A device for measuring the protrusion of the end surface of a tapered roller bearing

Abstract

The present invention discloses a device for measuring the protrusion of the end face of a tapered roller bearing, comprising a supporting reference plate, an inner ring measuring plate, a clamping table seat, a measuring table, a weight block bracket and a weight block. The supporting reference plate comprises a circular reference plate and a circular outer ring seat coaxially connected to the bottom surface of the reference plate; the inner ring measuring plate comprises a circular plate-shaped measuring plate and a circular inner ring seat coaxially connected to the bottom surface of the measuring plate; the outer edge of the measuring plate of the inner ring measuring plate located at the outer end of the inner ring seat is embedded in the groove of the reference plate; the clamping table seat is installed on the top surface of the supporting reference plate; the measuring rod sleeve of the measuring table is inserted into the perforation on the top plate of the clamping table seat, so that the measuring head of the measuring table is against the top surface center of the measuring plate of the inner ring measuring plate; the weight block bracket is placed on the top surface of the two bottom plates of the clamping table seat; the weight block is embedded in the mounting groove on the top surface of the weight block bracket. The present invention is not only convenient and simple to operate, but also has high detection efficiency, and the measured value is more accurate.

Description

Technical Field

[0001] The invention relates to a device for measuring the protrusion amount of the end surface of a tapered roller bearing. Background Art

[0002] The preload of tapered roller bearings during installation is very important for the use of bearings, especially in the use of automobile and truck wheel hub bearings. Preload means applying a force to the bearing in advance before installation or use to make the bearing deform to a certain extent. The purpose of this is to eliminate the influence of the deformation of the bearing after installation on the workpiece or accuracy during operation. The control of the size of the preload force of the bearing installation is closely related to the end face protrusion of the tapered roller (that is, the height difference between the small end face of the inner ring of the bearing and the large end face of the outer ring of the bearing). At present, there is no clear and unified method for detecting the end face protrusion of tapered roller bearings. Most of them use multi-point measurement of the height of the inner ring of the bearing and the total assembly height of the bearing, and then obtain the average height difference to obtain the end face protrusion value of the bearing. The disadvantage of this method is that it is necessary to measure the bearing at multiple points and obtain it through calculation, which has measurement errors, is cumbersome and not intuitive, and has low detection efficiency. At the same time, this method cannot be counterweighted in the measurement of the assembly height, and there are many inaccurate measurements. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a device for measuring the end face protrusion of a tapered roller bearing, which is not only convenient and simple to operate during measurement, has high detection efficiency, but also has more accurate measured values.

[0004] The object of the present invention is achieved as follows: A device for measuring the end face protrusion of a tapered roller bearing comprises a supporting reference plate, an inner ring measuring plate, a clamping table seat, a measuring table, a weight block bracket and a weight block;

[0005] The supporting reference plate comprises a circular reference plate and a circular outer ring seat coaxially connected to the bottom surface of the reference plate; the outer diameter of the reference plate is adapted to the outer diameter of the bearing outer ring, the inner diameter of the reference plate is adapted to the outer diameter of the small end surface of the bearing inner ring, a groove is radially provided on the inner diameter surface of the reference plate, and two threaded holes are centrally symmetrically provided on the top surface of the reference plate; the outer diameter of the outer ring seat is smaller than the outer diameter of the bearing outer ring, and the inner diameter of the outer ring seat is larger than the inner diameter of the large end surface of the bearing outer ring;

[0006] The inner ring measuring disk comprises a circular plate-shaped measuring disk and an annular inner ring seat coaxially connected to the bottom surface of the measuring disk; the thickness of the measuring disk is smaller than the width of the groove on the reference disk, and the diameter of the measuring disk is adapted to the groove bottom diameter of the groove on the reference disk; the outer diameter of the inner ring seat is adapted to the outer diameter of the small end surface of the inner ring of the bearing, and the inner diameter of the inner ring seat is larger than the inner diameter of the inner ring of the bearing; the outer edge of the measuring disk of the inner ring measuring disk located at the outer end of the inner ring seat is embedded in the groove of the reference disk, and can move axially relative to the supporting reference disk, and can make the bottom surface of the inner ring seat and the bottom surface of the outer ring seat on the same horizontal plane;

[0007] The meter clamping seat is formed by bending a long steel plate into an Ω shape with a top plate, two straight plates whose top ends are connected to the two ends of the top plate in a one-to-one correspondence, and two bottom plates whose one ends are connected to the bottom ends of the two straight plates in a one-to-one correspondence, and a through hole is provided in the center of the top plate, and a countersunk mounting hole is provided on each of the two bottom plates, and the spacing between the two countersunk mounting holes is adapted to the spacing between the two threaded holes on the reference plate, so that the meter clamping seat is installed on the top surface of the supporting reference plate by two screws, and the through hole on the top plate is coaxial with the reference plate;

[0008] The measuring rod sleeve of the measuring meter is inserted into the through hole on the top plate of the clamping meter base, so that the measuring head of the measuring meter is against the top center of the measuring disk of the inner ring measuring disk;

[0009] The load-bearing block bracket is in the shape of an inverted cylindrical barrel, the inner diameter of the load-bearing block bracket is adapted to the length of the top plate of the clamping table seat, and the thickness of the side wall of the load-bearing block bracket is adapted to the length of each bottom plate of the clamping table seat; a cylindrical mounting groove is coaxially provided on the top surface of the load-bearing block bracket, and two observation windows are centrally symmetrically provided on the side wall of the load-bearing block bracket; the load-bearing block bracket is placed on the top surfaces of the two bottom plates of the clamping table seat;

[0010] A cylindrical boss adapted to the mounting groove on the top surface of the weight block bracket is provided at the center of the bottom surface of the weight block, so that the weight block is embedded in the mounting groove on the top surface of the weight block bracket.

[0011] In the above-mentioned tapered roller bearing end face protrusion measuring device, the two observation windows on the load-bearing block bracket extend from the bottom surface of the side wall to the top surface of the side wall.

[0012] The tapered roller bearing end face protrusion measuring device of the present invention has the following characteristics: simple structure, with the large end face of the bearing outer ring as the measurement reference, the small end face of the bearing inner ring as the measurement surface, the reading position at the axis of the bearing, no need for multi-point measurement, no need for calculation, and the end face protrusion of the bearing can be directly measured and read. At the same time, the measuring device is equipped with a weight block, so that the bearing can be measured in a compressed state, making the measured value more accurate, and the measurement operation is convenient and simple, with high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a device for measuring the protrusion of a tapered roller bearing end surface of the present invention;

[0014] Figure 2 It is a schematic structural diagram of a meter clamping base in a measuring device of the present invention;

[0015] Figure 3 It is a diagram of the use state of the device for measuring the protrusion amount of the end surface of a tapered roller bearing of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] See also Figure 1 and Figure 2 The device for measuring the end protrusion of a tapered roller bearing of the present invention comprises a supporting reference plate 1, an inner ring measuring plate 2, a clamping table seat 3, a measuring table 4, a load block bracket 5 and a load block 6.

[0018] The support reference plate 1 comprises a circular reference plate 11 and a circular outer ring seat 12 coaxially connected to the bottom surface of the reference plate 11; wherein,

[0019] The outer diameter of the reference plate 11 is adapted to the outer diameter of the bearing outer ring 71, and the inner diameter of the reference plate 11 is adapted to the outer diameter of the small end surface of the bearing inner ring 72. A groove 110 is provided along the circumference of the inner diameter surface of the reference plate 11, and two threaded holes are provided on the top surface of the reference plate 11 in a center-symmetrical manner.

[0020] The outer diameter of the outer ring seat 12 is smaller than the outer diameter of the bearing outer ring 71 , and the inner diameter of the outer ring seat 12 is larger than the inner diameter of the large end surface of the bearing outer ring 71 .

[0021] The inner ring measuring disc 2 includes a circular plate-shaped measuring disc 21 and an annular inner ring seat 22 coaxially connected to the bottom surface of the measuring disc 21; wherein,

[0022] The thickness of the measuring disc 21 is smaller than the width of the groove 110 on the reference disc 11, and the diameter of the measuring disc 21 is adapted to the groove bottom diameter of the groove 110 on the reference disc 11;

[0023] The outer diameter of the inner ring seat 22 matches the outer diameter of the small end surface of the bearing inner ring 72, and the inner diameter of the inner ring seat 22 is larger than the inner diameter of the bearing inner ring 72;

[0024] The outer edge of the measuring disk 21 of the inner ring measuring disk 2 located at the outer end of the inner ring seat 22 is embedded in the groove 110 of the reference disk 11, and can move axially relative to the supporting reference disk 1, and can make the bottom surface of the inner ring seat 22 and the bottom surface of the outer ring seat 12 on the same horizontal plane.

[0025] The meter clamping base 3 is formed by bending a long steel plate into an Ω shape with a top plate 31, two straight plates 32 whose top ends are connected to the two ends of the top plate 31 in a one-to-one correspondence, and two bottom plates 33 whose one ends are connected to the bottom ends of the two straight plates 32 in a one-to-one correspondence. A through hole 310 is opened in the center of the top plate 31, and a countersunk mounting hole 330 is opened on each of the two bottom plates 33. The spacing between the two countersunk mounting holes 330 is adapted to the spacing between the two threaded holes on the reference disk 11, so that the meter clamping base 3 is installed on the top surface of the reference disk 11 by two screws 30, and the through hole 310 on the top plate 31 is coaxial with the reference disk 11.

[0026] The measuring rod sleeve of the measuring gauge 4 is inserted into the through hole 310 on the top plate 31 of the clamping base 3, so that the measuring head of the measuring gauge 4 is against the top surface center of the measuring disk 21 of the inner ring measuring disk 2.

[0027] The weight block bracket 5 is in the shape of an inverted barrel, the inner diameter of the weight block bracket 5 is adapted to the length of the top plate of the clamping seat 3, and the thickness of the side wall of the weight block bracket 5 is adapted to the length of each bottom plate 33 of the clamping seat 3; a cylindrical mounting groove is coaxially opened on the top surface of the weight block bracket 5, and two observation windows 50 are centrally symmetrically opened on the side wall of the weight block bracket 5, and the two observation windows 50 extend from the bottom surface of the side wall to the top surface of the side wall, and the weight block bracket 5 is placed on the top surfaces of the two bottom plates 33 of the clamping seat 3.

[0028] A cylindrical boss adapted to the mounting groove on the top surface of the weight block bracket 5 is provided at the center of the bottom surface of the weight block 6 , so that the weight block 6 is embedded in the mounting groove on the top surface of the weight block bracket 5 .

[0029] The sum of the weights of the weight block 6, the weight block bracket 5 and the supporting reference plate 1 is equal to the load capacity of the measured bearing when it is pressed. The load capacity of the measured bearing when it is pressed can be changed by replacing the weight blocks 6 with different weights.

[0030] See also Figure 3 The device for measuring the end protrusion of a tapered roller bearing of the present invention is to adjust the clamping gauge seat 5 and the measuring gauge 4 before measuring, so that the measuring gauge 4 is within the measuring range, and then make the bottom surface (support point) of the outer ring seat 12 of the supporting reference plate 1 and the bottom surface (support point) of the inner ring seat 22 of the inner ring measuring plate 2 be on the same horizontal plane (see Figure 1), start calibrating the measuring gauge 4, and return the dial reading of the measuring gauge 4 to zero. When the bearing outer ring 71, the bearing inner ring 72 and the cylindrical roller 73 are assembled, place the entire measuring device on the bearing, that is, place the supporting reference disk 1 on the large end face of the bearing outer ring 71, and the inner ring measuring disk 2 on the small end face of the bearing inner ring 72, then place the load block bracket 5 on the clamping table seat 3, and put the load block 6 into the installation groove of the load block bracket 5, gently push the bearing outer ring 71 to rotate and read the pointer number of the measuring gauge 4 at the same time. The maximum value on the measuring gauge 4 is the value of the protrusion of the bearing end face.

[0031] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A device for measuring the end protrusion of a tapered roller bearing, comprising a supporting reference plate, an inner ring measuring plate, a clamping base, a measuring table, a weight block bracket and a weight block; characterized in that: The supporting reference plate comprises a circular reference plate and a circular outer ring seat coaxially connected to the bottom surface of the reference plate; the outer diameter of the reference plate is adapted to the outer diameter of the bearing outer ring, the inner diameter of the reference plate is adapted to the outer diameter of the small end surface of the bearing inner ring, a groove is radially provided on the inner diameter surface of the reference plate, and two threaded holes are centrally symmetrically provided on the top surface of the reference plate; the outer diameter of the outer ring seat is smaller than the outer diameter of the bearing outer ring, and the inner diameter of the outer ring seat is larger than the inner diameter of the large end surface of the bearing outer ring; The inner ring measuring disk comprises a circular plate-shaped measuring disk and an annular inner ring seat coaxially connected to the bottom surface of the measuring disk; the thickness of the measuring disk is smaller than the width of the groove on the reference disk, and the diameter of the measuring disk is adapted to the groove bottom diameter of the groove on the reference disk; the outer diameter of the inner ring seat is adapted to the outer diameter of the small end surface of the inner ring of the bearing, and the inner diameter of the inner ring seat is larger than the inner diameter of the inner ring of the bearing; the outer edge of the measuring disk of the inner ring measuring disk located at the outer end of the inner ring seat is embedded in the groove of the reference disk, and can move axially relative to the supporting reference disk, and can make the bottom surface of the inner ring seat and the bottom surface of the outer ring seat on the same horizontal plane; The meter clamping seat is formed by bending a long steel plate into an Ω shape with a top plate, two straight plates whose top ends are connected to the two ends of the top plate in a one-to-one correspondence, and two bottom plates whose one ends are connected to the bottom ends of the two straight plates in a one-to-one correspondence, and a through hole is provided in the center of the top plate, and a countersunk mounting hole is provided on each of the two bottom plates, and the spacing between the two countersunk mounting holes is adapted to the spacing between the two threaded holes on the reference plate, so that the meter clamping seat is installed on the top surface of the supporting reference plate by two screws, and the through hole on the top plate is coaxial with the reference plate; The measuring rod sleeve of the measuring meter is inserted into the through hole on the top plate of the clamping meter base, so that the measuring head of the measuring meter is against the top center of the inner ring measuring disk; The load-bearing block bracket is in the shape of an inverted cylindrical barrel, the inner diameter of the load-bearing block bracket is adapted to the length of the top plate of the clamping table seat, and the thickness of the side wall of the load-bearing block bracket is adapted to the length of each bottom plate of the clamping table seat; a cylindrical mounting groove is coaxially provided on the top surface of the load-bearing block bracket, and two observation windows are centrally symmetrically provided on the side wall of the load-bearing block bracket, and the two observation windows extend from the bottom surface of the side wall to the top surface of the side wall; the load-bearing block bracket is placed on the top surfaces of the two bottom plates of the clamping table seat; A cylindrical boss adapted to the mounting groove on the top surface of the weight block bracket is provided at the center of the bottom surface of the weight block, so that the weight block is embedded in the mounting groove on the top surface of the weight block bracket.

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