TWI739045B - Intelligent management method of machine tool - Google Patents

Abstract

A machine tool intelligent management system and its management method, which detect processing tools and store the tool parameters obtained by the detection in the electronic tag attached to the tool, and the tool is placed in the tool holder of the tool magazine of the machine tool However, the reader installed in the machine tool is used to receive the information in the electronic tag on the tool at the tool removal position in a non-contact manner. When the information in the electronic tag is judged to be inconsistent with the information in the machining program command, A controller sends out a control command to stop or drive the tool magazine to run, so that the correct tool is brought to the tool picking position to continue the processing program.

Description

Intelligent management method of machine tool

The invention relates to a numerical control machine tool; in particular, it refers to a machine tool intelligent management system and a management method thereof.

The known numerical control machine tool (Computerized Numerical Control, CNC) means that the computer plays the role of integrated control to realize Computer Aided Design (CAD) and Computer Aided Manufacture (CAM), and further through A machine tool that uses pre-edited precise instructions to automatically perform various types of cutting.

The aforementioned precise instructions refer to the process of inputting machining program instructions into the memory of the numerical control system, compiling and calculating by computer, and transmitting the information to the drive to drive the motor through the displacement control system to cut the designed part. The aforementioned machining program instructions Contains movement instructions and other auxiliary instructions that need to be used in the processing process. The auxiliary instructions include functional instructions with a certain meaning of actions or functions composed of address codes (English letters) and two numbers, common functional instructions Including G function (preparation function), M function (auxiliary function), T function (tool function) and so on.

In the application practice of known CNC machine tools, practitioners first perform multiple inspections and corrections in the processing workshop (Processing workshop) for various types of tools required for cutting processing, and use handwriting or paper for the detected and corrected tools. Tool number programming and classification management are carried out by bar code, and then the detected and calibrated tools are placed on the tool cart for Take it to the processing site. At the processing site, the practitioners place the tools on the tool cart one by one in the tool holders with the tool numbers on the tool magazine of the CNC machine tool according to the processing program instructions. Take "T15" in the processing program instructions as an example. , Which means that the tool with No. 15 brought from the processing workshop to the processing site should be placed in the tool holder with No. 15 in the tool magazine, so that the CNC machine tool can correctly take the tool when executing the processing program instructions. Cut the workpiece to be processed.

However, in practice, there is a possibility that handwriting or paper bar codes are used to write tool numbers and classified management of knives. There is a possibility that handwriting recognition is not easy or writing errors, and paper bar codes are easy to be stained in an oily environment. Therefore, the existing The way of writing tool numbers and sorting management of tools by handwriting or paper bar codes is not perfect.

In addition, during the process of taking the tools out of the tool cart and placing them in the tool holder of the tool magazine, if the practitioner does not observe it, the position of the tool may be misplaced, for example, in the tool holder of No. 15 in the tool magazine. Put it as the tool that has been tested and corrected and is numbered 14. When the error is not found and enters the processing program, the tool magazine will operate according to the processing program instructions and make it list the number 15 tool holder together with the No. When the 14th tool arrives at the tool removal position, the wrong 14th tool will be used. In this case, the size of the workpiece after cutting does not meet the processing requirements and is discarded. At the worst, the tool may improperly collide with the workpiece and cause the tool to be processed. Or the to-be-processed material is broken and needs to be shut down to eliminate the problem, which will seriously delay the processing schedule.

In view of this, the purpose of the present invention is to provide an intelligent management method for machine tools, which can effectively arrange and manage the tools and ensure that the tools can be correctly selected for processing and use.

In order to achieve the above objective, the present invention provides a machine tool intelligent management system including a CNC machine tool with a spindle, a tool magazine and a controller. One end of the spindle is equipped with a tool, the tool magazine contains a plurality of tools, and the controller has built-in machining program instructions. ; In addition, most of the electronic tags are attached to a corresponding tool, and each electronic tag has the tool parameters corresponding to the tool, and a reader receives the tool of the electronic tag on the tool within the reading range in a non-contact manner parameter.

The intelligent management method of the present invention is to first detect a large number of tools individually, and store the detected tool parameters in a corresponding electronic tag. The tool parameters include non-repetitive machining tool numbers; The tools with electronic tags are placed in the tool magazine; the operation of the tool magazine is controlled according to the machining program instructions, and the selected tool is transported to the tool picking position according to the executed tool number in the machining program instructions; then it is read in the tool picking position The tool parameters of the electronic tag attached to the tool and compare whether the machining tool number in the tool parameters read is consistent with the execution tool number in the machining program command. If the comparison is not consistent, the controller will issue a control command .

In another intelligent management method, the tools are also detected individually and the detected tool parameters are stored in an electronic tag. The tool parameters include non-repetitive machining tool numbers; then the tools attached with the electronic tag Placed in the tool magazine; after reading the electronic tags on each tool, the processing tool number linked to the executed tool number in the processing program command is stored in the controller; and the tool fetching mechanism is based on the processing program command The execution tool number grabs the tool whose machining tool number is located in the tool magazine and the information of the execution tool number is linked.

The effect of the present invention is to avoid the occurrence of machining errors caused by the practitioners inadvertently placing the tool in an incorrect position of the tool holder.

〔this invention〕

1: Tool

2: Tool setting instrument

3: computer

4: Knife handle

5: Transmitter

6: Electronic label

7: CNC machine tool

7A: Tool magazine

7B: Tool holder

7C: Controller

7D: Operation panel

7E: Spindle

7F: Workbench

7G: display screen

8: Objects to be processed

9: Reader

10: Processing machine

10a: Spindle

10b: Controller

10c: Tool change arm

11: Tool magazine

11a: Tool holder

12: Take the knife mechanism

S1: Inspection tool

S2: Store tool information

S3: Tool placement

S3-1: Tool and tool holder information collection

S4: Tool information read

S5: Comparison information

S6: Tool change operation

S7: Tool information read

S8: Tool information link and storage

S9: Take the knife

Fig. 1 is a flowchart of a machine tool intelligent management method according to the first preferred embodiment of the present invention; Fig. 2 is a schematic diagram of equipment and equipment used in part of the process of the above-mentioned intelligent management method; Fig. 3 is a first preferred embodiment of the present invention A perspective view of the machine tool in the machine tool intelligent management system; Fig. 4 is a side view of the machine tool in Fig. 3 with some components omitted; Fig. 5 is a front view of the cutter head of the machine tool in Fig. 3; Fig. 6 is a second comparison of the present invention A flowchart of the machine tool intelligent management method of the preferred embodiment; FIG. 7 is a schematic diagram of the machine tool system applied by the machine tool intelligent management method of the third preferred embodiment of the present invention; FIG. 8 is the third preferred embodiment of the present invention The flow chart of the intelligent management method of the machine tool.

The machine tool intelligent management system and management method of the present invention can effectively arrange and manage the tools used for processing, and can ensure that the tools can be selected correctly to prevent improper follow-up procedures, such as The wrong tool is used for processing, or the tool improperly collides with the object to be processed. In order to explain the present invention more clearly, the preferred embodiments are described in detail in conjunction with the drawings as follows.

Please refer to FIG. 1, the intelligent management method for machine tools of the first preferred embodiment of the present invention mainly includes the steps of detecting tool S1, storing tool information S2, tool placement S3, tool information reading S4, and comparing information S5. The following Please cooperate with the diagrams shown in Figure 2 to Figure 5. Here is the description of each step and the equipment and equipment required to achieve this step.

In terms of detecting tool S1: Since the machine tool often needs to use a variety of different types and specifications of tools during the machining process, the practitioner must make pre-preparation for the tool 1 that needs to be used in the machining process, including various items for the tool 1. Measurement and setting. In practice, instruments commonly used to detect tool 1, such as tool setting device 2. The measurement items include but are not limited to tool length measurement and tool diameter measurement, and the setting is based on the measurement results. For further adjustments, such as tool length compensation, tool zero setting, tool offset value setting, etc., the measurement and setting results of the aforementioned tool are stored in the computer 3 in the form of parameters. It should be noted that the tool 1 in the aforementioned inspection operation is often inspected by installing it to the handle 4; in addition, the inspection operation of the tool 1 is usually performed in the processing workshop, which refers to the processing workshop based on the task requirements. A specific area is planned on the work site. The processing workshop in this embodiment refers to a place where most tools and related testing instruments are stored inside.

In terms of storing tool information S2: Practitioners use the computer 3 and the transmitter 5 (Transmitter) and antenna (Antenna) (not shown in the figure) in the computer 3 and the radio frequency identification system (Radio Frequency Identification System, RFID system) in the processing workshop. The above-mentioned tool parameters obtained by detecting the tool 1 and stored in the computer 3 are sent to and stored in an electronic tag 6 taking a read-write radio frequency identification tag as an example in a non-contact manner. The tool parameters include tool specifications and cutting parameters. The electronic tag 6 is attached to a corresponding tool 1 by combining with the tool holder 4, and more specifically, each electronic tag 6 stores The tool information of is exactly the detection result of the attached target tool 1, and each electronic tag 6 has a degree of recognition due to its unique machining tool number.

In terms of tool placement S3: After the practitioner completes the pre-preparation of the tools required for processing in the machining workshop, the tool 1 and the tool handle 4 on it should be placed in the tool holder of the tool magazine 7A of the CNC machine tool 7 In 7B, according to the number on the tool holder 7B, there will be a corresponding The tool 1 of the machining tool number is placed in the tool holder 7B. As shown in Figure 5, the tool magazine 7A is marked with numbers "1" to "21" in a counterclockwise direction on the disk surface, which means that the tool magazine 7A can accommodate 21 tools 1 with different specifications. After all the tools have been put on the shelf, it means you can enter the processing program. The aforementioned tool magazine 7A may be a disc-type tool magazine or a chain-type tool magazine capable of accommodating more tools.

In terms of tool information reading S4: when the practitioner starts the machining program through the operation panel 7D of the controller 7C of the CNC machine tool 7, the tool 1 installed at one end (bottom end) of the spindle 7E will be based on the controller 7C The built-in processing program command starts high-speed rotation and displacement, and the to-be-processed object 8 fixed on the worktable 7F is processed accordingly. Since a workpiece 8 usually needs to go through multiple processing procedures such as milling, cutting, drilling, or threading to produce a finished product, the tool 1 installed at one end of the spindle 7E is compiled according to the processing program instructions The execution tool number is replaced. For example, when the program is executed to the compiled execution tool number "T15", it means that one end of the spindle 7E in the next processing program should be equipped with a tool selected from the position of the number "15" on the tool magazine 7A 1. At the same time, the tool magazine 7A will be controlled to operate and transport the selected tool to the tool picking position. Before the selected tool is grabbed, the reader 9 installed in the CNC machine tool 7 will The tool parameters of the electronic tag 6 attached to the tool 1 within the reading range are received in a non-contact manner. Taking the tool magazine 7A in FIG. 5 as an example, the tool removal position is located at the bottom edge of the disk surface, and the reading range of the reader 9 refers to the distance from the reader 9 to the tool 1 at the tool removal position.

In terms of comparison information S5: the controller 7C will automatically compare the machining tool number in the tool parameter received by the reader 9 with the execution tool number in the built-in machining program command, and compare the machining tool When the number and the execution tool number do not match, the control command is issued. On the contrary, if the compared processing tool number matches the execution tool number, the controller 7C will continue to execute the subsequent processing program according to the processing program command. For example, when the machining program instruction is executed to the compiled execution tool When the number is "T15", the tool magazine 7A is controlled to move to the tool holder 7B marked with the number "15" on the disk according to the machining program command, and the tool 1 placed in the tool holder 7B comes to take the tool together. However, when the reader 9 receives the tool parameter in the electronic tag 6 attached to the tool 1 at the tool removal position, but it contains the machining tool number of "T14", the controller 7C will send it out immediately because of the error found in the comparison. Control command. In one embodiment, the aforementioned control command can be a stop command, so as to prevent the tool that is actually programmed as "T14" from being mistaken for the tool numbered "T15" and being used for cutting, which may cause problems after cutting. The size of the workpiece does not meet expectations or improperly collides with the workpiece to be processed. The aforesaid situation occurred due to the misplacement of the tool position due to inadvertence when the practitioner moved the tool from the processing workshop and placed it in the tool holder of the tool magazine. It is also noted that the comparison of the machining tool number and the execution tool number is not limited to the comparison of numbers, and can also be used for comparison in other code methods.

Therefore, the present invention receives the tool parameters in the electronic tag 6 attached to the tool 1 at the tool removal position through the reader 9 and the comparison function of the controller 7C, so that the selected tool can be identified in time before being captured Check whether there is any misplacement of the tool position to further ensure that the tool can be correctly selected for processing. In addition, the identification number of the tool is achieved through the electronic tag 6 having a non-repetitive machining tool number, which improves the inconvenience caused by the known handwriting or paper bar code method for the tool number programming and classification management of the tool.

It should be noted that, in addition to issuing control commands, the controller 7C can also be assigned to instantly display the information of the error found in the comparison on the display screen 7G of the operation panel 7D, or to remind by sound or light. The function that the practitioner pays attention to, so that the practitioner can solve the problem in time. Furthermore, the controller 7C can also send real-time information through a mobile application to a specific counterpart who has an electronic device that can read the information for monitoring.

The control command in the above embodiment is used to control the shutdown. However, in other embodiments, the control command may not be used to control the shutdown but used for other control. For example, when the control command includes the execution tool in the machining program command When the machining tool number matches the tool number, it can be used to control the operation of the tool magazine 7A and bring the correct tool 1 to the tool removal position. In order to achieve the foregoing objective, the present invention provides a second preferred embodiment of the intelligent management method for machine tools. The adjustment is made under the framework of the method of the above first preferred embodiment. Please refer to Figure 6, where after the tool is placed S3 and before the tool information is read S4, the tool magazine 7A is manipulated to rotate in an indexing manner and read The device 9 receives the tool parameters of the electronic tag 6 attached to all the tools 1 through the tool removal position one by one and transfers them to the controller 7C. The aforementioned tool parameters include non-repetitive machining tool numbers. At the same time, the controller 7C The number on the tool holder 7B and the machining tool number of the tool 1 stored in the tool holder 7B are linked and recorded. For example, when the tool magazine 7A runs to the number "15" of the tool holder 7B When it reaches the tool removal position, the machining tool number in the electronic tag 6 received by the reader 9 should be "T15" if it is correct, and the controller 7C will set the tool holder 7B number "15" and the machining tool of tool 1 No. "T15" generates link and record. This step is defined as tool and tool holder information collection S3-1.

When the practitioner completes the S3-1 operation of collecting tool and tool holder information, and starts the CNC machine tool 7 through the operation panel 7D to perform the processing program, the reader 9 in the normal state receives the tool 1 at the tool removal position. The machining tool number in the attached electronic label 6 should match the number of the tool holder 7B that is also located at the tool removal position. However, if the practitioner moves the tool from the machining workshop and places it in the tool holder of the tool magazine In the process, when the tool position is misplaced due to negligence, the machining tool number received by the reader 9 will be compared by the controller 7C and found to be inconsistent with the executed tool number in the machining program command. At this time, the controller 7C The correct tool found in the database is placed in the tool holder of which number, and accordingly, a control command containing the machining tool number that matches the tool number is issued, and the tool magazine 7A is controlled with the shortest operating stroke. Will be correct The tool 1 is transported to the tool taking position so that the spindle 7E of the CNC machine tool 7 can take the correct tool. The aforementioned step of bringing the correct tool to the tool taking position is defined as a tool change operation S6. At this point, the machining program can be continued without stopping the machine.

It can be seen from the above various embodiments that the management system of the present invention for realizing the intelligent management method includes at least a CNC machine tool 7, an electronic label 6, and a reader 9. The CNC machine tool 7 also includes a spindle 7E, a tool magazine 7A, and a control器7C; and if the management system further includes a transmitter 5, the management method will be more complete.

In addition, the present invention further provides an intelligent management method, please cooperate with FIG. 7, which is applied to a machine tool system including a processing machine 10, a tool magazine 11 and a tool taking mechanism 12. The tool 1 is installed at one end of the main shaft 10a, and the controller 10b has a built-in processing program command for executing the tool number; the tool magazine 11 is independent of the processing machine 10 and has a plurality of tool holders 11a that can accommodate various types of tools. For such tools, each tool position has a unique number; and the tool picking mechanism 12 grabs the appropriate tool from the tool magazine 11 according to the machining program instructions.

Please refer to Figure 8, the method includes the steps of detecting tool S1, storing tool information S2, tool placement S3, reading tool information S7, connecting and storing tool information S8, and taking tool S9. Among them, step S1 and step S2 The same as the above embodiment, but the tool 1 in step S3 is placed in a different tool holder 11a of the tool magazine 11 belonging to a large tool storage structure.

The method of this embodiment is in terms of tool information reading S7: it means that the reader 9 installed at the front end can read the positions in each tool holder 11a one by one in a non-contact manner by manipulating the moving mechanism (not shown). Store the tool parameters attached to the electronic tag on tool 1.

In terms of tool information connection and storage S8: When the reader 9 completes the reading of each tool information, the controller 10b will automatically set the tool position, the machining tool number in the tool parameters, and the execution tool number in the machining program command. Make a link to the information and save it.

In terms of tool retrieval S9: the tool retrieval mechanism 12 receives the execution tool number in the machining program command from the controller 10b, and further automatically grabs the tool 1 whose machining tool number is located in the tool magazine 11 and the execution tool number information is linked. It must be noted that in this step S9, the tool-taking method of the tool-taking mechanism 12 is based on the machining tool number in the electronic tag on the tool, not based on the tool position, so the tool position can be quickly found Reduce time. The tool taking mechanism 12 brings the obtained tool to the processing machine 10 to continue the subsequent processing procedure. When the processing machine 10 includes a tool changer arm 10c, the tool taking mechanism 12 transfers the tool to the tool changer arm 10c for change. The tool arm 10c exchanges it with the tool on the main shaft 10a, and the tool removed from the main shaft 10c is placed in the empty tool position of the tool magazine 11 through the tool change arm 10c and the tool removal mechanism 12.

Thereafter, step S7 and step S8 are restarted to wait for the next execution of step S9. At this point, it can also avoid the occurrence of processing errors caused by the practitioners who place the tool in an incorrect position due to inadvertence. It should also be noted that, based on the technology of this embodiment, it can be applied to multiple machine tools and multiple tool magazines at the same time.

The above are only the preferred and feasible embodiments of the present invention. Any equivalent changes made by applying the specification of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

S1: Inspection tool

S2: Store tool information

S3: Tool placement

S4: Tool information read

S5: Comparison information

Claims (4)

An intelligent management method for a machine tool. The machine tool includes a spindle, a tool magazine, a controller, and a reader. One end of the spindle is used for installing tools. Built-in processing program instructions; the intelligent management method includes the following steps: each tool is detected, and the tool parameters obtained from the detection are stored in a corresponding electronic tag. The tool parameters include non-repetitive machining tool numbers ; Place the tools with electronic tags in the tool magazine; control the operation of the tool magazine according to the machining program instructions, and transport the selected tools to the tool picking position according to the execution tool number in the machining program instructions; this read The picker receives the tool parameters of the electronic tag attached to the tool within the reading range in a non-contact manner. The aforementioned read range refers to the distance from the reader to the tool located at the tool picking position of the tool magazine; Check whether the machining tool number in the read tool parameter is consistent with the execution tool number in the machining program command. If the comparison is not consistent, the controller sends a control command. The intelligent management method for a machine tool as described in claim 1 includes the use of a transmitter that transmits the detected tool parameters including the machining tool number to the electronic tag of the corresponding tool and stores it in a non-contact manner. The intelligent management method of the machine tool as described in claim 1, including after all the tools are placed in the tool magazine, the tool magazine is controlled to rotate for a circle, and the reader receives the tool removal position one by one in a non-contact manner. All the tools attached to the tool parameters of the electronic tags, the controller stores the tool parameters of all the tools received by the reader; when the controller sends the control command, the control command includes the execution of the machining program command Processing tool with matching tool number No., the tool magazine runs and transports the tool with the machining tool number that matches the executed tool number in the machining program command to the tool picking position. The intelligent management method of the machine tool described in claim 3 is to control the tool magazine to run one circle in an indexing manner.

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