Method for measuring swing length of five-axis linkage numerical control machine tool
A CNC machine tool and five-axis linkage technology, which is applied in the direction of program control, computer control, general control system, etc., can solve the problems of increasing labor intensity of workers, difficult calculation and operation, and reducing work efficiency. The effect of improving work efficiency
Active Publication Date: 2019-05-10
GUANGZHOU CORESING ROBOT TECH CO LTD
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Problems solved by technology
Although this method reduces the error, its calculation operation is more difficult, resulting in a longer calculation time, thereby reducing work efficiency and increasing the labor intensity of workers
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[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:
[0034] refer to figure 1 and figure 2 , a method for measuring the pendulum length of a five-axis linkage CNC machine tool, comprising the following steps:
[0035] Step 1: Take the XZ plane of the machine tool coordinate system as the reference plane, keep the angle of the C rotation axis at 0 degrees, turn the B rotation axis, and keep the tool tip of the B rotation axis fixed relative to the reference point of the machine tool table, to obtain any Two control points P1(X1,0,Z1,B1,0) and P2(X2,0,Z2,B2,0) with different angles;
[0036] Step 2: Calculate the pendulum length of the B rotation axis through the coordinate values of control points P1 and P2:
[0037] According to the formula: B_zoffset=(SIN_B1B2*(X2-X1)+COS_B1B2*(Z2-Z1)) /
[0038] (SIN_B1B2*SIN_B1B2+COS_B1B2*COS_B1B2);
[0039] B_yoffset = 0;
[0040] B_xoffset=((X2-X1)-SIN_B1B2*B_z...
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The invention discloses a method for measuring the swing length of a five-axis linkage numerical control machine tool. The method comprises the steps of: obtaining any two control points P1 and P2 indifferent angles by taking the XZ plane of the coordinate system of the machine tool as a reference plane, keeping the angle of a C rotation axis in 0 DEG, rotating a B rotation axis and enabling thetool nose of the B rotation axis to be fixed corresponding to the reference point of the workbench of the machine tool, and calculating the swing length of the B rotation axis; and, obtaining any twocontrol points P3 and P4 in different angles by taking the XY plane of the coordinate system of the machine tool as a reference plane, keeping the angle of the B rotation axis in 0 DEG, rotating a C rotation axis and enabling the tool nose of the C rotation axis to be fixed corresponding to the reference point of the workbench of the machine tool, calculating the total swing length, and then, calculating the swing length of the C rotation axis according to the total swing length and the swing length of the B rotation axis. According to the method in the invention, the swing axis length of thefive-axis linkage numerical control machine tool is calculated through a geometric position coordinate variation relationship; the operation is simple; the calculation difficulty is low; and measurement is precise.
Description
technical field [0001] The invention relates to the technical field of numerical control machining, and more specifically relates to a method for measuring the pendulum length of a five-axis linkage numerical control machine tool. Background technique [0002] In the five-axis linkage CNC machine tool with swing head, in order to realize the precise motion control of the double swing head, it is necessary to accurately measure the swing length of the swing head. If there is an error in the measurement of the swing length, it will directly affect the machining accuracy. Therefore, high-precision pendulum length measurement is the basis for realizing high-precision five-axis machining. [0003] At present, the pendulum length of the pendulum head is generally obtained directly from the mechanical design parameters, or by direct measurement of the pendulum length. The numerical error obtained by this measurement method is relatively large, which has a great impact on precision ...
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IPC IPC(8): G05B19/401
Inventor 张锦源甘玉轩万军杨邱民
Owner GUANGZHOU CORESING ROBOT TECH CO LTD