Novel mcd helical milling cutter

Abstract

The utility model discloses a novel MCD spiral milling cutter belongs to cutter technical field, including the cutter bar and the MCD spiral tool bit of lower end, the outer diameter of spiral tool bit is not greater than the outer diameter of cutter bar, the end of spiral tool bit is radially equipped with n end edges, and the outer circular surface of spiral tool head is equipped with n spiral edges, and the spiral chip groove is formed between two adjacent spiral edges, n spiral edges all are equipped with the staggered blade surface, and the staggered blade surface on two adjacent spiral edges is axially staggered arrangement. The utility model discloses a spiral tool bit of welding fixed MCD material is arranged at the lower end of cutter bar, utilizes the multiple end edges of spiral tool head end and the multiple spiral edges of all around and processes the product, can improve product surface brightness, improves processing efficiency simultaneously, prolongs the service life of cutter, improves the performance of chip removal with the spiral chip groove of all around, utilizes the staggered blade surface on spiral edge can make spiral edge staggered arrangement, can make the surface of processing no knife line, further improves product processing surface quality.

Description

Technical Field

[0001] This utility model belongs to the field of cutting tool technology, and specifically relates to a novel MCD spiral end mill. Background Technology

[0002] Currently, MCD cutting tools possess extremely high hardness and wear resistance, producing products with high precision, good surface quality, and long tool life, making them widely used in the precision machining of metal products. Existing MCD end mills utilize slotted, welded plate-type small-diameter tool holders, resulting in very low machining efficiency and lifespan for individual cutting edges. Furthermore, the high resistance of straight flutes during single-edge machining negatively impacts the surface quality. Utility Model Content

[0003] To address the above problems, this utility model provides a novel MCD spiral end mill.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A novel MCD spiral end mill includes a shank and a spiral cutter head at its lower end. The spiral cutter head is made of MCD material, and the outer diameter of the spiral cutter head is not greater than the outer diameter of the shank. The end of the spiral cutter head is provided with n end cutting edges radially, and the outer circumference of the spiral cutter head is provided with n spiral cutting edges, with a spiral chip removal groove formed between two adjacent spiral cutting edges. Each of the n spiral cutting edges is provided with a staggered cutting surface, and the staggered cutting surfaces on two adjacent spiral cutting edges are axially staggered.

[0006] Furthermore, the number n of the spiral blades and end blades is four.

[0007] Furthermore, the staggered surfaces on the four spiral blades are two first staggered surfaces and two second staggered surfaces. The two first staggered surfaces are respectively located at the ends of two spiral blades, and the two second staggered surfaces are respectively located in the middle of the other two spiral blades. The edges of the first staggered surfaces and the two second staggered surfaces are respectively provided with spiral blades.

[0008] Furthermore, the length of the first misaligned edge surface is greater than the length of the second misaligned edge surface.

[0009] Furthermore, the end face of the spiral cutter head is provided with four straight chip removal grooves in the radial direction, and the four straight chip removal grooves are arranged adjacent to the four end cutting edges respectively; the straight chip removal grooves are inclined outward relative to the end cutting edges adjacent to them.

[0010] Furthermore, the rear side of the spiral blade is successively composed of a first spiral back face and a second spiral back face, the first spiral back face having an angle of 10° with the spiral blade, and the second spiral back face being a concave spiral surface.

[0011] Furthermore, the rear side of the end blade is successively formed by a first rear cutting surface and a second rear cutting surface, with the second rear cutting surface inclined outward relative to the first rear cutting surface; the angle between the end blade and the first rear cutting surface is 6°, and the angle between the first rear cutting surface and the second rear cutting surface is 15°.

[0012] Furthermore, the helix angle of the spiral cutter head is 37°.

[0013] Furthermore, the spiral cutter head is welded to the cutter shank.

[0014] The technological advancements achieved by this invention compared to existing technologies are as follows:

[0015] This invention involves welding and fixing an MCD material spiral cutter head to the lower end of the cutter shank. By utilizing multiple end edges and multiple spiral edges around the spiral cutter head to process products, the surface gloss of the products can be improved, processing efficiency can be increased, and the tool life can be extended. The surrounding spiral chip removal grooves improve chip removal performance, and the staggered cutting surfaces on the spiral edges allow the spiral edges to be arranged in an alternating manner, resulting in a tool mark-free surface and further improving the surface quality of the processed products. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the structure of a novel MCD spiral end mill provided in this embodiment of the present invention;

[0019] Figure 2 This is a top view of the end of the spiral cutter head in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the spiral cutter head in an embodiment of this utility model.

[0021] In the picture:

[0022] 1-Tool holder; 2-Helical cutter head; 3-End cutting edge; 31-First flank face; 32-Second flank face; 4-Helical cutting edge; 41-First helical flank face; 42-Second helical flank face; 5-First offset cutting edge; 6-Second offset cutting edge; 7-Straight chip groove. Detailed Implementation

[0023] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, a novel MCD spiral end mill includes a tool holder 1 and a spiral cutter head 2 at its lower end. The spiral cutter head 2 is made of MCD material, and its outer diameter is no greater than that of the tool holder 1. The spiral cutter head 2 has n end cutting edges 3 radially arranged at its end, and n spiral cutting edges 4 arranged on its outer circumference. A spiral chip removal groove 5 is formed between two adjacent spiral cutting edges 4, which improves chip removal performance. Each of the n spiral cutting edges 4 has a staggered cutting surface, and the staggered cutting surfaces on two adjacent spiral cutting edges 4 are axially staggered. Machining products with multiple end cutting edges and multiple spiral cutting edges can improve the surface gloss of the product, while also increasing machining efficiency and extending tool life. The staggered cutting surfaces on the spiral cutting edges allow for a staggered arrangement of the spiral cutting edges, resulting in a tool mark-free machined surface and further improving the surface quality of the machined product.

[0025] As a preferred structure, such as Figure 2 As shown, the number n of the spiral blades 4 and end blades 3 is four. The staggered surfaces on the four spiral blades 4 are two first staggered surfaces 5 and two second staggered surfaces 6. The two first staggered surfaces 5 are respectively located at the ends of two spiral blades 4, and the two second staggered surfaces 6 are respectively located in the middle of the other two spiral blades 4. Spiral blades are correspondingly provided at the edges of the first staggered surfaces 5 and the two second staggered surfaces 6. The length of the first staggered surface 5 is greater than the length of the second staggered surface 6. The spiral blades on the same spiral groove sidewall are arranged in an alternating pattern, with no rounded corners at the intersection points. This staggered tooth forming tool has good profile accuracy, no tool marks on the machined surface, and improves the surface quality of the product.

[0026] In specific embodiments of this utility model, such as Figure 1 , 2 As shown, the helical cutter head 2 has four radially arranged straight chip removal grooves 7 on its end face, which are respectively arranged adjacent to the four end cutting edges 3; the straight chip removal grooves 7 are inclined outward relative to the adjacent end cutting edges 3. The straight chip removal grooves can remove chips in time, avoid cutting chips from remaining on the machined surface, and further improve the machining quality.

[0027] In specific design, such as Figure 1 As shown, the helical cutter head 2 has a helix angle of 37°. The rear side of the helical cutting edge 4 consists of a first helical flank face 41 and a second helical flank face 42, with the first helical flank face 41 forming an angle of 10° with the helical cutting edge 4. The second helical flank face 42 is a concave helical surface. Utilizing the first helical flank face 41 and the second helical flank face 42 can reduce cutting resistance, and timely chip removal through the helical chip removal groove can improve machining quality.

[0028] like Figure 2As shown, the rear side of the end cutting edge 3 is successively formed by a first flank face 31 and a second flank face 32, with the second flank face 32 inclined outward relative to the first flank face 31. The angle between the end cutting edge 3 and the first flank face 31 is 6°, and the angle between the first flank face 31 and the second flank face 32 is 15°. Similarly, utilizing the first flank face 31 and the second flank face 32 can reduce cutting resistance, and the participation of multiple end cutting edges in machining can improve cutting efficiency and surface brightness, thereby improving machining quality.

[0029] In actual manufacturing, the spiral cutter head 2 is welded to the cutter shank 1. The cutter shank is made of tungsten steel, and the machined MCD spiral cutter head is welded and fixed to the end of the cutter shank.

[0030] In summary, this invention boasts advantages such as simple and compact structure, high processing efficiency, and excellent surface quality. By employing an MCD spiral cutter head for machining products, multiple spiral blades and end blades are used for simultaneous cutting. Spiral and straight chip removal grooves facilitate timely chip removal, improving the surface finish and extending tool life, thus significantly increasing processing efficiency and making it suitable for mass production. The staggered spiral blades on the spiral cutter head provide excellent contour, resulting in a tool-free surface. The low resistance experienced by the spiral cutter head during machining further enhances surface smoothness and improves overall product quality.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A novel MCD spiral end mill, characterized in that: The tool includes a tool holder and a spiral cutter head at its lower end. The spiral cutter head is made of MCD material, and the outer diameter of the spiral cutter head is not greater than the outer diameter of the tool holder. The end of the spiral cutter head is provided with n end edges radially, and the outer circular surface of the spiral cutter head is provided with n spiral blades, with a spiral chip removal groove formed between two adjacent spiral blades. Each of the n spiral blades is provided with a staggered cutting surface, and the staggered cutting surfaces on two adjacent spiral blades are axially staggered.

2. The novel MCD spiral end mill according to claim 1, characterized in that: The number of spiral blades and end blades, n, is four.

3. A novel MCD spiral end mill according to claim 2, characterized in that: The four spiral blades have two first staggered blade surfaces and two second staggered blade surfaces. The two first staggered blade surfaces are respectively located at the ends of two spiral blades, and the two second staggered blade surfaces are respectively located in the middle of the other two spiral blades. The edges of the first staggered blade surfaces and the two second staggered blade surfaces are respectively provided with spiral blades.

4. A novel MCD spiral end mill according to claim 3, characterized in that: The length of the first misaligned edge surface is greater than the length of the second misaligned edge surface.

5. A novel MCD spiral end mill according to claim 2, characterized in that: The end face of the spiral cutter head is provided with four straight chip removal grooves in the radial direction, and the four straight chip removal grooves are arranged adjacent to the four end cutting edges respectively; the straight chip removal grooves are inclined outward relative to the end cutting edges adjacent to them.

6. A novel MCD spiral end mill according to claim 1, characterized in that: The rear side of the spiral blade is composed of a first spiral back face and a second spiral back face, with the first spiral back face having an angle of 10° with the spiral blade, and the second spiral back face being a concave spiral surface.

7. A novel MCD spiral end mill according to claim 1, characterized in that: The rear side of the end cutting edge is formed by a first rear cutting surface and a second rear cutting surface, with the second rear cutting surface inclined outward relative to the first rear cutting surface; the angle between the end cutting edge and the first rear cutting surface is 6°, and the angle between the first rear cutting surface and the second rear cutting surface is 15°.

8. A novel MCD spiral end mill according to claim 1, characterized in that: The helix angle of the spiral cutter head is 37°.

9. A novel MCD helical end mill according to any one of claims 1-8, characterized in that: The spiral cutter head is welded to the cutter shank.

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