Hydraulic equipment of a turn-milling combined numerical control machine tool

Abstract

The utility model discloses a kind of hydraulic equipment of turning and milling composite numerical control machine tool, it is related to numerical control machine tool technical field.The utility model includes hydraulic part, the hydraulic part is used to store hydraulic oil;Cooling part, the cooling part is installed above hydraulic part, the cooling part is used to cool hydraulic oil;And reject part, the reject part is installed inside hydraulic part, the reject part is used to filter hydraulic oil.The utility model is cooled by setting cooling box, specifically is that redundant hydraulic oil enters into overflow pipe, then again through overflow pipe into butt block, and enter inside cooling pipe, then start motor, motor starts to drive fan rotation, then again through fan rotation to suck the airflow outside to cooling box inside, then through the flow of airflow to cool the hydraulic oil inside cooling pipe, and re-enter hydraulic tank through discharge pipe, prevent backflow hydraulic oil because temperature is too high, make it appear cavity phenomenon.

Description

Technical Field

[0001] This utility model belongs to the field of CNC machine tool technology, and in particular relates to a hydraulic device for a turning and milling composite CNC machine tool. Background Technology

[0002] The turning-milling composite CNC machine tool uses hydraulic cylinders to drive the gear sets in the mechanical gearbox to switch, realizing multi-level speed regulation of the spindle to meet the speed requirements of different processing scenarios. The hydraulic equipment is the core system for realizing the machine tool's power transmission, motion control and auxiliary functions. Its design must take into account high precision, high stability and multi-functional integration.

[0003] Existing devices often experience overflow when extracting hydraulic oil, and this overflowed hydraulic oil is reinjected into the hydraulic tank. However, this portion of hydraulic oil generates heat through friction with components such as pipelines, valves, and pumps during its flow. Especially under high pressure, high flow rate, or prolonged operation, this frictional heat accumulates, causing the viscosity of the hydraulic oil to decrease significantly with increasing temperature. This leads to increased leakage in the hydraulic system, reduced volumetric efficiency, and even cavitation, affecting system stability and response speed. To address this, we provide a hydraulic system for a milling and turning CNC machine tool. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic system for a milling and turning CNC machine tool. A fan draws external airflow into the cooling tank, which then cools the hydraulic oil inside the cooling pipes. The oil is then discharged back into the hydraulic tank through a drain pipe. This prevents the backflowing hydraulic oil from cavitating due to excessive temperature. This invention solves the problem that the viscosity of existing hydraulic oil decreases significantly with increasing temperature, leading to increased hydraulic system leakage, reduced volumetric efficiency, and even cavitation, thus affecting system stability and response speed.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a hydraulic system for a milling and turning composite CNC machine tool, comprising a hydraulic unit for storing hydraulic oil.

[0007] A cooling section, mounted above the hydraulic section, is used to cool the hydraulic oil; and

[0008] The filtering section is installed inside the hydraulic section and is used to filter the hydraulic oil.

[0009] During the process of drawing hydraulic oil from the hydraulic section, some hydraulic oil will overflow, and then the overflowing hydraulic oil will be cooled by the cooling section.

[0010] Furthermore, the hydraulic unit includes a suction assembly for suctioning hydraulic oil; and

[0011] A conveying assembly, which is installed on the right side of the suction assembly, is used to convey hydraulic oil;

[0012] In this process, after the suction component extracts the hydraulic oil, it is transported into the conveying component and delivered to the designated area.

[0013] Furthermore, the cooling section includes a cooling assembly for cooling the hydraulic oil; and

[0014] A recovery assembly, mounted above the cooling assembly, is used to re-feed excess hydraulic oil back into the suction assembly;

[0015] In this process, after excess hydraulic oil enters the recovery component, it is cooled by the cooling component.

[0016] Furthermore, the rejection section includes a locking component for closing the injection port; and

[0017] A filter assembly, which is installed inside the suction assembly, is used to filter hydraulic oil;

[0018] During the injection of hydraulic oil, it is filtered by a filter assembly, and after the injection is completed, the filter assembly is sealed by a locking assembly.

[0019] Furthermore, the suction assembly includes a hydraulic tank, a suction pump is fixedly connected to the top of the hydraulic tank, a suction pipe is fixedly connected to the inner wall of the hydraulic tank, the right side of the suction pipe is fixedly connected to the output end of the suction pump, and an overflow pipe is fixedly connected to the top output end of the suction pump.

[0020] The delivery assembly includes a check valve fixedly connected to the right output end of the suction pump. A check valve is a type of valve that automatically opens and closes its valve disc based on the flow of the medium itself, used to prevent backflow. It is also known as a non-return valve, check valve, backflow valve, and back pressure valve. CV type: elastic sealing ring valve seat, noiseless, effective backflow prevention; maximum working pressure 207 bar (3000 psig); various end connections and valve body materials are available. A delivery pipe is fixedly connected to the right side of the check valve, and a pressure gauge is fixedly connected to the top of the delivery pipe. A pressure gauge is an instrument used to measure the pressure of a fluid (gas or liquid). Through the elastic deformation of a sensitive element (such as a Bourdon tube, diaphragm, bellows, etc.) inside the gauge, the pressure deformation is transmitted to a pointer or digital display device by a mechanism, thereby indicating the measured pressure value. A connection box is fixedly connected to the right side of the delivery pipe.

[0021] The hydraulic oil inside the hydraulic tank is fed into the delivery pipe through a suction pump and suction pipe, and then into the connecting box through the delivery pipe.

[0022] Furthermore, the cooling assembly includes a cooling box fixedly connected to the top of the hydraulic tank, a filter grid fixedly connected to the back of the cooling box, a fixing plate fixedly connected to the inner wall of the cooling box, a motor fixedly connected to the bottom of the fixing plate, and a fan fixedly connected to the output end of the motor via a coupling.

[0023] The recovery assembly includes a docking block fixedly connected to the top of the cooling tank. There are two docking blocks. The top of the docking block on the left is fixedly connected to the overflow pipe, and the bottom of the docking block is fixedly connected to the cooling pipe, which extends into the interior of the cooling tank. The top of the docking block on the right is fixedly connected to the discharge pipe, and the other end of the discharge pipe extends into the interior of the hydraulic tank.

[0024] The excess hydraulic oil is fed into the cooling pipe through the overflow pipe, and then the fan driven by the motor draws in external airflow into the cooling box to cool the hydraulic oil in the cooling pipe.

[0025] Furthermore, the locking assembly includes a rotating platform fixedly connected to the top of the hydraulic tank, a sealing cover rotatably connected inside the rotating platform, a locking block fixedly connected to the top of the hydraulic tank, a locking rod slidably connected to the inner wall of the locking block, the locking rod being snapped into the sealing cover, and an air cushion fixedly connected to the bottom of the sealing cover.

[0026] The filter assembly includes a locking groove on the top of a hydraulic tank, a support frame fixedly connected to the inner wall of the hydraulic tank, a limit rod inserted into the inner wall of the locking groove, a connecting ring fixedly connected to the top of the limit rod, and the top of the connecting ring contacting the bottom of the air pad.

[0027] When the sealing cap is placed over the connecting ring, the air cushion is compressed and deformed, filling the gap between the connecting ring and the sealing cap.

[0028] This utility model has the following beneficial effects:

[0029] 1. This utility model incorporates a cooling tank. Specifically, excess hydraulic oil enters the overflow pipe, then flows through the overflow pipe into the docking block, and finally into the cooling pipe. The motor is then started, driving the fan to rotate. The fan draws external airflow into the cooling tank, which cools the hydraulic oil inside the cooling pipe. The oil then returns to the hydraulic tank through the discharge pipe, preventing the backflowing hydraulic oil from cavitating due to excessive temperature.

[0030] 2. This utility model incorporates a filter screen. Specifically, when hydraulic oil enters the hydraulic tank, it first passes through the filter screen to remove impurities, ensuring the purity of the hydraulic oil. When the filter screen needs to be replaced, simply rotate the connecting ring. The rotation of the connecting ring will cause the limit rod to rotate, dislodging the filter screen from the locking groove. Then, pull the connecting ring upwards to remove the filter screen. The operation is simple and requires no additional fixing.

[0031] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This utility model Figure 1 A magnified overall structural diagram of A in the middle;

[0035] Figure 3 This is a schematic diagram of the overall structure of the top of the hydraulic tank of this utility model;

[0036] Figure 4 This is a schematic cross-sectional view of the rear of the cooling box of this utility model;

[0037] Figure 5 This is a schematic diagram of the overall structure of the connecting ring of this utility model;

[0038] Figure 6 This utility model Figure 5 A magnified structural diagram of B in the diagram;

[0039] Figure 7 This is a front sectional view of the hydraulic tank of this utility model.

[0040] The attached diagram lists the components represented by each number as follows:

[0041] 1. Hydraulic Unit; 11. Suction Assembly; 111. Hydraulic Tank; 112. Suction Pump; 113. Suction Pipe; 114. Overflow Pipe; 12. Conveying Assembly; 121. Check Valve; 122. Pressure Gauge; 123. Conveying Pipe; 124. Connecting Box; 2. Cooling Unit; 21. Cooling Assembly; 211. Cooling Tank; 212. Filter Grille; 213. Fixing Plate; 214. Motor; 215. Fan; 22. Recovery Assembly; 221. Connecting Block; 222. Cooling Pipe; 223. Discharge Pipe; 3. Removal Unit; 31. Locking Assembly; 311. Sealing Cover; 312. Rotating Table; 313. Locking Block; 314. Locking Rod; 315. Inflatable Cushion; 32. Filter Assembly; 321. Support Frame; 322. Filter Screen; 323. Connecting Ring; 324. Locking Groove; 325. Limiting Rod. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1-7As shown, this utility model is a hydraulic system for a milling and turning composite CNC machine tool, including a hydraulic unit 1 for storing hydraulic oil; a cooling unit 2 installed above the hydraulic unit 1 for cooling the hydraulic oil; and a filtering unit 3 installed inside the hydraulic unit 1 for filtering the hydraulic oil. When the hydraulic unit 1 draws hydraulic oil, some hydraulic oil overflows, and the cooling unit 2 cools the overflowing hydraulic oil. The hydraulic unit 1 includes a suction assembly 11 for suctioning hydraulic oil; and a conveying assembly 12 installed to the right of the suction assembly 11 for conveying hydraulic oil. The hydraulic oil is conveyed; after the suction assembly 11 extracts the hydraulic oil, it is conveyed into the conveying assembly 12 and sent to a designated area; the cooling unit 2 includes a cooling assembly 21 for cooling the hydraulic oil; and a recovery assembly 22, which is installed above the cooling assembly 21 and is used to send excess hydraulic oil back into the suction assembly 11; wherein, after the excess hydraulic oil enters the recovery assembly 22, it is cooled by the cooling assembly 21; the rejection unit 3 includes a locking assembly 31 for sealing the injection port; and a filtering assembly 32, which is installed on the suction assembly 11. Inside component 11, filter assembly 32 is used to filter hydraulic oil; wherein, during the injection of hydraulic oil, it is filtered by filter assembly 32, and after the injection is completed, filter assembly 32 is sealed by locking assembly 31; suction assembly 11 includes hydraulic tank 111, suction pump 112 is fixedly connected to the top of hydraulic tank 111, suction pipe 113 is fixedly connected to the inner wall of hydraulic tank 111, the right side of suction pipe 113 is fixedly connected to the output end of suction pump 112, and overflow pipe 114 is fixedly connected to the top output end of suction pump 112; conveying assembly 12 includes one-way valve 121 fixedly connected to the right output end of suction pump 112, and conveying assembly 124 is fixedly connected to the right side of one-way valve 121. Pipe 123, a pressure gauge 122 is fixedly connected to the top of the conveying pipe 123, and a connecting box 124 is fixedly connected to the right side of the conveying pipe 123; wherein, the hydraulic oil inside the hydraulic tank 111 is sent into the conveying pipe 123 through the suction pump 112 in cooperation with the suction pipe 113, and then sent into the connecting box 124 through the conveying pipe 123; the cooling assembly 21 includes a cooling box 211 fixedly connected to the top of the hydraulic tank 111, a filter grid 212 fixedly connected to the back of the cooling box 211, a fixing plate 213 fixedly connected to the inner wall of the cooling box 211, a motor 214 fixedly connected to the bottom of the fixing plate 213, and a fan 215 fixedly connected to the output end of the back of the motor 214 through a coupling;The recovery assembly 22 includes two docking blocks 221 fixedly connected to the top of the cooling tank 211. The top of the left docking block 221 is fixedly connected to the overflow pipe 114, and the bottom of the docking block 221 is fixedly connected to a cooling pipe 222 extending into the cooling tank 211. The top of the right docking block 221 is fixedly connected to a discharge pipe 223, the other end of which extends into the hydraulic tank 111. Excess hydraulic oil is fed into the cooling pipe 222 through the overflow pipe 114, and then the fan 215 driven by the motor 214 draws external airflow into the cooling tank 211 to cool the hydraulic system. The hydraulic oil in the cooling pipe 222 is cooled down. Excess hydraulic oil enters the overflow pipe 114, and then enters the docking block 221 through the overflow pipe 114, and then enters the interior of the cooling pipe 222. Then the motor 214 is started, and the motor 214 drives the fan 215 to rotate. The rotation of the fan 215 draws external air into the cooling box 211. The airflow cools the hydraulic oil inside the cooling pipe 222 and returns it to the hydraulic box 111 through the discharge pipe 223 to prevent the backflowing hydraulic oil from cavitating due to excessive temperature. The locking component 31 includes components fixedly connected to the hydraulic box 111. The top of the hydraulic tank 111 has a rotating platform 312, inside which a sealing cover 311 is rotatably connected. A locking block 313 is fixedly connected to the top of the hydraulic tank 111, and a locking rod 314 is slidably connected to the inner wall of the locking block 313. The locking rod 314 is snapped into the sealing cover 311, and an air-filled pad 315 is fixedly connected to the bottom of the sealing cover 311. The filter assembly 32 includes a locking groove 324 on the top of the hydraulic tank 111, and a support frame 321 is fixedly connected to the inner wall of the hydraulic tank 111. A limit rod 325 is inserted into the inner wall of the locking groove 324, and a connecting ring 323 is fixedly connected to the top of the limit rod 325. The top of the connecting ring 323 contacts the bottom of the air-filled pad 315. When the sealing cap 311 is placed over the connecting ring 323, the air cushion 315 is compressed and deformed, filling the gap between the connecting ring 323 and the sealing cap 311. When hydraulic oil enters the hydraulic tank 111, it first passes through the filter screen 322, which filters impurities from the hydraulic oil, ensuring its purity. To replace the filter screen 322, simply rotate the connecting ring 323. This rotation causes the limiting rod 325 to rotate, disengaging it from the locking groove 324. Then, pull the connecting ring 323 upwards to remove the filter screen 322. The operation is simple and requires no additional fixing.

[0044] A specific application of this embodiment is as follows: In use, the suction pump 112 is first started, and then the hydraulic oil inside the hydraulic tank 111 is drawn into the suction pump 112 through the suction pipe 113. The hydraulic oil is then transported through the suction pump 112 to the delivery pipe 123, and then through the delivery pipe 123 to the connecting box 124. The hydraulic oil is then delivered to the designated location through the connecting box 124. When the suction pump 112 draws in hydraulic oil, some hydraulic oil enters the overflow pipe 114, and then through the overflow pipe 114 into the docking block 221 and into the cooling pipe 222. Then, the motor 214 is started, driving the fan 215 to rotate. The rotation of the fan 215 draws external airflow into the cooling tank 211, and the airflow cools the hydraulic oil inside the cooling pipe 222. The hydraulic oil re-enters the hydraulic tank 111 through the discharge pipe 223 to prevent cavitation caused by excessively high temperature in the backflowing hydraulic oil. When the hydraulic oil in the hydraulic tank 111 is insufficient, push the locking rod 314 to the right to disengage it from the barb of the sealing cover 311. Then lift the sealing cover 311 and start pouring hydraulic oil into the hydraulic tank 111. When the hydraulic oil enters the hydraulic tank 111, it will first pass through the filter screen 322 to filter impurities in the hydraulic oil and ensure its purity. When the filter screen 322 needs to be replaced, simply rotate the connecting ring 323. The rotation of the connecting ring 323 will drive the limit rod 325 to rotate, turning it out of the locking groove 324. Then pull the connecting ring 323 upward to remove the filter screen 322. The operation is simple and requires no additional fixing.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic equipment of a hybrid NC machine tool of turning and milling, characterized by, include: Hydraulic unit (1), which is used to store hydraulic oil; The hydraulic unit (1) includes a suction assembly (11), which includes a hydraulic tank (111). A suction pump (112) is fixedly connected to the top of the hydraulic tank (111), and a suction pipe (113) is fixedly connected to the inner wall of the hydraulic tank (111). The right side of the suction pipe (113) is fixedly connected to the output end of the suction pump (112), and an overflow pipe (114) is fixedly connected to the top output end of the suction pump (112). Cooling section (2), which is installed above hydraulic section (1), is used to cool hydraulic oil; The cooling section (2) includes a cooling assembly (21) for cooling the hydraulic oil; as well as A recovery assembly (22) is mounted above the cooling assembly (21) and is used to return excess hydraulic oil to the suction assembly (11). In this process, after excess hydraulic oil enters the recovery component (22), the hydraulic oil is cooled by the cooling component (21). The cooling assembly (21) includes a cooling box (211) fixedly connected to the top of the hydraulic tank (111), a filter grid (212) fixedly connected to the back of the cooling box (211), a fixing plate (213) fixedly connected to the inner wall of the cooling box (211), a motor (214) fixedly connected to the bottom of the fixing plate (213), and a fan (215) fixedly connected to the output end of the motor (214) via a coupling. The recovery assembly (22) includes a docking block (221) fixedly connected to the top of the cooling tank (211). There are two docking blocks (221). The top of the docking block (221) on the left is fixedly connected to the overflow pipe (114), and the bottom of the docking block (221) is fixedly connected to the cooling pipe (222). The bottom of the cooling pipe (222) extends into the interior of the cooling tank (211). The top of the docking block (221) on the right is fixedly connected to the discharge pipe (223), and the other end of the discharge pipe (223) extends into the interior of the hydraulic tank (111). Excess hydraulic oil is fed into the cooling pipe (222) through the overflow pipe (114), and then the fan (215) driven by the motor (214) draws external airflow into the cooling box (211) to cool the hydraulic oil in the cooling pipe (222); and The filtering part (3) is installed inside the hydraulic part (1) and is used to filter the hydraulic oil. When hydraulic oil is drawn from the hydraulic section (1), some hydraulic oil will overflow, and then the overflowing hydraulic oil will be cooled by the cooling section (2).

2. The hydraulic equipment of the turn-milling combined numerical control machine tool according to claim 1, characterized in that, The suction assembly (11) is used to suction hydraulic oil; and A conveying assembly (12) is installed on the right side of the suction assembly (11) and is used to convey hydraulic oil. In this process, after the hydraulic oil is extracted by the suction component (11), it is transported into the inside of the conveying component (12) and sent to the designated area.

3. The hydraulic equipment of a milling-turning composite CNC machine tool according to claim 2, characterized in that, The rejection section (3) includes a locking component (31) for closing the injection port; and A filter assembly (32) is installed inside the suction assembly (11) and is used to filter hydraulic oil. When injecting hydraulic oil, it is filtered by a filter assembly (32), and after injection, the filter assembly (32) is sealed by a locking assembly (31).

4. The hydraulic equipment of a milling-turning composite CNC machine tool according to claim 3, characterized in that, The delivery assembly (12) includes a one-way valve (121) fixedly connected to the output end of the suction pump (112) on the right side. A delivery pipe (123) is fixedly connected to the right side of the one-way valve (121). A pressure gauge (122) is fixedly connected to the top of the delivery pipe (123). A connection box (124) is fixedly connected to the right side of the delivery pipe (123). Hydraulic oil inside the hydraulic tank (111) is fed into the delivery pipe (123) by the suction pump (112) and the suction pipe (113), and then sent into the connection box (124) through the delivery pipe (123).

5. The hydraulic equipment of a milling-turning composite CNC machine tool according to claim 4, characterized in that, The locking assembly (31) includes a rotating platform (312) fixedly connected to the top of the hydraulic tank (111), a sealing cover (311) rotatably connected inside the rotating platform (312), a locking block (313) fixedly connected to the top of the hydraulic tank (111), a locking rod (314) slidably connected to the inner wall of the locking block (313), the locking rod (314) being snapped into the sealing cover (311), and an air cushion (315) fixedly connected to the bottom of the sealing cover (311). The filter assembly (32) includes a locking groove (324) on the top of the hydraulic tank (111), a support frame (321) is fixedly connected to the inner wall of the hydraulic tank (111), a limit rod (325) is inserted into the inner wall of the locking groove (324), a connecting ring (323) is fixedly connected to the top of the limit rod (325), and the top of the connecting ring (323) is in contact with the bottom of the air cushion (315); When the sealing cap (311) is placed over the connecting ring (323), the air cushion (315) is compressed and deformed, filling the gap between the connecting ring (323) and the sealing cap (311).

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