SK322012A3 - The method of non-destructive measurement of internal radio ring bearings - Google Patents

Abstract

Workshop gauge a method of non-destructive measurement of the radius of the ring (4) bearing (5) and possibly other similar products. The gauge consists of the base plate (3), measuring contacts (1,2) with a smaller diameter and larger diameter with a transfer to a dial indicator. Depending on the amount of contact measuring contact (2) with a larger diameter and the radius of the ring (4) bearing (5) detects the size of the radius, and assess whether it is within the required tolerance

Description

An important prerequisite for proper and functional mounting of the bearing in the bearing is to maintain its connecting dimensions, which include the outer diameter of the outer ring, the inner ring bore, the mounting lug and the ring radii. Bearing manufacturers sometimes do not place the same emphasis on all these dimensions and consider some of them less important. One of the connecting dimensions is the radius of the outer and inner ring. The invention consists in measuring the radii in the bore of the inner rings in a non-destructive manner by means of the proposed workshop gauge.

BACKGROUND OF THE INVENTION

In the ring turning operation, the radius of FIG. 1 measured by stencils - checking the luminance. Out of service, in the control center, this parameter is measured by a destructive method - cutting several rings a day, which is a disadvantageous and costly method. The radius measurement with stencils can only be informative, ambiguous and inaccurate (although applicable directly to the machine), as each person can assess the condition differently. Some may find this parameter satisfactory when you attach a template, and not others. Moreover, if the turning of the rings takes place not on dry but using cutting fluids (oils), when comparing the surface of the ring and the template, the translucency of the liquid will be cast and the decision is difficult. And there is no time to wipe the rings during production in large-scale production. In addition, it is necessary to realize that the radius is connected to the ring in its face and into the hole not directly, but through radius runs. This means that it is a relatively complicated contour consisting of a radius and two runs.

SUMMARY OF THE INVENTION

The above-mentioned shortcomings are eliminated by the technical solution for radius evaluation directly in the production shop scale. One possibility is a measuring instrument, the principle and measurement of which is apparent from FIG. 1. The prerequisite of the solution is that the turning takes place by means of carbide cutting blades (not morally and technically obsolete communal blades, which lose the guarantee of the cutting edge profile after sharpening), whose cutting edge geometry is guaranteed. Then it is sufficient to check the part of the radius (or radius runout) on the ring while the machine is shifting after switching to another type of product or some other forced change in the machine - tool - workpiece system.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows the principle of the gauge for measuring the radius of the bearing rings.

EXAMPLES

The workshop gauge is shown in Figure 1. The figure shows the base plate 3, the smaller diameter I and larger diameter 2 contact points, the bearing radius 5 and the bearing ring 4 with their face on the base plate 3. The measurement procedure is as follows:

1. Place the bearing ring 4 - align it with the large face on the base plate 3

2. Let the measuring contact into the measuring space, part of the measuring contact with smaller diameter I touches the hole of the bearing ring 4

3. Measuring contact with larger diameter 2 touches the bearing radius 5 of the bearing. Depending on the distance, we are able to judge whether the measured distance is within the prescribed tolerances.

The gauge is suitable for workshop use. Casting it to another type of ring is quick and easy. It consists of a suitable height adjustment of the measuring contacts with a smaller diameter i and a larger diameter 2, or in exchange of these contacts with other diameters. The measured data is unambiguous and exact compared to the informative templates without implying a subjective human influence.

Industrial usability

The workshop gauge can be used to measure the inner radii of the holes of both bearing and other rings. It replaces the use of ambiguous templates as well as the use of the destructive method of uneconomical and irreversible cutting of rings. It can also replace the method of measuring radii with a conturograph, as the conturograph is not suitable for workshop operating conditions. The conturograph is only suitable for laboratory use.

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PATENT CLAIMS

1. A method of non-destructive measurement of the inner radii of the bearing rings

Claims (1)

1. A method of non-destructive measurement of inner radii of bearing rings, characterized by placing a bearing ring on the base plate, then letting the measuring contact into the measuring space, while a smaller diameter measuring contact touches the bore of the inner bearing ring and larger diameter The contact point touches the bearing ring radius, whereby the contact points with different diameters are connected to the dial gauge by means of a gearing and, depending on the contact height of the contact point with the larger diameter, determine the radius size and assess whether it is within the required tolerances.