Vertical CNC machine tool based on intelligent control system and high-precision machining method thereof

Abstract

The present invention relates to the technical field of numerical control machine tools, and more specifically, to a vertical numerical control machine tool based on an intelligent control system and a high-precision processing method thereof. The vertical numerical control machine tool comprises a workbench, a vertical tool holder and a rotary table. A protective plate is provided around the rotary table. A rotating mechanism rotates synchronously in the workbench at the bottom of the rotary table. A liquid collecting box and a material collecting box are fixedly provided in the workbench at the bottom of the rotary table. The liquid collecting box and the material collecting box are spliced ​​into a circular box body. A material removal rod is used to guide the debris on the filter screen into the material collecting box for storage, so that the cutting fluid is separated from the debris. A partition is used to isolate the evaporated oil and gas in the material collecting box from the external environment. The partition is then used to move up to draw the evaporated oil and gas in the material collecting box into a return pipe. The oil and gas are liquefied into cutting fluid through a cold delivery pipe. This not only realizes the recycling of the cutting fluid, but also can use the coldness of the liquefied cutting fluid itself to cool the cutting fluid in the narrow opening, thereby reducing the evaporation of cutting in the narrow opening.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control machine tools, in particular to a vertical numerical control machine tool based on an intelligent control system and a high-precision machining method thereof. Background Art

[0002] Cutting fluid usually contains multiple components. Its main purpose is to improve the efficiency and quality of cutting processing through lubrication, cooling and cleaning. Machine tool cutting fluid mist is a common phenomenon in the metal cutting process, which can be mainly attributed to two mechanisms: atomization and evaporation.

[0003] At present, in order to prevent oil and gas from spreading to the outside world and polluting the environment, cutting fluid mist treatment equipment is needed. In Chinese Patent Publication No.: CN117942676A, a machine tool cutting fluid mist separation and filtration equipment is proposed, which includes a filter cartridge, a diverter cartridge, a telescopic tube, an anti-pull-out type oil filter mechanism and an emptying type extraction mechanism. The diverter cartridge is connected and arranged on both sides of the telescopic tube, the filter cartridge is connected and arranged on the side of the diverter cartridge away from the telescopic tube, the anti-pull-out type oil filter mechanism is arranged inside the filter cartridge, and the emptying type extraction mechanism is arranged on the telescopic tube. By connecting the oil and gas treatment structure with the machine tool box door, the oil and gas generated by the machine tool during operation are fully absorbed, thereby reducing the diffusion of oil and gas.

[0004] Since the chips generated during the turning process can be separated from the cutting fluid through the filter plate, when the tool holder turning feed rate increases instantaneously, the amount of chips generated increases, resulting in more oil and gas evaporating when the cutting fluid comes into contact with the chips. At this time, the suction machine cannot limit the excessive oil and gas from spreading outward, thereby affecting the surrounding working environment. Summary of the Invention

[0005] The present invention provides a vertical CNC machine tool based on an intelligent control system, which utilizes a material-moving rod to guide the debris on the filter screen into a material collection box for storage, thereby isolating the cutting fluid from the debris. A partition plate isolates the evaporated oil and gas in the material collection box from the external environment. The partition plate is then moved upward to draw the evaporated oil and gas in the material collection box into a return pipe. The oil and gas are liquefied into cutting fluid through a cold delivery pipe, thereby solving the problems raised in the above-mentioned background technology, namely:

[0006] To achieve the above-mentioned purpose, the vertical CNC machine tool based on the intelligent control system includes a workbench, a vertical tool holder and a rotary table, a guard plate is arranged around the rotary table, a rotating mechanism is arranged in the workbench at the bottom of the rotary table for synchronous rotation, a liquid collecting box and a material collecting box are fixedly arranged in the workbench at the bottom of the rotary table, the liquid collecting box and the material collecting box are spliced ​​into a circular box body, the top of the liquid collecting box is open and is provided with a filter screen, the rotating mechanism pushes the debris on the filter screen into the material collecting box by rotation, so that the debris is separated from the cutting fluid, an isolation mechanism is elastically arranged inside the liquid collecting box, and a collection mechanism is arranged between the liquid collecting box and the material collecting box to cool the oil and gas in the material collecting box and liquefy the oil and gas into liquid, the isolation mechanism moves downward to isolate the cutting fluid collected in the liquid collecting box from the external environment to limit the outward diffusion of oil and gas in the isolation mechanism, and when it moves upward, the distilled water is guided to the liquid collecting box for storage for recycling.

[0007] A vertical cylinder is fixedly provided on the top of the rotating shaft, and the vertical cylinder is slidably arranged with the material-moving rod, and a compression spring is elastically connected between the inside of the vertical cylinder and the material-moving rod. On the other hand, the filter screen is located at the collection box to form a gap, and an arc-shaped plate is provided at the gap to fit with both ends of the filter screen. A partition is movably provided in the middle of the arc-shaped plate to block the evaporated cutting fluid in the collection box from the external environment. The top of the partition is inclined, and an auxiliary plate with both ends fitting with the inner wall of the collection box is fixedly provided at the bottom of the partition, and a return spring is elastically provided between the auxiliary plate and the collection box;

[0008] Specifically, during operation, as the material removing rod rotates, the material removing rod moves the debris on the filter screen to the arc plate. During this process, since the elastic potential energy of the return spring is less than the elastic potential energy of the compression spring, when the material removing rod rotates from the arc plate to the partition, the material removing rod overcomes the elastic potential energy of the return spring and pushes the partition downward. When the partition is blocked by the return spring below, the partition stops moving downward, and the inside of the collection box is connected with the external environment. At this time, the material removing rod continues to rotate and moves the debris to fall from the inclined surface of the partition into the collection box, thereby achieving the purpose of separating the debris from the cutting fluid.

[0009] A second object of the present invention is to provide a high-precision machining method for a vertical CNC machine tool based on an intelligent control system, comprising the following steps:

[0010] S1. When processing a workpiece, first place the workpiece on the rotary table and fix it, and input corresponding parameters into the control system to control the movement of the vertical tool holder, the feed amount of the tool head, and the speed of the rotary table;

[0011] S2. The motor drives the shaft to rotate, and the filter separates the cutting fluid from the debris. The material moving rod rotates synchronously with the shaft and moves the debris on the filter into the collection box for storage. The partition blocks the evaporating cutting fluid in the collection box from the external environment to limit the escape of oil and gas.

[0012] S3. When the isolation plate moves up, the evaporated oil and gas in the collecting box are sucked out, so that the oil and gas are liquefied into liquid and flow back into the collecting box, thereby reducing the temperature of the cutting fluid in the collecting box and realizing the recycling of the cutting fluid.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Use the material rod to guide the debris on the filter screen into the collection box for storage, so that the cutting fluid and the debris are separated. The partition separates the evaporated oil and gas in the collection box from the external environment. Then use the isolation plate to move up to draw the evaporated oil and gas in the collection box into the return pipe. The oil and gas are liquefied into cutting fluid through the cold delivery pipe. This not only realizes the recycling of the cutting fluid, but also can use the cold capacity of the liquefied cutting fluid itself to cool the cutting fluid in the narrow mouth, thereby reducing the evaporation of cutting in the narrow mouth.

[0015] 2. When the cutting fluid flows from the wide mouth to the narrow mouth, the oil-absorbing cotton can effectively filter out the tiny metal impurities in the cutting fluid. With its porous structure and large specific surface area, the impurities are trapped in the pores, thereby purifying the cutting fluid for recycling and reducing production costs. In addition, the cutting fluid at the narrow mouth evaporates to form oil and gas, and the oil-absorbing cotton absorbs the evaporated oil and gas molecules, reducing the diffusion of oil and gas and improving the working environment.

[0016] 3. The isolation plate moves down from the wide mouth to the narrow mouth, forcing the pressure in the narrow mouth to increase and discharge the cutting fluid in the narrow mouth. In addition, the isolation plate can also limit the evaporation of the cutting fluid in the narrow mouth. At the same time, the isolation plate presses the air to pass through the oil-absorbing cotton, thereby discharging the oil and gas adsorbed in the oil-absorbing cotton, reducing the saturation of the oil-absorbing cotton, and causing the cutting fluid dripping from the top to enter the narrow mouth when moving upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0018] Figure 2 This is a front view of the internal structure of the workbench of the present invention;

[0019] Figure 3 This is a three-dimensional diagram of the liquid collection box, material collection box, and collection mechanism structure of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the reciprocating movement principle of the isolation plate of the present invention;

[0021] Figure 5 This is a three-dimensional diagram of the exploded structure of the filter screen, isolation plate, oil-absorbing cotton, material collection box, and liquid collection box of the present invention;

[0022] Figure 6 This is a right side view of the internal structure of the aggregate box of the present invention;

[0023] Figure 7 This is a schematic structural diagram of the oil and gas liquefaction principle in the return pipe of the present invention.

[0024] The meaning of each number in the figure is:

[0025] 100. Workbench; 101. Vertical tool rest; 102. Rotating table; 103. Guard plate;

[0026] 110, rotating mechanism; 111, motor; 111a, bracket; 112, material-moving rod; 113, crossbar; 114, vertical cylinder; 115, compression spring;

[0027] 120, liquid collection box; 121, filter screen; 122, oil-absorbing cotton; 123, air inlet pipe; 124, liquid discharge pipe;

[0028] 130. Collecting box; 131. Arc plate; 132. Partition plate; 133. Auxiliary plate; 134. Return spring;

[0029] 140. Collection mechanism; 141. Gas collecting box; 142. Return pipe; 143. Cooling delivery pipe;

[0030] 150. Isolation mechanism; 150a. Tension spring; 151. Isolation plate; 152. Movable ring; 153. Vertical pole; 154. Corrugated plate. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Since the chips generated during the turning process can be separated from the cutting fluid through the filter plate, however, when the tool holder turning feed rate increases instantaneously, the amount of chips generated increases, resulting in more oil and gas evaporating when the cutting fluid contacts the chips. At this time, the suction machine cannot limit the excessive oil and gas from diffusing outward, thereby affecting the surrounding working environment. The present invention provides a vertical CNC machine tool based on an intelligent control system, see Figure 1-Figure 3 As shown, it includes a workbench 100, a vertical tool holder 101 and a rotary table 102. The vertical tool holder 101 and the rotary table 102 are operated by a control system (not shown in the figure). A guard plate 103 is set around the rotary table 102. When processing a workpiece, the workpiece is first placed on the rotary table 102 and fixed, and parameters are input into the control system to realize the processing of the workpiece;

[0033] A rotating mechanism 110 is synchronously rotated in the workbench 100 at the bottom of the rotating table 102. A liquid collecting box 120 and a material collecting box 130 are fixedly installed in the workbench 100 at the bottom of the rotating table 102. The liquid collecting box 120 and the material collecting box 130 are spliced ​​into a circular box body. The top of the liquid collecting box 120 is open and is provided with a filter 121. The rotating mechanism 110 rotates to push the debris on the filter 121 into the material collecting box 130, so that the debris is separated from the cutting fluid.

[0034] In the process of rotating the rotary table 102, the chips from the workpiece are dropped onto the filter screen 121, and the cooled cutting fluid flows through the filter screen 121 to the liquid collecting box 120 for storage. Since the chips dropped onto the filter screen 121 are at a high temperature, they will accumulate if not processed in time. When new cutting fluid drips, the temperature of the cutting fluid flowing through the chips increases, which can easily cause the cutting fluid to evaporate. For this reason, the specific structure of the rotating mechanism 110 is shown below. The rotating mechanism 110 includes a motor 111, a rotating shaft and A material shifting rod 112, a bracket 111a is fixedly arranged between the motor 111 and the workbench 100, the rotating shaft is coaxially connected to the output shaft of the motor 111, and a plurality of material shifting rods 112 that fit with the filter screen 121 are arranged on the top of the rotating shaft. By starting the motor 111, the motor 111 drives the rotating shaft to rotate, and the rotating shaft and the material shifting rod 112 rotate synchronously. The material shifting rod 112 shifts the debris that falls on the filter screen 121 into the collection box 130 (the process is shown below), thereby separating the debris from the cutting fluid and avoiding contact between the cutting fluid and the debris.

[0035] The principle of the filter 121 moving the debris into the collection box 130 is as follows: First, Figure 4 、 Figure 5 As shown, a vertical cylinder 114 is fixedly provided on the top of the rotating shaft, and the vertical cylinder 114 and the material-moving rod 112 are slidably provided. A compression spring 115 is elastically connected between the interior of the vertical cylinder 114 and the material-moving rod 112. On the other hand, the filter screen 121 is located at the collection box 130 to form a gap, and an arc-shaped plate 131 is provided at the gap to fit with both ends of the filter screen 121. A partition 132 is movably provided in the middle of the arc-shaped plate 131 for blocking the evaporating cutting fluid in the collection box 130 from the external environment. The top of the partition 132 is inclined, and an auxiliary plate 133 is fixedly provided at the bottom of the partition 132 with both ends fitting with the inner wall of the collection box 130. A return spring 134 is elastically provided between the auxiliary plate 133 and the collection box 130 (reference Figure 6 、 Figure 7 shown);

[0036] When the hopper 132 is in the closed position, the hopper 132 is in the closed position, and ...

[0037] Then, because the bottom of the partition 132 was resisted when sliding along the inclined surface of the partition 132, the material removal rod 112 moved upward to compress the compression spring 115, and the elastic potential energy of the compression spring 115 increased. Therefore, when the material removal rod 112 detached from the top of the inclined surface of the partition 132, the elastic action of the compression spring 115 instantly pushed the material removal rod 112 to hit the curved plate 131, and the curved plates 131 at other positions hit the filter 121, causing the cutting fluid to drip into the liquid collection box 120, thereby reducing the residual and evaporation of the cutting fluid on the filter 121.

[0038] Secondly, considering that the temperature of the cutting fluid collected in the collection box 130 increases after coming into contact with the debris, evaporation will also occur during the storage process in the collection box 130, for this reason, the upper end of the collection box 130 is set to a wide mouth and the bottom end is set to a narrow mouth, and oil-absorbing cotton 122 that can absorb oil and gas and intercept impurities in the cutting fluid is provided in the narrow mouth. In this way, when the cutting fluid flows from the wide mouth into the narrow mouth, the oil-absorbing cotton 122 can effectively filter out fine metal impurities in the cutting fluid, and with its porous structure and large specific surface area, the impurities are trapped in the pores, thereby realizing the purification of the cutting fluid for recycling and reducing production costs. In addition, the cutting fluid at the narrow mouth evaporates to form oil and gas, and the oil-absorbing cotton 122 absorbs the evaporated oil and gas molecules, reduces the diffusion of oil and gas, and improves the working environment.

[0039] Furthermore, in order to realize the recycling of the evaporated oil and gas in the collecting box 130, an isolation mechanism 150 is elastically provided inside the collecting box 120, and a collection mechanism 140 is provided between the collecting box 120 and the collecting box 130 to cool the oil and gas in the collecting box 130 and liquefy the oil and gas into liquid. The isolation mechanism 150 moves downward to isolate the cutting fluid collected in the collecting box 120 from the external environment to limit the outward diffusion of the oil and gas in the isolation mechanism 150, and when it moves upward, the distilled water is guided to the collecting box 120 for storage for recycling.

[0040] So, return to Figure 2 、 Figure 4 、 Figure 6 FIG. 1 shows the specific structure of the isolation mechanism 150. The isolation mechanism 150 includes an isolation plate 151 that is sleeved with the narrow opening. The isolation plate 151 is elastically connected to the inner wall of the wide opening by a tension spring 150a. Under normal conditions, the isolation plate 151 is located at the wide opening, and a channel for the circulation of cutting fluid is formed between the isolation plate 151 and the inner wall of the liquid collecting box 120. When the isolation plate 151 moves into the narrow opening, the isolation plate 151 is used to expel the cutting fluid and force the oil and gas absorbed in the oil-absorbing cotton 122 to be discharged. In addition, the isolation plate 151 located in the narrow opening can also reduce the space of the narrow opening to limit the overflow of evaporated oil and gas.

[0041] Furthermore, the bottom of the liquid collecting box 120 is connected to a drain pipe 124 (refer to Figure 2 As shown in FIG1 ), the outside is connected to an air inlet pipe 123, and a first one-way valve is provided in both the discharge pipe 124 and the air inlet pipe 123. Therefore, when the isolation plate 151 moves upward, the first one-way valve in the discharge pipe 124 is used to allow external air to enter the liquid collecting box 120. When the isolation plate 151 moves upward, the first one-way valve in the air inlet pipe 123 is used to allow cutting fluid to be discharged from the liquid collecting box 120, thereby realizing recycling of the cutting fluid.

[0042] On the other hand, the principle of achieving the up and down reciprocating movement of the isolation plate 151 is as follows: a vertical rod 153 is fixedly provided at the bottom of the isolation plate 151, a movable ring 152 is fixedly provided at the bottom of the vertical rod 153, and a wave plate 154 staggered with the material-moving rod 112 is arranged in an array on the movable ring 152. A cross bar 113 is slidably provided on the wave plate 154, and the cross bar 113 is fixed to the rotating shaft;

[0043] Among them, process one: when the material-moving rod 112 slides from the filter screen 121 to the partition plate 132, under the action of the wave plate 154, the cross bar 113 slides along the trajectory of the wave plate 154 and applies pressure to the wave plate 154, so that the wave plate 154 pulls the vertical rod 153 to move downward, that is, the isolation plate 151 moves downward from the wide mouth to the narrow mouth, forcing the pressure in the narrow mouth to increase, and the cutting fluid in the narrow mouth is discharged. In addition, the isolation plate 151 can also limit the evaporation of the cutting fluid in the narrow mouth. At the same time, the isolation plate 151 presses the air to pass through the oil-absorbing cotton 122, thereby discharging the oil and gas adsorbed in the oil-absorbing cotton 122 and reducing the saturation of the oil-absorbing cotton 122;

[0044] Process 2 (that is, Figure 6The state shown by the middle crossbar 113 and the wave plate 154): When the material-moving rod 112 slides onto the partition 132, the partition 132 opens, and the crossbar 113 slides downward from the top of the wave plate 154. That is, under the elastic action of the tension spring 150a, the isolation plate 151 moves from a narrow opening to a wide opening. The isolation plate 151 draws in external air from the air inlet pipe 123 and simultaneously sucks in the evaporated oil and gas in the collection box 130. The sucked oil and gas are cooled by the collection mechanism 140;

[0045] Below Figure 3 、 Figure 6 Based on and combined with Figure 7 As shown, the collection mechanism 140 includes an air collecting box 141 connected to the collecting box 130, and a return pipe 142 with one end connected to the narrow opening of the liquid collecting box 120. The return pipe 142 is connected to the air collecting box 141. One end of the return pipe 142 connected to the air collecting box 141 is tilted upward, and the other end is sunken to form an inclined end. A cooling capacity delivery pipe 143 runs through the inclined end. The cooling capacity delivery pipe 143 is connected to an external cooling capacity supply device. By delivering cooling capacity to the cooling capacity delivery pipe 143, the oil and gas in the return pipe 142 will be liquefied into water droplets of cutting fluid when it is cooled. The cutting fluid flows through the return pipe 142 to the liquid collecting box 120 for storage.

[0046] That is to say, when the debris on the partition 132 falls into the collection box 130, the isolation plate 151 moves upward to draw in the evaporated oil and gas from the return pipe 142. This can prevent the evaporated oil and gas in the collection box 130 from escaping outward when the partition 132 is opened, thereby reducing pollution to the surrounding environment.

[0047] Working principle: When the debris on the surface of the partition 132 slides into the collecting box 130, the isolation plate 151 moves upward in the opposite direction to inhale air from the air intake pipe 123. Since the diameter of the return pipe 142 is larger than that of the air intake pipe 123, in order to meet the normal upward movement of the isolation plate 151, the air drawn into the single air intake pipe 123 is limited, so that it takes a while for the isolation plate 151 to move up and reset. Therefore, additional air needs to be drawn from the return pipe 142, that is, negative pressure is formed in the return pipe 142, so that the evaporated oil and gas in the collecting box 130 is liquefied after passing through the cold delivery pipe 143, and the cutting fluid formed after liquefaction flows back to the narrow opening of the collecting box 120 through the return pipe 142;

[0048] It should be noted that the connection between the return pipe 142 and the liquid collecting box 120 is lower than the oil-absorbing cotton 122 in the horizontal direction (refer to Figure 6The cutting fluid in the collecting box 120 can be directly mixed with the cutting fluid in the collecting box 120, saving time. Secondly, a second one-way valve is provided at the connection between the return pipe 142 and the collecting box 120. The second one-way valve is used to allow the liquefied cutting fluid to flow into the narrow opening. The purpose is to directly mix the cutting fluid liquefied by the oil and gas with the cutting fluid in the collecting box 120, thereby cooling the cutting fluid in the collecting box 120 and reducing the evaporation of the cutting fluid.

[0049] That is to say, the material rod 112 is used to guide the debris on the filter 121 to the collection box 130 for storage, so that the cutting fluid is separated from the debris, and the partition 132 isolates the evaporated oil and gas in the collection box 130 from the external environment. Then, the isolation plate 151 is moved upward to draw the evaporated oil and gas in the collection box 130 into the return pipe 142. The oil and gas are liquefied into cutting fluid through the cold delivery pipe 143, which not only realizes the recycling of the cutting fluid, but also can use the cold capacity of the liquefied cutting fluid itself to cool the cutting fluid in the narrow mouth, thereby reducing the evaporation of cutting in the narrow mouth.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical CNC machine tool based on an intelligent control system, comprising a workbench (100), a vertical tool rest (101), and a rotary table (102), wherein a guard plate (103) is provided around the rotary table (102), and characterized in that: A rotating mechanism (110) is synchronously rotated in the workbench (100) at the bottom of the rotating table (102). A liquid collecting box (120) and a material collecting box (130) are fixedly arranged in the workbench (100) at the bottom of the rotating table (102). The liquid collecting box (120) and the material collecting box (130) are spliced ​​into a circular box body. The top of the liquid collecting box (120) is open and is provided with a filter (121). The rotating mechanism (110) rotates to push the debris on the filter (121) into the material collecting box (130), so that the debris and the cut pieces are separated. Cutting fluid separation, an isolation mechanism (150) is elastically provided inside the liquid collecting box (120), and a collecting mechanism (140) is provided between the liquid collecting box (120) and the collecting box (130) to cool the oil and gas in the collecting box (130) and liquefy the oil and gas into liquid. The isolation mechanism (150) moves downward to isolate the cutting fluid collected inside the liquid collecting box (120) from the external environment to limit the outward diffusion of the oil and gas in the isolation mechanism (150), and when it moves upward, distilled water is guided to the liquid collecting box (120) for storage for recycling; The collecting box (130) has a wide opening at the top and a narrow opening at the bottom, and an oil-absorbing cotton (122) capable of absorbing oil and gas and trapping impurities in the cutting fluid is provided in the narrow opening; The isolation mechanism (150) includes an isolation plate (151) that is sleeved with the narrow opening. The isolation plate (151) is elastically connected to the inner wall of the wide opening by a tension spring (150a). Under normal conditions, the isolation plate (151) is located at the wide opening, and a channel for the circulation of cutting fluid is formed between the isolation plate (151) and the inner wall of the liquid collecting box (120). When the isolation plate (151) moves into the narrow opening, the isolation plate (151) is used to press the cutting fluid out and force the oil and gas absorbed in the oil-absorbing cotton (122) to be discharged. The rotating mechanism (110) includes a motor (111), a rotating shaft, and a material-moving rod (112); a bracket (111a) is fixedly provided between the motor (111) and the workbench (100); the rotating shaft is coaxially connected to the output shaft of the motor (111); and a plurality of material-moving rods (112) are provided on the top of the rotating shaft and are in contact with the filter screen (121); A vertical cylinder (114) is fixedly provided on the top of the rotating shaft, the vertical cylinder (114) and the material-moving rod (112) are slidably provided, and a compression spring (115) is elastically connected between the interior of the vertical cylinder (114) and the material-moving rod (112); The filter (121) is located at the collection box (130) to form a gap, and an arc-shaped plate (131) is provided at the gap to fit with both ends of the filter (121). A partition (132) is movably provided in the middle of the arc-shaped plate (131) for blocking the evaporated cutting fluid in the collection box (130) from the external environment. The top of the partition (132) is in the shape of an inclined plane, and an auxiliary plate (133) is fixedly provided at the bottom of the partition (132) with both ends fitting with the inner wall of the collection box (130). A return spring (134) is elastically provided between the auxiliary plate (133) and the collection box (130), and the elastic potential energy of the return spring (134) is less than the elastic potential energy of the compression spring (115).

2. The vertical CNC machine tool based on the intelligent control system according to claim 1, characterized in that: The bottom of the liquid collecting box (120) is connected to a liquid drain pipe (124), and the outside is connected to an air intake pipe (123). A first one-way valve is provided in both the liquid drain pipe (124) and the air intake pipe (123). The first one-way valve in the liquid drain pipe (124) is used to allow external air to enter the liquid collecting box (120), and the first one-way valve in the air intake pipe (123) is used to allow cutting fluid to be discharged from the liquid collecting box (120).

3. The vertical CNC machine tool based on the intelligent control system according to claim 1, characterized in that: A vertical rod (153) is fixedly provided at the bottom of the isolation plate (151), a movable ring (152) is fixedly provided at the bottom of the vertical rod (153), and wave plates (154) staggered with the material-moving rod (112) are arranged on the movable ring (152) in an array manner. A cross bar (113) is slidably provided on the wave plate (154), and the cross bar (113) is fixedly provided with the rotating shaft.

4. The vertical CNC machine tool based on the intelligent control system according to claim 2, characterized in that: The collecting mechanism (140) includes an air collecting box (141) connected to the material collecting box (130), and a return pipe (142) one end of which is connected to the narrow opening of the liquid collecting box (120). The return pipe (142) is connected to the air collecting box (141). One end of the return pipe (142) connected to the air collecting box (141) is tilted upward, and the other end is sunken to form an inclined end. A cold delivery pipe (143) runs through the inclined end. The diameter of the return pipe (142) is larger than the diameter of the air inlet pipe (123). The connection between the return pipe (142) and the liquid collecting box (120) is lower than the oil-absorbing cotton (122) in the horizontal direction. A second one-way valve is provided at the connection between the return pipe (142) and the liquid collecting box (120). The second one-way valve is used to allow liquefied cutting fluid to flow into the narrow opening.

5. A high-precision machining method for operating a vertical CNC machine tool based on an intelligent control system as claimed in claim 1, characterized in that: The method comprises the following steps: S1. When processing a workpiece, the workpiece is first placed on the rotary table (102) and fixed, and corresponding parameters are input into the control system to control the movement of the vertical tool holder (101), the feed amount of the tool head, and the rotation speed of the rotary table (102); S2, the motor (111) drives the rotating shaft to rotate, the filter (121) separates the cutting fluid from the debris, the material moving rod (112) rotates synchronously with the rotating shaft, and moves the debris on the filter (121) to the collection box (130) for storage, and the partition (132) blocks the evaporated cutting fluid in the collection box (130) from the external environment to limit the escape of oil and gas; S3. When the isolation plate (151) moves upward, the evaporated oil and gas in the collecting box (130) are sucked, and the oil and gas are liquefied into liquid by the collecting mechanism (140) and flow back into the collecting box (130), thereby reducing the temperature of the cutting fluid in the collecting box (130) and realizing the recycling of the cutting fluid.

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