CN211825052U - Final function and NVH tester for electric power steering gear - Google Patents
Final function and NVH tester for electric power steering gear Download PDFInfo
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- CN211825052U CN211825052U CN202020440848.7U CN202020440848U CN211825052U CN 211825052 U CN211825052 U CN 211825052U CN 202020440848 U CN202020440848 U CN 202020440848U CN 211825052 U CN211825052 U CN 211825052U
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Abstract
The utility model provides a final function and NVH testing device of an electric power steering gear, which comprises a control unit, a frame, a positioning mechanism, an input shaft driving mechanism, an output shaft loading mechanism and an NVH detecting mechanism; the NVH detection mechanism comprises a guide rail, a sliding block, an NVH fixing seat, a rotating seat, a detection head and a horizontal pushing driving mechanism, wherein the guide rail is arranged on the positioning mechanism; the slide block is arranged on the guide rail; the NVH fixing seat is arranged on the sliding block and moves along with the sliding block; the rotating seat comprises a first guide rod, a second guide rod, a first connecting seat and a second connecting seat, the first guide rod is arranged on the NVH fixing seat, the first connecting seat is arranged on the first guide rod and can rotate around the first guide rod, the second guide rod is arranged on the first connecting seat, and the second connecting seat is arranged on the second guide rod and can rotate around the second guide rod; the detection head and the horizontal pushing driving mechanism are both arranged on the second connecting seat, and the horizontal pushing driving mechanism drives the detection head to move towards the direction of the positioning mechanism. The utility model discloses can compatible multiple different specifications's product.
Description
Technical Field
The utility model relates to a performance detection equipment field specifically is a relate to a final function of electric power steering and NVH testing arrangement.
Background
The electric power steering gear directly provides steering power by the electric power-assisted machine, compared with a hydraulic power steering gear, the electric power steering gear not only can save energy, but also can protect the environment, and the electric power steering gear becomes the development direction of an automobile steering system.
After the electric power steering gear is produced, performance tests such as a force characteristic test, a sensor characteristic test, a current characteristic test, a reverse no-load test, a function test, a noise test and the like need to be carried out. The existing detection device has the following defects: 1. a positioning mechanism is arranged for a product, and the product is not compatible with products of different specifications; 2. the single positioning device and the clamping device are arranged to realize the positioning of the electric power steering gear, and for the electric power steering gear with longer length, the single positioning device is not enough to ensure the positioning accuracy of the two ends of the electric power steering gear, so that the accuracy of a test result is influenced; 3. the noise testing mechanism can only move linearly along a single direction and cannot be compatible with products of different specifications for noise testing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a compatible good electric power steering final function and NVH testing arrangement.
In order to achieve the above object, the utility model provides an electric power steering final function and NVH testing arrangement, including the control unit, a machine support, positioning mechanism, input shaft drive mechanism, output shaft loading mechanism, and NVH detection mechanism, the control unit respectively with positioning mechanism, input shaft drive mechanism and output shaft loading mechanism electricity are connected, input shaft drive mechanism, positioning mechanism and output shaft loading mechanism set gradually in the frame from top to bottom, NVH detection mechanism includes the guide rail, the slider, the NVH fixing base, the roating seat, detection head and horizontal push drive mechanism, the guide rail sets up on positioning mechanism along the horizontal direction; the sliding block is arranged on the guide rail and can move along the extending direction of the guide rail; the NVH fixing seat is arranged on the sliding block and moves along with the sliding block; the rotary seat is arranged on the NVH fixing seat and comprises a first guide rod, a second guide rod, a first connecting seat and a second connecting seat, the first guide rod is arranged on the NVH fixing seat, the first connecting seat is arranged on the first guide rod and can rotate around the first guide rod, the second guide rod is arranged on the first connecting seat, the second guide rod is perpendicular to the first guide rod, and the second connecting seat is arranged on the second guide rod and can rotate around the second guide rod; the detection head and the horizontal pushing driving mechanism are both arranged on the second connecting seat, and the horizontal pushing driving mechanism drives the detection head to move towards the direction of the positioning mechanism.
According to the scheme, the NVH detection mechanism is arranged for carrying out an NVH test on the product; the first connecting seat is arranged to rotate around the first guide rod, so that the detection head can rotate on a vertical surface, the second connecting seat is arranged to rotate around the second guide rod, the detection head can rotate on a horizontal plane, the detection head can correspond to any point in a three-dimensional space, and products with different specifications are compatible.
The NVH fixing seat is further provided with two locking mechanisms which are positioned on two sides of the sliding block; the locking mechanism comprises a clamping mounting seat, a first clamping sleeve and a second clamping sleeve, a through hole and a clamping mounting groove are formed in the clamping mounting seat, and the clamping mounting groove is located in the middle of the clamping mounting seat and is communicated with the through hole; the first clamping sleeve and the second clamping sleeve are respectively located at two ends of the through hole and can move relatively close to each other, the first clamping sleeve and the second clamping sleeve respectively protrude out of two inner sides of the clamping installation groove, a clamping opening is formed between the first clamping sleeve and the second clamping sleeve, and the guide rail is located in the clamping opening.
According to the scheme, the guide rail is located in the clamping installation groove by arranging the clamping installation groove, and the first clamping sleeve and the second clamping sleeve are arranged to move relatively close to each other and are used for clamping the upper side and the lower side of the guide rail, so that the NVH fixing seat is conveniently fixed on the guide rail.
The locking mechanism further comprises an adjusting rod, a first elastic piece, a second elastic piece and a locking handle assembly, wherein the adjusting rod penetrates through the through hole and is inserted into the first clamping sleeve and the second clamping sleeve, the locking handle assembly is arranged at the end part of the adjusting rod and is abutted to the first clamping sleeve, and the locking handle assembly can push the first clamping sleeve to move along the axial direction of the adjusting rod; the through hole is provided with a first stop groove and a second stop groove, the first elastic piece is arranged in the first stop groove and elastically abuts between the groove bottom of the first stop groove and the first clamping sleeve, and the second elastic piece is arranged in the second stop groove and elastically abuts between the groove bottom of the second stop groove and the second clamping sleeve.
According to the scheme, the first clamping sleeve is pushed to move towards the second clamping sleeve by rotating the locking handle assembly, so that the clamping opening executes clamping action, and the operation is simple and convenient.
The positioning mechanism comprises a positioning fixing seat, the NVH detection mechanism is positioned above the positioning fixing seat, a first fixed positioning tool and a second fixed positioning tool are arranged on the positioning fixing seat, and the second fixed positioning tool is positioned on one side of the first fixed positioning tool; the number of the NVH detection mechanisms is two, and the detection heads of the two NVH detection mechanisms face the first fixed positioning tool and the second fixed positioning tool respectively.
The further scheme is that the input shaft driving mechanism is movably arranged above the positioning mechanism along the vertical direction, the input shaft driving mechanism comprises a first driving assembly, a first transmission shaft assembly and a driving connection assembly, the first driving assembly drives the first transmission shaft assembly to rotate around the self axial direction, a first torque sensor and an encoder are arranged in the middle of the first transmission shaft assembly, and the driving connection assembly is arranged at the end part of the first transmission shaft assembly.
The driving connection assembly comprises a first connection sleeve, a sliding rod, a first connection head and a first spring, the sliding rod is inserted into the first connection sleeve, the first spring is elastically abutted between the first connection sleeve and the first end of the sliding rod, and the first connection head is detachably connected with the second end of the sliding rod.
According to the scheme, the first spring is arranged, so that when the first connecting head is connected with the input shaft of the product, the first spring is compressed to achieve a buffering effect.
The output shaft loading mechanism is movably arranged below the positioning mechanism along the vertical direction, the output shaft loading mechanism comprises a second driving assembly, a second transmission shaft assembly and a loading connecting assembly, the second driving assembly drives the second transmission shaft assembly to rotate around the axis of the second driving assembly, a second torque sensor is arranged in the middle of the second transmission shaft assembly, and the loading connecting assembly is arranged at the end of the second transmission shaft assembly.
The loading connection assembly comprises a second connection sleeve, a third connection sleeve, a second spring, a third spring and a second connector, wherein two ends of the second connection sleeve are respectively connected with the second transmission shaft assembly and the second connector, and the second spring is arranged in the second connection sleeve and elastically abutted between the second transmission shaft assembly and the second connector; the third connecting sleeve is sleeved on the second connecting sleeve, a ball is arranged between the second connecting sleeve and the second connector, the ball is located in the third connecting sleeve, a stopping portion is arranged on the side wall of the second connecting sleeve along the annular direction, and the third spring is arranged in the third connecting sleeve and elastically abuts against the stopping portion and the third connecting sleeve.
According to the scheme, the second spring is arranged, so that the second connector plays a role in buffering when being connected with the output shaft of a product; the balls are arranged, so that the second connector and the second connecting sleeve can be conveniently and quickly disassembled; through setting up the third spring, make things convenient for the installation and the dismantlement of ball.
Drawings
Fig. 1 is a structural diagram of a product to which the embodiment of the present invention is applied for detection.
Fig. 2 is a structural diagram of an embodiment of the present invention.
Fig. 3 is a structural diagram of a positioning mechanism and a product according to an embodiment of the present invention.
Fig. 4 is a structural diagram of a positioning mechanism according to an embodiment of the present invention.
Fig. 5 is a structural diagram of a movable tooling assembly according to an embodiment of the present invention.
Fig. 6 is a structural diagram of the NVH detection mechanism according to the embodiment of the present invention.
Fig. 7 is a structural diagram of the NVH fixing base according to the embodiment of the present invention.
Fig. 8 is a cross-sectional view of an NVH fixing base according to an embodiment of the present invention.
Fig. 9 is a structural view of an input shaft drive mechanism according to an embodiment of the present invention.
Fig. 10 is a cross-sectional view of a drive connection assembly in accordance with an embodiment of the present invention.
Fig. 11 is a structural diagram of an output shaft loading mechanism according to an embodiment of the present invention.
Fig. 12 is a cross-sectional view of a loading connection assembly according to an embodiment of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1, the product 1 applying the embodiment to perform the final function and the NVH detection includes an input shaft 11, an upper bracket 12, an output shaft 13, an electric booster 14 and a housing, a connecting portion 15 is disposed on the housing, both ends of the input shaft 11 and the output shaft 13 are spline shafts, positioning holes 121 are disposed on left and right sides of the upper bracket 12, the positioning holes 121 are elliptical holes, and long sides of the elliptical holes are in a vertical direction. The connecting portion 15 includes a horizontal shaft 151 and two connecting arms 152, the two connecting arms 152 are disposed in parallel and spaced apart by a predetermined distance, and both ends of the horizontal shaft 151 are connected to the connecting arms 152, respectively.
Referring to fig. 2, the final function and NVH testing apparatus of the electric power steering apparatus of the present embodiment includes a control unit, a frame 2, a positioning mechanism 3, an input shaft driving mechanism 4, and an output shaft loading mechanism 5. The control unit is electrically connected with the positioning mechanism 3, the input shaft driving mechanism 4 and the output shaft loading mechanism 5 respectively. The frame 2 is formed by welding sectional materials, a working platform 21 is arranged in the frame 2, and an avoiding hole 22 is formed in the middle of the working platform 21. The input shaft driving mechanism 4, the positioning mechanism 3 and the output shaft loading mechanism 5 are sequentially arranged on the rack 2 from top to bottom, and the positioning mechanism 3 is positioned above the avoidance hole 22.
Referring to fig. 3 to 5, the positioning mechanism 3 includes a positioning mounting plate 31, a positioning driving assembly 32, a positioning moving seat 33, a movable tooling assembly and a fixed tooling assembly. The location mounting panel 31 sets up on frame 2 along vertical direction, and the setting of location removal seat 33 is on location mounting panel 31, and the setting of activity frock subassembly is on location removal seat 33, and fixed frock subassembly sets up on location mounting panel 31 and is located the below of activity frock subassembly. The positioning driving assembly 32 is a servo motor, the positioning driving assembly 32 drives the positioning moving seat 33 and the movable tool assembly to move together along the vertical direction through the lead screw transmission mechanism, and the distance between the movable tool assembly and the fixed tool assembly is controlled to be compatible with products 1 of different specifications.
The movable tool assembly comprises a first movable positioning tool 34, a second movable positioning tool 35 and two clamping assemblies 36, the first movable positioning tool 34 is arranged on the positioning moving seat 33 along the vertical direction, the second movable positioning tool 35 is arranged below the first movable positioning tool 34 along the horizontal direction, and the two clamping assemblies 36 are respectively arranged on two sides of the first movable positioning tool 34.
The first movable positioning tool 34 includes two cushion blocks 341, two guide stoppers 342, and two positioning pins 343, the two guide stoppers 342 are disposed in parallel, and the cushion block 341 is located between the two guide stoppers 342 and close to the guide stoppers 342. The guide stoppers 342 are provided with guide surfaces inclined from the ends of the guide stoppers 342 toward the pad 341, so that the product 1 can be guided to move between the two guide stoppers 342 when the product 1 is mounted. A positioning pin 343 is provided on the cushion block 341, the positioning pin 343 and the guide stopper 342 are provided in parallel, and the positioning pin 343 is used for clearance-fitting with the positioning hole 121 of the product 1.
The clamping assembly 36 comprises an air cylinder 361, a piston rod 362, a toggle block 363 and a pressing piece 364, the air cylinder 361 is arranged on the positioning moving seat 33, two ends of the toggle block 363 are respectively connected with the piston rod 362 and the pressing piece 364, the pressing piece 364 is arranged in parallel with the piston rod 362, and the air cylinder 361 drives the toggle block 363 and the pressing piece 364 to move towards the direction of the cushion block 341 through the piston rod 362, so that a clamping opening for clamping the product 1 is formed between the pressing piece 364 and the cushion block 341.
The second movable positioning tool 35 is provided with a damping plate 351, a first mounting groove 352 and two positioning protrusions 353, the positioning protrusions 353 are arranged on the side walls of the two sides of the notch of the first mounting groove 352, and the two positioning protrusions 353 are symmetrically arranged with the center line of the first mounting groove 352. The damping plate 351 is made of rubber materials, a second mounting groove is formed in the damping plate 351, the groove width of the second mounting groove is equal to that of the first mounting groove 352, and the second mounting groove and the first mounting groove 352 are correspondingly arranged up and down and are communicated with each other.
The fixed tool assembly comprises a positioning fixing seat 37, a first fixed positioning tool 38 and a second fixed positioning tool 39, and handles are arranged on the left side and the right side of the positioning fixing seat 37. First fixed position frock 38 detachably sets up the middle part front end at location fixing base 37, through the first fixed position frock 38 of changing different specifications with the product 1 of compatible different specifications. The first fixing and positioning tool 38 is provided with a third mounting groove 381 and a positioning block 382, the positioning block 382 is located in the middle of the third mounting groove 381, and the positioning block 382 is embedded between two connecting arms 152 of the product 1 to realize the positioning of the product 1. The positioning block 382 is provided with a fourth mounting groove 383 for connecting with a transverse pin of the product 1.
Second fixed position frock 39 detachably sets up the one side at first fixed position frock 38, be equipped with two vertical pins on the location fixing base 37, the first end of second fixed position frock 39 is equipped with two arc walls 391, two arc walls 391 are located the circumference of same circle, vertical pin cartridge can slide along the cell wall of arc wall 391 in arc wall 391, it is rotatory to realize that second fixed position frock 39 can wind the centre of a circle of two arc walls 391 places circles, conveniently adjust the angle of second fixed position frock 39, product 1 of compatible difference is come through adjusting second fixed position frock 39 angle on the horizontal direction. The second end of the second fixing and positioning tool 39 is provided with a fifth mounting groove 392 for connecting with the electric power-assisted machine 14 of the product 1.
The positioning mechanism 3 is also provided with an in-place detection assembly and a limit detection assembly, and the in-place detection assembly and the limit detection assembly are both connected with the control unit. The in-place detection assembly comprises an in-place mounting frame 301 and an in-place detector 302, wherein the in-place mounting frame 301 is arranged on the positioning moving seat 33 and is positioned on one side of the first movable positioning tool 34. The in-place detector 302 is disposed on the in-place mounting block 301 and emits detection light toward the first movable positioning tool 34. The in-position detector 302 may be a photosensor. The limit detection assembly comprises a position detection plate 310 and at least two limit position detectors 320, wherein the two limit position detectors 320 are arranged on the positioning mounting plate 31 in a vertical direction, the position detection plate 310 is arranged on the positioning moving seat 33, and the position detection plate 310 moves back and forth between the two limit position detectors 320. The extreme position detector 320 may be a proximity switch.
Referring to fig. 6 to 8 and combining fig. 4, the NVH detection mechanism 6 includes a guide rail 61, two sliders 62, two NVH fixing seats 63, two rotating seats, two detection heads 64 and two horizontal pushing driving mechanisms 65, the detection heads 64 are provided with a shock absorption block and a vibration sensor, the vibration sensor is located on the shock absorption block, the vibration sensor is connected with the control unit, and the shock absorption block is used for avoiding interference of external factors to the vibration sensor. The guide rail 61 is arranged above the positioning fixing seat along the horizontal direction, and the two sliding blocks 62 are arranged on the guide rail 61 and can move along the extending direction of the guide rail 61. NVH fixing seat 63 is arranged on the sliding block 62 and moves along with the sliding block 62, and the rotating seat is arranged on the NVH fixing seat 63. The rotary base includes a first guide bar 66, a second guide bar 67, a first coupling base 68, and a second coupling base 69. The first guide rod 66 is vertically disposed on the NVH fixing base 63 in the front-rear direction, and the first connection base 68 is disposed on the first guide rod 66 and is rotatable about the first guide rod 66. The second guide bar 67 is disposed on the first guide bar 68, the second guide bar 67 is perpendicular to the first guide bar 66, and the second connection base 69 is disposed on the second guide bar 67 and can rotate around the second guide bar 67. The detection head 64 and the horizontal pushing driving mechanism 65 are both arranged on the second connecting seat 69, the horizontal pushing driving mechanism 65 is preferably an air cylinder, and the horizontal pushing driving mechanism 65 drives the detection head 64 to move towards the first fixing and positioning tool and the second fixing and positioning tool respectively, so that the detection head 64 is in direct contact with the electric booster 14 and the shell of the product 1 respectively, and NVH testing is facilitated.
Two locking mechanisms 7 are further arranged on the NVH fixing seat 63, and the two locking mechanisms 7 are located on two sides of the sliding block 62. The locking mechanism 7 includes a clamp mount 71, a first clamp sleeve 72, a second clamp sleeve 73, an adjustment rod 74, a first resilient member 75, a second resilient member 76, and a locking handle assembly 77. The clamp mounting seat 71 is provided with a through hole 711 and a clamp mounting groove 712, and the through hole 711 is provided in a vertical direction. Two ends of the through hole 711 are respectively provided with a first clamping sleeve mounting groove 713 and a second clamping sleeve mounting groove 714, the through hole 711 is provided with a first stopping groove 715 and a second stopping groove 716, the first clamping sleeve mounting groove 713 is communicated with the first stopping groove 715, and the second clamping sleeve mounting groove 714 is communicated with the second stopping groove 716. The clamping mounting groove 712 is located in the middle of the clamping mounting seat and is respectively communicated with the first clamping sleeve mounting groove 713 and the second clamping sleeve mounting groove 714. The first clamping sleeve 72 is positioned in the first clamping sleeve mounting groove 713 and partially protrudes into the clamping mounting groove 712, and the second clamping sleeve 73 is positioned in the second clamping sleeve mounting groove 714 and partially protrudes into the clamping mounting groove 712, so that a clamping opening is formed between the first clamping sleeve 72 and the second clamping sleeve 73, and the guide rail 61 is positioned in the clamping opening.
The first resilient member 75 is disposed in the first stopper groove 715 and resiliently abuts between the groove bottom of the first stopper groove 715 and the first clamping collar 72, and the second resilient member 76 is disposed in the second stopper groove 716 and resiliently abuts between the groove bottom of the second stopper groove 716 and the second clamping collar 73. The adjusting rod 74 sequentially passes through the second clamping sleeve 73, the second elastic member 76, the through hole 711, the first elastic member 75 and the first clamping sleeve 72 from bottom to top, and the upper end of the adjusting rod 74 protrudes out of the first clamping sleeve 72. A handle assembly is provided on the upper end of the adjuster rod 74, the handle assembly abutting the first clamping sleeve 72. When the locking handle assembly 77 is manually rotated, the locking handle assembly 77 pushes the first clamping sleeve 72 to move downwards along the axial direction of the adjusting rod 74, so that the clamping opening performs a clamping action, and the NVH fixing seat 63 is fixed on the preset position of the guide rail 61.
Referring to fig. 9 and 10, the input shaft driving mechanism 4 is disposed above the positioning mechanism 3 so as to be movable in the vertical direction, the input shaft driving mechanism 4 includes a first driving assembly 41, a first transmission shaft assembly 42, and a driving connection assembly 43, and the first driving assembly 41 drives the first transmission shaft assembly 42 to rotate axially about itself. The middle part of the first transmission shaft assembly 42 is provided with a first torque sensor 44 and an encoder 45, and both the first torque sensor 44 and the encoder 45 are connected with the control unit. The end of the first driveshaft assembly 42 is connected to the drive connection assembly 43.
The driving connection assembly 43 includes a first connection sleeve 431, a sliding rod 432, a first connection head 433 and a first spring 434, a first end of the first connection sleeve 431 is connected with the first transmission shaft assembly 42, a second end of the first connection sleeve 431 is provided with a fifth installation groove 392, the sliding rod 432 is inserted in the fifth installation groove 392, the first spring 434 is located in the fifth installation groove 392 and elastically abuts between the first ends of the first connection sleeve 431 and the sliding rod 432, and a second end of the sliding rod 432 is connected with the first connection head 433, so that the first connection heads 433 of different specifications can be conveniently replaced. The first connecting sleeve 431 is provided with a sliding hole 4311, and the sliding hole 4311 extends in the axial direction of the first connecting sleeve 431. The first connecting sleeve 431 is provided with a connecting piece, the connecting piece passes through the sliding hole 4311 to be connected with the first connecting sleeve 431, and the connecting piece can move along the extending direction of the sliding hole 4311.
Referring to fig. 11 and 12, the output shaft loading mechanism 5 is movably disposed below the positioning mechanism 3 in the vertical direction, the output shaft loading mechanism 5 includes a second driving assembly 51, a second transmission shaft assembly 52 and a loading connection assembly 53, the second driving assembly 51 drives the second transmission shaft assembly 52 to rotate around its own axis, a second torque sensor 54 is disposed in the middle of the second transmission shaft assembly 52, and the second torque sensor 54 is connected with the control unit. A load linkage assembly 53 is provided at the end of the second drive shaft assembly 52.
The load linkage assembly 53 includes a second linkage sleeve 531, a third linkage sleeve 532, a second spring 533, a third spring 534, and a second connector 535. The second connecting sleeve 531 is connected to the second transmission shaft assembly 52 and the second connecting head 535 at two ends, and the second spring 533 is disposed inside the second connecting sleeve 531 and elastically abuts between the second transmission shaft assembly 52 and the second connecting head 535. The first end of the second connection sleeve 531 is provided with a through hole 5311, the second connector 535 is provided with a groove 5351 along the circumferential direction, and the through hole 5311 and the groove 5351 are opposite and communicated with each other. Balls 536 are provided between the second coupling sleeve 531 and the second connector 535, and the balls 536 are simultaneously located in the through hole 5311 and the groove 5351 to limit the separation of the second coupling sleeve 531 and the second connector 535.
The third connecting sleeve 532 is sleeved on the second connecting sleeve 531, the balls 536 are located inside the first end of the third connecting sleeve 532, and the third connecting sleeve 532 can prevent the balls 536 from separating from the through hole 5311. The second end of the third connecting sleeve 532 is provided with a sixth mounting groove 5321, the outer side wall of the second end of the second connecting sleeve 531 is provided with a stop portion 5312 along the annular direction, and the third spring 534 is arranged in the sixth mounting groove 5321 and elastically abuts between the stop portion 5312 and the groove bottom of the sixth mounting groove 5321. An end cover 537 is further disposed outside the second coupling sleeve 531, the end cover 537 is connected to the third coupling sleeve 532, and the end cover 537 and the third coupling sleeve 532 are located at two sides of the stopper portion 5312 to prevent the third coupling sleeve 532 from separating from the second coupling sleeve 531.
The installation process of the product 1 of the embodiment is as follows: controlling the upper bracket 12 of the product 1 to be positioned above the second movable positioning tool 35, then inserting the input shaft 11 of the product 1 into the first mounting groove 352, so that the positioning hole 121 of the upper bracket 12 is sleeved on the positioning pin 343 on the first movable positioning tool 34, and then abutting the upper bracket 12 of the product 1 against the second movable positioning tool 35 to support the product 1; at this time, the in-place detection assembly detects that the product 1 is in place, and the control unit controls the clamping assembly 36 to clamp the product 1, so that the product 1 is prevented from falling off; then, the positioning driving assembly 32 drives the product 1 to move towards the fixing tool assembly, so that the connecting portion 15 of the product 1 is connected with the first fixing and positioning tool 38, the electric booster 14 of the product 1 is connected with the second fixing and positioning tool 39, the fixed connection between the product 1 and the positioning mechanism 3 is completed, and at this time, the controllable input shaft driving mechanism 4 and the controllable output shaft loading mechanism 5 are respectively connected with the product 1, and relevant performance tests are performed.
Claims (8)
1. Final function and NVH testing arrangement of electric power steering gear, including control unit, frame, positioning mechanism, input shaft actuating mechanism and output shaft loading mechanism, control unit respectively with positioning mechanism input shaft actuating mechanism with the output shaft loading mechanism electricity is connected, input shaft actuating mechanism positioning mechanism with the output shaft loading mechanism sets gradually from top to bottom in the frame, its characterized in that:
the final function of electric power steering and NVH testing arrangement still includes NVH detection mechanism, NVH detection mechanism includes:
the guide rail is arranged on the positioning mechanism along the horizontal direction;
the sliding block is arranged on the guide rail and can move along the extending direction of the guide rail;
the NVH fixing seat is arranged on the sliding block and moves along with the sliding block;
the rotary seat is arranged on the NVH fixing seat and comprises a first guide rod, a second guide rod, a first connecting seat and a second connecting seat, the first guide rod is arranged on the NVH fixing seat, the first connecting seat is arranged on the first guide rod and can rotate around the first guide rod, the second guide rod is arranged on the first connecting seat, the second guide rod is perpendicular to the first guide rod, and the second connecting seat is arranged on the second guide rod and can rotate around the second guide rod;
the detection head and the horizontal pushing driving mechanism are arranged on the second connecting seat, and the horizontal pushing driving mechanism drives the detection head to move towards the positioning mechanism.
2. The electric power steering final function and NVH testing apparatus according to claim 1, characterized in that:
the NVH fixing seat is also provided with two locking mechanisms, and the two locking mechanisms are positioned on two sides of the sliding block;
the locking mechanism comprises a clamping mounting seat, a first clamping sleeve and a second clamping sleeve, a through hole and a clamping mounting groove are formed in the clamping mounting seat, and the clamping mounting groove is located in the middle of the clamping mounting seat and is communicated with the through hole;
the first clamping sleeve and the second clamping sleeve are respectively located at two ends of the through hole and can move relatively close to each other, the first clamping sleeve and the second clamping sleeve respectively protrude out of two inner sides of the clamping installation groove, a clamping opening is formed between the first clamping sleeve and the second clamping sleeve, and the guide rail is located in the clamping opening.
3. The electric power steering final function and NVH testing apparatus according to claim 2, characterized in that:
the locking mechanism further comprises an adjusting rod, a first elastic piece, a second elastic piece and a locking handle assembly, the adjusting rod penetrates through the through hole and is inserted into the first clamping sleeve and the second clamping sleeve, the locking handle assembly is arranged at the end of the adjusting rod and is abutted to the first clamping sleeve, and the locking handle assembly can push the first clamping sleeve to move along the axial direction of the adjusting rod;
be equipped with first backstop groove and second backstop groove on the through-hole, first elastic component sets up in the first backstop groove and elasticity butt be in the tank bottom in first backstop groove with between the first clamping sleeve, the second elastic component sets up in the second backstop groove and elasticity butt be in between the tank bottom in second backstop groove and the second clamping sleeve.
4. The electric power steering final function and NVH test apparatus according to any one of claims 1 to 3, characterized in that:
the positioning mechanism comprises a positioning fixing seat, the NVH detection mechanism is positioned above the positioning fixing seat, a first fixed positioning tool and a second fixed positioning tool are arranged on the positioning fixing seat, and the second fixed positioning tool is positioned on one side of the first fixed positioning tool;
the number of the NVH detection mechanisms is two, and the detection heads of the two NVH detection mechanisms face the first fixed positioning tool and the second fixed positioning tool respectively.
5. The electric power steering final function and NVH test apparatus according to any one of claims 1 to 3, characterized in that:
input shaft actuating mechanism sets up with removing along vertical direction positioning mechanism's top, input shaft actuating mechanism includes first drive assembly, first transmission shaft subassembly and drive coupling assembling, first drive assembly drive first transmission shaft subassembly is around its self axial rotation, the middle part of first transmission shaft subassembly is equipped with first torque sensor and encoder, drive coupling assembling sets up the tip of first transmission shaft subassembly.
6. The electric power steering final function and NVH testing apparatus according to claim 5, wherein:
the driving connection assembly comprises a first connection sleeve, a sliding rod, a first connection head and a first spring, the sliding rod is inserted into the first connection sleeve, the first spring is elastically abutted between the first connection sleeve and the first end of the sliding rod, and the first connection head is detachably connected with the second end of the sliding rod.
7. The electric power steering final function and NVH test apparatus according to any one of claims 1 to 3, characterized in that:
output shaft loading mechanism sets up with removing along vertical direction positioning mechanism's below, output shaft loading mechanism includes second drive assembly, second transmission shaft subassembly and loading coupling assembling, the drive of second drive assembly second transmission shaft subassembly is rotatory around its self axis, the middle part of second transmission shaft subassembly is equipped with second torque sensor, loading coupling assembling sets up the tip of second transmission shaft subassembly.
8. The electric power steering final function and NVH testing apparatus according to claim 7, characterized in that:
the loading connecting assembly comprises a second connecting sleeve, a third connecting sleeve, a second spring, a third spring and a second connector, two ends of the second connecting sleeve are respectively connected with the second transmission shaft assembly and the second connector, and the second spring is arranged in the second connecting sleeve and elastically abutted between the second transmission shaft assembly and the second connector;
the third connecting sleeve is sleeved on the second connecting sleeve, balls are arranged between the second connecting sleeve and the second connector, the balls are located in the third connecting sleeve, the side wall of the second connecting sleeve is provided with a stopping portion along the annular direction, and the third spring is arranged in the third connecting sleeve and is in elastic butt connection with the stopping portion and between the third connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440848.7U CN211825052U (en) | 2020-03-30 | 2020-03-30 | Final function and NVH tester for electric power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440848.7U CN211825052U (en) | 2020-03-30 | 2020-03-30 | Final function and NVH tester for electric power steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211825052U true CN211825052U (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020440848.7U Active CN211825052U (en) | 2020-03-30 | 2020-03-30 | Final function and NVH tester for electric power steering gear |
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| CN (1) | CN211825052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629892A (en) * | 2020-12-15 | 2021-04-09 | 英诺菲特(北京)科技有限公司 | Electric power steering system testing device |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629892A (en) * | 2020-12-15 | 2021-04-09 | 英诺菲特(北京)科技有限公司 | Electric power steering system testing device |
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