SU318328A1 - A reading device for measuring devices, such as micrometers - Google Patents

Description

(54) COUNTING

The invention relates to the field of engineering, more specifically to measurement technology.

A reading device for measuring instruments is known, comprising a housing, a rotating drum with {mixed inside with the possibility of translational and rotational movement by a micrometer screw, rough and precise reading counters with a readout and a ratchet mechanism.

The scales in this device are located in different planes, and the micrometer screw is not unloaded from external forces, therefore it does not produce an accurate enough reading.

In order to increase the accuracy of the reading, the proposed device is equipped with a Rolamate mechanism, a kinematic linking micrometer screw with an accurate reading scale, and both scales are located in the same plane relative to the reading risks and are kinematically related to each other.

FIG. 1 shows the proposed device in section ;, FIG. 2 - then W4, view along arrow A in FIG. one; in fig. 3 4 section along BB in FIG. 1. The device includes a housing 1, a micro metric screw 2, a free rotation of the hub 3 with a precise scale 4, a Rolamite mechanism consisting of a spring tape 5 fixed 4, and rollers 6 a rough count 7 with a reference figure 8 The coarse and accurate reading scales are kinematically related between each other.

The device works as follows. When the knob 9 is rotated, kinematically transmitted abruptly look for a moment on the Glamayte mechanism tape, which holds the micrometer screw. Warp-j | Subscribe, the Rolamite mechanism branches provide a micrometric turn. .

Since the place of pinching the tape has a significant effect on the operation of the Roland Mait mechanism, for its more accurate operation parallel to the branch. MEASURING DEVICES FOR MEASURING INSTRUMENTS, EG MICROMETERS

the U plates are laid; The symmetrical arrangement of the plates ensures the backlash-free connection of the micrometric screw with the reference dial;

The accurate reference scale is kinematically related to the coarse reference scale. This; the connection is made as follows: the precise reading scale is rigidly connected to the hub, and its rotation moves the pin guide 11 placed in the slot of the nut 12, which pushes the ring 13 forward, with the pin 14 moving with the lower end in the straight groove of the housing and 1 turning at a certain angle, the sleeve | 15, bearing on itself a scale of rough counting.

When returning the coarse reading scale to its original position, t, e, is at the initial

which position, the spring 16 provides a force closure of the nut 12 and the ring 13,

Claims (1)

Invention Formula A readout device to measure /: instruments, for example micrometers, comprising a housing, a rotating drum with a micrometric device, which is placed inside with possible translational and rotational movement, a coarse and accurate reading scale with a reading risk, a ratchet mechanism, characterized in that increase the accuracy of the reference, it is equipped with a Rolamite mechanism, with a pinning screw that connects the micrometer screw to the scale of the exact reference, and both scales are located in the same plane relative to the measured risks and linked together. FIG. J