JPH01169608A - Numerical control method - Google Patents

Abstract

PURPOSE:To easily synchronize and drive the arbitrary number of axes without considering a detailed specification by driving independently respective axes from other axis by an independent driving instruction and giving the synchronizing waiting instruction and the synchronizing instruction to a necessary axis at the arbitrary place of a driving instruction. CONSTITUTION:When an action is completed by times t2 and t1 for both X axis and Y axis, a next instruction is also an independent driving instruction, and therefore, the next instruction is executed. The axis Y, becomes a waiting condition since in a time t5, the next instruction is an instruction G04XY to await simultaneously the X axis and the Y axis. The Z axis becomes the waiting condition since in a time t4, the next instruction is an instruction G04XY to await simultaneously the X axis and the Y axis. Since in a time t6, for the X axis, the next instruction is an instruction G04YZ to await simultaneously, the Y axis and the Z axis, both Y axis and Z axis are the waiting condition, three axes enters the synchronizing driving in accordance with the synchronizing instruction while they are prepared next to the synchronizing waiting instruction of three axes. Thus, it is not necessary to think other detailed specification, the instruction can be instructed for preparation and the instruction for respective axes may be also written in order into a memory, the use efficiency of the memory is improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a numerical control method for multi-axis operation.

[Conventional technology]

Table 1 is a program showing a control method of this type of conventional numerical control device, and FIG. 2 is a time chart showing the operation contents of the X-axis, Y-axis, and Z-axis outputted according to the program in Table 1.

Table 1 In block 1, the time-start independent positioning operation between each axis is performed from time to, and the Z-axis operation is performed at time t1,
Although the X-axis operation ends at time t2, the Y-axis operation does not end until time t3, so it is necessary to wait until time t3 to shift from block 1 to block 2. The same applies to blocks 2 and 4. In block 3, there is a dwell of 1.5 seconds on the X axis, so on the Y axis,
Check from block 3 to block 4 whether the Z-axis movement is complete.
In order to shift to , it is necessary to wait until time t5. In block 5, after waiting for the end of the Z-axis operation in block 4, a three-axis linear interpolation operation is performed from time t6 to time t7. In this conventional example, the time t at which the three-axle interphase operation is performed from time to
It takes 11 seconds to reach 6.

Table 2 Table 2 explains the data storage area regarding the X-axis and Y-axis of the memory used for control of other conventional examples of numerical control equipment, and Figure 3 shows the data showing details of the starting axis area. It is a format.

The X-axis positioning start data DX is at address 0°1, ~,
200, the Y-axis positioning start data DY is at address 3.
00,301. ~,500. These data DX and DY are pointers that indicate data notifications, which are positioning information px and py in which actual positioning data is stored. Also, regarding the setting of the starting axis area, blbo is 00.01. to.

In the case of 11, interpolation start, X-axis start, Y-axis start,
Set both axes starting.

Table 39 Table 4 shows the first . This is a second program example.

Table 3 The first program example will be explained. When setting the starting axis for interpolation starting, there is a regulation that the setting of the starting axis at the relevant point (which has the same meaning as the block in the first conventional example) must be the same for both the X-axis and the Y-axis. However, at the fourth point, the setting on the X-axis side is 01 and the setting on the Y-axis side is 00, resulting in an error. To eliminate errors, data settings in the starting axis area must be carefully set.

A second program example will be explained. On the Y-axis side, the number of operations is large and addresses 300 to 304 are fully used, but on the X-axis side, only addresses 3 and 4 are used, and addresses 0 and 1.2 are not used. In other words, if there is an imbalance in the number of operations between the axes, the memory of the axis that has fewer operations will be used less efficiently.

[Problem that the invention seeks to solve]

The conventional numerical control method described above has the disadvantage that in the former, each block must wait until the other axis has finished its operation, which is inefficient in terms of time; in the latter, great attention is paid to block ramming. However, the disadvantage is that memory usage is inefficient.

[Means for solving problems]

In the numerical control method of the present invention, when each axis should be operated independently, an independent operation command is given to each axis, and when synchronized operation is required, each axis to be operated synchronously is synchronized with all other axes. A synchronization wait command that instructs the axes to wait until the synchronization wait state is given, and how each axis is handled when all axes are in the synchronization wait state for one specific axis among the axes to which the synchronization wait command was given. The first step is to issue a synchronization command to determine whether synchronized operation should be performed, and when each axis receives an independent operation command, that axis is operated independently from other axes, and the axis receiving a synchronization wait command is and a second step of causing the axes that have received the synchronization wait command to operate synchronously in accordance with the synchronization command for the specific axis when all the axes to be synchronized are in a synchronization wait state.

(Function) By operating each axis independently from other axes using an independent operation command, and by giving synchronization wait commands and synchronization commands to the necessary axes at any point in the operation command, it is possible to easily operate each axis without considering detailed regulations. Any number of axes can be operated synchronously.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

Table 5 is a program to which an embodiment of the numerical control method of the present invention is applied, and FIG. 1 is a time chart showing the operation details of the X-axis, Y-axis, and Z-axis outputted according to the program in Table 5.

Table 5 The X-axis, Y-axis, and Z-axis are controlled by programm stored in the X-axis program storage area MX, Y-axis program storage area MY, and Z-axis circumferential program MZ, respectively. The first operation starts independently on the X-axis, Y-axis, and Z-axis at time to, and the X-axis, Y-axis, and Z-axis each start at time t2+.
Ends at t3+tl. In the conventional example, the X axis and Z axis are Y
It was necessary to wait until time E3 when the operation of the axis ends, but in this embodiment, as soon as the operation of both the X and Y axes ends at time t2+t, the next command is also an independent operation command, so the next command is executed. Execute. At time t5, the Y-axis enters a waiting state due to the command GO4X:Z to wait for the next command or the X-axis and Z-axis synchronously. The Z-axis enters a waiting state at time t4 because the next command is the command GO4XY to synchronize the X-axis and Y-axis. At time t6, the next command for X1li+h is the command GO4YZ to wait for synchronization of the Y axis and Z axis, and Y
Since both the axes and the Z-axis are in the waiting state, a synchronization command (in this example, the X-axis Gol
XX4 Yy4Z24), the three axes enter synchronous operation. When the synchronous operation ends at time t7, the X-axis operates independently because an independent operation command has been given. Since the Y-axis and Z-axis are given a synchronization wait command to synchronize with the Z-axis and Y-axis, respectively, the two axes are Enters interphase operation.

Therefore, the individual movements of each axis x, , x2 . x.

y+, 3'2. '/3. Z+, Z2. Assuming that the required operation time of Z3 is the same as in the conventional example, the time from time to to time t6 when the first synchronous operation starts is 8.
This is 8 seconds, which is significantly shorter than the 11 seconds of the conventional example.

〔Effect of the invention〕

As explained above, according to the present invention, each axis can operate independently and simultaneously using an independent operation command, and there is no need to wait for other axes, which improves time efficiency. By being able to perform synchronized operation using the synchronization command that follows the wait command, there is an effect that commands can be easily issued without having to consider other detailed regulations, and the commands for each axis can also be written to memory in order. This also has the effect of improving memory usage efficiency.

[Brief explanation of the drawing]

FIG. 1 shows the X-axis, Y-axis, and Z-axis, which are output according to a program to which an embodiment of the numerical control method of the present invention is applied.
The time chart showing the operation contents of the axis, Figure 2 shows the X output according to the program of the conventional numerical control method.
3 is a data format showing the details of the starting axis area.
y2. ~y5...Y-axis movement amount, Z I + Z2
+～Z,...Movement amount of Z axis.

Claims (1)

[Claims] When performing multi-axis operation, when each axis should be operated independently,
An independent operation command is given to each axis, and when synchronized operation is required, there is a synchronized wait command that instructs each axis to wait until all of its partner axes are in a synchronized wait state. a first step of giving a synchronization command to any one specific axis among the given axes, which instructs how each axis should operate in synchronization when all the axes are in a synchronization wait state; When an axis receives an independent operation command, it operates independently from other axes, and axes that receive a synchronization wait command are placed in a synchronization wait state, and all axes that should be synchronized are placed in a synchronization wait state. and a second step of synchronously operating each axis that has received a synchronization wait command in accordance with a synchronization command for a specific axis.