CN-122008380-A - Side hole positioning linkage edge sealing execution method and system

CN122008380ACN 122008380 ACN122008380 ACN 122008380ACN-122008380-A

Abstract

The invention discloses a side hole positioning linkage edge sealing execution method and a side hole positioning linkage edge sealing execution system, and belongs to the field of woodworking machinery manufacturing. The method comprises the steps of capturing real-time characteristics, scanning the side edges of a plate through a non-contact sensor to obtain an original data set, extracting characteristic lines based on the original data set, establishing a digital virtual coordinate system taking the real geometric center of the plate as a reference, comparing an actual edge with a theoretical edge to generate a compensation function changing along with the feeding length, and dynamically adjusting radial displacement of an edge banding finishing tool according to the compensation function and controlling a main shaft of a side hole to conduct axial coordinate compensation to enable the central axis of the side hole to coincide with the real geometric center plane of the plate. The invention also discloses a system for realizing the method. The invention can eliminate the influence of the geometric error of the edge of the plate on the processing precision, realize the high-precision dynamic cooperative processing of the edge sealing and the side holes, and improve the processing quality and consistency of the plate.

Inventors

FU TAO
LI LIANG
JIA JIGANG
TIAN YANBING
SHANG JIAN

Assignees

中品智能机械有限公司

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (10)

1. The side hole positioning linkage edge banding execution method is characterized by comprising the following steps of: The method comprises the steps of capturing real-time characteristics, namely scanning the side edges of a plate through a non-contact sensor at the processing starting end of the plate to obtain an original data set representing the edge geometric form of the plate; a virtual reference reconstruction step, namely extracting characteristic lines of the side edges of the plate through a control algorithm based on the original data set, and establishing a digital virtual coordinate system taking the real geometric center of the plate as a reference; The deviation mapping step is that the actual edge of the plate is compared with the theoretical edge under the digital virtual coordinate system, and a compensation function which changes along with the feeding length of the plate is generated; and a multi-axis linkage compensation step of dynamically adjusting the radial displacement of the edge banding finishing tool according to the compensation function in the edge banding execution process, and simultaneously controlling the main shaft of the side hole to carry out axial coordinate compensation according to the compensation function so as to ensure that the central axis of the side hole coincides with the real geometric central plane of the plate.
2. The side hole positioning linkage edge banding execution method according to claim 1, wherein the real-time feature capturing step further includes: carrying out full scanning on the side edges of the plate at a preset sampling frequency, and configuring an air blowing dust removing device to continuously clean a lens light path of the non-contact sensor, so that the continuity of data acquisition is ensured; the method comprises the steps of carrying out real-time preprocessing on an original data set through a central control unit, wherein the preprocessing comprises the steps of removing impulse noise points by applying a median filtering algorithm and carrying out smoothing processing on a data sequence by applying a Gaussian filtering algorithm so as to eliminate interference information; And converting the preprocessed data into a numerical matrix under a unified machine coordinate system through normalization processing.
3. The side hole positioning linkage edge banding execution method according to claim 1, wherein the virtual reference reconstruction step further includes: fitting the discrete data representing the edge depth in the original data set to generate a theoretical edge line representing the macroscopic geometrical trend of the side edge of the plate in the horizontal plane; Identifying upper edge points and lower edge points of the plate in the thickness direction, and calculating to obtain a central line of the plate in the thickness direction based on the upper edge points and the lower edge points; and constructing the digital virtual coordinate system by taking the feeding direction of the plate as an X axis and the theoretical edge line as a reference in the Y axis direction and the thickness central line as a reference in the Z axis direction, wherein the origin of the digital virtual coordinate system is set on the thickness central point of the feeding starting end of the plate.
4. The side hole positioning linkage edge banding execution method according to claim 3, wherein the deviation mapping step further includes: Traversing the feeding lengths of all sampling points, and carrying out difference value operation on the actual edge depth in the original data set and the theoretical edge depth under the digital virtual coordinate system to obtain local offset at each position; Fitting the discrete local offset into the compensation function which continuously changes along with the feeding length, and measuring the current feeding length of the plate in real time through a high-precision synchronous encoder to be used as an independent variable for calling the compensation function.
5. The side hole positioning linkage edge banding execution method according to claim 1, wherein the multi-axis linkage compensation step further includes: in the edge sealing executing process, measuring the actual thickness of the edge sealing belt in real time through an edge sealing belt thickness detection module, and generating a thickness correction value; When the axial coordinate compensation is carried out on the side hole spindle, the actually executed feed depth is obtained through calculation together according to the preset theoretical hole depth, the compensation function value corresponding to the current feed length and the thickness correction value, so that the influence of the edge sealing band thickness fluctuation on the side hole depth is eliminated.
6. The method for performing side hole positioning linkage edge sealing according to claim 5, wherein the side hole spindle further comprises an automatic cutter wear compensation mechanism when performing axial coordinate compensation, wherein the current drill wear degree is calculated by monitoring the load current change of the side hole spindle servo motor in real time and comparing the load current change with a pre-stored current-wear amount correspondence table, and a wear correction value is automatically added into the axial compensation amount.
7. The side hole positioning linkage edge banding execution method according to claim 1, wherein in the multi-axis linkage compensation step, radial adjustment of an edge banding finishing tool and axial depth correction of a side hole main shaft are executed based on compensation functions which are transmitted in advance by a central control unit through a high-speed field bus and stored in local buffer memories of all execution mechanisms, and synchronous pulses are generated by the central control unit according to real-time positions fed back by an encoder, so that compensation actions are ensured to strictly correspond to plate feeding positions.
8. The side hole positioning linkage edge banding execution method according to claim 1, wherein a second group of contour scanning modules are configured at the tail end of a processing line, the edge leveling degree and the side hole position after edge banding are checked on line, and check data are fed back to a central control unit in real time and used for conducting closed-loop optimization adjustment on the compensation function.
9. The side hole positioning linkage edge banding execution method according to claim 2 is characterized in that a median filtering algorithm is specifically that a window comprising five points in front and back is taken along a feeding direction by taking each sampling point as a center, the median of the depth value of the edge in the window is calculated, if the deviation between the depth value of the current point and the median exceeds a preset threshold value, the noise point is judged and replaced by the median, and the Gaussian filtering algorithm adopts a one-dimensional Gaussian kernel to carry out convolution operation.
10. A side hole positioning linkage edge banding execution system for implementing the side hole positioning linkage edge banding execution method according to any one of claims 1 to 9, characterized by comprising: The central control unit adopts a multi-core parallel processing architecture and is used for global logic operation, task scheduling and data processing; The linear array profile scanning module is arranged at the processing starting end and comprises a non-contact laser displacement sensor and an air blowing dust removing device, and is used for capturing the geometric form of the side edge of the plate in real time and generating an original data set; the motion control bus adopts an industrial Ethernet protocol, connects the central control unit with each executing mechanism and is used for transmitting instructions and data in real time; the edge sealing executing unit is controlled by the central control unit and comprises a dynamic finishing cutter group, a radial servo driver thereof and an edge sealing belt thickness detecting module for measuring the thickness of the edge sealing belt in real time; The side hole positioning unit is controlled by the central control unit and comprises a side hole main shaft and an axial servo system thereof; The central control unit reconstructs a digital virtual coordinate system taking the real geometric center of the plate as a reference based on the original data set, generates a compensation function changing along with the feeding length, and drives the edge sealing execution unit and the side hole positioning unit to perform multi-axis linkage compensation processing through the motion control bus.

Description

Side hole positioning linkage edge sealing execution method and system Technical Field The application belongs to the field of woodworking machinery manufacturing, and particularly relates to a side hole positioning linkage edge sealing execution method and system. Background Along with the deep advancement of digital transformation in the furniture manufacturing industry, the precision machining technology of the plate furniture has become a core element for improving the quality and the assembly efficiency of finished products. In the whole house customization and flexible production flow, the edge sealing treatment and the side hole processing quality directly determine the structural strength and the appearance precision of furniture. Along with the increasing demands of the market for high-quality woodworking machines, how to realize high-precision machining of the side edges of the plate in a high-speed continuous production environment becomes an important subject to be optimized in the woodworking machine automation field. The side hole positioning linkage edge sealing technology is a key technology for realizing synchronous processing of plate side edge modification and connecting hole sites. The technology mainly locks the side edge reference of the plate through the positioning device and drives the edge sealing execution unit and the side hole positioning unit to carry out cooperative operation, and the core aims are to improve the integration level of the processing procedure and reduce the production period. Under the processing state, the system needs to ensure the flatness after edge sealing and the accuracy of the depth of the side hole, thereby providing reliable basic support for subsequent hardware installation and cabinet assembly. However, the conventional side hole edge sealing integrated equipment generally adopts a mechanical stop block or a physical profiling to rigidly position, and is difficult to effectively solve the problems of geometric deformation such as non-straight cutting, edge breakage or damp deformation of the side edges of the plates in the previous procedure. The original edge error of the plate is easily transmitted to the depth parameter of the side hole by the existing mechanical forced positioning mode, so that obvious step feeling occurs in the plate splicing process. Meanwhile, a linkage feedback mechanism based on real-time characteristics is lacking between the edge sealing mechanism and the side hole mechanism, and dynamic compensation cannot be performed on tiny fluctuation of the side edge of the plate. In addition, due to the lack of digital identification capability of thickness fluctuation of the edge sealing band and the true geometric center of the plate, the system is difficult to eliminate assembly tolerance caused by hole site center deviation, so that the tightness of the finished furniture is seriously affected. Accordingly, a side hole positioning linkage banding implementation is desired. Disclosure of Invention The invention aims to provide a side hole positioning linkage edge sealing execution method and a side hole positioning linkage edge sealing execution system, which can effectively solve the problems in the background technology. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: in a first aspect, a side hole positioning linkage edge banding execution method includes the following steps: The method comprises the steps of capturing real-time characteristics, namely scanning the side edges of a plate through a non-contact sensor at the processing starting end of the plate to obtain an original data set representing the edge geometric form of the plate; a virtual reference reconstruction step, namely extracting characteristic lines of the side edges of the plate through a control algorithm based on the original data set, and establishing a digital virtual coordinate system taking the real geometric center of the plate as a reference; The deviation mapping step is that the actual edge of the plate is compared with the theoretical edge under the digital virtual coordinate system, and a compensation function which changes along with the feeding length of the plate is generated; and a multi-axis linkage compensation step of dynamically adjusting the radial displacement of the edge banding finishing tool according to the compensation function in the edge banding execution process, and simultaneously controlling the main shaft of the side hole to carry out axial coordinate compensation according to the compensation function so as to ensure that the central axis of the side hole coincides with the real geometric central plane of the plate. Preferably, the real-time feature capturing step further includes: carrying out full scanning on the side edges of the plate at a preset sampling frequency, and configuring an air blowing dust removing device to continuously clean a lens light path of the non-c