A milling cutter

Abstract

The utility model discloses a milling cutter, including the cutter head and blade, the cutter head outer periphery is along the circumferential interval and is equipped with a plurality of blade mounting department that protrudes along the radial, be equipped with a blade mounting groove on each blade mounting department, the blade includes the first blade and second blade of different shape, the blade mounting groove includes the first installation groove for installing the first blade and the second installation groove for installing the second blade, the first installation groove includes the first orientation groove and the second orientation groove of same shape but side opening direction opposite along the cutter head axial, when the first blade is loaded into the first orientation groove or the second orientation groove, the corresponding first cutting edge on it is by side opening and is stretched out, the second blade is installed in the second installation groove, and it has the second cutting edge that stretches out in the cutter head radial second installation groove, the milling cutter structure in the utility model is optimized design, has realized the efficient reuse of blade, has improved blade utilization ratio and reduced the processing cost significantly.

Description

Technical Field

[0001] This utility model relates to the field of metal cutting technology, and specifically to a milling cutter for milling operations. Background Technology

[0002] In the field of machining, milling cutters are commonly used cutting tools for milling various features of workpieces, such as planes and grooves. To improve efficiency, common milling cutters have multiple inserts mounted on the outer circumference of the cutter head to achieve high feed rates. However, existing milling cutters of this type have the following shortcomings: inserts used for milling the side of grooves typically only have a single cutting edge engaged in the cutting process. When the cutting edge on that side wears out, even if the cutting edges on other parts of the insert remain intact, they often cannot be replaced due to limitations in the mounting structure, resulting in low insert utilization and waste. Utility Model Content

[0003] In response to this, the present invention provides a milling cutter that can effectively improve the utilization rate of the cutting tool and reduce production costs.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides a milling cutter, including a cutter head and inserts. The cutter head has a plurality of radially protruding insert mounting portions spaced circumferentially around its outer periphery. Each insert mounting portion has an insert mounting groove for mounting an insert. The inserts include a first insert and a second insert with different shapes. The first insert has at least two first cutting edges. The insert mounting groove includes a first mounting groove for mounting the first insert and a second mounting groove for mounting the second insert. The first mounting groove includes a first oriented groove and a second oriented groove with the same shape but opposite side opening directions along the axial direction of the cutter head. When the first insert is inserted into the first oriented groove or the second oriented groove, its corresponding first cutting edge protrudes from the side opening. The second insert is installed in the second mounting groove and has a second cutting edge that extends radially out of the second mounting groove from the cutter head.

[0006] Preferably, the first blade is an equilateral triangle, with the first cutting edge formed on both sides of each corner, the first mounting groove is adapted to the shape of the first blade, and the inner end is provided with a first clearance groove.

[0007] Preferably, the second blade is quadrilateral, with a second cutting edge at each corner; the second mounting groove has a V-shaped limiting wall and a second clearance groove at the inner bottom end.

[0008] Preferably, the first blade and the second blade are fixedly connected to the corresponding blade mounting part by fastening screws.

[0009] Preferably, the cutter head has an axially penetrating mounting hole at its center, and a keyway is provided on the wall of the mounting hole.

[0010] Preferably, the edge of the blade mounting portion is provided with a chip removal groove.

[0011] The positive effects of this utility model are as follows: The milling cutter structure in this utility model is optimized by setting a first directional groove and a second directional groove with opposite side opening directions. After the first cutting edge on one side of the first insert is worn, it can be installed by reversing the direction and continue to work using the intact first cutting edge on the other side. This realizes the reuse of the first insert, effectively extends its service life, and significantly reduces the cost of tool consumption. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art are briefly introduced below. Similar elements or parts in the drawings are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0013] Figure 1 This is a front view of the milling cutter in this utility model.

[0014] Figure 2 for Figure 1 The image shows a three-dimensional view of the milling cutter.

[0015] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0016] Figure 4 and Figure 5 These are schematic diagrams of the cutter head from different perspectives in this utility model.

[0017] Figure 6 and Figure 7 These are front views of the first blade and the second blade in this utility model.

[0018] The reference numerals in the figure are as follows: 1. Cutter head; 11. Blade mounting part; 12. Chip removal groove; 13. First mounting groove; 131. First directional groove; 132. Second directional groove; 133. Side opening; 134. First clearance groove; 14. Second mounting groove; 140. V-shaped limiting wall; 141. Second clearance groove; 15. Mounting hole; 151. Keyway; 2. Blade; 21. First blade; 211. First cutting edge; 22. Second blade; 221. Second cutting edge. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0021] The structure of the milling cutter in this embodiment of the utility model is as follows: Figures 1 to 7 As shown, it includes a cutter head 1 and a blade 2. The cutter head 1 has multiple radially protruding blade mounting portions 11 spaced circumferentially around its outer periphery. Each blade mounting portion 11 has a blade mounting groove for mounting the blade 2. The blade 2 includes a first blade 21 and a second blade 22 of different shapes. The first blade 21 has at least two first cutting edges 211, wherein the first blade 21 is used for milling the side of the groove, and the second blade 22 is used for milling the bottom of the groove. The blade mounting groove includes a first mounting groove 13 for mounting the first blade 21 and a second mounting groove 14 for mounting the second blade 22. The first mounting groove 13 includes a first oriented groove 131 and a second oriented groove 132 of the same shape but with side openings 133 facing opposite directions along the axial direction of the cutter head 1. When the first blade 21 is inserted into the first oriented groove 131 or the second oriented groove 132, the corresponding first cutting edge 211 on it... 11 extends out from the side opening 133; the second blade 22 is installed in the second mounting groove 14, and has a second cutting edge 221 extending radially out of the second mounting groove 14 of the cutter head 1; in this embodiment, by setting a first directional groove 131 and a second directional groove 132 with the side opening 133 in opposite directions along the axial direction of the cutter head 1, the first blade 21 can be adapted to different directions for installation. When the first cutting edge 211 used in the first directional groove 131 is worn, it can be disassembled and reversed to be installed in the second directional groove 132 (at the same time, the first blade 21 originally installed in the second directional groove 132 can be swapped and installed in the first directional groove 131), and the intact first cutting edge on the other side can be used to continue working. This effectively extends the service life of a single first blade 21, significantly reduces the long-term consumption cost of the tool, and realizes the repeated and efficient use of the first blade 2.

[0022] Combination Figures 2 to 6As shown, the first blade 21 is an equilateral triangle, with the first cutting edge 211 formed on both sides of each corner. The first mounting groove 13 is a groove shape adapted to the shape of the first blade 21, and the inner end is provided with a first clearance groove 134. If the first cutting edge 211 actually applied to one side of the first blade 21 is damaged, the first cutting edge 211 on the same side below it is not damaged. Therefore, the first blade 21 can be removed from the first directional groove 131 and installed into the second directional groove 132, so that the undamaged first cutting edge 211 can continue to be used in the working position. Through the structural optimization in this application, a single first blade 21 can provide up to six effective first cutting edges 211, effectively enriching the available cutting resources of the blade 2. The first mounting groove 13 is adapted to be triangular and is provided with a first clearance groove 134 to avoid the corners on the inner side of the first blade 21, ensuring that the blade 2 is accurately and stably positioned. Furthermore, the first blade 21 is fixedly connected to the corresponding blade mounting part 11 by fastening screws.

[0023] See Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the second blade 22 is quadrilateral, with a second cutting edge 221 at each corner, meaning the quadrilateral second blade 22 has four second cutting edges 221; the second mounting groove 14 has a V-shaped limiting wall 140 and a second clearance groove 141 at its inner bottom end. When the second blade 22 is installed, the V-shaped limiting wall 140 can abut against the side of the second blade 22, thereby limiting its position and enhancing the stability of the second blade 22's positioning; furthermore, the second blade 22 is fixedly connected to the corresponding blade mounting part 11 by fastening screws.

[0024] See Figure 1 and Figure 2 The cutter head 1 has an axially penetrating mounting hole 15 at its center, and a keyway 151 is provided on the wall of the mounting hole 15. This realizes effective positioning and connection between the milling cutter and the machine tool spindle. The keyway 151 structure can reliably transmit torque, prevent slippage, and ensure the stability of power transmission of the milling cutter under high-speed and heavy-load cutting conditions.

[0025] In some embodiments, the edge of the blade mounting portion 11 is provided with a chip removal groove 12. The chip removal groove 12 can provide sufficient channels for the continuously generated chips during the cutting process, preventing chips from tangling and clogging. This protects the blade 2 and the machined surface of the workpiece, and ensures the continuity and reliability of the machining process.

[0026] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this invention still fall within the protection scope of this invention.

Claims

1. A milling cutter, comprising a cutter head (1) and a cutting insert (2), wherein the cutter head (1) is provided with a plurality of radially protruding cutting insert mounting portions (11) spaced apart along the outer periphery, and each cutting insert mounting portion (11) is provided with a cutting insert mounting groove for mounting a cutting insert (2); The blade (2) includes a first blade (21) and a second blade (22) of different shapes, wherein the first blade (21) has at least two first cutting edges (211); characterized in that: The blade mounting slot includes a first mounting slot (13) for mounting the first blade (21) and a second mounting slot (14) for mounting the second blade (22); the first mounting slot (13) includes a first azimuth slot (131) and a second azimuth slot (132) with the same shape but opposite directions of the side openings (133) along the axial direction of the cutter head (1); when the first blade (21) is inserted into the first azimuth slot (131) or the second azimuth slot (132), the corresponding first cutting edge (211) on it extends out from the side opening (133); the second blade (22) is mounted in the second mounting slot (14) and has a second cutting edge (221) that extends radially out of the second mounting slot (14) of the cutter head (1).

2. The milling cutter according to claim 1, characterized in that, The first blade (21) is an equilateral triangle, with the first cutting edge (211) formed on both sides of each corner. The first mounting groove (13) is adapted to the shape of the first blade (21), and the inner end is provided with a first clearance groove (134).

3. The milling cutter according to claim 1, characterized in that, The second blade (22) is quadrilateral, with a second cutting edge (221) at each corner; the second mounting groove (14) has a V-shaped limiting wall (140) and a second clearance groove (141) at the bottom.

4. The milling cutter according to claim 1, characterized in that, The first blade (21) and the second blade (22) are fixedly connected to the corresponding blade mounting part (11) by fastening screws.

5. The milling cutter according to claim 1, characterized in that, The cutter head (1) has an axially penetrating mounting hole (15) at its center, and a keyway (151) is provided on the wall of the mounting hole (15).

6. The milling cutter according to claim 1, characterized in that, The edge of the blade mounting part (11) is provided with a chip removal groove (12).

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