SR value measuring tool

Abstract

The utility model discloses an SR value measuring tool, which relates to the field of bearing manufacturing, and comprises a supporting seat, a clamping block is fixed on the side surface of the supporting seat through adsorption of a permanent magnet, a V-shaped groove is arranged on the clamping block along the vertical direction, and a workpiece is arranged in the V-shaped groove along the vertical direction, so that the workpiece is adsorbed in the V-shaped groove by the permanent magnet by taking a rolling surface as a reference. And the large end face of the workpiece faces upwards and is used for contact detection of a probe of detection equipment. The device is simple and convenient to operate, and can quickly and accurately measure the SR value of the roller.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bearing manufacturing, concretely relates to a SR value measurement frock. BACKGROUND

[0002] The reference end face of the rolling body of the tapered bearing adopts a spherical surface, which can improve the lubrication state between the bearing retaining edge and the rolling body end face, reduce sliding friction, and improve the service life of the bearing. The SR value of the roller refers to the spherical base surface curvature radius of the roller in the tapered roller bearing. The size of this value directly affects the contact surface of the roller and the retaining edge of the inner ring of the bearing, and further affects the load capacity and fatigue strength of the bearing. The measurement accuracy of the SR value is crucial for the quality control of the bearing. In the precision rolling body industry, the measurement error of the SR value will affect the precision of the product, thereby affecting the service life of the bearing. Nowadays, with the rapid development of new energy vehicles, the precision grade requirement of bearings is getting higher and higher, and the detection requirement of the SR value is also getting more and more strict. At present, there is no frock that can conveniently and quickly measure the SR value of the roller. SUMMARY

[0003] The utility model discloses a SR value measurement frock, which is simple and convenient to operate, and can quickly and accurately measure the SR value of the roller.

[0004] The utility model discloses a SR value measurement frock, which is simple and convenient to operate, and can quickly and accurately measure the SR value of the roller.

[0005] As a further technical scheme, the angle of the V-shaped groove is 120°.

[0006] As a further technical scheme, the support seat is fixed with the base of the detection equipment.

[0007] The utility model discloses a SR value measurement frock, which is simple and convenient to operate, and can quickly and accurately measure the SR value of the roller.

[0008] 1. The SR value measurement frock has simple structure design, low production and manufacturing cost, and can be reused. It is simple to operate. Only the measured workpiece needs to be placed in the frock, and the test can be directly performed.

[0009] 2. The detection equipment contact pin directly contacts the large end face of the workpiece, the measurement accuracy is improved, the debugging equipment time is saved, the workpiece rework rate is reduced, the workpiece quality is improved, the workpiece scrap rate is reduced, and the workpiece qualified rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic view of the support seat in the utility model.

[0011] Figure 2 It is the structural schematic view of the permanent magnet in the utility model.

[0012] Figure 3 It is the structural schematic view of the clamping block in the utility model.

[0013] Figure 4 It is the structural schematic view of the workpiece in the utility model.

[0014] Figure 5 It is the structural schematic view when the utility model is detected.

[0015] Mark explanation: support seat 1, side surface 11, permanent magnet 2, clamping block 3, V-shaped groove 31, workpiece 4, big end surface 41, rolling surface 42. Specific implementation

[0016] The utility model will be introduced in detail in combination with the drawings:

[0017] Embodiment: as shown in the accompanying drawings, Figures 1 to 5 This SR value measuring tool, including support seat 1, side surface 11, permanent magnet 2, clamping block 3, V-shaped groove 31, workpiece 4, big end surface 41 and rolling surface 42.

[0018] Reference the accompanying drawings, Figure 1 、 5 In the side surface 11 of support seat 1, clamping block 3 is fixed by permanent magnet 2, as shown in Figure 3 、 5 A V-shaped groove 31 is set up on clamping block 3 along vertical direction, and clamping block 3 adopts metal material and can be adsorbed by permanent magnet 2.Workpiece 4 is placed into V-shaped groove 31 along vertical direction with big end surface 41 upwards, so that workpiece 4 is adsorbed in V-shaped groove 31 by permanent magnet 2 with rolling surface 42 as reference.Due to the big end surface 41 of workpiece 4 upwards, the stylus of detection equipment (profile instrument) can be contacted for detection, with the movement of stylus, the signal of detection equipment is converted into the graph of SR value to be tested, and finally the shape can directly analyze the SR value result data of workpiece 4 to be tested.

[0019] Preferably, the angle of V-shaped groove 31 is 120 °, and support seat 1 is fixed with the base of detection equipment.

[0020] The working process of the utility model: during measurement, the support base 1 and the base of the detection equipment are fixedly installed, according to the specification of the workpiece 4 to be measured, the appropriate clamping block 3 is selected, the clamping block 3 is adsorbed on the side surface of the support base 1 through the permanent magnet 2, the workpiece 4 is placed into the V-shaped groove 31 in the vertical direction in the mode that the large end surface 41 faces upwards, so that the rolling surface 42 of the workpiece 4 is adsorbed in the V-shaped groove 31 by the permanent magnet 2. Then practical detection equipment (profile instrument) is used for detection, when the measuring needle of the detection equipment contacts the large end surface 41 of the measured roller, the detection equipment converts the signal of the moving measuring needle into the SR value of the workpiece to be measured.

[0021] The utility model provides a tool simple structure, and actual operation is convenient. Through a steel ball, the highest point of the workpiece is easily found, and only one high point is found, and the workpiece to be measured is sequentially placed.

[0022] It can be understood that, for those skilled in the art, equivalent replacement or change of the technical scheme and the utility model concept of the utility model should belong to the protection scope of the claims attached to the utility model.

Claims

1. A SR value measuring tool, characterized by: The invention comprises a support seat (1), a side surface (11) of the support seat (1) is fixed with a clamping block (3) by adsorption through a permanent magnet (2), a V-shaped groove (31) is provided on the clamping block (3) along the vertical direction, and a workpiece (4) is placed in the V-shaped groove (31) along the vertical direction, so that the workpiece (4) is adsorbed in the V-shaped groove (31) by the permanent magnet (2) with a rolling surface (42) as a reference, and the large end surface (41) of the workpiece (4) faces upwards for contact detection by a stylus of a detection device.

2. The SR value measuring tool according to claim 1, characterized in that: The angle of the V-shaped groove (31) is 120°.

3. The SR value measuring tool according to claim 1, characterized in that: The support seat (1) is fixed to the base of the detection equipment.

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