SU1631248A1 - Vernier caliper - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to improve the measurement accuracy and expand the range of controlled objects. This is achieved by the fact that the rod is made of two half-bar 1 and 2, and the caliper is provided with extensions 7 placed between the half-bars and connected in series with coupling sleeves 8, made of thermal insulating material, and a turning-fixing unit 9, mounted on the half bar 2 and intended to rotate the sponge 5 relative to the axis of the rod and fixation, as well as the fact that the sponge 4 is made in the form of a conical tip located coaxially with the rod. Depending on the relative position of the surfaces to be monitored, with the help of the rotary-fixing unit 9, the sponge 5 is turned around the axis of the rod to the required angle and fixed. The caliper is guided to the measurement zone, the sponges 4 and 5 are set to the required value between them and, by the mutual position of the Vernier 6 and the scale 3, a controlled size is determined. When controlling the distance between parallel surfaces, a cone tip is installed on the half-bar I. 1 hp f-ly, 3 ill. yo

Description

The invention relates to measuring equipment and can be used to control linear dimensions in mechanical engineering.

The aim of the invention is to increase the accuracy of measurements and expand the range of controlled objects by performing a composite bar.

In Fig.1 - presents a caliper, General view; figure 2 is the same with the rotated movable leg; in Fig.3 - the same with a fixed sponge made in the form of a conical tip.

The caliper contains a bar made of two half-bars 1 and 2, a linear scale 3 applied on the half-bar 2, a fixed sponge 4 mounted on the half-bar I, and a movable sponge 5 with the nonius 6 applied on it, placed between the half-bar-20 1 and 2 extension cords 7 connected to each other and with half rods by means of couplings 8 made of heat-insulating material in order to exclude the influence of the heat of the hands of the controller on the measurement accuracy. Mounted on the half-bar 2, the rotary-locking unit 9 is designed to rotate the movable jaw 5 relative to the axis of the rod and fixation. If necessary, caused by the specifics 30 of the location of the controlled surfaces, the fixed jaw 4 is replaced with a conical tip 10.

The caliper works as follows. 35

When checking or marking out linear dimensions in one plane, depending on their values, between the half bars 1 and 2, using the couplings 8, the required number of extension cords 7 is installed, the caliper is brought to the measurement zone, the jaws 4 and 5 are set to the required size between them and in relation to vernier 6 and scale 3 determine the controlled size (see figure 1). When controlling dimensions in different planes, the sponge 5 is rotated around the axis of the rod by the required angle using the rotary 10 fixing unit 9 and its position is fixed (Fig. 2). When controlling the distance between parallel surfaces, a conical tip 10 is installed on the half-bar I (Fig. 3).

Claims (2)

Claim 1. A caliper containing a rod with a scale and a fixed sponge at the end and a frame with a second sponge and nonius, mounted on the rod with the possibility of movement along it and fixing, characterized in that, in order to increase the accuracy of measurements and expand the range of controlled objects, the rod is made a composite of two half-bars, and the caliper is equipped with extenders placed between the half-bars and connected in series with the help of couplings made of heat-insulating material, and rotary-fixing a knot mounted on one of the half-bars designed to rotate the corresponding jaw relative to the axis of the rod and fix it. 2. The caliper according to claim 1, with the fact that the stationary sponge is made in the form of a conical tip located coaxially with the bar. Tehred M. Morgenthal