What should be paid attention to in the production of straightness error curve of guide rail?

 What should be paid attention to in the production of straightness error curve of guide rail? Shared by the CNC lathe machine manufacturer China.

Answer: when making the straightness error curve of the guide rail, the scale of the curve chart should be chosen to be moderate. If the scale is too large, it is inconvenient to make and correct. Size is too small, in the calculation of guide straightness error may be prohibited. Recommended in measurement, small machine when. 0 - x axis length of 200mm, long bed 200~400mm, expertise of the machine tool should not exceed 500mm. Once the length of the x axis is determined, the scale of the x axis can also be determined. In practice, the 0-x axis represents the interval of the iron pad of the level, which can be made according to 1:5 to 1:10, that is, the measurement interval of 200mm is indicated by 40 or 20mm. Z axis and y axis represent the accuracy error of the guide rail, which can be indicated by the coordinates of l~2.5mm from 1000∶1 to 2500∶1, that is, accuracy error l mu m. Extra fine machine tool guide rail (usually shorter), you can take 5000∶1, that is, 1 micron error with 5mm to indicate.

For example, when measuring the guide rail of a certain machine tool, the length is 1000mm, the specification of the level used is 0.02/1000, and the length of the iron pad of the level is 200mm. When the level is placed on the guide plane at 0~200mm section, the reading value is zero. When the level moves forward to the guide plane at 200~400mm section successively, the bubble in the level moves forward one grid, which is positive value, indicating that the guide plane in this section is skewed 0.004mm upward. When the level moves to the 400-600mm section of the guide plane, if the bubble of the level moves back and returns to the zero position, it indicates that the guide plane of this section is parallel to the guide plane of the 0-200mm section. Since the 200~400mm guide rail faces upward aslant, the guide plane of the 0~200mm section is parallel to that of the 400~600mm section, but it is not in the same plane. When the level moves to the 600-800mm section of the guide plane, the bubble in the level moves back one grid, which is a negative value, indicating that the guide plane of this section is downward skewed. In the end, the 800-1000mm level returns to zero again, and the measurement continues until the measurement of the entire guide rail stops. The curve formed by each line segment is called the guide rail straightness error curve (or tool movement curve).

That's all for the sharing, thanks for your reading, and we also supply Bed Type Milling machine for sale, if you have any demand for our products, just feel free to contact us.