Economical cooling device for linear motor of electric spark machine

Abstract

An economical electric spark machine linear motor cooling device comprises a linear motor, a machining oil tank, a dirty oil tank, a clear oil tank, a cooling oil tank, a circulating pump assembly, a cooling pump assembly and a heat exchange assembly which are matched with one another. The circulating pump assembly filters and cools dirty oil conveyed into the dirty oil tank from the machining oil tank and then conveys the dirty oil to the clean oil tank. The heat exchange assembly is a spiral pipe made of a heat conduction material and is arranged in the clean oil tank; the cooling pump assembly is communicated with the spiral pipe, cooling liquid is conveyed into the spiral pipe to be cooled in the clean oil tank and then conveyed into the linear motor to be cooled, the cooling liquid is conveyed back to the cooling oil tank, cost is low, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to a cooling device, and particularly to a linear motor cooling device for an economic electric discharge machining machine. Background Art

[0002] In the prior art, a linear motor is adopted as the shaft moving power source for an electric discharge machining machine. Due to the heat generated by the coil, it is necessary to cool the linear motor. The existing cooling methods are as Figure 1 Figure 2 shown, including a mutually cooperating linear motor A, a machining oil tank B, a waste oil tank C, a cleaning oil tank D, a cooling oil tank E, a circulation pump assembly F, a cooling pump assembly G, a heat exchange assembly H, and a liquid delivery pump assembly I. Among them, the circulation pump assembly F filters and cools the waste oil sent from the machining oil tank B to the waste oil tank C and then sends it to the cleaning oil tank D. The heat exchange assembly H is a heat exchanger, which is respectively communicated with the cooling pump assembly G and the liquid delivery pump assembly I. The cooling pump assembly sends the coolant to the heat exchanger, and the liquid delivery pump assembly sends the cooled and filtered oil into the heat exchanger. After the two perform heat exchange in the heat exchanger, the cooled coolant enters the linear motor to cool it and then returns to the cooling oil tank. The circuit is set as follows:

[0003] Circulation pump circuit: The oil discharged from the machining oil tank to the waste oil tank is sent to an oil temperature regulator for cooling and then filtered through a filter and sent to the cleaning oil tank.

[0004] Liquid delivery pump circuit: The filtered and cooled oil is sent to the machining oil tank for machining; and the filtered and cooled machining oil is sent to the heat exchanger to cool the coolant.

[0005] Cooling pump circuit: The coolant in the coolant tank is sent to the heat exchanger for heat exchange and cooling and then sent to the linear motor for motor cooling. Finally, the coolant returns to the coolant tank.

[0006] The prior art uses a heat exchanger for cooling, which has a high price and is difficult to remove impurities inside the heat exchanger. The impurities enter the cooling pump (gear pump), resulting in abnormal noise problems of the cooling pump. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a cooling mechanism with low cost and simple structure, which can overcome the problems of the prior art.

[0008] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0009] Economical linear motor cooling device for electric discharge machining machine, comprising a linear motor, a machining fuel tank, a waste fuel tank, a cleaning fuel tank, a cooling fuel tank, a circulation pump assembly, a cooling pump assembly and a heat exchange assembly which cooperate with each other; wherein, the circulation pump assembly filters and cools the waste oil sent from the machining fuel tank to the waste fuel tank and then sends it to the cleaning fuel tank; the heat exchange assembly is a spiral tube made of heat-conducting material, which is arranged in the cleaning fuel tank; the cooling pump assembly is communicated with the spiral tube, sends the coolant to the spiral tube to be cooled in the cleaning fuel tank and then sends it into the linear motor for cooling, and then sends the coolant back to the cooling fuel tank.

[0010] Furthermore, the circulation pump assembly comprises a circulation pump, an oil temperature control machine and a filter which cooperate and are connected with each other; wherein, the circulation pump extracts the waste oil sent from the machining fuel tank to the waste fuel tank, sends it to the oil temperature control machine for cooling and then filters it through the filter and sends it into the cleaning fuel tank.

[0011] Furthermore, the heat exchange assembly is a spring-type spiral tube made of copper material, one end of which is communicated with the cooling pump of the cooling pump assembly, the other end is communicated with the linear motor, and the spring-type spiral tube is arranged in the cleaning fuel tank to cool the coolant in it with the cooled cleaning oil.

[0012] Furthermore, the waste fuel tank and the cleaning fuel tank are integrally arranged and separated by a partition in the middle. The processed waste oil in the machining fuel tank is discharged into the waste fuel tank through a drain pipe, and a liquid delivery pump sends the oil in the cleaning fuel tank into the machining fuel tank for machining to realize the recycling of the oil.

[0013] After adopting the above scheme, the utility model adopts a spiral tube cooling structure with good heat conduction performance, which has a simple structure and greatly reduces the cost, and can overcome the problems in the prior art. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the prior art of the utility model;

[0015] Figure 2 is a schematic circuit diagram of the prior art of the utility model;

[0016] Figure 3 is a schematic structural diagram of the utility model;

[0017] Figure 4 is a schematic circuit diagram of the utility model. Detailed Embodiment

[0018] In order to further explain the technical solution of the utility model, the utility model will be elaborated in detail below through specific embodiments.

[0019] Such as Figures 3-4As shown in the figure, the linear motor cooling device of an economical electric discharge machining machine includes a linear motor 1, a machining fuel tank 2, a waste fuel tank 3, a clean fuel tank 4, a cooling fuel tank 5, a circulation pump assembly 6, a cooling pump assembly 7, and a heat exchange assembly 8 that cooperate with each other; among them, the circulation pump assembly 8 filters and cools the waste oil sent from the machining fuel tank 2 to the waste fuel tank 3 and then sends it to the clean fuel tank 4; the heat exchange assembly 8 is a spiral tube made of heat-conducting material, which is arranged in the clean fuel tank 4; the cooling pump assembly 7 is connected to the spiral tube, sends the coolant to the spiral tube to be cooled in the clean fuel tank 4, and then sends it into the linear motor 1 for cooling and then sends the coolant back to the cooling fuel tank 5.

[0020] In a specific embodiment, the circulation pump assembly 6 includes a circulation pump 61, an oil temperature control machine 62, and a filter 63 that cooperate and are connected to each other; among them, the circulation pump 61 extracts the waste oil sent from the machining fuel tank 2 to the waste fuel tank 3 and sends it into the oil temperature control machine 62 for cooling and then filters it through the filter 63 and sends it into the clean fuel tank 4.

[0021] Furthermore, the heat exchange assembly 8 is a spring-type spiral tube made of copper. One end of it is connected to the cooling pump of the cooling pump assembly 6, and the other end is connected to the linear motor 1. The spring-type spiral tube is arranged in the clean fuel tank 4, and the coolant inside it is cooled by the cooled clean oil.

[0022] Furthermore, the waste fuel tank 3 and the clean fuel tank 4 are integrally arranged and separated by a partition 9 in the middle. The processed waste oil in the machining fuel tank 2 is discharged into the waste fuel tank 3 through a drain pipe, and a liquid delivery pump 10 sends the oil in the clean fuel tank 4 into the machining fuel tank 2 for machining to realize the recycling of the oil.

[0023] The circuit during its operation is as follows:

[0024] Circulation pump circuit: Send the machining oil discharged from the machining fuel tank to the filter for filtration; and send the machining oil in the storage fuel tank to the oil temperature adjustment machine for cooling and circulation.

[0025] Liquid delivery pump circuit: Send the filtered and cooled machining oil to the machining fuel tank for machining;

[0026] Cooling pump circuit: Send the coolant in the coolant tank to the spiral tube and then to the shaft linear motor for motor cooling. Finally, the coolant returns to the coolant tank.

[0027] The utility model adopts a spiral tube cooling structure with good heat conduction performance, which has a simple structure and greatly reduces the cost, and can overcome the problems in the prior art.

[0028] The foregoing description illustrates and describes the preferred embodiments of the present utility model. As previously mentioned, it should be understood that the present utility model is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in the relevant field. Any alterations and changes made by those skilled in the art without departing from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. The linear motor cooling device of an economic electric discharge machining machine is characterized in that: It includes a mutually cooperating linear motor, a processing fuel tank, a waste fuel tank, a cleaning fuel tank, a cooling fuel tank, a circulation pump assembly, a cooling pump assembly and a heat exchange assembly; wherein, the circulation pump assembly filters and cools the waste oil sent from the processing fuel tank to the waste fuel tank and then sends it to the cleaning fuel tank; the heat exchange assembly is a spiral tube made of heat-conducting material and is arranged in the cleaning fuel tank; the cooling pump assembly is communicated with the spiral tube, sends the coolant to the spiral tube, cools it in the cleaning fuel tank, then sends it into the linear motor for cooling, and then sends the coolant back to the cooling fuel tank.

2. The linear motor cooling device of the economical electric discharge machining machine according to claim 1, wherein: The circulation pump assembly includes a mutually cooperating and connected circulation pump, an oil temperature regulator and a filter; wherein, the circulation pump extracts the waste oil sent from the processing fuel tank to the waste fuel tank, sends it to the oil temperature regulator for cooling, and then filters it through the filter and sends it into the cleaning fuel tank.

3. The linear motor cooling device of the economical electric discharge machining machine according to claim 1 or 2, characterized in that: The heat exchange assembly is a spring-type spiral tube made of copper. One end of it is communicated with the cooling pump of the cooling pump assembly, and the other end is communicated with the linear motor. The spring-type spiral tube is arranged in the cleaning fuel tank to cool the coolant inside by the cooled cleaning oil.

4. The linear motor cooling device of the economical electric discharge machining machine according to claim 3, characterized in that: The waste fuel tank and the cleaning fuel tank are integrally arranged and separated by a partition in the middle. The processed waste oil in the processing fuel tank is discharged into the waste fuel tank through a drain pipe, and the liquid delivery pump sends the oil in the cleaning fuel tank into the processing fuel tank for processing to realize the recycling of the oil.

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