Four-tool-bit tool for turning drill bit chip groove

Abstract

The utility model relates to a turning drill bit chip groove four-tool-bit tool which not only can prolong the service life of the tool, but also can reduce the use cost of the tool, is good in use effect and convenient to install, and comprises a square tool body, and four corners of the tool body are respectively cut to form a tool bit. The included angle between two included angle edges of each tool bit ranges from 75 degrees to 85 degrees, a mounting hole is formed in the front face of the square tool body and penetrates through the front face and the back face of the tool body, and the distances from the hole center of the mounting hole to the four tool bits are the same. The mounting hole is composed of a first hole section and a second hole section which are communicated, the symmetrical center line of the first hole section coincides with the symmetrical center line of the second hole section, the diameter of the first hole section is larger than that of the second hole section, and an outer hole opening of the first hole section is located in the front face of the cutter body. An outer hole opening of the second hole section is located in the back face of the cutter body, and the thickness of the cutter body is larger than or equal to 4 mm. The turning drill bit chip groove four-tool-bit tool has the advantages that the service life of the tool can be prolonged, and the use cost of the tool can be reduced; and secondly, the turning drill chip groove four-tool-bit tool is not only good in using effect, but also convenient to install.

Description

Technical Field

[0001] The utility model belongs to the field of drill chip groove turning tool manufacturing, in particular to a four-cutter head tool for turning drill chip grooves. Background Art

[0002] The existing tools used by our company for turning drill chip grooves are as follows: Figure 4 As shown, it includes a tool body 1' and a cutter head 2' located at the front end of the tool body 1'. Since the existing tool for turning drill chip grooves has only one cutter head, the existing tool for turning drill chip grooves will be discarded after the cutter head is worn out. The service life of such existing tool for turning drill chip grooves is relatively low, thereby increasing the use cost of a four-cutter head tool for turning drill chip grooves. Utility Model Content

[0003] Design purpose: In order to avoid the shortcomings of the background technology, a turning drill bit chip groove four-head tool is designed which can not only increase the service life of the tool, but also reduce the cost of using the tool, and at the same time has good use effect and is easy to install.

[0004] Design plan: To achieve the above design objectives.

[0005] 1. The tool body is square and a cutter head is cut at each of the four corners of the tool body. The angle between the two angled sides of the cutter head is 75°-85°. A mounting hole is provided on the front of the square tool body and the mounting hole passes through the front and back sides of the tool body. The distances from the center of the mounting hole to the four cutter heads are the same. The mounting hole is composed of a first hole segment and a second hole segment that are connected, and the symmetry center line of the first hole segment coincides with the symmetry center line of the second hole segment. The diameter of the first hole segment is greater than the diameter of the second hole segment. The outer opening of the first hole segment is located on the front side of the tool body, and the outer opening of the second hole segment is located on the back side of the tool body. The design that the thickness of the tool body is greater than or equal to 4 mm is one of the technical features of the utility model. The purpose of such design is: the tool body is square and a cutter head is cut at each of the four corners of the tool body, the angle between the two angled sides in the cutter head is 75°-85°, a mounting hole is provided on the front of the square tool body and the mounting hole passes through the front and back sides of the tool body, and the distances from the center of the mounting hole to the four cutter heads are the same; the mounting hole is composed of a first hole segment and a second hole segment that are connected, and the symmetry center line of the first hole segment coincides with the symmetry center line of the second hole segment, the diameter of the first hole segment is larger than the diameter of the second hole segment, the outer opening of the first hole segment is located on the front side of the tool body, and the outer opening of the second hole segment is located on the back side of the tool body, and the thickness of the tool body is greater than or equal to 4mm; first, the tool body is square and the tool body A cutter head is cut at each of the four corners, that is, the setting of the four-sided cutter head greatly improves the service life of a turning drill bit chip groove four-cutter tool, thereby reducing the use cost of a turning drill bit chip groove four-cutter tool; second, the mounting hole is composed of a first hole segment and a second hole segment that are connected, and the symmetry center line of the first hole segment coincides with the symmetry center line of the second hole segment, the diameter of the first hole segment is larger than the diameter of the second hole segment, the outer hole opening of the first hole segment is located on the front side of the tool body, and the outer hole opening of the second hole segment is located on the reverse side of the tool body, which is convenient for the installation of a turning drill bit chip groove four-cutter tool and the tool holder; third, the thickness of the tool body is greater than or equal to 4mm, and the tool body of such thickness enables a turning drill bit chip groove four-cutter tool to have sufficient strength for use.

[0006] 2. The four sides of the tool body are cut to form inclined surfaces, and the square size of the front side of the tool body is larger than the square size of the back side of the tool body, which is the second technical feature of the utility model. The purpose of this design is that the four sides of the tool body are cut to form inclined surfaces, and the square size of the front side of the tool body is larger than the square size of the back side of the tool body. The four sides are all inclined surfaces. No matter which cutter head the user uses as a turning cutter head, the upper side of the tool body is guaranteed to be an inclined surface after the tool body is installed. In this way, when turning the drill bit chip groove, it is not easy to accumulate iron chips on the upper side of the tool body, thereby improving the use effect of a four-cutting head tool for turning the drill bit chip groove.

[0007] 3. The design that the bottom surface of the cutter head notch in the tool body is inclined surface 1 is the third technical feature of the utility model. The purpose of this design is that the bottom surface of the cutter head notch in the tool body is inclined surface 1, and the setting of inclined surface 1 makes it difficult for iron chips to accumulate at the cutter head notch when the tool body is turning the drill bit chip groove, thereby improving the use effect of a four-cutter head tool for turning the drill bit chip groove.

[0008] 4. The back side of the tool body is provided with four positioning grooves, and the four positioning grooves are equidistantly distributed in a circle, which is the fourth technical feature of the utility model. The purpose of this design is that the back side of the tool body is provided with four positioning grooves, and the four positioning grooves are equidistantly distributed in a circle. Since the four positioning cutter heads are used in rotation to turn the drill chip grooves, the four positioning grooves are set up. When the cutting cutter head needs to be adjusted, the convex block on the cutter head mounting frame is matched with the corresponding positioning groove, and the mounting hole is connected with the mounting screw hole on the cutter head mounting frame and fixed by screws, thereby realizing the rapid adjustment and installation of the tool body.

[0009] Technical solution: A four-cutter tool for turning drill bit chip grooves, including a tool body, the tool body is square and a tool head is cut and formed at each of the four corners of the tool body, the angle between the two angled sides in the tool head is 75°-85°, a mounting hole is provided on the front of the square tool body and the mounting hole passes through the front and back sides of the tool body, the distances from the center of the mounting hole to the four tool heads are the same; the mounting hole is composed of a first hole segment and a second hole segment that are connected and the symmetry center line of the first hole segment coincides with the symmetry center line of the second hole segment, the diameter of the first hole segment is larger than the diameter of the second hole segment, the outer opening of the first hole segment is located on the front side of the tool body, and the outer opening of the second hole segment is located on the back side of the tool body, and the thickness of the tool body is greater than or equal to 4mm.

[0010] Compared with the background technology, the utility model is a turning drill bit chip groove four-cutter tool which can not only improve the service life of the tool but also reduce the use cost of the tool; secondly, the turning drill bit chip groove four-cutter tool has not only good use effect but also easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention is a front view structural schematic diagram of a turning drill chip groove four-cutter tool.

[0012] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle.

[0013] Figure 3 yes Figure 1 Enlarged view of the circle B in the middle.

[0014] Figure 4 The utility model is an existing tool for turning the chip groove of a drill bit. DETAILED DESCRIPTION

[0015] Example 1: Refer to the attached Figure 1-Figure 3 A four-cutter tool for turning drill chip grooves, comprising a tool body 1, the tool body 1 is square and a cutter head 2 is cut and formed at each of the four corners of the tool body 1, the angle between the two angled edges 21 in the cutter head 2 is 75°-85°, a mounting hole 3 is provided on the front of the square tool body 1 and the mounting hole 3 passes through the front and back sides of the tool body 1, the distances from the center of the mounting hole 3 to the four cutter heads 2 are the same; the mounting hole 3 is composed of a first hole segment 31 and a second hole segment 32 that are connected, and the symmetry center line of the first hole segment 31 coincides with the symmetry center line of the second hole segment 32, the diameter of the first hole segment 31 is greater than the diameter of the second hole segment 32, the outer opening of the first hole segment 31 is located on the front side of the tool body 1, and the outer opening of the second hole segment 32 is located on the back side of the tool body 1, and the thickness of the tool body 1 is greater than or equal to 4mm. The tool body 1 is made of high-speed tool steel.

[0016] The four sides of the tool body 1 are cut to form an inclined surface 6, and the square size of the front side of the tool body is larger than the square size of the back side of the tool body. The angle between the two angled edges 21 in the tool head 2 is 80°. The sharp corners of the tool head 2 are rounded, and the diameter of the rounded corners is 1mm-1.5mm. The bottom surface of the tool head notch 4 in the tool body 1 is an inclined surface 41. Four positioning grooves 5 are provided on the back side of the tool body 1, and the four positioning grooves 5 are equidistantly distributed in a circle.

[0017] Preferably, the thickness of the square tool body 1 is 4 mm, the side length of the square on the front side of the tool body is 16 mm, the side length of the square on the back side of the tool body is 14.5 mm, the diameter of the first hole section 31 is 8 mm, and the diameter of the second hole section 32 is 6 mm.

[0018] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of the present utility model, these textual descriptions are only simple textual descriptions of the design concept of the present utility model, rather than limitations on the design concept of the present utility model. Any combination, addition or modification that does not exceed the design concept of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A turning drill bit chip removal four-cutter tool, comprising a tool body (1), Its characteristics are: The tool body (1) is square in shape and a tool head (2) is cut at each of the four corners of the tool body (1). The angle between the two angled edges (21) of the tool head (2) is 75°-85°. A mounting hole (3) is provided on the front side of the square tool body (1) and the mounting hole (3) passes through both the front and back sides of the tool body (1). The distances from the center of the mounting hole (3) to the four tool heads (2) are the same. The mounting hole (3) is composed of a first hole section (31) and a second hole section (32) which are connected to each other. The symmetry center line of the first hole section (31) coincides with the symmetry center line of the second hole section (32). The diameter of the first hole section (31) is greater than the diameter of the second hole section (32). The outer opening of the first hole section (31) is located on the front side of the tool body (1), and the outer opening of the second hole section (32) is located on the back side of the tool body (1). The thickness of the tool body (1) is greater than or equal to 4 mm.

2. A turning drill chip groove four-segment tool according to claim 1, Its characteristics are: The four side surfaces of the tool body (1) are all cut to form inclined surfaces (6), and the square size of the front side of the tool body is larger than the square size of the back side of the tool body.

3. A turning drill chip groove four-segment tool according to claim 1, Its characteristics are: The angle between the two angled edges (21) in the cutter head (2) is 80°.

4. A turning drill chip removal four-segment tool according to claim 1, Its characteristics are: The sharp corners of the blade head (2) are rounded, and the diameter of the rounded corners is 1 mm to 1.5 mm.

5. A turning drill chip removal four-segment tool according to claim 1, Its characteristics are: The bottom surface of the cutter head notch (4) in the cutter body (1) is an inclined surface 1 (41).

6. A turning drill chip groove four-segment tool according to claim 1, Its characteristics are: The back side of the tool body (1) is provided with four positioning grooves (5), and the four positioning grooves (5) are distributed equidistantly in a circle.

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