Machining center with chip removal and cutting cooling liquid fine filtration system

Abstract

The invention relates to the technical field of machining center accessories, in particular to a machining center with a chip removal and cutting cooling liquid fine filtration system, which comprises a main machine part, and further comprises a liquid receiving tank, a lifting mechanism, a liquid storage pool, a flushing pump, a lifting pump and a fine filtration module, the liquid receiving tank receives used cutting cooling liquid flowing out of the main machine part, the lifting mechanism is installed on the liquid receiving tank, one end of the lifting mechanism is located in the liquid receiving tank, and the other end of the lifting mechanism is lifted upwards and downwards to be provided with a chip outlet. The side face of the end, close to the lifting end of the lifting mechanism, of the liquid receiving tank is provided with a liquid storage pool and communicated with the liquid receiving tank, the end, away from the liquid receiving tank, of the liquid storage pool is provided with a flushing pump, a lifting pump and a refined filtration module, the flushing pump sucks cutting cooling liquid from the liquid storage pool, and a flow outlet of the flushing pump is provided with a pipeline connected into the main machine part to flush tools and workpieces and cool the tools and the workpieces. And flushing and discharging the chips.

Description

Technical Field

[0001] The invention relates to the technical field of machining center accessories, in particular to a machining center with a chip removal and cutting coolant fine filtering system. Background Art

[0002] Machining centers are used to perform various types of processing on workpieces. During the processing, various auxiliary components are required to maintain the normal operation of the machining center, among which the cutting coolant circulation system is a relatively important part.

[0003] In the prior art, after the used cutting coolant flows out from the machine tool, it is collected and only simply filtered before being put into the cutting coolant pool for continued use. Some problems caused by this are: the cutting coolant cannot be processed after being mixed with some fine debris, the debris in the refluxed cutting coolant that is reused enters the processing surface and damages the processing surface, and the impure cutting coolant causes it to deteriorate faster, the cutting coolant has a short shelf life, and needs to be frequently replaced or reprocessed. Summary of the invention

[0004] The object of the present invention is to provide a machining center with a chip removal and cutting coolant fine filtration system to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: A machining center with a chip removal and cutting coolant fine filtering system comprises a main machine part, and the machining center also comprises a liquid receiving tank, a lifting mechanism, a liquid storage tank, a flushing pump, a lifting pump, and a fine filtering module. The liquid receiving tank is installed on the side of the main machine part, and the liquid receiving tank receives the used cutting coolant flowing out of the main machine part. The lifting mechanism is installed on the liquid receiving tank, and one end of the lifting mechanism is located in the liquid receiving tank. After the other end of the lifting mechanism is lifted up, a chip outlet is arranged downwardly. A section of the lifting mechanism is installed in the liquid receiving tank to receive the cutting coolant, and a liquid storage tank is arranged on the side of one end of the liquid receiving tank close to the lifting end of the lifting mechanism and is connected to each other. A flushing pump, a lifting pump, and a fine filtering module are arranged at the end of the liquid storage tank away from the liquid receiving tank. The flushing pump draws cutting coolant from the liquid storage tank, and a pipeline is arranged at the outlet of the flushing pump to flush the tool and the workpiece in the main machine part to cool the tool and the workpiece, as well as flush and remove chips. The lifting pump draws cutting coolant from the liquid storage tank and injects it into the fine filtering module, and the fine filtering module supplies cutting coolant for machining to the spindle in the main machine part.

[0006] The cutting coolant used in the main machine carries the large amount of metal debris from processing into the liquid receiving tank, and the cutting coolant flows to the bottom layer through the filter holes, and then flows horizontally from the end of the liquid receiving tank to the liquid storage pool. The metal debris is transferred to the end of the lifting mechanism by the conveyor belt in the lifting mechanism, and a cart is parked below it to receive the debris. The cutting coolant enters the liquid storage pool after simple filtration. There are several pumps at the far end of the liquid storage pool. The pumps suck the cutting coolant that has been preliminarily filtered from the liquid storage pool and send it to the required position in the machining center for injection. Among them, the lifting pump pumps the cutting coolant into the fine filter module for further filtration and impurity removal. The further purified cutting coolant is sent to the place in the main machine that needs pure cutting coolant in the fine filter module, such as the machining position. The cutting coolant at the machining position is attached to the spindle of the machining center and moves with the machining position. If the cutting coolant that has not been completely finely filtered is allowed to flow back to the machining position, some tiny debris may enter the machining surface and damage the machining surface, resulting in machining quality problems.

[0007] The interior of the liquid storage tank is separated into a zigzag flow channel by a partition. A filter sheet and an oil remover are arranged near the end of the liquid receiving tank of the zigzag flow channel. The filter sheet is closer to the liquid receiving tank than the oil remover. The oil remover absorbs the surface oil in the liquid storage tank to the outside of the liquid storage tank.

[0008] The cutting coolant that flows into the liquid storage tank from the side of the liquid receiving tank is blocked by the filter screen to limit the flow rate, preventing the excessively fast flow rate from entraining the cutting coolant that has not been re-filtered into the liquid storage tank. After the flow rate is reduced, most of the debris settles at the bottom of the liquid receiving tank and is scraped away by the lifting mechanism. The filter screen can also be replaced and cleaned regularly, which is an additional filtering measure. During the use of the cutting coolant, some of the liquid will decompose, and some oil components such as engine oil and lubricating oil in the main machine will be mixed into the cutting coolant, which needs to be removed to prevent the cutting coolant effect from being reduced. The cutting coolant that enters the liquid storage tank is taken away in the form of adsorption or scraping when it flows through the degreaser. Recognition errors are allowed here, and some cutting coolant is extracted at the degreaser without affecting the normal operation of the machine.

[0009] The oil remover includes a mounting frame, an oil guide plate, an oil guide groove, and an oil storage box. The mounting frame is arranged on the liquid storage pool, the mounting frame passes through the upper surface of the liquid storage pool, an oil guide plate that moves in an up and down direction is arranged inside the mounting frame, an oil guide groove is arranged on the side of the mounting frame, one end of the oil guide groove located inside the mounting frame is higher than the other end located outside the mounting frame, one end of the oil guide groove located inside the mounting frame is adjacent to the surface of the oil guide plate, and the oil storage box is installed on the liquid storage pool, and the oil storage box is located below the oil guide groove.

[0010] The oil guide plate is continuously immersed in the cutting coolant in the storage pool below. The surface oil is scraped up by the plate and carried to a higher place. When passing through the oil guide groove, it is scraped off by its end and flows into the oil storage box along the oil guide groove. The engine oil and other oils in the oil storage box can be cleaned regularly to keep the cutting coolant clean.

[0011] The fine filtration module includes a fine filtration tank, a filter tank, a main shaft liquid supply pump, and a separator. The fine filtration tank is installed on the liquid storage tank. The fine filtration tank is provided with a filter tank, a main shaft liquid supply pump, and a separator. The outlet at the lower end of the filter tank is located inside the fine filtration tank. The inlet of the filter tank is connected to the outlet of the separator. The inlet of the separator is connected to the outlet of the lifting pump. The inlet of the main shaft liquid supply pump is located inside the fine filtration tank.

[0012] The lifting pump pumps the cutting coolant in the liquid storage tank into the separator for simple separation. The cutting coolant then enters the filter tank for full filtration and purification. The cutting coolant after fine filtration in the filter tank remains in the fine filtration tank. The main shaft liquid supply pump sucks the cutting coolant from the fine filtration tank and pumps it to the main shaft in the main machine part for spraying.

[0013] The separator is a vortex separator. The circumferential tangential of the separator is connected to the outlet of the lifting pump. The center of the upper surface of the separator is connected to the filter tank. A drain valve is provided at the bottom of the separator.

[0014] The separator uses centrifugal action as the separation method for the cutting coolant pumped by the lifting pump. Some fine debris flows along the inner wall in the separator and accumulates at the bottom of the separator waiting to be drained. The liquid discharged from the top of the separator to the filter tank is the further purified cutting coolant, reducing the probability of filter tank blockage and extending the cleaning cycle of the filter tank.

[0015] A three-way outflow valve is provided at the outlet of the main shaft liquid supply pump. The third interface of the three-way outflow valve returns to the fine filtration tank.

[0016] The main shaft liquid supply pump is in an always-on state. When the cutting coolant needs to be sprayed in the main machine part, the three-way outflow valve connects the interface to the main shaft. When the cutting coolant is no longer sprayed in the main machine part, the cutting coolant flowing out of the main shaft liquid supply pump returns to the fine filtration tank. The three-way outflow valve can quickly switch the flow direction. If the main shaft liquid supply pump is turned on when in use and turned off when not in use, it will greatly extend the reaction time when the main shaft in the main machine part uses the liquid because the main shaft liquid supply pump needs to be started.

[0017] The fine filtration module further includes an overflow pipe. One end of the overflow pipe is located inside the fine filtration tank, and the other end of the overflow pipe communicates with the liquid storage tank. The end of the overflow pipe inside the fine filtration tank is higher than the pipe orifice of the suction pipe of the main shaft liquid supply pump.

[0018] The lifting pump continuously pumps the cutting coolant in the liquid storage tank into the fine filtration tank. There will be a situation where the main machine part does not take the liquid from the main shaft liquid supply pump at this time. Therefore, there needs to be a space to accommodate the extra part of the flow rate of the lifting pump. The overflow pipe allows the extra part of the cutting coolant in the fine filtration tank to flow back, forming a cycle. The continuous cycle can also continuously purify the cutting coolant stored in the liquid storage tank.

[0019] A pool liquid level gauge is provided in the liquid storage tank, and a tank liquid level gauge is provided in the fine filtration tank. The tank liquid level gauge is electrically connected to the lifting pump.

[0020] The pool level gauge is used to display the storage amount of cutting coolant in the storage pool. When it is insufficient, it needs to be replenished in time to prevent insufficient cutting coolant in the main engine. The box level gauge can form a control relationship with the lift pump. If the liquid level in the fine filter box is too high, the lift pump will be shut down. If it is too low, the lift pump will be controlled to start.

[0021] A diverter block and a ring spray pump are also arranged on the liquid storage pool. The diverter block is connected to the outlet of the flushing pump. The ring spray pump draws cutting coolant from the liquid storage pool and sends it to the main machine part.

[0022] The ring spray pump is used for overall spray cooling within the workpiece range of the main machine, supplying an additional cutting coolant action mode. The diverter block diverts the outflow liquid of the flushing pump to different pipe outlets, and the supply flow of each pipe outlet can be independently adjusted by a valve.

[0023] Pressure gauges are installed at the outlets of the diverter block, ring spray pump, and spindle fluid supply pump.

[0024] Use the pressure gauge to observe the outflow pressure of the pump to check whether it meets the liquid supply indicators required by the main unit.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention processes the used cutting coolant through multi-pass filtering measures; the cutting coolant after simple treatment is used for flushing the debris and workpiece table in the main machine part, and cooling the tool and the workpiece at the same time; the cutting coolant after fine filtration is supplied to the main shaft in the main machine part, and is used for lubrication and cooling of the processing position, flushing chips and cooling from the center of the tool, and is suitable for deep hole processing and processing of deep cavity parts; the cutting coolant after fine filtration prevents the inclusion of fine powdered metal objects inside, thereby damaging the processing surface; an oil removal structure for the cutting coolant is arranged in the bent liquid storage pool to prevent the engine oil, lubricating oil and other oils mixed therein from continuing to circulate with the cutting coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention except the main unit; Figure 3 It is a schematic diagram of the appearance of the present invention after removing the main body, the liquid storage tank shell, and one end of the liquid receiving tank from another viewing angle; Figure 4 It is a structural schematic diagram of the fine filtration module of the present invention; Figure 5 yes Figure 3 A partial view in FIG. Figure 6 It is a schematic diagram of the appearance of the present invention after removing the main body, the liquid storage tank shell, and one end of the liquid receiving tank from another viewing angle; In the figure: 11, liquid receiving tank; 12, lifting mechanism; 2, liquid storage tank; 3, oil separator; 31, mounting frame; 32, oil guide plate; 33, oil guide groove; 34, oil storage box; 41, flushing pump; 42, flow dividing block; 43, lifting pump; 44, ring spraying pump; 5, fine filtration module; 51, fine filtration box; 52, filter tank; 53, main shaft liquid supply pump; 54, separator; 55, three-way outflow valve; 56, overflow pipe; 61, pool liquid level gauge; 62, box liquid level gauge; 7, filter screen; 8, trolley; 9, main machine part. Detailed implementation mode

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] A machining center with a chip removal and cutting coolant fine filtration system includes a main machine part 9. The machining center further includes a liquid receiving tank 11, a lifting mechanism 12, a liquid storage tank 2, a flushing pump 41, a lifting pump 43, and a fine filtration module 5. The liquid receiving tank 11 is installed on the side of the main machine part 9. The liquid receiving tank 11 receives the used cutting coolant flowing out of the main machine part 9. The lifting mechanism 12 is installed on the liquid receiving tank 11. One end of the lifting mechanism 12 is located in the tank of the liquid receiving tank 11. The other end of the lifting mechanism 12 is lifted and then downwardly provided with a chip outlet. A section of the lifting mechanism 12 installed in the liquid receiving tank 11 receives the cutting coolant. A liquid storage tank 2 is provided and communicated on the side of one end of the liquid receiving tank 11 close to the lifted end of the lifting mechanism 12. A flushing pump 41, a lifting pump 43, and a fine filtration module 5 are provided at one end of the liquid storage tank 2 away from the liquid receiving tank 11. The flushing pump 41 sucks the cutting coolant from the liquid storage tank 2. A pipeline is connected to the outlet of the flushing pump 41 to flush the cutting tool and the workpiece in the main machine part 9, cool the cutting tool and the workpiece, and flush and discharge chips. The lifting pump 43 sucks the cutting coolant from the liquid storage tank 2 and injects it into the fine filtration module 5. The fine filtration module 5 supplies the cutting coolant for machining at the main shaft in the main machine part 9.

[0029] Such as Figure 1 、 2As shown, the used cutting coolant of the main machine part 9 carries the large amount of processed metal chips into the liquid receiving tank 11, and the cutting coolant flows to the bottom layer through the filter hole, and then flows horizontally from the end of the liquid receiving tank 11 to the liquid storage tank 2. The metal chips are transferred to the end of the lifting mechanism 12 by the conveyor belt in the lifting mechanism 12, and the cart 8 is parked below to receive the chips. The cutting coolant enters the liquid storage tank 2 after simple filtration. There are several pumps at the far end of the liquid storage tank 2. The pumps suck the cutting coolant that has been preliminarily filtered from the liquid storage tank 2 and send it to the machining center The cutting coolant is sprayed at the required position, wherein the lifting pump 43 pumps the cutting coolant into the fine filter module 5 for further filtering and impurity removal. The further purified cutting coolant is sent in the fine filter module 5 to the place where pure cutting coolant is needed in the main unit 9, such as the processing position. The cutting coolant at the processing position is attached to the spindle of the machining center and moves with the processing position. If the cutting coolant that has not been completely finely filtered is allowed to flow back to the processing position, some tiny debris may enter the processing surface and damage the processing surface, resulting in processing quality problems.

[0030] The interior of the liquid storage pool 2 is separated into a tortuous flow channel by a partition. A filter 7 and an oil remover 3 are arranged at the end of the tortuous flow channel near the liquid receiving tank 11. The filter 7 is closer to the liquid receiving tank 11 than the oil remover 3. The oil remover 3 absorbs the surface oil in the liquid storage pool 2 to the outside of the liquid storage pool 2.

[0031] like Figure 2 , 3 As shown in Figures 5 and 6, the cutting coolant flowing into the liquid storage pool 2 from the side of the liquid receiving tank 11 is blocked by the filter screen 7 to limit the flow rate, preventing the excessively fast flow rate from entraining the cutting coolant that has not been re-filtered into the liquid storage pool 2. After the flow rate is reduced, most of the debris settles at the bottom of the liquid receiving tank 11 and is scraped away by the lifting mechanism 12. The filter screen 7 can also be replaced and cleaned regularly, which is an additional filtering measure. During the use of the cutting coolant, part of the liquid will decompose, and some oil components such as engine oil and lubricating oil in the main unit 9 will be mixed into the cutting coolant, which needs to be removed to prevent the effect of the cutting coolant from being reduced. When the cutting coolant enters the liquid storage pool 2 and flows through the degreaser 3, it is taken away in the form of adsorption or scraping. Recognition errors are allowed here, and part of the cutting coolant is extracted at the degreaser 3 without affecting the normal operation of the machine.

[0032] The oil remover 3 includes a mounting frame 31, an oil guide plate 32, an oil guide groove 33, and an oil storage box 34. The mounting frame 31 is set on the liquid storage pool 2, and the mounting frame 31 passes through the upper surface of the liquid storage pool 2. An oil guide plate 32 that moves in an up and down direction is set in the mounting frame 31. An oil guide groove 33 is set on the side of the mounting frame 31. One end of the oil guide groove 33 located inside the mounting frame 31 is higher than the other end located outside the mounting frame 31. One end of the oil guide groove 33 located inside the mounting frame 31 is adjacent to the surface of the oil guide plate 32. The oil storage box 34 is installed on the liquid storage pool 2, and the oil storage box 34 is located below the oil guide groove 33.

[0033] As Figure 5 shown, the oil guide plate 32 continuously immerses into the cutting coolant in the lower liquid storage tank 2. The surface oil is scraped up by the plate and carried to a higher place. When passing through the oil guide groove 33, it is scraped off by the end of the oil guide groove 33 and flows into the oil storage box 34 along the oil guide groove 33. Just clean the oil such as engine oil in the oil storage box 34 regularly to keep the cutting coolant clean.

[0034] The fine filtration module 5 includes a fine filtration box 51, a filter tank 52, a main shaft supply pump 53, and a separator 54. The fine filtration box 51 is installed on the liquid storage tank 2. The fine filtration box 51 is provided with the filter tank 52, the main shaft supply pump 53, and the separator 54. The lower outlet of the filter tank 52 is located in the fine filtration box 51. The inlet of the filter tank 52 is connected to the outlet of the separator 54. The inlet of the separator 54 is connected to the outlet of the lift pump 43. The inlet of the main shaft supply pump 53 is located in the fine filtration box 51.

[0035] As Figure 3 、 4 shown, the lift pump 43 pumps the cutting coolant in the liquid storage tank 2 into the separator 54 for simple separation. The cutting coolant then enters the filter tank 52 for full filtration and purification. The cutting coolant after fine filtration in the filter tank 52 remains in the fine filtration box 51. The main shaft supply pump 53 sucks the cutting coolant from the fine filtration box 51 and pumps it to the main shaft in the main machine part 9 for spraying.

[0036] The separator 54 is a vortex separator. The circumferential tangential direction of the separator 54 is connected to the outlet of the lift pump 43. The center of the upper surface of the separator 54 is connected to the filter tank 52. A drain valve is provided at the bottom of the separator 54.

[0037] As Figure 4 shown, the separator 54 uses the centrifugal action as the separation method for the cutting coolant pumped by the lift pump 43. Some fine debris flows along the inner wall in the separator 54 and accumulates at the bottom of the separator 54 waiting to be drained. The liquid drained from the top of the separator 54 into the filter tank 52 is the further purified cutting coolant, reducing the probability of clogging of the filter tank 52 and lengthening the cleaning cycle of the filter tank 52.

[0038] A three-way outlet valve 55 is provided at the outlet of the main shaft supply pump 53. The third interface of the three-way outlet valve 55 returns to the fine filtration box 51.

[0039] As Figure 3 、 4As shown, the main shaft supply pump 53 is in a normally open state. When coolant spraying is required inside the main machine unit 9, the three-way outflow valve 55 connects to the main shaft at the interface. When coolant spraying inside the main machine unit 9 stops, the coolant discharged by the main shaft supply pump 53 flows back into the fine filter tank 51. The three-way outflow valve 55 can quickly switch the flow direction. If the main shaft supply pump 53 is opened when in use and closed when not in use, the response time when the main shaft uses the liquid inside the main machine unit 9 will be greatly extended because the main shaft supply pump 53 needs to be started.

[0040] The fine filter module 5 further includes an overflow pipe 56. One end of the overflow pipe 56 is located inside the fine filter tank 51, and the other end of the overflow pipe 56 communicates with the liquid storage tank 2. The end of the overflow pipe 56 inside the fine filter tank 51 is higher than the pipe orifice of the suction pipe of the main shaft supply pump 53.

[0041] The lift pump 43 continuously pumps the cutting coolant in the liquid storage tank 2 into the fine filter tank 51. There may be a situation where the main machine unit 9 does not draw liquid from the main shaft supply pump 53 at this time. Therefore, there needs to be a space to accommodate the excess part of the lift pump 43 in terms of flow rate. The overflow pipe 56 allows the excess cutting coolant in the fine filter tank 51 to flow back, forming a cycle. The continuous cycle can also continuously purify the cutting coolant stored in the liquid storage tank 2.

[0042] A pool liquid level gauge 61 is arranged inside the liquid storage tank 2, and a tank liquid level gauge 62 is arranged inside the fine filter tank 51. The tank liquid level gauge 62 is electrically connected to the lift pump 43.

[0043] The pool liquid level gauge 61 is used to externally display the storage amount of the cutting coolant in the liquid storage tank 2. When it is insufficient, it needs to be replenished in time to prevent the lack of cutting coolant inside the main machine unit 9. The tank liquid level gauge 62 can form a control relationship with the lift pump 43. When the liquid level inside the fine filter tank 51 is too high, the lift pump 43 is stopped, and when it is too low, the lift pump 43 is controlled to start.

[0044] A flow splitting block 42 and a ring spray pump 44 are also arranged on the liquid storage tank 2. The flow splitting block 42 is connected to the outlet of the flushing pump 41, and the ring spray pump 44 sucks the cutting coolant from the liquid storage tank 2 and sends it into the main machine unit 9.

[0045] The ring spray pump 44 is used for overall spraying and cooling within the range of the workpiece inside the main machine unit 9, providing an additional way of supplying cutting coolant. The flow splitting block 42 splits and conveys the liquid discharged by the flushing pump 41 to different pipe orifices, and the supply flow rate of each pipe orifice can be independently adjusted through a valve.

[0046] Pressure gauges are arranged at the outlet positions of the flow splitting block 42, the ring spray pump 44, and the main shaft supply pump 53.

[0047] The pressure gauges observe the pressure of the liquid discharged by the pumps to check whether it meets the liquid supply index required inside the main machine unit 9.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in all respects, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A machining center with a chip removal and fine filtering system for cutting coolant, comprising a main machine part (9), characterized in that: The machining center further includes a liquid receiving tank (11), a lifting mechanism (12), a liquid storage tank (2), a flushing pump (41), a lifting pump (43), and a fine filtration module (5). The liquid receiving tank (11) is installed on the side of the main machine part (9). The liquid receiving tank (11) receives the used cutting coolant flowing out of the main machine part (9). The lifting mechanism (12) is installed on the liquid receiving tank (11). One end of the lifting mechanism (12) is located inside the liquid receiving tank (11). The other end of the lifting mechanism (12) is lifted and then downward to set a chip outlet. A section of the lifting mechanism (12) installed in the liquid receiving tank (11) receives the cutting coolant. A liquid storage tank (2) is provided and communicated on the side of one end of the liquid receiving tank (11) close to the lifted end of the lifting mechanism (12). A flushing pump (41), a lifting pump (43), and a fine filtration module (5) are provided at one end of the liquid storage tank (2) away from the liquid receiving tank (11). The flushing pump (41) sucks the cutting coolant from the liquid storage tank (2). A pipeline is connected to the outlet of the flushing pump (41) to flush the workpiece table into the main machine part (9). The lifting pump (43) sucks the cutting coolant from the liquid storage tank (2) and injects it into the fine filtration module (5). The fine filtration module (5) supplies the cutting coolant for machining to the spindle in the main machine part (9).

2. The machining center with a chip removal and cutting coolant fine filtration system according to claim 1, characterized in that: The interior of the liquid storage tank (2) is isolated into a zigzag flow channel by a partition. A filter screen (7) and an oil separator (3) are provided at the end of the zigzag flow channel close to the liquid receiving tank (11). The filter screen (7) is closer to the liquid receiving tank (11) than the oil separator (3). The oil separator (3) adsorbs the oil on the surface layer in the liquid storage tank (2) to the outside of the liquid storage tank (2).

3. The machining center with a chip removal and cutting coolant fine filtration system according to claim 2, characterized in that: The oil separator (3) includes a mounting frame (31), an oil guide plate (32), an oil guide groove (33), and an oil storage box (34). The mounting frame (31) is provided on the liquid storage tank (2). The mounting frame (31) penetrates the upper surface of the liquid storage tank (2). An oil guide plate (32) moving in a circular motion in the up and down direction is provided inside the mounting frame (31). An oil guide groove (33) is provided on the side of the mounting frame (31). One end of the oil guide groove (33) located inside the mounting frame (31) is higher than the other end located outside the mounting frame (31). One end of the oil guide groove (33) located inside the mounting frame (31) is adjacent to the surface of the oil guide plate (32). The oil storage box (34) is installed on the liquid storage tank (2). The oil storage box (34) is located below the oil guide groove (33).

4. The machining center with a chip removal and cutting coolant fine filtering system according to claim 2, wherein: The fine filtration module (5) includes a fine filtration box (51), a filter tank (52), a spindle liquid supply pump (53), and a separator (54). The fine filtration box (51) is installed on the liquid storage tank (2). The fine filtration box (51) is provided with a filter tank (52), a spindle liquid supply pump (53), and a separator (54). The outlet at the lower end of the filter tank (52) is located inside the fine filtration box (51). The inlet of the filter tank (52) is connected to the outlet of the separator (54). The inlet of the separator (54) is connected to the outlet of the lifting pump (43). The inlet of the spindle liquid supply pump (53) is located inside the fine filtration box (51).

5. The machining center with a chip removal and cutting coolant fine filtration system according to claim 4, characterized in that: The separator (54) is a vortex separator. The circumference of the separator (54) is tangentially connected to the outlet of the lift pump (43). The center of the upper surface of the separator (54) is connected to the filter tank (52). A drain valve is provided at the bottom of the separator (54).

6. The machining center with a chip removal and cutting coolant fine filtering system according to claim 4, characterized in that: A three-way outlet valve (55) is provided at the outlet of the main shaft liquid supply pump (53). The third interface of the three-way outlet valve (55) returns to the fine filter tank (51).

7. The machining center with a chip removal and cutting coolant fine filtration system according to claim 4, characterized in that: The fine filter module (5) further includes an overflow pipe (56). One end of the overflow pipe (56) is located inside the fine filter tank (51). The other end of the overflow pipe (56) communicates with the liquid storage tank (2). The end of the overflow pipe (56) inside the fine filter tank (51) is higher than the pipe orifice of the suction pipe of the main shaft liquid supply pump (53).

8. The machining center with a chip removal and cutting coolant fine filtration system according to claim 7, characterized in that: A pool liquid level gauge (61) is provided inside the liquid storage tank (2). A tank liquid level gauge (62) is provided inside the fine filter tank (51). The tank liquid level gauge (62) is electrically connected to the lift pump (43).

9. The machining center with a chip removal and precision filtering system for cutting coolant according to claim 2, characterized in that: A flow dividing block (42) and an annular spray pump (44) are further provided on the liquid storage tank (2). The flow dividing block (42) is connected to the outlet of the flushing pump (41). The annular spray pump (44) sucks the cutting coolant from the liquid storage tank (2) and sends it into the main machine part (9).

10. The machining center with a chip removal and cutting coolant fine filtering system according to claim 9, characterized in that: Pressure gauges are provided at the outlet positions of the flow dividing block (42), the annular spray pump (44), and the main shaft liquid supply pump (53).

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