Numerical control machine tool equipment embedded with error compensation function and compensation method thereof
An error compensation and CNC machine tool technology, applied in the field of error compensation, can solve problems such as increased measurement errors, achieve good stability, reduce delay and interference, and achieve high integration
Inactive Publication Date: 2018-07-27
WUHAN HUAZHONG NUMERICAL CONTROL
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Problems solved by technology
However, the 5-axis and 6-axis machine tools have more than 40 to 50 errors, and it takes several days to complete this process. The ambient temperature changes caused by the weather and the temperature difference between day and night during the measurement period will also have a certain impact on the heat exchange of the machine tool, resulting in Increased measurement error
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] Such as figure 1 As shown, the embodiment of the present invention provides a CNC machine tool with embedded error compensation function, including a CNC system, a machine tool, a servo driver, a servo motor, a temperature sensor, a temperature acquisition card, and an error measuring instrument. The CNC system can use Huazhong CNC The HNC-8 full-series CNC system, the servo driver can use HSV-160U / 180U / 210U series servo driver, and the temperature acqu...
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The invention provides numerical control machine tool equipment embedded with an error compensation function and a compensation method thereof. The numerical control machine tool equipment includes anumerical control system, a machine tool, a servo drive, a servo motor, a temperature sensor, a temperature acquisition card and an error measuring instrument. The servo motor is electrically connected with an axis controller of the numerical control system through the servo driver. The temperature sensor is arranged at a key temperature measuring point of the machine tool. The temperature sensoris electrically connected with the numerical control system through the temperature acquisition card. The numerical control system includes a spatial error compensation module and a thermal error compensation module. The spatial error compensation module is used for building a spatial error compensation model according to spatial error data of each axis of the machine tool and compensating the spatial error. The thermal error compensation module is used for building a thermal error compensation model in accordance with the temperature value of each key temperature measuring point of the machine tool from a cold state to a warm-up state and the error data of each key temperature measuring point from the cold machine at different temperatures and achieving thermal error compensation. According to the invention, the processing precision and stability of the numerical control machine tool can be effectively improved.
Description
technical field [0001] The invention relates to the technical field of error compensation for numerical control machine tool processing, in particular to a numerical control machine tool device embedded with an error compensation function and a compensation method thereof. Background technique [0002] The expensive high-precision machine tools purchased by enterprises will always produce large and small errors in the process of production and processing, so that the processed products cannot meet the accuracy requirements. Space error compensation has corrected the errors generated when the machine tool is working. In theory, it has been proved to be an effective method to reduce machine tool errors, but at this stage, domestic CNC systems only have a small amount of error compensation such as backlash and pitch error compensation, and do not have a comprehensive space error compensation function. The compensation device can only be connected externally through the limited ...
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IPC IPC(8): G05B19/404
CPCG05B19/404
Inventor 朱志红杨祥王旭
Owner WUHAN HUAZHONG NUMERICAL CONTROL