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CN-121254743-B - Deviation correcting method, system and equipment based on tool bit

CN121254743BCN 121254743 BCN121254743 BCN 121254743BCN-121254743-B

Abstract

The invention discloses a deviation correcting method, a system and equipment based on a cutter head, which relate to the technical field of cutter head correction, wherein after a cutter head replacement correction request sent by a user side is received, the system executes first-time forward cutting to generate a forward cutting groove virtual model, extracts cutting parameters and compares the preset parameters to obtain forward cutting deviation data, the system executes second-time backward cutting after compensating a cutter head track to generate a backward cutting groove virtual model and extracts cutting parameters to obtain backward cutting deviation data, compares the backward cutting groove virtual model with a preset residual deviation threshold to judge whether the cutter head is corrected, and if the correction is not completed, calculates a correctable value to judge whether the backward cutting deviation data can be continuously used for subsequent compensation. According to the method, whether the deviation of the cutter head can be compensated or not can be dynamically judged according to actual conditions, system oscillation caused by blind correction is avoided, quick detection, effective compensation and intelligent decision of the deviation of the cutter head are realized, and cutting precision and system stability are improved.

Inventors

  • CHEN HONG

Assignees

  • 合肥润杰数控设备制造有限公司

Dates

Publication Date
20260512
Application Date
20250929

Claims (7)

  1. 1. The deviation correcting method based on the cutter head is characterized by comprising the following steps of: In the front detection process, receiving a cutter head replacement correction request sent by a user side, carrying out forward cutting for the first time after confirmation, generating a forward cutting groove virtual model, and extracting corresponding cutting parameter values from the forward cutting groove virtual model to compare with preset parameters of a system to obtain forward cutting deviation data; The mirror image rotating cutter head compensates the movement track of the cutter head according to the forward cutting deviation data, then performs the second backward cutting, generates a backward cutting groove virtual model, and extracts corresponding cutting groove parameters from the backward cutting groove virtual model for comparison with system preset parameters to obtain the backward cutting deviation data; Comparing the backward cutting deviation data with a preset residual deviation threshold value, judging whether the cutter head is corrected, and judging whether the cutter head can enter a normal cutting mode; If the cutter head can not enter the normal cutting mode, calculating a correctable value of the cutter head, judging whether the backward cutting deviation data can still be used as a new correction amount to continue the deviation correction of the follow-up cutter head according to the correctable value; The step of calculating a correctable value for the tool tip includes: calculating a compensation stable value according to the state information in the second backward cutting process, and adding the deviation direction consistent ratio and the compensation stable value to obtain a correctable value of the cutter head; the step of calculating the compensation stable value according to the state information in the second time of the backward cutting process comprises the following steps: The method comprises the steps of obtaining a plurality of continuous track points of a cutter head in a second backward cutting process, and constructing a direction trend coding sequence according to a transverse coordinate difference value and a longitudinal coordinate difference value between two adjacent track points, wherein the direction trend coding mode is that if a transverse coordinate value of a rear track point is larger than a front track point and a longitudinal coordinate value of the rear track point is also larger than the front track point, a corresponding section track direction code is +1, if the transverse coordinate value of the rear track point is smaller than the front track point and the longitudinal coordinate value of the rear track point is also smaller than the front track point, the direction code is-1, and the other condition direction code is 0, and a complete direction trend coding sequence is generated by all the adjacent track points; Counting the number of the most frequently occurring of three coding values in the direction trend coding sequence, recording the number as a maximum repeated value, dividing the maximum repeated value by the total length of the direction coding sequence, and obtaining the direction trend repetition rate; Counting the number of times of numerical value change between adjacent codes in the direction trend coding sequence, defining the number of times of direction mutation, dividing the number of times of direction mutation by the total length of the coding sequence, and subtracting one to obtain the perturbation steering frequency; The square of the perturbation steering frequency is subtracted from the value 1 to serve as a base, the direction trend repetition rate serves as an index, power operation is performed, and the obtained result serves as a compensation stable value.
  2. 2. The bit-based misalignment correction method of claim 1 wherein the step of comparing the back-cut misalignment data with a predetermined residual misalignment threshold to determine if the bit has been corrected and whether a normal cut mode can be entered comprises: If all the data in the backward cutting deviation data are smaller than the corresponding preset residual deviation threshold value, the fact that the cutter head is corrected is indicated, correction is not needed to be continued, and formal cutting of subsequent products can be carried out on the cutter head after the correction of the deviation is completed; if any data in the backward cutting deviation data is not smaller than the corresponding preset residual deviation threshold value, the fact that the cutter head is not corrected is indicated, and the follow-up normal cutting mode cannot be entered.
  3. 3. The bit-based misalignment correction method according to claim 1, wherein the step of calculating a misalignment direction coincidence ratio from the state information in the first forward cutting process and the second backward cutting process comprises: Acquiring a transverse deviation value and a longitudinal deviation value which go to cutting for the first time, and respectively marking the transverse deviation value and the longitudinal deviation value as a first transverse deviation value and a first longitudinal deviation value; Acquiring a transverse deviation value and a longitudinal deviation value of the second backward cutting, and respectively marking the transverse deviation value and the longitudinal deviation value as a second transverse deviation value and a second longitudinal deviation value; The method comprises the steps of obtaining a first transverse deviation value, obtaining a second transverse deviation value, obtaining a difference transverse component by subtracting the second transverse deviation value from the first transverse deviation value, obtaining a difference longitudinal component by subtracting the second longitudinal deviation value from the first longitudinal deviation value, obtaining a difference longitudinal component by adding the square of the difference transverse component and the square of the difference longitudinal component, and obtaining a difference modulus value by squaring the added result.
  4. 4. The bit-based misalignment correction method of claim 1 wherein the step of calculating a bias direction coincidence ratio from the state information in the first forward cutting process and the second backward cutting process further comprises: calculating the product of the first transverse deviation value and the second longitudinal deviation value, taking the product of the second longitudinal deviation value and the first longitudinal deviation value as a first product, taking the product of the second longitudinal deviation value and the first longitudinal deviation value as a second product, and taking the absolute difference value of the first product minus the second product as a molecule; Adding the absolute value of the first product and the absolute value of the second product and the value 1, taking the added sum as a denominator, and dividing the numerator by the denominator to obtain a rotation ratio factor; Adding the rotation ratio factor, the difference modulus value and the value 1, and taking the reciprocal of the added result as the sum A consistency intermediate value; And adding the numerical value 1 and the differential modulus value to obtain an exponential factor, executing power operation, taking the consistent intermediate value as a base number, taking the exponential factor as an index, and taking an operation result as a consistent ratio of the deviation direction.
  5. 5. The bit-based offset correction method according to claim 1, wherein the step of determining whether the backward cut offset data can be used as a new correction amount for the offset correction compensation of the subsequent cut is performed according to the correctable value: Comparing the correctable value with a preset correctable value threshold, if the correctable value is not smaller than the preset correctable value threshold, indicating that the backward cutting deviation data can be used as a new correction amount to continue to carry out deviation correction compensation of the total follow-up cutting in the front detection process until each data in the deviation data is smaller than the corresponding preset residual deviation threshold, completing the deviation correction of the cutter head, and carrying out formal cutting of the follow-up product based on the cutter head after the deviation correction is completed; if the correctable value is not smaller than the preset correctable value threshold, the correction value is not smaller than the preset correctable value threshold, the fact that the backward cutting deviation data can not be used as a new correction amount to continue to carry out deviation correction compensation of the follow-up cutting of the front detection process is indicated, an alarm is immediately sent out, and the deviation correction of the cutter head is achieved manually.
  6. 6. A tool bit based misalignment correction system for implementing the tool bit based misalignment correction method of any one of claims 1-5, the system comprising: The first cutting module is used for receiving a cutter head replacement correction request sent by a user side in a front-end detection process, carrying out forward cutting for the first time after confirmation is finished, generating a forward cutting groove virtual model, and extracting corresponding cutting parameter values from the forward cutting groove virtual model and comparing the corresponding cutting parameter values with preset parameters of a system to obtain forward cutting deviation data; The second cutting module is used for compensating the movement track of the cutter head according to the forward cutting deviation data, then executing the second backward cutting, generating a backward cutting groove virtual model, extracting corresponding cutting groove parameters from the backward cutting groove virtual model, and comparing the corresponding cutting groove parameters with system preset parameters to obtain the backward cutting deviation data; The preliminary correction module is used for comparing the backward cutting deviation data with a preset residual deviation threshold value and judging whether the cutter head is corrected or not and whether the cutter head can enter a normal cutting mode or not; And the judging and correcting module is used for calculating the correctable value of the cutter head if the cutter head cannot enter the normal cutting mode, judging whether the backward cutting deviation data can still be used as a new correction amount to continue the deviation correction of the follow-up cutter head according to the correctable value.
  7. 7. The deviation correcting device based on the tool bit is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface and the memory are communicated with each other through the communication bus; a memory for storing a computer program; A processor for implementing the steps of the bit-based misalignment correction method according to any one of claims 1-5 when executing a program stored on a memory.

Description

Deviation correcting method, system and equipment based on tool bit Technical Field The invention relates to the technical field of tool bit correction, in particular to a tool bit-based deviation correction method, a system and equipment. Background Cutting based on the cutter head refers to a process mode of cutting and forming the material with high precision by taking a fixed or movable cutter head as an executing element in the processing process of sheet materials such as paper, films, fiber boards and the like, and the cutting precision directly influences the appearance quality and the dimensional stability of the product. In actual operation, the cutter head is extremely easy to be influenced by cutter abrasion, mounting error, tiny looseness of moving parts and non-uniformity of materials, so that a deviation phenomenon is generated, machining defects such as distortion, imprecise splicing and rough edges of product cutting lines are caused, a large amount of materials can be scrapped, and a large amount of production cost is increased; In order to ensure that the cutter head does not deviate in the actual cutting process, the influence on the product is reduced, a front detection process is set before the product is subjected to formal cutting, namely, the cutting test is carried out by selecting an object with the same material as the product, observing whether the cutting path is consistent with the preset path in height, judging whether the cutter head in the current state can perform subsequent formal cutting of the product, and meanwhile, calculating and correcting deviation of cutting data intelligently according to the cutting state of the cutter head in the detection process, so that the cutter head can eliminate the deviation before formally cutting the product, and the accurate cutting of the formal cutting of the subsequent product is realized. However, in the correction of the cutter head in the existing pre-detection process, only the deviation of the cutter head is simply corrected directly, but a judging mechanism for whether the cutter head can be corrected for multiple times is lacked, the blind correction of the cutting deviation of the cutter head in the pre-detection process may cause poor correction effect, even the condition of excessive compensation or compensation failure is generated when the cutter head cannot be corrected effectively, the deviation of the cutter head cannot be eliminated truly before the product is cut formally, the subsequent product is cut formally further, unnecessary deviation accumulation or mechanical oscillation is caused, the appearance quality and the dimensional stability of the product are affected finally, and even a great amount of material waste and production cost increase are caused seriously. Disclosure of Invention The present invention aims to solve the above-mentioned problems, and provide a method, a system and a device for correcting misalignment based on a cutter head. In a first aspect of the present invention, a method for correcting misalignment based on a cutter head is first provided, the method comprising: receiving a cutter head replacement correction request sent by a user side in a front detection process, performing forward cutting for the first time after confirmation is completed, generating a forward cutting groove virtual model, and extracting corresponding cutting parameter values from the forward cutting groove virtual model to compare with preset parameters of a system to obtain forward cutting deviation data; The mirror image rotating cutter head compensates the movement track of the cutter head according to the forward cutting deviation data, then performs the second backward cutting, generates a backward cutting groove virtual model, and extracts corresponding cutting groove parameters from the backward cutting groove virtual model for comparison with system preset parameters to obtain the backward cutting deviation data; Comparing the backward cutting deviation data with a preset residual deviation threshold value, judging whether the cutter head is corrected, and judging whether the cutter head can enter a normal cutting mode; If the cutter head can not enter the normal cutting mode, calculating the correctable value of the cutter head, and judging whether the backward cutting deviation data can still be used as a new correction amount to continue the deviation correction of the follow-up cutter head according to the correctable value. Optionally, comparing the backward cutting deviation data with a preset residual deviation threshold, and determining whether the cutter head is corrected, and whether the cutter head can enter the normal cutting mode includes: If all the data in the backward cutting deviation data are smaller than the corresponding preset residual deviation threshold value, the fact that the cutter head is corrected is indicated, correction is not needed to be continued, and formal cutting of