TW201348906A - Active type temperature compensation control system for a computer processing machine spindle - Google Patents

Abstract

The present invention relates to an active type temperature compensation control system for a computer processing machine spindle. In particular, a spindle rotation speed signal transmitted by the PLC of a computer processing machine can be detected, and compared with the preset temperature parameters via the active type temperature compensation control circuit of the central processing unit (CPU) in a control circuit unit to give the corresponding temperature with the variation of the rotation speed of the computer processing machine spindle. In addition to increase the processing efficiency and reduce malfunction, the system allows the spindle to remain at the setting origin in processing under circumstances of thermal expansion and contraction in order to maintain the set processing precision of the design of this active type temperature compensation control system, which possesses novelty, inventive step, and is available for industry application.

Description

Computer processing machinery spindle active temperature compensation control system

The invention relates to an active temperature compensation control system for a computer processing machine spindle, in particular to an active temperature compensation control in a central processing unit (CPU) capable of detecting a spindle speed signal transmitted by a computer processing machine PLC through a control circuit unit. The circuit detects and compares the spindle speed signal with the preset temperature value parameter, and can give a corresponding temperature according to the change of the spindle speed of the computer processing machine, in addition to improving the machining efficiency and reducing the fault, the spindle can also be The active temperature compensation control system design maintains the set machining origin during thermal expansion and contraction to maintain the set machining accuracy.

According to the conventional spindle processing temperature control of computer processing machinery, the cooling device is controlled by a constant temperature control circuit to provide a constant machining temperature of the spindle, that is, the cooling device is continuously operated regardless of whether the spindle speed is high or low. In order to achieve a constant processing temperature of the spindle, and some processing plants do not affect the processing temperature of the spindle due to excessive room temperature, it also costs a lot of money to install an air conditioning system in the factory, in addition to the cooling device that controls the spindle constant temperature. In addition to the state of power consumption, the installed air-conditioning system will also generate huge expenditures on electricity bills. In the current situation of both oil and electricity, the cost of expenditure will be greatly increased.

Moreover, in general, when the rotational speed of the main shaft is high, it will generate a high processing temperature. When the temperature is too high, in addition to affecting the processing efficiency, the main shaft will be inflated and the machining origin will be offset, so that the machining accuracy is lowered. When the spindle speed is low, it will produce lower processing. Temperature, therefore, when the spindle processing temperature is high, the cooling device is required to lower the coolant temperature to reduce the processing temperature of the spindle, and when the spindle processing temperature is low, there is no need to increase the burden of the cooler device or shut down. The cooling device can make the spindle get a lower working temperature, which will improve the processing efficiency, save energy and improve machining accuracy.

The present inventors have in view of the practical difficulties of the spindle processing temperature control of the above-mentioned conventional computer processing machinery and the lack of improvement, and hope to provide a breakthrough design to enhance the practical effect, which is a painstaking research and design group system. The company has been engaged in the professional technical knowledge and practical experience of related product design and production for many years, and the results obtained from the research and design, finally developed a computer processing mechanical spindle active temperature compensation control system to provide users.

The main purpose of the invention is to detect the spindle speed signal transmitted by the computer processing machine PLC by the active temperature compensation control system, and the spindle speed signal is controlled by the active temperature compensation control circuit in the central processing unit (CPU) of the control circuit unit. The preset temperature value parameters are compared, and the corresponding temperature can be given according to the change of the rotational speed of the computer processing machine spindle, in addition to improving the processing efficiency, reducing the failure and saving the electricity cost, the spindle can also be thermally expanded and contracted. The set machining origin is maintained at all times to maintain the set machining accuracy.

The main purpose of the invention is to detect the spindle speed signal transmitted by the computer processing machine PLC by the active temperature compensation control system, and the spindle speed signal is controlled by the active temperature compensation control circuit in the central processing unit (CPU) of the control circuit unit. The preset temperature value parameters are compared, and the corresponding temperature can be given according to the change of the rotational speed of the computer processing machine spindle, in addition to improving the processing efficiency and reducing the failure and saving the electricity cost.

The second object of the present invention mainly adopts an active temperature compensation control system, and can give a corresponding temperature according to the change of the rotational speed of the computer processing machine spindle, so that the spindle does not generate thermal expansion and contraction due to excessive or too low temperature. The spindle maintains the set machining origin to maintain the set machining accuracy.

In order to enable the reviewing committee to better understand the structural features and the efficacy of the present invention, the drawings will be described in detail and will be described in detail later.

Referring to the first, second and third figures, the present invention relates to a computerized mechanical spindle active temperature compensation control system, which mainly comprises a control circuit unit (1) and a cooling device (2), wherein the control The circuit unit (1) comprises a central processing unit (CPU) (11), a signal input terminal (12) and a cooling liquid temperature input terminal (13), and the central processing unit (CPU) (11) includes a constant temperature a control circuit (111) and an active temperature compensation control circuit (112), wherein the chiller device (2) comprises a compressor (21), a radiator (22), a cooling fan (23), a condenser (24), and a heat exchange (25), plus The heat exchanger (26) and the pump (27) and the like, the cooler device (2) is connected to the computer processing machine (4) main shaft chamber (42) by the circulation pipe (3), and the coolant circulation is transmitted to control the main shaft ( 41) The temperature, the pump (27) in the chiller unit (2) transfers the high temperature coolant flowing out of the main shaft chamber (42) return port (422) of the main shaft (41) into the heat exchanger (25) for cooling. The liquid chamber (251) performs heat exchange to lower the temperature of the coolant, and then flows back into the main shaft chamber (42) through the inflow port (421), and the cold coal is transported to the radiator (22) through the compressor (21) via the cooling fan. (23) After cooling and cooling, the temperature is cooled by a condenser (24), and the cooled coal cooled by the condenser (24) is finally transferred to the cold coal chamber (252) in the heat exchanger (25) to perform After cooling the coolant in the coolant chamber (251), the cold coal is returned to the compressor (21), and the signal input terminal (12) of the control circuit unit (1) is connected to the PLC from the computer processing machine (4). The spindle (41) speed signal outputted by the spindle speed signal output end (43) is provided on the circulation pipe (3) between the coolant return port (422) and the pump (27) of the spindle chamber (42), and has a liquid sense Thermostat (31), flat The temperature of the coolant flowing out of the return port (422) of the main shaft chamber (42) is sensed by the liquid temperature sensor (31) and transmitted to the cooling liquid temperature input end (13) of the control circuit unit (1) to determine the cooling. Whether the temperature of the liquid is higher or lower than the set constant temperature value, and the constant temperature control circuit (111) of the central processing unit (CPU) (11) controls the startup cooling device (2) and the compressor (21) generates the cooling temperature. The adjustment makes the temperature of the coolant reach the constant temperature control effect at the set temperature, and the temperature automatic tracking setting function of the invention is used as a computer processing machine (4) When processing workpieces of different materials or when the machining position and the spindle (41) rotation speed are different during machining, the spindle (41) rotates at a high rotation speed and a low rotation speed to cause the spindle (41) to produce different machining temperatures. The signal input terminal (12) of the control circuit unit (1) receives the signal of the spindle (41) rotation speed. When the spindle (41) rotates at a high speed, the processing temperature generated by the spindle (41) is higher at this time. After the active temperature compensation control circuit (112) in the processing unit (CPU) (11) is interpreted, the compressor (21) of the cooling device (2) is started to drive the cold coal to the cold in the heat exchanger (25). The coal chamber (252) can reduce the temperature of the coolant so that the spindle (41) can obtain the proper processing temperature required at a high rotation speed. When the spindle (41) rotates at a low speed, the spindle (41) is generated. The processing temperature is lower. Similarly, the active temperature compensation control circuit (112) in the central processing unit (CPU) (11) after reading the low speed signal of the main shaft (41) and the current coolant temperature data, Decided to stop the compressor (21) or reduce the operation of the compressor (21), and when the coolant temperature is too low, it can also be controlled The heater (26) disposed between the heat exchanger (25) and the cooling chamber inlet (421) of the main shaft chamber (42) heats the cooling liquid to reach the required processing temperature of the main shaft (41), by the present invention The control system can be controlled by the computer processing machine (4) spindle (41), and the active temperature compensation control circuit (112) controls the compressor (21) and the heater (26) of the cooling device (2). The circulating coolant cools or heats up to actively give the computer processing machine (4) the optimum temperature for machining the spindle (41). In addition to improving the processing efficiency, reducing the failure and increasing the life, the spindle (41) is not overheated or Too low to produce thermal expansion and contraction, to protect The spindle (41) does not generate the machining origin set by the offset, and the machining accuracy is improved.

The invention has a temperature automatic tracking setting function, and the pump (27) starts to operate every time the cooling device (2) is started, and the cooling liquid in the circulation device (2) of the cooling device (2) starts to circulate through the cooling device. (2) to the computer processing machine (4) the main shaft chamber (42) of the main shaft (41) and then the reflow device (2) (as shown in the first figure), the liquid temperature sensor in the circulation pipe (3) (31) In the 30th second of the circulating coolant circulation (only pump operation in 30 seconds, other functions do not start), the temperature value brought back from the spindle chamber (42) of the computer processing machine (4) spindle (41) is locked. For the chiller unit (2) control the computer processing machinery (4) the basic temperature of the spindle (41) work, until the finished part of the computer processing machine (4) the main shaft (41) maintains the base temperature until the chiller unit (2 ) completely shut down, start the chiller unit (2) again, the chiller unit (2) will re-detect the new temperature value, such chiller unit (2) control mode can make the computer processing machinery (4), not in the air conditioner The constant temperature plant can improve the working accuracy by more than 30%, achieve environmental protection and energy saving, and make the computer processing machinery (4) spindle (41) Extended.

In summary, the invention has the advantages of improving the processing efficiency, reducing the failure, increasing the life, and preventing the spindle from being inflated and contracted due to excessive or too low temperature, and maintaining the machining origin of the spindle without offset. The effect is a novel, progressive and industrially applicable invention, which has already met the requirements for the invention patent, and has filed a patent application in accordance with the law. The review committee of the committee can review it in detail and give it an early date. The patent in this case is actually a virtue.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent variation and modification according to the scope of the present invention should still belong to the present invention. Within the scope of coverage.

(1)‧‧‧Control circuit unit

(11)‧‧‧Central Processing Unit (CPU)

(111)‧‧‧ Constant temperature control circuit

(112)‧‧‧Active temperature compensation control circuit

(12) ‧‧‧ signal input

(13) ‧‧‧Cooling liquid temperature input

(2) ‧‧‧Cooling unit

(21)‧‧‧Compressors

(22)‧‧‧ radiator

(23) ‧‧‧ cooling fan

(24) ‧‧‧Condenser

(25) ‧‧ ‧ heat exchanger

(251) ‧‧‧Cooling chamber

(252) ‧‧‧Cold coal room

(26)‧‧‧ heater

(27)‧‧‧ pump

(3) ‧‧‧Circulation tube

(31)‧‧‧Liquid temperature sensor

(4)‧‧‧Computer processing machinery

(41)‧‧‧ Spindle

(42)‧‧‧ spindle room

(421)‧‧‧Inflow

(422)‧‧‧Return port

(43)‧‧‧PLC spindle speed signal output

The first figure is a control plan view of the various components of the present invention.

The second figure is a block diagram of the control flow of the present invention.

The third figure is an enlarged view of the control circuit unit of the present invention.

(1)‧‧‧Control circuit unit

(11)‧‧‧Central Processing Unit (CPU)

(12) ‧‧‧ signal input

(13) ‧‧‧Cooling liquid temperature input

(2) ‧‧‧Cooling unit

(21)‧‧‧Compressors

(22)‧‧‧ radiator

(23) ‧‧‧ cooling fan

(24) ‧‧‧Condenser

(25) ‧‧ ‧ heat exchanger

(251) ‧‧‧Cooling chamber

(252) ‧‧‧Cold coal room

(26)‧‧‧ heater

(27)‧‧‧ pump

(3) ‧‧‧Circulation tube

(31)‧‧‧Liquid temperature sensor

(4)‧‧‧Computer processing machinery

(41)‧‧‧ Spindle

(42)‧‧‧ spindle room

(421)‧‧‧Inflow

(422)‧‧‧Return port

(43)‧‧‧PLC spindle speed signal output

Claims (4)

The utility model relates to an active temperature compensation control system for a computer processing mechanical spindle, which mainly comprises a control circuit unit, a cooling device and a computer processing machine. The main feature is that the control circuit unit comprises a central processing unit (CPU), a signal input end and a a cooling liquid temperature input end, and the central processing unit (CPU) includes a constant temperature control circuit and an active temperature compensation control circuit, wherein the cooling device comprises a compressor, a radiator, a cooling fan, a condenser, a heat exchanger, and a heating And the pump and other components, the cooler device is connected with the computer processing machine main shaft chamber by a circulation pipe, and the coolant circulation is transmitted to control the temperature of the main shaft, and the pump in the cooling device device is discharged from the main shaft chamber return port of the main shaft. The high-temperature coolant is transferred into the coolant chamber in the heat exchanger for heat exchange, so that the temperature of the coolant is lowered, and then the reflux is introduced into the main shaft chamber through the inflow port, and the cold coal is sent to the radiator through the compressor to be cooled and cooled by the cooling fan. And then cooled by a condenser, the cold coal cooled by the condenser is finally transferred to the aforementioned heat After the cold coal chamber in the converter is cooled to cool the coolant in the coolant chamber, the cold coal is returned to the compressor, and the signal input end of the control circuit unit is connected to the output of the PLC spindle speed signal from the computer processing machine. The output spindle speed signal is controlled by the automatic temperature tracking setting function. When the computer processing machine processes different material processing parts or the machining position and the spindle rotation speed are different during machining, the spindle rotation speed changes with high rotation speed and low rotation speed. When the spindle generates different processing temperatures, the signal input end of the control circuit unit receives the signal of the spindle speed from the output signal of the PLC processing spindle of the computer processing machine. When the spindle speed is high, the machining temperature generated by the spindle at this time is generated. Higher, via the main unit in the central processing unit (CPU) After the dynamic temperature compensation control circuit interprets, the compressor of the cooling device is started to drive the cold coal to the cold coal chamber in the heat exchanger to reduce the temperature of the coolant, so that the spindle can obtain the high speed. The proper processing temperature, when the spindle speed is low, the machining temperature generated by the spindle is lower at this time. Similarly, the active temperature compensation control circuit in the central processing unit (CPU) interprets the low speed signal of the spindle and the current cooling. After the data of the liquid temperature, it is decided to stop the compressor or reduce the operation of the compressor. The active temperature compensation control system for a computer processing machine spindle according to claim 1, wherein a liquid temperature sensor is disposed on the circulation pipe between the coolant return port of the main shaft chamber and the pump, and the liquid temperature is sensed by the liquid. The temperature of the coolant flowing from the return port of the main shaft chamber is transmitted to the temperature input end of the cooling liquid of the control circuit unit, and the control circuit unit determines whether the temperature of the coolant is higher or lower than the data of the set temperature range, and cooperates with The signal input end of the control circuit unit receives the spindle speed signal data outputted from the PLC motor speed signal output end of the computer processing machine, and the two kinds of data are read and controlled by the active temperature compensation control circuit in the central processing unit (CPU). The compressor of the chiller unit produces an adjustment of the temperature to actively give the computer the optimum temperature for processing the mechanical spindle. The active temperature compensation control system for a computer processing machine spindle according to claim 1, wherein a heater is arranged on the circulation pipe between the heat exchanger and the coolant inlet of the main shaft chamber, except for the cooling device. When the temperature of the coolant is adjusted to the temperature of the coolant, when the temperature of the coolant is too low, the heater provided between the heat exchanger and the coolant inlet of the main shaft chamber can be heated to heat the coolant. To achieve the required spindle machining temperature. For example, the active temperature compensation control system for the computer processing machine spindle described in the first paragraph of the patent application scope, wherein the automatic temperature tracking setting function is mainly for starting the cooling device every time, the pump starts to operate, and the cooling device is in the circulation tube. The coolant starts to circulate, passes through the chiller device to the spindle chamber of the computer processing machine spindle and then recirculates the chiller device. The liquid temperature sensor in the circulation pipe circulates for 30 seconds in the coolant circulation, and only the pump operates in 30 seconds. The other parts are not activated. The temperature value brought back from the spindle chamber of the computer processing machine spindle is locked to the temperature of the basic unit in the operation of the computer processing machine spindle. The workpiece is maintained at the basic temperature of the machining machine. Until the chiller unit is completely shut down, the chiller unit is restarted, and the chiller unit will re-detect the new temperature value. Such a chiller unit control mode can make the computer processing machine improve the working accuracy by 30% without using the air conditioning thermostat. Above, achieve environmental protection and energy saving, and extend the life of computer processing machinery spindle