CN202021502U - A CNC machine tool water supply system - Google Patents

Abstract

The utility model provides a water supply system for a numerical control machine, which is used for supplying water for a spindle center and a cooling spray nozzle of the numerical control machine and comprises a first water tank, a first pump, a cooling spray nozzle, a second water tank, a second pump, a spindle center, an electromagnetic valve and a control device, wherein the input end of the first pump is communicated with the first water tank through a pipeline; the cooling spray nozzle and the second water tank are respectively communicated with the output end of the first pump through pipelines; the input end of the second pump is communicated with the second water tank through a pipeline; the spindle center is communicated with the output end of the second pump through a pipeline and a rotating joint; the electromagnetic valve is arranged on a pipeline and used for controlling the first pump to alternatively supply the water to the cooling spray nozzle and/or the second water tank; the control device is connected with the first pump, the second pump and the electromagnetic valve respectively; a filter screen is arranged between the water inlet side and the water outlet side of the second water tank; and the water supply system can prevent insufficient water pressure of the spindle center and improve the service life of the rotating joint.

Description

A CNC machine tool water supply system

technical field

The utility model relates to a numerical control machine tool water supply system.

Background technique

Referring to Fig. 1, the existing CNC machine tool water supply system is mainly used to supply water to the cooling nozzle 15 and the center of the main shaft 16, and the water output from the center of the main shaft 16 is mainly used for deep drilling. The dual function of extruding iron filings prevents damage to the drill bit. The existing water supply system is mainly composed of a water tank 11, a cooling pump 12 whose input end communicates with the water tank 11 through a pipeline, a cooling nozzle 15 and a rotary joint 14 that are respectively communicated with the output end of the cooling pump 12 through a pipeline, and a cooling pump that is arranged on the rotary joint 14 and the cooling pump. The filter 13 on the pipeline between 12, the swivel joint 14 is used for realizing the connection of pipeline and main shaft 16 centers.

The water supply system with the above-mentioned structure has the following disadvantages: 1. Since the filtration precision of the water tank 11 itself is generally not lower than 1mm, and the rotary joint requires the cooling fluid filtration precision to be below 20um, the use of a filter with a filtration degree of 20um will make the filter 13 easy to Blockage, resulting in insufficient coolant pressure; using a filter 13 larger than 20um will cause insufficient filtration of the machining coolant, resulting in damage to the rotary joint 14; 2. When the water outlet from the center of the spindle 16 and the cooling nozzle 15 are used at the same time, the water outlet from the center of the spindle 16 Insufficient pressure due to diversion, not enough to discharge iron filings.

Contents of the invention

The purpose of the utility model is to provide a CNC machine tool water supply system which can prevent insufficient water pressure in the center of the spindle and improve the service life of the rotary joint.

The purpose of this utility model is achieved through the following technical solutions:

A numerically controlled machine tool water supply system for supplying water to the spindle center and cooling nozzle of the numerically controlled machine tool, characterized in that it includes a first water tank, a first pump whose input end communicates with the first water tank through a pipeline, and a first pump connected to the first water tank through a pipeline respectively. The cooling nozzle connected to the output end and the second water tank, the second pump connected to the second water tank through the pipeline through the input end, the main shaft center communicated with the output end of the second pump through the pipeline and the rotary joint, set on the pipeline for controlling the first The pump selectively supplies water to the cooling spray head and/or the electromagnetic valve of the second water tank, and the control device connected to the first and second pumps and the electromagnetic valve respectively, and the water inlet side and the water outlet side of the second water tank are provided with Filter.

Further, a pressure switch is provided on the pipeline between the filter and the center of the main shaft, and the pressure switch is connected to the control device for transmitting pressure information to the control device, and the control device can control the working state of the second pump according to the pressure information.

Further, a liquid level switch is provided in the second water tank, and the liquid level switch is connected to the control device for transmitting liquid level information to the control device, and the control device can control the first pump and/or the electromagnetic valve according to the liquid level information. working status.

Further, the utility model also includes a filter arranged on the pipeline between the second pump and the center of the main shaft, and the filtering accuracy of the filter is higher than that of the filter screen of the second water tank.

The filtration precision of the filter screen is 20 μm, and the filtration precision of the filter is 10 μm.

The utility model has the following beneficial effects:

1) Set a filter with high filtration precision in the second water tank, and set it as the second pump for independent water supply in the center of the main shaft, so that the water supply pressure in the center of the main shaft can be increased while ensuring the filtration accuracy of the coolant, and the use of the rotary joint can be extended 2) Setting a liquid level switch in the second water tank can realize the automatic control of the liquid level of the second water tank to ensure the normal water supply of the second water tank; 3) Setting a pressure switch can detect the pipeline pressure, so that when the pressure exceeds the rated value Stop the second pump in time, which can prevent the problem of wrong tool installation or pipeline blockage, and improve the safety of the utility model; 4) the filter on the pipeline between the second pump and the center of the main shaft, and the filter's The filtration precision is higher than that of the filter screen of the second water tank, which can further improve the filtration precision of the coolant. Improve the service life of the rotary joint.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a structural schematic diagram of a numerically controlled machine tool water supply system provided by the prior art.

Fig. 2 is a structural schematic diagram of the utility model.

Detailed ways

Referring to Fig. 2, a water supply system for numerically controlled machine tools is used to supply water to the center of the spindle 6 and the cooling nozzle 5 of the numerically controlled machine tool, comprising a first water tank 1, a first pump 2 whose input end communicates with the first water tank 1 through a pipeline, The cooling nozzle 5 and the second water tank 7 communicated with the output end of the first pump 2 through pipelines respectively, the second pump 10 whose input end communicates with the second water tank 7 through pipelines, and the output end of the second pump 10 through pipelines and rotary joints 4 The center of the connected main shaft 6, the electromagnetic valves 51 and 73 arranged on the pipeline for controlling the first pump 2 to selectively supply water to the cooling nozzle 5 and/or the second water tank 7, are arranged between the second pump 10 and the center of the main shaft 6 The filter 3 on the intermediate pipeline, and the control device connected with the first and second pumps 2, 10 and solenoid valves 51, 73 respectively.

The second water tank 7 is provided with a filter screen 71 between the water inlet side and the water outlet side. The filtration accuracy of the filter screen 71 is 20 μm, and the filtration accuracy of the filter 3 is 10 μm. On the pipeline between the filter 3 device and the center of the main shaft 6 A pressure switch 9 and a pressure gauge 8 are provided. The pressure switch 9 is connected to the control device for transmitting pressure information to the control device. The control device can control the working state of the second pump 10 according to the pressure information. The second water tank 7 is provided with a liquid Level switch 72. The liquid level switch 72 is connected to the control device for transmitting liquid level information to the control device. The control device can control the working state of the first pump 2 and/or the solenoid valves 51 and 73 according to the liquid level information.

The specific working method is: the cooling liquid passes through the first pump 2 from the first water tank 1 to the second water tank 7, and is filtered by the filter screen 71, and the second pump 10 pumps the filtered cooling liquid out of the second water tank 7, and then passes through The filter 3 filters through the rotary joint 4 to the center of the main shaft 6 . The control device controls the switches of the first pump 2 and the solenoid valves 51 and 73 according to the liquid level information of the second water tank 7 detected by the liquid level switch 72. When the liquid level is low, the first pump 2 and the solenoid valve 73 are opened, and when the liquid level is high, Close the first pump 2 and the electromagnetic valve 73; the control device controls the second pump 10 according to the pressure information in the pipe detected by the pressure switch 9. If the pressure in the pipe is too high and the pipeline fails, the second pump 10 is controlled to stop working.

The above is only a preferred embodiment of the utility model, so the scope of implementation of the utility model cannot be limited with this, that is, equivalent changes and modifications made according to the patent scope of the utility model and the content of the specification should still be carried out. It belongs to the scope covered by the utility model patent.

Claims (5)

1. A numerically controlled machine tool water supply system is used to supply water to the spindle center and the cooling nozzle of the numerically controlled machine tool, and is characterized in that: it comprises the first water tank, the first pump whose input end is communicated with the first water tank through pipelines, and the first pump connected with the first water tank through pipelines respectively. A cooling nozzle connected to the output end of the pump and the second water tank, a second pump whose input end communicates with the second water tank through a pipeline, a main shaft center that communicates with the output end of the second pump through a pipeline and a rotary joint, and is arranged on the pipeline for control The solenoid valve for the first pump to selectively supply water to the cooling spray head and/or the second water tank, and the control device respectively connected to the first, second pump and solenoid valve, between the water inlet side and the water outlet side of the second water tank A filter is provided. 2. A CNC machine tool water supply system according to claim 1, characterized in that: a pressure switch is provided on the pipeline between the filter and the center of the spindle, and the pressure switch is connected to the control device for transmitting pressure to the control device The control device can control the working state of the second pump according to the pressure information. 3. A water supply system for numerical control machine tools according to claim 1, characterized in that: a liquid level switch is arranged in the second water tank, and the liquid level switch is connected to the control device for transmitting liquid level information to the control device, and the control device The device can control the working state of the first pump and/or the solenoid valve according to the liquid level information. 4. A numerically controlled machine tool water supply system according to claim 1, characterized in that: it also includes a filter arranged on the pipeline between the second pump and the center of the main shaft, the filtering accuracy of the filter is higher than that of the second water tank The filtering accuracy of the net. 5. A water supply system for numerically controlled machine tools according to claim 4, characterized in that: the filtration accuracy of the filter is 20 μm, and the filtration accuracy of the filter is 10 μm.

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