Large-diameter carbide saw blade end mills with shaped cutting edges

Abstract

This utility model relates to a large-diameter carbide saw blade end mill with a shaped cutting edge, comprising a cutter shank and a cutter head. The cutter shank and cutter head are integrally formed carbide components. The cutter head is circular, and the cutter shank is connected to the center of the cutter head. Cutting sections are evenly distributed on the outer circumference of the cutter head, and chip removal grooves are provided between the cutting sections. The cutting sections are serrated, and each cutting section has a first cutting edge and a second cutting edge on its outer end face. The first cutting edge is connected to the second cutting edge, with the first cutting edge located near the cutter shank and the second cutting edge located near the bottom surface of the cutter head. A V-shaped groove is formed between the first and second cutting edges. The chip removal grooves are left-hand spiral chip removal grooves, and the first and second cutting edges are right-hand spiral cutting edges. This utility model's saw blade end mill can perform large-diameter surface machining on workpieces; the right-hand spiral cutting edge design improves the cutting performance of the cutter head.

Description

Technical Field

[0001] This utility model relates to the field of milling cutters, and in particular to a large-diameter carbide saw blade milling cutter with a shaped cutting edge. Background Technology

[0002] A saw blade end mill is a cutting tool used to machine grooves on a workpiece. A saw blade end mill typically includes a shank and a cutter head. Cutting teeth are distributed on the outer circumference of the cutter head, and these teeth cut the inner or outer surface of the workpiece. In the prior art, one type of saw blade end mill has a straight cutting edge, which is inclined at a certain angle to the axis of the cutter head, and the machined groove is an annular groove. Another type of saw blade end mill has an arc-shaped cutting edge, such as a semi-circle or a quarter arc, and the machined groove is an arc-shaped groove. For example, patent CN106270693B discloses a T-type end mill, including a shank, a necking bar, and a cutting head. The cutting head includes a main cutting edge, a secondary cutting edge, a rectangular boss, and a chip removal groove. The main and secondary cutting edges rotate in a left-handed, opposite-handed helical pattern, and the angle between the main and secondary cutting edges is rounded.

[0003] The disadvantages of existing saw blade end mills are that they can only process simple grooves, such as annular grooves or arc grooves, when machining grooves; and the existing T-shaped end mills have a small diameter difference between the cutter shank and the cutter head, with the cutter head usually having a small radius, and the diameter of the cutter head is only 1.5-2 times the diameter of the cutter shank; moreover, the cutting edge of these saw blade end mills wears out a lot during cutting, which affects the service life of the saw blade end mills. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the current saw blade end mills and to provide a carbide saw blade end mill with a large diameter forming cutting edge.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A large-diameter carbide saw blade end mill with a shaped cutting edge includes a cutter shank and a cutter head. The cutter shank and cutter head are integrally formed carbide parts. The cutter head is circular, and the cutter shank is connected to the middle of the cutter head. Cutting sections are evenly distributed on the outer circumferential surface of the cutter head, and chip removal grooves are provided between the cutting sections. The cutting sections are serrated, and each cutting section has a first cutting edge and a second cutting edge on its outer end face. The first cutting edge is connected to the second cutting edge. The first cutting edge is located on the side closer to the cutter shank, and the second cutting edge is located on the side closer to the bottom surface of the cutter head. A V-shaped groove is formed between the first cutting edge and the second cutting edge. The chip removal groove is a left-hand spiral chip removal groove, and the first and second cutting edges are right-hand spiral cutting edges.

[0006] In the above scheme, the first cutting edge includes a first cutting segment and a second cutting segment. The first cutting segment is located on the outer end face, and the second cutting segment extends radially inward from the outer end face along the edge of the V-groove. The rear angle of the first cutting segment is 5°-15°. With this arrangement, the first and second cutting segments on the first cutting edge can cut the workpiece separately, and in combination with the second cutting edge, machine the desired shape on the workpiece.

[0007] In the above scheme, the second cutting edge is a straight cutting edge, and the second cutting edge and the second cutting segment are set at an angle of 30°-45°. With this setting, a V-shaped protrusion can be machined between the first cutting edge and the second cutting edge.

[0008] In the above scheme, the diameter of the cutter head is 3-5 times the diameter of the cutter shank. This configuration allows for the machining of large-diameter shapes on the workpiece.

[0009] This invention offers several advantages: The large-diameter carbide saw blade end mill with a shaped cutting edge features a shank and cutter head formed from a single piece of carbide. Compared to a T-shaped end mill where the cutter head and shank are welded together, this design provides a stronger connection, enhancing the overall performance of the saw blade end mill and enabling it to machine large-diameter surfaces on workpieces. Furthermore, the chip evacuation groove is a left-hand spiral, while the first and second cutting edges are right-hand spirals. This design allows chips to be smoothly discharged through the chip evacuation groove during left-hand spiral rotation of the cutter head. The right-hand spiral cutting edge design also reduces cutting resistance and improves the cutting performance of the cutter head. Finally, this large-diameter carbide saw blade end mill with a shaped cutting edge can machine not only simple annular or arc-shaped grooves on workpieces but also, depending on the design of the cutting edges, various complex surfaces with multiple faces, thus meeting a wider range of application requirements. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the large-diameter carbide saw blade milling cutter with a shaped cutting edge according to this utility model.

[0011] Figure 2 This is a top view of the large-diameter carbide saw blade end mill of this utility model.

[0012] Figure 3 This is a schematic diagram illustrating the application of the large-diameter carbide saw blade milling cutter with a shaped cutting edge according to this utility model.

[0013] The reference numerals in the figure are as follows: tool holder 1, tool head 2, cutting section 3, chip removal groove 4, first cutting edge 5, first cutting section 51, second cutting section 52, second cutting edge 6, V-groove 7. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] like Figure 1-3 As shown, the large-diameter carbide saw blade end mill of this utility model includes a cutter shank 1 and a cutter head 2, wherein the cutter shank 1 and the cutter head 2 are integrally formed carbide parts.

[0016] The tool holder 1 is a cylindrical tool holder, and the diameter of the tool holder 1 is set as needed.

[0017] The cutter head 2 is a circular cutter head, and the cutter shank 1 is connected to the middle of the cutter head 2. Preferably, the diameter of the cutter head 2 is 3-5 times the diameter of the cutter shank 1. With this arrangement, large-diameter shapes can be machined on the workpiece.

[0018] Cutting sections 3 are evenly distributed on the outer circumferential surface of the cutter head 2. Chip removal grooves 4 are provided between the cutting sections 3. The chip removal grooves 4 are left-hand spiral chip removal grooves. The cutting sections 3 are sawtooth-shaped. Each cutting section 3 has a first cutting edge 5 and a second cutting edge 6 on its outer end face. The first cutting edge 5 and the second cutting edge 6 are connected. The first cutting edge 5 is located on the side closer to the tool holder, and the second cutting edge 6 is located on the side closer to the bottom surface of the cutter head 2. A V-shaped groove 7 is formed between the first cutting edge 5 and the second cutting edge 6. The first cutting edge 5 and the second cutting edge 6 are right-hand spiral cutting edges.

[0019] The shapes of the first cutting edge 5 and the second cutting edge 6 can be designed as needed. For example, the first cutting edge 5 includes a first cutting section 51 and a second cutting section 52. The first cutting section 51 is located on the outer end face, and the second cutting section 52 extends radially inward from the outer end face along the edge of the V-groove 7. The clearance angle of the rear side of the first cutting section 51 is 5°-15°. With this arrangement, the first cutting section 51 and the second cutting section 52 on the first cutting edge 5 can cut the workpiece separately, and in combination with the second cutting edge 6, the desired shape can be machined on the workpiece.

[0020] The second cutting edge 6 is a straight cutting edge, and the second cutting edge 6 is set at an angle of 30°-45° to the second cutting section 52. With this setting, a V-shaped protrusion can be machined between the first cutting edge 5 and the second cutting edge 6.

[0021] This utility model relates to a large-diameter carbide saw blade end mill with a shaped cutting edge. During use, the cutter shank can be clamped and fixed on a machining center or milling machine. When machining a workpiece, the second cutting edge at the lower part of the cutter head gradually contacts the workpiece first, performing cutting. Then, with slow feed, the first cutting edge gradually contacts the workpiece, performing cutting to create the desired shape.

[0022] This utility model of a large-diameter carbide saw blade end mill with a shaped cutting edge can not only machine simple annular or arc-shaped grooves on workpieces, but also machine various complex surfaces including multiple surfaces on workpieces according to the design structure of the cutting edge, so as to meet more application needs.

[0023] This utility model discloses a large-diameter carbide saw blade end mill with a shaped cutting edge. The cutter shank and cutter head are integrally formed carbide parts. Compared with T-shaped end mills where the cutter head and cutter shank are welded together, the connection strength between the cutter shank and cutter head is stronger, which can improve the overall performance of the saw blade end mill and enable it to perform large-diameter surface machining on the workpiece.

[0024] This utility model discloses a large-diameter carbide saw blade end mill with a shaped cutting edge. The chip removal groove is a left-hand spiral chip removal groove, and the first and second cutting edges are right-hand spiral cutting edges. With this configuration, when the cutter head rotates left-hand spiral to process the workpiece, the cutting chips can be smoothly discharged through the chip removal groove. The right-hand spiral cutting edge configuration means that each cutting edge is staggered vertically from the next cutting edge in the axial direction, which reduces the cutting resistance of the cutting edge and improves the cutting performance of the cutter head.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-diameter carbide saw blade end mill with a shaped cutting edge, characterized in that, The tool includes a tool holder and a cutter head, both of which are integrally formed from cemented carbide. The cutter head is circular, and the tool holder is connected to the center of the cutter head. Cutting sections are evenly distributed on the outer circumference of the cutter head, and chip removal grooves are provided between the cutting sections. The cutting sections are serrated, and each cutting section has a first cutting edge and a second cutting edge on its outer end face. The first cutting edge and the second cutting edge are connected. The first cutting edge is located on the side closer to the tool holder, and the second cutting edge is located on the side closer to the bottom surface of the cutter head. A V-shaped groove is formed between the first cutting edge and the second cutting edge. The chip removal groove is a left-hand spiral chip removal groove, and the first and second cutting edges are right-hand spiral cutting edges.

2. The large-diameter carbide saw blade end mill with a shaped cutting edge according to claim 1, characterized in that: The first cutting edge includes a first cutting segment and a second cutting segment. The first cutting segment is located on the outer end face, and the second cutting segment extends radially inward from the outer end face along the edge of the V-groove. The rear angle of the first cutting segment is 5°-15°.

3. The large-diameter carbide saw blade end mill with a shaped cutting edge according to claim 2, characterized in that: The second cutting edge is a straight cutting edge, and the second cutting edge is set at an angle of 30°-45° to the second cutting segment.

4. The large-diameter carbide saw blade end mill with a shaped cutting edge according to claim 1, characterized in that: The diameter of the cutter head is 3-5 times the diameter of the cutter bar.

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