KR20120083984A

KR20120083984A - A big tool exchange method of auto tool exchange merchine megazine

Info

Publication number: KR20120083984A
Application number: KR1020110005253A
Authority: KR
Inventors: 유영재
Original assignee: 두산인프라코어 주식회사
Priority date: 2011-01-19
Filing date: 2011-01-19
Publication date: 2012-07-27

Abstract

PURPOSE: A large diameter tool of an automatic tool changing magazine replacing method is provided to prevent the crash generated during changing tools in an automatic tool changer. CONSTITUTION: A large diameter tool of an automatic tool changing magazine replacing method is as follows. A port where a large diameter tool mounted is recognized(S10). In case a needed tool is nearby the recognized position of a large diameter tool, the changing is stopped(S30). A tool changing order is detected whether an automation mode or not(S40). In case the tool changing order is detected as manual mode, the position of the large diameter tool is recognized by using a predetermined value as a PMC(portable multimedia center)(S50).

Description

A big tool exchange method of auto tool exchange merchine megazine

The present invention relates to a method for replacing a large tool of the automatic tool changer magazine, and in particular, when the manual mode is selected on the automatic tool changer control panel, when the large tool and the other small tool reach a position to collide with each other, the user manually walks the interlock. The present invention relates to a method for replacing a large tool of an automatic tool changer magazine, which prevents tool collisions occurring in the process of moving a tool.

Machine tools used for the purpose of processing metals or non-metal materials into shapes and dimensions by means of various cutting or non-cutting methods or by using a suitable tool or for more precise machining on semi-materials are called machine tools. The above-mentioned machine tool is called a cutting machine tool in which a chip is generated in a machining process, and a non-cut machine tool in which a chip is not generated in a machining process is called a metal forming machine. The above cutting machine tools include lathes, milling machines, machining centers, drilling machines, boring machines, grinding machines, gear cutters, special processing machines, and the like. The metal forming machines include mechanical presses, hydraulic presses, and cutting machines. Bending machine, forging machine, drawing machine and the like.

As the machine tool is rapidly progressing in automation and numerical control (NC), a machine tool equipped with an automatic tool changer (ATC) for rapid tool change has been released. In the above automatic tool changer, a turret type in which several tools are directly installed in a tool magazine and the tool magazine is rotated so that the tool is brought to the exchange position, and then replaced by the tool used in the spindle (spindle) by the tool change arm. And a tool storage magazine to store several tools away from the main shaft, and move the tool in the tool storage magazine to the exchange position, and then use the tool change arm to exchange it with the tool used in the spindle (spindle). The storage type is being released.

First, a typical tool change process is as follows.

1 is a flowchart illustrating a conventional tool change process, FIG. 2 is a flowchart illustrating a conventional tool change process in detail, and FIG. 3 is a block diagram illustrating a tool change apparatus.

As shown in Figure 1, in the normal tool change process, when a tool change command is input, each axis is moved to the origin for tool change (S1), and the rotating spindle is stopped (S2).

After the spindle is stopped, the tool to be exchanged is brought to the standby port (S3), and then the tool is exchanged by exchanging the tool to be exchanged with the tool mounted on the spindle (S4).

In order to explain in more detail the method for exchanging the tool, an embodiment will be described in detail as shown in FIG. 2.

As shown in Fig. 2, when a tool change command is inputted, it is determined whether a command for moving each axis to exchange a tool change is input and moved to the origin, and then the respective axis is moved until a position for changing the tool is found ( D1) (D2).

When the movement to the position for changing the tool is completed, the spindle is commanded to stop the spindle (D3) (D4).

When the spindle stops, the tool port down command to be exchanged is input to rotate the tool change arm one time to move the tool to be exchanged to the standby port S (D5) and D6.

After the tool to be replaced is moved to the standby port S, the tool change arm determines the normal position, and if it is normal, the tool change arm motor and the solenoid device are stopped to complete the tool change (D7) (D8) and (D9).

As shown in FIG. 3, when the tool is changed in this manner, the large diameter tool 2 which causes interference with the tool mounted on the left and right ports in the magazine 1 of the machine tool equipped with the automatic tool changer is the spindle 4. ) And other small diameter tools mounted on the left and right sides of the small diameter tool (3) to be replaced by the large diameter tool (5) mounted on the spindle (4). There was a problem in that the collision with the tool (6) (7) is broken by a serious blow to the whole machine.

As described above, the conventional automatic tool changer has a problem that the large-sized tool and the small-sized tool may collide with the small-sized tool mounted on the left and right sides when the large-sized tool is replaced at random.

Therefore, in order to solve this problem, in the automatic area, the collision of the tool did not occur by using the interlock during T-CODE command. In other words, in order to prevent the use of adjacent ports on both sides of the large diameter tool, the interlock is generated in the automatic area when an adjacent port of the large diameter tool is commanded by the T-CODE to prevent an accident.

However, when changing the operation method from the automatic mode to the manual mode on the control panel of the automatic tool changer, even if the tool is manually installed in the port adjacent to the port where the large diameter tool is mounted, the interlock cannot be made and the operator may mistakenly move it. This caused the tool to break.

In other words, if the automatic mode is selected on the control panel of the automatic tool changer, an interlock is automatically generated. If the large tool and the small tool attempt to collide with each other, the tool change operation is stopped and an alarm sound is output to prevent the mutual collision between the tools. However, when operating in the manual mode, the interlock is not caught at all, and there is a problem that the tool may accidentally collide with each other during the tool change while the operator visually checks.

The present invention is to solve the above problems, when the manual mode is selected in the control panel of the automatic tool changer when the large tool and the small tool reaches the position to collide with the interlock, the tool is no longer possible to move, and at the same time The purpose of the present invention is to prevent the collision between the tools generated by manually moving the tool by outputting the alarm sound.

In order to achieve the above object, the present invention comprises the steps of recognizing the port equipped with a large diameter tool (S10); Determining whether a port on which a tool to be replaced is to be mounted is an adjacent port of a large tool mounting port when a tool change command is input (S20); If it is determined that the port on which the tool to be replaced is to be mounted is an adjacent port of the large tool mounting port, generating an interlock to stop the tool change (S30).

In addition, the present invention preferably further comprises the step (S40) of determining whether the tool change command is in the automatic mode or the manual mode, in this case, if the tool change command is in the manual mode as a result of the step S40, large diameter tool When the is mounted on the port may further include the step (S50) of recognizing the port is equipped with a large diameter tool by setting the PMC data table input value to a predetermined value.

As described above, when the manual mode is selected in the control panel of the automatic tool changer, when the large tool and the small tool reach a position to collide with each other, the tool stops moving by interlocking and outputs an alarm sound at the same time. There is an effect to prevent the mutual tool collision occurring in the process of moving the tool manually.

1 is a flow chart showing a conventional tool change process.
Figure 2 is a flow chart showing in detail the conventional tool change process.
3 is a block diagram of a tool changer.
Figure 4 is a flow chart of the automatic tool replacement method of the present invention.

Hereinafter, with reference to the accompanying drawings and description will be described in detail the operating principle of the preferred embodiment of the present invention. However, the drawings and the following description shown below are for the preferred method among various methods for effectively explaining the features of the present invention, the present invention is not limited only to the drawings and description below.

In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom. Therefore, the definition should be based on the contents throughout the present title.

In addition, preferred embodiments of the present invention to be carried out below are already provided in each system functional configuration to efficiently describe the technical components constituting the present invention, or system functions commonly provided in the technical field to which the present invention belongs. The configuration will be omitted, and described mainly on the functional configuration to be additionally provided for the present invention.

If those skilled in the art to which the present invention pertains, it will be able to easily understand the function of the components already used in the prior art among the omitted functional configuration not shown below, and also the configuration omitted as described above The relationship between the elements and the components added for the present invention will also be clearly understood.

In addition, the following examples will be used to appropriately modify the terms so that those skilled in the art to clearly understand the technical features of the present invention to effectively understand, but the present invention It is by no means limited.

Therefore, if other small diameter tools exist on the left and right sides of the port to be exchanged when replacing the large diameter tool, an interlock is generated to prevent collision with other tools generated during the replacement of the large diameter tool.

On the other hand, in the present invention, even when the large-sized tool in the manual mode as well as the automatic mode, if there are other small-sized tools on the left and right sides of the small-sized tool to be replaced, an interlock is generated to output an alarm sound in the process of manually replacing the large-sized tool. Prevent collisions with small diameter tools that occur.

Looking at the tool change method according to the invention with reference to FIG.

4 is a flowchart showing the automatic tool changing method of the present invention.

First, the port on which the large diameter tool is mounted is recognized (S10).

As a method for recognizing a port on which a large diameter tool is mounted, various methods can be adopted. In an embodiment, input values of the PMC data table may be utilized. That is, when a large diameter tool is mounted in a specific port, a preset value (for example, 1) may be set to be input and stored in the PMC data table.

In such a state that the port on which the large-diameter tool is mounted is identified in advance by PMC data input, when a tool change command is input, it is determined whether the port on which the tool to be replaced is mounted is an adjacent port of the large-diameter tool mounting port (S20). .

At this time, the determination of whether the large diameter tool is mounted in a port adjacent to the port on which the tool to be exchanged is mounted may be performed by using a stored value of a pre-stored PMC data table.

If it is determined that the port on which the tool to be replaced is to be mounted is an adjacent port of the large tool mounting port, an interlock is generated to stop the tool change (S30).

On the other hand, according to a preferred embodiment it can be determined whether the tool change command is in the automatic mode or manual mode.

That is, it is determined whether the tool change command is in the automatic mode or the manual mode (S40), and in the case of the tool change command using the automatic mode, that is, the T-CODE, the tool change command is issued to the adjacent port of the large diameter tool mounting port according to the conventional method. If so, the interlock is engaged.

When the tool change command is in the manual mode, as described above, when the large diameter tool is mounted in the port using the pre-stored PMC data table input value, the port in which the large diameter tool is mounted is recognized and an interlock is generated (S50).

That is, in the case of tool change in the automatic mode, the interlock is generated using the PMC data table value in the conventional manner and in the case of the tool change in the manual mode.

As described above, according to the present invention, when a tool change is performed at a port adjacent to a large tool mounting port, an interlock can be generated in the manual mode, which cannot generate an interlock in the prior art as in the automatic mode.

In other words, when another small tool is inserted into the left and right points of the large tool in the process of exchanging it with another small tool, the large tool and the other tool collide with each other. If other tools exist on the left and right sides of the tool insertion port when executing the command to exchange with, the tool stops changing and outputs an alarm sound to prevent the collision between large and small tools during the tool change process.

When the tool is moved through the operation panel in the manual mode, when the currently mounted large tool reaches the vicinity of another small tool, the small tool cannot be inserted into the port while another small tool is present on the left or right side of the port. The alarm sound is issued through the interlock to prevent the tool from being exchanged, thus preventing the collision between large and other small tools.

Table 1 below is a table for comparing the operational differences between the prior art and the present invention.

As shown in Table 1, according to the prior art, in the automatic area (operated by T-CODE), when the command is given to the adjacent port of a large diameter tool, the interlock function is activated to prevent the damage of the tool. There is no way to prevent tool breakage when commanding adjacent ports of large tools because of the lack of such interlock functions.

On the other hand, according to the present invention, when an instruction is given to a port adjacent to a large tool in the manual area as well as the automatic area, an interlock function may be activated to prevent tool breakage.

type When ordered to the adjacent port of Daekyung Tools Prior art Invention One Automatic area (T-CODE command) INTERLOCK INTERLOCK 2 Passive area Tool breakage occurs INTERLOCK

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

That is, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the scope of the technical spirit of the present invention by these embodiments.

Therefore, the protection scope of the present invention should be interpreted by the claims below, and all technical ideas within the equivalent scope will be construed as being included in the scope of the present invention.

1: magazine
1, 2: large diameter tool
3, 6, 7: Small tools
4: spindle
a, b: port without tool
c, d, e: port with small diameter tool

Claims

Recognizing a port on which the large diameter tool is mounted (S10);
Determining whether a port on which a tool to be replaced is to be mounted is an adjacent port of a large tool mounting port when a tool change command is input (S20);
If it is determined that the port on which the tool to be replaced is to be mounted is an adjacent port of the large tool mounting port, generating an interlock to stop the tool change (S30);
Method for replacing a large diameter tool of the automatic tool changer magazine, characterized in that consisting of.

The method of claim 1,
Determining whether the tool change command is the automatic mode or the manual mode (S40)
Method for replacing a large diameter tool of the automatic tool changer magazine further comprising.

The method of claim 2,
If the tool change command is in manual mode,
Recognizing the port on which the large diameter tool is mounted by setting the PMC data table input value to a predetermined value when the large diameter tool is mounted on the port (S50).
Method for replacing a large diameter tool of the automatic tool changer magazine further comprising.