CN-122016310-A - Reliability test method after bearing installation

Abstract

The application relates to the technical field of machining and detection, in particular to a reliability test method for a bearing after installation. The torque wrench can conveniently apply torque on the bearing outer ring, and replaces personnel to judge the reliability of fixing the bearing outer ring by hand feeling.

Inventors

• WANG ZELIANG
• GE MINGYU
• LI JIAHAO
• SU YUAN

Assignees

• 大连长丰实业总公司

Dates

Publication Date

20260512

Application Date

20260323

Claims (5)

1. 1. A reliability test method after bearing installation is characterized in that, The method comprises the following steps: Dismantling the bearing inner ring of the bearing which is already installed on the part, inserting the square bolt with the inner side into the bearing outer ring, fastening the square bolt with the boss by using the nut with the boss, fastening the two end surfaces of the bearing outer ring by using the square bolt with the inner side and the nut with the boss, and ensuring that no sliding occurs between the end surfaces of the square bolt with the inner side and the nut with the boss and the end surface of the bearing outer ring when moment is applied; Fixing the part, enabling the inner square hole of the bolt with the inner square to be upwards, ensuring that the axes of the bolt with the inner square, the nut with the boss and the bearing outer ring are perpendicular to the ground, inserting the square of the torque wrench into the inner square hole of the bolt with the inner square, smoothly applying torque to observe whether the bearing outer ring rotates in the bearing hole of the part, and marking in advance by a marker pen penetrating through one mark of the bearing outer ring and the end face of the bearing hole, so that whether the bearing outer ring rotates is judged conveniently.
2. 2. The method for testing reliability after mounting of bearings according to claim 1, wherein, The bolt with the inner square is three-section ladder-shaped, one end is hexagonal, the end face is provided with the inner square hole with the largest diameter, the middle section is a cylinder, the other end is a threaded section with the smallest diameter, the axes of the three sections are coaxial, and each end face is perpendicular to the axis.
3. 3. The post-bearing-mounting reliability test method according to claim 2, wherein, The nut with the boss is in a two-section ladder shape, one end of the nut is hexagonal, the other end of the nut is an outer cylinder, a through internal thread is arranged in the middle of the nut with the boss, the internal thread, the hexagonal and the outer cylinder are coaxial, and each end face is perpendicular to the axis.
4. 4. A method for testing reliability of a bearing according to claim 3, wherein, The internal thread of the nut with the boss is matched with the thread section of the bolt with the inner square; the outer diameter of the cylinder of the nut with the boss is consistent with the outer diameter of the cylinder of the middle section of the bolt with the inner square, and the outer diameters of the cylinder are smaller than the outer diameter of the outer ring of the bearing and larger than the inner diameter of the outer ring of the bearing.
5. 5. The method for post-bearing-mounting reliability test according to claim 4, wherein, The nut with the boss and the bolt with the inner square are made of aluminum alloy materials, so that the bearing is prevented from being damaged by pressing during clamping.

Description

Reliability test method after bearing installation Technical Field The application relates to the technical field of machining and detection, in particular to a reliability test method for a bearing after installation. Background The outer ring grooved self-lubricating bearing, the knuckle bearing and the like which are arranged on parts such as an airplane control system and the like need quality inspection after being arranged by punching, turning over and the like, and the outer ring of the bearing can not rotate in a certain moment range in a bearing hole of the control system part. At present, a torque measuring device such as a torque wrench cannot directly act on the bearing outer ring, and after the bearing is installed, the bearing is generally inspected by manually pinching the bearing outer ring to rotate, and the inspection mode is neither standard nor reliable. Sometimes, in order to prevent the bearing outer ring from rotating in the bearing hole of the part, an operator adopts a mode of adding deep drawing points and enlarging turning, and the bearing is possibly fixed too tightly, so that the flexibility of the bearing inner ring in the outer ring is affected. Disclosure of Invention The invention discloses a reliability test method after bearing installation, which can enable a torque wrench to conveniently apply torque on a bearing outer ring and can detect whether the bearing outer ring rotates in a certain torque range in a bearing hole of an operating system part. According to an aspect of the present application, there is provided a reliability test method after bearing installation, comprising the steps of: Dismantling the bearing inner ring of the bearing which is already installed on the part, inserting the square bolt with the inner side into the bearing outer ring, fastening the square bolt with the boss by using the nut with the boss, fastening the two end surfaces of the bearing outer ring by using the square bolt with the inner side and the nut with the boss, and ensuring that no sliding occurs between the end surfaces of the square bolt with the inner side and the nut with the boss and the end surface of the bearing outer ring when moment is applied; Fixing the part, enabling the inner square hole of the bolt with the inner square to be upwards, ensuring that the axes of the bolt with the inner square, the nut with the boss and the bearing outer ring are perpendicular to the ground, inserting the square of the torque wrench into the inner square hole of the bolt with the inner square, smoothly applying torque to observe whether the bearing outer ring rotates in the bearing hole of the part, and marking in advance by a marker pen penetrating through one mark of the bearing outer ring and the end face of the bearing hole, so that whether the bearing outer ring rotates is judged conveniently. The bolt with the inner square is three-section ladder-shaped, one end is hexagonal, the end face is provided with the inner square hole with the largest diameter, the middle section is a cylinder, the other end is a threaded section with the smallest diameter, the axes of the three sections are coaxial, and each end face is perpendicular to the axis. The nut with the boss is in a two-section ladder shape, one end of the nut is hexagonal, the other end of the nut is an outer cylinder, a through internal thread is arranged in the middle of the nut with the boss, the internal thread, the hexagonal and the outer cylinder are coaxial, and each end face is perpendicular to the axis. The internal thread of the nut with the boss is matched with the thread section of the bolt with the inner square; the outer diameter of the cylinder of the nut with the boss is consistent with the outer diameter of the cylinder of the middle section of the bolt with the inner square, and the outer diameters of the cylinder are smaller than the outer diameter of the outer ring of the bearing and larger than the inner diameter of the outer ring of the bearing. The nut with the boss and the bolt with the inner square are made of aluminum alloy materials, so that the bearing is prevented from being damaged by pressing during clamping. The application has the advantages that: the invention discloses a reliability test method after bearing installation, which can ensure that a torque wrench conveniently applies torque on a bearing outer ring to replace personnel to judge the reliability of the fixing of the bearing outer ring by hand feeling. Drawings Fig. 1 is a schematic illustration of a part. Fig. 2 is a schematic view of a bearing. Fig. 3 is a schematic view of a part to which the reliability test apparatus is attached. Fig. 4 is a schematic view of a square bolt in-band. Fig. 5 is a schematic view of a nut with a boss. Wherein, 1-1 operating system parts, 1-2 bearing inner rings, 1-3 bearing outer rings, 2 bolts with inner square directions and 3 nuts with bosses. Detailed Description The present application is descr