A balancing nut

Abstract

The present invention relates to the technical field of fasteners, and particularly to a balancing nut. The nut has a hexagonal or cylindrical symmetric balanced structure; the inner hole of the nut has an oval-shaped oblong hole, and a clamping groove that catches the outer wall of the collet for one week is provided on both sides of the short axis of the oblong hole; there is a groove on one side of the short axis of the oblong hole for weight reduction and balancing, so that the overall weight of the balancing nut is evenly distributed along the circumference; there is a small groove on the lower bottom surface of the nut as an installation mark to achieve good assembly and disassembly. The present invention discloses a balancing nut, whose good dynamic balance can ensure the stability of the machine tool spindle and the cutting tool during high-speed rotation, and thus can guarantee the machining accuracy and surface roughness; after machining, there is no need to remove materials and correct the balance on the surface, and the overall weight is directly ensured to be evenly distributed on the circumference from the structure; the collet is easy to deform, and the installation and disassembly are easy and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of fasteners, and more specifically, to a balancing nut. Background Art

[0002] As is well known, machining centers are increasingly used in the current field of machining. When using a machining center, cutting tools are required, and a tool holder nut is used to connect the tool and the tool holder. However, with the rapid development of high-speed and high-precision machining, the eccentric structure of traditional tool holder nuts can no longer meet the usage requirements.

[0003] Traditional tool holder nuts have problems in structure, appearance, and installation. In severe cases, they can cause vibrations in the machine tool spindle and the tool system, resulting in wear of the machine tool and causing destructive accidents. There is an imbalance in the structural design. During high-speed cutting machining, it is easy to cause chatter of the tool holder head, which in turn affects the accuracy and surface roughness of the workpiece being machined. After machining, it is necessary to drill holes on the surface to remove materials to correct the dynamic balance, which affects the appearance. When installing and disassembling, the collet is not easily deformed, resulting in difficult installation and disassembly and reduced efficiency. Summary of the Invention

[0004] In order to overcome the deficiencies in the background art, the present invention discloses a balancing nut. Its good dynamic balance can ensure the stability of the machine tool spindle and the cutting tool during high-speed rotation, and thus can guarantee the machining accuracy and surface roughness. After machining, there is no need to remove materials and correct the balance on the surface, and the overall weight is directly ensured to be evenly distributed on the circumference in terms of structure. The collet is easily deformed, and the installation and disassembly are easy and efficient.

[0005] To achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0006] A balancing nut, the outer shape of the balancing nut is a hexagonal or cylindrical symmetric balance structure; the inner hole of the nut has an oblong hole with an eccentric circle structure, and a clamping groove that catches the outer wall of the collet for one week on both sides of the short axis of the oblong hole; there is a groove on one side of the short axis of the oblong hole for weight reduction and balance matching, so that the overall weight of the balancing nut is evenly distributed along the circumference; there is a small groove on the lower bottom surface of the nut as an installation mark to achieve good assembly and disassembly.

[0007] The small groove can also be replaced by a hole or a notch, which is in a regular or irregular shape, and the number ranges from one to multiple, and is located on the same side as the groove.

[0008] The groove can also be replaced by a hole or a notch, which is in a regular or irregular shape, and the number ranges from one to multiple.

[0009] The balancing nut described in the present invention is applicable but not limited to ER nuts, small-diameter nuts, and external thread nuts. Brief Description of the Drawings

[0010] Figure 1 It is a three-dimensional diagram of the balance nut;

[0011] Figure 2 This is the nut outline diagram of the balance nut;

[0012] Figure 3 It is a top view of the balance nut;

[0013] Figure 4 This is a bottom view of the balance nut;

[0014] Figure 5 It is a cross-sectional view of the balance nut;

[0015] Figure 6 It is the assembly cross-sectional view of the balance nut.

[0016] Figure: 1. Balance nut; 2. Oblong hole; 3. Groove; 4. Small slot; 5. Collet DETAILED DESCRIPTION

[0017] In conjunction with the accompanying drawings, the technical solution of the present invention is further described: the balancing nut mainly uses the grooves on both sides of the short axis of the oblong hole in the eccentric circle structure of the nut to clamp the outer wall of the collet.

[0018] A balancing nut, the balancing nut 1 has a hexagonal or cylindrical symmetrical balancing structure, and the shape can refer to but is not limited to Figure 2 ; The inner hole of the nut has an oblong hole 2 with an eccentric circular structure, and the outer wall of the collet 5 is clamped with grooves on both sides of the short axis of the oblong hole 2; one side of the short axis of the oblong hole 2 has a groove 3, which is used for weight reduction and balancing, so that the overall weight of the balance nut is evenly distributed along the circumference; there is a small groove 4 on the bottom surface of the nut as an installation mark to achieve good assembly and disassembly.

[0019] The assembly method is to first insert the collet toward the groove side, then push the collet in and insert it into the balance nut; the disassembly method is to open the collet toward the small groove side; see the attached Figure 1 and attached Figure 6 .

[0020] The small groove 4 can also be replaced by a hole or a notch, which can be of regular or irregular shape, and the number can be from one to multiple, and is located on the same side as the groove 3 .

[0021] The groove 3 can also be replaced by a hole or a notch, which can be of regular or irregular shape and the number can be from one to multiple.

[0022] The balancing nut described in the present invention is applicable to but not limited to ER nuts, small-diameter nuts, and externally threaded nuts.

Claims

1. A balancing nut, characterized in that: The balance nut (1) has a hexagonal or cylindrical symmetric balance structure; the inner hole of the balance nut (1) has an oblong hole (2) with an eccentric circle structure, and the outer wall of the collet (5) is clamped around the short axis of the oblong hole (2); there is a groove (3) on one side of the short axis of the oblong hole (2) for weight reduction and balancing, so that the overall weight of the balance nut is evenly distributed along the circumference; there is a small groove (4) on the lower bottom surface of the nut as an installation mark for assembly and disassembly.

2. The balance nut according to claim 1, characterized in that: The small groove (4) can also be replaced by a hole or a notch, which is in a regular or irregular shape, and the number ranges from one to multiple, and is located on the same side as the groove (3).

3. The balance nut according to claim 1, characterized in that: The groove (3) can also be replaced by a hole or a notch, which is in a regular or irregular shape, and the number ranges from one to multiple.

4. The balance nut according to claim 1, characterized in that: The balance nut (1) can be applicable to but not limited to ER nuts, small-diameter nuts and external thread nuts.

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