Complete machine cooling system of numerical control electric spark forming machine tool

Abstract

The invention discloses a numerical control electric spark forming machine tool complete machine cooling system which comprises an oil pool, a heat exchanger, a water cooling machine, an oil well pump, a filter, a filtering part and a non-filtering part. The cold source side of the heat exchanger is communicated with the water cooler through a pipeline; the oil well pump is communicated with the oil pool; the oil well pump, the filter, the filtering part and the oil pool are sequentially connected and communicated through pipelines; the filter is communicated with the heat source side of the heat exchanger through a pipeline; the heat source side of the heat exchanger is communicated with the oil pool; and the non-filtering part is communicated with the oil well pump through a pipeline. Only one part of parts of the machine tool are filtered, accurate filtering is achieved, the cooling efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool cooling, and more particularly to a complete cooling system for a numerically controlled electric spark forming machine tool. Background Art

[0002] In order to reduce the high temperature generated during the machining process, protect the electrode and workpiece, and ensure the machining quality and equipment life, the CNC EDM machine tool needs to be cooled.

[0003] However, at present, the cooling of heat-generating parts of machine tools such as spark fluid, motor, slide C-axis, etc. is mostly done directly by using oil through an oil cooler. In this way, all the oil in the machine tool will pass through a filtering device, and then the filtered oil will be recycled. This will cause problems such as over-filtration and large cooling losses. The cooling of electrical cabinets is concentrated on conventional cooling methods such as fans or cabinet air conditioners. There is a large-scale interaction between the air inside the electrical cabinet and the external air, which can easily make the electrical cabinet affected by the room temperature and the external air environment, resulting in low cooling effect and high energy consumption.

[0004] Therefore, providing a cooling system for a CNC EDM machine tool is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, the present invention provides a cooling system for a CNC electric spark forming machine tool to at least solve one of the above-mentioned technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A complete cooling system for a CNC electric spark forming machine tool comprises an oil pool, a heat exchanger, a water cooler, an oil pump, a filter, a filtering component and a non-filtering component, wherein the heat exchanger is located inside the oil pool; the cold source side of the heat exchanger is connected to the water cooler through a pipeline, and the oil pump is connected to the oil pool; the oil pump, the filter, the filtering component and the oil pool are connected to each other through pipelines in sequence; the filter is connected to the heat source side of the heat exchanger through a pipeline, and the heat source side of the heat exchanger is connected to the oil pool; the non-filtering component is connected to the oil pump through a pipeline.

[0008] By adopting the above technical solution, the beneficial effects of the present invention are:

[0009] Only a part of the machine tool components are filtered to achieve precise filtration, improve cooling efficiency and reduce energy consumption.

[0010] Furthermore, the filtering component includes a feed motor, a slide C-axis and a workpiece cleaning pipe, the feed motor is connected to the filter through a first pipe, a first solenoid valve is installed on the first pipe, and the feed motor is connected to the oil pool through a second pipe; the slide C-axis is connected to the filter through a third pipe, a second solenoid valve is installed on the third pipe, and the slide C-axis is connected to the oil pool through a fourth pipe; both ends of the workpiece cleaning pipe are respectively connected to the filter and the non-filtering component, and a valve is installed on the workpiece cleaning pipe.

[0011] Furthermore, the non-filtering component is a lifting oil tank, and the lifting oil tank is connected to the oil pump through a fifth pipeline, and a third solenoid valve is installed on the fifth pipeline.

[0012] Furthermore, the water cooler is connected to a condenser inside the electrical cabinet via a cooling circulation pipeline.

[0013] Furthermore, the electrical cabinet includes a cabinet body, a cabinet door and a box body, the cabinet door is hinged to the cabinet body, and a sealing strip is provided between the cabinet door and the cabinet body; the box body is fixed on the inner side of the cabinet door; the bottom of the box body has two tiny holes; the condenser and the centrifugal fan are both installed inside the box body.

[0014] The beneficial effect of adopting the above-mentioned further technical solution is that the electrical cabinet is fully sealed, with only two tiny holes designed at the bottom of the box body inside the cabinet door, which reduces the possibility of the electrical cabinet being affected by the external air environment, improves cooling efficiency, and reduces energy consumption.

[0015] Furthermore, the diameters of the first pipeline, the third pipeline and the workpiece cleaning pipeline are all larger than the diameter of the pipeline connecting the filter and the heat source side of the heat exchanger.

[0016] The beneficial effect of adopting the above further technical solution is that a small part of the oil flows back to the oil pool through the heat exchanger, and most of the oil flows through the filter component to cool the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 The accompanying drawing is a flow chart of a complete cooling system for a CNC EDM machine tool provided by the present invention;

[0019] Figure 2 The accompanying drawing is a schematic structural diagram of a CNC electric spark forming machine tool provided by the present invention;

[0020] Figure 3 The accompanying drawing is a schematic structural diagram of a complete cooling system for a CNC EDM machine tool provided by the present invention;

[0021] Figure 4 The accompanying drawing is a schematic diagram of the structure of the electrical cabinet provided by the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0023] like Figure 1-4 As shown, the embodiment of the present invention discloses a complete cooling system for a CNC EDM forming machine tool, including an oil pool 1, a heat exchanger 2, a water cooler 3, an oil pump 4, a filter 5, a filtering component and a non-filtering component, wherein the heat exchanger 2 is located inside the oil pool 1; the cold source side of the heat exchanger 2 is connected to the water cooler 3 through a pipeline, the oil pump 4 is connected to the oil pool 1, and the medium of the water cooler 3 uses water with a large specific heat capacity instead of oil; the oil pump 4, the filter 5, the filtering component and the oil pool 1 are connected to each other through pipelines in sequence; the filter 5 is connected to the heat source side of the heat exchanger 2 through a pipeline, and the heat source side of the heat exchanger 2 is connected to the oil pool 1; the non-filtering component is connected to the oil pump 4 through a pipeline. The present invention only filters a part of the machine tool components to achieve precise filtering, improve cooling efficiency, and reduce energy consumption.

[0024] Specifically, the filtering component includes a feed motor 6, a slide C-axis 7 and a workpiece cleaning pipe 8. The feed motor 6 is connected to the filter 5 through a first pipe, a first solenoid valve 9 is installed on the first pipe, and the feed motor 6 is connected to the oil pool 1 through a second pipe; the slide C-axis 7 is connected to the filter 5 through a third pipe, a second solenoid valve 10 is installed on the third pipe, and the slide C-axis 7 is connected to the oil pool 1 through a fourth pipe; both ends of the workpiece cleaning pipe 8 are respectively connected to the filter 5 and the non-filtering components, and a valve is installed on the workpiece cleaning pipe 8.

[0025] Specifically, the non-filtering component is the lifting oil tank 11, which is connected to the oil pump 4 through the fifth pipe. The third solenoid valve 101 is installed on the fifth pipe. The oil inside the oil pool 1 is directly pumped by the oil pump 4 through a thick pipe to the lifting oil tank 11 without passing through the filter 5, and enters the cooling part of the feed motor 6, the cooling part of the slide C axis 7 and the workpiece flushing part through the filter 5, thereby achieving precise filtration and extending the service life of the filter.

[0026] Specifically, the water cooler 3 is connected to the condenser 13 inside the electrical cabinet 12 through a cooling circulation pipeline.

[0027] Specifically, the electrical cabinet 12 includes a cabinet body 121, a cabinet door 122 and a box body 123. The cabinet door 122 is hinged to the cabinet body 121, and a sealing strip 124 is provided between the cabinet door 122 and the cabinet body 121. The box body 123 is fixed to the inner side of the cabinet door 122. The bottom of the box body 123 has two tiny holes 1231. The condenser 13 and the centrifugal fan 14 are both installed inside the box body 123. The electrical cabinet 12 of the present invention adopts a fully sealed manner, and only two tiny holes 1231 are designed at the bottom of the box body 123 inside the cabinet door 122, so as to reduce the possibility that the electrical cabinet 12 is affected by the external air environment, improve the cooling efficiency, and reduce energy consumption.

[0028] Of course, a temperature sensor and a controller may be installed inside the electrical cabinet 12, and the start and stop of the centrifugal fan may be adjusted in real time according to the temperature of the electrical cabinet 12 to reduce energy consumption.

[0029] Specifically, the diameters of the first pipeline, the third pipeline and the workpiece cleaning pipeline 8 are all larger than the diameter of the connecting pipeline between the filter 5 and the heat source side of the heat exchanger 2, so that a small part of the oil flows back to the oil pool 1 through the heat exchanger 2, and most of the oil flows through the filter component to cool the machine tool.

[0030] The working principle of the present invention is:

[0031] Oil is injected into the oil pool 1 to cover the heat exchanger 2 and reach the required liquid level. The water cooler 3 injects cooling water into the condenser 13 in the electrical cabinet 12 and the cold source side of the heat exchanger 2. When the machine tool is just started and has not yet processed parts, the first solenoid valve 9, the second solenoid valve 10, the third solenoid valve 101 and the valve are all in a power-off state, and the oil pump 4 starts to work. The oil in the oil pool 1 directly flows to the heat exchanger 2 through the filter 5 and then returns to the oil pool 1, so that the oil in the oil pool 1 flows, effectively improving the cooling efficiency of the oil. Before the machine tool starts to process parts, the third solenoid valve 101 is turned off. The solenoid valve 101 is energized, and the oil pump 4 directly pumps the oil in the oil pool 1 into the lifting oil tank 11. After the oil reaches the specified height, the machine tool starts to process parts. The first solenoid valve 9 and the second solenoid valve 10 are energized, and the cooling oil passing through the filter 5 is pumped into the heat exchanger 2, the feed motor 6, the slide C axis 7 and the workpiece cleaning pipeline 8, so as to realize the cooling of the feed motor 6, the slide C axis 7 and the lifting oil tank 11 on the heat source side. At the same time, the cold source side of the heat exchanger 2 exchanges heat with the oil flowing back to the oil pool 1 on the hot source side, so as to further realize the cooling of the oil on the heat source side.

[0032] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0033] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A complete cooling system for a CNC EDM machine tool, characterized in that: It includes an oil pool, a heat exchanger, a water cooler, an oil pump, a filter, a filtering component and a non-filtering component, wherein the heat exchanger is located inside the oil pool; the cold source side of the heat exchanger is connected to the water cooler through a pipeline, and the oil pump is connected to the oil pool; the oil pump, the filter, the filtering component and the oil pool are connected to each other through pipelines in sequence; the filter is connected to the heat source side of the heat exchanger through a pipeline, and the heat source side of the heat exchanger is connected to the oil pool; the non-filtering component is connected to the oil pump through a pipeline.

2. The cooling system of a CNC EDM machine tool according to claim 1, characterized in that: The filtering component includes a feed motor, a slide C axis and a workpiece cleaning pipeline. The feed motor is connected to the filter through a first pipeline, a first solenoid valve is installed on the first pipeline, and the feed motor is connected to the oil pool through a second pipeline; the slide C axis is connected to the filter through a third pipeline, a second solenoid valve is installed on the third pipeline, and the slide C axis is connected to the oil pool through a fourth pipeline; both ends of the workpiece cleaning pipeline are respectively connected to the filter and the non-filtering component, and a valve is installed on the workpiece cleaning pipeline.

3. A complete cooling system for a CNC EDM machine tool according to claim 1 or 2, characterized in that: The non-filtering component is a lifting oil tank, and the lifting oil tank is connected to the oil pump through a fifth pipeline, and a third solenoid valve is installed on the fifth pipeline.

4. The cooling system for a CNC EDM machine tool according to claim 1, characterized in that: The water cooler is connected to the condenser inside the electrical cabinet through a cooling circulation pipeline.

5. The cooling system for a CNC EDM machine tool according to claim 4, characterized in that: The electrical cabinet comprises a cabinet body, a cabinet door and a box body, wherein the cabinet door is hinged to the cabinet body, and a sealing strip is provided between the cabinet door and the cabinet body; the box body is fixed on the inner side of the cabinet door; the bottom of the box body has two tiny holes; the condenser and the centrifugal fan are both installed inside the box body.

6. The cooling system for a CNC EDM machine tool according to claim 2, characterized in that: The diameters of the first pipeline, the third pipeline and the workpiece cleaning pipeline are all larger than the diameter of the pipeline connecting the filter and the heat source side of the heat exchanger.

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