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

Abstract

The invention relates to the technical field of numerical control machining centers, in particular to a high-precision layered cutting machining device and method for a numerical control machining center. Comprising an equipment body, a moving platform is arranged in the equipment body, a clamping base located on the upper side of the moving platform is arranged, the horizontal detection mechanism is further included, and the horizontal detection mechanism comprises a mounting plate arranged between the moving platform and the clamping base. Through the design of the horizontal detection mechanism, the feeding amount of the milling cutter in the horizontal direction of the numerical control machining center can be detected, when the feeding amount of the milling cutter in the horizontal direction exceeds the standard, a first sliding ring is pulled to make contact with a contact switch through an elastic universal telescopic rod, and the equipment body can control the milling cutter to stop moving; and through the design of the avoiding mechanism, the workpiece can be rapidly away from the milling cutter, and the 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, the slotted ring 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 solution of the present invention, the avoidance mechanism includes a positioning frame rotatably installed on the top of the mounting plate, the positioning frame has a sliding groove for the vertical axis to slide and limit, the positioning frame has a limit pin slidingly installed in the up and down directions, and the top of the mounting plate has a circle of pin holes that cooperate with the limit pins.

[0008] As a preferred technical solution of the present invention, the avoidance mechanism also includes a lifting rod slidably installed in the positioning frame, the bottom of the first sliding ring has an annular groove matching the lifting rod, the bottom end of the lifting rod is fixedly installed with a first magnetic block that slides with the positioning frame, the top of the limit pin is fixedly installed with a second magnetic block that slides with the positioning frame, and a tension spring is arranged between the second magnetic block and the positioning frame.

[0009] As a preferred technical solution of the present invention, the avoidance mechanism further includes an elastic telescopic shaft fixedly mounted on the positioning frame, and a movable end of the elastic telescopic shaft is fixedly mounted on the outer wall of the vertical shaft.

[0010] As a preferred technical solution of the present invention, it also includes a limiting component, which includes a movable frame slidably installed on the first sliding ring, a wedge rod fixedly installed in the movable frame, and the outer wall of the movable end of the elastic telescopic shaft has a wedge groove matching the wedge rod.

[0011] As a preferred technical solution of the present invention, it also includes a vertical detection mechanism, which includes a guide sleeve fixedly installed on the mobile platform, a sliding column fixedly installed on the bottom of the mounting plate, which slides with the inner wall of the guide sleeve, and a groove is provided on the sliding column, and a block is slidably installed in the groove.

[0012] As a preferred technical solution of the present invention, the vertical detection mechanism also includes an adjustment block slidably installed in the groove, a compression spring is arranged between the adjustment block and the clamping block, a screw is rotatably installed on one side of the adjustment block, and the screw is threadedly connected to the sliding column.

[0013] As a preferred technical solution of the present invention, it also includes a Y-shaped rod hinged on the mobile platform, and a pair of rollers are rotatably installed on the bottom of the mounting plate through a pair of vertical rods, and the Y-shaped rod cooperates with the pair of rollers.

[0014] As a preferred technical solution of the present invention, a method for a high-precision layered cutting processing device for a CNC machining center comprises the following steps:

[0015] S1: When the feed rate of the milling cutter slightly exceeds the standard, the workpiece is subjected to force through the clamping seat to drive the second sliding ring to slide in the slotted ring, and the first sliding ring is pulled by the pair of elastic universal telescopic rods to make the first sliding ring 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 the installation schematic diagram of the clamping block of the present invention.

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

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

[0032] Embodiment 1

[0033] A high-precision layer-by-layer cutting processing device for a numerical control machining center, as Figure 1-Figure 4 shown, includes an equipment main body 1. A moving platform 101 is arranged inside the equipment main body 1, and a clamping seat 102 is arranged above the moving platform 101. It also includes a horizontal detection mechanism. The horizontal detection mechanism includes a mounting plate 201 arranged between the moving platform 101 and the clamping seat 102. A pair of support pillars 202 are fixedly installed at the top of the mounting plate 201. A first sliding ring 203 that slides in the up and down direction is jointly sleeved on the pair of support pillars 202. A U-shaped rod is fixedly installed at the bottom of the first sliding ring 203. Guide grooves are provided on the upper parts of the mutually remote sides of the pair of support pillars 202. Elastic limit blocks 204 that are slidably installed in the left and right directions in the guide grooves and are matched with the first sliding ring 203 are provided. A pair of elastic universal telescopic rods 205 are jointly hinged between the top end of the first sliding ring 203 and the bottom of the clamping seat 102. A vertical shaft 206 that passes 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 equipment main body 1. A dodging mechanism for controlling the movement of the clamping seat 102 is arranged on the mounting plate 201.

[0034] As Figure 5 shown, the horizontal detection mechanism further includes a slotted ring 301. The slotted ring 301 is fixedly installed at 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. 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 of the first sliding ring 203 is only slightly lower than the corner of the two elastic limit blocks 204. When the CNC machining center performs side milling on the workpiece, when the feed rate of the milling cutter does not exceed the standard, the force applied by the milling cutter to the workpiece is less than the elastic force of the two elastic limit blocks 204. The two elastic universal telescopic rods 205 always remain in a vertical state. When the feed rate of the milling cutter slightly exceeds the standard, a tool collision accident will not occur immediately. At this time, the force applied by the milling cutter to the workpiece is greater than the elastic force of the two elastic limit blocks 204. The workpiece is driven by the force to drive the clamping seat 102 to move slightly along the feed direction of the milling cutter, and the clamping seat 102 drives the second sliding ring 302 to move between the slotted ring 3 01 slides horizontally, the two elastic universal telescopic rods 205 rotate slightly, and pull the first sliding ring 203 to slide upward along a pair of pillars 202, and the first sliding ring 203 squeezes the two elastic limit blocks 204. After the two elastic limit blocks 204 are subjected to force, they shrink and slide. Since the top of the first sliding ring 203 is only slightly lower than the corner of the two elastic limit blocks 204, after the elastic limit blocks 204 shrink and slide, the first sliding ring 203 immediately breaks away from the restriction of the two elastic limit blocks 204, and the movable ends of the two elastic universal telescopic rods 205 shrink rapidly and drive the first sliding ring 203 to slide rapidly upward. The first sliding ring 203 instantly squeezes the contact switch 207, causing the equipment body 1 to control the milling cutter to stop moving to prevent the milling cutter feed rate from continuously exceeding the standard and causing a tool collision accident.

[0036] In order to further prevent knife collision accidents, Figure 5-Figure 7 As shown, the avoidance mechanism includes a positioning frame 401 rotatably installed on the top of the mounting plate 201, and the top of the positioning frame 401 has a slide groove for the vertical shaft 206 to slide and limit. When the vertical shaft 206 moves relative to the positioning frame 401, the positioning frame 401 can be rotated by squeezing the inner wall of the slide groove. A limit pin 402 is installed in the positioning frame 401 in an up and down direction. The top of the mounting plate 201 has a circle of pin holes that match the limit pin 402.

[0037] like Figure 6 and Figure 7 As shown, the avoidance mechanism also includes a lifting rod 501 slidably installed in the positioning frame 401, the bottom of the first sliding ring 203 has an annular groove matching the lifting rod 501, the bottom end of the lifting rod 501 is fixedly installed with a first magnetic block 502 that slides along the inner wall of the positioning frame 401, and the top of the limit pin 402 is fixedly installed with a second magnetic block 503 that slides along the inner wall of the positioning frame 401. The first magnetic block 502 and the second magnetic block 503 attract each other, and a tension spring is arranged between the second magnetic block 503 and the inner wall of the positioning frame 401.

[0038] like Figure 6 and Figure 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 evasion is completed, the staff presses the U-shaped rod at the bottom of the first sliding ring 203 downward. 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 also drives the lifting rod 501 and the movable frame 701 to descend. The movable frame 701 drives the wedge-shaped rod 702 to squeeze the wedge groove of the elastic telescopic shaft 601. The movable end of the elastic telescopic shaft 601 slides back to its original position, and through the vertical shaft 206 and the clamping seat 102, the workpiece is driven to move back to its original position. The clamping seat 102 drives the second sliding ring 302 to slide back to its original position, and the two elastic universal telescopic rods 205 rotate back to their original positions. At the same time, the first sliding ring 203 slides to the initial height, and the two elastic limit blocks 204 are released and slide back to their original positions. The lifting rod 501 drives the first magnet 502 to descend and return to its original position. The second magnet 503 is adsorbed by the first magnet 502, causing the limit pin 402 to disengage from the pin hole of the mounting plate 201, completing the reset of the horizontal detection mechanism, the evasion mechanism, and the limit component.

[0042] As Figure 8 shown, it further includes a vertical detection mechanism. The vertical detection mechanism includes a guide sleeve 801 fixedly installed on the moving platform 101. A sliding column 802 that slides along the inner wall of the guide sleeve 801 is fixedly installed at the bottom of the mounting plate 201. The sliding column 802 slides up and down along the inner wall of the guide sleeve 801. There is a groove on the rear side of the outer wall of the sliding column 802. A clamping block 803 is slidably installed in the groove along the front-rear direction. The clamping block 803 can limit the sliding column 802 by contacting the guide sleeve 801.

[0043] As Figure 9 shown, the vertical detection mechanism further includes an adjustment block 901 slidably installed in the groove along the front-rear direction. A compression spring is provided between the adjustment block 901 and the clamping block 803. The higher the degree of compression of the compression spring, the greater the elastic force. A lead screw 902 that is threadedly connected to the sliding column 802 is rotatably installed on the front side of the adjustment block 901.

[0044] ​​Initially, the compression spring is in a compressed state, and the corner of the clamping block 803 is only slightly higher than the top 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 rate 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 rate of the milling cutter slightly exceeds the standard, a 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 forced to squeeze the slotted ring 301 through the clamping seat 102 and the second sliding ring 302. The slotted ring 301 drives the slide post 802 to slide downward through the mounting plate 201, and the slide post 802 drives the block 803 to descend. The block 803 is squeezed by the outer wall of the guide sleeve 801 and slides toward the side close to the adjustment block 901. The compression spring is forced to shrink. Since the corner of the block 803 is only slightly higher than the top of the guide sleeve 801, after the block 803 slides, the block 803 immediately breaks away from the restriction of the guide sleeve 801, and the slide post 802 falls under the influence of the weight of the clamping seat 102 and the workpiece. After the workpiece falls, it stays away from the milling cutter, thereby preventing vertical tool collision accidents.

[0045] When the workpiece is heavier, the adjusting block 901 is slid toward the side close to the block 803 by rotating the lead screw 902, the compression spring is contracted under the force, and the elastic force applied to the block 803 is increased. When the workpiece is lighter, the adjusting block 901 is slid toward the side away from the block 803 by rotating the lead screw 902, the compression spring is slightly released, and the elastic force applied to the block 803 is reduced, thereby realizing the adjustment of the elastic force of the compression spring according to the weight of the workpiece, thereby improving the detection accuracy of the vertical detection mechanism.

[0046] like Figure 8 As shown, it also includes a Y-shaped rod 1001 elastically hinged on the mobile platform 101, and a pair of rollers 1002 are rotatably installed on the bottom of the mounting plate 201 through a pair of vertical rods. 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 descends, the mounting plate 201 drives the pair of rollers 1002 to descend through a pair of vertical rods. The pair of rollers 1002 squeeze the top of the Y-shaped rod 1001, and the Y-shaped rod 1001 elastically contracts and rotates under the force. After the workpiece avoids the milling cutter, the staff rotates the Y-shaped rod 1001, and the Y-shaped rod 1001 drives the mounting plate 201 to lift up and reset through a pair of rollers 1002 and a pair of vertical rods. The mounting plate 201 drives the sliding column 802 to lift up and reset. The sliding column 802 drives the block 803 to lift. After the corner of the block 803 moves to the initial height, the compression spring is released to drive the block 803 to move and reset.

[0048] A method for high-precision layered cutting processing device of a CNC machining center comprises the following steps:

[0049] S1: When the feed rate of the milling cutter slightly exceeds the standard, the workpiece is subjected to force through the clamping seat 102, driving the second sliding ring 302 to slide in the slotted ring 301, and pulling 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: When the clamping seat 102 moves, the vertical shaft 206 moves, so that the length direction of the positioning frame 401 is consistent with the feed direction of the milling cutter. The limiting pin 402 is clamped into the pin hole of the mounting plate 201 to limit the positioning frame 401;

[0051] 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.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection 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 support columns (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 support columns (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 support columns (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).

2. The high-precision layered cutting processing device for a CNC machining center according to claim 1, characterized in that: 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).

3. The high-precision layered cutting processing device for a CNC machining center according to claim 2, characterized in that: 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).

4. The high-precision layered cutting processing device for a CNC machining center according to claim 3, 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).

5. The high-precision layered cutting processing device for a CNC machining center according to claim 4, characterized in that: 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).

6. The high-precision layered cutting processing device for a CNC machining center according to claim 5, characterized in that: It further includes a limiting component. The limiting component includes a movable frame (701) slidably mounted on the first sliding ring (203). A wedge-shaped rod (702) is fixedly mounted in the movable frame (701). A wedge groove that matches the wedge-shaped rod (702) is provided on the outer wall of the movable end of the elastic telescopic shaft (601).

7. The high-precision layered cutting processing device for a CNC machining center according to claim 6, characterized in that: The invention also includes a vertical detection mechanism, which includes a guide sleeve (801) fixedly mounted on the mobile platform (101), a sliding column (802) fixedly mounted on the bottom of the mounting plate (201) and sliding with the inner wall of the guide sleeve (801), and a groove is provided on the sliding column (802), and a block (803) is slidably mounted in the groove.

8. The high-precision layered cutting processing device for a CNC machining center according to claim 7, 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.

9. The high-precision layered cutting processing device for a CNC machining center according to claim 8, 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) through a pair of vertical rods, and the Y-shaped rod (1001) cooperates with the pair of rollers (1002).

10. The method of high-precision layered cutting processing device for a CNC machining center according to claim 9, 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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