A device for detecting the value of the internal spline M of a reducer gear

Abstract

The utility model relates to a kind of detection devices of reduction gear gear inner spline M value, belong to gear detection equipment field. Including: support mechanism, fixed detection mechanism, displacement detection mechanism, workbench, displacement driving mechanism and data reading mechanism, the fixed detection mechanism is fixedly installed at the top of the support mechanism, the displacement detection mechanism is slidably installed at the top of the support mechanism, the workbench is fixedly installed at the top of the support mechanism, and it is between the fixed detection mechanism and the displacement detection mechanism, the displacement driving mechanism is installed in the support mechanism, and with the displacement detection mechanism transmission connection, for driving the displacement of the displacement detection mechanism, the data reading mechanism is installed on the displacement detection mechanism. The utility model is favorable to the M value detection of shaft tooth and disc tooth.

Description

Technical Field

[0001] This utility model relates to the field of gear testing equipment, and in particular to a device for testing the M value of the internal spline of a reducer gear. Background Technology

[0002] Currently, the shafts and gears in the reducers of new energy vehicles mostly adopt internal spline structures. This structure has high requirements for the tooth groove width of the spline. The tooth groove width is an important parameter in internal splines, which determines the tooth flank clearance when the internal splines are mated. If the tooth groove width of the internal spline is too large, the tooth flank clearance will increase during spline assembly, which will cause abnormal noise during the operation of the gearbox. If the tooth groove width of the internal spline is too small, the assembly process will not be possible. Since the accuracy of the tooth groove width of the internal spline directly affects the smoothness of the transmission and the accuracy of the assembly, it is necessary to focus on controlling it during the internal spline machining process.

[0003] In existing technologies, the M-value is often used to indirectly reflect the actual tooth space width and tooth profile accuracy of internal splines. The M-value is the distance between the two furthest tooth spaces on the circumference of the internal spline. In production, gear measuring instruments or internal spline comprehensive gauges are commonly used to detect the M-value of shaft and internal splines. Gear measuring instruments have a long testing time (average 3-5 minutes / piece), and although internal spline comprehensive gauges can control the M-value during the internal spline testing process, they cannot detect specific M-value values, and the measurement is limited to a single measurement scenario, making it impossible to simultaneously measure shaft and disc teeth. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a device for detecting the M value of the internal spline of a reducer gear, so as to solve the above-mentioned problem.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A detection device for the M value of the internal spline of a reducer gear, comprising: a support mechanism, a fixed detection mechanism, a displacement detection mechanism, a worktable, a displacement driving mechanism, and a data reading mechanism. The fixed detection mechanism is fixedly installed on the top of the support mechanism, the displacement detection mechanism is slidably installed on the top of the support mechanism, the worktable is fixedly installed on the top of the support mechanism and disposed between the fixed detection mechanism and the displacement detection mechanism, the displacement driving mechanism is installed inside the support mechanism and is connected to the displacement detection mechanism for driving the displacement detection mechanism to move, and the data reading mechanism is installed on the displacement detection mechanism.

[0006] The beneficial effects of this utility model are: the displacement driving mechanism is conducive to driving the displacement detection mechanism to move at the top of the support mechanism, thereby cooperating with the fixed detection mechanism to adapt to shaft teeth or disc teeth of different sizes; the data reading mechanism, in conjunction with standard parts, is conducive to realizing the numerical measurement of the M value of the spline inside the shaft teeth or disc teeth.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the displacement detection mechanism includes: a displacement measuring seat, a second probe bracket, a second inner probe, and a return spring. The displacement measuring seat is slidably mounted on the top of the support mechanism. The second probe bracket is an L-shaped rod, with its horizontal section fixedly mounted on the top of the displacement measuring seat. The second inner probe is fixedly mounted on the side wall of the vertical section of the second probe bracket. The side wall of the displacement measuring seat is provided with a fixing groove inward. One end of the return spring is fixedly connected to the bottom inner wall of the fixing groove, and the other end is fixedly connected to the lower side wall of the worktable.

[0009] The beneficial effects of adopting the above-mentioned further scheme are: the second probe bracket is an L-shaped rod, which is not only conducive to fixing it on the displacement measuring seat, thereby realizing the displacement of the second inner probe, but also conducive to placing it inside the gear to be measured, so that the second inner probe abuts against the inner wall of the gear to be measured; the return spring is conducive to stretching or compressing when the displacement measuring seat moves, thereby accumulating force for the displacement measuring seat to return to its initial position.

[0010] Furthermore, the fixed detection mechanism includes: a fixed measuring seat, a first probe bracket, and a first inner probe. The bottom end of the fixed measuring seat is fixedly installed on the top end of the support mechanism. The first probe bracket is an L-shaped rod, the horizontal section of which is fixedly installed on the top end of the fixed measuring seat. The first inner probe is fixedly installed on the side wall of the vertical section of the first probe bracket.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the first probe bracket is an L-shaped rod, which is not only conducive to fixing on the fixed measuring seat, but also conducive to placing inside the gear to be measured, so that the first inner probe abuts against the inner wall of the gear to be measured.

[0012] Furthermore, the first internal test head and the second internal test head are configured in reverse order.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that it facilitates contact with the two tooth grooves that are furthest apart on the circumference of the internal spline of the gear, thereby realizing the detection of the M value.

[0014] Furthermore, the workbench is a tubular structure, with its bottom end fixedly installed on the top of the support mechanism, and two adjustment holes are vertically provided on opposite sides of its sidewalls, and the adjustment holes are through holes.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the two adjustment holes are respectively set vertically on the opposite side of the workbench sidewall, which is conducive to the first probe bracket and the second probe bracket passing through the workbench and avoids interference between the workbench and the first probe bracket and the second probe bracket when the workbench is fixedly installed at the top of the support mechanism.

[0016] Furthermore, the horizontal sections of the first probe bracket and the second probe bracket respectively pass through the two adjustment holes, and the vertical sections of the first probe bracket and the second probe bracket are arranged inside the worktable.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that it facilitates the first inner probe and the second inner probe to move in opposite directions inside the internal spline of the gear, thereby abutting against the two tooth grooves that are furthest apart on the circumference of the internal spline of the gear.

[0018] Furthermore, the displacement driving mechanism includes a rotating handle and a transmission rod. One end of the rotating handle and one end of the transmission rod are respectively fixedly connected to the two ends of a first rotating shaft. The first rotating shaft is rotatably connected to the side wall of the support mechanism. The rotating handle is disposed outside the support mechanism, and the transmission rod is disposed inside the support mechanism. The other end of the transmission rod is hinged to the lower side wall of the displacement measuring seat through a second rotating shaft.

[0019] The beneficial effect of adopting the above-mentioned further solution is that rotating the handle facilitates the drive rod to move in an arc around the first rotating shaft, thereby driving the displacement measuring seat to move along the slide groove through the second rotating shaft, and thus realizing the displacement adjustment of the second inner probe inside the gear.

[0020] Furthermore, the data reading mechanism includes: a dial indicator, a fixed base, and a connecting bracket. The fixed base is fixedly installed on the top of the support mechanism, the connecting bracket is fixedly installed on the side wall of the displacement measuring base, and the dial indicator is fixedly installed on the connecting bracket, with its measuring rod abutting against the fixed base.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the connecting bracket is conducive to driving the dial indicator to move synchronously with the displacement measuring seat, so that when the first inner probe and the second inner probe abut against the two tooth grooves that are furthest apart on the inner spline circumference, the M value can be measured by reading the value on the dial indicator.

[0022] Furthermore, the support mechanism includes: a top plate, a support platform, adjusting screws, and support feet. The top plate is fixedly installed on the top of the support platform. The bottom end of the support platform is provided with a plurality of threaded holes spaced apart circumferentially. The plurality of adjusting screws are respectively threadedly connected to the plurality of threaded holes. The plurality of support feet are respectively fixedly installed on the bottom ends of the plurality of adjusting screws. The support feet are located below the support platform. The worktable is fixedly installed on the top of the top plate.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the adjusting screw is connected to the threaded hole, which facilitates the lifting and lowering of the top plate and the support platform, thereby adapting to different working heights.

[0024] Furthermore, the top of the top plate is provided with a sliding groove, the longitudinal section of which is an inverted T-shape. The fixed detection mechanism is fixedly installed on the sliding groove, and the displacement detection mechanism is slidably installed on the sliding groove.

[0025] The beneficial effects of adopting the above-mentioned further scheme are that the chute is not only conducive to guiding the sliding of the displacement detection mechanism, but also conducive to keeping the fixed detection mechanism and the displacement detection mechanism on the same straight line. Attached Figure Description

[0026] Figure 1 This is a front view of the overall structure provided in Embodiment 1 of the present utility model; Figure 2 This is a top view of the overall structure provided in Embodiment 1 of this utility model; Figure 3 A schematic diagram of the displacement driving mechanism provided in Embodiment 1 of this utility model; Figure 4 This is a front view of the overall structure provided for Embodiment 2 of this utility model.

[0027] The attached diagram lists the components represented by each number as follows: 1. Support mechanism; 2. Fixed detection mechanism; 3. Displacement detection mechanism; 4. Worktable; 5. Displacement drive mechanism; 6. Data reading mechanism; 11. Top plate; 12. Support platform; 13. Adjusting screw; 14. Support foot; 21. Fixed measuring seat; 22. First probe bracket; 23. First inner probe; 31. Displacement measuring seat; 32. Second probe bracket; 33. Second inner probe; 34. Return spring; 41. Adjustment hole; 51. Rotating handle; 52. Transmission rod; 53. First rotating shaft; 54. Second rotating shaft; 61. Dial indicator; 62. Fixed seat; 63. Connecting bracket; 111. Slide groove; 311. Fixed groove. Detailed Implementation

[0028] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] Example 1: This example is for detecting the M value of the internal spline of the shaft tooth.

[0030] like Figures 1 to 3As shown, this embodiment provides a device for detecting the M value of the internal spline of a reducer gear, including: a support mechanism 1, a fixed detection mechanism 2, a displacement detection mechanism 3, a worktable 4, a displacement driving mechanism 5, and a data reading mechanism 6. The fixed detection mechanism 2 is fixedly installed on the top of the support mechanism 1, the displacement detection mechanism 3 is slidably installed on the top of the support mechanism 1, the worktable 4 is fixedly installed on the top of the support mechanism 1 and disposed between the fixed detection mechanism 2 and the displacement detection mechanism 3, the displacement driving mechanism 5 is installed inside the support mechanism 1 and is connected to the displacement detection mechanism 3 for driving the displacement detection mechanism 3 to move, and the data reading mechanism 6 is installed on the displacement detection mechanism 3.

[0031] It should be noted that in this embodiment, since the outer diameter of the shaft tooth is smaller than the inner diameter of the worktable 4, the lower part of the shaft tooth is located inside the worktable 4, and the stop block on the side wall of the shaft tooth abuts against the top of the worktable 4, thereby stably placing the shaft tooth on the worktable 4, which facilitates the subsequent detection of the internal spline M value of the shaft tooth by the fixing detection mechanism 2 and the displacement detection mechanism 3.

[0032] The beneficial effects of this utility model are: the displacement driving mechanism is conducive to driving the displacement detection mechanism to move at the top of the support mechanism, thereby cooperating with the fixed detection mechanism to adapt to shaft teeth or disc teeth of different sizes; the data reading mechanism, in conjunction with standard parts, is conducive to realizing the numerical measurement of the M value of the spline inside the shaft teeth or disc teeth.

[0033] Preferred, such as Figure 1 As shown, the displacement detection mechanism 3 includes: a displacement measuring seat 31, a second probe bracket 32, a second inner probe 33, and a return spring 34. The displacement measuring seat 31 is slidably mounted on the top of the support mechanism 1. The second probe bracket 32 ​​is an L-shaped rod, with its horizontal section fixedly mounted on the top of the displacement measuring seat 31. The second inner probe 33 is fixedly mounted on the side wall of the vertical section of the second probe bracket 32. The side wall of the displacement measuring seat 31 is provided with a fixing groove 311. One end of the return spring 34 is fixedly connected to the bottom inner wall of the fixing groove 311, and the other end is fixedly connected to the lower side wall of the worktable 4.

[0034] It should be noted that in this embodiment, since the top of the support mechanism 1 is provided with a groove 111 and the longitudinal section of the groove 111 is an inverted T-shape, the bottom of the displacement measuring seat 31 is fixedly installed with a first slider, and the first slider is adapted to be disposed in the groove 111. Thus, the "displacement measuring seat 31 is slidably installed on the top of the support mechanism 1" is achieved through the cooperation of the first slider and the groove 111. The displacement measuring seat 31 has a fixing groove 311 on the side wall near the workbench 4. In other preferred embodiments, the return spring 34 may be omitted, and the displacement measuring seat 31 may be manually driven to return to its initial position.

[0035] The advantages of adopting the above-mentioned preferred scheme are: the second probe bracket is an L-shaped rod, which is not only conducive to fixing it on the displacement measuring seat, thereby realizing the displacement of the second inner probe, but also conducive to placing it inside the gear to be measured, so that the second inner probe abuts against the inner wall of the gear to be measured; the return spring is conducive to stretching or compressing when the displacement measuring seat moves, thereby accumulating force for the displacement measuring seat to return to its initial position.

[0036] Preferred, such as Figure 1 As shown, the fixed detection mechanism 2 includes: a fixed measuring base 21, a first probe bracket 22, and a first inner probe 23. The bottom end of the fixed measuring base 21 is fixedly installed on the top end of the support mechanism 1. The first probe bracket 22 is an L-shaped rod, and its horizontal section is fixedly installed on the top end of the fixed measuring base 21. The first inner probe 23 is fixedly installed on the side wall of the vertical section of the first probe bracket 22.

[0037] It should be noted that in this embodiment, since the top of the support mechanism 1 is provided with a groove 111, and the first inner probe 23 and the second inner probe 33 need to abut against the two furthest tooth grooves on the circumference of the gear spline, the first inner probe 23 and the second inner probe 33 need to be in a straight line. Therefore, the first probe bracket 22 and the second probe bracket 32 ​​also need to be in a straight line, and the fixed measuring seat 21 and the displacement measuring seat 31 also need to be in a straight line. Therefore, under the premise that the displacement measuring seat 31 slides along the groove 111, the fixed measuring seat 21 also needs to be fixed above the groove 111. To achieve this purpose, in this embodiment, a second slider is fixedly installed at the bottom of the fixed measuring seat 21, and the second slider is adapted to be disposed in the groove 111. After the fixed measuring seat 21 is moved to a suitable position at the top of the support mechanism 1 by the second slider along the groove 111, the fixed measuring seat 21 is fixed at the top of the support mechanism 1 by bolts or screws.

[0038] The advantages of adopting the above preferred solution are: the first probe bracket is an L-shaped rod, which is not only convenient to fix on the fixed measuring seat, but also convenient to place inside the gear to be measured, so that the first inner probe abuts against the inner wall of the gear to be measured.

[0039] Preferred, such as Figure 1As shown, the first internal test head 23 and the second internal test head 33 are arranged in opposite directions.

[0040] It should be noted that in this embodiment, the gear to be tested is a shaft tooth, and the teeth and grooves in the circumferential direction of the internal spline of the shaft tooth are symmetrically arranged. Therefore, under the premise that the first internal test head 23 and the second internal test head 33 are located on the same straight line, the first internal test head 23 and the second internal test head 33 either simultaneously abut against two oppositely arranged tooth blocks or simultaneously abut against the inner walls of two opposite tooth grooves. At this time, the distance between the inner walls of the two opposite tooth grooves is the distance between the two tooth grooves that are farthest apart on the circumference of the internal spline of the shaft tooth, i.e., the M value. In other embodiments, if the gear to be tested is a disc tooth, the teeth and slots in the circumferential direction of the spline inside the disc tooth are also symmetrically arranged.

[0041] The advantages of adopting the above preferred scheme are: it facilitates contact with the two tooth grooves furthest apart on the circumference of the internal spline of the gear, thereby enabling the detection of the M value.

[0042] Preferred, such as Figure 1 As shown, the workbench 4 is a tubular structure, with its bottom end fixedly installed on the top of the support mechanism 1. Two adjustment holes 41 are vertically provided on opposite sides of its sidewalls, and the adjustment holes 41 are through holes.

[0043] It should be noted that in this embodiment, the bottom end of the workbench 4 is fixedly installed on the top end of the top plate 11 by bolts or screws, and the workbench 4 is disposed between the fixed measuring seat 21 and the displacement measuring seat 31.

[0044] The advantages of adopting the above preferred solution are: the two adjustment holes are respectively set vertically on opposite sides of the side wall of the workbench, which is conducive to the first probe bracket and the second probe bracket passing through the workbench and avoids interference between the workbench and the first probe bracket and the second probe bracket when the workbench is fixedly installed at the top of the support mechanism.

[0045] Preferred, such as Figure 1 As shown, the horizontal sections of the first probe bracket 22 and the second probe bracket 32 ​​pass through the two adjustment holes 41 respectively, and the vertical sections of the first probe bracket 22 and the second probe bracket 32 ​​are arranged inside the workbench 4.

[0046] The advantages of adopting the above-mentioned preferred scheme are: it facilitates the first inner probe and the second inner probe to move in opposite directions inside the internal spline of the gear, thereby abutting against the two tooth grooves that are furthest apart on the circumference of the internal spline of the gear.

[0047] Preferred, such as Figure 3As shown, the displacement driving mechanism 5 includes a rotating handle 51 and a transmission rod 52. One end of the rotating handle 51 and one end of the transmission rod 52 are respectively fixedly connected to both ends of a first rotating shaft 53. The first rotating shaft 53 is rotatably connected to the side wall of the support mechanism 1. The rotating handle 51 is disposed outside the support mechanism 1, and the transmission rod 52 is disposed inside the support mechanism 1. The other end of the transmission rod 52 is hinged to the lower side wall of the displacement measuring seat 31 through a second rotating shaft 54.

[0048] It should be noted that in this embodiment, the first rotating shaft 53 is rotatably connected to the side wall of the support platform 12 in the support mechanism 1, and the rotating handle 51 is disposed outside the support platform 12, while the transmission rod 52 is disposed inside the support platform 12. The other end of the transmission rod 52 and the lower side wall of the displacement measuring seat 31 are rotatably sleeved on both ends of the second rotating shaft 54, that is, between the other end of the transmission rod 52 and the second rotating shaft 54, the displacement measuring seat 31 and the second rotating shaft 54 ​​can rotate relative to each other, but at the same time the transmission rod 52 can also transmit power to the displacement measuring seat 31 through the second rotating shaft 54, thereby driving the displacement measuring seat 31 to move. Furthermore, although the displacement trajectory of the other end of the transmission rod 52 is an arc, with a displacement along the direction of the slide groove 111 and a height displacement, the displacement of the second inner probe 33 inside the gear is small. Consequently, the displacement of the displacement measuring seat 31 along the slide groove 111 is also small. Therefore, the amount of vertical displacement of the displacement measuring seat 31 driven by the transmission rod 52 is also small. In addition, the longitudinal section of the slide groove 111 is an inverted T-shape, which allows for a certain gap between the first slider and the slide groove 111. This ensures that the first slider and the slide groove 111 are slidably connected while providing sufficient vertical displacement space for the displacement measuring seat 31.

[0049] The advantages of adopting the above preferred solution are: turning the handle facilitates the drive rod to move in an arc around the first rotating shaft, thereby driving the displacement measuring seat to move along the slide groove through the second rotating shaft, and thus realizing the displacement adjustment of the second inner probe inside the gear.

[0050] Preferred, such as Figure 2 As shown, the data reading mechanism 6 includes: a dial indicator 61, a fixed base 62, and a connecting bracket 63. The fixed base 62 is fixedly installed on the top of the support mechanism 1, the connecting bracket 63 is fixedly installed on the side wall of the displacement measuring base 31, and the dial indicator 61 is fixedly installed on the connecting bracket 63, with its measuring rod abutting against the fixed base 62.

[0051] It should be noted that in this embodiment, the fixing seat 62 is fixedly installed on the top of the top plate 11.

[0052] The advantages of adopting the above preferred solution are: the connecting bracket facilitates the synchronous displacement of the dial indicator with the displacement measuring seat, so that when the first inner probe and the second inner probe abut against the two tooth grooves furthest apart on the inner spline circumference, the M value can be measured by reading the value on the dial indicator.

[0053] Preferred, such as Figure 1 As shown, the support mechanism 1 includes: a top plate 11, a support platform 12, adjusting screws 13, and support feet 14. The top plate 11 is fixedly installed on the top of the support platform 12. The bottom end of the support platform 12 is provided with a plurality of threaded holes spaced apart circumferentially. The plurality of adjusting screws 13 are respectively threadedly connected to the plurality of threaded holes. The plurality of support feet 14 are respectively fixedly installed on the bottom end of the plurality of adjusting screws 13. The support feet 14 are located below the support platform 12. The worktable 4 is fixedly installed on the top of the top plate 11.

[0054] It should be noted that in this embodiment, the top plate 11 is horizontally disposed at the top of the support platform 12.

[0055] The advantages of adopting the above preferred solution are: the adjustment screw is connected to the threaded hole, which facilitates the lifting and lowering of the top plate and support platform, thereby adapting to different working heights.

[0056] Preferred, such as Figure 2 As shown, the top plate 11 is provided with a sliding groove 111 at its top end. The longitudinal section of the sliding groove 111 is an inverted T-shape. The fixed detection mechanism 2 is fixedly installed on the sliding groove 111, and the displacement detection mechanism 3 is slidably installed on the sliding groove 111.

[0057] It should be noted that, as described above, in this embodiment, after the fixed measuring seat 21 of the fixed detection mechanism 2 is moved to a suitable position at the top of the top plate 11 by the second slider along the slide groove 111, the fixed measuring seat 21 is fixed on the slide groove 111 by bolts or screws. The displacement measuring seat 31 of the displacement detection mechanism 3 is slidably mounted on the slide groove 111 through the sliding engagement of the first slider with the slide groove 111.

[0058] The advantages of adopting the above-mentioned preferred solution are that the slide groove is beneficial for guiding the sliding of the displacement detection mechanism and for keeping the fixed detection mechanism and the displacement detection mechanism on the same straight line.

[0059] The working process of Example 1 is described below: The first step is to fit a standard shaft tooth onto the vertical section of the first probe bracket 22 and the vertical section of the second probe bracket 32, and place this standard shaft tooth on the top of the worktable 4. The second step is to rotate the handle 51, causing the displacement measuring seat 31 to move the second inner probe 33 away from the first inner probe 23, until the first inner probe 23 and the second inner probe 33 respectively come into contact with the two furthest tooth grooves on the circumference of the standard shaft tooth spline. At this time, the return spring 34 is stretched and the value of the dial indicator 61 is zeroed (the zeroing operation is the existing technology of the dial indicator). Third, release the rotating handle 51. Under the return force of the return spring 34, the displacement measuring seat 31 drives the second inner probe 33 to move towards the first inner probe 23. Alternatively, in an embodiment without a return spring 34, the rotating handle 51 is rotated in the opposite direction to cause the displacement measuring seat 31 to drive the second inner probe 33 to move towards the first inner probe 23. After that, the standard shaft tooth can be taken out upwards, and the shaft tooth to be tested is placed on the vertical section of the first probe bracket 22 and the vertical section of the second probe bracket 32. The shaft tooth to be tested is then placed on the top of the worktable 4. Fourth, rotate the handle 51 again to move the displacement measuring seat 31 and the second inner probe 33 away from the first inner probe 23 until the first inner probe 23 and the second inner probe 33 respectively abut against the two furthest tooth grooves on the circumference of the internal spline of the shaft tooth to be tested. At this time, the return spring 34 is stretched, and the value on the dial indicator 61 will have positive and negative changes (if it is positive, it means that the M value of the internal spline of the shaft tooth to be tested is greater than the M value of the standard internal spline of the shaft tooth; if it is negative, it means that the M value of the internal spline of the shaft tooth to be tested is less than the M value of the standard internal spline of the shaft tooth). Fifth step, record the value on dial indicator 61 at this time, and add it to the M value of the standard internal spline of the shaft tooth to obtain the M value of the internal spline of the shaft tooth to be tested; Step 6: Release the rotating handle 51. Under the return force of the return spring 34, the displacement measuring seat 31 drives the second inner probe 33 to move closer to the first inner probe 23. Alternatively, in an embodiment without a return spring 34, rotate the rotating handle 51 in the opposite direction to move the displacement measuring seat 31 and the second inner probe 33 closer to the first inner probe 23. Then, rotate the shaft tooth to be tested by a certain angle, such as 90 degrees, and repeat steps 4 and 5 to obtain multiple sets of internal spline M values ​​of the shaft tooth to be tested. If the error between multiple sets of internal spline M values ​​of the shaft tooth to be tested is within the allowable error range, the average or median is taken as the final internal spline M value of the tested shaft tooth.

[0060] Example 2: Figure 4 As shown, this embodiment is for detecting the M value of the internal spline of the disc teeth.

[0061] It should be noted that in this embodiment, since the inner diameter of the disc tooth is larger than the outer diameter of the worktable 4, the disc tooth is sleeved on the vertical section of the first probe bracket 22 and the vertical section of the second probe bracket 32. The bottom end of the disc tooth is placed on the horizontal section of the first probe bracket 22 and the horizontal section of the second probe bracket 32. In addition, since the inner diameter of the disc tooth is larger, the first inner probe 23 and the second inner probe 33, which are longer than those in the first embodiment, are replaced. The positions of the first inner probe 23 on the side wall of the vertical section of the first probe bracket 22 and the second inner probe 33 on the side wall of the vertical section of the second probe bracket 32 ​​are adjusted respectively, so that the first inner probe 23 and the second inner probe 33 pass through the two adjustment holes 41 respectively and abut against the two tooth grooves that are farthest apart on the inner spline circumference of the disc tooth. In this embodiment, since the first inner probe 23 and the second inner probe 33, which are longer than those in Embodiment 1, are replaced, the displacement of the second inner probe 33 inside the disc teeth is also smaller. Therefore, the same gap is set between the first slider and the slide groove 111 as in Embodiment 1, which can still achieve the sliding engagement connection between the first slider and the slide groove 111 while ensuring that the displacement measuring seat 31 has sufficient vertical displacement space.

[0062] The specific operation process for detecting the M value of the internal spline of the disc teeth in Example 2 is similar to that in Example 1, and will not be repeated here.

[0063] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0066] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for detecting the M value of the internal spline of a reducer gear, characterized in that, include: The system comprises a support mechanism (1), a fixed detection mechanism (2), a displacement detection mechanism (3), a worktable (4), a displacement driving mechanism (5), and a data reading mechanism (6). The fixed detection mechanism (2) is fixedly installed on the top of the support mechanism (1). The displacement detection mechanism (3) is slidably installed on the top of the support mechanism (1). The worktable (4) is fixedly installed on the top of the support mechanism (1) and is located between the fixed detection mechanism (2) and the displacement detection mechanism (3). The displacement driving mechanism (5) is installed inside the support mechanism (1) and is connected to the displacement detection mechanism (3) for driving the displacement detection mechanism (3) to move. The data reading mechanism (6) is installed on the displacement detection mechanism (3).

2. The device for detecting the M value of the internal spline of the reducer gear according to claim 1, characterized in that, The displacement detection mechanism (3) includes: a displacement measuring seat (31), a second probe bracket (32), a second inner probe (33), and a return spring (34). The displacement measuring seat (31) is slidably installed on the top of the support mechanism (1). The second probe bracket (32) is an L-shaped rod, and its horizontal section is fixedly installed on the top of the displacement measuring seat (31). The second inner probe (33) is fixedly installed on the side wall of the vertical section of the second probe bracket (32). The side wall of the displacement measuring seat (31) is provided with a fixing groove (311) inward. One end of the return spring (34) is fixedly connected to the bottom inner wall of the fixing groove (311), and the other end is fixedly connected to the lower side wall of the worktable (4).

3. The device for detecting the M value of the internal spline of the reducer gear according to claim 2, characterized in that, The fixed testing mechanism (2) includes: a fixed measuring seat (21), a first probe bracket (22) and a first inner probe (23). The bottom end of the fixed measuring seat (21) is fixedly installed on the top end of the support mechanism (1). The first probe bracket (22) is an L-shaped rod, and its horizontal section is fixedly installed on the top end of the fixed measuring seat (21). The first inner probe (23) is fixedly installed on the side wall of the vertical section of the first probe bracket (22).

4. The device for detecting the M value of the internal spline of the reducer gear according to claim 3, characterized in that, The first internal test head (23) and the second internal test head (33) are set in opposite directions.

5. The device for detecting the M value of the internal spline of the reducer gear according to claim 3, characterized in that, The workbench (4) is a tubular structure, with its bottom end fixedly installed on the top of the support mechanism (1). Two adjustment holes (41) are vertically provided on the opposite side of its sidewalls. The adjustment holes (41) are through holes.

6. The device for detecting the M value of the internal spline of the reducer gear according to claim 5, characterized in that, The horizontal sections of the first probe bracket (22) and the second probe bracket (32) pass through the two adjustment holes (41) respectively, and the vertical sections of the first probe bracket (22) and the second probe bracket (32) are arranged inside the workbench (4).

7. The device for detecting the M value of the internal spline of the reducer gear according to claim 2, characterized in that, The displacement driving mechanism (5) includes a rotating handle (51) and a transmission rod (52). One end of the rotating handle (51) and one end of the transmission rod (52) are respectively fixedly connected to the two ends of a first rotating shaft (53). The first rotating shaft (53) is rotatably connected to the side wall of the support mechanism (1). The rotating handle (51) is located outside the support mechanism (1), and the transmission rod (52) is located inside the support mechanism (1). The other end of the transmission rod (52) is hinged to the lower side wall of the displacement measuring seat (31) through a second rotating shaft (54).

8. The device for detecting the M value of the internal spline of the reducer gear according to claim 2, characterized in that, The data reading mechanism (6) includes a dial indicator (61), a fixed base (62), and a connecting bracket (63). The fixed base (62) is fixedly installed on the top of the support mechanism (1), and the connecting bracket (63) is fixedly installed on the side wall of the displacement measuring base (31). The dial indicator (61) is fixedly installed on the connecting bracket (63), and its measuring rod abuts against the fixed base (62).

9. The device for detecting the M value of the internal spline of a reducer gear according to any one of claims 1-8, characterized in that, The support mechanism (1) includes: a top plate (11), a support platform (12), an adjusting screw (13), and a support foot (14). The top plate (11) is fixedly installed on the top of the support platform (12). The bottom end of the support platform (12) is provided with multiple threaded holes spaced apart in the circumferential direction. Multiple adjusting screws (13) are respectively threadedly connected to multiple threaded holes. Multiple support feet (14) are respectively fixedly installed on the bottom end of multiple adjusting screws (13). The support feet (14) are located below the support platform (12). The worktable (4) is fixedly installed on the top of the top plate (11).

10. The device for detecting the M value of the internal spline of the reducer gear according to claim 9, characterized in that, The top plate (11) is provided with a slide groove (111) at its top end. The longitudinal section of the slide groove (111) is an inverted T-shape. The fixed detection mechanism (2) is fixedly installed on the slide groove (111), and the displacement detection mechanism (3) is slidably installed on the slide groove (111).

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