Small cross cylindrical roller bearing raceway angle detection device

Abstract

The utility model provides a small cross cylindrical roller bearing raceway angle detection device. The small cross cylindrical roller bearing raceway angle detection device comprises a workbench which is obliquely arranged and is used for placing a small cross cylindrical roller bearing; supporting bolts are arranged at the bottom and the side part of the small crossed cylindrical roller bearing on the working table, and supporting fulcrums for supporting and limiting a raceway of the small crossed cylindrical roller bearing are arranged on the supporting bolts towards the direction of the small crossed cylindrical roller bearing; the top of the small cross cylindrical roller bearing is provided with a sample plate attached to a raceway of the small cross cylindrical roller bearing, and the front end of the sample plate is completely attached to the small cross cylindrical roller bearing standard part with the raceway angle of 90 degrees; the workbench is provided with a dial gauge at the tail end of the sample plate, a gauge measuring head of the dial gauge is attached to the tail end of the sample plate, and a gauge stand of the dial gauge is vertically arranged on the workbench. According to the utility model, the angle of the raceway of the small cross cylindrical roller bearing can be known, and compared with the scheme of the existing patent, repeated adjustment is not needed, the steps are simplified, and the efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing detection, in particular to a small-sized cross cylindrical roller bearing raceway angle detection device. Background Art

[0002] Crossed cylindrical roller bearings have two mutually perpendicular raceways, with the cylindrical rollers arranged at 90° angles within the two raceways. This allows them to withstand axial loads, radial loads, and overturning moments. These bearings are compact and easy to install, while offering high rigidity, load capacity, and precision. They are widely used in the joints and rotating parts of industrial robots, rotary tables in machining centers, and turntables for precision instruments.

[0003] The two perpendicular raceways of a crossed cylindrical roller bearing are arranged on the inner and outer rings, respectively. Theoretically, they are designed to be 90° perpendicular to each other. This 90° raceway angle is the optimal value, which can reduce friction torque, increase the bearing's load capacity and maximum speed, etc. However, due to machining errors during actual processing, this perpendicular raceway angle inevitably deviates from 90°. Whether it deviates positively or negatively from 90°, it will affect the performance of the crossed cylindrical roller bearing. Therefore, it is necessary to design a tolerance for the raceway angle to minimize the impact on bearing performance.

[0004] At present, the common method for accurately measuring the raceway angle of crossed cylindrical roller bearings is to use a profilometer to collect coordinate points along the two raceways, then use software to fit the contour curve and analyze and calculate the raceway angle. This method is affected by the raceway length and the accuracy of coordinate point collection, which affects the accuracy of raceway angle measurement to a certain extent. In addition, this method has low measurement efficiency and cannot meet the requirements of mass production.

[0005] The existing patent publication number CN105180779A discloses an instrument and method for measuring the angular deviation of the inner and outer raceways of an integral crossed cylindrical roller bearing ring. The instrument uses a standard sample comparison method to quantitatively determine whether the angular deviation of the outer ring raceway meets the requirements of the product drawing, solving the problem of inaccuracy in manual visual comparison and detection, and improving detection accuracy and efficiency. However, due to the need to adjust the micrometer gauge so that the gauge probe contacts one end of the ring standard part raceway, and then fine-tune the rotating shaft so that the standard part raceway is perpendicular to the micrometer gauge probe, and the need to use a ring standard sample to calibrate the horizontal deflection of the detection platform before testing, multiple adjustments are required for each test, and the steps are numerous, making it extremely inefficient in actual use. Utility Model Content

[0006] The purpose of the utility model is to provide a small cross cylindrical roller bearing raceway angle detection device, which can understand the angle of the small cross cylindrical roller bearing raceway according to the reading of the micrometer. Compared with the existing patented solution, it does not require multiple adjustments, the steps are simplified, and the efficiency is higher.

[0007] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a small cross cylindrical roller bearing raceway angle detection device, comprising a workbench arranged obliquely for placing the small cross cylindrical roller bearing;

[0008] The workbench is provided with supporting bolts at the bottom and side of the small cross cylindrical roller bearing, and the supporting bolts are provided with supporting fulcrums facing the direction of the small cross cylindrical roller bearing for supporting and limiting the raceway of the small cross cylindrical roller bearing;

[0009] A template is provided on the top of the small cross cylindrical roller bearing to fit its raceway, and the front end of the template is completely fitted with a standard small cross cylindrical roller bearing with a raceway angle of 90°;

[0010] The workbench is provided with a micrometer at the tail end of the sample, the probe of the micrometer is fitted with the tail end of the sample, and the instrument stand of the micrometer is vertically arranged on the workbench.

[0011] Preferably, the template includes a template body and a front end, and the bottom of the template body is in contact with the workbench.

[0012] The beneficial effects of the utility model are:

[0013] This solution places a template on the top of a small crossed cylindrical roller bearing that fits its raceway. A micrometer is installed at the end of the template on the workbench. The micrometer's probe fits the end of the template. The micrometer's reading allows the angle of the small crossed cylindrical roller bearing's raceway to be determined based on the reading. Adjustments to the small crossed cylindrical roller bearing during machining ensure a 90° raceway angle. Compared to existing patented solutions, this solution eliminates the need for multiple adjustments, simplifies the process, and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2This is a schematic diagram of the detection of the small cross cylindrical roller bearing standard parts of the utility model.

[0017] Figure 3 This is a schematic diagram of the detection of a small cross cylindrical roller bearing of the utility model when the angle is too large.

[0018] Figure 4 This is a schematic diagram of the detection of a small cross cylindrical roller bearing according to the utility model when the angle is small.

[0019] In the figure, 1. workbench, 2. micrometer, 3. instrument stand, 4. sample, 5. small cross cylindrical roller bearing, 6. supporting fulcrum, 7. supporting bolt. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification so as to facilitate understanding and reading by those familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes shall still fall within the scope of the technical contents disclosed in this utility model without affecting the efficacy and objectives that can be achieved by the present utility model.

[0022] At the same time, it should be noted that: unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the technical field to which the utility model belongs. The meaning of "multiple" used in the patent application specification and claims of this utility model is two or more; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front end", "rear end", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. Changes or adjustments to their relative relationships, without substantial changes in the technical content, should also be regarded as the scope of implementation of the utility model.

[0023] The present invention will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0024] The utility model discloses a small cross cylindrical roller bearing raceway angle detection device. Figure 1As shown, the embodiment includes an inclined workbench 1. The support assembly supporting the workbench 1 is not shown in the drawings and may be any of a variety of conventional support members. The workbench 1 is used to place a small cross cylindrical roller bearing 5. The workbench 1 is provided with support bolts 7 at the bottom and sides of the small cross cylindrical roller bearing 5. The support bolts 7 are provided with support fulcrums 6 facing the small cross cylindrical roller bearing 5 to support and limit the raceway of the small cross cylindrical roller bearing 5.

[0025] A template 4 is mounted on top of the small crossed cylindrical roller bearing 5, which fits its raceway. The front end of the template 4 completely fits the standard small crossed cylindrical roller bearing 5, which has a raceway angle of 90°. A micrometer 2 is mounted on the workbench 1 at the rear end of the template 4. The probe of the micrometer 2 fits the rear end of the template 4, and the instrument stand 3 of the micrometer 2 is vertically mounted on the workbench 1.

[0026] like Figure 2 As shown, place the small cross cylindrical roller bearing 5 standard part on the workbench 1, and fit the small cross cylindrical roller bearing 5, sample 4 and the probe of the micrometer 2 in sequence, and zero the reading of the micrometer 2 in this measurement state. Place the small cross cylindrical roller bearings 5 ​​of the required angle measurement on the workbench 1 respectively, and fit the small cross cylindrical roller bearing 5, sample 4 and the probe of the micrometer 2 in sequence, as shown. Figure 3 As shown in the figure, when the angle of the small cross cylindrical roller bearing 5 is too large, the probe of the micrometer 2 will move downward relative to the instrument frame 3, and the measurement value of the micrometer 2 will be negative. Figure 4 As shown in the figure, when the angle of the small cross cylindrical roller bearing 5 is too small, the probe of the micrometer 2 will move upward relative to the instrument frame 3, and the measurement value of the micrometer 2 will be positive. According to the reading of the micrometer 2, the processing of the small cross cylindrical roller bearing 5 can be adjusted to ensure that the raceway angle is processed to 90°.

[0027] It should be noted that the parts not described in detail in the above embodiments are all prior art.

[0028] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should be included in the scope of protection of the present invention.

Claims

1. A small cross cylindrical roller bearing raceway angle detection device, characterized by: A workbench (1) is provided with an inclined configuration for placing a small cross cylindrical roller bearing (5); The workbench (1) is provided with supporting bolts (7) at the bottom and side of the small cross cylindrical roller bearing (5), and the supporting bolts (7) are provided with supporting fulcrums (6) for supporting and limiting the raceway of the small cross cylindrical roller bearing (5) in the direction of the small cross cylindrical roller bearing (5); A template (4) is provided on the top of the small cross cylindrical roller bearing (5) and is fitted with its raceway. The front end of the template (4) is completely fitted with a standard part of the small cross cylindrical roller bearing (5) with a raceway angle of 90°. The workbench (1) is provided with a micrometer (2) at the tail end of the sample (4), the measuring head of the micrometer (2) is fitted to the tail end of the sample (4), and the instrument frame (3) of the micrometer (2) is vertically arranged on the workbench (1).

2. The small-sized crossed cylindrical roller bearing raceway angle detection device according to claim 1, characterized in that: The template (4) comprises a template body and a front end, and the bottom of the template body is fitted with the workbench (1).

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