SU998844A1 - Apparatus for measuring thickness and non-planeness of plate-type parts - Google Patents

Description

The invention relates to a linear measurement technique, namely, to means for measuring thickness and non-planarity.

Devices for measuring the thickness and non-flatness of parts such as plates are known, comprising a base, a movable holder for mounting a controlled object, guides for plane-parallel movement of holders, two opposed measuring transducers and a unit for recording measurement results 1,

The disadvantage of these devices in-. The incompleteness of the information received. These devices, while allowing the CKG to measure plate thickness and flatness deviation, do not allow the coordinate of the measurement point to be established (in the control plane) and the law of the distribution of deviations to be established.

Higher closest to the invention is a device for measuring, thickness and non-flatness of parts such as plates, comprising a base, a movable holder for mounting a counter-object of the object to be molded, guides for plane-parallel movement of the holder, two oppositely arranged

measuring transducers interacting with a controlled object, a unit for recording measurement results and a means of interpreting the obtained results. Guides for plane-parallel movement of the holder are made crosswise and are equipped with movement meters in all coordinates 2 j.

ten

A disadvantage of the known device is the low measurement accuracy of non-flatness, since plane-parallel motion guides, consisting of three different kinematic pairs, cannot be performed as precisely as guides, similar to those of a single kinematic pair.

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

The goal is achieved by the fact that in the device for measuring the thickness and non-flatness of parts such as plates containing a base, is movable,

25 is a holder for mounting a monitored object, guides for a flat parallel-side holder two opposedly located transducers interacting with.

Claims (2)

30 by the object being monitored, the recording unit of the measurement results and the means for decoding the obtained results, the guides of the plane-parallel movement of the holder are made in the form of two adjoining planes, one of which is placed on the base of the NII, the other on the mobile holder and the reference unit scales on the movable holder and two mutually perpendicular lines plotted on the base. In addition, the tool for decoding the obtained results was made in the form of a set of templates, one of which was made in the base form with two mutually perpendicular LIVES, and the other in the form of the holder was made transparent and with a circular scale on the periphery equivalent to the dial scale rolling holder, and in the middle part - with a Cartesian coordinate grid. Fig. 1 shows a device for measuring the thickness and non-flatness of details such as the plate of Fig. 2, the same, top view; Fig. 3, a set of templates for decoding measurement results. A device for measuring -thickness and non-flatness of parts (Figures 1 and 2 contains a base 1, the upper surface 2 of which is designed as a precise plane and serves as a guide for moving the movable holder 3. The supporting (, lower) plane 4 of the movable holder also performs | on the exact and interacts with the Directional plane of the base. The holder's base unit is located on the holder's base, made, for example, for round plates in the form of three supporting platforms 5 (only one platform and three radios lugs b (remote position has only one stop}, in the central part of the base there are holes in which a non-contact measuring transducer 7 is installed. Opposite to the first one there is a second measuring transducer 8, which is fixed to the folding bracket 9, which allows noting both the sum of the readings of both of the above-mentioned converters and the readings of each of them. Two mutually perpendicular risks 11 and 12 are applied to the base (Fig. 2) 1, which are indications for counting coordinates in the base plane. On the movable holder (FIG. 1, a circular scale 13 is applied. The means for deciphering measurement results used as part of a device for measuring thickness and flatness, contains a base template 14 (FIG. 3) with Hat risks mutually perpendicular to 15 and 16 , and a transparent movable pattern 17, on the periphery a circular scale 18 is applied, equivalent to the holder’s circular scale, and in the middle part a Cartesian coordinate grid 19. In necessary cases, for example, when inspecting small objects, the transparent movable pattern can be The device for measuring the thickness of the ILIL and non-flatness works as follows: The controlled plate is installed in the movable holder 3, and the latter with its reference plane 4 is installed on the guide plane 2 of the base 1 (retract the pre-folding arm 9 with the measuring transducer 8). The measuring transducer 8, placing it opposite to the measuring transducer 7. At some point of the controlled object, for example, in the center, zero setting is performed. combat converters. Then, the movable holder is moved along a predetermined trajectory and in the set; -points mark the readings of the measuring transducers with the help of block 10 registration. Due to the high accuracy of the guides (plane-plane), measurement errors along the coordinate are minimal: Each measurement also indicates the readings on a circular scale 13, the indicators are mutually perpendicular, and (the artistic risks 11 and 12, Two readings on a scale 13 unambiguously determine the X and Y coordinates of the measurement point, but the transformation of coordinates from one system to another without the use of technical tools is difficult. The coordinate transformation is performed using a set of templates: base 14 and transparent rolling 17. Circular The scale 18 is set so that the readings at the intersection points of the outer contour of the movable pattern C. The mutually perpendicular risks 15 and 16 correspond to the readings during the measurement.Then, the intersection point of the said lines in the grid system 19. plotted on the movable pattern will be have a measuring point coordinate. To reduce the registration error, the pattern can be made on an enlarged scale. The proposed device will improve the measurement accuracy. Claim 1, Device for measuring the thickness and non-flatness of parts such as plates, -containing base, movable holder for installing a controlled object, guides for plane-moving the holder, two positioned transducers interacting with a controlled object, a unit for recording measurement results and means for decoding the obtained results, characterized in that, in order to increase the measurement accuracy, the plane-parallel variable guides scheni holder made in the form of two conjugated ploskoetey, one of which is located on the base, other - on a movable carrier and coordinate frame assembly is formed as a torsion traction scale on a movable holder and two mutually perpen Dikulja molecular lines deposited on the substrate. 2. The device according to claim 1, about tl and h; Now that the means for decoding the obtained results is made in the form of a set of templates, one of them is made according to the shape of the base with two mutually perpendicular lines, and the other on the holder is made transparent and p with a circular scale on the periphery, equivalent circular scale of the movable holder, and in the middle part - with de, kart coordinate grid. Sources of information taken into account during the examination 1 .. Prospectus of AOE Ccapcaration USA, mod., G 33 / G OZZT, 1975., 2. Machine tools and tools, 1961, No. 5, p. 34-35, (prototype Ji 15