A machining device for metal cutting

Abstract

The application relates to the technical field of metal cutting, and discloses a machining device for metal cutting, which comprises a machining table, the upper surface of the machining table is fixedly connected with a support frame one, the outer surface of the support frame one is fixedly connected with a cutting mechanism, the outer surface of the cutting mechanism is fixedly connected with a cleaning mechanism and a cooling nozzle, the inside of the machining table is clamped with a workpiece, the inclination angle of an arc-shaped plate is changed by adjusting the position of a rotating sleeve ring, the arc-shaped scraper frame rotates around a bearing and reciprocates by a torsional spring one, and the cutting chips in the inner wall of an arc-shaped protective shell are scraped; the inner wall of the inner arc surface protective shell is inclined to prevent the cutting chips from being retained, and the retained cutting chips caused by the cutting fluid are removed in cooperation with the arc-shaped scraper frame; when a disc cutter rotates, a scraper two peels off large cutting chips, and brush hairs sweep away small cutting chips and remove the adhered cutting chips caused by the cutting fluid; the friction rotation of a friction disc and a friction sleeve makes the scraper two and the brush hairs rotate around the bent rod, so that the cutting chips are discharged along the inclined surface.

Description

Technical Field

[0001] This invention relates to the field of metal cutting technology, specifically to a processing apparatus for metal cutting. Background Technology

[0002] In modern manufacturing, metal cutting devices for machining centers are key equipment for high-precision and high-efficiency machining of metal workpieces, and are widely used in important fields such as aerospace, automotive manufacturing, and mold processing. These fields have increasingly stringent requirements for workpiece machining accuracy, surface quality, and production efficiency, driving the continuous development of metal cutting devices. With advancements in industrial technology, the types of metal materials being processed are becoming increasingly diverse, including not only ordinary steel but also high-strength alloys, titanium alloys, and other difficult-to-machine materials. This presents even greater challenges to the cutting performance, stability, and adaptability of cutting devices.

[0003] Patent application CN201911141972.1 discloses a metal cutting device for a machining center, including a worktable. A telescopic cylinder is arranged above the worktable. A recovery device is installed on one side of the telescopic cylinder. A moving rod is arranged on the side of the telescopic cylinder away from the recovery device. A slider is installed on the side of the moving rod away from the telescopic cylinder. A slide rail is arranged on the outer side of the slider. A chuck is installed above the slider. An electric telescopic rod is installed on the side of the slide rail away from the telescopic cylinder. A mounting plate is arranged above the electric telescopic rod.

[0004] However, this patent also has the following shortcomings: when a rotary disc cutter cuts a metal workpiece, cutting fluid is required to cool the tool, and the chips will mix into the cutting fluid. Due to the fluid characteristics of the cutting fluid, the chips are easy to adhere to the surface of the rotary disc cutter, affecting the cutting effect, and also causing the tool to wear more, the cutting accuracy to decrease, and the surface quality of the machined surface to deteriorate. In view of this situation, a processing device for metal cutting is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a processing apparatus for metal cutting to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a processing device for metal cutting, comprising a processing table, a support frame fixedly connected to the upper surface of the processing table, and a cutting mechanism fixedly connected to the outer surface of the support frame, the cutting mechanism comprising: The motor has an inner arc-shaped protective shell fixedly connected to its outer surface. The inner wall of the inner arc-shaped protective shell is inclined at an angle of 15°. The output end of the motor is fixedly connected to a rotating shaft, which is used to support the inner arc-shaped protective shell. The bearing has a torsion spring and a semi-circular sleeve fitted on its outer surface. A scraper is fixedly connected to the outer surface of the semi-circular sleeve. A semi-circular sleeve is snapped onto the outer surface of the scraper. An arc-shaped scraper frame is fixedly connected to the outer surface of the semi-circular sleeve. The arc-shaped scraper frame is used to scrape the inside of the inner arc-shaped protective shell.

[0007] According to the above technical solution, a cleaning mechanism and a cooling nozzle are fixedly connected to the outer surface of the cutting mechanism, a workpiece is clamped inside the processing table, the cutting mechanism also includes a support frame two fixedly connected to the outer surface of support frame one, a chuck one fixedly connected to the outer surface of the rotating shaft, a disc cutter clamped to the outer surface of the chuck one, and a chuck two threadedly connected to the outer surface of the chuck one. The chuck one and the chuck two are used to limit the movement of the disc cutter.

[0008] According to the above technical solution, the cutting mechanism further includes a sliding rod, on the outer surface of which a rotating collar and a rubber sleeve are sleeved. An arc-shaped plate is rotatably connected to the outer surface of the rotating collar. A nut is fixedly connected to the outer surface of the rubber sleeve. A counterweight is fixedly connected to the outer surface of the chuck. A stop post is slidably connected inside the chuck. A spring is fixedly connected to the outer surface of the stop post. The counterweight is used to balance the center of gravity of the chuck.

[0009] According to the above technical solution, the second support frame is fixedly connected to the cooling nozzle, the motor is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the inner arc surface protective shell, the upper surface of the inner arc surface protective shell is fixedly connected to the lower surface of the second support frame, the bearing is rotatably connected to the rotating shaft, the first torsion spring is fixedly connected to the outer surface of the rotating shaft, and the first scraper is used to scrape the surface of the bearing and the first semi-circular sleeve.

[0010] According to the above technical solution, the outer surface of the spring is fixedly connected to the inner wall of the second chuck, the arc-shaped scraper frame rotates on the outer surface of the bearing, the arc-shaped scraper frame contacts the inner wall of the inner arc-shaped protective shell, the lower surface of the arc-shaped plate contacts the upper surface of the counterweight, the outer surface of the stop post contacts the outer surface of the arc-shaped plate, the torsion spring is used to torsion the arc-shaped scraper frame, and the sliding rod is used to support the arc-shaped scraper frame.

[0011] According to the above technical solution, the cleaning mechanism includes a curved rod, which is fixedly connected to the lower surface of the support frame two. A rotating frame is rotatably connected to the outer surface of the curved rod, and a torsion spring two is fixedly connected to the outer surface of the rotating frame. A scraper two is sleeved on the outer surface of the rotating frame, and a curved plate is fixedly connected to the upper surface of the rotating frame. Brush bristles are fixedly connected to the outer surface of the curved plate, and the brush bristles are in contact with the outer surface of the chuck one. The scraper two and the brush bristles are used to clean the chuck one.

[0012] According to the above technical solution, the cleaning mechanism further includes a screw, which is rotatably connected to the rotating frame. A telescopic baffle is fixedly connected inside the rotating frame. A friction disc is fixedly connected to the outer surface of the bent rod. A friction sleeve is snapped onto the outer surface of the friction disc. A second rubber sleeve is fixedly connected to the outer surface of the friction sleeve. The second rubber sleeve is used to protect the contact between the friction disc and the friction sleeve.

[0013] According to the above technical solution, the outer surface of the second torsion spring is fixedly connected to the outer surface of the second scraper, the outer surface of the telescopic baffle is fixedly connected to the outer surface of the friction sleeve, the second rubber sleeve is sleeved with the friction disc, and the screw is used to push the friction sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This processing device for metal cutting, by setting a rotating collar and adjusting the position of the symmetrical rotating collar, can change the tilt angle of the arc plate, thereby adjusting the contact area between the stop column and the arc plate, so that the arc scraper frame can rotate around the bearing, and at the same time achieve reciprocating motion with the help of a torsion spring, thereby scraping the inner wall of the arc protective shell.

[0015] 2. This type of machining device for metal cutting, by setting an inner arc-shaped protective shell with a certain inclination angle on its inner wall, makes it difficult for chips to stay on the inner wall, thus avoiding affecting the disc cutter. With the help of the arc-shaped scraper frame, chips that are stuck inside the inner arc-shaped protective shell due to the fluid action of the cutting fluid can be removed.

[0016] 3. This type of machining device for metal cutting, by setting up a scraper and a brush, when the disc cutter rotates, the scraper first peels off the larger chips adhering to its surface, and the brush then sweeps away the remaining fine chips, removing the chips that are stuck to the surface of the disc cutter due to the fluid characteristics of the cutting fluid.

[0017] 4. This type of processing device for metal cutting, by setting a friction disc and a friction sleeve, when the scraper and the brush are doing double cleaning, the friction rotation of the friction disc and the friction sleeve allows the scraper and the brush to rotate around the curved rod at a certain angle, so that the cleaned chips can slide along the inclined plane and be discharged. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional view of the main body of the invention; Figure 3 This is a cross-sectional view of the structure of the rotating shaft of the present invention; Figure 4 This is a schematic diagram of the bearing structure of the present invention; Figure 5 for Figure 4Enlarged cross-sectional view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 7 This is a cross-sectional view of the rotating frame of the present invention; Figure 8 For Figure 7 Enlarged cross-sectional view of the structure at point B in the middle; Figure 9 This is a schematic diagram of the screw structure of the present invention.

[0019] In the diagram: 1. Machining table; 2. Support frame one; 3. Cutting mechanism; 31. Support frame two; 32. Motor; 33. Rotating shaft; 331. Chuck one; 332. Chuck two; 333. Disc cutter; 34. Inner arc protective shell; 35. Bearing; 351. Torsion spring one; 352. Semicircular sleeve one; 353. Scraper one; 354. Semicircular sleeve two; 355. Arc-shaped scraper frame; 36. Sliding rod; 361. Rotating collar; 36 2. Curved plate; 363. Rubber sleeve one; 364. Nut; 365. Stop post; 366. Counterweight; 367. Spring; 4. Cleaning mechanism; 41. Bending rod; 42. Rotating frame; 43. Torsion spring two; 431. Scraper two; 432. Bending plate; 433. Brush bristles; 44. Screw; 441. Telescopic baffle; 442. Friction disc; 443. Friction sleeve; 444. Rubber sleeve two; 5. Cooling nozzle; 6. Workpiece. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Example 1: See Figures 1-5The present invention provides a technical solution: a processing device for metal cutting, comprising a processing table 1, a support frame 2 fixedly connected to the upper surface of the processing table 1, and a cutting mechanism 3 fixedly connected to the outer surface of the support frame 2, the cutting mechanism 3 comprising: Motor 32, with an inner arc-shaped protective shell 34 fixedly connected to its outer surface. The inner wall of the inner arc-shaped protective shell 34 is inclined at an angle of 15°. A rotating shaft 33 is fixedly connected to the output end of the motor 32. The rotating shaft 33 is used to support the inner arc-shaped protective shell 34. Bearing 35, with a torsion spring 351 and a semi-circular sleeve 352 sleeved on its outer surface, a scraper 353 fixedly connected to the outer surface of the semi-circular sleeve 352, a semi-circular sleeve 354 snapped onto the outer surface of the scraper 353, and an arc-shaped scraper frame 355 fixedly connected to the outer surface of the semi-circular sleeve 354. The arc-shaped scraper frame 355 is used to scrape the inside of the inner arc-shaped protective shell 34.

[0024] The outer surface of the cutting mechanism 3 is fixedly connected to the cleaning mechanism 4 and the cooling nozzle 5. The workpiece 6 is clamped inside the processing table 1. The cutting mechanism 3 also includes a support frame 2 31 which is fixedly connected to the outer surface of the support frame 1 2. The outer surface of the rotating shaft 33 is fixedly connected to the chuck 1 331. The outer surface of the chuck 1 331 is clamped to the disc cutter 333. The outer surface of the chuck 1 331 is threadedly connected to the chuck 2 332. The chuck 1 331 and the chuck 2 332 are used to limit the disc cutter 333.

[0025] The cutting mechanism 3 also includes a sliding rod 36. A rotating collar 361 and a rubber sleeve 363 are sleeved on the outer surface of the sliding rod 36. An arc plate 362 is rotatably connected to the outer surface of the rotating collar 361. A nut 364 is fixedly connected to the outer surface of the rubber sleeve 363. A counterweight 366 is fixedly connected to the outer surface of the chuck 331. A stop post 365 is slidably connected inside the chuck 331. A spring 367 is fixedly connected to the outer surface of the stop post 365. The counterweight 366 is used to balance the center of gravity of the chuck 331.

[0026] Support frame 2 31 is fixedly connected to cooling nozzle 5, motor 32 is fixedly connected to rotating shaft 33, rotating shaft 33 is rotatably connected to inner arc surface protective shell 34, upper surface of inner arc surface protective shell 34 is fixedly connected to lower surface of support frame 2 31, bearing 35 is rotatably connected to rotating shaft 33, torsion spring 1 351 is fixedly connected to outer surface of rotating shaft 33, and scraper 1 353 is used to scrape the surface of bearing 35 and semi-circular sleeve 1 352.

[0027] The outer surface of spring 367 is fixedly connected to the inner wall of chuck 332. The arc-shaped scraper frame 355 rotates on the outer surface of bearing 35. The arc-shaped scraper frame 355 contacts the inner wall of the inner arc-shaped protective shell 34. The lower surface of arc-shaped plate 362 contacts the upper surface of counterweight 366. The outer surface of stop post 365 contacts the outer surface of arc-shaped plate 362. Torsion spring 351 is used to torsion the arc-shaped scraper frame 355. Sliding rod 36 is used to support the arc-shaped scraper frame 355. When the 65 rotates around the shaft 33 inside the chuck 332, the centrifugal force of the rotating stop 365 compresses the spring 367, causing the stop 365 to move outward. Thus, when the disc cutter 333 maintains a high speed, the stop 365 does not contact the arc plate 362, thereby preventing the arc scraper frame 355 from affecting the rotational cutting of the disc cutter 333. At low speeds, the arc scraper frame 355 can contact the arc plate 362 to scrape the inner wall of the inner arc protective shell 34.

[0028] When the disc cutter 333 is protected by the inner arc surface protective shell 34, due to the fluid characteristics of the cutting fluid, the chips adhere to the inner wall surface of the inner arc surface protective shell 34 when they splash outward, thus affecting the disc cutter 333. Therefore, the cutting mechanism 3 needs to scrape off the chips while cutting.

[0029] The working principle of this embodiment is as follows: When using this type of processing device for metal cutting, before chip removal, the rotating collar 361 is pushed to slide on the surface of the sliding rod 36, and the positions of the two symmetrically arranged rotating collars 361 are adjusted so that the rotating collar 361 rotates inside the arc plate 362, causing the arc plate 362 to tilt at a certain angle. The rotating collar 361 is squeezed by the rubber sleeve 363, and the position of the rotating collar 361 is fixed by the nut 364, thereby causing the stop post 365 to... When the arc-shaped scraper frame 355 rotates around the rotating shaft 33, the angle of rotation is the same as the angle of the inner arc-shaped protective shell 34. By adjusting the processing table 1, the workpiece 6 is clamped on the upper surface of the processing table 1. At this time, the motor 32 starts and drives the rotating shaft 33 to rotate, and drives the disc cutter 333 to rotate through the chuck one 331 and the chuck two 332, so that the disc cutter 333 cuts the workpiece 6. When the chuck one 331 and the chuck two 332 rotate, the stop post 3 is pushed by the spring 367. 65 rotates inside chuck one 331 and chuck two 332. When the side of the stop post 365 contacts the side of the arc plate 362, the arc plate 362 is pushed to make the arc scraper frame 355 rotate around the pivot 33. When the arc scraper frame 355 rotates to be flush with the other side of the inner arc protective shell 34, the arc scraper frame 355 compresses the spring 367 and slides to the outer end of chuck two 332 through the inclined surface of the arc plate 362, so that the arc scraper frame 355 disengages from the arc. When the shaped plate 362 contacts, the torsion spring 351 twists and drives the arc-shaped scraper frame 355 to rotate in the opposite direction around the rotating shaft 33 and reset. While the arc-shaped scraper frame 355 reciprocates inside the inner arc-shaped protective shell 34, it scrapes the inner wall of the inner arc-shaped protective shell 34. It also drives the scraper 353 to rotate through the semi-circular sleeve 352, scraping the outer surface of the bearing 35 and scraping the rotating shaft 33 located inside the inner arc-shaped protective shell 34, thereby causing the chips that splashed onto the inner wall of the inner arc-shaped protective shell 34 to fall off.

[0030] Example 2: Please refer to Figures 6-9 Based on Embodiment 1, the present invention provides a technical solution: the cleaning mechanism 4 includes a bent rod 41, which is fixedly connected to the lower surface of the support frame 31. A rotating frame 42 is rotatably connected to the outer surface of the bent rod 41. A torsion spring 43 is fixedly connected to the outer surface of the rotating frame 42. A scraper 431 is sleeved on the outer surface of the rotating frame 42. A bent plate 432 is fixedly connected to the upper surface of the rotating frame 42. Brush bristles 433 are fixedly connected to the outer surface of the bent plate 432. The brush bristles 433 are in contact with the outer surface of the chuck 331. The scraper 431 and the brush bristles 433 are used to clean the chuck 331.

[0031] The cleaning mechanism 4 also includes a screw 44, which is rotatably connected to the rotating frame 42. A telescopic baffle 441 is fixedly connected inside the rotating frame 42. A friction disc 442 is fixedly connected to the outer surface of the bent rod 41. A friction sleeve 443 is snapped onto the outer surface of the friction disc 442. A rubber sleeve 444 is fixedly connected to the outer surface of the friction sleeve 443. The rubber sleeve 444 is used to protect the contact between the friction disc 442 and the friction sleeve 443.

[0032] The outer surface of the second torsion spring 43 is fixedly connected to the outer surface of the second scraper 431, the outer surface of the telescopic baffle 441 is fixedly connected to the outer surface of the friction sleeve 443, the second rubber sleeve 444 is sleeved with the friction disc 442, and the screw 44 is used to push the friction sleeve 443. When the second scraper 431 contacts the surface of the disc cutter 333, the torsion of the second torsion spring 43 makes the inside of the second scraper 431 fit tightly with the surface of the disc cutter 333. When the friction sleeve 443 moves outward, the second rubber sleeve 444 is stretched. When the friction sleeve 443 rubs against the friction disc 442, the second rubber sleeve 444 protects the friction disc 442 and the friction sleeve 443, thereby preventing the chips from affecting the friction contact between the friction disc 442 and the friction sleeve 443.

[0033] When the disc cutter 333 is cutting the workpiece 6, the cutting fluid causes the chips to stick to the surface of the disc cutter 333. As the disc cutter 333 rotates, the chips splash and stick to the inner wall of the inner arc protective shell 34, thus affecting the rotation of the disc cutter 333. Therefore, the cleaning mechanism 4 is needed to clean the chips on the surface of the disc cutter 333.

[0034] The working principle of this embodiment is as follows: When using this type of metal cutting processing device, when the disc cutter 333 rotates, the screw 44 rotates in the opposite direction, causing the friction sleeve 443 to release the contact with the friction disk 442. At this time, the rotating frame 42 is pushed to rotate around the bent rod 41 to adjust the angle. Then, the screw 44 rotates, pushing the friction sleeve 443 to contact the friction disk 442. Thus, the angle of the rotating frame 42 is fixed by the friction between the friction disk 442 and the friction sleeve 443. The system allows for slight adjustments at multiple angles. As the disc cutter 333 rotates, the torsion of the second torsion spring 43 causes the scraper 431 to fit tightly against the surface of the disc cutter 333, cleaning larger adhering chips from the surface of the disc cutter 333. The brush 433 then cleans smaller chips adhering to the surface of the disc cutter 333, removing chips that have adhered to the surface of the disc cutter 333 due to the cutting fluid. Simultaneously, the tilt angle of the rotating frame 42 allows the cleaned chips to slide along the inclined surface and fall onto the surface of the machining table 1.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A machining apparatus for metal cutting, comprising a machining table (1), wherein a support frame (2) is fixedly connected to the upper surface of the machining table (1), and a cutting mechanism (3) is fixedly connected to the outer surface of the support frame (2), characterized in that, The cutting mechanism (3) includes: The motor (32) has an inner arc-shaped protective shell (34) fixedly connected to its outer surface. The inner wall of the inner arc-shaped protective shell (34) is inclined at an angle of 15°. The output end of the motor (32) is fixedly connected to a rotating shaft (33), which is used to support the inner arc-shaped protective shell (34). The bearing (35) has a torsion spring (351) and a semi-circular sleeve (352) sleeved on its outer surface. A scraper (353) is fixedly connected to the outer surface of the semi-circular sleeve (352). A semi-circular sleeve (354) is snapped onto the outer surface of the scraper (353). An arc-shaped scraper frame (355) is fixedly connected to the outer surface of the semi-circular sleeve (354). The arc-shaped scraper frame (355) is used to scrape the inside of the inner arc-shaped protective shell (34).

2. The machining apparatus for metal cutting according to claim 1, characterized in that: The outer surface of the cutting mechanism (3) is fixedly connected to a cleaning mechanism (4) and a cooling nozzle (5). The workpiece (6) is clamped inside the processing table (1). The cutting mechanism (3) also includes a support frame two (31) which is fixedly connected to the outer surface of the support frame one (2). The outer surface of the rotating shaft (33) is fixedly connected to a chuck one (331). The outer surface of the chuck one (331) is clamped to a disc cutter (333). The outer surface of the chuck one (331) is threadedly connected to a chuck two (332). The chuck one (331) and the chuck two (332) are used to limit the disc cutter (333).

3. The machining apparatus for metal cutting according to claim 2, characterized in that: The cutting mechanism (3) further includes a sliding rod (36), on the outer surface of which a rotating collar (361) and a rubber sleeve (363) are sleeved. An arc plate (362) is rotatably connected to the outer surface of the rotating collar (361). A nut (364) is fixedly connected to the outer surface of the rubber sleeve (363). A counterweight (366) is fixedly connected to the outer surface of the chuck (331). A stop post (365) is slidably connected inside the chuck (331). A spring (367) is fixedly connected to the outer surface of the stop post (365). The counterweight (366) is used to balance the center of gravity of the chuck (331).

4. The machining apparatus for metal cutting according to claim 3, characterized in that: The second support frame (31) is fixedly connected to the cooling nozzle (5), the motor (32) is fixedly connected to the rotating shaft (33), the rotating shaft (33) is rotatably connected to the inner arc surface protective shell (34), the upper surface of the inner arc surface protective shell (34) is fixedly connected to the lower surface of the second support frame (31), the bearing (35) is rotatably connected to the rotating shaft (33), the first torsion spring (351) is fixedly connected to the outer surface of the rotating shaft (33), and the first scraper (353) is used to scrape the surfaces of the bearing (35) and the first semi-circular sleeve (352).

5. A machining apparatus for metal cutting according to claim 4, characterized in that: The outer surface of the spring (367) is fixedly connected to the inner wall of the chuck (332). The arc-shaped scraper frame (355) rotates on the outer surface of the bearing (35). The arc-shaped scraper frame (355) is in contact with the inner wall of the inner arc-shaped protective shell (34). The lower surface of the arc-shaped plate (362) is in contact with the upper surface of the counterweight (366). The outer surface of the stop post (365) is in contact with the outer surface of the arc-shaped plate (362). The torsion spring (351) is used to torsion the arc-shaped scraper frame (355). The sliding rod (36) is used to support the arc-shaped scraper frame (355).

6. A machining apparatus for metal cutting according to claim 3, characterized in that: The cleaning mechanism (4) includes a bent rod (41), which is fixedly connected to the lower surface of the support frame (31). A rotating frame (42) is rotatably connected to the outer surface of the bent rod (41). A torsion spring (43) is fixedly connected to the outer surface of the rotating frame (42). A scraper (431) is sleeved on the outer surface of the rotating frame (42). A bent plate (432) is fixedly connected to the upper surface of the rotating frame (42). A brush (433) is fixedly connected to the outer surface of the bent plate (432). The brush (433) contacts the outer surface of the chuck (331). The scraper (431) and the brush (433) are used to clean the chuck (331).

7. A machining apparatus for metal cutting according to claim 6, characterized in that: The cleaning mechanism (4) also includes a screw (44), which is rotatably connected to a rotating frame (42). A telescopic baffle (441) is fixedly connected inside the rotating frame (42). A friction disc (442) is fixedly connected to the outer surface of the bent rod (41). A friction sleeve (443) is snapped onto the outer surface of the friction disc (442). A rubber sleeve (444) is fixedly connected to the outer surface of the friction sleeve (443). The rubber sleeve (444) is used to protect the contact between the friction disc (442) and the friction sleeve (443).

8. A machining apparatus for metal cutting according to claim 7, characterized in that: The outer surface of the second torsion spring (43) is fixedly connected to the outer surface of the second scraper (431), the outer surface of the telescopic baffle (441) is fixedly connected to the outer surface of the friction sleeve (443), the second rubber sleeve (444) is sleeved with the friction disc (442), and the screw (44) is used to push the friction sleeve (443).

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