SU1605135A1 - Device for measuring inside diameter of parts - Google Patents

Abstract

This invention relates to a measurement technique. The aim of the invention is to improve the measurement accuracy and to extend the measurement range. The device contains a caliper 1, its centering unit, made in the form of two parallel racks 3 and 4, installed with the ability to interact along the forming hole of the measured part 2, the knife support 5 with the guide groove for mounting the caliper 1 and two L-shaped sliders on it 6 and 7, one ends of which are placed in the guide slots of the uprights 3 and 4, and the others in the slot of the support 5 and are spring-loaded. On posts 3 and 4, scales are plotted, and on sliders 6 and 7, there are indications of the distance from the face of part 2 to the section being measured. To install the indicator at specified angles along the circumference of the measuring hole, there is a protractor. When measuring, the support 5 is installed at a predetermined distance from the end of the measured hole, the centering unit is placed in the hole of part 2 and the nut gauge is mounted on the knife support 5. When the nut gauge is rotated on the support 5, a series of hole diameter measurements are made. 6 ill., Zp ff.

Description

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3 and A, installed with the possibility of interaction with the forming apertures of the measured part 2, the knife support 5 with a guide groove for mounting inside it a gauge 1 and two L-shaped sliders b and 7, one ends of which are placed in the guide grooves of the posts 3 and ,, and others - in the groove of the support 5 and spring. On racks 3 and + there are scales, and on sliders 6 and 7, the indicators are from the end of the part 2 to the measured

This invention relates to a measuring technique, in particular for measuring the internal diameter of deep holes in parts.

The aim of the invention is to improve the accuracy of measurement and the expansion of the measurement range by measuring holes of different diameters in different diametrical and axial sections.

None of figs. 1 shows the device. long longitudinal section, FIG. 2 - the same, top view; in fig. 3 is a sectional view in FIG. one; in fig. A - section-BB in FIG. 1, in FIG. 5 — view B in FIG. one; in fig. 6 -. a section of YYY in FIG. four.

A device for measuring the internal diameter of products contains an inside meter 1 and its centering unit on the measured part 2, made in the form of two racks 3 and with guide grooves, which are mounted on the end of the measured part and interact with its walls along the forming holes, knife support

5 with a guide groove and two G-shaped sliders 6 and 1, one ends of which are placed in the guide slots of the respective posts 3 and 4,

and the other ends are located oppositely in the guide groove of the support 5 and under the spring 8. For fixing the sliders 6 and 7 on the racks there are clamps 9, and for fixing them on the support 5 there are clamps 10. On the racks 3 and A along the scoring grooves applied scale 11, and on the sliders

6 and 7 are indications 12 of the distance from the end of the measured part to the measured diametrical section.

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section, for installing the indicator at a given angle along the circumference of the measured hole there is a protractor. In the measurement, the support 5 is installed at a predetermined distance from the end of the measured opening, the centering unit is placed in the opening of section 2 and installed. The caliper on the knife bearing: 5. When the caliper on bearing 5 is rotated, a series of measurements of the hole diameter is made. 1 hp f-ly, 6 ill.

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The supporting surface of the pillar 3 is cylindrical {FIG. 3) with a radius smaller than the radius of the smallest measurable aperture of the part 2. And the supporting surface of the stand k is made flat.

The device's protractor is made in the form of an L-shaped strap 13 which is fixed at one end to the end of the pillar 3 perpendicular to its axis, and to the other has a triangular protrusion 1L which interacts with the caliper 1 and the stretching thread 15, for example, a rubber cord, one end of which is fixed on the strap 13 in the place of its attachment with the rack-3 (point E in Fig. 2), and the other is located in. the longitudinal groove 1b of the bar is movable therein, and a scale 17 is applied along the groove to read the angles on the face of part 2 from 0 to 90 °.

The device works as follows.

At the beginning, the device is adjusted to measure the diameter of the hole in a given section of the part. To do this, latch 9 on racks 3 and loosen the sliders B and 7 alternately in the direction of the racks, set the given size on the scales 11. Then the sliders 6 and 7 fix on the racks 3 and the fixer; respectively 9. Then clamps loosen 10 on the support 5 and move the sliders 6 and 7 together with the uprights 3 and along the support, compressing the spring 8, and then introducing the centering unit into the measured hole of the part 2 in such a position until the stops rest in the end of the part, while springing

on 8 spreads the sliders 7 and b up to the stop of the ZiL racks, the surface of the hole of the part 2, by making the support surface of the rack 3 cylindrical, and the supporting surface

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strut t a flat centering of the node occurs along three lines in the 0-0 symmetry plane of the hole being measured (Fig. 2). After that, the protractor 1 is installed on the knife support 5 and the diameter of the hole is measured at a given distance 1 from the end face of the part 2. Turning the caliper on the support 5, the diameter is measured at different points on the surface.

When measuring d values in different axial sections located at a certain angle, angles are made at the end of measured part 2 using a protractor. To do this, move (Fig. 2) the end of the stretch. strands 15 along the groove 16 and stop it on the scale at the position of the desired angle f, which at the end of the measured part 2 is marked with a point about where the strand 13 is attached with the circumference of the hole being measured. The intersection of the side M-M of the triangular protrusion I on the bar 13 with the circumference of the hole being measured at the point o corresponds to an angle equal to 3K. When marking the entire circumference, the holes sequentially reset the centering unit through 90 ° and make the same markings of the corners, and when measuring the diameter of the hole, the caliper 1 is set opposite the corresponding points of the bore mark.

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Claims (2)

1. A device for measuring the internal diameter of parts, comprising an inside gage and a centering assembly thereof, similar to what. ten 20 25 thirty in order to increase the measurement accuracy and expand the measurement range by measuring holes of different diameters in different diametrical and axial sections, the centering unit is made in the form of two parallel racks with guide grooves installed with the possibility of interaction with the surface of the hole being measured, a knife support with a guide groove for mounting an inside gauge on it, located in the plane of the racks perpee, dicted by it, and two L-shaped sliders, one ends of which are placed and the guide grooves corresponding There are 1 racks, while the others are oppositely located in the guide groove of the knife support and are loaded one against the other, scales are drawn along the guide grooves, and distance arrows are placed on the races located at the guide ends of the sliders. 2. The device of claim 1, which is tactile in that it is provided with a goniometer made in the form of an L-shaped plate, at one end of which there is a longitudinal groove with a scale of angle reading and designed to interact with the caliper of a triangular protrusion, and the other end is fixed on the end of one of the uprights, and an elastic thread, one end of which is fixed in the place of attachment of the plate with the stand, and the other is placed in a groove with the possibility of movement. 35 40 Aa Fig.z Type B eleven FIG. five Yr Fie.b