JPH0985584A - Method and device for detecting allowable motion speed of tool, and method and device for confirming motion sped corresponding to tool used in program machine device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid beforehand the start of machining with the wrong tool attached by automatically judging whether a tool to be next used is one specified by the NC program or not without depending on an operator. SOLUTION: A tool to be next used is picked up by an image pick-up means 31. The tool is recognized and specified by a tool specifying unit 45 on the basis of the tool image data obtained by the image pick-up. Whether or not the tool specified by the tool specifying unit 45 coincides with the one specified by the tool data previously described in the NC program is judged by a judging means 49.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for detecting an allowable machining speed of a tool and a method and a device for confirming a machining speed corresponding to a tool used in a program-controlled machine, and particularly to a wide variety of machines such as a machine tool equipped with an automatic tool changer. The present invention relates to a method for detecting a permissible machining speed of a tool used in a machine tool that uses a tool, a method for confirming a machining speed compatible with a tool used in a program-controlled machine device such as an NC machine tool, and those devices.

[0002]

2. Description of the Related Art In machine tools, for high-speed machining, it is required that the machining speed determined by the spindle rotation speed (tool rotation speed), the feed speed, etc., be as high as possible. On the other hand, there is a limit to the spindle speed and feed rate due to the type and size of the tool used, and if cutting is performed at a spindle speed and feed rate that exceed these limits,
Proper machining is not performed due to tool damage. In particular, the spindle speed must be set within the allowable speed range below the critical speed determined by the shape, size and weight of the tool.

Conventionally, when the operator wants to know the allowable machining speed corresponding to the tool, which indicates the limit values of the spindle speed and the feed rate, the operator must
According to the rule of thumb, the data of the corresponding tool is searched from the data table paper in which the allowable spindle speed range and the allowable feed rate range are described for each tool, and the data is read.

When inspecting whether or not the spindle speed and the feed rate set in the machine tool are within the permissible range determined by the tool used prior to the start of machining, the operator selects the tool to be used next. Visually recognize the type and size of the tool, read the allowable spindle speed range and allowable feed rate range of the tool from the data table paper, and check the spindle speed and feed rate set for the machine tool. It is artificially determined whether or not is within the allowable range.

[0005]

Conventionally, the detection of the permissible machining speed of the tool is all performed depending on the operator. Therefore, there is a possibility that the detection error may result in a lack of certainty and a burden on the operator. Will be hung.

Whether the work for detecting the permissible machining speed of the tool is artificial is within the permissible range determined by the tool used, such as the spindle speed and the feed rate set in the machine tool prior to the start of machining. It hinders automation of work to inspect whether or not. Since all of the inspection work is manual work, the reliability of the inspection result is lacking and the operator is burdened.

Particularly in the case of NC machine tools, the worker is
Spindle speed written in the C program, spindle speed set in the machine tool by reading the feed rate,
You will need to know the feed rate, which is a troublesome inspection work.

If the above-mentioned inspection is not carried out, machining will be started with a mistake in mounting the tool or due to a mistake in the description, and the specified tool in the NC program and the machining speed condition do not match, and a predetermined machining is started. No processing is done.

This inspection uses a variety of tools in a machine tool with an automatic tool changer such as a machining center. If the specified tool is not properly attached to each pot of the automatic tool changer, the specified tool will be used. It is particularly necessary because it is said that no processing is performed.

The present invention has been made in view of the above-mentioned problems, and provides a method and apparatus for automatically detecting an allowable motion speed of a tool such as a tool without depending on an operator, Furthermore, in a program-controlled machine such as an NC machine tool, automated pre-inspection of whether or not the motion speed such as spindle speed and feed rate set in the machine is within an allowable range determined by the tool, PROBLEM TO BE SOLVED: To provide a motion speed confirmation method and device corresponding to a tool to be used, which prevents work from being started without error in the installation of the tool, or in the operation control program such as an NC program, or with a description error of the motion speed condition. It is an object.

[0011]

In order to achieve the above object, a method for detecting an allowable machining speed of a tool according to claim 1 detects the shape and size of the tool by a detecting means, and the detecting means detects the tool. It is characterized in that a tool is specified from the result, a database in which an allowable motion speed range unique to each tool is defined in advance is used, and an allowable motion speed range corresponding to the specified tool is acquired from the database.

The tools here include cutting tools used in machine tools and assembly machines, press dies, welding torches, assembly tools, manipulators for handling robots, effectors and the like.

In order to achieve the above-mentioned object, a method of detecting an allowable machining speed of a tool according to a second aspect of the present invention detects the shape and size of the tool by a detecting means, and detects the shape of the tool from the detection result of the tool by the detecting means. And the feature value of the dimension is calculated, and the feature value of the shape and dimension of the tool is calculated by using a database that predefines the allowable motion speed range of the tool that is classified according to the feature value of the tool shape and dimension. The allowable motion velocity range of the class corresponding to is acquired from the database.

In order to achieve the above-mentioned object, a method for confirming a motion speed corresponding to a tool used in a program-controlled machine according to a third aspect of the present invention is a motion speed corresponding to a tool used in a program-controlled machine operated by an operation command by an operation control program. In the confirmation method, the shape and dimensions of the tool to be used next are detected by the detection means, the tool is specified from the detection result of the tool by the detection means, and a database in which the allowable motion velocity range specific to the tool is defined in advance is created. Used to acquire the allowable motion speed range corresponding to the specified tool from the database, and determine whether the motion speed previously described in the motion control program is within the allowable motion speed range acquired from the database. The feature is that it is determined by means.

Here, the program-controlled mechanical device means
NC machine tools such as machining centers and turret punch presses, NC automatic assembly equipment, NC robots, etc.

In order to achieve the above-mentioned object, a method for confirming a motion speed corresponding to a tool used in a program-controlled machine according to a fourth aspect of the present invention is a motion speed corresponding to a tool used in a program-controlled machine operated by an operation command by an operation control program. In the confirmation method, the shape and dimensions of the tool to be used next are detected by the detection means, and the feature values of the tool shape and dimensions are calculated from the detection results of the tool by the detection means, and the characteristic values of the tool shape and dimensions are calculated. Using a database that predefines the permissible motion velocity range of tools classified according to the above, obtains the permissible motion velocity range of the class corresponding to the calculated feature values of the shape and dimensions of the tool from the database, and controls the operation. The speed of movement described in the program was acquired from the database. It is characterized by determining the discriminating means whether or not the contents movement speed range.

In order to achieve the above object, a method for detecting an allowable movement speed of a tool according to a fifth aspect or a method for checking a tool used in a program-controlled machine is a method for detecting an allowable movement rate of a tool according to claim 1. 4. The method for checking a tool used in a program-controlled machine according to claim 3, wherein the database defines an allowable motion speed range specific to each tool according to the type of the tool and the tool size, and from the detection result of the tool. The tool is specified by the tool type and the tool size, and the allowable movement speed range of the tool is searched and acquired from the database using the tool type and the tool size as search keys.

In order to achieve the above object, a method for detecting an allowable motion speed of a tool according to claim 6 or a method for checking a tool used in a program-controlled machine is a method for detecting an allowable motion speed of a tool according to claim 2. In the method for confirming a tool to be used in a program-controlled machine device according to claim 4, the tool shape and dimension feature values include a tool length, a maximum diameter, an area of an asymmetric portion, a weight, a ratio of the tool length and a diameter, and a blade. It is characterized in that it is the ratio of the length to the diameter of the part, the asymmetry ratio, the constriction ratio, and the ratio of the weight to the minimum diameter.

In order to achieve the above-mentioned object, a method for detecting an allowable motion speed of a tool according to claim 7 or a method for checking a tool used in a program-controlled machine is a tool allowance according to any one of claims 1 to 6. In the motion velocity detection method or the tool confirmation method used in the program-controlled machine, the database defines the allowable motion velocity range for each material of the workpiece, and the material of the workpiece previously described in the motion control program program. The allowable motion velocity range corresponding to is acquired from the database.

In order to achieve the above-mentioned object, a method for detecting an allowable motion speed of a tool according to claim 8 or a method for checking a tool used in a program-controlled machine is a tool allowance according to any one of claims 1 to 7. In the method for detecting a motion velocity or the method for confirming a tool used in a program-controlled machine, the detecting means includes an optical detecting means for optically detecting the shape of the tool.

In order to achieve the above object, the method for detecting an allowable motion speed of a tool according to claim 9 or the method for checking a tool used in a program-controlled machine is the method for detecting an allowable motion speed of a tool according to claim 8. In the method for checking a tool used in a program-controlled machine, the optical detecting means is an image pickup means, the tool is imaged by the image pickup means, and the shape and size of the tool are detected from tool image data obtained by the image pickup. There is.

In order to achieve the above object, the method for detecting an allowable motion speed of a tool according to claim 10 or the method for checking a tool used in a program-controlled machine is the method for detecting an allowable rotation speed of a tool according to claim 9. In the method for confirming the rotational speed corresponding to the tool used in the program-controlled machine, the imaging position of the tool by the imaging means is a standby position for tool exchange by the automatic tool changing device of the program-controlled machine.

In order to achieve the above object, the method for detecting an allowable motion speed of a tool according to claim 11 or the method for checking a tool used in a program-controlled machine is the method for detecting an allowable rotation speed of a tool according to claim 9. In the method for confirming the rotational speed corresponding to the tool used in the program-controlled machine, the imaging position of the tool by the imaging means is a tool gripping position by the tool-changing arm of the automatic tool-changing device of the program-controlled machine.

In order to achieve the above object, a method for detecting an allowable motion speed of a tool according to a twelfth aspect or a method for confirming a tool to be used in a program-controlled machine is a method for detecting an allowable rotation speed of a tool according to the ninth aspect. In the method for confirming the rotational speed corresponding to the tool used in the program-controlled machine, the image pickup position of the tool by the image pickup means is a tool mounting position with respect to the program-controlled machine.

In order to achieve the above-mentioned object, the method for detecting an allowable motion speed of a tool according to claim 13 or the method for checking a tool used in a program-controlled machine is a tool allowance according to any one of claims 1-12. In the movement speed detection method or the used tool confirmation method in the program-controlled machine, the allowable movement speed of the tool is characterized by a tool rotation speed, a tool feed speed, a tool movement speed, or a combination thereof.

Further, in order to achieve the above-mentioned object, an apparatus for detecting an allowable motion speed of a tool according to a fourteenth aspect of the present invention is a detection means for detecting the shape and size of the tool, and the shape and size of the tool detected by the detection means. Tool specifying means for specifying a tool more, a database in which an allowable movement speed range unique to each tool is defined in advance, and an allowance for obtaining an allowable movement speed range corresponding to the tool specified by the tool specifying means from the database It is characterized by having a motion velocity range acquisition means.

In order to achieve the above-mentioned object, a device for detecting an allowable motion speed of a tool according to a fifteenth aspect is a detecting means for detecting a shape and a size of the tool, and a shape and a size of the tool detected by the detecting means. A feature amount calculating means for calculating a feature amount relating to the shape and dimension of the tool, a database in which an allowable motion velocity range classified according to the feature amount of the tool shape and dimension is defined in advance, and the feature amount calculating means And a permissible motion velocity range acquisition means for acquiring the permissible motion velocity range of the class corresponding to the calculated feature amount of the tool from the database.

Further, in order to achieve the above-mentioned object, a tool-use motion speed confirmation device for a program-controlled machine according to a sixteenth aspect of the present invention is a tool-use motion speed for a program-controlled machine that operates according to an operation command by an operation control program. In the confirmation device, detection means for detecting the shape and size of the tool to be used next, tool specifying means for specifying the tool from the shape and size of the tool detected by the detection means, and the allowable motion peculiar to the tool A database in which a speed range is defined in advance, a feature amount calculation unit that calculates a feature amount related to the tool shape and size from the shape and size of the tool detected by the detection unit, and a shape and size of the tool according to the feature amount of the tool. A database in which the allowable motion velocity range classified into classes is defined in advance, and The allowable movement speed range acquiring means for acquiring the allowable movement speed range of the class corresponding to the feature amount of the tool calculated by the means from the database, and the allowable movement speed range corresponding to the tool specified by the tool specifying means, It has an allowable movement speed range acquisition means acquired from the database and a judgment means for judging whether the movement speed previously described in the motion control program is within the allowable movement speed range acquired from the database. It is characterized by that.

Further, in order to achieve the above-mentioned object, a motion velocity confirmation device for a tool used in a program-controlled machine according to a seventeenth aspect of the invention is a motion velocity corresponding to a tool used in a program-controlled machinery which operates according to an operation command by an operation control program. In the confirmation device, a detection unit that detects the shape and size of the tool to be used next, and a feature amount calculation unit that calculates a feature amount related to the tool shape and size from the shape and size of the tool detected by the detection unit, A database that defines in advance the allowable motion speed range that is classified according to the feature amount of the tool shape and dimensions,
A permissible motion velocity range acquisition unit for acquiring from the database a permissible motion velocity range of a class corresponding to the feature amount of the tool calculated by the feature amount calculation unit, and the motion velocity described in advance in the motion control program is stored in the database. It is characterized in that it has a determining means for determining whether or not it is within the acquired allowable motion velocity range.

Further, in order to achieve the above-mentioned object, an allowable motion speed detecting device for a tool according to claim 18 or a motion speed confirming device corresponding to a tool used in a program-controlled mechanical device is an allowable motion speed for a tool according to claim 14. The detection device or the tool check device used in the program-controlled machine device according to claim 16, wherein the database defines an allowable motion speed range according to a tool type and a tool size, and the tool specifying means is a tool type. The tool is specified by the tool size and the tool size, and the allowable motion speed range of the tool is searched and acquired from the database using the tool type and the tool size specified by the tool specifying means as search keys.

Further, in order to achieve the above-mentioned object, an allowable movement speed detecting device for a tool according to claim 19 or a movement speed confirming device corresponding to a tool used in a program-controlled mechanical device is an allowable movement speed for a tool according to claim 15. In the detection device or the tool-used confirmation device in the program-controlled machine device according to claim 17, the calculation of the feature value of the shape and the dimension of the tool by the feature amount computing means is performed by:
Tool total length, maximum diameter, asymmetrical area, weight, ratio of tool length to diameter, ratio of blade length to diameter, asymmetry ratio,
It is characterized by the constriction rate and the ratio of weight to minimum diameter.

In order to achieve the above-mentioned object, a tool allowable motion speed detecting device according to claim 20 or a motion speed confirmation device corresponding to a tool used in a program-controlled machine device is defined in any one of claims 14 to 19. In the tool usage confirmation device used in the tool allowable motion speed detection device or the program-controlled machine device used tool verification device, the database defines an allowable motion speed range for each material of the workpiece, and obtains the allowable motion speed range. The means is characterized in that the allowable motion velocity range corresponding to the material of the workpiece described in advance in the motion control program is acquired from the database.

In order to achieve the above-mentioned object, a tool allowable motion speed detecting device according to claim 21 or a motion speed confirmation device corresponding to a tool used in a program-controlled machine device is defined in any one of claims 14 to 20. In the tool allowable movement speed detection device or the tool-used confirmation device in the program-controlled machine device, the detection means includes an optical detection means for optically detecting the shape of the tool.

In order to achieve the above-mentioned object, an allowable movement speed detecting device for a tool according to a twenty-second aspect or a movement speed confirmation device for a tool used in a program-controlled mechanical device according to a twenty-first aspect is the allowable movement speed for a tool according to the twenty-first aspect. In a tool used confirmation device in a detection device or a program-controlled machine device, the optical detection means is an imaging means, the tool is imaged by the imaging means, and the shape and size of the tool are detected from the tool image data obtained by the imaging. Is characterized by.

Further, in order to achieve the above-mentioned object, an allowable motion speed detecting device for a tool according to a twenty-third aspect or a motion speed confirmation device corresponding to a tool used in a program-controlled mechanical device is a permissible motion speed for a tool according to the twenty-second aspect. A tool used confirmation device in a detection device or a program-controlled machine device has an automatic tool changer, a dark box is provided at a standby position for tool change by the automatic tool changer, and the imaging means images a tool in the dark box. It is characterized by doing.

In order to achieve the above object, a tool allowable motion speed detecting device according to a twenty-fourth aspect or a tool corresponding motion speed confirming device in a program-controlled mechanical device according to any one of the fourteenth to twenty-third aspects. In the tool allowable motion speed detection device or the tool confirmation device used in the program-controlled machine device, the tool allowable motion speed is characterized by a tool rotation speed, a tool feed speed, a tool movement speed, or a combination thereof.

[0037]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 and 2 show an NC with an automatic tool changer to which a tool allowable movement speed detecting device and a tool-use movement speed confirming device according to the present invention are applied.
1 illustrates one embodiment of a machine tool.

The program-controlled machine has a saddle 5 on a column 3 provided on the bed 1, and a spindle 9 on which a tool 7 is replaceably mounted on the saddle 5.

A tool magazine 13 of an automatic tool changer (automatic tool) changer 11 is provided on the side of the bed 1. The tool magazine 13 is a loop-shaped moving band 15
Has a plurality of pots 17, each of which has a tool 7
Is detachably stored. In the tool change standby position, the pot 17 can be rotationally displaced 90 degrees about the vertical axis as shown in the drawing, and the tool 7 stored in the pot 17 can be taken out by the tool change arm 19. . The tool exchanging arm 19 takes out the tool 7 stored in the pot 17 at the tool exchanging standby position and mounts it on the spindle 9.

A dark box 21 is provided at this tool change standby position. The dark boxes 21 are provided on the upper and lower sides of the tool change standby position, and receive the pot 17 and the tool 7 of the pot 17 which are rotationally displaced 90 degrees about the vertical axis at the tool change standby position.

The dark box 21 is provided with a pot 17 and an inlet port 23 for the tool 7 of the pot 17 and an outlet port 25 by the tool exchanging arm 19. The inlet port 23 and the outlet port 25 can be opened and closed by a door 27. , 29.

At the upper part of the dark box 21, CC as an image pickup means is provided.
The D camera 31 is arranged toward the tool 7 in the tool change standby position, and two light sources 33 for illuminating the tool 7 in the tool change standby position are arranged in the lower part of the dark box 21. That is, the CCD camera 31 is provided on one side of the tool change standby position.
However, the light sources 33 for illumination are arranged on the other side.

The light source 33 is surrounded by a CCD
A light shielding plate 35 is provided so as not to be imaged by the camera 31.

With these configurations, the tool 7 at the tool change standby position is imaged with its edge emphasized by the CCD camera 31 in a state where the light source 33 in the dark box 21 illuminates the outer portion with high illuminance. In other words, the CCD camera 31 images the tool 7 illuminated by the light source 33 without shadow in the dark box 21 with a black background in high contrast and outputs an analog image signal.

FIG. 3 shows an NC tool permissible motion velocity detection device and a tool motion velocity confirmation device according to the present invention.
The 1st example of the system configuration when applied to a machine tool is shown.

An image conversion unit 41 is connected to the CCD camera 31. The image conversion unit 41 converts the analog image signal output from the CCD camera 31 into a digital image signal, binarizes the digital image signal, and stores it in the frame memory 43 as tool image data.

The tool identifying unit 45 takes in the tool image data from the frame memory 43, compares the tool image data with the standard tool image data stored in advance in the tool image database 47 for each type of tool, and recognizes the shape. The type of the tool is identified by the technique, the tool size is acquired from the tool image data of the tool, and the tool 7 is specified by the type of the tool and the tool size.

The shape recognition for identifying the tool type by the tool identifying unit 45 prepares standard tool image data obtained by previously capturing an image of the tool to be used, and performs pattern matching to compare this with the tool image data to be identified. Publicly known method such as a feature value comparison method in which the shape feature value of the tool to be used is registered in the tool image database 47 in advance and the feature of the tool to be identified is extracted by a two-dimensional FFT and the feature values are compared. It can be performed by a shape recognition method.

The tool type here is, for example, a milling type,
The drill, end mill, tap, reamer system, boring system, and side cutter system are used, and standard tool image data for each tool type as shown in FIGS. 4A to 4D is stored in the tool image database 47. deep. Note that FIG.
Is a milling system, FIG. 4 (b) is a drill / end mill / tap / reamer system, and FIG. 4 (c) is a boring system.
(D) shows each side cutter system.

The tool size is the tool diameter in the milling system,
Number of flutes, tool diameter and tool axis length for drills, end mills, taps and reamers, boring length and effective length for boring systems, and cutter diameter and cutter width for side cutter systems.

The tool coincidence discriminating unit 49 fetches the tool data described in the NC program to be executed next from the NC program decoding unit 51, that is, the type of the tool and the tool size, and the tool identified by the tool specifying unit 45. It is determined whether or not the type and the tool size match.

The processing speed (movement speed) suitability determination unit 53
From the NC program decoding unit 51, the spindle rotational speed, the feed rate, and the material data (workpiece material data) of the workpiece described in the NC program to be executed next are read in, and the type of the tool identified by the tool identifying unit 45 The tool dimensions (tool diameter, tool length) and the allowable spindle speed (tool rotation speed) range and allowable feed speed range corresponding to the work material read from the NC program are calculated from the allowable machining speed range (allowable movement speed range) database 55. The spindle speed that is read and acquired and described in the NC program is the allowable machining speed range database 55.
Whether it is within the allowable spindle speed range read from
It is determined whether or not the feed speed described in the NC program is within the allowable feed speed range read from the allowable machining speed range database 55.

The allowable machining speed range database 55 has, for example, a database file for each type of tool, and each database file has tool dimensions (tool diameter, tool length).
The permissible tool rotation speed (spindle speed) range and feed rate range are defined in advance for each type of work material, and the permissible tool rotation speed corresponding to the tool type, tool size, and work material as search keys. The range and feed rate range are searched.

The allowable tool rotation speed range and the feed speed range for each tool type and each tool size stored in the allowable machining speed range database 55 can be set by calculation of the dangerous rotation speed of the tool, experiment, empirical rule and the like.

The image converting unit 41, the frame memory 43, the tool specifying unit 45, the tool image database 47, the tool matching discriminating unit 49, the machining speed suitability discriminating unit 53, and the permissible machining speed range database 55 include a hard disk, a CD ROM, and the like. The external storage device can be embodied by an image processing device by a connected computer system.
The tool coincidence discriminating unit 49 and the machining speed suitability discriminating unit 53 are CNC.
The tool image database 47 and the allowable machining speed range database 55 can be realized by a sequencer of the apparatus and can be constructed using an external storage device of the CNC apparatus.

In using this tool confirmation device,
In the NC program, the type of tool and the tool size are described as tool data, and the material data of the workpiece are described.
These descriptions are performed in the order of the tool type, the tool diameter, the tool length, and the material data using an unspecified code, for example, M12, in the auxiliary function. In addition, a start command code for checking the tool used is described in the NC program. This start command code is M17.

FIG. 5 shows an example of the NC program. In this NC program, the first line is a line for designating the tool number by the T code. By executing this first line, the tool to be used next moves to the tool standby position of the automatic tool changer 11, and the dark box 21 Can be put inside.

A start command for checking the tool to be used is output by M17 on the second line, and the operation to check the tool to be used is started. By this start command, the CCD camera 31 captures an image of the tool in the dark box 21, and the type of tool, the tool diameter, the tool length, the material data and the material data by M12 described in the third line and the sixth line are described. The spindle rotational speed S and the feed speed F are pre-read, and these are written in a buffer memory or the like incorporated in the tool matching determination unit 49 and the processing speed suitability determination unit 53.

A tool start confirmation command may be output by inputting a limit switch signal from the machine side indicating the completion of execution of the T code. In this case, the description of M17 is omitted.

Since the NC program has the description of the tool position offset by G43 (7th line) and the description of the tool radius correction by G41 (or G42) (8th line), the tool length is the tool position offset by G43. The value and the tool diameter can be obtained by pre-reading the tool diameter correction value by G41 (or G42). In this case, the description of the tool dimension in M12 can be omitted, and M
The description in 12 only needs the tool type and material data.

Tool position offset value by G43 and G4
The description of the tool radius correction value by 1 (or G42) may be directly specified by a real value or may be specified by a coded numerical value of about two digits. In the example of FIG. 5, the tool position offset value is H. The code and the tool radius correction value are described by the D code. The relationship between the H code and the tool position offset value and the relationship between the D code and the tool radius correction value are user-defined by the contrast data table.

FIG. 6 is a flow chart showing an implementation procedure when the first embodiment of the tool allowable movement speed detection method and tool used movement speed confirmation method according to the present invention is applied to an NC machine tool.

First, the tool type, the tool size, the work material data, the spindle rotation speed, and the feed speed described in the NC program are pre-read, and these data are latched (step 10).

Next, the CCD camera 31 captures an image of the tool in the dark box 21 (step 20), the tool identification section 45 identifies the tool type from the image data of the imaged tool, and the tool dimension is measured from the image data. (Step 30).

Next, the tool coincidence discriminating unit 49 discriminates whether or not the tool type identified from the tool image data coincides with the tool type described in the NC program (step 40). If they do not match, an error code to that effect is set (step 50). As a result, it is possible to prevent the machining from being started while the tool is incorrectly mounted.

On the other hand, in the case of coincidence, the tool coincidence discriminating unit 49 discriminates whether or not the tool dimension measured from the tool image data coincides with the tool dimension described in the NC program (step 60). In case of disagreement,
An error code to that effect is set (step 50). As a result, it is possible to prevent the machining from being started while the tool is incorrectly mounted.

On the other hand, if they match, the corresponding allowable spindle speed range and allowable feed speed range are read out from the allowable machining speed range database 55 using the tool type, tool size and work material data as search keys (step). 70). Thereby, the allowable machining speed of the tool is detected.

Next, the machining speed suitability discriminating unit 53 discriminates whether or not the spindle speed described in the NC program is within the permissible spindle speed range read from the permissible machining speed range database 55 (step 80). .

If the spindle speed described in the NC program is not within the allowable spindle speed range read from the allowable machining speed range database 55, that is, if there is a mismatch, an error code to that effect is set ( Step 50). As a result, it is possible to prevent the machining from being started with a mistake in the description of the designated tool or the spindle speed in the NC program.

On the other hand, if the spindle speed described in the NC program is within the allowable spindle speed range read from the allowable machining speed range database 55, NC
The machining speed suitability determination unit 53 determines whether the feed speed described in the program is within the allowable feed speed range read from the allowable speed range database 55 (step 90).

If the feed speed described in the NC program is not within the allowable feed speed range read from the allowable machining speed range database 55, that is, if there is a mismatch, an error code to that effect is set (step 5).
0). As a result, it is possible to prevent the machining from being started with the description error of the designated tool or the feed rate in the NC program.

On the other hand, when the feed speed described in the NC program is within the allowable feed speed range read from the allowable machining speed range database 55, the tool used is proper and the spindle rotation corresponding to the tool used. The number of tools and the feed rate are considered to be appropriate, and the confirmation of the tool used is completed.

FIG. 7 shows an NC tool allowable motion velocity detecting device and a tool motion velocity confirming device according to the present invention.
The 2nd example of the system configuration when applied to a machine tool is shown. In addition, in FIG. 7, the portions corresponding to those in FIG. 3 are denoted by the same reference numerals as those in FIG. 3, and the description thereof will be omitted.

The shape feature value extraction unit 57 takes in the tool image data from the frame memory 43 and extracts the shape feature value of the tool from the tool image data by edge extraction or the like. This shape feature value extraction can be performed by a known shape recognition method such as a two-dimensional FFT.

The tool characteristic amount calculation unit 59 identifies the type of the tool from the shape characteristic value of the tool extracted by the shape characteristic value extraction unit 57, and calculates the preset characteristic amount according to the type of the tool. . The feature amount calculated by the tool feature amount calculation unit 59 is the total tool length, tool diameter, area, tool weight, constriction rate,
It is the ratio of the total tool length to the tool diameter, the ratio of the blade length to the diameter, the tool weight to the tool diameter, the asymmetry ratio of the blade, and the like.

The allowable machining speed range acquisition unit 61 includes a database management unit, sets a tool identification code classified into classes according to the tool feature amount calculated by the tool feature amount calculation unit 59, and sets the set tool identification code. The allowable machining speed range corresponding to is read from the allowable machining speed range database 63.

The allowable machining speed range database 63 predefines an allowable tool rotation speed (spindle rotation speed) range and a feed speed range in accordance with each tool identification code, and the tool identification code is used as a search key to allow the corresponding processing. The tool rotation speed range and feed speed range are searched.

The allowable tool rotation speed range and the feed speed range for each tool identification code stored in the allowable machining speed range database 63 can be set by calculation of the dangerous rotation speed of the tool, experiment, empirical rule and the like.

The machining speed suitability determination unit 53 takes in the spindle speed by S code and the feed speed by F code described in the NC program to be executed next from the NC program decoding unit 51, and describes it in the NC program. Whether the spindle rotational speed is within the allowable tool rotation speed range read from the allowable machining speed range database 63 and whether the feed speed described in the NC program is within the allowable feed speed range read from the allowable machining speed range database 63. It is determined whether or not there is.

The image converter 41 and the frame memory 4
3. The shape feature extraction unit 57 can be embodied by a general-purpose image processing device, and the tool feature amount calculation unit 59 and the machining speed suitability determination unit 5
3. The allowable machining speed range acquisition unit 61 and the allowable machining speed range database 63 can be embodied by a computer system such as a personal computer to which an external storage device such as a hard disk is connected, or can be embodied by a sequencer of a CNC device. You can also do it.

FIG. 8 is a flow chart showing the procedure when the second embodiment of the tool permissible motion speed detection method and tool use motion speed confirmation method according to the present invention is applied to an NC machine tool.

First, the CCD camera 31 images the tool in the dark box 21 (step 100), and the CCD camera 31
Converts the analog image signal output by the device into a digital image signal, binarizes the digital image signal, and stores it in the frame memory 43 as tool image data (step 1).
10).

Next, the shape feature value extraction unit 57 extracts the shape feature value of the tool from the tool image data in the frame memory 43 (step 120).

Next, a tool identification routine is executed (step 130). In this tool identification routine, the tool feature amount calculation unit 59 calculates the feature amount of the tool from the shape feature value of the tool extracted by the shape feature value extraction unit 57, and the tool is classified into classes according to the feature amount. Set the identification code.

Next, the allowable machining speed range acquisition unit 61 reads and sets the allowable tool rotation speed range Smin to Smax and the feed speed range Fmin to Fmax of the corresponding tool identification code from the allowable machining speed range database 63 (step 140). .

In this embodiment, the tool identification code is C1 ...
There are four codes C4, and the tool identification code C1 sets the allowable tool rotation speed range Smin to Smax and the feed speed range Fmin to Fmax in the lowest speed range.
Allowable tool rotation speed range Smin to Sma in maximum speed range of 4
x and the feed speed range Fmin to Fmax are set, and the allowable tool rotation speed range Smin to Smax and the feed speed range Fmin to in the intermediate speed range are set by the tool identification codes C2 and C3.
Fmax shall be set.

Next, the NC program decoding unit 51 reads the spindle speed Snc according to the S code and the feed speed Fnc according to the F code described in the NC program to be executed next (step 150).

Next, the machining speed suitability determination unit 53 determines whether or not the spindle rotational speed Snc is within the permissible machining speed range Smin to Smax (step 160). When the spindle rotational speed Snc is not within the allowable processing speed range Smin to Smax, an alarm indicating that the spindle rotational speed Snc is inappropriate is output (step 170).

The spindle speed Snc is the permissible machining speed range Sm.
If it is in to Smax, then it is determined whether or not the feed speed Fnc is within the allowable feed speed range Fmin to Fmax (step 180). When the feed speed Fnc is not within the allowable feed speed range Fmin to Fmax, an alarm indicating that the feed speed Fnc is inappropriate is output (step 190).

The spindle rotational speed Snc is the permissible machining speed range Sm.
When it is not in to Smax or when the feed speed Fnc is not within the allowable feed speed range Fmin to Fmax,
This is the case where the specified tool in the NC program and the machining speed condition match due to a tool mounting error or a description error. Check the above-mentioned discrimination for the tool mounting error and the NC program description error for the specified tool and processing speed condition. it can.

FIG. 9 shows a tool identification routine. The tool identification routine first executes an asymmetrical tool identification routine (step 200), and determines from the identification result whether or not the tool is an asymmetrical tool (step 210). A typical example of an asymmetric tool is a boring tool, and there is a rotation stopping tool.

If the tool is not an asymmetrical tool, the symmetrical tool division routine (step 250) is executed. On the other hand, if the tool is an asymmetrical tool, the asymmetry rate Y = B / A is calculated (step 220). As shown in FIG. 19, A and B are areas obtained by dividing the asymmetric portion of the tool by the central axis. Here, the large area side is defined as area A, and the small area side is defined as area B.

Next, it is determined whether or not the asymmetry rate Y is equal to or greater than the set value Yset (step 230). Set value Yse
t is set to a value close to 1 which is about 0.8, and Y ≧ Y
If it is set, it is assumed that the milling cutter has an odd number of blades, and the symmetrical tool division routine (step 250) is executed. For symmetrical tools, milling tools, side cutter tools,
Drill tools, end mill tools, tap tools, reamer tools, etc.

If Y ≧ Yset is not satisfied, the asymmetric tool division routine (step 240) is executed.

When the asymmetric tool sorting routine or the symmetric tool sorting routine is completed, the tool identification code set in those routines is output (step 260).

If the tool is not identified in any of the tool classes, a tool identification inability alarm is output (step 260).

An identification completion signal is output by the tool identification code or the tool unidentification alarm output (step 27).
0).

FIG. 10 shows an asymmetric tool segmentation routine. In the asymmetric tool classification routine, first, the anti-rotation tool identification routine (step 300) is executed, and it is determined whether or not it is the anti-rotation tool based on the identification result (step 3).
10). The anti-rotation tool is a tool with a coolant supply holder, an angle head tool, a multi-axis bed tool,
For example, a touch sensor.

If the tool is a non-rotating tool, the tool identification code C1 is set (step 320).

If the tool is not a turning stop tool, a boring tool identification routine (step 330) is executed, and it is judged from the identification result whether the tool is a special boring tool (step 340). If it is a special boring tool, a tool identification code C1 is set (step 320).

If it is not a special boring tool, a boring tool discrimination routine (step 350) is executed.

FIG. 11 shows an anti-rotation tool identification routine. In the anti-rotation tool identification routine, the area Sus of the asymmetrical portion is calculated from the shape characteristic value of the tool extracted by the shape characteristic value extraction unit 57 (step 400), and it is determined whether the area Sus of the asymmetrical portion is the set value Susset or more. It is determined (step 410). If Sus ≧ Susset, the anti-rotation tool code is assigned as the anti-rotation tool (step 420).

FIG. 12 shows a boring tool identification routine. In the boring tool identification routine, the number of asymmetric parts in the entire tool is extracted from the shape feature value of the tool extracted by the shape feature value extraction unit 57 (step 500). In the example of FIG. 20, the number of asymmetric parts is extracted as “2”.

Next, it is judged whether or not the number of asymmetric parts is two or more (step 510). If the number of asymmetric parts is two or more, the special boring tool code is assigned as the special boring tool (step 520).

When the number of asymmetric parts is not two or more,
That is, when the number of asymmetrical portions is one, the diameter Ds (see FIG. 21) of the symmetrical portion adjacent to the asymmetrical portion is calculated from the shape characteristic value of the tool extracted by the shape characteristic value extraction unit 57 (step S21). 530), the diameter Ds of the symmetrical portion is the set value D
It is determined whether it is larger than set (step 54).
0). If Ds ≧ Dsset, the special boring tool code is given as the special boring tool (step 520).

FIG. 13 shows a boring tool division routine. In the boring tool classification routine, as the parameter calculation, from the shape feature value of the tool extracted by the shape feature value extraction unit 57, the tool total length L, the asymmetrical area Sus, and the blade length l shown in FIG. And the diameter d, the ratio 1 / d, the ratio L / D between the tool total length L and the tool diameter D,
The asymmetry rate Y = B / A is calculated (step 600).

Next, it is sequentially determined whether or not L, 1 / d, Sus, and L / D are within the range of the previously defined class α (steps 610 to 640). L, l / d, Su
If at least one of s and L / D is within the range of class α, the tool identification code C1 is set (step 75).
0).

If none of L, l / d, Sus, and L / D is in the range of class α, it is determined whether the shank portion s is smaller than the tool tip c (see FIG. 23) (step 6).
50). When the shank portion s is smaller than the tool tip c, the tool identification code C1 is set (step 75).
0).

If the shank portion s is not smaller than the tool tip c, it is determined whether the asymmetry ratio Y is equal to or less than the set value Yset (step 660). Set value Ys here
et is set to a value smaller than the set value Yset in step 230, and when Y ≦ Yset,
The tool identification code C2 is set (step 760).

If Y ≦ Yset is not satisfied, then L, l
It is sequentially determined whether / d, Sus, and L / D are within the predefined class β range (step 670).
~ 700). If at least one of L, l / d, Sus, and L / D is within the range of class β, the tool identification code C2 is set (step 760).

If none of L, 1 / d, Sus, and L / D is in the range of class β, then L, 1 / d, Su.
It is sequentially determined whether or not s and L / D are within the predefined class γ range (steps 710 to 74).
0). If at least one of L, l / d, Sus, and L / D is within the range of class γ, the tool identification code C3 is set (step 770).

On the other hand, if none of L, l / d, Sus, and L / D is in the range of class γ, the tool identification code C4 is set (step 780).

FIG. 14 shows a symmetric tool division routine. In this symmetric tool division routine, as the parameter calculation, the constriction ratio Ke = the tool maximum diameter Dmax / the tool minimum diameter Dmin shown in FIG. 24 is calculated from the shape feature value of the tool extracted by the shape feature value extraction unit 57. Overall length L, maximum tool diameter Dmax, tool weight W, blade length l
Ratio of diameter to diameter d / d, total tool length L and maximum tool diameter D
The ratio L / Dmax with respect to max and the ratio W / Dmin with respect to the tool weight W and the minimum tool diameter Dmin are calculated (step 800).

In the calculation of the constriction rate Ke, the target tool maximum diameter Dmax is limited to the tool tip diameter side of the tool minimum diameter Dmin. Therefore, in the example shown in FIG. 24, the neck ratio Ke is Dχ / Dmin.

The tool weight W can be calculated from the area of the tool and the specific gravity of the tool material, and the tool minimum diameter Dmin is limited to the minimum diameter on the holder side from the center of gravity of the tool.

When the parameter calculation is completed, the class α discrimination routine (step 810) is executed next, and if the tool discrimination code = C1 is not set (No in step 820), then the class β discrimination routine (step 830). If the tool identification code = C2 is not set (No at step 840), the class γ identification routine (step 850) is executed next, and if the tool identification code = C3 is not set (No at step 860), The class δ identification routine is executed (step 870).

If the tool identification code = C4 is not set by executing the class δ identification routine (No at step 880), the tool identification inability alarm code is set (step 890).

FIG. 15 shows a class α discrimination routine. In the class α identification routine, Ke, L, Dmax,
It is sequentially determined whether or not W, 1 / d, L / Dmax, and W / Dmin are within the range of the class α defined in advance (steps 900 to 960). Ke, L, Dmax,
If at least one of W, l / d, L / Dmax, and W / Dmin is within the range of class α, the tool identification code C1 is set (step 970).

FIG. 16 shows a class β identification routine. In the class β identification routine, Ke, L, Dmax,
It is sequentially determined whether or not W, 1 / d, L / Dmax, and W / Dmin are within the predefined class β range (steps 1000 to 1060). Ke, L, Dma
If at least one of x, W, 1 / d, L / Dmax, and W / Dmin is within the range of class β, the tool identification code C
2 is set (step 1070).

FIG. 17 shows a class γ discrimination routine. In the class γ discrimination routine, Ke, L, Dmax,
It is sequentially determined whether or not W, 1 / d, L / Dmax, and W / Dmin are within the predefined class γ range (steps 1100 to 1160). Ke, L, Dma
If at least one of x, W, 1 / d, L / Dmax, and W / Dmin is in the range of class γ, the tool identification code C
3 is set (step 1170).

FIG. 18 shows a class δ discrimination routine. In the class δ identification routine, Ke, L, Dmax,
It is sequentially determined whether or not W, 1 / d, L / Dmax, and W / Dmin are within the predefined class δ range (steps 1200 to 1260). Ke, L, Dma
If at least one of x, W, 1 / d, L / Dmax, and W / Dmin is within the range of class δ, the tool identification code C
4 is set (step 1280).

The set values of the respective classes α to δ of L, 1 / d, L / D and L / Dmax are set to different values for the boring tool section and the symmetrical tool section.

The image pickup position of the tool by the CCD camera 31 is not limited to the tool change standby position. The image pickup position may be the tool grip position by the tool change arm 19, the tool mounting position on the spindle 9, or the like. Any position may be used as long as it can image the tool to be used next before the start of processing.

The method and the device for detecting the allowable motion speed of the tool and the method and the device for confirming the tool used in the program-controlled machine according to the present invention are also applied to the robot. It may be the speed of movement of the robot arm with the tool attached.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to these, and various embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art that it is possible.

[0126]

As can be understood from the above description, in the method and apparatus for detecting the allowable machining speed of a tool according to claims 1 and 14, the tool is specified from the detection result of the tool by the detecting means, and the specified tool is identified. Since the corresponding allowable movement speed range is acquired from the database, the allowable machining speed of the tool can be automatically and accurately detected without depending on the operator.

In the tool permissible machining speed detecting method and apparatus according to claims 2 and 15, the feature value of the shape and size of the tool is calculated from the detection result of the tool by the detecting means,
Since the allowable motion speed range of the class corresponding to the calculated feature values of the shape and dimensions of the tool is acquired from the database, the allowable machining speed of the tool can be automatically and accurately detected without depending on the operator. .

In this case, the database only needs to define the permissible machining speed range for each class, and normally, the permissible spindle speed range for one class may be about 5000 prm. Is about 20000 prm, the number of classes may be about 4, and the data capacity of the database does not become enormous.

In the method and apparatus for confirming the motion speed of the tool used in the program-controlled machine according to claims 3 and 16, the tool to be used next is specified from the detection result of the tool by the detection means, and the allowable corresponding to the specified tool. The movement speed range is acquired from the database, and the determination means determines whether or not the movement speed previously described in the operation control program is within the allowable movement speed range acquired from the database. Therefore, the spindle set in the machine tool It is possible to automate the preliminary inspection of whether the operating speed of the program-controlled mechanical device such as the number of revolutions or the feed speed is within the allowable range determined by the tool used, and it is possible to leave the tool installed incorrectly, or in the operation control program such as NC program. It is assumed that machining will be started with the description error of the specified tool and operating speed condition. It can be.

According to the method for confirming movement speed of a tool used in a program-controlled machine according to claims 4 and 17, characteristic values of the shape and size of the tool to be used next are calculated from the detection result of the tool by the detecting means, and calculated. Whether the allowable motion speed range of the class corresponding to the feature value of the tool shape and dimensions is acquired from the database, and whether the motion speed previously described in the motion control program is within the allowable motion speed range acquired from the database It is possible to automate the pre-inspection whether the operating speed of the program-controlled machine device, such as the spindle speed set in the machine tool, the feed rate, etc., is within the allowable range determined by the tool, because Or the specified tool and operation speed in the operation control program such as NC program That the process is started while the matter of description error can be avoided in advance.

Also in this case, the database only needs to define the permissible machining speed range for each class, and normally, the permissible spindle speed range of one class may be about 5000 prm, so that the maximum spindle speed is maximum. Value is 20000 prm
As long as the number of classes is about four, the data capacity of the database does not become huge.

In the method and apparatus for detecting the permissible motion speed of a tool according to claims 5 and 18, or the method and the device for confirming a tool used in a program-controlled machine, the database is a permissible motion specific to each tool according to the type of the tool and the tool size. The speed range is defined, the tool is identified by the tool type and the tool size from the detection result of the tool,
Since the allowable motion velocity range of the tool is searched and acquired from the database using the tool type and tool dimension as the search key,
Data acquisition within the permissible motion velocity range of the tool is accurately performed for each tool.

In the method and apparatus for detecting an allowable motion speed of a tool or the method and apparatus for checking a tool used in a program-controlled machine according to claims 6 and 19, the feature values of the shape and size of the tool include the tool length, the maximum diameter, and the asymmetric portion. Area, weight, ratio of length to diameter of tool, ratio of length to diameter of blade, asymmetry ratio, constriction ratio, ratio of weight to minimum diameter, the tool has sufficient characteristic values Will be classified into.

In the method and apparatus for detecting an allowable motion speed of a tool and the method for checking a tool used in a program-controlled machine according to claims 7 and 20, the database defines an allowable motion speed range for each material of a workpiece. Since the allowable motion speed range corresponding to the material of the work piece described in advance in the motion control program is acquired from the database, the allowable motion speed range of each tool can be calculated in consideration of the material of the work piece. Can be set more accurately.

According to the method and apparatus for detecting an allowable motion velocity of a tool or the method and apparatus for confirming a tool used in a program-controlled machine according to claims 8 and 21, the tool is optically detected by the optical detecting means, so that the tool comes into contact with the tool. It is possible to detect the type and size of the tool efficiently without any need.

In the method and apparatus for detecting an allowable motion velocity of a tool according to claims 9 and 22, or the method and apparatus for confirming a tool to be used in a program-controlled machine, the tool is imaged by an image pickup means such as a CCD camera, and the tool image data obtained by the image pickup is performed. Since the tool is identified and detected by the shape recognizing means, the type and size of the tool can be detected accurately and efficiently without touching the tool.

According to the method for detecting an allowable motion speed of a tool or the method for checking a tool used in a program-controlled machine according to claim 10, an image of the tool to be used next is picked up at a standby position for tool exchange by the automatic tool exchanging device. In the method for detecting the allowable motion speed of the tool according to 11 or the method for checking the tool used in the program-controlled machine,
The tool to be used next is imaged at the tool gripping position by the tool exchanging arm, and the tool mounting position with respect to the spindle of the machine tool is used in the method for detecting the allowable motion speed of the tool or the method for checking the tool used in the program-controlled machine device according to claim 12. Since the tool to be used next is imaged at, the tool can be reliably imaged before use in any case.

According to the thirteenth and twenty-fourth aspects of the tool permissible motion velocity detection method and device or the tool control method and device for use in a program-controlled machine, the tool permissible motion velocity includes tool rotation speed, tool feed speed, and tool movement speed. , Or a combination thereof, the allowable movement speed of the tool can be set by the tool rotation speed, the tool feed speed, the tool movement speed, or a combination thereof.

According to a twenty-third aspect of the invention, there is provided a tool allowable motion speed detecting device or a tool-use motion speed confirming device for use in a program-controlled mechanical device, wherein the tool is picked up by an image pickup means in a dark box provided at a standby position for tool change by the automatic tool changing device. The image data of the tool image clearly shows the tool image with the black background, and the tool can be reliably identified by the tool image data.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an NC machine tool with an automatic tool changer to which a tool allowable motion speed detection device and a tool-use motion speed confirmation device according to the present invention are applied.

FIG. 2 is a NC to which a tool allowable motion speed detection device and a tool motion speed confirmation device according to the present invention are applied.
It is a side view which shows one Example of the tool magazine part of the automatic tool changer of a machine tool.

FIG. 3 is a block diagram showing a first embodiment of the system configuration when the allowable motion velocity detection device for tools and the motion velocity confirmation device for use tools according to the present invention are applied to an NC machine tool.

4A to 4D are explanatory views showing examples of types of tools used.

FIG. 5 is a program list diagram showing an actual example of an NC program.

FIG. 6 shows a first embodiment of a method for detecting an allowable motion speed of a tool and a method for confirming a motion speed corresponding to a tool to be used according to the present invention.
It is a flowchart which shows the implementation point when applied to C machine tool.

FIG. 7 is a block diagram showing a second embodiment of the system configuration in the case of applying the allowable motion velocity detection device for a tool and the motion velocity confirmation device for a used tool according to the present invention to an NC machine tool.

FIG. 8 shows a second embodiment of a method for detecting an allowable motion speed of a tool and a method for confirming a motion speed corresponding to a tool to be used according to the present invention.
It is a general flowchart which shows the implementation point when applied to C machine tool.

FIG. 9 is a flowchart showing a tool identification routine in the case where the allowable tool motion velocity detection method and the tool compatible motion velocity confirmation method according to the present invention are applied to an NC machine tool.

FIG. 10 is a flowchart showing an asymmetric tool division routine in the case where the tool allowable motion speed detection method and tool used motion speed confirmation method according to the present invention are applied to an NC machine tool.

FIG. 11 is a flowchart showing an anti-rotation tool identification routine in the case where the allowable movement speed detection method for a tool and the movement speed confirmation method for a used tool according to the present invention are applied to an NC machine tool.

FIG. 12 is a flow chart showing a boring tool identification routine in the case where the allowable movement velocity detection method for a tool and the movement velocity confirmation method for a used tool according to the present invention are applied to an NC machine tool.

FIG. 13 is a flowchart showing a boring tool discrimination routine in the case where the allowable tool motion velocity detection method and the tool compatible motion velocity confirmation method according to the present invention are applied to an NC machine tool.

FIG. 14 is a flowchart showing a symmetric tool division routine in the case where the allowable tool motion velocity detection method and the tool compatible motion velocity confirmation method according to the present invention are applied to an NC machine tool.

FIG. 15 is a flow chart showing a class α discrimination routine in the case where the allowable motion velocity detection method for a tool and the motion velocity confirmation method for a used tool according to the present invention are applied to an NC machine tool.

FIG. 16 is a flowchart showing a class β identification routine in the case where the tool allowable movement speed detection method and the tool-use movement speed confirmation method according to the present invention are applied to an NC machine tool.

FIG. 17 is a flowchart showing a class γ discrimination routine in the case where the allowable movement velocity detection method for a tool and the movement velocity confirmation method for a used tool according to the present invention are applied to an NC machine tool.

FIG. 18 is a flow chart showing a class δ identification routine in the case where the tool allowable movement speed detection method and the tool used movement speed confirmation method according to the present invention are applied to an NC machine tool.

FIG. 19 is a side view of a blade portion of a boring tool.

FIG. 20 is a side view of a special boring tool.

FIG. 21 is a side view of the boring tool on the blade portion side.

FIG. 22 is a side view showing the entire boring tool.

FIG. 23 is a side view of the boring tool on the blade portion side.

FIG. 24 is a side view showing the entire symmetrical tool.

[Explanation of symbols]

 1 bed 3 column 5 saddle 7 tool 9 spindle 11 automatic tool changer 13 tool magazine 15 moving band 17 pot 19 tool change arm 21 dark box 31 CCD camera 33 light source 41 image conversion part 45 tool identification part 47 tool image database 49 tool match discrimination Part 51 NC program decoding part 53 Machining speed suitability judgment part 55 Allowable machining speed range database 57 Shape feature value extraction part 59 Tool feature value calculation part 61 Allowable machining speed acquisition part 63 Allowable machining speed range database

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Norio Hiyoshi 2068-3 Ooka, Numazu-shi, Shizuoka Toshiba Machine Co., Ltd. Numazu Business Office (72) Hirohiko Honda Honda 368-2038 Ooka, Numazu-shi, Shizuoka Toshiba Machine Co., Ltd. Numazu Business In-house (72) Inventor Kyoichi Tatsuno 1 Komukai Toshiba-cho, Kouki-ku, Kawasaki-shi, Kanagawa Stock Company Toshiba Research and Development Center

Claims (24)

[Claims] 1. A shape and size of a tool is detected by a detection means, a tool is specified from a detection result of the tool by the detection means, and a database in which an allowable motion velocity range unique to the tool is defined in advance is used, A method for detecting a permissible movement speed of a tool, characterized in that a permissible movement speed range corresponding to the specified tool is acquired from the database. 2. The shape and size of the tool are detected by a detecting means, the characteristic value of the shape and the size of the tool is calculated from the detection result of the tool by the detecting means, and the class is determined according to the characteristic value of the shape and the size of the tool. Using a database that predefines the allowable motion velocity range of the divided tools,
A method for detecting a permissible motion velocity of a tool, characterized in that a permissible motion velocity range of a class corresponding to the calculated feature values of the shape and dimensions of the tool is acquired from the database. 3. A method for confirming a motion speed of a tool to be used in a program-controlled machine that operates according to a motion command from a motion control program, wherein the shape and size of the tool to be used next is detected by a detection means, and the tool detected by the detection means A tool is specified from the detection results, and a database that predefines the allowable motion speed range unique to each tool is used, and the allowable motion speed range corresponding to the specified tool is acquired from the database, and the motion control program is stored in advance. A method for confirming a motion speed corresponding to a tool used in a program-controlled machine, characterized in that the judgment means judges whether or not the described motion speed is within an allowable motion speed range acquired from the database. 4. A method for confirming the motion speed of a tool to be used in a program-controlled machine that operates according to a motion command from a motion control program, wherein the shape and dimensions of the tool to be used next are detected by the detection means, and the tool detected by the detection means is used. The feature values of the tool shape and dimensions are calculated from the detection results, and the database that predefines the allowable motion velocity range of the tools classified according to the feature values of the tool shape and dimensions is used to calculate the calculated tool The allowable motion velocity range of the class corresponding to the characteristic value of the shape and the dimension is acquired from the database, and whether the motion velocity previously described in the motion control program is within the allowable motion velocity range acquired from the database is determined. A tool for use in a program-controlled machine characterized by being discriminated by a discriminating means. Corresponding movement speed verification method. 5. The database defines an allowable motion velocity range unique to each tool according to the tool type and the tool size, and the tool is identified from the detection result of the tool based on the tool type and the tool size. 4. The method for detecting an allowable motion speed of a tool according to claim 1, or the program-controlled machine according to claim 3, wherein the allowable motion speed range of the tool is searched and acquired from the database using the type and the tool size as a search key. How to check the tools used in the equipment. 6. The feature values of the shape and size of the tool include the total length of the tool, the maximum diameter, the area of the asymmetric portion, the weight, the ratio of the tool length to the diameter, the ratio of the blade length to the diameter, the asymmetry ratio, The constriction rate, the ratio of the weight to the minimum diameter are the method for detecting the allowable motion speed of the tool according to claim 2 or the method for confirming the tool used in the program-controlled machine according to claim 4. 7. The database defines an allowable motion velocity range for each material of the workpiece, and the allowable motion velocity range corresponding to the material of the workpiece described in advance in the motion control program is calculated from the database. The method for detecting an allowable motion speed of a tool according to claim 1 or a method for confirming a tool to be used in a program-controlled machine. 8. The method for detecting an allowable motion speed of a tool according to claim 1, wherein the detecting means includes an optical detecting means for optically detecting a shape of the tool. Method for checking tools used in program-controlled machines. 9. The optical detection means is an image pickup means,
9. The method for detecting an allowable motion speed of a tool or a tool used in a program-controlled machine device according to claim 8, wherein the tool is imaged by the imaging means, and the shape and size of the tool are detected from the tool image data obtained by the imaging. Confirmation method. 10. The image pickup position of the tool by the image pickup means is a standby position for tool change by the automatic tool changer of the program-controlled machine.
A method for detecting an allowable rotation speed of a tool described in or a method for checking a rotation speed corresponding to a tool used in a program-controlled machine. 11. The tool permissible rotation speed detection according to claim 9, wherein the image pickup position of the tool by the image pickup means is a tool gripping position by the tool change arm of the automatic tool changer of the program-controlled machine. Method or program-controlled rotating speed confirmation method for tools used in machinery. 12. The method for detecting an allowable rotational speed of a tool according to claim 9, wherein the image pickup position of the tool by the image pickup means is a tool mounting position with respect to the program-controlled machine device, or a tool used in the program-controlled machine device. Corresponding rotation speed confirmation method. 13. The allowable movement speed of the tool is a tool rotation speed, a tool feed speed, a tool movement speed, or a combination thereof.
A method for detecting an allowable movement speed of a tool according to any one of claims 1 to 3 or a method for checking a tool used in a program-controlled machine. 14. A detecting means for detecting the shape and size of the tool, a tool specifying means for specifying the tool based on the shape and size of the tool detected by the detecting means, and an allowable motion velocity range peculiar to the tool. A permissible motion of the tool, comprising: a predefined database; and a permissible motion velocity range acquisition unit that acquires from the database the permissible motion velocity range corresponding to the tool identified by the tool identification unit. Speed detection device. 15. A detection means for detecting the shape and size of the tool, a feature amount calculation means for calculating a feature quantity related to the shape and size of the tool from the shape and size of the tool detected by the detection means, and the shape of the tool. , A database pre-defining an allowable motion velocity range classified into classes according to the feature amount of dimensions, and an allowable motion velocity range of the class corresponding to the feature amount of the tool calculated by the feature amount calculating means are acquired from the database. And a permissible motion velocity range acquiring means for controlling the permissible motion velocity of the tool. 16. A motion velocity confirmation device for a tool to be used in a program-controlled mechanical device that operates according to a motion command from a motion control program, and detection means for detecting the shape and size of the tool to be used next; Tool specifying means for specifying the tool based on the shape and size of the tool, a database in which the allowable motion velocity range unique to the tool is defined in advance for each tool, the shape of the tool based on the shape and the size of the tool detected by the detecting means, A feature amount calculating means for calculating a feature amount related to dimensions, a database in which allowable motion velocity ranges classified according to the shape and dimension feature amounts of a tool are defined in advance, and a tool calculated by the feature amount calculating means Allowance to obtain the allowable motion velocity range of the class corresponding to the feature amount from the database A moving speed range acquiring means, an allowable moving speed range acquiring means for acquiring an allowable moving speed range corresponding to the tool specified by the tool specifying means from the database, and a moving speed described in advance in an operation control program is A motion speed confirmation device for a tool used in a program-controlled machine, comprising: a judgment means for judging whether or not the allowable motion speed range acquired from the database is within. 17. A motion speed confirmation device for tool use in a program-controlled machine that operates according to a motion command from a motion control program, and detection means for detecting the shape and size of the tool to be used next; Feature amount calculation means for calculating the feature amount related to the tool shape and dimensions from the tool shape and dimensions, and a database that predefines an allowable motion velocity range classified according to the feature amounts of the tool shape and dimensions, An allowable exercise speed range acquiring means for acquiring from the database an allowable exercise speed range of a class corresponding to the feature quantity of the tool calculated by the feature quantity calculating means; Determination means for determining whether or not the obtained allowable motion velocity range is within, A motion speed confirmation device for a tool to be used in a program-controlled machine, characterized by having. 18. The database defines an allowable motion velocity range according to a tool type and a tool size,
The tool specifying unit specifies a tool based on a tool type and a tool size, and searches and acquires an allowable motion speed range of the tool from the database using the tool type and the tool size specified by the tool specifying unit as a search key. An apparatus for detecting an allowable motion speed of a tool according to claim 14, or a tool confirmation apparatus for use in a program-controlled machine apparatus according to claim 16. 19. The calculation of the feature value of the shape and size of the tool by the feature amount calculating means is performed by calculating the total length of the tool, the maximum diameter, the area of the asymmetrical portion, the weight, the ratio of the length of the tool to the diameter, and the length of the blade. The ratio of diameter, asymmetry ratio, constriction ratio, and ratio of weight to minimum diameter are the allowable motion velocity detecting device for a tool according to claim 15 or the program-controlled machine device according to claim 17. Tool used confirmation device. 20. The database defines an allowable motion velocity range for each material of the workpiece, and the allowable motion velocity range acquisition means corresponds to the material of the workpiece described in advance in the operation control program program. 20. The allowable movement speed range of the tool according to claim 14, wherein the allowable movement speed range is acquired from the database. 21. The tool allowable motion speed detecting device according to claim 14, wherein the detecting means includes an optical detecting means for optically detecting the shape of the tool. Used tool confirmation device in program-controlled machinery. 22. The optical detection means is an imaging means, the tool is imaged by the imaging means, and the shape and size of the tool are detected from the tool image data obtained by the imaging. Permissible movement speed detection device for tool or tool confirmation device used in program-controlled machine. 23. An automatic tool exchanging device is provided, and a dark box is provided at a standby position for tool exchanging by the automatic tool exchanging device, and the image pickup means picks up an image of the tool in the dark box. 5. A tool check device for use in a tool allowable motion speed detecting device or a program-controlled mechanical device as described in. 24. The allowable movement speed of the tool is a tool rotation speed, a tool feed speed, a tool movement speed, or a combination thereof.
3. An allowable movement speed detection device for a tool according to any of 3 or a movement speed confirmation device for a tool used in a program-controlled machine.