Self-chip-suction milling cutter disc

Abstract

The utility model discloses a self-suction milling cutter disc which comprises a rotary cutter disc, and a plurality of milling cutter heads are fixed on the rotary cutter disc; the two ends of the milling cutter head are a cutting end and a tail wing end respectively, the tail wing end and the cutting end protrude out of the inner disc face and the outer disc face of the rotary cutter disc respectively, a cutting blade is installed at the cutting end, and a chip guiding face extending from the cutting end to the tail wing end is formed on one side of the milling cutter head and can be a straight face or a curved face. The angle and the area of the curved surface or the self surface and the shape of the chip guiding surface are designed for both chip guiding and air guiding, so that chip guiding is facilitated, high-pressure air flow is generated favorably, and the chip guiding surface has the function of a fan impeller blade. A chip suction channel penetrating through the rotary cutter head is formed on one side, close to the chip guide surface, of the milling cutter head; and compared with a traditional method of additionally arranging a negative pressure exhaust fan, scrap suction is simpler, more convenient and more efficient. Therefore, mechanical cost can be saved, electric energy consumption of an independent scrap suction fan is saved, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of milling cutters. Background Art

[0002] During the large-area milling process of metal, some of the chips generated by the milling cutter will splash outward at high speed. The splashing chips may scratch the processed surface, thereby reducing the milling quality. In the existing practice, a chip suction device can be installed at the milling cutter, such as using a high-pressure fan to exhaust air at the processing point or around the milling cutter. This method has the problems of high energy consumption, high noise of the high-pressure fan, and uneven chip suction, and cannot achieve the purpose of accurate chip suction. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a self-absorbent chip milling cutter disc, which absorbs chips more evenly and efficiently than a traditional negative pressure exhaust fan.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a self-suction chip milling cutter disc, including a rotary cutter disc, on which a plurality of milling cutter heads are fixed; the two ends of the milling cutter head are respectively the tail wing end of the cutting end, the tail wing end and the cutting end respectively protrude from the inner and outer disc surfaces of the rotary cutter disc, one side of the milling cutter head forms a chip guide surface extending from the cutting end to the tail wing end, and the side of the milling cutter head close to the chip guide surface forms a chip suction channel running through the front and rear of the rotary cutter disc.

[0005] Furthermore, a plurality of milling cutter inserting openings are arranged along the outer contour of the rotary cutter disc, and a milling cutter head is fixedly embedded in each milling cutter inserting opening.

[0006] Furthermore, the waist seat portion between the cutting end and the tail wing end of the milling cutter head is fixedly embedded in the milling cutter embedding opening.

[0007] Furthermore, a cutter disc guard is provided on the outer periphery of the rotary cutter disc, a circulating air duct is formed in the cutter disc guard, and the circulating air duct is located on the back side of the rotary cutter disc.

[0008] Furthermore, the circulating air duct is connected to a discharge pipe at a position deviating from the axis of the rotating cutter disc.

[0009] Furthermore, an inner ring wall coaxial with the rotating cutter disc is fixedly arranged in the cutter disc shield, and the circulating air duct is coaxial with the outer circle of the inner ring wall; the tail end of each milling cutter head is in the circulating air duct.

[0010] Furthermore, a power output shaft is fixedly connected to the axis of the rotary cutter disc.

[0011] Beneficial effect: The metal chips cut off by the cutting end of each milling cutter head of the utility model are immediately sucked into the high-speed circulating gas in the circulating air duct through the chip suction channel continuously and quickly under the action of the corresponding chip suction channel and the smooth chip guide surface, thereby avoiding the problem of chips splashing outward and scratching the surface of the workpiece. At the same time, because the chip suction channel is just at the cutting end of each milling cutter head, the purpose of accurate chip suction is achieved, which is more uniform and efficient than the traditional negative pressure exhaust fan chip suction; it is simpler, more convenient and more efficient than the traditional rear-added negative pressure exhaust fan chip suction. It can also save mechanical costs, save the power consumption of a separate chip suction fan, and save energy and protect the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the overall structure;

[0013] Attached Figure 2 This is a disassembly diagram of this solution;

[0014] Attached Figure 3 It is a schematic diagram of the cutter head structure on the rotary cutter disc;

[0015] Attached Figure 4 For attachment Figure 3 Side view of. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] As attached Figures 1 to 3 The self-absorption chip milling cutter disc shown in the figure comprises a rotary cutter disc 20, a power output shaft 21 is fixedly connected to the axis of the rotary cutter disc 20, and a plurality of milling cutter heads 1 are fixed on the rotary cutter disc 20. The milling cutter heads 1 are generally made of cemented carbide, and the two ends of the milling cutter head 1 are respectively a cutting end 1.1 and a tail end 1.2, as shown in FIG. Figure 3 and 4 The tail wing end 1.2 and the cutting end 1.1 protrude from the inner and outer disc surfaces of the rotary cutter disc 20 respectively. The chip end 1.1 is equipped with a cutting blade. One side of the milling cutter head 1 forms a chip guide surface 30 extending from the cutting end 1.1 to the tail wing end 1.2. This chip guide surface 30 can be a self-surface or a curved surface. The angle and area of ​​this curved surface or self-surface, as well as the shape of the chip guide surface, are specially designed to take into account the two major functions of chip guiding and wind guiding. It is convenient for chip guiding and is conducive to generating high-pressure airflow. Such a chip guide surface also has the function of a fan impeller blade, and the side of the milling cutter head 1 close to the chip guide surface 30 forms a chip suction channel 19 that runs through the front and rear of the rotary cutter disc 20.

[0018] The rotary cutter disc 20 is provided with a plurality of milling cutter inserting openings 25 along the outer contour, and a milling cutter head 1 is fixedly embedded in each milling cutter inserting opening 25. The milling cutter inserting openings 25 and the milling cutter head 1 are fixed by interference fitting, and the fixing process can also be completed by welding. After the milling cutter inserting openings 25 and the milling cutter head 1 are interference fitted, a chip suction channel 19 is formed on the side of the milling cutter head 1 close to the chip guide surface 30, which runs through the front and rear of the rotary cutter disc 20. Figure 3 shown.

[0019] like Figure 3 As shown, the waist seat portion 1.3 between the cutting end 1.1 and the tail wing end 1.2 of the milling cutter head 1 is fixedly embedded in the milling cutter embedding opening 25; a cutter disc guard 3 is provided on the outer periphery of the rotary cutter disc 20, a circulation air duct 22 is formed in the cutter disc guard 3, and the circulation air duct 22 is on the back side of the rotary cutter disc 20; the circulation air duct 22 is connected to the discharge pipe 5 at a position deviating from the axis of the rotary cutter disc 20; the discharge pipe 5 is specifically connected to the circumferential side wall of the cutter disc guard 3.

[0020] An inner ring wall 23 coaxial with the rotating cutter disc 20 is fixedly arranged inside the cutter disc shield 3, and the circulating air duct 22 is coaxial with the outer circle of the inner ring wall 23; the tail wing end 1.2 of each milling head 1 is in the circulating air duct 22; the rotation drive of the rotating cutter disc 20 will stir the circulating air duct 22 through the tail wing end 1.2 of each milling head 1 to form a high-speed circulation, and the high-speed circulating gas rotating in the circulating air duct 22 is continuously thrown out through the discharge pipe 5 deviating from the axial position of the rotating cutter disc 20 under the action of centrifugal force, thereby forming a continuous negative pressure in the circulating air duct 22.

[0021] Working principle of automatic chip suction:

[0022] During the high-speed rotation of the rotary cutter disc 20, the cutting end 1.1 of each milling head 1 protruding from the outer disc surface of the rotary cutter disc 20 performs milling on the to-be-machined surface of the workpiece to be machined. At the same time, the tail end 1.2 of each milling head 1 stirs the circulating air duct 22 to form a high-speed circulation. The high-speed circulating gas in the circulating air duct 22 is continuously thrown out through the discharge pipe 5 deviating from the axial position of the rotary cutter disc 20 under the action of centrifugal force. According to the Bernoulli equation of fluid mechanics, the gas pressure decreases accordingly under high flow rate, thereby forming a continuous negative pressure in the circulating air duct 22, and the negative pressure is transmitted to each chip suction channel 19, so that the chip suction channel 19 is cut by the cutting end 1.1 of each milling head 1. The metal chips that come down are immediately sucked into the high-speed circulating gas in the circulating air duct 22 through the chip suction channel 19 continuously and quickly under the action of the corresponding chip suction channel 19 and the smooth chip guide surface 30, thereby avoiding the problem of chips splashing outward and scratching the surface of the workpiece. At the same time, since the chip suction channel 19 is just at the cutting end 1.1 of each milling head 1, the purpose of accurate chip suction is achieved, which is more uniform and efficient than the traditional negative pressure exhaust fan. The metal chips entering the circulating air duct 22 rotate synchronously with the high-speed circulation, and finally the metal chips rotating at a high speed in the circulating air duct 22 are continuously thrown out through the discharge pipe 5 under the action of centrifugal force, thereby achieving the purpose of automatic chip suction.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A self-priming chip milling cutter disc, comprising a rotary cutter disc (20), on which a plurality of milling cutter heads (1) are fixed; characterized in that: The two ends of the milling cutter head (1) are respectively the tail wing end (1.2) of the cutting end (1.1), the tail wing end (1.2) and the cutting end (1.1) protrude from the inner and outer disc surfaces of the rotary cutter disc (20), one side of the milling cutter head (1) forms a chip guide surface (30) extending from the cutting end (1.1) to the tail wing end (1.2), and the side of the milling cutter head (1) close to the chip guide surface (30) forms a chip suction channel (19) that runs through the front and rear of the rotary cutter disc (20).

2. A self-absorbent chip milling cutter disc according to claim 1, characterized in that: A plurality of milling cutter inserting openings (25) are arranged along the outer contour of the rotary cutter disc (20), and a milling cutter head (1) is fixedly inserted in each milling cutter inserting opening (25).

3. The self-absorbent chip milling cutter disc according to claim 1, characterized in that: The waist seat portion (1.3) between the cutting end (1.1) and the tail wing end (1.2) of the milling cutter head (1) is fixedly embedded in the milling cutter embedding opening (25).

4. The self-absorbent chip milling cutter disc according to claim 1, characterized in that: A cutter disc guard (3) is arranged on the outer periphery of the rotary cutter disc (20), a circulating air duct (22) is formed in the cutter disc guard (3), and the circulating air duct (22) is located on the back side of the rotary cutter disc (20).

5. A self-absorbent chip milling cutter disc according to claim 4, characterized in that: The circulating air duct (22) is connected to a discharge pipe (5) at a position deviating from the axis of the rotary cutter disc (20).

6. A self-absorbent chip milling cutter disc according to claim 4, characterized in that: An inner ring wall (23) coaxial with the rotary cutter disc (20) is fixedly arranged inside the cutter disc shield (3); a circulating air duct (22) is coaxial with the outer ring of the inner ring wall (23); and the tail wing end (1.2) of each milling cutter head (1) is in the circulating air duct (22).

7. The self-absorbent chip milling cutter disc according to claim 1, characterized in that: A power output shaft (21) is fixedly connected to the axis of the rotary cutter disc (20).

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