JPH0264714A - Method for preparing nc data - Google Patents

Abstract

PURPOSE:To store into a built-in memory by moving a machine movable part by a manual operation, monitoring the current position of each axis, converting the contents of the manual operation into NC data and preparing an NC program when prescribed conditions are established. CONSTITUTION:When an NC data preparing function is menu selected on the initial picture of a display device 15a by the manual operation, a processor 11 turns the picture into an interactive picture. Next, whether it is a movement command by the manual operation or not is examined, when it is a manual operation command, the processor 11 executes a manual feeding processing, moves a tool and updates current position data. In case of hand feeding, a pulse at each prescribed sampling time is counted, a moving quantity processing at each sampling time of a handling axis is executed, the tool is moved and the current position is updated. Next, processor 11 examines whether or not the conditions of the NC data are established in paralleled with the hand feeding processing, and when the conditions are established, the NC data are prepared and stored in a RAM 13.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an NC data creation method, and in particular to an NC data creation method while moving mechanical moving parts by manual operation or MDI operation.
The present invention relates to an NC data creation method for creating data.

<Prior Art> A numerical control device (NC device) executes predetermined numerical control processing based on an NC program to move a movable part of a machine such as a tool or a table to process a workpiece according to instructions. In addition, the NC device positions the tool at a desired position, performs a desired cut, or moves the tool along a subpath by manual feed operations such as a jog or handle, or by one block of NC data (MDI command) from an MDI device. It can be moved and processed.

By the way, people who are accustomed to manual operations may perform machining manually without creating an NC program, and for the first workpiece, try machining it manually while making detailed settings, and after trial machining, change the NC program. may be created and processed.

<Problem to be solved by the invention> However, in the past, even if the desired machining was performed by manually moving the tool relative to the workpiece, the manual operation command could not be saved as NC data, so the same workpiece could not be processed. In order to obtain it, manual operations must be repeated each time.
Alternatively, a new NC program must be created based on trial machining, which poses a problem of inefficiency.

In light of the above, an object of the present invention is to provide an NC data creation method that allows manual processing to be stored in a built-in memory as an NC program (part program).

Means for Solving the Problems> The NC data creation method of the present invention includes the steps of moving a movable part by manual operation and monitoring the current position of each axis;
This is achieved by a step of monitoring whether a predetermined condition for creating C data is met, and a step of creating NC data using the current position data of each axis when the condition is met.

Function> While moving the mechanical movable parts by manual operation, the current position of each axis is monitored, and when a predetermined condition is met, for example, when movement due to manual feed stops, or when the moving axis changes,
When the movement direction changes, one block of NC data is created using the current position of each axis, and thereafter manual operation details are
Convert to C data and create an NC program.

<Embodiment> FIG. 1 is a block diagram of an NC device to which the present invention can be applied, in which 11 is a processor, 12 is a program memory (ROM) for storing control programs, and 13 is for storing processing results, the NC program being executed, etc. 14 is a battery backup RAM (nonvolatile memory) for storing parameters and multiple NC programs; 15 is a CRT&MD equipped with a display device 15a and a keyboard 15b;
16 is an NC data input device, and 17 is an axis control unit having a pulse interpolator and each axis servo unit.

18 is an interface for outputting M-, 5-T-function commands etc. issued by the processor to the machine tool and inputting various signals from the machine tool to the processor; 19 is an operation panel having various switches and buttons; 21 is a machine tool.

Various dialog screens and soft keys are displayed on the display device 15a, and the operator can input predetermined data interactively with the system while referring to the dialog screens. Note that the state shown in Figure 1 is a function that creates and stores manual operation contents as an NC program (NC program by manual operation).
This is an interactive screen in which the user selects the data creation function and manually creates and displays some NC data.

Figure 2 is an explanatory diagram of the main parts of the operation panel, 19a is a change-over switch for mode selection, 19b is a change-over switch for changing job feed between rapid feed and continuous feed (cutting feed), and 19c is for each axis. Jog button in both positive and negative directions, 19
d is an override switch that overrides the jog feed speed in the range of 0% to 200%, 19e is an override switch that overrides the spindle rotation speed, 19f is a manual pulse generator that generates handle pulses, and 19g is a handle feed axis selection switch. be.

FIG. 3 is a flowchart of the process of the present invention. Hereinafter, the NC data creation process will be explained according to the flowchart in FIG.

When "NC data creation function by manual operation" is selected from the menu on the initial screen of the display device 15a,
The processor 11 displays the dialog screen shown in FIG.
Steps 101 and 102), check whether movement is commanded by manual operation or movement by MDI command (NC data is not displayed yet),
If neither command has been issued, check whether NC data creation by manual operation has been completed.
If the answer is "O", the processing from step 101 onward is repeated. Incidentally, the "NC data creation function by manual operation" can be selected by providing an NC data creation selection switch on the operation panel 19 and using the switch.

On the other hand, when handle feed or jog feed is selected by the mode selection switch 19a and the handle pulse generator 19f or a predetermined jog button 19c is operated, the processor 11 performs manual feed processing to move the tool and move the tool to the current position. The location data is updated (step 103).

For example, when the +X-axis jog button is pressed in the jog mode, the processor 11 calculates the jog feed rate Fj from the settings of the jog fast-forward/continuous-feed switch 19b and the jog override switch 19d, and calculates the jog feed rate Fj and a predetermined value. From the sampling time ΔT of 17 to move the tool in the +X direction and update the current position xa.

In addition, in the case of handle feed, the predetermined sampling time Δ
The pulses generated from the manual pulse generator 19f are counted every T, and the counted value is used as the movement amount for each sampling time of the axis selected by the handle axis selection switch 19g, and the tool is moved by performing the same process as jog feed. and update the current position.

In parallel with the above manual feeding process, the processor 11 also checks whether the conditions for creating NC data are satisfied.
If the condition does not hold, the process of step 103 is repeated (step 104); if the condition holds, NC data is created and stored in the RAM 13 (step 105).
.

That is, in the case of jog feed (rapid feed, continuous feed), the processor 11 detects (1) when movement by manual feed stops, and (2) when the axis of movement changes.

(3) When the direction of movement changes, Assuming that the above conditions are met, each axis' current position xa is determined.

Using ya and za, if manual fast forwarding is used, the block end point is the position where the above conditions are met. NC data G OOX
xaY■Zza;
B) is created, assigned a sequence number, stored in the RAM 13, and displayed on the display device 15a. .

Note that the above NC data is for absolute commands, but in the case of incremental commands, the NC data is created by calculating the incremental amount for each axis.

By the way, in the case of jog feed, the above conditions are also met when (4) the feed speed changes by operating the jog override switch 19d, and (5) the spindle rotation speed changes by operating the spindle override switch 19e. When the feed speed changes, the position ("as 3'a + za)" is set as the end point of the block, and the feed speed fa at that time is determined and the NC data is calculated. , , , (C) is created, and when the spindle rotation speed changes, that position is set as the end point of the block, and the spindle rotation speed sa at that time is determined, N
C data G OI XxaY■ZzaS sa ; , , ,
Create (D), add a sequence number, and store it in RAM13.
and display it on the display device 15a.

. On the other hand, in the case of manual handle and dollar feed, (1) when the mode shifts from manual handle mode to another mode, (2) when the manual handle feed direction changes, (3) when the movement axis changes, NC It is assumed that the data creation conditions have been met, and in the case of an absolute command, NC data similar to (B) is created with the current position of each axis at that time as the end point of the block.

In the case of incremental commands, NC data GOIX--; GOIY--; GOIZ--: is created in one of the following formats. By the way, in the case of 1 manual handle feed, in addition to the above conditions, (4) when a preset time has elapsed, (5) when the spindle override switch 19e is operated and the spindle rotation speed changes, the above conditions are met. Each time the condition (4) is satisfied, the current position of each axis (Cxav ya, za) and manual pulse feed speed fh are calculated, and one block of NC data is calculated. Create F fat:,,,, (E), and when the spindle rotation speed changes, find the spindle rotation speed sa at that time, and obtain the NG data GOI XxaYIZzaFfhS sa ;, ,
, , , (F) are created, assigned a sequence number, stored in the RAM 13, and displayed on the display device.

Step 105 The above is for manual feeding, but if it is an MDI command, rNOJ is sent in step 101 and rYEs is sent in step 102.
J, the processor 11 is the CRT&MDI device 1.
A well-known numerical control process is performed according to one block of NC data commanded from 5, and the commanded one block of NC data is stored as it is in the RAM 13 (step 106). , M function is effective when commanding tool exchange.

Now, when the creation of one block of NC data is completed in steps 105 and 106, the processor 11 selects the NC data when the soft key SKI (Fig. 1) indicating completion is operated.
Please check whether data creation is completed (Step 107)
If the program has not ended, the process from step 101 onward is repeated, and if the program has ended, the NC data of the program end is finally inserted and the manual NC data creation process is completed.

In addition, a switch (NC data creation switch) is provided to instruct NC data creation, and when the switch is operated, the conditions for creating NC data are established, and the current position data of each axis at that time and manual feed are It is also possible to create NC data for positioning or NC data for cutting movement depending on the type (continuous feed, rapid feed, handle feed).

<Effects of the Invention> According to the present invention, the movable parts of the machine are moved by manual operation, the current position of each axis is monitored, and when a predetermined condition is met, the current position of each axis is used to control the NC of one block. Since the data is created and the manual operation contents are subsequently converted to NC data and an NC program is created in the same way,
The contents of the manual operation can be stored in the built-in memory as an NC program (part program). Therefore, once the machine is machined manually, the same workpiece can be easily obtained by automatic operation based on the NG program.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an NG device to which the present invention can be applied. FIG. 2 is an explanatory diagram of the main parts of the operation panel, and FIG. 3 is a flowchart of the processing of the present invention. 110. Processor, 13, RAM, 15, CRT & MDI device, 190. Operation board. Patent applicant Agent for FANUC Co., Ltd.
Patent Attorney Chiki Saito

Claims (6)

[Claims] (1) While moving the mechanical moving parts by manual operation,
An NC data creation method characterized in that the current position of each axis is monitored, and when a predetermined condition is satisfied, one block of NC data is created using the current position of each axis at that time. (2) N according to claim 1, characterized in that the above-mentioned condition is considered to be satisfied when the movement by manual feeding stops, when the axis of movement changes, and when the direction of movement changes.
C data creation method. (3) When the travel speed changes or the spindle rotation speed changes, it is assumed that the above conditions are met, and NC data is created and the speed command or spindle rotation speed command is included in the NC data. An NC data creation method according to claim 2, characterized in that: (4) When NC data creation is requested by key operation,
The NC data creation method according to claim 1, characterized in that it is assumed that the condition is satisfied. (5) During movement by manual handle feed, the current position and manual pulse feed speed are monitored at predetermined time intervals, and NC data including the feed speed is created at predetermined time intervals. NC data creation method described in section. (6) The NC data creation method as set forth in claim 1, characterized in that instructions obtained by MDI operation are stored in the memory as they are.