A CNC machine tool that can open and close from multiple sides

Abstract

This invention belongs to the field of CNC lathes and proposes a multi-sided opening and closing CNC machine tool, including a lathe body. The lathe body is equipped with a headstock, a protective cover, and a sliding door. The protective cover includes a top plate connected to the headstock and an integral front panel. The protective cover also includes an upper back plate and a lower back plate opposite to the front panel and joined vertically to form a back plate. The upper back plate is hinged to the top plate. An end panel opposite to the headstock is provided between the back plate and the front panel. Both the end panel and the lower back plate have flip hinges at their bottoms, and movable hinges at their bottoms. The lathe body has upper and lower slots for accommodating the end panel and lower back plate, arranged in an alternating pattern. A linkage self-locking device connecting the lower back plate and the front panel is provided on the outer side of the end panel. This invention has a reasonable design, controllable maintenance area, facilitates joint maintenance by team members, helps shorten maintenance cycles, and improves equipment production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of CNC lathes, and particularly relates to a CNC machine tool that can be opened and closed from multiple sides. Background Technology

[0002] CNC lathes are widely used automated precision equipment in modern machining, primarily used for efficient and high-precision cutting of rotating parts such as shafts and discs. During the cutting process, the spindle drives the workpiece to rotate at high speed, and the intense interaction between the tool and the workpiece generates a large amount of high-temperature chips and splashing cutting fluid. There are also safety risks such as tool breakage and workpiece detachment, which can easily cause personal injury and equipment failure. Therefore, CNC lathes are designed with protective covers around the machining area. When closed, these covers form a sealed protective space, effectively blocking splashing chips and cutting fluid, as well as accidental ejection, ensuring operational safety.

[0003] In existing technologies, the protective covers of CNC lathes mostly adopt a split sheet metal design. Mainstream models generally have a sliding protective door with a grille on the front, while the other sides, back, and top use a fixed, enclosed sheet metal structure. Typically, only a doorway is opened on the back, with an inspection cover installed for easy maintenance. However, due to the small area of ​​the inspection cover, the operating range after opening is limited, increasing the difficulty of maintenance and making it inconvenient for multiple personnel to perform maintenance simultaneously, especially in cases involving complex maintenance. This leads to longer maintenance cycles and impacts equipment production efficiency. Summary of the Invention

[0004] This invention addresses the technical problems existing in the protective covers of CNC lathes mentioned above, and proposes a CNC machine tool that can be opened and closed from multiple sides. The maintenance and operation area is controllable, which facilitates joint maintenance by team members, helps to shorten the maintenance cycle, and improves the production efficiency of the equipment.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The present invention provides a multi-sided opening and closing CNC machine tool, including a lathe body. The lathe body is provided with a spindle box, a protective cover, and a sliding door. The protective cover includes a top plate connected to the spindle box and an integral front panel. The protective cover also includes an upper back plate and a lower back plate opposite to the front panel and joined vertically to form a back plate. The upper back plate is hinged to the top plate. An end panel opposite to the spindle box is provided between the back plate and the front panel. A flip hinge is provided at the bottom of both the end panel and the lower back plate. A movable hinge is provided at the bottom of the flip hinge. The interior of the lathe body is provided with an upper slot and a lower slot for accommodating the end panel and the lower back plate, which are staggered vertically. A linkage self-locking device connected to the lower back plate and the front panel is provided on the outer side of the end panel.

[0006] Preferably, the upper back plate, lower back plate, and end plate are all groove-shaped structures with their groove surfaces facing the outside of the lathe body.

[0007] Preferably, the linkage self-locking device includes a herringbone-shaped lock box with three locking channels, two of which are inclinedly opposite to the front panel and the lower back panel, and the other lock channel corresponds to the top panel. Each locking channel has a lock cylinder that slides with it. The end of the lock cylinder has at least three locking pins that penetrate the top panel, the front panel, and the lower back panel. A linkage mechanism is provided on the side of the lock cylinder opposite to the locking pins. The lock box has a handle ring that penetrates and connects to it, and the handle ring has a fixing block that connects to the end panel.

[0008] Preferably, the linkage mechanism includes a first hook arm hinged to the lock cylinder, a second hook arm that hooks to the end of the first hook arm, a rack that is hinged to the second hook arm, a drive gear that meshes with the rack on the transmission side, a lock handle at the center of the drive gear, one end of the lock handle being located outside the lock box and having multiple indexing holes on its end face.

[0009] Preferably, a three-star wheel is provided between the drive gear and the lock track, which is coaxially connected to the drive gear. The three-star wheel has three axially staggered teeth, and each tooth is provided with an elastic pawl. The end of the elastic pawl away from the tooth is connected to the second hook arm.

[0010] Preferably, one side of the drive gear is provided with three balance gears that mesh with the three racks in a one-to-one correspondence, and the back of the rack slides in contact with the inner wall of the bifurcation end of the adjacent lock track.

[0011] Preferably, a limiting shaft is provided on one side of the first hook arm to contact and cooperate with it, the axial surface of the limiting shaft is slidably supported and cooperated with the ring wall of the handle wheel ring, and the part of the handle wheel ring located in the lock box is slidably supported and cooperated with the side of the first hook arm.

[0012] Preferably, the flip hinge includes a U-shaped flip arm with a key-shaped hole near its bottom. A positioning component is provided in the key-shaped hole. The positioning component includes two positioning arms that are hinged to each other. The end of the positioning arm is provided with a C-shaped claw hook, which engages with a positioning rod provided at the end of the movable hinge.

[0013] Preferably, both the upper and lower slots are provided with T-slots for the movable hinge to move and plate slots for the flipping arm to move, and the ends of the T-slots are provided with anti-detachment blocks.

[0014] Preferably, the mating surfaces of the upper back plate and the lower back plate are provided with snap fasteners, the end of the lower back plate is provided with a retaining shaft, and the back of the spindle box is provided with a groove plate that mates with the retaining shaft, the groove plate being vertically oriented.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: This invention provides a multi-sided opening and closing CNC machine tool. In addition to the sliding door, the end panel and back panel of the protective cover can be opened and folded into the lathe body by flipping. In particular, the mating position of the end panel and back panel has no sharp edges, and the maintenance and operation space is large after opening, which is convenient for the team members to carry out maintenance, which helps to shorten the maintenance cycle and improve the production efficiency of the equipment. By adopting a linkage self-locking device, the end panel, back panel and front panel can be linked and self-locked, which helps to improve the safety and reliability of the protective cover when the device is in the processing state. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A perspective view of a multi-faceted openable CNC machine tool provided for an embodiment; Figure 2 A perspective view of a multi-faceted CNC machine tool provided for an embodiment, viewed from another direction; Figure 3 A rear view of a multi-faceted openable CNC machine tool provided for an embodiment; Figure 4 An open state diagram of a multi-sided openable CNC machine tool provided for an embodiment; Figure 5 A perspective view of the linkage self-locking device, the flip hinge, and the moving hinge on the end panel; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 Exploded view of the linkage self-locking device, flip hinge, moving hinge and end panel; Figure 8 Side view of the linkage self-locking device, flip hinge, movable hinge and end panel; Figure 9 for Figure 8 Enlarged view of point B in the middle; Figure 10 for Figure 8 A cross-sectional view of the central linkage self-locking device, the flip hinge, the moving hinge, and the end panel in the GG direction. In the above figures: 1. Lathe body; 11. Upper slot; 12. Lower slot; 13. T-slot; 14. Plate slot; 15. Anti-detachment block; 2. Spindle box; 3. Protective cover; 31. Top plate; 32. Front panel; 33. Upper back plate; 34. Lower back plate; 35. End panel; 36. Flip hinge; 361. Flip arm; 362. Keyhole; 37. Positioning assembly; 371. Positioning arm; 372. Claw hook; 373. Positioning rod; 38. Moving hinge; 39. 1. Flip-button; 310. Locking shaft; 4. Sliding door; 5. Linkage self-locking device; 51. Lock box; 52. Lock track; 53. Lock cylinder; 54. Lock pin; 55. Linkage mechanism; 551. First hook arm; 552. Second hook arm; 553. Rack; 554. Drive gear; 555. Lock handle; 556. Indexing hole; 557. Three-star wheel; 558. Elastic pawl; 56. Handle ring; 57. Fixing block; 58. Limiting shaft; 59. Balance gear; 6. Groove plate. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Examples, such as Figures 1-10 As shown, this invention provides a multi-sided opening and closing CNC machine tool, including a lathe body 1. The lathe body 1 is equipped with a spindle box 2, a protective cover 3, and a sliding door 4. The protective cover 3 includes a top plate 31 connected to the spindle box 2 and a front panel 32 integrally formed with the top plate 31. The top plate 31 and the front panel 32 have an L-shaped top view, and the position of the L-shaped bend is a common design feature of mainstream CNC machine tool models. Slide rails for the sliding door 4 are provided at the front end of the lathe body 1 and the top of the top plate 31. The lathe body 1, the spindle box 2, and the sliding door 4 are existing mature technologies and will not be described in detail here. Based on this, to improve the safety of the protective cover 3 and its practicality during maintenance, this invention proposes beneficial designs for the back plate and end panel 35 of the protective cover 3.

[0021] Specifically, the protective cover 3 provided by the present invention includes an upper back plate 33 and a lower back plate 34 that are opposite to the front panel 32 and joined together to form a back plate. The upper back plate 33 is hinged to the top plate 31. An end panel 35 opposite to the spindle box 2 is provided between the back plate and the front panel 32. A flip hinge 36 is provided at the bottom of both the end panel 35 and the lower back plate 34. A movable hinge 38 is provided at the bottom of the flip hinge 36. The lathe body 1 has an upper slot 11 and a lower slot 12 arranged in an alternating pattern for the placement of the end panel 35 and the lower back plate 34. A linkage self-locking device 5 connected to the lower back plate 34 and the front panel 32 is provided on the outer side of the end panel 35. The width of the upper slot 11 is slightly larger than the maximum width of the end panel 35, and the length of the upper slot 11 is greater than the height of the end panel 35 but less than the length of the lower back plate 34. The length of the lower slot 12 is slightly greater than the length of the lower back plate 34, and the width of the lower slot 12 is less than the height of the entire back plate but slightly greater than the height of the lower back plate 34. The back plate in this invention is composed of two parts: an upper back plate 33 and a lower back plate 34. On the one hand, it can reduce the width of the lower back plate 34, thereby reducing the space requirement when it is folded into the lower slot 12 after being opened. On the other hand, it can reduce the necessary load on the lower back plate 34 for self-locking by the linkage self-locking device 5, reduce the torque acting on the locking pin 54, and improve the self-locking reliability and safety of the linkage self-locking device 5.

[0022] Furthermore, in addition to the sliding door 4, which can be opened and closed, the upper back panel 33 of the protective cover 3 can be flipped over to the top plate 31. The end panel 35 and the lower back panel 34 can be opened by flipping with the support of the flip hinge 36, and then folded and placed in an orderly manner inside the lathe body 1, i.e., in the upper slot 11 and the lower slot 12, with the support of the moving hinge 38. In particular, there are no vertical edges / prisms at the joint position of the end panel 35 and the back panel, which provides a large maintenance and operation space after opening, making it convenient for the crew members to carry out joint maintenance, shortening the maintenance cycle and improving the production efficiency of the equipment. On this basis, the present invention provides a linkage self-locking device 5 on the end panel 35 to achieve linkage self-locking of the end panel 35, the back panel and the front panel 32, which helps to improve the safety and reliability of the protective cover 3 when the device is in the processing state.

[0023] To improve the structural strength of the protective cover 3, the top plate 31 and the front panel 32 provided by this invention are appropriately thickened, thereby ensuring the reliability of the support for the sliding door 4, and also ensuring the overall structural stability of the top plate 31 and the front panel 32 after the end panel 35 and the back plate are fully open. Based on this, the upper back plate 33, the lower back plate 34, and the end panel 35 provided by this invention are all groove-shaped structures with their groove surfaces facing the outside of the lathe body 1. The groove-shaped structure design improves structural strength, increases the actual sealing area of ​​the mating surfaces of the end panel 35 and the front panel 32, and the end panel 35 and the back plate, and provides an effective assembly base for the linkage self-locking device 5, improving the space utilization of the end panel 35 and the linkage self-locking device 5.

[0024] To improve the linkage self-locking performance and reliability of the linkage self-locking device 5, the linkage self-locking device 5 provided by the present invention includes a herringbone-shaped lock box 51 and three locking channels 52. Two of the locking channels 52 are inclinedly opposite to the front panel 32 and the lower back panel 34, and the other locking channel 52 is vertically opposite to the top panel 31. A lock cylinder 53 is provided in the locking channel 52 and slides therewith. At least three locking pins 54 are provided at the end of the lock cylinder 53. The locking pins 54 penetrate the top panel 31, the front panel 32 and the lower back panel 34. A linkage mechanism 55 is provided on the side of the lock cylinder 53 opposite to the locking pins 54. A handle ring 56 is provided on the lock box 51 and is connected through it. A fixing block 57 connected to the end panel 35 is provided on the handle ring 56. Specifically, the lock box 51 includes a box body and a box cover that matches its shape. The box cover can be fixed to the box body with screws and provide sealing protection for the mechanical structure inside the lock channel 52. On this basis, the inner wall of the lock channel 52 provides a guide for the lock cylinders 53 on its branches. By operating the linkage mechanism 55, a pulling force can be applied to the three lock cylinders 53 at the same time. The lock cylinders 53 move along the guide path of the lock channel 52 until the lock pins 54 leave the lock holes on the top plate 31, the front panel 32 and the lower back plate 34. This can simultaneously release the interlocking mechanism between the end panel 35 and the front panel 32, the top plate 31 and the lower back plate 34.

[0025] The wheel ring 56 is installed on the end of the protective cover 3, i.e. the end panel 35, under the connection of the fixing block 57 and the screw. The wheel ring 56 is used as a hand-held node. By flipping, the end panel 35 can be flipped, thereby achieving the purpose of flattening the end panel 35. Pushing the end panel 35 into the upper slot 11 can effectively hide the end panel 35 in the upper slot 11.

[0026] To improve the linkage performance of the linkage mechanism 55, the linkage mechanism 55 provided by the present invention includes a first hook arm 551 hinged to the lock cylinder 53, and a second hook arm 552 hooked to the end of the first hook arm 551. The hook end of the first hook arm 551 is provided with a hook tooth, and the hook end of the second hook arm 552 is provided with two hook teeth. The two hook teeth of the second hook arm 552 simultaneously hook the hook tooth of the first hook arm 551. A rack 553 hinged to the second hook arm 552 is provided, and a drive gear 554 meshing with the rack 553 is provided on the transmission side of the rack 553. A lock handle 555 is provided at the center of the drive gear 554. One end of the lock handle 555 is located outside the lock box 51 and its end face is provided with multiple indexing holes 556. The lock handle 555 and the indexing hole 556 correspond to a dedicated unlocking device. The unlocking device includes an L-shaped lock bar. The short end of the lock bar is provided with an unlocking plate that can be connected to the lock handle 555. The unlocking plate is provided with at least two pins that correspond to the indexing holes 556 at different positions. By moving the unlocking device, the angle of the lock handle 555 can be adjusted, thereby achieving the purpose of unlocking the linkage self-locking device 5. Specifically, the lock handle 555 and the drive gear 554 can be connected by a key or directly fitted and fixed together, and can rotate synchronously. The drive gear 554 is driven by the rotation of the lock handle 555 to move the rack 553. The racks 553 of different linkage mechanisms 55 mesh with one drive gear 554 at the same time, thereby driving all linkage mechanisms 55 to move together. For example, the rack 553 drives the second hook arm 552 to move in a plane. The second hook arm 552 hooks the first hook arm 551 to move in a plane. The plane movement of the first hook arm 551 drives the lock cylinder 53 to move along the lock track 52 until the lock pin 54 leaves the lock hole on the front panel 32, the end panel 35 and the top plate 31. Since the lock pin 54, which cooperates with the lower back plate 34, is tilted downward, part of the gravity of the lower back plate 34 in the interlocked state can act on the lock pin 54. Even if there is a tendency to flip, the protective cover 3 will not disintegrate unless all three linkage mechanisms 55 of the linkage self-locking device 5 are unlocked.

[0027] Furthermore, the present invention provides a three-star wheel 557 coaxially connected to the drive gear 554 and the locking track 52. The three-star wheel 557 has three axially staggered teeth, and each tooth has an elastic pawl 558. The end of the elastic pawl 558 away from the teeth is connected to the second hook arm 552. The elastic pawl 558 is made of spring steel and is capable of deformation and automatic reset. The pawl end of the elastic pawl 558 can be connected to the teeth of the three-star wheel 557 via screws / pins or direct welding. The axially staggered design of the elastic pawls 558 in the three linkage mechanisms 55 ensures that the elastic deformation range of different elastic pawls 558 does not interfere with adjacent elastic pawls 558, thereby guaranteeing the tensioning and reset performance of different linkage mechanisms 55. The elastic pawl 558 can provide tension to the second hook arm 552. While the second hook arm 552 is generating planar motion, the elastic potential energy of the elastic pawl 558 changes and stores potential for reset. The elastic pawl 558 is configured in an L-shaped structure and its back side near the pawl end can contact the inner wall of the lock channel 52 where the adjacent linkage mechanism 55 is located. At its maximum deformation position, it can play a limiting role. At the same time, the hooking ends of the first hook arm 551 and the second hook arm 552 also abut against the inner wall of the lock channel 52 where they are located, thereby reaching the unlocking extreme point, which is beneficial to improving the reliability of the linkage self-locking device 5.

[0028] To improve the balance performance of the linkage mechanism 55, the drive gear 554 provided in this invention has three balancing gears 59 on one side, which mesh one-to-one with the three racks 553. The back of the racks 553 slides in contact with the inner wall of the bifurcation end / inflection point of the adjacent locking track 52. In this way, the drive gear 554, the balancing gears 59, and the inner wall of the inflection point of the locking track 52 can simultaneously provide clamping for the translation of the racks 553. In addition, the elastic support of the elastic pawl 558 can improve the balance and reliability of the linkage mechanism 55.

[0029] Furthermore, the first hook arm 551 provided by the present invention has a limiting shaft 58 on one side that contacts and engages with it, and the axial surface of the limiting shaft 58 slides and supports the ring wall of the handle ring 56. The characteristic that the handle ring 56 is set through the lock box 51 ensures that the entire structure of the handle ring 56 does not protrude from the groove of the end panel 35; at the same time, the part of the handle ring 56 located in the lock box 51 slides and supports the side of the first hook arm 551, improving the movement quality of the first hook arm 551 within a predetermined plane range; the back of the first hook arm 551 is restricted from free planar movement by the limiting shaft 58, and the straight path formed by the center point of the limiting shaft 58 connecting the hinge center of the first hook arm 551 and the lock cylinder 53 is as parallel as possible to the center of the lock channel 52, thereby allowing the planar movement of the first hook arm 551 to be converted into the translational movement of the lock cylinder 53, which is beneficial to improving the efficiency of the linkage self-locking device 5 in completing self-locking and unlocking.

[0030] To improve the safety and reliability of the end panel 35 and the lower back panel 34 behind the component protective cover 3, the flip hinge 36 provided by the present invention includes a U-shaped flip arm 361. The flip arm 361 has a key-shaped hole 362 near its bottom. A positioning component 37 is disposed in the key-shaped hole 362. The positioning component 37 includes two mutually hinged positioning arms 371. A C-shaped claw hook 372 is provided at the end of each positioning arm 371. The claw hook 372 engages with a positioning rod 373 disposed at the end of the movable hinge 38. The positioning component 37 can be retracted and hidden in the key-shaped hole 362, while the two positioning arms 371 opening in opposite directions allow the claw hook 372 to engage with an annular groove on the positioning rod 373. Since the positioning rod 373 is fixed to the movable hinge 38, the positioning rod 373 can be used as an extension of the movable hinge 38. In space, the engagement center of the claw hook 372 and the positioning rod 373, the hinge center of the flipping arm 361 and the movable hinge 38, and the support center of the movable hinge 38 and its groove surface can form a triangular system. Even if the flipping hinge 36 / flipping arm 361 has a flipping tendency, the triangular system can restrain this flipping tendency, thereby ensuring the safety and reliability of the protective cover 3 in the combined state.

[0031] like Figures 2-4 As shown, the upper slot 11 and lower slot 12 provided by the present invention are both provided with a T-shaped slot 13 for the translation of the movable hinge 38 and a plate slot 14 for the translation of the flipping arm 361. The end of the T-shaped slot 13 is provided with an anti-detachment block 15. The anti-detachment block 15 is provided with through holes on both sides for the positioning rod 373 to pass through. The anti-detachment block 15 can limit the outermost end of the movable hinge 38 to prevent the movable hinge 38 from detaching from its upper slot 11 and lower slot 12. The plate slot 14 can provide a reasonable constraint path for the translation of the flipping arm 361, firstly reducing the necessary diameter of the upper slot 11 and lower slot 12, secondly improving the straightness of the end panel 35 and lower back panel 34 during the folding process, avoiding large shear damage to the flipping hinge 36 and movable hinge 38, and thirdly effectively constraining the positioning component 37 to prevent the positioning component 37 from opening arbitrarily.

[0032] To improve the connection performance between the upper back plate 33 and the lower back plate 34, the mating surfaces of the upper back plate 33 and the lower back plate 34 provided by the present invention are provided with a snap fastener 39, and the end of the lower back plate 34 is provided with a retaining shaft 310. The back of the spindle box 2 is provided with a groove plate 6 that mates with the retaining shaft, and the groove plate 6 is vertically arranged. The snap fastener 39 can be fastened into the snap groove between the upper back plate 33 and the lower back plate 34 through planar movement, thereby improving the integrity of the upper back plate 33 and the lower back plate 34. The groove plate 6 serves to position and seal the end of the back plate, and also acts as the flip limit node of the retaining shaft 310, improving the reliability of the upper back plate 33 as the closed area of ​​the protective cover 3. It should be noted that the specific structure of the snap fastener 39 and the snap groove can adopt other designs in the prior art as needed, based on achieving quick locking and quick opening.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A multi-sided opening and closing CNC machine tool, comprising a lathe body, wherein a spindle box, a protective cover, and a sliding door are provided on the lathe body, and the protective cover includes a top plate connected to the spindle box and an integral front panel, characterized in that, The protective cover also includes an upper back plate and a lower back plate that are opposite to the front panel and are joined together to form a back plate. The upper back plate is hinged to the top plate. An end panel opposite to the spindle box is provided between the back plate and the front panel. A flip hinge is provided at the bottom of both the end panel and the lower back plate. A movable hinge is provided at the bottom of the flip hinge. The interior of the lathe body is provided with an upper slot and a lower slot for the end panel and the lower back plate to be placed and are staggered vertically. A linkage self-locking device connected to the lower back plate and the front panel is provided on the outside of the end panel.

2. The CNC machine tool with multi-sided opening and closing as described in claim 1, characterized in that, The upper back plate, lower back plate, and end plate are all groove-shaped structures with their groove surfaces facing the outside of the lathe body.

3. A multi-faceted openable CNC machine tool according to claim 2, characterized in that, The linkage self-locking device includes a herringbone-shaped lock box with three locking channels. Two of the locking channels are inclined and opposite to the front panel and the lower back panel, and the other locking channel corresponds to the top panel. Each locking channel has a lock cylinder that slides with it. The end of the lock cylinder has at least three locking pins that penetrate the top panel, the front panel, and the lower back panel. A linkage mechanism is provided on the side of the lock cylinder opposite to the locking pins. The lock box has a handle ring that penetrates and connects to it. The handle ring has a fixing block that connects to the end panel.

4. A multi-sided opening and closing CNC machine tool according to claim 3, characterized in that, The linkage mechanism includes a first hook arm hinged to the lock cylinder, a second hook arm that hooks to the end of the first hook arm, a rack that hinges to the second hook arm, a drive gear that meshes with the rack on the transmission side, a lock handle at the center of the drive gear, one end of the lock handle being located outside the lock box and having multiple indexing holes on its end face.

5. A multi-sided opening and closing CNC machine tool according to claim 4, characterized in that, A three-star wheel is provided between the drive gear and the lock track, and is coaxially connected to the drive gear. The three-star wheel is provided with three axially staggered teeth, and each tooth is provided with an elastic pawl. The end of the elastic pawl away from the tooth is connected to the second hook arm.

6. A multi-faceted openable CNC machine tool according to claim 5, characterized in that, Three balance gears are provided on one side of the drive gear, each meshing with one of the three racks. The back of the rack slides in contact with the inner wall of the bifurcation end of the adjacent lock track.

7. A multi-faceted openable CNC machine tool according to claim 6, characterized in that, A limiting shaft is provided on one side of the first hook arm to contact and cooperate with it. The axial surface of the limiting shaft is slidably supported and cooperated with the ring wall of the handle wheel ring. The part of the handle wheel ring located in the lock box is slidably supported and cooperated with the side of the first hook arm.

8. A multi-faceted openable CNC machine tool according to claim 1 or 7, characterized in that, The flip hinge includes a U-shaped flip arm with a key-shaped hole near its bottom. A positioning component is provided in the key-shaped hole. The positioning component includes two positioning arms that are hinged to each other. The end of the positioning arm is provided with a C-shaped claw hook, which engages with a positioning rod provided at the end of the movable hinge.

9. A multi-faceted openable CNC machine tool according to claim 8, characterized in that, The upper and lower slots are both provided with T-slots for the sliding hinge and plate slots for the sliding tilting arm. The ends of the T-slots are provided with anti-detachment blocks.

10. A multi-faceted openable CNC machine tool according to claim 1, characterized in that, The mating surfaces of the upper and lower back plates are provided with snap fasteners, the end of the lower back plate is provided with a retaining shaft, and the back of the spindle box is provided with a groove plate that mates with the retaining shaft, the groove plate being vertically oriented.

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