High-performance large-feeding fillet head end mill

Abstract

The utility model discloses a high-performance large-feed fillet head end mill which comprises a cutter handle and a cutter head arranged at the front end of the cutter handle, a plurality of groups of U-shaped chip grooves are distributed on the side wall of the cutter head along the circumferential direction, and the groups of U-shaped chip grooves are spirally arranged on the side wall of the cutter head in an unequal spiral shape. A cutting edge is formed on the groove wall of the U-shaped chip groove, a chip breaking front angle is arranged on the groove front tool face of the U-shaped chip groove, and a chip discharging round angle is arranged at the position, located at the U-shaped chip groove, of the front end of the tool bit. According to the high-performance large-feeding fillet head end mill provided by the utility model, the U-shaped chip removal groove is spirally formed in the side wall of the cutter head in an unequal spiral shape, so that the chip removal efficiency is improved, and the breakage and abrasion of the cutter caused by vibration of the cutter are reduced; the chip breaking and separating effects are achieved through the chip breaking front angle on the U-shaped chip discharging groove, the efficient chip discharging fillet is designed to be the positive front angle, scream caused by large resistance is greatly reduced when the corner is machined, and the rigidity and cutting performance of the cutter are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a milling cutter technical field, specifically a high performance big feeding round head end end mill. BACKGROUND

[0002] The end mill is the most used milling cutter on numerical control machine tool, and is mainly used for plane milling, groove milling, step surface milling and profiling milling. The conventional end mill has general cutting performance and poor chip removal capacity, so that the machining efficiency is low and the workpiece quality is not high in the process of aluminum machining, mold machining and titanium alloy machining. SUMMARY

[0003] The utility model discloses a high performance big feeding round head end mill which is used to solve the above problems.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A high performance big feeding round head end mill, comprising a handle and a head set at the front end of the handle, the side wall of the head is circumferentially distributed with several groups of U-shaped chip removal grooves, and each group of the U-shaped chip removal grooves is spirally arranged on the side wall of the head in unequal helix, the groove wall of the U-shaped chip removal groove forms a cutting edge, the rake face of the U-shaped chip removal groove is provided with a chip breaking rake angle, and the front end of the head and the position of the U-shaped chip removal groove are provided with a chip removal round corner.

[0006] Preferably, the U-shaped chip removal groove and the cutting edge both comprise four groups of unequal distribution.

[0007] Preferably, the front end of the cutting edge is provided with a double R angle.

[0008] Preferably, the handle and the head are cast into shape by using one or more materials of high speed steel, hard alloy, CBN and PCD.

[0009] After the above technical scheme is adopted, the utility model has the following beneficial effects:

[0010] The utility model provides a high performance big feeding round head end mill, the U-shaped chip removal groove is spirally arranged on the side wall of the head in unequal helix, improves the chip removal efficiency, reduces the tool vibration and causes the tool to collapse and wear, realizes the chip breaking and chip dividing through the chip breaking rake angle on the U-shaped chip removal groove, the efficient chip removal round corner adopts the positive rake angle design, greatly reduces the screaming caused by the large resistance when machining the corner, and greatly improves the rigidity and cutting performance of the tool. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a structural schematic view of the utility model;

[0012] Fig. 2Another angle structure schematic view of the utility model;

[0013] Fig. 3 The utility model discloses a plan view. Specific embodiments

[0014] In order to make the utility model's purpose, technical scheme and advantage more clearly, following combining with the drawing and example, the utility model is further detailedly explained.The specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0015] Embodiment

[0016] Please refer to Figs. 1 to 3 The utility model discloses a high performance big feeding round head end milling cutter, including handle 1 and setting the head 2 of handle 1 front end, the lateral wall of head 2 is distributed with several groups U type chip removal groove 21 along the circumference, and each group U type chip removal groove 21 is set in the lateral wall of head 2 and is unequal spiral, and the groove wall of U type chip removal groove 21 forms cutting edge 22, and the rake face of U type chip removal groove 21 is provided with chip breaking rake angle 23 and realizes chip breaking and divides the effect, and the front end of head 2 and the position of U type chip removal groove 21 are provided with the chip removal round angle 24.

[0017] U type chip removal groove 21 and cutting edge 22 all include four groups of unequal distribution.

[0018] The front end of cutting edge 22 is provided with double R angle 25, which enhances the front end rigidity, and greatly improves the chip dividing performance when processing, and has good anti-collapse capacity.

[0019] Chip removal round angle 24 adopts high efficiency positive rake angle design, and greatly reduces the screaming caused by large resistance when processing the corner.

[0020] Handle 1 and head 2 adopt one or more materials of high speed steel, hard alloy, CBN and PCD to be cast into shape.

[0021] The above described, only for the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the utility model disclosed technical range, can easily think of the change or replacement, all should be covered in the protection scope of the utility model.The protection scope of the utility model should be limited by the protection scope of the claims.

Claims

1. A high performance large feed bullnose end mill characterized by: The tool shank and the tool head arranged at the front end of the tool shank, the side wall of the tool head is circumferentially distributed with several groups of U-shaped chip flutes, and each group of the U-shaped chip flutes is arranged in the form of unequal spirals on the side wall of the tool head, the groove wall of the U-shaped chip flute is formed with a cutting edge, the rake face of the U-shaped chip flute is provided with a chip breaking rake angle, and the front end of the tool head and the position of the U-shaped chip flute are provided with a chip removal round corner.

2. A high performance large feed bull nose end mill according to claim 1, wherein: The U-shaped chip flutes and the cutting edges all include four groups of unequal distribution.

3. A high performance large feed bull nose end mill according to claim 2, wherein: The front end of the cutting edge is provided with a double R angle.

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