SU1703951A1 - Device for measurement of center-to-center distance between shafts - Google Patents

Abstract

The invention relates to a measurement technique and can be used in mechanical engineering to control center-to-center distances. The invention makes it possible to improve the measurement accuracy by means of a reliable base. For this purpose, two prisms 3 and 4 are installed on the housing 1 in the same bisectoral plane 2, for locating the respective shafts. A groove is made on one of the faces of each prism. Two carriages 13 and 14 are fixed on housing 1 by means of flat springs 15–22, on which probes 5, 6 with covering contact surfaces 7, 8 and probes 8, 10 with covering contact surfaces 11, 12 are placed in pairs. In the groove of the prism 3 A probe 5 is placed, and a probe 10 is in the slot of the prism 4. The angle of inclination ft of the surrounding contact surfaces is equal to the angle of inclination of the 'covered contact surfaces. The bisector planes of these angles are aligned and perpendicular to the bisector plane 2 of prisms 3 and 4. Indicator 23 is installed between carriages 13 and 14. After basing the respective shafts on prisms 3 and 4, additional probes 5 and 6, 8 and 10 are based on the shafts due to flat springs 15-22, as well as covering 7, 8 and enveloping 11,12 inclined contact surfaces. In this case, the movement of the carriages 13 and 14 across the bisector plane 2 is registered by the indicator 23. 1 Il. I about WITH WITH

Description

The invention relates to a measurement technique and can be used in mechanical engineering to control center-to-center distances.

The aim of the invention is to improve the measurement accuracy due to a reliable base.

The drawing shows the proposed device, a General view.

The device comprises a housing 1 installed in it in one bisector plane 2 two prisms 3 and 4, designed

for locating the respective shafts, probes 5, 6 with female contact surfaces 7, 8 and probes 9, 10 with male contact surfaces 11, 12 intended to add additional probes to the shafts, carriages 13 and 14, plane-parallel springs 15-22, with the help of which the carriage 13 with paired probes 9, 10 and the carriage 14 with paired probes 5 and 6 are suspended from the housing 1, and the indicator 23 installed between the carriages 13.and 14. On one of the faces of each prism is xI

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Pen groove. A probe 5 is placed in the groove of the prism 3, and a probe 10 is placed in the groove of the prism 4. The angle of inclination ft of the surrounding contact surfaces 7, 8 is equal to the angle of inclination o. covered contact surfaces 11,12. The bisector planes of these angles are aligned and perpendicular to the bisector plane 2 of prisms 3 and 4.

The device works as follows.

Before measurement, the device is adjusted by reference. When measuring, an object with its shafts is mounted on prisms 3 and 4, i.e. oriented with respect to the device body 1, and paired probes 5, 6 with surrounding contact surfaces 7, 8 and paired probes 9, 10 with covered contact surfaces 11 and 12 self-aligning along the shafts due to flat springs 15-22. The deviation of the center-to-center distance between the shafts from the tuned one will lead to relative movements of the carriages 13 and 14 along and across the bisector plane 2. The movements of the carriages 13 and 14 across the bisector plane 2 are recorded by the indicator 23. At the same time, the deviations of the diameters of the shafts from the mood Nogo values do not affect the result of measurement of the distance between centers as these deviations result in either a simultaneous displacement equal to one side of the carriages 13 and 14 in a direction perpendicular to the bisector plane 2. These offset will

are equal, because the angle a between the covered contact surfaces 11 and 12 is equal to the angle ft between the enveloping surfaces 7 and 8, and the bisector planes of these angles are aligned and perpendicular to the bisector plane 2 of prisms 3 and 4. Thus, due to reliable base increases measurement accuracy.

Claims (1)

Invention Formula A device for measuring the center-to-center distance between the shafts, comprising a body, two prisms placed in it in one bisector plane, designed to base the corresponding bars, and an indicator, characterized in that, in order to improve accuracy by means of a reliable base, on one of the faces of each the prism has a groove, the device is equipped with two carriages fixed to the body by means of flat springs, placed in pairs on the corresponding carriages by four probes with contact surfaces, constant for the additional probes basing on the shafts, one of each pair of probes placed in the corresponding groove of the prism, the angles of inclination of the contact surfaces of each pair of probes are equal to each other, the bisector plane of these corners and are aligned perpendicular bisector plane of the prism, and the indicator is placed between the carriages. eleven ten