CN210198711U

CN210198711U - Device for detecting activity of bearing

Info

Publication number: CN210198711U
Application number: CN201921140106.6U
Authority: CN
Inventors: Zhihua Gou; 苟志华
Original assignee: WUXI HAIHONG FINE MACHINERY MANUFACTURING Co Ltd
Current assignee: WUXI HAIHONG FINE MACHINERY MANUFACTURING Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-03-27
Anticipated expiration: 2029-07-19

Abstract

The utility model provides a bearing agility detection device, includes dabber test rack, motor and motor drive's rubber belt pulley, light detection counting assembly, is used for fixed bearing inner race with the dabber of dabber test rack, and motor drive's rubber belt pulley also install on the movable support, and rubber belt pulley has and contacts with the bearing inner race and throw off two positions, and fixed bearing inner race light detection counting assembly aligns the bearing ring plane, counts the steel ball of rotation. The rubber belt is in friction contact with or separated from two positions of the bearing outer ring, and after the rubber belt is separated from the contact, the number of steel balls is detected by light, namely the speed after rotation is detected; and then compared with the detection of a standard part, the quality of flexibility is judged by utilizing the comparison measurement mode. The optical detection counting is accurate, the rubber belt rapidly exits after friction, the bearing is in a free rotation state, and the detection state is uniform.

Description

Device for detecting activity of bearing

Technical Field

The utility model discloses can be applied to special miniature deep ditch bearing flexibility and detect.

Background

In the process of machining the deep groove ball bearing, the bearing rotation precision loss is caused by factors such as machining precision, accessory circulation, part cleaning, assembly deformation and the like. The bearing needs to flexibly detect the rotation of a product before lubricating grease is added, and the ultra-miniature bearing is judged by a manual detection method. The bearing flexibility detection is to detect the damping torque of the bearing in rotation, and is to perform preliminary system detection on the processing precision of a bearing ring, the cleanliness of the bearing and the assembly integrity of accessories. The detection device for the flexibility of the small bearing or the large bearing is suitable for the detection device for the small and large bearings which cannot detect the flexibility and the activity of the ultra-small bearings due to the characteristics of light weight, thin wall thickness and the like of the ultra-small bearings.

SUMMERY OF THE UTILITY MODEL

In the flexibility detection, an inner ring is usually fixed by a die, fingers quickly rub an outer ring of a bearing to feel and observe the flexibility degree and the rotation stop state of the bearing in the rotation process, and the theoretical analysis shows that the abnormal resistance of the bearing in the rotation process can greatly influence the speed of the bearing after the rotation process, and the phenomena of slow rotation, rotational jitter, sudden stop and the like can be generated; in the actual detection, the flexibility is mainly judged according to the speed of the bearing after rotation and the sudden stop phenomenon, the conclusion is drawn by combining the actual detection condition, and the quality of the flexibility of the bearing can be judged only by comparing and monitoring the speed of the bearing after rotation.

The technical scheme of the utility model be, a bearing agility activity detection device, including dabber test rack, motor and motor drive's rubber belt pulley, light detection counting assembly, be used for the fixed bearing inner circle with the dabber test rack's dabber, motor and motor drive's rubber belt pulley also install on the movable support, rubber belt pulley have with bearing inner race contact with throw off two positions, fixed bearing inner circle light detection counting assembly is to bearing circle plane, the steel ball of pairing rotation is counted.

The mandrel is made of high polymer materials and is arranged on a cylinder rod capable of moving up and down, the inner ring of the fixed bearing is provided with an upper position and a lower position, and the outer ring of the bearing is contacted with the rubber belt pulley when the mandrel is at the upper position.

After the mandrel of the mandrel detection frame is used for fixing the bearing inner ring, the rubber belt pulley is in contact with the bearing outer ring to drive the bearing outer ring to rotate, the optical detection counting device aligns to the plane of the bearing ring after the belt pulley is separated from the contact, and the number of rotating circles is counted, for example, the number of rotating steel balls is counted. Other means of counting may be used, but optical counting is a conventional way of counting bearing rotations in the art.

The rubber belt rubs the outer ring and then retreats (the bearing rotates until the rubber belt wheel driven by the motor is separated from the contact with the outer ring of the bearing, at the moment, the bearing has the same rotating speed as the belt wheel), and the speed after the rotation is detected by utilizing the number of steel balls of light detection (or Hall magnetic detection); and then compared with the detection of a standard part, the quality of flexibility is judged by utilizing the comparison measurement mode.

Has the advantages that: the utility model discloses the advantage of device is: the optical detection counting is accurate, the rubber belt rapidly exits after friction, the bearing is in a free rotation state, and the detection state is uniform. Because the ultra-micro bearing has the characteristics of small size, light weight and the like, the bearing speed cannot be accurately represented by detecting with a common mechanical device, aiming at the characteristics, the inner ring of the bearing is fixed by a mandrel, a rubber belt is retreated (the bearing is rotated) after rubbing an outer ring, and the speed of a steel ball after rotation is detected by red light; and then compared with the detection of a standard part, the quality of flexibility is judged by utilizing the comparison measurement mode. The device has the advantages that: the red light detection and counting are accurate, the rubber belt rapidly exits after friction, the bearing is in a free rotation state for detection, and the detection states are unified

Drawings

Fig. 1 is a design schematic diagram of the present improved structure.

Detailed Description

As shown in the figure, the bearing flexibility detection device comprises a mandrel detection frame, a motor-driven rubber belt pulley and a light detection counting device, wherein a mandrel of the mandrel detection frame is used for fixing a bearing inner ring, the motor and the motor-driven rubber belt pulley are also arranged on a movable support, the rubber belt pulley is provided with two positions which are in contact with and separated from a bearing outer ring, the light detection counting device of the fixed bearing inner ring is aligned to the plane of the bearing ring, and rotating steel balls are counted.

The detection device comprises a motor 1, a rubber belt pulley 2 driven by the motor, outer ring rubber 3, a light detection counting device 5, a mandrel 8 of a mandrel detection frame, a bearing 7 inner ring, a movable support 4, a rubber belt pulley driven by the motor and a motor, wherein the rubber belt pulley is provided with two positions of contact and separation with the bearing outer ring, and the outer ring rubber 3 rotates when contacting with the bearing outer ring; the fixed bearing inner ring optical detection counting device 5 detects infrared rays 6 which are aligned to the plane of the bearing ring, and counts the rotating steel balls. The rubber belt rubs the outer ring to retreat (is separated from contact, so that the bearing rotates to the rotating speed of the rubber belt pulley driven by the motor), and the speed after the rotation is detected by detecting the number of steel balls by light; and then compared with the detection of a standard part, the quality of flexibility is judged by utilizing the comparison measurement mode. The device has the advantages that: the optical detection counting is accurate, the rubber belt rapidly exits after friction, the bearing is in a free rotation state, and the detection state is uniform.

The preparation method comprises the following specific steps: the workpiece dimensions are determined from the bearings. And (3) according to a bearing dimension design assembly processing drawing, determining the dimension of the friction wheel, the motor speed, the size of the rubber belt and the accuracy of the red light instrument. Selecting a material processing part, and calculating the fit size of the material processing part and a bearing hole; mounting the assembly, and paying attention to the fact that the gap between the bearing hole and the mandrel is smaller than 0.06mm and larger than 0.03 mm; after the installation, assemble check out test set with this mechanism, according to equipment action adjustment procedure, get the standard part of detection again, place the standard part at the detection station, through data when clicking the action and having recorded the ball pocket rotation, judge the standard value according to data setting (the flexibility is better the data is big more), put the assigned position with the standard part, start the detection.

Claims

1. The utility model provides a bearing agility detection device, characterized by includes dabber test rack, motor and motor drive's rubber belt pulley, light detection counting assembly, uses the dabber of dabber test rack to be used for fixed bearing inner race, and motor drive's rubber belt pulley also install on the movable support, and rubber belt pulley has with bearing outer lane contact and takes off two positions, and fixed bearing inner race light detection counting assembly aligns the bearing circle plane, counts the steel ball of rotation.

2. The bearing flexibility detecting device according to claim 1, wherein the core shaft is made of a polymer material and is mounted on a cylinder rod capable of moving up and down, the fixed bearing inner ring has an upper position and a lower position, and the bearing outer ring contacts the rubber belt pulley when the core shaft is in the upper position.