A milling cutter for PVD coating

Abstract

The utility model relates to milling cutter technical field, concretely is a kind of milling cutter for PVD coating, the milling cutter includes: cutter body, it is mainly used for processing part, the cutter body includes cutter bar, the cutter bar one end is provided with tool holder, the other end is provided with handle, the tool holder is provided with tool bit away from cutter bar one end, two inverted edges are symmetrically provided on the tool bit, guide surface one is provided between two inverted edges, and the side of two inverted edges away from tool holder is provided with inclined surface one, the side of two guide surface one away from tool holder is provided with inclined surface two, and cutting head is formed between inclined surface one and inclined surface two;Damping mechanism, it is mainly used for damping, the damping mechanism is sleeved on cutter body, and damping mechanism includes damping rubber, damping ring is provided in the damping rubber.The utility model has the advantages of simple structure, reasonable in design, and higher damping effect, and can also improve the precision of part processing, is worth popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, specifically a milling cutter for PVD coating. Background Technology

[0002] Milling cutters, whose cutting profile is designed according to the workpiece profile, like turning tools, can ensure the dimensional accuracy, shape consistency and high productivity of the machined workpiece. Milling cutters are widely used in production, especially in the machining of turbine blades. According to their tooth back shape, milling cutters can be divided into two types: pointed tooth milling cutters and shoveled tooth milling cutters. Milling cutters are often used for cutting mechanical parts. In order to improve the hardness of milling cutters, a PVD coating is applied to their surface.

[0003] Existing PVD-coated milling cutters have complex structures and unreasonable designs. They also vibrate during part machining, causing changes in the milling cutter's rotation radius and resulting in reduced machining accuracy. Utility Model Content

[0004] The purpose of this utility model is to provide a milling cutter for PVD coating, which has the advantages of simple structure, reasonable design, high vibration reduction effect, and improved part machining accuracy, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a milling cutter for PVD coating, comprising: a cutter body, which is mainly used for machining parts; the cutter body includes a cutter shank; a cutter holder is provided at one end of the cutter shank and a cutter handle is provided at the other end; a cutter head is provided at the end of the cutter holder away from the cutter shank; two chamfers are symmetrically arranged on the cutter head; a guide surface I is provided between the two chamfers; a beveled surface I is provided on the side of the two chamfers away from the cutter holder; a beveled surface II is provided on the side of the two guide surfaces I away from the cutter holder; and a cutting head is formed between the beveled surface I and the beveled surface II.

[0006] The vibration damping mechanism is mainly used for vibration reduction. The vibration damping mechanism is sleeved on the blade body and includes vibration damping rubber. The vibration damping rubber has a vibration damping ring inside, and the vibration damping ring is sleeved on the blade handle.

[0007] Preferably, the diameter of the tool holder is greater than the diameter of the tool shank, and the diameters of the tool head and the tool handle are both smaller than the diameter of the tool shank.

[0008] Preferably, the second guide surface is provided on the side of the first guide surface away from the second oblique cut surface. The second guide surface is arc-shaped and gradually moves towards the edge of the tool holder from the side closest to the first guide surface.

[0009] Preferably, the tool holder has six weight-reducing grooves arranged in a circular array along its axial direction. The six weight-reducing grooves are arranged at equal intervals around the axis of the tool holder, and the cross-section of each of the six weight-reducing grooves is a regular hexagon.

[0010] Preferably, the vibration damping rubber includes a nitrile rubber ring, and the nitrile rubber ring has a plurality of buffer holes inside, each of the buffer holes having an elliptical cross-section, the minor axis of which points to the central axis of the nitrile rubber ring.

[0011] Preferably, the outer edge of the damping ring is attached to the inner edge of the damping rubber, and a damping gap is provided between the inner edge of the damping ring and the outer edge of the tool holder, and the damping gap is filled with silicone oil.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model provides a milling cutter for PVD coating. The milling cutter includes a cutter body and a vibration damping mechanism. The overall structure is simple and reasonably designed. By setting a regular hexagonal weight-reducing groove inside the cutter holder, the weight of the cutter holder is reduced, the rotational inertia of the milling cutter is reduced, and the centrifugal force vibration generated by high-speed rotation is reduced. The vibration damping ring and vibration damping rubber are sleeved on the outside of the cutter holder. The silicone oil filled between the vibration damping ring and the cutter holder further enhances the vibration damping performance and stabilizes the cutting state. The vibration damping rubber absorbs vibration energy with its good elasticity and damping characteristics, which has a high vibration damping effect and improves the machining accuracy of the parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a bottom view of the structure of this utility model;

[0016] Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point A;

[0017] Figure 4 This utility model Figure 3 A schematic diagram of the transverse cross-sectional structure of the vibration damping rubber.

[0018] The reference numerals and names in the figure are as follows:

[0019] 1. Blade body; 11. Blade shank; 12. Blade holder; 13. Blade head; 131. Chamfer; 132. Guide surface one; 133. Beveled surface one; 134. Beveled surface two; 135. Cutting head; 136. Guide surface two; 14. Blade handle; 15. Weight reduction groove; 2. Vibration damping mechanism; 21. Vibration damping rubber; 211. Nitrile rubber ring; 212. Buffer hole; 22. Vibration damping ring; 23. Vibration damping gap. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] Please see Figures 1 to 4 One embodiment of this utility model provides: a milling cutter for PVD coating, comprising:

[0024] The blade 1, mainly used for machining parts, includes a shank 11. A tool holder 12 is located at one end of the shank 11, and a tool shank 14 is located at the other end. A cutting head 13 is located at the end of the tool holder 12 away from the shank 11. Two chamfers 131 are symmetrically arranged on the cutting head 13. A guide surface 132 is provided between each of the two chamfers 131. A beveled surface 133 is provided on the side of each of the two chamfers 131 away from the tool holder 12, and a beveled surface 134 is provided on the side of each of the two guide surfaces 132 away from the tool holder 12. A cutting surface is formed between the beveled surfaces 133 and 134. The diameter of the head 135 and the tool holder 12 is greater than the diameter of the tool shank 11. The diameters of the head 13 and the tool holder 14 are both smaller than the diameter of the tool shank 11. A second guide surface 136 is provided on the side of the first guide surface 132 away from the second oblique cutting surface 134. The second guide surface 136 is arc-shaped and gradually moves towards the edge of the tool holder 12 from the side close to the first guide surface 132. Six weight-reducing grooves 15 are provided inside the tool holder 14 along its axial direction. The six weight-reducing grooves 15 are arranged in a ring array at equal intervals around the axis of the tool holder 14, and the cross-section of each of the six weight-reducing grooves 15 is a regular hexagon.

[0025] In practice, the numerous inner walls of the regular hexagonal structure increase the number of reflections and refractions of vibration waves, causing vibration energy to be continuously lost inside, thus achieving a good vibration reduction effect.

[0026] The vibration damping mechanism 2 is mainly used for vibration damping. The vibration damping mechanism 2 is sleeved on the blade 1 and includes a vibration damping rubber 21. The vibration damping rubber 21 has a vibration damping ring 22 inside it. The vibration damping ring 22 is sleeved on the handle 14. The vibration damping rubber 21 includes a nitrile rubber ring 211. The nitrile rubber ring 211 has several buffer holes 212 inside it. The cross-section of each buffer hole 212 is elliptical. The minor axis of the ellipse points to the central axis of the nitrile rubber ring 211. The outer edge of the vibration damping ring 22 is in contact with the inner edge of the vibration damping rubber 21. A vibration damping gap 23 is provided between the inner edge of the vibration damping ring 22 and the outer edge of the handle 14. The vibration damping gap 23 is filled with silicone oil. In specific implementation, the vibration damping ring 22 can be made of tungsten alloy, but it is not limited to this. Users can adapt it according to specific circumstances.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A milling cutter for PVD coating, characterized in that, include: The blade (1) is mainly used for processing parts. The blade (1) includes a shank (11). One end of the shank (11) is provided with a shank holder (12) and the other end is provided with a shank handle (14). The end of the shank holder (12) away from the shank (11) is provided with a blade head (13). The blade head (13) is symmetrically provided with two chamfers (131). A guide surface (132) is provided between the two chamfers (131). A beveled surface (133) is provided on the side of the two chamfers (131) away from the shank (12). A beveled surface (134) is provided on the side of the two guide surfaces (132) away from the shank (12). A cutting head (135) is formed between the beveled surface (133) and the beveled surface (134). The vibration damping mechanism (2) is mainly used for vibration damping. The vibration damping mechanism (2) is sleeved on the blade (1), and the vibration damping mechanism (2) includes a vibration damping rubber (21). The vibration damping rubber (21) has a vibration damping ring (22) inside, and the vibration damping ring (22) is sleeved on the handle (14).

2. The milling cutter for PVD coating according to claim 1, characterized in that: The diameter of the tool holder (12) is greater than the diameter of the tool shank (11), while the diameters of the tool head (13) and the tool handle (14) are both smaller than the diameter of the tool shank (11).

3. The milling cutter for PVD coating according to claim 2, characterized in that: The first guide surface (132) is provided with a second guide surface (136) on the side away from the second oblique cut surface (134). The second guide surface (136) is arc-shaped and gradually moves towards the edge of the cutter holder (12) from the side close to the first guide surface (132).

4. The milling cutter for PVD coating according to claim 1, characterized in that: The tool holder (14) has six weight-reducing grooves (15) arranged along its axial direction inside. The six weight-reducing grooves (15) are arranged in a ring array at equal intervals around the axis of the tool holder (14), and the cross-section of each of the six weight-reducing grooves (15) is a regular hexagon.

5. A milling cutter for PVD coating according to claim 1, characterized in that: The vibration damping rubber (21) includes a nitrile rubber ring (211), and the nitrile rubber ring (211) has a plurality of buffer holes (212) inside. The cross-section of each buffer hole (212) is elliptical, and the minor axis of the ellipse points to the central axis of the nitrile rubber ring (211).

6. A milling cutter for PVD coating according to claim 1, characterized in that: The outer edge of the damping ring (22) is attached to the inner edge of the damping rubber (21), and a damping gap (23) is provided between the inner edge of the damping ring (22) and the outer edge of the handle (14), and silicone oil is filled in the damping gap (23).

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