SU1439395A1 - Device for checking nonsquareness of channel axis to end face - Google Patents

Abstract

The invention relates to a measurement technique and can be used to measure the non-perpendicularity of a channel axis to an end face. The purpose of the invention is to expand the range of monitored products and improve measurement accuracy by adjusting the measuring heads to the appropriate size of the monitored products and eliminating the influence of the shape of the end on the measurement result of non-perpendicularity. Measuring slips 6 and 7 are moved along and perpendicularly to the base before installing the floats of the RP-10 and P in the middle position with the reference product 13. The deviation in the readings of the rotameters during installation instead of the reference test product reflects the non-perpendicularity of the channel axis in the test product to his butt. 2 Il.

Description

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The invention relates to a measuring technique and can be used to measure the non-perpendicularity of a channel axis, for example, a waveguide to the base end of its flange,

The purpose of the invention is to expand the range of monitored products and ensure measurement accuracy.

Fig i shows a schematic diagram of the device; in fig. 2 is a measurement circuit.

Device To control the non-perpendicularity of the channel axis to the end, the base 1 contains a mandrel 2 with a bearing 3, a magnetic suspension 4 and a drive (not shown) of the rotation of the mandrel, measuring heads 5 with measuring nozzles 6 and 7 made with moving parallel to and perpendicular to the axis of the mandrel, directed from the magnetic suspension 4 and parallel to the axis of the mandrel, gauges 8 and 9 move nozzles 6 and 7, respectively, rotameters 10 and P, and a calibrated nozzle 2, through which It is a compressed air supply. The nozzles 6 and 7 of the rotameters 10 and P form a pneumatic measuring system ty.

For measurements, the device is adjusted according to the reference

At the same time, the nozzles 6 and 7 should be located in a plane perpendicular to the axis of rotation of the mandrel 2. The readings of the rotameters 10 and 11 should be the same, conventionally taken as zero, and their floats are approximately in the middle of the instrument case. Then, the readings of the meters 8 and 9 are set to zero. By moving the measuring heads 5 in the horizontal plane, the nozzles 6 and 7 are set to the required distance from the axis of rotation of the tested item 13.

After setting up the device, the controlled article 13 is installed on the mandrel 2. In the presence of non-perpendicularity (AOA line, fig. 2), the gaps between the end of the controlled product 13 and nozzles 6 and 7 change, and the floats of rotameters 10 and 11 deviate in different directions from accepted zero position. Rotation of the controlled article 13 together with oprank 1 determines the maximum oTKjronefine P {) melts. To determine

non-perpendicular values move one of the nozzles in the vertical plane until the readings of the rotameters 10 and 11 again become the same. The gauge associated with the displaceable nozzle will show the magnitude of the non-perpendicularity.

If there is a non-flatness of the end face of the part being monitored (BOA line, fig. 2), the floats of the rotameters 10 and 11 are also deflected by the same amount, since the total air flow through the rotameters remains unchanged. But due to the redistribution of air flow between the nozzles, the deviation is 5

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the heats will correspond to the BOB line (Fig. 2), which is parallel to the direct BHA. It follows from this that when measuring the non-perpendicularity of the axis of an axis relative to the base end, the non-planarity (line; exhaust gas, Fig. 2) of the base end does not affect the measurement accuracy, i.e. axis perpendicularity is measured relative to the adjacent plane. With separate air flow into the rotameters 10 and 11, it is difficult to determine the non-flatness of the base end.

If in the process of measuring floats, rotameters go beyond their shkal, then by moving the nozzles in a vertical plane, you can reduce or increase the gap between the nozzles and the end of the item being controlled and return them to the limits of the measurement scale. In this case, when determining the non-perpendicularity, the values of the displacement of the nozzles recorded by the gauges associated with them are taken into account.

The control of two nozzles directed from the magnetic suspension, connected to a source of compressed air through rotameters and a common calibrated nozzle, as well as the ability to change the gap between the nozzles and the product being monitored during the measurement process allows to expand the range of the products being monitored and improve the measurement accuracy.

Claims (1)

Invention Formula The D.Pa device controls the non-perpendicularity of the axis of the channel to the end, containing a clamping element with a drive for the rotation of an elemont around its axis and a pneumatic control system with two joint elements, so that expanding the range of monitored products and measuring accuracy, it is equipped with displacement meters - nozzles that are made to move in parallel and perpendicular to the axis of the clamping element, the base element is designed as a mandrel with a magnetic suspension, and directed from the magnetic suspension and are parallel to the axis of the frame KW Fie.2