A bearing groove size measuring fixture and measuring tool

Abstract

The present invention belongs to the field of bearing measurement, and in particular relates to a bearing groove size measuring tool and a measuring tool. The bearing groove size measuring tool comprises a guide sleeve and a measuring mechanism mounted on the guide sleeve, the guide sleeve being used to be fixedly connected to one of the jaws of a vernier caliper, a measuring cylinder being provided at one end of the measuring mechanism, the measuring cylinder being a C-shaped structure that can be detached along its axial direction, the outside of the measuring cylinder being marked with a scale, the inner hole of the measuring cylinder being used to place a steel ball and being a tapered hole that gradually shrinks away from the guide sleeve, a tightening body for pushing the steel ball being slidably mounted on the measuring cylinder along its axial direction, one end of the tightening body being inserted from the opening of the C-shaped structure and being provided with a reading structure that matches the reading of the measuring cylinder scale. This avoids the problem of low measurement efficiency caused by multiple trial clamping due to inappropriate steel ball size during direct ball clamping measurement, as well as the lack of limit fixation of the steel ball and the difficulty in clamping and controlling it so that it falls, thereby facilitating the measurement of bearings of different specifications and improving measurement flexibility.

Description

Technical Field

[0001] The invention belongs to the field of bearing measurement, and in particular relates to a bearing groove size measuring fixture and a measuring tool. Background Art

[0002] Bearings are often used in mechanical transmission shafts. During the bearing processing, in order to know the dimensional machining allowance of the bearing parts currently being processed, such as the groove machining allowance of deep groove ball bearings, it is necessary to measure the groove wall thickness of the deep groove ball bearings. When using a vernier caliper directly for measurement, the measuring jaws of the vernier caliper cannot adapt well to the groove, resulting in large measurement errors.

[0003] Therefore, in order to obtain the machining allowance of the bearing groove in the prior art, Figure 1 As shown, when using a vernier caliper to measure, a steel ball with a known diameter that matches the groove is usually placed in the bearing groove, and the ball wall thickness of the bearing groove is measured. The measured value is then subtracted from the known steel ball diameter and the remaining machining allowance in the measuring direction to obtain the machining allowance of the groove wall thickness.

[0004] However, in actual ball clamping measurement work, especially when there are a large number of parts to be measured, multiple trial clamping is often required due to the incompatibility of the steel ball size or the steel ball is difficult to clamp and control and is easy to fall, which greatly affects the measurement efficiency during ball clamping measurement. Summary of the Invention

[0005] The purpose of the present invention is to provide a bearing groove size measuring tool to solve the technical problems in the prior art of low measurement efficiency caused by multiple trial clamping due to the mismatch of steel ball size or the difficulty in clamping and controlling the steel ball and its easy falling.

[0006] The object of the present invention is to provide a measuring tool to solve the same problem.

[0007] To achieve the above-mentioned purpose, the technical solution of the bearing groove dimension measuring tool provided by the present invention is:

[0008] A bearing groove size measuring tool comprises a guide sleeve and a measuring mechanism mounted on the guide sleeve, the guide sleeve being used to be fixedly connected to one of the jaws of a vernier caliper, a measuring cylinder being provided at one end of the measuring mechanism, the measuring cylinder being a C-shaped structure that is detachable along its axial direction, the outside of the measuring cylinder being marked with a scale, the inner hole of the measuring cylinder being used to place a steel ball and being a tapered hole that gradually shrinks away from the guide sleeve, a tightening body for pushing the steel ball being slidably mounted on the measuring cylinder along its axial direction, one end of the tightening body being inserted from an opening of the C-shaped structure and being provided with a reading structure that cooperates with the scale of the measuring cylinder for reading.

[0009] The beneficial effect is as follows: the present invention is based on a brand-new inventive concept, and its innovation lies in that the measurement is performed by using a bearing groove size measuring tool that cooperates with a vernier caliper, rather than directly clamping the ball for measurement, thereby avoiding the problem of low measurement efficiency caused by multiple trial clamping due to the mismatch of the steel ball size and the lack of limit fixation of the steel ball, which is difficult to clamp and control and thus fall. The measuring mechanism of the bearing groove size measuring tool is parallel to the main scale of the vernier caliper through the guide sleeve installed on the vernier caliper claw, and the measuring cylinder of the measuring mechanism is marked with a scale on the outside, so that a steel ball of a suitable size can be placed in the inner hole of the measuring cylinder and tightened in the bearing groove to be measured with a tightening body that can cooperate with the reading to take the reading. Finally, by subtracting the reading of the vernier caliper from the reading of the measuring mechanism and then subtracting the steel ball diameter and the processing allowance, the size from the bottom of the bearing groove to the inner diameter of the bearing can be obtained, making the measurement of the bearing groove wall thickness simple and efficient. The steel ball is placed in the inner hole of the measuring cylinder to prevent it from falling. At the same time, the clamping body tightens it against the bearing raceway to further improve the stability of the steel ball clamping and ensure reliable contact between the steel ball and the bearing raceway, preventing the steel ball from rolling or misalignment, further improving the efficiency of bearing raceway measurement. The measuring cylinder is detachable along its axial direction, which also facilitates the measurement of bearings of different specifications and improves measurement flexibility.

[0010] As a further improvement, a locking structure is provided between the pressing body and the measuring cylinder.

[0011] The beneficial effect is that a locking structure is provided between the jacking body and the measuring cylinder, so that the top plate can be locked and fixed after being pushed into place, thereby improving measurement efficiency and simplifying measurement operation.

[0012] As a further improvement, the tightening body is a top plate, and one side of the top plate used to push the steel ball is an arc-shaped edge, the vertex of the arc-shaped edge is located on the center line of the inner hole of the measuring cylinder, and the reading structure of the top plate is a straight edge perpendicular to the axis of the measuring cylinder.

[0013] The beneficial effects are as follows: the tightening body is set as a simple top plate, and the side of the top plate that pushes the steel ball is set as an arc edge, and the vertex of the arc edge is located on the center line of the inner hole of the measuring cylinder. This ensures stable contact between the steel ball and the edge of the top plate, saves space occupied by the top plate, avoids the ineffective area of ​​the top plate, and simplifies its structure. At the same time, by setting the reading structure that matches the scale of the measuring cylinder as a straight edge, the convenience and accuracy of the measurement reading are effectively guaranteed. The contact position between the top plate and the steel ball is fixed, which facilitates conversion.

[0014] As a further improvement, the number of steel balls corresponds to the number of segments of the measuring cylinder, and the diameter of the steel balls is larger than the outlet diameter of the inner hole of the corresponding segment measuring cylinder of the measuring hole.

[0015] The beneficial effects are: making the number of steel balls correspond to the number of measuring tube segments, facilitating the flexible replacement of steel balls of corresponding specifications, making the inner hole outlet diameter smaller than the steel ball diameter, and further limiting the steel balls circumferentially to prevent them from falling from the port during measurement.

[0016] As a further improvement, one end of the measuring cylinder corresponding to the outlet of the inner hole is a convex surface, and the outlet of the inner hole is located at the center of the convex surface.

[0017] The beneficial effects are: setting the end of the measuring tube into a convex surface facilitates avoiding the bearing groove during measurement, simplifying the structure and making it more compact. Setting the port in the center of the convex surface improves measurement accuracy, improves centering effect, and improves measurement efficiency.

[0018] As a further improvement, the guide sleeve is used to be fixedly connected to the fixed jaw of the vernier caliper, and a guide matching structure is provided between the measuring mechanism and the guide sleeve. The guide matching structure is used to make the measuring mechanism slide parallel to the scale body of the vernier caliper, and a counterweight is provided at the end of the measuring mechanism facing away from the measuring cylinder.

[0019] The beneficial effects are: setting a guide matching structure to enable the measuring mechanism to slide on the fixed jaw of the vernier caliper parallel to the main scale of the vernier caliper, thereby improving the measurement efficiency, and setting a counterweight at the end of the measuring mechanism away from the measuring tube, thereby further maintaining the balance and stability during parallel sliding, thereby further improving the measurement efficiency.

[0020] As a further improvement, the guide sleeve includes an insertion block, which is used to insert the fixed claw and is provided with an opening, a fastening block is assembled in the opening, and the fastening block is used to be fixedly connected to the fixed claw, and matching blocks for sliding cooperation with the measuring mechanism are installed on both sides of the insertion block.

[0021] The beneficial effect is that such an arrangement facilitates the disassembly and installation of the guide sleeve on the fixed jaw of the vernier caliper, thereby improving the assembly and disassembly flexibility of the bearing groove size measuring tool and facilitating the handling of different measurement objects.

[0022] As a further improvement, the guide matching structure is a guide rail and guide groove structure provided between the matching block and the measuring mechanism.

[0023] The beneficial effect is that the guiding matching structure is set as a guide rail and guide groove structure that matches each other, which has a relatively simple and compact structure and is easy to process, has good stability and smoothness of parallel sliding and is easy to maintain a parallel state, and has a better guiding effect.

[0024] As a further improvement, the guide rail and guide groove structure is provided with at least two guide grooves on the matching block.

[0025] The beneficial effect is that by providing at least two lines on the matching block, the measuring mechanism can be adapted to bearings of different thicknesses and sizes, thereby improving the measurement flexibility and applicability of the bearing groove size measuring tool.

[0026] To achieve the above-mentioned purpose, the technical solution of the measuring tool provided by the present invention is:

[0027] A measuring tool includes a vernier caliper, which is equipped with a bearing groove size measuring tool. The bearing groove size measuring tool includes a guide sleeve and a measuring mechanism installed on the guide sleeve. The guide sleeve is used to be fixedly connected to one of the jaws of the vernier caliper. One end of the measuring mechanism is provided with a measuring cylinder. The measuring cylinder is a C-shaped structure that can be split and detached along its axial direction. The outside of the measuring cylinder is marked with a scale. The inner hole of the measuring cylinder is used to place a steel ball and is a tapered hole that gradually shrinks away from the guide sleeve. A tightening body for pushing the steel ball is installed on the measuring cylinder in a sliding manner along its axial direction. One end of the tightening body is inserted from the opening of the C-shaped structure and is provided with a reading structure that cooperates with the scale of the measuring cylinder to read the reading.

[0028] The beneficial effect is as follows: the present invention is based on a brand-new inventive concept, and its innovation lies in that the measurement is performed by using a bearing groove size measuring tool that cooperates with a vernier caliper, rather than directly clamping the ball for measurement, thereby avoiding the problem of low measurement efficiency caused by multiple trial clamping due to the mismatch of the steel ball size and the lack of limit fixation of the steel ball, which is difficult to clamp and control and thus fall. The measuring mechanism of the bearing groove size measuring tool is parallel to the main scale of the vernier caliper through the guide sleeve installed on the vernier caliper claw, and the measuring cylinder of the measuring mechanism is marked with a scale on the outside, so that a steel ball of a suitable size can be placed in the inner hole of the measuring cylinder and tightened in the bearing groove to be measured with a tightening body that can cooperate with the reading to take the reading. Finally, by subtracting the reading of the vernier caliper from the reading of the measuring mechanism and then subtracting the steel ball diameter and the processing allowance, the size from the bottom of the bearing groove to the inner diameter of the bearing can be obtained, making the measurement of the bearing groove wall thickness simple and efficient. The steel ball is placed in the inner hole of the measuring cylinder to prevent it from falling. At the same time, the clamping body tightens it against the bearing raceway to further improve the stability of the steel ball clamping and ensure reliable contact between the steel ball and the bearing raceway, preventing the steel ball from rolling or misalignment, further improving the efficiency of bearing raceway measurement. The measuring cylinder is detachable along its axial direction, which also facilitates the measurement of bearings of different specifications and improves measurement flexibility.

[0029] As a further improvement, a locking structure is provided between the pressing body and the measuring cylinder.

[0030] The beneficial effect is that a locking structure is provided between the jacking body and the measuring cylinder, so that the top plate can be locked and fixed after being pushed into place, thereby improving measurement efficiency and simplifying measurement operation.

[0031] As a further improvement, the tightening body is a top plate, and one side of the top plate used to push the steel ball is an arc-shaped edge, the vertex of the arc-shaped edge is located on the center line of the inner hole of the measuring cylinder, and the reading structure of the top plate is a straight edge perpendicular to the axis of the measuring cylinder.

[0032] The beneficial effects are as follows: the tightening body is set as a simple top plate, and the side of the top plate that pushes the steel ball is set as an arc edge, and the vertex of the arc edge is located on the center line of the inner hole of the measuring cylinder. This ensures stable contact between the steel ball and the edge of the top plate, saves space occupied by the top plate, avoids the ineffective area of ​​the top plate, and simplifies its structure. At the same time, by setting the reading structure that matches the scale of the measuring cylinder as a straight edge, the convenience and accuracy of the measurement reading are effectively guaranteed. The contact position between the top plate and the steel ball is fixed, which facilitates conversion.

[0033] As a further improvement, the number of steel balls corresponds to the number of segments of the measuring cylinder, and the diameter of the steel balls is larger than the outlet diameter of the inner hole of the corresponding segment measuring cylinder of the measuring hole.

[0034] The beneficial effects are: making the number of steel balls correspond to the number of measuring tube segments, facilitating the flexible replacement of steel balls of corresponding specifications, making the inner hole outlet diameter smaller than the steel ball diameter, and further limiting the steel balls circumferentially to prevent them from falling from the port during measurement.

[0035] As a further improvement, one end of the measuring cylinder corresponding to the outlet of the inner hole is a convex surface, and the outlet of the inner hole is located at the center of the convex surface.

[0036] The beneficial effects are: setting the end of the measuring tube into a convex surface facilitates avoiding the bearing groove during measurement, simplifying the structure and making it more compact. Setting the port in the center of the convex surface improves measurement accuracy, improves centering effect, and improves measurement efficiency.

[0037] As a further improvement, the guide sleeve is used to be fixedly connected to the fixed jaw of the vernier caliper, and a guide matching structure is provided between the measuring mechanism and the guide sleeve. The guide matching structure is used to make the measuring mechanism slide parallel to the scale body of the vernier caliper, and a counterweight is provided at the end of the measuring mechanism facing away from the measuring cylinder.

[0038] The beneficial effects are: setting a guide matching structure to enable the measuring mechanism to slide on the fixed jaw of the vernier caliper parallel to the main scale of the vernier caliper, thereby improving the measurement efficiency, and setting a counterweight at the end of the measuring mechanism away from the measuring tube, thereby further maintaining the balance and stability during parallel sliding, thereby further improving the measurement efficiency.

[0039] As a further improvement, the guide sleeve includes an insertion block, which is used to insert the fixed claw and is provided with an opening, a fastening block is assembled in the opening, and the fastening block is used to be fixedly connected to the fixed claw, and matching blocks for sliding cooperation with the measuring mechanism are installed on both sides of the insertion block.

[0040] The beneficial effect is that such an arrangement facilitates the disassembly and installation of the guide sleeve on the fixed jaw of the vernier caliper, thereby improving the assembly and disassembly flexibility of the bearing groove size measuring tool and facilitating the handling of different measurement objects.

[0041] As a further improvement, the guide matching structure is a guide rail and guide groove structure provided between the matching block and the measuring mechanism.

[0042] The beneficial effect is that the guiding matching structure is set as a guide rail and guide groove structure that matches each other, which has a relatively simple and compact structure and is easy to process, has good stability and smoothness of parallel sliding and is easy to maintain a parallel state, and has a better guiding effect.

[0043] As a further improvement, the guide rail and guide groove structure is provided with at least two guide grooves on the matching block.

[0044] The beneficial effect is that by providing at least two lines on the matching block, the measuring mechanism can be adapted to bearings of different thicknesses and sizes, thereby improving the measurement flexibility and applicability of the bearing groove size measuring tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Schematic diagram of a method for measuring bearing groove dimensions in the prior art;

[0046] Figure 2 This is a schematic structural diagram of a measuring tool embodiment 1 of the present invention;

[0047] Figure 3 for Figure 1 A schematic structural diagram of the insert block of the bearing raceway dimension measuring tool shown;

[0048] Figure 4 for Figure 1 A schematic structural diagram of the fastening block of the bearing raceway dimension measuring tool shown;

[0049] Figure 5 for Figure 1 A schematic diagram of the structure of the matching block of the bearing raceway size measuring tool shown;

[0050] Figure 6 for Figure 1 A schematic diagram of the structure of the measuring mechanism of the bearing groove size measuring tool shown;

[0051] Figure 7 for Figure 1 A schematic structural diagram of the top plate of the bearing groove size measuring tool shown;

[0052] Figure 8 for Figure 1 Schematic diagram of the combined structure of the measuring cylinder of the bearing groove size measuring tool shown;

[0053] Figure 9 for Figure 1 The diagram shows the overall structure of the measuring cylinder of the bearing raceway dimension measuring tool when used for measurement;

[0054] Description of reference numerals:

[0055] 1. Vernier caliper; 2. Guide sleeve; 21. Insert block; 22. Fastening block; 23. Mating block; 3. Measuring mechanism; 31. Measuring tube; 311. Top plate; 312. Steel ball; 313. End of measuring tube; 32. Mating part; 33. Counterweight; 4. Bearing to be measured. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0057] The present invention is described in further detail below with reference to the examples.

[0058] Specific embodiment 1 of the measuring tool provided by the present invention:

[0059] The bearing groove size measuring tool provided in this embodiment innovatively measures the wall thickness of the bearing groove by using a bearing groove size measuring tool that cooperates with a vernier caliper 1, replacing direct ball clamping measurement, thereby avoiding the problem of low measurement efficiency caused by multiple trial clamping due to the mismatch of the steel ball 312 size during direct ball clamping measurement, and the lack of limit fixation of the steel ball 312, making it difficult to clamp and control it to prevent it from falling.

[0060] In this embodiment, if Figure 2As shown, the bearing raceway dimension measurement tool includes a guide sleeve 2 and a measuring mechanism 3. The guide sleeve 2 is mounted on the fixed jaw of the vernier caliper 1, and the measuring mechanism 3 is parallel to the main scale of the vernier caliper 1 and movably cooperates with the guide sleeve 2. The measuring mechanism 3 is provided with a C-shaped measuring cylinder 31 with a scale on the outside at the end facing the movable jaw. A steel ball 312 is placed in the inner hole of the measuring cylinder 31 to prevent the steel ball 312 from falling. A top plate 311 is provided in the inner hole for pushing the steel ball 312 to contact the bearing raceway to be measured and coordinate the reading. One end of the top plate 311 is inserted through the C-shaped opening, further improving the stability of the steel ball 312 clamping and ensuring reliable contact between the steel ball 312 and the bearing raceway, preventing the steel ball 312 from rolling or misaligning, and further improving the efficiency of bearing raceway measurement. Since the measuring part of the measuring mechanism 3 is marked with scales, and the top plate 311 can be matched with the scale of the measuring tube 31 for reading, a steel ball 312 of appropriate size can be placed in the inner hole and pressed tightly against the bearing groove to be measured with the top plate 311 that can be matched with the reading to take readings. Finally, by subtracting the reading of the vernier caliper 1 from the reading of the measuring mechanism 3 and then subtracting the diameter of the steel ball 312 and the machining allowance, the size from the bottom of the bearing groove to the inner diameter of the bearing can be obtained, making the measurement of the bearing groove wall thickness simple and efficient.

[0061] In this embodiment, if Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the guide sleeve 2 of the bearing raceway measuring tool is a combined structure consisting of an insert block 21, a fastening block 22, and a matching block 23, which makes it easy to disassemble and install it on the fixed jaw of the vernier caliper 1, thereby improving the loading and unloading flexibility of the bearing raceway size measuring tool so that it can be used for different measurement objects. When it is necessary to measure the bearing raceway size, it can be installed on the vernier caliper 1 for measurement, and the vernier caliper 1 can still be used for other measurement work at other times.

[0062] The insertion block 21 has a slot for the fixed claw to be inserted. A through-hole is also provided in the middle of the fixed claw after insertion, allowing the fastening block 22 to be inserted perpendicular to the slot and securely fasten the fixed claw to the insertion block 21. The fastening block 22 has outer dimensions that match the through-hole and inner dimensions that match the fixed claw. Threaded holes in the fastening block allow for bolt connection, securing the fixed claw from both sides. The overall structure is simple and compact, making assembly and disassembly easy.

[0063] Mating blocks 23 are threadedly connected to both sides of the mounting block 21. These blocks are provided with multiple equally spaced V-shaped grooves parallel to the main scale of the vernier caliper 1. Ribs that align with the V-shaped grooves are provided on the upper and lower edges of the mating portion in the center of the measuring mechanism 3. These two ridges form a guide rail and guide groove structure. The combination of these two ridges allows the measuring mechanism 3 to slide parallel to the scale of the vernier caliper 1 on the mounting block. The structure is relatively simple and compact, making it easy to manufacture. This ensures stable and smooth parallel sliding, facilitates maintaining a parallel state, and provides a good guiding effect. The mating portion of the measuring mechanism 3 can slide with any two equally spaced grooves on the mating block 23. When the bearing thickness to be measured is too large, the groove closer to the bottom can be selected, while when the thickness is smaller, the groove closer to the top can be selected. This allows the ridges of the mating portion 32 of the measuring mechanism 3 to mate with grooves of different heights, thereby adapting to bearings of varying thicknesses and improving the flexibility and applicability of the bearing groove sizing tool.

[0064] In this embodiment, if Figure 6 As shown, circular holes are provided on both sides of the mating part 32 of the measuring mechanism 3 to facilitate its installation and connection with the mating block 23 from the other side of the fixed claw, thereby preventing the measuring mechanism 3 from falling during the measurement process, and a counterweight 33 is provided on the side of the measuring mechanism 3 away from the fixed claw to further maintain the balance and stability during parallel sliding and improve the measurement efficiency.

[0065] In this embodiment, if Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the measuring cylinder 31 of the measuring mechanism 3 is a C-shaped cylinder composed of a split and detachable structure. The segments of the measuring cylinder 31 are connected by threads. The number of steel balls 312 corresponds to the number of segments of the measuring cylinder 31, so that its maximum measurement limit can be specifically adjusted, which facilitates the bearing groove size measurement tool to adapt to bearings of different diameter specifications and improves the applicability of the bearing groove size measurement tool. The C-shaped opening provides avoidance for the sliding of the top plate 311, facilitating the sliding of the top plate 311.

[0066] At the same time, the inner hole is tapered, with the diameter gradually decreasing toward the movable jaw, to accommodate steel balls 312 of different sizes. The inner hole outlet of each segment of the measuring tube end 313 corresponds to steel balls 312 of different diameters, allowing steel balls 312 of that size to be exposed and contact the measured channel. In addition, the measuring tube end 313 is convex, with the outlet located at the center of the convex surface and the outlet diameter smaller than the diameter of the steel ball 312. This allows the use of steel balls 312 of different sizes to measure bearings with different channel widths or depths, further improving the flexibility and applicability of the bearing channel size measurement tool and further enhancing measurement accuracy. If the opening diameter is smaller than the steel ball 312, the movement of the steel ball 312 within the inner hole is limited, preventing the steel ball 312 from being excessively pushed out of the inner hole, thereby improving measurement efficiency. Therefore, when the diameter of the steel ball 312 is small, the measuring tube 31 can be extended by increasing the number of measuring units while the outlet is reduced. Continuous adjustment can ensure that even small-diameter steel balls 312 are reliably fixed to the outlet, allowing for smooth measurement.

[0067] In this embodiment, the inner hole top plate 311 of the measuring cylinder 31 is provided with a locking structure composed of a top screw or a retaining spring between the measuring cylinder 31, which is used to reliably fix the steel ball 312 in the groove of the bearing 4 to be measured during measurement. Its structure is simple and compact, which is convenient for tightening the steel ball 312 during measurement operation, and has low production cost. One side of the top plate 311 that pushes the steel ball 312 is a circular arc edge with the vertex of the circular arc edge located on the center line of the inner hole, while the other side is a straight edge. The straight edge is used to cooperate with the scale of the measuring cylinder 31, realizing the use of the top plate 311 reading during measurement. The circular arc edge not only ensures that the steel ball 312 is tangent to the edge of the top plate 311 for stable contact, but also saves space on the top plate 311, avoids the ineffective area of ​​the top plate 311, and simplifies its structure. The straight edge effectively ensures the convenience and accuracy of the measurement reading. The contact position between the top plate and the steel ball is fixed, which is convenient for conversion.

[0068] like Figure 2 、 Figure 9 As shown, when using this bearing groove dimension measuring tool for measurement, first adjust the measuring mechanism 3 to the appropriate height of the guide sleeve 2 according to the width of the bearing 4 to be measured. Then, select a steel ball 312 of appropriate size based on the groove dimension of the bearing 4 to be measured and place it into the inner hole of the measuring mechanism 3 so that it can protrude from the end of the measuring cylinder 31 under the pressure of the top plate 311. Then, place the bearing 4 to be measured in the fixed jaws of the vernier caliper 1, and ensure that the steel ball 312 is in stable and reliable contact with the groove of the bearing 4 to be measured. Therefore, the width dimension of the top plate 311 and the diameter of the steel ball 312 are known. Then, the reading of the vernier caliper 1 and the reading of the measuring cylinder 31 based on the straight edge of the top plate 311 are read. The width dimension of the top plate 311, the diameter of the steel ball 312, the reading of the measuring cylinder 31 based on the straight edge of the top plate 311, and the machining allowance of the groove of the bearing 4 to be measured are subtracted from the reading of the vernier caliper 1. The groove wall thickness dimension of the bearing 4 to be measured can be determined.

[0069] Specific embodiment 2 of the bearing groove size measuring tool provided by the present invention:

[0070] In the embodiment 1 of the bearing groove dimension measuring tool of the present invention, the top plate 311 is provided with a locking structure, which is a top screw or a retaining spring. In this embodiment, the locking structure can also be replaced with a sliding damping structure similar to that on the vernier of the vernier caliper 1.

[0071] Specific embodiment 3 of the bearing groove size measuring tool provided by the present invention:

[0072] In Example 1 of the bearing raceway dimension measuring tool of the present invention, one side of the top plate 311 used to push the steel ball 312 has an arc-shaped edge, the vertex of which is located on the centerline of the inner hole of the measuring cylinder. The reading structure of the top plate 311 is a straight edge perpendicular to the axis of the measuring cylinder 31. In this embodiment, the top plate 311 can also have both sides with arc-shaped edges, both with straight edges, or other structures that can stably push the steel ball 312 and facilitate reading.

[0073] Specific embodiment 4 of the bearing groove size measuring tool provided by the present invention:

[0074] In Example 1 of the bearing groove dimension measuring tool of the present invention, the diameter of steel ball 31 is larger than the diameter of the inner hole outlet of measuring cylinder 31. In this embodiment, the outlet diameter can also be equal to the diameter of steel ball 312, which can also prevent steel ball 312 from falling out of directions other than one side of the bearing. During measurement, the bearing presses against steel ball 312 to prevent it from falling out. After measurement, steel ball 312 can be directly removed from the outlet.

[0075] Specific embodiment 5 of the bearing groove size measuring tool provided by the present invention:

[0076] In the first embodiment of the bearing raceway dimension measuring tool of the present invention, the inner hole is a smooth tapered hole. In this embodiment, the inner hole can also be a stepped hole.

[0077] Specific embodiment 6 of the bearing groove size measuring tool provided by the present invention:

[0078] In Example 1 of the bearing raceway dimension measuring tool of the present invention, the guide sleeve 2 is fixedly connected to the fixed jaw of the vernier caliper 1. A guide structure is provided between the measuring mechanism 3 and the guide sleeve 2, which is used to slide the measuring mechanism 3 parallel to the body of the vernier caliper 1. A counterweight 33 is provided on the end of the measuring mechanism 3 facing away from the measuring cylinder 31. In this embodiment, the measuring mechanism 3 can also be fixedly connected to the guide sleeve 2, and the guide sleeve 2 can be installed and connected to the movable jaw. The measurement is adjusted only from the movable jaw of the vernier caliper 1 to avoid measurement errors caused by the movement between the measuring mechanism 3 and the guide sleeve 2. The counterweight 33 can also be omitted.

[0079] Specific embodiment 7 of the bearing groove size measuring tool provided by the present invention:

[0080] In Example 1 of the bearing raceway dimension measuring tool of the present invention, the guide sleeve 2 includes an insertion block 21. The insertion block 21 is used to insert the fixed jaw and has an opening. A fastening block 22 is mounted within the opening and fixedly connected to the fixed jaw. Fitting blocks 23 are mounted on either side of the insertion block 21 for sliding engagement with the measuring mechanism 3. In this embodiment, the insertion block 21 and the fitting blocks 23 can also be configured as a fixed structure. After the fitting blocks 21 are mounted to the jaws, bolts can be used to tighten the fitting blocks 21 from the side of the insertion block 21 that does not have the fitting blocks 23, thereby eliminating the fastening blocks 22.

[0081] Specific embodiment 8 of the bearing groove size measuring tool provided by the present invention:

[0082] In the first embodiment of the bearing groove dimension measuring tool of the present invention, the guide matching structure is a guide rail and guide groove structure provided between the matching block 23 and the measuring mechanism 3. In this embodiment, the guide rail and guide groove structure can also be a structure in which a round rod and a bar-shaped through hole match and slide.

[0083] Specific embodiment 9 of the bearing groove size measuring tool provided by the present invention:

[0084] In Example 1 of the bearing groove dimension measuring tool of the present invention, the guide rail and guide groove structure is provided with multiple guide grooves on the mating block 23. In this embodiment, when the width specifications of the bearings 4 to be measured do not vary much, only two grooves can be provided, that is, one measurement height, and this can be used to measure bearings of similar width within the same width range.

[0085] Specific embodiments of the bearing groove size measuring tool provided by the present invention:

[0086] The bearing groove dimension measuring tool of the present invention is the bearing groove dimension measuring tool used in any one of the specific embodiments 1-9 of the above-mentioned bearing groove dimension measuring tool, and will not be described in detail here.

[0087] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bearing raceway dimension measuring tool, characterized in that: The caliper is a C-shaped structure that can be detached along its axial direction. The outer surface of the caliper is marked with a scale. The inner hole of the caliper is used to place a steel ball and is a tapered hole that gradually shrinks away from the guide sleeve. A tightening body for pushing the steel ball is installed on the caliper along its axial direction. One end of the tightening body is inserted from the opening of the C-shaped structure and is provided with a reading structure for reading the reading in coordination with the scale of the caliper. The tightening body is a top plate. One side of the top plate for pushing the steel ball is an arc-shaped edge. The vertex of the arc-shaped edge is located on the center line of the inner hole of the caliper. The reading structure of the top plate is a straight edge perpendicular to the axis of the caliper. The number of steel balls corresponds to the number of segments of the caliper. The diameter of the steel ball is larger than the inner hole outlet diameter of the corresponding segment of the measuring hole. The end of the caliper corresponding to the inner hole outlet is a convex surface, and the outlet of the inner hole is located at the center of the convex surface.

2. The bearing raceway dimension measuring tool according to claim 1, characterized in that: A locking structure is provided between the pressing body and the measuring cylinder.

3. The bearing raceway dimension measuring tool according to claim 1 or 2, characterized in that: The guide sleeve is used to be fixedly connected to the fixed jaw of the vernier caliper. A guide matching structure is provided between the measuring mechanism and the guide sleeve. The guide matching structure is used to make the measuring mechanism slide parallel to the scale body of the vernier caliper. A counterweight is provided at the end of the measuring mechanism facing away from the measuring cylinder.

4. The bearing groove dimension measuring tool according to claim 3 is characterized in that: The guide sleeve includes an insertion block, which is used to insert the fixed claw and is provided with an opening. A fastening block is assembled in the opening, and the fastening block is used to be fixedly connected to the fixed claw. Matching blocks for sliding cooperation with the measuring mechanism are installed on both sides of the insertion block.

5. The bearing raceway dimension measuring tool according to claim 4 is characterized in that: The guide matching structure is a guide rail and guide groove structure provided between the matching block and the measuring mechanism.

6. The bearing raceway dimension measuring tool according to claim 5, characterized in that: The guide rail and guide groove structure is provided with at least two guide grooves on the matching block.

7. A measuring tool, characterized in that: It comprises a vernier caliper, on which a bearing groove size measuring tool is installed. The bearing groove size measuring tool is the bearing groove size measuring tool described in any one of claims 1 to 6.

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