Measurement auxiliary tool

Abstract

The utility model discloses an auxiliary measuring tool, which is used for fixing the position of a bearing, and comprises a tool body, a first positioning part, a second positioning part, a third positioning part, a fourth positioning part, a fifth positioning part and a sixth positioning part, and is characterized in that the tool body is provided with a containing cavity used for containing the bearing, and one end of the containing cavity along a first direction is provided with a passing opening; the inner circumferential face of the containing cavity comprises a plurality of limiting structures which extend in the circumferential direction of the containing cavity and are sequentially arranged in the axial direction of the containing cavity, each limiting structure comprises an axial limiting face and a circumferential limiting face, the axial end of each circumferential limiting face is connected with the outer circumferential edge of the corresponding axial limiting face, and each axial limiting face is used for being matched with the end face of the axial end of the bearing; and in any two adjacent limiting structures, the outer diameter of the axial limiting surface of the limiting structure away from the passing opening is smaller than or equal to the inner diameter of the axial limiting surface of the limiting structure close to the passing opening. According to the measuring auxiliary tool provided by the embodiment of the utility model, the positions of various bearings with different models can be fixed, and the economical efficiency is good.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement assistance, and more specifically, to a measurement assistance tooling. Background Art

[0002] The speed reducer includes a front housing and a rear housing. An input shaft, an intermediate shaft and an output shaft are arranged between the front housing and the rear housing. Bearings are arranged at both ends of the above three shafts. Correspondingly, both the front housing and the rear housing are formed with bearing chambers for installing the bearings. Since the shafts have certain tolerances during manufacturing, after assembly, there will be a certain gap between the bearings installed at the ends of the shafts and the bottoms of the bearing chambers. The existence of the gap may cause the bearings to shift relative to the bearing chambers. Therefore, in actual work, during the assembly process of the speed reducer, gaskets with appropriate sizes are selected and installed at the bottoms of the bearing chambers to offset the above gap and apply a certain pre-tightening force to the bearings. To ensure that the size of the gasket matches the above gap, it is first necessary to fix the position of the bearing to obtain an accurate gap value, and then select a gasket with an appropriate size according to the gap value.

[0003] In the related art, a shaft and the bearings at both ends of the shaft form a shaft system. Appropriate-sized gaskets need to be installed at each shaft system. The bearing models in different shaft systems may be different, the sizes of different types of bearings are different, and bearings of different sizes need to be fixed by different measurement assistance toolings, resulting in a large number of required measurement assistance toolings and high costs. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a measurement assistance tooling, which can fix a variety of bearings of different models, requires a small number of measurement assistance toolings, and has a relatively low cost.

[0005] The measurement assistance tooling according to an embodiment of the utility model includes: a tooling body, the tooling body has a receiving cavity for receiving the bearing, one end of the receiving cavity in the first direction has a through opening for the bearing to pass through and move into the receiving cavity, the inner peripheral surface of the receiving cavity includes a plurality of limiting structures, the limiting structures extend along the circumferential direction of the receiving cavity, and the limiting structure includes an axial limiting surface and a circumferential limiting surface. The axial end of the circumferential limiting surface is connected to the outer peripheral edge of the corresponding axial limiting surface. The axial limiting surface is used to cooperate with the end face of the axial end of the bearing, and the circumferential limiting surface is used to cooperate with the outer peripheral surface of the bearing. The plurality of limiting structures are arranged in sequence along the axial direction of the receiving cavity. Among any two adjacent limiting structures, the outer diameter of the axial limiting surface of the limiting structure far from the through opening is less than or equal to the inner diameter of the axial limiting surface of the limiting structure close to the through opening.

[0006] The measurement auxiliary tooling according to the embodiments of the present utility model can fix the positions of various different models of bearings, which is conducive to completing the fixation of more different models of bearings with a smaller number of measurement auxiliary toolings, reducing the number of measurement auxiliary toolings required to fix the positions of various bearings, having better economy, and higher efficiency in fixing different bearings.

[0007] In addition, the measurement auxiliary tooling according to the above embodiments of the present utility model may further have the following additional technical features:

[0008] According to some embodiments of the present utility model, the limiting structure continuously extends along the circumferential direction of the accommodating cavity; alternatively, the circumferential wall of the accommodating cavity is provided with a radially penetrating break, and the break extends axially and communicates with the through opening.

[0009] According to some embodiments of the present utility model, the other end of the accommodating cavity along the first direction is provided with a connecting portion, the circumferential wall of the accommodating cavity is provided with a plurality of the breaks, and the portion of the circumferential wall of the accommodating cavity between two adjacent breaks is connected to the connecting portion.

[0010] According to some embodiments of the present utility model, the plurality of breaks are evenly spaced apart along the circumferential direction of the accommodating cavity.

[0011] According to some embodiments of the present utility model, the connecting portion is provided with an avoidance opening, and the avoidance opening is axially opposite to and communicates with the break.

[0012] According to some embodiments of the present utility model, the radial width of the axial limiting surface is less than or equal to 4 mm.

[0013] According to some embodiments of the present utility model, the measurement auxiliary tooling includes a counterweight, and the counterweight is connected to the tooling body.

[0014] According to some embodiments of the present utility model, the axis of the accommodating cavity passes through the center of gravity of the counterweight.

[0015] According to some embodiments of the present utility model, the counterweight is detachably connected to the tooling body, there are a plurality of the counterweights, and the plurality of counterweights are alternatively connected to the tooling body, and the weights of different counterweights are different.

[0016] According to some embodiments of the present utility model, a protrusion is provided at one end of the tooling body away from the through opening in the first direction, the protrusion is provided with an external thread, the counterweight is provided with a groove, the groove is provided with an internal thread, and the counterweight is detachably connected to the tooling body through the internal thread and the external thread.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a measurement auxiliary tooling according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic structural diagram of a speed reducer;

[0021] Figure 3 is Figure 2 a top view of

[0022] Figure 4 is a schematic structural diagram of the rear housing of the speed reducer;

[0023] Figure 5 is Figure 4 a cross-sectional view along the direction shown by the A-A line;

[0024] Figure 6 is a schematic diagram of the measurement auxiliary tooling according to an embodiment of the present utility model for the speed reducer;

[0025] Figure 7 is a schematic diagram of the mating structure of the measurement auxiliary tooling according to an embodiment of the present utility model with the input shaft of the speed reducer;

[0026] Figure 8 is a schematic diagram of the mating structure of the measurement auxiliary tooling according to an embodiment of the present utility model with the intermediate shaft of the speed reducer;

[0027] Figure 9 is a schematic diagram of the mating structure of the measurement auxiliary tooling according to an embodiment of the present utility model with the output shaft of the speed reducer;

[0028] Figure 10 is a schematic diagram of the measurement auxiliary tooling according to an embodiment of the present utility model for the speed reducer, in which the rear housing is not shown;

[0029] Figure 11 is Figure 10 a cross-sectional view along the direction shown by the B-B line;

[0030] Figure 12 is Figure 2 a cross-sectional view of

[0031] Figure 13 is Figure 12 a partial enlarged view of the circled C in

[0032] Figure 14 is a schematic structural view of a tooling body according to an embodiment of the present utility model;

[0033] Figure 15 is Figure 14 the front view of;

[0034] Figure 16 is Figure 14 the top view of;

[0035] Figure 17 is Figure 14 the bottom view of;

[0036] Figure 18 is Figure 16 a sectional view taken along the direction shown by the D-D line;

[0037] Figure 19 is an exploded view of a measurement auxiliary tooling according to an embodiment of the present utility model;

[0038] Figure 20 is Figure 1 the top view of;

[0039] Figure 21 is Figure 20 a sectional view taken along the direction shown by the E-E line.

[0040] Reference numerals:

[0041] measurement auxiliary tooling 100; bearing 200; shaft 300; front housing 400; rear housing 410; gasket 500; speed reducer 600;

[0042] tooling body 10; accommodation cavity 11; limiting structure 12; axial limiting surface 121; circumferential limiting surface 122; fracture 13; connecting portion 14; avoidance opening 141; protrusion 15;

[0043] weight member 20; groove 21; axis F. Detailed implementation manners

[0044] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "width", "upper", "lower", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0046] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. The meaning of "a plurality" is two or more. That the first feature is "above" or "below" the second feature may include direct contact between the first and second features, or may include that the first and second features are not in direct contact but in contact through additional features therebetween. That the first feature is "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the first feature has a higher horizontal height than the second feature.

[0047] The measurement auxiliary tooling 100 according to an embodiment of the present utility model will be described below with reference to the drawings.

[0048] Refer to Figures 1 - 21 As shown, the measurement auxiliary tooling 100 according to an embodiment of the present utility model is used to fix the position of the bearing 200. The measurement auxiliary tooling 100 may include a tooling body 10.

[0049] Specifically, the tooling body 10 has a receiving cavity 11 for receiving the bearing 200. One end of the receiving cavity 11 in the first direction has a through-opening for the bearing 200 to pass through and move into the receiving cavity 11. The inner peripheral surface of the receiving cavity 11 includes a plurality of limiting structures 12. The limiting structures 12 extend along the circumferential direction of the receiving cavity 11. The limiting structures 12 include an axial limiting surface 121 and a circumferential limiting surface 122. One axial end of the circumferential limiting surface 122 is connected to the outer periphery of the corresponding axial limiting surface 121. The axial limiting surface 121 is used to cooperate with the end face of one axial end of the bearing 200, and the circumferential limiting surface 122 is used to cooperate with the outer periphery of the bearing 200. The plurality of limiting structures 12 are arranged in sequence along the axial direction of the receiving cavity 11. Among any two adjacent limiting structures 12, the outer diameter of the axial limiting surface 121 of the limiting structure 12 away from the through-opening is less than or equal to the inner diameter of the axial limiting surface 121 of the limiting structure 12 close to the through-opening.

[0050] The "axial direction" in the axial limiting surface 121 refers to the extending direction of the axis F of the accommodating cavity 11, the "axial direction" of the bearing 200 refers to the extending direction of the axis of the bearing 200, and the axis F of the accommodating cavity 11 can coincide with the axis of the bearing 200 installed in the accommodating cavity 11. The first direction can be parallel to the axial direction or form an angle therewith, and the through opening is an open opening. For example, in some embodiments, as Figures 1 - 11 shown, the axis F of the accommodating cavity 11 and the axis of the bearing 200 installed in the accommodating cavity 11 both extend in the up-and-down direction and coincide with each other. The first direction is parallel to the up-and-down direction. The lower end of the accommodating cavity 11 has a through opening, and the bearing 200 can be inserted into the accommodating cavity 11 from the bottom up through the through opening.

[0051] The inner peripheral surface of the accommodating cavity 11 includes a plurality of limiting structures 12. The limiting structures 12 extend circumferentially along the accommodating cavity 11 to form a circle or a part of a circle to cooperate with the circular shape of the bearing 200, facilitating the limitation of the bearing 200. In the limiting structure 12, the axial limiting surface 121 extends into a ring to cooperate with the axial end face of the bearing 200, and the bearing 200 is axially limited by the axial limiting surface 121. The circumferential limiting surface 122 extends into a cylindrical surface to cooperate with the outer circumference of the bearing 200, and the bearing 200 is limited in the radial direction (the direction perpendicular to the axial direction) of the bearing 200 by the circumferential limiting surface 122, so that the bearing 200 installed in the accommodating cavity 11 is not prone to radial shaking. Here, the cooperation can be fitting, pressing, etc.

[0052] The bearing 200 installed in the accommodating cavity 11 is limited by the limiting structure 12 to fix the position of the bearing 200, facilitating the subsequent dimension measurement work, so that the operator can select a gasket 500 with a suitable size that matches the bearing 200 according to the measurement results.

[0053] One measurement auxiliary tool 100 or two measurement auxiliary tools 100 can be used to assist in the measurement work. For example, in some embodiments, as Figures 2 - 13 shown, the speed reducer 600 includes a front housing 400, a rear housing 410, and three shaft systems. The three shaft systems are respectively the input shaft and its two end bearings, the intermediate shaft and its two end bearings, and the output shaft and its two end bearings. A gasket 500 with a suitable size needs to be installed at each shaft system.

[0054] The measurement work is carried out by one measurement auxiliary tool 100, as Figures 7 - 11As shown, lay the front housing 400 and the three shaft systems flat. At one of the shaft systems, install the upper bearing 200 into the accommodation cavity 11 of the measurement auxiliary tooling 100, and apply a downward pressure to the bearing 200 through the measurement auxiliary tooling 100 to fix the position of the bearing 200, so that the upper bearing 200, the shaft 300, the lower bearing 200 and the front housing 400 are pressed tightly in the up and down direction. After fixing the position of the bearing 200, measure the gap H1 between the upper end face of the upper bearing 200 and the upper end face of the front housing 400 with a height gauge, and combine the known gap H2 between the upper end face of the front housing 400 and the bottom of the upper bearing chamber (i.e., Figure 5 and Figure 12 the H2 in Figures 12 - 13 ), and the gap H3 between the upper end face of the upper bearing 200 and the bottom of the upper bearing chamber (i.e.,

[0055] the H3 in Figure 12 ) can be obtained through simple calculation (H2 - H1 = H3), so as to select a gasket 500 with a suitable size through H3 and install the gasket 500 between the upper bearing 200 and the bottom of the upper bearing chamber. Figure 12 the H5 in Figure 12 ), and H1 (i.e.,

[0056] In some related technologies, the measurement auxiliary tooling directly presses against the bearing end face to fix the position of the bearing. There is no limiting structure on the outer peripheral surface of the bearing, so that the bearing is prone to tilt during the process of fixing the bearing, resulting in subsequent measurement data distortion, and then leading to incorrect gasket selection. The reducer product is prone to failure, and even the bearing may fall during the process of fixing the bearing, causing damage to the reducer and injury to the operator, etc., with poor safety.

[0057] In this application, through the cooperation of the circumferential limiting surface 122 and the outer peripheral surface of the bearing 200, the bearing 200 is not prone to tilt or even fall, the subsequent measurement data is not prone to distortion, which is beneficial to selecting a gasket 500 with a suitable size. The reducer 600 product is not prone to failure due to incorrect gasket 500 selection, and the bearing 200 is not prone to fall, so the reducer 600 is not prone to damage and the operator is not prone to injury, with better safety.

[0058] Each limiting structure 12 can be used to fix the position of a bearing 200 of a certain model. Among two adjacent limiting structures 12, the outer diameter of the axial limiting surface 121 of the limiting structure 12 far from the through port 111 is less than or equal to the inner diameter of the axial limiting surface 121 of the limiting structure 12 close to the through port 111. Different bearings 200 with different outer diameters can be fixed by different limiting structures 12. For example, in some specific embodiments, as Figure 1 shown, the inner peripheral surface of the accommodating cavity 11 includes three limiting structures 12 arranged in sequence in the up-down direction. Chamfering is performed at the connection of adjacent limiting structures 12. Among two adjacent limiting structures 12, the outer diameter of the axial limiting surface 121 in the upper limiting structure 12 is less than the inner diameter of the axial limiting surface 121 in the lower limiting structure 12, so as to fix the position of the bearing 200 with a smaller outer diameter through the upper limiting structure 12 and fix the position of the bearing 200 with a larger outer diameter through the lower limiting structure 12.

[0059] During the installation and maintenance process of the reducer 600, it is necessary to fix bearings 200 of multiple different models. In some related technologies, different models of bearings need to be fixed by different measurement auxiliary tooling. The number of required measurement auxiliary tooling is large, the BOM (Bill of Materials) cost is high, and there are many measurement auxiliary tooling that need to be maintained, resulting in high maintenance costs. However, in this application, a tooling body includes multiple limiting structures, enabling a measurement auxiliary tooling to fix multiple bearings of different models. The number of required measurement auxiliary tooling is small, the BOM cost is low, and there are fewer measurement auxiliary tooling that need to be maintained, resulting in low maintenance costs.

[0060] For scenarios where it is necessary to fix bearings 200 of multiple different models, such as fixing bearings 200 of different models in the same reducer 600, or fixing bearings 200 of different models between different reducers 600, by using the measurement auxiliary tooling 100 of this application, the fixing of multiple bearings 200 of different models can be completed with a relatively small number of measurement auxiliary tooling 100. Even the fixing of all bearings 200 of different models in the scenario can be completed by one measurement auxiliary tooling 100. For example, fixing three types of bearings 200 at three shaft systems in the same reducer 600, without having to frequently search for and replace the measurement auxiliary tooling 100. The operation of fixing multiple bearings 200 is convenient and efficient, which is conducive to improving the overall efficiency of bearing fixing and measurement, and achieving cost reduction and efficiency increase.

[0061] The measurement auxiliary tooling 100 according to the embodiment of the present utility model can fix the positions of multiple bearings 200 of different models, which is conducive to completing the fixing of more bearings 200 of different models with a relatively small number of measurement auxiliary tooling 100, reducing the number of measurement auxiliary tooling 100 required to fix the positions of multiple bearings 200, having better economy, and having a higher efficiency in fixing different bearings 200.

[0062] In some embodiments of the present utility model, the limiting structure 12 extends continuously along the circumferential direction of the accommodation cavity 11, which is beneficial to increasing the mating area between the tooling body 10 and the bearing 200, making it difficult for the bearing 200 installed in the accommodation cavity 11 to move relative to the tooling body 10, such as offsetting relative to the axis F of the accommodation cavity 11, and making the effect of the tooling body 10 fixing the bearing 200 better.

[0063] The limiting structure 12 extends continuously along the circumferential direction of the accommodation cavity 11, and the gap between the upper end face of the tooling body 10 and the upper end face of the front shell 400 can be measured, and then subtracting the distance from the upper end face of the tooling body 10 to the axial limiting surface 121 cooperating with the upper bearing 200 to obtain H1 for calculating the gap H3.

[0064] In some other embodiments, such as Figure 1 and Figures 14 - 16 As shown, the circumferential wall of the accommodation cavity 11 is provided with a radially penetrating break 13, and the break 13 extends axially and communicates with the through opening. The break 13 communicates the accommodation cavity 11 and the outside in the radial direction, so that the end face part of the bearing 200 installed in the accommodation cavity 11 is exposed, so as to directly measure the distance between the end face of the bearing 200 and other components by using a height gauge, reducing the calculation steps and being beneficial to improving the calculation efficiency and calculation accuracy. The break 13 communicates with the through opening axially, and can expose the end face part of the bearing 200 cooperating with each limiting structure 12, simplifying the calculation steps after the measurement auxiliary tooling 100 fixes each bearing 200.

[0065] The break 13 is beneficial to avoiding other components and reducing the interference of other components, so that when the tooling body 10 applies pressure to fix the bearing 200, the bearing 200 is not easily deflected, improving the accuracy of subsequent measurement data. For example, in a scenario including three shaft systems and a front shell 400, as Figure 10 shown, the break 13 can be used to avoid the bearings 200 of adjacent other shaft systems, reducing the interference of the bearings 200 of other shaft systems on the fixed bearing 200.

[0066] For example, in some specific embodiments, such as Figure 1 and Figure 14 shown, the break 13 penetrates radially to communicate the accommodation cavity 11 and the outside and communicates downward with the through opening, so that each limiting structure 12 is disconnected at the break 13 along the circumferential direction of the accommodation cavity 11, and then the end face part of the bearing 200 cooperating with each limiting structure 12 is exposed, and the disconnected part of the circumferential wall of the accommodation cavity 11 can be used to avoid other components.

[0067] In some embodiments provided with the break 13, such as Figure 1 、 Figure 14 and Figures 16 - 17As shown, at the other end of the accommodation cavity 11 along the first direction, there is a connecting portion 14. The peripheral wall of the accommodation cavity 11 is provided with a plurality of breaks 13, and the portion of the peripheral wall of the accommodation cavity 11 between two adjacent breaks 13 is connected to the connecting portion 14. The connecting portion 14 faces the through-opening along the first direction.

[0068] By providing a plurality of breaks 13 on the peripheral wall of the accommodation cavity 11, a plurality of regions on the end face of the bearing 200 loaded into the accommodation cavity 11 are exposed, enabling separate measurement operations on the plurality of exposed portions of the end face of the bearing 200, so as to perform operations such as averaging a plurality of measurement values to improve the measurement accuracy, and further improve the subsequent calculation accuracy, which is beneficial for selecting a gasket 500 with a more suitable size.

[0069] Through the connecting portion 14, the plurality of portions of the peripheral wall of the accommodation cavity 11 disconnected by the breaks 13 can be connected into a whole, making it difficult for the different disconnected portions of the peripheral wall of the accommodation cavity 11 to move relative to each other, and having a better fixing effect on the bearing 200.

[0070] In some embodiments, such as Figure 1 、 Figure 14 and Figures 16 - 17 As shown, the plurality of breaks 13 are evenly spaced along the circumferential direction of the accommodation cavity 11, making the plurality of regions on the end face of the bearing 200 in contact with the tooling body 10 centrosymmetric about the axis F, so that the pressure applied to the bearing 200 by the tooling body 10 can be evenly pressed against the bearing 200 without bias, making it difficult for the bearing 200 and other mating components such as the shaft 300 to be axially compressed and relatively skewed during the fixing process, and having a better effect on fixing the position of the bearing 200.

[0071] In some embodiments, such as Figure 1 and Figures 14 - 17 As shown, the connecting portion 14 is provided with an avoidance opening 141. The avoidance opening 141 is axially opposite to and communicates with the break 13, reducing the occlusion of the break 13 on the side axially away from the through-opening, making the effect of the communicating avoidance opening 141 and break 13 avoiding other components better, and being beneficial for increasing the operating space of the height gauge and facilitating the measurement operation after fixing the position of the bearing 200.

[0072] In some embodiments of the present invention, such as Figure 18As shown, the radial width W of the axial limiting surface 121 is less than or equal to 4 mm. Although the sizes of bearings 200 of different models are different, basically, the size of the outer ring of the bearing 200 (the radial distance between the outer and inner circumferences of the outer ring) is greater than or equal to 4 mm. For example, the size of the outer ring of the bearing 200 is 4 mm, 5 mm, etc. When W > 4 mm, it is easy for the axial limiting surface 121 to press against the gap between the outer ring and the inner ring, wasting a part of the pressure, and even causing the axial limiting surface 121 to press against the inner ring, ignoring the influence of the axial clearance of the bearing 200. In this application, W ≤ 4 mm can ensure that after the bearing 200 is installed in the accommodation cavity 11, the corresponding axial limiting surface 121 is completely in contact with the end face of the outer ring of the bearing 200, so as to completely transfer the force applied through the tooling body 10 to the bearing 200, and the fixing effect on bearings 200 of various models is better.

[0073] In some embodiments of the present utility model, as Figure 1 and Figures 19 - 21 shown, the measurement auxiliary tooling 100 includes a counterweight 20, and the counterweight 20 is connected to the tooling body 10. The counterweight 20 can apply pressure to the tooling body 10 and then apply pressure to the bearing 200 installed in the accommodation cavity 11, reducing the use of additional force-applying devices and making the operation convenient.

[0074] In some embodiments, as Figure 19 shown, the axis F of the accommodation cavity 11 passes through the center of gravity of the counterweight 20, so that the pressure applied by the counterweight 20 to the accommodation cavity 11 can be evenly applied to the tooling body 10 without bias. Furthermore, the tooling body 10 can apply force to the bearing 200 evenly, so that after fixing, the bearing 200 and mating components such as the shaft 300 are axially pressed tightly and are not prone to relative skew, and the effect of fixing the position of the bearing 200 is better.

[0075] In some embodiments, the counterweight 20 is detachably connected to the tooling body 10. There are multiple counterweights 20, and multiple counterweights 20 are selectively connected to the tooling body 10, and the weights of different counterweights 20 are different. The detachable connection between the counterweight 20 and the tooling body 10 is convenient for maintenance, replacement of the counterweight 20 or the tooling body 10, reducing the maintenance cost. Connecting the same tooling body 10 with counterweights 20 of different weights can obtain a measurement auxiliary tooling 100 that can apply different pressures, so as to select counterweights 20 of different weights to connect with the working body 10 according to the different pressures required for different models of bearings 200 and the pressures required for bearings 200 in different scenarios. The application range is wide, and the number of required tooling bodies 10 is reduced, and the economy is good.

[0076] In some related technologies, a measurement auxiliary tooling is directly pressed against the end face of the bearing to fix the position of the bearing, without using a counterweight. As a result, it is difficult to control the magnitude of the pressure exerted by the measurement auxiliary tooling on the bearing, and problems such as insufficient pressure on the bearing, which leads to loose pressing, inaccurate subsequent measurement dimensions, and inappropriate selection of gaskets, are likely to occur, making the reducer product prone to early damage or abnormal noise, or excessive pressure on the bearing that may damage the bearing.

[0077] In this application, a counterweight 20 is used to apply pressure to the bearing 200. By selecting counterweights 20 of different weights, different magnitudes of pressure can be applied to the bearing 200. The pressure is controllable, and problems such as excessive or insufficient pressure are not likely to occur, making the bearing 200 less likely to be damaged and facilitating the selection of a suitable gasket 500.

[0078] The detachable connection between the tooling body 10 and the counterweight 20 can be a screw connection, a snap connection, etc. For example, in some embodiments, as Figure 19 and Figure 21 shown, a protrusion 15 is provided at one end of the tooling body 10 away from the through-opening in the first direction. The protrusion 15 is provided with an external thread, and the counterweight 20 is provided with a groove 21. The groove 21 is provided with an internal thread. The counterweight 20 and the tooling body 10 are detachably connected through the internal thread and the external thread, which is convenient for disassembly and assembly. Moreover, after installation, the counterweight 20 and the tooling body 10 are not likely to shake relative to each other, and the connection is firm and stable.

[0079] Other components and operations of the measurement auxiliary tooling 100 according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0080] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0081] In the description of this specification, the descriptions referring to terms such as "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0082] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A measurement auxiliary tooling (100), characterized in that, For fixing the position of a bearing (200), the measurement auxiliary tooling (100) includes: A tooling body (10), the tooling body (10) having a receiving cavity (11) for receiving the bearing (200), one end of the receiving cavity (11) in a first direction having a through-opening for the bearing (200) to pass through and move into the receiving cavity (11). The inner peripheral surface of the receiving cavity (11) includes a plurality of limiting structures (12), the limiting structures (12) extending along the circumferential direction of the receiving cavity (11), and the limiting structures (12) including an axial limiting surface (121) and a circumferential limiting surface (122), one axial end of the circumferential limiting surface (122) being connected to the outer periphery of the corresponding axial limiting surface (121), the axial limiting surface (121) being adapted to cooperate with an end face of one axial end of the bearing (200), and the circumferential limiting surface (122) being adapted to cooperate with the outer periphery of the bearing (200). A plurality of the limiting structures (12) are arranged in sequence along the axial direction of the receiving cavity (11). Among any two adjacent limiting structures (12), the outer diameter of the axial limiting surface (121) of the limiting structure (12) farther from the through-opening is less than or equal to the inner diameter of the axial limiting surface (121) of the limiting structure (12) closer to the through-opening.

2. The measurement auxiliary tooling (100) according to claim 1, wherein The limiting structure (12) extends continuously along the circumferential direction of the receiving cavity (11); or A break (13) extending radially through is provided on the peripheral wall of the receiving cavity (11), the break (13) extending axially and communicating with the through-opening.

3. The measurement auxiliary tooling (100) according to claim 2, wherein A connecting portion (14) is provided at the other end of the receiving cavity (11) in the first direction, a plurality of the breaks (13) are provided on the peripheral wall of the receiving cavity (11), and the portion of the peripheral wall of the receiving cavity (11) between two adjacent breaks (13) is connected to the connecting portion (14).

4. The measurement auxiliary tooling (100) according to claim 3, characterized in that, The plurality of breaks (13) are evenly spaced apart along the circumferential direction of the receiving cavity (11).

5. The measurement assistance tooling (100) according to claim 3, wherein, The connecting portion (14) is provided with an avoidance opening (141), the avoidance opening (141) being axially opposite to and communicating with the break (13).

6. The measurement assistance tooling (100) according to claim 1, characterized in that, The radial width of the axial limiting surface (121) is less than or equal to 4 mm.

7. The measurement assistance tooling (100) according to claim 1, characterized in that, Including a counterweight member (20), the counterweight member (20) being connected to the tooling body (10).

8. The measurement auxiliary tooling (100) according to claim 7, wherein, The axis of the receiving cavity (11) passes through the center of gravity of the counterweight member (20).

9. The measurement auxiliary tooling (100) according to claim 7, characterized in that, The counterweight member (20) is detachably connected to the tooling body (10), there are a plurality of the counterweight members (20), and the plurality of counterweight members (20) are alternatively connected to the tooling body (10), and different counterweight members (20) have different weights.

10. The measurement assistance tooling (100) according to claim 9, characterized in that, One end of the tooling body (10) away from the through-opening in the first direction is provided with a protrusion (15), the protrusion (15) is provided with an external thread, the counterweight member (20) is provided with a groove (21), the groove (21) is provided with an internal thread, and the counterweight member (20) is detachably connected to the tooling body (10) through the internal thread and the external thread.

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