Straightness Compensation Method of Machine Tool Bed
A compensation method and straightness technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as affecting equipment production, inability to perform multi-axis superimposition compensation in the same direction, and cost, and achieve straightness accuracy. Improve and avoid the deterioration of equipment straightness accuracy and ensure the effect of machining accuracy
Active Publication Date: 2017-03-08
CHANGZHOU BAOLING HEAVY IND MACHINERY
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Problems solved by technology
The result of this compensation method is that only one set of compensation data can be used for each compensation direction, multi-axis simultaneous compensation cannot be performed in the same direction, the compensation coefficient is a constant value (usually 1), and the compensation data cannot change with temperature changes , multi-axis superposition compensation cannot be performed in the same direction
Since the accuracy requirements of each workpiece are different, if better machine tool accuracy is required at any time, it will take time and money to adjust the machine tool accuracy, which will affect equipment production
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[0049] The method for compensating the straightness of the machine bed is characterized in that it comprises the following steps (the present invention takes the HCW3-250 CNC boring and milling machine as an example, and describes the temperature compensation of the straightness for the X-axis effective machining stroke of the CNC boring and milling machine of 13 meters ):
[0050] Step 1, such as image 3 , use the laser interferometer to detect the straightness deviation of the compensation axis: start from the minimum coordinate point of the straightness compensation to detect the straightness deviation in the Y-axis direction, detect a point data at an interval of 1000mm, and use the same method to detect the straightness in the Z-axis direction Deviation data. The straightness data of the detection bed in the Y-axis direction are D1y, D2y, D3y...Dny, where Dny is the nth compensation point data in the Y-axis direction, and the straightness data of the detection bed in th...
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The invention discloses a straightness compensation method for a machine tool body. The straightness compensation method includes the steps that step1, straightness data of the machine tool body in the Y-axis direction are detected and respectively include D1y, D2y, D3y...... and Dny, straightness data of the machine tool body in the Z-axis direction are detected and respectively include D1z, D2z, D3z...... and Dnz, and the deviation of the straightness of the machine tool body in the Y-axis direction or the Z-axis direction is obtained through calculation; step 2, machine tool body temperature signals collected by a temperature sensor are converted into an actual temperature value of the machine tool body through a temperature transducer; step 3, real-time coordinate values of a compensating shaft are read through a machine tool control system; step 4, a following straightness compensation mathematical calculation model is built in the machine tool control system; step 5, the machine tool control system reads a coordinate position, calculates the compensation coefficient corresponding to the coordinate position and calculates the actual deviation of the current straightness; step 6, the actual deviation of the straightness is compensated according to the compensation amount obtained in the step 5.
Description
technical field [0001] The invention relates to a straightness compensation method of a machine bed. Background technique [0002] As large-scale metal cutting processing equipment, most of them work in a non-constant temperature environment, which is greatly affected by temperature changes throughout the year, day and night temperature changes, and is greatly affected by local temperature changes; during the use of processing equipment , changes due to local temperature effects can be avoided. Such as: avoid sunlight, close doors and windows to avoid ventilation, keep local heat sources away from equipment, etc.; it is inevitable to be affected by the temperature difference between day and night and the temperature difference between the four seasons. Temperature changes will cause changes in the straightness of the bed in the vertical and horizontal directions, resulting in a curved axial movement trajectory, that is, when the temperature is high, the middle part of the b...
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IPC IPC(8): G06F19/00
Inventor 崔阿庆傅政宏张爱华许小平秦珏林
Owner CHANGZHOU BAOLING HEAVY IND MACHINERY