High precision flatness detection device having reading convenience

[0023] Example 1:

[0024] In this embodiment, a high-precision flatness detection device that is convenient for reading includes a support provided with a reference surface 11, a reference member 2 provided on the support 1 which is always vertical by gravity, and several The base 1 is used to support the support rod 3 whose bottom end is on the same plane; the reference member 2 is provided with a scale for feedback of flatness based on the reference surface 11. Place the present invention on the ground to be tested so that the support rods 3 are all in contact with the ground. Since the bottom ends of the support rods 3 are on the same plane, the plane where the bottom ends of the support rods 3 are located is parallel to the ground to be tested. The reference surface 11 is inclined at a certain angle according to the degree of inclination of the ground. Since the reference piece 2 is always vertical, it can be judged whether the ground is inclined by the angle change between the

[0025] Example 2:

[0026] Such as figure 1 As shown, on the basis of the foregoing embodiment, in this embodiment, the reference member 2 is a spherical member with a mass distribution of lower weight and lighter upper portion, a rotationally symmetrical axis, and free rotation relative to the support 1. In this way, gravity can be used to keep the reference member 2 always vertical, and the rotational symmetry axis of the reference member 2 can be used as a reference line to establish a unified coordinate system, thereby reducing measurement errors and improving measurement accuracy. In this embodiment, all The aforementioned rotational symmetry axis is the vertical axis of the reference member 2 in a stable state. Designing the reference member 2 to be spherical can also make the relative rotation of the reference member 2 and the support 1 more convenient, reduce the influence of the support 1 on the position accuracy of the reference member 2 and help ensure the measurement acc

[0027] Example 3:

[0028] Such as Figure 4 As shown, on the basis of the above-mentioned embodiment, in this embodiment, the diameter of the spherical groove is larger than the diameter of the reference member 2, and a plurality of balls 7 are provided in the spherical groove. The balls 7 are uniformly distributed in the spherical groove in a ring shape. In this way, the reference member 2 can be supported by the ball 7, thereby changing the sliding friction of the reference member 2 into rolling friction, which is beneficial to reduce the wear of the reference member 2, making the relative rotation of the reference member 2 more convenient and beneficial to shortening Waiting for the time required for the stable placement of the present invention, and can effectively prevent the shape accuracy of the reference member 2 from being affected, resulting in a decrease in the accuracy of the present invention. In this embodiment, other undescribed parts are the same as the content of