Touch probe, three-coordinate measuring machine and tool setting instrument

Abstract

The invention provides a contact type measuring head which adopts a ball column structure or a spring piece as a supporting reset mode, wherein the grating or the hall device is used as a detection device for displacement information (including the direction and the size of the displacement of the detection end), so that the defect that an existing trigger type measuring head cannot acquire the contact direction is overcome, error compensation can be carried out more accurately, anisotropy of the trigger type measuring head is improved, and the measurement precision is improved. The contact type measuring head is simple in structure, small in quality., small in size, good in dynamic performance, and is suitable for high-precision rapid measurement.

Description

technical field [0001] The invention relates to the technical field of detection and processing, in particular to a contact contact, a three-coordinate measuring machine and a tool setting instrument using the contact. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] The current three-coordinate measuring machine can not only complete various complex measurements under the control of the computer, but also realize the control of processing by exchanging information with the CNC machine tool, and can also realize reverse engineering based on the measurement data. It is a modern industrial inspection and quality control tool. Indispensable general-purpose geometric quantity measuring instrument. The three-coordinate measuring machine picks up the signal through the probe. ...

AI Technical Summary

Problems solved by technology

[0004] The trigger probe currently used on coordinate measuring machines is equivalent to a switch. It does not monitor the position of the end of the stylus. In order to ensure accuracy and reliability, it needs to have high repeatability, that is, before and after triggering, the position of the end Can try to remain unchanged

In addition, the trigger probe does not provide the contact direction, so it is impossible to accurately compensate the ball radius of the probe, which limits the measurement accuracy of the touch probe

At the same time, the currently used analog probe has complex structure, relatively large size and quality, poor dynamic performance, and is expensive and not easy to use widely.

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