Pre-milling cutter

Abstract

The utility model discloses a pre-milling cutter, which comprises a cutter body, a plurality of cutting units are arranged on the cylindrical surface of the cutter body, each cutting unit comprises a mounting groove, a tooth holder, a blade, a screw and a chip groove, the mounting groove is milled on the cylindrical surface of the cutter body, the tooth holder is arranged in the mounting groove, and the tooth holder is fixedly mounted in the mounting groove through the screw. Chip grooves are formed in the sides, away from the tooth holders, of the mounting grooves, and blades are welded to the sides, close to the chip grooves, of the tooth holders. One side of the mounting groove and one side of the tooth holder are designed into the arc-shaped structure, the design of a trapezoidal surface in the prior art is changed, the design of a dovetail shape is omitted, and the tooth holder with the arc-shaped surface can provide a more flexible mounting and connecting mode, so that the mounting process is simplified, the mounting difficulty is reduced, and the mounting efficiency is improved; and better structural continuity and streamline are achieved, loads in all directions can be dispersed and borne easily, the bearing capacity of the tooth holder is improved, and therefore the stability of the whole structure is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, and particularly relates to a pre-milling cutter. Background Art

[0002] At present, the patent with the publication number CN208811172U discloses a disposable cutter head aluminum alloy cutter body pre-milling cutter, belonging to the technical field of machinery and cutting tools. The cutter body is milled with a cutter head installation socket with a dovetail groove. The cutter head is installed in the cutter head installation socket and fixed on the aluminum alloy cutter body with screws. The cutter heads are arranged in a herringbone pattern at an angle θ with each other. There is a hidden or sunken chip groove in front of the cutter head installed on the cutter body 1. The cutter head is a hard alloy cutter grain welded with a blade. The installation mating surface of the cutter head is trapezoidal at an angle α, and the trapezoidal surfaces on both sides are at angles β and β' respectively. The trapezoidal surfaces on both sides are distributed with dovetail shapes, and the dovetail shapes match the dovetail grooves of the cutter body. The advantage of the utility model is that the disposable cutter head aluminum alloy cutter body pre-milling cutter is a high-speed cutting tool for precision milling the cross-section of plates in an edge banding machine, and is suitable for processing materials such as double-sided veneer density boards and double-sided veneer particle boards.

[0003] Although the device has the above advantages, there are still the following defects: The installation groove in the pre-milling cutter is designed with a trapezoidal surface, and the dovetail shapes are distributed at one end of the trapezoidal surface. Such a design requires complex operation steps and more precise positioning during the installation of the blade, which will increase the installation difficulty and reduce the installation efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a pre-milling cutter.

[0005] In order to solve the above technical problem, the utility model provides the following technical solutions:

[0006] A pre-milling cutter of the utility model includes a cutter body. A plurality of cutting units are arranged on the cylindrical surface of the cutter body. Each cutting unit includes an installation groove, a tooth seat, a blade, a screw, and a chip removal groove. The installation groove is milled on the cylindrical surface of the cutter body. The tooth seat is arranged inside the installation groove. The tooth seat is fixedly installed inside the installation groove through the screw. The chip removal grooves are opened on one side of the installation groove away from the tooth seat. The blades are welded on one side of the tooth seat close to the chip removal groove. The side of the tooth seat away from the chip removal groove is an arc structure. The included angle between the blade and the axis of the cutter body is θ. One side of the installation groove away from the chip removal groove is arc-shaped and adapted to the tooth seat.

[0007] As a preferred technical solution of the present utility model, a central hole is opened in the center of the cutter body, key grooves are opened on both sides of the central hole, and the length L of the distance between the ends of the key grooves is 38.4 mm.

[0008] As a preferred technical solution of the present utility model, the degree of θ is 25 - 70°.

[0009] As a preferred technical solution of the present utility model, the chip removal groove is of a sunken design.

[0010] As a preferred technical solution of the present utility model, the tooth seats are respectively distributed on the outer circumferential surface of the tool body, the cutting outer diameter D of the blade is 125 mm, and the outer diameter d of the tool body is 115 mm.

[0011] As a preferred technical solution of the present utility model, the tooth seats and another tooth seat are arranged and installed in a herringbone pattern.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By designing one side of the installation groove and the tooth seat into an arc structure, the present utility model changes the trapezoidal surface design in the prior art and deletes the dovetail shape design. The tooth seat with an arc surface can provide a more flexible installation and connection method, which helps to simplify the installation process, reduce the installation difficulty, improve the installation efficiency, and has better structural continuity and streamline, which helps to disperse and bear the loads in all directions, improve the bearing capacity of the tooth seat, and thus ensure the stability of the overall structure. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the top view of the present utility model;

[0017] Figure 3 is the front view of the present utility model;

[0018] Figure 4 is the partial structural sectional view of the present utility model;

[0019] In the figure: 1, tool body; 2, cutting unit; 201, installation groove; 202, tooth seat; 203, blade; 204, screw; 205, chip removal groove; 3, center hole; 4, keyway. Detailed Embodiments

[0020] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0021] Among them, the same reference numerals in the drawings all refer to the same components.

[0022] As Figures 1-4 shown, the present utility model provides a pre-milling cutter, which includes a cutter body 1. A plurality of cutting units 2 are arranged on the cylindrical surface of the cutter body 1. The cutting unit 2 includes a mounting groove 201, a tooth seat 202, a blade 203, a screw 204, and a chip removal groove 205. A mounting groove 201 is milled on the cylindrical surface of the cutter body 1. A tooth seat 202 is arranged inside the mounting groove 201. The tooth seat 202 is fixedly installed inside the mounting groove 201 through a screw 204. Chip removal grooves 205 are opened on one side of the mounting groove 201 away from the tooth seat 202. Blades 203 are welded on one side of the tooth seat 202 close to the chip removal groove 205. The side of the tooth seat 202 away from the chip removal groove 205 is an arc structure. The included angle between the blade 203 and the axis of the cutter body 1 is θ. One side of the mounting groove 201 away from the chip removal groove 205 is an arc design and is adapted to the tooth seat 202.

[0023] Further, a central hole 3 is opened in the center of the cutter body 1. Key grooves 4 are opened on both sides of the central hole 3. The length of the distance L between the ends of the key grooves 4 is 38.4 mm.

[0024] Further, the degree of θ is 25 - 70°.

[0025] Further, the chip removal groove 205 is a sunken design.

[0026] Further, the tooth seats 202 are respectively distributed on the outer circumferential surface of the cutter body 1. The cutting outer diameter D of the blade 203 is 125 mm, and the outer diameter d of the cutter body 1 is 115 mm.

[0027] Further, the tooth seats 202 are arranged in a herringbone pattern with another tooth seat 202.

[0028] Specifically, the pre-milling cutter fixes the tooth seat 202 inside the mounting groove 201 through the screw 204, making it convenient to replace the blade 203 on the tooth seat 202, improving the practicability. And one side of the mounting groove 201 and the tooth seat 202 is designed as an arc structure, changing the trapezoidal surface design in the prior art and deleting the dovetail shape design. The arc-shaped tooth seat 202 can provide a more flexible installation and connection method, helping to simplify the installation process, reduce the installation difficulty, improve the installation efficiency, and having better structural continuity and streamline, helping to disperse and bear the loads in all directions, improving the bearing capacity of the tooth seat 202, and thus ensuring the stability of the overall structure.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, 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 pre-milling cutter, characterized in that: The invention comprises a cutter body (1), wherein a plurality of cutting units (2) are arranged on the cylindrical surface of the cutter body (1), wherein the cutting units (2) comprise a mounting groove (201), a tooth seat (202), a blade (203), a screw (204), and a chip removal groove (205), wherein the mounting groove (201) is milled on the cylindrical surface of the cutter body (1), wherein the tooth seat (202) is arranged inside the mounting groove (201), wherein the tooth seat (202) is fixedly mounted inside the mounting groove (201) by means of the screw (204), and wherein the mounting groove (201) is provided with a plurality of cutting units (2) on the cylindrical surface of the cutter body ( ... cutting unit (203) comprises a mounting groove (201), wherein the tooth seat (202) is fixedly mounted inside the mounting groove (201) by means of the screw (204), and wherein the cutting unit (203) comprises a mounting groove (201), wherein the tooth seat (202) is fixedly mounted inside the mounting groove (201) by means of the screw (204). The chip removal groove (205) is provided on the side of the groove (201) away from the tooth seat (202), the blade (203) is welded on the side of the tooth seat (202) close to the chip removal groove (205), the side of the tooth seat (202) away from the chip removal groove (205) is an arc-shaped structure, the angle between the blade (203) and the axis of the tool body (1) is θ, and the side of the mounting groove (201) away from the chip removal groove (205) is designed to be arc-shaped and compatible with the tooth seat (202).

2. A pre-milling cutter according to claim 1, characterized in that: A central hole (3) is provided at the center of the blade body (1), key slots (4) are provided on both sides of the central hole (3), and the length of the distance L between the ends of the key slots (4) is 38.4 mm.

3. A pre-milling cutter according to claim 1, characterized in that: The degree of θ is 25-70°.

4. A pre-milling cutter according to claim 1, characterized in that: The chip removal groove (205) is of a sunken design.

5. A pre-milling cutter according to claim 1, characterized in that: The tooth seats (202) are respectively distributed on the outer circumferential surface of the knife body (1); the cutting outer diameter D of the blade (203) is 125 mm, and the outer diameter d of the knife body (1) is 115 mm.

6. A pre-milling cutter according to claim 1, characterized in that: The tooth seat (202) and another tooth seat (202) are installed in a herringbone arrangement.

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