TWM485116U - Quick automatic tool selection and tool change system - Google Patents

Description

Fast automatic tool selection and tool change system

The utility model relates to an automatic tool selection and tool change system suitable for a machine tool, in particular to a fast automatic tool selection and tool change system integrating a tool magazine and a tool change mechanism.

The existing CNC (Computer Numerical Control) processing machine is configured to quickly perform a plurality of different types of processing methods, so that the existing CNC machining opportunity is coupled to an automatic tool change system, which includes a tool magazine and a tool change device, the automatic The tool change system mainly takes out the tool required for machining the CNC machining machine from the tool magazine, and then sends it to the clamping head of the spindle of the CNC machining machine by the tool change device, and the replaced tool is removed by the tool change device. It is sent back to the tool magazine to complete the replacement steps for different tools during machining. The tool changing device comprises a driving motor, an angle sensor and a punching cylinder, wherein the angle sensor detects an angle of rotation of the tool changing device, so that the automatic tool changing system determines whether the tool changing device rotates to the positioning point .

Since the CNC machine must process the machining program and tool change program corresponding to the workpiece before machining any workpiece, it is necessary to input the program of the automatic tool change system to the CNC machine, and fine-tune the speed or time with the on-site operation. For example, the tool position, the rotation angle of the tool changer, and the operating time of the cutter or the cutter of the cutter cylinder, etc., the operator needs to monitor the machining status of the CNC machine and the signal of the sensor return of the tool changer. It is correct, and there are problems with complicated processing procedures and inconvenient use.

As mentioned above, when the existing CNC machining machine is connected to the automatic tool change system, it is necessary to additionally write the machining program, the tool change program and the tool magazine program, and it is necessary to monitor whether the angle sensor returns the signal correctly, and the processing procedure is complicated and Inconvenient problem, the main purpose of the present invention is to provide a fast automatic tool selection and tool change system, mainly for providing a control device in the automatic tool selection and tool change system, and the control device has a tool selection/tool change program. With the program of the tool magazine, after the processing machine sends out the selection/changing tool signal of the required tool, the automatic tool selection and tool change system can complete the work of replacing the tool and return the completed signal to the processing machine, simplifying the existing processing machine. The machining program and the tool change program solve the problem of complicated processing and inconvenient use when the existing CNC machining machine is connected to the tool magazine.

The main technical means for achieving the foregoing objectives is that the fast automatic tool selection and tool change system mainly comprises a control device and an encoder, wherein: the control device comprises a control module, an output/input signal module, a selection knife motor control unit, a cutter cylinder control unit, a tool change motor control unit and an encoder signal receiving unit, the control module is respectively connected with an output/input signal module, a knife selection motor control unit, and a cutter The cylinder control unit, the tool change motor control unit and the encoder signal receiving unit are electrically connected, the output/input signal module is a controller connected to the external processing machine, and the knife selection motor control unit is connected to a selection knife motor, the The cutter cylinder control unit is connected to a cutter cylinder, and the cutter motor control unit is connected to a tool change mechanism, the tool change mechanism includes a tool change motor; and the encoder includes a detection end and a signal end, the detector The measuring end is connected to the tool changing mechanism, and the signal end is electrically connected to the encoder signal receiving unit.

By using the fast automatic tool selection and tool change system composed of the foregoing components, the output/input signal module of the control device is electrically connected with the controller of the external processing machine to receive the selection/changing tool signal or returning the tool change completion signal. The control module stores a position and a parameter of a plurality of tools of the tool magazine to respectively drive the tool change motor of the tool selection motor and the tool change mechanism, and returns the rotation angle of the tool change mechanism and the cutter cylinder by the encoder. The loose knife or the knife action determines whether the tool change operation is completed. The controller of the external processing machine only needs to send the tool number to be replaced or send the tool change signal, and the tool can be selected by the control device and the tool change mechanism is completed. For tool change work, the controller of the external processing machine does not need to write additional tool selection and tool change programs to solve the problem of complicated processing procedures and inconvenient use when the existing CNC machining machine is connected to the tool magazine.

Referring to FIG. 1 and FIG. 2, a control device 10 and an encoder 20 are mainly included. The control device 10 is electrically connected to the encoder 20, and the control device 10 is respectively associated with An upper controller 30, a selector motor 40, and a tool changer motor 51 are electrically connected to a single cutter cylinder 60. The tool changer motor 51 is disposed in a tool change mechanism 50 for driving a knife. A plurality of tools of the library (not shown) rotate, and the required tool is taken out by the tool change mechanism 50, and the encoder 20 is coupled to the tool change mechanism 50 to detect the rotation angle of the tool change mechanism 50 and return it. Signal to control device 10. The upper controller 30 refers to a controller provided in the external processing machine. In the preferred embodiment, the control device 10 refers to a frequency converter or a frequency conversion device.

The control device 10 includes a control module 11, an output/input signal module 12, a knife selection motor control unit 13, a tool cylinder control unit 14, a tool change motor control unit 15, and an encoder signal receiving unit. 16. The control module 11 is electrically connected to the output/input signal module 12, the tool selection motor control unit 13, the tool cylinder control unit 14, the tool change motor control unit 15, and the encoder signal receiving unit 16, respectively; The input signal module 11 is electrically connected to the upper controller 30 to receive the selection/tool change signal sent by the upper controller 30, or to return the tool selection/tool change completion signal to the upper controller 30; The control unit 13 is electrically connected to the knife selection motor 40 to control the operation angle, position or time of the knife selection motor 40; the cylinder control unit 14 is electrically connected to the cutter cylinder 60 to control the cutter cylinder 60. The tool change motor control unit 15 is electrically connected to the tool change motor 51 to control the rotation angle or time of the tool change motor 51.

As shown in FIG. 2 , the encoder 20 includes a detecting end 21 and a signal end 22 , and the detecting end 21 is connected to the tool changing mechanism 50 or the tool change motor 51 to detect the rotation angle thereof. The signal terminal 22 is electrically connected to the encoder signal receiving unit 16 to return the angle signal.

As shown in FIG. 2, the output/input signal module 12 includes an output signal 埠121 and an input signal 埠122. The output signal 埠121 and the input signal 埠122 respectively have a plurality of contacts, and the contacts are respectively connected to The upper controller 30.

The output signal 埠121 includes a fault/unfinished contact, a completion signal contact, a tool magazine contact and a tool change contact. The signal of the fault/unfinished contact represents a tool change, a tool selection or a tool change. If the fault occurs in the process or the specified action is not completed, the signal of the completion signal contact represents the action of changing the tool, selecting the knife or the knife according to the requirement of the upper controller 30, and the tool holder contact and the tool change contact are respectively connected with one another. The electromagnetic switch 70 is connected between a three-phase AC power source and the tool selection motor 40, and between the three-phase AC power source and the tool change motor 51, and the tool holder contact and the tool change point are transmitted through The electromagnetic switches 70 respectively control the power supplied to the selector motor 40 and the tool change motor 51. The control device 10 generates a corresponding signal according to an operation such as a tool change, a knife selection or a knife punching, and sends the signals to the upper controller 30 from the contacts of the output signal 埠121, respectively.

The input signal 埠122 includes a plurality of tool selection contacts for receiving the tool selection signals transmitted by the host controller 30, and the selection tool signal contacts are 2 ⁰ , 2 ¹ , 2 ² , 2 ³ and 2 ⁴ , respectively. From the binary input, you can transfer and select 1+2+4+8+16=31 tools. If you need to increase the number of tools in the magazine (such as 32 or more), you can add an I/O interface card. The I/O interface card is electrically connected to the control module 11 to increase the number of selected tool contacts of the input signal 埠122. The input signal 埠122 provides a start contact, a stop contact, an emergency stop (close stop) contact, a sway contact, a positive transfer point, a reverse contact, and a tool change/tool change Mode contacts, which are control signals for receiving the upper controller 30. If additional functions or control contacts are to be added, another I/O interface card (not shown) may be added, the I/O The interface card is electrically coupled to the control module 11 to increase the number of contacts for other functions of the input signal 埠122.

In addition, the other signal contacts of the input signal 埠122 (such as the upper signal of the cutter cylinder, the middle signal of the cutter cylinder, the lower signal of the cutter cylinder, the ATC cutter signal, the ATC origin signal, the ATC brake signal, the ATC spindle loose knife) The signal, the tool magazine number signal, the tool magazine origin signal, the tool end tool signal, the tool return signal and the return tool signal) are an operation panel (not shown) connected to the machine for manual operation. .

Referring to FIG. 3, the control device 10 performs the following steps: inputting a function command requirement (such as a tool change or a tool selection) to the upper controller 30 (S1); the upper controller 30 sends a tool change signal or a tool selection signal. (S2); The control device 10 receives the tool change signal or the tool selection signal (S3); the control device 10 determines the tool change or the tool selection according to the signal (S4); if the tool change, the tool change motor is driven according to the tool change signal 51 and the tool cylinder 60 operate (S5); the tool change motor 51 and the tool cylinder 60 operate according to a desired angle or time (S6); the encoder 20 detects the operating angle of the tool change mechanism 50 or the tool change motor 51, and Returning to the control device 10 (S7); the control device 10 determines, according to the return signal, whether the angle returned by the encoder 20 reaches the set value required for the tool change signal (S8); if the return angle reaches the set value, it represents the tool change Completion (S9); sending a tool change completion signal to the upper controller 30 (S10); if the return angle of the foregoing step (S8) does not reach the set value, it represents that the tool change is not completed (S11); further determining the tool change operation time Whether it exceeds the set value (such as 3 seconds) (S12), if it is less than the set value, return to (S5) to continue to drive the tool change. If the operation time is greater than the set value, it indicates that an abnormality has occurred, that is, an alarm is issued and the operation is stopped, and the warning signal is returned to the upper controller 30 (S13); if the foregoing step (S4) is a tool selection, then The knife selection motor 40 is driven according to the selection signal (S14); the cutter motor 40 operates according to the selected tool number (S15); the cutter selection is completed (S16); and the knife selection completion signal is sent to the upper controller 30 (S17).

It can be seen from the above that the control device 10 receives the change/selection tool signal, drives the operation of the knife selection motor 40, the tool change motor 51 and the tool cylinder 60, and after starting the tool selection and completing the tool change operation, the encoder is used. The angle of 20 back passes determines whether the tool change operation is completed, and then returns the tool change completion signal. The external processing machine only needs to send the required tool number and the tool change signal, and the required tool change work can be completed by the control device 10, the external The processing machine does not need to write additional processing programs and tool change programs to solve the problem of complicated processing and inconvenient use when the existing CNC machining machine is connected to the tool magazine.

10‧‧‧Control device
11‧‧‧Control module
12‧‧‧Output/input signal module
121‧‧‧Output signal埠
122‧‧‧Input signal埠
13‧‧‧Selecting knife motor control unit
14‧‧‧Cutter cylinder control unit
15‧‧‧Changer motor control unit
16‧‧‧Encoder signal receiving unit
20‧‧‧Encoder
21‧‧‧Detection
22‧‧‧ Signal end
30‧‧‧Upper controller
40‧‧‧Selecting knife motor
50‧‧‧Tool changer
51‧‧‧Changer motor
60‧‧‧Cutter cylinder
70‧‧‧Electromagnetic switch

1 is a block diagram of a circuit of a preferred embodiment of the present invention. 2 is a schematic view of a preferred embodiment of the present invention. 3 is a flow chart of a preferred embodiment of the present invention.

10‧‧‧Control device

11‧‧‧Control module

12‧‧‧Output/input signal module

121‧‧‧Output signal埠

122‧‧‧Input signal埠

13‧‧‧Selecting knife motor control unit

14‧‧‧Cutter cylinder control unit

15‧‧‧Changer motor control unit

16‧‧‧Encoder signal receiving unit

20‧‧‧Encoder

30‧‧‧Upper controller

40‧‧‧Selecting knife motor

50‧‧‧Tool changer

51‧‧‧Changer motor

60‧‧‧Cutter cylinder

Claims (10)

A fast automatic tool selection and tool changing system mainly comprises a control device and an encoder, wherein: the control device comprises a control module, an output/input signal module, a knife selection motor control unit, and a knife a cylinder control unit, a tool change motor control unit and an encoder signal receiving unit, wherein the control module is respectively connected with an output/input signal module, a knife selection motor control unit, a cutter cylinder control unit, a tool change motor control unit, and The encoder signal receiving unit is electrically connected, and the output/input signal module is an upper controller connected to the external processing machine, and the selected knife motor control unit is connected to a selector motor, and the cutter cylinder control unit is connected with a knife a cylinder, the tool changer control unit is connected to a tool change mechanism, the tool change mechanism includes a tool change motor; and the encoder includes a detection end and a signal end, the detection end is connected to the tool change mechanism, The signal end is electrically connected to the encoder signal receiving unit. The fast automatic tool selection and tool change system as claimed in claim 1, the output/input signal module includes an output signal 埠 and an input signal 埠, the output signal 埠 and the input signal 埠 respectively have a plurality of contacts, each of which is connected The point is connected to the upper controller. The fast automatic tool selection and tool change system described in claim 2, the output signal 埠 includes a fault/unfinished contact, a completion signal contact, a tool magazine contact and a tool change contact, the fault/not The completion of the contact indicates that the fault has occurred or the specified action has not been completed. The completion signal contact represents the completion of the specified action. The tool magazine contact and the tool change contact are respectively connected to an electromagnetic switch, and the electromagnetic switches are respectively connected to an AC power supply and The cutter motors are between the AC power source and the tool changer motor. In the fast automatic tool selection and tool change system described in claim 2 or 3, the input signal 埠 includes a plurality of tool selection contacts, and the selection tool signal contacts are respectively 2 ⁰ , 2 ¹ , 2 ² , 2 ³ And 2 ⁴ , and can further add an I/O interface card, the I/O interface card is electrically connected with the control module to increase the number of tool selection contacts of the input signal 。. According to the fast automatic tool selection and tool change system described in claim 4, the input signal 埠 provides a start contact, a stop contact, an emergency stop (close stop) contact, a sway contact, and a positive Transfer point, a reverse contact and a tool magazine/tool change mode contact, and another I/O interface card can be further added. The I/O interface card is electrically connected to the control module to increase the input signal. The number of contacts. The quick automatic tool selection and tool change system according to any one of claims 1 to 3, wherein the control device is a frequency converter or a frequency conversion device. The quick automatic tool selection and tool change system as claimed in claim 4, wherein the control device is a frequency converter or a frequency conversion device. The fast automatic tool selection and tool change system as claimed in claim 5, wherein the control device is a frequency converter or a frequency conversion device. The fast automatic tool selection and tool change system according to any one of claims 1 to 3, wherein the control device performs the following steps: receiving a tool change signal or a tool selection signal; performing a tool change or a knife selection according to the signal judgment; If the tool is changed, the tool changer and the tool cylinder are driven according to the tool change signal; an encoder detects the operating angle of the tool change mechanism or the tool change motor, and returns it to the control device; Whether the angle reaches the set value required for the tool change signal; if the operating angle reaches the set value, it means that the tool change is completed, and the tool change completion signal is sent; if the operation angle does not reach the set value, it means that the tool change is not completed, then it is judged whether the operation time is If the set value is exceeded, if it is less than the set value, continue to drive the tool changer and the tool cylinder; if the running time is greater than the set value, an abnormality will be issued, then the warning will be issued and the action will be stopped, and the warning signal will be sent; if the above step is the tool selection, then The cutter selection signal drives the cutter motor to operate; the cutter motor operates according to the selected tool number; when the cutter is completed, the cutter selection signal is sent. For the fast automatic tool selection and tool change system described in claim 6, the control device performs the following steps: receiving a tool change signal or a tool selection signal; performing a tool change or a tool selection according to the signal; if the tool is changed, Driving the tool changer and the cutter cylinder according to the tool change signal; detecting the operation angle of the tool change mechanism or the tool change motor by an encoder and returning it to the control device; determining whether the operation angle reaches the tool change signal according to the return signal If the operating angle reaches the set value, it means the tool change is completed, and the tool change completion signal is sent out; if the operation angle is less than the set value, it means that the tool change is not completed, it is judged whether the running time exceeds the set value, if it is less than The set value continues to drive the tool changer and the tool cylinder; if the running time is greater than the set value, an abnormality is issued, the warning is issued and the action is stopped, and the warning signal is sent; if the above step is the tool selection, the tool selection is driven according to the tool selection signal. The motor operates; the tool selection motor operates according to the selected tool number; when the tool selection is completed, the tool selection completion signal is sent.