Side milling tool

Abstract

This utility model provides a side-milling tool, comprising: a neck; and a core connected to the neck and having a cutting edge, the cutting edge including a transition edge and a tangential edge, one end of the transition edge connecting to the tangential edge and the other end connecting to the neck, the diameter of a first cutting profile formed by the neck being smaller than the diameter of a second cutting profile formed by the tangential edge, and a third cutting profile formed by the transition edge being an arc segment, one end of which is tangentially connected to the first cutting profile and the other end of which is tangentially connected to the second cutting profile. This side-milling tool avoids the risk of chipping and chip adhesion at the cutting edge, as well as the occurrence of tool marks.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, and in particular to a side milling tool. Background Technology

[0002] In existing aluminum alloy side milling, when the cutting edge length is insufficient to cover the height of the machined surface, tool extension machining is required. Because there is a stepped platform between the shank cutting edge and the vertical cutting edge of the existing tool, the shank cutting edge is prone to chipping and chip adhesion, resulting in tool extension machining easily producing steps and scratches. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a side milling tool that can avoid the risk of chipping and chip adhesion on the cutting edge, as well as the occurrence of tool marks.

[0004] This utility model provides a side milling tool, which includes: a cutter neck; and a core connected to the cutter neck and provided with a cutting edge. The cutting edge includes a transition edge and a tangential edge. One end of the transition edge is connected to the tangential edge, and the other end of the transition edge is connected to the cutter neck. The diameter of a first cutting profile formed by the cutter neck is smaller than the diameter of a second cutting profile formed by the tangential edge. The third cutting profile formed by the transition edge is an arc segment. One end of the arc segment is tangentially connected to the first cutting profile, and the other end of the arc segment is tangentially connected to the second cutting profile.

[0005] The side milling tool provided in this embodiment of the invention has at least the following beneficial effects:

[0006] By setting a transition edge between the tangential cutting edge and the cutting neck, the diameter of the first cutting profile formed by the cutting neck is smaller than the diameter of the second cutting profile formed by the tangential cutting edge, and the third cutting profile formed by the transition edge is an arc segment. One end of the arc segment is tangentially connected to the first cutting profile, and the other end of the arc segment is tangentially connected to the second cutting profile. This creates an arc transition step between the tangential cutting edge and the cutting neck, reducing the sharp point effect of the transition edge, avoiding chipping and chip adhesion of the transition edge, and the arc transition step ensures that the surface of the machined part is free of tool marks.

[0007] In one embodiment of this implementation, the arc segment includes a first arc and a second arc that are tangentially connected, and the first cutting profile, the first arc, the second arc and the second cutting profile are sequentially tangentially connected.

[0008] In one embodiment of this implementation, the ratio of the core diameter corresponding to the core portion to the cutting edge diameter corresponding to the cutting edge ranges from 0.45 to 0.55.

[0009] In one embodiment of this implementation, the number of cutting edges is three, the helix angle of the cutting edges ranges from 37° to 43°, and the rake angle of the cutting edges is from 11° to 17°.

[0010] In one embodiment of this implementation, the number of cutting edges is three. The three cutting edges are defined as a first edge, a second edge, and a third edge arranged sequentially in the circumferential direction. There is a first division between the first edge and the second edge, a second division between the second edge and the third edge, and a third division between the third edge and the first edge. The range of the first division is 116°-118°, the range of the second division is 119°-121°, and the range of the third division is 122°-124°.

[0011] In one embodiment of this implementation, there are multiple cutting edges, and a chip removal groove is formed between two adjacent cutting edges. The orthographic projection of the inner wall of the chip removal groove on the axial direction of the core is a first arc, a second arc, and a third arc connected sequentially in the cutting direction. The radius of the first arc is 1.1mm-1.5mm, the radius of the second arc is 4.8mm-5.4mm, and the radius of the third arc is 9.0mm-10.6mm.

[0012] In one embodiment of this implementation, the tangential cutting edge includes a peripheral cutting portion, the peripheral cutting portion having a cylindrical finishing blade, and the width of the cylindrical finishing blade being 0.05mm-0.07mm.

[0013] In one embodiment of this implementation, the peripheral cutting edge includes a first rear cutting edge and a second rear cutting edge. The cylindrical finishing blade, the first rear cutting edge, and the second rear cutting edge are connected in sequence. The rear angle of the first rear cutting edge is 12°-18°, the rear angle of the second rear cutting edge is 25°-35°, the blade width of the first rear cutting edge is 0.4mm-0.5mm, and the blade width of the second rear cutting edge is 1.0mm-1.1mm.

[0014] In one embodiment of this implementation, the groove width of the peripheral cutting edge is 2.0mm-2.2mm.

[0015] In one embodiment of this implementation, the tangential cutting edge includes a peripheral cutting portion, the peripheral cutting portion having a cylindrical finishing blade, the end face finishing arc radius of the cylindrical finishing blade being 1.8mm-2.2mm, and the height of the cylindrical finishing blade in the axial direction of the core being 0.15mm-0.21mm.

[0016] In one embodiment of this implementation, the tangential cutting edge includes an end cutting portion, the end tooth rake angle of the end cutting portion is 6°-10°, and the cutting edge inclination angle of the end cutting portion is 5°-9°.

[0017] In one embodiment of this implementation, the number of cutting edges is three, defined as a first edge, a second edge, and a third edge arranged sequentially in the circumferential direction. The tangential cutting edge includes an end cutting portion. The end face backlash angle of the end cutting portion of the first edge is 35°-41°, the end face backlash angle of the end cutting portion of the second edge is 42°-48°, and the end face backlash angle of the end cutting portion of the third edge is 42°-48°.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a side milling tool according to one embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A top view of the side milling tool structure;

[0022] Figure 3 yes Figure 1 A side view of the side milling tool.

[0023] Figure 4 yes Figure 1 A schematic diagram of the cutting profile of a side milling tool;

[0024] Figure 5 yes Figure 4 An enlarged schematic diagram of region B;

[0025] Figure 6 yes Figure 3 A schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 7 yes Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0027] Figure label:

[0028] Side milling tool 100;

[0029] 10-inch neck; 11-inch first cutting profile;

[0030] Core 20;

[0031] Cutting edge 30; First cutting edge 35; Second cutting edge 36; Third cutting edge 37; Transition cutting edge 31; Third cutting profile 310; First circular arc 311; Second circular arc 312; Tangential cutting edge 32; Circumferential cutting edge 321; End cutting edge 322; Second cutting profile 320; Chip groove 350;

[0032] Handle 40. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Please see Figure 1 , Figure 4 and Figure 5 , Figure 1 This is a three-dimensional structural schematic diagram of a side milling tool 100 according to one embodiment of the present utility model; Figure 4 yes Figure 1 A schematic diagram of the cutting profile of the side milling tool 100; Figure 5 yes Figure 4 An enlarged schematic diagram of region B. This utility model provides a side milling tool 100, which includes a neck 10 and a core 20. The core 20 is connected to the neck 10 and has a cutting edge 30. The cutting edge 30 includes a transition cutting edge 31 and a tangential cutting edge 32. One end of the transition cutting edge 31 is connected to the tangential cutting edge 32, and the other end of the transition cutting edge 31 is connected to the neck 10. The diameter of the first cutting profile 11 formed by the neck 10 is smaller than the diameter of the second cutting profile 320 formed by the tangential cutting edge 32. The third cutting profile 310 formed by the transition cutting edge 31 is an arc segment, one end of which is tangentially connected to the first cutting profile 11, and the other end of which is tangentially connected to the second cutting profile 320.

[0039] Specifically, the side milling tool 100 also includes a tool holder 40, which is connected to the end of the cutter neck 10 facing away from the core 20 and is used for clamping and fixing by the milling machine.

[0040] By setting a transition edge 31 between the tangential cutting edge 32 and the neck 10, the diameter of the first cutting profile 11 formed by the neck 10 is smaller than the diameter of the second cutting profile 320 formed by the tangential cutting edge 32, and the third cutting profile 310 formed by the transition edge 31 is an arc segment. One end of the arc segment is tangentially connected to the first cutting profile 11, and the other end of the arc segment is tangentially connected to the second cutting profile 320, so that an arc transition step is formed between the tangential cutting edge 32 and the neck 10, reducing the sharp point effect of the transition edge 31, avoiding chipping and chip adhesion of the transition edge 31, and the arc transition step makes the surface of the tool connection process free of tool marks.

[0041] In one embodiment of this implementation, please refer to Figure 5 The arc segment includes a first arc 311 and a second arc 312 that are tangentially connected. The first cutting contour 11, the first arc 311, the second arc 312, and the second cutting contour 320 are sequentially and tangentially connected. This arrangement allows the arc segment to be tangentially connected to the first cutting contour 11 and the second cutting contour 320, and the contour of the arc segment itself is relatively smooth.

[0042] Specifically, the center of the first arc 311 is located on the side opposite to the axis of the core 20, and the center of the second arc 312 is located on the side facing the axis of the core 20. This makes the center positions of the first arc 311 and the second arc 312 opposite, so as to achieve a tangential connection between the first arc 311 and the second arc 312.

[0043] In one embodiment of this implementation, please refer to Figure 6 , Figure 6 yes Figure 3 A schematic diagram of the cross-sectional structure at point AA; Figure 2 yes Figure 1 A top view of the side milling tool 100 is shown. The ratio of the core diameter Dc corresponding to the core 20 to the cutting edge diameter Dh corresponding to the cutting edge 30 ranges from 0.45 to 0.55. Specifically, this ratio range can be selected as 0.45, 0.5, 0.52, 0.55, etc. This setting can improve the overall chip removal capability and tool strength of the tool, enabling it to better handle the cutting of soft materials such as aluminum products with large allowances.

[0044] In one embodiment of this implementation, please refer to Figure 3 and Figure 6 , Figure 3 yes Figure 1 A side view of the side milling tool 100 is shown. There are three cutting edges 30, with a helix angle β ranging from 37° to 43° and a rake angle β1 ranging from 11° to 17°. Specifically, the helix angle β can be selected as 37°, 40°, 43°, etc., and the rake angle β1 can be selected as 11°, 15°, 17°, etc. This configuration helps improve the surface finish of the product during finishing.

[0045] In one embodiment of this implementation, please refer to Figure 1 and Figure 7 , Figure 7 yes Figure 3The diagram shows a cross-sectional view at point AA. There are three cutting edges 30, defined as a first edge 35, a second edge 36, and a third edge 37 arranged sequentially in the circumferential direction. The first edge 35 and the second edge 36 have a first division A1, the second edge 36 and the third edge 37 have a second division A2, and the third edge 37 and the first edge 35 have a third division A3. The range of the first division A1 is 116°-118°, the range of the second division A2 is 119°-121°, and the range of the third division A3 is 122°-124°. Specifically, the sum of the first division A1, the second division A2, and the third division A3 is 360°. The first graduation A1 can be selected as 116°, 117°, 118°, etc.; the second graduation A2 can be selected as 119°, 120°, 121°, etc.; and the third graduation A3 can be selected as 122°, 123°, 124°, etc. During roughing, this design helps reduce tool vibration, improves the surface finish, and extends tool life.

[0046] In one embodiment of this implementation, please refer to Figure 3 and Figure 6 The tool has multiple cutting edges 30, and a chip removal groove 350 is formed between two adjacent cutting edges 30. The orthographic projection of the inner wall of the chip removal groove 350 onto the core 20 in the axial direction is a first arc, a second arc, and a third arc connected sequentially in the cutting direction. The radius r1 of the first arc is 1.1mm-1.5mm, the radius r2 of the second arc is 4.8mm-5.4mm, and the radius r3 of the third arc is 9.0mm-10.6mm. Specifically, the radius r1 can be selected as 1.1mm, 1.3mm, 1.5mm, etc., the radius r2 can be selected as 4.8mm, 5.1mm, 5.4mm, etc., and the radius r3 can be selected as 9.0mm, 9.8mm, 10.6mm, etc. This configuration provides a larger chip flow space in the chip removal groove 350, strengthening the tool's backing structure.

[0047] In one embodiment of this implementation, please refer to Figure 3 and Figure 6 The tangential cutting edge 32 includes a peripheral cutting portion 321, which has a cylindrical finishing edge with a cutting width W1 of 0.05mm-0.07mm. Specifically, the cutting width W1 can be selected as 0.05mm, 0.06mm, 0.07mm, etc. This configuration allows the tiny cylindrical finishing edge to compress the machined surface during finishing, resulting in a smoother surface.

[0048] In this embodiment, the peripheral cutting edge 321 includes a first rear cutting edge and a second rear cutting edge. A cylindrical finishing blade, the first rear cutting edge, and the second rear cutting edge are connected sequentially. The rear angle a1 of the first rear cutting edge is 12°-18°, the rear angle a2 of the second rear cutting edge is 25°-35°, the blade width W2 of the first rear cutting edge is 0.4mm-0.5mm, and the blade width W3 of the second rear cutting edge is 1.0mm-1.1mm. The groove width W4 of the peripheral cutting edge 321 is 2.0mm-2.2mm. Specifically, the rear angle a1 can be selected as 12°, 15°, 18°, etc.; the rear angle a2 can be selected as 25°, 30°, 35°, etc.; the blade width W2 can be selected as 0.4mm, 0.45mm, 0.5mm, etc.; the blade width W3 can be selected as 1.0mm, 1.05mm, 1.1mm, etc.; and the groove width W4 can be selected as 2.0mm, 2.1mm, 2.2mm, etc. With this configuration, the back angles of the planes a1 and a2 can provide a large clearance space during roughing, which can meet the clearance requirements for large depth of cut and large feed, so as to better carry out integrated roughing and finishing.

[0049] In this embodiment, the cylindrical finishing blade forms fewer high points on the processed surface than the straight finishing blade, resulting in a smoother surface finish.

[0050] In one embodiment of this implementation, please refer to Figure 3 The tangential cutting edge 32 includes a peripheral cutting portion 321, which has a cylindrical finishing edge. The finishing radius rc of the end face of the cylindrical finishing edge is 1.8mm-2.2mm, and the height wt of the cylindrical finishing edge in the axial direction of the core 20 is 0.15mm-0.21mm. Specifically, the finishing radius rc can be selected from values ​​such as 1.8mm, 2.0mm, and 2.2mm, and the height wt can be selected from values ​​such as 0.15mm, 0.18mm, and 0.21mm. This configuration allows the tool to perform fine finishing on the machined surface during planar machining, while further reducing the tool tip effect and minimizing the risk of tool tip chipping.

[0051] In one embodiment of this implementation, please refer to Figure 2 and Figure 3 The tangential cutting edge 32 includes an end cutting portion 322, with an end tooth rake angle β3 of 6°-10° and a cutting edge inclination angle λ of 5°-9°. Specifically, the end tooth rake angle β3 can be selected as 6°, 8°, 10°, etc., and the cutting edge inclination angle λ can be selected as 5°, 7°, 9°, etc. This setting ensures that the end cutting portion 322 has sufficient chip space and sharpness during helical interpolation.

[0052] In one embodiment of this implementation, please refer to Figure 1The tool has three cutting edges 30, defined as a first edge 35, a second edge 36, and a third edge 37 arranged sequentially in the circumferential direction. The tangential cutting edge 32 includes an end face 322. The end face backlash angle (GAL) of the end face 322 of the first edge 35 is 35°-41°, the end face backlash angle (not marked) of the end face 322 of the second edge 36 is 42°-48°, and the end face backlash angle (not marked) of the end face 322 of the third edge 37 is 42°-48°. Specifically, the values ​​of the aforementioned end face backlash angles can include both upper and lower limits of the range. This design helps to increase the chip space of the tool, and the chips can flow along the backlash grooves to the chip removal groove 350, ensuring smooth chip removal.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A side milling machining tool, characterized in that, include: Neck; The core is connected to the blade neck and has a cutting edge. The cutting edge includes a transition edge and a tangential edge. One end of the transition edge is connected to the tangential edge, and the other end of the transition edge is connected to the blade neck. The diameter of the first cutting profile formed by the blade neck is smaller than the diameter of the second cutting profile formed by the tangential edge. The third cutting profile formed by the transition edge is an arc segment. One end of the arc segment is tangentially connected to the first cutting profile, and the other end of the arc segment is tangentially connected to the second cutting profile.

2. The side milling tool according to claim 1, characterized in that The arc segment includes a first arc and a second arc that are tangentially connected, and the first cutting profile, the first arc, the second arc and the second cutting profile are sequentially tangentially connected.

3. The side milling tool according to claim 1, characterized in that The ratio of the core diameter corresponding to the core to the cutting edge diameter corresponding to the cutting edge is in the range of 0.45-0.

55.

4. The side milling tool according to claim 1, characterized in that The number of cutting edges is 3, the helix angle of the cutting edges ranges from 37° to 43°, and the rake angle of the cutting edges is from 11° to 17°.

5. The side milling tool according to claim 1, characterized in that The number of cutting edges is three, defined as a first edge, a second edge, and a third edge arranged sequentially in the circumferential direction. There is a first division between the first edge and the second edge, a second division between the second edge and the third edge, and a third division between the third edge and the first edge. The range of the first division is 116°-118°, the range of the second division is 119°-121°, and the range of the third division is 122°-124°.

6. The side milling tool according to claim 1, characterized in that, The number of cutting edges is multiple, and a chip removal groove is formed between two adjacent cutting edges. The orthographic projection of the inner wall of the chip removal groove on the axial direction of the core is a first arc, a second arc, and a third arc connected in sequence in the cutting direction. The radius of the first arc is 1.1mm-1.5mm, the radius of the second arc is 4.8mm-5.4mm, and the radius of the third arc is 9.0mm-10.6mm.

7. The side milling tool according to claim 1, characterized in that, The tangential cutting edge includes a peripheral cutting portion, which has a cylindrical finishing edge with a cutting width of 0.05mm-0.07mm.

8. The side milling tool according to claim 1, characterized in that, The tangential cutting edge includes a peripheral cutting portion, which has a cylindrical finishing blade. The finishing arc radius of the end face of the cylindrical finishing blade is 1.8mm-2.2mm, and the height of the cylindrical finishing blade in the axial direction of the core is 0.15mm-0.21mm.

9. The side milling tool according to claim 1, characterized in that, The tangential cutting edge includes an end cutting portion, the end tooth rake angle of the end cutting portion is 6°-10°, and the cutting edge inclination angle of the end cutting portion is 5°-9°.

10. The side milling tool according to claim 1, characterized in that, The number of cutting edges is three, and the three cutting edges are defined as the first edge, the second edge, and the third edge arranged sequentially in the circumferential direction. The tangential cutting edge includes an end cutting portion. The end face tooth clearance angle of the end cutting portion of the first edge is 35°-41°, the end face tooth clearance angle of the end cutting portion of the second edge is 42°-48°, and the end face tooth clearance angle of the end cutting portion of the third edge is 42°-48°.

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