Miniature four-axis numerical control multifunctional grinding machine structure

Abstract

The utility model discloses a miniature four-axis numerical control multifunctional grinding machine structure which comprises a machine frame, a workbench tool rest module device is arranged on the left side of the machine frame, a main shaft module device is arranged on the right side of the machine frame, and the main shaft module device comprises a supporting seat installed on the right side of the machine frame. Two pairs of Z-axis linear guide rails are installed on the top face of the supporting seat, a Z-axis servo motor installation seat is installed on the top face of the supporting seat, a Z-axis servo motor is installed on the Z-axis servo motor installation seat, a motor shaft of the Z-axis servo motor is connected with a Z-axis ball screw through a Z-axis coupler, a spindle box is installed on four sliding blocks of the Z-axis linear guide rails, and a spindle is installed on the spindle box. And a Z-axis nut seat connected with the Z-axis ball screw is arranged at the bottom of the spindle box. The four-axis linkage mechanism is compact in structure and composed of the X-axis linkage mechanism, the Z-axis linkage mechanism, the A-axis linkage mechanism and the C-axis linkage mechanism, the rigidity and the stability of the whole machine are improved, the quality and the efficiency of machined products are improved, production requirements are met, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, specifically to a structure of a miniature four-axis CNC multi-functional grinding machine. Background Technology

[0002] Currently, most CNC end-face grinding machines on the market employ a three-axis structure (horizontal, longitudinal, and yaw angle) for processing the beveled and flat surfaces of ordinary kitchen knives, fruit knives, and other similar products. However, this structure cannot meet the market's production demands for grinding and processing beauty scissors, surgical scissors, curved scissors, and irregularly shaped industrial tools. When processing these high-end products, surface roughness and wavy indentations occur, and many functional actions cannot meet production requirements, resulting in unsatisfactory performance. Therefore, to avoid the shortcomings of existing technology, it is necessary to improve it. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and provide a micro four-axis CNC multi-functional grinding machine structure with high grinding quality and good performance.

[0004] This utility model is achieved through the following technical solution:

[0005] A micro four-axis CNC multi-functional grinding machine structure includes a frame. A worktable / tool ​​post module is located on the left side of the frame, and a spindle module is located on the right side. The spindle module includes a support mounted on the right side of the frame. Two Z-axis linear guides are mounted on the top surface of the support. A Z-axis servo motor mounting base is mounted on the top surface of the support, and a Z-axis servo motor is mounted on the mounting base. The motor shaft of the Z-axis servo motor is connected to a Z-axis ball screw via a Z-axis coupling. Spindle boxes are mounted on the four sliders of the Z-axis linear guides. The bottom of the spindle box is provided with a Z-axis nut seat connected to the Z-axis ball screw. A spindle is installed inside the spindle box. A grinding wheel is mounted on one end of the spindle, and a grinding wheel is mounted on the grinding wheel via a grinding wheel pressure ring. A spindle pulley is mounted on the other end of the spindle. A main motor mounting plate is mounted on the top of the spindle box, and a three-phase asynchronous motor is mounted on the main motor mounting plate. The motor shaft of the three-phase asynchronous motor is connected to the main motor pulley, and the main motor pulley is connected to the spindle pulley via a belt. The worktable tool post module includes components mounted on the frame. The left-side X-axis base has two X-axis linear guides mounted on its side. X-axis slide plates are mounted on the sliders of these linear guides. An X-axis servo motor is mounted on the left side of the X-axis base. The motor shaft of the X-axis servo motor is connected to an X-axis ball screw via an X-axis coupling. The X-axis slide plate has an X-axis nut seat connected to the X-axis ball screw. A vertically arranged Y-axis lifting slide plate is mounted on the X-axis slide plate via a dovetail groove guide rail. An additional Y-axis lifting screw is mounted on the X-axis slide plate, and the Y-axis lifting slide plate has a connection to the additional Y-axis lifting screw. The Y-axis lifting nut seat has a handwheel connected to the additional Y-axis lifting screw. An A-axis servo motor is installed on the left side of the Y-axis lifting slide plate. The A-axis servo motor is connected to an A-axis RV reducer via an A-axis motor flange. The A-axis RV reducer is connected to a turntable seat via a reducer connecting plate. A C-axis servo motor is installed on the lower end face of the turntable seat. The C-axis servo motor is connected to a C-axis RV reducer via a C-axis motor flange. The C-axis RV reducer is connected to a C-axis shaft. A shaft panel is installed on the upper end face of the C-axis shaft. A through-type electromagnet is installed on the shaft panel.

[0006] Furthermore, a Z-axis support side plate for mounting the Z-axis ball screw is installed on the top surface of the support seat.

[0007] Furthermore, a front bearing and a front pressure cover are installed at one end of the main shaft, and a rear bearing and a rear pressure cover are installed at the other end of the main shaft.

[0008] Furthermore, the turntable base is connected to a rear-end rotating shaft, which is supported and installed by a rear-end bearing and is sealed with a rear-end pressure cap.

[0009] Furthermore, a shaft bearing is installed at the upper end of the C-axis rotating shaft, and a C-axis pressure cap is installed on the upper end face of the turntable seat, the C-axis pressure cap pressing against the outer ring end face of the shaft bearing.

[0010] Furthermore, the frame is equipped with a grinding wheel guard to protect the grinding wheel.

[0011] Furthermore, a CNC system is installed on the front side of the frame.

[0012] Furthermore, an electrical control cabinet is installed on the rear side of the frame.

[0013] Furthermore, a water tank and a water pump are installed at the rear of the frame.

[0014] Furthermore, a magnetic separator is installed at the rear of the frame.

[0015] Compared to existing technologies, this utility model features a worktable tool post module on the left side of the frame and a spindle module on the right side. Two Z-axis linear guides are mounted on the top surface of the support base. The motor shaft of the Z-axis servo motor is connected to a Z-axis ball screw via a Z-axis coupling. Spindle boxes are mounted on the four sliders of the Z-axis linear guides. A Z-axis nut seat connected to the Z-axis ball screw is located at the bottom of the spindle box. The spindle is installed inside the spindle box. A grinding wheel is mounted at one end of the spindle, with a grinding wheel mounted on it via a grinding wheel retainer. A spindle pulley is mounted at the other end of the spindle. A three-phase asynchronous motor shaft is connected to the main motor pulley, which is connected to the spindle pulley via a belt. The X-axis machine... Two X-axis linear guides are mounted on the side of the base. X-axis slide plates are mounted on the sliders of the X-axis linear guides. An X-axis servo motor is mounted on the left side of the X-axis base. The motor shaft of the X-axis servo motor is connected to an X-axis ball screw via an X-axis coupling. The X-axis slide plate has an X-axis nut seat connected to the X-axis ball screw. A vertically positioned Y-axis lifting slide plate is mounted on the X-axis slide plate via a dovetail groove guide rail. An auxiliary Y-axis lifting screw is mounted on the X-axis slide plate. The Y-axis lifting slide plate has a Y-axis lifting nut seat connected to the auxiliary Y-axis lifting screw. A handwheel is connected to the auxiliary Y-axis lifting screw. An A-axis servo motor is mounted on the left side of the Y-axis lifting slide plate. An A-axis RV reducer is connected to the A-axis servo motor via an A-axis motor flange. The V-type reducer is connected to a turntable base via a reducer connecting plate. A C-axis servo motor is mounted on the lower end face of the turntable base. The C-axis servo motor is connected to a C-axis RV reducer via a C-axis motor flange. The C-axis RV reducer is connected to a C-axis rotating shaft. A rotating shaft panel is mounted on the upper end face of the C-axis rotating shaft, and a through-type electromagnet is mounted on the rotating shaft panel. During operation, a three-phase asynchronous motor drives the spindle to rotate via a pulley, causing the grinding wheel to rotate. The Z-axis servo motor drives the spindle box to move left and right via the nut of the Z-axis ball screw, thereby achieving left and right feed of the grinding wheel. The operation of the X-axis servo motor can move the X-axis slide back and forth. Rotating the handwheel can adjust the up and down movement of the Y-axis lifting slide, allowing the workpiece on the through-type electromagnet to move in a suitable position. In the grinding wheel height positioning process, the A-axis servo motor, through the A-axis RV reducer, allows the turntable to swing up and down at different angles. The workpiece is mounted on the working side of the penetrating electromagnet via a fixture. When the penetrating electromagnet is energized, the fixture holds the workpiece firmly, controlling the C-axis servo motor to achieve left and right rotation. The operation is primarily achieved through five-axis four-linkage (X-axis, Z-axis, A-axis, C-axis, and the additional Y-axis), meeting market demands for grinding and processing cosmetic scissors, surgical scissors, curved surface scissors, and irregularly shaped industrial tools. It eliminates surface roughness and wavy indentations that occur when processing these high-end products. Many functions meet production requirements, resulting in excellent performance and the following benefits:

[0016] 1. Small in size and compact and stable in structure, it adopts a left and right transverse feed axis (Z-axis), a longitudinal forward and backward movement axis (X-axis), a swing axis (A-axis), a rotary axis (C-axis), and an additional axis (Y-axis) for lifting and moving; the overall structure is simple and durable, and the machine tool has good operating stability, which can meet the market demand for the grinding and processing of beauty scissors, surgical scissors, curved surface scissors, and special-shaped industrial tools.

[0017] 2. Small size, compact and stable structure, adopting high-precision linear guide rail, can operate stably at high speed and with high precision, improving production efficiency; solves the problem of rough surface texture and wavy dents in this type of high-end products, can meet the market demand for high-end product production, and ensures the stability of high-quality and high-efficiency production.

[0018] 3. The swing shaft (A-axis) adopts a high-precision RV reducer structure, which improves the accuracy of the swing angle, and the overall structure is simple and durable.

[0019] 4. The rotary table's C-axis adopts a high-precision RV reducer structure, which improves the accuracy and stability of the rotary table.

[0020] 5. The X and Z axes adopt a roller linear guide structure, which improves the machine tool's running accuracy and increases structural rigidity. It also improves the machine tool's running stability. Due to the reduction of sliding friction, each axis can run at a higher speed, thus improving production efficiency.

[0021] 6. The worktable adopts a through-type electromagnet, which can better clamp and fix workpieces of different sizes for processing, and is used in a turntable rotation structure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of the micro four-axis CNC multi-functional grinding machine of this utility model;

[0024] Figure 2 This is a front view of the structure of the miniature four-axis CNC multi-functional grinding machine of this utility model;

[0025] Figure 3 This is a top view of the structure of the miniature four-axis CNC multifunctional grinding machine of this utility model;

[0026] Figure 4 This is a left view of the structure of the miniature four-axis CNC multi-functional grinding machine of this utility model;

[0027] Figure 5 This is a schematic diagram of the main spindle module device of this utility model;

[0028] Figure 6 This is a left view of the spindle module device of this utility model;

[0029] Figure 7 for Figure 6 AA section view;

[0030] Figure 8 This is a schematic diagram of the worktable tool holder module device of this utility model;

[0031] Figure 9 This is a left view of the workbench tool holder module device of this utility model;

[0032] Figure 10 for Figure 9 BB section view;

[0033] Figure 11 for Figure 9 CC section view.

[0034] In the diagram: 1-Frame; 2-Spindle module; 3-Worktable tool post module; 4-Grinding wheel guard; 5-Support seat; 6-Z-axis linear guide; 7-Z-axis servo motor mounting base; 8-Z-axis ball screw; 9-Z-axis nut seat; 10-Z-axis support side plate; 11-Spindle box; 12-Z-axis servo motor; 13-Spindle; 14-Front bearing; 15-Front cover; 16-Grinding wheel disc; 17-Grinding wheel; 18-Grinding wheel pressure ring; 19-Rear bearing; 20-Rear cover; 21-Spindle pulley; 22-Main motor mounting plate; 23-Three-phase asynchronous motor; 24-Main motor pulley; 25-X-axis base; 26-X-axis linear guide; 27-X-axis slide plate; 28-X-axis nut seat; 29 - X-axis ball screw; 30- X-axis servo motor; 31- Y-axis lifting slide plate; 32- Auxiliary axis Y-axis lifting screw; 33- Y-axis lifting nut seat; 34- Handwheel; 35- A-axis servo motor; 36- A-axis motor flange; 37- A-axis RV reducer; 38- Reducer connecting plate; 39- Turntable seat; 40- Rear end shaft; 41- Rear end bearing; 42- Rear end cover; 43- C-axis shaft; 44- C-axis RV reducer; 45- C-axis motor flange; 46- C-axis servo motor; 47- Shaft bearing; 48- C-axis cover; 49- Shaft panel; 50- Penetrating type electromagnet; 51- CNC system; 52- Electrical control cabinet; 53- Water tank; 54- Magnetic separator; 55- Water pump. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figures 1 to 11The present invention discloses a micro four-axis CNC multi-functional grinding machine structure, including a frame 1. A worktable and tool post module 3 is located on the left side of the frame 1, and a spindle module 2 is located on the right side of the frame 1. The spindle module 2 includes a support 5 mounted on the right side of the frame 1. Two Z-axis linear guides 6 are mounted on the top surface of the support 5. A Z-axis servo motor mounting base 7 is mounted on the top surface of the support 5. A Z-axis servo motor 12 is mounted on the Z-axis servo motor mounting base 7. The motor shaft of the Z-axis servo motor 12 is connected to a Z-axis ball screw 8 via a Z-axis coupling. Spindle boxes 11 are mounted on the four sliders of the Z-axis linear guides 6. The bottom of the machine is provided with a Z-axis nut seat 9 connected to the Z-axis ball screw 8. The spindle 13 is installed in the spindle box 11. A grinding wheel 16 is installed at one end of the spindle 13. A grinding wheel 17 is installed on the grinding wheel 16 through a grinding wheel pressure ring 18. The other end of the spindle 13 is installed with a spindle pulley 21. The top of the spindle box 11 is installed with a main motor mounting plate 22. A three-phase asynchronous motor 23 is installed on the main motor mounting plate 22. The motor shaft of the three-phase asynchronous motor 23 is connected to the main motor pulley 24. The main motor pulley 24 is connected to the spindle pulley 21 through a belt. The worktable tool post module device 3 includes an X-axis base 2 installed on the left side of the frame 1. 5. Two X-axis linear guides 26 are mounted on the side of the X-axis base 25. X-axis slide plates 27 are mounted on the sliders of the X-axis linear guides 26. An X-axis servo motor 30 is mounted on the left side of the X-axis base 25. The motor shaft of the X-axis servo motor 30 is connected to an X-axis ball screw 29 via an X-axis coupling. The X-axis slide plate 27 is provided with an X-axis nut seat 28 connected to the X-axis ball screw 29. A vertically arranged Y-axis lifting slide plate 31 is mounted on the X-axis slide plate 27 via a dovetail groove guide rail. An auxiliary Y-axis lifting screw 32 is mounted on the X-axis slide plate 27. The Y-axis lifting slide plate 31 is provided with a Y-axis lifting nut seat 3 connected to the auxiliary Y-axis lifting screw 32. 3. The auxiliary axis Y-axis lifting screw 32 is connected to a handwheel. An A-axis servo motor 35 is installed on the left side of the Y-axis lifting slide plate 31. The A-axis servo motor 35 is connected to an A-axis RV reducer 37 through an A-axis motor flange 36. The A-axis RV reducer 37 is connected to a turntable seat 39 through a reducer connecting plate 38. A C-axis servo motor 46 is installed on the lower end face of the turntable seat 39. The C-axis servo motor 46 is connected to a C-axis RV reducer 44 through a C-axis motor flange 45. The C-axis RV reducer 44 is connected to a C-axis rotating shaft 43. A rotating shaft panel 49 is installed on the upper end face of the C-axis rotating shaft 43. A through-type electromagnet 50 is installed on the rotating shaft panel 49. A worktable tool post module 3 is located on the left side of the frame 1, and a spindle module 2 is located on the right side of the frame 1. Two Z-axis linear guides 6 are mounted on the top surface of the support base 5. The motor shaft of the Z-axis servo motor 12 is connected to the Z-axis ball screw 8 via a Z-axis coupling. Spindle boxes 11 are mounted on the four sliders of the Z-axis linear guides 6. A Z-axis nut seat 9 connected to the Z-axis ball screw 8 is located at the bottom of the spindle box 11. A spindle 13 is installed inside the spindle box 11, and a grinding wheel 16 is mounted on one end of the spindle 13.A grinding wheel 17 is mounted on the grinding wheel disc 16 via a grinding wheel pressure ring 18. A main shaft pulley 21 is mounted on the other end of the main shaft 13. The motor shaft of the three-phase asynchronous motor 23 is connected to the main motor pulley 24, which is connected to the main shaft pulley 21 via a belt. Two X-axis linear guides 26 are mounted on the side of the X-axis base 25. An X-axis slide plate 27 is mounted on the slider of the X-axis linear guide 26. An X-axis servo motor 30 is mounted on the left side of the X-axis base 25. The motor shaft of the X-axis servo motor 30 is connected to an X-axis ball screw 29 via an X-axis coupling. The X-axis slide plate 27 is provided with an X-axis nut seat 28 connected to the X-axis ball screw 29. The X-axis slide plate 27 is connected to the dovetail groove. A vertically mounted Y-axis lifting slide plate 31 is installed on the guide rail. An auxiliary Y-axis lifting screw 32 is installed on the X-axis slide plate 27. The Y-axis lifting slide plate 31 is provided with a Y-axis lifting nut seat 33 connected to the auxiliary Y-axis lifting screw 32. A handwheel 34 is connected to the auxiliary Y-axis lifting screw 32. An A-axis servo motor 35 is installed on the left side of the Y-axis lifting slide plate 31. The A-axis servo motor 35 is connected to an A-axis RV reducer 37 through an A-axis motor flange 36. The A-axis RV reducer 37 is connected to a turntable seat 39 through a reducer connecting plate 38. A C-axis servo motor 46 is installed on the lower end face of the turntable seat 39. The C-axis servo motor 46 is connected to the C-axis RV reducer 44 through a C-axis motor flange 45. The RV reducer 44 is connected to the C-axis shaft 43. A shaft panel 49 is mounted on the upper surface of the C-axis shaft 43, and a through-type electromagnet 50 is mounted on the shaft panel 49. During operation, the three-phase asynchronous motor 23 drives the spindle 13 to rotate via a pulley, causing the grinding wheel 17 to rotate. The Z-axis servo motor 12 drives the spindle box 11 to move left and right via the nut of the Z-axis ball screw 8, thus achieving left and right feed of the grinding wheel 17. The X-axis servo motor 30 can move the X-axis slide plate 27 back and forth. Rotating the handwheel 34 can adjust the Y-axis lifting slide plate 31 to move up and down, allowing the workpiece on the through-type electromagnet 50 to be processed at a suitable height for the grinding wheel 17. The A-axis servo motor 35... During rotation, the A-axis RV reducer 37 allows the turntable seat 39 to swing up and down at different angles. The workpiece is mounted on the working side of the penetrating electromagnet 50 via a fixture. When the penetrating electromagnet 50 is energized, the fixture holds the workpiece firmly, controlling the C-axis servo motor 46 to achieve left and right rotation. The operation is primarily achieved through five-axis four-linkage (X-axis, Z-axis, A-axis, C-axis, and auxiliary Y-axis), meeting market demands for grinding and processing of beauty scissors, surgical scissors, curved surface scissors, and irregularly shaped industrial tools. It eliminates surface roughness and wavy indentations that occur when processing these high-end products. Many functions meet production requirements, resulting in good performance and the following beneficial effects:

[0037] 1. Small in size and compact and stable in structure, it adopts a left and right transverse feed axis (Z-axis), a longitudinal forward and backward movement axis (X-axis), a swing axis (A-axis), a rotary axis (C-axis), and an additional axis (Y-axis) for lifting and moving; the overall structure is simple and durable, and the machine tool has good operating stability, which can meet the market demand for the grinding and processing of beauty scissors, surgical scissors, curved surface scissors, and special-shaped industrial tools.

[0038] 2. Small size, compact and stable structure, adopting high-precision linear guide rail, can operate stably at high speed and with high precision, improving production efficiency; solves the problem of rough surface texture and wavy dents in this type of high-end products, can meet the market demand for high-end product production, and ensures the stability of high-quality and high-efficiency production.

[0039] 3. The swing shaft (A-axis) adopts a high-precision RV reducer structure, which improves the accuracy of the swing angle, and the overall structure is simple and durable.

[0040] 4. The rotary table's C-axis adopts a high-precision RV reducer structure, which improves the accuracy and stability of the rotary table.

[0041] 5. The X and Z axes adopt a roller linear guide structure, which improves the machine tool's running accuracy and increases structural rigidity. It also improves the machine tool's running stability. Due to the reduction of sliding friction, each axis can run at a higher speed, thus improving production efficiency.

[0042] 6. The worktable adopts a through-type electromagnet, which can better clamp and fix workpieces of different sizes for processing, and is used in a turntable rotation structure.

[0043] The top surface of the support base 5 is equipped with a Z-axis support side plate 10 for mounting the Z-axis ball screw 8, which facilitates the stable installation of the Z-axis ball screw 8.

[0044] A front bearing 14 and a front cover 15 are installed at one end of the spindle 13, and a rear bearing 19 and a rear cover 20 are installed at the other end of the spindle 13, which improves the stability and sealing of the spindle 13 and makes the spindle 13 rotate more smoothly.

[0045] The turntable base 39 is connected to the rear shaft 40, which is supported and installed by the rear bearing 41 and sealed with the rear cover 42. The turntable base 39 is more stable, more waterproof, and rotates more smoothly.

[0046] The upper end of the C-axis shaft 43 is equipped with a shaft bearing 47, and the upper end face of the turntable seat 39 is equipped with a C-axis pressure cover 48. The C-axis pressure cover 48 presses against the outer ring end face of the shaft bearing 47, making the C-axis shaft 43 more stable, more waterproof, and smoother to rotate.

[0047] The frame 1 is equipped with a grinding wheel guard 4 to protect the grinding wheel 17, thereby improving the safety of the grinding wheel 17 during operation.

[0048] A CNC system 51 is installed on the front side of the frame 1 to facilitate CNC control of the grinding machine.

[0049] The electrical control cabinet 52 is installed on the rear side of the frame 1 to facilitate the power supply connection of the grinding machine.

[0050] A water tank 53 and a water pump 55 are installed at the rear of the frame 1. The water pump 55 is used for cooling to prevent the workpiece from overheating and deforming, as well as dust pollution.

[0051] A magnetic separator 54 is installed at the rear of the frame 1. The iron filings can be separated and recycled by draining water through the magnetic separator 53.

[0052] The grinding machine adopts a dedicated four-axis CNC grinding system, which can be programmed manually, or automatically generated by directly inputting simple parameters. It can also read DXF graphics to generate machining programs, achieving user-friendly operation. Moreover, the ground surfaces of the processed products are more uniform, smooth, and standardized.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for a miniature four-axis CNC multi-functional grinding machine, characterized in that: The system includes a frame, with a worktable / tool ​​post module on the left side and a spindle module on the right side. The spindle module includes a support mounted on the right side of the frame, two Z-axis linear guides mounted on the top surface of the support, a Z-axis servo motor mounting base mounted on the top surface of the support, a Z-axis servo motor mounted on the mounting base, and a Z-axis ball screw connected to the motor shaft of the Z-axis servo motor via a Z-axis coupling. Spindle housings are mounted on the four sliders of the Z-axis linear guides, and the bottom of the spindle housings has a... The Z-axis ball screw is connected to a Z-axis nut seat. A spindle is installed inside the spindle box. A grinding wheel is mounted at one end of the spindle, and a grinding wheel is mounted on the grinding wheel via a grinding wheel pressure ring. A spindle pulley is mounted at the other end of the spindle. A main motor mounting plate is mounted on the top of the spindle box. A three-phase asynchronous motor is mounted on the main motor mounting plate. The motor shaft of the three-phase asynchronous motor is connected to the main motor pulley, which is connected to the spindle pulley via a belt. The worktable tool post module includes an X-axis base mounted on the left side of the frame. Two X-axis linear guides are mounted on the side of the X-axis base. X-axis sliding plates are mounted on the sliders of the X-axis linear guides. An X-axis servo motor is mounted on the left side of the X-axis base. The motor shaft of the X-axis servo motor is connected to an X-axis ball screw via an X-axis coupling. The X-axis sliding plate has an X-axis nut seat connected to the X-axis ball screw. A vertically arranged Y-axis lifting sliding plate is mounted on the X-axis sliding plate via a dovetail groove guide rail. An additional Y-axis lifting screw is mounted on the X-axis sliding plate. The Y-axis lifting sliding plate has a Y-axis lifting mechanism connected to the additional Y-axis lifting screw. The nut seat, the additional axis Y-axis lifting screw is connected to a handwheel, the left side of the Y-axis lifting slide plate is equipped with an A-axis servo motor, the A-axis servo motor is connected to an A-axis RV reducer through an A-axis motor flange, the A-axis RV reducer is connected to a turntable seat through a reducer connecting plate, the lower end face of the turntable seat is equipped with a C-axis servo motor, the C-axis servo motor is connected to a C-axis RV reducer through a C-axis motor flange, the C-axis RV reducer is connected to a C-axis shaft, the upper end face of the C-axis shaft is equipped with a shaft panel, and the shaft panel is equipped with a through-type electromagnet.

2. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: The top surface of the support is equipped with a Z-axis support side plate for mounting the Z-axis ball screw.

3. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: One end of the spindle is equipped with a front bearing and a front pressure cover, and the other end of the spindle is equipped with a rear bearing and a rear pressure cover.

4. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: The turntable base is connected to a rear-end rotating shaft, which is supported and installed by a rear-end bearing and is sealed with a rear-end pressure cap.

5. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: A shaft bearing is installed at the upper end of the C-axis rotating shaft, and a C-axis pressure cap is installed on the upper end face of the turntable seat. The C-axis pressure cap presses against the outer ring end face of the shaft bearing.

6. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: The frame is equipped with a grinding wheel guard to protect the grinding wheel.

7. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: A numerical control system is installed on the front side of the frame.

8. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: The electrical control cabinet is installed on the rear side of the frame.

9. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: A water tank and a water pump are installed at the rear of the frame.

10. The structure of the miniature four-axis CNC multi-functional grinding machine according to claim 1, characterized in that: A magnetic separator is installed at the rear of the frame.

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