CN117773208A - Precision compensation method, device, equipment and medium for five-axis linkage double-pendulum milling head - Google Patents

Precision compensation method, device, equipment and medium for five-axis linkage double-pendulum milling head Download PDF

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CN117773208A
CN117773208A CN202410211401.5A CN202410211401A CN117773208A CN 117773208 A CN117773208 A CN 117773208A CN 202410211401 A CN202410211401 A CN 202410211401A CN 117773208 A CN117773208 A CN 117773208A
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gasket
height value
polishing
value set
height
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CN117773208B (en
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邵传伟
王凯
王赫群
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Iberg Zhejiang Machinery Co ltd
Langfang Ibege Machinery Co ltd
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Iberg Zhejiang Machinery Co ltd
Langfang Ibege Machinery Co ltd
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Abstract

The invention discloses a precision compensation method, a device, equipment and a medium of a five-axis linkage double-pendulum milling head, belonging to the technical field of numerical control equipment, wherein the precision compensation method comprises the following steps: continuously acquiring the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer to form a gasket height value set of the current gasket layer, and extracting the maximum height value mark in the height value set as a reference height value; obtaining a correction range according to the reference height value and a preset error range, and screening each height value in the correction range in the height value set to obtain a target height value set; and obtaining a gasket corresponding to each height value in the target height value set, and polishing the gasket to compensate the precision of the five-axis linkage double-pendulum milling head. The method can select the gasket to be polished in a targeted manner without polishing the end face of the main shaft after the main shaft is disassembled, and the time for precision compensation is saved on the premise of considering the precision of the five-axis linkage double-pendulum milling head.

Description

Precision compensation method, device, equipment and medium for five-axis linkage double-pendulum milling head
Technical Field
The disclosure relates generally to the technical field of numerical control machine tools, and in particular relates to a precision compensation method, device, equipment and medium for a five-axis linkage double-pendulum milling head.
Background
At present, the complexity of products in the manufacturing industry in China is higher and higher, and particularly, products in the fields of aerospace, military industry and the like need to process complex curved surfaces, and a machine tool is required to be provided with more than five machine tool linkage comprising two rotating shafts. The traditional numerical control machine tool can not realize omnibearing multi-angle cutting processing on complex curved surfaces. At present, a five-axis linkage double-pendulum milling head is often adopted in the omnibearing multi-angle machining process of a complex curved surface.
The end face of the main shaft in the five-axis linkage double-pendulum milling head is contacted with the end face of the main frame of the pendulum head. In the long-term use process, irregular abrasion is easy to occur on the end face of the main shaft, so that the phenomenon that the end face of the main shaft is unstable occurs, and further the machining precision of the milling head is reduced.
The existing precision correction method is that after the whole main shaft is disassembled, the end face of the main shaft connected with the end face of the swing head main frame is polished and leveled. According to the precision correction method, the main shaft is required to be integrally disassembled, the operation process is complex, the end face of the main shaft is required to be comprehensively polished, the time is long, the production rhythm is influenced, and the use experience of a user is reduced. Therefore, we propose a precision compensation method of five-axis linkage double-pendulum milling head.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide an efficient and convenient precision compensation method, apparatus, device and medium for a five-axis linkage double pendulum milling head.
In a first aspect, the present invention provides a precision compensation method for a five-axis linkage double-pendulum milling head, including:
the five-axis linkage double-pendulum milling head comprises: the main frame of swaing, the one end of main frame of swaing is connected with the main shaft, be equipped with the gasket layer on the main shaft matched with terminal surface of main frame of swaing, the gasket layer includes: the plurality of gaskets encircle the axis of main shaft is followed the terminal surface circumference distribution of oscillating body frame, the precision compensation method includes:
continuously acquiring the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer to form a gasket height value set corresponding to the current gasket layer;
traversing each height value in the height value set, and extracting the maximum height value mark in the height value set as a reference height value;
obtaining a correction range according to the reference height value and a preset error range;
according to the correction range, screening each height value in the height value set in the correction range to obtain a target height value set;
And according to the obtained target height value set, obtaining a gasket corresponding to each height value in the target height value set, and polishing the gasket to compensate the precision of the five-axis linkage double-pendulum milling head.
According to the technical scheme provided by the invention, after the gaskets corresponding to the height values in the target height value set are obtained according to the obtained target height value set, the method further comprises the following steps:
deleting the height values which are smaller than or equal to the preset polishing value in the height value set to obtain a polishing correction height value set;
calculating to obtain a polishing value according to the average value of the reference height value and the height value in the polishing correction height value set;
and polishing the gasket to be polished according to the polishing value, and recording the height value and correction date of the polished gasket to form a group of polishing records.
According to the technical scheme provided by the invention, the method for continuously obtaining the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer, after forming the gasket height value set corresponding to the current gasket layer, further comprises:
Obtaining a gasket corresponding to a height value smaller than or equal to a preset polishing value;
checking the height of the gasket, and acquiring a plurality of height values along the circumferential direction of the gasket;
and when the height value corresponding to the gasket is judged to be continuously smaller than or equal to the preset polishing value, replacing the gasket according to the number of the gasket.
According to the technical scheme provided by the invention, the polishing of the gasket to be polished is performed by polishing values, and the polishing method specifically comprises the following steps:
acquiring first image information of the gasket to be polished, wherein the first image information is used for reflecting the surface flatness of the gasket;
dividing a region to be polished on the surface of the gasket according to the first image information;
and polishing the region to be polished according to the polishing value.
According to the technical scheme provided by the invention, after the polishing to the region to be polished is performed with the polishing value, the polishing method further comprises the following steps:
placing the polished gasket back to the gasket layer;
continuously acquiring the height value of the gasket layer again along the circumferential direction of the gasket layer to form a gasket height rechecking value set corresponding to the current gasket layer;
and judging that the difference between any two height values in the gasket height rechecking value set meets the correction error range, confirming that the gasket to be polished is corrected, and defining the service date of the gasket as the correction date.
According to the technical scheme provided by the invention, the precision compensation method further comprises the following steps:
constructing a gasket management database, the gasket management database comprising: the number of each gasket, the initial height value and the polishing record data set under different numbers; the sanding record data set includes: a plurality of groups of polishing records;
according to the data in the gasket management database, loss parameters corresponding to gaskets with different numbers are calculated.
According to the technical scheme provided by the invention, according to the data in the gasket management database, loss parameters of gaskets corresponding to different numbers are calculated, and the method specifically comprises the following steps:
continuously acquiring a plurality of groups of polishing records under the gaskets with the same number;
drawing a loss curve corresponding to the gasket according to a plurality of groups of polishing records and the initial height value under the numbered gasket;
filtering out singular points in the loss curve to obtain a standard loss curve;
and obtaining the loss parameters of the gaskets with corresponding numbers according to the standard loss curve.
In a second aspect, the present invention provides an accuracy compensating device for a five-axis linkage double-pendulum milling head, the five-axis linkage double-pendulum milling head comprising: the main frame of swaing, the one end of main frame of swaing is connected with the main shaft, be equipped with the gasket layer on the main shaft matched with terminal surface of main frame of swaing, the gasket layer includes: the gasket encircles the axis of main shaft is followed the terminal surface circumference distribution of oscillating body frame, precision compensation device includes:
The height value acquisition module is configured to continuously acquire the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer to form a gasket height value set corresponding to the current gasket layer;
the reference height value calculation module is configured to traverse each height value in the height value set and extract the maximum height value mark in the height value set as a reference height value;
the correction range calculation module is configured to obtain a correction range according to the reference height value and the preset error range;
the target height value set acquisition module is configured to screen each height value in the height value set in the correction range according to the correction range to obtain a target height value set;
the gasket acquisition module is configured to acquire gaskets corresponding to all the height values in the target height value set according to the obtained target height value set, and polish the gaskets to compensate the precision of the five-axis linkage double-pendulum milling head.
In a third aspect, the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements the steps of the precision compensation method of the five-axis linkage double pendulum milling head described above when executing the computer program.
In a fourth aspect, the present invention provides a computer readable storage medium having a computer program, where the computer program when executed by a processor implements the steps of the method for compensating precision of a five-axis linkage double pendulum milling head described above.
In summary, the technical scheme particularly discloses a precision compensation method, a device, equipment and a medium of a five-axis linkage double-pendulum milling head; the precision compensation method comprises the following steps: continuously acquiring the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer to form a gasket height value set corresponding to the current gasket layer; traversing each height value in the height value set, and extracting the maximum height value mark in the height value set as a reference height value; obtaining a correction range according to the reference height value and a preset error range; according to the correction range, screening each height value in the height value set in the correction range to obtain a target height value set; and according to the obtained target height value set, obtaining a gasket corresponding to each height value in the target height value set, and polishing the gasket to compensate the precision of the five-axis linkage double-pendulum milling head.
The five-axis linkage double-pendulum milling head aims at the problem that irregular abrasion is easy to occur on the end face of a main shaft in the long-term use process of the existing five-axis linkage double-pendulum milling head, so that the phenomenon that the end face of the main shaft is unstable occurs, and further the milling head machining precision is reduced. Then the existing precision correction method is that the end face of the main shaft connected with the end face of the swing head main frame is polished and leveled after the main shaft is integrally disassembled. Compared with the prior art, the method has the advantages that the operation process is simple, and the problems of longer required length, influence on production rhythm, reduction of user experience and the like caused by comprehensively polishing the end face of the main shaft are avoided.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 is a flow chart of a precision compensation method of a five-axis linkage double-pendulum milling head.
Fig. 2 is a schematic structural diagram of a five-axis linkage double pendulum milling head.
Fig. 3 is a schematic diagram of a shim layer in a five-axis linkage double pendulum cutter head.
Fig. 4 is a schematic structural diagram of a precision compensation device of a five-axis linkage double-pendulum milling head.
Fig. 5 is a schematic block diagram of a terminal device.
Reference numerals in the drawings: 100. a main shaft; 200. a gasket; 500. a terminal device; 501. a CPU; 502. a ROM; 503. a RAM; 504. a bus; 505. an I/O interface; 506. an input section; 507. an output section; 508. a storage section; 509. a communication section; 510. a driver; 511. a removable medium; 600. a precision compensation device; 601. the height value acquisition module; 6011. a height value judging unit; 602. a reference height numerical value calculation module; 603. a correction range calculation module; 604. the target height value set acquisition module; 605. a gasket acquisition module; 606. a polishing numerical value calculation module; 607. a gasket polishing module; 608. and a gasket management module.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
First, the structure of the five-axis linkage double pendulum milling head will be briefly described with reference to fig. 2.
In order to solve the problems that the existing main shaft 100 is unstable in end face and affects the precision of the five-axis linkage double-pendulum milling head due to irregular abrasion, the main shaft 100 is often detached integrally, the main shaft end face is polished and leveled, but the operation is long in time consumption and affects the production rhythm.
Next, as shown in fig. 3, the gasket layer includes: the gaskets 200 are circumferentially distributed around the axis of the spindle 100 along the end face of the swing main frame, wherein it is noted that a plurality of connecting holes with different shapes are formed in each gasket 200, and the connecting holes are formed in advance according to the position of the swing main frame and the spindle 100 to be matched for use, so that the normal operation of the five-axis linkage double-pendulum milling head is not affected under the condition of adding a gasket layer.
However, even if the shim layer is designed to offset the abrasion of the end face of the spindle, the abrasion of the shim layer also affects the operation precision of the five-axis linkage double-pendulum milling head due to the long-time operation of the five-axis linkage double-pendulum milling head, under this scenario, please refer to the flow diagram of the precision compensation method of the five-axis linkage double-pendulum milling head provided in the embodiment shown in fig. 1, in order to ensure the precision of the five-axis linkage double-pendulum milling head, the precision compensation method specifically includes the following steps:
s100: continuously acquiring the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer to form a gasket height value set corresponding to the current gasket layer; here, the first direction is a vertical direction, and the corresponding height value can be measured by a digital display meter;
in the actual measurement process, in order to improve accurate control over the height of the spacer 200, some data may be collected more appropriately, and it is generally ensured that the set of values of the height of the spacer formed includes about 30 values, which is not particularly limited herein.
S200: traversing each height value in the height value set, and extracting the maximum height value mark in the height value set as a reference height value;
Because the five-axis linkage double-pendulum milling head has a complex working scene, the abrasion suffered by each gasket 200 is inconsistent, and the numerical values in the gasket height numerical value sets are different, so that the largest height numerical value in the height numerical value sets is marked as a reference height numerical value for giving a reference of the height numerical value to be polished, and the gasket 200 needing to be polished can be better confirmed.
S300: obtaining a correction range according to the reference height value and a preset error range;
since the reference height value is only one value, but a plurality of height values close to the reference height value are found in the practical application scene, a correction range can be formed by selecting a preset error range, for example, the reference height value is 0.8cm, the preset error range is 0-0.05cm, and then 0.8cm-0.75cm is the correction range, and the specific preset error range can be freely set by a technician.
S400: according to the correction range, screening each height value in the height value set in the correction range to obtain a target height value set;
Then, after the correction range is determined, all the height values in the correction range can be selected from the height value set, namely, the target height value set, which is used for confirming the height value of the pad 200 to be polished.
S500: and according to the obtained target height value set, obtaining a gasket corresponding to each height value in the target height value set, and polishing the gasket to compensate the precision of the five-axis linkage double-pendulum milling head.
Specifically, in this case, the pad to be polished can be determined according to the height values in the target height value set, then in the actual operation, the number of the height values is taken as 32 as an example, then corresponding to the pad layer shown in fig. 3, 4 points can be randomly obtained on each pad by using the digital display table, at this time, the pad 200 to be polished can be obtained initially, and of course, if the difference between the height values is not large in the measurement process, it is possible to try to measure several more groups of height values for improving the polishing accuracy of the pad, and in addition, the digital display table can record the collection positions according to the rotation angle of the digital display table, so that it can be determined from the measured data of the digital display table which of the pad 200 the height values are.
It should be noted that polishing the shims 200 is more in consideration of not only cost, but also time and labor for measuring the connecting holes and the specific connecting holes, etc. because each shim 200 needs to be provided with a suitable connecting hole, and only the shims 200 to be polished need to be polished, because the shims 200 are not directly replaced with the current shims, but are divided into a plurality of shims 200, and the shims 200 to be polished need to be polished.
And after the gasket to be polished is obtained, the numerical value to be polished is confirmed to be done next.
So in step S500: according to the obtained target height value set, after obtaining the gaskets corresponding to the height values in the target height value set, the method further comprises the following steps:
deleting the height values which are smaller than or equal to the preset polishing value in the height value set to obtain a polishing correction height value set; the preset polishing values are actually aimed at that if some positions of a certain pad are worn seriously, and when the degree of the pad needs to be replaced is reached, the height values of the positions are pulled down to obtain the final polishing values, so that the polishing values need to be deleted when the polishing values are calculated, the preset polishing values are set in real time according to the thickness of the pad which can be accommodated between the end face of the main shaft and the end face of the swing head main frame, if the thickness of the pad 200 is too small, the pad 200 can fall due to the too small thickness in the operation process of the five-axis linkage double-swing milling head, and the specific preset polishing values can be selected by technicians according to actual conditions without special limitation.
Calculating to obtain a polishing value according to the average value of the reference height value and the height value in the polishing correction height value set; specifically, the grinding correction height value set is { a }, for example 1 a 2 a 3 a 4 a 5 ...a n };
Then, based on the polishing correction height value set, the polishing value can be calculated according to the following formula (one):
A=H-the method comprises the steps of carrying out a first treatment on the surface of the Formula 1
Wherein A is represented as a sanding value; h is expressed as a reference height value; a, a i Expressed as a height value; n is a constant and is expressed as the number of height values in the grinding correction height value set; i is a constant.
And calculating to obtain a polishing value, namely polishing the gasket to be polished according to the calculated polishing value, and simultaneously recording the height value and the correction date of the polished gasket to form a group of polishing records.
In combination with the foregoing "if the thickness of the pad is too small, the pad falls down due to the too small thickness during the operation of the five-axis linkage double pendulum milling head", it is known that the pad 200 also has a life and needs to be replaced, so in step S100: continuously acquiring the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer, and after forming a gasket height value set corresponding to the current gasket layer, further comprising the following steps:
Step one, obtaining a gasket corresponding to a height value smaller than or equal to a preset polishing value;
when the current wear level of the gasket 200 is found to reach the place where replacement is required, the corresponding gasket needs to be locked by the collected height value.
Step two, checking the height of the gasket, and acquiring a plurality of height values along the circumferential direction of the gasket;
in order to prevent the problem of the measuring instrument, the height of the spacer 200 to be replaced may be checked again when the spacer 200 to be replaced is obtained, or the spacer 200 in the state of being replaced is in a relatively obvious abrasion state (loose state), so that whether the spacer needs to be replaced can be checked by observation of a technician.
And thirdly, when the height value corresponding to the gasket is judged to be continuously smaller than or equal to the preset polishing value, replacing the gasket according to the number of the gasket.
When the height value of the shim 200 is found to be continuously smaller than or equal to the preset polishing value after rechecking, the shim 200 is confirmed to be required to be replaced, because a batch of identical parts are sometimes processed in the working process of the five-axis linkage double-pendulum milling head, the abrasion positions of the shim 200 are also regular in the whole precision compensation process, if only one position of the shim is found to be smaller than or equal to the preset polishing value threshold value, the shim 200 can be replaced by the way of transposition with other shims 200, the use value of the shim 200 can be greatly improved, but the method is also only suitable for being used between two shims 200 with identical connecting hole opening positions, and if the shim 200 meeting the condition is not provided, the shim can be directly replaced when the height value corresponding to the shim is judged to be smaller than or equal to the preset polishing value.
Since the aforementioned connection holes formed in each of the shims 200 are fixed, the mounting position of each shim is also fixed, and each shim 200 is numbered for managing the shim layers, which also facilitates direct replacement of an adapted shim 200 when a shim 200 needs replacement.
Specifically, when the polishing step is performed, the pad 200 needs to be polished according to the calculated polishing value after being removed, and then the polishing process can be performed by using the existing polisher during polishing.
In the invention, the polishing of the pad to be polished is performed with a polishing value, and specifically comprises the following steps:
step one, acquiring first image information of a gasket to be polished, wherein the first image information is used for reflecting the surface flatness of the gasket;
the first image information may be an image after three-dimensional laser scanning, and the flatness of the surface of the corresponding pad may be obtained through a characteristic curve of the image information on the surface profile of the pad 200.
Dividing a region to be polished on the surface of the gasket according to the first image information;
when the first image is obtained, the area to be polished can be divided on the surface of the pad 200 according to the first image information, and the height value of the area to be polished in the first direction is higher, so that the feedback signals obtained after scanning by the three-dimensional laser are different, and the area to be polished on the surface of the corresponding pad 200 can be conveniently detected.
Step three, polishing the region to be polished according to the polishing value; after the polishing areas are divided, the corresponding positions are polished through a polisher.
It should be noted that, in the present invention, a case is also included in which if the height value appearing in the target height value set is located at the junction between two adjacent shims 200, then the two related shims 200 need to be taken out entirely, and then the shims 200 that need to be polished specifically are further determined.
Specifically, when further judging the specific pad 200 to be polished, generally, the two pads 200 are sequentially taken out, the heights of the two pads 200 along the first direction are measured by using the measuring element, and whether the two pads 200 need to be polished or only one of the two pads 200 needs to be polished is specifically judged according to the measured height value. In the practical application process, when a technician finds that uneven wear often occurs at the junction of two gaskets 200, the installation position of the next gasket 200 is correspondingly adjusted, so that the division of a plurality of gaskets 200 in the gasket layer can be adjusted according to the situation, the time for searching for the gaskets to be polished can be further improved, generally after the gasket is observed for many times, how to position each gasket 200 in the gasket layer is determined to be concentrated on one gasket 200 as much as possible, and the wear cannot occur at the junction position of two gaskets 200.
In addition, in order to accelerate the acquisition of the shims 200 to be polished, when the five-axis linkage double-pendulum milling head is faced to process the parts in the same batch, a shim wear positioning library corresponding to the parts in the batch is formed by the wear position of the shims 200 in the earlier stage, so as to assist in rapidly positioning the shims 200 to be polished.
Specifically, it is first necessary to build a pad wear positioning library including: part batch to be processed, a plurality of groups of correction ranges corresponding to the same part batch, and polishing record data groups of gaskets with different numbers in the gasket layer; the interval polishing duration may be calculated according to a polishing record data set during the wear process of the pre-spacer 200.
When the correction range formed by the current height value and the preset error range is consistent with the correction range in the gasket abrasion positioning library, calling the gasket abrasion positioning library according to the correction range to obtain polishing record data sets of gaskets with different numbers in the gasket layer;
according to the data in the polishing record data set of the gaskets with different numbers in the gasket layer, the gaskets 200 needing polishing can be preliminarily confirmed, and the abrasion consistency of the gasket layer is very high in the face of processing parts in the same batch, so that a plurality of complicated steps can be saved by taking the collection of the earlier-stage data as a reference and a guide.
Meanwhile, in combination with fig. 3, it can be seen that, besides the running-in of the gasket layer by the device in the running process of the five-axis linkage double-pendulum milling head, the two adjacent gaskets can also be worn out by collision friction, especially, the junction where the connecting holes are formed by the two adjacent gaskets together (the edges of the gaskets needing to form the connecting holes correspondingly have sharp edges instead of smooth edges), so that according to the statistics of the data of the gasket wear positioning library, a regular observation rule can be formed, for example, the gasket layer formed by a plurality of F-model gaskets can be obtained when the gasket 200 needs to be checked (mainly according to the time length undergone by the adjacent correction date as a reference) through the recorded polishing record data set and other information of the gasket layer.
For the occurrence of the above phenomenon, since the "junction between two adjacent gaskets forming the connecting hole" is located at the inner periphery of the gasket layer, the junction between two adjacent gaskets forming the connecting hole may be monitored separately, because these places are easily ignored in the step of continuously obtaining the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer.
It should be noted that, whether the polished pad is qualified or not needs to be confirmed again, so after polishing the region to be polished with the initial polishing value in the third step, the method further includes the following steps:
placing the polished gasket back to the gasket layer;
continuously acquiring the height value of the gasket layer again along the circumferential direction of the gasket layer to form a gasket height rechecking value set corresponding to the current gasket layer;
the polishing pad is required to be polished as once as possible, so that the height value of the pad needs to be rechecked again after the pad is finished.
And judging that the difference between any two height values in the gasket height rechecking value set meets the correction error range, confirming that the gasket to be polished is corrected, and defining the use date as a correction date, namely, the correction date is the date for confirming that the gasket is qualified for correction, wherein the purpose is to calculate the duration of the gasket 200 from the end of polishing to the next time when the gasket is required to be polished.
Considering that the loss of the pad 200 may guide the selection of the performance of the subsequent pad and the division of the mounting positions of the pads of the subsequent corresponding pad layer, after polishing the pad to be polished with the polishing value, and recording the correction height value and the current correction date of the pad 200 to be polished, the method further includes:
Constructing a gasket management database, the gasket management database comprising: the number of each gasket, the initial height value and the polishing record data set under different numbers; the sanding record data set includes: a plurality of groups of polishing records;
specifically, the gasket management database has the following structure:
table 1 example gasket management database structure
Wherein x, x 1 -x 6 、y 1 -y 6 、z 1 -z 4 、m 1 -m 4 Are shown as numbers and the above description of the sanding records 1-3 is also exemplary, with specific data being based on actual sanding records.
The gasket management database is established because the monitoring of the performance of the gasket 200 is also used for guiding the division of the gasket 200 in the gasket layer and the key of the gasket selection; in particular, for example, when we find that a localized area of a certain shim 200 often requires sanding, that area can be designed as a single shim 200, and the polishing can be focused on this shim 200, although this is also merely for adjustment when machining a batch of parts.
According to the data in the shim management database, the loss parameters of shims corresponding to different numbers are calculated, wherein the shim loss parameters are parameters representing the service life of the shims, and because the use of the shims 200 can greatly reduce the disassembly of the spindle 100, the machining efficiency of the five-axis linkage double pendulum milling head can be affected if the shims 200 need to be frequently polished, and therefore, when a technician finds that the shims at a certain position need to be frequently polished, the material of the shims 200 can be properly adjusted.
Specifically, in order to quantify the refractory performance of the gasket 200, the performance of the gasket 200 is more intuitively obtained, the steps described above: according to the data in the gasket management database, the loss parameters of gaskets corresponding to different numbers are calculated, and the method specifically comprises the following steps:
continuously acquiring a plurality of groups of polishing records under the gaskets with the same number;
the performance test of the gasket 200 may be generally selected when the gasket 200 is confirmed to be replaced, or when the technician considers that the current performance of the gasket is insufficient to support the machining of the batch of parts, such as when complex machining is performed, the consumption of the gasket is found to be very fast or the number of grinding times is relatively frequent.
Drawing a loss curve corresponding to the gasket 200 according to a plurality of groups of polishing records and the initial height values under the numbered gaskets; specifically, the abscissa of the damage curve is the date and the ordinate is the altitude value.
Filtering out singular points in the loss curve to obtain a standard loss curve; generally, a standard loss curve for current data can be obtained by filtering using least square fitting.
And obtaining the loss parameters of the gaskets with corresponding numbers according to the standard loss curve, and obtaining the damage parameters of the gaskets with corresponding numbers according to the slope of the standard loss curve after confirming the standard loss curve.
In summary, according to the present invention, on one hand, the shim layer is added to the end surface of the swing head main frame of the existing five-axis linkage double-swing milling head, which is matched with the main shaft 100, so that the end surface of the main shaft 100 is effectively prevented from being irregularly worn by the shim layer, and the shim layer is composed of a plurality of shims 200, so that the wear degree of each shim 200 can be more easily observed, the subsequent differentiated design of shims 200 is also facilitated, and the use value of the shim layer is improved; according to the precision compensation method disclosed by the invention, a systematic method is provided for polishing and management of the gasket layer, the gaskets 200 in the gasket layer are ensured to be obtained based on objective calculation instead of blind polishing, and meanwhile, according to different height values of the gaskets 200, a certain gasket 200 can be replaced at any time, so that the five-axis linkage double-pendulum milling head is not easy to shake in the working process, and the machining precision of the five-axis linkage double-pendulum milling head is further improved; in the third aspect, the performance of the gasket 200 is also monitored to improve the durability of the gasket 200, and meanwhile, parameters such as the abrasion position, the service life and the like of the gasket 200 are counted to be important references for selecting the gasket materials and how the gasket layers are divided and arranged the gasket 200, so that the waste of manpower and material resources is further saved, and the efficiency of the whole precision compensation is improved.
Example 2
As shown in fig. 4, this embodiment provides a precision compensation device for a five-axis linkage double-pendulum milling head, to which the precision compensation method for a five-axis linkage double-pendulum milling head shown in embodiment 1 is applied, where the precision compensation device 600 includes:
the height value acquisition module 601 is configured to continuously acquire a height value of the gasket layer along a first direction along the circumferential direction of the gasket layer, so as to form a gasket height value set corresponding to the current gasket layer;
the height value acquisition module 601 further includes a height value determination unit 6011, where the height value determination unit 6011 is configured to compare the height value with a preset polishing value threshold.
A reference altitude value calculation module 602, where the reference altitude value calculation module 602 is configured to traverse each altitude value in the altitude value set, and extract a maximum altitude value in the altitude value set as a reference altitude value;
a correction range calculation module 603, where the correction range calculation module 603 is configured to obtain a correction range according to the reference height value and a preset error range;
a target altitude value set obtaining module 604, where the target altitude value set obtaining module 604 is configured to screen each altitude value in the altitude value set within the correction range according to the correction range, to obtain a target altitude value set;
The pad acquisition module 605 is configured to acquire a pad corresponding to each height value in the target height value set according to the obtained target height value set, and polish the pad to compensate the precision of the five-axis linkage double-pendulum milling head.
In addition, the precision compensation device 600 further includes: the polishing numerical value calculation module 606, the gasket polishing module 607 and the gasket management module 608, wherein the polishing numerical value calculation module 606 is used for calculating a polishing numerical value according to the average value of the reference height numerical value and the height numerical value in the polishing correction height numerical value set, and then polishing correction is carried out on the gasket to be polished; the pad polishing module 607 is used for polishing the corresponding pad 200 according to the polishing value obtained by the current calculation; the shim management module 608 is configured to construct a shim management database, where the shim management database includes: the number of each gasket, the initial height value and the polishing record data set under different numbers are calculated to obtain the loss parameters of the gaskets corresponding to different numbers according to the data in the gasket management database.
Example 3
A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of a precision compensation method for a five axis linkage double pendulum cutter head as described in embodiment 1 when executing the computer program.
In the present embodiment, as shown in fig. 5, the terminal apparatus 500 includes a CPU501, which can perform various appropriate actions and processes according to a program stored in a ROM502 or a program loaded from a storage section into a RAM 503. In the RAM503, various programs and data required for the system operation are also stored. The CPU501, ROM502, and RAM503 are connected to each other through a bus 504. I/O interface 505 is also connected to bus 504.
The following components are connected to the I/O interface 505: an input section 506 including a keyboard, a mouse, and the like; an output portion 507 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker, and the like; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The drives are also connected to the I/O interface 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as needed so that a computer program read therefrom is mounted into the storage section 508 as needed.
In particular, the process described above with reference to flow diagram 1 may be implemented as a computer software program according to an embodiment of the present invention. For example, embodiment 3 of the present invention includes a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowchart. In such embodiments, the computer program may be downloaded and installed from a network via a communication portion, and/or installed from a removable medium. The above-described functions defined in the system of the present invention are performed when the computer program is executed by the CPU 501.
The computer readable medium shown in the present invention may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases. The described units or modules may also be provided in a processor, for example, as: the processor comprises a first generation module, an acquisition module, a search module, a second generation module and a combination module. The names of these units or modules do not in any way limit the units or modules themselves, and the acquisition module may also be described as "an acquisition module for acquiring a plurality of instances to be probed in the base table", for example.
Example 4
The present invention also provides a computer-readable medium that may be contained in the electronic device described in the above embodiments; or may exist alone without being incorporated into the electronic device. The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to implement a precision compensation method for a five-axis linkage double pendulum milling head as described in the above embodiments.
The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present invention (but not limited to) having similar functions are replaced with each other.

Claims (10)

1. The method for compensating the precision of the five-axis linkage double-pendulum milling head is characterized by comprising the following steps of: the main frame of swaing, the one end of main frame of swaing is connected with the main shaft, be equipped with the gasket layer on the main shaft matched with terminal surface of main frame of swaing, the gasket layer includes: the plurality of gaskets encircle the axis of main shaft is followed the terminal surface circumference distribution of oscillating body frame, the precision compensation method includes:
Continuously acquiring the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer to form a gasket height value set corresponding to the current gasket layer;
traversing each height value in the height value set, and extracting the maximum height value mark in the height value set as a reference height value;
obtaining a correction range according to the reference height value and a preset error range;
according to the correction range, screening each height value in the height value set in the correction range to obtain a target height value set;
and according to the obtained target height value set, obtaining a gasket corresponding to each height value in the target height value set, and polishing the gasket to compensate the precision of the five-axis linkage double-pendulum milling head.
2. The method for compensating the precision of the five-axis linkage double-pendulum milling head according to claim 1, wherein the method comprises the steps of,
the method further comprises the steps of, after obtaining the gaskets corresponding to the height values in the target height value set according to the obtained target height value set,:
deleting the height values which are smaller than or equal to the preset polishing value in the height value set to obtain a polishing correction height value set;
Calculating to obtain a polishing value according to the average value of the reference height value and the height value in the polishing correction height value set;
and polishing the gasket to be polished according to the polishing value, and recording the height value and correction date of the polished gasket to form a group of polishing records.
3. The method for compensating the precision of the five-axis linkage double-pendulum milling head according to claim 2, wherein,
the method comprises the steps of continuously obtaining the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer, and after forming a gasket height value set corresponding to the current gasket layer, further comprising:
obtaining a gasket corresponding to a height value smaller than or equal to a preset polishing value;
checking the height of the gasket, and acquiring a plurality of height values along the circumferential direction of the gasket;
and when the height value corresponding to the gasket is judged to be continuously smaller than or equal to the preset polishing value, replacing the gasket according to the number of the gasket.
4. The method for compensating the precision of the five-axis linkage double-pendulum milling head according to claim 3, wherein,
the pad that needs to polish is polished with the numerical value of polishing, specifically includes:
Acquiring first image information of the gasket to be polished, wherein the first image information is used for reflecting the surface flatness of the gasket;
dividing a region to be polished on the surface of the gasket according to the first image information;
and polishing the region to be polished according to the polishing value.
5. The method for compensating the precision of a five-axis linkage double pendulum milling head according to claim 4, wherein,
after the polishing is performed on the area to be polished by the polishing value, the method further comprises the following steps:
placing the polished gasket back to the gasket layer;
continuously acquiring the height value of the gasket layer again along the circumferential direction of the gasket layer to form a gasket height rechecking value set corresponding to the current gasket layer;
and judging that the difference between any two height values in the gasket height rechecking value set meets the correction error range, confirming that the gasket to be polished is corrected, and defining the service date of the gasket as the correction date.
6. The method for compensating the precision of the five-axis linkage double-pendulum milling head according to claim 5, wherein,
the precision compensation method further comprises the following steps:
constructing a gasket management database, the gasket management database comprising: the number of each gasket, the initial height value and the polishing record data set under different numbers; the sanding record data set includes: a plurality of groups of polishing records;
According to the data in the gasket management database, loss parameters corresponding to gaskets with different numbers are calculated.
7. The method for compensating the precision of the five-axis linkage double-pendulum milling head according to claim 6, wherein,
according to the data in the gasket management database, the loss parameters of gaskets corresponding to different numbers are calculated, and the method specifically comprises the following steps:
continuously acquiring a plurality of groups of polishing records under the gaskets with the same number;
drawing a loss curve corresponding to the gasket according to a plurality of groups of polishing records and the initial height value under the numbered gasket;
filtering out singular points in the loss curve to obtain a standard loss curve;
and obtaining the loss parameters of the gaskets with corresponding numbers according to the standard loss curve.
8. The utility model provides a precision compensation arrangement of five-axis linkage double pendulum cutter head which characterized in that, five-axis linkage double pendulum cutter head includes: the main frame of swaing, the one end of main frame of swaing is connected with the main shaft, be equipped with the gasket layer on the main shaft matched with terminal surface of main frame of swaing, the gasket layer includes: the gasket encircles the axis of main shaft is followed the terminal surface circumference distribution of oscillating body frame, precision compensation device includes:
The height value acquisition module is configured to continuously acquire the height value of the gasket layer along the first direction along the circumferential direction of the gasket layer to form a gasket height value set corresponding to the current gasket layer;
the reference height value calculation module is configured to traverse each height value in the height value set and extract the maximum height value mark in the height value set as a reference height value;
the correction range calculation module is configured to obtain a correction range according to the reference height value and the preset error range;
the target height value set acquisition module is configured to screen each height value in the height value set in the correction range according to the correction range to obtain a target height value set;
the gasket acquisition module is configured to acquire gaskets corresponding to all the height values in the target height value set according to the obtained target height value set, and polish the gaskets to compensate the precision of the five-axis linkage double-pendulum milling head.
9. Terminal equipment comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, realizes the steps of a precision compensation method of a five-axis linkage double pendulum milling head according to any one of claims 1 to 7.
10. A computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor performs the steps of a method of precision compensation of a five axis double pendulum milling head according to any one of claims 1 to 7.
CN202410211401.5A 2024-02-27 2024-02-27 Precision compensation method, device, equipment and medium for five-axis linkage double-pendulum milling head Active CN117773208B (en)

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