A center-of-gravity driven vertical grinding head and bed assembly structure

Abstract

This invention relates to the field of grinding machine technology, and particularly to a center-gravity driven vertical grinding head and bed assembly structure, including a machine base, a bed, a guide assembly, a connecting assembly, and a grinding head. The bed is vertically fixed to the rear side of the top surface of the machine base, and the guide assembly is detachably assembled on both sides of the front end face of the bed. The connecting assembly is detachably assembled on the front side of the guide assembly. The grinding head is disposed on the front side of the bed, and its two sides are detachably assembled and connected to the connecting assembly. Two Z-axis motors are symmetrically arranged on the top front side of the bed, and Z-axis screws are vertically fixed to the bottom output ends of the two Z-axis motors. The components of this invention work together to fundamentally solve the core problem of single-sided drive in traditional vertical grinding heads, achieving high-precision and high-stability movement of the grinding head.

Description

Technical Field

[0001] This invention relates to the field of grinding machine technology, and in particular to a center-of-gravity driven vertical grinding head and bed assembly structure. Background Technology

[0002] In the field of precision machining, high-precision grinding equipment is the core equipment for achieving high-precision forming of parts and ensuring product quality. It is widely used in high-end manufacturing fields such as aerospace, precision instruments, and automotive parts. Its motion accuracy, response speed, and dynamic stability directly determine the dimensional accuracy, geometric tolerances, and surface quality of grinding. Among them, the center-of-gravity driven vertical grinding head and bed, as the core components of high-precision grinding equipment, have become a key breakthrough in improving the processing accuracy of grinding equipment due to their unique drive structure design.

[0003] The core design concept of center-of-gravity drive is to precisely design the point of application of the driving force near the center of gravity of the moving part. The core purpose is to eliminate the additional overturning torque caused by the driving force deviating from the center of gravity, thereby avoiding motion deviation caused by torque. Ultimately, this achieves higher motion accuracy, faster response speed, and more stable dynamic performance, adapting to the stringent precision requirements of grinding for high-end parts. It solves the precision bottleneck that traditional drive methods cannot overcome. Currently, the traditional drive methods for vertical grinding heads and beds in the industry are still mainly single-sided lead screw drive or single-sided linear motor drive. However, the aforementioned drive methods for traditional vertical grinding heads and beds still primarily rely on single-sided lead screw drives or single-sided linear motor drives. In these traditional drive methods, the point of application of the driving force deviates significantly from the center of gravity of the vertical grinding head. During the grinding head's movement, additional overturning moments are easily generated. These overturning moments act on the grinding head guide rails, causing uneven load distribution and leading to uneven wear and increased clearance. Over long-term operation, this further exacerbates the motion deviation, severely affecting grinding accuracy. Simultaneously, the overturning moment also causes lag in the grinding head's motion response and decreased dynamic stability. During high-speed grinding, vibrations are easily generated, which not only reduces the surface finish but also shortens the service life of core components such as the grinding head and guide rails, increasing equipment maintenance costs. This type of drive method has significant structural defects and is difficult to meet the requirements of high-precision grinding. Summary of the Invention

[0004] This invention solves the problems in related technologies and proposes a center-gravity driven vertical grinding head and bed assembly structure.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a center-gravity driven vertical grinding head and bed assembly structure, including a base, a bed, a guide assembly, a connecting assembly, and a grinding head. The bed is vertically fixed to the rear side of the top surface of the base, and the guide assembly can be detachably assembled on both sides of the front end face of the bed. The connecting assembly is detachably assembled on the front side of the guide assembly. The grinding head is located on the front side of the bed, and the two sides of the grinding head are detachably assembled and connected to the connecting assembly. Two Z-axis direction motors are symmetrically arranged on the top front side of the bed, and Z-axis direction screws are vertically fixed to the bottom output ends of the two Z-axis direction motors.

[0006] As a preferred embodiment, both sides of the front end face of the bed are vertically fixed with assembly frame plates, and a through groove is opened on the side of the assembly frame plate away from the bed. A locking component is provided on the rear end face of the assembly frame plate, and the locking component is used to lock the guide component on the assembly frame plate later.

[0007] As a preferred embodiment, the guide assembly includes a guide slide frame, an inner slide frame, and an assembly slide frame. Multiple locking slide groove plates are horizontally fixed on the rear end face of the guide slide frame along the vertical direction, and the multiple locking slide groove plates on the rear side of the guide slide frame are provided through the through groove on one side of the assembly frame plate. The inner slide frame is vertically slidably assembled inside the guide slide frame, and the assembly slide frame is vertically fixed on the front end face of the inner slide frame.

[0008] As a preferred embodiment, the locking assembly includes a perforated frame and a connecting plate. The perforated frame is vertically fixed to the rear end face of the assembly frame plate, and multiple connecting plates are arranged vertically on one side of the perforated frame. Multiple locking inserts are horizontally fixed between the multiple connecting plates, and the multiple locking inserts are horizontally and one-to-one limited sliding inserts with multiple locking slide plates. A sliding rod is horizontally fixed to one end of the connecting plate near the perforated frame, and the sliding rod is slidably inserted through the perforated frame. A locking electric cylinder is horizontally fixed on the perforated frame, and the output end of the locking electric cylinder is fixed on the connecting plate.

[0009] As a preferred embodiment, multiple inner sliding grooves are vertically fixed on the inner wall of the inner sliding frame, and a rotating ring is horizontally fixed on the outer vertical end face of the inner sliding frame. A pressure roller is horizontally rotatably connected to the outer rotating ring of the inner sliding frame, and a pressure groove is formed on the outer circumferential surface of the pressure roller.

[0010] As a preferred embodiment, a guide slide is vertically fixed inside the guide slide frame, and the guide slide is vertically slidably assembled with the inner slide groove inside the inner slide frame. Multiple pressure strips are vertically fixed on the inner wall of the guide slide frame, and the pressure strips are limited and engaged with the pressure groove on the outer pressure roller of the inner slide frame.

[0011] As a preferred embodiment, guide grooves are symmetrically and horizontally fixed on the front end face of the assembled slide frame, and a rotating cylinder is horizontally fixed in the middle of the front end face of the assembled slide frame. A locking screw cylinder is vertically rotatably connected in the rotating cylinder, and locking studs are vertically threaded at both the upper and lower ends of the locking screw cylinder. A locking insert is vertically fixed at the end of the locking stud away from the locking screw cylinder.

[0012] As a preferred embodiment, the connecting assembly includes a connecting base plate and an adjusting slide frame. The connecting base plate is vertically positioned at the front of the assembly slide frame, and assembly slide strips are horizontally fixed on both the upper and lower sides of the rear end face of the connecting base plate. The assembly slide strips are horizontally slidably inserted into the guide groove of the assembly slide frame, and locking cylinders are vertically fixed on the adjacent end faces of the two assembly slide strips on the rear side of the connecting base plate. The locking cylinders are limited and inserted into the locking pins on the adjacent locking studs. A translation slide frame plate is vertically fixed at one end of the connecting base plate, and an adjusting slide frame is horizontally slidably inserted into the translation slide frame plate.

[0013] As a preferred embodiment, an adjusting motor is horizontally fixed on the front end face of the connecting base plate, and an adjusting gear is fixed on the end of the adjusting motor facing the connecting base plate. A rack column is horizontally fixed on one end face of the adjusting slide frame, and the rack column meshes with the adjusting gear. A hole seat is horizontally fixed on the other end face of the adjusting slide frame, and a connecting column is vertically inserted through the hole seat.

[0014] As a preferred embodiment, a damping spring is vertically sleeved on the outside of the connecting column, and the two ends of the damping spring are fixed to the bottom of the hole seat and the connecting column, respectively. A damping rod is vertically fixed at the end of the connecting column, and the other end of the damping rod is fixed to the hole seat. The adjacent ends of the connecting column of the adjusting slide frame are vertically rotatably connected with connecting studs. A connecting screw cylinder is vertically fixed in the middle of the vertical end face on both sides of the grinding head, and the upper and lower ends of the connecting screw cylinder are threadedly assembled with the adjacent connecting studs.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This center-of-gravity driven vertical grinding head and bed assembly structure aims to solve the core pain points of traditional vertical grinding heads, where single-sided drive causes the driving force to deviate from the center of gravity, generating additional overturning torque, which in turn leads to uneven guide rail load, uneven wear, insufficient machining accuracy, and poor dynamic stability. Through the coordinated operation of the machine base, bed, guide components, connecting components, and grinding head, combined with a center-of-gravity drive design with dual Z-axis motors, it achieves precise guidance, stable lifting and lowering of the grinding head, and stable assembly, eliminating additional overturning torque and improving the motion accuracy, response speed, and dynamic stability of the grinding equipment, thus adapting to high-precision grinding requirements. First, the equipment assembly and pre-commissioning stage lays the foundation for center-of-gravity driven and precise grinding of the grinding head; second, the grinding head position calibration and center-of-gravity alignment stage ensures that the point of application of the driving force coincides with the center of gravity of the grinding head, avoiding overturning torque; third, the center-of-gravity driven grinding stage achieves stable lifting and lowering of the grinding head and precise grinding, solving the pain points of traditional drives.

[0016] The entire structure operates in a coordinated manner. The machine base and bed provide a stable mounting foundation, while the dual Z-axis motors drive the center of gravity symmetrically, eliminating additional overturning torque. The guide assembly, through multiple guiding and limiting structures, ensures precise lifting and lowering of the grinding head. The connecting assembly securely connects the grinding head to the guide assembly, while a vibration damping structure reduces grinding vibration. The locking assembly enables quick locking and disassembly of all components, improving maintenance convenience. The coordinated operation of all components fundamentally solves the core pain point of traditional vertical grinding heads with single-sided drive, achieving high-precision and high-stability movement of the grinding head. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the gravity-driven vertical grinding head and the bed assembly structure; Figure 2 This is an exploded structural diagram of the gravity-driven vertical grinding head and bed assembly structure; Figure 3 This is a schematic diagram of the bed in a disassembled state in an embodiment of the gravity-driven vertical grinding head and bed assembly structure. Figure 4 This is a schematic diagram of the locking component in the disassembled state in an embodiment of the gravity-driven vertical grinding head and bed assembly structure. Figure 5 This is a structural schematic diagram of the guide component in the disassembled state in an embodiment of the center-of-gravity driven vertical grinding head and bed assembly structure; Figure 6 This is a schematic diagram of the inner sliding frame in the disassembled state in an embodiment of the gravity-driven vertical grinding head and bed assembly structure. Figure 7 This is a structural diagram of the grinding head in its disassembled state in an embodiment of the center-gravity driven vertical grinding head and bed assembly structure. Figure 8 This is a structural schematic diagram of the connecting components in an embodiment of a center-gravity driven vertical grinding head and bed assembly structure, in an exploded state.

[0018] In the diagram: 1. Machine base; 2. Bed; 21. Assembled frame plate; 22. Locking assembly; 221. Perforated strip frame; 222. Locking electric cylinder; 223. Connecting plate; 224. Slide rod; 225. Locking insert frame; 3. Guide assembly; 31. Guide slide frame; 32. Guide slide bar; 33. Pressure bar; 34. Locking slide groove plate; 35. Inner slide frame; 351. Inner slide groove; 352. Rotary ring; 353. Pressure roller; 354. Pressure groove; 36. Assembled slide bar frame; 361. Rotary drum; 362. Lock 363. Locking stud; 364. Locking insert; 4. Z-axis motor; 5. Z-axis screw; 6. Connecting assembly; 61. Connecting base plate; 62. Assembled slide rail; 621. Locking insert; 63. Translation slide plate; 64. Adjusting motor; 641. Adjusting gear; 65. Adjusting slide frame; 66. Rack column; 67. Hole seat; 68. Connecting column; 681. Vibration damping spring; 682. Connecting stud; 683. Damping rod; 7. Grinding head; 71. Connecting screw. Detailed Implementation

[0019] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0020] like Figure 1 , Figures 2 to 3As shown, a center-of-gravity driven vertical grinding head and bed assembly structure includes a base 1, a bed 2, a guide assembly 3, a connecting assembly 6, and a grinding head 7. The bed 2 is vertically fixed to the rear side of the top surface of the base 1, and the guide assembly 3 is detachably assembled on both sides of the front side of the bed 2. The connecting assembly 6 is detachably assembled on the front side of the guide assembly 3. The grinding head 7 is located on the front side of the bed 2, and its two sides are detachably connected to the connecting assembly 6. Two Z-axis motors 4 are symmetrically arranged on the top front side of the bed 2, and Z-axis screws 5 are vertically fixed to the bottom output ends of the two Z-axis motors 4. By assembling the base 1, bed 2, guide assembly 3, connecting assembly 6, and grinding head 7, and connecting the various components through detachable assembly, the entire assembly structure has high flexibility and adjustability. Specifically, the base 1 provides a stable support foundation for the entire device, and the bed 2 is connected to the top surface of the base 1, serving as a load-bearing and guiding component. By setting guide components 3 on both sides of the front face of the bed 2, the linear movement of the grinding head 7 during the feeding process is ensured to be more precise, reducing product grinding errors caused by non-linear motion. The detachable assembly design of the guide components 3 and the connecting components 6 allows the connecting components 6 to be flexibly connected to the grinding head 7, meeting the installation requirements of different types of grinding heads. The cooperation of the Z-axis motor 4 and the Z-axis screw 5 provides a precise Z-axis feed mechanism. By driving the screw to rotate, the screw drives the grinding head 7 to move up and down, thus achieving precise control in the Z-axis direction. This linear feed method not only improves grinding accuracy but also effectively reduces energy consumption and wear. Therefore, through the ingenious design and mutual cooperation of components such as the base 1, bed 2, guide assembly 3, connecting assembly 6, and grinding head 7, the effect of precise grinding and high machining accuracy is achieved. That is, the reason lies in the mutual cooperation of each component and their respective functions, thereby realizing high-precision grinding. In addition, through the cooperation of Z-axis motor 4 and Z-axis screw 5, the problems of insufficient feed accuracy and low efficiency in the existing vertical grinding head during the processing are solved, realizing high-precision and high-efficiency grinding.

[0021] In one embodiment, such as Figure 3 and 4As shown, both sides of the front end face of the bed 2 are vertically fixed with assembly frame plates 21, and a through groove is opened on the side of the assembly frame plate 21 away from the bed 2. A locking component 22 is provided on the rear end face of the assembly frame plate 21, and the locking component 22 is used to lock the guide component 3 on the assembly frame plate 21 later. The guide component 3 includes a guide slide frame 31, an inner slide frame 35 and an assembly slide bar frame 36. Multiple locking slide groove plates 34 are horizontally fixed in the vertical direction on the rear end face of the guide slide frame 31, and the multiple locking slide groove plates 34 on the rear side of the guide slide frame 31 are arranged through the through groove on one side of the assembly frame plate 21. The inner slide frame 35 is vertically slidably assembled inside the guide slide frame 31, and the assembly slide bar frame 36 is vertically fixed on the front end face of the inner slide frame 35. The locking assembly 22 includes a perforated strip frame 221 and a connecting plate 223. The perforated strip frame 221 is vertically fixed to the rear end face of the assembly frame plate 21, and multiple connecting plates 223 are arranged vertically on one side of the perforated strip frame 221. Multiple locking insert frames 225 are horizontally fixed between the multiple connecting plates 223, and the multiple locking insert frames 225 are horizontally and one-to-one limited sliding inserts with multiple locking sliding groove plates 34. A sliding rod 224 is horizontally fixed to one end of the connecting plate 223 near the perforated strip frame 221, and the sliding rod 224 slides with the perforated strip frame 221. A locking electric cylinder 222 is horizontally fixed on the through-hole strip frame 221, and the output end of the locking electric cylinder 222 is fixed on the connecting plate 223. The assembly frame plate 21 can be vertically fixed to both sides of the front end face of the bed 2, and the guide assembly 3 can be installed on the assembly frame plate 21 via the guide slide frame 31 and the locking assembly 22. Therefore, this structure allows for convenient installation and disassembly, improving the flexibility and versatility of the equipment, thus simplifying the installation process and improving work efficiency. Multiple horizontal locking slide plates 34 are provided on the rear end face of the guide slide frame 31. These locking slide plates 34 can horizontally pass through the through groove on one side of the assembly frame plate 21, ensuring a firm connection between the guide slide frame 31 and the assembly frame plate 21. The inner slide frame 35 inside the guide slide frame 31 can slide vertically, making the sliding guidance smoother and improving the accuracy and stability of the movement. The locking assembly 22 achieves precise positioning of the guide assembly 3 through the working principles of the perforated frame 221, connecting plate 223, locking insert frame 225, and locking electric cylinder 222. When the locking electric cylinder 222 is activated, the connecting plate 223 slides within the perforated frame 221 via the slide rod 224, thereby driving multiple locking insert frames 225 to move horizontally. Through this design, multiple locking slide plates 34 can be pressed together, thus achieving precise locking of the guide assembly 3 on the assembled frame plate 21.

[0022] In one embodiment, such as Figure 4 and 5As shown, multiple inner sliding grooves 351 are vertically fixed on the inner wall of the inner sliding frame 35, and a rotating ring 352 is horizontally fixed on the outer vertical end face of the inner sliding frame 35. A pressure roller 353 is horizontally rotatably connected to the outer rotating ring 352 of the inner sliding frame 35, and a pressure groove 354 is formed on the outer circumferential surface of the pressure roller 353. A guide slide 32 is vertically fixed inside the guide sliding frame 31, and the guide slide 32 is vertically slidably assembled with the inner sliding grooves 351 inside the inner sliding frame 35. Multiple pressure strips 33 are vertically fixed on the inner wall of the guide sliding frame 31, and the pressure strips 33 are limited and engaged with the pressure grooves 354 on the outer pressure roller 353 of the inner sliding frame 35. The front end face of the assembled sliding frame 36 is symmetrically and horizontally fixed with guide grooves, and a rotating cylinder 361 is horizontally fixed in the middle of the front end face of the assembled sliding frame 36. A locking screw cylinder 362 is vertically rotatably connected in the rotating cylinder 361, and locking studs 363 are vertically threaded at both the upper and lower ends of the locking screw cylinder 362. A locking insert 364 is vertically fixed at the end of the locking stud 363 away from the locking screw cylinder 362. By setting the technical features of the inner sliding frame 35 and the guide sliding frame 31, multiple inner sliding grooves 351 are vertically fixed on the inner wall of the inner sliding frame 35, and a rotating ring 352 is horizontally fixed on its outer vertical end face. This design allows the inner sliding frame 35 to slide vertically along the guide strip 32 inside the guide sliding frame 31. Meanwhile, a horizontally rotatable pressure roller 353 is connected to the outer rotating ring 352 of the inner sliding frame 35, and a pressure groove 354 is provided on the outer circumferential surface of the pressure roller 353, so that the pressure roller 353 can form a limiting engagement with the pressure strip 33 fixed inside the guide sliding frame 31 when rotating, thereby achieving precise positioning and stable sliding of the inner sliding frame 35. In this case, the guide strip 32 is vertically slidably assembled with the inner sliding groove 351 inside the inner sliding frame 35, and the pressure strip 33 is limited and engaged with the pressure groove 354 on the outer pressure roller 353 of the inner sliding frame 35, ensuring the stability and reliability of the inner sliding frame 35 during the sliding process. By setting up an assembly sliding frame 36, a guide groove is symmetrically and horizontally fixed on its front end face, and a rotating cylinder 361 is fixed in the middle of the front end face. The linkage with the inner sliding frame 35 is achieved through a locking screw 362 vertically rotatably connected in the rotating cylinder 361. Both ends of the locking screw cylinder 362 are vertically threaded with locking studs 363. The end of the locking stud 363 furthest from the locking screw cylinder 362 is vertically fixed with a locking insert 364. This design allows the displacement of the inner sliding frame 35 to be limited or released via the locking insert 364, thus enabling the installation and disassembly of the inner sliding frame 35. This design achieves precise assembly and stable sliding between the inner sliding frame 35 and the guide sliding frame 31, ensuring good guidance and limiting of the inner sliding frame 35 during sliding and guaranteeing the system's operational stability. Simultaneously, the design of the assembled sliding frame 36 makes the installation and disassembly of the inner sliding frame 35 more convenient and quick, effectively improving the system's maintainability and ease of use.

[0023] In one embodiment, such as Figure 7 and8 As shown, the connecting assembly 6 includes a connecting base plate 61 and an adjusting sliding frame 65. The connecting base plate 61 is vertically arranged at the front of the assembly slide frame 36, and the upper and lower sides of the rear end face of the connecting base plate 61 are both horizontally fixed with assembly slide grooves 62. The assembly slide grooves 62 are horizontally slidably inserted into the guide grooves of the assembly slide frame 36, and the two adjacent end faces of the two assembly slide grooves 62 on the rear side of the connecting base plate 61 are vertically fixed with locking inserts 621, and the locking inserts 621 are limited and inserted into the locking inserts 364 on the adjacent locking studs 363. One end of the connecting base plate 61 is vertically fixed with a translation slide frame plate 63, and the adjusting sliding frame 65 is horizontally slidably inserted into the translation slide frame plate 63. An adjusting motor 64 is horizontally fixed on the front end face of the connecting base plate 61, and an adjusting gear 641 is fixed on one end of the adjusting motor 64 facing the connecting base plate 61. A rack column 66 is horizontally fixed on one end face of the adjusting slide frame 65, and the rack column 66 meshes with the adjusting gear 641. A hole seat 67 is horizontally fixed on the other end face of the adjusting slide frame 65, and a connecting column 68 is vertically inserted through the hole seat 67. A damping spring 681 is vertically sleeved on the outside of the connecting column 68, and the two ends of the damping spring 681 are fixed to the bottom end of the hole seat 67 and the connecting column 68, respectively. A damping rod 683 is vertically fixed at one end of the connecting column 68, and the other end of the damping rod 683 is fixed to the hole seat 67. Connecting studs 682 are vertically rotatably connected to adjacent ends of the connecting column 68 of the adjusting slide frame 65. Connecting screw cylinders 71 are vertically fixed in the middle of the vertical end faces on both sides of the grinding head 7, and the upper and lower ends of the connecting screw cylinders 71 are connected to the adjacent connecting studs 682. The threaded assembly connection, through the technical features of the connecting component 6, integrates the guiding engagement of the assembly slide bar 62 and the assembly slide frame 36, the limiting insertion of the locking sleeve 621 and the locking stud 363, and the sliding and rotating engagement of the adjusting slide frame 65 and the connecting post 68. Therefore, it achieves translation and unlocking in the horizontal direction, as well as adjustment and buffering sliding in the vertical direction, thus realizing fast and precise connection and unlocking functions, while also improving connection stability. The assembly slide bar 62 of the connecting seat plate 61 slides on the guide groove of the assembly slide frame 36, ensuring the overall translational accuracy and stability of the connecting component 6. Furthermore, the engagement of the locking sleeve 621 and the locking stud 363 enables one-way locking, preventing loosening due to misoperation. The adjusting slide frame 65 achieves translation through the meshing of the rack post 66 and the adjusting gear 641 of the adjusting motor 64, giving the grinding head 7 the function of horizontal adjustment. The connecting column 68 of the adjusting slide frame 65 has a vibration damping spring 681 and a damping rod 683 on its outside, which play a role in vibration reduction and buffering, avoiding impact damage to mechanical parts during repeated adjustment, ensuring smooth adjustment operation and long service life of the equipment. The grinding head 7 is threadedly connected to the connecting stud 682 through the connecting screw 71, realizing adjustment in the vertical direction, further enhancing the flexibility and stability of the overall device.

[0024] The working principle of this invention is as follows: First, place and fix the base 1 horizontally as the installation foundation for the entire assembly structure, ensuring that the installation is firm and secure. Then, fix the bed 2 vertically to the rear of the top surface of the base 1. Fix the assembly frame plate 21 vertically on both sides of the front face of the bed 2. A through slot is opened on the side of the assembly frame plate 21 away from the bed 2 to provide an installation reference for the assembly of the guide component 3. Install two Z-axis motors 4 symmetrically on the top front side of the bed 2, ensuring that the two motors are symmetrically distributed on both sides of the center of gravity of the grinding head 7. Fix the Z-axis screw 5 vertically to the bottom output end of the two Z-axis motors 4. Debug the Z-axis motors 4 to ensure that they can drive the Z-axis screw 5 to rotate synchronously and smoothly, providing power for the center of gravity drive of the grinding head 7 to lift and lower, thus structurally avoiding the defects of single-sided drive.

[0025] The locking assembly 22 is used to lock and fix the guide assembly 3. The perforated strip frame 221 is vertically fixed to the rear end face of the assembly frame plate 21. Multiple connecting plates 223 are arranged vertically on one side of the perforated strip frame 221. Multiple locking insert frames 225 are horizontally fixed between the multiple connecting plates 223. The sliding rod 224 is horizontally fixed to the end of the connecting plate 223 near the perforated strip frame 221, so that the sliding rod 224 slides through the perforated strip frame 221. The locking electric cylinder 222 is horizontally fixed on the perforated strip frame 221, so that the output end of the locking electric cylinder 222 is fixed on the connecting plate 223. The locking electric cylinder 222 is adjusted to ensure that it can drive the connecting plate 223 to slide horizontally along the sliding rod 224, thereby driving the locking insert frames 225 to move synchronously and realize the locking and unlocking actions.

[0026] The guide assembly 3 is used to provide precise guidance for the lifting and lowering of the grinding head 7 and avoid movement deviation. Multiple locking slide plates 34 are horizontally fixed to the rear end face of the guide slide frame 31 in the vertical direction. Multiple locking slide plates 34 on the rear side of the guide slide frame 31 pass through the through groove on one side of the assembly frame plate 21, so that the locking slide plates 34 are horizontally aligned with the locking insert frame 225. The locking electric cylinder 222 is activated, and the connecting plate 223 is driven to move the locking insert frame 225 horizontally, so that the multiple locking insert frames 225 and the multiple locking slide plates 34 are limited and slidably inserted one by one, realizing the detachable locking and fixing of the guide slide frame 31 and the assembly frame plate 21.

[0027] A guide slide bar 32 is vertically fixed inside the guide slide frame 31, and multiple pressure strips 33 are vertically fixed on the inner wall of the guide slide frame 31. The inner slide groove 351 is vertically fixed on the inner wall of the inner slide frame 35, and the rotating ring 352 is horizontally fixed on the outer vertical end face of the inner slide frame 35. The pressure roller 353 is horizontally rotatably connected to the rotating ring 352, and a pressure groove 354 is opened on the outer circumferential surface of the pressure roller 353. The inner slide frame 35 is vertically slidably assembled inside the guide slide frame 31, so that the guide slide bar 32 and the inner slide groove 351 inside the inner slide frame 35 are vertically slidably assembled. The pressure strips 33 and the pressure groove 354 on the pressure roller 353 are limited and locked together. The lifting flexibility of the inner slide frame 35 is adjusted to ensure that it slides smoothly vertically along the guide slide frame 31 without deviation or jamming. The assembled slide bar frame 36 is vertically fixed on the front end face of the inner slide frame 35, completing the assembly of the guide component 3.

[0028] A rotating cylinder 361 is horizontally fixed in the middle of the front end face of the assembled sliding frame 36. A locking screw cylinder 362 is vertically connected in the rotating cylinder 361. Locking studs 363 are vertically threaded at both the upper and lower ends of the locking screw cylinder 362. A locking insert 364 is vertically fixed at the end of the locking stud 363 away from the locking screw cylinder 362. The locking screw cylinder 362 is rotated to adjust the flexibility of the extension and retraction of the locking stud 363, ensuring that the locking insert 364 can accurately achieve insertion and locking.

[0029] The connecting component 6 is used to connect the guide component 3 and the grinding head 7, and also serves as a vibration damping and buffering function. The assembly slide strip 62 is horizontally fixed on the upper and lower sides of the rear end face of the connecting seat plate 61, and the locking cylinder 621 is vertically fixed on the adjacent end faces of the two assembly slide strips 62, so that the locking cylinder 621 and the locking post 364 are precisely aligned. The connecting seat plate 61 is horizontally slidably inserted into the guide groove of the assembly slide frame 36 through the assembly slide strip 62. The locking screw 362 is rotated to drive the locking stud 363 to extend and retract, so that the locking post 364 is inserted into the locking cylinder 621, thereby realizing the detachable fixing of the connecting seat plate 61 and the assembly slide frame 36.

[0030] Vertically fix the sliding frame plate 63 to one end of the connecting base plate 61, and horizontally slide the adjusting frame 65 onto the sliding frame plate 63. Horizontally fix the adjusting motor 64 to the front end face of the connecting base plate 61, fix the adjusting gear 641 to the end of the adjusting motor 64 facing the connecting base plate 61, and horizontally fix the rack column 66 to one end face of the adjusting frame 65, so that the rack column 66 meshes with the adjusting gear 641. Adjust the adjusting motor 64 to ensure it can drive the adjusting frame 65. The slide plate 63 slides horizontally and smoothly. The hole seat 67 is horizontally fixed on the other end face of the adjusting slide frame 65. The connecting column 68 is vertically inserted into the hole seat 67. A damping spring 681 is vertically sleeved on the outside of the connecting column 68. The two ends of the damping spring 681 are fixed to the bottom of the hole seat 67 and the connecting column 68, respectively. The two ends of the damping rod 683 are fixed to the end of the connecting column 68 and the hole seat 67, respectively, so as to play a role in damping and buffering, and reduce the impact of grinding vibration on machining accuracy.

[0031] The connecting stud 682 is vertically rotated and connected to the adjacent end of the connecting column 68 of the adjusting slide frame 65. The connecting screw 71 is vertically fixed to the middle of the vertical end face on both sides of the grinding head 7, so that the upper and lower ends of the connecting screw 71 are threadedly connected to the adjacent connecting stud 682, thus completing the detachable fixing of the grinding head 7 and the connecting assembly 6. The adjusting motor 64 is adjusted to drive the adjusting slide frame 65 to move, so that the center of gravity of the grinding head 7 is precisely aligned with the midpoint of the line connecting the driving force points of the two Z-axis motors 4, ensuring that the core design of center of gravity drive is implemented and fundamentally eliminating the additional overturning moment.

[0032] Next, start the adjusting motor 64 to drive the adjusting gear 641 to rotate. The adjusting gear 641 meshes with the rack column 66, causing the adjusting slide frame 65 to slide horizontally along the translation slide frame plate 63. The adjusting slide frame 65 drives the grinding head 7 to move synchronously until the center of gravity of the grinding head 7 is located on the symmetrical center line of the two Z-axis motors 4. This ensures that the driving force points of the two Z-axis screws 5 are symmetrically distributed on both sides of the center of gravity of the grinding head 7, achieving the core requirement of center of gravity drive and avoiding the overturning moment caused by unilateral driving force.

[0033] Reactivate the locking electric cylinder 222 to drive the locking insert frame 225 to tightly engage with the locking slide plate 34, ensuring that the guide slide frame 31 and the assembly frame plate 21 are firmly fixed; rotate the locking screw 362 to lock the locking pin 364 and the locking insert 621, preventing the connecting seat plate 61 from shifting; check the threaded connection status of the connecting stud 682 and the connecting screw 71 to ensure that the grinding head 7 and the connecting assembly 6 are firmly installed, providing a guarantee for the stable lifting and lowering of the grinding head 7.

[0034] Start the two Z-axis motors 4 to drive the two Z-axis screws 5 to rotate synchronously. The Z-axis screws 5 and the inner slide frame 35 are matched with the preset screw hole structure of the inner slide frame, which drives the inner slide frame 35 to rise and fall vertically along the guide rail 32 of the guide slide frame 31. The inner slide frame 35 drives the connecting component 6 and the grinding head 7 to rise and fall synchronously. During the debugging process, observe the cooperation state between the pressure roller 353 and the pressure bar 33 to ensure that the inner slide frame 35 rises and falls smoothly without deviation or jamming. The limiting and locking function of the pressure groove 354 and the pressure bar 33 further improves the guiding accuracy, avoids tilting of the grinding head 7 during the rising and falling process, and ensures the motion accuracy.

[0035] Secondly, according to the grinding requirements, two Z-axis motors 4 are started to drive two Z-axis screws 5 to rotate synchronously and at the same speed. Since the two Z-axis motors 4 are symmetrically distributed on both sides of the center of gravity of the grinding head 7, the point of application of the driving force is precisely close to the center of gravity of the grinding head 7, which completely eliminates the additional overturning torque generated by traditional single-sided drive and avoids the occurrence of guide rail eccentricity.

[0036] Driven by the screw 5 in the Z-axis direction, the inner slide frame 35 rises and falls vertically and smoothly along the guide slide bar 32 of the guide slide frame 31. The sliding engagement between the guide slide bar 32 and the inner slide groove 351, and the limiting engagement between the pressure bar 33 and the pressure roller 353, further improve the lifting and guiding accuracy of the grinding head 7, ensuring that the grinding head 7 moves without deviation or shaking. At the same time, the vibration damping spring 681 and the damping rod 683 in the connecting assembly 6 work together to effectively absorb the vibration generated during the grinding process, avoid the vibration from affecting the machining accuracy, and reduce the wear of the core components such as the grinding head 7 and the guide rail, thereby extending the service life of the equipment and reducing maintenance costs.

[0037] After the grinding head 7 is raised and lowered to the preset grinding position, the Z-axis motor 4 is kept running stably to keep the grinding head 7 at the preset height, and the grinding head 7 is started to perform high-precision grinding. During the grinding process, the center-of-gravity drive design makes the motion response speed of the grinding head 7 faster and the dynamic stability better, avoiding problems such as motion response lag and vibration caused by traditional single-sided drive, and ensuring the dimensional accuracy, form and position tolerance and surface quality of the grinding process. The precise guidance of the guide component 3 and the stable connection of the connecting component 6 further ensure the motion accuracy of the grinding head 7, avoid problems such as uneven wear of the guide rail and increased gap, and can maintain high processing accuracy even after long-term operation.

[0038] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A gravity-driven vertical grinding head and bed assembly structure, characterized in that, The machine includes a base (1), a bed (2), a guide assembly (3), a connecting assembly (6), and a grinding head (7). The bed (2) is vertically fixed to the rear side of the top surface of the base (1), and the guide assembly (3) can be detachably assembled on both sides of the front end face of the bed (2). The connecting assembly (6) is detachably assembled on the front side of the guide assembly (3). The grinding head (7) is located on the front side of the bed (2), and the two sides of the grinding head (7) are detachably assembled and connected to the connecting assembly (6). Two Z-axis motors (4) are symmetrically arranged on the top front side of the bed (2), and Z-axis screws (5) are vertically fixed to the bottom output ends of the two Z-axis motors (4).

2. The gravity-driven vertical grinding head and bed assembly structure according to claim 1, characterized in that: The front end face of the bed (2) is vertically fixed with assembly frame plates (21) on both sides, and the side of the assembly frame plate (21) away from the bed (2) is provided with a through groove. The rear end face of the assembly frame plate (21) is provided with a locking component (22), and the locking component (22) is used to lock the guide component (3) on the assembly frame plate (21) in the later stage.

3. The gravity-driven vertical grinding head and bed assembly structure according to claim 2, characterized in that: The guide assembly (3) includes a guide slide frame (31), an inner slide frame (35), and an assembly slide frame (36). Multiple locking slide plates (34) are horizontally fixed on the rear end face of the guide slide frame (31) in the vertical direction. The multiple locking slide plates (34) on the rear side of the guide slide frame (31) are arranged through the through groove on one side of the assembly frame plate (21). The inner slide frame (35) is vertically slidably assembled inside the guide slide frame (31), and the assembly slide frame (36) is vertically fixed on the front end face of the inner slide frame (35).

4. The gravity-driven vertical grinding head and bed assembly structure according to claim 3, characterized in that: The locking assembly (22) includes a perforated frame (221) and a connecting plate (223). The perforated frame (221) is vertically fixed to the rear end face of the assembly frame plate (21). Multiple connecting plates (223) are arranged vertically on one side of the perforated frame (221). Multiple locking inserts (225) are horizontally fixed between the multiple connecting plates (223). The multiple locking inserts (225) and multiple locking slide plates (34) are horizontally limited and slidably inserted. A sliding rod (224) is horizontally fixed at one end of the connecting plate (223) near the perforated frame (221). The sliding rod (224) is slidably inserted through the perforated frame (221). A locking electric cylinder (222) is horizontally fixed on the perforated frame (221). The output end of the locking electric cylinder (222) is fixed on the connecting plate (223).

5. The gravity-driven vertical grinding head and bed assembly structure according to claim 3, characterized in that: The inner wall of the inner sliding frame (35) has multiple inner sliding grooves (351) vertically fixed, and a rotating ring (352) is horizontally fixed on the outer vertical end face of the inner sliding frame (35). A pressure roller (353) is horizontally rotatably connected to the outer rotating ring (352) of the inner sliding frame (35), and a pressure groove (354) is opened on the outer circumferential surface of the pressure roller (353).

6. The gravity-driven vertical grinding head and bed assembly structure according to claim 5, characterized in that: The guide slide frame (31) has a guide slide bar (32) vertically fixed inside, and the guide slide bar (32) is vertically slidably assembled with the inner slide groove (351) inside the inner slide frame (35). Multiple pressure strips (33) are vertically fixed on the inner wall of the guide slide frame (31), and the pressure strips (33) are limited and engaged with the pressure groove (354) on the pressure roller (353) on the outer side of the inner slide frame (35).

7. The gravity-driven vertical grinding head and bed assembly structure according to claim 3, characterized in that: The front end face of the assembled sliding frame (36) is symmetrically and horizontally fixed with guide grooves, and the middle of the front end face of the assembled sliding frame (36) is horizontally fixed with a rotating cylinder (361). A locking screw cylinder (362) is vertically rotatably connected in the rotating cylinder (361), and both the upper and lower ends of the locking screw cylinder (362) are vertically threaded with locking studs (363). A locking insert (364) is vertically fixed at the end of the locking stud (363) away from the locking screw cylinder (362).

8. The gravity-driven vertical grinding head and bed assembly structure according to claim 7, characterized in that: The connecting assembly (6) includes a connecting base plate (61) and an adjusting slide frame (65). The connecting base plate (61) is vertically arranged at the front of the assembly slide frame (36), and the upper and lower sides of the rear end face of the connecting base plate (61) are both horizontally fixed with assembly slide strips (62). The assembly slide strips (62) are horizontally slidably inserted into the guide groove of the assembly slide frame (36), and the two adjacent end faces of the two assembly slide strips (62) on the rear side of the connecting base plate (61) are vertically fixed with locking inserts (621), and the locking inserts (621) are limited and inserted into the locking inserts (364) on the adjacent locking studs (363). One end of the connecting base plate (61) is vertically fixed with a translation slide frame plate (63), and the adjusting slide frame (65) is horizontally slidably inserted into the translation slide frame plate (63).

9. The gravity-driven vertical grinding head and bed assembly structure according to claim 8, characterized in that: An adjusting motor (64) is horizontally fixed on the front end face of the connecting base plate (61), and an adjusting gear (641) is fixed on one end of the adjusting motor (64) facing the connecting base plate (61). A rack column (66) is horizontally fixed on one end face of the adjusting slide frame (65), and the rack column (66) meshes with the adjusting gear (641). A hole seat (67) is horizontally fixed on the other end face of the adjusting slide frame (65), and a connecting column (68) is vertically inserted through the hole seat (67).

10. The gravity-driven vertical grinding head and bed assembly structure according to claim 9, characterized in that: The connecting column (68) is vertically sleeved with a damping spring (681), and the two ends of the damping spring (681) are respectively fixed to the bottom end of the hole seat (67) and the connecting column (68). The end of the connecting column (68) is vertically fixed with a damping rod (683), and the other end of the damping rod (683) is fixed to the hole seat (67). The adjacent ends of the connecting column (68) of the adjusting slide frame (65) are vertically rotatably connected with connecting studs (682). The middle of the vertical end face on both sides of the grinding head (7) is vertically fixed with a connecting screw (71), and the upper and lower ends of the connecting screw (71) are threadedly assembled with the adjacent connecting studs (682).

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