Wear-resistant trepanning cutter

Abstract

The utility model belongs to the technical field of cutters, and particularly relates to a wear-resistant trepanning cutter which comprises a cutter head and a cutter handle, a fixing piece is installed on the cutter head, a guide disc is installed on the fixing piece, a cutting body is installed on the guide disc and comprises a rod body and four cutter points, a plurality of discharging grooves are formed in the outer wall of the guide disc, and the cutter handle is installed on the rod body. The tip parts of the four tool noses drill into a contacted object at the same time and can expand inwards to drill holes, when the contacted object is firm, due to the fact that the four tool noses are installed, force can be better applied to the contacted object, chippings generated in the process that the tool noses drill the contacted object enter the annular groove body through the discharging groove and are discharged out of the discharging groove, and the chippings are discharged out of the discharging groove. When the tool nose rotates in a contacted object, chippings can enter the annular groove body through the discharging groove and then are discharged from the discharging groove around the spiral groove. Compared with the prior art, drilling is facilitated, and chippings can be discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, and more specifically, to a wear-resistant hole-opening tool. Background Art

[0002] Cutting tools are tools used for cutting in machining. A hole-opening tool is a method of hole machining in machining, which is to machine a hole in a solid workpiece, that is, to machine a hole from the solid.

[0003] For example, the drilling tool with the application publication number CN104275514A includes a tool bit and a tool handle. The tool bit is fixedly connected to the tool handle. A tapered head is provided at the end of the tool bit. Spiral cutting edges for drilling and a reamer for reaming and hole finishing are respectively provided on the surfaces at both ends of the tool bit. A tool handle sleeve is sleeved on the tool handle. The tool handle sleeve and the tool handle are also connected by a key. The key is used for radially positioning the tool handle sleeve. A key groove is provided on the tool handle. A key adapted to the key groove is provided on the inner wall of the tool handle sleeve. The tool handle sleeve and the tool handle are connected and fixed by a fixing member. The fixing member is used for axially positioning the tool handle sleeve. The fixing member is provided at the end of the tool handle. An oil passage for lubricating the tool bit is provided on the tool handle sleeve.

[0004] In the above, the tapered head drills into the contacted object, and the spiral cutting edge is rotated to drill the contacted object. Since the tapered head is arranged in the middle of the spiral cutting edge, when the tapered head drills into the contacted object, the spiral cutting edge rotates around the tapered head as the center point to open a hole in the contacted object. When the contacted object is relatively firm, it is difficult for the spiral cutting edge to expand and drill outward only through one tapered head. Debris will be generated during the process of the spiral cutting edge drilling the contacted object, and there is no channel for discharging the debris in this patent. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a wear-resistant hole-opening tool that is convenient for drilling and can discharge debris.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A wear-resistant hole-opening tool includes a tool bit and a tool handle. The tool bit and the tool handle are fixedly connected. A fixing member is provided on the tool bit. A guiding disk is provided on the fixing member. A cutting body is provided on the guiding disk. The cutting body is connected to the outer wall of the guiding disk. The cutting body includes a rod body and a tool tip connected to the rod body.

[0008] There are four tool tips and the tips of the tool tips are located outside the cutting body. A plurality of material discharge grooves are formed on the outer wall of the guiding disk. The material discharge grooves are arranged in pairs on both sides of the rod body.

[0009] The present utility model is further arranged as follows: An annular groove and a discharge groove are formed on the outer wall of the fixing member. The annular groove is located between the material discharge groove and the discharge groove. The annular groove is communicated with both the material discharge groove and the discharge groove.

[0010] The present utility model is further configured such that a spiral groove is provided between the annular groove body and the groove.

[0011] The present utility model is further configured such that the guiding disk is provided with a placing hole, and the rod body is placed in the placing hole and connected to the placing hole.

[0012] By adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0013] When drilling the object to be contacted, the tips of the four cutting edges simultaneously drill into the object to be contacted, and can expand the drilled hole inward. When the object to be contacted is relatively firm, due to the installation of four cutting edges, better force can be applied to the object to be contacted, thereby facilitating drilling. The debris generated during the process of the cutting edges drilling the object to be contacted first enters the annular groove body through the discharge groove and is discharged from the unloading groove. When the cutting edges rotate in the object to be contacted, the debris will enter the annular groove body through the discharge groove, then discharge from the unloading groove around the spiral groove, and thus the debris can be discharged. Description of the Drawings

[0014] Figure 1 is a perspective view of an embodiment of the present utility model;

[0015] Figure 2 is a structural schematic diagram of an embodiment of the present utility model.

[0016] Cutting head 1, tool shank 2, fixing member 3, guiding disk 4, cutting body 5, rod body 6, cutting edge 7, discharge groove 8, annular groove body 9, unloading groove 10, spiral groove 11. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0019] Such as Figures 1 to 2As shown in the figure, the wear-resistant open-hole cutting tool includes a cutting head 1 and a tool handle 2. The cutting head 1 and the tool handle 2 are fixedly connected. A fixing member 3 is installed on the cutting head 1, and a guiding disc 4 is installed on the fixing member 3. A storage hole is formed on the outer wall of the guiding disc 4, and a cutting body 5 is installed on the storage hole.

[0020] The cutting body 5 includes a rod body 6 and a cutting tip 7 connected to the rod body 6. The rod body 6 is placed in the storage hole and fixed to the storage hole. There are four cutting tips 7, and the tips of the cutting tips 7 are placed outside the cutting body 5. The tips of the cutting tips 7 outside the cutting body 5 are used to open holes in the contacted object.

[0021] A plurality of discharge grooves 8 are formed on the outer wall of the guiding disc 4. The discharge grooves 8 are arranged on both sides of the rod body 6 in pairs. An annular groove 9 and a discharge groove 10 are formed on the outer wall of the fixing member 3. The annular groove 9 is arranged between the discharge groove 8 and the discharge groove 10, and the annular groove 9 is communicated with both the discharge groove 8 and the discharge groove 10.

[0022] A spiral groove 11 is formed between the annular groove 9 and the groove. A path for discharging debris is formed through the discharge groove 8, the annular groove 9, the spiral groove 11, and the discharge groove 10.

[0023] Working principle: When drilling a hole in the contacted object, the tips of the four cutting tips 7 penetrate into the contacted object simultaneously, and the hole can be expanded inward. When the contacted object is relatively firm, due to the installation of four cutting tips 7, better force can be applied to the contacted object, thus facilitating drilling. The debris generated during the process of the cutting tip 7 drilling the contacted object first enters the annular groove 9 through the discharge groove 8 and is discharged from the discharge groove 10. When the cutting tip 7 rotates in the contacted object, the debris will enter the annular groove 9 through the discharge groove 8, and then be discharged from the discharge groove 10 around the spiral groove 11, so as to discharge the debris.

[0024] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A wear-resistant open-hole cutting tool, comprising a cutting head (1) and a tool shank (2), the cutting head (1) and the tool shank (2) being fixedly connected, characterized in that, The cutter head (1) is provided with a fixing member (3). The fixing member (3) is provided with a guiding disc (4). The guiding disc (4) is provided with a cutting body (5), and the cutting body (5) is connected to the outer wall of the guiding disc (4). The cutting body (5) includes a rod body (6) and a cutter tip (7) connected to the rod body (6). There are four cutter tips (7), and the tips of the cutter tips (7) are located outside the cutting body (5). A plurality of discharge grooves (8) are formed in the outer wall of the guiding disc (4). The discharge grooves (8) are arranged in pairs on both sides of the rod body (6).

2. The wear-resistant hole-opening tool according to claim 1, characterized in that, An annular groove body (9) and a discharge chute (10) are formed in the outer wall of the fixing member (3). The annular groove body (9) is located between the discharge groove (8) and the discharge chute (10), and the annular groove body (9) is communicated with both the discharge groove (8) and the discharge chute (10).

3. A wear-resistant hole-opening tool according to claim 2, characterized in that, A spiral groove (11) is formed between the annular groove body (9) and the groove.

4. A wear-resistant hole-opening tool according to claim 1, wherein, A placement hole is formed in the guiding disc (4), and the rod body (6) is placed in the placement hole and connected to the placement hole.

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