Dynamic milling cutter for part machining

Abstract

The utility model is applicable to the technical field of part processing, and provides a dynamic milling cutter for part processing, which comprises a cutter handle assembly and a cutting edge assembly, the cutting edge assembly comprises a cutter head, the cutter head is connected with one end of the cutter handle assembly, and the cutting edge assembly further comprises four groups of arc cutting edge teeth, the side faces of the four sets of arc blade teeth are provided with normal arc blades, the normal arc blades are in an arc shape, the ends, away from the cutter handle assembly, of the arc blade teeth are provided with bottom blades, and the bottom blades are in a quadrilateral shape. The device can reduce the single-blade feed amount of the milling cutter, does not generate obvious vibration and noise, can also reduce friction between the milling cutter and parts, reduces heat generation between the parts and the milling cutter, can also perform proper passivation treatment on the end face of the bottom blade, relieves the pressure of the parts on the cutter, and improves the service life of the cutter. The problems of cutter breakage, cutter deformation of the milling cutter and the like in the cutting process of the milling cutter are solved, and the machining quality, precision and size of parts are better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing, and more specifically, it relates to a dynamic milling cutter for parts processing. Background Technique

[0002] Dynamic milling is a machining method that realizes the milling of parts by changing the tool path and the movement path, and is often used for the machining of complex curved surfaces and spiral grooves, etc. Dynamic milling has advantages such as high precision and high machining efficiency.

[0003] At present, the milling cutters on the market include a tool tip and a tool shank. The tool tip is provided with cutting edges, and the cutting edges are distributed on the cutting end face. When the tool works, the workpiece is cut into by the cutting edges of the milling cutter, and then the main body of the milling cutter is gradually advanced to operate on the workpiece, gradually expanding the operation range until the main body of the milling cutter enters, and the machining of the workpiece can be completed.

[0004] However, during the parts processing by the milling cutter, every time the milling cutter blade enters the cutting, the cutting edge has to bear the impact load, which affects the milling cutter, causes the vibration and deformation of the milling cutter, leads to the damage of the milling cutter, reduces the service life of the tool, and affects the cutting efficiency. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a dynamic milling cutter for parts processing.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A dynamic milling cutter for parts processing, including a tool shank assembly and a cutting edge assembly. The cutting edge assembly includes a tool tip, and the tool tip is connected to one end of the tool shank assembly.

[0007] Among them, the cutting edge assembly further includes arc edge teeth. There are four groups of arc edge teeth. The side surfaces of the four groups of arc edge teeth are all provided with normal arc edges. The shape of the normal arc edge is arc-shaped. One end of the arc edge tooth away from the tool shank assembly has a bottom edge, and the shape of the bottom edge is quadrilateral.

[0008] The utility model is further set as follows: The total length of the cutting edge assembly and the tool shank assembly is E, and the length range of E is between 74.7 mm and 75.3 mm. The tool shank assembly includes a shank portion. The shank portion is a cylinder. One end of the shank portion away from the cutting edge assembly has a tapered portion, and the diameter length of the tapered portion is F, and the length of F is 12 mm.

[0009] By adopting the above technical solution, the specific structures of the milling cutter cutting edge assembly are set, and the size length of the milling cutter is determined. A tapered portion is provided at the tail end of the milling cutter shank, which is convenient for the installation of the milling cutter and meets the requirements of parts processing.

[0010] The present utility model is further configured as follows: The length of the arc-edge tooth is C, and the length range of C is between 32.15 mm and 32.10 mm. The outer diameter of the tool head is B, and the length range of B is between 11.997 mm and 11.980 mm. An inter-tooth angle is formed between every two groups of the arc-edge teeth, and the inter-tooth angle is M. The angle range of M is between 85° and 95°. A spiral groove is formed between two adjacent arc-edge teeth, and the groove depth of the spiral groove is J. The length range of J is between 2.28 mm and 2.52 mm.

[0011] By adopting the above technical solution, the cutting force can be dispersed during the milling process, a smaller single-edge feed amount can be obtained, and obvious vibration and noise will not be generated. According to the machining conditions of the parts, a suitable inter-tooth angle can be obtained, so that the quality, accuracy and dimensions of the parts machining are more guaranteed.

[0012] The present utility model is further configured as follows: The bottom edge is provided with a certain thickness H, and the width range of H is between 0.298 mm and 0.302 mm. In addition to having a certain thickness, a concave angle is inclined from the outer circle to the axis of the tool head on the side far from the arc-edge tooth, and the concave angle is G. The angle range of G is between 0.18° and 0.24°.

[0013] The present utility model is further configured as follows: The normal arc edge is arranged at a position of the arc-edge tooth far from the axis of the tool head. The spiral angle of the arc-edge tooth rotating along the axis of the blade assembly is D. The angle range of D is between 38° and 40°. The width of the normal arc edge is F, and the width of F is 1.2 mm.

[0014] The present utility model is further configured as follows: The side of the arc-edge tooth far from the tool handle assembly is set as the rake face. The included angle formed by the rake face and the vertical section is K. The angle range of K is between 10° and 12°. The side of the arc-edge tooth far from the rake face is set as the flank face. The included angle formed by the flank face and the horizontal section is L. The angle range of L is between 10° and 12°.

[0015] By adopting the above technical solution, the specific structural organization of the milling cutter blade assembly is further set, and the specific organization is clearly marked and confirmed. The refinement of the structural organization can disperse the resistance during cutting and reduce the vibration and deformation of the tool.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The setting of four groups of arc teeth can disperse the cutting feed during the milling process, obtain a smaller single-edge feed, and will not produce obvious vibration and noise. The tooth angle formed by every two groups of arc teeth can be changed between 85° and 95°, which ensures the quality, accuracy and size of parts processing.

[0018] 2. The side of the arc blade is provided with a normal arc blade. During the processing of parts, the milling cutter cuts by the normal arc blade obliquely, reducing the cutting pressure. In addition, the arc blade rotates along the axis of the blade assembly to form a helix angle, which can reduce the cutting resistance on the back of the milling cutter when working. Finally, the groove depth of the spiral groove formed between two adjacent arc blades can vary between 2.28mm-2.52mm, which can ensure the tool requirements for parts processing.

[0019] 3. When the milling cutter is cutting, the bottom blade contacts the parts first, which can play a certain buffering role, reduce the vibration of the tool during cutting, and play a proper protective role against tool deformation. In addition to having a certain thickness, the bottom blade is provided with a concave angle, which can properly passivate the end face, reduce the pressure of the parts on the tool, and then protect the tool and reduce tool breakage.

[0020] 4. Under the premise of ensuring the durability of the tool, the angle formed by the front cutting edge and the vertical section can reduce the positive pressure of the chips on the front cutting edge, and the cutting deformation is also reduced accordingly.

[0021] 5. The angle formed by the back cutter face and the horizontal section. The setting of this angle can reduce the friction between the back cutter face and the parts, and reduce the impact of heat generation between the parts and the milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a structural schematic diagram of a dynamic milling cutter for parts processing.

[0023] Figure 2 For the utility model Figure 1 Dimensional diagram.

[0024] Figure 3 It is a structural schematic diagram of the cutter head in the utility model.

[0025] Figure 4 For the utility model Figure 1 Right view of .

[0026] Figure 5 For the utility model Figure 1 A partial enlarged view of the A area.

[0027] Figure 6 For the utility model Figure 1 Left view of .

[0028] Description of reference numerals: 1. Tool shank assembly; 11. Shank portion; 12. Tapered portion; 2. Blade assembly; 21. Tool tip; 22. Arc cutting teeth; 23. Normal arc edge; 24. Bottom edge; 25. Front rake face; 26. Rear rake face. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0030] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0031] Please refer to Figure 1-6 , the present utility model provides the following technical solutions:

[0032] Embodiment 1

[0033] Refer to Figure 1 , a dynamic milling cutter for machining parts, including a tool shank assembly 1 and a blade assembly 2. The blade assembly 2 includes a tool tip 21, and the tool tip 21 is connected to one end of the tool shank assembly 1.

[0034] Refer to Figure 1 , Figure 2 and Figure 6 , the blade assembly 2 further includes arc cutting teeth 22. The length of the arc cutting teeth 22 is C, and the length range of C is between 32.15 mm and 32.10 mm. The outer diameter of the tool tip 21 is B, and the length range of B is between 11.997 mm and 11.980 mm. The size of the arc cutting teeth 22 can ensure the needs of part machining and is suitable for the application of a dynamic milling cutter. There are four groups of arc cutting teeth 22, and the four groups of arc cutting teeth 22 can disperse the cutting force during milling, obtain a smaller single-edge feed rate, and will not generate obvious vibration and noise. A tooth space angle is formed between every two groups of arc cutting teeth 22, and the tooth space angle is M. The angle range of M is between 85° and 95°. In practical applications, the arc cutting teeth 22 are appropriately adjusted to make the tooth space angle change between 85° and 95°. According to the situation of part machining, a suitable tooth space angle is obtained, so that the quality, precision and dimensions of part machining are more guaranteed.

[0035] Refer to Figure 1 , Figure 2 and Figure 4, on the sides of the four sets of arc-edge teeth 22, normal arc edges 23 are provided. The shape of the normal arc edge 23 is arc-shaped, the width of the normal arc edge 23 is F, and the width of the F is 1.2 mm. During the process of machining parts, the milling cutter obliquely enters the cutting through the normal arc edge 23 on the cutting arc surface. The normal arc edge 23 is arranged at a position away from the axis of the cutter head 21 of the arc-edge teeth 22. The helix angle of the arc-edge teeth 22 rotating along the axis of the cutting edge assembly 2 is D, and the angle range of D is between 38° and 40°. The setting of the helix angle D can reduce the cutting resistance on the back of the milling cutter during operation, and moreover, the helix angle D changes between 38° and 40° according to the machining requirements of the parts, and the controllable range is small, ensuring the cutting strength of the milling cutter. A spiral groove is formed between two adjacent arc-edge teeth 22. The depth of the spiral groove is J, and the length range of J is between 2.28 mm and 2.52 mm. In practical applications, the depth of the spiral groove can vary between 2.28 mm and 2.52 mm, which can ensure the tool requirements for machining parts.

[0036] Refer to Figure 1 and Figure 3 , at one end of the arc-edge teeth 22 away from the tool handle assembly 1, there is a bottom edge 24. The shape of the bottom edge 24 is quadrilateral, and the bottom edge 24 is provided with a certain thickness H. The width range of H is between 0.298 mm and 0.302 mm. When the milling cutter performs cutting work, the bottom edge 24 first contacts the part, which can play a certain buffering role, reduce the vibration of the tool during cutting, and play an appropriate protective role against tool deformation. In addition to having a certain thickness, on the side of the bottom edge 24 away from the arc-edge teeth 22, a concave angle G is inclined from the outer circle towards the axis of the cutter head 21. The angle of the concave angle G is between 0.18° and 0.24°. The setting of the concave angle G can perform appropriate passivation treatment on the end face. The passivation treatment can reduce the cutting-in amount of the milling cutter during cutting when the milling cutter contacts the part, thereby protecting the tool and reducing tool chipping.

[0037] Refer to Figure 1 and Figure 5 , on the side of the arc-edge teeth 22 away from the tool handle assembly 1, a rake face 25 is provided. The included angle between the rake face 25 and the vertical cutting plane is K, and the angle range of K is between 10° and 12°. The included angle L can be changed between 10° and 12° on the premise of ensuring the tool durability. The setting of the included angle L can reduce the normal pressure of the chip on the rake face, the consumed power is also reduced, and the cutting force and cutting deformation are also reduced accordingly.

[0038] Refer to Figure 1 and Figure 5, on the side of the arc-edge tooth 22 away from the rake face 25, a flank face 26 is provided. The angle formed by the flank face 26 and the horizontal section plane is L, and the angular range of L is between 10° and 12°. The angle L can vary between 10° and 12° according to the actual machining of the parts. The setting of the angle L can reduce the friction between the flank face and the parts, reduce the generation of heat between the parts and the milling cutter, and reduce the influence of heat on the machining of the parts.

[0039] Refer to Figure 1 and Figure 2 , the total length of the cutting edge assembly 2 and the tool holder assembly 1 is E, and the length range of E is between 74.7 mm and 75.3 mm. The tool holder assembly 1 includes a shank portion 11. The shank portion 11 is a cylinder. At one end of the shank portion 11 away from the cutting edge assembly 2, there is a tapered portion 12. The diameter length of the tapered portion 12 is F, and the length of F is 12 mm. The setting of the tapered portion 12 can make the tool easy to install.

[0040] Specifically, the milling cutter body has a cylindrical structure. The tapered portion 12 is provided with a connecting end head, which is connected to the tool fixture. When the milling cutter is working, it obliquely enters the cutting through the bottom edge 24, effectively avoiding the phenomenon of the straight-down cutter breaking the tool; then gradually advancing the milling cutter body to operate on the workpiece, gradually expanding the operation range until the milling cutter body enters. At this time, the normal arc edge 23 on the side of the arc-edge tooth 22 of the milling cutter enters the working state.

[0041] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

Claims

1. A dynamic milling cutter for parts processing, characterized in that It comprises a handle assembly (1) and a blade assembly (2), wherein the blade assembly (2) comprises a blade head (21), and the blade head (21) is connected to one end of the handle assembly (1); The blade assembly (2) further comprises circular arc blade teeth (22), wherein the circular arc blade teeth (22) are provided in four groups, and the side surfaces of the four groups of circular arc blade teeth (22) are all provided with normal circular arc blades (23), the normal circular arc blades (23) are in the shape of an arc, and the circular arc blade teeth (22) are provided with a bottom blade (24) at one end away from the handle assembly (1), and the bottom blade (24) is in the shape of a quadrilateral; The length of the circular arc blade teeth (22) is C, and the length range of C is between 32.15 mm and 32.10 mm. The outer diameter of the cutter head (21) is B, and the length range of B is between 11.997 mm and 11.980 mm. An inter-tooth angle is formed between each two groups of the circular arc blade teeth (22), and the inter-tooth angle is M. The angle range of M is between 85° and 95°. A spiral groove is formed between two adjacent circular arc blade teeth (22), and the groove depth of the spiral groove is J. The length range of J is between 2.28 mm and 2.52 mm.

2. A dynamic milling cutter for parts processing according to claim 1, characterized in that: The total length of the blade assembly (2) and the handle assembly (1) is E, and the length range of E is between 74.7 mm and 75.3 mm. The handle assembly (1) comprises a handle portion (11), and the handle portion (11) is a cylinder. An end of the handle portion (11) away from the blade assembly (2) has a tapered portion (12), and the diameter of the tapered portion (12) is F, and the length of F is 12 mm.

3. The dynamic milling cutter for parts processing according to claim 1, characterized in that: The bottom blade (24) is provided with a certain thickness H, and the width of H ranges from 0.298 mm to 0.302 mm. In addition to having a certain thickness, the bottom blade (24) is provided with a concave angle on a side away from the arc blade teeth (22) inclined from the outer ring toward the axis of the cutter head (21), and the concave angle is G, and the angle range of G is between 0.18° and 0.24°.

4. A dynamic milling cutter for parts processing according to claim 3, characterized in that: The normal circular arc blade (23) is arranged at a position of the circular arc blade tooth (22) away from the axis of the cutter head (21); the spiral angle of the circular arc blade tooth (22) rotating along the axis of the blade assembly (2) is D, the angle range of D is between 38° and 40°, the width of the normal circular arc blade (23) is F, and the width of F is 1.2 mm.

5. A dynamic milling cutter for parts processing according to claim 4, characterized in that: The side of the circular arc blade tooth (22) away from the shank assembly (1) is set as a front cutting edge (25), and the angle formed by the front cutting edge (25) and the vertical section is K, and the angle range of K is between 10° and 12°. The side of the circular arc blade tooth (22) away from the front cutting edge (25) is set as a back cutting edge (26), and the angle formed by the back cutting edge (26) and the horizontal section is L, and the angle range of L is between 10° and 12°.

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