A device for measuring the diameter and angle of a tapered roller bearing outer ring

Abstract

The utility model relates to a kind of taper roller bearing outer ring diameter and angle measuring device, belong to the technical field of taper roller bearing outer ring measurement.The taper roller bearing outer ring diameter and angle measuring device, comprising: vernier caliper;Two connecting mechanisms, two The opposite ends of two measuring claws of vernier caliper are fixedly connected respectively;Two steel balls, two The surface of two connecting mechanisms is rotatably connected respectively;The taper roller bearing outer ring diameter and angle measuring device is combined design by vernier caliper, connecting mechanism and steel ball, high-precision measurement is realized.The stable movement of steel ball is ensured by slide rail and sliding block in connecting mechanism, and the accurate contact of steel ball can accurately capture the geometric characteristics of bearing outer ring, thereby providing a low-cost, high-efficiency measurement scheme without three-coordinate measuring instrument.

Description

Technical Field

[0001] This utility model relates to the field of tapered roller bearing outer ring measurement technology, and in particular to a device for measuring the diameter and angle of tapered roller bearing outer ring. Background Technology

[0002] Tapered roller bearings are a type of bearing that uses tapered rollers as rolling elements. Both the inner and outer rings are designed with tapered raceways, and they are separable. These bearings can withstand both radial and axial loads simultaneously and are widely used in automotive wheel hubs, heavy machinery, and other fields.

[0003] Currently, the industry mainly relies on large coordinate measuring machines to measure the outer ring diameter and angle of tapered roller bearings. However, this method is costly, and for companies lacking coordinate measuring equipment, accurately measuring the outer ring angle and diameter remains a major technical challenge. Utility Model Content

[0004] Therefore, it is necessary to provide a device for measuring the outer ring diameter and angle of tapered roller bearings, addressing the problems of high equipment cost and technical difficulty in the accurate measurement of the outer ring diameter and angle of existing tapered roller bearings.

[0005] A device for measuring the outer ring diameter and angle of a tapered roller bearing, comprising:

[0006] Vernier calipers;

[0007] The number of connecting mechanisms is two, and the two connecting mechanisms are respectively fixedly connected to the opposite ends of the two inner measuring jaws of the vernier caliper;

[0008] Two steel balls are rotatably connected to the surfaces of two connecting mechanisms. The opposite ends of the two steel balls are in contact with the opposite ends of the two inner measuring jaws of the vernier caliper. The vertical axis of the steel balls and the vertical axis of the mating parts of the two inner measuring jaws of the vernier caliper are parallel and are both located on the same vertical plane. The lowest point of the steel balls is located below the inner measuring jaws of the vernier caliper.

[0009] In one embodiment, the surface of the steel ball is provided with a perforation, and the connecting mechanism includes a slide rail fixedly connected to the side end of the measuring jaw inside the vernier caliper, a slider slidably connected to the inner side of the slide rail, a connecting rod fixedly connected to the side end of the slider, and one end of the connecting rod passing through the perforation.

[0010] In one embodiment, the perforation is cylindrical in shape, and the axis of the perforation coincides with the horizontal axis of the steel ball.

[0011] In one embodiment, the connecting rod is U-shaped, and the corners of the connecting rod are rounded.

[0012] In one embodiment, the vertical cross-sectional shapes of the slide rail and the slider are both convex and matched, and the height of the slider inside the slide rail is greater than the height of the slide rail opening.

[0013] In one embodiment, the slide rail has a pick-and-place opening on its side, and the pick-and-place opening and the vertical cross-sectional shape of the slider are both convex and matched.

[0014] In one embodiment, the surface of the connecting rod is fixedly connected with two limiting rings, both of which are in contact with the steel ball, and the two limiting rings are symmetrically distributed on both sides of the steel ball's axis.

[0015] In one embodiment, a spirit level is embedded in the top of the slide rail.

[0016] In one embodiment, a mounting base is fixedly connected to the top of each slide rail, and a screw that is threadedly connected to the measuring claw inside the vernier caliper is inserted into the inner side of the mounting base.

[0017] In one embodiment, the number of mounting bases and screws are both two and symmetrically distributed on both sides of the spirit level.

[0018] Beneficial effects

[0019] 1. The aforementioned tapered roller bearing outer ring diameter and angle measuring device achieves high-precision measurement through a combination design of vernier calipers, a connecting mechanism, and steel balls. The slide rail and slider in the connecting mechanism ensure stable movement of the steel balls, while the precise contact of the steel balls accurately captures the geometric features of the bearing outer ring, thus providing a low-cost, high-efficiency measurement solution without the need for a coordinate measuring machine.

[0020] 2. The symmetrical distribution of the leveling track, mounting base, and screws in the device ensures a secure connection between the vernier caliper and the connecting mechanism, further enhancing measurement stability. By replacing steel balls of different radii and recording data with the vernier caliper, this device can quickly calculate the diameter and angle of the bearing outer ring, significantly reducing the company's reliance on expensive measuring equipment. It is suitable for inspecting tapered roller bearings of various specifications. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the connection between the connecting mechanism and the steel ball in this utility model;

[0024] Figure 3 This is a cross-sectional schematic diagram of the connecting mechanism and the steel ball in this utility model;

[0025] Figure 4 This is an exploded view of the connecting mechanism and the steel ball in this utility model;

[0026] Figure 5 This is a cross-sectional view showing the measurement of the outer ring diameter and angle of the tapered roller bearing in this utility model.

[0027] Figure label:

[0028] 100. Vernier caliper; 200. Connecting mechanism; 210. Slide rail; 211. Pick-up / drop-off port; 220. Slider; 230. Connecting rod; 240. Limiting ring; 250. Spirit level; 260. Mounting base; 270. Screw; 300. Steel ball; 310. Perforation. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The following is combined with Figures 1-5 This invention describes a device for measuring the outer ring diameter and angle of a tapered roller bearing.

[0031] In one embodiment, a device for measuring the outer ring diameter and angle of a tapered roller bearing includes:

[0032] Vernier caliper 100, the vernier caliper 100 includes but is not limited to the following structure:

[0033] Main scale: Fixed part, marked with millimeter graduations (0-150mm or longer);

[0034] Vernier scale: The sliding part, including the digital display and the zeroing button;

[0035] Measuring jaws:

[0036] External measuring jaws (lower end): measure outer diameter / thickness;

[0037] Internal measuring jaws (upper end): measure inner diameter / groove width;

[0038] Depth bar: A telescopic bar at the end used for measuring depth;

[0039] Tighten the screws: to fix the position of the vernier caliper.

[0040] How to use a Vernier 100 caliper:

[0041] Zeroing: Close the measuring jaws and press the "ZERO" key to zero;

[0042] External dimension measurement: Clamp the object to be measured and read the digital display value;

[0043] Internal dimension measurement: Insert the internal measuring claw into the hole and gently expand it until it fits snugly;

[0044] Depth measurement: Extend the depth rod to the bottom while it is pressed against the reference surface.

[0045] like Figure 2 , Figure 3 and Figure 4 As shown, there are two connecting mechanisms 200, which are respectively fixedly connected to the opposite ends of the two inner measuring jaws of the vernier caliper 100. The surface of the steel ball 300 has a through hole 310. Each connecting mechanism 200 includes a slide rail 210 fixedly connected to the side end of the inner measuring jaw of the vernier caliper 100. A slider 220 is slidably connected to the inner side of the slide rail 210. A connecting rod 230 is fixedly connected to the side end of the slider 220, and one end of the connecting rod 230 passes through the through hole 310. The connecting rod 230 is U-shaped with rounded corners. The vertical cross-sectional shapes of the slide rail 210 and the slider 220 are both matching convex shapes. The slider 220 is disposed inside the slide rail 210. The height is greater than the height of the opening of the slide rail 210; the slide rail 210 has a pick-and-place port 211 on its side, and the vertical cross-sectional shape of the pick-and-place port 211 and the slider 220 are both convex shapes that match each other; the surface of the connecting rod 230 is fixedly connected with two limiting rings 240, both of which are in contact with the steel ball 300, and the two limiting rings 240 are symmetrically distributed on both sides of the axis of the steel ball 300; a spirit level 250 is embedded in the top of the slide rail 210; a mounting base 260 is fixedly connected to the top of the slide rail 210, and a screw 270 that is threaded to the measuring claw of the vernier caliper 100 is inserted into the inner side of the mounting base 260; there are two mounting bases 260 and two screws 270, which are symmetrically distributed on both sides of the spirit level 250.

[0046] In this embodiment, two threaded grooves are first horizontally opened on the side end of the measuring jaw inside the vernier caliper 100. Then, the slide rail 210 is horizontally fixed to the side end of the measuring jaw inside the vernier caliper 100 by the mounting base 260 and screws 270. When the user needs to use the corresponding size of steel ball 300, he / she only needs to slide the connecting rod 230 on the steel ball 300 along with the two sliders 220 into the corresponding slide rail 210, and ensure that the two steel balls 300 are in contact with the opposite ends of the two measuring jaws inside the vernier caliper 100, so that the measurement operation can be performed normally.

[0047] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, there are two steel balls 300, which are rotatably connected to the surfaces of the two connecting mechanisms 200. The opposite ends of the two steel balls 300 are in contact with the opposite ends of the two inner measuring jaws of the vernier caliper 100. The vertical axis of the steel ball 300 and the vertical axis of the mating part of the two inner measuring jaws of the vernier caliper 100 are parallel and are both set in the same vertical plane. The lowest point of the steel ball 300 is located below the inner measuring jaw of the vernier caliper 100. The perforation 310 is cylindrical in shape, and the axis of the perforation 310 coincides with the horizontal axis of the steel ball 300.

[0048] According to the instruction manual Figure 5 As shown, the procedure for measuring the outer ring diameter and angle of this tapered roller bearing is as follows:

[0049] I. Explanation of Dimension Symbols:

[0050] E: Diameter of the outer ring raceway of the tapered roller bearing under test (unknown); α: Angle of the outer ring raceway of the tapered roller bearing under test (unknown); R1: Radius of the small-sized steel ball (300 mm) used for measurement (known); R2: Radius of the large-sized steel ball (300 mm) used for measurement (known);

[0051] II. Measurement Procedure:

[0052] 1. Place the outer ring of the tapered roller bearing on a horizontal table;

[0053] 2. Slide the connecting rods 230 and two sliders 220 on the two steel balls 300 with radius R1 into the corresponding slide rails 210, ensuring that the two steel balls 300 are in contact with the opposite ends of the two inner measuring jaws of the vernier caliper 100. Then, move the two steel balls 300 to the inner side of the bearing raceway and to the horizontal table. Then, stretch the vernier caliper 100, which drives the steel balls 300 to move through the connecting mechanism 200 until the two steel balls 300 are simultaneously pressed against the horizontal worktable and the bearing raceway surface. Record the maximum distance D1 between the two steel balls 300 using the vernier caliper 100. ′ ;

[0054] 3. Following the procedure in step 2, place two steel balls 300 with a radius of R2 and record the distance D2 between the two steel balls 300 using vernier calipers 100. ′ ;

[0055] III. Calculation Process

[0056] Given: D1 ′ D2 ′ R1, R2.

[0057] Then we have: D1 = D1 ′ +2R1;D2=D2 ′ +2R2

[0058] From geometric relations, we know that O'B = R2 - R1;

[0059] In Rt△O ′ In OB: Let ∠O ′ OB = β, O'B = R2 - R1, OB = (D2 - D1) / 2, therefore: tanβ = (R2 - R1) / [(D2 - D1) / 2]

[0060] Then: β=arctan{(R2-R1) / [(D2-D1) / 2]}

[0061] From geometric relations, we know that β=∠CAO ′ AO ′ Let be the angle bisector of ∠DAC, therefore ∠DAC = 2β.

[0062] Therefore, we have: α = 2β - 90°.

[0063] In right triangle AO′B′: Given ∠AO′B′=β, AB′=R1, O′B′=R1 / tanβ, then

[0064]

[0065] It should be noted that the EEEE and other components mentioned above are devices with relatively mature existing technologies. The specific model can be selected according to actual needs. HHHH power supply can be powered by the built-in power supply or by AC power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0066] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for measuring the outer ring diameter and angle of a tapered roller bearing, characterized in that, include: Vernier calipers (100); Two connecting mechanisms (200) are provided, and the two connecting mechanisms (200) are respectively fixedly connected to the opposite ends of the two inner measuring jaws of the vernier caliper (100); Two steel balls (300) are rotatably connected to the surfaces of two connecting mechanisms (200). The opposite ends of the two steel balls (300) are in contact with the opposite ends of the two inner measuring jaws of the vernier caliper (100). The vertical axis of the steel balls (300) and the vertical axis of the mating part of the two inner measuring jaws of the vernier caliper (100) are parallel and are both set on the same vertical plane. The lowest point of the steel balls (300) is set below the inner measuring jaws of the vernier caliper (100).

2. The tapered roller bearing outer ring diameter and angle measuring device according to claim 1, characterized in that, The surface of the steel ball (300) is provided with a perforation (310). The connecting mechanism (200) includes a slide rail (210) fixedly connected to the side end of the measuring claw inside the vernier caliper (100). A slider (220) is slidably connected to the inner side of the slide rail (210). A connecting rod (230) is fixedly connected to the side end of the slider (220). One end of the connecting rod (230) passes through the perforation (310).

3. The tapered roller bearing outer ring diameter and angle measuring device according to claim 2, characterized in that, The perforation (310) is cylindrical in shape, and the axis of the perforation (310) coincides with the horizontal axis of the steel ball (300).

4. The tapered roller bearing outer ring diameter and angle measuring device according to claim 2, characterized in that, The connecting rod (230) is U-shaped, and the corners of the connecting rod (230) are rounded.

5. The tapered roller bearing outer ring diameter and angle measuring device according to claim 2, characterized in that, The vertical cross-sectional shapes of the slide rail (210) and the slider (220) are both convex shapes that match each other. The height of the slider (220) inside the slide rail (210) is greater than the height of the opening of the slide rail (210).

6. The tapered roller bearing outer ring diameter and angle measuring device according to claim 2, characterized in that, The slide rail (210) has a pick-up and put-out opening (211) on its side end. The vertical cross-sectional shape of the pick-up and put-out opening (211) and the slider (220) are both convex shapes that match each other.

7. The tapered roller bearing outer ring diameter and angle measuring device according to claim 2, characterized in that, The surface of the connecting rod (230) is fixedly connected with two limiting rings (240), both of which are in contact with the steel ball (300). The two limiting rings (240) are symmetrically distributed on both sides of the axis of the steel ball (300).

8. The tapered roller bearing outer ring diameter and angle measuring device according to claim 2, characterized in that, A spirit level (250) is embedded in the top of the slide rail (210).

9. The tapered roller bearing outer ring diameter and angle measuring device according to claim 8, characterized in that, The top of each slide rail (210) is fixedly connected to a mounting base (260), and the inner side of the mounting base (260) is fitted with a screw (270) that is threaded to the measuring claw inside the vernier caliper (100).

10. The tapered roller bearing outer ring diameter and angle measuring device according to claim 9, characterized in that, The number of mounting bases (260) and screws (270) are both two and are symmetrically distributed on both sides of the spirit level (250).

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