JPH06320395A - Inspection timing indicating device - Google Patents

Abstract

PURPOSE:To perform display of an inspection timing suitable for experience of a worker and an actual processing state by providing a timing deciding processing means to compare a using frequency counted by a count-up processing means with an inspection timing and decide an inspection timing. CONSTITUTION:An item required for inspection is set by an inspection item setting means 1 and an inspection timing at which inspection indication is effected is set by an inspection item setting processing means 2. An inspection timing count condition in the using state of an inspection item is set by a count condition setting means 3. The using frequency of an inspection item based on a count condition is counted by a count-up processing means 4 and an inspection timing is decided by a timing deciding means through comparison of the inspection timing with the using frequency. When the inspection timing is decided by the timing deciding means 5, inspection is indicated by an indicating processing means 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection timing instruction device for instructing the inspection timing of a machine tool such as a grinding machine.

[0002]

2. Description of the Related Art In machine tools, many consumable parts such as belts for transmitting tools, power, and lubricating oil for lubrication are used. Depending on the life of each consumable part, parts are replenished or replaced. Inspection is required. Conventionally, there are the following techniques for instructing the timing of this type of inspection.

That is, the number of times that a tool or the like has been used is counted, and the preset count up to the life of the tool is displayed. Also, there is a method in which the usage time of using consumable parts and the like is integrated and a lamp is turned on when the preset service life of the tool is reached.

[0004]

However, in the inspection timing indicating device according to the above-mentioned conventional technique, the items and the number of items to be inspected, the condition for counting the tool life, the inspection of the tool life, etc. The time set value is preset and cannot be changed. Therefore, there is a problem that the operator has to inspect the inspection items other than the set items by referring to the manual or the like. In addition, since the set initial values cannot reflect empirical knowledge that matches the actual conditions of processing, the cause of waste due to replacement of consumable parts too early or failure due to inspection too late than the operator thinks appropriate And so on.

[0005]

In order to solve the above-mentioned conventional problems, the present invention, as shown in FIG. 1, has an inspection item setting means 1 for setting an item requiring inspection and an inspection timing of the item. The inspection timing setting means 2 for setting, the count condition setting means 3 for setting conditions for counting the frequency of use of the item, and the use frequency of each item every time the condition set by the count condition setting means 3 is satisfied. And a timing determination processing means 5 for comparing the usage frequency counted by the count-up processing means 4 with the inspection timing to determine the inspection timing.
And an instruction processing means 6 for instructing that the time determination processing means 5 has determined that it is an inspection time.

[0006]

Operation: The inspection item setting means 1 sets an item requiring inspection, and the inspection time setting means 2 sets an inspection time for issuing an inspection instruction. Further, the count condition setting means 3 sets the check time count condition in the usage status of the check item.

The count-up processing means 4 counts the frequency of use of the inspection item based on the counting condition, and the timing determining means 5 determines the inspection time by comparing the inspection time with the frequency of use. . When the timing determination means 5 determines the inspection timing, the instruction processing means 6 issues an inspection instruction. By performing the above-mentioned actions for each inspection item, the inspection time is instructed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a configuration diagram showing a mechanical configuration of a grinding machine having an inspection timing instruction device according to this embodiment. Reference numeral 10 denotes a grinder, and a table 12 that slides on the bed 11 is provided on a bed 11 of the grinder 10. The table 12 is moved in the left-right direction in the drawing by driving the Y-axis motor 22. Also, table 12
A headstock 14 and a tailstock 15 are disposed above the headstock 14, the headstock 14 includes a headstock 16 and a headstock motor 24, and the tailstock 15 includes a tailstock 17 and a dresser D. is doing.

The workpiece W is rotatably supported by the main shaft 16 and the tailstock 17, and is rotated by the rotation of the main shaft 16. Further, the rotation of the spindle 16 is performed by transmitting the rotation of the spindle motor 24 arranged on the spindle stock 14 via the spindle stock belt 62. On the other hand, a grinding wheel G for grinding the workpiece W is attached to a grinding wheel shaft 18 provided on the grinding wheel base 13, and the grinding wheel base 13 is moved by an X-axis motor 21 in a direction orthogonal to the workpiece axis line. The rotation of the grindstone shaft 18 is performed by transmitting the rotation of the grindstone shaft motor 23 arranged on the grindstone base 13 via the grindstone shaft belt 61.

Reference numeral 63 is a lubricating oil supply device having a lubricating filter 63a for filtering the lubricating oil. Reference numeral 64 denotes a coolant liquid supply device for ejecting the coolant liquid to the processing portion by a drive device (not shown). Reference numeral 40 denotes an operation panel, which includes a display device 41, a keyboard 42, a power lamp 43, an operation preparation lamp 44, a power switch 45, and an operation preparation switch 4.
6 and an inspection time display switch 47 are provided.

Next, the structure of the numerical controller for controlling the grinding machine having the above structure will be described with reference to FIG. Reference numeral 31 is a CPU of a microcomputer, 32 is a memory including ROM and RAM, and 33 is an interface. 34,
Reference numeral 35 is an X and Y axis drive circuit for controlling the X and Y axis motors 21 and 22 of the grinder, respectively, and 50 is a sequencer. In addition to the memory 32, this numerical control device has a nonvolatile memory 36 in which the stored contents can be freely written and read, and the stored contents are not lost even when the power is turned off.

The memory 32 has an NC for grinding.
A program 32a and an inspection timing instruction program 32b for instructing the inspection timing of this embodiment are stored. Further, the non-volatile memory 36 stores and holds inspection data 36a such as inspection items and inspection timings described later. The sequencer 50 is connected to the CPU 31 via the interface 33, performs sequence control of the grindstone shaft motor 23, the spindle motor 24, etc., and is connected to the operation panel 40.

With the above construction, the operation of the embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a flow chart showing the procedure for setting inspection items, inspection time count conditions, etc. according to this embodiment. First, an operator or the like decides an item that needs to be inspected or replaced, and inputs the item name. In this embodiment, the inspection items are the replacement of the grindstone shaft belt 61, the replacement of the lubricating oil filter 63a, and the replacement of the power lamp 43 (step 300). Next, the condition for counting the passage of the inspection time is selected (step 301). The counting conditions selected here include the following. That is, the time during energization for integrating the time from when the power switch 45 is turned on to when it is turned off, the operation preparation switch 46
Is the operation preparation time for accumulating the time from ON to OFF, the operation time for accumulating the machining time using the tool and the number of times the tool has been used for accumulating the machining frequency. The counting condition in this embodiment is
For replacement of the grindstone shaft belt 61, the grindstone shaft motor 23
The operating time is selected to integrate the rotational time of the. For the replacement of the lubricating oil filter 63a, the during-preparation time, which integrates the during-preparation time during which lubrication is supplied, is selected. For replacement of the power supply lamp 43, electrification during which the time during electrification during lamp lighting is integrated is selected.

FIG. 7 shows a concrete table of the correspondence table of items and counting conditions. Next, the inspection time corresponding to each item is input (step 302). In the present embodiment, the above 3
In each case, the type of the inspection time counting condition is time, and the operator inputs the life time of each part obtained empirically so far. Then, the inspection data such as the item name selected in steps 300 to 302 is stored / stored in the non-volatile memory 36, and the initial setting of the inspection time is completed (step 303).

The reason for storing data in the non-volatile memory 36 is that each item, counting condition, elapsed time, etc. must be retained when the computer is powered off. Further, in the above-described example, the usage frequency is the usage time of the replacement product or the like, but it goes without saying that the number of times of usage can be set. Next, the inspection time count processing method will be described based on the flowchart of FIG.

In step 100, it is determined whether or not the counting process has been completed for all the setting items. If not completed, the process proceeds to step 101. When all items are completed, the process proceeds to step 106 of the counting process. Completes one cycle. In step 101, it is determined whether or not the state of the grinder at that time satisfies the count condition of the inspection time of each item. First, the determination of the count when replacing the grindstone shaft belt 61 is performed. The output signal of the grindstone shaft motor 23 connected to the sequencer 50 is input to the CPU 31 via the interface 33, and the grindstone shaft motor 2
It is determined whether 3 is in a rotating state. If it is in the rotating state, in step 102, the elapsed counter that holds the elapsed time indicating the usage frequency for each item is counted up. Then, in step 103, the value of the elapsed counter is compared with the value of the inspection time (life time), and when the value of the elapsed counter exceeds the value of the inspection time, step 10
Turn on the check flag in step 4. If the value of the elapsed counter is less than or equal to the value of the inspection time, the inspection flag is turned off in step 105.

Next, the above-mentioned processing is performed for replacement of the lubricating oil filter 63a. In this case, the determination in step 101 is made by inputting whether or not the operation preparation instruction lamp 44 of the operation panel 40 connected to the sequencer 50 is turned on, and when the operation preparation instruction lamp 44 is turned on, the progress counter is turned on by step 102. It counts up and it is judged whether it is time to check.

Similarly, a process for replacing the power lamp 43 is performed. In the determination of step 101 in this process, whether or not the power lamp 43 of the operation panel 40 is turned on is input through the sequencer 50, and when the power lamp 43 is turned on, the progress counter is counted up at step 102. By repeating the above work, the inspection time counting process is performed.

Next, the flow of processing for displaying the inspection time of each item on the display device 41 will be described with reference to the screen display processing flowchart shown in FIG. When the power switch 45 is turned on, first, in step 201, NC normal processing is performed. This NC normal processing refers to processing for inputting and processing NC data relating to grinding work, and particularly for the display screen of the display device 41, an NC data input screen, a screen during grinding, and various caution / warning screens. Etc. are displayed. Next, in step 202, the above-mentioned inspection flag is judged, and when the inspection flag is ON, step 2
A screen for instructing the inspection time is displayed by 04 on the display device 41, and the operator is informed of the inspection time. Further, in this embodiment, a function is provided for displaying when the operator or the like wants to confirm the inspection time by steps 203 and 204. In step 203, it is determined whether or not the inspection time display switch 47 wired to the operation panel 40 is turned on, and step 2
The screen of the inspection time is displayed at 04. FIG. 8 shows a specific example of the screen display of the inspection timing instruction. On the screen, the name of the item to be inspected or replaced, the set value of the inspection time, the total elapsed count, and the inspection signal are displayed for each item. The total elapsed count is counted up and displayed when the count condition is satisfied. Also, the inspection signal is
When the value of the total elapsed time of each item exceeds the value of the inspection time (the inspection flag is ON), it blinks or displays in red to indicate the arrival of the time.

When the inspection time is instructed in step 204, the operator inspects and replaces the corresponding item. After the inspection is completed, the operator inputs the inspection completion with the keyboard 42 to clear the progress counter of the inspected item, turn off the inspection flag, and return to step 201.
By repeating the above work, the inspection time is instructed.

Finally, the effect of this embodiment will be shown. As described above, the worker can count the inspection time for the necessary items such as inspection and replacement under appropriate conditions based on his experience, so that it becomes possible to instruct the more accurate inspection / replacement time. . Further, by storing data such as items and total elapsed counts in the non-volatile RAM, there is also an advantage that the inspection timing can be instructed without storing the data in an external storage device or the like.

[0022]

As described above, according to the present invention, it is possible to set items such as parts that require inspection in a machine tool, which allows an operator to freely set and add inspection items. Since it is possible to do so, there is an advantage that it is possible to save the labor which has been performed by referring to a manual or the like.

Further, by setting the timing of the inspection and the condition for counting the frequency of use for each of the inspection items, the inspection time can be counted according to the usage status of each item. It is possible to indicate the inspection time suitable for the person's experience and the actual processing situation. Therefore, there is an advantage that wastefulness due to premature replacement of tools and the like and occurrence of failure due to excessively late inspection are pushed as much as possible.

[Brief description of drawings]

FIG. 1 is a diagram corresponding to a claim of the present invention.

FIG. 2 is a mechanical configuration diagram of a grinder having an inspection timing instruction device according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of a numerical controller according to the present embodiment.

FIG. 4 is a flowchart showing a procedure for setting inspection items and the like in this embodiment.

FIG. 5 is a flowchart showing a method of counting inspection times in this embodiment.

FIG. 6 is a flowchart showing a screen display process in this embodiment.

FIG. 7 is a diagram showing a correspondence table of inspection items and counting conditions in the present embodiment.

FIG. 8 is a diagram showing a specific example of a screen display of an inspection timing instruction in the present embodiment.

[Explanation of symbols]

 1 inspection item setting means 2 inspection timing setting means 3 count condition setting means 4 count up processing means 5 timing determination processing means 6 instruction processing means 10 grinder 30 numerical control device 36 non-volatile memory 40 operation panel 50 sequencer 61 grindstone belt 62 Headstock belt 63 Lubricating oil supply device 64 Coolant supply device D Dresser G Grinding wheel W Workpiece

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[Procedure amendment]

[Submission date] November 4, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

Claims (1)

[Claims] 1. An inspection item setting means for setting an item requiring inspection, and an inspection period for setting an inspection period for said item in a device for instructing an inspection period for a machine tool requiring inspection such as tool change. Setting means, count condition setting means for setting conditions for counting the frequency of use of the item, and count-up processing means for counting the use frequency of each item each time the condition set by the count condition setting means is satisfied. A timing determination processing means for comparing the usage frequency counted by the count-up processing means with the inspection timing to determine the inspection timing; and an instruction processing means for instructing that the timing determination processing means determines the inspection timing. An inspection time indicating device characterized by being equipped with.