SU1392343A1 - Size-measuring device - Google Patents

Abstract

This invention relates to a measurement technique. The aim of the invention is to improve the accuracy and performance of the measurement. The goal is achieved by the fact that the device contains a measuring head, which includes a housing 1, a measuring probe with a contact tip 6 and a shifting transducer for the probe tip 6, as well as a measuring unit 13 connected to the converter and a speed control unit 14. Cas Moment Sensor

Description

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Yi is made in the form of a Hall element 9 fixed in a housing and connected with a speed control unit 14: a electric drive and a permanent magnet 1o mounted on the end of the contact tip with the ability to move by means of an adjusting screw 11. At the moment of contact of the tip 6 of the measured surface it stops its movement, while the measuring head continues its movement. Approaching

the magnet 10 to the element 9 Hall is triggered sensor. The speed of the measuring head is reduced to the measuring speed. When the adjusting screw 1 is pressed into the bottom of the hole of the screw 8, the diaphragm 2 will deform and be fixed by the strainer 3. The latter will issue information to the measuring unit 13, which will fix the result and simultaneously stop the electric motor 12. 1 Il,

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The invention relates to a measuring technique and can be used in coordinate measuring machines.

: The purpose of the invention is to improve the accuracy and productivity of measurement: The drawing shows a diagram of the proposed device.

The device contains a measuring head comprising a housing 1 placed in the housing 1 a measuring transducer made in the form of a diaphragm 2 with strain gauges 3, a cone; tact 1 st probe consisting of the body 4; And a nut 5 fixed at one end in the measuring transform The replaceable tip 6, spring-loaded with an elastic element 7, is installed in the contact probe with the possibility of axial movement.

A screw 8 with a blind hole is installed in the housing 4 of the contact probe. The sensor of the moment of contact by the tip 6 of the probe of the measured surface is made on the Hall element 9 fixed to the end of the screw 8 and the magnet 10 fixed by means of the adjusting screw 11. The housing 1 of the measuring head is connected to the electric motor 1 2. The strain gages 3 are connected to unit 13 and metering, and Hall element 9 with unit 14 for controlling the speed of the electric drive. Measurement unit 13 is connected to electric motors 12.

The device works as follows.

With the help of electric motors 12 body 1 of the measuring head with

the feed speed moves in the direction of the measured surface. At the moment of contact of the measured surface, the probe tip 6 stops its

movement while the measuring head continues its movement. As the magnet 10 approaches the Hall element 9, a sensor is triggered, which is detected by the speed control unit 14 of the electric drive.

The speed control unit 14 of the electric drive reduces the speed of supplying the electric motors 12 to the measurement speed at which the head moves to the measured surface until the adjusting screw 11 rests on the bottom of the screw hole 8, which causes deformation of the diaphragm 2 fixed by the strain gauges 3. The latter information on measuring unit 13, which will record the result and simultaneously stop the electric motor 12. To measure the subsequent point, the head is retracted to its original position, with the result that the elastic element 7 ozvraschaet tip 6 to the original position and

measurement is repeated. The screws 8 and 11 adjust to the magnitude of the strokes of the tip 6.

Claims (1)

Invention Formula A device for measuring dimensions, comprising a measuring head, comprising a housing, a measuring probe placed in it with a contact tip and a transducer 313923434 neither the tip of the probe, as well as the one in the form of a Hall element, a block of measured in the housing and connected rhenium and electric drive with a regulator unit to the unit for controlling the speed of electrization of the speed of movement of the heads of the five actuator, and the permanent magnet, Ki, characterized in that, mounted at the end of the contact in order to increase accuracy and with an adjustable tip measurement, it is supplied with its initial axial position but the sensor of the moment of contact, performed by means of the adjusting screw.