High-precision layered cutting device and method for numerical control machining center

Abstract

The application relates to the technical field of numerical control machining centers, in particular to a high-precision layered cutting machining device and method of a numerical control machining center. The device comprises a device main body, a moving platform arranged in the device main body, a clamping seat arranged on the upper side of the moving platform, and a horizontal detection mechanism. The horizontal detection mechanism comprises a mounting plate arranged between the moving platform and the clamping seat. Through the design of the horizontal detection mechanism, the horizontal direction feed amount of a milling cutter of the numerical control machining center can be detected. When the horizontal direction feed amount of the milling cutter exceeds the standard, the first sliding ring is pulled to contact the contact switch through the elastic universal telescopic rod, so that the device main body controls the milling cutter to stop moving, the feed amount of the milling cutter is prevented from continuing to exceed the standard, and a cutter collision accident is prevented. Through the design of the avoiding mechanism, the workpiece can be rapidly moved away from the milling cutter, and a cutter collision accident is further prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control machining centers, and in particular to a high-precision layered cutting processing device and method for a numerical control machining center. Background Art

[0002] CNC machining center is a high-precision and high-efficiency manufacturing equipment. With the continuous improvement of manufacturing automation technology, CNC machining center is also constantly developing towards higher efficiency, higher precision and more diversity.

[0003] During the operation of the CNC machining center, tool collision accidents may occur due to program errors, material deformation, tool edge wear and other reasons. In order to prevent tool collision, the current CNC machining center will change the connection structure between the tool and the spindle to a soft connection. Although this method can control the spindle to stop rotating when the tool is about to collide, it will lead to a decrease in the processing effect of the tool. Simply stopping the tool rotation may cause the tool to be embedded in the workpiece and difficult to separate. If the tool movement cannot be stopped in time, the milling cutter and the workpiece will be damaged, and even objects will fly out and cause injuries to workers. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a high-precision layered cutting processing device and method for a CNC machining center.

[0005] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod.

[0006] As a preferred technical solution of the present invention, the horizontal detection mechanism also includes a slotted ring, which is fixedly installed on the mounting plate, a second sliding ring is slidably installed in the slotted ring, and the clamping seat is fixedly installed on the top of the second sliding ring.

[0007] As a preferred technical scheme of the present application, the evading mechanism comprises a positioning frame rotatably installed on the top of the mounting plate, the positioning frame is provided with a sliding groove for limiting the sliding of the vertical shaft, a limiting pin is slidably installed in the positioning frame in the up-down direction, and the top of the mounting plate is provided with a circle of pin holes matched with the limiting pin.

[0008] As a preferred technical scheme of the present application, the evading mechanism further comprises a lifting rod slidably installed in the positioning frame, the bottom of the first sliding ring is provided with an annular groove matched with the lifting rod, the bottom end of the lifting rod is fixedly installed with a first magnetic block slidably connected with the positioning frame, the top of the limiting pin is fixedly installed with a second magnetic block slidably connected with the positioning frame, and a tension spring is arranged between the second magnetic block and the positioning frame.

[0009] As a preferred technical scheme of the present application, the evading mechanism further comprises an elastic telescopic shaft fixedly installed on the positioning frame, and the movable end of the elastic telescopic shaft is fixedly installed on the outer wall of the vertical shaft.

[0010] As a preferred technical scheme of the present application, the evading mechanism further comprises a limiting assembly, the limiting assembly comprises a movable frame slidably installed on the first sliding ring, a wedge-shaped rod is fixedly installed in the movable frame, and the movable end of the elastic telescopic shaft is provided with a wedge-shaped groove matched with the wedge-shaped rod.

[0011] As a preferred technical scheme of the present application, the evading mechanism further comprises a vertical detection mechanism, the vertical detection mechanism comprises a guide sleeve fixedly installed on the moving platform, the bottom of the mounting plate is fixedly installed with a sliding column slidably connected with the inner wall of the guide sleeve, the sliding column is provided with a recess, and a clamping block is slidably installed in the recess.

[0012] As a preferred technical scheme of the present application, the vertical detection mechanism further comprises an adjusting block slidably installed in the recess, a compression spring is arranged between the adjusting block and the clamping block, a lead screw is rotatably installed on one side of the adjusting block, and the lead screw is threadedly connected with the sliding column in a penetrating mode.

[0013] As a preferred technical scheme of the present application, the vertical detection mechanism further comprises a Y-shaped rod hingedly connected with the moving platform, the bottom of the mounting plate is rotatably installed with a pair of rollers through a pair of vertical rods, and the Y-shaped rod is matched with the pair of rollers.

[0014] As a preferred technical scheme of the present application, a method for high-precision layered cutting processing of a numerical control machining center comprises the following steps:

[0015] S1: when the feeding amount of the milling cutter is slightly over-standard, the workpiece is stressed to drive the second sliding ring to slide in the slotted ring through the clamping seat, and the first sliding ring is pulled by a pair of elastic universal telescopic rods, so that the first sliding ring is in contact with the contact switch.

[0016] S2: When the clamping seat moves, the vertical axis moves, so that the length direction of the positioning frame is consistent with the feed direction of the milling cutter, and the positioning frame is limited by the limiting pin being clamped into the pin hole of the mounting plate;

[0017] S3: The first sliding ring is lifted, thereby causing the wedge rod to disengage from the wedge groove of the elastic telescopic shaft, and the movable end of the elastic telescopic shaft contracts to move the workpiece away from the milling cutter.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention can detect the horizontal feed amount of the milling cutter of the CNC machining center through the design of the horizontal detection mechanism. When the horizontal feed amount of the milling cutter exceeds the standard, the first sliding ring is pulled into contact with the contact switch by the elastic universal telescopic rod, which can enable the equipment body to control the milling cutter to stop moving, so as to prevent the feed amount of the milling cutter from continuing to exceed the standard and causing a tool collision accident. Through the design of the avoidance mechanism, the workpiece can be quickly moved away from the milling cutter, further preventing the occurrence of a tool collision accident.

[0020] 2. Through the design of the positioning frame of the present invention, when the clamping seat drives the vertical shaft to move, the vertical shaft can squeeze the inner wall of the slide groove of the positioning frame to make the length direction of the positioning frame consistent with the movement direction of the vertical shaft. By making the limit pin fit into the pin hole of the mounting plate, the positioning frame can be limited to ensure that when the movable end of the elastic telescopic shaft contracts, the workpiece can be effectively away from the milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0022] Figure 2 This is a schematic diagram of the installation of the mounting plate of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the level detection mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the installation of the elastic limit block of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation of the second sliding ring of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the avoidance mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation of the first magnetic block of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the vertical detection mechanism of the present invention;

[0029] Figure 9 This is a schematic diagram of the installation of the card block of the present invention.

[0030] Among them: 1-equipment body, 101-moving platform, 102-clamping seat, 201-mounting plate, 202-pillar, 203-first sliding ring, 204-elastic limit block, 205-elastic universal telescopic rod, 206-vertical axis, 207-contact switch, 301-slotted ring, 302-second sliding ring, 401-positioning frame, 402-limiting pin, 501-lifting rod, 502-first magnetic block, 503-second magnetic block, 601-elastic telescopic shaft, 701-movable frame, 702-wedge rod, 801-guide sleeve, 802-sliding column, 803-block, 901-adjusting block, 902-screw, 1001-Y-shaped rod, 1002-roller. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention.

[0032] Example 1

[0033] A high-precision layered cutting processing device for a CNC machining center, such as Figures 1-4 As shown, the device includes a main body 1, a mobile platform 101 is provided in the main body 1, and a clamping seat 102 is provided on the upper side of the mobile platform 101, and a horizontal detection mechanism is also included. The horizontal detection mechanism includes a mounting plate 201 arranged between the mobile platform 101 and the clamping seat 102, a pair of pillars 202 are fixedly installed on the top of the mounting plate 201, and a first sliding ring 203 that slides in the up and down directions is provided on the pair of pillars 202. A 匚-shaped rod is fixedly installed on the bottom of the first sliding ring 203, and the pair of pillars 202 are away from each other. There is a guide groove on the upper part of one side, and an elastic limit block 204 cooperating with the first sliding ring 203 is installed in the guide groove for sliding along the left and right directions. A pair of elastic universal telescopic rods 205 are hinged between the top of the first sliding ring 203 and the bottom of the clamping seat 102. A vertical shaft 206 passing through the first sliding ring 203 is rotatably installed on the clamping seat 102. A contact switch 207 is installed on the outer wall of the vertical shaft 206 through a support plate. The contact switch 207 is used to control the device body 1. A dodging mechanism for controlling the movement of the clamping seat 102 is provided on the mounting plate 201.

[0034] like Figure 5 As shown, the horizontal detection mechanism also includes a slotted ring 301. The slotted ring 301 is fixedly installed on the top of the mounting plate 201 through four support rods. A second sliding ring 302 is slidably installed in the slotted ring 301. The second sliding ring 302 can slide in any horizontal direction in the slotted ring 301, and the clamping seat 102 is fixedly installed on the top of the second sliding ring 302.

[0035] Initially, the two elastic limit blocks 204 are in a released state, the two elastic universal telescopic rods 205 are in a vertical state and in an extended state, and the top end of the first sliding ring 203 is only slightly lower than the corners of the two elastic limit blocks 204. When the numerical control machining center performs lateral milling on the workpiece, the feed amount of the milling cutter does not exceed the standard, the force exerted on the workpiece by the milling cutter is less than the elastic force of the two elastic limit blocks 204, and the two elastic universal telescopic rods 205 always remain in a vertical state. When the feed amount of the milling cutter slightly exceeds the standard, a tool collision accident does not immediately occur. At this time, the force exerted on the workpiece by the milling cutter is greater than the elastic force of the two elastic limit blocks 204, and the workpiece is driven to slightly move the clamping seat 102 along the feed direction of the milling cutter. The clamping seat 102 drives the second sliding ring 302 to slide horizontally in the slotted ring 301. The two elastic universal telescopic rods 205 slightly rotate and pull the first sliding ring 203 to slide upward along the pair of struts 202. The first sliding ring 203 extrudes the two elastic limit blocks 204, and the two elastic limit blocks 204 contract and slide after being stressed. Since the top end of the first sliding ring 203 is only slightly lower than the corners of the two elastic limit blocks 204, after the elastic limit blocks 204 contract and slide, the first sliding ring 203 immediately escapes from the limitation of the two elastic limit blocks 204. The active end of the two elastic universal telescopic rods 205 rapidly contracts and drives the first sliding ring 203 to rapidly slide upward. The first sliding ring 203 instantaneously extrudes and contacts the switch 207, so that the device main body 1 controls the milling cutter to stop moving, to prevent a tool collision accident from occurring due to the continuous over-standard feed amount of the milling cutter.

[0036] In order to further prevent a tool collision accident, as shown in Figures 5-7 The avoidance mechanism includes a positioning frame 401 rotatably installed on the top of the mounting plate 201. The positioning frame 401 has a sliding groove on the top for sliding and limiting the vertical shaft 206. When the vertical shaft 206 moves relative to the positioning frame 401, the positioning frame 401 can be rotated by extruding the inner wall of the sliding groove. The positioning frame 401 has a limiting pin 402 slidingly installed in the positioning frame 401 in the up-down direction. The top of the mounting plate 201 has a circle of pin holes matched with the limiting pin 402.

[0037] As shown in Figure 6 and Figure 7 The avoidance mechanism further includes a lifting rod 501 slidingly installed in the positioning frame 401. The bottom of the first sliding ring 203 has an annular groove matched with the lifting rod 501. The bottom end of the lifting rod 501 is fixedly installed with a first magnetic block 502 sliding along the inner wall of the positioning frame 401. The top of the limiting pin 402 is fixedly installed with a second magnetic block 503 sliding along the inner wall of the positioning frame 401. The first magnetic block 502 is attracted to the second magnetic block 503. A tension spring is arranged between the second magnetic block 503 and the inner wall of the positioning frame 401.

[0038] As shown in Figure 6 andFigure 7 As shown, the avoidance mechanism also includes an elastic telescopic shaft 601 fixedly mounted on the top of the positioning frame 401, and the movable end of the elastic telescopic shaft 601 is fixedly mounted on the outer wall of the vertical shaft 206. The elastic telescopic shaft 601 can move the workpiece along the feed direction of the milling cutter.

[0039] like Figure 7 As shown, it also includes a limiting component for limiting the elastic telescopic shaft 601, and the limiting component includes a movable frame 701 slidably mounted on the first sliding ring 203, and a wedge rod 702 is fixedly installed in the movable frame 701. The top of the outer wall of the movable end of the elastic telescopic shaft 601 has a wedge groove that matches the wedge rod 702. The wedge rod 702 can limit the movable end of the elastic telescopic shaft 601 by being stuck in the wedge groove.

[0040] Initially, the bottom end of the vertical shaft 206 coincides with the center of the first sliding ring 203, the first magnetic block 502 attracts the second magnetic block 503, and the tension spring is in an ultimate tensile state. When the clamping seat 102 drives the second sliding ring 302 to slide horizontally in the slotted ring 301, the clamping seat 102 drives the vertical shaft 206 to move, and the vertical shaft 206 squeezes the inner wall of the sliding groove of the positioning frame 401, causing the positioning frame 401 to rotate, and the positioning frame 401 drives the lifting rod 501 to slide along the annular groove of the first sliding ring 203, and the positioning frame 401 After the rotation, its length direction is consistent with the movement direction of the vertical shaft 206 and the feed direction of the milling cutter. At the same time, the positioning frame 401 drives the movable frame 701 to slide along the first sliding ring 203 through the elastic telescopic shaft 601, and drives the vertical shaft 206 to rotate. When the vertical shaft 206 moves, the movable end of the elastic telescopic shaft 601 is contracted, and the wedge groove of the elastic telescopic shaft 601 squeezes the wedge rod 702. The wedge rod 702 is forced to lift the first sliding ring 203 upward through the movable frame 701, and the first sliding ring 203 is lifted upward. The lifting rod 501 drives the first magnetic block 502 to lift upward. Since the tension spring is in the ultimate stretching state, the second magnetic block 503 can no longer slide upward. After the first magnetic block 502 is lifted upward, a gap is generated between it and the second magnetic block 503. The suction force between the first magnetic block 502 and the second magnetic block 503 is reduced. The tension spring contracts and drives the limiting pin 402 to insert into the corresponding pin hole on the mounting plate 201 through the second magnetic block 503, thereby limiting the positioning frame 401 so that the positioning frame 401 no longer rotates. At the same time, the first sliding ring Under the action of the two elastic universal telescopic rods 205, 203 drives the wedge rod 702 to rise rapidly through the movable frame 701. After the wedge rod 702 is lifted, it disengages from the wedge groove of the movable end of the elastic telescopic shaft 601. The movable end of the elastic telescopic shaft 601 shrinks rapidly after being freed from the restriction, and drives the vertical shaft 206 to slide along the slide groove of the positioning frame 401. The vertical shaft 206 drives the workpiece to move away from the milling cutter in the feed direction of the milling cutter through the clamping seat 102, thereby achieving the effect of the workpiece avoiding the milling cutter, further preventing the occurrence of tool collision accidents.

[0041] After the avoidance is completed, the staff presses down the U-shaped rod at the bottom of the first sliding ring 203, the U-shaped rod drives the first sliding ring 203 to slide downward, the first sliding ring 203 drives the two elastic universal telescopic rods 205 to extend and move away from the contact switch 207, and drives the lifting rod 501 and the movable frame 701 to land, the movable frame 701 drives the wedge-shaped rod 702 to extrude the wedge groove of the elastic telescopic shaft 601, the movable end of the elastic telescopic shaft 601 slides to reset, and the workpiece is moved to reset through the vertical shaft 206 and the clamping seat 102, the clamping seat 102 drives the second sliding ring 302 to slide to reset, the two elastic universal telescopic rods 205 rotate to reset, and at the same time, the first sliding ring 203 slides to the initial height, the two elastic limit blocks 204 release the sliding reset, the lifting rod 501 drives the first magnetic block 502 to land and reset, the second magnetic block 503 is attracted by the first magnetic block 502 to drive the limit pin 402 to disengage from the pin hole of the mounting plate 201, and the reset of the horizontal detection mechanism, the avoidance mechanism and the limiting assembly is completed.

[0042] As shown in Figure 8 and Figure 9 also includes a vertical detection mechanism, the vertical detection mechanism includes a guide sleeve 801 fixedly installed on the moving platform 101, the bottom of the mounting plate 201 is fixedly installed with a slide column 802 sliding with the inner wall of the guide sleeve 801, the slide column 802 slides up and down along the inner wall of the guide sleeve 801, the outer wall of the slide column 802 has a recess on the back side, a clamping block 803 is slidingly installed in the recess in the front and rear directions, and the clamping block 803 can limit the slide column 802 by contacting the guide sleeve 801.

[0043] As shown in Figure 9 , the vertical detection mechanism further includes an adjusting block 901 slidingly installed in the recess in the front and rear directions, a compression spring is arranged between the adjusting block 901 and the clamping block 803, the higher the compression degree of the compression spring, the greater the elastic force, and the front side of the adjusting block 901 is rotatably installed with a lead screw 902 threadedly connected with the slide column 802.

[0044] At the beginning, the compression spring is in the compressed state, the corner of the clamping block 803 is slightly higher than the top end of the guide sleeve 801, when the top of the workpiece is processed, the milling cutter will exert downward pressure on the workpiece, when the feed amount of the milling cutter does not exceed the standard, the force exerted by the milling cutter on the workpiece is less than the elastic force of the compression spring, the slide column 802 remains stable relative to the guide sleeve 801, when the feed amount of the milling cutter slightly exceeds the standard, the tool collision accident will not occur immediately, at this time, the force exerted by the milling cutter on the workpiece is greater than the elastic force of the compression spring, the workpiece is pressed by the clamping seat 102 and the second sliding ring 302 to extrude the slotted ring 301, the slotted ring 301 drives the slide column 802 to slide downward through the mounting plate 201, the slide column 802 drives the clamping block 803 to fall, the clamping block 803 is pressed by the outer wall of the guide sleeve 801 to slide to the side close to the adjusting block 901, the compression spring is contracted under stress, since the corner of the clamping block 803 is slightly higher than the top end of the guide sleeve 801, after the clamping block 803 slides, the clamping block 803 immediately escapes from the restriction of the guide sleeve 801, the slide column 802 falls under the influence of the weight of the clamping seat 102 and the workpiece, and the workpiece falls away from the milling cutter, thereby preventing the tool collision accident in the vertical direction.

[0045] When the workpiece is heavy, the adjusting block 901 is slid to the side close to the clamping block 803 by rotating the lead screw 902, the compression spring is contracted under stress, and the elastic force exerted on the clamping block 803 is increased, when the workpiece is light, the adjusting block 901 is slid to the side away from the clamping block 803 by rotating the lead screw 902, the compression spring is slightly released, and the elastic force exerted on the clamping block 803 is reduced, thereby adjusting the elastic force of the compression spring according to the weight of the workpiece, and improving the detection accuracy of the vertical detection mechanism.

[0046] As shown in Figure 8 The Y-shaped rod 1001 is elastically connected to the moving platform 101, the bottom of the mounting plate 201 is rotatably connected to a pair of vertical rods through a pair of rollers 1002, the Y-shaped rod 1001 cooperates with the pair of rollers 1002, and the mounting plate 201 can be lifted upward by rotating the Y-shaped rod 1001.

[0047] When the mounting plate 201 falls, the mounting plate 201 drives the pair of rollers 1002 to fall through the pair of vertical rods, the pair of rollers 1002 press the top of the Y-shaped rod 1001, the Y-shaped rod 1001 is elastically contracted and rotated under stress, after the workpiece avoids the milling cutter, a worker rotates the Y-shaped rod 1001, the Y-shaped rod 1001 drives the mounting plate 201 to be lifted upward and reset through the pair of rollers 1002 and the pair of vertical rods, the mounting plate 201 drives the slide column 802 to be lifted upward and reset, the slide column 802 drives the clamping block 803 to be lifted, and the corner of the clamping block 803 moves to the initial height, and then the compression spring drives the clamping block 803 to move and reset.

[0048] A method for high-precision layered cutting of a numerical control machining center, comprising the following steps:

[0049] S1: When the feed amount of the milling cutter is slightly over the standard, the workpiece is forced to slide the second sliding ring 302 in the slotted ring 301 through the clamping seat 102, and pull the first sliding ring 203 through a pair of elastic universal telescopic rods 205, so that the first sliding ring 203 contacts the contact switch 207;

[0050] S2: The movement of the clamping seat 102 drives the vertical shaft 206 to move, so that the length direction of the positioning frame 401 is consistent with the feed direction of the milling cutter, and the positioning frame 401 is limited by clamping the limiting pin 402 into the pin hole of the mounting plate 201.

[0051] S3: The first sliding ring 203 is lifted, and then the wedge-shaped rod 702 is separated from the wedge groove of the elastic telescopic shaft 601, and the movable end of the elastic telescopic shaft 601 is retracted to make the workpiece away from the milling cutter.

[0052] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A high-precision layered cutting processing device for a CNC machining center, comprising a device body (1), a movable platform (101) provided in the device body (1), and a clamping seat (102) located on the upper side of the movable platform (101), characterized in that: It further includes a horizontal detection mechanism. The horizontal detection mechanism includes a mounting plate (201) disposed between the moving platform (101) and the clamping seat (102). A pair of struts (202) are fixedly mounted on the mounting plate (201). A first sliding ring (203) that slides in the up and down direction is commonly sleeved on the pair of struts (202). A U-shaped rod is fixedly mounted at the bottom of the first sliding ring (203). Guide grooves are provided on the outer walls of the pair of struts (202), and elastic limit blocks (204) that cooperate with the first sliding ring (203) are slidably mounted in the guide grooves. A pair of elastic universal telescopic rods (205) are commonly hinged between the first sliding ring (203) and the clamping seat (102). A vertical shaft (206) that passes through the first sliding ring (203) is rotatably mounted on the clamping seat (102). A contact switch (207) is mounted on the outer wall of the vertical shaft (206) through a support plate. A dodging mechanism for controlling the movement of the clamping seat (102) is provided on the mounting plate (201); The horizontal detection mechanism further includes a slotted ring (301). The slotted ring (301) is fixedly mounted on the mounting plate (201). A second sliding ring (302) is slidably mounted in the slotted ring (301). The clamping seat (102) is fixedly mounted on the top of the second sliding ring (302); The dodging mechanism includes a positioning frame (401) rotatably mounted on the top of the mounting plate (201). The positioning frame (401) has a chute for sliding and limiting the vertical shaft (206). A limit pin (402) is slidably mounted in the positioning frame (401) in the up and down direction. A circle of pin holes that cooperate with the limit pin (402) are provided on the top of the mounting plate (201); The dodging mechanism further includes an elastic telescopic shaft (601) fixedly mounted on the positioning frame (401). The movable end of the elastic telescopic shaft (601) is fixedly mounted on the outer wall of the vertical shaft (206); It further includes a vertical detection mechanism. The vertical detection mechanism includes a guide sleeve (801) fixedly mounted on the moving platform (101). A sliding column (802) that slides with the inner wall of the guide sleeve (801) is fixedly mounted at the bottom of the mounting plate (201). A groove is provided on the sliding column (802), and a clamping block (803) is slidably mounted in the groove.

2. The high-precision layered cutting processing device for a CNC machining center according to claim 1, characterized in that: The dodging mechanism further includes a lifting rod (501) slidably mounted in the positioning frame (401). An annular groove that matches the lifting rod (501) is provided at the bottom of the first sliding ring (203). A first magnetic block (502) that slides with the positioning frame (401) is fixedly mounted at the bottom end of the lifting rod (501). A second magnetic block (503) that slides with the positioning frame (401) is fixedly mounted at the top of the limit pin (402). A tension spring is provided between the second magnetic block (503) and the positioning frame (401).

3. The high-precision layered cutting processing device for a CNC machining center according to claim 2, characterized in that: The invention also includes a limiting assembly, which includes a movable frame (701) slidably mounted on the first sliding ring (203), a wedge rod (702) fixedly mounted in the movable frame (701), and an outer wall of the movable end of the elastic telescopic shaft (601) has a wedge groove matching the wedge rod (702).

4. The high-precision layered cutting processing device for a CNC machining center according to claim 3, characterized in that: The vertical detection mechanism also includes an adjustment block (901) slidably installed in the groove, a compression spring is provided between the adjustment block (901) and the clamping block (803), a lead screw (902) is rotatably installed on one side of the adjustment block (901), and the lead screw (902) is threadedly connected to the sliding column (802) in a penetrating manner.

5. The high-precision layered cutting processing device for a CNC machining center according to claim 4, characterized in that: It also includes a Y-shaped rod (1001) hinged on the mobile platform (101), and a pair of rollers (1002) are rotatably mounted on the bottom of the mounting plate (201) via a pair of vertical rods, and the Y-shaped rod (1001) cooperates with the pair of rollers (1002).

6. The method of a high-precision layered cutting processing device for a CNC machining center according to claim 5, characterized in that: The following steps are involved: S1: When the feed rate of the milling cutter slightly exceeds the standard, the workpiece is subjected to force through the clamping seat (102) to drive the second sliding ring (302) to slide in the slotted ring (301), and the first sliding ring (203) is pulled through a pair of elastic universal telescopic rods (205), so that the first sliding ring (203) contacts the contact switch (207); S2: When the clamping seat (102) moves, it drives the vertical shaft (206) to move, so that the length direction of the positioning frame (401) is consistent with the feed direction of the milling cutter, and the positioning frame (401) is limited by the limiting pin (402) being inserted into the pin hole of the mounting plate (201); S3: The first sliding ring (203) is lifted, thereby causing the wedge rod (702) to disengage from the wedge groove of the elastic telescopic shaft (601), and the movable end of the elastic telescopic shaft (601) contracts to move the workpiece away from the milling cutter.

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