JP-7856723-B2 - 5-axis spatial precision measuring jig

JP7856723B2JP 7856723 B2JP7856723 B2JP 7856723B2JP-7856723-B2

Inventors

黄郁翔
許晉謀
楊宗育

Assignees

財團法人工業技術研究院

Dates

Publication Date: 20260511
Application Date: 20241008
Priority Date: 20240529

Claims (5)

Including the main unit and the base, The main body has a first side, a second side, and a third side, the first side being parallel to the first direction and having opposing ends, the second side and the third side being connected to the opposing ends of the first side including the chamfered portion if there is one , there is a first clamping angle between the first side and the second side, there is a second clamping angle between the first side and the third side, there is a third clamping angle between the second side and the third side, the first and second clamping angles are both 45 degrees, and the third clamping angle is 90 degrees, and the first surface of the main body is provided with at least three mounting holes, the center connection lines of the at least three mounting holes are parallel to the first direction and the distance between the centers of two adjacent mounting holes is the same, A five-axis spatial precision measuring jig, wherein the main body is mounted on the base so as to be rotatable on an axis, the axis of rotation of the main body is parallel to the third direction, and the first direction and the third direction are perpendicular to each other.
The five-axis spatial accuracy measuring jig according to claim 1, wherein the axial directions of at least three of the mounting holes are all parallel to the third direction.
The five-axis spatial accuracy measuring jig according to claim 1, wherein a column is provided on the upper part of the base, and the main body is pivotally attached to the column.
The five-axis spatial accuracy measuring jig according to claim 1, wherein a plurality of positioning holes are provided at the bottom of the base.
The five-axis spatial accuracy measuring jig according to claim 1, wherein the first surface is perpendicular to the plane formed by the first direction and the third direction, and the periphery of the first surface is adjacent to the first side, the second side, and the third side.

Description

This invention relates to the field of machining technology, and more particularly to a five-axis spatial accuracy measuring jig that enables rapid precision measurement and correction work on a five-axis machine tool. Driven by the global energy transition and the demand for high-precision 5-axis machining from the aerospace industry, manufacturers are investing in the development of 5-axis machining centers to reduce labor costs and improve the accuracy of curved surface machining. These centers clamp workpieces in a single step, completing complex cutting processes, and utilize spatial geometric calculations for interpolation, enabling high-precision and high-quality machining of products such as turbine blades and artificial joints, thereby achieving optimal performance requirements. Conventional 5-axis precision measurement methods require the integration of expensive equipment such as laser interferometers, large straight gauges, square gauges combined with pointer scales, and circle testers. This method involves measuring 43 error items in total, including 21 errors for the linear axes and 22 errors for the two rotating axes. While all measurements, precision corrections, and adjustments must be completed, the process is complex and time-consuming. Furthermore, when measuring a 5-axis machine tool using a precision measuring jig, it is necessary to move the jig repeatedly depending on the difference in the measurement item, which is time-consuming and time-consuming. Moreover, measurement errors due to differences in the operator's experience and method are unavoidable. This is an explanatory diagram of the three-dimensional structure of one embodiment of the present invention.This is an explanatory diagram showing a combination of a sphere and a three-dimensional structure from a different viewing angle of the embodiment shown in Figure 1.This is a front view diagram illustrating the embodiment shown in Figure 1.This is an explanatory diagram showing the right-side view structure of the embodiment in Figure 1 combined with a sphere.Figure 1 is a structural diagram illustrating the main body of the embodiment, which is pivotally attached to the base.This is an explanatory diagram of the structure of the workbench surface fixed to the 5-axis machine tool in the embodiment shown in Figure 1.This is an explanatory diagram illustrating the application of the three-axis straightness measurement of the workbench surface in the embodiment shown in Figure 1.This is an explanatory diagram illustrating the application of the embodiment shown in Figure 1 to the measurement of the three-axis perpendicularity of the workbench surface.This is an explanatory diagram illustrating the application of the three-axis positioning accuracy measurement of the workbench surface in the embodiment shown in Figure 1.This is an explanatory diagram illustrating the application of the A/C2 rotation axis error term of the workbench surface in the embodiment shown in Figure 1 to the measurement of the error term.This is a front view diagram illustrating the combination of spheres in different embodiments.This is a front view diagram illustrating the combination of spheres in different embodiments.This is a front view diagram illustrating the combination of spheres in different embodiments.This is a front view diagram illustrating the combination of spheres in different embodiments. The five-axis spatial accuracy measuring jig 100 of the present invention, shown in Figures 1 to 4, includes, for example, a main body 10 and a base 30. The material of the main body 10 is a material with a low coefficient of expansion, such as granite. Referring to Figures 1 to 4, the main body 10 is, for example, a triangular block having a first side 11, a second side 12, and a third side 13, but the present invention is not limited to this. All three sides are flat surfaces. The first side 11 is parallel to the first direction F1 and has opposing ends. The second side 12 and the third side 13 are both connected to both ends of the first side 11, respectively. Referring to Figure 3, there is a first angle θ1 between the first side 11 and the second side 12. There is a second angle θ2 between the first side 11 and the third side 13. There is a third angle θ3 between the second side 12 and the third side 13. Both the first angle θ1 and the second angle θ2 are 45 degrees, and the third angle θ3 is 90 degrees. This gives the main body 10 the outline of a right triangle. Referring to Figures 1, 3, and 4, the main body 10 has a first surface 16, which is parallel to the plane formed by the first direction F1 and the second direction F2, and the first direction F1 and the second direction F2 are perpendicular to each other. The periphery of the first surface 16 is adjacent to the first side 11, the second side 12, and the third side 13, forming a right triangle. Furthermore, while the adjacent edges of the first side 11 and the second side 12, the adjacent e