Measuring instrument for measuring depth of small flange circular groove of inner ring of self-aligning roller bearing

Abstract

A measuring instrument for measuring the depth of a small flange circular groove of an inner ring of a self-aligning roller bearing belongs to the technical field of bearing detection and comprises a dial indicator, a measuring fork ruler and a locking screw, the measuring fork ruler is erected on a workpiece to be measured, the dial indicator is arranged in the middle of the measuring fork ruler in a penetrating manner and fixed on the measuring fork ruler through the locking screw, and the measuring fork ruler is fixed on the measuring fork ruler through the locking screw. And the measuring end of the dial indicator is in contact fit with the bottom surface of the circular groove of the workpiece to be measured. The beneficial effects of the utility model are that the measuring instrument is simple in structure and low in manufacturing cost, has the function of measuring the depth of the bearing ring outer diameter circular groove, not only reduces the purchase cost and realizes the measurement of the depth of the super-huge ring circular groove, but also is only contacted with the outer diameter of the ring and the bottom of the circular groove in the measurement process, thereby improving the measurement precision. Measurement results are irrelevant to the inner diameter and the wall thickness, measurement of the depth of the circular groove can be achieved through one-time measurement, and measurement errors caused by secondary measurement are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing detection, and specifically designs a measuring instrument suitable for measuring the depth of a small rib circular groove of an inner ring of a spherical roller bearing. Background Art

[0002] Bearing rings are important components of bearings and are divided into inner rings and outer rings. Turning is an important process in the processing of bearing rings. The depth of the circular groove of the small rib of the inner ring of a spherical roller bearing is usually measured by measuring the inner diameter wall thickness with a caliper and then inferring the depth of the circular groove. Due to the influence of the inner diameter tolerance and the outer diameter tolerance, the dimensional error of the circular groove depth measured by this method is large. The use of a measuring platform for measurement reduces the processing efficiency of the product. At present, the number of relevant literature and patents that can be found in the field of measuring the depth of circular grooves of bearing rings in my country is limited. However, in actual production, we need to turn the circular grooves of bearing rings, so we urgently need to develop related equipment. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an instrument for measuring the depth of the small rib circular groove of the inner ring of a spherical roller bearing, which is used for the processing and measurement of the circular groove of the bearing ring. The circular groove depth measuring device provided by the utility model has a simple structure, low cost, easy operation and higher measurement accuracy.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a measuring instrument for measuring the depth of the small rib circular groove of the inner ring of a spherical roller bearing, comprising a dial indicator, a measuring fork scale and a locking screw, wherein the measuring fork scale is mounted on a workpiece to be measured, a dial indicator is penetrated in the middle of the measuring fork scale, the dial indicator is fixed to the measuring fork scale by a locking screw, and the measuring end of the dial indicator contacts and cooperates with the bottom surface of the circular groove of the workpiece to be measured.

[0005] The middle part of the measuring fork ruler is a rectangular block structure, and downwardly inclined positioning feet are symmetrically provided at both ends thereof. The two positioning feet are arranged at the two ends of the circular groove of the workpiece to be measured. A through hole is vertically provided at the center position of the measuring fork ruler, and a dial indicator is provided in the through hole. The diameter of the dial indicator rod is smaller than the inner diameter of the through hole. The side wall of the measuring fork ruler is provided with a threaded through hole perpendicular to the axis of the through hole, and a locking screw is provided in the threaded through hole.

[0006] The outer thread of the locking screw matches the inner thread of the threaded through hole, and a colloid round head is provided at the end of the locking screw to avoid damage to the dial indicator rod.

[0007] The contact surface between the positioning support leg and the workpiece to be measured is provided with a round foot to avoid scratching the workpiece to be measured.

[0008] The beneficial effects of the utility model are as follows: the measuring instrument has a simple structure and low manufacturing cost, and has the function of measuring the depth of the circular groove of the outer diameter of the bearing ring, which not only reduces the procurement cost, but also realizes the measurement of the depth of the circular groove of an extra-large ring. In addition, during the measurement process, the measuring instrument only contacts the outer diameter of the ring and the bottom of the circular groove, and the measurement result is independent of the inner diameter and the wall thickness. The circular groove depth can be measured through one measurement, thereby reducing the measurement error caused by the secondary measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the use of the utility model.

[0010] Figure 2 It is a schematic diagram of the structure of the utility model.

[0011] Figure 3 It is a partial side sectional schematic diagram of the utility model.

[0012] In the figure: 1. workpiece to be measured, 2. measuring fork ruler, 201. positioning foot, 202. through hole, 203. threaded through hole, 3. dial indicator, 301. dial rod, 4. locking screw, 401. rubber round head. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings of this specification to clearly and completely describe the technical solution of the utility model. It should be noted that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] See also Figure 1-Figure 3A measuring instrument for measuring the depth of the small rib circular groove of the inner ring of a self-aligning roller bearing, comprising a dial indicator 3, a measuring fork 2 and a locking screw 4. The measuring fork 2 is mounted on a workpiece 1 to be measured, and a dial indicator 3 is provided in the middle of the measuring fork 2. The dial indicator 3 is fixed to the measuring fork 2 by the locking screw 4, and the measuring end of the dial indicator 3 is in contact with the bottom surface of the circular groove of the workpiece 1 to be measured. The middle part of the measuring fork 2 is a rectangular block structure, and downwardly inclined positioning legs 201 are symmetrically provided at both ends of the measuring fork 2. The two positioning legs 201 are mounted at both ends of the circular groove of the workpiece 1 to be measured. A through hole 202 is vertically provided at the center of the measuring fork 2, and a dial indicator 3 is provided in the through hole 202. The diameter of the dial indicator 3 is smaller than the inner diameter of the through hole 202. The side wall of the measuring fork 2 is provided with a threaded through hole 203 perpendicular to the axis of the through hole 202, and a locking screw 4 is provided in the threaded through hole 203. The outer thread of the locking screw 4 matches the inner thread of the threaded through hole 203, and the end of the locking screw 4 is provided with a rubber round head 401 to avoid damage to the dial rod 301 of the dial indicator 3. The contact surface between the positioning support foot 201 and the workpiece 1 to be measured is provided with a round foot to avoid scratching the workpiece 1 to be measured.

[0015] When the utility model is in use:

[0016] First, loosen the locking screw 4 and adjust the position of the dial indicator 3 on the measuring fork scale 2 so that their positions are consistent with the outer diameter of the inner ring of the workpiece 1 to be measured. Then tighten the locking screw 4 to fix the dial indicator 3 on the measuring fork scale 2. Next, place the measuring instrument on the outer diameter of the inner ring of the workpiece 1 to be measured, so that the measuring end of the dial indicator 3 contacts the position of the unmilled circular groove of the inner ring outer diameter, and read the indication of the dial indicator 3. Place the measuring instrument on the outer diameter of the inner ring of the workpiece 1 again, so that the measuring end of the dial indicator 3 contacts the bottom end of the circular groove, and read the indication of the dial indicator 3. Subtract the two values ​​to obtain the depth of the circular groove.

[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0018] The parts not described in detail in this utility model are prior art.

Claims

1. An instrument for measuring the depth of the small rib circular groove of the inner ring of a spherical roller bearing, comprising a dial indicator (3), a measuring fork (2) and a locking screw (4), wherein: The measuring fork scale (2) is mounted on the workpiece (1) to be measured, and a dial indicator (3) is provided in the middle of the measuring fork scale (2). The dial indicator (3) is fixed to the measuring fork scale (2) by a locking screw (4), and the measuring end of the dial indicator (3) is in contact with the bottom surface of the circular groove of the workpiece (1) to be measured.

2. The measuring instrument for measuring the depth of the small rib circular groove of the inner ring of a spherical roller bearing according to claim 1, characterized in that: The middle part of the measuring fork ruler (2) is a rectangular block structure, and downwardly inclined positioning feet (201) are symmetrically arranged at both ends of the measuring fork ruler (2), and the two positioning feet (201) are mounted on the two ends of the circular groove of the workpiece (1) to be measured. A through hole (202) is vertically arranged at the center position of the measuring fork ruler (2), and a dial indicator (3) is arranged in the through hole (202), and the diameter of the dial indicator (3) The dial rod (301) is smaller than the inner diameter of the through hole (202). The side wall of the measuring fork ruler (2) is provided with a threaded through hole (203) perpendicular to the axis of the through hole (202), and a locking screw (4) is arranged in the threaded through hole (203).

3. The measuring instrument for measuring the depth of the small rib circular groove of the inner ring of a spherical roller bearing according to claim 2, characterized in that: The external thread of the locking screw (4) matches the internal thread of the threaded through hole (203), and the end of the locking screw (4) is provided with a rubber round head (401) to avoid damage to the dial indicator (301).

4. The measuring instrument for measuring the depth of the small rib circular groove of the inner ring of a spherical roller bearing according to claim 2, characterized in that: The end of the positioning support foot (201) is provided with a round foot to avoid scratching the workpiece (1) to be measured during measurement.

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