CN112621388A - PSD-based parallel machine tool posture on-line monitoring device and monitoring method - Google Patents
PSD-based parallel machine tool posture on-line monitoring device and monitoring method Download PDFInfo
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- CN112621388A CN112621388A CN202011614645.6A CN202011614645A CN112621388A CN 112621388 A CN112621388 A CN 112621388A CN 202011614645 A CN202011614645 A CN 202011614645A CN 112621388 A CN112621388 A CN 112621388A
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- psd
- monitoring device
- cutter
- movable platform
- machine tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2414—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for indicating desired positions guiding the positioning of tools or workpieces
- B23Q17/2419—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for indicating desired positions guiding the positioning of tools or workpieces by projecting a single light beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2452—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces
- B23Q17/2457—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces of tools
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Abstract
The invention discloses a PSD-based parallel machine tool attitude online monitoring device and a monitoring method, the device comprises a monitoring device, the monitoring device comprises a movable platform, a tool and an attitude monitoring device, the tool is arranged on a shaft in the movable platform, the attitude monitoring device is arranged on the movable platform, the attitude monitoring device comprises a laser generator, a first PSD, a second PSD and a reflecting mirror, the monitoring device is in a natural state, the attitude of the tool is the same as that of the laser generator, the tool attitude is perpendicular to the PSD and the optical lever reflecting mirror in the motion process of the monitoring device, the specific function of the device is realized by relying on the PSD optical lever method principle, PSD optical position feedback is innovatively applied to the monitoring of the space attitude of the tool, the conventional PSD sensor is adopted, the self gravity of the laser generator is utilized, the structure is simple, the cost is low, the feedback precision can realize five-, and is favorable for realizing commercialization.
Description
Technical Field
The invention relates to the technical field of parallel five-axis machining of complex three-dimensional structural parts, in particular to a PSD-based parallel machine tool posture on-line monitoring device and monitoring method.
Background
The parallel machine tool has the characteristics of high rigidity, easy control, capability of realizing five types of processing, and capability of realizing high-efficiency and high-quality processing of complex structural parts. The machining of complex structural parts with small curvature can be realized, but the position and the posture of a cutter need to be monitored.
However, the parallel machine tool belongs to a semi-closed loop machine tool, the feedback can only be performed on a linear axis at present, and the posture of the tool cannot be fed back by using a conventional feedback method at present.
Aiming at the problems, the invention provides a PSD-based parallel machine tool posture on-line monitoring device and a monitoring method in order to accurately monitor the real-time posture of a tool and complete the full closed loop feedback of a parallel machine tool.
Disclosure of Invention
The invention aims to provide a PSD-based parallel machine tool posture on-line monitoring device and a monitoring method, which design a PSD-based parallel machine tool posture monitoring method based on the optical lever amplification principle by utilizing the characteristic that the gravity direction of a feedback signal generator is unchanged, have the advantages of accurately monitoring the real-time posture of a tool and finishing the full closed loop feedback of a parallel machine tool, and solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a parallel machine tool cutter gesture on-line monitoring device based on PSD, includes monitoring devices, monitoring devices is including moving platform, cutter and position appearance monitoring devices, and the cutter is installed on moving the epaxial in the platform, and position appearance monitoring devices installs on moving the platform.
Furthermore, the pose monitoring device comprises a laser generator, a first PSD, a second PSD and a reflector, the pose of the cutter is the same as that of the laser generator in a natural state, and the pose of the cutter is perpendicular to the PSD and the optical lever reflector in the motion process of the monitoring device.
A PSD-based parallel machine tool posture on-line monitoring device and a monitoring method comprise the following steps:
the method comprises the following steps: fixing the posture monitoring device on a movable platform of the parallel machine tool, and ensuring that the movable platform is horizontal, so that the laser generator is vertical under the action of gravity, and the tool posture is the same with the laser generator;
step two: turning on the laser generator to project the light beam onto the light lever reflector, and reflecting the light beam to the second PSD by the reflector;
step three: when the movable platform deflects, the tool posture changes, at the moment, the laser does not change under the action of gravity, but the relative position of the projection light spot and the reflector changes, the projection light spot is reflected and amplified and then the position of the light spot is changed when the projection light spot is projected to the second PSD, the position of the light spot is extracted through analysis to obtain the real-time position of the tool, and the tool posture is monitored in real time.
Compared with the prior art, the invention has the following beneficial effects:
1. the PSD-based parallel machine tool attitude online monitoring device and method provided by the invention have the specific function that PSD optical position feedback is innovatively applied to monitoring of the spatial attitude of the tool depending on the PSD optical lever method principle.
2. According to the PSD-based parallel machine tool posture on-line monitoring device and method, the conventional PSD sensor is adopted, the gravity of the laser generator is utilized, the structure is simple, the cost is low, the feedback precision can realize five-axis parallel machining terminal feedback, and meanwhile, the commercialization is favorably realized.
Drawings
FIG. 1 is a schematic view of the entire processing method of the present invention.
In the figure: 1. a movable platform; 2. a cutter; 3. a pose monitoring device; 3-1, a laser generator; 3-2, a first PSD; 3-3, a second PSD; 3-4, a reflector.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an online monitor device and a monitoring method for tool pose of a parallel machine tool based on PSD (position sensitive detector), comprises a monitor device, wherein the monitor device comprises a movable platform 1, a tool 2 and a pose monitor device 3, the tool 2 is mounted on a shaft in the movable platform 1, the pose monitor device 3 is mounted on the movable platform 1, the pose monitor device 3 comprises a laser generator 3-1, a first PSD3-2, a second PSD3-3 and a reflector 3-4, the pose of the tool 2 is the same as the pose of the laser generator 3-1 in a natural state, the pose of the tool 2 is vertical to the PSD3-2 and the optical lever reflector 3-4 in a motion process of the monitor device, and the use method of the monitor device is as follows: fixing a posture monitoring device 3 on a parallel machine tool movable platform 1, ensuring the movable platform to be horizontal, enabling a laser generator 3-1 to be vertical under the action of gravity, enabling the posture of a cutter 2 to be the same at the same time, opening the laser generator 3-1, enabling light beams to be projected onto an optical lever reflector 3-4, enabling the reflector 3-4 to reflect light beams to a second PSD3-3, enabling the posture of the cutter 2 to be changed when the movable platform 1 deflects, enabling the laser generator 3-1 not to be changed under the action of gravity at the moment, enabling the relative position of a projected light spot and the reflector 3-4 to be changed, enabling the light spot receiving position to be changed when the laser beam is projected onto the second PSD3-3 after being reflected and amplified, and obtaining the real-time position of the cutter 2 by analyzing and extracting the position of the light spot, so as to realize the real-time monitoring of the posture of the cutter 2, wherein the specific function of, the attitude of the laser generator 3-1 is kept unchanged under the action of gravity, the change of the attitude of the tool is obtained by analyzing the change of the position of the light spot, the PSD-based parallel machine tool attitude online monitoring device and monitoring method creatively apply PSD optical position feedback to the monitoring of the spatial attitude of the tool, and the conventional PSD sensor is adopted, so that the feedback of the laser generator is utilized, the structure is simple, the cost is low, the feedback precision can realize five-axis parallel processing terminal feedback, and the commercialization is facilitated.
In summary, the following steps: the PSD-based parallel machine tool posture on-line monitoring device and method comprises a monitoring device, the specific function of the device is realized by relying on a PSD optical lever method principle, PSD optical position feedback is innovatively applied to monitoring of the space posture of a tool, a conventional PSD sensor is adopted, the gravity of a laser generator is utilized, the structure is simple, the cost is low, the feedback precision can realize five-axis parallel processing terminal feedback, and meanwhile, the commercialization is favorably realized.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. The utility model provides a parallel machine tool cutter gesture on-line monitoring device based on PSD, includes monitoring devices, its characterized in that: the monitoring device comprises a movable platform (1), a cutter (2) and a pose monitoring device (3), wherein the cutter (2) is arranged on an axis in the movable platform (1), and the pose monitoring device (3) is arranged on the movable platform (1).
2. The PSD-based parallel machine tool attitude online monitoring device according to claim 1, characterized in that: the pose monitoring device (3) comprises a laser generator (3-1), a first PSD (3-2), a second PSD (3-3) and a reflector (3-4), the pose of the cutter (2) is the same as that of the laser generator (3-1) in a natural state, and the pose of the cutter (2) is perpendicular to the PSD (3-2) and the optical lever reflector (3-4) in the motion process of the monitoring device.
3. A PSD-based parallel machine tool posture on-line monitoring device and a monitoring method are characterized in that: the method comprises the following steps:
the method comprises the following steps: fixing the posture monitoring device (3) on the movable platform (1) of the parallel machine tool, and ensuring that the movable platform is horizontal, so that the laser generator (3-1) is vertical under the action of gravity, and the posture of the cutter (2) is the same;
step two: turning on the laser generator (3-1) to enable the light beam to be projected onto the light lever reflector (3-4), and enabling the reflector (3-4) to reflect the light beam to the second PSD (3-3);
step three: when the movable platform (1) deflects, the posture of the cutter (2) changes, at the moment, the laser (3-1) does not change under the action of gravity, but the relative position of the projection light spot and the reflector (3-4) changes, the laser is reflected and amplified and then projected to the second PSD (3-3), the receiving position of the light spot changes, the position of the light spot is analyzed and extracted to obtain the real-time position of the cutter (2), and the real-time monitoring of the posture of the cutter (2) is realized.
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| CN202011614645.6A CN112621388B (en) | 2020-12-30 | 2020-12-30 | Online monitoring device and monitoring method for tool postures of parallel machine tool based on PSD |
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