Measurement system for abrasion profile of brake disk

Abstract

A wear profile measurement system for a brake disc includes a base frame, a vertical frame, a transfer frame, a transfer module, and a sensor unit. The vertical frame includes a connecting frame positioned vertically to the base frame, and upper and lower frames extending parallel to each other from the connecting frame to form a fixed space in the center. The transfer frame includes upper and lower transfer frames that are transferred on the upper and lower frames, and a central frame connecting the upper and lower transfer frames. The transfer module provides a transfer force to the transfer frame. The sensor unit is fixed to at least one of the upper and lower transfer frames and measures the distance to the surface of a test specimen.

Description

Technology Field

[0001] The present invention relates to a wear profile measurement system, and more specifically, to a wear profile measurement system for a brake disc that measures the wear profile of a test specimen, such as a brake disc, in a non-contact manner, and enables the correction of initial positional errors through alignment correction of a pair of sensors, thereby enabling more accurate measurement of the wear profile. Background Technology

[0002] Generally, brake discs serve to decelerate or stop a vehicle through friction with a friction material. During this braking process, wear occurs on the friction surface of the brake disc, and over time, the unevenness of the friction surface leads to grinding operations on the surface of the brake disc. Additionally, separate regulations are established to ensure that the amount of wear on the brake disc is maintained within a specified standard value.

[0003] Conventionally, when measuring the wear of such brake discs, it is common practice to measure the wear at the same point before and after the test using an outer diameter micrometer; however, this method had a problem in that the amount of wear was measured differently depending on the measurement location due to uneven wear on the surface of the brake disc.

[0004] In other words, significant errors occurred depending on the selection of the measurement location and the measurement method when measuring brake discs, and there were limitations in achieving precise measurements due to errors resulting from discrepancies in measurement locations before and after the test; additionally, when using a micrometer, there was the difficulty of maintaining the micrometer perpendicular to the surface of the brake disc.

[0005] To address these issues, technologies for measuring disc wear using non-contact measurement methods, such as Japanese Registered Patent No. 6352987, are being developed; however, there are still limitations in measuring brake disc wear with precision and accuracy. Prior art literature

[0006] Japanese Registered Patent No. 6352987 The problem to be solved

[0007] Accordingly, the technical problem of the present invention is conceived from this point, and the objective of the present invention is to provide a wear profile measurement system for a brake disc that measures the wear profile of a test specimen, such as a brake disc, in a non-contact manner, and enables the correction of initial positional errors through alignment correction of a pair of sensors, thereby allowing for more accurate measurement of the wear profile. means of solving the problem

[0008] A wear profile measuring system according to one embodiment for realizing the purpose of the present invention described above comprises a base frame, a vertical frame, a transfer frame, a transfer module, and a sensor unit. The vertical frame comprises a connecting frame positioned vertically to the base frame, and upper and lower frames extending parallel to each other from the connecting frame to form a fixed space in the center. The transfer frame comprises upper and lower transfer frames transferred on the upper and lower frames, and a central frame connecting the upper and lower transfer frames. The transfer module provides a transfer force to the transfer frame. The sensor unit is fixed to at least one of the upper and lower transfer frames and measures the distance to the surface of a test specimen.

[0009] In one embodiment, the test specimen may be positioned parallel to the base frame on the fixed space.

[0010] In one embodiment, the test piece is a braking disc, and the sensor part may be a laser sensor that measures the distance to the upper or lower surface of the braking disc.

[0011] In one embodiment, the sensor unit includes a first sensor fixed to the upper transfer frame and a second sensor fixed to the lower transfer frame, wherein the first sensor measures the distance to the upper surface of the test specimen and the second sensor measures the distance to the lower surface of the test specimen.

[0012] In one embodiment, a control unit may be further included to correct the initial position of the distance to the upper surface measured by the first sensor and the initial position of the distance to the lower surface measured by the second sensor to be the same as each other.

[0013] In one embodiment, the control unit can obtain wear profile information of the upper and lower surfaces of the test specimen and thickness profile information of the test specimen based on the measurement results of the first sensor and the second sensor after correcting the initial position by the control unit.

[0014] In one embodiment, the transfer frame is transferred integrally on the vertical frame, and the upper frame may have an upper guide formed thereon on which an upper transfer part provided on the upper transfer frame slides, and the lower frame may have a lower guide formed thereon on which a lower transfer part provided on the lower transfer frame slides.

[0015] In one embodiment, the transfer module may include a drive unit that provides rotational driving force, a fixed block fixed to the connecting frame, a transfer block fixed to the central frame and transferred together with the central frame, and a transfer bar that extends from the drive unit through the fixed block and the transfer block and is fixed to a fixed unit whose end is located on the connecting frame.

[0016] In one embodiment, as the driving unit provides rotational driving force, the transfer block is transferred along the transfer bar, and the transfer frame can be transferred according to the transfer of the transfer block.

[0017] In one embodiment, the transfer distance of the transfer block can be sensed based on the initial position of the transfer block and the amount of rotation of the drive unit.

[0018] In one embodiment, a support block may be further included that is fixed on the base frame and fixes the test specimen so that the test specimen is positioned on the upper surface.

[0019] In one embodiment, the support block may have a cylindrical shape in which an opening is formed from the outer surface to the center so that the lower frame is inserted and positioned. Effects of the invention

[0020] According to embodiments of the present invention, a sensor unit is provided on at least one of the upper and lower transfer frames to measure the distance to the surface of the test specimen, and in particular, since the sensor unit is transferred in a direction parallel to the surface of the test specimen and measures the distance, the wear profile of the surface of the test specimen can be measured uniformly, accurately, and precisely.

[0021] In this case, if a sensor unit is provided on each of the upper and lower transfer frames, the surface wear profiles of the upper and lower surfaces of the test specimen can be measured simultaneously, thereby reducing the measurement time and allowing for immediate comparison of the upper and lower surface wear conditions.

[0022] In addition, the wear condition of the upper and lower surfaces, as well as the profile of the thickness of the test specimen, can be obtained immediately, thereby improving the efficiency of evaluation and testing by acquiring various condition information of the test specimen.

[0023] In particular, the distance to the upper and lower surfaces is measured, and if the starting positions are different, the information regarding the thickness can be obtained more accurately by correcting them to be the same.

[0024] Furthermore, when measuring the profiles of the upper and lower surfaces of such a test specimen, if the test specimen is a brake disc, stable support of the brake disc can be performed through a support block by considering the size, weight, or shape of the brake disc, and by designing a vertical frame, a transfer frame, and a transfer module by considering that the brake disc is most stable when positioned horizontally on the ground, ease of manufacturing, convenience of testing, and repeatability can be further improved. Brief explanation of the drawing

[0025] FIG. 1 is a perspective view illustrating a wear profile measurement system according to one embodiment of the present invention. FIG. 2 is a perspective view showing the measurement system of FIG. 1 from a different direction. Figure 3 is a perspective view illustrating the state of measuring the wear profile of a brake disc by the measurement system of Figure 1. Figure 4 is a simplified schematic diagram of the measurement state of Figure 3. Figures 5a and 5b are measurement results showing the upper and lower wear profiles and the brake disc thickness profile when no correction is performed in the measurement of the wear profile using the measurement system of Figure 1. Figures 6a and 6b are measurement results showing the upper and lower wear profiles and the brake disc thickness profile when correction is performed in the measurement of the wear profile using the measurement system of Figure 1. Specific details for implementing the invention

[0026] The present invention is susceptible to various modifications and may take various forms, and embodiments are to be described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each figure. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms.

[0027] The above terms are used solely for the purpose of distinguishing one component from another. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0028] In this application, terms such as "comprising" or "consisting of" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0030] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings.

[0031] FIG. 1 is a perspective view illustrating a wear profile measurement system according to one embodiment of the present invention. FIG. 2 is a perspective view illustrating the measurement system of FIG. 1 from a different direction.

[0032] Referring to FIGS. 1 and 2, the wear profile measuring system (10, hereinafter referred to as the measuring system) according to the present embodiment includes a base frame (100), a vertical frame (200), a transfer frame (300), a sensor unit (400), a transfer module (500), a support block (600), and a control unit (700).

[0033] The base frame (100) forms the base of the measurement system (10) and may be a flat surface of a predetermined area so as to be positioned on the ground, etc. That is, the base frame (100) may be a flat surface extending along the XY plane as shown in FIG. 1.

[0034] The vertical frame (200) extends along a third direction (Z) perpendicular to the base frame (100) and includes a connecting frame (210), an upper frame (220), and a lower frame (230).

[0035] The above connecting frame (210) has a predetermined area and may be a plane extending along the ZX plane, the upper frame (220) extends along a first direction (X) from one side of the upper part of the connecting frame (210), and the lower frame (230) extends along a first direction (X) from one side of the lower part of the connecting frame (210).

[0036] Thus, the upper frame (220) and the lower frame (230) can be extended parallel to each other. Accordingly, the vertical frame (200) can have an overall 'U' shape.

[0037] And, a fixed space (240) is formed between the upper frame (220) and the lower frame (230), and a test fan (20), which will be described later, is located in the fixed space (240).

[0038] In this case, the lower frame (230) may be extended along the first direction (X) on the base frame (100).

[0039] Meanwhile, an upper guide (221) is formed on one surface of the upper frame (220) that follows a second direction (Y) perpendicular to the first direction (X), and likewise, a lower guide (231) is formed on one surface of the lower frame (230) that follows a second direction (Y) perpendicular to the first direction (X).

[0040] The upper guide (221) and the lower guide (231) are extended by a predetermined length along the first direction (X) and correspond to a sliding guide through which the upper transfer part (322) and the lower transfer part (332), described later, slide.

[0041] On the upper surface of the upper frame (220), at least one fixing unit (260) is provided, and the fixing unit (260) can fix the transfer frame (300) at a predetermined position by selectively fixing the upper transfer frame (320) described later.

[0042] Additionally, among the upper frames (220), a fixing part (250) is formed on the connecting frame (210) in a block shape, protruding along the second direction (Y). The fixing part (250) is a block that is fixed to the connecting frame (210) and whose position is not variable, and the end of the transfer bar (550), which will be described later, is fixed thereto.

[0043] The above transfer frame (300) is a frame that moves along the first direction (X) on the vertical frame (200), and may have an overall 'U' shape similar to the vertical frame (200).

[0044] That is, the above transfer frame (300) includes a central frame (310), an upper transfer frame (320), and a lower transfer frame (330).

[0045] In this case, the central frame (310) is extended along the third direction (X), the upper transfer frame (320) is extended along the first direction (X) from the upper part of the central frame (310), and the lower transfer frame (330) is extended along the first direction (X) from the lower part of the central frame (310).

[0046] Thus, the upper transfer frame (320) and the lower transfer frame (330) are extended parallel to each other.

[0047] At this time, the upper transfer frame (320) extends along the upper frame (220), and an upper transfer section (322) is formed on the surface of the upper transfer frame (320) facing the upper frame (220).

[0048] In this case, the upper transfer unit (322) is coupled with an upper guide (221) formed on the upper frame (220) and slides along the upper guide (221). That is, the upper transfer unit (322) can be reciprocated along the upper guide (221) in the first direction (X), and accordingly, the upper transfer frame (320) can also be reciprocated in the first direction (X).

[0049] Likewise, the lower transfer frame (330) extends along the lower frame (230), and a lower transfer section (332) is formed on the surface of the lower transfer frame (330) facing the lower frame (230).

[0050] In this case, the lower transfer unit (332) is coupled with a lower guide (231) formed on the lower frame (230) and slides along the lower guide (231). That is, the lower transfer unit (332) can be reciprocated along the lower guide (231) in the first direction (X), and accordingly, the lower transfer frame (330) can also be reciprocated in the first direction (X).

[0051] Meanwhile, in the upper transfer frame (320), an upper sensor block (321) is formed on the opposite side from the side where the upper transfer part (322) is fixed, and the sensor part (400) is fixed on the upper sensor block (321).

[0052] Likewise, in the lower transfer frame (330), a lower sensor block (331) is formed on the side opposite to the side where the lower transfer part (332) is fixed, and the sensor part (400) is fixed on the lower sensor block (331). In this case, although it is shown that the sensor part (400) is not fixed on the lower sensor block (331), the sensor part (400) may or may not be fixed on the lower sensor block (331).

[0053] That is, the sensor unit (400) may have one sensor selectively fixed to either the upper sensor block (321) or the lower sensor block (331), or alternatively, two sensors may be fixed to both the upper sensor block (321) and the lower sensor block (331).

[0054] In this case, the sensor unit (400) can measure the distance to the surface of the test specimen (20) located on the fixed space (240) in a non-contact manner, for example, as a laser sensor. The measurement of the test specimen (20) will be described later.

[0055] The above transfer module (500) reciprocates the transfer frame (300) in the first direction (X) and includes a drive generating unit (510), a drive unit (520), a fixed block (530), a transfer block (540), and a transfer bar (550).

[0056] The above-mentioned drive generating unit (510) generates a driving force and, for example, may be a motor that generates rotational driving force.

[0057] The above drive unit (520) substantially provides rotational driving force to the above transfer frame (300), and the driving force generated from the above drive generation unit (510) can be transmitted to the above drive unit (520) through the drive transmission unit (511). In this case, the above drive transmission unit (511) may be a belt, etc., but is not limited thereto.

[0058] Alternatively, the above-mentioned drive generation unit (510) may be omitted, and the above-mentioned drive unit (520) may be a motor that generates rotational driving force, and such drive generation or transmission mechanism may be designed and modified in various ways.

[0059] One end of the transfer bar (550) is connected to the drive unit (520), and the other end can be fixed to the fixed unit (250) as previously described. Thus, rotational driving force is transmitted to the transfer bar (550) according to the rotation of the drive unit (520).

[0060] The above fixed block (530) is fixed on the connecting frame (210), and the transfer bar (550) extends through it.

[0061] Meanwhile, although not described in detail, a rotary drive motor that generates the rotary driving force of the drive unit (520) may be provided on the fixed block (530). If the rotary drive motor is provided on the fixed block (530) in this manner, the drive generating unit (510) does not generate drive, and rather, the rotary driving force may be provided to the drive generating unit (510) through the drive unit (520) via the drive transmission unit (511).

[0062] However, as previously explained, such a drive generation and transmission mechanism can be designed to be varied in many ways, and it is sufficient if rotational driving force is finally transmitted to the transfer bar (550).

[0063] The transfer block (540) is penetrated by the transfer bar (550), and the transfer block (540) is fixed on the central frame (310).

[0064] Thus, by the rotational driving force provided by the transfer bar (550), the transfer block (540) reciprocates in the first direction (X) on the transfer bar (550). To this end, although not illustrated, the transfer block (540) may be equipped with a drive conversion unit that converts rotational driving into linear driving.

[0065] That is, the transfer bar (550) rotates by the rotational driving force through the drive unit (520), and the rotation of the transfer bar (550) induces linear driving of the transfer block (540) by the drive conversion unit of the transfer block (540).

[0066] Thus, the transfer block (540) is reciprocated along the first direction (X) on the transfer bar (550), and through this, the transfer frame (300) is also reciprocated along the first direction (X).

[0067] In contrast, the transfer bar (550) may not perform a separate rotational movement and may simply serve as a guide for the reciprocating movement of the transfer block (540). That is, the drive conversion unit inside the transfer block (540) rotates by the rotational driving force of the drive unit (520), and the transfer block (540) may reciprocate along the transfer bar (550) in the first direction (X) by this rotational driving.

[0068] Meanwhile, the drive conversion mechanism in which such rotational driving force is converted so that the transfer block (540) moves in a linear motion can be designed in various ways, and ultimately, it is sufficient for the transfer block (540) to be reciprocated in the first direction (X) on the transfer bar (550).

[0069] Furthermore, although not shown in the illustration, an encoder is provided on the transfer block (540) or the fixed block (530) to obtain information regarding the transfer distance of the transfer block (540). That is, as previously explained, since rotational motion is converted into linear motion by the drive conversion unit, the amount of rotational motion is measured through the encoder, thereby accurately obtaining the amount of motion moving in a straight line, i.e., the transfer distance information.

[0070] Furthermore, since the initial position information of the transfer block (540) can also be obtained, the repetitive measurement of the test specimen (20) can be performed based on the same initial position based on the initial position information of the transfer block (540), thereby improving the reproducibility of the measurement.

[0071] The control unit (700) generally controls the transfer of the transfer frame (300), for example, by controlling the operation of the transfer module (500) to control the transfer and stop of the transfer block (540). In addition, it can receive transfer information and initial position information of the transfer block (540).

[0072] Furthermore, the control unit (700) can control the operation of the sensor unit (400) and receive data sensed through the sensor unit (400), that is, distance information to the surface of the test piece (20).

[0073] Thus, the control unit (700) can perform information processing based on the acquired information to obtain necessary data, for example, information on the wear profile of the surface of the test specimen (20) or the thickness of the test specimen (20).

[0074] Meanwhile, as will be described later, the control unit (700) may perform a correction on the initial positions of the upper and lower surfaces of the test specimen (20) when the sensor unit (400) measures the upper and lower surfaces respectively, thereby correcting the initial positions of the upper and lower surfaces to be the same.

[0075] Figure 3 is a perspective view illustrating the state of measuring the wear profile of a brake disc by the measurement system of Figure 1.

[0076] Referring to FIG. 3, first, the support block (600) is positioned adjacent to the base frame (100). For example, as shown in FIG. 1, when the base frame (100) forms a fixed surface (101), the outer surface of the support block (600) may be positioned in contact with the fixed surface (101).

[0077] In this case, the support block (600) has, for example, a cylinder shape, and since the outer surface of the support block (600) has a cylindrical shape, the fixed surface (101) can also be formed to have a concave cylindrical shape.

[0078] Thus, the support block (600) is positioned in close contact with the base frame (100), and its position can be stably fixed.

[0079] However, since a lower frame (230) extending in the first direction (X) is formed on the base frame (100), the position of the support block (600) must be fixed without interfering with the lower frame (230).

[0080] Accordingly, as shown in FIG. 3, the support block (600) has an opening (610) formed that is recessed from one outer surface to the center, and the lower frame (230) is extended and positioned inside the opening (610). Thus, the support block (600) can be positioned on the fixed space (240) without interfering with the lower frame (230).

[0081] The test specimen (20) is positioned on the upper surface of the support block (600), and accordingly, the test specimen (20) is positioned on the fixed space (240).

[0082] In particular, if the test specimen (20) is a brake disc of a railway vehicle, as illustrated, it is positioned on the upper surface of the support block (600) so that the surface condition of the upper and lower surfaces of the brake disc can be measured.

[0083] That is, by forming the diameter of the support block (600) to be slightly larger than the diameter of the opening in the center of the brake disc, the support block (600) not only stably fixes the brake disc, but also maintains that the braking surface of the brake disc and the support block (600) do not come into contact with each other, thereby allowing both the upper and lower surfaces of the braking surface of the brake disc to be easily measured using the sensor unit (400).

[0084] Figure 4 is a simplified schematic diagram of the measurement state of Figure 3.

[0085] In FIG. 3, when the braking disc is positioned on the fixed space (240) as the test piece (20), the sensor part (400, referred to as the first sensor (410)) fixed to the upper transfer frame (320) and the sensor part (400, referred to as the second sensor (420)) fixed to the lower transfer frame (330) can be schematically represented as in FIG. 4.

[0086] That is, referring to FIG. 4, the first sensor (410) measures the distance to the upper surface (21) of the braking disc (20), and the second sensor (420) measures the distance to the lower surface (22) of the braking disc (20).

[0087] In this way, by measuring the distance to the upper surface (21) or lower surface (22) of the braking disc (20), the wear profile of the upper surface (21) or lower surface (22) of the braking disc (20) can be obtained, and information regarding the thickness of the braking disc (20) can also be obtained based on the difference in the relative wear profiles of the upper surface (21) and lower surface (22).

[0088] More specifically, a wear profile for the thickness of the braking disc (20). It can be calculated using the following formula (1).

[0089] Equation (1)

[0090] At this time, is the distance value between the first sensor (410) and the second sensor (420), and is a distance value from the first sensor (410) to the upper surface (21) of the braking disc (20), and is the distance value from the second sensor (420) to the lower surface (22) of the braking disc (20).

[0091] also, is the measurable limit distance value of the first sensor (410), and is the measurable limit distance value of the second sensor (420). And, is a wear profile for the upper part of the braking disc (20), and This is a profile of the lower part of the above braking disc (20).

[0092] That is, as described above, information regarding the thickness of the braking disc (20) can be obtained based on the upper and lower profile information of the braking disc (20) from the above equation (1).

[0093] Figures 5a and 5b are measurement results showing the upper and lower wear profiles and the brake disc thickness profile when no correction is performed in the measurement of the wear profile using the measurement system of Figure 1.

[0094] Referring to FIG. 5a, in the measurement results for the upper profile and lower profile of the braking disc (20) using the measurement system (10) of FIG. 1, it can be confirmed that the upper profile and the lower profile have different starting positions (A).

[0095] That is, the first and second sensors (410, 420) of the measurement system (10) may include an alignment error in the third direction (Z). Accordingly, due to this alignment error in the third direction (Z), the initial measurement positions of the profiles of the upper surface (21) and lower surface (22) of the braking disc (20) measured by the first and second sensors (410, 420) may differ from each other.

[0096] Meanwhile, if the initial measurement positions of the profiles of the upper surface (21) and lower surface (22) of the braking disc (20), measured by the first and second sensors (410, 420) as described above, are different from each other, the information regarding the thickness profile of the braking disc (20) is less accurate and reliable, as shown in FIG. 5b.

[0097] Accordingly, in this embodiment, the control unit (700) controls the initial measurement positions of the upper surface (21) and lower surface (22) of the braking disc (20), measured by the first sensor (410) and the second sensor (420), to coincide with each other.

[0098] That is, the control unit (700) performs a correction in the program based on the measurement results for the initial measurement positions of the first sensor (410) and the second sensor (420) so that the measurement result for the initial position of either the first sensor (410) or the second sensor (420) matches the measurement result for the other initial position.

[0099] Figures 6a and 6b are measurement results showing the upper and lower wear profiles and the brake disc thickness profile when correction is performed in the measurement of the wear profile using the measurement system of Figure 1.

[0100] That is, as illustrated in FIG. 6a, as a result of the control unit (700) correcting the measurement result for the initial position of either the first sensor (410) or the second sensor (420) in a program to match the measurement result for the other initial position, the initial measurement positions (B) of the profiles of the upper surface (21) and lower surface (22) of the braking disc (20) measured by the first and second sensors (410, 420) match each other.

[0101] In this case, as illustrated in FIG. 6a, when measuring the wear profile for the upper surface (21) and lower surface (22) of the actual braking disc (20), the result of the wear profile measured at the location where the upper surface (21) or lower surface (22) of the braking disc (20) begins increases rapidly.

[0102] Therefore, the point at which the result value measured by the first sensor (410) begins to increase and the point at which the result value measured by the second sensor (420) begins to increase can be very easily matched with each other. In particular, this matching of starting points can be sufficiently corrected through a program driven by the control unit (700).

[0103] That is, as in the present embodiment, even if the first sensor (410) and the second sensor (420) are designed to be transported together along the first direction (X), the starting points can be easily corrected using the control unit (700) through the characteristics of the measurement data of the wear profile of the braking disc (20).

[0104] Furthermore, as described above, when the initial measurement positions (B) of the profiles of the upper surface (21) and lower surface (22) of the braking disc (20) coincide with each other, as shown in FIG. 6b, information regarding the thickness profile of the braking disc (20) can also be obtained through the above equation (1), and the reliability and accuracy of the information obtained in this way are increased.

[0105] According to the embodiments of the present invention as described above, a sensor unit is provided on at least one of the upper and lower transfer frames to measure the distance to the surface of the test specimen, and in particular, since the sensor unit is transferred in a direction parallel to the surface of the test specimen and measures the distance, the wear profile of the surface of the test specimen can be measured uniformly, accurately, and precisely.

[0106] In this case, if a sensor unit is provided on each of the upper and lower transfer frames, the surface wear profiles of the upper and lower surfaces of the test specimen can be measured simultaneously, thereby reducing the measurement time and allowing for immediate comparison of the upper and lower surface wear conditions.

[0107] In addition, the wear condition of the upper and lower surfaces, as well as the profile of the thickness of the test specimen, can be obtained immediately, thereby improving the efficiency of evaluation and testing by acquiring various condition information of the test specimen.

[0108] In particular, the distance to the upper and lower surfaces is measured, and if the starting positions are different, the information regarding the thickness can be obtained more accurately by correcting them to be the same.

[0109] Furthermore, when measuring the profiles of the upper and lower surfaces of such a test specimen, if the test specimen is a brake disc, stable support of the brake disc can be performed through a support block by considering the size, weight, or shape of the brake disc, and by designing a vertical frame, a transfer frame, and a transfer module by considering that the brake disc is most stable when positioned horizontally on the ground, ease of manufacturing, convenience of testing, and repeatability can be further improved.

[0110] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as set forth in the following claims. Explanation of the symbols

[0111] 10: Wear profile measurement system 20: Test specimen (brake disc) 100 : Base frame 200 : Vertical frame 210: Connecting frame 220: Upper frame 230 : Lower frame 240 : Fixing space 250 : Fixed part 300 : Transfer frame 310: Central frame 320: Upper transfer frame 330 : Lower transfer frame 400 : Sensor unit 500 : Transfer module 510 : Drive generation unit 520 : Driving unit 530 : Fixed block 540 : Transfer block 550 : Transfer bar 600 : Support block 700 : Control unit

Claims

Claim 1 A base frame; a vertical frame comprising a connecting frame positioned vertically on the base frame, and upper and lower frames extending parallel to each other from the connecting frame to form a fixed space in the center; a transfer frame comprising upper and lower transfer frames transferred on the upper and lower frames, and a central frame connecting the upper and lower transfer frames; a transfer module providing a transfer force to the transfer frame; a sensor unit fixed to at least one of the upper and lower transfer frames to measure the distance to the surface of a test specimen; and a control unit;The sensor unit includes a first sensor fixed to the upper transfer frame and a second sensor fixed to the lower transfer frame, wherein the first sensor measures the distance to the upper surface of the test specimen and the second sensor measures the distance to the lower surface of the test specimen, and the control unit corrects the initial position of the distance to the upper surface measured by the first sensor and the initial position of the distance to the lower surface measured by the second sensor to be the same as each other, wherein the control unit corrects at least one of the wear profile for the upper surface and the wear profile for the lower surface so that the starting point at which the result value of the wear profile for the upper surface, which is the measurement result of the first sensor, begins to increase by measuring the position where the upper surface begins by the first sensor, and the starting point at which the result value of the wear profile for the lower surface, which is the measurement result of the second sensor, begins to increase by measuring the position where the lower surface begins by the second sensor, coincide, and the control unit obtains a wear profile for the thickness of the test specimen based on the wear profile for the upper surface and the wear profile for the lower surface, and the test specimen is braking A wear profile measuring system characterized by the above-mentioned control unit calculating the difference between the measurable limit distance value of the first sensor and the wear profile for the upper surface of the brake disc as the distance value from the first sensor to the upper surface of the brake disc, calculating the difference between the measurable limit distance value of the second sensor and the wear profile for the lower surface of the brake disc as the distance value from the second sensor to the lower surface of the brake disc, and calculating the value obtained by subtracting the sum of the distance value from the first sensor to the upper surface of the brake disc and the distance value from the second sensor to the lower surface of the brake disc from the distance value between the first sensor and the second sensor as the wear profile for the thickness of the brake disc. Claim 2 A wear profile measuring system according to claim 1, wherein the test specimen is positioned parallel to the base frame on the fixed space. Claim 3 A wear profile measuring system according to paragraph 2, wherein the sensor part is a laser sensor that measures the distance to the upper or lower surface of the braking disc. Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 A wear profile measuring system according to claim 1, wherein the transfer frame is transferred integrally on the vertical frame, the upper frame has an upper guide formed thereon on which an upper transfer part provided on the upper transfer frame slides, and the lower frame has a lower guide formed thereon on which a lower transfer part provided on the lower transfer frame slides. Claim 8 A wear profile measuring system according to claim 1, wherein the transfer module comprises: a drive unit providing rotational driving force; a fixed block fixed to the connecting frame; a transfer block fixed to the central frame and transferred together with the central frame; and a transfer bar extending from the drive unit through the fixed block and the transfer block, with its end fixed to the fixed unit located on the connecting frame. Claim 9 A wear profile measuring system according to claim 8, characterized in that, as the driving unit provides rotational driving force, the transfer block is transferred along the transfer bar, and the transfer frame is transferred according to the transfer of the transfer block. Claim 10 A wear profile measuring system according to claim 9, characterized in that the transfer distance of the transfer block is sensed based on the initial position of the transfer block and the amount of rotation of the drive unit. Claim 11 A wear profile measuring system according to claim 1, further comprising a support block that is fixed on the base frame and fixes the test specimen so that the test specimen is positioned on the upper surface. Claim 12 A wear profile measuring system according to claim 11, wherein the support block has a cylindrical shape in which an opening is formed from the outer surface to the center so that the lower frame is inserted and positioned.

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