Numerical control engraving and milling machine with quick change of clamps

Abstract

The utility model relates to quick replacement clamp engraving and milling equipment technical field discloses a quick replacement clamp numerical control engraving and milling machine, including host computer, the outer wall top of host computer is provided with filtering mechanism, the inner wall top left and right sides of host computer are provided with buffer mechanism, the buffer mechanism is used for damping effect, the front and back sides of host computer are provided with replacement subassembly, the filtering mechanism includes filter plate, the outer wall sliding connection of filter plate is in the outer wall top of host computer, the top front and back sides of filter plate all are fixedly connected with two clamping blocks, the inner wall sliding connection of filter plate has conical table, the bottom of filter plate is provided with guide block. In the utility model, through filter plate and conical table sliding fit, cooperation clamping block realizes quick assembly and disassembly, and motor drive rotating shaft drives turbine cutter edge, effectively solve the problem that the existing technology is not thorough, the consumption of cooling water recovery is big, reduces the production water cost.

Description

Technical Field

[0001] This utility model relates to the technical field of quick-change fixture engraving and milling equipment, and in particular to a CNC engraving and milling machine with quick-change fixtures. Background Technology

[0002] CNC engraving and milling machines are high-precision automated processing equipment that integrates engraving and milling functions. They are widely used in mold manufacturing, 3C electronics, and aerospace. Their core function is to drive the relative movement of the tool and the workpiece through a CNC system to achieve precision machining of complex contours. Among them, CNC engraving and milling machines with quick fixture changes are key equipment for flexible manufacturing. They can quickly switch between different fixtures to adapt to the processing needs of multi-variety, small-batch workpieces, significantly shortening production preparation time and improving the overall utilization rate of equipment. They are an important foundation for achieving efficient production in modern intelligent manufacturing.

[0003] Early CNC engraving and milling machine fixtures mostly adopted a fixed structure, typically consisting of a base, clamping device, and positioning pins, rigidly connected to the worktable by bolts. While this structure ensured machining stability, it suffered from excessively long fixture replacement times. Replacing a single fixture required disassembling dozens of bolts and recalibrating the positioning, with single-batch changeover times often exceeding 30 minutes. This was insufficient to meet the demands of flexible production for rapid workpiece switching, and frequent manual operations introduced positioning errors, affecting machining accuracy. To address these issues, existing quick-change fixture systems often employ modular designs, using zero-point positioning mechanisms and pneumatic / hydraulic quick-change interfaces to achieve rapid fixture loading and unloading. The zero-point positioning mechanism utilizes the precise fit between a tapered positioning pin and a locking sleeve. The equipment also integrates guide positioning components, reducing manual alignment steps through the synergistic action of pre-positioning slots and elastic jaws. However, existing equipment... There are still significant flaws in the design of the cooling system. To prevent deformation of the cutting tool and workpiece due to high temperatures during machining, the CNC engraving machine needs to continuously spray cooling water for cooling and lubrication. Early equipment directly discharged the cooling water into the waste liquid tank. Although existing equipment has added a simple recycling tank, the interface between the quick-change fixture and the worktable adopts a clearance fit and non-sealed design to meet the needs of rapid loading and unloading. This results in a large amount of cooling water leaking from the interface gaps during fixture changes and failing to enter the recycling system. At the same time, existing recycling devices are mostly single-screen structures, which are difficult to filter metal chips and cutting fluid impurities in the cooling water. The cleanliness of the recycled cooling water is insufficient and cannot be directly recycled. Ultimately, new cooling water still needs to be continuously added, resulting in a double waste of water resources and cutting fluid. Especially in batch processing scenarios, the daily cooling water consumption can reach hundreds of liters, significantly increasing production and operating costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a CNC engraving and milling machine with quick fixture change, which aims to improve the problem in the prior art that a large amount of cooling water cannot be effectively recycled and reused, resulting in a large amount of cooling water required for operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a CNC engraving and milling machine with quick fixture change, comprising a main unit, a filter mechanism provided on the top of the outer wall of the main unit, a buffer mechanism provided on the left and right sides of the top of the inner wall of the main unit, the buffer mechanism being used for shock absorption, and replacement components provided on the front and rear sides of the main unit.

[0006] The filtration mechanism includes a filter plate, the outer wall of which is slidably connected to the top of the outer wall of the main unit. Two locking blocks are fixedly connected to the front and rear sides of the top of the filter plate. A conical platform is slidably connected to the inner wall of the filter plate. A guide block is provided at the bottom of the filter plate. A collection block is fixedly connected to the bottom of the guide block. A motor is provided at the rear end of the collection block. A rotating shaft is fixedly connected to the output end of the motor. A turbine blade is fixedly connected to the front end of the rotating shaft. A collection component is provided at the front end of the collection block.

[0007] As a further description of the above technical solution:

[0008] The buffer mechanism includes two telescopic rods. The tops of the two telescopic rods are fixedly connected to the top left and right sides of the inner wall of the host respectively. Springs are provided on the outer walls of the two telescopic rods. Rubber pads are fixedly connected to the bottom ends of the two telescopic rods. Balance blocks are fixedly connected to adjacent sides of the two rubber pads. Stabilizing blocks are fixedly connected to adjacent sides of the two balance blocks.

[0009] As a further description of the above technical solution:

[0010] The collection component includes a collection box, the rear end of the inner wall of the collection box is connected to the front end of the collection block, the top of the collection box is provided with an observation window, and the left and right sides of the inner wall of the observation window are provided with sliding grooves. The inner wall of the sliding groove is slidably connected to a storage box, and the front end of the storage box is fixedly connected to a handle.

[0011] As a further description of the above technical solution:

[0012] The main unit is fixedly connected to the top left and right sides of the outer wall, and baffles are fixedly connected to the front and rear sides of the two gantry frames.

[0013] As a further description of the above technical solution:

[0014] The bottom of the host is fixedly connected to a chassis, and the bottom of the chassis is fixedly connected to a suction cup.

[0015] As a further description of the above technical solution:

[0016] The replacement component includes two fixed blocks, each with a slider fixedly connected to its top. Slide rails are slidably connected to the left and right sides of the inner walls of the two sliders. Telescopic rods are slidably connected to the inner walls of the two sliders on opposite sides. Clamping plates are fixedly connected to the adjacent sides of the two telescopic rods.

[0017] As a further description of the above technical solution:

[0018] A toolbox is fixedly connected to the left side of the host, and a control console is fixedly connected to the right side of the host. Multiple electronic screens are set on the right side of the control console.

[0019] As a further description of the above technical solution:

[0020] A grinding wheel is slidably connected to the outer wall of the gantry frame, and a flywheel is fixedly connected to the top of the inner wall of the grinding wheel.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the filter mechanism uses a filter plate and a conical platform to slide together and cooperate with a locking block to achieve quick loading and unloading, which facilitates the cleaning of large debris and avoids clogging. The guide block and the collection block work together to gather the dispersed water flow and reduce leakage. The motor drives the rotating shaft to drive the turbine blade. The collection component realizes the sealed storage and convenient access of cooling water, effectively solving the problems of incomplete cooling water recovery and high consumption in the prior art, and reducing the cost of production water.

[0023] 2. In this utility model, the buffer mechanism can convert the vibration impact force into the elastic potential energy of the spring through the coordinated cooperation of the telescopic rod and the spring. The rubber pad is set to fit the spring, which can constrain the deformation direction of the spring. The balance block bears the residual impact force and further attenuates the vibration energy through its own inertia. The stabilizing block prevents derailment and offset. This solves the problem of decreased processing accuracy and damage to equipment parts caused by vibration in the prior art, and extends the service life of the equipment. Attached Figure Description

[0024] Figure 1 This is a perspective view of a CNC engraving and milling machine with quick fixture change proposed in this utility model;

[0025] Figure 2 This is a front view of a CNC engraving and milling machine with quick fixture change proposed in this utility model;

[0026] Figure 3 This is a rear view of a CNC engraving and milling machine with quick fixture change proposed in this utility model;

[0027] Figure 4This is a structural exploded view of the filter mechanism of a CNC engraving and milling machine with quick fixture change proposed in this utility model;

[0028] Figure 5 This is a structural exploded view of the collection component of a CNC engraving and milling machine with quick fixture change proposed in this utility model;

[0029] Figure 6 This is a schematic diagram of the buffer mechanism of a CNC engraving and milling machine with quick fixture change proposed in this utility model.

[0030] Legend:

[0031] 1. Main unit; 2. Filtration mechanism; 201. Filter plate; 202. Clamping block; 203. Conical platform; 204. Guide block; 205. Collection block; 206. Motor; 207. Rotating shaft; 208. Turbine blade; 209. Collection assembly; 2091. Collection box; 2092. Observation window; 2093. Slide rail; 2094. Storage box; 2095. Handle; 3. Buffer mechanism; 301. Telescopic rod one; 302. Spring; 303. Rubber pad; 304. Balance block; 305. Stabilizing block; 4. Gantry frame; 5. Baffle; 6. Chassis; 7. Suction cup; 8. Replacement assembly; 801. Fixing block; 802. Slider; 803. Slide rail; 804. Telescopic rod two; 805. Clamping plate; 9. Toolbox; 10. Control console; 11. Electronic screen; 12. Grinding wheel; 13. Flywheel. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0033] Reference Figure 1 , Figure 4 and Figure 5 The present invention provides an embodiment of a CNC engraving and milling machine with quick fixture change, comprising a main unit 1, which serves as the mounting base for the equipment and supports various functional components. A filter mechanism 2 is provided on the top of the outer wall of the main unit 1, which is used to filter the cooling water containing debris generated during processing. A buffer mechanism 3 is provided on the left and right sides of the top of the inner wall of the main unit 1, which is used to dampen vibrations when the equipment is running. The buffer mechanism 3 is used to dampen vibrations. Replacement components 8 are provided on the front and rear sides of the main unit 1, which are used to realize quick fixture change operation.

[0034] The filtration mechanism 2 includes a filter plate 201. The outer wall of the filter plate 201 is slidably connected to the top of the outer wall of the main unit 1. The filter plate 201 can slide along the outer wall of the main unit 1 for easy disassembly and cleaning. It is used for preliminary filtration of large debris in the cooling water. Two locking blocks 202 are fixedly connected to the front and rear sides of the top of the filter plate 201. The locking blocks 202 are used to stably lock the filter plate 201 onto the main unit 1 to prevent the filter plate 201 from shifting during operation. A conical platform 203 is slidably connected to the inner wall of the filter plate 201. The conical platform 203 can slide on the inner wall of the filter plate 201. Its conical structure facilitates the convergence of cooling water to the edge of the filter plate 201 for filtration operation. A guide block 204 is provided at the bottom of the filter plate 201. 04 is used to guide the cooling water filtered by the filter plate 201 to the collection block 205 to prevent water flow dispersion and leakage. The bottom of the guide block 204 is fixedly connected to the collection block 205, which is used to temporarily store the cooling water collected by the guide block 204 and provide a channel for subsequent delivery to the collection assembly 209. The rear end of the collection block 205 is equipped with a motor 206, which serves as a power source to drive the rotating shaft 207 to rotate. The output end of the motor 206 is fixedly connected to the rotating shaft 207, which transmits the power of the motor 206 to the turbine blade 208, causing it to rotate. The front end of the rotating shaft 207 is fixedly connected to the turbine blade 208, which rotates... A negative pressure is generated, accelerating the flow of cooling water to the collection component 209 and simultaneously breaking up fine debris. The collection component 209 is located at the front end of the collection block 205. The collection component 209 collects and stores the filtered cooling water for recycling. The collection component 209 includes a collection tank 2091, which serves as the outer shell of the collection component 209, protecting the internal storage tank 2094 and providing installation space. The rear end of the inner wall of the collection tank 2091 connects to the front end of the collection block 205. This connection allows the cooling water in the collection block 205 to flow smoothly into the storage tank 2094 within the collection tank 2091. An observation window 2092 is located on the top of the collection tank 2091 for observation. The window 2092 allows operators to observe the water level in the storage tank 2094 for timely recycling. The inner walls of the observation window 2092 are provided with sliding grooves 2093 on both the left and right sides. These grooves guide the sliding of the storage tank 2094, facilitating its removal and insertion. The storage tank 2094 is slidably connected to the inner wall of the groove 2093. The storage tank 2094 stores filtered cooling water, and its sliding connection structure allows for quick removal and reuse. A handle 2095 is fixedly connected to the front end of the storage tank 2094, allowing operators to easily grip and pull the storage tank 2094 along the groove 2093 for convenient removal or insertion.

[0035] Specifically, the main unit 1 carries the filter mechanism 2. The filter plate 201 is slidably connected to the top of the outer wall of the main unit 1. The locking block 202 on the top of the filter plate 201 stably locks the filter plate 201 in place. The filter plate 201 cooperates with the conical platform 203 sliding on the inner wall. The conical structure of the conical platform 203 causes the cooling water to converge towards the edge of the filter plate 201, and the filter plate 201 initially filters large debris. The guide block 204 at the bottom of the filter plate 201 guides the filtered cooling water to the collection block 205 fixed at the bottom to prevent water flow dispersion and leakage. The motor 206 at the rear end of the collection block 205 drives the rotating shaft 207 fixed at the output end. The rotating shaft 207 drives the front end fixed The turbine blade 208 rotates, generating negative pressure to accelerate the flow of cooling water and break up small debris, allowing water to enter the collection component 209 at the front end of the collection block 205. The rear end of the inner wall of the collection tank 2091 of the collection component 209 is connected to the front end of the collection block 205, allowing cooling water to flow into the internal storage tank 2094. The observation window 2092 on the top of the collection tank 2091 facilitates observation of the water level in the storage tank 2094. The sliding groove 2093 on the inner wall of the observation window 2092 provides guidance for the sliding of the storage tank 2094. The handle 2095 at the front end of the storage tank 2094 facilitates its removal or insertion along the sliding groove 2093.

[0036] Reference Figure 1 , Figure 2 and Figure 6The buffer mechanism 3 includes two telescopic rods 301, which can extend and retract axially to absorb vibration and impact forces. The tops of the two telescopic rods 301 are fixedly connected to the top left and right sides of the inner wall of the main unit 1, respectively. This fixing method provides stable support for the telescopic rods 301. Springs 302 are provided on the outer walls of both telescopic rods 301. The springs 302 further buffer the impact force through elastic deformation. Rubber pads 303 are fixedly connected to the bottom ends of both telescopic rods 301. The rubber pads 303 can prevent wear caused by direct contact between the springs 302 and the bottom ends of the telescopic rods 301, and at the same time prevent the springs 302 from twisting and deforming. Balance blocks 304 are fixedly connected to adjacent sides of the two rubber pads 303. The balance blocks 304 disperse the remaining impact force through their own mass inertia, enhancing the buffering effect. Stabilizing blocks 304 are fixedly connected to adjacent sides of the two balance blocks 304. 5. The stabilizing block 305 is used to limit the lateral displacement of the buffer mechanism 3 to prevent it from derailing. The replacement component 8 includes two fixed blocks 801, which serve as the mounting base for the replacement component 8 and support the slider 802. The top of each of the two fixed blocks 801 is fixedly connected to the slider 802, which can slide along the slide rail 803 to adjust its position. The inner walls of the two sliders 802 are slidably connected to the slide rail 803 on both sides, which provides guidance for the sliding of the sliders 802 and ensures smooth movement. The inner walls of the two sliders 802 on opposite sides are slidably connected to the telescopic rods 804, which can extend and retract to move the clamping plates 805. The adjacent sides of the two telescopic rods 804 are fixedly connected to the clamping plates 805. The clamping plates 805 clamp and release the fixture by moving closer or further apart, thereby completing the quick replacement of the fixture.

[0037] Specifically, in the buffer mechanism 3, two telescopic rods 301 are fixed to the top of the inner wall of the main unit 1 to provide stable support. They extend and retract axially to absorb the impact force of vibration. The spring 302 on the outer wall further buffers the impact force through elastic deformation. The rubber pad 303 at the bottom of the telescopic rod 301 prevents the spring 302 from wearing with the bottom of the telescopic rod 301 and prevents the spring 302 from twisting and deforming. The balance block 304 on the adjacent side of the rubber pad 303 disperses the remaining impact force through mass inertia to enhance the buffering effect. The stabilizing block 305 on the adjacent side of the balance block 304 restricts the lateral displacement of the buffer mechanism 3 to prevent derailment. All components work together to achieve the shock absorption function. In the replacement component 8, two fixed blocks 801 support the slider 802 as the installation base. The slider 802 slides along the slide rail 803 to adjust its position. The slide rail 803 provides guidance for the slider 802 to slide smoothly. The telescopic rod 804 on the side away from the slider 802 extends and retracts to drive the clamping plate 805 to move. The clamping plates 805 clamp and release the fixture by moving closer or further away from each other.

[0038] Reference Figure 1 , Figure 2 and Figure 3The main unit 1 has gantry frames 4 fixedly connected to the top left and right sides of its outer wall. These gantry frames 4 are fixedly installed on the main unit 1, providing mounting support and a moving track for the grinding wheel 12's processing components, ensuring stable operation of the processing components within a specified range. Baffles 5 are fixedly connected to the front and rear sides of both gantry frames 4 to prevent debris and coolant generated during processing from splashing out of the equipment, providing protection and preventing injury to operators and environmental pollution. A chassis 6 is fixedly connected to the bottom of the main unit 1, increasing the contact area between the equipment and the support surface, enhancing the overall stability of the main unit 1. A suction cup 7 is fixedly connected to the bottom of the chassis 6, adhering to the ground or workbench through negative pressure, further preventing displacement or shaking of the equipment during operation. A toolbox 9 is fixedly connected to the left side of the main unit 1, used to store cutting tools, wrenches, and other tools required for processing. Spare parts are readily available for operators to use. A control console 10 is fixedly connected to the right side of the main unit 1. The control console 10 integrates the equipment's control knobs, buttons, and data interface, which are used by operators to set processing parameters, start and stop the equipment, and troubleshoot. Multiple electronic screens 11 are set on the right side of the control console 10. The electronic screens 11 are used to display key data such as processing trajectory, spindle speed, feed rate, and equipment operating status in real time, which allows operators to intuitively monitor the processing process. A grinding wheel 12 is slidably connected to the outer wall of the gantry frame 4. The grinding wheel 12 can slide and adjust its position along the outer wall of the gantry frame 4. It grinds and engraves the workpiece surface through high-speed rotation to achieve the forming process of the workpiece. A flywheel 13 is fixedly connected to the top of the inner wall of the grinding wheel 12. The flywheel 13 uses inertia to store rotational kinetic energy, which can reduce the speed fluctuation of the grinding wheel 12 when the load changes, and ensure the stability and processing accuracy of the processing process.

[0039] Specifically, the base 6 fixed at the bottom of the main unit 1 increases the contact area with the supporting surface, and the suction cup 7 at the bottom of the base 6 uses negative pressure to adsorb, and the two work together to enhance the overall stability of the main unit 1 and prevent displacement or shaking during operation; the toolbox 9 on the left side of the main unit 1 stores the tools and spare parts required for processing, making it convenient for operators to access and meet the needs of tool replacement during processing; the control console 10 on the right side of the main unit 1 integrates control knobs, buttons and data interfaces, allowing operators to set processing parameters, start and stop the equipment and troubleshoot; multiple electronic screens 11 on the right side of the control console 10 display the processing trajectory, key data of spindle speed and operating status in real time, and the two work together to allow operators to intuitively monitor and control the processing process; the grinding wheel 12 sliding on the outer wall of the gantry 4 adjusts its position along the gantry 4, and grinds and carves the workpiece to achieve shaping through high-speed rotation; the flywheel 13 on the top of the inner wall of the grinding wheel 12 uses inertia to store rotational kinetic energy, reducing the speed fluctuation of the grinding wheel 12 when the load changes, and the two work together to ensure the stability and accuracy of the processing process.

[0040] Working principle: When the conical stage 203 generates cooling water containing debris during processing, the filter plate 201 can directly block the large metal debris generated during processing. Since the filter plate 201 is fixed to the main unit 1 by the two side clamping blocks 202, the operator can quickly disassemble and remove the filter plate 201 for cleaning. The cooling water that has been initially filtered flows to the guide block 204 under the action of gravity and enters the collection block 205. The motor 206 starts and drives the rotating shaft 207 to rotate, which drives the turbine blade 208 to rotate at high speed. Under the guidance of the turbine blade 208, the cooling water finally enters the storage tank 2094 inside the collection box 2091. When the water volume in the storage tank 2094 reaches the threshold, the operator can pull the handle 2095 to pull it out of the collection box 2091 and directly transfer it to the water inlet of the engraving and milling machine cooling system to achieve recycling, which significantly reduces the amount of new cooling water to be added.

[0041] Furthermore, when the equipment generates vibration and impact force due to processing load or external disturbance, the impact force first acts on the telescopic rod 301, and the impact force is introduced into the spring 302 to prevent the spring 302 from lateral twisting in high-frequency vibration. The rubber pad 303 bears the compression deformation of the spring 302, and the balance block 304 forms a reverse damping force through mass inertia, which solves the accuracy and safety hazards caused by the single buffer structure and weak anti-torsion ability of traditional buffer structures.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 CNC engraving and milling machine with quick fixture change, comprising a main unit (1), characterized in that: A filter mechanism (2) is provided on the top of the outer wall of the host (1), and a buffer mechanism (3) is provided on the top left and right sides of the inner wall of the host (1). The buffer mechanism (3) is used for shock absorption. Replacement components (8) are provided on the front and rear sides of the host (1). The filtration mechanism (2) includes a filter plate (201). The outer wall of the filter plate (201) is slidably connected to the top of the outer wall of the host (1). Two locking blocks (202) are fixedly connected to the front and rear sides of the top of the filter plate (201). A conical platform (203) is slidably connected to the inner wall of the filter plate (201). A guide block (204) is provided at the bottom of the filter plate (201). A collection block (205) is fixedly connected to the bottom of the guide block (204). A motor (206) is provided at the rear end of the collection block (205). A rotating shaft (207) is fixedly connected to the output end of the motor (206). A turbine blade (208) is fixedly connected to the front end of the rotating shaft (207). A collection component (209) is provided at the front end of the collection block (205).

2. The CNC engraving and milling machine with quick fixture change according to claim 1, characterized in that: The buffer mechanism (3) includes two telescopic rods (301). The tops of the two telescopic rods (301) are fixedly connected to the top left and right sides of the inner wall of the host (1). The outer walls of the two telescopic rods (301) are provided with springs (302). The bottom ends of the two telescopic rods (301) are fixedly connected with rubber pads (303). The adjacent sides of the two rubber pads (303) are fixedly connected with balance blocks (304). The adjacent sides of the two balance blocks (304) are fixedly connected with stabilizing blocks (305).

3. A CNC engraving and milling machine with quick fixture change according to claim 1, characterized in that: The collection component (209) includes a collection box (2091), the rear end of the inner wall of the collection box (2091) is connected to the front end of the collection block (205), the top of the collection box (2091) is provided with an observation window (2092), the inner wall of the observation window (2092) is provided with a sliding groove (2093) on both the left and right sides, the inner wall of the sliding groove (2093) is slidably connected to a storage box (2094), and the front end of the storage box (2094) is fixedly connected with a handle (2095).

4. A CNC engraving and milling machine with quick fixture change according to claim 1, characterized in that: The main unit (1) is fixedly connected to the top left and right sides of the outer wall of the main unit (1), and the front and rear sides of the two gantry frames (4) are fixedly connected to the baffles (5).

5. A CNC engraving and milling machine with quick fixture change according to claim 1, characterized in that: The bottom of the host (1) is fixedly connected to a chassis (6), and the bottom of the chassis (6) is fixedly connected to a suction cup (7).

6. A CNC engraving and milling machine with quick fixture change according to claim 3, characterized in that: The replacement component (8) includes two fixing blocks (801), each of which is fixedly connected to a slider (802) at its top. Each of the two sliders (802) is slidably connected to a slide rail (803) on its left and right sides. Each of the two sliders (802) is slidably connected to a telescopic rod (804) on its opposite inner wall. Each of the two telescopic rods (804) is fixedly connected to a clamping plate (805) on its adjacent side.

7. A CNC engraving and milling machine with quick fixture change according to claim 1, characterized in that: A toolbox (9) is fixedly connected to the left side of the host (1), and a console (10) is fixedly connected to the right side of the host (1). Multiple electronic screens (11) are provided on the right side of the console (10).

8. A CNC engraving and milling machine with quick fixture change according to claim 4, characterized in that: A grinding wheel (12) is slidably connected to the outer wall of the gantry frame (4), and a flywheel (13) is fixedly connected to the top of the inner wall of the grinding wheel (12).

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