CN-224230903-U - Rolling mill bearing inner diameter measuring device

CN224230903UCN 224230903 UCN224230903 UCN 224230903UCN-224230903-U

Abstract

The utility model relates to the technical field of bearing measuring tools, in particular to a rolling mill bearing inner diameter measuring device. The utility model provides a rolling mill bearing inner diameter measuring device which comprises a standard calibration block and a measuring scale mechanism, wherein the inner diameter of the standard calibration block is the same as the inner diameter of a corresponding bearing to be measured in a natural state, the measuring scale mechanism comprises a support, a measuring fixed head, a measuring movable head, a dial indicator, a swinging measuring mechanism and a movable head vertical scale, the measuring fixed head is arranged on the support, the measuring movable head is slidably arranged on the support, and the dial indicator is arranged on the measuring fixed head and positioned between the measuring fixed head and the measuring movable head. The device for measuring the inner diameter of the bearing of the rolling mill is short in time spent for measuring the inner diameter of the hot-packed bearing, can rapidly measure the inner diameter of the hot-packed bearing, and is simple to operate and convenient to use.

Inventors

HUANG HAIQIANG
Song Yaoxian
MA XIANGJUN
Shao Fuan
ZHU LIANG
Xing Shenglin

Assignees

大冶特殊钢有限公司

Dates

Publication Date: 20260512
Application Date: 20250530

Claims (10)

1. The rolling mill bearing inner diameter measuring device is characterized by comprising a standard calibration block (1) and a measuring ruler mechanism, wherein the inner diameter of the standard calibration block (1) is the same as the inner diameter of a corresponding bearing to be measured in a natural state, the measuring ruler mechanism comprises a support (3), a measuring fixed head (4), a measuring movable head (5), a dial indicator (9), a swinging measuring mechanism and a movable head vertical scale (7), the measuring fixed head (4) is arranged on the support (3), the measuring movable head (5) is slidably arranged on the support (3), and the dial indicator (9) is arranged on the measuring fixed head (4) and is positioned between the measuring fixed head (4) and the measuring movable head (5); The swinging measurement mechanism comprises a swinging block (8), a fixed-head vertical scale (6) vertically arranged on the swinging block (8) and a horizontal scale (15) horizontally arranged on the swinging block (8), wherein the swinging block (8) is rotatably arranged on the measurement fixed head (4) through a rotating shaft (11), and the horizontal scale (15) is positioned below the dial indicator (9); The gravity center of the swing measuring mechanism deviates from the axis of the rotating shaft (11), and in a natural state, an included angle formed between the fixed-head vertical scale (6) and the bracket (3) is an acute angle; The movable head vertical scale (7) is vertically arranged on the measuring movable head (5), the side surfaces of the movable head vertical scale (7) and the fixed head vertical scale (6) which are contacted with the inner wall of the bearing to be measured are respectively provided with a contact head (601), and the distance from the measuring end of the dial indicator (9) to the rotating shaft (11) is equal to the distance from the contact heads (601) of the fixed head vertical scale (6) to the rotating shaft (11).
2. A rolling mill bearing inner diameter measuring device according to claim 1, further comprising two measuring pads (2), said measuring pads (2) being intended to be placed on the upper surface of the bearing to be measured to carry said measuring scale mechanism.
3. A rolling mill bearing inner diameter measuring device according to claim 1, characterized in that the fixed head vertical scale (6) is movable up and down relative to the oscillating block (8), and the movable head vertical scale (7) is movable up and down relative to the measuring movable head (5).
4. The rolling mill bearing inner diameter measuring device according to claim 3, wherein the fixed head vertical scale (6) is slidably mounted on the swinging block (8) along the vertical direction, the fixed head vertical scale (6) is locked on the swinging block (8) through a locking piece, the movable head vertical scale (7) is slidably mounted on the measuring movable head (5) along the vertical direction, and the movable head vertical scale (7) is locked on the measuring movable head (5) through a locking piece.
5. A rolling mill bearing inner diameter measuring device according to claim 1, characterized in that the swinging block (8) has a first side (801) and a second side (802) which are parallel, the swinging block (8) is provided with a mounting hole for mounting the rotating shaft (11), and the center of gravity of the swinging block (8) is lower than the mounting hole.
6. A rolling mill bearing inner diameter measuring device according to claim 5, characterized in that the horizontal scale (15) is vertically mounted on the first side (801) of the oscillating block (8), the distance between the fixed head vertical scale (6) and the second side (802) being smaller than the distance between the fixed head vertical scale (6) and the rotation axis (11).
7. A rolling mill bearing inner diameter measuring device according to claim 1, characterized in that the measuring moving head (5) and the bracket (3) are locked by a locking member.
8. The rolling mill bearing inner diameter measuring device according to claim 7, wherein the contact heads (601) on the movable head vertical scale (7) and the fixed head vertical scale (6) are hemispherical.
9. The device for measuring the inner diameter of a rolling mill bearing according to claim 1, wherein a dial indicator mounting seat is arranged at one end of the measuring fixed head (4) close to the measuring movable head (5), and the dial indicator (9) is arranged on the dial indicator mounting seat and can slide relative to the dial indicator mounting seat.
10. A rolling mill bearing inner diameter measuring device according to claim 2, characterized in that the standard calibration block (1) has a first inner surface (101) and a second inner surface (102) which are parallel, the distance between the first inner surface (101) and the second inner surface (102) being the same as the inner diameter of the bearing to be measured in the natural state.

Description

Rolling mill bearing inner diameter measuring device Technical Field The utility model relates to the technical field of bearing measuring tools, in particular to a rolling mill bearing inner diameter measuring device. Background In the hot-charging process of the rolling mill bearing, the accurate measurement of the size of the inner ring of the bearing is a key for ensuring the assembly precision of the bearing and the shaft, and the proper interference fit can ensure the stability of the bearing in the running process. If the inner ring size measurement is inaccurate, the interference is improper, so that the bearing is loosened in the running process, the normal operation of the rolling mill is affected, and the product quality is reduced. For example, if the bearings loosen during hot rolling, the gap between the rolls may change, resulting in an undesirable thickness of the rolled steel. The reasonable interference fit also can ensure the bearing capacity of the bearing, when the excessive interference is insufficient, the bearing can displace or rotate when bearing load, the service life of the bearing is reduced, and the excessive interference can make the bearing difficult to install and can cause excessive internal stress of the bearing, thereby causing early fatigue failure. Accurate inner ring measurement is helpful to avoid equipment faults caused by improper assembly, when the matching size of the bearing inner ring and the shaft is incorrect, abnormal vibration and noise can be generated under the working conditions of high-speed running and heavy load of the rolling mill, and the abnormal conditions can accelerate the abrasion of other parts of the equipment, even possibly cause important safety problems such as driving accidents and the like. In addition, proper assembly can guarantee the heat dispersion of bearing, if the inner circle assembly is too tight, can make the inside grease distribution of bearing inhomogeneous, influence the heat dissipation, lead to the bearing high temperature, and then initiate lubrication failure, finally damage the bearing. At present, in the hot-set process of a rolling mill bearing, the first two ways are usually used for measurement, but the time spent for measuring the inner diameter of the hot-set bearing by using a caliper or a micrometer is long, usually about 8 minutes is required, the cooling speed of the inner ring of the hot-set bearing is high (about 1-2 ℃ per minute), the long time spent for measuring the inner diameter of the hot-set bearing is long, the whole measurement and the installation time are prolonged, the inner ring of the bearing is contracted, the interference is insufficient, the subsequent installation is difficult, and the measurement by using the caliper or the micrometer has high requirements on the experience of workers. Secondly, by adopting measuring means such as laser scanning, infrared temperature measurement compensation and the like, the measuring means is advanced, but is easily affected by field environment, the purchase cost and the maintenance cost of instruments and equipment are high, and the measuring means is extremely easily affected by environment in severe environments of steel plants to generate measuring errors. And the errors need more specialized means to be corrected, and the maintenance difficulty is extremely high. Therefore, how to design a bearing inner diameter measuring tool with simple operation, short measuring time and low cost is a technical problem to be solved. Disclosure of utility model The utility model solves the problems of designing a bearing inner diameter measuring tool which is simple to operate, short in measuring time and low in cost. (II) technical scheme The inner diameter measuring device of the rolling mill bearing comprises a standard check block and a measuring scale mechanism, wherein the inner diameter of the standard check block is the same as the inner diameter of a corresponding bearing to be measured in a natural state; The measuring ruler mechanism comprises a bracket, a measuring fixed head, a measuring movable head, a dial indicator, a swinging measuring mechanism and a movable head vertical scale, wherein the measuring fixed head is arranged on the bracket, the measuring movable head is slidably arranged on the bracket, and the dial indicator is arranged on the measuring fixed head and is positioned between the measuring fixed head and the measuring movable head; the swinging measuring mechanism comprises a swinging block, a fixed head vertical scale vertically arranged on the swinging block and a horizontal scale horizontally arranged on the swinging block, wherein the swinging block is rotatably arranged on the measuring fixed head through a rotating shaft, and the horizontal scale is positioned below the dial indicator; The gravity center of the swing measuring mechanism deviates from the axis of the rotating shaft, and in a natural state, an included angle for