Stainless steel machine for polishing cutting of workpieces

Abstract

The present application relates to laser cutting machine tool technical field, disclose a stainless steel machine tool for workpiece polishing cutting, containing through three-dimensional moving platform drive installation sliding block, the installation sliding block is installed with laser, and the laser has coaxial nozzle;Workpiece surface is equipped with protective film;Controllable windowing unit is used for forming a long narrow window band on the protective film along the neighborhood of the predetermined cutting track and retaining the protective film edge on both sides;And, the suction hood is arranged around the laser, the bottom is equipped with apron and communicates with the external exhaust unit.The present application is through "long narrow windowing- quasi-closed channel" integrated design, the two sides protective film edge is used as natural side wall, with annular apron and workpiece surface form quasi-closed channel, and cooperate with the two-stage electromagnetic valve gating suction, make cutting fume and particle be bound above the window band and directional suction to the suction hood, realize "cutting clean" surface state.

Description

Technical Field

[0001] This invention relates to the field of laser cutting machine tool technology, specifically to a stainless steel machine tool for workpiece polishing and cutting. Background Technology

[0002] Laser cutting, due to its small heat-affected zone, narrow kerf, and high efficiency, has been widely used for shaping and drilling stainless steel plates. Typical equipment includes a three-axis or gantry-type moving platform, a beam shaping / scanning assembly, and coaxial nozzles for ejecting process gases (nitrogen, air, or inert gas). The workpiece is placed in a clamping fixture or grid bed. During processing, molten or vaporized metal and flux produce spatter, vapor, and particles ranging in size from submicron to tens of micrometers. These particles easily form redepositions and discoloration bands on the plate surface, increasing the cost of subsequent polishing and cleaning.

[0003] To reduce pollution, existing technologies mainly employ the following methods:

[0004] (1) Increase the nozzle air pressure or use a side-blowing "air knife" to try to push the molten slag out of the cut;

[0005] (2) Install fixed exhaust hoods / negative pressure chambers above the work area or below the workbench to extract smoke and dust;

[0006] However, the above solutions still have the following common problems:

[0007] First, the surface source open flow field: that is, the area near the nozzle is an open space. After the jet airflow forms a boundary layer on the plate surface, the smoke and dust particles are easily diffused along the circumference of the plate surface. The fixed exhaust hood has low collection efficiency because it is far from the cut and its relative position remains unchanged.

[0008] For parts requiring a mirror finish or fine polishing, these issues will directly increase the workload of subsequent polishing and bring the risk of unstable quality. Summary of the Invention

[0009] The purpose of this invention is to provide a stainless steel machine tool for polishing and cutting workpieces, so as to solve at least one technical problem existing in the prior art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a stainless steel machine tool for polishing and cutting workpieces, comprising a mounting slider driven by a three-dimensional moving platform, wherein a laser is mounted on the mounting slider and the laser has a coaxial nozzle;

[0011] The workpiece surface is covered with a protective film;

[0012] A controllable window opening unit is used to form a narrow window strip in the vicinity of the protective film along a predetermined cutting trajectory while retaining the edges of the protective film on both sides.

[0013] And, a suction shroud arranged around the laser, with a skirt at the bottom and connected to an external suction unit;

[0014] During the cutting process, the skirt, the workpiece surface, and the edge of the protective film together define a quasi-closed channel extending along the narrow window strip, so as to directionally draw the smoke and particles generated by the cutting into the skirt, thereby suppressing their circumferential diffusion and redeposition on the mounting slider plate surface.

[0015] Optionally, the outer wall of the mounting slider is fixed with a follower ring frame sleeved on the outer ring of the laser. The suction hood is designed in a ring shape at the bottom of the follower ring frame. A gas collecting ring is also designed above the follower ring frame. Multiple connecting pipes that are individually connected to the suction hood are connected between the gas collecting ring and the follower ring frame. Each of the connecting pipes is independently controlled by a solenoid valve. The gas collecting ring is connected to the external suction unit through a negative pressure conduit.

[0016] Optionally, the controllable window opening unit includes a rotating hollow tube rotatably installed in the inner ring of the follower ring frame, and the interior of the rotating hollow tube is set as an annular cavity with a hollow bottom. The inner wall of the rotating hollow tube is equipped with a piston ring that can be vertically adjusted. The bottom of the piston ring is fixed with two vertical plates, and each of the two vertical plates is equipped with a cutter.

[0017] Optionally, a swing plate is rotatably mounted on the inner ring wall of the rotating empty tube. The outer wall of the swing plate is provided with a sliding groove, which includes two vertical grooves and an arc-shaped groove that connects them in the middle. A limit pin is fixed on the outer wall of the swing plate located at the center of the arc-shaped groove. A flip plate is rotatably mounted on the inner wall of the vertical plate through a pin. The pin passes through and slides in the sliding groove. The outer wall of the flip plate is also provided with a long groove. The limit pin is inserted into and slides in the long groove. The cutter is fixed at the end of the flip plate.

[0018] Optionally, a constant pressure wheel is rotatably mounted on the end of the flip plate near the cutter, and the tip of the cutter extends beyond the constant pressure wheel by the same length as the thickness of the protective film.

[0019] Optionally, it also includes a controller for controlling the rotation adjustment of the rotating tube, and the controller can adjust the rotation angle of the rotating tube according to the cutting trajectory so that the two cutters can always be parallel to the cutting trajectory.

[0020] Optionally, the controllable windowing unit may use a laser to perform a double-circle scan along the equidistant offset line of the cutting trajectory with low-power laser, or to perform a surface-filling scan on the window area.

[0021] Optionally, the bottom of the mounting slider is provided with a distance sensor and cooperates with the follow-up Z-axis to maintain a constant gap between the skirt and the workpiece surface.

[0022] Optionally, it also includes a sacrificial strip slot and an air extraction pipe connected to the extraction unit below the cutting path for back-side slag removal during the penetration stage.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] I. This invention utilizes an integrated design of "narrow window-quasi-closed channel" to use the edges of the protective film on both sides as natural sidewalls, which together with the annular skirt and the workpiece surface form a quasi-closed channel 1-3 mm high. With the help of two solenoid valves at the front and rear, the cutting fumes and particles are trapped above the window strip and directionally drawn into the suction hood, reducing the amount of redeposition on the board surface, shortening the width of the discoloration band, and achieving a "clean after cutting" surface condition.

[0025] Second, this invention uses a dual-mode controllable window opening unit (mechanical flip-cutting blade or low-power laser scanning) to remove only the protective film in the vicinity of the cut before cutting, leaving a 0.05-0.15 m high film edge as a flow field baffle. The flip-cutting recovery and constant pressure wheel limiting structure ensure that the film cut is neat and does not damage the substrate. The laser scanning mode is non-contact and residue-free. Both schemes further reduce the amount of material removed by subsequent polishing, significantly reducing the cost of secondary processing. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 For the present invention Figure 1 Enlarged view of point A in the image;

[0028] Figure 3 This is an enlarged perspective view of the follower ring frame and its structure according to the present invention;

[0029] Figure 4 This is a sectional perspective view of the follower ring frame of the present invention;

[0030] Figure 5 Exploded three-dimensional representation of the cutting blade switching structure of the present invention Figure 1 ;

[0031] Figure 6 Exploded three-dimensional representation of the cutting blade switching structure of the present invention Figure 2 ;

[0032] Figure 7 This is a schematic diagram showing the state of the cutter in the retracted state of the present invention;

[0033] Figure 8 This is a schematic diagram showing the state of the flip plate during the flipping process of the present invention;

[0034] Figure 9 This is a schematic diagram showing the state of the cutter of the present invention when it is in the cutting state;

[0035] Figure 10 This is a schematic diagram of the quasi-closed channel of the present invention.

[0036] In the diagram: 1. Three-dimensional moving platform; 2. Mounting slider; 3. Laser; 4. Follow-up circular frame; 5. Suction hood; 6. Skirt; 7. Gas collecting ring; 8. Connecting pipe; 9. Solenoid valve; 10. Negative pressure conduit; 11. Rotating empty pipe; 12. Piston ring; 13. Vertical plate; 14. Flipping plate; 15. Swinging plate; 16. Limit pin; 17. Slide groove; 18. Pin; 19. Constant pressure wheel; 20. Cutter; 21. Long groove; 22. Workpiece; 23. Quasi-closed channel. Detailed Implementation

[0037] 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.

[0038] Please see Figures 1 to 10 The present invention provides a technical solution: a stainless steel machine tool for polishing and cutting workpieces, comprising a mounting slider 2 driven by a three-dimensional moving platform 1, a laser 3 mounted on the mounting slider 2, and the laser 3 having a coaxial nozzle.

[0039] A protective film is provided on the surface of workpiece 22;

[0040] A controllable window opening unit is used to form a narrow window strip in the vicinity of a predetermined cutting trajectory on the protective film while retaining the edges of the protective film on both sides.

[0041] And, a suction shroud 5 arranged around the laser 3, with a skirt 6 at the bottom that is connected to the external suction unit;

[0042] During the cutting process, the skirt 6, the surface of the workpiece 22, and the edge of the protective film together define a quasi-closed channel 23 extending along the narrow window strip, so as to directionally draw the smoke and particles generated by the cutting into the skirt 6, thereby suppressing their circumferential diffusion and redeposition on the mounting slider 2 plate.

[0043] When using this stainless steel machine tool, the workpiece 22 is first laser-cut, and then the cut area is polished. In order to reduce the impact of the laser cutting process on the subsequent polishing process, it is necessary to treat the smoke and particles generated by the laser during the cutting process. The specific methods are as follows:

[0044] First, a narrow window strip is formed on the protective film of workpiece 22 along the neighborhood of the predetermined cutting trajectory using a controllable window opening unit, while retaining the edges of the protective film on both sides. Then, the protective film in the narrow window strip area is peeled off to avoid the problem of the film easily rolling up, burning and sticking during the subsequent laser cutting process.

[0045] Then the three-dimensional moving platform 1 drives the mounting slider 2 and the laser 3 to move and cut along the predetermined cutting trajectory. During the cutting process, the coaxial nozzle on the laser 3 sprays out protective gas such as inert gas, which blows the smoke and particles generated by the laser cutting downwards. The skirt 6, the surface of the workpiece 22 and the edge of the protective film together define a quasi-closed channel 23 extending along the narrow window strip, which directionally draws the smoke and particles generated by the cut into the skirt 6 to suppress its circumferential diffusion and redeposition on the surface of the mounting slider 2.

[0046] It is worth mentioning that although the edges of the protective films on both sides are only about 0.05 to 0.15 mm high, they are sufficient to block lateral suction within the 1-3 mm high interlayer formed between the skirt 6 and the surface of the workpiece 22. This restricts the airflow to the narrow channel above the window strip. Furthermore, the skirt 6 at the bottom of the suction hood 5 maintains a small gap of 1-3 mm with the workpiece 22. Together with the film edge and the plate surface, a quasi-closed channel 23 is formed with a hood on top, a plate below, and film edges on both sides. The nozzle airflow pushes the splash into the narrow window strip, and is then directionally sucked into the hood by negative pressure to achieve a directional guiding effect. This reduces the formation of redeposit and discoloration bands on the plate surface, thereby reducing the cost of subsequent polishing and cleaning.

[0047] It is worth noting that by "creating a polishable compatible surface through cutting," the same protective film simultaneously performs three functions:

[0048] Mechanical barrier—prevents splashes from directly impacting the substrate;

[0049] The flow field wall, together with the suction hood 5, forms a "quasi-closed channel 23" that guides the smoke and dust to the exhaust port.

[0050] The process reference—the edge of the membrane window—becomes the zero reference for the subsequent polishing bias trajectory, eliminating the need for secondary edge finding.

[0051] In one preferred embodiment, an implementation method and control method for the suction cover 5 are provided;

[0052] The outer wall of the mounting slider 2 is fixed with a follower ring frame 4 that is sleeved on the outer ring of the laser 3. The suction hood 5 is designed in a ring shape at the bottom of the follower ring frame 4. A gas collecting ring 7 is designed above the follower ring frame 4. Multiple connecting pipes 8 that are individually connected to the suction hood 5 are connected between the gas collecting ring 7 and the follower ring frame 4. Each connecting pipe 8 is independently controlled by a solenoid valve 9. The gas collecting ring 7 is connected to the external suction unit through a negative pressure conduit 10.

[0053] For details, please refer to [link / reference]. Figure 3 During the extraction process, the external extraction unit draws air through the negative pressure conduit 10, and the gas collection ring 7 and connecting pipe 8 apply negative pressure to multiple extraction hoods 5 to extract smoke and particles in a directional manner.

[0054] In order to further improve the directional flow effect, that is, to draw the smoke and dust from the semi-closed channel 23 into the suction hood 5, each connecting pipe 8 is independently controlled by the solenoid valve 9. On the cutting trajectory, the connecting pipes 8 before and after the laser 3 are opened by the solenoid valve 9, activating only the upstream and downstream sections of the tangential direction of the blade path. In this way, by "selecting only the upstream and downstream sections", two semi-closed channels 23 are formed by aligning with the narrow window strip. The smoke and dust and particles are quickly drawn into the hood along the semi-closed channel 23. Compared with "full ring normally open" or "single port fixed suction", it can further improve the near-source capture efficiency.

[0055] Meanwhile, the interlayer flow, jointly defined by the gate section and the membrane edge, can confine the gas and solid phases in the window zone region, thereby reducing the quality of surface redeposition and effectively reducing the width of the color-changing band, leaving a cleaner boundary for subsequent polishing.

[0056] Example 1 provides an implementation of a controllable window opening unit based on the above-described implementation;

[0057] The controllable window opening unit includes a rotating hollow tube 11 rotatably installed in the inner ring of the follower ring frame 4, and the interior of the rotating hollow tube 11 is a ring-shaped cavity with a hollow bottom. The inner wall of the rotating hollow tube 11 is equipped with a piston ring 12 that can be vertically adjusted. The bottom of the piston ring 12 is fixed with two vertical plates 13, and each of the two vertical plates 13 is equipped with a cutter 20.

[0058] For details, please refer to [link / reference]. Figure 4 Before laser cutting, the piston ring 12 is adjusted by external structure to move up and down. The vertical plate 13 and the cutter 20 move up and down by moving up and down so that the cutter 20 contacts the protective film. The narrow window strip is cut on the protective film by two cutters 20 designed side by side.

[0059] After cutting, the piston ring 12 drives the vertical plate 13 and the cutter 20 to retract back into the rotating empty tube 11, thus preventing smoke and particles from adhering to the cutter 20.

[0060] The piston ring 12 can be adjusted by pneumatic means. For example, the piston ring 12 and the rotating empty tube 11 form a sealed space. By injecting or evacuating air into the sealed space through an external pneumatic structure (such as an air pump), a high pressure or negative pressure is formed inside, which in turn drives the piston ring 12 to move back and forth in the rotating empty tube 11 for adjustment.

[0061] In a further preferred embodiment, a telescopic mechanism for the cutter 20 is provided;

[0062] A swing plate 15 is rotatably mounted on the inner ring wall of the rotating empty tube 11. A groove 17 is provided on the outer wall of the swing plate 15. The groove 17 includes two vertical grooves and an arc-shaped groove that is connected in the middle. A limit pin 16 is fixed on the outer wall of the swing plate 15 located at the center of the arc-shaped groove. A flip plate 14 is rotatably mounted on the inner wall of the vertical plate 13 through a pin 18. The pin 18 passes through and slides in the groove 17. A long groove 21 is also provided on the outer wall of the flip plate 14. The limit pin 16 is inserted into and slides in the long groove 21. The cutter 20 is fixed at the end of the flip plate 14.

[0063] For details, please refer to [link / reference]. Figure 5 and Figure 6 When the piston ring 12 moves the vertical plate 13 downward, it will cause the flip plate 14 to move downward. Simultaneously, the pin 18 will slide downward within the groove 17, and the limiting pin 16 will also slide within the long groove 21. When the pin 18 slides to the arc-shaped groove position of the groove 17, it will cause the flip plate 14 to rotate around the limiting pin 16 as the center. Figure 8 As shown;

[0064] When the pin 18 slides back to the lower half of the vertical groove of the slide 17, the flip plate 14 completes a 180-degree flip, so that the cutter 20 at its end is flipped to a downward position. Figure 9 The state shown is to complete the subsequent cutting process;

[0065] After cutting, the piston ring 12 and the vertical plate 13 move upwards and reset. The flipping plate 14 completes a 180-degree reset and flipping through the sliding engagement of the pin 18 and the slide groove 17, as well as the sliding engagement of the limit pin 16 and the long groove 21, until it is reset to its original position. Figure 7 The state shown;

[0066] In this way, by flipping the blade 20 to switch its state, the blade 20 can be kept as far away from the cutting area below as possible after the cutting is finished, which further avoids residue and dust particles adhering to the blade surface, prevents the protective film from being scratched during subsequent cutting, and ensures subsequent cutting efficiency.

[0067] In one preferred embodiment, a constant pressure wheel 19 is rotatably mounted on the end of the flip plate 14 near the cutter 20, and the tip of the cutter 20 extends beyond the constant pressure wheel 19 by the same length as the thickness of the protective film.

[0068] For details, please refer to [link / reference]. Figure 6By installing a constant pressure roller 19 at the end of the flip plate 14, when the cutter 20 contacts and cuts the protective film, the constant pressure roller 19 can limit the cutting depth of the cutter 20, so that the cutter 20 can cut the protective film while avoiding scratches on the workpiece 22, and also reducing the difficulty of the subsequent polishing process.

[0069] In one preferred embodiment, a controller is also included for controlling the rotation adjustment of the rotating tube 11. The controller can adjust the rotation angle of the rotating tube 11 according to the cutting trajectory so that the two cutters 20 can always be parallel to the cutting trajectory.

[0070] Since the three-dimensional moving platform 1 moves along the X / Y axis when it drives the mounting slider 2 and the laser 3, and since the two cutters 20 are designed side by side, in order to avoid the moving trajectories of the two cutters 20 intersecting when the mounting slider 2 moves directly to a corner or turn, thus affecting the cutting of the narrow window strip;

[0071] Therefore, when installing slider 2 to change the trajectory, the controller adjusts the rotation angle of the rotating tube 11 according to the change of the cutting trajectory, so that the two cutters 20 can always be parallel to the cutting trajectory in the next segment of the trajectory, thereby ensuring the formation of the narrow window strip;

[0072] The rotation adjustment of the rotating tube 11 can be controlled by a servo motor, and the angle and direction of its rotation adjustment can be controlled by a controller.

[0073] Example 2 differs from Example 1 in that it provides a second implementation method for the controllable window opening unit;

[0074] The controllable window opening unit uses laser 3 to perform double-circle scanning along the equidistant offset lines of the cutting trajectory with low-power laser, or to perform surface filling scanning on the window area.

[0075] As can be seen from the above, the formation of the narrow window strip is achieved by mechanical cutting with cutter 20. Alternatively, it can be achieved by laser 3 performing double-circle scanning along the equidistant offset line of the cutting trajectory with low-power laser, or by performing surface-filling scanning on the window strip area. This method cuts only the film without melting the plate. Moreover, the laser cutting method is accurate in positioning and can take the median or lower limit of the upper interval, which can also reduce the design of mechanical structures.

[0076] In one preferred embodiment, the bottom of the mounting slider 2 is provided with a distance sensor and cooperates with the follow-up Z-axis to maintain a constant gap between the skirt 6 and the surface of the workpiece 22.

[0077] In one preferred embodiment, a sacrificial strip slot and an air extraction pipe are provided below the cutting path and communicate with the extraction unit for back-side slag removal during the penetration stage.

[0078] By adding a sacrificial strip slot and an exhaust pipe below the workpiece 22, slag is discharged from the back during the penetration stage. Combined with the aforementioned directional guidance of fumes, this minimizes the residue of molten slag, thereby improving the cutting accuracy and preparing for the subsequent polishing process.

[0079] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel machine tool for polishing and cutting workpieces, comprising a mounting slide (2) driven by a three-dimensional moving platform (1), wherein a laser (3) is mounted on the mounting slide (2), and the laser (3) has a coaxial nozzle, characterized in that: The surface of the workpiece (22) is provided with a protective film; A controllable window opening unit is used to form a narrow window strip in the vicinity of the protective film along a predetermined cutting trajectory while retaining the edges of the protective film on both sides. And, a suction shroud (5) arranged around the laser (3) has a skirt (6) at its bottom and is connected to an external suction unit; During the cutting process, the skirt (6), the surface of the workpiece (22) and the edge of the protective film together define a quasi-closed channel (23) extending along the narrow window strip, so as to draw the smoke and particles generated by the cutting into the skirt (6) in a directional manner, so as to suppress their circumferential diffusion and redeposition on the mounting slider (2) plate. On the cutting trajectory, the connecting pipe (8) before and after the laser (3) is opened by the solenoid valve (9), and only the upstream and downstream sections of the tangential direction of the tool path are activated. In this way, two quasi-closed channels (23) are formed by "selecting only the upstream and downstream sections" and aligning with the narrow window strip. Smoke and particles are quickly drawn into the suction hood along the quasi-closed channels (23). The outer wall of the mounting slider (2) is fixed with a follower ring frame (4) sleeved on the outer ring of the laser (3). The suction hood (5) is designed in a ring shape at the bottom of the follower ring frame (4). A gas collecting ring (7) is also designed above the follower ring frame (4). Multiple connecting pipes (8) that are individually connected to the suction hood (5) are connected between the gas collecting ring (7) and the follower ring frame (4). Each connecting pipe (8) is independently controlled by a solenoid valve (9). The gas collecting ring (7) is connected to the external suction unit through a negative pressure conduit (10). The controllable window opening unit includes a rotating hollow tube (11) rotatably installed in the inner ring of the follower ring frame (4), and the interior of the rotating hollow tube (11) is a ring-shaped cavity with a hollow bottom. The inner wall of the rotating hollow tube (11) is equipped with a piston ring (12) that can be vertically adjusted. The bottom of the piston ring (12) is fixed with two vertical plates (13), and each of the two vertical plates (13) is equipped with a cutter (20).

2. The stainless steel machine tool for polishing and cutting workpieces according to claim 1, characterized in that: The inner ring wall of the rotating tube (11) is rotatably mounted with a swing plate (15). The outer wall of the swing plate (15) is provided with a sliding groove (17). The sliding groove (17) includes two vertical grooves and an arc groove that is connected in the middle. The outer wall of the swing plate (15) located at the center of the arc groove is fixed with a limit pin (16). The inner wall of the vertical plate (13) is rotatably mounted with a flip plate (14) through a pin (18). The pin (18) passes through and slides in the sliding groove (17). The outer wall of the flip plate (14) is also provided with a long groove (21). The limit pin (16) is inserted into and slides in the long groove (21). The cutter (20) is fixed at the end of the flip plate (14).

3. The stainless steel machine tool for polishing and cutting workpieces according to claim 2, characterized in that: The end of the flip plate (14) near the cutter (20) is also rotatably mounted with a constant pressure wheel (19), and the tip of the cutter (20) extends beyond the constant pressure wheel (19) by the same length as the thickness of the protective film.

4. The stainless steel machine tool for polishing and cutting workpieces according to claim 1, characterized in that: It also includes a controller for controlling the rotation adjustment of the rotating tube (11), and the controller can adjust the rotation angle of the rotating tube (11) according to the cutting trajectory so that the two cutters (20) can always be parallel to the cutting trajectory.

5. The stainless steel machine tool for polishing and cutting workpieces according to claim 1, characterized in that: The controllable window opening unit is scanned in two circles by a laser (3) with low power laser along the equidistant offset line of the cutting trajectory, or the window area is filled by surface scanning.

6. The stainless steel machine tool for polishing and cutting workpieces according to any one of claims 1-5, characterized in that: The mounting slider (2) is equipped with a distance sensor at its bottom and works in conjunction with the follow-up Z-axis to maintain a constant gap between the skirt (6) and the surface of the workpiece (22).

7. The stainless steel machine tool for polishing and cutting workpieces according to any one of claims 1-5, characterized in that: It also includes a sacrificial strip slot and an air extraction pipe located below the cutting blade path and connected to the extraction unit, for back-side slag removal during the penetration stage.

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