Energy-saving device of multi-system composite machine tool

Abstract

A multi-system composite machine tool is provided with: a CNC control device (10) for forming a plurality of machining condition groups in which at least one shaft system is integrated on the basis of whether or not it is possible to simultaneously use the CNC control device (10) while avoiding conflicts between shaft systems in accordance with the machining conditions of a workpiece during composite machining of the workpiece; identifying the set of machining conditions and providing the set of machining conditions signal in response to execution of a machining program; and a power supply device (20) including a plurality of driver modules that drive a shaft system corresponding to at least one of the processing condition group signals, and relays provided in a number corresponding to the number of the driver modules, a standby power is applied to a driver module for driving shafting of the machining condition group according to a signal of the machining condition group applied by the CNC control device (10), and the CNC control device (10) distinguishes unused shafting through analysis of a machining program. The power supply device (20) cuts off the supply of standby power to the driver modules of the unused shafting, thereby preventing energy waste caused by the standby power.

Description

Technical Field

[0001] The present invention relates to reducing the electric energy used in a machine tool, and more particularly, to a device and method for realizing energy saving by cutting off the standby power of an axis system not used for machining in a multi-system compound machine tool. Background Art

[0002] Generally, a multi-system compound machine tool has at least two axis systems for rotating or transferring a tool or workpiece, and performs various processing techniques such as milling, lathe processing, and grinding processing by setting the workpiece once on one machine tool. In order to perform such compound processing, a CNC control device for controlling the axis system is provided. Since the CNC control device applied to the multi-system compound machine tool has multiple axis systems as control objects, a CNC control device with the concept of integrating multiple numerical control devices is adopted.

[0003] Therefore, the CNC control device of a multi-system compound machine tool includes a system that independently executes a machining program, and a group consisting of a collection of such systems. That is, one system means that one machining program (G code) is executed by controlling the motion of more than one axis system, and multi-system means that there are multiple systems, so that more than one machining program can be executed simultaneously to machine a workpiece.

[0004] Therefore, in order to perform complex machining in a multi-system complex machine tool, workpiece and machining information must be shared between the systems, and multiple systems must be operated in a complex manner.

[0005] In this way, the multi-system compound machine tool is composed of multiple axis systems that perform rotation or transfer functions, and each system composed of multiple axis systems is driven and controlled by an independently provided power supply.

[0006] However, in such conventional multi-system compound machine tools, each system operates simultaneously and compoundly to process a workpiece, but due to the characteristics of the machining program, such as avoiding conflicts between machining operations of each system or the order of machining operations, there are axis systems that are not involved in the compound operation. Nevertheless, when the multi-system compound machine tool starts to operate, the drive units of each system driving these axis systems are always kept in a state of supplying standby power so as to be ready for immediate driving at any time.

[0007] Therefore, if Figure 1 As shown, even if the shaft system of the corresponding system is not driven, such standby power causes power consumption because a constant current value is always maintained.

[0008] Patent document 1 introduced below relates to an energy-saving numerical control device, which minimizes the power consumption of a machine tool by adjusting the acceleration and deceleration of a transfer axis and the acceleration and deceleration of a spindle, wherein a machining program section is disclosed that issues at least one instruction of the position, speed, and acceleration and deceleration for driving a spindle motor or a transfer motor according to a machining cycle, and introduces a method of reducing power consumption by calculating the time constant of each instruction included in the cycle in conjunction with the machining program section. However, this method only uses one of the friction torque of the spindle, the load inertia, and the parameters of the spindle motor to control the time constant that determines the target speed arrival time of the transfer axis system or the rotating axis system, and is only a stopgap measure to reduce a small amount of power consumption when the axis system is accelerated and decelerated.

[0009] Prior art literature

[0010] Patent Literature

[0011] (Patent Document 1) Korean Patent No. 10-1575144 Summary of the invention

[0012] Technical Solution

[0013] In order to solve the above-mentioned problem, the object of the present invention is to provide a device and method for distinguishing between axis systems used in processing operations and axis systems not used in a multi-system compound machine tool, and not supplying standby power to the drive module that controls the unused axis systems, thereby reducing the power consumption of the multi-system compound machine tool and achieving energy saving.

[0014] Technical Solution

[0015] In order to solve the problems mentioned above, the energy-saving device of the multi-system compound machine tool of the present invention comprises: a CNC control device 10, which forms a plurality of processing condition groups with at least one axis system as a set according to whether it is possible to avoid conflicts between axis systems according to the processing conditions of the workpiece during compound processing of the workpiece and use them simultaneously, and identifies a specific processing condition group among the plurality of processing condition groups in response to the execution of the processing program and provides the processing condition group signal; and a power supply device 20, which includes a plurality of driver modules and a plurality of relays, the plurality of driver modules drive the axis system corresponding to at least one of the processing condition group signals, the plurality of relays are arranged in a number corresponding to the plurality of driver modules, and apply standby power to the driver module of the axis system driving the processing condition group according to the signal of the processing condition group applied by the CNC control device 10.

[0016] As a preferred embodiment, the axis system includes: a main spindle S1, which is arranged in the Z-axis direction, wherein the main spindle S1 includes a main spindle rotation axis system C1 that rotates with the rotation axis in the Z-axis direction as a reference; a milling spindle S3, which is arranged in a direction perpendicular to the rotation axis of the main spindle rotation axis system C1, wherein the milling spindle S3 includes a milling spindle X-axis system X1 that moves the milling spindle S3 along the X-axis direction, a milling spindle Y-axis system Y1 that moves the milling spindle S3 along the Y-axis direction, and a milling spindle Z-axis system Z1 that moves the milling spindle S3 along the Z-axis direction as a transfer axis system, and the milling spindle S3 includes a milling spindle rotation axis that rotates the milling spindle S3 with the axis of the X-axis as a reference. System C3 serves as a rotation axis system; a sub-spindle S2, which is arranged at a position opposite to the main spindle S1 in the Z-axis direction, wherein the sub-spindle S2 includes a sub-spindle rotation axis system C2 that rotates with the rotation axis in the Z-axis direction as a reference, and a sub-spindle transfer axis system Z3 that transfers the sub-spindle S2 along the Z-axis direction as a transfer axis system; and a tool holder S4, which is arranged in a direction perpendicular to the rotation axes of the main spindle S1 and the sub-spindle S2, wherein the tool holder S4 includes a tool holder X-axis system X2 that moves the tool holder S4 in a direction perpendicular to the rotation axes of the main spindle S1 and the sub-spindle S2, and a tool holder Z-axis system Z2 that moves the tool holder S4 along the Z-axis direction as a transfer axis system.

[0017] As a preferred embodiment, it is characterized in that the milling spindle rotation axis system C3 also includes a milling division axis system B that performs an angle division rotation function.

[0018] As a preferred embodiment, it is characterized in that the tool holder S4 further includes a tool holder rotating axis system C4 as a rotating axis system for rotating the rotating tool installed on the tool holder S4.

[0019] As a preferred embodiment, it is characterized in that there is an anti-vibration frame S5 arranged between the main spindle S1 and the auxiliary spindle S2, and the anti-vibration frame S5 includes an anti-vibration axis system W1 as a transfer axis system for moving the anti-vibration frame S5 along the Z-axis direction.

[0020] As a preferred embodiment, it is characterized in that the processing condition group of the CNC control device 10 includes at least one of the following groups: a first group in which the transfer axis systems X1, Y1, Z1, Z3, X2, Z2 and the rotation axis systems C1, C2, C3, and C4 of the first system and the second system are all used; a second group in which the transfer axis systems X1, Y1, Z1 and the rotation axis systems C1 and C3 of the first system are all used, and in the second system only the sub-spindle rotation axis system C2 of the sub-spindle S2 is used; a second group in which the transfer axis systems Z3, X2, Z2 and the rotation axis systems C1, C2, C3, and C4 of the second system are all used C2, C4 are all used, and in the first system only the third group of the rotating axis system C3 of the milling spindle S3 is used; the transfer axis system X1, Y1, Z1 and the rotating axis system C1, C3 of the first system are all used, and in the second system only the fourth group of the tool holder X axis system X2 which serves as the transfer axis system of the tool holder S4 is used; only the fifth group of the transfer axis system X1, Y1, Z1 and the rotating axis system C1, C3 of the first system is used; and only the sixth group of the transfer axis system Z3, X2, Z2 and the rotating axis system C2, C4 of the second system is used.

[0021] As a preferred embodiment, it is characterized in that the CNC control device 10 includes: a machining program unit 11, which controls each of the axis systems to perform machining operations on the workpiece; a PLC control unit 12, which identifies the machining condition group including the axis system to be used by analyzing the machining program of the machining program unit 11; and an I / O module 13, which outputs a relay drive signal of the power supply device 20 according to the machining condition group signal provided from the PLC control unit 12.

[0022] As a preferred embodiment, it is characterized in that the machining program unit 11 derives the M code included in the machining program, and applies the axis system signal to be used to the PLC control unit 12 according to the M code.

[0023] As a preferred embodiment, it is characterized in that the machining program unit 11 applies the rotating axis system C1, C2, C3, C4 signals of the spindles S1, S2, S3 and the tool holder S4 to be used included in the machining program to the PLC control unit 12, and the PLC control unit 12 recognizes the machining condition group including the rotating axis system C1, C2, C3, C4 signals and applies it to the I / O module 13.

[0024] As a preferred embodiment, it is characterized in that the relay is a B-contact type relay that releases the contact according to the signal of the processing condition group applied by the CNC control device 10, wherein when it is in the A contact, the standby power of the axis driver module of the corresponding processing condition group is cut off; when it is in the B contact, the standby power is supplied to the axis driver module of the corresponding processing condition group.

[0025] As a preferred embodiment, it is characterized in that the relay includes: a first relay 31, which is connected to a first driver module 41, and the first driver module 41 supplies or cuts off standby power to the main spindle rotating axis system C1 as a rotating axis system, the milling spindle X axis system X1 as a transfer axis system, the milling spindle Y axis system Y1 and the milling spindle Z axis system Z1; a second relay 32, which is connected to a second driver module 42, and the second driver module 42 supplies or cuts off standby power to the auxiliary spindle rotating axis system C2 as a rotating axis system; a third relay 33, which is connected to The first embodiment is connected to a third driver module 43, which supplies or cuts off standby power to the tool holder rotating axis system C4 as a rotating axis system; the second embodiment is connected to a fourth driver module 44, which supplies or cuts off standby power to the tool holder X axis system X2, the tool holder Z axis system Z2 and the auxiliary spindle transferring axis system Z3 as the transferring axis system; and the third driver module 43 is connected to the third driver module 43, which supplies or cuts off standby power to the tool holder rotating axis system C4 as a rotating axis system; the fourth relay 34 is connected to the fourth driver module 44, which supplies or cuts off standby power to the tool holder X axis system X2, the tool holder Z axis system Z2 and the auxiliary spindle transferring axis system Z3 as the transferring axis system; and the fifth relay 35 is connected to the fifth driver module 45, which supplies or cuts off standby power to the milling spindle rotating axis system C3 as the rotating axis system.

[0026] As a preferred embodiment, it is characterized in that the relay also includes a sixth relay 36, which is connected to a sixth driver module 46, and the sixth driver module 46 supplies or cuts off standby power to the tool changer arm axis system, the tool changer displacement axis system, the first tool magazine axis system and the second tool magazine axis system of the multi-system compound machine tool.

[0027] Effects of the Invention

[0028] The present invention can reduce power consumption by distinguishing between axis systems used in machining operations and axis systems not used in a multi-system compound machine tool and not supplying standby power to a driver module controlling the unused axis systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a standby power distribution diagram of a driver module of a multi-system complex machine tool according to an embodiment of the prior art.

[0030] Figure 2 This is a conceptual diagram of axis systems constituting each system of a multi-system complex machine tool according to an embodiment of the present invention.

[0031] Figure 3 This is a table showing the system classification of the axis systems of the multi-system complex machine tool according to the embodiment of the present invention and the complex machining condition combination table of each system.

[0032] Figure 4 It is a block diagram of a driver module of each system of a multi-system complex machine tool according to an embodiment of the present invention.

[0033] Figure 5This is an example of a machining program in which standby power is applied to the shaft system driver module through a machining program according to an embodiment of the present invention.

[0034] Figure 6 It is an axis system table allocated to each relay and driver module in an embodiment of the present invention.

[0035] Figure 7 This is a table of relay and driver modules for cutting off each condition group and complex processing condition according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] Refer to the following Figures 2 to 7 Preferred embodiments of the present invention are described.

[0037] In the present invention or this embodiment, unless otherwise specified, the axis system refers to a general term for the rotating axis system and the transferring axis system, and each axis system has a servo motor controlled by the instruction of the numerical control device or the CNC control device 10 of the multi-system compound machine tool, and each servo motor plays the role of rotating or transferring the corresponding axis system through high-speed rotation or angle division. In addition, the servo motor constituting each axis system has a driver module, which receives power from the power supply device 20 and controls the rotation of the servo motor, and each driver module is controlled by the instruction of the numerical control device or the CNC control device 10.

[0038] In addition, this embodiment exemplarily shows a multi-system compound machine tool with multiple rotating axis systems and transferring axis systems, but not all multi-system compound machine tools must have such rotating axis systems and moving axis systems. Depending on the form of the multi-system compound machine tool, some rotating axis systems or transferring axis systems may be omitted or added.

[0039] Figure 2 This is a conceptual diagram of axis systems constituting each system of a multi-system complex machine tool according to an embodiment of the present invention.

[0040] Figure 3 This is a table showing the system classification of the axis systems of the multi-system complex machine tool according to the embodiment of the present invention and the complex machining condition combination table of each system. Figure 4 This is a control structure diagram of driver modules of each system of a multi-system complex machine tool according to an embodiment of the present invention. Figure 5 This is an example of a machining program for applying power to a shaft system driver module through a machining program according to an embodiment of the present invention. Figure 6 It is an axis system table allocated to each relay and driver module in an embodiment of the present invention. Figure 7 This is a table of relays and driver modules that are cut off for each condition group according to an embodiment of the present invention.

[0041] like Figure 2 As shown, the multi-system compound machine tool of this embodiment has the following axis system.

[0042] First, the first system includes a main spindle S1 provided in the multi-system complex machine tool along the Z-axis direction. The main spindle S1 includes a main spindle rotation axis system C1 that rotates with the rotation axis in the Z-axis direction as a reference.

[0043] In addition, the first system includes a milling spindle S3 arranged in a direction perpendicular to the rotation axis of the main spindle rotation axis system C1, and the milling spindle S3 includes a milling spindle X axis system X1 for moving the milling spindle S3 along the X axis direction, a milling spindle Y axis system Y1 for moving the milling spindle S3 along the Y axis direction, and a milling spindle Z axis system Z1 for moving the milling spindle S3 along the Z axis direction as a transfer axis system. In addition, the milling spindle S3 includes a milling spindle rotation axis system C3 for rotating the milling spindle S3 with the axis of the X axis as a reference as a rotation axis system.

[0044] On the other hand, the milling spindle rotation axis system C3 may include a milling split axis system B that performs an angle split rotation function according to the type of the multi-system compound machine tool.

[0045] In addition, the second system has a sub-spindle S2 which is arranged at a position opposite to the main spindle S1 along the Z-axis direction in the multi-system compound machine tool, and the sub-spindle S2 includes a sub-spindle rotating axis system C2 which rotates with the rotation axis line in the Z-axis direction as a reference, and a sub-spindle transferring axis system Z3 which transfers the sub-spindle S2 along the Z-axis direction as a transferring axis system.

[0046] In addition, the second system includes a tool holder S4 arranged in a direction perpendicular to the rotation axis of the main spindle S1 and the sub-spindle S2, and the tool holder S4 includes a tool holder X-axis system X2 for moving the tool holder S4 in a direction perpendicular to the rotation axis of the main spindle S1 and the sub-spindle S2, and a tool holder Z-axis system Z2 for moving the tool holder S4 in the Z-axis direction as a transfer axis system.

[0047] On the other hand, the tool holder S4 may include a tool holder rotating axis system C4 as a rotating axis system for rotating a rotating tool mounted on the tool holder S4 according to the type of the multi-system complex machine tool.

[0048] Furthermore, the second system may include an anti-vibration frame S5 provided between the main spindle S1 and the auxiliary spindle S2, wherein the anti-vibration frame S5 includes an anti-vibration axis system W1 as a transfer axis system for moving the anti-vibration frame S5 in the Z-axis direction.

[0049] However, since the installation of the vibration-proof frame S5 can be omitted depending on the type of the multi-system complex machine tool, the vibration-proof axis system W1 is a transfer axis system that can also be excluded depending on whether the vibration-proof frame S5 is installed.

[0050] like Figure 3 As shown, when performing composite processing on a workpiece, according to the processing conditions of the workpiece, the axis system described above can be divided into multiple processing condition groups with at least one axis system as a set according to whether the conflict between the axis systems can be avoided and used simultaneously. In this embodiment, it is divided into six processing condition groups, and the six condition groups are as follows.

[0051] The first condition group is a composite processing condition using the transfer axis systems X1, Y1, Z1, Z3, X2, Z2 and the rotation axis systems C1, C2, C3, C4 of the first system and the second system. That is, the first condition group refers to the working conditions for simultaneously or selectively using the main spindle S1, the auxiliary spindle S2, the milling spindle S3 and the tool holder S4 of the multi-system composite machine tool to process the workpiece.

[0052] The second condition group is a composite machining condition in which the transfer axis system X1, Y1, Z1 and the rotation axis system C1, C3 of the first system are all used, and in the second system, only the sub-spindle rotation axis system C2 of the sub-spindle S2 is used. That is, the second group refers to the working conditions for simultaneously or selectively using the main spindle S1, the sub-spindle S2 and the milling spindle S3 of the multi-system composite machine tool to machine the workpiece.

[0053] The third condition group is a composite machining condition in which the transfer axis systems Z3, X2, Z2 and the rotation axis systems C2, C4 of the second system are all used, and in the first system, only the rotation axis system C3 of the milling spindle S3 is used. That is, the third group refers to the working conditions in which the auxiliary spindle S2 and the milling spindle S3 and the tool holder S4 of the multi-system composite machine tool are used simultaneously or selectively to process the workpiece.

[0054] The fourth condition group is a composite machining condition in which the transfer axis system X1, Y1, Z1 and the rotation axis system C1, C3 of the first system are all used, and in the second system, only the tool holder X axis system X2 as the transfer axis system of the tool holder S4 is used. That is, the fourth group refers to the working condition in which the main spindle S1, the milling spindle S3 and the tool holder S4 of the multi-system composite machine tool are used simultaneously or selectively to process the workpiece.

[0055] The fifth condition group is a composite machining condition using only the transfer axis system X1, Y1, Z1 and the rotation axis system C1, C3 of the first system. That is, the fifth group refers to the working condition of machining the workpiece using the main spindle S1 and the milling spindle S3 of the multi-system composite machine tool simultaneously or selectively.

[0056] The sixth condition group is a composite machining condition using only the transfer axis system Z3, X2, Z2 and the rotation axis system C2, C4 of the second system. That is, the sixth group refers to the working condition of machining the workpiece using the sub-spindle S2 and the tool holder S4 of the multi-system composite machine tool simultaneously or selectively.

[0057] On the other hand, Figure 4 As shown, the multi-system compound machine tool of this embodiment includes: a CNC control device 10, which identifies the processing condition group and provides the processing condition group signal in response to the execution of the processing program; and a power supply device 20, which includes a plurality of driver modules and a plurality of relays, the driver module drives the axis system corresponding to at least one of the processing condition group signals provided by the CNC control device 10, the plurality of relays are arranged in a number corresponding to the driver modules, and apply standby power to the driver module driving the axis system of the processing condition group according to the processing condition group signal applied by the CNC control device 10.

[0058] The relay of the power supply device 20 supplies standby power only to the driver module driving the axis system of the machining condition group provided by the CNC control device 10, and cuts off the supply of standby power to the driver module driving the axis system for which the machining condition group is not provided by the CNC control device 10.

[0059] More specifically, the CNC control device 10 includes: a machining program unit 11, which controls each axis system of the first system and the second system to perform machining operations on a workpiece; a PLC control unit 12, which identifies a machining condition group including an axis system to be used by analyzing the machining program of the machining program unit 11; and an I / O module 13, which outputs a relay drive signal of the power supply device 20 in a manner of starting a driver module of the axis system of the machining condition group to be used based on a machining condition group signal to be used provided by the PLC control unit 12.

[0060] The power supply device 20 includes: a plurality of relays, which operate by receiving a signal of at least one of the processing condition groups from the I / O module 13 of the CNC control device 10; and a plurality of driver modules, which are connected correspondingly to the relays and supply standby power to the axis system of the processing condition group applied to the relay according to the signal of the processing condition group.

[0061] On the other hand, the relay of the power supply device is a B-contact type relay that releases the contact in accordance with the processing condition group signal of the axis system to be used applied from the I / O module 13, and when in the A-contact state where the contact is formed, the standby power to the axis system driver module of the corresponding processing condition group is cut off; when in the B-contact state where the contact is not formed, the relay is connected to the driver module in a manner of supplying standby power to the axis system driver module of the processing condition group.

[0062] On the other hand, when the machining program is executed in the machining program section 11, the CNC control device 10 excites all relays of the relay section 30 simultaneously with the start of the machining program, and applies standby power to all driver modules (41 to 46) driven by each of the relays so that all axis systems can be used.

[0063] Then, if Figure 5 As shown, when the machining program starts, the PLC control unit 12 detects the axis system to be used and the axis system not to be used from the machining program unit 11. That is, when the axis system to be used is detected by the machining program, and the machining program is executed in order to machine the workpiece in the machining program unit 11, the machining program unit 11 derives the M code included in the machining program, and applies the axis system signal to be used to the PLC control unit 12 according to the M code. The PLC control unit 12 identifies the machining condition group and applies it to the I / O module 13 of the CNC control device 10. The I / O module 13 maintains the B contact state of the relay of the power supply device 20 corresponding to the condition group, and excites the relay of the power supply device 20 that does not correspond to the condition group in a manner of forming an A contact.

[0064] On the other hand, as another embodiment, Figure 5 As shown, when the machining program starts, the PLC control unit 12 detects the rotation axis system to be used from the machining program unit 11. That is, when the rotation axis system to be used is detected by the machining program, and the machining program is executed in order to machine the workpiece in the machining program unit 11, the machining program unit 11 applies the rotation axis system C1, C2, C3, C4 signals of the spindles S1, S2, S3, S4 to be used included in the machining program to the PLC control unit 12. The PLC control unit 12 recognizes the composite machining condition group including the rotation axis system C1, C2, C3, C4 signals and applies it to the I / O module 13 of the CNC control device 10. The I / O module 13 maintains the B contact state of the relay of the power supply device 20 corresponding to the condition group, and excites the relay of the power supply device 20 that does not correspond to the condition group in a manner of forming the A contact.

[0065] As described above, when the use of an M code or a spindle is terminated during the execution of a machining program, all relays (31 to 36) of the relay unit 30 are restored to the B contact state until the use of the next M code or spindle is recognized, and standby power is applied to all driver modules (41 to 46) of the driver module unit 40. However, since the time for applying standby power to all driver modules (41 to 46) in the continuous composite machining process is very short, the power consumption is not too much and does not hinder the energy saving effect of the present invention.

[0066] On the other hand, Figure 6 , Figure 7 As shown, in this embodiment, all relays adopt B contact mode, the first relay 31 is connected to the first driver module 41, and the first driver module 41 supplies or cuts off standby power to the main spindle rotating axis system C1 as the rotating axis system, the milling spindle X axis system X1 as the transfer axis system, the milling spindle Y axis system Y1, and the milling spindle Z axis system Z1.

[0067] Furthermore, the second relay 32 is connected to a second driver module 42 that supplies or cuts off standby power to the auxiliary spindle rotating shaft system C2 as a rotating shaft system.

[0068] In addition, the third relay 33 is connected to a third driver module 43, and the third driver module 43 supplies or cuts off the standby power to the tool holder rotating axis system C4 as the rotating axis system.

[0069] In addition, the fourth relay 34 is connected to a fourth driver module 44, and the fourth driver module 44 supplies or cuts off the standby power to the tool holder X-axis system X2, the tool holder Z-axis system Z2, and the auxiliary spindle transfer axis system Z3 as the transfer axis system.

[0070] Furthermore, the fifth relay 35 is connected to a fifth driver module 45 that supplies or cuts off standby power to the milling spindle rotating axis system C3 as a rotating axis system.

[0071] In addition, the sixth relay 36 is connected to the sixth driver module 46, which supplies or cuts off standby power to the tool replacement device arm axis system (not shown), the tool replacement device displacement axis system (not shown), the first tool magazine axis system (not shown), and the second tool magazine axis system (not shown) of the multi-system compound machine tool.

[0072] Therefore, in this embodiment, all relays adopt B contact mode, referring to Figure 3When the condition group signal used by the axis system applied from the I / O module 13 to the relay unit 30 is the first condition group signal using all the axis systems of the first system and the second system, all the relays (31 to 36) of the relay unit 30 do not work and maintain the B contact state, thereby applying 24V standby power to all the driver modules (41 to 46) linked with all the relays (31 to 36).

[0073] In addition, when the use condition group signal of the axis system applied from the I / O module 13 to the relay unit 30 is the second condition group signal for simultaneously using the spindles of the first and second systems, a contact is formed in the fourth relay 34, and the standby power of the transfer axis system Z3, X2, and Z2 of the fourth driver module 44 linked to the fourth relay 34 is cut off, and 24 volts of standby power is applied to the driver modules other than these.

[0074] In addition, when the use condition group signal of the axis system applied from the I / O module 13 to the relay unit 30 is the third condition group signal used by both the milling spindle rotation axis system C3 of the first system and the axis system of the second system, a contact is formed in the first relay 31, and the standby power of the X1, Y1, Z1, and C1 axis systems of the first driver module 41 connected to the first relay 31 is cut off, and 24 volts of standby power is applied to the driver modules other than these.

[0075] In addition, when the use condition group signal of the axis system applied from the I / O module 13 to the relay unit 30 is the fourth condition group signal of using all the axis systems of the first system and using only the tool holder rotation axis system C4 in the second system, contacts are formed in the second relay 32 and the fourth relay 34, and the standby power of the Z3, Z2, and C2 axis systems of the second driver module 42 and the fourth driver module 44 connected to the second relay 32 and the fourth relay 34 is cut off, and 24 volts of standby power is applied to the driver modules other than these.

[0076] In addition, when the use condition group signal of the axis system applied from the I / O module 13 to the relay unit 30 is the fifth condition group signal of using only all the axis systems of the first system, contacts are formed in the second relay 32, the third relay 33 and the fourth relay 34, and the standby power of the second system X2, Z2, Z3, C2, C4 axis systems of the second driver module 42, the third driver module 43 and the fourth driver module 44 connected to the second relay 32, the third relay 33 and the fourth relay 34 is cut off, and 24 volts of standby power is applied to the driver modules other than these.

[0077] In addition, when the use condition group signal of the axis system applied from the I / O module 13 to the relay unit 30 is the sixth condition group signal of using only all the axis systems of the second system, contacts are formed in the first relay 31 and the fifth relay 35, and the standby power of the first system X1, Z1, Y1, C1, C3 axis systems of the first driver module 41 and the fifth driver module 45 connected to the first relay 31 and the fifth relay 35 is cut off, and 24 volts of standby power is applied to the driver modules other than these.

[0078] On the other hand, the sixth relay 36 and the sixth driver module 46 are used to supply or cut off standby power to the tool changer (not shown) and the first and second tool magazine related axes. When there is a tool change instruction in the machining program section, the B contact of the sixth relay 36 is maintained by the PLC control unit 12 and the I / O module 13 to supply standby power to the tool changer arm axis system (not shown), the tool changer displacement axis system (not shown), the first tool magazine axis system (not shown) and the second tool magazine axis system (not shown). When there is no tool change instruction in the machining program section, the A contact is maintained in the sixth relay 36 to cut off the supply of standby power to the tool changer arm axis system (not shown), the tool changer displacement axis system (not shown), the first tool magazine axis system (not shown) and the second tool magazine axis system (not shown).

[0079] As described above, when the use of one M code or spindle ends during the execution of the machining program, all relays (31 to 36) of the relay unit 30 are maintained in the B contact state until the use of the next M code or spindle is recognized, and standby power is applied to all driver modules (41 to 46) of the driver module unit 40. However, since the moment of executing one M code and then executing the M code for the next machining is very short in the continuous composite machining process, even if standby power is applied to all driver modules (41 to 46) instantaneously during the process, the power consumption will not be too much to hinder the energy saving effect of the present invention.

[0080] On the other hand, as another embodiment, the relay unit 30 may also be configured as an A contact. In this case, the corresponding driver module driven by each of the relays is supplied with 24V standby power when the relay is at the A contact, and the standby power is blocked when the relay is at the B contact, so that the same embodiment as the B contact method can be achieved.

[0081] In addition, although the present embodiment is described using a multi-system compound machine tool having two systems and multiple axis systems as an embodiment, a person skilled in the art may modify the present embodiment by excluding or adding some axis systems to form a multi-system compound machine tool, grouping the axis systems based on the possibility of compound processing of each axis system and assigning drive modules to each of them, each drive module sensing whether the corresponding axis system is used through the processing program of the CNC control device 10, supplying power to the drive module of the axis system in use, and cutting off the power supply to the drive module of the axis system not in use, thereby implementing the invention of the present claim.

[0082] Finally, as described above, the present invention analyzes the machining program in the CNC control device 10, distinguishes the axis systems that will not be used, and cuts off the supply of standby power to the drive modules of these unused axis systems through the power supply device 20, thereby preventing energy waste caused by standby power.

[0083] Reference numerals

[0084] 10: CNC control device, 11: machining program unit, 12: PLC control unit, 13: I / O module, 20: power supply device, 30: relay unit, 31: first relay, 32: second relay, 33: third relay, 34: fourth relay, 35: fifth relay, 36: sixth relay, 40: driver module unit, 41: first driver module, 42: second driver module, 43: third driver module, 44: fourth driver module, 45: fifth driver module, 46: sixth driver module.

Claims

1. An energy-saving device for a multi-system compound machine tool, characterized in that: have: A CNC control device (10) forms a plurality of machining condition groups based on at least one axis system as a set according to whether the machining conditions of the workpiece can avoid conflicts between the axis systems and use them simultaneously when the workpiece is compositely machined, identifies the machining condition group in response to the execution of the machining program, and provides the machining condition group signal; as well as A power supply device (20) includes a plurality of driver modules and a plurality of relays, wherein the plurality of driver modules drive an axis system corresponding to at least one of the processing condition group signals, and the plurality of relays are arranged in a number corresponding to the plurality of driver modules and are arranged to apply standby power to the driver module driving the axis system of the processing condition group according to the signal of the processing condition group applied by the CNC control device (10).

2. The energy-saving device for a multi-system compound machine tool according to claim 1, characterized in that: The shaft system comprises: A main spindle (S1) arranged in the Z-axis direction, wherein the main spindle (S1) comprises a main spindle rotating axis system (C1) rotating with the rotation axis in the Z-axis direction as a reference; A milling spindle (S3) is arranged in a direction perpendicular to the rotation axis of the main spindle rotation axis system (C1), wherein the milling spindle (S3) includes a milling spindle X-axis system (X1) for moving the milling spindle (S3) along the X-axis direction, a milling spindle Y-axis system (Y1) for moving the milling spindle (S3) along the Y-axis direction, and a milling spindle Z-axis system (Z1) for moving the milling spindle (S3) along the Z-axis direction as a transfer axis system, and the milling spindle (S3) includes a milling spindle rotation axis system (C3) for rotating the milling spindle (S3) with the axis of the X-axis as a reference as a rotation axis system; A sub-spindle (S2) is arranged at a position opposite to the main spindle (S1) in the Z-axis direction, wherein the sub-spindle (S2) includes a sub-spindle rotating axis system (C2) rotating with a rotation axis line in the Z-axis direction as a reference, and a sub-spindle transferring axis system (Z3) for transferring the sub-spindle (S2) in the Z-axis direction as a transferring axis system; and A tool rack (S4) is arranged in a direction perpendicular to the rotation axis of the main spindle (S1) and the auxiliary spindle (S2), wherein the tool rack (S4) includes a tool rack X-axis system (X2) for moving the tool rack (S4) in a direction perpendicular to the rotation axis of the main spindle (S1) and the auxiliary spindle (S2), and a tool rack Z-axis system (Z2) for moving the tool rack (S4) in the Z-axis direction as a transfer axis system.

3. The energy-saving device for a multi-system compound machine tool according to claim 2, characterized in that: The milling spindle rotating axis system (C3) also includes a milling split axis system (B) that performs an angle split rotation function.

4. The energy-saving device for a multi-system compound machine tool according to claim 2, characterized in that: The tool rack (S4) further includes a tool rack rotating axis system (C4) as a rotating axis system for rotating a rotating tool mounted on the tool rack (S4).

5. The energy-saving device for a multi-system compound machine tool according to claim 2, characterized in that: The invention is provided with an anti-vibration frame (S5) arranged between the main spindle (S1) and the auxiliary spindle (S2), and the anti-vibration frame (S5) includes an anti-vibration axis system (W1) as a transfer axis system for moving the anti-vibration frame (S5) along the Z-axis direction.

6. The energy-saving device for a multi-system compound machine tool according to claim 1, characterized in that: The processing condition group of the CNC control device (10) includes at least one of the following groups: The first set of transfer axis systems (X1, Y1, Z1, Z3, X2, Z2) and rotation axis systems (C1, C2, C3, C4) used by both the first system and the second system; The transfer axis system (X1, Y1, Z1) and the rotation axis system (C1, C3) of the first system are all used, and in the second system only the second group of the sub-spindle rotation axis system (C2) of the sub-spindle (S2) is used; The transfer axis system (Z3, X2, Z2) and the rotation axis system (C2, C4) of the second system are all used, and in the first system only the third group of the rotation axis system (C3) of the milling spindle (S3) is used; The transfer axis system (X1, Y1, Z1) and the rotation axis system (C1, C3) of the first system are all used, and in the second system only the fourth group of the tool holder X axis system (X2) as the transfer axis system of the tool holder (S4) is used; Using only the fifth set of the transfer axis system (X1, Y1, Z1) and the rotation axis system (C1, C3) of the first system; and Only the sixth set of the transfer axis system (Z3, X2, Z2) and the rotation axis system (C2, C4) of the second system is used.

7. The energy-saving device for a multi-system compound machine tool according to claim 1, characterized in that: The CNC control device (10) comprises: A processing program unit (11) controls each of the axis systems to perform processing operations on the workpiece; A PLC control unit (12) that identifies the machining condition group including the axis system to be used by analyzing the machining program of the machining program unit (11); and An I / O module (13) outputs a relay drive signal of the power supply device (20) based on the processing condition group signal provided from the PLC control unit (12).

8. The energy-saving device for a multi-system compound machine tool according to claim 7, characterized in that: The machining program section (11) derives an M code included in a machining program and applies an axis system signal to be used to a PLC control section (12) according to the M code.

9. The energy-saving device for a multi-system compound machine tool according to claim 7, characterized in that: The machining program section (11) applies the signals of the rotating axis system (C1, C2, C3, C4) of the spindle (S1, S2, S3, S4) to be used included in the machining program to the PLC control section (12), and the PLC control section (12) identifies the machining condition group including the signals of the rotating axis system (C1, C2, C3, C4) and applies it to the I / O module (13).

10. The energy-saving device for a multi-system compound machine tool according to claim 1, characterized in that: The relay is a B-contact type relay that releases the contact point according to the signal of the processing condition group applied by the CNC control device (10), wherein when it is in the A contact point, the standby power of the axis system driver module of the corresponding processing condition group is cut off; when it is in the B contact point, the standby power is supplied to the axis system driver module of the corresponding processing condition group.

11. The energy-saving device for a multi-system compound machine tool according to claim 10, characterized in that: The relay comprises: a first relay (31) connected to a first driver module (41) for supplying or cutting off standby power to a main spindle rotating axis system (C1) as a rotating axis system, a milling spindle X axis system (X1) as a transfer axis system, a milling spindle Y axis system (Y1) and a milling spindle Z axis system (Z1); a second relay (32) connected to a second driver module (42) for supplying or cutting off standby power to a secondary spindle rotating shaft system (C2) serving as a rotating shaft system; a third relay (33) connected to a third driver module (43) for supplying or cutting off standby power to a tool holder rotating shaft system (C4) serving as a rotating shaft system; a fourth relay (34) connected to a fourth driver module (44) for supplying or cutting off standby power to a tool holder X axis system (X2), a tool holder Z axis system (Z2) and a secondary spindle transfer axis system (Z3) as transfer axis systems; and A fifth relay (35) is connected to a fifth driver module (45) which supplies or cuts off standby power to a milling spindle rotating axis system (C3) serving as a rotating axis system.

12. The energy-saving device for a multi-system compound machine tool according to claim 11, characterized in that: The relay also includes a sixth relay (36), which is connected to a sixth driver module (46), and the sixth driver module (46) supplies or cuts off standby power to the tool changer arm axis system, the tool changer displacement axis system, the first tool magazine axis system and the second tool magazine axis system of the multi-system compound machine tool.

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