CN105448167B - Modular numerically controlled actual training device - Google Patents

Abstract

A modular numerical control training device, including a cabinet and an electrical part, the electrical part includes a power supply module, a numerical control device module, a travel switch module, a relay module, a feed module, a spindle module and an auxiliary module; the numerical control device modules are respectively connected to the travel switch Modules, relay modules, feed modules, spindle modules, and auxiliary modules are connected correspondingly; the cabinet includes an operation panel on the upper part of the bench and a storage cabinet on the lower part, and a protrusion for protection is provided on the top of the cabinet; the operation panel includes a power supply bus and Mounting brackets for mounting each module. The present invention can not only be used as a multi-functional teaching and scientific research instrument to realize the three functions of principle teaching, practical teaching, and numerical control fault detection instrument, but also can be used as peripheral function development equipment of numerical control device and fault diagnosis of numerical control device and peripheral devices Equipment.

Description

Modular CNC training device

technical field

The invention relates to a numerical control training device, in particular to a numerical control training device which can be used for training teaching and modularization of numerical control devices and peripheral device fault diagnosis equipment.

Background technique

With the popularization of the application of CNC machine tools, the requirements for the effective utilization of CNC machine tools are getting higher and higher. On the one hand, the reliability of CNC machine tools is required to be high. The NC training device can assist colleges and universities and vocational training institutions to add courses related to NC fault diagnosis and maintenance technology, improve the teaching quality of related courses, and train specialized NC maintenance personnel. The study found that there are two types of CNC training devices commonly used in the market: experimental bench type and electrical cabinet type. The experimental bench-type training device is easy to connect, which is helpful for learning circuit principles, but the overall shape and component selection are quite different from the real equipment, and it is difficult to understand the working status of the real equipment; the electrical cabinet-type training device can reflect the electrical connection It is used with real components, but it is not convenient for users to connect the circuit hardware.

Contents of the invention

The technical problem to be solved by the present invention is to provide a modular numerical control training device. During the teaching process, the device can not only reflect the use of electrical connections and real components, but also facilitate the connection operation between circuit hardware. Contribute to the learning of circuit principles in the teaching process.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

Design a modular numerical control training device, including a cabinet and an electrical part, the electrical part includes a power supply module, a numerical control device module, a travel switch module, a relay module, a feed module, a spindle module and an auxiliary module; the numerical control device The modules are correspondingly connected with the travel switch module, the relay module, the feed module, the spindle module and the auxiliary module respectively;

The cabinet includes an upper operation panel and a lower storage cabinet, and the top of the cabinet is provided with a protruding part for protection; the operation panel includes a power supply bus and mounting parts for installing the modules of the electrical part; The storage cabinet is used to place the electrical part modules that are not used when the modular numerical control training device is not operated or operated;

The cabinet is powered by a bus, the power module inputs 380V three-phase alternating current, and is connected to two sub-circuit breaker switches through the main circuit breaker switch, and the two sub-circuit breaker switches are respectively connected to the servo transformer and the control transformer, and the output The three-phase 220V alternating current and the single-phase 220V alternating current, together with the original 380V three-phase alternating current, constitute a power bus, and different power sources are isolated from each other, and each has a breaking switch; the power bus runs through the entire cabinet. Advantageously, the modules of the electrical part are installed side by side on the cabinet in any order.

Advantageously, the numerical control device module includes a PLC part, which can realize the training of software numerical control.

Advantageously, the analog voltage output port of the numerical control device module is connected to the analog voltage input port of the frequency converter in the spindle module through a twisted pair; the position encoder pulse output port of the spindle module is connected to the numerical control device module connected to the main shaft pulse input port; the PLC output terminal of the numerical control device module is connected to the switch input terminal of the main shaft module with a single-core wire, and the negative pole of the 24V DC power supply in the relay module is connected to the common terminal of the PLC output connection, the positive pole of the 24V DC power supply is connected to the input terminal of the DC power supply of the spindle module, that is, a PLC output circuit is formed, and the working state of the frequency converter is controlled through the PLC.

Advantageously, the common end of the normally open contact on the travel switch module is connected to the common end of the PLC input point, and the other end of the normally open contact on the travel switch module is connected to the PLC input point through a wire. The connection constitutes the PLC input circuit.

Advantageously, the speed and direction pulse output ports of the numerical control device module are connected to the speed and direction pulse input ports of the servo drive in the feed module through twisted pairs; the encoder position pulse output ports of the servo drive are connected to the The position pulse input port of the numerical control device module is correspondingly connected; the switch output port of the feed module is connected with the PLC input port of the numerical control device module with a single-core wire, and the common terminal of the feed module is connected with the The common end of the PLC input port is connected to form a PLC input loop; the PLC output end is connected to the input end of the feed module, the negative pole of the 24V DC power supply in the relay module is connected to the common end of the PLC output end, and the 24V direct current The positive pole of the power supply is connected to the input terminal of the power supply of the feed module to form a PLC output circuit, and the working status of each servo drive can be read through PLC control.

Advantageously, the numerical control device module is a numerical control device with pulse servo commands, and the feed module is a feed module composed of pulse command servo drives.

Advantageously, the numerical control device module is a numerical control device with analog voltage servo commands, and the feed module is a feed module composed of analog voltage servo drivers.

Advantageously, the mounting part is a sliding slot, and a sliding block corresponding to the sliding slot is arranged on the rear plate of each module of the electrical part.

The beneficial effects of the present invention are:

1. The present invention is simple in structure, easy to use, and strong in practicability; it can not only directly and truly reflect the structure of the numerical control electrical system, observe relatively fixed circuit principles, but also facilitate users to practice and connect circuit designs.

2. The present invention can not only be used as a multi-functional teaching and scientific research instrument, realize the three functions of principle teaching, practical teaching, and numerical control fault detection instrument, but also can be used as peripheral function development equipment of numerical control device, numerical control device and peripheral devices Troubleshooting equipment used.

3. The numerical control device module of the present invention includes a PLC part, which can not only realize the hardware numerical control training function, but also realize the software numerical control training function, which can make the numerical control training course more diversified and enriched, so that students can develop more comprehensively .

Description of drawings

Fig. 1 is the electric cabinet structural representation of the present invention;

Among them, 1 is the operation panel, 2 is the protrusion, 3 is the storage cabinet, 4 is the power supply bus, and 5 is the chute;

Fig. 2 is a schematic diagram of a power module and a power bus of the present invention;

Fig. 3 is a schematic diagram of the connection of the travel switch module of the present invention;

Fig. 4 is the connection diagram of relay module of the present invention;

Fig. 5 is the connection schematic diagram of feed module of the present invention;

Fig. 6 is a schematic diagram of the connection of the main shaft module of the present invention.

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the drawings and examples.

Embodiment 1: A modular numerical control training device, including a cabinet and an electrical part, the electrical part adopts a modular design, including a power supply module, a numerical control device module, a travel switch module, a relay module, a feed module, and a spindle module , auxiliary modules and other functional modules, the CNC device module includes the PLC part; each module has the same size, and can be installed side by side on the cabinet in any order, and can be installed on the cabinet according to the needs. Several modules can be combined to form a Complete CNC system electrical hardware, and increase or decrease the number of some modules according to the needs, for example, the number of servo modules can be determined according to the number of axes controlled by the CNC device, and the appropriate number of travel switch modules can be selected according to the number of PLC input points and output points and contactor load modules.

As shown in Figure 1, the upper part of the cabinet is provided with an operation panel 1, and the lower part of the cabinet is provided with a storage cabinet 3, which is used to place the electrical part modules that are not used when the modular numerical control training device is not operated or operated. , the top of the cabinet is provided with a protruding part 2 for protection; the numerical control design part includes a power supply bus 4 and two lateral chutes 5, and the rear board of each module of the electrical part is provided with a slider corresponding to the chute 5 for numerical control. During design, the slide blocks on the modules can be installed in the chute 5 for arrangement design.

The numerical control device module adopts the numerical control device of pulse servo command or the numerical control device of analog voltage servo command. If the numerical control device module chooses the numerical control device module of pulse servo command, it is equipped with the feed module composed of pulse command servo driver; if The numerical control device module adopts the numerical control device module of analog voltage command, and is equipped with the feed module composed of analog voltage servo drive. Both the numerical control device adopting the pulse servo command and the numerical control device adopting the analog voltage servo command can be made into modules and installed on the training device.

The device can realize both hardware and software CNC training functions; hardware: you can choose appropriate functional modules to build a CNC electrical control system, connect the power circuit between the cabinet and the module, and the signal line between the modules, including Servo command signal, limit switch input switch value, relay output switch value, etc. In terms of software: PLC programs and processing programs can be written to simulate auxiliary functions such as shifting and tool magazines controlled by PLC programs and the processing process controlled by processing programs. Diversification and richness of CNC training courses can be realized.

Each module of the device can obtain power from the cabinet, and the cabinet is a bus-type power supply. As shown in Figure 2, the power module inputs 380V three-phase alternating current, and connects two sub-circuit breaker switches through the main circuit breaker switch. The two sub-circuit breaker switches are respectively connected to the servo transformer and the control transformer, and output three-phase 220V AC and single-phase 220V AC, together with the original 380V three-phase AC, they form a power bus, different power sources are isolated from each other, and each has a breaking switch; power supply The bus runs through the entire cabinet.

As shown in Figure 3, when the device uses a travel switch module, connect the common end of the normally open contact on the travel switch module to the common end of the PLC input point, and connect the other end of the normally open contact to the PLC separately through a wire The input point can constitute the PLC input circuit. In addition, the travel switch for simulating overtravel detection can connect its normally closed contacts in series to the overtravel contact input point of the PLC output port.

As shown in Figure 4, when the device uses a relay module, connect the negative terminal of the switching power supply to the common terminal of the PLC output port through a single-core wire, and connect the section of the relay coil equipped with a plug-in terminal to the PLC output point through a wire to form a circuit, when the PLC output end is closed, the relay coil is energized and the electric shock is closed; the lead wire of the relay contact can be directly connected to the 220V load through a single-core wire, because one end of the relay contact has been connected to the phase line of the 220V power supply, so the load The other end is pre-connected to the neutral line of the 220V power supply, and the load can be turned on when the relay contact is closed. If the relay load is a three-phase contactor coil, the main circuit of the three-phase contactor can take three-phase 380V AC from the power bus to drive the response load.

As shown in Figure 5, when the device uses a relay module, the speed and direction pulse output port of the numerical control device module is connected to the speed and direction pulse input port of the servo drive in the feed module through a twisted pair; the encoder position pulse of the servo drive The output port is connected to the position pulse input port of the numerical control device; the power input port of the servo driver can take three-phase 220V AC power from the power bus; the single-core wire is used to connect the switch output port of the feed module to the PLC input port of the numerical control device module, And connect the common end of the feed module with the common end of the PLC input port to form a PLC input circuit; connect the PLC output end to the input end of the feed module, and use the 24V DC power supply in the relay module to connect the negative pole of the power supply to the PLC output Connect the common terminal of the terminal, connect the positive pole of the power supply to the input terminal of the 24V power supply of the feed module to form a PLC output circuit, and read the working status of each servo drive through PLC program control.

As shown in Figure 6, when the device uses the spindle module, the analog voltage output port of the numerical control device module is connected to the analog voltage input port of the frequency converter in the spindle module through a twisted pair; the position encoder pulse output port of the spindle module is connected to the The spindle pulse input port of the numerical control device is connected; the inverter power input terminal can take three-phase 220V or 380V AC power from the power bus; the PLC output terminal of the numerical control device is connected with the spindle module digital input terminal through a single-core wire, and a relay is used to For the 24V DC power supply in the module, connect the negative pole of the power supply to the common terminal of the PLC output terminal, and connect the positive pole of the power supply to the input terminal of the 24V DC power supply of the spindle module to form a PLC output circuit, and control the working status of the inverter through the PLC program.

Claims (5)

1. a kind of modular numerically controlled actual training device, it is characterized in that, including cabinet and electric part, the electric part includes power supply Module, numerical control device module, travel switch module, relay module, feeding module, main shaft module and supplementary module；The number Control apparatus module company correspondings with the travel switch module, relay module, feeding module, main shaft module, supplementary module respectively It connects；

The cabinet includes the operation panel on top and the placement cabinet of lower part, and the protrusion for protection is provided at the top of the cabinet Portion；The installed part of each module of the electric part is installed when the operation panel is including power bus and for operating；It is described Placement cabinet is used for the electric part module placed when the modular numerically controlled actual training device is not operated or do not used when operating；

The cabinet is bus type power supply, and the power module inputs 380V three-phase alternating currents, switched by main breaker, connects Two points of killer switches, described two points of killer switches connect slaving transformer and control transformer, export three-phase respectively 220V alternating currents are exchanged with single-phase 220V, together with former 380V three-phase alternating currents, are formed power bus, are mutually separated by between different electrical power From, and respectively there is section breaker；Power bus runs through the entire cabinet；

The numerical control device module includes PLC parts；

The analog voltage delivery outlet of the numerical control device module and the analog voltage input port of frequency converter in the main shaft module lead to Twisted-pair feeder is crossed to be connected；The position coder pulse delivery outlet of the main shaft module and the main shaft pulse of the numerical control device module Input port is connected；The PLC output terminals of the numerical control device module are led with the On-off signal end of the main shaft module with single Line connects, and the cathode of the 24V DC power supplies in the relay module is connected with PLC outputs common end, 24V DC power supplies Anode is connect with the main shaft module DC supply input, that is, forms PLC output loops, and the work of frequency converter is controlled by PLC Make state；

The common end of normally opened contact in the travel switch module is connected with the common end of the PLC input points, the row The other end of normally opened contact on journey switch module is connected by conducting wire with PLC input points, that is, forms PLC input circuits；

The speed of the numerical control device module, direction pulse delivery outlet and the speed of servo-driver, side in the feeding module It is correspondingly connected with to pulse input mouth by twisted-pair feeder；The encoder position pulse delivery outlet of the servo-driver and the numerical control The P-pulse input port of apparatus module is correspondingly connected with；The output switch parameter mouth of the feeding module and the numerical control device module PLC input ports be connected with single condctor, and the feeding module common end is connected with PLC input ports common end It connects, you can form PLC input circuits；PLC output terminals are connect with feeding module input terminal, the 24V direct currents in relay module Power cathode is connected with PLC output terminals common end, and the 24V DC power anodes are connected with feeding module power input It connects, you can form PLC output loops, the working condition of each servo-driver is read by PLC controls.

2. modular numerically controlled actual training device according to claim 1, it is characterized in that：Each module of electric part is with arbitrary Sequence is mounted on the cabinet side by side.

3. modular numerically controlled actual training device according to claim 1, it is characterized in that：The numerical control device module is uses pulse The numerical control device of formula servo instruction, the feeding module are the feeding module formed to pulse command servo-driver.

4. modular numerically controlled actual training device according to claim 1, it is characterized in that：The numerical control device module is simulation electricity The numerical control device of servo instruction is pressed, the feeding module is the feeding module formed with analog voltage servo-driver.

5. modular numerically controlled actual training device according to claim 1, it is characterized in that：The installed part is sliding slot, described Sliding block corresponding with the sliding slot is provided in the back plate of each module of electric part.