A gantry grinding machine moving beam lifting and leveling mechanism

Abstract

The application discloses a dynamic beam lifting and leveling mechanism of a gantry grinding machine, which comprises a gantry, a dynamic beam, a screw rod and a driving worm gear, a grinding head of the gantry grinding machine is installed on the dynamic beam, and the screw rod is vertically and rotatably connected to the left and right sides of the gantry; the lifting and leveling mechanism further comprises a power adjusting mechanism, a level installed on the dynamic beam, two rotating shafts horizontally and coaxially arranged on the upper side of the gantry, and a set of servo systems for driving the two rotating shafts to synchronously rotate through a transmission structure; a driving worm gear matched with the driving worm gear is fixedly connected to the end of the rotating shaft; the power adjusting mechanism is drivingly connected to at least one rotating shaft through a speed reducer; the power adjusting mechanism is used for driving one rotating shaft to axially move, or driving the two rotating shafts to oppositely rotate, so that the dynamic beam is horizontal. The application provides the dynamic beam lifting and leveling mechanism of the gantry grinding machine, reduces the number of servo systems, reduces the inclination degree during lifting of the dynamic beam, simultaneously sets the power adjusting mechanism, and guarantees the levelness of the dynamic beam.

Description

Technical Field

[0001] This invention relates to the field of gantry grinding machine technology, and in particular to a lifting and leveling mechanism for the moving beam of a gantry grinding machine. Background Technology

[0002] Gantry grinding machines are used to process large workpieces. As shown in patent application number CN202023301939.1, they include a gantry frame, a moving beam, a grinding head, and a lifting mechanism. The moving beam is horizontally positioned, with its two ends slidably connected to the left and right sides of the gantry frame. The height of the moving beam is adjusted by the lifting mechanism. The grinding head is mounted on the moving beam and can travel along the beam to process the workpiece. Existing lifting mechanisms include two servo systems located at the left and right ends of the upper side of the gantry frame. Each servo system is connected to a downward-extending lead screw, which is threaded to the end of the moving beam. When adjusting the height of the moving beam, the two servo systems synchronously drive the lead screw to rotate, causing both ends of the moving beam to move synchronously upward or downward to adjust the height of the moving beam.

[0003] The existing grinding machine's lifting mechanism uses two servo systems. On the one hand, this is costly. On the other hand, the two servo systems need to be highly synchronized in their movement speeds during operation so that the left and right ends of the moving beam can rise and fall synchronously. If the speed difference between the two servo systems is large, the moving beam will tilt significantly, and in severe cases, the connection between the end of the moving beam and the lead screw may be damaged. Summary of the Invention

[0004] To address the shortcomings of existing grinding machine lifting mechanisms, such as high cost and significant tilting of the moving beam during lifting, this invention proposes a moving beam lifting and leveling mechanism for gantry grinding machines. This mechanism reduces the number of servo systems and the degree of tilting during moving beam lifting, while also incorporating a power adjustment mechanism to ensure the levelness of the moving beam.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A lifting and leveling mechanism for a gantry grinding machine's moving beam includes a gantry frame, a moving beam, lead screws, and a drive worm gear. The grinding head of the gantry grinding machine is mounted on the moving beam. Lead screws are vertically rotatably connected to the left and right sides of the gantry frame. The two ends of the moving beam are threadedly connected to the corresponding lead screws and are in a horizontal state. The drive worm gear is fixedly connected to the upper end of the lead screw. The lifting and leveling mechanism also includes a power adjustment mechanism, a level ruler mounted on the moving beam, two horizontally coaxial rotating shafts set on the upper side of the gantry frame, and a servo system that drives the two rotating shafts to rotate synchronously through a transmission structure. A drive worm gear that cooperates with the drive worm gear is fixedly connected to the end of the rotating shaft. The power adjustment mechanism is transmitted to at least one rotating shaft through a reduction mechanism. The power adjustment mechanism is used to drive one of the rotating shafts to move axially, or to drive the two rotating shafts to rotate in opposite directions, so that the moving beam is horizontal.

[0006] With the above settings, firstly, a servo system synchronously drives the two rotating shafts through the transmission structure, reducing costs while ensuring that the two ends of the moving beam move up and down in a basically synchronous manner, preventing the moving beam from tilting significantly during lifting; secondly, after the servo system stops, the power adjustment mechanism can drive the rotating shafts to further level the moving beam and eliminate the height difference between the two ends of the moving beam; thirdly, the deceleration mechanism reduces the driving speed of the power adjustment mechanism, improving the adjustment accuracy of the power adjustment mechanism.

[0007] Furthermore, one of the shafts is an axially fixed drive shaft on the gantry, with a slot at the end of the drive shaft and a sliding groove parallel to the axis of the drive shaft on the side of the slot. The servo system is connected to the drive shaft via transmission. The other shaft is a driven shaft that can move axially on the gantry. The end of the driven shaft is inserted into the slot and slidably connected to the slot. The transmission structure is a fixed key fixedly connected to the end of the driven shaft, and the fixed key is slidably connected in the sliding groove. The power adjustment mechanism is connected to the driven shaft via a reduction mechanism to drive the driven shaft to move axially.

[0008] With the above settings, the drive shaft drives the driven shaft to rotate synchronously via a fixed key, while not hindering the axial movement of the driven shaft, so as to level the moving beam.

[0009] Furthermore, the servo system includes a first servo motor, a first driving pulley, a first transmission belt, and a first driven pulley. The first servo motor is fixedly connected to the gantry and connected to the first driving pulley. The first driven pulley is coaxially mounted on the driving shaft and is connected to the drive pulley via the first transmission belt.

[0010] With the above configuration, the servo system drives the drive shaft to rotate via the first servo motor, the first drive pulley, the first transmission belt, and the first driven pulley.

[0011] Furthermore, the lifting and leveling mechanism also includes a stabilizing seat fixedly connected to the upper side of the gantry, with the drive shaft passing through the stabilizing seat and rotatably connected to the stabilizing seat via bearings.

[0012] With the above settings, the stabilizer increases the rotational stability of the drive shaft, while the bearing reduces the rotational resistance of the drive shaft, further improving the rotational stability of the drive shaft.

[0013] Furthermore, the lifting and leveling mechanism also includes a support base and a sliding base. The support base is located near the driven shaft and away from the drive shaft, and is fixedly connected to the upper side of the gantry frame. A first mounting groove is provided in the support base, and the sliding base is slidably connected in the first mounting groove. A second mounting groove is provided in the sliding base, and the drive worm gear of the driven shaft is rotatably connected in the second mounting groove and axially fixed. Both the support base and the sliding base are provided with clearance openings. The drive worm gear extends through the clearance openings into the second mounting groove and cooperates with the drive worm gear. The power adjustment mechanism is connected to the sliding base through a reduction mechanism.

[0014] With the above configuration, the support seat and the sliding seat are used to support the end of the driven shaft, so that the end of the driven shaft can rotate stably. At the same time, the driven shaft is axially fixed in the sliding seat, and the power adjustment mechanism drives the driven shaft to move axially through the sliding seat.

[0015] Furthermore, the power adjustment mechanism includes a first motor fixedly connected to the outside of the support base, and the reduction mechanism includes a screw arranged parallel to or coaxial with the driven shaft. The screw is threadedly connected to the sliding seat, and the first motor can drive the screw to rotate.

[0016] With the above configuration, the power adjustment mechanism drives the driven shaft to move axially via the first motor, screw, and sliding seat.

[0017] Furthermore, the transmission structure includes a housing, a first bevel gear, a second bevel gear, and a self-locking worm gear. The housing is positioned between two rotating shafts, with the ends of the shafts extending into the housing and rotatably connected to it. The first bevel gear is fixedly connected to one end of each shaft near the housing. The second bevel gear is rotatably connected within the housing and meshes with the first bevel gear. The self-locking worm gear is fixedly connected to the second bevel gear. The servo system includes a second servo motor, a second driving pulley, a second driven pulley, and a second transmission belt. The second servo motor is fixedly connected to the gantry and to the second driving pulley. Second driven pulleys are fixedly connected to both sides of the housing, and are connected to the second driving pulley via the second transmission belt. The reduction mechanism is a rotatably connected worm gear within the housing, which engages with the self-locking worm gear. The power adjustment mechanism is a second motor fixedly mounted outside the housing, which is connected to the worm gear.

[0018] With the above settings, the lifting and leveling of the moving beam is achieved solely by rotating the shaft. The shaft does not need to move axially, reducing the degree of freedom of the shaft's movement, thereby preventing the shaft from loosening and improving the stability of the moving beam.

[0019] Furthermore, multiple second bevel gears are provided and arranged in a circular array around the axis of the first bevel gear in the housing, and a self-locking worm gear is fixedly connected to one of the second bevel gears.

[0020] The above settings reduce wear between the second bevel gear and the first bevel gear. Attached Figure Description

[0021] Figure 1 This is a partial schematic diagram of a gantry grinding machine as shown in the embodiment.

[0022] Figure 2 This is a top view of the gantry grinding machine used in an embodiment.

[0023] Figure 3 for Figure 1 AA sectional view.

[0024] Figure 4 for Figure 2 BB cross-sectional view.

[0025] Figure 5 This is a schematic diagram of another form of the gantry grinding machine used in the embodiment.

[0026] Figure 6 for Figure 5 CC section view. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0028] like Figures 1 to 6 As shown, a lifting and leveling mechanism for a gantry grinding machine includes a gantry frame 3, a moving beam 4, lead screws 5, and a drive worm gear 6. The grinding head 7 of the gantry grinding machine is mounted on the moving beam 4. Lead screws 5 are vertically rotatably connected to the left and right sides of the gantry frame 3. The two ends of the moving beam 4 are threadedly connected to the corresponding lead screws 5 and are in a horizontal state. The drive worm gear 6 is fixedly connected to the upper end of the lead screws 5. The lifting and leveling mechanism also includes a power adjustment mechanism, a level 8 mounted on the moving beam 4, two horizontally coaxial rotating shafts 9 set on the upper side of the gantry frame 3, and a servo system that drives the two rotating shafts 9 to rotate synchronously through a transmission structure. A drive worm gear 10 that cooperates with the drive worm gear 6 is fixedly connected to the end of the rotating shaft 9. The power adjustment mechanism is transmitted to at least one rotating shaft 9 through a reduction mechanism. The power adjustment mechanism is used to drive one of the rotating shafts 9 to move axially, or to drive the two rotating shafts 9 to rotate in opposite directions, so that the moving beam 4 is horizontal.

[0029] With the above settings, firstly, a servo system synchronously drives the two rotating shafts 9 to rotate through the transmission structure, reducing costs while ensuring that the two ends of the moving beam 4 move up and down in a basically synchronous manner, preventing the moving beam 4 from tilting significantly during lifting; secondly, after the servo system stops, the power adjustment mechanism can drive the rotating shafts 9 to further level the moving beam 4 and eliminate the height difference between the two ends of the moving beam 4; thirdly, the deceleration mechanism reduces the driving speed of the power adjustment mechanism, improving the adjustment accuracy of the power adjustment mechanism.

[0030] The gantry frame 3 of this application has a portal frame structure, including a horizontal crossbeam on the upper side and vertical columns fixedly connected to the left and right ends of the crossbeam. The moving beam 4 is horizontally arranged on the lower side of the crossbeam, and its two ends are slidably connected to the columns. The lead screw 5 is vertically rotatably connected to the side of the column and threadedly connected to the end of the moving beam 4. Each lead screw 5 has a drive worm gear 6 fixedly connected to its upper end on the same axis. Each drive worm gear 6 corresponds to a drive worm 10 and a rotating shaft 9. Both the lead screw 5 structure and the worm gear structure have self-locking characteristics. When the rotating shaft 9 stops, the moving beam 4 is locked, ensuring the stability of the grinding head 7 of the gantry grinder when processing the workpiece.

[0031] The gantry grinding machine of this application is used for processing large workpieces. It features a built-in grinding head 7 with high-precision lifting and lateral movement along the moving beam 4, enabling grinding of the workpiece in all directions. The lifting and leveling mechanism has both lifting and leveling functions. The lifting function raises the moving beam 4 and grinding head 7 to a height suitable for the workpiece, while the leveling function further levels the lifted moving beam 4 to increase the horizontality of the grinding head 7's lateral movement, thereby improving processing accuracy. During actual processing, the servo system synchronously drives two rotating shafts 9 to rotate via a transmission structure. The rotating shafts 9... The driving worm gear 10, worm wheel 6, and lead screw 5 drive the moving beam 4 to move upward or downward until it reaches an appropriate height. The height of the moving beam 4 can be controlled by a linear encoder. This application uses a servo system to synchronously control the rotation of the two rotating shafts 9, unlike traditional gantry grinding machines. This avoids excessive tilting of the moving beam 4 due to a large difference in speed between the left and right lead screws 5, simplifying control and reducing equipment costs. In actual machining, after the moving beam 4 stops moving, a slight height difference still exists between the left and right ends, which can still be measured by a level 8. The moving beam 4 has a very small tilt angle, which is not visible to the naked eye and will affect the machining accuracy. At this time, the power adjustment mechanism adopts two schemes to further level the moving beam 4. First, when the power adjustment mechanism drives one of the rotating shafts 9 to move axially through the reduction mechanism, for example, when the power adjustment mechanism drives the left rotating shaft 9 to move axially, the left drive worm 10 moves synchronously with the rotating shaft 9. The drive worm 10 is similar to the gear and rack principle, and drives the left lead screw 5 to rotate through the drive worm wheel 6, so that the left end of the moving beam 4 moves up or down. The levelness of the moving beam 4 is detected by the level ruler 8. After the moving beam 4 is level, the power adjustment mechanism stops moving. Second, the power adjustment mechanism drives the two rotating shafts 9 to rotate in opposite directions through the reduction mechanism. At this time, the left and right lead screws 5 rotate in opposite directions, and the left and right ends of the moving beam 4 move in opposite directions until the moving beam 4 is level. The reduction mechanism in this application reduces the driving speed of the power adjustment mechanism, so that the power adjustment mechanism levels the moving beam 4 very slowly, which plays a fine adjustment role. The levelness of the moving beam 4 is easier to control, the accuracy requirement of the power adjustment mechanism is lower, and the equipment cost is further reduced. It should be noted that the grinding head 7 of this application has a high-precision lifting function. In actual equipment, the vertical floating range of the grinding head 7 is about 200mm. The accuracy of the processing height of the grinding head 7 can be guaranteed by the lifting function of the grinding head 7 itself. The height control accuracy of the moving beam 4 itself does not need to be very high. The main focus is to ensure the levelness to guarantee the processing accuracy of the grinding head 7. The actual vertical floating range of the moving beam 4 is much larger than that of the grinding head 7. It is mainly used to roughly lift the grinding head 7 to the top of large workpieces for processing. That is, if the workpiece is tall, the height of the moving beam 4 will be increased accordingly. If the workpiece is short, the height of the moving beam 4 will be decreased accordingly.

[0032] like Figures 1 to 4As shown, in one implementation, one rotating shaft 9 is an axially fixed drive shaft on the gantry 3. The end of the drive shaft is provided with a slot 11, and the side of the slot 11 is provided with a slide groove 12 parallel to the axis of the drive shaft. The servo system is connected to the drive shaft for transmission. The other rotating shaft 9 is a driven shaft that can move axially on the gantry 3. The end of the driven shaft is inserted into the slot 11 and slidably connected to the slot 11. The transmission structure is set as a fixing key 13 fixedly connected to the end of the driven shaft, and the fixing key 13 is slidably connected in the slide groove 12. The power adjustment mechanism is connected to the driven shaft for transmission through the reduction mechanism to drive the driven shaft to move axially.

[0033] With the above settings, the drive shaft drives the driven shaft to rotate synchronously via the fixed key 13, while not hindering the axial movement of the driven shaft, so as to level the moving beam 4.

[0034] In this application, the drive shaft is axially fixed on the gantry 3, meaning that the drive shaft can only rotate around the axis and will not move axially. The driven shaft can rotate with the drive shaft under the action of the fixed key 13, and can also move axially on the gantry 3. When the driven shaft moves axially, the fixed key 13 slides in the slide groove 12. Specifically, when the servo system drives the drive shaft to rotate around the axis, the fixed key 13 drives the drive shaft and the driven shaft to rotate synchronously, ensuring that the lead screws 5 on both sides rotate at the same speed. After the servo system stops, the power adjustment mechanism drives the driven shaft to move closer to or away from the drive shaft, and drives one of the lead screws 5 to rotate through the drive worm 10 and drive worm wheel 6 to adjust the height of one end of the moving beam 4, so that the height of both ends of the moving beam 4 is uniform.

[0035] As one implementation, the servo system includes a first servo motor 14, a first drive pulley 15, a first transmission belt 16, and a first driven pulley 17. The first servo motor 14 is fixedly connected to the gantry 3 and connected to the first drive pulley 15. The first driven pulley 17 is coaxially mounted on the drive shaft and is connected to the drive pulley via the first transmission belt 16.

[0036] With the above configuration, the servo system drives the drive shaft to rotate via the first servo motor 14, the first drive pulley 15, the first transmission belt 16, and the first driven pulley 17.

[0037] This application uses a first servo motor 14, which has high motion accuracy and can make the height control accuracy of the moving beam 4 reach the millimeter level.

[0038] As one implementation method, the lifting and leveling mechanism also includes a stabilizing seat 18 fixedly connected to the upper side of the gantry 3, with the drive shaft passing through the stabilizing seat 18 and rotatably connected to the stabilizing seat 18 via a bearing 19.

[0039] With the above settings, the stabilizer 18 increases the rotational stability of the drive shaft, while the bearing can reduce the rotational resistance of the drive shaft, further improving the rotational stability of the drive shaft.

[0040] As one implementation, the lifting and leveling mechanism also includes a support base 20 and a sliding base 21. The support base 20 is located near the end of the driven shaft away from the driving shaft and is fixedly connected to the upper side of the gantry frame 3. A first mounting groove 22 is provided in the support base 20. The sliding base 21 is slidably connected in the first mounting groove 22. A second mounting groove 23 is provided in the sliding base 21. The drive worm gear 10 of the driven shaft is rotatably connected in the second mounting groove 23 and is axially fixed. Both the support base 20 and the sliding base 21 are provided with clearance openings 24. The drive worm wheel 6 extends into the second mounting groove 23 through the clearance opening 24 and cooperates with the drive worm gear 10. The power adjustment mechanism is connected to the sliding base 21 through a reduction mechanism.

[0041] With the above configuration, the support seat 20 and the sliding seat 21 are used to support the end of the driven shaft, so that the end of the driven shaft can rotate stably. At the same time, the driven shaft is axially fixed in the sliding seat 21, and the power adjustment mechanism drives the driven shaft to move axially through the sliding seat 21.

[0042] As one implementation, the power adjustment mechanism includes a first motor 25 fixedly connected to the outside of the support 20, and a reduction mechanism includes a screw 26 arranged parallel to or coaxial with the driven shaft. The screw 26 is threadedly connected to the sliding seat 21, and the first motor 25 can drive the screw 26 to rotate.

[0043] With the above configuration, the power adjustment mechanism drives the driven shaft to move axially via the first motor 25, the screw 26, and the sliding seat 21.

[0044] When the first motor 25 of this application drives the screw 26 to rotate around the axis, the screw 26 and the sliding seat 21 rotate relative to each other. The sliding seat 21 drives the driven shaft to move axially. The screw 26 has a self-locking function. After it stops rotating, the sliding seat 21 and the driven shaft will not move axially, which further improves the stability of the moving beam 4. Moreover, the screw 26 plays a deceleration role. The first motor 25 can adjust the moving beam 4 to be horizontal by using a common motor with lower precision.

[0045] In the first leveling method, i.e., leveling by axial movement of the driven shaft, the fixed key 13 and the slide groove 12 will slide relative to each other. In addition, axial force will also be generated between the sliding seat 21 and the end of the driven shaft. Over time, the fixed key 13 is prone to wear, resulting in a gap between it and the slide groove 12, or an axial gap will be generated between the sliding seat 21 and the driven shaft, thereby increasing the instability and error of the movement of the moving beam 4. Therefore, the following implementation method is proposed: Figures 5 to 6As shown, the transmission structure includes a housing 27, a first bevel gear 28, a second bevel gear 29, and a self-locking worm gear 30. The housing 27 is disposed between two rotating shafts 9, with the ends of the rotating shafts 9 extending into the housing 27 and rotatably connected to it. The first bevel gear 28 is fixedly connected to one end of each of the two rotating shafts 9 near the housing 27. The second bevel gear 29 is rotatably connected to the housing 27 and meshes with the first bevel gear 28. The self-locking worm gear 30 is fixedly connected to the second bevel gear 29. The servo system includes a second servo motor 31, a second drive pulley 32, and a second driven pulley. The pulley 33 and the second transmission belt 34 are fixedly connected to the gantry 3 and the second driving pulley 32. The second driven pulley 33 is fixedly connected to both sides of the housing 27. The second driven pulley 33 is connected to the second driving pulley 32 through the second transmission belt 34. The reduction mechanism is set as a reduction worm gear 35 rotatably connected in the housing 27. The reduction worm gear 35 cooperates with the self-locking worm wheel 30. The power adjustment mechanism is set as a second motor 36 fixedly installed outside the housing 27. The second motor 36 is connected to the reduction worm gear 35.

[0046] With the above settings, the lifting and leveling of the moving beam 4 can be achieved by rotating the shaft 9. The shaft 9 does not need to move axially, which reduces the degree of freedom of the shaft 9, thereby preventing the shaft 9 from loosening and improving the stability of the moving beam 4.

[0047] The reduction worm gear 35 and self-locking worm wheel 30 of this application have self-locking and reduction functions. When the second motor 36 is not working, the self-locking worm wheel 30 and the second bevel gear 29 are locked. When the second servo motor 31 of the servo system drives the housing 27 to move through the second driving pulley 32, the second transmission belt 34, and the second driven pulley 33, the housing 27 drives the two rotating shafts 9 on its left and right sides to rotate synchronously through the second bevel gear 29 and the first bevel gear 28, thereby driving the moving beam 4 to rise and fall. In this application, the second motor 36 is energized through the conductive slip ring, so that the second motor 36 on the housing 27 is always energized. After the servo system stops working, the second motor 36 drives the second bevel gear 29 to rotate through the reduction worm gear 35 and the self-locking worm wheel 30. The second bevel gear 29 drives the rotating shafts 9 on the left and right sides to rotate in opposite directions through the first bevel gears 28 on opposite sides, thereby causing the left and right ends of the moving beam 4 to move in opposite directions, and finally making the moving beam 4 horizontal.

[0048] As one implementation, multiple second bevel gears 29 are provided and arranged in a circular array around the axis of the first bevel gear 28 in the housing 27, and the self-locking worm gear 30 is fixedly connected to one of the second bevel gears 29.

[0049] The above settings reduce wear between the second bevel gear 29 and the first bevel gear 28.

[0050] In this application, multiple second bevel gears 29 are provided. When the housing 27 synchronously drives the two rotating shafts 9 through the second bevel gears 29 and the first bevel gears 28, the stress between the second bevel gears 29 and the first bevel gears 28 is reduced, thereby reducing the wear between the first bevel gears 28 and the second bevel gears 29.

[0051] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A lifting and leveling mechanism for the moving beam of a gantry grinding machine, characterized in that, The system includes a gantry frame, a moving beam, lead screws, and a drive worm gear. The moving beam is equipped with the grinding head of the gantry grinding machine. The lead screws are vertically rotatably connected to the left and right sides of the gantry frame. Both ends of the moving beam are threadedly connected to the corresponding lead screws and are in a horizontal position. The drive worm gear is fixedly connected to the upper end of the lead screws. The lifting and leveling mechanism also includes a power adjustment mechanism, a level mounted on the moving beam, two horizontally coaxial rotating shafts on the upper side of the gantry frame, and a servo system that drives the two rotating shafts to rotate synchronously via a transmission structure. A drive worm gear that cooperates with the drive worm gear is fixedly connected to the end of each rotating shaft. The power adjustment mechanism is connected to at least one of the rotating shafts via a reduction mechanism and is used to drive the two rotating shafts to rotate in opposite directions to make the moving beam horizontal. The transmission structure includes a housing, a first bevel gear, a second bevel gear, and a self-locking worm gear. The housing is disposed between two rotating shafts, the ends of which extend into the housing and are rotatably connected to it. The first bevel gear is fixedly connected to one end of each of the two rotating shafts near the housing. The second bevel gear is rotatably connected to the housing and meshes with the first bevel gear. The self-locking worm gear is fixedly connected to the second bevel gear. The servo system includes a second servo motor, a second driving pulley, a second driven pulley, and a second transmission belt. The second servo motor is fixedly connected to the gantry and connected to the second driving pulley. The second driven pulleys are fixedly connected to both the left and right sides of the housing. The second driven pulleys are connected to the second driving pulleys via the second transmission belt. The reduction mechanism is configured as a reduction worm gear rotatably connected in the housing, the reduction worm gear cooperating with the self-locking worm wheel, and the power adjustment mechanism is configured as a second motor fixedly installed outside the housing, the second motor being drivenly connected to the reduction worm gear.

2. The lifting and leveling mechanism for the moving beam of a gantry grinding machine according to claim 1, characterized in that, Multiple second bevel gears are provided and arranged in a circular array around the axis of the first bevel gear in the housing. The self-locking worm gear is fixedly connected to one of the second bevel gears.

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