KR20070081291A - Measuring system and method for sliding force - Google Patents

Abstract

A system and a method for measuring a sliding force are provided to remove an error due to a slip between a clamp arm and a working article according to measuring the sliding force after moving in horizontal one time for an initial abrasion. A system for measuring a sliding force includes a body(100), a jig unit(200), a driving unit(300), a load cell unit(400), and a reading device(500). The jig unit supports one side portion of a workpiece. The driving unit has a transferring plate to elongate the other side portion of the workpiece fixed by the jig unit. The load cell is installed on the transferring plate and measures the sliding force of the workpiece during the driving of the driving unit by arranging the load cell between the other portion and the transferring plate. The reading device collects a weight value corresponding to the sliding force from the load cell unit to read the collected weight value.

Description

Sliding force measuring system and measuring method {MEASURING SYSTEM AND METHOD FOR SLIDING FORCE}

1 is a perspective view of a workpiece, such as a typical lower tilt telescopic column assembly,

Figure 2 is a side view for explaining the configuration of the sliding force measuring system according to an embodiment of the present invention,

3 is a plan view of the jig driving unit shown in FIG.

4 is a cross-sectional view taken along the line A-A shown in FIG. 3;

5 is a cross-sectional view taken along the line B-B shown in FIG. 3;

FIG. 6 is a side view of a portion of the jig driver shown in FIG. 3 to explain the operation relationship thereof; FIG.

           <Description of the symbols for the main parts of the drawings>

100: main body 200: jig

300: drive unit 320: transfer plate

400: load cell unit 420: load cell

500: reading device 510: display device

The present invention relates to a sliding force measuring system and a measuring method, and more particularly, to a sliding force measuring equipment corresponding to the shaft length extension of automobile parts such as all column assemblies and steering apparatus which can extend the shaft length. The present invention relates to a sliding force measuring system and a measuring method thereof.

In general, the vehicle changes the damping force by responding to or responding to the chassis on which the engine is mounted and the force applied to the wheels, thereby preventing the wheels from directly transmitting vibrations or shocks from the road surface to the vehicle body, thereby improving ride comfort and vehicle stability. It includes a suspension device for driving the engine, a power transmission device (power transmission device) for transmitting the power of the engine, and a steering device for controlling the running of the vehicle.

Here, the steering device transmits the steering force according to the operation of the steering wheel to the valve by the steering column and the steering shaft, and causes the pinion in the rack-pinion power steering gear assembly connected to the valve through the rack bar. It is a device that moves a tie-rod, which in turn causes the wheel to move in the desired direction.

Steering columns are of non-tilt, tilt, telescopic, and tilt-telescopic types.

In particular, the tilt-telescopic type column assembly is divided into a lower type and an upper type according to the position of the tilted position.

As shown in FIG. 1, a general lower tilt-telescopic column assembly connects the universal joint assembly 7 or the steering wheel 8 to either one or the other side of the column body 1. By using it, it performs the basic function of transmitting the torque force of the steering wheel (8) to the steering gear box to be coupled with the universal joint assembly (7).

This column body 1 performs additional functions such as tilt operation t for tilt adjustment and telescopic operation e for shaft length adjustment.

In order to perform an additional function, the column body 1 includes a column housing 5 coupled to surround the steering shaft; A hinge bracket (2) for performing lower tilt at the bottom of the column housing (5); A body bracket (3) having various handles and temporary fixing structures on the upper side of the column housing part (5) for performing tilt or telescopic operation; It has a connecting ring (4) formed on the wheel shaft (6), which extends and contracts the shaft length based on the column housing (5) of the steering shaft. Here, the outer diameter of the connecting ring 4 has a size larger than the diameter of the wheel shaft (6).

After the column body 1 is completely assembled as an assembly, the force when the wheel shaft 6 is slid to extend or contract in the axial direction with respect to the column housing part 5, ie, a sliding force, is manually applied. Was inspected by a predetermined meter. Sliding force refers to the relative force generated during telescopic operation.

However, the conventional sliding force inspection method is difficult to measure the precise sliding force of the steering apparatus due to the relationship made manually.

For example, in the conventional sliding force inspection method, when abrasion occurs at a predetermined point of the column body in contact with the manual measuring instrument, an error of the sliding force due to abrasion occurs so that precise measurement is not possible.

As described above, in the situation where the sliding force is measured manually, and it is difficult to precisely measure the wear, it is not possible to automate the quality determination of the measurement target object (hereinafter referred to as the 'workpiece'), such as a lower tilt telescopic column assembly. Rather, it is adversely affecting the mass production of parts.

Accordingly, an object of the present invention for solving the above-mentioned problems is to include a jig part, a driving part and a load cell part to accurately measure the sliding force of a corresponding automobile part (eg, a steering device), and the quality of the corresponding automotive part. The present invention provides a sliding force measuring system and a measuring method capable of automating the determination.

An object of the present invention as described above is a sliding force measuring system for measuring a sliding force of a workpiece such as a steering apparatus, the jig portion for supporting the one side of the workpiece; A driving part having a conveying plate for extending or stretching the other part of the workpiece having one part fixed by the jig part; A load cell unit disposed on the transfer plate and disposing a load cell between the other side portion and the transfer plate to measure a sliding force of a workpiece when the driving unit is driven; And a reading device for collecting and reading load value data corresponding to the sliding force from the load cell unit.

In addition, the object of the present invention is a sliding force measuring method for measuring the sliding force of the workpiece by loading the workpiece to the jig, the initial wear to wear the workpiece before the initial measurement once, and the sliding force of the workpiece In the actual measurement, the driving force is achieved by the sliding force measuring method, characterized in that the load value data is respectively measured by the load cell portion provided between the driving portion and the workpiece when the transfer plate is moved forward and backward.

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

2 is a side view for explaining the configuration of the sliding force measuring system according to an embodiment of the present invention, Figure 3 is a plan view of the jig driver shown in FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. 3, FIG. 5 is a cross-sectional view taken along the line BB shown in FIG. 3, and FIG. 6 shows an operation relationship of the jig driver shown in FIG. 3. It is a side view which cuts in part to demonstrate.

First, as shown in Figure 2, the sliding force measuring system of the present invention can be realized by the movable main body 100 for measuring the sliding force of the workpiece such as the steering apparatus.

The main body 100 is composed of a lower frame of a work bench shape using a plurality of shaft members and a cross member, and an upper frame erected vertically in such a lower frame.

A plurality of movable jacks 102 are formed at the bottom of the lower frame of the main body 100.

The main body 100 includes a jig portion 200 for supporting the workpiece 10 to be measured, such as a lower tilt telescopic column assembly, a driving unit 300 for driving the workpiece 10, and sliding during driving. A load cell unit 400 for measuring force and a reading device 500 for collecting and reading load value data corresponding to a sliding force from the load cell unit 400 are provided.

In more detail, the control unit 110 is installed vertically in the lower support 101 extending from the base shaft of the lower frame behind the lower frame of the main body 100 is installed.

The control unit 110 of the main body 100 is configured to use an external power source (for example, a power source, a pneumatic source, a hydraulic source).

The controller 110 is coupled to the control switch block 120 through a connection wire. The control switch block 120 has a test start button and an emergency stop button, and transmits a switch signal corresponding to the button to the controller 110.

The controller 110 has a normal control circuit (not shown, for example, PLC, etc.) connected to a power supply interface, a control signal transmission interface, a measurement signal transmission interface, and various sensor interfaces, and through these interfaces and control circuits, Corresponding operation power, pneumatic or hydraulic signals, various control signals or command sequences corresponding to the operation method to be described, the first and second clamp device pressure controller 130 of the jig unit 200, the motor of the drive unit 300, From a load cell of the load cell 400, or a power supply of the reading device 500, or from the various motion detection sensors (for example, a sliding detection proximity sensor, etc.) for the operation control regarding the horizontal movement of the transfer plate 320 It is to receive the detection signal.

As such, the control unit 110 controls not only power and signal transmission but also various control methods of the present invention, such as input / output command sequence signal processing required for all operations and transfer of load value data to the reading device 500. The control algorithms are stored in a memory, and are configured to execute the control algorithm by a central processor that accesses the memory.

The jig part 200 uses only a plurality of pneumatic or hydraulic clamping devices as described below, so that only one side portion of the workpiece 10, that is, the hinge bracket 12 and the body bracket 13, is attached to the plurality of seating jigs, respectively. It is in charge of temporary fixing.

The driving unit 300 is based on the workpiece 10 fixed by the jig 200, such as the hinge bracket 12 and the body bracket 13 to the column housing 15, and the column housing 15. As if pulled out or pushed out from the other side of the workpiece 10 capable of telescopic operation (e.g. extending shaft length or reducing shaft length), e.g. wheel axle 16 and connecting ring 4 connected to wheel axle 16 It generates a horizontal movement force of a relatively larger size than the sliding force so that it can slide.

The load cell unit 400 plays a role of outputting load value data corresponding to the sliding force together with the load sensor structure to be input to the reading apparatus 500.

The reading device 500 is provided at a place supported by the upper frame of the main body 100.

The reading apparatus 500 collects load value data from the load cell unit 400, and displays a display device 510 that shows a result of determining whether the sliding force of the workpiece 10 is qualified or not corresponding to the collected load value data. Computer system 520.

In addition, the computer system 520 of the reading device 500 collects load value data from the load cell unit 400 so that the display device 510 can display the output data corresponding to the determination result. A central processor for performing a sliding force determination algorithm for determining at least the eligibility and ineligibility of the sliding force of the workpiece 10 by comparing and determining the load value data with reference data previously stored in the memory of the reading apparatus 500; Have memory.

The sliding force determination algorithm of the reading device 500 is converted through the signal conversion board of the reading device 500 when the sliding force is measured in earnest after the driving unit 300 such as the sliding force measurement by the initial wear is operated. Based on the received digital signal, the load value data corresponding to the sliding force of the workpiece 10 is obtained, and the acquired load value data and the reference data are compared and determined, and as a result of the sliding of the workpiece 10 It consists of a series of operational steps that display information on the display device 510 about the determination of the force's eligibility or ineligibility.

The reading device 500 and the control unit 110 are coupled via a corresponding connection cable to interlock with each other. Here, the interlocking operation of the reading device 500 and the control unit 110 means that when the control unit 110 performs a predetermined control operation, satisfies a predetermined condition value, or receives a predetermined command sequence input, the reading device ( 500 may be continuously operated such as reading load data or performing a sliding force determination algorithm.

For example, in a time period in which the control unit 110 operates the jig unit 200 or the driving unit 300, the interlocking control as the reading apparatus 500 is operated in accordance with a predetermined command sequence for the standby state. Means to be performed.

In addition, the interlocking operation of the reading device 500 and the control unit 110 may be performed by the control unit 110 to determine the load value data generated from the load cell unit 400 after the operation of the driving unit 300 and the load cell unit 400 is completed. The reading apparatus 500 allows the sliding force determination algorithm to be performed based on an input time point or by a command sequence.

Hereinafter, a detailed mechanical configuration of the present invention will be described.

Referring to FIG. 2, the reference plate 103 is horizontally disposed between the lower frame and the upper frame of the main body 100. The control switch block 120 is fixed by a block fixing box at a position that the operator's hand can easily reach from the front side of the reference plate 103.

The jig plate 201 of the jig part 200 is fixed to the upper surface of the reference plate 103.

As shown in FIG. 3, the jig plate 201 of the jig unit 200 has a pair of first clamping devices 210, a pair of second clamping devices 220, and a pair of slices from the right side to the left side. The ding-rail 230 is arranged.

The first clamp device 210 and the second clamp device 220 each include a plurality of pneumatic or hydraulic actuators 211, 218, 221, 228; A rotational link clause for converting the linear reciprocating operation of the ram axis of the actuators 211, 218, 221, and 228 into the rotary reciprocating operation within a finite angle; A plurality of mounts 240 and 250 erected on the jig plate 201 so that the cylinder casings of the actuators 211, 218, 221 and 228 are respectively disposed at the upper positions of the jig plate 201; The first mounting jig 219 and the second mounting jig 229 are respectively fixed to the upper center of the mount (240, 250).

The motor 310 of the driving unit 300 (eg, the servo motor capable of adjusting the rotation angle or the feed amount) is fixed to the upper surface of the jig plate 201 under the first clamp device 210. For example, the motor housing of the motor 310 may be fixed to the jig plate 201 by using the motor holder or the usual housing fixing means.

At this time, the axial direction of the rotation shaft 311 of the motor 310 is preferably made to match the direction of the center line passing in the transverse direction to the center of the jig plate 201.

'자형, 다리형(bridge shape), 육교형, 복수개의 다리로 지지되는 가로대형 중에서 선택된 어느 하나의 단면 형상을 갖는 제1장착대(240)인 것이 바람직하다.In order to secure a space in which the motor 310 may be disposed below the first clamping device 210, any one of the plurality of mounts 240 and 250 mounted on the jig plate 201 may have a short width '

It is preferable that the first mounting bracket 240 has any one cross-sectional shape selected from a 'shape, a bridge shape, an overpass type, and a crosspiece supported by a plurality of legs.

The first mounting table 240 serves to fix and support the cylinder casings of the actuators 211 and 218 arranged in pairs in the first clamp device 210, respectively.

The base portion of the first mounting bracket 240 is fixed to stand vertically on the jig plate 201.

'자형을 갖고, 타측(예 : 좌측)의 액추에이터용 날개부(242)는 '

'자형을 갖는 것이 바람직하다.The lower space 243 of the first mounting bracket 240 is used as a mounting space of the motor 310, and both sides of the first mounting bracket 240 serve as brackets for supporting an actuator of a pneumatic or hydraulic type. The parts 241 and 242 are fixed respectively. For example, the wing portion 241 for the actuator on one side (for example, the right side) is'

'Having the shape, the wing portion 242 for the actuator on the other side (for example, the left)

It is desirable to have a 'shape.

The cylinder casings of the actuators 211 and 218 are fixed to the bottom of the horizontal portion of each of the actuator mounting vanes 241 and 242, and the ram shafts 212 of the actuators 211 and 218 are respectively wing portions 241 and 242. ) Slidably engages in the corresponding through holes formed to penetrate in the vertical direction at each horizontal portion.

For example, as the ram shaft 212 on the left side linearly reciprocates in the axial direction according to the change in the pressure entry direction of the actuator 211, eventually serves to expand or reduce the entire shaft length of the actuator 211.

One end of the rotary link section 213 is coupled to the end of the ram shaft 212 on the left side. The other side of the rotary link device 213 is hingedly coupled to the horizontal portions of each of the actuator mounting vanes 241 and 242.

In this coupled state, the first clamp device 220 is a clamping arm 215 on the left side corresponding to the other side of the pivoting link section 213 by the pivoting hinge bar 214 of the pivoting link section 213. Can be reciprocated between an unclamped state in which the valve is opened to be inclined upwardly and a clamped state in which the clamp arm 215 is horizontally closed.

On the other hand, the ram shaft 216 on the right side also has the same coupling structure as the ram shaft 212 on the left side and its associated components.

Accordingly, the clamp arm 216 on the right side may perform the rotation reciprocating operation corresponding to the linear reciprocating operation of the actuator 218, respectively, similarly to the clamp arm 215 on the left side.

It is preferable that the left and right clamp arms 215 and 216 further form pressing protrusions 217 and 227, respectively, on the pressing surfaces thereof, for example, on the bottom of the opposite ends. The pressing protrusions 217 and 227 may be used for efficient compression fixing.

In addition, when the control unit controls each of the actuators 211 and 218 by a command sequence of the same timing, the left and right clamp arms 215 and 216 can simultaneously maintain an unclamped state or a clamped state, or predetermined It is possible to maintain an unclamped state or a clamped state sequentially by an instruction sequence of interval intervals.

At least when the clamp arms 215 and 216 are in the clamped state, the hinge bracket 12 of the workpiece 10 to be placed on the first seating jig 219 is pushed toward the first seating jig 219 and thus the workpiece 10 Only when the hinge bracket 12 of the) is clamped to the first mounting jig 219.

On the contrary, when the clamp arms 215 and 216 are unclamped, the workpiece 10 can be moved as the hinge bracket 12 is released from the first mounting jig 219.

'자형, 다리형(bridge shape), 육교형, 복수개의 다리로 지지되는 가로대형 중에서 선택된 어느 하나의 단면 형상을 갖는 제2장착대(250)인 것이 바람직하다.As shown in FIG. 5, in order to secure a space in which the transfer plate 320 can be horizontally moved between the lower side of the second clamp device 220 and the jig plate 201, a plurality of stand plates provided on the jig plate 201 are provided. One of the two mounts (240, 250)

It is preferable that the second mounting table 250 has any one cross-sectional shape selected from a 'shape, a bridge shape, an overpass type, and a crosspiece supported by a plurality of legs.

The second mounting table 250 serves to fix and support the cylinder casings of the actuators 221 and 228 arranged in pairs in the second clamp device 220, respectively.

In addition, the lower space 253 of the second mounting table 250 is used as a mounting space of the coupling plate associated with the transfer plate 320 and the load cell unit 400.

To this end, both side walls 251 of the second mounting stand 250 are vertically erected on the jig plate 201, and the refraction crosspiece 252 is disposed on the upper end of each of these side walls 251 in the horizontal direction. It is fixed.

The second seating jig 229 is fixed to the upper part of the refracted crossbar 252, and the actuators 221 are respectively disposed on the lower side of the refracting crossbar 252 based on the second seating jig 229. 228 is installed.

Here, it is preferable that a jig groove 229a is further formed at the center of the upper surface of the second seating jig 229 so as to seat a portion projecting downward between the body brackets 13 of the workpiece 10.

That is, the cylinder casings of the corresponding actuators 221 and 228 are fixed to the bottoms of the refracted lower portions positioned on both sides of the refraction crosspiece 252, respectively, and the ram shafts 222 of the actuators 221 and 228 are respectively vertically lowered from the lower and lower deflections. It is slidably coupled in the corresponding through hole formed to penetrate in the direction.

For example, the ram shaft 222 on the left side performs a linear reciprocating operation in the axial direction according to the change in the pressure entry direction of the actuator 221, and thus serves to expand or reduce the entire shaft length of the actuator 221.

One end of the rotary link section 223 is coupled to the end of the ram shaft 222 on the left side. And, the other side of the rotary link device 223 is hingedly coupled to each of the refraction lower portion of the refraction crosspiece 252.

In this coupled state, the second clamp device 220 is an unclamped state in which the clamp arm 225 is opened upwardly inclined upward by the pivoting hinge bar 224 of the pivotal link section 223, and the clamp arm ( It is possible to reciprocate between the clamped states in which 225 is leveled and closed.

On the other hand, the ram shaft 226 on the right side also has the same coupling structure as the ram shaft 222 on the left side and its associated components.

Accordingly, the clamp arm 226 on the right side may perform the rotation reciprocating operation corresponding to the linear reciprocating operation of the actuator 228, respectively, similarly to the clamp arm 225 on the left side.

In addition, the controller may maintain each of the actuators 221 and 228 in either an unclamped or clamped state by simultaneous operation or sequential operation by a command sequence of the same timing or a command sequence of a predetermined interval.

At least when the clamp arms 225, 226 are in the clamped state, the body bracket 13 of the workpiece 10 to be placed on the second seating jig 229 is pushed toward the second seating jig 229, resulting in the workpiece 10. Body bracket 13 is fixed to the second mounting jig 229.

On the contrary, when the clamp arms 225 and 226 are unclamped, the workpiece 10 can be moved as the body bracket 13 is released from the second mounting jig 229.

As shown in FIG. 6, the load cell unit 400 includes a load cell mount 410 vertically mounted on the transfer plate 320; A load cell 420 coupled to receive a pressing force f in a horizontal direction from an upper end of the load cell mount 410; A clasp 430 closely coupled with the load cell 420 on the opposite side of the pressing force direction, and the connection ring 14 of the wheel shaft 16 of the workpiece 10 to be seated on the top of the clasp 430 It is preferable that the ring seating groove 431 can be formed.

The driver 300 has a motor 310 that generates a rotational force in a state supported by the jig plate 201.

The rotating shaft of the motor 310 is coupled to transmit the rotational force of the motor 310 to the screw shaft 340 through the shaft coupler 330.

The screw shaft 340 is fastened so as to be axially rotated horizontally in the jig plate 201 by the bearing blocks 341 and 342.

In addition, the screw shaft 340 is coupled to the ball screw 350 to have a transfer treatment relationship.

The ball screw casing of the ball screw 350 is fixed to the center of the bottom surface of the transfer plate 320. A plurality of linearly movable guide blocks 360 are coupled to the bottom of the transfer plate 320 based on the bottom corners of the transfer plates 320.

3, 5 and 6, the guide block 360 is slidably coupled along a rail direction in a pair of guide rails 230 arranged on the jig plate 201.

Therefore, the rotational force of the motor 310 becomes a conveying force capable of conveying the conveying plate 320 in the rail direction of the guide rail 230 by the screw shaft 340 and the ball screw 350.

The transfer plate 320 horizontally moved using such a transfer force is a ring seating groove 431 of the load cell mount 410, the load cell 420, the clasp 430, and the clasp 430 of the load cell unit 400. It moves horizontally within the finite stroke distance s as if it pushes the connecting ring 14 of the wheel shaft 16 of the workpiece 10 seated on

In this process, the wheel shaft 16 of the workpiece 10 is slid from the column housing portion 15 to protrude and the sliding force such as the repulsive force for the horizontal movement is confirmed.

Since the sliding force is the same as the pressing force f corresponding to the horizontal movement of the load cell 420, the pressing force f which is eventually detected by the load cell 420 can be measured in the present invention as the sliding force of the workpiece 10. have.

The sliding force thus measured may be input to the reading apparatus 500 described above.

In addition, the horizontal movement within the finite stroke distance s of the transfer plate 320 is controlled by a plurality of motion detection sensors 325 arranged on the jig plate 201.

Referring to FIG. 3 or FIG. 5, a sensor sensing protrusion 326 is installed at an outer side of the guide block 360, and the sensor sensing protrusion 326 is simultaneously with the guide block 360 and the transfer plate 320. Is moved horizontally.

Since the plurality of motion detection sensors 325 are arranged on the jig plate 201 under the copper wire of the sensor detection protrusion 326, the sensor detection protrusion 326 detects the position of the sensor detection protrusion 326 and inputs the same to the controller. By allowing the controller to calculate the moving distance of the transfer plate 320, the control operation corresponding to the start point, the stop point, the moving distance, and the like of the transfer plate 320 is performed.

Hereinafter, an operation method and a measuring method of the sliding force measuring system of the present invention will be described.

The measuring method corresponding to the operating method of the sliding force measuring system of the present invention performs the initial wear once to wear the workpiece before the initial measurement, and when the sliding force of the workpiece is actually measured, the conveying plate is moved forward and backward by the driving unit. At the time, load value data is respectively measured by the load cell part provided between the drive part and the workpiece | work.

Let's take a look at the details of these measurement methods.

First, a workpiece loading step of mounting the workpiece 10 on the jig unit 200 is performed.

In such a case, the hinge bracket 12 and the body bracket 13 of the workpiece 10 are seated on the first and second seating jigs 219 and 229, respectively, and the wheel shaft 16 of the workpiece 10 is connected. The ring 14 is fitted into the ring seating groove 431 of the clasp 430.

Subsequently, when the test start signal is input to the controller 110 by the test start button of the control switch block 120, the controller 110 controls the actuators 211, 218, of the first and second clamp devices 210 and 220. The clamp step of actuating the 221, 228 so that the clamp arms 215, 216, 225, 226, which have received the operating force of the actuators 211, 218, 221, 228, secures the workpiece 10 in the clamped state. Performed by the controller 110.

The controller 110 performs an initial wear operation step of controlling the transfer plate 320 to primarily perform one reciprocating horizontal movement within the stroke distance s for initial wear.

In the initial wear operation phase, the motor 310 rotates and stops its rotary shaft, shaft coupler 330 and screw shaft 340 by the amount of rotation corresponding to one reciprocating horizontal movement of the transfer plate 320.

For example, at the start of the stroke distance s, the motor 320 performs the forward rotation operation for a finite time so that the transfer plate 320 reaches the end of the stroke distance s. When detected by the sensing sensor 325, a reverse rotation operation is performed to stop the rotating shaft when returning to the starting point of the stroke distance s.

One reciprocating horizontal movement for this initial wear results in initial wear of the fine motion between the clamp arms 215, 216, 225, 226 and the workpiece 10, resulting in clamp arms 215, 216, 225, 226 allows the workpiece 10 to be more firmly fixed.

Subsequently, the controller 110 controls the motor 310 in the same manner as described above to calculate data corresponding to actual measurement of the sliding force of the workpiece, so that the transfer plate 320 is once within the stroke distance s. As the control is performed to perform the reciprocating horizontal movement secondarily, a data calculation step of acquiring load value data is performed at the time of moving forward and backward of the transfer plate 320.

That is, in the data calculation step, the load cell 420 of the load cell unit 400 transfers a sliding force without an error due to sliding between the clamp arms 215, 216, 225, and 226 and the workpiece 10. Are measured at the time of forward and reverse, respectively, and the load value data corresponding to the sliding force is transmitted to the reading device 500.

The reading device 500 compares and judges the load value data received from the load cell 420 of the load cell unit 400 with reference data stored in the memory of the reading device 500 in advance, so that at least the work 10 A determination step of determining the eligibility and ineligibility of the sliding force is performed.

For example, the reading apparatus 500 makes a determination of eligibility when the received load value data is included in the allowable range of the reference data, and makes an ineligibility determination when the reading device 500 is out of the allowable range, and displays the determination result on the display apparatus 510.

Subsequently, the actuators 211, 218, 221, of the first and second clamp devices 210 and 220 are controlled by operation of the controller 110 corresponding to the stop signal of the emergency stop button or the next command sequence after the sliding force determination. 228 is operated in reverse, resulting in an unclamping step where the clamp arms 215, 216, 225, 226 return to an unclamped state where the workpiece 10 can be released.

As described above, in the present invention as described above, the sliding force measurement system and measuring method including a jig part, a driving part, and a load cell part can accurately measure the sliding force of the corresponding automotive part, and can automate the quality determination of the corresponding automotive part. Has the effect of providing.

In addition, the sliding force measuring system of the present invention has the advantage of measuring the precise sliding force without the error due to the sliding between the clamp arm and the workpiece according to the sliding force after one reciprocating horizontal movement for the initial wear. .

In addition, the sliding force measuring method of the present invention has the effect of reducing the reliability and measurement cycle time of the measurement value by performing the automatic measurement as a facility for measuring the assembly, such as a lower tilt telescopic column assembly.

In addition, the preferred embodiment of the present invention is disclosed for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (9)

In the sliding force measuring system for measuring the sliding force of the workpiece, A jig portion for supporting the one side of the workpiece; A driving part having a conveying plate for extending or stretching the other part of the workpiece having one part fixed by the jig part; A load cell unit disposed on the transfer plate and disposing a load cell between the other side portion and the transfer plate to measure a sliding force of a workpiece when the driving unit is driven; And a reading device which collects and reads load value data corresponding to the sliding force from the load cell unit. The method of claim 1, The main body, Sliding force measurement system further comprises a control unit standing vertically in the lower support extending from the base shaft of the lower frame, behind the lower frame of the main body. The method of claim 1, The jig portion, A jig plate fixed to the reference plate of the main body; A pair of first clamp devices erected vertically on one side of the jig plate; Linear reciprocating about the ram axis of the actuator provided in the first clamp device and the second clamp device, respectively, including a pair of second clamp devices vertically mounted on the other side of the jig plate while being spaced apart from the first clamp device. A pivot link section, a pivoting hinge bar and a clamp arm are coupled to the ramshaft to convert the motion into a pivotal reciprocating motion, and the cylinder casing of the actuator is disposed on an upper position of the jig plate, respectively. A plurality of mounting stands; Sliding force measuring system comprising a first seating jig and a second seating jig fixed for each of the plurality of mounting. The method of claim 4, wherein The mount, Short

'Long, long'

'Has a cross-sectional shape selected from the shape of the legs, legs, pedestrian bridge, a plurality of legs, for the installation of the actuator'

'Or' or '

Sliding force measurement system, characterized in that it further comprises a wing of the shape selected from the shape. The method of claim 1, The driving unit, A motor having a motor housing fixed to the jig plate; A screw shaft coupled to the rotary shaft of the motor with a shaft coupler and capable of shaft rotation from the jig plate to a bearing block; A ball screw coupled to the screw shaft to have a transfer treatment relationship and fixed to a bottom surface of the transfer plate by a ball screw casing on the transfer plate; A plurality of guide rails arranged on the jig plate; A guide block slidably coupled to the guide rail to support the transfer plate; A sensor detecting protrusion installed at an outer side of the guide block; And a motion detection sensor arranged as a plurality on the jig plate below the copper wire of the sensor detection protrusion. The method of claim 1, The load cell unit, A load cell mount stand vertically on the transfer plate; A load cell coupled to receive a pressing force in a horizontal direction from an upper end of the load cell mount; Sliding force measurement system comprising a latch portion coupled to the load cell in the opposite direction of the pressing force, the ring seating groove for mounting the connection ring of the wheel shaft of the workpiece on the upper end of the latch portion. In the sliding force measuring method comprising a workpiece loading step for seating the workpiece in the jig, Perform initial wear to wear the workpiece once before the initial measurement, and when the sliding force of the workpiece is actually measured, when the transfer plate is moved forward and backward by the drive unit, the load value is set by the load cell unit installed between the drive unit and the workpiece. Sliding force measurement method characterized in that to measure the data, respectively. The method of claim 7, wherein After the workpiece loading step, the control unit, A clamp step of actuating the actuators of the first and second clamping apparatuses, the clamp arm receiving the actuation force of the actuators to fix the workpiece in a clamped state; An initial wear operation step of controlling the transfer plate to primarily perform one reciprocating horizontal movement within the stroke distance for initial wear; In order to calculate the data corresponding to the actual measurement of the sliding force of the workpiece, the motor is controlled to control the transfer plate to perform the reciprocating horizontal movement once within the stroke distance, while the transfer plate moves forward and backward. A data calculation step of acquiring load value data at each; And the actuators of the first and second clamp devices are operated in reverse, thereby performing an unclamping step in which the clamp arms return to an unclamped state capable of releasing the workpiece. The method of claim 8, Between the data calculation step and the unclamp step, a reading device, And comparing and determining load value data received from the load cell of the load cell unit with reference data stored in the memory of the reading device in advance, further performing a determination step of determining the eligibility and ineligibility of the sliding force of the workpiece. Force measurement method.

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