill portion (13) in sequence along the length direction, the shank portion (11) and the drill portion (13) are respectively located at two ends of the body (1), the reamer portion (12) is located between the shank portion (11) and the drill portion (13), the reamer portion (12) comprises a plurality of reamer segments (121), and the outer diameters of the plurality of reamer segments (121) decrease in sequence from the shank portion (11) to the drill portion (13); The main body (1) further comprises a plurality of chip removal grooves (14), which are sequentially arranged along the circumferential direction on the outer wall of the main body (1). Each chip removal groove (14) is also arranged along the length direction of the main body (1), and its two ends are respectively connected to the shank portion (11) and the drill head portion (13).

2. The stepped drill reamer according to claim 1, characterized in that: The reamer portion (12) further comprises a plurality of separation grooves (122), and the plurality of separation grooves (122) and the plurality of reamer segments (121) are alternately arranged in sequence.

3. The stepped drill reamer according to claim 1, characterized in that: Each of the chip removal grooves (14) is arranged in a spiral manner along the circumferential direction of the outer wall of the body (1).

4. The stepped drill reamer according to claim 3, characterized in that: The body (1) further comprises a plurality of liquid injection through holes (15), each of the liquid injection through holes (15) being arranged through both ends of the body (1), and the plurality of liquid injection through holes (15) being arranged circumferentially along the central axis of the body (1).

5. The stepped drill reamer according to claim 4, characterized in that: Each of the injection holes (15) is also arranged in a spiral along the circumferential direction of the central axis of the body (1), and a plurality of the injection holes (15) and a plurality of the chip removal grooves (14) are arranged alternately in sequence.

6. The stepped drill reamer according to claim 4, characterized in that: A connecting groove (111) is provided at one end of the shank portion (11) facing away from the reamer portion (12). The connecting groove (111) is radially penetrated along one end of the shank portion (11), and one end of the liquid injection through hole (15) is located in the connecting groove (111).

7. The stepped drill reamer according to claim 1, characterized in that: The shank portion (11), the reamer portion (12) and the drill portion (13) are integrally formed from the same material.

8. The stepped drill reamer according to claim 2, characterized in that: The isolation groove (122) and the chip removal groove (14) are both formed by inward depression of the surface of the main body (1).

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