Gear shaft system meshing detection device and method

Abstract

The invention discloses a gear shaft system meshing detection device and method. The gear shaft system meshing detection device comprises a machine body mechanism; the tensioning loading mechanism comprises a first clamping assembly used for clamping an intermediate shaft of the gear shaft system; the input shaft detection mechanism comprises a second clamping assembly used for clamping the input shaft of the gear shaft system; the first driving assembly is used for driving the input shaft to be close to the intermediate shaft and enabling a first pair of gears on the gear shaft system to be in meshing transmission; the differential shaft detection mechanism comprises a third clamping assembly which is used for clamping a differential shaft of the gear shaft system; the second driving assembly is used for driving the differential shaft to be close to the intermediate shaft and enabling a second pair of gears on the gear shaft system to be in meshing transmission; the first displacement detection assembly is used for detecting and recording the displacement amount of the input shaft detection mechanism; and the second displacement detection assembly is used for detecting and recording the displacement of the differential shaft detection mechanism. According to the invention, high-precision gear shaft system center distance displacement and measurement can be realized, and the measurement error is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile transmissions, and in particular to a gear shaft engagement detection device and method. Background Art

[0002] Existing gear mesh testing equipment only tests the gear mesh of common, general-purpose transmission assemblies or measures the center distance of the gear shaft system to infer gear mesh clearance. This low-accuracy test fails to accurately reflect the true gear mesh condition. Testing the center distance of the gear shaft system is particularly important in this process. Summary of the Invention

[0003] The present application discloses a gear shaft meshing detection device and method, which can realize high-precision gear shaft center distance displacement and measurement.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] A gear shaft system engagement detection device, comprising:

[0006] The machine body includes a column and a first linear guide rail and a second linear guide rail fixed to the column, wherein the first linear guide rail extends along a first direction and the second linear guide rail extends along a second direction; the second linear guide rail includes a first linear rail segment and a second linear rail segment, and the first linear rail segment and the second linear rail segment are respectively located on both sides of the first linear guide rail;

[0007] a tensioning and loading mechanism slidably mounted on the first linear guide rail, comprising a first clamping assembly, the first clamping assembly comprising a first clamping portion, a second clamping portion, and a first driving portion, the first driving portion being in driving connection with the first clamping portion and / or the second clamping portion for driving the first clamping portion along the first linear guide rail toward or away from the second clamping portion to clamp or release the intermediate shaft of the gear shaft system;

[0008] an input shaft detection mechanism slidably mounted on the first linear rail segment, comprising a second clamping assembly for clamping the input shaft of the gear shaft system along a first direction;

[0009] a first drive assembly, in transmission connection with the input shaft detection mechanism, for driving the input shaft detection mechanism to slide along the first linear track segment, so as to drive the input shaft to approach the intermediate shaft and cause the first pair of gears on the gear shaft system to engage for transmission;

[0010] a differential shaft detection mechanism slidably mounted on the second linear rail segment, comprising a third clamping assembly for clamping the differential shaft of the gear shaft system along a first direction;

[0011] a second drive assembly, drivingly connected to the differential shaft detection mechanism, for driving the differential shaft detection mechanism to slide along the second linear track segment, thereby driving the differential shaft to approach the intermediate shaft and causing the second pair of gears on the gear shaft system to engage for transmission;

[0012] A first displacement detection component is used to detect the actual center distance between the input shaft and the intermediate shaft in real time;

[0013] The second displacement detection component is used to detect the actual center distance between the differential shaft and the intermediate shaft in real time.

[0014] The gear shaft engagement detection device includes a body mechanism, a tensioning and loading mechanism, an input shaft detection mechanism, and a differential shaft detection mechanism. Specifically, the body mechanism includes a column, a first linear guide, and a second linear guide. The first and second linear guides are both fixed to the column and extend in a first direction and a second direction, respectively. The second linear guide further includes a first linear rail segment and a second linear rail segment located on either side of the first linear guide. The tensioning and loading mechanism is slidably mounted on the first linear guide, the input shaft detection mechanism is slidably mounted on the first linear rail segment, and the differential shaft detection mechanism is slidably mounted on the second linear rail segment.

[0015] The tensioning and loading mechanism's first clamping assembly comprises an upper first clamping portion, a lower second clamping portion, and a first drive unit in transmission connection with the first clamping portion. The first drive unit drives the first clamping portion to slide along a first linear guide rail, moving it toward or away from the second clamping portion to clamp or release the intermediate shaft of the gear train. The second clamping portion is fixed to the lower support plate by its own weight via a limit column and can slide along the first linear guide rail.

[0016] The input shaft detection mechanism includes a second clamping assembly for clamping the input shaft of the gear train. The main mechanism also includes a first drive assembly fixed to the column. The first drive assembly is in driving connection with the input shaft detection mechanism and is configured to drive the input shaft detection mechanism to slide along the first linear track segment, thereby driving the input shaft toward the intermediate shaft and meshing the first pair of gears on the gear train.

[0017] The differential shaft detection mechanism includes a third clamping assembly for clamping the differential shaft of the gear shaft system. The body mechanism also includes a second drive assembly fixed to the column. The second drive assembly is drivingly connected to the differential shaft detection mechanism and is used to drive the differential shaft detection mechanism to slide along the second linear track segment, thereby driving the differential shaft toward the intermediate shaft and engaging the second pair of gears on the gear shaft system.

[0018] The gear shaft engagement detection device also includes a first displacement detection component and a second displacement detection component, which are used to control the displacement of the input shaft and the differential shaft according to a preset center distance value and measure the actual center distance of the gear shaft in real time. Specifically, after the gear shaft is placed, the first drive component is controlled to drive the input shaft to move closer to the intermediate shaft according to the preset first center distance value, and the first displacement detection component detects the actual center distance between the input shaft and the intermediate shaft in real time. When the actual center distance between the input shaft and the intermediate shaft detected by the first displacement detection component is the same as the preset first center distance value, the first drive component is controlled to stop, that is, the input shaft detection mechanism moves into position. Similarly, the second drive component is controlled to drive the differential shaft to move closer to the intermediate shaft according to the preset second center distance value, and the second displacement detection component detects the actual center distance between the differential shaft and the intermediate shaft. No further details are given here.

[0019] The gear shaft meshing detection device of the embodiment of the present application clamps the intermediate shaft via a first clamping assembly on the tensioning loading mechanism, clamps the input shaft via a second clamping assembly on the input shaft detection mechanism, and clamps the differential shaft via a third clamping assembly on the differential shaft detection mechanism. The input shaft and differential shaft are then moved toward the intermediate shaft via a first drive assembly and a second drive assembly, achieving meshing transmission between the two pairs of gears. Finally, the actual center distance between the input shaft and the differential is detected via a first displacement detection assembly and a second displacement detection assembly, which allows the input shaft and differential shaft to be moved to a preset center distance. Furthermore, the present application is designed to fix the position of the intermediate shaft while moving the input shaft and differential shaft on either side, enabling the detection device to adapt to gear shafts with different center distances. The input shaft and differential shaft move horizontally according to the preset center distance value, enabling real-time measurement of the actual center distance of the gear shaft system. Compared to a fixed input shaft or fixed differential shaft, this method can effectively reduce measurement errors and improve measurement accuracy.

[0020] In some embodiments, the first displacement detection assembly and / or the second displacement detection assembly includes a displacement sensor and a detection block cooperating with the displacement sensor;

[0021] The displacement sensor is fixed to the input shaft detection mechanism and / or the differential shaft detection mechanism, and the detection block is fixed to the first bottom plate of the first linear guide rail;

[0022] Alternatively, the displacement sensor is fixed to the first base plate of the first linear guide rail, and the detection block is fixed to the input shaft detection mechanism and / or the differential shaft detection mechanism.

[0023] In some embodiments, the tension loading mechanism further comprises a tension assembly;

[0024] The tensioning assembly includes a tensioning drive, a tensioning rod and a cone block;

[0025] One end of the tensioning rod is connected to the tensioning drive transmission, and the other end is fixed with the cone block;

[0026] The tensioning rod is provided with a tensioning sleeve at one end close to the cone block;

[0027] The tensioning drive drives the cone block to slide into the interior of the tensioning sleeve along a first direction through the tensioning pull rod and tightens the tensioning sleeve to form the first clamping portion.

[0028] In some embodiments, the size of the cone block gradually increases along the direction of the tensioning drive to the cone block.

[0029] In some embodiments, the tension loading mechanism further comprises a third drive assembly;

[0030] The third driving assembly is in transmission connection with the first clamping portion, and is used for driving the intermediate shaft to rotate when the first clamping assembly clamps the intermediate shaft.

[0031] In some embodiments, the tension loading mechanism further includes a first angle encoder for measuring the rotation angle of the intermediate shaft.

[0032] In some embodiments, the input shaft detection mechanism further includes a third linear guide rail, wherein the third linear guide rail extends along the first direction;

[0033] The second clamping assembly includes a third clamping part, a fourth clamping part and a second driving part. The second driving part is transmission-connected to the third clamping part and / or the fourth clamping part, and is used to drive the third clamping part along the third linear guide rail to approach or move away from the fourth clamping part to clamp or release the input shaft of the gear shaft system.

[0034] In some embodiments, the input shaft detection mechanism further includes a second angle encoder for measuring the rotation angle of the input shaft.

[0035] In some embodiments, the differential shaft detection mechanism further includes a fourth linear guide rail, wherein the fourth linear guide rail extends along the first direction;

[0036] The third clamping assembly includes a fifth clamping part, a sixth clamping part and a third driving part. The third driving part is in transmission connection with the fifth clamping part and / or the sixth clamping part, and is used to drive the fifth clamping part along the fourth linear guide rail to approach or move away from the sixth clamping part to clamp or release the differential shaft of the gear shaft system.

[0037] In some embodiments, the differential shaft detection mechanism further includes a third angle encoder for measuring the rotation angle of the differential shaft.

[0038] The present application also provides a gear shaft meshing detection method, comprising:

[0039] Placing the gear shaft system in the gear shaft system engagement detection device so that the first clamping assembly clamps the intermediate shaft, the second clamping assembly clamps the input shaft, and the third clamping assembly clamps the differential shaft;

[0040] According to a preset first center distance value, the first drive assembly drives the input shaft detection mechanism to drive the input shaft close to the intermediate shaft so that the first pair of gears engages, and the first displacement detection assembly detects the actual center distance between the input shaft and the intermediate shaft in real time;

[0041] According to the preset second center distance value, the second drive assembly drives the differential shaft detection mechanism to drive the differential shaft close to the intermediate shaft so that the second pair of gears engages, and the second displacement detection assembly detects the actual center distance between the differential shaft and the intermediate shaft in real time;

[0042] When the actual center distance between the input shaft and the intermediate shaft detected by the first displacement detection component is the same as the preset first center distance value, the first drive component is controlled to stop moving; when the actual center distance between the differential shaft and the intermediate shaft detected by the second displacement detection component is the same as the preset second center distance value, the second drive component is controlled to stop moving.

[0043] In some embodiments, the gear shaft engagement detection method further includes:

[0044] The third drive assembly drives the first clamping portion to rotate the intermediate shaft, and the gear meshing transmission in the gear shaft system further drives the input shaft and the differential shaft to rotate;

[0045] The first angle encoder, the second angle encoder and the third angle encoder respectively record the rotation angles of the intermediate shaft, the input shaft and the differential shaft;

[0046] Based on preset rules, the 360-degree variation curve of the tooth side clearance of the intermediate shaft, input shaft, differential shaft and full gear shaft system and the gear transmission error are calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic structural diagram of a gear shaft engagement detection device provided in an embodiment of the present application;

[0048] Figure 2 A schematic structural diagram of a machine body mechanism provided in an embodiment of the present application;

[0049] Figure 3 A schematic structural diagram of a first drive assembly provided in an embodiment of the present application;

[0050] Figure 4 A schematic structural diagram of an input shaft detection mechanism provided in an embodiment of the present application;

[0051] Figure 5 A schematic structural diagram of an input shaft detection mechanism provided in an embodiment of the present application;

[0052] Figure 6 A schematic structural diagram of a differential shaft detection mechanism provided in an embodiment of the present application;

[0053] Figure 7 A schematic structural diagram of a tension loading mechanism provided in an embodiment of the present application;

[0054] Figure 8 A schematic structural diagram of a tension loading mechanism provided in an embodiment of the present application;

[0055] Figure 9-10 A gear shaft meshing detection method is provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] Gear transmission, as a transmission mechanism with a long history, is also widely used in the field of modern machinery. Gear transmission has a series of advantages, such as constant instantaneous transmission ratio, good stability, accurate transmission of motion, a large adjustable range of transmission power and speed, compact structure, large transmission ratio, high-efficiency transmission, and long service life. Therefore, it has become the first choice for transmission mechanisms in automobiles, ships, self-propelled artillery, aerospace, and many industrial machines. The gear meshing state (clearance, transmission error, etc.) is an important indicator for evaluating the quality of tooth meshing, which is directly related to the working accuracy, vibration noise, reliability, and service life of the gear transmission. For this reason, gear meshing testing machines have a wide range of application scenarios in many industries.

[0057] For example, in a new energy electric drive, the reducer contains three gear shafts, with two pairs of meshing gears. Due to the high input shaft speed, the meshing state of the gears must be inspected to ensure operating accuracy, appropriate vibration and noise levels, reliability, and service life. This ensures assembly quality and a qualified product.

[0058] Existing gear meshing detection equipment only performs gear meshing detection on common and general transmission assemblies or detects the center distance of the gear shaft system to calculate the gear meshing clearance. Its detection accuracy is low and it cannot truly reflect the gear meshing condition.

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two.

[0060] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more.

[0061] like Figures 1-8 As shown, an embodiment of the present application provides a gear shaft engagement detection device, comprising:

[0062] The machine body 100 includes a column 101 and a first linear guide 102 and a second linear guide 103 fixed to the column 101. The first linear guide 102 extends along a first direction, and the second linear guide 103 extends along a second direction. The second linear guide 103 includes a first linear rail segment 106 and a second linear rail segment 107, which are respectively located on either side of the first linear guide 102.

[0063] The tensioning and loading mechanism 200 is slidably mounted on the first linear guide rail 102 and includes a first clamping assembly 201. The first clamping assembly 201 includes a first clamping portion 202, a second clamping portion 203, and a first driving portion 204. The first driving portion 204 is in driving connection with the first clamping portion 202 and / or the second clamping portion 203 and is configured to drive the first clamping portion 202 toward or away from the second clamping portion 203 along the first linear guide rail 102 to clamp or release the intermediate shaft of the gear shaft system.

[0064] The input shaft detection mechanism 300 is slidably mounted on the first linear rail segment 106 and includes a second clamping assembly 301 for clamping the input shaft of the gear shaft system along a first direction;

[0065] The first drive assembly 500 is in transmission connection with the input shaft detection mechanism 300 and is used to drive the input shaft detection mechanism 300 to slide along the first linear track segment 106, thereby driving the input shaft to approach the intermediate shaft and causing the first pair of gears on the gear shaft system to engage and transmit the gears;

[0066] The differential shaft detection mechanism 400 is slidably mounted on the second linear rail segment 107 and includes a third clamping assembly 401 for clamping the differential shaft of the gear shaft system along a first direction;

[0067] The second drive assembly 600 is in driving connection with the differential shaft detection mechanism 400 and is used to drive the differential shaft detection mechanism 400 to slide along the second linear track segment 107, thereby driving the differential shaft to approach the intermediate shaft and causing the second pair of gears on the gear shaft system to engage for transmission;

[0068] A first displacement detection component is used to detect the actual center distance between the input shaft and the intermediate shaft in real time;

[0069] The second displacement detection component is used to detect the actual center distance between the differential shaft and the intermediate shaft in real time.

[0070] One possible implementation method is Figure 1 As shown, the gear shaft meshing detection device of the embodiment of the present application includes a body mechanism 100, a tensioning loading mechanism 200, an input shaft detection mechanism 300 and a differential shaft detection mechanism 400. Specifically, referring to Figure 2 The machine body 100 includes a column 101, a first linear guide rail 102 and a second linear guide rail 103, wherein the column 101 is fixed to the equipment base 104, and the first linear guide rail 102 is fixed to the first bottom plate 105 of the column 101 and extends in a first direction ( Figure 2 The second linear guide rail 103 is fixed to the column 101 and extends along the second direction ( Figure 2 (x direction). Figure 2 As shown in FIG, the second linear guide rail 103 further includes a first linear rail segment 106 located on the right side of the first linear guide rail 102 and a second linear rail segment 107 located on the left side of the first linear guide rail 102. Figure 1 and Figure 2 The tension loading mechanism 200 is slidably mounted on the first linear guide rail 102 , the input shaft detection mechanism 300 is slidably mounted on the first linear rail segment 106 , and the differential shaft detection mechanism 400 is slidably mounted on the second linear rail segment 107 .

[0071] Reference Figure 1 ,by Figure 1In the orientation shown in FIG, the first clamping assembly 201 of the tensioning and loading mechanism 200 includes an upper first clamping portion 202, a lower second clamping portion 203, and a first drive portion 204 in transmission connection with the first clamping portion 202. The first drive portion 204, which may be a locking cylinder or the like, is used to drive the first clamping portion 202 to slide along the first linear guide 102 toward or away from the second clamping portion 203, thereby clamping or releasing the intermediate shaft of the gear shaft system. It should be noted that the second clamping portion 203 is fixed to the lower support plate by its own weight via a limit column and can slide along the first linear guide 102.

[0072] The input shaft detection mechanism 300 includes a second clamping assembly 301 for clamping the input shaft of the gear shaft system along the first direction. The body mechanism 100 also includes a first driving assembly 500 fixed to the right side of the column 101. Figure 3 The first drive assembly 500 includes a first servo motor 501, a first driving wheel 502, a first belt 503, a first driven wheel 504, a screw 505 and a push rod 506, wherein the first servo motor 501 is transmission-connected to the first driving wheel 502, the first driven wheel 504 is transmission-connected to the first driving wheel 502 through the first belt 503, one end of the screw 505 is transmission-connected to the first driven wheel 504, and the other end is fixedly connected to the push rod 506, and the end of the push rod 506 away from the screw 505 is transmission-connected to the input shaft detection mechanism 300, which is used to drive the input shaft detection mechanism 300 to slide along the first linear rail segment 106, so as to drive the input shaft to approach the intermediate shaft and enable the first pair of gears on the gear shaft system to engage for transmission.

[0073] The differential shaft detection mechanism 400 includes a third clamping assembly 401, which is used to clamp the differential shaft of the gear shaft system along a first direction. The body mechanism 100 also includes a second drive assembly 600, fixed to the left side of the column 101. The second drive assembly 600 is in driving connection with the differential shaft detection mechanism 400 and is used to drive the differential shaft detection mechanism 400 to slide along the second linear track segment 107, thereby driving the differential shaft toward the intermediate shaft and engaging the second pair of gears on the gear shaft system. The second drive assembly 600 shares the same structural features as the first drive assembly 500 and will not be further described here.

[0074] The gear shaft engagement detection device also includes a first displacement detection assembly and a second displacement detection assembly, which are used to control the displacement of the input shaft and the differential shaft according to a preset center distance value and measure the actual center distance of the gear shaft in real time. Specifically, after the gear shaft is placed, the first drive assembly 500 is controlled to drive the input shaft to move closer to the intermediate shaft according to the preset first center distance value. The first displacement detection assembly detects the actual center distance between the input shaft and the intermediate shaft in real time. When the actual center distance between the input shaft and the intermediate shaft detected by the first displacement detection assembly is the same as the preset first center distance value, the first drive assembly is controlled to stop, that is, the input shaft detection mechanism moves into position. Similarly, the second drive assembly is controlled to drive the differential shaft to move closer to the intermediate shaft according to the preset second center distance value. The second displacement detection assembly detects the actual center distance between the differential shaft and the intermediate shaft in real time. This will not be repeated here.

[0075] The gear shaft meshing detection device of the present embodiment clamps the intermediate shaft via the first clamping assembly 201 of the tensioning loading mechanism 200, the input shaft via the second clamping assembly 301 of the input shaft detection mechanism 300, and the differential shaft via the third clamping assembly 401 of the differential shaft detection mechanism 400. The first and second drive assemblies 500 and 600 move the input shaft and differential shaft toward the intermediate shaft, achieving meshing transmission between the two pairs of gears. Finally, the first and second displacement detection assemblies detect the actual center distance between the input shaft and differential in real time, allowing the input shaft and differential to move to a preset center distance. This design, which fixes the intermediate shaft position and moves the input and differential shafts on either side, allows the detection device to adapt to gear shafts with different center distances. The input shaft and differential shaft move horizontally according to the preset center distance value, enabling real-time measurement of the actual center distance of the gear shaft system. Compared to fixed input shafts or fixed differential shafts, this method effectively reduces measurement error and improves measurement accuracy.

[0076] In some embodiments, the first displacement detection assembly and / or the second displacement detection assembly includes a displacement sensor and a detection block cooperating with the displacement sensor;

[0077] The displacement sensor is fixed to the input shaft detection mechanism 300 and / or the differential shaft detection mechanism 400, and the detection block is fixed to the first bottom plate 105 of the first linear guide rail 102;

[0078] Alternatively, the displacement sensor is fixed to the first base plate 105 of the first linear guide rail 102 , and the detection block is fixed to the input shaft detection mechanism 300 and / or the differential shaft detection mechanism 400 .

[0079] In one possible implementation, the first displacement detection assembly includes a first displacement sensor 701 and a first detection block 702, and the second displacement detection assembly includes a second displacement sensor 801 and a second detection block 802. Figure 2 ,by Figure 2 In the orientation shown, the first detection block 702 is fixedly mounted on the right side of the first base plate 105, and the second detection block 802 is fixedly mounted on the left side of the first base plate 105. Figure 4 The first displacement sensor 701 is fixedly mounted on the side of the second base plate 305 of the input shaft detection mechanism 300 facing the first detection block 702. The contact of the first displacement sensor 701 contacts the surface of the first detection block 702 and can display the reading in real time. As the input shaft detection mechanism 300 moves horizontally, the internal spring of the first displacement sensor 701 is compressed, and the actual center distance between the input shaft and the intermediate shaft changes. When the value displayed by the first displacement sensor 701 is the same as the preset first center distance value, the input shaft detection mechanism 300 is controlled to stop moving, that is, the input shaft detection mechanism 300 moves into place. Exemplarily, the first displacement sensor 701 can be a linear displacement sensor. A first guide rail clamp 306 is fixedly provided on the back of the second base plate 305. The first guide rail clamp 306 is slidably mounted on the first linear rail segment 106 and is used to clamp the first guide rail clamp 306 after the first detection block 702 detects that the input shaft has moved horizontally to the preset first center distance position.

[0080] Reference Figure 6 The second displacement sensor 801 is fixedly mounted on the side of the third base plate 405 of the differential shaft detection mechanism 400, facing the second detection block 802. The operating principle of the second displacement sensor 801 is the same as that of the first displacement sensor 701. The second displacement sensor 801 can be a linear displacement sensor, which will not be described in detail here. A second guide rail clamp 406 is fixedly mounted on the back of the third base plate 405. The second guide rail clamp 406 is slidably mounted on the second linear rail segment 107 and is used to clamp the second linear rail segment 107 when the second detection block 802 detects that the differential shaft has moved horizontally to the preset second center distance position.

[0081] It should be noted that the first displacement sensor 701 and the second displacement sensor 801 can also be fixed on the right and left sides of the first base plate 105, and the first detection block 702 and the second detection block 802 can also be fixed on the input shaft detection mechanism 300 and / or the differential shaft detection mechanism 400.

[0082] In some embodiments, the tension loading mechanism 200 further includes a tensioning assembly;

[0083] The tensioning assembly includes a tensioning drive 205, a tensioning rod 206 and a cone block 207;

[0084] One end of the tensioning rod 206 is in transmission connection with the tensioning driver 205, and the other end is fixed with a cone block 207;

[0085] A tension sleeve 208 is sleeved on one end of the tension rod 206 close to the cone block 207;

[0086] The tensioning driver 205 drives the cone block 207 to slide into the tensioning sleeve 208 along a first direction through the tensioning pull rod 206 and tighten the tensioning sleeve 208 to form the first clamping portion 202 .

[0087] One possible implementation method is Figure 7 As shown, a tapered block 207 is provided at the end of the tension rod 206, and a tension sleeve 208 is mounted on a tension chuck mounting base 209. The tension driver 205 pulls the tension rod 206, causing the tapered block 207 to move upward with the tension rod 206 and into the interior of the tension sleeve 208, thereby tightening the tapered block 207 against the tension sleeve 208. The tension driver 205 can be a tension cylinder, for example. Because the center hole above the intermediate shaft is compatible with the tension sleeve 208, when the tension sleeve 208 is tightened, it generates a clamping force between the intermediate shaft and the intermediate shaft, thereby achieving contact and connection with the intermediate shaft, and further enabling the tension sleeve 208 to drive the intermediate shaft to rotate.

[0088] Reference Figure 8 The second clamping part 203 includes a first centering pin 210, a first bearing locating sleeve 211, and a first centering pin sleeve 212. The first bearing locating sleeve 211 is fixedly mounted on the first tooling plate 213. The first centering pin 210 passes through the first bearing locating sleeve 211 and the first tooling plate 213 and is fixedly connected to the first top piece sleeve 212. The first top piece sleeve 212 supports and positions the workpiece. A center hole is provided below the intermediate shaft to match the first centering pin 210. When the intermediate shaft is placed on the first bearing locating sleeve 211, the center hole cooperates with the first centering pin 210 to form the second clamping part 203. The second clamping part also includes a spring 215 provided between the first tooling plate 213 and the first top piece sleeve 212 and sleeved on the guide column 214. It acts as a buffer when the workpiece is placed, thereby avoiding damage to the equipment and extending its service life.

[0089] In some embodiments, the size of the cone block 207 gradually increases along the direction from the tensioning drive 205 to the cone block 207 .

[0090] In one possible implementation, the cross-sectional dimensions of the conical block 207 gradually increase from the first clamping portion 202 to the second clamping portion 203, thereby tightening the tension sleeve 208 when the tensioning rod 206 pulls the conical block 207 into the tension sleeve 208. For example, the conical block 207 may be in the shape of a truncated cone or a trapezoidal column with a smaller top and a larger bottom.

[0091] In some embodiments, the tension loading mechanism 200 further includes a third drive assembly 216;

[0092] The third driving assembly 216 is in transmission connection with the first clamping portion 202 , and is used to drive the intermediate shaft to rotate when the first clamping assembly 201 clamps the intermediate shaft.

[0093] One possible implementation method is Figure 7 As shown, the third drive assembly 216 includes a second servo motor 217, a second driving pulley 218, a second belt 219, and a second driven pulley 220. The second servo motor 217 is in transmission connection with the second driving pulley 218, which in turn is in transmission connection with the second driven pulley 220 via the second belt 219. The second driving pulley 218 is in transmission connection with a tensioning sleeve 221. When the tensioning sleeve 208 tightens the intermediate shaft, the tensioning sleeve 221 also tightens the tensioning rod 206, causing it to rotate. This, in turn, allows the tensioning sleeve 208 to drive the intermediate shaft. Simultaneously, the input shaft and differential shaft rotate through the meshing of the gear train.

[0094] In some embodiments, the tension loading mechanism 200 further includes a first angle encoder 222 for measuring the rotation angle of the intermediate shaft.

[0095] One possible implementation method is Figure 7 As shown, the tensioning loading mechanism 200 is also provided with a loading box 223, a first encoder mounting seat 224 and a first angle encoder 222. The first angle encoder 222 is mounted on the loading box 223 through the first encoder mounting seat 224, and is sleeved with a tensioning rod 206 for indirectly measuring the rotation angle of the intermediate shaft, and calculating the 360-degree change curve of the tooth side clearance and the gear transmission error through a calculation formula.

[0096] In some embodiments, the input shaft detection mechanism 300 further includes a third linear guide rail 307 , and the third linear guide rail 307 extends along the first direction;

[0097] The second clamping assembly 301 includes a third clamping part 302, a fourth clamping part 303 and a second driving part 304. The second driving part 304 is transmission-connected to the third clamping part 302 and / or the fourth clamping part 303, and is used to drive the third clamping part 302 along the third linear guide rail 307 to approach or move away from the fourth clamping part 303 to clamp or release the input shaft of the gear shaft system.

[0098] One possible implementation method is Figure 5As shown, the third clamping portion 302 and the fourth clamping portion 303 are slidably mounted on the third linear guide 307. The third clamping portion 302 includes a second centering tip 309 fixed to the second top sleeve 308, which is used to mate with the center hole above the input shaft. The fourth clamping portion 303 includes a third centering tip 310 and a second bearing locating sleeve 311. The second bearing locating sleeve 311 is fixed to the second tooling plate 312. The third centering tip 310 is located above the second bearing locating sleeve 311. When the input shaft is placed on the second bearing locating sleeve 311, the third centering tip 310 mates with the center hole below the input shaft. The third clamping portion 302 is driven by the second driving portion 304 to move closer to the fourth clamping portion 303 to clamp the input shaft. The second driving portion 304 can be a locking cylinder, etc. It should be noted that the fourth clamping part 303 also includes a first mounting box 313 and a spring 315 provided between the second tooling plate 312 and the first mounting box 313 and sleeved on the guide column 314, which plays a buffering role when placing the workpiece, avoids equipment damage and extends the service life.

[0099] It should be supplemented that the second driving portion 304 can also drive the fourth clamping portion 303 to slide close to the third clamping portion 302 to clamp the input shaft.

[0100] In some embodiments, the input shaft detection mechanism 300 further includes a second angle encoder 317 for measuring the rotation angle of the input shaft.

[0101] One possible implementation method is Figure 5 As shown, the fourth clamping portion 303 also includes a first pull rod 316 that penetrates the second bearing locating sleeve 311 and the first mounting housing 313 and is connected to the third tip 310, which is used to secure the third tip 310 above the second bearing locating sleeve 311. A second encoder mounting seat 318 and a second angle encoder 317 are fixed below the first mounting housing 313. The second angle encoder 317 is mounted to the first mounting housing 313 via the second encoder mounting seat 318 and is sleeved with the first pull rod 316. This is used to indirectly measure the rotation angle of the input shaft and calculate the 360-degree variation curve of the tooth backlash and the gear transmission error using a calculation formula.

[0102] In some embodiments, the differential shaft detection mechanism 400 further includes a fourth linear guide rail 407 , and the fourth linear guide rail 407 extends along the first direction;

[0103] The third clamping assembly 401 includes a fifth clamping part 402, a sixth clamping part 403 and a third driving part 404. The third driving part 404 is transmission-connected to the fifth clamping part 402 and / or the sixth clamping part 403, and is used to drive the fifth clamping part 402 along the fourth linear guide rail 407 to approach or move away from the sixth clamping part 403 to clamp or release the differential shaft of the gear shaft system.

[0104] One possible implementation method is Figure 6 As shown, the fifth clamping portion 402 and the sixth clamping portion 403 are slidably mounted on the fourth linear guide 407. The fifth clamping portion 402 includes a fourth centering tip 409 fixed to the third top sleeve 408, which is used to mate with the center hole above the differential shaft. The sixth clamping portion 403 includes a fifth centering tip 410 and a third bearing locating sleeve 411. The third bearing locating sleeve 411 is fixed to the third tooling plate 412. The fifth centering tip 410 is located above the third bearing locating sleeve 411. When the differential shaft is placed on the third bearing locating sleeve 411, the fifth centering tip 410 mates with the center hole below the differential shaft. The fifth clamping portion 402 is driven by the third driving portion 404 to move closer to the sixth clamping portion 403 to clamp the differential shaft. The third driving portion 404 can be a locking cylinder, etc. It should be noted that the sixth clamping part 403 also includes a second mounting box 413 and a spring 415 mounted on the guide column 414 between the third tooling plate 412 and the second mounting box 413, which plays a buffering role when placing the workpiece, avoids equipment damage, and extends its service life.

[0105] It should be supplemented that the third driving portion 404 can also drive the sixth clamping portion 403 to slide close to the fifth clamping portion 402 to achieve clamping of the differential shaft.

[0106] In some embodiments, the differential shaft detection mechanism 400 further includes a third angle encoder 417 for measuring the rotation angle of the differential shaft.

[0107] One possible implementation method is Figure 4 As shown, the sixth clamping portion 403 further includes a second pull rod 416 that passes through the third bearing locating sleeve 411 and the second mounting housing 413 and is connected to the fifth tip 410, for securing the fifth tip 410 above the third bearing locating sleeve 411. A third encoder mounting seat 418 and a third angle encoder 417 are fixedly mounted below the second mounting housing 413. The third angle encoder 417 is mounted to the second mounting housing 413 via the third encoder mounting seat 418 and is sleeved with the second pull rod 416. This is used to indirectly measure the rotation angle of the differential shaft and calculate the 360-degree variation curve of the tooth backlash and the gear transmission error using a calculation formula.

[0108] This application also provides a gear shaft meshing detection method, referring to Figure 9 , the method comprising:

[0109] S901, placing the gear shaft system in the gear shaft system engagement detection device so that the first clamping assembly clamps the intermediate shaft, the second clamping assembly clamps the input shaft, and the third clamping assembly clamps the differential shaft;

[0110] S902: Control the first drive assembly to drive the input shaft detection mechanism according to a preset first center distance value, so that the input shaft approaches the intermediate shaft to engage the first pair of gears, and the first displacement detection assembly detects the actual center distance between the input shaft and the intermediate shaft in real time;

[0111] S903: Controlling the second drive assembly to drive the differential shaft detection mechanism according to the preset second center distance value to bring the differential shaft closer to the intermediate shaft so that the second pair of gears engages, and the second displacement detection assembly to detect the actual center distance between the differential shaft and the intermediate shaft in real time;

[0112] S904. When the actual center distance between the input shaft and the intermediate shaft detected by the first displacement detection component is the same as the preset first center distance value, the first drive component is controlled to stop moving; when the actual center distance between the differential shaft and the intermediate shaft detected by the second displacement detection component is the same as the preset second center distance value, the second drive component is controlled to stop moving.

[0113] In some embodiments, reference Figure 10 , the gear shaft engagement detection method also includes:

[0114] S1001: The third drive assembly drives the first clamping portion to rotate the intermediate shaft, which in turn drives the input shaft and the differential shaft to rotate through meshing transmission of the gears in the gear shaft system;

[0115] S1002, the first angle encoder, the second angle encoder, and the third angle encoder respectively record the rotation angles of the intermediate shaft, the input shaft, and the differential shaft;

[0116] S1003. Calculate a 360-degree variation curve of the tooth side clearance of the intermediate shaft, input shaft, differential shaft, and full gear shaft system and the gear transmission error based on preset rules.

[0117] In order to make the solution provided in the embodiment of the present application easier to understand, the working process of the gear shaft engagement detection device is described in detail below through a specific embodiment. The process includes the following steps:

[0118] (1) The gear shaft meshing detection device is ready: the detection device is powered on; the detection device is started; the detection device mode is selected; it is determined whether the detection device is in the initial position; the detection device is started in a cycle;

[0119] (2) Manually place the gear shaft system on the positioning fixture;

[0120] (3) The second drive unit (0.2 MPa) of the input shaft detection mechanism drives the third clamping unit to descend, and the third drive unit (0.2 MPa) of the differential shaft detection mechanism drives the fifth clamping unit to descend; the first drive unit of the tension loading mechanism drives the first clamping unit to descend;

[0121] (4) The tensioning drive of the tensioning loading mechanism retracts, and the tensioning sleeve tightens the intermediate shaft;

[0122] (5) The third drive assembly rotates at a low speed of 15 r / min (adjustable) to drive the intermediate shaft to rotate so that the gear shaft can be smoothly introduced;

[0123] (6) The first drive assembly is controlled to drive the input shaft detection mechanism to move horizontally according to the preset first center distance value, and the second drive assembly is controlled to drive the differential shaft detection mechanism to move horizontally according to the preset second center distance value. When the actual center distance between the input shaft and the intermediate shaft detected by the first displacement detection assembly is the same as the preset first center distance value, the first drive assembly is controlled to stop moving; when the actual center distance between the differential shaft and the intermediate shaft detected by the second displacement detection assembly is the same as the preset second center distance value, the second drive assembly is controlled to stop moving.

[0124] (7) the first guide rail clamp of the input shaft detection mechanism clamps the first linear rail segment, while the second guide rail clamp of the differential shaft detection mechanism clamps the second linear rail segment;

[0125] (8) The second drive unit (0.5 MPa) of the input shaft detection mechanism drives the third clamping unit to descend, compresses the fourth clamping unit, and then locks the second drive unit. At the same time, the third drive unit (0.5 MPa) of the differential shaft detection mechanism drives the fifth clamping unit to descend, compresses the sixth clamping unit, and then locks the third drive unit.

[0126] (9) The third drive assembly drives the intermediate shaft to rotate, which in turn drives the input shaft and differential shaft to rotate through gear meshing. The running-in time is 10 seconds and the speed is 30 r / min (adjustable).

[0127] (10) The first angle encoder, the second angle encoder, and the third angle encoder respectively record the rotation angles of the intermediate shaft, the input shaft, and the differential shaft;

[0128] (11) The system starts automatic calculation: Based on the preset rules (calculation formula), the 360-degree variation curve of the tooth side clearance of the intermediate shaft, input shaft, differential shaft and full gear shaft system and the gear transmission error are calculated;

[0129] (12) After the detection is completed, the third driving assembly stops rotating.

[0130] (13) Air pressure switching of the second drive unit of the input shaft detection mechanism (switching from 0.5 MPa to 0.2 MPa), and air pressure switching of the third drive unit of the differential shaft detection mechanism (switching from 0.5 MPa to 0.2 MPa);

[0131] (14) The first guide rail clamp of the input shaft detection mechanism is released, and at the same time, the second guide rail clamp of the differential shaft detection mechanism is released;

[0132] (15) The first drive assembly and the second drive assembly drive the input shaft detection mechanism and the differential shaft detection mechanism to move outward;

[0133] (16) The tensioning drive of the tensioning loading mechanism extends to release the intermediate shaft;

[0134] (17) The first driving part of the tensioning loading mechanism drives the first clamping part to rise, and the first driving part is locked after it is in place. The second driving part of the input shaft detection mechanism drives the third clamping part to rise, and the second driving part is locked after it is in place. The third driving part of the differential shaft detection mechanism drives the fifth clamping part to rise, and the third driving part is locked after it is in place.

[0135] (18) Manually remove the gear shaft system and complete the inspection.

[0136] The gear shaft meshing detection device of the embodiment of the present application can perform the displacement and measurement of the gear shaft center distance, the gear shaft meshing clearance measurement, the full gear shaft meshing clearance measurement and the gear transmission error measurement through the first angle encoder 222 of the tensioning loading mechanism 200, the second angle encoder 317 of the input shaft detection mechanism 300, the third angle encoder 417 of the differential shaft detection mechanism 400 and the first displacement detection component and the second displacement detection component, with high accuracy. In addition, a series of defective products such as bumps, burrs, and processing tolerances of the product can be identified by analyzing the data results. A series of tests of the gear shaft meshing detection device of the embodiment of the present application are all automatically completed by the computer system. The computer system interface displays the test results and calculation data, saves all the test results and calculation data and transmits them to the host computer, and can establish a database to facilitate quality tracing in the future.

[0137] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A gear shaft engagement detection device, characterized in that: include: The machine body includes a column and a first linear guide rail and a second linear guide rail fixed to the column, wherein the first linear guide rail extends along a first direction and the second linear guide rail extends along a second direction; the second linear guide rail includes a first linear rail segment and a second linear rail segment, and the first linear rail segment and the second linear rail segment are respectively located on both sides of the first linear guide rail; a tensioning and loading mechanism slidably mounted on the first linear guide rail, comprising a first clamping assembly, the first clamping assembly comprising a first clamping portion, a second clamping portion, and a first driving portion, the first driving portion being in driving connection with the first clamping portion and / or the second clamping portion for driving the first clamping portion along the first linear guide rail toward or away from the second clamping portion to clamp or release the intermediate shaft of the gear shaft system; an input shaft detection mechanism slidably mounted on the first linear rail segment, comprising a second clamping assembly for clamping the input shaft of the gear shaft system along a first direction; a first drive assembly, in transmission connection with the input shaft detection mechanism, for driving the input shaft detection mechanism to slide along the first linear track segment, so as to drive the input shaft to approach the intermediate shaft and cause the first pair of gears on the gear shaft system to engage for transmission; a differential shaft detection mechanism slidably mounted on the second linear rail segment, comprising a third clamping assembly for clamping the differential shaft of the gear shaft system along a first direction; a second drive assembly, drivingly connected to the differential shaft detection mechanism, for driving the differential shaft detection mechanism to slide along the second linear track segment, thereby driving the differential shaft to approach the intermediate shaft and causing the second pair of gears on the gear shaft system to engage for transmission; A first displacement detection component is used to detect the actual center distance between the input shaft and the intermediate shaft in real time; The second displacement detection component is used to detect the actual center distance between the differential shaft and the intermediate shaft in real time.

2. The gear shaft engagement detection device according to claim 1, characterized in that: The first displacement detection assembly and / or the second displacement detection assembly includes a displacement sensor and a detection block cooperating with the displacement sensor; The displacement sensor is fixed to the input shaft detection mechanism and / or the differential shaft detection mechanism, and the detection block is fixed to the first bottom plate of the first linear guide rail; Alternatively, the displacement sensor is fixed to the first base plate of the first linear guide rail, and the detection block is fixed to the input shaft detection mechanism and / or the differential shaft detection mechanism.

3. The gear shaft engagement detection device according to claim 1, characterized in that: The tensioning and loading mechanism further includes a tensioning assembly; The tensioning assembly includes a tensioning drive, a tensioning rod and a cone block; One end of the tensioning rod is connected to the tensioning drive transmission, and the other end is fixed with the cone block; The tensioning rod is provided with a tensioning sleeve at one end close to the cone block; The tensioning drive drives the cone block to slide into the interior of the tensioning sleeve along a first direction through the tensioning pull rod and tightens the tensioning sleeve to form the first clamping portion.

4. The gear shaft engagement detection device according to claim 3, characterized in that: The size of the cone block gradually increases along the direction from the tensioning drive to the cone block.

5. The gear shaft engagement detection device according to claim 3, characterized in that: The tension loading mechanism further includes a third driving assembly; The third driving assembly is in transmission connection with the first clamping portion, and is used for driving the intermediate shaft to rotate when the first clamping assembly clamps the intermediate shaft.

6. The gear shaft engagement detection device according to claim 5, characterized in that: The tensioning and loading mechanism further includes a first angle encoder for measuring the rotation angle of the intermediate shaft.

7. The gear shaft engagement detection device according to claim 1, characterized in that: The input shaft detection mechanism further includes a third linear guide rail, wherein the third linear guide rail extends along the first direction; The second clamping assembly includes a third clamping part, a fourth clamping part and a second driving part. The second driving part is transmission-connected to the third clamping part and / or the fourth clamping part, and is used to drive the third clamping part along the third linear guide rail to approach or move away from the fourth clamping part to clamp or release the input shaft of the gear shaft system.

8. The gear shaft engagement detection device according to claim 5, characterized in that: The input shaft detection mechanism of the gear shaft system engagement detection device further includes a second angle encoder for measuring the rotation angle of the input shaft.

9. The gear shaft engagement detection device according to claim 1, characterized in that: The differential shaft detection mechanism further includes a fourth linear guide rail, wherein the fourth linear guide rail extends along the first direction; The third clamping assembly includes a fifth clamping part, a sixth clamping part and a third driving part. The third driving part is in transmission connection with the fifth clamping part and / or the sixth clamping part, and is used to drive the fifth clamping part along the fourth linear guide rail to approach or move away from the sixth clamping part to clamp or release the differential shaft of the gear shaft system.

10. The gear shaft engagement detection device according to claim 5, characterized in that: The differential shaft detection mechanism of the gear shaft system engagement detection device further includes a third angle encoder for measuring the rotation angle of the differential shaft.

11. A gear shaft meshing detection method, characterized in that: include: Placing the gear shaft system in the gear shaft system engagement detection device so that the first clamping assembly clamps the intermediate shaft, the second clamping assembly clamps the input shaft, and the third clamping assembly clamps the differential shaft; According to a preset first center distance value, the first drive assembly drives the input shaft detection mechanism to drive the input shaft close to the intermediate shaft so that the first pair of gears engages, and the first displacement detection assembly detects the actual center distance between the input shaft and the intermediate shaft in real time; According to the preset second center distance value, the second drive assembly drives the differential shaft detection mechanism to drive the differential shaft close to the intermediate shaft so that the second pair of gears engages, and the second displacement detection assembly detects the actual center distance between the differential shaft and the intermediate shaft in real time; When the actual center distance between the input shaft and the intermediate shaft detected by the first displacement detection component is the same as the preset first center distance value, the first drive component is controlled to stop moving; when the actual center distance between the differential shaft and the intermediate shaft detected by the second displacement detection component is the same as the preset second center distance value, the second drive component is controlled to stop moving.

12. The gear shaft engagement detection method according to claim 11, characterized in that: Also includes: The third drive assembly drives the first clamping portion to rotate the intermediate shaft, and the gear meshing transmission in the gear shaft system further drives the input shaft and the differential shaft to rotate; The first angle encoder, the second angle encoder and the third angle encoder respectively record the rotation angles of the intermediate shaft, the input shaft and the differential shaft; Based on preset rules, the 360-degree variation curve of the tooth side clearance of the intermediate shaft, input shaft, differential shaft and full gear shaft system and the gear transmission error are calculated.

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