CN112548678A - Cutter detection method and device of numerical control machining center - Google Patents
Cutter detection method and device of numerical control machining center Download PDFInfo
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- CN112548678A CN112548678A CN202011416881.7A CN202011416881A CN112548678A CN 112548678 A CN112548678 A CN 112548678A CN 202011416881 A CN202011416881 A CN 202011416881A CN 112548678 A CN112548678 A CN 112548678A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
- B23Q17/0957—Detection of tool breakage
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Abstract
The invention provides a method and a device for detecting a cutter of a numerical control machining center, which comprises the cutter and a machine tool, wherein the method comprises the following steps: acquiring parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter; comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise a cutter length difference value and a cutter diameter difference value; matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter; and processing according to the wear condition of the cutter. The method does not need to invest a large amount of funds, and can avoid serious property loss caused by machine collision of the machine tool spindle.
Description
Technical Field
The invention belongs to the field of numerical control machining, and particularly relates to a cutter detection method and device for a numerical control machining center.
Background
At present, regarding a detection method of cutter breakage and severe abrasion of a numerical control machine tool, methods of vision, machine tool installation of industrial hardware and the like are mainly relied on. Whichever method is used, a large cost is required.
In the field of numerical control machining, after a cutter is broken and heavily worn in the machining process, the cutter needing to be machined subsequently by the cutter is broken and heavily worn, and a machine tool spindle is collided to cause very serious property loss in serious conditions.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problems in the prior art, a cutter detection method capable of saving cost is provided.
In one aspect, the present invention provides a tool detection method for a numerical control machining center, including a tool and a machine tool, the method including:
acquiring parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter;
comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise a cutter length difference value and a cutter diameter difference value;
matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter;
and processing according to the wear condition of the cutter.
Further, the matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the tool specifically includes:
judging whether the cutter is severely worn or broken according to the comparison condition of the difference value and the standard difference value;
and if the cutter is detected to be not worn or broken, continuing machining.
Further, the determining whether the tool is heavily worn or broken according to the comparison between the difference value and the standard difference value specifically includes:
if the tool difference value is larger than the tool standard value, judging that the tool is severely worn or broken;
and if the tool difference value is smaller than the tool standard value, continuously comparing the tool difference value.
Further, if the tool difference value is greater than the tool standard value, determining that the tool is severely worn or broken specifically includes:
and if the diameter difference value of the cutter is larger than the diameter standard difference value of the cutter, judging that the cutter is broken.
Further, if the tool difference value is smaller than the tool standard value, the continuously comparing the tool difference value specifically includes:
if the diameter difference value of the cutter is smaller than the diameter standard difference value of the cutter, continuously comparing the length difference value of the cutter;
and if the length difference value of the cutter is greater than the upper tolerance of the cutter and less than the lower tolerance of the cutter, judging that the cutter is severely worn.
Further, if the tool difference value is greater than the tool standard value, determining that the tool is severely worn or broken further includes:
and if the length difference value of the cutter is greater than the lower tolerance of the cutter, judging that the cutter is broken.
Further, the processing according to the wear condition of the cutter specifically comprises:
and if the cutter is severely worn or broken, the machine tool gives a user-defined alarm to prompt the cutter wearing condition and stops working.
Further, the machine tool carries out custom alarm and comprises an alarm through a billboard and a buzzer.
Further, the matching and comparing the difference value with the standard value in the preset standard library further comprises:
and matching the standard value of the cutter in the preset standard library according to the diameter of the cutter.
In another aspect, the present invention further provides a tool detecting apparatus for a numerical control machining center, the apparatus including:
an acquisition device: the method comprises the steps of obtaining parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter;
a comparison device: the device is used for comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise cutter length difference values and diameter difference values;
the matching device comprises: the standard value is used for matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter;
a processing device: for processing according to the wear of the tool.
The invention provides a cutter detection method of a numerical control machining center, which comprises a cutter and a machine tool, and the method comprises the following steps: acquiring parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter; comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise a cutter length difference value and a cutter diameter difference value; matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter; and processing according to the wear condition of the cutter. The method does not need to invest a large amount of funds, and can avoid serious property loss caused by machine collision of the machine tool spindle.
Drawings
The detailed structure of the invention is described in detail below with reference to the accompanying drawings
FIG. 1 is a schematic flow chart of a tool detection method of a numerical control machining center according to the present invention;
FIG. 2 is a sub-flow diagram of the tool detecting method of the NC machining center according to the present invention;
FIG. 3 is a schematic view of another sub-flow of the tool detecting method of the NC machining center according to the present invention;
FIG. 4 is a schematic view of another sub-flow of the tool detecting method of the NC machining center according to the present invention;
FIG. 5 is a schematic diagram of a device for detecting a tool of a CNC machining center according to the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a tool detection method of a numerical control machining center according to an embodiment of the present application, where the present embodiment includes a tool and a machine tool, and the tool detection method of the numerical control machining center includes:
Before the tool runs in the machine tool, the length and the diameter of the tool before the running tool is machined are measured, and the number of the tool is recorded.
And 102, comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise a cutter length difference value and a cutter diameter difference value.
And after the cutter runs on the machine tool, measuring the length and the diameter of the cutter after running and the number of the cutter again.
And 103, matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter.
The method comprises the steps of calculating difference values of cutters with the same number before and after operation, recording the difference values, and comparing the difference values of the cutters with standard values in a preset standard library to obtain the specific abrasion condition of the cutters, wherein the difference values of the cutters are absolute values, and tolerance refers to the absolute value of the difference between the allowed maximum limit size and the minimum limit size or the difference between the allowed upper deviation and the allowed lower deviation. The dimensional tolerance is an absolute value without sign. The ultimate deviation is the ultimate dimension-the basic dimension, the upper deviation is the maximum ultimate dimension-the basic dimension, and the lower deviation is the minimum ultimate dimension-the basic dimension. Dimensional tolerance refers to the amount of variation in the dimensions of a part that is allowed during machining. In the case where the basic size is the same, the smaller the dimensional tolerance is, the higher the dimensional accuracy is.
And 104, processing according to the abrasion condition of the cutter.
Wherein, whether the cutter continues to operate is selected according to the abrasion condition of the cutter.
The embodiment of the application provides a cutter detection method of a numerical control machining center, which comprises a cutter and a machine tool, wherein the method comprises the following steps: acquiring parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter; comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise a cutter length difference value and a cutter diameter difference value; matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter; and processing according to the wear condition of the cutter. The method does not need to invest a large amount of funds, and can avoid serious property loss caused by machine collision of the machine tool spindle.
Specifically, based on the foregoing embodiment, referring to fig. 2, fig. 2 is a sub-flow schematic diagram of a tool detection method of a numerical control machining center in the embodiment of the present application, in this embodiment, matching and comparing the difference value with a standard value in a preset standard library to obtain a wear condition of the tool specifically includes:
and step 202, if the cutter is detected to be not worn or broken, continuing machining.
Wherein, the difference value that obtains before and after according to the cutter operation compares with the standard value of cutter to can obtain the wearing and tearing condition of cutter, thereby judge whether continue to operate.
Specifically, based on the foregoing embodiment, referring to fig. 3, fig. 3 is another sub-flow diagram of a tool detection method of a numerical control machining center in the embodiment of the present application, in this embodiment, judging whether the tool is heavily worn or broken according to a comparison between the difference value and the standard difference value specifically includes:
and 302, if the tool difference value is smaller than the tool standard value, continuously comparing the tool difference value.
And comparing the difference value of the cutter with the standard value, and judging whether the cutter continues to work or is compared again.
Specifically, in this embodiment of the application, if the tool difference value is greater than the tool standard value, determining that the tool is severely worn or broken specifically includes:
and if the diameter difference value of the cutter is larger than the diameter standard difference value of the cutter, judging that the cutter is broken.
And if the diameter difference value of the cutter is greater than the diameter standard difference value of the cutter, the cutter can be judged to be broken.
Specifically, based on the foregoing embodiment, referring to fig. 4, fig. 4 is another sub-flow diagram of a tool detection method of a numerical control machining center in the embodiment of the present application, in this embodiment, if the tool difference value is smaller than the tool standard value, the continuously comparing the tool difference value specifically includes:
The specific wear condition of the cutter cannot be well known only by comparing the diameter difference value of the cutter, if the diameter difference value of the cutter is smaller than the standard diameter difference value of the cutter, the length difference value of the cutter is compared, and if the length difference value of the cutter is between the upper tolerance and the lower tolerance of the cutter, the cutter can be judged to be severely worn.
Specifically, in this embodiment of the application, if the tool difference value is greater than the tool standard value, determining that the tool is severely worn or broken further includes:
and if the length difference value of the cutter is greater than the lower tolerance of the cutter, judging that the cutter is broken.
When the length difference value of the cutter is larger than the lower tolerance of the cutter, the cutter can be judged to be broken.
Specifically, in the embodiment of the present application, the processing according to the wear condition of the tool specifically includes:
and if the cutter is severely worn or broken, the machine tool gives a user-defined alarm to prompt the cutter wearing condition and stops working.
When the cutter is severely worn or broken, the machine tool still operates on the machine tool, the machine tool can be damaged, the main shaft of the machine tool can be collided to cause serious property loss in serious conditions, and therefore when the cutter is severely worn or broken, the machine tool can automatically give an alarm to prompt whether the cutter is severely worn or broken, prompt a user to replace the cutter, and alarm and simultaneously halt the operation of the machine tool.
Specifically, in the embodiment of the application, the machine tool performs custom alarm, including alarm through a billboard and a buzzer. In the embodiment of the present application, only two modes, namely, a billboard and a buzzer, are given for alarm indication, but the present application is not limited to only these two modes.
Specifically, in this embodiment of the application, the matching and comparing the difference value with the standard value in the preset standard library further includes:
and matching the standard value of the cutter in the preset standard library according to the diameter of the cutter.
The diameter of the cutter before operation is obtained firstly, and the standard value of the cutter during operation can be obtained in a preset standard library according to the diameter between operations, so that matching comparison can be performed in the subsequent steps.
In the embodiment of the application, the method comprises the following specific steps:
firstly, measuring the length and the diameter of the cutter before machining and recording the number of the cutter;
after the operation of the cutter is finished, measuring the length and the diameter of the machined cutter again and recording the serial number of the cutter;
comparing the difference values of the length and the diameter of the cutters with the same number;
matching an upper tolerance, a lower tolerance and a diameter difference value of the current cutter in a preset standard library according to the diameter of the cutter;
comparing the diameter difference values of the cutters, if the diameter difference value of the cutters is larger than the diameter difference value in the standard library, considering that the cutters are broken, triggering a machine tool to self-define alarm, and prompting that the cutters are broken to enable the machine tool to pause; if the diameter difference value of the cutter is smaller than that in the standard library, the length of the cutter is continuously compared, if the length difference value of the cutter is smaller than the lower tolerance and larger than the upper tolerance, the severe abrasion of the cutter is judged, the machine tool self-defined alarm is triggered, the severe abrasion of the cutter is prompted, and the machine tool is made to pause; if the length difference value of the cutter is larger than the lower tolerance of the cutter, the cutter is considered to be broken, a machine tool self-defined alarm is triggered, the cutter is prompted to be broken, and the machine tool is made to pause; and if the breakage or the heavy abrasion of the cutter is not detected, the machining is continued.
Specifically, an embodiment of the present invention further provides a device 200 for detecting a tool of a numerical control machining center, referring to fig. 5, where fig. 5 is a schematic device diagram of the device for detecting a tool of a numerical control machining center in an embodiment of the present invention, in this embodiment, the device 200 for detecting a tool of a numerical control machining center includes:
the acquisition means 501: the method comprises the steps of obtaining parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter;
the comparison device 502: the device is used for comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise cutter length difference values and diameter difference values;
the matching means 503: the standard value is used for matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter;
the processing device 504: for processing according to the wear of the tool.
The cutter detection device 200 of the numerical control machining center provided by the embodiment of the application can realize that: acquiring parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter; comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise a cutter length difference value and a cutter diameter difference value; matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter; and processing according to the wear condition of the cutter. The method does not need to invest a large amount of funds, and can avoid serious property loss caused by machine collision of the machine tool spindle.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no acts or modules are necessarily required of the invention.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In view of the above description of the method and apparatus for detecting a tool in a cnc machining center provided by the present invention, those skilled in the art will appreciate that there are variations in the embodiments and applications according to the concepts of the present application, and in summary, the present disclosure should not be construed as limiting the present invention.
Claims (10)
1. A tool detection method of a numerical control machining center is characterized by comprising a tool and a machine tool, and the method comprises the following steps:
acquiring parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter;
comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise a cutter length difference value and a cutter diameter difference value;
matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter;
and processing according to the wear condition of the cutter.
2. The method of claim 1, wherein the matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the tool specifically comprises:
judging whether the cutter is severely worn or broken according to the comparison condition of the difference value and the standard difference value;
and if the cutter is detected to be not worn or broken, continuing machining.
3. The method of claim 2, wherein said determining whether the tool is heavily worn or broken based on the comparison of the difference value and the standard difference value comprises:
if the tool difference value is larger than the tool standard value, judging that the tool is severely worn or broken;
and if the tool difference value is smaller than the tool standard value, continuously comparing the tool difference value.
4. The method of claim 3, wherein if the tool differential value is greater than the tool standard value, determining that the tool is heavily worn or broken specifically comprises:
and if the diameter difference value of the cutter is larger than the diameter standard difference value of the cutter, judging that the cutter is broken.
5. The method of claim 3, wherein if the tool variance is less than the tool criterion value, the continuing to compare the tool variance specifically comprises:
if the diameter difference value of the cutter is smaller than the diameter standard difference value of the cutter, continuously comparing the length difference value of the cutter;
and if the length difference value of the cutter is greater than the upper tolerance of the cutter and less than the lower tolerance of the cutter, judging that the cutter is severely worn.
6. The method of claim 3, wherein said determining that said tool is heavily worn or broken if said tool-differential value is greater than said tool-standard value further comprises:
and if the length difference value of the cutter is greater than the lower tolerance of the cutter, judging that the cutter is broken.
7. The method of claim 3, wherein processing based on wear of the tool specifically comprises:
and if the cutter is severely worn or broken, the machine tool gives a user-defined alarm to prompt the cutter wearing condition and stops working.
8. The method of claim 7, wherein the machine tool custom alerting comprises alerting with a billboard, a buzzer.
9. The method of claim 1, wherein matching the difference value with a standard value in a predetermined standard library further comprises:
and matching the standard value of the cutter in the preset standard library according to the diameter of the cutter.
10. A tool detecting device for a numerical control machining center, the device comprising:
an acquisition device: the method comprises the steps of obtaining parameters before and after the cutter is machined, wherein the parameters comprise the length, the diameter and the number of the cutter;
a comparison device: the device is used for comparing and recording difference values before and after the cutter parameter processing, wherein the difference values comprise cutter length difference values and diameter difference values;
the matching device comprises: the standard value is used for matching and comparing the difference value with a standard value in a preset standard library to obtain the wear condition of the cutter, wherein the standard value comprises an upper tolerance, a lower tolerance and a standard difference value of the diameter of the cutter;
a processing device: for processing according to the wear of the tool.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113172478A (en) * | 2021-04-21 | 2021-07-27 | 昆山歌尔电子有限公司 | Automatic cutter detection method |
| CN114714149A (en) * | 2022-04-07 | 2022-07-08 | 西门子（中国）有限公司 | Method for automatically detecting tool setting of machine tool and tool setting detection device |
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| CN105479269A (en) * | 2015-12-28 | 2016-04-13 | 东莞市巨冈机械工业有限公司 | Tool wear monitoring method and device of numerical control machine tool |
| CN109623485A (en) * | 2019-01-24 | 2019-04-16 | 江门市奥斯龙机械有限公司 | A kind of cutting tool for CNC machine length compensation system and method |
| CN109877649A (en) * | 2019-03-12 | 2019-06-14 | 苏州乐模软件科技有限公司 | Automate cutter online test method and detection system |
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| JP2003170301A (en) * | 2001-12-03 | 2003-06-17 | Mitsubishi Heavy Ind Ltd | End face machining device of pipe, and its method |
| CN105479269A (en) * | 2015-12-28 | 2016-04-13 | 东莞市巨冈机械工业有限公司 | Tool wear monitoring method and device of numerical control machine tool |
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Application publication date: 20210326 |