Forming milling cutter with chip removal function

Abstract

The utility model relates to the technical field of milling cutters, and discloses a forming milling cutter with a chip removal function, which comprises a cutter body, a cutter head is arranged at the top of the cutter body, six chip removal grooves with spiral groove structures are uniformly arranged on the surface of the cutter head, a blade is arranged between every two adjacent chip removal grooves, and the cutter head is arranged on the cutter body. The six cutting edges are evenly arranged corresponding to the chip grooves, the unequally-divided dual-angle design of the chip grooves can effectively improve the machining efficiency and the utilization rate, meanwhile, the machining cost is effectively saved, the section of each chip groove is designed to be of a U-shaped structure, compared with a traditional straight section, the capacity space is larger, more waste chips can be contained, and the service life of the cutter is prolonged. The corrugated edge structure design of the corrugated section enables waste chips in the machining process to be cut into extremely small fragments, so that the waste chips can be smoothly guided out of the chip grooves, the cutting force is effectively reduced through the corrugated edge structure, the vibration amplitude is reduced, the machining efficiency is high, the tangential force in the machining process can be reduced through the inner arc notch and the negative rake angle, and abrasion is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, and more specifically to a formed milling cutter with a chip removal function. Background Art

[0002] A milling cutter is a rotating tool with one or more cutting teeth used for milling. During operation, each cutting tooth intermittently cuts off the surplus of the workpiece in turn. Milling cutters are mainly used for machining planes, steps, grooves, formed surfaces, and cutting workpieces on milling machines.

[0003] Deficiencies of the prior art: Under the prior art, when the milling cutter mills the periphery of the workpiece, the effect is mostly good and the chip removal is relatively smooth. However, when machining internal holes, the chip removal effect of the existing milling cutter is still insufficient. The waste chips generated by the milling cutter may be longer than the length of the chip removal groove. After these long waste chips are tightly stacked, they will adhere to the periphery of the workpiece. If the waste chips are not separated in time, it will greatly affect the machining quality. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a formed milling cutter with a chip removal function to solve the problems existing in the above background art.

[0005] The utility model provides the following technical solution: A formed milling cutter with a chip removal function includes a cutter body. A cutter head is arranged at the top of the cutter body. Chip removal grooves in a spiral groove body structure are formed on the surface of the cutter head. Six chip removal grooves are evenly arranged, and cutting edges are arranged between two adjacent chip removal grooves. Six cutting edges corresponding to the chip removal grooves are evenly arranged.

[0006] Preferably, the chip removal grooves are divided into a first chip removal section and a second chip removal section. Three of each are provided for the first chip removal section and the second chip removal section. The first chip removal section and the second chip removal section are arranged alternately. The spiral angle of the first chip removal section is 40.5 degrees, and the spiral angle of the second chip removal section is 39.5 degrees. The cross-section of the chip removal groove is a U-shaped structure.

[0007] Preferably, the cutting edges are divided into a corrugated section and a smooth section. Straight corrugated lines are densely arranged on the corrugated section. Four of the corrugated sections are provided, and two of the smooth sections are provided.

[0008] Preferably, an inner arc notch is formed at the top of the cutting edge, and a negative rake angle is arranged at the edge of the inner arc notch.

[0009] Preferably, a nano coating is arranged on the surface of the cutter head.

[0010] Technical effects and advantages of the utility model:

[0011] The chip removal groove of the present utility model is divided into a first chip removal section and a second chip removal section, which are arranged alternately. The spiral angle of the first chip removal section is 40.5 degrees, and the spiral angle of the second chip removal section is 39.5 degrees. The dual-angle design with unequal division of the chip removal groove can effectively improve the processing efficiency and operation rate, while also effectively saving the processing cost. In addition, the cross-section of the chip removal groove is designed as a U-shaped structure, which has a larger capacity space compared with the traditional straight cross-section, can accommodate more waste chips, and makes the chip removal smoother. Besides, the cutting edge is divided into a corrugated section and a smooth section. Straight corrugated lines are densely arranged on the corrugated section. The wave-edge structure design of the corrugated section enables the waste chips in the processing process to be cut into extremely small fragments, so that they can be smoothly exported from the chip removal groove. The wave-edge structure also effectively reduces the cutting force and the vibration amplitude, and has high processing efficiency. An inner arc notch is opened at the top of the cutting edge, and a negative rake angle is arranged at the edge of the inner arc notch. The inner arc notch and the negative rake angle can reduce the tangential force in the processing process, effectively reduce the wear, and improve the working efficiency and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0013] Figure 2 It is a front view of the present utility model.

[0014] Figure 3 It is a top view of the present utility model.

[0015] Reference numerals are: 1, tool body; 2, tool tip; 21, chip removal groove; 21a, first chip removal section; 21b, second chip removal section; 22, cutting edge; 22a, corrugated section; 22b, smooth section; 23, inner arc notch; 24, negative rake angle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. In addition, the forms of the respective structures described in the following embodiments are merely examples, and a forming milling cutter with a chip removal function related to the present utility model is not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0017] The present utility model provides a forming milling cutter with a chip removal function, which includes a tool body 1. A tool tip 2 is arranged at the top of the tool body 1. A chip removal groove 21 in the form of a spiral groove body is opened on the surface of the tool tip 2. Six chip removal grooves 21 are evenly arranged, and a cutting edge 22 is arranged between two adjacent chip removal grooves 21. Six cutting edges 22 corresponding to the chip removal grooves 21 are evenly arranged.

[0018] Furthermore, the chip evacuation groove 21 is divided into a first chip evacuation section 21a and a second chip evacuation section 21b. There are three of each of the first chip evacuation section 21a and the second chip evacuation section 21b, and the first chip evacuation section 21a and the second chip evacuation section 21b are arranged alternately. The helix angle of the first chip evacuation section 21a is 40.5 degrees, and the helix angle of the second chip evacuation section 21b is 39.5 degrees. The double-angle design with unequal division of the chip evacuation groove 21 can effectively improve the processing efficiency and operation rate, and also effectively save the processing cost. Moreover, the cross-section of the chip evacuation groove 21 is designed as a U-shaped structure, which has a larger capacity space compared with the traditional straight cross-section, can accommodate more waste chips, and also makes the chip discharge smoother.

[0019] Furthermore, the cutting edge 22 is divided into a corrugated section 22a and a smooth section 22b. Straight corrugated patterns are densely arranged on the corrugated section 22a. There are four corrugated sections 22a and two smooth sections 22b. The wave-edge structure design of the corrugated section 22a enables the waste chips in the processing process to be cut into extremely small fragments, so that they can be smoothly discharged from the chip evacuation groove 21. In addition, the wave-edge structure effectively reduces the cutting force, reduces the vibration amplitude, and has high processing efficiency and excellent surface processing quality.

[0020] Furthermore, an inner arc notch 23 is opened at the top of the cutting edge 22, and a negative rake angle 24 is provided at the edge of the inner arc notch 23. The angle of the negative rake angle 24 is between -5 degrees and -15 degrees. The inner arc notch 23 and the negative rake angle 24 can reduce the tangential force in the processing process, effectively reduce the wear, and improve the working efficiency and processing accuracy.

[0021] Furthermore, a nano coating film is provided on the surface of the tool tip 2. The nano coating film can significantly improve the high-temperature resistance and oxidation resistance of the tool tip 2 material, and can further improve the hardness and wear resistance of the coating, and maintain high toughness, which can achieve the effect of reducing the friction coefficient.

[0022] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0023] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, the usual designs can be referred to. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0024] Finally, the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A forming milling cutter with a chip removal function, comprising a cutter body (1), characterized in that, A cutting head (2) is provided at the top of the blade body (1). A chip removal groove (21) in the structure of a spiral groove body is formed on the surface of the cutting head (2). Six chip removal grooves (21) are evenly arranged. A cutting edge (22) is arranged between two adjacent chip removal grooves (21). Six cutting edges (22) corresponding to the chip removal grooves (21) are evenly arranged. The cutting edge (22) is divided into a corrugated section (22a) and a smooth section (22b). Straight corrugated lines are densely arranged on the corrugated section (22a). Four corrugated sections (22a) are arranged, and two smooth sections (22b) are arranged.

2. The form milling cutter with chip removal function according to claim 1, characterized in that, The chip removal groove (21) is divided into a first chip removal section (21a) and a second chip removal section (21b). Three first chip removal sections (21a) and three second chip removal sections (21b) are respectively arranged. The first chip removal section (21a) and the second chip removal section (21b) are arranged alternately. The spiral angle of the first chip removal section (21a) is 40.5 degrees, and the spiral angle of the second chip removal section (21b) is 39.5 degrees. The cross section of the chip removal groove (21) is of a U-shaped structure.

3. The forming milling cutter with chip removal function according to claim 1, characterized in that, An inner arc notch (23) is formed at the top of the cutting edge (22). A negative rake angle (24) is arranged at the edge of the inner arc notch (23).

4. A forming milling cutter with a chip removal function according to claim 1, characterized in that, A nano coating is provided on the surface of the cutting head (2).

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