CN-122007982-A - Cutter width dimension detection method and numerical control cutting machine

CN122007982ACN 122007982 ACN122007982 ACN 122007982ACN-122007982-A

Abstract

The application relates to a cutter width dimension detection method and a numerical control cutter, wherein the numerical control cutter comprises an attitude adjustment station and at least two groove sensors, wherein the attitude adjustment station and the at least two groove sensors are preset outside a cutting station of the numerical control cutter, all the groove sensors are arranged in an extending mode along the same normal direction, a detection station is preset between two groups of detection surfaces of the numerical control cutter, the method comprises the steps of controlling the cutter to run from the cutting station to the attitude adjustment station, performing inclination adjustment on the cutter at the attitude adjustment station to enable the current axis direction of the cutter to be consistent with the normal direction, controlling the cutter to run from the attitude adjustment station, moving to the detection station through detection openings formed between the two groups of detection surfaces of all the groove sensors, and performing non-contact width detection on the cutter by adopting all the groove sensors at the detection station to obtain a width detection result. The application solves the problem that the existing detection method in the related technology can not realize non-contact accurate detection of the width of the cutter.

Inventors

CAO ZHIJIAO
ZHANG AIMEI
WANG JUNYUE
DU NENGPING

Assignees

杰克科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260305

Claims (10)

1. The method for detecting the width and the size of the cutter is suitable for a numerical control cutting machine and is characterized in that the numerical control cutting machine comprises an attitude adjusting station and at least two groove sensors, wherein the attitude adjusting station is preset outside the cutting station of the numerical control cutting machine, and detection openings formed between two groups of detection surfaces of all the groove sensors are consistent in orientation; the method comprises the following steps: the inclination adjustment is carried out on the cutter at the gesture adjustment station, so that the current axis direction of the cutter is consistent with the normal direction; controlling the cutter to run from the gesture adjusting station and move to the detecting station through the detecting opening; And at the detection station, performing non-contact width detection on the cutter by adopting all groove sensors so as to obtain a width detection result.
2. The tool width dimension detection method according to claim 1, wherein the performing inclination adjustment of the tool at the posture adjustment station includes: acquiring a first direction vector of the normal direction of all groove sensors based on a coordinate system pre-established by the numerical control cutting machine; And adjusting the current axis direction based on the first space included angle to enable the current axis direction to be consistent with the normal direction.
3. The method of claim 2, wherein after the posture adjustment station performs inclination adjustment of the cutter, the method further comprises performing yaw adjustment of the cutter at the posture adjustment station, specifically comprising: acquiring reference normal vectors corresponding to two groups of detection planes of all the groove sensors based on a coordinate system pre-established by the numerical control cutting machine; calculating a second space included angle between the reference normal vector and the current normal vector; And controlling the cutter to deflect around the current axis direction based on the second space included angle so as to enable the surface to be detected of the cutter to be parallel to two groups of detection surfaces of all the groove sensors.
4. A method of detecting a width dimension of a tool according to claim 3 wherein said performing non-contact width detection of said tool at said detection station using all of the groove sensors to obtain a width detection result comprises: controlling the cutter to rotate around the current axis direction in the detection station, and continuously detecting first width data of the cutter based on all groove sensors to obtain the width detection result; And/or controlling the cutter to perform reciprocating lifting motion along the current axis direction, and continuously detecting second width data of the cutter based on all the groove sensors to obtain the width detection result.
5. The method of claim 4, wherein said controlling the tool to rotate about the current axis direction in the inspection station and continuously inspecting the first width data of the tool based on all of the groove sensors to obtain the width inspection result comprises: controlling the cutter to rotate around the current axis direction at a first preset speed for at least half a cycle in the detection station; The method comprises the steps of continuously detecting first width data of a cutter by all groove sensors, correspondingly recording the first width data with a preset first period, correspondingly forming a first width data set, and determining the first period based on the first preset speed and the time of half a rotation period of the cutter; And extracting a width maximum value from the corresponding first width data set for each groove sensor respectively, and taking all the width maximum values as the width detection result.
6. The method of claim 4, wherein the controlling the tool to reciprocate along the current axis and continuously detect the second width data of the tool based on all of the groove sensors to obtain the width detection result comprises: Controlling the cutter to reciprocate and lift in a preset first stroke along the current axis direction at a second preset speed and a first frequency; all the groove sensors continuously detect and record second width data of the cutter at the position of the corresponding groove sensor, and correspondingly form a second width data set; And respectively calculating arithmetic average values of all data in the second width data set corresponding to each groove sensor, and taking all the arithmetic average values as the width detection result.
7. The method of claim 1, wherein the controlling the tool to rotate about the current axis direction in the inspection station and continuously inspecting the first width data of the tool based on all of the groove sensors to obtain the width inspection result further comprises: Controlling the cutter to reciprocate in a preset second angle interval at a third preset speed around the current axis direction, and simultaneously controlling the cutter to reciprocate in a preset second stroke at a fourth preset speed along the current axis direction, wherein the duration of the reciprocating rotation is a preset first detection duration, and the frequency of the reciprocating lifting movement is a preset second frequency; when the cutter simultaneously performs reciprocating rotation and reciprocating lifting movement, all the groove sensors continuously collect a second group of width data in a preset second recording period; calculating arithmetic average values of all data acquired by each groove sensor respectively to obtain a knife width sub-result corresponding to each sensor; And taking the arithmetic average value of knife width sub-results corresponding to all the sensors as the width detection result.
8. The method for detecting a width dimension of a cutter according to claim 1, characterized in that the method further comprises: When a preset calibrated knife width parameter before cutting is a first effective value, responding to an automatic trigger signal, controlling the knife to run from the cutting station, obtaining a corresponding width detection result, and then controlling the knife to return to the cutting station; Calculating the actually measured comprehensive width of the cutter based on the width detection result; Obtaining a difference value based on the actually measured comprehensive width and a software theoretical blade width parameter, generating prompt updating information or blade width abnormality alarm information according to the relation between the difference value and a first preset threshold value, and correspondingly updating the theoretical blade width parameter; And generating knife sharpening function abnormality alarm information according to the relation between the difference between the width detection results and a second preset threshold value.
9. A numerical control cutter, characterized in that it is adapted to the cutter width dimension detection method according to any one of claims 1 to 8, comprising: A cutting station; the gesture adjusting station is preset outside the cutting station; The detection openings formed between the two groups of detection surfaces of the at least two groove sensors are consistent in orientation, all the groove sensors are arranged in an extending mode along the same normal direction, and a detection station is formed between the two groups of detection surfaces; the at least two groove sensors are fixedly arranged on the mounting support; The main support is connected with the mounting support and is used for mounting the assembly provided with the sensor on the cross beam of the numerical control cutting machine; The numerical control cutting machine comprises a gesture adjusting station, a detecting station, a cutting tool and a numerical control cutting machine, wherein the gesture adjusting station and the detecting station are both located outside the cutting station of the numerical control cutting machine, and the cutting tool of the numerical control cutting machine can be controlled to move to the gesture adjusting station and the detecting station.
10. The digitally controlled cutter of claim 9 wherein the digitally controlled cutter further comprises: The reinforcing plate is connected with the main support; The main support is provided with a strip waist-shaped hole extending along the normal direction, and the mounting support is connected with the main support through a fastener penetrating through the strip waist-shaped hole.

Description

Cutter width dimension detection method and numerical control cutting machine Technical Field The application relates to the technical field of detection of cutter width and size of a numerical control cutting machine, in particular to a method for detecting cutter width and size and a numerical control cutting machine. Background In a numerical control cutting machine, the width dimension of the cutter is one of the key parameters affecting the cutting accuracy. The width of the new blade is the standard value when the new blade is initially used, but in order to keep the blade sharp in the cutting process, the cutter needs to be periodically polished, so that the width of the cutter is gradually reduced and possibly unevenly changed. The cutting process software generally updates the tool width data according to a theoretically calculated sharpening factor, but there is an unavoidable deviation between the theoretical data and the actual physical width of the tool. The deviation can directly cause inaccurate calculation of the cutting path, and a series of quality problems such as angle errors of cut pieces, cut offset, damage of adjacent cut pieces and the like are caused. Therefore, how to accurately and reliably detect the actual width of the cutter and correct the technological parameters in real time according to the detection result becomes an important improvement direction for improving the cutting precision and stability of the numerical control cutting machine. Currently, non-contact schemes for detecting knife width in a laser ranging mode exist in the industry. According to the scheme, the distance between the laser sensor and a single point on the side face of the cutter is measured through the laser sensor, and the width of the cutter is calculated based on a preset fixed cutter geometric model. However, the single-point measurement mode of the scheme cannot effectively represent the real width of the whole surface to be measured of the cutter, particularly when the cutter is irregular in width due to abrasion or uneven polishing, the calculation model of the cutter is seriously dependent on an ideal assumption that the angle of the cutter is fixed, and errors are easily introduced when the actual angle is changed due to the change of polishing technology. Therefore, the prior art is difficult to realize high-precision non-contact knife width measurement under complex actual working conditions. In the prior art, no effective solution is proposed at present for the technical problem of how to realize non-contact accurate detection of the width of a cutter. Disclosure of Invention The embodiment of the application provides a cutter width dimension detection method and a numerical control cutting machine, which are used for solving the problem that the existing detection method in the related art cannot realize non-contact accurate detection of the cutter width. In the first aspect, the embodiment of the application provides a cutter width and size detection method which is suitable for a numerical control cutting machine, wherein the numerical control cutting machine comprises an attitude adjustment station and at least two groove sensors, wherein the attitude adjustment station is preset outside a cutting station of the numerical control cutting machine, and detection openings formed between two groups of detection surfaces of all the groove sensors are consistent in orientation, and all the groove sensors are arranged in an extending way along the same normal direction; the method comprises the following steps: the inclination adjustment is carried out on the cutter at the gesture adjustment station, so that the current axis direction of the cutter is consistent with the normal direction; controlling the cutter to run from the gesture adjusting station and move to the detecting station through the detecting opening; And at the detection station, performing non-contact width detection on the cutter by adopting all groove sensors so as to obtain a width detection result. In some of these embodiments, the performing inclination adjustment of the tool at the pose adjustment station includes: acquiring a first direction vector of the normal direction of all groove sensors based on a coordinate system pre-established by the numerical control cutting machine; And adjusting the current axis direction based on the first space included angle to enable the current axis direction to be consistent with the normal direction. In some further embodiments, after the posture adjustment station performs inclination adjustment on the tool, the method further includes performing yaw adjustment on the tool at the posture adjustment station, specifically including: acquiring reference normal vectors corresponding to two groups of detection planes of all the groove sensors based on a coordinate system pre-established by the numerical control cutting machine; calculating a second space included angle between the ref