SU1670347A1 - Measuring head - Google Patents

Abstract

The invention relates to mechanical engineering, namely to technical measurements, and can be used to equip coordinate measuring machines and CNC machines. In the measuring head, comprising a housing 1, a measuring tip 2 with a supporting flange 3 and a spherical element 4, are placed evenly around the circumference between the bottom of the housing 1 and the flange 3 three pairs of main electrical contacts 5 connected in a series electric circuit and three pairs of additional contacts 6 placed evenly around the circumference between the spherical element 6 and the tapered bore at the end of the stem of the measuring tip 2 and connected in parallel to the circuit of the main contacts. 2 Il.

Description

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figure 1

The invention relates to mechanical engineering, namely to technical measurements, and can be used to equip coordinate and measuring machines and CNC machines.

The purpose of the invention is to improve the measurement accuracy.

Figure 1 shows a diagram of the measuring head; 2 is an electrical diagram.

The measuring head includes a housing 1 with a bottom placed in the housing 1 and measuring tip 2 spring-loaded to its bottom, made in the form of a hollow rod with a supporting flange 3 at one end and a basic conical hole at the other and a spherical element 4 placed in the basic hole rod, spring-loaded to it and intended to contact with the test piece, three pairs of main electrical contacts 5 (figure 2 K1, K2, short-circuit), evenly placed around the circumference between the bottom of the housing 1 and the flange 3 meter 3 and additional electrical contacts 6 whose contacts (in Fig. 2 are R1, R2, R3) are arranged evenly around the circumference, respectively, on the surfaces of the conical hole of the stem of measuring tip 2 and the spherical element 4, each pair of additional electrical contacts b is connected in parallel with the main contacts circuit 5.

The measuring head works as follows.

When the monitored part is touched by the spherical element 4 on top of the measuring tip 2, it moves relative to the housing 1, as a result of which at least one pair of electrical contacts

5 is disconnected, which causes a break in the series electrical circuit, in which three pairs of contacts 5 are connected, and the appearance of a touch signal, which is sent for further processing.

When the monitored part touches the spherical element 4, at the side, at least one pair of additional electrical contacts b opens, which leads to

Claims (1)

change the total resistance of the electric circuit, including a group of main contacts 5 and additional contacts 6, and the formation of a signal about the touch. Invention Formula A measuring head comprising a body housed therein and a measuring tip spring-loaded to its bottom, made in the form of a hollow rod with a supporting flange on its face facing the bottom end and the base hole on the other, and a spherical element placed in the base hole of the rod, spring-loaded to it and intended for contact with the test piece, and three pairs of electrical contacts, evenly placed around the circumference between the bottom of the housing and the stem flange of the measuring tip and connected in a series electric circuit, characterized in that. in order to improve measurement accuracy, the basic hole of the rod is made conical, the head is equipped with three pairs of additional electrical contacts, placed evenly around the circumference and in each pair, respectively, on the surface of the base hole and the spherical element of the measuring tip, each pair of additional electrical contacts connected in parallel with the main contacts circuit. Dolo / 1nig7e / bn / e KONL70K / 7 th / Main / e lvntah / nb / e ale # e # / g & FIG. Z