Deep hole reaming blade structure for numerical control machine tool

Abstract

The utility model discloses a deep hole broaching blade structure for a numerical control machine tool, which comprises an alloy cutter body, the alloy cutter body is block-shaped, the lower parts of the four side surfaces of the alloy cutter body are inclined inwards, the left side and the right side of the upper end surface of the alloy cutter body are stepped grooves, the outer edges of the stepped grooves are cutter edges, and a fixed through hole is formed in the central position of the alloy cutter body. The thickness of the alloy cutter body is 7.5 mm and is increased by 1 mm compared with 6.5 mm of a common cutter body, an opening in the upper portion of the fixing through hole is an expansion opening, the angle of the expansion opening is matched with the nut part of the fixing bolt, material breaking grooves are formed in the left side and the right side of the upper end face of the alloy cutter body and comprise the square material breaking groove and the Y-shaped material breaking groove, and the angle of the square material breaking groove is larger than that of the Y-shaped material breaking groove. The square material breaking grooves and the Y-shaped material breaking grooves are evenly arranged, and the positions of the square material breaking grooves and the Y-shaped material breaking grooves are staggered. The rotating speed can be increased during machining, so that the machining efficiency is improved; and secondly, the material breaking groove is formed in the inner side of the knife edge, and waste materials are broken off in time during machining.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing equipment, in particular to a deep hole enlarging blade structure for a numerically controlled machine tool. Background Art

[0002] In mechanical processing, when the processing hole diameter is large, it is often necessary to use a reaming cutter head for secondary processing. The reaming blade is an important component of the reaming cutter head, and its performance affects the processing efficiency and product quality. The existing reaming blade is relatively low in thickness, which makes the reaming cutter head insufficient in strength, resulting in low processing efficiency and easy damage. At the same time, the mounting bolts of the reaming cutter head often break during use. In addition, the existing reaming cutter head can often only process and reame a certain material, and its function is relatively single. Summary of the Invention

[0003] The purpose of the utility model is to provide a deep hole enlarging blade structure for a CNC machine tool, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a deep hole reaming blade structure for CNC machine tools, comprising an alloy blade body, the alloy blade body being block-shaped, the lower parts of the four side surfaces of the alloy blade body being inclined inward, the left and right sides of the upper end surface of the alloy blade body being stepped grooves, and the outer edges of the stepped grooves being cutting edges, a fixed through hole being opened in the center of the alloy blade body, and the thickness of the alloy blade body being 7.5 mm, which is 1 mm thicker than the 6.5 mm thickness of an ordinary blade body.

[0005] Furthermore, the upper opening of the fixing through hole is an expansion opening, and the angle of the expansion opening matches the nut portion of the fixing bolt.

[0006] Furthermore, cutting grooves are provided on the left and right sides of the upper end surface of the alloy cutter body.

[0007] Furthermore, the cutting trough includes a square cutting trough and a Y-shaped cutting trough, and the square cutting trough and the Y-shaped cutting trough are evenly arranged, and the positions of the square cutting trough and the Y-shaped cutting trough are staggered.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the deep hole reaming blade structure for CNC machine tools of the present invention is improved on the basis of the structure of the existing reaming blade. First, the thickness of the alloy blade body is increased from the original 6.5mm to 7.5mm. The increase in the thickness of the blade body increases its strength accordingly. At the same time, the opening of the upper opening in the fixed through hole is improved from the original straight opening to an expanded opening, and the angle of the expanded opening matches the nut part of the fixing bolt, which increases the force contact surface between the fixing bolt and the blade body. On the one hand, it further increases the strength, and on the other hand, it also reduces the situation of bolt breakage, and the rotation speed can be increased during processing, thereby increasing processing efficiency; secondly, a cutting groove is set on the inner side of the blade edge. The cutting groove can meet the processing of waste materials with larger lengths, and the waste can be broken in time during processing to ensure normal processing. The combination of the square cutting groove and the Y-shaped cutting groove can improve the breaking effect.

[0009] The utility model has the advantages of simple structure, safety, effectiveness and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram of Example 1 of the utility model;

[0011] Figure 2 This is a structural diagram of Example 2 of the utility model;

[0012] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 4 This is a schematic diagram of the top view of the structure of the utility model;

[0014] In the figure: 1-alloy cutter body; 10-fixing through hole; 2-cutting groove; 21-square cutting groove; 22-Y-shaped cutting groove. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Example 1, please refer to Figure 1 、 34. The utility model provides a deep hole reaming blade structure for CNC machine tools, comprising an alloy blade body 1. The alloy blade body 1 is block-shaped, and the lower parts of the four side surfaces of the alloy blade body 1 are inclined inward. The left and right sides of the upper end surface of the alloy blade body 1 are stepped grooves, and the outer edge of the stepped groove is a blade edge. A fixed through hole 10 is opened at the center of the alloy blade body 1. The thickness of the alloy blade body 1 is 7.5 mm, which is 1 mm thicker than the 6.5 mm thickness of an ordinary blade body.

[0017] Furthermore, the upper opening of the fixing through hole 10 is an expansion opening, and the angle of the expansion opening matches the nut portion of the fixing bolt. A more common expansion opening angle is 6°.

[0018] Example 2, please refer to Figure 2 、 3 4. The utility model provides a deep hole reaming blade structure for CNC machine tools, comprising an alloy blade body 1. The alloy blade body 1 is block-shaped, and the lower parts of the four side surfaces of the alloy blade body 1 are inclined inward. The left and right sides of the upper end surface of the alloy blade body 1 are stepped grooves, and the outer edge of the stepped groove is a blade edge. A fixed through hole 10 is opened at the center of the alloy blade body 1. The thickness of the alloy blade body 1 is 7.5 mm, which is 1 mm thicker than the 6.5 mm thickness of an ordinary blade body.

[0019] Furthermore, the upper opening of the fixing through hole 10 is an expansion opening, and the angle of the expansion opening matches the nut portion of the fixing bolt.

[0020] Furthermore, cutting grooves 2 are provided on the left and right sides of the upper end surface of the alloy blade body 1 .

[0021] Furthermore, the cutting groove 2 includes a square cutting groove 21 and a Y-shaped cutting groove 22. The square cutting groove 21 and the Y-shaped cutting groove 22 are evenly arranged, and the positions of the square cutting groove 21 and the Y-shaped cutting groove 22 are staggered.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep hole enlarging blade structure for a CNC machine tool, characterized in that: The invention comprises an alloy blade body (1), wherein the alloy blade body (1) is block-shaped, the lower parts of the four side surfaces of the alloy blade body (1) are inclined inwards, the left and right sides of the upper end surface of the alloy blade body (1) are stepped grooves, and the outer edges of the stepped grooves are blade edges, a fixed through hole (10) is provided at the center of the alloy blade body (1), and the thickness of the alloy blade body (1) is 7.5 mm, which is 1 mm thicker than the 6.5 mm thickness of an ordinary blade body.

2. A deep hole reaming blade structure for a CNC machine tool according to claim 1, characterized in that: The upper opening of the fixing through hole (10) is an expansion opening, and the angle of the expansion opening matches the nut portion of the fixing bolt.

3. The deep hole enlarging blade structure for a CNC machine tool according to claim 1, characterized in that: The alloy blade body (1) has cutting grooves (2) on the left and right sides of the upper end surface.

4. The deep hole enlarging blade structure for a CNC machine tool according to claim 3, characterized in that: The cutting groove (2) comprises a square cutting groove (21) and a Y-shaped cutting groove (22), the square cutting groove (21) and the Y-shaped cutting groove (22) are evenly arranged, and the positions of the square cutting groove (21) and the Y-shaped cutting groove (22) are staggered.

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