Linear cutting CNC machining device, machining method and process

Abstract

The application provides a linear cutting CNC machining device and machining method and process, and relates to the technical field of CNC machining devices. The linear cutting CNC machining device comprises a CNC machine table, a spindle clamp, an arc-shaped spade, a clutch element and an elastic element. The spindle clamp moves linearly, the arc-shaped spade is arranged in the spindle clamp, the clutch element and the elastic element are arranged between the spindle clamp and the arc-shaped spade, and when the horizontal cutting resistance of the arc-shaped spade is less than or higher than a set value, the clutch element locks or unlocks the elastic element, so as to form a rigid connection or an elastic connection between the spindle clamp and the arc-shaped spade. The arc-shaped spade moves linearly to improve the quality of the product arc surface. When normal cutting is performed, the spindle clamp and the arc-shaped spade are rigidly connected, so as to ensure machining precision and surface quality. When the cutting resistance suddenly increases, the spindle clamp and the arc-shaped spade are elastically connected, so as to absorb impact energy and avoid blade collapse of the arc-shaped spade or damage of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of CNC machining equipment technology, and in particular to a linear cutting CNC machining equipment, machining method and process. Background Technology

[0002] Traditional CNC machine tools typically use rotary cutting when machining workpieces. During the machining process, the tool is driven by the spindle to rotate at high speed and cuts the workpiece surface along a preset path.

[0003] Because rotary cutting requires multiple passes to complete the forming of the entire arc surface, the resulting arc surface on the workpiece will always have uneven joints. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by proposing a linear cutting CNC machining device, machining method and process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A linear cutting CNC machining apparatus includes a CNC machine base, a spindle clamp, an arc-shaped scraper, a clutch element, and an elastic element. The spindle clamp is mounted on the CNC machine base and only moves linearly. The arc-shaped scraper is mounted inside the spindle clamp. The clutch element and the elastic element are disposed between the spindle clamp and the arc-shaped scraper. When the horizontal cutting resistance experienced by the arc-shaped scraper is less than or higher than a set value, the clutch element locks or unlocks the elastic element, thereby forming a rigid connection or an elastic connection between the spindle clamp and the arc-shaped scraper.

[0007] Preferably, the elastic element includes a rectangular box, a first spring, and a mounting plate. The mounting plate is slidably connected to the inner surface of the rectangular box, the first spring is fastened between the inner bottom surface of the rectangular box and the inner end surface of the mounting plate, and the arc-shaped scraper is detachably mounted on the bottom end of the mounting plate.

[0008] Preferably, the clutch element includes a U-shaped plate, a telescopic rod, a circular plate, a third spring, a metal ball, a circular hole, and a V-groove. The U-shaped plate is fixed to the side of the rectangular box, the telescopic rod is slidably connected to the middle of the U-shaped plate, the circular plate and the metal ball are fastened to both ends of the telescopic rod, the third spring is sleeved on the outside of the telescopic rod, and the third spring is fastened between the U-shaped plate and the circular plate. The circular hole is opened in the side wall of the rectangular box, the V-groove is opened on the side of the mounting plate, the position of the V-groove corresponds to the circular hole, and the opening direction of the V-groove faces the circular hole. The metal ball and the circular hole are slidably connected to each other and their center lines are coaxial.

[0009] Preferably, the third spring-driven metal ball portion is embedded in a V-shaped groove.

[0010] Preferably, the mounting plate has a mounting hole on its bottom surface opposite to the first spring, the end of the arc-shaped shovel is fitted into the inner side of the mounting hole, and the end of the arc-shaped shovel and the mounting plate are fastened together by positioning screws.

[0011] Preferably, a rectangular groove is provided in the middle of the inner end face of the mounting plate, a sliding plate is slidably connected in the rectangular groove, a second spring is fastened between the inner end face of the sliding plate and the inner bottom face of the rectangular groove, a through rectangular hole is provided in the middle of the inner bottom face of the rectangular box, the sliding plate is slidably connected to the inner surface of the rectangular hole, and a micro switch is fixedly installed on the lower side wall of the inner cavity of the spindle clamp.

[0012] Preferably, a lifting assembly is provided at the upper end of the inner cavity of the spindle clamp, the lifting assembly being used to drive the arc-shaped blade to move vertically up and down relative to the spindle clamp.

[0013] Preferably, the lifting assembly includes a servo motor, a lead screw, a lifting plate, grooves, and a connecting plate. The servo motor is fixedly installed on the upper end of the spindle clamp and its output shaft is fixedly connected to the upper end of the lead screw. The lead screw is located on the axis of the inner cavity of the spindle clamp and its outer side is threadedly connected to the middle of the lifting plate. Two grooves are symmetrically opened on the side wall of the inner cavity of the spindle clamp. The two ends of the lifting plate are slidably connected to the inner surface of the grooves. The connecting plate is fastened between the bottom end of the lifting plate and the upper end of the rectangular box.

[0014] Preferably, an audible and visual alarm is fixedly installed on the outside of the spindle clamp, and the audible and visual alarm and the micro switch are electrically connected to each other.

[0015] A linear cutting CNC machining method and process, based on the linear cutting CNC machining apparatus described above, comprises the following steps:

[0016] S1: Fix the workpiece on the CNC machine tool table and adjust the arc-shaped scraper to the predetermined cutting position;

[0017] S2: The spindle clamping device drives the arc-shaped scraper to make XYZ linear motion along the preset path, and performs linear cutting on the workpiece arc surface in a single pass. During normal cutting, the clutch element locks the elastic element, and the spindle clamping device and the arc-shaped scraper maintain a rigid connection.

[0018] S3: When the horizontal cutting resistance exceeds the set value, the elastic element automatically unlocks, absorbs the impact energy, and triggers an alarm.

[0019] Compared with the prior art, the beneficial effects of this invention are as follows: by using an arc-shaped scraper to make linear motion and pass through the machined surface in one cut, the joint marks caused by multiple passes or tool runout in traditional rotary cutting are effectively avoided, thereby giving the machined product arc surface higher surface smoothness and gloss; when the horizontal cutting resistance experienced by the arc-shaped scraper is less than the set value, the clutch element locks the elastic element, forming a rigid connection between the spindle clamp and the arc-shaped scraper to ensure machining accuracy and surface quality; when encountering hard points, burrs, or sudden changes in allowance, and the horizontal cutting resistance experienced by the arc-shaped scraper is higher than the set value, the clutch element unlocks the elastic element, forming an elastic connection between the spindle clamp and the arc-shaped scraper. The elastic element absorbs impact energy, preventing the arc-shaped scraper from chipping or the workpiece from being damaged. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the linear cutting CNC machining device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the external structure of the spindle clamping device in a linear cutting CNC machining apparatus according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the spindle clamping device in a linear cutting CNC machining apparatus according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the side structure of a rectangular box in a linear cutting CNC machining device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram showing the separation of the metal ball and the V-groove in the linear cutting CNC machining device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the arc-shaped shovel in the linear cutting CNC machining device according to an embodiment of the present invention.

[0026] Figure 7 for Figure 3 Enlarged view of the structure at point A in the image;

[0027] Figure 8 for Figure 4 Enlarged view of the structure at point B in the image.

[0028] In the diagram: 100, CNC machine tool; 200, spindle clamp; 300, servo motor; 301, lead screw; 302, lifting plate; 303, groove; 304, connecting plate; 400, rectangular box; 401, first spring; 402, mounting plate; 403, rectangular groove; 404, second spring; 405, sliding plate; 406, rectangular hole; 407, micro switch; 408, mounting hole; 500, arc-shaped scraper; 501, positioning screw; 600, U-shaped plate; 601, telescopic rod; 602, round plate; 603, third spring; 604, metal ball; 605, round hole; 606, V-groove. Detailed Implementation

[0029] 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.

[0030] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0031] like Figures 1-8 As shown, this embodiment of the invention provides a linear cutting CNC machining device, including a CNC machine tool 100, a spindle clamp 200, an arc-shaped scraper 500, a clutch element, and an elastic element. The spindle clamp 200 is mounted on the CNC machine tool 100 and only moves linearly. The arc-shaped scraper 500 is mounted inside the spindle clamp 200. The clutch element and the elastic element are disposed between the spindle clamp 200 and the arc-shaped scraper 500. When the horizontal cutting resistance experienced by the arc-shaped scraper 500 is less than or higher than a set value, the clutch element locks or unlocks the elastic element, thereby forming a rigid connection or an elastic connection between the spindle clamp 200 and the arc-shaped scraper 500.

[0032] In this embodiment, the original rotary spindle of the CNC machine tool 100 is replaced by a spindle clamp 200. During machining, the replaced spindle clamp 200 does not rotate, but only drives the arc-shaped scraper 500 to perform XYZ linear motion. Since the machining surface is completed in a single pass, the seams caused by multiple passes or tool runout in traditional rotary cutting are effectively avoided, resulting in a higher surface smoothness and gloss of the machined product's arc surface. During normal cutting, the arc-shaped scraper 500 experiences horizontal cutting resistance, which is transmitted to the spindle clamp 200 through the arc-shaped scraper 500. When the horizontal cutting resistance experienced by the arc-shaped scraper 500 is less than a set value, the clutch element locks the elastic element, at which point the elastic element does not function, creating a rigid connection between the spindle clamp 200 and the arc-shaped scraper 500. The connection ensures machining accuracy and surface quality. When encountering hard points, burrs, or sudden changes in allowance, the horizontal resistance of the arc-shaped scraper 500 increases sharply. At this time, the CNC system still forces the feed, and the horizontal extrusion force on the arc-shaped scraper 500 continues to increase. When the horizontal cutting resistance experienced by the arc-shaped scraper 500 is higher than the set value, the clutch element unlocks the elastic element. At this time, the elastic element plays a role, forming an elastic connection between the spindle clamp 200 and the arc-shaped scraper 500. The elastic element absorbs the impact energy and prevents the arc-shaped scraper 500 from chipping or the workpiece from being damaged.

[0033] By using the arc-shaped scraper 500 to move linearly and pass through the machined surface in one cut, the joint marks caused by multiple passes or tool runout in traditional rotary cutting are effectively avoided, resulting in a higher surface smoothness and gloss of the machined product's arc surface. When the horizontal cutting resistance experienced by the arc-shaped scraper 500 is less than the set value, the clutch element locks the elastic element, forming a rigid connection between the spindle clamp 200 and the arc-shaped scraper 500 to ensure machining accuracy and surface quality. When encountering hard points, burrs, or sudden changes in allowance, and the horizontal cutting resistance experienced by the arc-shaped scraper 500 is higher than the set value, the clutch element unlocks the elastic element, forming an elastic connection between the spindle clamp 200 and the arc-shaped scraper 500. The elastic element absorbs impact energy, preventing the arc-shaped scraper 500 from chipping or the workpiece from being damaged.

[0034] like Figure 3 and Figure 7 As shown, optionally, the elastic element includes a rectangular box 400, a first spring 401, and a mounting plate 402. The mounting plate 402 is slidably connected to the inner surface of the rectangular box 400, the first spring 401 is fastened between the inner bottom surface of the rectangular box 400 and the inner end surface of the mounting plate 402, and the arc-shaped scraper 500 is detachably mounted on the bottom end of the mounting plate 402.

[0035] In this embodiment, when encountering hard points, burrs, or sudden changes in allowance, the arc-shaped scraper 500 experiences a sharp increase in horizontal resistance. At this time, the CNC system still forces feed. When the horizontal cutting resistance experienced by the arc-shaped scraper 500 exceeds the set value, the clutch element unlocks the elastic element. At this time, the elastic element takes effect, and an elastic connection is formed between the spindle clamp 200 and the arc-shaped scraper 500. That is, the arc-shaped scraper 500 drives the mounting plate 402 to move towards the rectangular box 400, while continuously compressing the first spring 401. The first spring 401 absorbs the impact energy, preventing the arc-shaped scraper 500 from chipping or the workpiece from being damaged.

[0036] like Figure 4 and Figure 8 As shown, optionally, the clutch element includes a U-shaped plate 600, a telescopic rod 601, a circular plate 602, a third spring 603, a metal ball 604, a circular hole 605, and a V-groove 606. The U-shaped plate 600 is fixed to the side of the rectangular box 400. The telescopic rod 601 is slidably connected to the middle of the U-shaped plate 600. The circular plate 602 and the metal ball 604 are fastened to both ends of the telescopic rod 601. The third spring 603 is sleeved on the outside of the telescopic rod 601 and is fastened between the U-shaped plate 600 and the circular plate 602. The circular hole 605 is opened in the side wall of the rectangular box 400. The V-groove 606 is opened on the side of the mounting plate 402. The position of the V-groove 606 corresponds to the circular hole 605, and the opening direction of the V-groove 606 faces the circular hole 605. The metal ball 604 and the circular hole 605 are slidably connected to each other and their center lines are coaxial.

[0037] In this embodiment, in the initial state, under the elastic force of the third spring 603, the telescopic rod 601 drives the metal ball 604 through the circular hole 605 and partially embeds it into the V-groove 606 on the side of the mounting plate 402. At this time, the mounting plate 402 is locked in the initial position within the rectangular box 400. When the horizontal cutting resistance experienced by the arc-shaped scraper 500 is less than the set value, the locking force between the metal ball 604 and the V-groove 606 is sufficient to resist the backward movement tendency of the mounting plate 402, the elastic element is in the locked state, and a rigid connection is formed between the spindle clamp 200 and the arc-shaped scraper 500. When the horizontal cutting resistance experienced by the arc-shaped scraper 500 is greater than the set value, the mounting plate 402 experiences an increased backward thrust. This thrust acts on the metal ball 604 through the V-groove 606, generating a component force that overcomes the elastic force of the third spring 603. When the force exceeds the preload of the third spring 603, the metal ball 604 is squeezed out of the V-groove 606 and slides outward along the circular hole 605. At the same time, the circular plate 602 moves outward via the telescopic rod 601. At this time, the elastic element switches to the unlocked state, and the mounting plate 402 can slide inward within the rectangular box 400, compressing the first spring 401 for buffering, thus absorbing the impact energy.

[0038] like Figure 8As shown, optionally, the third spring 603 drives the metal ball 604 part of the structure to be embedded in the V-groove 606.

[0039] In this embodiment, the purpose of this design is to ensure that when the mounting plate 402 is subjected to a backward thrust, the metal ball 604 can be driven to slide outward along the circular hole 605 through the V-groove 606, so that the structure is reasonable.

[0040] like Figure 7 As shown, optionally, the bottom end face of the mounting plate 402 opposite to the first spring 401 is provided with a mounting hole 408, the end of the arc-shaped scraper 500 is fitted into the inner side of the mounting hole 408, and the end of the arc-shaped scraper 500 and the mounting plate 402 are fastened to each other by positioning screws 501.

[0041] In this embodiment, the arc-shaped scraper 500 and the mounting plate 402 are detachable from each other by the positioning screw 501.

[0042] like Figure 7 As shown, optionally, a rectangular groove 403 is provided in the middle of the inner end face of the mounting plate 402, and a slide plate 405 is slidably connected in the rectangular groove 403. A second spring 404 is fastened between the inner end face of the slide plate 405 and the inner bottom face of the rectangular groove 403. A through rectangular hole 406 is provided in the middle of the inner bottom face of the rectangular box 400, and the slide plate 405 is slidably connected to the inner surface of the rectangular hole 406. A micro switch 407 is fixedly installed on the lower side wall of the inner cavity of the spindle clamp 200.

[0043] In this embodiment, when encountering hard points, burrs, or sudden changes in allowance, and the horizontal cutting resistance exceeds the set value, the elastic element unlocks. Under the impact force, the mounting plate 402 slides into the rectangular box 400, driving the sliding plate 405 to move synchronously. After the end of the sliding plate 405 slides out of the rectangular hole 406, it presses against the micro switch 407. After the micro switch 407 is triggered, it sends an alarm signal to the control system of the CNC machine tool 100. When the sliding plate 405 presses the micro switch 407, if the mounting plate 402 continues to move into the rectangular box 400, the sliding plate 405 moves relative to the mounting plate 402 towards the rectangular groove 403 and simultaneously squeezes the second spring 404. The second spring 404 provides buffering to ensure that the mounting plate 402 moves normally into the rectangular box 400. When the elastic element unlocks, the first spring 401 and the second spring 404 absorb the impact energy to prevent the arc-shaped scraper 500 from chipping or the workpiece from being damaged. At the same time, an alarm is triggered to notify the staff to handle the situation.

[0044] like Figure 3 and Figure 6 As shown, optionally, a lifting assembly is provided at the upper end of the inner cavity of the spindle clamp 200. The lifting assembly is used to drive the arc-shaped shovel 500 to move vertically relative to the spindle clamp 200.

[0045] In this embodiment, when the CNC machine tool 100 needs to be cleaned, the arc-shaped scraper 500 is driven to rise vertically relative to the spindle clamp 200 by the lifting component, so that the arc-shaped scraper 500 enters the spindle clamp 200. Then, when the operator cleans the lower end of the spindle clamp 200, he / she can avoid being scratched by the arc-shaped scraper 500.

[0046] like Figure 3 and Figure 6 As shown, optionally, the lifting assembly includes a servo motor 300, a lead screw 301, a lifting plate 302, a groove 303, and a connecting plate 304. The servo motor 300 is fixedly installed on the upper end of the spindle clamp 200 and its output shaft is fixedly connected to the upper end of the lead screw 301. The lead screw 301 is located on the axis of the inner cavity of the spindle clamp 200 and its outer side is threadedly connected to the middle of the lifting plate 302. Two grooves 303 are symmetrically opened on the side wall of the inner cavity of the spindle clamp 200. The two ends of the lifting plate 302 are slidably connected to the inner surface of the groove 303. The connecting plate 304 is fastened between the bottom end of the lifting plate 302 and the upper end of the rectangular box 400.

[0047] In this embodiment, the servo motor 300 drives the lead screw 301 to rotate, which in turn drives the lifting plate 302 to rise and fall vertically relative to the inner cavity of the spindle clamp 200, and then drives the rectangular box 400 to rise and fall synchronously through the connecting plate 304, thereby driving the arc-shaped shovel 500 to rise and fall synchronously.

[0048] like Figure 1 and Figure 7 As shown, optionally, an audible and visual alarm is fixedly installed on the outside of the spindle clamp 200, and the audible and visual alarm and the micro switch 407 are electrically connected to each other.

[0049] In this embodiment, after the slide 405 moves and presses the micro switch 407, the circuit is closed, the sound and light alarm sounds and reminds the staff to handle the situation. Since the control circuit is existing technology, it will not be described in detail here.

[0050] like Figures 1-8 As shown, a linear cutting CNC machining method and process, based on the linear cutting CNC machining apparatus described above, comprises the following steps:

[0051] S1: Fix the workpiece on the CNC machine tool 100 worktable and adjust the arc-shaped scraper 500 to the predetermined cutting position;

[0052] S2: The spindle clamp 200 drives the arc-shaped scraper 500 to perform XYZ linear motion along the preset path, and performs linear cutting on the workpiece arc surface in a single pass. During normal cutting, the clutch element locks the elastic element, and the spindle clamp 200 and the arc-shaped scraper 500 maintain a rigid connection.

[0053] S3: When the horizontal cutting resistance exceeds the set value, the elastic element automatically unlocks, absorbs the impact energy, and triggers an alarm.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A linear cutting CNC machining device, characterized in that, The device includes a CNC machine tool (100), a spindle clamp (200), an arc-shaped scraper (500), a clutch element, and an elastic element. The spindle clamp (200) is mounted on the CNC machine tool (100) and only moves linearly. The arc-shaped scraper (500) is mounted inside the spindle clamp (200). The clutch element and the elastic element are disposed between the spindle clamp (200) and the arc-shaped scraper (500). When the horizontal cutting resistance experienced by the arc-shaped scraper (500) is less than or higher than a set value, the clutch element locks or unlocks the elastic element to form a rigid connection or an elastic connection between the spindle clamp (200) and the arc-shaped scraper (500).

2. The linear cutting CNC machining apparatus according to claim 1, characterized in that, The elastic element includes a rectangular box (400), a first spring (401), and a mounting plate (402). The mounting plate (402) is slidably connected to the inner surface of the rectangular box (400). The first spring (401) is fastened between the inner bottom surface of the rectangular box (400) and the inner end surface of the mounting plate (402). The arc-shaped scraper (500) is detachably mounted on the bottom end of the mounting plate (402).

3. The linear cutting CNC machining apparatus according to claim 1, characterized in that, The clutch element includes a U-shaped plate (600), a telescopic rod (601), a circular plate (602), a third spring (603), a metal ball (604), a circular hole (605), and a V-groove (606). The U-shaped plate (600) is fixed to the side of the rectangular box (400). The telescopic rod (601) is slidably connected to the middle of the U-shaped plate (600). The circular plate (602) and the metal ball (604) are fastened to both ends of the telescopic rod (601). The third spring (603) is sleeved on the telescopic rod. Outside the rod (601), the third spring (603) is fastened between the U-shaped plate (600) and the circular plate (602). The circular hole (605) is opened in the side wall of the rectangular box (400). The V-groove (606) is opened on the side of the mounting plate (402). The position of the V-groove (606) corresponds to the circular hole (605), and the opening direction of the V-groove (606) faces the circular hole (605). The metal ball (604) and the circular hole (605) are slidably connected to each other and their center lines are coaxial.

4. The linear cutting CNC machining apparatus according to claim 3, characterized in that, The third spring (603) drives the metal ball (604) to partially embed into the V-groove (606).

5. The linear cutting CNC machining apparatus according to claim 2, characterized in that, The mounting plate (402) has a mounting hole (408) on its bottom surface away from the first spring (401). The end of the arc-shaped shovel (500) is fitted into the inner side of the mounting hole (408). The end of the arc-shaped shovel (500) and the mounting plate (402) are fastened together by positioning screws (501).

6. The linear cutting CNC machining apparatus according to claim 2, characterized in that, A rectangular groove (403) is provided in the middle of the inner end face of the mounting plate (402). A sliding plate (405) is slidably connected in the rectangular groove (403). A second spring (404) is fastened between the inner end face of the sliding plate (405) and the inner bottom face of the rectangular groove (403). A through rectangular hole (406) is provided in the middle of the inner bottom face of the rectangular box (400). The sliding plate (405) is slidably connected to the inner surface of the rectangular hole (406). A micro switch (407) is fixedly installed on the lower side wall of the inner cavity of the spindle clamp (200).

7. The linear cutting CNC machining apparatus according to claim 6, characterized in that, The upper end of the inner cavity of the spindle clamp (200) is provided with a lifting component, which is used to drive the arc-shaped shovel (500) to rise and fall vertically relative to the spindle clamp (200).

8. The linear cutting CNC machining apparatus according to claim 7, characterized in that, The lifting assembly includes a servo motor (300), a lead screw (301), a lifting plate (302), a groove (303), and a connecting plate (304). The servo motor (300) is fixedly installed on the upper end of the spindle clamp (200), and its output shaft is fixedly connected to the upper end of the lead screw (301). The lead screw (301) is located on the axis of the inner cavity of the spindle clamp (200), and its outer side is threadedly connected to the middle of the lifting plate (302). Two grooves (303) are symmetrically opened on the side wall of the inner cavity of the spindle clamp (200). The two ends of the lifting plate (302) are slidably connected to the inner surface of the groove (303). The connecting plate (304) is fastened between the bottom end of the lifting plate (302) and the upper end of the rectangular box (400).

9. The linear cutting CNC machining apparatus according to claim 6, characterized in that, An audible and visual alarm is fixedly installed on the outside of the spindle clamp (200), and the audible and visual alarm and the micro switch (407) are electrically connected to each other.

10. A linear cutting CNC machining method and process, based on the linear cutting CNC machining apparatus as described in any one of claims 1-9, characterized in that, The steps are as follows: S1: Fix the workpiece on the CNC machine tool (100) worktable and adjust the arc-shaped shovel (500) to the predetermined cutting position; S2: The spindle clamp (200) drives the arc-shaped scraper (500) to make XYZ linear motion along the preset path, and performs linear cutting on the workpiece arc surface in a single pass. During normal cutting, the clutch element locks the elastic element, and the spindle clamp (200) and the arc-shaped scraper (500) maintain a rigid connection. S3: When the horizontal cutting resistance exceeds the set value, the elastic element automatically unlocks, absorbs the impact energy, and triggers an alarm.

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