Plugging milling cutter and machining equipment

Abstract

The utility model discloses a plunge milling cutter and machining equipment. The plunge milling cutter comprises a cutter handle and a cutter head which are connected with each other. The tool bit comprises four cutting edges, the four cutting edges are all spirally arranged, and each cutting edge comprises a first section. In the first section, the outer diameters of the two cutting edges are D1, the outer diameters of the other two cutting edges are D2, and D1 is larger than D2. When the plunge milling cutter is used for machining a product, the first section of the cutting edge is used for machining the side wall of a hole of the product, and the different cutting edges of the first section are designed to be unequal in outer diameter, so that sweeps generated during machining can be refined, the structural strength of the sweeps is reduced, the risk that the first section is wound with the sweeps is reduced, and the machining quality of the side wall of the hole is improved.

Description

Technical Field

[0001] The present application belongs to the field of mechanical processing technology, and in particular relates to a plunge milling cutter and processing equipment. Background Art

[0002] At present, traditional plunge milling cutters are prone to chip entanglement when processing the side walls of product holes. Chip entanglement can cause the risk of scratching the side walls of the holes, affecting the processing quality of the product holes. Utility Model Content

[0003] In view of the above situation, it is necessary to provide a plunge milling cutter to reduce the risk of chip entanglement and improve the processing quality of the hole wall.

[0004] The embodiment of the present application provides a plunge milling cutter, comprising a tool handle and a tool head connected to each other. The tool head comprises four cutting edges, and the four cutting edges are all spirally arranged, and each of the cutting edges comprises a first section. In the first section, the outer diameters of two of the cutting edges are D1, and the outer diameters of the other two of the cutting edges are D2, and D1>D2.

[0005] When the above-mentioned plunge milling cutter processes a product, the first section of the cutting edge processes the side wall of the hole of the product. By designing the different cutting edges of the first section to have different outer diameters, the waste chips generated by the processing can be refined, reducing the structural strength of the waste chips, thereby reducing the risk of chip entanglement in the first section, which is beneficial to improving the processing quality of the side wall of the hole.

[0006] In some embodiments of the present application, D1-D2=0.1 mm. By designing the different cutting edges of the first section to have an outer diameter difference of 0.1 mm, the waste chips generated by processing can be refined, and the risk of waste chip entanglement can be reduced, and the impact of waste chip entanglement on the processing quality of the hole side wall can be reduced, thereby improving the processing quality of the hole side wall.

[0007] In some embodiments of the present application, each of the cutting edges further includes a second section, the second section is connected to the first section and is located between the first section and the tool handle; in the second section, the maximum outer diameter of the four cutting edges is D3, D1>D2>D3. A second section with a smaller outer diameter is designed at the rear end of the first section, and the second section can be used as a hollow groove to reduce the contact area between the cutting edge and the side wall of the hole, which is conducive to reducing the risk of vibration of the plunge milling cutter, reducing the risk of vibration marks on the side wall of the hole, and further improving the processing quality of the side wall of the hole.

[0008] In some embodiments of the present application, D1-D3=0.03mm. By designing the first section and the second section as a variable diameter structure with an outer diameter difference of 0.03mm, the second section with a smaller outer diameter can be used as a hollow groove to reduce the contact area between the cutting edge and the hole side wall, which is conducive to reducing the risk of vibration of the plunge milling cutter, reducing the risk of vibration marks on the hole side wall, and improving the processing quality of the hole side wall.

[0009] In some embodiments of the present application, along the axial direction, the length of the first segment is L1, and L1=0.3 mm.

[0010] In some embodiments of the present application, the cutting edge further comprises a third section, the third section is arranged on a side of the second section away from the first section and connected to the second section; the outer diameter of the third section is equal to the maximum outer diameter D1 of the first section. The third section can be used to process a position on the side wall of the hole close to the hole opening, and the third section and the first section cooperate to process the side wall of the hole, which can reduce the risk of vibration of the plunge milling cutter, reduce the risk of vibration marks on the side wall of the hole, and improve the processing quality of the side wall of the hole.

[0011] In some embodiments of the present application, the cutting edge also includes a fourth section, which is arranged on the side of the third section away from the second section and connected to the third section. The area where the third section and the fourth section are connected to each other is a rounded transition, and the rounded transition area can be used to chamfer the hole opening to improve the processing quality of the hole.

[0012] In some embodiments of the present application, the cutting edge further comprises a fifth section, the fifth section is arranged on a side of the first section away from the tool handle and connected to the first section; the outer diameter of the fifth section is smaller than the minimum outer diameter D2 of the first section. The fifth section is located at the front end of the first section and can be used to finish the side wall of the hole to improve the processing quality of the side wall of the hole.

[0013] In some embodiments of the present application, the cutter head further comprises an end blade, which is arranged at the end of the cutter head away from the handle and connected to the fifth section. The end blade can be used to process the flat surface of the product.

[0014] An embodiment of the present application further provides a processing device, comprising the plunge milling cutter according to any one of the aforementioned embodiments.

[0015] When the above-mentioned processing equipment is used to process products, the first section of the cutting edge on the plunge milling cutter processes the side wall of the hole of the product. By designing the different cutting edges of the first section to have different outer diameters, the waste chips generated by the processing can be refined, and the structural strength of the waste chips can be reduced, thereby reducing the risk of chip entanglement in the first section, which is beneficial to improving the processing quality of the side wall of the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a plunge milling cutter in one embodiment of the present application.

[0017] Figure 2 It is a partial enlarged view of the cutter head in one embodiment of the present application.

[0018] Figure 3 It is a cross-sectional view of the side blade portion in one embodiment of the present application.

[0019] Figure 4 It is a schematic diagram of the structure of the bottom blade in one embodiment of the present application.

[0020] Figure 5 It is a structural schematic diagram of a processing device in an embodiment of the present application.

[0021] Reference numerals

[0022] Plunge milling cutter 100

[0023] Handle 10

[0024] Segment 20

[0025] Cutting edge 21

[0026] First paragraph 211

[0027] Second paragraph 212

[0028] Section 3 213

[0029] Section 4 214

[0030] Section 5 215

[0031] Section 6 216

[0032] Chip groove 22

[0033] Core 23

[0034] End blade 24

[0035] Side Blade 241

[0036] Bottom blade 242

[0037] Processing equipment 200

[0038] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0040] It should be noted that, in this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0042] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0043] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. The various embodiments in the present application may be combined with each other in the absence of conflict.

[0044] It should be noted that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation to the present application.

[0045] An embodiment of the present application provides a plunge milling cutter, comprising a tool holder and a tool head connected to each other. The tool head comprises a plurality of cutting edges and a plurality of chip grooves, and the cutting edges and the chip grooves are both spirally arranged. The cutting edge comprises a first section and a second section, the first section and the second section are arranged and connected along the axial direction of the plunge milling cutter, and the first section is located on the side of the second section away from the tool holder, and the first section is used to process the side wall of the hole of the product. In the first section, the outer diameters of the plurality of cutting edges are not equal. The maximum outer diameter of the first section is D1, and the outer diameter of the second section is D2, and D1>D2.

[0046] When the above-mentioned plunge milling cutter is used to process products, the first section with a larger outer diameter is used to process the side walls of the hole. By having different outer diameters of different cutting edges in the first section, the waste chips generated by the processing can be refined, reducing the structural strength of the waste chips, thereby reducing the risk of chip entanglement in the first section and improving the processing quality of the side walls of the hole; and, a second section with a smaller outer diameter is designed at the rear end of the first section. The second section can be used as a hollow groove to reduce the contact area between the cutting edge and the side walls of the hole, which is beneficial to reducing the risk of vibration of the plunge milling cutter and the risk of chatter marks on the side walls of the hole, thereby further improving the processing quality of the side walls of the hole.

[0047] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0048] like Figure 1 and Figure 2 As shown, the embodiment of the present application provides a plunge milling cutter 100, comprising a tool holder 10 and a tool head 20 connected to each other. The tool head 20 comprises a plurality of cutting edges 21 and a plurality of chip grooves 22, and the cutting edges 21 and the chip grooves 22 are all spirally arranged.

[0049] In one embodiment, the cutter head 20 includes four cutting edges 21 and four chip grooves 22 . The cutting edges 21 and the chip grooves 22 are adjacently arranged along the circumferential direction of the plunge milling cutter 100 .

[0050] Each cutting edge 21 includes a first section 211 . In the first section 211 , the outer diameters of two cutting edges 21 are D1 , and the outer diameters of the other two cutting edges 21 are D2 , where D1 > D2 .

[0051] When the above-mentioned plunge milling cutter 100 processes a product, the first section 211 of the cutting edge 21 processes the side wall of the hole of the product. By designing different cutting edges 21 of the first section 211 to have different outer diameters, the waste chips generated by the processing can be refined, and the structural strength of the waste chips can be reduced, thereby reducing the risk of chip entanglement in the first section 211 and improving the processing quality of the side wall of the hole.

[0052] In one embodiment, D1-D2=0.1 mm. By designing the different cutting edges 21 of the first section 211 to have an outer diameter difference of 0.1 mm, the waste chips generated by processing can be refined, and the risk of waste chip entanglement can be reduced, and the impact of waste chip entanglement on the processing quality of the hole side wall can be reduced, thereby improving the processing quality of the hole side wall.

[0053] In one embodiment, in the first section 211, the cutting edges 21 with larger outer diameters and the cutting edges 21 with smaller outer diameters are alternately arranged along the circumferential direction of the plunge milling cutter 100, that is, a cutting edge 21 with larger outer diameter is located between two cutting edges 21 with smaller outer diameters, which is beneficial to further reduce the risk of waste chip entanglement and improve the processing quality of the side wall of the hole.

[0054] In one embodiment, in the first section 211 , the outer diameter D1 of two cutting edges 21 is 1.83 mm, and the outer diameter D2 of the other two cutting edges 21 is 1.73 mm.

[0055] In one embodiment, each cutting edge 21 further includes a second section 212, which is connected to the first section 211 and located between the first section 211 and the handle 10. In the second section 212, the maximum outer diameter of the four cutting edges 21 is D3, D1>D2>D3.

[0056] A second section 212 with a smaller outer diameter is designed at the rear end of the first section 211. The second section 212 can be used as a hollow groove to reduce the contact area between the cutting edge 21 and the side wall of the hole, which is beneficial to reduce the risk of vibration of the milling cutter 100 and the risk of vibration marks on the side wall of the hole, thereby further improving the processing quality of the side wall of the hole.

[0057] In one embodiment, D1-D3=0.03 mm. By designing the first section 211 and the second section 212 as a variable diameter structure with an outer diameter difference of 0.03 mm, the second section 212 with a smaller outer diameter can be used as a hollow groove to reduce the contact area between the cutting edge 21 and the hole side wall, which is conducive to reducing the risk of vibration of the plunge milling cutter 100, reducing the risk of vibration marks on the hole side wall, and improving the processing quality of the hole side wall.

[0058] In one embodiment, in the second section 212 , the outer diameter D3 of the cutting edge 21 is 1.77 mm.

[0059] In one embodiment, along the axial direction, the length of the first section 211 is L1, where L1 = 0.3 mm.

[0060] In one embodiment, along the axial direction, the length of the second section 212 is L3, where L3=1.15 mm.

[0061] In one embodiment, the cutting edge 21 further includes a third section 213 . The third section 213 is disposed on a side of the second section 212 away from the first section 211 and connected to the second section 212 .

[0062] In one embodiment, the outer diameter of the third section 213 is equal to the maximum outer diameter D1 of the first section 211. The third section 213 can be used to process the position on the side wall of the hole close to the hole mouth. The third section 213 and the first section 211 cooperate to process the side wall of the hole, which can reduce the risk of vibration of the milling cutter 100 and the risk of vibration marks on the side wall of the hole, thereby improving the processing quality of the side wall of the hole.

[0063] In one embodiment, along the axial direction, the length of the third section 213 is L2, where L2=0.1 mm.

[0064] In one embodiment, the cutting edge 21 also includes a fourth section 214, which is disposed on the side of the third section 213 away from the second section 212 and connected to the third section 213. The area where the third section 213 and the fourth section 214 are connected to each other is a rounded transition, which can be used to chamfer the hole opening, and the rounded transition cooperates with the third section 213 to process the hole opening area, which is beneficial to improving the processing quality of the hole.

[0065] In one embodiment, the cutting edge 21 further includes a fifth section 215, which is disposed on a side of the first section 211 away from the second section 212 and connected to the first section 211. The fifth section 215 can be used to refine the side wall of the hole to improve the processing quality of the side wall of the hole.

[0066] In one embodiment, the outer diameter of the fifth section 215 is D4, D4<D2<D1. When the first section 211 processes the hole side wall, the outer diameter of the fifth section 215 is smaller than the outer diameter of the first section 211, which is beneficial to reduce the contact area between the cutting edge 21 and the hole side wall, reduce the risk of chatter marks on the hole side wall, and improve the processing quality of the hole side wall.

[0067] In one embodiment, the outer diameter D4 of the fifth segment 215 is 1.5 mm.

[0068] In one embodiment, along the axial direction, the length of the fifth segment 215 is L4, where L4=1.5 mm.

[0069] In one embodiment, the cutting edge 21 further includes a sixth segment 216 , which is disposed between the first segment 211 and the fifth segment 215 and connects the first segment 211 and the fifth segment 215 .

[0070] In one embodiment, the outer diameter of the sixth section 216 is D5, D5<D4<D2. When the fifth section 215 processes the hole side wall, the sixth section 216 can be used as a hollow groove to reduce the contact area between the cutting edge 21 and the hole side wall, which is beneficial to reduce the risk of vibration of the plunge milling cutter 100, reduce the risk of vibration marks on the hole side wall, and improve the processing quality of the hole side wall.

[0071] In one embodiment, the outer diameter D5 of the sixth section 216 is 1.45 mm.

[0072] like Figures 2 to 4 As shown, in one embodiment, the cutter head 20 further includes an end blade 24, which is disposed at the end of the cutter head 20 away from the handle 10 and connected to the fifth section 215. The end blade 24 can be used to process the plane of the product.

[0073] In one embodiment, the end edge 24 includes a side edge 241 and a bottom edge 242 .

[0074] In one embodiment, the rake angle β1 of the side edge 241 is 12°.

[0075] In one embodiment, the back angle α1 of the side cutting edge 241 is 12°.

[0076] In one embodiment, the back width f2 of the side edge 241 is 0.14 mm.

[0077] In one embodiment, the rake angle λ of the bottom edge 242 ranges from 2° to 2.5°.

[0078] In one embodiment, the back angle α3 of the bottom edge 242 is 8°.

[0079] In one embodiment, the back width f3 of the bottom edge 242 is 0.18 mm.

[0080] In one embodiment, the cutter head 20 further includes a core 23 , the core 23 is connected to the tool handle 10 , and the cutting edge 21 and the chip groove 22 are disposed on the surface of the core 23 .

[0081] In one embodiment, the diameter of the core 23 is D6, where D6=0.9 mm.

[0082] like Figure 5 As shown, an embodiment of the present application further provides a processing device 200, comprising the plunge milling cutter 100 of any one of the aforementioned embodiments.

[0083] When the above-mentioned processing equipment 200 processes a product, the first section 211 of the cutting edge 21 on the plunge milling cutter 100 processes the side wall of the hole of the product. By designing different cutting edges 21 of the first section 211 to have different outer diameters, the waste chips generated by the processing can be refined, and the structural strength of the waste chips can be reduced, thereby reducing the risk of chip entanglement in the first section 211 and improving the processing quality of the side wall of the hole.

[0084] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the disclosure scope of the present application.

Claims

1. A plunge milling cutter, comprising a tool handle and a tool head connected to each other, characterized in that: The cutter head comprises four cutting edges, and the four cutting edges are all spirally arranged. Each of the cutting edges comprises a first section arranged along the axial direction of the plunge milling cutter, and the first section is used for processing the side wall of the hole of the product; In the first section, the outer diameters of two of the cutting edges are D1, and the outer diameters of the other two of the cutting edges are D2, and D1>D2.

2. The plunge milling cutter according to claim 1, characterized in that D1-D2=0.1mm.

3. The plunge milling cutter according to claim 1, characterized in that: Each of the cutting edges further comprises a second section, the second section being connected to the first section and being located between the first section and the handle; In the second section, the maximum outer diameter of the four cutting edges is D3, and D1>D2>D3.

4. The plunge milling cutter according to claim 3, characterized in that: D1-D3=0.03mm.

5. The plunge milling cutter according to claim 1, characterized in that: Along the axial direction of the plunge milling cutter, the length of the first section is L1, where L1=0.3 mm.

6. The plunge milling cutter according to claim 3, characterized in that: The cutting edge further comprises a third section, which is arranged on a side of the second section away from the first section and connected to the second section; The outer diameter of the third section is equal to the maximum outer diameter D1 of the first section.

7. The plunge milling cutter according to claim 6, characterized in that The cutting edge also includes a fourth section, which is arranged on a side of the third section away from the second section and connected to the third section, and a region where the third section and the fourth section are connected to each other is a rounded transition.

8. The plunge milling cutter according to claim 1, characterized in that The cutting edge further comprises a fifth section, which is arranged on a side of the first section away from the handle and connected to the first section; The outer diameter of the fifth section is smaller than the minimum outer diameter D2 of the first section.

9. The plunge milling cutter according to claim 1, characterized in that: The cutter head also includes an end blade, which is arranged at the end of the cutter head away from the handle.

10. A processing equipment, characterized in that: The plunge milling cutter comprises a plunge milling cutter as claimed in any one of claims 1 to 9.

Images