Probe protection structure for machine tool on-line measurement and manufacturing method

Abstract

The invention provides a probe protection structure for machine tool on-line measurement and a manufacturing method. The probe protection structure is a connection base for connecting a probe with a launching unit, and is characterized in that the connection base is a metal piece combined a cone with a cylinder; two radially-crossed arc-shaped grooves are arranged on the cylinder of the connectionbase; and the two identical arc-shaped grooves are mounted axially in a cross manner. The manufacturing method uses the tri-dimensional fictitious technology and finite element analysis software, andis characterized by a simple algorithm for calculation in a manufacturing process; the specific size of the cross-shaped probe structure can be calculated when setting according to the algorithm; calculation of structural sizes of different materials can be realized after specific parameters of the used material are substituted. The core of the design lies in the axially-crossed structure of thearc-shaped groove of which the groove size plays a decisive role in stress limits of the metal base. The quality standard of the structure can ensure that the strength of one-way stress ranks only second to the damaged limit of the probe rod, and provides stress protection for radial stress in two directions and axial stress in one direction, thus ensuring that the protection structure has elasticdistortion quantity of life upper limit, and is within the probe safety factor.

Description

technical field [0001] The invention is a probe protection structure applied to the measurement purpose of a numerical control machining center and a manufacturing method of the structure. technical background [0002] With the increasing level of domestic manufacturing industry, unmanned automatic processing has gradually become an inevitable trend in future machine tool processing, so contact measuring probes will be widely used. The probe is the key part of the probe, which generally consists of a ruby ​​ball, a probe rod and a metal connection base. The ruby ​​measuring ball has high precision, high hardness and wear resistance. The probe rod is generally made of metal, ceramics and carbon fiber materials. The rod connection is strong, which is a customary philosophy in probe design. During the application of this type of probe, if there is misoperation or accidental scratching, the entire probe rod made of ceramic or carbon fiber will suffer catastrophic damage, while...

AI Technical Summary

Problems solved by technology

During the application of this type of probe, if there is misoperation or accidental scratching, the entire probe rod made of ceramic or carbon fiber will suffer catastrophic damage, while the metal probe rod can be impacted in radial measurement It can protect the probe part, but if the impact occurs on the axial part, it is easy to cause damage to the transmitting equipment connected to the probe, so that the more expensive probes need to be reordered, causing great losses

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