A special-shaped unequally divided six-blade reamer

Abstract

The utility model discloses a special-shaped unequally divided six-blade reamer, comprising a cutter head, wherein the cutter head is sequentially provided with a first blade, a second blade, a third blade, a fourth blade, a fifth blade and a sixth blade along the cutting edge; the first blade and the fourth blade are symmetrically arranged, and the first blade and the fourth blade symmetrically form a 180-degree plane; the second blade, the third blade, the fifth blade and the sixth blade are all staggered with the symmetrically arranged first blade and the fourth blade; in the utility model, only the first blade and the fourth blade symmetrically form a 180-degree plane, so that the outer diameter size can be conveniently measured, measurement errors are not easily caused, and the stability of the small tolerance reamer can be facilitated; when there is a tool abnormality, the cause of the outer diameter production in the early stage can be quickly ruled out; the other blades are staggered with the symmetrical first blade and the fourth blade to prevent resonance, and the processing can form a high-gloss surface effect, and the processing aperture is also relatively stable.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a special-shaped unequally divided six-blade reamer. Background Art

[0002] In the traditional machining field, when the hole diameter tolerance is less than 0.005mm and the hole wall finish is required to be less than Ra0.5, reamer and PCD tool are generally used to complete the process. Reamers are divided into different numbers of teeth according to the hole diameter size.

[0003] Reamers are divided into equal and unequal parts. Since the reamer will produce periodic marks when reaming, it will also form resonance, which will affect the hole diameter and hole wall finish of the product. When the hole diameter tolerance is less than 0.005mm and the hole wall finish is required to be less than Ra0.5, most reamers will use unequal grooves. The standard six-blade unequal reamer has two symmetrical blades. During processing, there are three pairs of symmetrical points that contact the workpiece at the same time. Resonance will still be formed during processing, resulting in large holes and excessive hole wall finish.

[0004] In order to solve the above problems, the present application proposes a special-shaped unequally divided six-blade reamer. Utility Model Content

[0005] The utility model aims to provide a special-shaped unequally divided six-blade reamer to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a special-shaped unequally divided six-blade reamer, comprising a cutter head, wherein the cutter head is provided with a first blade, a second blade, a third blade, a fourth blade, a fifth blade and a sixth blade in sequence along the cutting edge;

[0007] The first blade and the fourth blade are symmetrically arranged, and the first blade and the fourth blade symmetrically form a 180° plane;

[0008] The second blade, the third blade, the fifth blade and the sixth blade are all staggered with respect to the symmetrically arranged first blade and the fourth blade.

[0009] Among them, the edge angle of the first blade is 52°; the edge angle of the second blade is 60°; the edge angle of the third blade is 68°; the edge angle of the fourth blade is 68°; the edge angle of the fifth blade is 52°; and the edge angle of the sixth blade is 60°.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] In the utility model, only the first blade and the fourth blade form a 180° plane symmetrically, which can conveniently measure the outer diameter size, is not easy to cause measurement errors, and is beneficial to the stability of the small tolerance reamer; when there is a tool abnormality, it can quickly rule out that it is caused by the early outer diameter production; the other blades are staggered with the symmetrical first blade and the fourth blade to prevent resonance, the processing can form a high-gloss surface effect, and the processing aperture is also relatively stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0013] In the figure: 1, first blade; 2, second blade; 3, third blade; 4, fourth blade; 5, fifth blade; 6, sixth blade. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0015] See also Figure 1 The utility model provides a technical solution: a special-shaped unequally divided six-blade reamer, including a cutter head, wherein the cutter head is provided with a first blade 1, a second blade 2, a third blade 3, a fourth blade 4, a fifth blade 5 and a sixth blade 6 in sequence along the cutting edge; the first blade 1 and the fourth blade 4 are symmetrically arranged, and the first blade 1 and the fourth blade 4 symmetrically form a 180° plane; only the first blade 1 and the fourth blade 4 symmetrically form a 180° plane, which can conveniently measure the outer diameter size, is not easy to cause measurement errors, and is beneficial to the stability of the small tolerance reamer.

[0016] Among them, the second blade 2, the third blade 3, the fifth blade 5 and the sixth blade 6 are staggered with the symmetrically arranged first blade 1 and the fourth blade 4, and the other blades are staggered with the symmetrical first blade 1 and the fourth blade 4 to prevent resonance. The processing can form a high-gloss surface effect and the processing aperture is relatively stable.

[0017] Among them, the edge angle of the first blade 1 is 52°; the edge angle of the second blade 2 is 60°; the edge angle of the third blade 3 is 68°; the edge angle of the fourth blade 4 is 68°; the edge angle of the fifth blade 5 is 52°; the edge angle of the sixth blade 6 is 60°. The 6 blades of the reamer are arranged with unequal groove angles to avoid periodic marks when the reamer is reaming, prevent resonance, and improve the hole diameter and hole wall smoothness of the product.

[0018] Working principle: When in use, the blades of the reamer are divided into the first blade 1, the second blade 2, the third blade 3, the fourth blade 4, the fifth blade 5 and the sixth blade 6, and the 6 blades have unequal groove angles. Only the first blade 1 and the fourth blade symmetrically form a 180° plane, which can conveniently measure the outer diameter size and is not prone to measurement errors, which is beneficial to the stability of small tolerance reamer; when there is a tool abnormality, it can quickly rule out that it is the cause of the early outer diameter production; the other blades are staggered with the symmetrical first blade 1 and the fourth blade 4 to prevent resonance, and the processing can form a high-gloss surface effect, and the processing aperture is also relatively stable.

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A special-shaped unequally divided six-blade reamer, including a cutter head, characterized in that: The blade head is provided with a first blade (1), a second blade (2), a third blade (3), a fourth blade (4), a fifth blade (5) and a sixth blade (6) in sequence along the blade edge; The first blade (1) and the fourth blade (4) are symmetrically arranged, and the first blade (1) and the fourth blade (4) symmetrically form a 180° plane; The second blade (2), the third blade (3), the fifth blade (5) and the sixth blade (6) are all staggered with respect to the symmetrically arranged first blade (1) and the fourth blade (4).

2. The special-shaped unequally divided six-blade reamer according to claim 1, characterized in that: The cutting edge angle of the first blade (1) is 52°; the cutting edge angle of the second blade (2) is 60°; the cutting edge angle of the third blade (3) is 68°; the cutting edge angle of the fourth blade (4) is 68°; the cutting edge angle of the fifth blade (5) is 52°; and the cutting edge angle of the sixth blade (6) is 60°.

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