KR101989557B1 - Durability testing system for a motor driven power steering mounting part - Google Patents

Abstract

The present invention relates to a system to conduct a simulation test on the endurance strength of an MDPS mounting part of a cowl cross bar. The system includes: a simulation tester conducting a simulation test on endurance strength; a rack placed on one side of the simulation tester; an electric box supplying electricity to the rack and the simulation tester; a system controller controlling the simulation tester; and a reporting device reporting an error to the outside. Therefore, the present invention is capable of improving the reliability of a result value about endurance strength.

Description

Technical Field [0001] The present invention relates to a durability testing system for a MDPS mounting portion of a cow cross bar,

The present invention relates to a durability testing system for an MDPS mounting portion of a cow cross bar, and more particularly, to a durability testing system for an MDPS mounting portion of a cow cross bar, To a durability test system for an MDPS mounting part of a cowl cross bar that can be used to verify the durability of a cowl cross bar and improve the reliability of the result value.

Motor driven power steering (MDPS) is an alternative to conventional hydraulic power steering systems that use electric motors.

In other words, the electric steering system (MDPS) is driven by the electric motor. When the driver turns the steering wheel (the steering wheel), the sensor senses the direction and speed of rotation, and then turns the electric motor to transmit appropriate driving force to the front wheel of the vehicle.

This electric steering system supplies electric power from the generator of the vehicle instead of the belt, and operates the electric motor only when necessary, thereby reducing fuel consumption of the engine and emission of pollutants.

In addition, when the electric steering system is applied, the fuel consumption can be improved, the part occupied by the engine room is reduced, and the weight is more than 5 kg.

Such an electric steering system is one of the important parts of a motor vehicle to be released recently, and is regarded as a durable part which can be used for a long time because it is continuously moved by the driver. Therefore, it is important to perform endurance strength test on the MDPS mounting part of the cow cross bar on which the electric steering system is mounted.

However, up to now, it is necessary to develop a technology for the MDPS mounting portion of the cow cross bar in order to carry out a test for the durability strength test.

Korea Patent Office Application No. 10-1995-0058167 Korea Patent Office Application No. 10-1999-0026575 Korea Patent Office Application No. 10-2002-0040886 Korea Patent Office Application No. 20-2005-0026265

It is an object of the present invention to prove durability such as welding separation, breakage, and warping of an MDPS mounting portion of a cow cross bar on which an electric power steering system (MDPS) is mounted, To provide a durability strength simulation test system for an MDPS mounting portion of a cow cross bar.

The above object is accomplished by a simulation test apparatus for carrying out a durability strength simulation test including a rotational durability test and a bending stiffness test for an MDPS (Motor Driven Power Steering) mounting portion of a cowl cross bar; A rack provided at one side of the simulation test apparatus; An electronic box connected to the rack and supplying electricity to the simulation testing apparatus and the rack; A system controller provided in the rack and controlling the simulation testing apparatus for the rotational durability test and the bending stiffness test; And an alerting device connected to the system controller and informing the outside of errors that may occur in the endurance simulation test. The simulated test device may further include a simulator for simulating endurance of the MDPS mounting portion of the cow cross bar, An input driver for conducting rotational durability tests and bending stiffness tests on specimens equipped with an electric steering system (MDPS); An output loader for performing the rotational durability test and the bending stiffness test together with the input driver and outputting a test value; A specimen stand disposed between the input driver and the output loader for positionally adjusting the specimen; And a base frame integrally supporting the input driver, the output loader, and the specimen stand, wherein a plurality of mounting holes for mounting the input driver, the output loader, and the specimen stand are formed on the base frame, Characterized in that the input driver, the output loader and the specimen stand are installed at predetermined positions on the base frame via a plurality of mounting holes, the MDPS mounting portion of the cow cross bar .

Wherein the input driver is connected to a steering wheel coupled to the electric steering system of the specimen and the electric steering system to constitute an upper region and includes an angle for the rotational endurance test and an input for controlling the load for the bending stiffness test Input Driver Motor Assy; And an input driver frame for supporting the input driver motor. The input driver motor is provided to be adjustable in height by a first screw jack, and a second ball screw (Ball Screws, and is adjustably adjustable by a second screw jack. A first protractor is disposed around the second ball screw and the second screw jack Wherein the input driver motor comprises: a first servo motor for the rotation durability test; A first air cylinder for the bending stiffness test; A first positioning module (LVDT) capable of determining the position of the first air cylinder; A first load cell capable of measuring an input load; A wheel clamp capable of clamping or unclamping the steering wheel; And a clamp bar connected to the wheel clamp and the first air cylinder. When the power is transmitted from the first servo motor during the rotation durability test, the first decelerator, the first coupling, the first torque cell, A connector is provided for controlling the angle of the electric steering system in a first setup, the electric steering system being connected to the first setup, wherein the input driver frame is provided with a pneumatic line portion, A direction switching valve for controlling the load and the direction of the first air cylinder, the pneumatic line portion supplying air to the first air cylinder and allowing forward, backward, and stopping; An electronic regulator that controls the air pressure within the range of 0 to 9 Bar; And a manual regulator for setting the input air pressure to 6 bar, wherein the output loader includes an output loader motor assembly connected to the electric steering device to provide a load, the output loader motor And a second servomotor for rotating durability test. When the second serration unit connected to the electric power steering apparatus during the rotation durability test is rotated, the second servomotor provides a load in the opposite direction, And a second torque cell between the second serration unit and the second servomotor and output as a graph. The specimen stand includes a T slot table on which the specimen is mounted; A stand screw jack for adjusting the height of the T slot table; A plurality of specimen holder jigs provided on the T slot table for supporting the specimen; First and second side supports for supporting the specimen together with the specimen support jig; A specimen center support disposed between the first and second side supports; An upper jig disposed at an upper end of the specimen center support and supporting the specimen; And a plurality of bottom jigs disposed around the specimen center support and supporting the specimen bottom.

The above object can be attained by a simulation test apparatus for performing a durability strength simulation test including a rotational durability test and a bending stiffness test for an MDPS (Motor Driven Power Steering) mounting portion of a cowl cross bar. A rack provided at one side of the simulation test apparatus; An electronic box connected to the rack and supplying electricity to the simulation testing apparatus and the rack; A system controller provided in the rack and controlling the simulation testing apparatus for the rotational durability test and the bending stiffness test; And an alerting device connected to the system controller and informing the outside of errors that may occur in the endurance simulation test. The simulated test device may further include a simulator for simulating endurance of the MDPS mounting portion of the cow cross bar, An input driver for conducting rotational durability tests and bending stiffness tests on specimens equipped with an electric steering system (MDPS); An output loader for performing the rotational durability test and the bending stiffness test together with the input driver and outputting a test value; A specimen stand disposed between the input driver and the output loader for positionally adjusting the specimen; And a base frame integrally supporting the input driver, the output loader, and the specimen stand, wherein a plurality of mounting holes for mounting the input driver, the output loader, and the specimen stand are formed on the base frame, Wherein the input driver, the output loader, and the specimen stand are installed at predetermined positions on the base frame via a plurality of mounting holes, and the input driver includes an upper region, An input driver motor assembly connected to a steering wheel coupled to an electric steering device for controlling an angle for the rotation durability test and a load for the bending rigidity test; And an input driver frame for supporting the input driver motor. The input driver motor is provided to be adjustable in height by a first screw jack, and a second ball screw (Ball Screws, and is adjustably adjustable by a second screw jack. A first protractor is disposed around the second ball screw and the second screw jack Wherein the input driver motor comprises: a first servo motor for the rotation durability test; A first air cylinder for the bending stiffness test; A first positioning module (LVDT) capable of determining the position of the first air cylinder; A first load cell capable of measuring an input load; A wheel clamp capable of clamping or unclamping the steering wheel; And a clamp bar connected to the wheel clamp and the first air cylinder. When the power is transmitted from the first servo motor during the rotation durability test, the first decelerator, the first coupling, the first torque cell, A connector is provided for controlling the angle of the electric steering system in a first setup, the electric steering system being connected to the first setup, wherein the input driver frame is provided with a pneumatic line portion, A direction switching valve for controlling the load and the direction of the first air cylinder, the pneumatic line portion supplying air to the first air cylinder and allowing forward, backward, and stopping; An electronic regulator that controls the air pressure within the range of 0 to 9 Bar; And a manual regulator for setting the input air pressure to 6 bar, wherein the output loader includes an output loader motor assembly connected to the electric steering device to provide a load, the output loader motor And a second servomotor for rotating durability test. When the second serration unit connected to the electric power steering apparatus during the rotation durability test is rotated, the second servomotor provides a load in the opposite direction, And a second torque cell between the second serration unit and the second servomotor and output as a graph. The specimen stand includes a T slot table on which the specimen is mounted; A stand screw jack for adjusting the height of the T slot table; A plurality of specimen holder jigs provided on the T slot table for supporting the specimen; First and second side supports for supporting the specimen together with the specimen support jig; A specimen center support disposed between the first and second side supports; An upper jig disposed at an upper end of the specimen center support and supporting the specimen; And a plurality of bottom jigs disposed in the periphery of the specimen center support to support the lower portion of the specimen, the input driver being adjustable in position by a first ball screw for relative positioning with the specimen, Wherein the output loader is positionally fixed by a U-clamp and the height of the specimen stand is adjustable according to a position of the specimen. The durability of the MDPS mounting portion of the cowl cross bar It is also achieved by a simulated test system.

INDUSTRIAL APPLICABILITY According to the present invention, durability such as welding separation, breakage, and warping of an MDPS mounting portion of a cow cross bar on which an electric power steering system (MDPS) is mounted can be verified beforehand and reliability of a resultant value can be improved There is an effect.

1 is a configuration diagram of a durability strength simulation test system for an MDPS mounting portion of a cow cross bar according to an embodiment of the present invention.
2 is an enlarged view of the simulation test apparatus shown in Fig.
3 is an enlarged view of the input driver.
4 is an enlarged side view of the main part of Fig.
5 is a detailed structural diagram of the input driver motor drive region.
6 is a view for explaining the pneumatic line portion provided in the input driver frame.
7 is an enlarged view of the output loader.
8 is a detailed structural diagram of the output loader motor drive region.
9 is an enlarged view of the specimen stand.
10 is a side view of the specimen clamped to the specimen stand.
11 is a structural view of a connector for rotating durability test.
12 is a layout diagram of the rotation durability test.
13 is a layout diagram of the bending stiffness test.
Figure 14 is a control block diagram of an MDPS mounting portion durability strength simulation test system of a cow cross bar according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present specification, the present embodiment is provided to complete the disclosure of the present invention and to fully disclose the scope of the invention to a person having ordinary skill in the art to which the present invention belongs. And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

Like reference numerals refer to like elements throughout the specification. And (used) terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention.

In the present specification, the singular form includes plural forms unless otherwise specified. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an enlarged view of a simulation test apparatus shown in Fig. 1, Fig. 3 is an enlarged view of an input driver, and Fig. 3 is an enlarged view of an input driver of an MDPS mounting portion of a cow cross bar according to an embodiment of the present invention. Fig. 4 is an enlarged side view of the main part of Fig. 3, Fig. 5 is a detailed structure of the input driver motor area, Fig. 6 is a view for explaining the pneumatic line portion provided in the input driver frame, Fig. 8 is a detailed structural view of the output loader motor area, Fig. 9 is an enlarged view of the specimen stand, Fig. 10 is a side view of the specimen clamped on the specimen stand, 12 is a layout view of the rotation durability test, Fig. 13 is a layout diagram of the bending stiffness test, and Fig. 14 is a block diagram of the control block of the durability strength simulation test system of the MDPS mounting portion of the cow cross bar according to the embodiment of the present invention A.

Referring to these drawings, the durability strength simulation test system of the MDPS mounting portion of the cow cross bar according to the present embodiment is a cowl cross bar having a cowl mounted with an electric power steering (MDPS) 10 in a manner of forcibly and continuously applying vibration, The durability such as welding separation, breakage, and warping of the cross bar 30 can be verified in advance and the reliability of the result value can be improved. Furthermore, since the inverse analysis can be performed in case of trouble, So that the loss can be reduced.

Particularly, the durability strength simulation test system of the MDPS mounting portion of the cow cross bar according to the present embodiment is characterized in that the durability strength simulation test system of the cow cross bar according to the present embodiment is constituted by a rotational endurance test for the cow cross bar 30 on which the electric- The bending rigidity test for the cow cross bar 30 on which the apparatus 10 is mounted can be carried out.

As shown in FIG. 1, the MDPS mounting portion of the cow cross bar according to the embodiment of the present invention performs the MDPS (Motor Driven Power Steering) of the cowl cross bar 30 ), A durability strength test including the durability test and the flexural rigidity test on the mounting portion, a rack 500 provided on one side of the simulation test apparatus 100, (Electronic box) 600 connected to the test apparatus 100 and the rack 500 and connected to the test apparatus 500 and supplying electricity to the test apparatus 100 and the rack 500. The electronic box 600 is provided in the rack 500 and is used for simulating the rotational durability test and the bending stiffness test. A system controller 700 for controlling the testing apparatus 100 and a notifying device 800 connected to the system controller 700 for informing the outside of errors that may occur in the durability strength simulation test. Since the notification device 800 is provided, it is possible to inform the outside of the situation in an emergency situation or an error occurrence so that quick action can be taken. Therefore, damage such as a safety accident or damage of a component can be minimized.

As described above, an MDPS (Motor Driven Power Steering) 10 can be mounted on the MDPS mounting portion of the cow cross bar 30, and the steering wheel 20 can be assembled to one side of the MDPS mounting portion. The entire part in which the electric steering system 10 and the steering wheel 20 are mounted on the cow cross bar 30 will be described as a test piece 1 (see Fig. 1).

The size, structure, and external shape of the electric steering apparatus 10 and the cow cross bar 30 are different for each maker, since the steering wheel 20 has a circular ring shape. Therefore, the scope of the present invention is not limited to the shape of the drawings.

For reference, the equipment specifications for driving the durability strength simulation test system of the MDPS mounting portion of the cow cross bar according to the present embodiment are 240V, 3P, and 145A. Also, a pneumatic pressure of 7 bar or more is required. However, the scope of the present invention is not limited to these conditions.

The simulation test apparatus 100 may include an input driver 200, an output loader 300, and a specimen stand 400.

The input driver 200 is a device for conducting a rotational durability test and a bending stiffness test on the test piece 1. [

The output loader 300 is a device for performing a rotational durability test and a bending stiffness test together with the input driver 200 and outputting a test value.

The specimen stand 400 is disposed between the input driver 200 and the output loader 300 and supports the specimen 1 in a position adjustable manner.

The input driver 200, the output loader 300, and the specimen stand 400 may be integrally supported on the base frame 110. Therefore, it is advantageous to move them at a time.

A plurality of mounting holes 111 for mounting the input driver 200, the output loader 300 and the specimen stand 400 are formed on the base frame 110. [ The input driver 200, the output loader 300 and the specimen stand 400 can be installed at appropriate positions on the base frame 110 via a plurality of mounting holes 111. [

A plurality of anti-slip foots 112 are provided under the base frame 110. The anti-slip foot 112 is disposed at four corners of the base frame 110 to stably support the base frame 110. The cut-out portion 113 is formed on the side of the base frame 110.

The input driver 200 can be moved laterally along the specimen 1 by the first ball screw 201 for adjusting the relative position with the specimen 1. [ The output loader 300 can be fixed to the U-clamp 301 in accordance with the electric-powered steering apparatus 10. [ The height of the specimen stand 400 can be adjusted according to the position of the specimen 1.

Referring to the input driver 200, the rotational durability test and the bending stiffness test for the test piece 1 are performed.

The input driver 200 is connected to the electric steering system 10 and the steering wheel 20 of the test specimen 1 in the upper area and controls the angle for the rotation durability test and the input driver for controlling the load for the bending stiffness test An input driver motor assembly 210 and an input driver frame 240 supporting the input driver motor assembly 210 in a lower region.

The input driver motor ASE 210 can adjust the height by using a first screw jack (Screw Jack) 211.

Learn how to adjust the height of the input driver motor (210). First, the clamp is released using the clamp lever 213 attached to the four clamps 212. Then, adjust the height of the screw jack shaft (Screw Jack Shaft 214) by using a 10 mm spanner or a 10 mm box. After adjusting the height, tighten the four clamps (212) again.

The input driver motor 210 is forward and backward by a second ball screw 215 and is adjustable in angle by a second screw jack 216. The angle can be adjusted within the range of 17 ㅀ to 30..

A first protractor 217 is disposed around the second ball screw 215 and the second screw jack 216. A unit bearing 219 is provided on the opposite side of the second screw jack 216.

Learn how to adjust the angle of the input driver motor (210). First, the fixing bolt 218 is loosened. Then, the angle of the second screw jack 216 is adjusted by using a 10 mm spanner or a 10 mm box. After checking the angle of the first protractor 217 and adjusting the angle, the fixing bolt 218 that has been loosened may be tightened again.

The input driver motor assembly 210 includes a first servomotor 221 for rotational endurance testing and a first air cylinder 225 for bending stiffness testing.

First, when the first servomotor 221 transmits power to the first serration 224 through the first reducer 222, the first coupling 222a, the first torque cell 223, The angle of the electric steering system (MDPS) 10 can be controlled.

A connector 230 having the structure shown in FIG. 11 is used for connecting the electric steering apparatus 10 to the first serration 224. The connector 230 includes a first connector 231 connected to the shaft 11 of the electric steering system 10 and a second connector 234 having a connection serration 234 connected to the first serration 224 233, and a connecting bolt 232 connecting the first and second connectors 231, 233.

The first serration 224 is connected to the connection serration 234 of the second connection port 233 after the connector 230 is connected to the electric power steering apparatus 10 as shown in FIG. And can proceed through the rotation of the first servo motor 221.

Next, in the bending stiffness test, the first air cylinder 225 may be used. The first air cylinder 225 may include a first positioning module (LVDT) 226 capable of determining the position of the first air cylinder, a first load cell The bending rigidity test of the sample 1 can be carried out.

As shown in Fig. 4 for this bending stiffness test, a wheel clamp 228 capable of clamping or unclamping the steering wheel 20 and a wheel clamp 228 connected to the wheel clamp 228 and the first air cylinder 225 Clamp bar 229 may be included.

13, when the wheel clamp 228 is clamped to the steering wheel 20, the clamping bar 229 is pressed by the first air cylinder 225 and the first positioning module LVDT , And 226, respectively.

On the other hand, the input driver frame 240 is provided with a pneumatic line portion 250 as shown in Fig.

The pneumatic line unit 250 is disposed behind the input driver frame 240 and serves to control the load and direction of the first air cylinder 225 using pneumatic pressure. The pneumatic line section 250 includes a directional control valve 251, an electronic regulator 252, and a manual regulator 253.

The directional control valve 251 supplies air to the first air cylinder 225 and enables forward, backward, and stop. The electronic regulator 252 controls the air pressure within the range of 0 to 9 Bar. The manual regulator 253 feeds the input air pressure to the electronic regulator 252 at a predetermined level. That is, manually turn the valve to control. You can set it to 6 bar.

Meanwhile, as shown in FIG. 7, the output loader 300 includes an output loader motor assembly 310 connected to the MDPS 10 to provide a load. (MDPS) 10 through the output loader motor assembly 310 to control the installation angle of the MDPS 10.

Learn how to adjust the angle of the output loader motor (310). First, the fixing bolt 321 is loosened. The handle 322 then adjusts the angle of the output loader motor assembly 310. At this time, the angle of the output loader motor assembly 310 is adjusted while viewing the second protractor 324. A handle reducer 323 is connected to the handle 322. When adjustment is completed, tighten fixing bolt (321) again.

The output loader motor drive 310 includes a second servo motor 311 for rotational endurance testing. When the second serration unit 312 connected to the electric power steering apparatus 10 rotates during the rotation durability test, the second servomotor 311 applies a load in the opposite direction. The load value is measured and measured in a second torque cell 313 between the second serration unit 312 and the second servo motor 311 and is shown graphically.

And the second reducer 314 is connected to the second servo motor 311. The second reducer 314 and the second torque cell 313 and the second torque cell 313 and the second serration portion 312 are connected by the second couplings 315 and 316, respectively.

On the other hand, the specimen stand 400 serves to fix the specimen 1 as if it is an actual vehicle. The height of the T slot table 402 on which the test piece 1 is mounted can be adjusted by using the stand screw 401.

In the T slot table 402, a plurality of specimen support jigs 410 for supporting the specimen 1 are disposed. The sample-supporting jig 410 can be applied as a shock absorber capable of buffering action.

First and second side supports 421 and 422 are provided to support the specimen 1 together with the specimen supporting jig 410. The first and second side supports 421 and 422 support the side of the test piece 1 in such a manner that one side thereof is fixed to the T slot table 402 and the other side is screwed to the test piece 1.

Between the first and second side supports 421, 422, a specimen center support 424 is provided. An upper jig 425 is provided at the upper end of the specimen center support 424 to support the specimen 1 at that position by fixing the specimen 1 and the specimen center support 424 with screws.

A plurality of bottom jigs 423 are provided around the specimen center support 424 to support the lower portion of the specimen 1. The bottom jig 423 can also support the test piece 1 in a screw fixing manner.

Meanwhile, a method of adjusting the height of the T slot table 402 will be described. The stand clamp 404 is released using the stand clamp lever 405 connected to the stand clamp 404. Then, the height of the T slot table 402 is adjusted by using a 10 mm spanner or a 10 mm box in the stand screw jack 401. When the height adjustment is completed, the stand clamp 404 is tightened again.

If the height of the T slot table 402 is adjusted as described above, the height of the specimen supporting jig 410 on the upper portion of the J slot can be adjusted together with the height of the T slot table 402. As a result, the height of the specimen 1 can be adjusted. This has the advantage of being able to test various types of specimens.

On the other hand, the system controller 700 controls the rotation durability test and the bending stiffness test for the test piece 1. [ In other words, the system controller 700 controls the operations of the simulation testing apparatus 100, particularly the input driver 200 and the output loader 300, for the rotational durability test of FIG. 12 for the test piece 1 and the bending stiffness test of FIG. Control. The system controller 700 performing such a role may include a central processing unit 710, a memory 720, a memory 720, and a support circuit 730 (SUPPORT CIRCUIT).

The central processing unit 710 is connected to the simulation test apparatus 100, in particular the input driver 200 and the output loader 300, for the rotational durability test of Fig. 12 and the bending stiffness test of Fig. 13 for the specimen 1 in this embodiment. Lt; RTI ID = 0.0 > industrial < / RTI >

The memory 720 (MEMORY) is connected to the central processing unit 710. The memory 720 may be a computer-readable recording medium and may be located locally or remotely and may be any of various types of storage devices, including, for example, random access memory (RAM), ROM, floppy disk, hard disk, May be at least one or more memories.

A support circuit 730 (SUPPORT CIRCUIT) is coupled with the central processing unit 710 to support the typical operation of the processor. Such a support circuit 730 may include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like.

In this embodiment, the system controller 700 controls the rotation durability test and the bending stiffness test for the test piece 1. [ At this time, the operation of the simulation testing apparatus 100, particularly the input driver 200 and the output loader 300, for the rotational durability test of Fig. 12 and the bending stiffness test of Fig. 13 for the test piece 1, And the like may be stored in the memory 720. [0064] Typically, software routines may be stored in memory 720. The software routines may also be stored or executed by other central processing units (not shown).

Although processes according to the present invention are described as being performed by software routines, it is also possible that at least some of the processes of the present invention may be performed by hardware. As such, the processes of the present invention may be implemented in software executed on a computer system, or in hardware such as an integrated circuit, or in combination of software and hardware.

According to the present embodiment having the structure and function as described above, it is possible to perform welding separation, breakage, warping, etc. of the cowl cross bar on which the electric steering system (MDPS) is mounted in a manner of forcibly and continuously applying vibration, The reliability of the result value can be improved, and furthermore, since the inverse analysis can be performed in case of a problem, it is possible to reduce the loss through preliminary problem detection.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It is therefore intended that such modifications or alterations be within the scope of the claims appended hereto.

1: Piece 10: Electric steering
11: shaft 20: steering wheel
30: Cow cross bar 100: Simulation test apparatus
110: base frame 111: through hole for installation
112: anti-slip foot 113:
200: Input driver 201: 1st ball screw
210: Input Driver Motor ASIC 211: First Screw Jack
212: Clamp 213: Clamp lever
214: Input driver motor 215: Second ball screw
216: second screw jack 217: first protractor
218: Fixing bolt 219: Unit bearing
221: first servo motor 222: first reduction gear
223: first torque cell 224: first serration
225: first air cylinder 226: first positioning module
227: first load cell 228: clamp
229: clamp bar 240: input driver frame
250: pneumatic line portion 251: directional switching valve
252: Electronic regulator 253: Manual regulator
300: Output loader 301: U clamp
310: Output Loader Motor ASE 400: Specimen Stand
401: stand screw jack 402: T slot table
410: Jig for sample support 421: First side support
422: second side support 500: rack
600: Electric box 700: System controller
800: Notification device

Claims (3)

A simulation test apparatus for performing a durability strength test including a rotational durability test and a bending stiffness test for a motor driven power steering (MDPS) mounting portion of a cowl cross bar;
A rack provided at one side of the simulation test apparatus;
An electronic box connected to the rack and supplying electricity to the simulation testing apparatus and the rack;
A system controller provided in the rack and controlling the simulation testing apparatus for the rotational durability test and the bending stiffness test; And
And a notification device connected to the system controller for informing an external error that may occur in the endurance simulation test,
The simulation test apparatus includes:
An input driver for conducting a rotational durability test and a bending stiffness test on the specimen on which the electric power steering system (MDPS) is mounted for the durability strength simulation test of the MDPS mounting portion of the cow cross bar;
An output loader for performing the rotational durability test and the bending stiffness test together with the input driver and outputting a test value;
A specimen stand disposed between the input driver and the output loader for positionally adjusting the specimen; And
And a base frame integrally supporting the input driver, the output loader, and the specimen stand,
Wherein the base frame is provided with a plurality of mounting holes for mounting the input driver, the output loader, and the specimen stand, and the input driver, the output loader, And the specimen stand is installed,
The input driver includes:
And an input driver connected to a steering wheel coupled to the electric steering apparatus and the electric steering apparatus of the specimen to control an angle for the rotational durability test and a load for the bending stiffness test, Driver Motor Assy); And
And an input driver frame for supporting the input driver motor,
The input driver motor is provided to be adjustable in height by a first screw jack, and is capable of forward and backward movement by a second ball screw, and a second screw jack, Which is provided to be adjustable in angle,
Wherein a first protractor is disposed around the second ball screw and the second screw jack,
The input driver motor,
A first servo motor for the rotation durability test;
A first air cylinder for the bending stiffness test;
A first positioning module (LVDT) capable of determining the position of the first air cylinder;
A first load cell capable of measuring an input load;
A wheel clamp capable of clamping or unclamping the steering wheel; And
And a clamp bar connected to the wheel clamp and the first air cylinder,
Wherein when the power is transmitted from the first servomotor during the rotation durability test, the angle of the electric steering apparatus is controlled in the first serration through the first reducer, the first coupling, and the first torque cell, A connector is provided to connect the electric steering device,
Wherein the input driver frame is provided with a pneumatic line portion, the pneumatic line portion controlling a load and a direction of the first air cylinder by using a pneumatic pressure,
The air-
A direction switching valve for supplying air to the first air cylinder and allowing forward, backward, and stop of the air;
An electronic regulator that controls the air pressure within the range of 0 to 9 Bar; And
A manual regulator for setting the input air pressure to 6 bar,
Wherein the output loader includes an output loader motor assembly connected to the electric steering system to provide a load,
Wherein the output loader motor includes a second servo motor for the rotation durability test,
When the second serration unit connected to the electric power steering apparatus rotates during the rotation durability test, the second servomotor provides the load in the opposite direction, and the load value is set to a value between the second serration unit and the second servo motor Measured with a second torque cell and output as a graph,
In the specimen stand,
A T slot table on which the specimen is mounted;
A stand screw jack for adjusting the height of the T slot table;
A plurality of specimen holder jigs provided on the T slot table for supporting the specimen;
First and second side supports for supporting the specimen together with the specimen support jig;
A specimen center support disposed between the first and second side supports;
An upper jig disposed at an upper end of the specimen center support and supporting the specimen; And
And a plurality of bottom jigs disposed around the specimen center support to support the specimen bottom.
delete A simulation test apparatus for performing a durability strength test including a rotational durability test and a bending stiffness test for a motor driven power steering (MDPS) mounting portion of a cowl cross bar;
A rack provided at one side of the simulation test apparatus;
An electronic box connected to the rack and supplying electricity to the simulation testing apparatus and the rack;
A system controller provided in the rack and controlling the simulation testing apparatus for the rotational durability test and the bending stiffness test; And
And a notification device connected to the system controller for informing an external error that may occur in the endurance simulation test,
The simulation test apparatus includes:
An input driver for conducting a rotational durability test and a bending stiffness test on the specimen on which the electric power steering system (MDPS) is mounted for the durability strength simulation test of the MDPS mounting portion of the cow cross bar;
An output loader for performing the rotational durability test and the bending stiffness test together with the input driver and outputting a test value;
A specimen stand disposed between the input driver and the output loader for positionally adjusting the specimen; And
And a base frame integrally supporting the input driver, the output loader, and the specimen stand,
Wherein the base frame is provided with a plurality of mounting holes for mounting the input driver, the output loader, and the specimen stand, and the input driver, the output loader, And the specimen stand is installed,
The input driver includes:
And an input driver connected to a steering wheel coupled to the electric steering apparatus and the electric steering apparatus of the specimen to control an angle for the rotational durability test and a load for the bending stiffness test, Driver Motor Assy); And
And an input driver frame for supporting the input driver motor,
The input driver motor is provided to be adjustable in height by a first screw jack, and is capable of forward and backward movement by a second ball screw, and a second screw jack, Which is provided to be adjustable in angle,
Wherein a first protractor is disposed around the second ball screw and the second screw jack,
The input driver motor,
A first servo motor for the rotation durability test;
A first air cylinder for the bending stiffness test;
A first positioning module (LVDT) capable of determining the position of the first air cylinder;
A first load cell capable of measuring an input load;
A wheel clamp capable of clamping or unclamping the steering wheel; And
And a clamp bar connected to the wheel clamp and the first air cylinder,
Wherein when the power is transmitted from the first servomotor during the rotation durability test, the angle of the electric steering apparatus is controlled in the first serration through the first reducer, the first coupling, and the first torque cell, A connector is provided to connect the electric steering device,
Wherein the input driver frame is provided with a pneumatic line portion, the pneumatic line portion controlling a load and a direction of the first air cylinder by using a pneumatic pressure,
The air-
A direction switching valve for supplying air to the first air cylinder and allowing forward, backward, and stop of the air;
An electronic regulator that controls the air pressure within the range of 0 to 9 Bar; And
A manual regulator for setting the input air pressure to 6 bar,
Wherein the output loader includes an output loader motor assembly connected to the electric steering system to provide a load,
Wherein the output loader motor includes a second servo motor for the rotation durability test,
When the second serration unit connected to the electric power steering apparatus rotates during the rotation durability test, the second servomotor provides the load in the opposite direction, and the load value is set to a value between the second serration unit and the second servo motor Measured with a second torque cell and output as a graph,
In the specimen stand,
A T slot table on which the specimen is mounted;
A stand screw jack for adjusting the height of the T slot table;
A plurality of specimen holder jigs provided on the T slot table for supporting the specimen;
First and second side supports for supporting the specimen together with the specimen support jig;
A specimen center support disposed between the first and second side supports;
An upper jig disposed at an upper end of the specimen center support and supporting the specimen; And
And a plurality of bottom jigs disposed around the specimen center support and supporting the specimen bottom portion,
Wherein the input driver is adjustable in position by a first ball screw for adjusting a relative position with respect to the specimen, the output loader is positionally fixed by a U-clamp, And the height of the test piece is adjusted according to the installation position of the test piece.

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