High-precision conical hole test tool

Abstract

The invention discloses a high-precision conical hole test tool which comprises a fixed base. A cross beam is arranged on the fixed base. An adjusting arm is fixedly installed at the lower end of the center of the cross beam. A first measuring arm and a second measuring arm are fixedly installed at the two ends of the cross beam respectively. The adjusting arm, the first measuring arm and the second measuring arm stretch into a conical hole of a workpiece respectively. The bottom of the adjusting arm is tightly attached to the inner wall of the workpiece. The first measuring arm is provided with a first detection dial indicator, a second detection dial indicator and a third detection dial indicator. The second measuring arm is provided with a fourth detection dial indicator, a fifth detection dial indictor and a sixth detection dial indicator. The six detection dial indicators are of the completely identical structure. According to the high-precision conical hole test tool, the structural principle is simple, use is convenient, the hole diameter and conicity of the conical hole can be accurately measured, free adjustment can be achieved through the adopted adjusting arm, the adjusting precision is high, and detection quality can be improved.

Description

technical field [0001] The invention relates to the technical field of hole detection, in particular to a high-precision tapered hole inspection tool. Background technique [0002] For parts with tapered holes, when the hole diameter is less than f150, custom-made standard taper plug gauges are usually used for inspection tools, and the coloring method is used for inspection to check whether the contact with the large end of the tapered surface is greater than 70%. Then mark the diameter limit line on the standard plug gauge to detect the size of the taper hole. When the aperture is larger than f150, the above method will not work. The main reason is that the weight of the inspection tool is too large, and the contact area with the workpiece is too large, which makes the rotation difficult and the phenomenon of seizure occurs. Therefore, when detecting such large tapered holes, three-coordinate detection is generally used. At present, the detection process of the diameter ...

AI Technical Summary

Problems solved by technology

At present, for the detection of the diameter and taper of large tapered holes, the detection process is complicated, the accuracy is not high, and it is inconvenient to use

Images