CN208067407U - A four-blade fillet powerful milling cutter - Google Patents

Abstract

The utility model discloses a powerful milling cutter of four-blade fillet, including handle of a knife and tool bit, the tool bit is equipped with four cutting edges that are central symmetry, the cutting edge is double circular arc shape and has long circular arc cutting part and short circular arc cutting part promptly, four long circular arc cutting parts are all crossed the center line of symmetry to the preceding transition of sword from the back of the edge, the back of the edge all is equipped with little spiral chip removal short groove between the sword of adjacent cutting edge is preceding, the inclination an on the inclined plane of chip removal short groove is more than or equal to 75 degrees soon. The utility model discloses the structural strength of cutting edge is stronger, can bear higher feed and give sword speed when milling process, and production efficiency is higher, and the cutting edge is more difficult to the rupture, and life is longer.

Description

A four-blade fillet powerful milling cutter

technical field

The utility model relates to machining equipment or tools, in particular to a powerful milling cutter with four blades and rounded corners.

Background technique

Existing milling cutters for machining, due to the structural design of the tooth shape, often cause the strength of the blade structure to be insufficient. During milling, the feed and feed speed cannot be too high. Its blade is easily broken, resulting in a short service life. Therefore, it is necessary to develop and design a new milling tool to overcome the deficiencies of the prior art.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide a blade with stronger structural strength, which can withstand higher feeding and feeding speeds during milling, the blade is less likely to break, and has a longer service life. The four-blade fillet powerful milling cutter.

The technical solution adopted by the utility model to solve the technical problem is: a four-blade fillet powerful milling cutter, including a handle and a cutter head, the cutter head is provided with four centrally symmetrical blades, and the blades are double The circular arc shape has a long arc edge and a short arc edge. The four long arc edges transition from the back of the blade to the front of the blade and all cross the center line of symmetry. The back of the blade and the front of the edge of the adjacent blade There are small helical fast chip removal notches between them, and the inclination angle a of the slope of the fast chip removal notches is greater than or equal to 75 degrees.

The beneficial effects of the utility model are: since it includes a knife handle and a knife head, the knife head is provided with four centrally symmetrical blades, and the blades are in the shape of double arcs, that is, they have a long arc edge and a short arc edge. The transition from the back of the blade to the front of the blade crosses the center line of symmetry, and the back of the blade and the front of the adjacent blade are provided with small helical fast chip removal grooves. The inclination angle a of the inclined surface of the fast chip removal groove is greater than or equal to 75 degrees. In this way, a strong S-shaped edge is formed, which is larger than the core end edge, and the tooth bottom becomes a fast-feed double arc tooth bottom, which greatly improves the structural strength of the blade. Chips can be removed quickly through the fast chip removal groove with an inclined angle a greater than or equal to 75 degrees, so the structural strength of the blade of the utility model is stronger, and it can withstand higher feed and feed speeds during milling. Production It is more efficient, the blade is less likely to break, and has a longer service life.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a side view structural diagram of the utility model.

Fig. 2 is a structural schematic view of the top of the cutter head overlooking the cutter head of the utility model.

FIG. 3 is an enlarged schematic diagram of the structure at point A in FIG. 1 .

Detailed ways

Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model is a four-edge fillet powerful milling cutter, which includes a handle 1 and a cutter head 2, and the cutter head is provided with four center-symmetrical blades 3, and the blades It is double-arc-shaped, that is, it has a long-arc blade 4 and a short-arc blade 5, and the four long-arc blades transition from the back side of the blade 6 to the front side of the blade 7 and all cross the symmetrical centerline 8, forming a strong S-shaped The edge is larger than the core end edge, and the bottom of the tooth becomes a fast-feed double arc tooth bottom, which greatly improves the structural strength of the blade, can feed the knife quickly, and improves production efficiency. The gap between the back of the blade and the front of the adjacent blade All are provided with small helical fast chip removal slots 9, the inclination angle a of the slope of the fast chip removal slots is greater than or equal to 75 degrees, which can quickly remove chips and improve production efficiency.

The utility model is suitable for roughing and semi-finishing machining of large-diameter cutters, can feed quickly with a large amount of cutting, has high processing efficiency, and has a longer service life of the cutter, which is 1.5 to 2 times that of ordinary cutters.

In addition, the utility model is not limited to the above-mentioned embodiments, as long as they achieve the technical effect of the utility model by basically the same means, they should all belong to the protection scope of the utility model.

Claims (1)

1. A four-blade fillet powerful milling cutter is characterized in that: it comprises a knife handle (1) and a cutter head (2), and the cutter head is provided with four center-symmetrical blades (3), and the blades are The double-arc shape has a long-arc blade (4) and a short-arc blade (5), and the four long-arc blades transition from the back of the blade (6) to the front of the blade (7) and pass through the center of symmetry line (8), the back of the blade and the front edge of the adjacent blade are provided with a small helical fast chip removal groove (9), and the inclination angle a of the slope of the fast chip removal groove is greater than or equal to 75 degrees .