CN108723453B - End milling cutter with wave-shaped edge - Google Patents

Abstract

The invention discloses a corrugated edge end mill, which comprises a cutter body, an end edge rake face is arranged at the end of the cutter head, and a secondary blade is formed by the intersection of the end blade rake face and the end blade flank. It is a sine curve, the peaks and valleys of the adjacent auxiliary blades are staggered, the cutter head is provided with a tip portion, the tip portion is provided with a tip edge, the end of the cutter body is provided with a cutter body chamfer, and the cutter body chamfer is set to 45 In the present invention, the flank of the end blade is processed into a wave-shaped surface through a special milling fixture, so that the flank face of the end blade and the rake face of the end blade intersect to form a wave-shaped auxiliary blade. The speed of the machining allowance, on the premise of ensuring the rigidity and strength of the tool, makes the cutting process more stable, the cutting is light, the vibration is small, the chip removal is smooth, and the metal removal rate is high. It is more suitable for rough milling, especially for milling gas-cut steel plates. For workpieces with rough surfaces, high feed cutting is achieved.

Description

A corrugated edge end mill

technical field

The invention relates to the technical field of end mills, in particular to a corrugated edge end mill.

Background technique

Milling refers to the use of rotating multi-blade tools to cut workpieces for high-efficiency machining. When working, the tool rotates (main motion), the workpiece moves (for feed motion), the workpiece is fixed, and the rotating tool moves (while completing the main motion and feed motion). The machine tools used for milling include horizontal milling machines or vertical milling machines, as well as large-scale gantry milling machines. These machine tools can be ordinary machine tools or CNC machine tools, using rotating milling cutters as cutting tools. Milling is generally performed in It is suitable for machining planes, grooves, various forming surfaces (such as flower milling keys, gears and threads) and special surfaces of molds.

Milling is one of the most important machining methods. Due to its good versatility, it is widely used, and there are many types, shapes and functions of milling cutters. In the milling process, in order to ensure the efficiency and quality of the workpiece milling, it is necessary to use a rough milling cutter to initially mill the workpiece. The existing rough milling cutter has low milling efficiency when the workpiece is initially milled The blade is easy to cause damage, and at the same time, it is easy to damage the surface of the workpiece, which affects the processing speed of the workpiece and the service life of the milling cutter. In view of the above problems, the present invention is specially designed to solve.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a corrugated edge end mill to solve the above-mentioned problems in the background art.

To achieve the above object, the present invention provides the following technical solutions:

A corrugated edge end mill comprises a cutter body, a cutter head is arranged at the front of the cutter body, a main cutting edge is arranged on the cutter head, and the end of the cutter head is provided with a plurality of auxiliary cutters, the auxiliary cutters adopt a wave-shaped structure, and the auxiliary cutters It is spiral, the end of the cutter head is provided with an end blade flank, the end blade flank is a wavy surface, the end of the cutter head is provided with an end blade rake face, and the auxiliary blade is composed of the end blade rake face and the end blade rear. The blade faces intersect, the blade shape of the auxiliary blade is a sine curve, the peaks and valleys of the adjacent auxiliary blades are staggered, the blade head is provided with a blade tip, the blade tip is provided with a blade tip, and the inclination angle of the blade tip is 4 degrees. The tip of the tool is provided with a chamfer, the end of the cutter body is provided with a body chamfer, and the cutter body chamfer is set to 45 degrees.

As a further solution of the present invention: the diameter of the cutter body is 10 mm.

As a further solution of the present invention: the length of the cutter body is 100mm.

As a further solution of the present invention: the cutter body is made of cemented carbide material.

As a further solution of the present invention: the main cutting edges are provided with four.

As a further solution of the present invention: the auxiliary blade is provided with four.

As a further solution of the present invention: the helix angle of the secondary cutting edge is 25°.

As a further solution of the present invention: an involute transition is formed between the highest point and the lowest point of the waveform peak and valley of the secondary cutting edge.

As a further solution of the present invention: the height of the corrugated teeth of the secondary cutting edge is 1-2 mm.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention processes the end blade flank into a wave-shaped surface through a special milling fixture, so that the end blade flank and the end blade rake face intersect to form a wave-shaped pair. The cutting edge has high strength of the cutting edge, which can improve the speed of cutting the machining allowance of the workpiece blank. On the premise of ensuring the rigidity and strength of the tool, it can have sufficient chip space and reliable chip rolling, chip breaking and chip removal performance, and the cutting is light and fast. , small vibration, smooth chip removal, high metal removal rate, more suitable for rough milling, simple structure, scientific and reasonable, the diameter of the milling cutter can be smaller, and the roughing of small cavities is better, changing the distribution of cutting load, making the unit The cutting force of the area is reduced, the chip separation is good, and it is easier to cut into the workpiece. By increasing the cutting thickness of the rear wave edge, the slip distance of the cutting edge on the working surface can be reduced, and the tool durability and machining can be improved. The metal removal rate in the process ensures the processing quality of the workpiece, increases the service life of the milling cutter, and greatly reduces the periodicity of cutting force changes, making the cutting process more stable, light cutting, small vibration, smooth chip removal, and metal removal. High rate, more suitable for rough milling, especially suitable for milling workpieces with rough surfaces such as gas-cut steel plates, realizing high-feed cutting.

Description of drawings

Fig. 1 is the front view of the present invention;

Figure 2 is an end view of the present invention;

FIG. 3 is a schematic structural diagram of the present invention.

In the picture: cutter body 1, cutter head 2, auxiliary cutter edge 3.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figure 1-3, a corrugated edge end mill, including a cutter body 1, the diameter of the cutter body 1 is 10mm, the length of the cutter body 1 is 100mm, the cutter body 1 is made of cemented carbide material, and the front part of the cutter body 1 There is a cutter head 2, the cutter head 2 is provided with main cutting edges, the main cutting edge of the present invention is provided with four, the end of the cutter head 2 is provided with a number of auxiliary cutter edges 3, the auxiliary cutter edge 3 of the present invention is provided with four, the auxiliary cutter The blade 3 adopts a wavy structure, the secondary blade 3 is spiral, the helix angle of the secondary blade 3 is 25°, the end of the cutter head 2 is provided with an end blade flank, the end blade flank adopts a wavy surface, and the cutter head 2 The end is provided with an end blade rake face, the auxiliary blade 3 is formed by the intersection of the end blade rake face and the end blade flank, the blade shape of the auxiliary blade 3 is a sine curve, the peaks and valleys of the adjacent auxiliary blades are staggered, There is a knife tip part, a knife tip edge is provided on the knife tip part, the inclination angle of the knife tip edge is 4 degrees, the knife tip part is provided with a chamfer, the end of the knife body 1 is provided with a knife body chamfer, and the knife body 1 is chamfered Set to 45 degrees, the involute transition is between the highest point and the lowest point of the waveform peak and valley of the secondary blade 3, and the wave tooth height of the secondary blade 3 is 1-2mm.

When the present invention works, the cutter body 1 is made of cemented carbide material, which has high hardness, wear resistance, good strength and toughness, and is mainly used for cutting difficult-to-machine materials. The front part of the cutter body 1 is provided with a cutter head 2. 2 is mainly used for cutting, the cutter head 2 is provided with a main cutting edge, and the main cutting edge is arranged along the cylindrical body of the cutter body. The secondary blade 3 is formed by the intersection of the flank face of the end blade and the rake face of the end blade. The blade shape of the secondary blade 3 adopts a wavy shape similar to a sine curve, which can prevent the entire blade from participating in cutting, and can make narrow and long thin cutting into thick For short and narrow chips, the actual cutting thickness of the secondary cutting edge 3 is increased by three times, and the cut chips are narrow and thick, which reduces the degree of cutting deformation and improves the cutting formation, curling and elimination during the milling process. The cutting thickness is increased by about three times, and the cutting edge avoids the surface hardened layer and cuts into the workpiece. At the same time, due to the short length of the cutting edge in contact with the workpiece, the tool is not easy to vibrate, and can adapt to the processing conditions of large cutting amount. The peaks and valleys of the adjacent auxiliary cutting edges 3 are staggered by a certain distance, which can significantly reduce the cutting width. In the present invention, the flank face of the end blade is processed into a wavy surface through a special milling fixture, so that the flank face of the end blade and the rake face of the end blade intersect The wave-shaped secondary cutting edge 2 has high cutting edge strength, which can improve the speed of cutting the workpiece blank machining allowance. On the premise of ensuring the rigidity and strength of the tool, it can have sufficient chip space and reliable chip rolling, chip breaking, Chip removal performance, light cutting, small vibration, smooth chip removal, high metal removal rate, more suitable for rough milling, simple structure, scientific and reasonable, the diameter of the milling cutter can be smaller, and the roughing of small cavities is better, changing the cutting The distribution of the load reduces the cutting force per unit area, the chip separation is good, and it is easier to cut into the workpiece. By increasing the cutting thickness of the rear wave edge, the slip distance of the cutting edge on the working surface can be reduced during cutting, and the tool can be improved. Durability improves the metal removal rate during the machining process, ensures the machining quality of the workpiece, increases the service life of the milling cutter, and greatly reduces the periodicity of cutting force changes, making the cutting process more stable, light cutting, and low vibration. With smooth chip removal and high metal removal rate, it is more suitable for rough milling, especially for workpieces with rough surfaces such as gas-cut steel plates, and realizes high-feed cutting.

In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. a corrugated edge end mill, comprising a cutter body, is characterized in that, the cutter body front part is provided with a cutter head, the cutter head is provided with a main cutting edge, and the cutter head end is provided with several secondary cutter edges, and the secondary cutter edge adopts Wave-shaped structure, the secondary blade is spiral, the end of the cutter head is provided with an end blade flank, the end blade flank is wavy, and the end of the cutter head is provided with an end blade rake face, and the auxiliary blade is provided in front of the end blade. The blade face and the end blade flank intersect to form, the blade shape of the auxiliary blade is a sine curve, the peaks and valleys of the adjacent auxiliary blades are staggered, the blade head is provided with a blade tip, and the blade tip is provided with a blade tip. The inclination angle of the blade is 4 degrees, the tip of the tool is provided with a chamfer, the end of the cutter body is provided with a body chamfer, and the cutter body chamfer is set to 45 degrees. 2 . The corrugated edge end mill according to claim 1 , wherein the diameter of the cutter body is 10 mm. 3 . 3. The corrugated edge end mill according to claim 1, wherein the length of the cutter body is 100 mm. 4. The corrugated edge end mill according to claim 1, wherein the cutter body is made of cemented carbide material. 5. The corrugated edge end mill according to claim 1, wherein there are four main cutting edges. 6 . The wave-edge end mill according to claim 1 , wherein there are four secondary cutting edges. 7 . 7 . The wave-edge end mill according to claim 1 , wherein the helix angle of the secondary cutting edge is 25°. 8 . 8 . The wave edge end mill according to claim 1 , wherein an involute transition is formed between the highest point and the lowest point of the wave peak and valley of the secondary cutting edge. 9 . 9 . The corrugated edge end mill according to claim 1 , wherein the corrugated tooth height of the secondary cutting edge is 1-2 mm. 10 .

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