SU702235A1 - Linear motion transducer - Google Patents

Description

I

The invention relates to a control measuring technique and can be used for measuring Small and large linear measurements and is intended primarily for use in combination with digital recording and control devices.

A known linear displacement transducer for machine tools, consisting of a magnetic head and a scale bar of non-magnetic material with a ferromagnetic coating, on which magnetic harmonics are applied by magnetic recording.

The disadvantages of the converter are that the level of the read signal is very small, the design requires the use of a special modulation magnetic head as a reader, which, at low levels of the read signal, is very sensitive to external magnetic fields. The system requires careful screening. demanding clean and

environmental humidity, has low reliability.

The closest to the technical essence of the invention is a linear displacement transducer, containing an armature with an excitation winding serving to form magnetic marks, and a reading head mounted for movement along a ruler 2j.

A disadvantage of the known displacement transducer is the low reliability and complexity of the manufacturing technology in the construction of a design that requires a high resolution resolution.

The aim of the invention is to improve the reliability of the converter / simplification of manufacturing technology.

This goal is achieved due to the fact that the converter is equipped with ferromagnetic plates along the set of scale marks, the excitation winding is designed as an electrically conductive corrugated plate placed along the ruler, and the ferromagnetic plates are installed parallel to each other on both sides of the electrically conductive plate in its grooves. FIG. 1 shows a linear displacement transducer circuit; in fig. 2 scale ruler. The converter contains a scale ruler 1 and a readout magnetic head 2, the field winding is made in the form of an electrically conductive corrugated plate 3 placed along line 1. 1.: In the grooves of the corrugated plate on both sides there are parallel to each other ferromagtic plate 4, the number of which is equal to tags. The plate pack is pressed with glue, the work surface is ground. The converter works in the following manner. When voltage is applied to the winding between the ends of the ferromagnetic plates 4. Electromagnetic tags are formed, which are fixed by the magnetic head 2 as it moves along the ruler. . 5.4 The converter ensures reliable operation when the external conditions change and the simplicity of its manufacturing technology. The formula of the invention A linear displacement transducer comprising a ruler with an excitation winding serving to form magnetic marks, and a 1 & magnetic head mounted for movement along the ruler, characterized in that, in order to improve the reliability of the transducer and simplify its manufacturing technology, ferromagnetic plates according to the number of scale marks, the excitation winding is complete in the form of an electric, conducting corrugated plate placed along a ruler, and ferromagnetic plates The plates are installed parallel to each other on both sides of the electrically conductive plate in its outlets. Sources of information taken 130 attention in the examination 1. USSR author's certificate number 114829, cl. G 01 B 5/02, 1957, 2. US patent number 2915721, CL. 336-69, 1959 (prototype).

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