KR100296467B1 - Index control method according to the machining table angle command of the horizontal machining center - Google Patents

Abstract

The present invention does not use the optional function of the numerical controller to divide the angle of the tool table of the horizontal machining center, but controls the machining table only with a programmable machine controller and applies an axis transfer signal to freeze the machining table. It prevents the control off state (free state) generated by mechanically attaching and removing the machining table, enabling manual operation, and an optional function for commanding the angle of the machining table in the horizontal machining center. It is not necessary.

Description

Index control method according to the angle command of the machining table of the horizontal machining center

The present invention relates to a method of controlling a machining table so that only a programmable machine controller can rotate at a commanded angle. More particularly, the present invention relates to a numerical controller without using an optional function of the numerical controller to divide the angle. The present invention relates to an index control method according to an angle command of a machining table of a horizontal machining center using a programmable machine controller, which is a basic function.

In general, the configuration of a horizontal machining center (Horizontal Machining Center) is shown in Figure 1, the machining table 1 is composed of an upper plate (1a) and a lower plate (1b) for controlling the machining table (1) It consists of a drive mechanism 2 and a servomotor 3 which transmits power to the drive mechanism.

The mechanical mechanism for controlling the angle command of the horizontal machining center is, as shown in Figure 2, when the rotation command is input to the machining table, the step (D1) of removing the upper plate and the lower plate of the machining table to remove and ;

(D2) determining whether or not it is completed by performing an angle command by a servo motor composed of a machining table and a unit when the state is unclamped;

After performing the angle command, it is composed of the step (D3) of returning to the clamp state from the unclamped state and starting the machining.

Therefore, the index control method according to the angle command of the machining table of the conventional machining center, as shown in FIG.

If the machine code for mechanically commanding the unclamp is input, giving a rotation command to the machining table (S1);

Restraining the servomotor to unclamp the machining table in a clamped state and receiving an unclamp command from the numerical controller (S2);

Outputting an unclamp complete signal to a numerical controller from a machine controller capable of programming the unclamped completion signal (S3) when the unclamping is completed;

When the completion signal is output from the numerical controller, the servo motor rotates to rotate the machining table (S4);

Determining whether a reset signal is present (S5);

If there is a reset signal, stopping in an unclamped state and waiting for re-command of the table (S5 ');

Repeating the rotation of the machining table to match the commanded rotation value if there is no reset signal (S6);

Determining whether or not a value below a decimal point is detected in the coordinates of the final determined position reached when the rotation of the table reaches the commanded rotational value (S7);

Stopping the machining table and resetting the numerical controller to an unclamped state when waiting for a value below the decimal point (S7 ');

Step S8 of commanding a clamp of the machining table by inputting from the numerical controller when a value below the decimal point is not detected;

Completion of the clamp is completed by the step (S9) to complete the cycle by outputting the clamp complete signal to the numerical controller from the machine controller capable of programming.

In addition, in order to adjust the angle of the machining table of the horizontal machining center, an index table provided as an option function in the numerical controller is used, and the signals of the optional function for control are shown in FIG. When the clamp signal of the input is input to a programmable machine controller (PMC), the clamp is controlled by a machine controller (PMC) that can be programmed to mechanically clamp the machining table and to indicate that the machining table has been clamped. The completion signal is output. In addition, when the unclamp signal of the numerical controller (NC) is input to the programmable machine controller (PMC), the machining table can be instructed to release the mechanical clamp state, and the programmable table can be programmed to indicate that the machining table has been unclamped. The machine controller (PMC) is configured to output an unclamped completion signal.

The index control method according to the machining table angle command of the horizontal machining center configured in this way should use the option function of numerical control, so the manual mode of the machining table axis does not operate. If it is necessary or if the user wants to use the manual handle, it is impossible to use it, and the free state of the corresponding servo shaft occurs in the unclamped state mechanically, which causes deviation from the magnetic position of the machining table. there was.

It is an object of the present invention to provide a control method that provides convenience and flexibility to the operation of a machining table such that the machining table can be rotated at a commanded angle with only a programmable machine controller.

In order to achieve the above object, the present invention eliminates the limitation in configuring a machining program by using a programmable machine controller, which is a basic function of the numerical controller, without using an optional function of the numerical controller to divide the angle, and reduces the servo for the machining table. It prevents the free state of the motor and allows manual operation of the servo motor shaft.

1 is a simplified diagram showing the mechanical structure of a machining table

2 is a flow chart showing the mechanical mechanism for angle adjustment

3 is a block diagram showing a system of signals of optional functions for machining table control;

4 is a flowchart showing an index control method of a machining table according to a conventional angle command.

5 is a flowchart showing a method of controlling an index of a processing table implemented only by a programmable machine controller function of the present invention.

※ Explanation of code about main part of drawing ※

1a: upper plate 1b: lower plate 1: machining table

2: driving mechanism 3: servo motor

As the present invention is shown in Figure 5, the configuration of the method of the present invention as a means for achieving the above object is

When the rotation command is input to the machining table, turning on a signal during the machining table and the servomotor for the table in a restrained state (S10);

Unclamping the machining table in a clamped state and preventing the shaft from rotating by an axis feed inhibit signal (S20) to avoid overloading the servomotor;

When the unclamping is completed, releasing the axis transfer prohibited signal to rotate the servo motor to rotate the machining table (S30);

Determining whether a reset signal is present (S40);

If there is a reset signal, stops the unclamping state and waits for a re-command of the table (S50);

Repeating the rotation of the table to match the commanded rotation value if there is no reset signal (S60);

Repeating the rotation to complete the movement to the commanded position, turning off the axis transfer signal (S70);

Judging whether or not a value below a decimal point is detected in the coordinates of the final determined position reached (S80);

Stopping the machining table and resetting the numerical controller to an unclamp state when waiting for a value below the decimal point (S90);

Commanding to clamp the machining table if a value below the decimal point is not detected (S100);

Completion of the clamp is configured to turn off (Control) the control state of the servo motor for the table (S110).

The operation of the index control method according to the machining table angle command of the horizontal machining center of the present invention configured as described above is as follows.

When power is applied and a rotation command is input to the machining table, a signal during machining table movement is turned on, and the servomotor for the tool table is turned on in a restrained state to change the machining table from clamped to unclamped state. Check the state of the unclamp (S10, S20). This action prevents the machine controller itself from rotating to the servomotor of the tool table, thus preventing the free state and overloading the servomotor.

When the unclamped state is completed, the axis feed inhibit signal is released to rotate the servomotor to rotate the machining table (S32), and it is determined whether the reset signal is valid (S40). After the operation is stopped, the controller waits for the recommand of the table, and when the recommand falls, the operation is sequentially performed from the step of rotating the servomotor again (S50).

If the reset signal does not exist, the rotation of the machining table is repeated to move to the commanded angle so as to match the commanded rotational value (S60). When the movement is completed by repeating the rotation to the commanded position, the axis transfer signal is turned off and commands the clamp (S70).

In order to determine whether the final determined position is correct, it is determined whether the value is below the decimal point (S80). If a value below the decimal point is detected, the final position is not accurate. The controller then resets the numerical controller, waits for the recommand of the table, and when the recommand falls, the operation is sequentially executed from the step of rotating the servo motor again (S90).

If the value less than the decimal point is not detected, the angle adjustment is accurate, so clamp the machining table (S100), and when the clamp is completed, turn off the control state of the servomotor for the machining table (S110) and perform horizontal machining. Since the angle command of the machining table of the center is performed, it is possible to divide the angle without using the numeric controller option function, and to eliminate the limitation in constructing the machining program using the programmable machine controller which is the basic function of the numeric controller. It prevents free state of motor and enables manual operation of servo motor shaft.

As described above, the present invention controls the machining table only with a programmable machine controller, and applies the signal during axis transfer to unclamp the machining table, so that the table is mechanically operated using the machine code for the unclamping of the machining table. Control off state, which is caused by detachment, prevents free state, enables manual operation, and saves cost because it does not require the option function to command the angle of the machining table in the horizontal machining center. It works.

Claims (1)

When the rotation command is input to the machining table, turning on a signal during the machining table and the servomotor for the table in a restrained state (S10); Unclamping the machining table in a clamped state and preventing the shaft from rotating by the axis transfer prohibition signal in the machine controller itself in order to avoid overloading the servomotor (S20); When the unclamping is completed, releasing the axis transfer prohibited signal to rotate the servo motor to rotate the machining table (S30); Determining whether a reset signal is present (S40); If there is a reset signal, stops the unclamping state and waits for a re-command of the table (S50); Repeating the rotation of the table to match the commanded rotation value if there is no reset signal (S60); Repeating the rotation to complete the movement to the commanded position, turning off the axis transfer signal (S70); Judging whether or not a value below a decimal point is detected in the coordinates of the final determined position reached (S80); Stopping the machining table and resetting the numerical controller to an unclamp state when waiting for a value below the decimal point (S90); Commanding to clamp the machining table if a value below the decimal point is not detected (S100); Comprising the step of turning off the control state of the servo motor for the table when the clamp is completed (S110), the index control method according to the machining table angle command of the horizontal machining center, characterized in that the configuration.