An intelligent multi-station running-in no-load detection platform and its working method

Abstract

The present invention provides an intelligent multi-station running-in no-load detection platform and a working method thereof, the device includes a base, a support frame and a running-in detection mechanism, the running-in detection mechanism includes a loading mechanism, a driving mechanism, a bearing mechanism and an in-situ detection component, the number of the loading mechanism, the driving mechanism, the bearing mechanism and the in-situ detection component are more than two and equal; the loading mechanism includes a first servo motor, a first transmission belt is provided at the output end of the first servo motor, the loading mechanism also includes a first transmission wheel, a first transmission shaft, a first coupling, a first torque sensor, a second coupling, a connecting shaft and a spline head connected in sequence, and the first transmission wheel and the transmission belt are connected. The working method includes steps S1 to S5. The detection platform can be compatible with various models of steering gears, and can perform real-time detection of the applied load value and the torque value during no-load detection.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to an intelligent multi-station running-in no-load detection platform and a working method thereof. Background Art

[0002] The steering gear is one of the important parts in the automobile production process. During the production process of the steering gear, the steering gear needs to be tested for performance, and the running-in no-load test is an important part of the steering gear performance test. However, the existing running-in no-load detection device is difficult to be compatible with a variety of steering gears, and the parameters during the running-in process cannot be set. Summary of the invention

[0003] The first object of the present invention is to provide an intelligent multi-station running-in no-load detection platform that is compatible with a variety of steering gears.

[0004] The second object of the present invention is to provide a working method of the above-mentioned intelligent multi-station running-in no-load detection table.

[0005] In order to achieve the above-mentioned first purpose, the intelligent multi-station running-in no-load detection platform provided by the present invention includes a base, a support frame and a running-in detection mechanism, the support frame is fixed above the base, the running-in detection mechanism is located inside the support frame, and a bottom plate is arranged inside the support frame. The running-in detection mechanism includes a loading mechanism, a driving mechanism, a bearing mechanism and an in-situ detection component, the driving mechanism is located inside the base, a slide rail is arranged on the bottom plate, the loading mechanism can slide along the slide rail, the bearing mechanism and the in-situ detection component are arranged on the upper surface of the bottom plate, the number of the loading mechanism, the driving mechanism, the bearing mechanism and the in-situ detection component are more than two and equal, and the loading mechanism, the driving mechanism, the bearing mechanism and the in-situ detection component are all arranged one by one; the loading mechanism includes a first servo motor, and a first transmission belt is arranged at the output end of the first servo motor, and the loading mechanism also includes a first transmission wheel, a first transmission shaft, a first coupling, a first torque sensor, a second coupling, a connecting shaft and a spline head connected in sequence, and the first transmission wheel is connected to the transmission belt.

[0006] As can be seen from the above scheme, the loading mechanism, the driving mechanism, the bearing mechanism and the in-situ detection assembly constitute a running-in detection station. When the steering gear needs to be run-in, the steering gear is placed on the bearing mechanism, the worm of the steering gear is inserted into the spline head, and then the spline head drives the worm end to rotate to run-in the steering gear. The spline head is driven to rotate by the first servo motor through the transmission mechanism. By adjusting the speed of the first servo motor, the load applied to the worm end by the loading mechanism can be changed, so as to achieve the running-in of the steering gear under different load conditions. Since the test bench has more than two running-in detection stations, different loads are applied to different running-in detection stations, so that the test bench can run-in for different models of steering gears at the same time, thus achieving the purpose of being compatible with multiple steering gears. During the running-in process, the test personnel can also measure the real-time value of the torque at any time through the first torque sensor.

[0007] Preferably, there are two loading mechanisms, which are symmetrically arranged on the left and right sides of the upper surface of the bottom plate.

[0008] A further solution is that the number of the bearing mechanisms is two, and the two bearing mechanisms are symmetrically arranged on the left and right sides of the upper surface of the bottom plate.

[0009] A further solution is that the number of the driving mechanisms is two, and the two driving mechanisms are symmetrically arranged on the left and right sides of the lower surface of the bottom plate.

[0010] A further solution is that the number of the in-situ detection components is two, and the two in-situ detection components are symmetrically arranged at the left and right ends of the upper surface of the bottom plate.

[0011] A further solution is that the loading mechanism also includes a first protective cover and a second protective cover, the first conveyor belt is arranged inside the first protective cover, a cylinder is arranged inside the second protective cover, a connecting plate is arranged at the output end of the cylinder, and the connecting shaft is fixed on the connecting plate.

[0012] In the above scheme, during the running-in process of the steering gear, the loading mechanism slides along the slide rail to the specified position, and then the cylinder pushes the spline head forward, and the worm end of the steering gear is stuck in the spline head. Then the first servo motor is started, and the first servo motor drives the first transmission wheel to rotate through the first transmission belt, and the first transmission wheel drives the spline head to rotate through the transmission mechanism. The spline head drives the worm end of the steering gear to rotate, and at this time the loading mechanism starts to load and run-in the steering gear. When the loading and running-in process is completed, the cylinder drives the spline head to move backward, and at this time the spline head is disengaged from the worm end.

[0013] A further solution is that the driving mechanism includes a second servo motor and a third protective cover, a second transmission belt is arranged at the output end of the second servo motor, the second transmission belt is arranged inside the third protective cover, the driving mechanism also includes a second transmission wheel, a second transmission shaft, a third coupling, a second torque sensor, a fourth coupling, a third transmission shaft and an output shaft connected in sequence, the driving mechanism also includes a fourth protective cover and a bushing, the third coupling, the second torque sensor and the fourth coupling are arranged inside the fourth protective cover, and the bushing is wrapped around the outside of the third transmission shaft.

[0014] In the above solution, the second servo motor outputs power to the output shaft through various transmission mechanisms.

[0015] A further solution is that the bearing mechanism includes a mounting seat, a limiting seat, a supporting block and a fixing frame, the mounting seat is fixed on the base plate, the limiting seat and the supporting block are arranged on the upper surface of the mounting seat, the fixing frame is arranged on the limiting seat and the supporting block, a mounting hole is formed on the fixing frame, a driving member is arranged on the inner side of the mounting hole, a transmission shaft is arranged at the bottom of the fixing frame, and the transmission shaft is connected to the output shaft.

[0016] A further solution is that the bearing mechanism includes a mounting seat, a limiting seat, a supporting block and a fixing frame, the mounting seat is fixed on the base plate, the limiting seat and the supporting block are arranged on the upper surface of the mounting seat, the fixing frame is arranged on the limiting seat and the supporting block, a mounting hole is formed on the fixing frame, a driving member is arranged on the inner side of the mounting hole, a transmission shaft is arranged at the bottom of the fixing frame, and the transmission shaft is connected to the output shaft.

[0017] In the above scheme, after the loading and running-in process is completed, the loading mechanism is retracted. At this time, the second servo motor is started, and the second servo motor drives the output shaft to rotate. The output shaft drives the driving member to rotate through the transmission shaft, and the driving member drives the steering gear to rotate. Since the worm end of the steering gear has withdrawn from the loading mechanism, the driving mechanism starts to perform a no-load detection experiment on the steering gear. The inspector observes the specific value of the steering gear torque at this time through the second torque sensor, and then compares it with the preset value to determine whether the product meets the standard.

[0018] A further solution is that the in-situ detection component includes a column, a holding ring and a photoelectric sensor, one end of the column is fixed to the upper surface of the base plate, the holding ring is arranged on the outer wall of the column, and the photoelectric sensor is arranged on the holding ring.

[0019] In the above scheme, the photoelectric sensor is used to sense whether there is a workpiece to be inspected placed on the inspection station. If the photoelectric sensor senses that there is a workpiece to be inspected placed on the inspection station, the remaining mechanisms of the inspection equipment can operate normally; if the photoelectric sensor does not sense that there is a workpiece to be inspected placed on the inspection station, the remaining mechanisms of the inspection equipment will suspend operation.

[0020] In order to achieve the above-mentioned second purpose, the working method provided by the present invention comprises the following steps:

[0021] Step S1: placing the workpiece to be inspected on the carrying mechanism;

[0022] Step S2: inserting the worm end of the workpiece to be inspected into the loading mechanism;

[0023] Step S3: starting the loading mechanism, which drives the workpiece to be inspected to run-in;

[0024] Step S4: the loading mechanism returns;

[0025] Step S5: starting the driving mechanism, which drives the workpiece to be inspected to perform no-load inspection.

[0026] It can be seen from the above scheme that during the execution of step S2, the cylinder drives the spline head to move forward, and the worm end is stuck in the spline head. After executing step S3, the cylinder drives the spline head to move backward, and the worm end withdraws from the spline head. During the execution of step S5, the second servo motor is started, and the second servo motor drives the steering gear to rotate. At this time, the inspection personnel observe the specific value of the steering gear torque through the second torque sensor. Through the above steps, the inspection bench can complete the running-in and no-load detection of the steering gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of an embodiment of a detection platform of the present invention.

[0028] Figure 2 It is a structural diagram of an embodiment of a testing platform of the present invention with some components hidden.

[0029] Figure 3 It is an exploded view of the loading mechanism of the detection platform embodiment of the present invention.

[0030] Figure 4 It is an exploded view of the driving mechanism of the detection platform embodiment of the present invention.

[0031] Figure 5 It is a structural diagram of the first viewing angle of the supporting mechanism of the detection platform embodiment of the present invention.

[0032] Figure 6 It is a structural diagram of the supporting mechanism of the detection platform embodiment of the present invention from a second viewing angle.

[0033] Figure 7 It is a structural diagram of the in-situ detection component of the detection platform embodiment of the present invention.

[0034] Figure 8 It is a flow chart of an embodiment of the working method of the detection station of the present invention.

[0035] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0036] See also Figure 1 and Figure 2 , Figure 2 for Figure 1 The structural diagram of the base 1 and the support frame 2 is hidden. The test bench provided in this embodiment includes a base 1, a support frame 2 and a running-in detection mechanism, the support frame 2 is fixed above the base 1, the running-in detection mechanism is located inside the support frame 2, and a base plate 3 is arranged inside the support frame 2. The running-in detection mechanism includes a loading mechanism 4, a driving mechanism 5, a bearing mechanism 6 and an in-situ detection component 7. The driving mechanism 5 is located inside the base 1, and a slide rail 8 is arranged on the base plate 3, and the loading mechanism 4 can slide along the slide rail 8. The number of the loading mechanism 4, the driving mechanism 5, the bearing mechanism 6 and the in-situ detection component 7 is more than two and equal, and the loading mechanism 4, the driving mechanism 5, the bearing mechanism 6 and the in-situ detection component 7 are all arranged one by one. A numerical control display screen 10 is arranged on the right side of the support frame 2, and the detection personnel can check the torque value on the numerical control display screen 10 at any time. A pendant 11 is arranged on the left side of the support frame 2, and the inside of the pendant 11 can be used to place the operation instruction book. A walking wheel 12 is arranged at the bottom of the base 2.

[0037] In this embodiment, the number of the loading mechanism 4, the driving mechanism 5, the bearing mechanism 6 and the in-situ detection component 7 are all two. The two loading mechanisms 4 are symmetrically arranged on the left and right sides of the upper surface of the base plate 3. The two bearing mechanisms 6 are symmetrically arranged on the left and right sides of the upper surface of the base plate 3. The two driving mechanisms 5 are symmetrically arranged on the left and right sides of the lower surface of the base plate 3. The two in-situ detection components 7 are symmetrically arranged on the left and right ends of the upper surface of the base plate 3. It should be noted that one loading mechanism 4, one driving mechanism 5, one bearing mechanism 6 and one in-situ detection component 7 constitute an inspection station. Figure 1 and Figure 2 The number of the inspection stations is two, but the number of the inspection stations in the technical solution of the present invention includes but is not limited to two, and the number of the inspection stations can be three or more. The number of the inspection stations can be determined according to the actual needs in the production process.

[0038] See also Figure 3The loading mechanism 4 includes a first servo motor 41, a first protective cover 42, a second protective cover 43 and a base 414. A first transmission belt 44 is arranged at the output end of the first servo motor 41, and the first transmission belt 44 is arranged inside the first protective cover 42. The second protective cover is arranged on the top of the base 414. The loading mechanism 4 also includes a first transmission wheel 45, a first transmission shaft 46, a first coupling 47, a first torque sensor 48, a second coupling 49, a connecting shaft 410 and a spline head 411 connected in sequence. The first transmission wheel 45 and the transmission belt 44 are connected. A cylinder 412 is arranged inside the second protective cover 43. A connecting plate 413 is arranged at the output end of the cylinder 412, and the connecting shaft 410 is fixed on the connecting plate 413. The first transmission shaft 46, the first coupling 47, the first torque sensor 48, and the second coupling 49 are arranged inside the second protective cover 43 and the base 414. The cylinder 412 drives the spline head 411 to move forward and backward through the connecting plate 413.

[0039] In this embodiment, when the steering gear needs to be run-in, the steering gear is placed on the bearing mechanism 6, the loading mechanism 4 slides to the specified position along the slide rail 8, and then the cylinder 412 pushes the spline head 411 forward, and the worm end of the steering gear is stuck in the spline head 411. Then the spline head 411 drives the worm end to rotate, and the steering gear is run-in. The first servo motor 41 drives the spline head 411 to rotate through the transmission mechanism. By adjusting the speed of the first servo motor 41, the load applied by the loading mechanism to the worm end can be changed, so that the steering gear can be run-in under different load conditions. Since the test bench has more than two run-in detection stations, different loads are applied to different run-in detection stations, so that the test bench can run-in for different models of steering gears at the same time, so as to achieve the purpose of being compatible with multiple steering gears. During the run-in process, the first torque sensor 48 can detect the torque value of the loading mechanism 4 and display it through the numerical control display screen 10. The test personnel can observe the torque value of the loading mechanism 4 through the numerical control display screen 10 at any time and adjust it at any time.

[0040] See also Figure 4 The drive mechanism 5 includes a second servo motor 51 and a third protective cover 52. A second transmission belt 53 is provided at the output end of the second servo motor 51, and the second transmission belt 53 is provided inside the third protective cover 52. The drive mechanism 5 also includes a second transmission wheel 54, a second transmission shaft 55, a third coupling 56, a second torque sensor 57, a fourth coupling 58, a third transmission shaft 59 and an output shaft 510 connected in sequence. The drive mechanism 5 also includes a fourth protective cover 511 and a sleeve 512. The third coupling 56, the second torque sensor 57 and the fourth coupling 58 are provided inside the fourth protective cover 511, and the sleeve 512 is wrapped around the outside of the third transmission shaft 59.

[0041] See also Figure 5 and Figure 6 The bearing mechanism 6 includes a mounting seat 61, a limiting seat 62, a support block 63 and a fixing frame 64. The mounting seat 61 is fixed on the base plate 3. The limiting seat 62 and the support block 63 are arranged on the upper surface of the mounting seat 61. The fixing frame 64 is arranged on the limiting seat 62 and the support block 63. A mounting hole 65 is formed on the fixing frame 64. A driving member 66 is arranged on the inner side of the mounting hole 65. A transmission shaft 67 is arranged at the bottom of the fixing frame 64, and the transmission shaft 67 is connected to the output shaft 510.

[0042] See also Figure 2 , Figure 5 and Figure 6 , the test bench provided in this embodiment also includes a clamping assembly 9. The clamping assembly 9 includes a handle 91, a connecting rod 92 and a clamping head 93. A protrusion 68 is provided on the fixed frame 64. After the workpiece to be inspected is placed in the bearing mechanism 6, the handle 91 is rotated, and the handle 91 drives the clamping head 93 to move downward and press on the protrusion 68 to achieve the positioning effect. When the loading and running-in process is completed, the loading mechanism 4 is retracted. At this time, the second servo motor 51 is started, and the second servo motor 51 drives the output shaft 510 to rotate. The output shaft 510 drives the driving member 66 to rotate through the transmission shaft 67, and the driving member 66 drives the steering gear to rotate. Since the worm end of the steering gear has withdrawn from the loading mechanism 4. At this time, the driving mechanism 5 starts to perform an unloaded detection experiment on the steering gear. The inspector detects the specific value of the steering gear torque at this time through the second torque sensor 57, and then checks the torque value on the CNC display screen 10, and then compares it with the preset value, so as to determine whether the product meets the standard and whether it needs to be run-in again.

[0043] See also Figure 7 The in-situ detection component 7 includes a column 71, a ring 72 and a photoelectric sensor 73. One end of the column 71 is fixed to the upper surface of the bottom plate 3, the ring 72 is arranged on the outer wall of the column 71, and the photoelectric sensor 73 is arranged on the ring. The photoelectric sensor 73 is used to sense whether a workpiece to be inspected is placed on the detection station. If the photoelectric sensor 73 senses that a workpiece to be inspected is placed on the detection station, the work of the other mechanisms of the detection equipment can proceed normally; if the photoelectric sensor 73 does not sense that a workpiece to be inspected is placed on the detection station, the work of the other mechanisms of the detection equipment will be suspended. Since the working principle of the photoelectric sensor is common knowledge, it will not be described in detail here.

[0044] See also Figure 8The working method provided by the present invention comprises the following steps: first, execute step S1 to place the workpiece to be inspected on the carrying mechanism 6. Then, execute step S2 to insert the worm end of the workpiece to be inspected into the loading mechanism 4. Then, execute step S3 to start the loading mechanism 4, and the loading mechanism 4 drives the workpiece to be inspected to run-in. Then, execute step S4 to retract the loading mechanism 4. Finally, execute step S5 to start the driving mechanism 5, and the driving mechanism 5 drives the workpiece to be inspected to perform no-load detection.

[0045] When executing step S2, the loading mechanism 4 moves to the specified position along the slide rail 8, and then the cylinder 412 pushes the spline head 411 forward so that the worm end is stuck in the spline head 411. When executing step S3, the first servo motor 41 is started, and the first servo motor 41 drives the spline head 411 to rotate, and the steering gear is run-in. When executing step S4, the cylinder 412 drives the spline head 411 to move backward, and the worm end is withdrawn from the spline head 411. When executing step S5, the second servo motor 51 is started, and the second servo motor 51 drives the steering gear to rotate, and the specific value of the steering gear torque at this time is detected by the second torque sensor 57, and then displayed on the CNC display screen 10. Through the above steps, the test bench can complete the running-in and no-load detection of the steering gear.

[0046] Although the present invention has been shown and described in conjunction with the present embodiment and the preferred embodiment, it should be understood by those skilled in the art that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. An intelligent multi-station running-in no-load detection table, comprising a base, a support frame and a running-in detection mechanism, wherein the support frame is fixed above the base, the running-in detection mechanism is located inside the support frame, a bottom plate is arranged inside the support frame, the running-in detection mechanism comprises a loading mechanism, a driving mechanism, a bearing mechanism and an in-situ detection component, the driving mechanism is located inside the base, a slide rail is arranged on the bottom plate, the loading mechanism can slide along the slide rail, the bearing mechanism and the in-situ detection component are arranged on the upper surface of the bottom plate, characterized in that: The number of the loading mechanism, the driving mechanism, the bearing mechanism and the in-situ detection assembly is more than two and equal, and the loading mechanism, the driving mechanism, the bearing mechanism and the in-situ detection assembly are arranged one by one; The loading mechanism includes a first servo motor, and a first transmission belt is arranged at the output end of the first servo motor. The loading mechanism also includes a first transmission wheel, a first transmission shaft, a first coupling, a first torque sensor, a second coupling, a connecting shaft and a spline head which are connected in sequence, and the first transmission wheel and the transmission belt are connected.

2. The testing platform according to claim 1, characterized in that: There are two loading mechanisms, and the two loading mechanisms are symmetrically arranged on the left and right sides of the upper surface of the bottom plate.

3. The testing platform according to claim 1, characterized in that: The number of the bearing mechanisms is two, and the two bearing mechanisms are symmetrically arranged on the left and right sides of the upper surface of the bottom plate.

4. The testing platform according to claim 1, characterized in that: The number of the driving mechanisms is two, and the two driving mechanisms are symmetrically arranged on the left and right sides of the lower surface of the bottom plate.

5. The testing platform according to claim 1, characterized in that: The number of the in-situ detection components is two, and the two in-situ detection components are symmetrically arranged at the left and right ends of the upper surface of the bottom plate.

6. The testing station according to any one of claims 1 to 5, characterized in that: The loading mechanism also includes a first protective cover and a second protective cover. The first conveyor belt is arranged inside the first protective cover. A cylinder is arranged inside the second protective cover. A connecting plate is arranged at the output end of the cylinder. The connecting shaft is fixed on the connecting plate.

7. The testing station according to claim 6, characterized in that: The driving mechanism includes a second servo motor and a third protective cover, a second transmission belt is arranged at the output end of the second servo motor, and the second transmission belt is arranged inside the third protective cover. The driving mechanism also includes a second transmission wheel, a second transmission shaft, a third coupling, a second torque sensor, a fourth coupling, a third transmission shaft and an output shaft connected in sequence, and the driving mechanism also includes a fourth protective cover and a bushing, the third coupling, the second torque sensor and the fourth coupling are arranged inside the fourth protective cover, and the bushing is wrapped around the outside of the third transmission shaft.

8. The testing station according to claim 7, characterized in that: The bearing mechanism includes a mounting seat, a limiting seat, a support block and a fixing frame, the mounting seat is fixed on the base plate, the limiting seat and the support block are arranged on the upper surface of the mounting seat, the fixing frame is arranged on the limiting seat and the support block, a mounting hole is formed on the fixing frame, a driving member is arranged on the inner side of the mounting hole, a transmission shaft is arranged at the bottom of the fixing frame, and the transmission shaft is connected to the output shaft.

9. The testing station according to claim 8, characterized in that: The in-situ detection component includes a column, a holding ring and a photoelectric sensor, one end of the column is fixed to the upper surface of the base plate, the holding ring is arranged on the outer wall of the column, and the photoelectric sensor is arranged on the holding ring.

10. A working method of an intelligent multi-station running-in no-load detection platform, using the intelligent multi-station running-in no-load detection platform as claimed in claim 1, characterized in that: The working method comprises the following steps: placing the workpiece to be inspected on the carrying mechanism; Clamping the worm end of the workpiece to be inspected into the loading mechanism; Starting the loading mechanism, which drives the workpiece to be inspected to perform running-in; The loading mechanism is retracted; The driving mechanism is started, and the driving mechanism drives the workpiece to be inspected to perform no-load inspection.

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