An automatic cutting system for compressor housings and method of operation thereof

Abstract

The application discloses an automatic cutting system for a compressor shell and an operation method thereof, and relates to the technical field of metal recovery. The automatic cutting system for the compressor shell comprises a frame, a clamping and rotating mechanism installed on the frame, and an automatic cutting mechanism arranged on the frame and used for automatically cutting the irregular compressor shell at a constant depth.

Description

Technical Field

[0001] This invention relates to the field of metal recycling technology, and in particular to an automatic compressor casing cutting system and its operating method. Background Technology

[0002] In the recycling process of refrigeration equipment (such as air conditioners and refrigerators), the compressor, as a core component, has high recycling value and environmental protection requirements. Disassembling the compressor casing is a crucial step in the recycling process. Its purpose is to separate the casing from internal precision components (such as motors, pump bodies, and valve plates) so that the metal casing can be melted down and recycled, while simultaneously recovering high-value internal parts or performing harmless treatment. However, currently, the industry commonly uses manual operation of cutting machines for casing disassembly.

[0003] Because compressor casings are often irregularly shaped (such as cylindrical, elliptical, or irregularly shaped structures), it is difficult to stably control the cutting path and depth during manual operation. Specifically, operators need to rely on experience to judge the cutting progress, but the distance between the compressor casing and internal components (such as motor stator, crankshaft, etc.) is usually only 5-10mm. Cutting too deep may damage the internal precision structure, leading to the scrapping of core components. In addition, manual operation is labor-intensive.

[0004] Therefore, this application provides an automatic compressor housing cutting system and its operating method to meet the requirements. Summary of the Invention

[0005] The purpose of this application is to provide an automatic compressor housing cutting system and its operation method, which solves the technical problem that existing manual cutting cannot accurately control the cutting path and depth.

[0006] To achieve the above objectives, this application provides the following technical solution: an automatic compressor housing cutting system, comprising a frame, on which a clamping and rotating mechanism is mounted, and an automatic cutting mechanism is also provided for automatically cutting irregularly shaped compressor housings to a constant depth. The automatic cutting mechanism is configured in two sets, arranged opposite to each other on both sides of the clamping and rotating mechanism.

[0007] As a preferred embodiment of this invention, the automatic cutting mechanism includes a cutting cylinder mounted on a U-shaped fixed base, a track plate linearly slidably mounted on the U-shaped fixed base, and a mounting plate slidably mounted on a mounting base via a slider.

[0008] The track plate is fixedly connected to the output end of the cutting cylinder, and the mounting base is fixedly mounted on the track plate;

[0009] A motor-driven cutting blade is mounted on the mounting plate, and a depth-limiting roller is rotatably arranged directly below the cutting blade. The rightmost end of the depth-limiting roller is located to the left of the rightmost end of the cutting blade, and the transverse axis of the depth-limiting roller and the transverse axis of the cutting blade are located in the same vertical plane.

[0010] A column is slidably provided on the mounting base, and a weight is fixed at the upper end of the column. The weight is movably connected to the mounting plate through a movable rod. The lower end of the column passes through a rectangular opening at the upper end of the U-shaped fixing base and is connected to a contact roller. The contact roller rolls against the upper end of a support plate in the inner cavity of the U-shaped fixing base. A lifting cylinder is provided on the right side of the support plate.

[0011] As a preferred embodiment of this invention, an anti-collision blade mechanism is also provided to slow down the cutting blade during the initial movement phase, preventing the rapidly moving cutting blade from being damaged by a sudden high-stress impact with the compressor housing.

[0012] As a preferred embodiment of this embodiment, the anti-collision knife mechanism includes two sets of plates fixedly disposed at the lower end of the mounting base, a rotating shaft is rotatably disposed between the two sets of plates, and a cam with an elastic wear-resistant pad wrapped on its outer surface is fixedly mounted on the rotating shaft. An elastic damping ring is provided at the rotatable connection between the rotating shaft and the plates.

[0013] One set of the plates has an upper baffle and a lower baffle arranged vertically on the end face near the cam, and a stop bar is provided on the cam;

[0014] A raised flat plate is provided on the plane of the left end of the column.

[0015] In a preferred embodiment of this invention, the raised planar plate includes an upper raised planar plate and a lower raised planar plate respectively arranged vertically. The raised height of the upper raised planar plate is higher than that of the lower raised planar plate. The lower end of the upper raised planar plate and the upper end of the lower raised planar plate are connected by an inclined plate.

[0016] In a preferred embodiment of this invention, the length ratio of the upper protruding flat plate to the lower protruding flat plate is 1:2.

[0017] In a preferred embodiment of this invention, the clamping and rotating mechanism includes a turntable rotatably mounted on the frame, a centering clamp mounted on the upper end of the turntable, a toothed ring fixedly sleeved on the outer wall of the turntable, and the toothed ring meshing with a drive gear, the drive gear being mounted on the output end of a drive motor, and the drive motor being mounted on the frame.

[0018] An operating method for an automatic compressor housing cutting system includes the following steps;

[0019] S1: Place the compressor housing on the clamping and rotating mechanism and clamp it in place;

[0020] S2: Control the two sets of cutting cylinders to drive the corresponding mounting base to move. After the contact roller is completely separated from the support plate, the cutting cylinder stops working. Under the action of gravity, the column will move downward. The downward movement of the column will cause the movable rod to push the mounting plate forward. After moving a certain distance, the rotating cutting blade will contact the outer wall of the compressor housing and cut until the depth limiting roller contacts the outer wall of the compressor housing. Then, control the clamping rotation mechanism to drive the compressor housing to rotate and perform a full cut.

[0021] S3: After cutting is completed, the lifting cylinder works to lift the contact roller to the same level as the support plate. At this time, the cutting cylinder is controlled to work to drive the mounting base and mounting plate back to their original positions. Then the lifting cylinder returns to its original position. The operator removes the cut compressor housing and replaces it with an uncut compressor housing, and repeats the above operation.

[0022] In summary, the technical effects and advantages of this invention are as follows:

[0023] 1. The present invention has a reasonable structure and an automatic cutting mechanism that can automatically cut irregularly shaped compressor housings at a constant depth while rotating, effectively avoiding damage to internal components of the compressor housing and reducing labor intensity.

[0024] 2. In this invention, an anti-collision blade mechanism is also provided to lower the cutting blade when it begins to move, so as to prevent the rapidly moving cutting blade from being damaged by a sudden high-stress impact with the compression shell.

[0025] 3. In this invention, the raised flat plate includes an upper raised flat plate and a lower raised flat plate respectively arranged vertically. The coordination of the initial deceleration and the secondary deceleration is conducive to the cutting blade quickly making contact with the compressor housing for cutting while preventing high stress impact between the two. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the automatic cutting mechanism;

[0029] Figure 3 for Figure 2 A front view schematic diagram of the automatic cutting mechanism;

[0030] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure of the anti-collision knife mechanism;

[0031] Figure 5 for Figure 1 Schematic diagram of the clamping and rotating mechanism.

[0032] In the diagram: 1. Frame; 2. Clamping and rotating mechanism; 201. Centering fixture; 202. Turntable; 203. Gear ring; 204. Drive gear; 205. Drive motor; 3. Automatic cutting mechanism; 301. U-shaped fixed seat; 302. Cutting cylinder; 303. Track plate; 304. Mounting seat; 305. Mounting plate; 306. Slider; 307. Cutting blade; 308. Depth limiting roller; 309. Movable rod; 310. Weight; 311. Column; 312. Support plate; 313. Lifting cylinder; 314. Contact roller; 4. Anti-collision blade mechanism; 41. Plate; 42. Cam; 43. Upper baffle; 44. Lower baffle; 45. Plane; 46. Lower raised plane plate; 47. Upper raised plane plate; 48. Stop bar; 5. Compressor housing. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example: Reference Figure 1 The compressor housing automatic cutting system shown includes a frame 1, a clamping and rotating mechanism 2 mounted on the frame 1, and an automatic cutting mechanism 3 for automatically cutting irregularly shaped compressor housings 5 ​​to a constant depth. The automatic cutting mechanism 3 is configured in two sets, which are arranged opposite to each other on both sides of the clamping and rotating mechanism 2.

[0035] When in use, the compressor housing 5 can be placed directly on the clamping and rotating mechanism 2. The clamping and rotating mechanism 2 clamps and rotates the compressor housing 5, and controls the automatic cutting mechanism 3 to work. The compressor housing 5 with irregular shape is cut to a constant depth during rotation, which effectively avoids damage to the internal components of the compressor housing 5 and reduces labor intensity.

[0036] As a preferred embodiment of this example, Figure 1-3 As shown, the automatic cutting mechanism 3 includes a cutting cylinder 302 mounted on a U-shaped fixed base 301, a track plate 303 linearly slidably mounted on the U-shaped fixed base 301, and a mounting plate 305 slidably mounted on a mounting base 304 via a slider 306.

[0037] The track plate 303 is fixedly connected to the output end of the cutting cylinder 302, and the mounting base 304 is fixedly mounted on the track plate 303.

[0038] A motor-driven cutting blade 307 is mounted on the mounting plate 305, and a depth limiting roller 308 is rotatably arranged directly below the cutting blade 307. The rightmost end of the depth limiting roller 308 is located to the left of the rightmost end of the cutting blade 307, and the horizontal axis of the depth limiting roller 308 and the horizontal axis of the cutting blade 307 are located in the same vertical plane.

[0039] A column 311 is slidably provided on the mounting base 304, and a weight 310 is fixed at the upper end of the column 311. The weight 310 is movably connected to the mounting plate 305 through the movable rod 309. The lower end of the column 311 passes through the rectangular opening provided at the upper end of the U-shaped fixing base 301 and is connected to the contact roller 314. The contact roller 314 rolls against the upper end of the support plate 312 provided in the inner cavity of the U-shaped fixing base 301. A lifting cylinder 313 is provided on the right side of the support plate 312.

[0040] In use, the compressor housing 5 can be manually placed directly on the clamping and rotating mechanism 2. The clamping and rotating mechanism 2 clamps the compressor housing 5. At the same time, the output ends of the two sets of cutting cylinders 302 drive the track plate 303 to move relative to each other. When the track plate 303 moves, it drives the lower end of the column 311 to move laterally on the support plate 312. With the help of the movable rod 309, the mounting plate 305 and the column 311 can be pushed to move laterally together. After the contact roller 314 is completely disengaged from the support plate 312 (at this time, the cutting cylinder 301 stops working), the column 311 will move downward due to the gravity of the weight 310. The downward movement of the column 311 will cause the movable rod 309 to push the mounting plate 305 forward. After moving a certain distance, the rotating cutting blade 307 will contact the outer wall of the compressor housing and cut. As the cutting progresses, the cutting depth of the cutting blade increases due to the gravity of the weight 310. The cutting depth is gradually increased until the depth-limiting roller 308 contacts the outer wall of the compressor housing 5, at which point the cutting blade cannot move and the cutting depth remains constant. At this point, the clamping and rotating mechanism 2 is controlled to rotate the compressor housing 5. During the rotation, the weight of the weight 310 will cause the outer wall of the depth-limiting roller 308 to adhere tightly. As the depth-limiting roller 308 travels along the undulating outer wall of the compressor housing 5, the corresponding cutting roller 307 will move back and forth to ensure a constant cutting depth and avoid damage to the internal components of the compressor housing 5. After the cutting is completed, the lifting cylinder 313 is activated to lift the contact roller 314 to the same horizontal height as the support plate 312. At this point, the cutting cylinder 301 is activated to drive the mounting base 304 and mounting plate 305 back to their original positions, and then the lifting cylinder 313 returns to its original position. The operator removes the cut compressor housing 5 and replaces it with an uncut compressor housing 5, and repeats the above operation.

[0041] It should be noted that: First, the cutting cylinder 301, the lifting cylinder 313, the motor, and the clamping and rotating mechanism are all electrically connected to the PLC controller; Second, the rightmost end of the depth limiting roller 308 is located to the left of the rightmost end of the cutting blade 307, and the straight-line distance between the two rightmost ends is the cutting depth of the cutting roller 307. The transverse axis of the depth limiting roller 308 and the transverse axis of the cutting blade 307 are located in the same vertical plane. This design is intended to help to adapt and adjust the movement state of the cutting roller 307 in a timely manner according to the undulation of the compressor housing 5, so as to avoid damage to the internal components of the compressor housing 5; Third, the cutting blade 307 will only contact the compressor housing 5 and make a cut after the contact roller 314 has completely separated from the support plate 312, so that the weight of the weight 18 is completely converted into the driving force for the mounting plate 305 to move; Fourth, the motor-driven cutting blade 307 can be replaced by a pneumatic roller cutter (existing technology).

[0042] As a preferred embodiment of this invention, an anti-collision blade mechanism 4 is also provided to slow down the cutting blade 307 during the initial movement phase, preventing the rapidly moving cutting blade 307 from being damaged by a sudden high-stress impact with the compressor housing 5.

[0043] When the contact roller 314 is completely detached from the support plate 312, under the gravity of the weight 310, its column 311 will move downwards, driving the mounting plate 305 outwards via the movable rod 309. The downward movement of the column 311 involves an acceleration process, which in turn causes the mounting plate 305 to have a lateral acceleration process. If the lateral movement speed of the cutting blade 307 is too fast, it will cause a relatively intense collision with the compressor housing 5. Therefore, an anti-collision blade mechanism 4 is set to prevent the cutting blade 307 from being damaged by a momentary high-stress impact with the compressor housing 5.

[0044] As a preferred embodiment of this example, Figure 3 and Figure 4 As shown, the anti-collision knife mechanism 4 includes two sets of plates 41 fixedly installed at the lower end of the mounting base 304. A rotating shaft is rotatably installed between the two sets of plates 41, and a cam 42 with an outer surface covered with an elastic wear-resistant pad is fixedly installed on the rotating shaft. An elastic damping ring is provided at the rotational connection between the rotating shaft and the plate 41.

[0045] One set of plates 41 has an upper baffle 43 and a lower baffle 44 arranged vertically on the end face near the cam 42, and a stop bar 48 is provided on the cam 42;

[0046] A raised flat plate is provided on the plane 45 at the left end of the column 311.

[0047] During use (initially, the outer wall of the non-protruding part of the cam 42 abuts against the protruding flat plate), after the contact roller 314 completely disengages from the support plate 312, as the column 311 moves downward, the friction force will drive the cam 42 to rotate, causing the protruding part of the cam 42 to abut against the plane of the protruding flat plate (by the stop rod 48 abutting against the lower baffle, a constant friction is maintained between the protruding part and the protruding flat plate), thereby slowing down the downward movement speed of the column 311, ultimately reducing the lateral movement speed of the cutting blade 307 and reducing the instantaneous collision effect;

[0048] Before the cutting blade 307 is about to contact the compressor housing 5, its cam 42 separates from the raised flat plate. As the column 311 descends, the cutting depth of the cutting blade 307 gradually increases. At this time, the outer wall of the cam 42 does not contact the outer wall of the column 311. This reduces the resistance of the column 311 moving downward and increases the squeezing force between the cutting blade 307 and the outer wall of the compressor housing 5, which helps the cutting blade 307 to quickly reach a constant cutting depth.

[0049] As the lifting cylinder 3 lifts the contact roller 314, the outer surface of the cam 42 contacts the raised flat plate and rotates counterclockwise, causing the stop rod 48 to contact the upper baffle 43. Then the column 311 continues to move upward. At this time, the resistance encountered by the column 311 when moving upward is reduced, which means that the column 311 can return to the initial position more smoothly and prepare for the next cut. This reduces unnecessary energy loss and improves the overall operating efficiency of the equipment.

[0050] As a preferred embodiment of this example, Figure 4 As shown, the raised planar plate includes an upper raised planar plate 47 and a lower raised planar plate 46 respectively arranged vertically. The protrusion height of the upper raised planar plate 47 is higher than that of the lower raised planar plate 46. The lower end of the upper raised planar plate 47 and the upper end of the lower raised planar plate 46 are connected by an inclined plate.

[0051] When the column 311 begins to move downward, the protruding part on its cam 42 will come into contact with the lower protruding flat plate 46 to form friction, thereby reducing the downward speed of the column 311 (initial deceleration).

[0052] When the protrusion on the cam 42 slides into contact with the upper protruding flat plate 47, the pressure between the cam 42 and the upper protruding flat plate 47 increases because the protrusion height of the upper protruding flat plate 47 is higher than that of the lower protruding flat plate 46, thus enhancing the deceleration effect on the column 311 (secondary deceleration).

[0053] The deceleration intensity of the first deceleration is less than that of the second deceleration. The first deceleration decelerates the column 311 while ensuring that it has a certain speed (so that the cutting blade 307 quickly approaches the compressor housing 5). The second deceleration decelerates the cutting blade 307 quickly when it is about to contact the compressor housing 5, so as to avoid the cutting blade 307 forming a high-stress impact with the compressor housing 5.

[0054] The combination of initial and secondary deceleration facilitates the rapid contact and cutting of the cutting blade 307 with the compressor housing 5, while preventing high-stress impact between the two.

[0055] As a preferred embodiment of this example, Figure 4 As shown, the length ratio of the upper protruding flat plate 47 to the lower protruding flat plate 46 is 1:2.

[0056] Within this length ratio range, the cutting blade 307 achieves optimal results by quickly making contact with the compressor housing 5 for cutting while preventing high-stress impacts between the two.

[0057] As a preferred embodiment of this example, Figure 5As shown, the clamping and rotating mechanism 2 includes a turntable 202 rotatably mounted on the frame 1. A centering clamp 201 is installed on the upper end of the turntable 202. A toothed ring 203 is fixedly sleeved on the outer wall of the turntable 202, and the toothed ring 203 is meshed with the drive gear 204. The drive gear 204 is installed at the output end of the drive motor 205, and the drive motor 205 is installed on the frame 1.

[0058] In use, the compressor housing 5 is placed on the centering clamp 201 and clamped and fixed by the clamping plate on it. After that, when the cutting blades 307 on both sides form a constant cutting depth on the compressor housing 5, the drive motor 205 is controlled to drive the turntable 202 to rotate, so that the compressor housing 5 clamped on it can rotate one revolution to complete the cutting of the compressor housing 5.

[0059] It should be noted that the centering clamp 201 includes two clamping plates pushed by a cylinder, and the clamping surface of the clamping plates is consistent with the outer surface of the compressor housing 5. The compressor housing 5 is clamped and fixed by the relative movement of the two clamping plates pushed by the cylinder.

[0060] An operating method for an automatic compressor housing cutting system includes the following steps;

[0061] S1: Place the compressor housing 5 on the clamping and rotating mechanism 2 and clamp and fix it;

[0062] S2: Control the two sets of cutting cylinders 302 to drive the corresponding mounting base 304 to move. After the contact roller 314 is completely separated from the support plate 312, the cutting cylinder 302 stops working. Under the gravity of the weight 310, the column 311 will move downward. The downward movement of the column 311 will cause the movable rod 309 to push the mounting plate 305 forward. After moving a certain distance, the rotating cutting blade 307 will contact the outer wall of the compressor housing 5 and cut until the depth limiting roller 308 contacts the outer wall of the compressor housing 5. Then, control the clamping rotation mechanism 2 to drive the compressor housing to rotate and perform a full cut.

[0063] S3: After cutting is completed, the lifting cylinder 313 works to lift the contact roller 314 to the same horizontal height as the support plate 312. At this time, the cutting cylinder 302 is controlled to work to drive the mounting base 304 and the mounting plate 305 to return to their original positions. Then the lifting cylinder 313 returns to its original position. The operator removes the cut compressor housing 5 and replaces it with an uncut compressor housing 5, and repeats the above operation.

[0064] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is 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. An automatic compressor housing cutting system, comprising a frame (1) on which a clamping and rotating mechanism (2) is mounted, characterized in that: An automatic cutting mechanism (3) is also provided to automatically cut the irregularly shaped compressor housing (5) to a constant depth. The automatic cutting mechanism (3) is set in two sets and is arranged opposite to each other on both sides of the clamping and rotating mechanism (2). The automatic cutting mechanism (3) includes a cutting cylinder (302) mounted on a U-shaped fixed base (301), a track plate (303) linearly slidably mounted on the U-shaped fixed base (301), and a mounting plate (305) slidably mounted on a mounting base (304) via a slider (306). The track plate (303) is fixedly connected to the output end of the cutting cylinder (302), and the mounting base (304) is fixedly mounted on the track plate (303); A motor-driven cutting blade (307) is mounted on the mounting plate (305), and a depth limiting roller (308) is rotatably arranged directly below the cutting blade (307). The rightmost end of the depth limiting roller (308) is located to the left of the rightmost end of the cutting blade (307), and the transverse axis of the depth limiting roller (308) and the transverse axis of the cutting blade (307) are located in the same vertical plane. A column (311) is slidably provided on the mounting base (304), and a weight (310) is fixed at the upper end of the column (311). The weight (310) is movably connected to the mounting plate (305) through a movable rod (309). The lower end of the column (311) passes through the rectangular opening provided at the upper end of the U-shaped fixing base (301) and is connected to the contact roller (314). The contact roller (314) rolls against the upper end of the support plate (312) provided in the inner cavity of the U-shaped fixing base (301). A lifting cylinder (313) is provided on the right side of the support plate (312). An anti-collision blade mechanism (4) is also provided to slow down the cutting blade (307) during the initial movement phase, so as to prevent the fast-moving cutting blade (307) from being damaged by instantaneous high-stress impact with the compressor housing (5); The anti-collision knife mechanism (4) includes two sets of plates (41) fixedly disposed at the lower end of the mounting base (304). A rotating shaft is rotatably disposed between the two sets of plates (41), and a cam (42) with an elastic wear-resistant pad wrapped on its outer surface is fixedly installed on the rotating shaft. An elastic damping ring is provided at the rotatable connection between the rotating shaft and the plate (41). One of the plates (41) has an upper baffle (43) and a lower baffle (44) arranged vertically on the end face of the cam (42), and a stop bar (48) is provided on the cam (42). A raised flat plate is provided on the plane (45) at the left end of the column (311).

2. The automatic compressor housing cutting system according to claim 1, characterized in that: The raised planar plate includes an upper raised planar plate (47) and a lower raised planar plate (46) respectively arranged vertically. The protrusion height of the upper raised planar plate (47) is higher than that of the lower raised planar plate (46). The lower end of the upper raised planar plate (47) and the upper end of the lower raised planar plate (46) are connected by an inclined plate.

3. The automatic compressor housing cutting system according to claim 2, characterized in that: The length ratio of the upper protruding flat plate (47) to the lower protruding flat plate (46) is 1:

2.

4. The automatic compressor housing cutting system according to claim 1, characterized in that: The clamping and rotating mechanism (2) includes a turntable (202) rotatably mounted on the frame (1). A centering clamp (201) is installed on the upper end of the turntable (202). A toothed ring (203) is fixedly sleeved on the outer wall of the turntable (202), and the toothed ring (203) meshes with a drive gear (204). The drive gear (204) is installed at the output end of a drive motor (205), and the drive motor (205) is installed on the frame (1).

5. An operating method for the automatic compressor housing cutting system according to any one of claims 1-4, characterized in that: Includes the following steps; S1: Place the compressor housing (5) on the clamping and rotating mechanism (2) and clamp it in place; S2: Control the two sets of cutting cylinders (302) to drive the corresponding mounting base (304) to move. After the contact roller (314) is completely separated from the support plate (312), the cutting cylinder (302) stops working. Under the gravity of the weight (310), the column (311) will move downward. The downward movement of the column (311) will cause the movable rod (309) to push the mounting plate (305) forward. After moving a distance, the rotating cutting blade (307) will contact the outer wall of the compressor housing (5) and cut until the depth limiting roller (308) contacts the outer wall of the compressor housing (5). Then, control the clamping rotation mechanism (2) to drive the compressor housing to rotate and perform full cutting. S3: After cutting is completed, the lifting cylinder (313) works to lift the contact roller (314) to the same level as the support plate (312). At this time, the cutting cylinder (302) is controlled to work to drive the mounting base (304) and the mounting plate (305) to return to their original positions. Then the lifting cylinder (313) returns to its original position. The workers remove the cut compressor housing (5) and replace it with an uncut compressor housing (5), and repeat the above operation.

Images