A multi-surface milling device adaptive to workpiece size

Abstract

The application relates to the technical field of milling devices, and particularly discloses a multi-surface milling device capable of self-adapting to the size of a workpiece, which comprises a mounting table, a workbench arranged from the outside to the inside of the mounting table, a side surface assembly and an outside assembly arranged on the upper front end surface of the workbench; a movable table in the side surface assembly can slide along the workbench, a first sliding table can be flexibly adjusted in position on the upper end surface of the movable table, and the first sliding table can realize accurate movement of a milling structure in multiple directions in cooperation with an extension cylinder and a motor on a fixed plate; a driving gear and a moving assembly in an annular array are arranged on the inner side of a ring of the outside assembly, the driving gear and the moving assembly can self-adaptively adjust the clamping and milling positions according to the size of a sapphire workpiece, and a special clamp or a complete set of equipment need not be replaced. The structural design not only shortens the equipment debugging time, but also avoids positioning errors caused by clamp replacement, effectively reduces the edge collapse risk in the sapphire workpiece milling process, and improves the size adaptation flexibility and processing safety.

Description

Technical Field

[0001] This invention relates to the field of milling apparatus technology, and in particular to a multi-face milling apparatus that adapts to workpiece size. Background Technology

[0002] In the field of milling technology, especially in multi-face milling of high-hardness, brittle materials like sapphire, the requirements for equipment adaptability, machining accuracy, and stability are even more stringent. Sapphire, due to its high hardness, excellent optical properties, and mechanical stability, is widely used in high-precision fields such as optical windows and semiconductor substrates. However, it is prone to defects such as chipping and cracking during machining, and the significant dimensional variations of sapphire workpieces in different applications further increase the difficulty of milling.

[0003] Current mainstream multi-face milling devices generally suffer from the following problems: First, poor size adaptability. The relative position adjustment between the device's worktable and milling components is limited. For sapphire workpieces of different sizes, it is necessary to replace special fixtures or adjust the parameters of the entire set of equipment. This not only prolongs the equipment debugging time but also easily leads to positioning errors due to fixture replacement, exacerbating the risk of chipping on the sapphire workpiece. Second, low multi-face processing efficiency. The milling components of existing devices are mostly fixed in a single direction. When performing multi-face milling on sapphire workpieces, it is necessary to manually disassemble, flip, and recalibrate the positioning multiple times. This not only increases the cost of manual intervention but also affects the flatness and parallelism of the sapphire workpiece due to repeated positioning errors, failing to meet the requirements of high-precision applications. Third, insufficient stability. Some devices with multi-face processing capabilities have unreasonable designs of their external support and drive structures. When milling high-hardness sapphire, the device is prone to vibration, causing unstable contact between the milling tool and the workpiece, further amplifying processing errors, and even causing the sapphire workpiece to be scrapped. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-face milling device that adapts to the workpiece size, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-face milling device for adaptive workpiece size, comprising a mounting table, a worktable being provided from the outer side to the inner side of the mounting table, and a side component and an outer component being provided on the upper front surface of the worktable;

[0006] The side assembly includes a movable stage, which is slidably disposed on the upper surface of the worktable. A first slide is slidably disposed on the upper surface of the movable stage. A fixed plate is disposed on the upper surface of the first slide. A telescopic cylinder and a milling motor are disposed on the upper surface of the fixed plate.

[0007] The outer component includes a ring located on the upper outer side of the worktable. A drive gear is rotatably mounted on the inner side of the ring, and moving components are evenly arranged in a ring array on the inner circumferential surface of the drive gear.

[0008] Preferably, the upper end face of the mounting platform is recessed to the inside, and a symmetrical sliding platform is fixedly installed on the inner front face of the mounting platform. A sliding plate is fixedly installed inside the mounting platform and below the left and right sliding platforms. A discharge port is opened on the right side face of the mounting platform to the inside, and the discharge port and the right side of the sliding plate are aligned.

[0009] Preferably, shock-absorbing mounting plates are provided on the upper left and right sides of the mounting platform, and the upper end face of the shock-absorbing mounting plate is fixedly connected to the lower end face of the middle left and right sides of the workbench.

[0010] Preferably, the upper part of the mounting platform is fixedly installed with symmetrical first limiting slide rods, and baffles are fixedly installed at both ends of the front and rear first limiting slide rods. A rocker arm is rotatably provided on the outer middle of the baffles, and a first threaded rod is fixedly installed at the center of the adjacent end face of the left and right rockers. The adjacent ends of the left and right first threaded rods are in a close state.

[0011] Preferably, the side component includes a movable platform, and the lower end face of the movable platform has symmetrical limiting slide groove holes from the left side to the right side. The limiting slide groove holes are slidably installed on the outer side of the first limiting slide rod, and the rear end face of the movable platform is fixedly installed with a first motor.

[0012] Preferably, a second threaded rod is fixedly installed on the output shaft of the first motor, and a first slide is rotatably installed on the circumferential surface of the second threaded rod. A second limiting slide is slidably arranged from the lower rear end face to the front end face of the first slide, and the lower end face of the second limiting slide is fixedly installed on the upper end face of the moving platform.

[0013] Preferably, a second motor is fixedly installed inside the moving platform, the output shaft of the second motor extends to the outside of the moving platform, and a rotating plate is fixedly installed on the outer side of the output shaft. The upper end surface of the rotating plate is evenly provided with convex mounting grooves in a circular array inside, the outer side of the mounting groove is open, and a second slide is slidably installed inside the mounting groove.

[0014] Preferably, the upper end of the second slide extends to the outside of the mounting groove and is fixedly connected to the lower end face of the fixing plate. The upper end face of the fixing plate is fixedly mounted with a telescopic cylinder and a milling motor, and a milling shaft is provided on the output shaft of the milling motor.

[0015] Preferably, a U-shaped frame from the outer component is fixedly installed on the upper part of the rear end face of the workbench. A telescopic pump is slidably installed in the middle of the U-shaped frame and at the front of the workbench. The telescopic rods of the telescopic pumps are fixedly connected to the outer circumferential surface of the ring. A symmetrical servo motor is fixedly installed on the outer circumferential surface of the ring. A drive gear is fixedly installed on the output shaft of the servo motor. The drive gear extends to the inner side of the ring. The drive gear and the outer circumference of the gear ring are in a meshing state.

[0016] Preferably, a symmetrical array of first adjusting rods is evenly and rotatably mounted on the inner circumferential surface of the ring. A double-headed grooved rod is rotatably mounted on one end of each of the first adjusting rods, and a second adjusting rod is rotatably mounted on the other end of each of the double-headed grooved rods. An arc-shaped plate and a side file are rotatably mounted on the other end of each of the second adjusting rods. A material is placed inside the arc-shaped plate and the side file. A stepper motor is fixedly mounted on the outer side of one of the two adjacent double-headed grooved rods. A third threaded rod is fixedly mounted on the output shaft of the stepper motor, and the third threaded rod is threadedly rotatably connected to the adjacent double-headed grooved rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention, through the coordinated design of the mounting platform, worktable, side components, and outer components, effectively solves the problem of poor adaptability of traditional devices to sapphire workpieces of different sizes. The movable stage in the side component can slide along the worktable, and the first slide can flexibly adjust its position on the upper surface of the movable stage. Combined with the telescopic cylinder and milling motor on the fixed plate, it enables precise movement of the milling structure in multiple directions. The inner side of the outer component is equipped with drive gears and a ring array of movable components, which can adaptively adjust the clamping and milling positions according to the size of the sapphire workpiece, eliminating the need to replace special fixtures or the entire equipment. This structural design not only shortens equipment debugging time but also avoids positioning errors caused by fixture replacement, effectively reducing the risk of edge chipping during sapphire workpiece milling and improving size adaptability flexibility and processing safety.

[0019] 2. This invention addresses the problems of low processing efficiency and poor precision caused by the need for manual flipping of sapphire workpieces in traditional devices. This device achieves automated multi-faceted processing through the linkage of the side and outer components. The moving stage in the side component drives the milling motor and milling axis to adjust the processing orientation, while the drive gear in the outer component drives the gear ring. Combined with the stable clamping of the sapphire workpiece by the moving component, multi-faceted milling of the workpiece can be completed without manual disassembly, flipping, or repositioning. This design not only reduces manual intervention costs but also avoids the impact of repeated positioning errors on the flatness and parallelism of the sapphire workpiece, significantly improving processing accuracy and efficiency, and meeting the high-precision application requirements in the optical and semiconductor fields.

[0020] 3. This invention addresses the problem of traditional milling devices, which, due to their unreasonable support and drive structures, are prone to vibration during the milling of high-hardness sapphire, leading to machining errors or workpiece scrap. This device solves this problem through a multi-stabilization structure design. A symmetrical first limiting slide bar on the upper part of the mounting platform provides stable guidance for the moving table, preventing lateral deviation during milling. The outer components are fixed to the telescopic pump ring via a U-shaped frame, and symmetrically mounted servo motors ensure balanced operation of the drive gears. The rotating connection structure of the first adjusting rod, the double-headed grooved rod, and the second adjusting rod in the moving component maintains stability when adjusting the clamping position of the sapphire workpiece. This multi-stabilization design effectively reduces vibration during milling, ensures stable contact between the milling tool and the high-hardness sapphire workpiece, avoids defects such as cracks and chipping, and guarantees machining quality. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the main body of the present invention;

[0023] Figure 2 This is a schematic diagram of the mounting platform and workbench of the present invention;

[0024] Figure 3 This is a structural diagram of the mounting platform of the present invention;

[0025] Figure 4 This is a schematic diagram of the upper structure of the worktable of the present invention;

[0026] Figure 5 This is a schematic diagram of the side component of the present invention;

[0027] Figure 6 This is a schematic diagram of the side component of the present invention;

[0028] Figure 7 This is a schematic diagram of the side component of the present invention;

[0029] Figure 8 This is a structural diagram of the outer component of the present invention;

[0030] Figure 9 This is a structural diagram of the outer component of the present invention;

[0031] Figure 10 This is a structural diagram of the mobile component of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Mounting platform; 101. Material sliding platform; 102. Slide plate; 103. Discharge port; 104. Vibration damping mounting plate;

[0034] 2. Workbench; 201. First limit slide bar; 202. Baffle; 203. Rocker arm; 204. First threaded rod;

[0035] 3. Side assembly; 301. Moving stage; 302. Limiting slide groove hole; 303. First motor; 304. Second threaded rod; 305. Second limiting slide rod; 306. First slide table; 307. Second motor; 308. Rotating plate; 309. Mounting slot; 310. Second slide table; 311. Fixing plate; 312. Telescopic cylinder; 313. Milling motor; 314. Milling shaft;

[0036] 4. External components; 401. U-shaped frame; 402. Telescopic pump; 403. Ring; 404. Servo motor; 405. Drive gear; 406. Gear ring;

[0037] 5. Moving component; 501. First adjusting rod; 502. Double-headed grooved rod; 503. Stepper motor; 504. Third threaded rod; 505. Second adjusting rod; 506. Arc plate; 507. Side file; 6. Material component. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1 to 10 The present invention provides a technical solution:

[0040] A multi-face milling device for adaptive workpiece size includes a mounting table 1. The upper surface of the mounting table 1 is recessed to the interior. Symmetrical slides 101 are fixedly mounted in the middle of the front end face of the mounting table 1. Inclined slides 102 are fixedly mounted in the lower end of the mounting table 1, below the left and right slides 101. A discharge port 103 is provided on the outer right front end of the mounting table 1, extending to the interior. The discharge port 103 and the slide 102 are aligned. Figure 3 As shown.

[0041] Therefore, according to the above structure, during use, the waste generated during the milling process will fall into the interior of the mounting table 1 through the slide table 101, and then fall onto the upper surface of the slide plate 102. It will then pass through the discharge port 103 through the slide plate 102. A collection box is placed on the outside of the discharge port 103 and on the right side of the mounting table 1 to collect the waste after milling.

[0042] Secondly, shock-absorbing mounting plates 104 are fixedly installed on the upper left and right sides of the mounting platform 1. The interior of the shock-absorbing mounting plates 104 is made of high-strength elastic material, which can effectively reduce the vibration generated during milling, thereby improving the stability of the device.

[0043] A workbench 2 is fixedly installed on the upper surface of the two shock-absorbing mounting plates 104 on the left and right sides. The lower end of the workbench 2 extends to the inner bottom surface of the mounting platform 1 and is connected to the inner bottom surface of the mounting platform 1 by a shock-absorbing device, so as to further ensure that the workbench 2 will not vibrate.

[0044] Then, first limiting slide rods 201 are fixedly installed at the front and rear edges of the upper inclined front of the workbench 2. Baffles 202 are fixedly installed at both ends of the two first limiting slide rods 201. A rocker arm 203 is rotatably installed on the outer center of the baffle 202. First threaded rods 204 are fixedly installed on the center of the adjacent end face of the rocker arm 203. The adjacent ends of the two first threaded rods 204 are close together but not in contact to avoid friction during rotation. Figure 4 and Figure 5 As shown.

[0045] A side assembly 3 is provided on the upper surface of the workbench 2. The side assembly 3 includes a movable stage 301. Symmetrical limiting slide grooves 302 are formed on the lower left and right sides of the movable stage 301. The limiting slide grooves 302 and the first limiting slide rod 201 are in a sliding connection. It should be noted that the upper two sides of the first limiting slide rod 201 have an arc-shaped structure, and the structure of the limiting slide grooves 302 matches it. Figure 6 As shown.

[0046] Furthermore, the movable stage 301 and the adjacent first threaded rod 204 are in a threaded rotational connection state. During use, the rocker arm 203 can rotate the first threaded rod 204, allowing the movable stage 301 to move linearly left and right. The first limiting slide rod 201 restricts this linear movement, preventing the movable stage 301 from shifting or vibrating during movement. This allows the two movable stages 301 to move closer or further apart. Figure 1 As shown.

[0047] A first motor 303 is fixedly installed at the upper rear end of the moving platform 301. A second threaded rod 304 is fixedly installed on the output shaft of the first motor 303. Then, a second limiting slide rod 305 is fixedly installed on both the left and right sides of the upper part of the moving platform 301. Then, a first slide table 306 is slidably installed on the outer surface of the two second limiting slide rods 305. The first slide table 306 and the second threaded rod 304 are in a threaded rotational connection state.

[0048] Therefore, during use, the first motor 303 is started, causing its output shaft to drive the second threaded rod 304 to rotate. Since the first slide 306 and the second threaded rod 304 are connected by a threaded joint, when the second threaded rod 304 rotates, the first slide 306 will move linearly back and forth along the guide direction of the second limiting slide rod 305. The presence of the second limiting slide rod 305 not only limits the movement path of the first slide 306 but also effectively prevents the first slide 306 from deviating or wobbling during movement, thus ensuring its stability and accuracy.

[0049] A second motor 307 is fixedly installed inside the first slide 306. The output shaft of the second motor 307 extends to the outside of the first slide 306. A rotating plate 308 is fixedly installed on the output shaft of the first slide 306. Four mounting slots 309 are evenly arranged in a ring on the upper surface of the rotating plate 308. The mounting slots 309 have a convex structure, such as... Figure 7 As shown.

[0050] The second slide 310 is slidably installed inside the mounting slot 309. It should be noted that after the second slide 310 is slidably installed inside the mounting slot 309, it will not slide out automatically, ensuring its subsequent delivery to the machine is stable.

[0051] Then, the upper end of the second slide 310 extends to the outside of the mounting groove 309, and a rectangular fixing plate 311 is fixedly installed on the upper surface of the outer side of the second slide 310. The fixing plate 311 and the second slide 310 are fixedly connected by screws. Then, a telescopic cylinder 312 is fixedly installed on the upper surface of one of the second slides 310, and different types of milling motors 313 are fixedly installed on the upper surface of the remaining three second slides 310. Milling shafts 314 are slidably installed on the output shaft of the milling motors 313. Therefore, during use, different types of milling shafts 314 can be replaced to perform milling operations on sapphire.

[0052] With the above structure, during use, the rotation of the second motor 307 can be controlled to drive the rotating plate 308 to rotate, thereby realizing the switching of different milling motors 313 and telescopic cylinders 312 positions.

[0053] Then, during use, the material part 6 can be fixed by the cooperation of the two telescopic cylinders 312 on the left and right sides, so that the subsequent moving component 5 can perform milling operations on the outer circumferential surface of the material part 6, ensuring that the material part 6 will not shake. Then, after the side milling operation is completed, the material part 6 can be fixed by the cooperation of the subsequent moving component 5 and the outer component 4. Then, through the working effect of the above structure, by changing different models of milling motors 313, milling operations can be performed on the left and right sides of the material part 6, thus realizing the completion of all-round milling operations without manual adjustment of the material part 6, saving time.

[0054] A U-shaped frame 401 from the outer component 4 is fixedly installed on the upper rear end of the worktable 2. A telescopic pump 402 is slidably installed on the upper middle round rod of the U-shaped frame 401 and the front round rod of the worktable 2. A circular ring 403 is fixedly installed on the telescopic rods of the two telescopic pumps 402. The inner circumferential surface of the circular ring 403 is recessed. Servo motors 404 are fixedly installed on the left and right sides of the outer circumferential surface of the circular ring 403. A drive gear 405 is fixedly installed on the output shaft of the two servo motors 404. A gear ring 406 is rotatably installed inside the circular ring 403. The gear ring 406 and the drive gear 405 mesh with each other.

[0055] Therefore, during use, by controlling the operation of the servo motor 404, the drive gear 405 drives the gear ring 406 to rotate, thereby enabling the ring 403 to achieve precise angle adjustment. This design ensures that the ring 403 can rotate flexibly as needed during operation to adapt to different angle processing requirements. Simultaneously, the recessed structure inside the ring 403 can tightly fit against the outer circumferential surface of the material part 6, further enhancing the fixing effect and preventing loosening or displacement during processing. Furthermore, the telescopic pump 402 allows the ring 403 to be adjusted vertically, enabling it to work in conjunction with the milling motor 313 and milling shaft 314 to perform milling operations on both sides of the material part 6, achieving full milling of both sides of the material part 6.

[0056] A moving assembly 5 is arranged in a ring array on the inner circumferential surface of the gear ring 406. The moving assembly 5 includes a first adjusting rod 501, wherein two adjacent first adjusting rods 501 are symmetrically arranged. A double-headed grooved rod 502 is rotatably mounted on the other end of each first adjusting rod 501, and a second adjusting rod 505 is rotatably mounted on the other end of each double-headed grooved rod 502. An arc-shaped plate 506 and a side file 507 are rotatably mounted on the other end of each second adjusting rod 505. Figure 9 and Figure 10 As shown.

[0057] A stepper motor 503 is fixedly installed on the outer side of one of the two adjacent double-headed grooved rods 502. A third threaded rod 504 is fixedly installed on the output shaft of the stepper motor 503. The third threaded rod 504 is threadedly rotatably connected to the other adjacent double-headed grooved rod 502.

[0058] Therefore, during use, the position of the side file 507 can be adjusted by rotating the ring 403. At this time, the third threaded rod 504 can be rotated by starting the corresponding stepper motor 503. During the rotation, the two adjacent double-headed grooved rods 502 can be moved closer or further away, thereby adjusting the tilt state of the first adjusting rod 501 and the second adjusting rod 505. This allows the side file 507 to move closer or further away from the material part 6, thus enabling milling operations on the outer surface of the material part 6.

[0059] After the side work is completed, the side file 507 is moved away, and the arc plate 506 is used to fix the material part 6 to form a crocodile. Then, the milling motor 313 and the milling shaft 314 mentioned above can be used to work on the left and right sides of the material part 6. It should be noted that during use, the position of the telescopic pump 402 can be adjusted by the cooperation of the two telescopic cylinders 312 on the left and right.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-face milling device that adapts to workpiece dimensions, characterized in that: It includes a mounting platform (1), and a workbench (2) is provided on the outer side to the inner side of the mounting platform (1). A side component (3) and an outer component (4) are provided on the upper front surface of the workbench (2). The side assembly (3) includes a movable stage (301), which is slidably disposed on the upper surface of the worktable (2). A first slide (306) is slidably disposed on the upper surface of the movable stage (301). A fixed plate (311) is disposed on the upper surface of the first slide (306). A telescopic cylinder (312) and a milling motor (313) are disposed on the upper surface of the fixed plate (311). The outer component (4) includes a ring (403), which is located on the upper outer side of the workbench (2). A drive gear (405) is rotatably mounted on the inner side of the ring (403), and moving components (5) are evenly arranged in a ring array on the inner circumferential surface of the drive gear (405). The second motor (307) is fixedly installed inside the moving stage (301). The output shaft of the second motor (307) extends to the outside of the moving stage (301), and a rotating plate (308) is fixedly installed on the outer side of the output shaft. The upper end face of the rotating plate (308) is evenly provided with convex mounting grooves (309) in a circular array inside. The outer side of the mounting groove (309) is in a through state. A second slide (310) is slidably installed inside the mounting groove (309). The upper end of the second slide (310) extends to the outside of the mounting groove (309) and is fixedly connected to the lower end face of the fixing plate (311). The upper end face of the fixing plate (311) is fixedly mounted with a telescopic cylinder (312) and a milling motor (313). A milling shaft (314) is provided on the output shaft of the milling motor (313). The inner circumferential surface of the ring (403) is uniformly and rotatably equipped with a symmetrical first adjusting rod (501). One end of the inner side of each first adjusting rod (501) is rotatably equipped with a double-headed grooved rod (502). The other end of each double-headed grooved rod (502) is rotatably equipped with a second adjusting rod (505). The other end of each second adjusting rod (505) is rotatably equipped with an arc plate (506) and a side file (507). Material parts (6) are placed inside the arc plate (506) and the side file (507). A stepper motor (503) is fixedly installed on the outer side of one of the two adjacent double-headed grooved rods (502). A third threaded rod (504) is fixedly installed on the output shaft of the stepper motor (503). The third threaded rod (504) and the adjacent double-headed grooved rod (502) are rotatably connected by threads.

2. The multi-face milling device for adaptive workpiece size according to claim 1, characterized in that: The upper end face of the mounting platform (1) is recessed. A symmetrical sliding platform (101) is fixedly installed on the front end face of the mounting platform (1). A sliding plate (102) is fixedly installed inside the mounting platform (1) and at the lower part of the left and right sliding platforms (101). A discharge port (103) is opened on the right side face of the mounting platform (1) and the right side of the discharge port (103) and the sliding plate (102) are aligned.

3. The multi-face milling device for adaptive workpiece size according to claim 2, characterized in that: The upper left and right sides of the mounting platform (1) are provided with shock-absorbing mounting plates (104), and the upper end face of the shock-absorbing mounting plate (104) is fixedly connected to the lower end face of the middle left and right sides of the workbench (2).

4. The multi-face milling device for adaptive workpiece size according to claim 1, characterized in that: The upper part of the mounting platform (1) is fixedly installed with symmetrical first limiting slide rods (201). Both ends of the front and rear first limiting slide rods (201) are fixedly installed with baffles (202). The outer middle of the baffles (202) is rotatably provided with rockers (203). The center of the adjacent end face of the two rockers (203) is fixedly installed with first threaded rods (204). The adjacent ends of the two first threaded rods (204) are close to each other.

5. The multi-face milling device for adaptive workpiece size according to claim 1, characterized in that: The side component (3) includes a moving platform (301). The lower end face of the moving platform (301) has a symmetrical limiting slide hole (302) from the left side to the right side. The limiting slide hole (302) is slidably installed on the outer side of the first limiting slide rod (201). The rear end face of the moving platform (301) is fixedly installed with a first motor (303).

6. The multi-face milling device for adaptive workpiece size according to claim 5, characterized in that: A second threaded rod (304) is fixedly installed on the output shaft of the first motor (303). A first slide (306) is rotatably installed on the circumferential surface of the second threaded rod (304). A second limiting slide (305) is slidably provided from the lower rear end face to the front end face of the first slide (306). The lower end face of the second limiting slide (305) is fixedly installed on the upper end face of the moving platform (301).

7. The multi-face milling device for adaptive workpiece size according to claim 1, characterized in that: The upper part of the rear end face of the workbench (2) is fixedly installed with a U-shaped frame (401) in the outer component (4). The middle part of the U-shaped frame (401) and the front part of the workbench (2) are both slidably equipped with telescopic pumps (402). The telescopic rods of the telescopic pumps (402) are fixedly connected to the outer circumferential surface of the ring (403). The outer circumferential surface of the ring (403) is fixedly installed with symmetrical servo motors (404). The output shaft of the servo motors (404) is fixedly installed with drive gears (405). The drive gears (405) extend to the inner side of the ring (403). The outer circumference of the drive gears (405) and the gear ring (406) are in a state of mutual meshing.

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