KR100801220B1 - Strain Sensor Embedded Remote Center Compliance Device - Google Patents

Abstract

The present invention constitutes a measuring sensor capable of measuring the pressure input by the strain of the measuring block and the measuring block in the inside of the elastic center device composed of the upper and lower support bodies and a plurality of elastic bodies, the center error between the boss and the axis to be pressed It is possible to measure the pressure input at the same time, reduce the manufacturing cost of the indentation device, reduce the manufacturing process and increase the space efficiency by reducing the installation space, and improve the product competitiveness. It is about.

To this end, the elastic center apparatus capable of measuring the pressure input of the present invention includes a plurality of elastic bodies between the upper and lower supports, and the upper and lower supports, and the center error between the boss and the shaft in pure translation by the elastic center principle. An elastic center device for compensating for the above, comprising: a measurement block configured between the upper and lower support members 13 and 14; It is composed of a measuring sensor 200 which is provided on any one side of the measuring block; The measurement block is bent and deformed by the repulsive force due to the pressing force acting on any one of the upper and lower supports 13 and 14, and the bending deformation of the measurement block is measured by the measurement sensor 200, thereby measuring the measurement block. Characterized in that the force of the repulsive force is calculated according to the strain.

Press-fit measurement, elastic center for load measurement, press-fit measuring device

Description

Elastic center device capable of measuring pressure input {Strain Sensor Embedded Remote Center Compliance Device}

1 is a schematic view of a conventional indentation apparatus.

Figure 2 is a schematic diagram of a press-fit device configured with a conventional elastic center device and a load cell.

Figure 3 is an enlarged view of a coupling configuration of the elastic center device and the load cell of Figure 2;

4 is an exploded perspective view of an elastic center device including a measuring block and a measuring sensor according to a first embodiment;

5 is an assembled cross-sectional view of FIG. 4.

6 is an enlarged view of a “VI” part of FIG. 5;

7 is an exploded perspective view of a portion of the measurement block according to the second embodiment.

FIG. 8 is a cross-sectional view of the assembled state of FIG. 7 cut by the composite cross section method. FIG.

9 is an assembled bottom view of the measurement block according to the second embodiment.

Explanation of symbols on the main parts of the drawings

13: upper support 14: lower support

16 elastic body 18 limiter

110, 120: measurement block 112, 122: fixed end

114, 124: measuring stage 114a, 124a: depression

114b, 124b: protrusion 114c 124c: inclined surface

116, 126: measuring step strain interval 130: auxiliary block

140: fixed block

The present invention relates to an elastic center device capable of measuring the pressure input, and more specifically, it is possible to measure the pressure input by the strain of the measurement block and the measurement block inside the elastic center device including the upper and lower supports and the plurality of elastic bodies. By configuring the measuring sensor, it is possible to compensate the center error between the boss and the shaft to be press-fitted and to measure the push-in input, and to reduce the manufacturing cost of the press-fitting device, and to reduce the manufacturing process and the space of the installation space. The present invention relates to an elastic center device capable of increasing the pressure input to increase product competitiveness.

In general, various mechanical parts such as automobile transmission, engine, steering device, motor, gear box, etc. are produced by using robots or press-fitting machines, etc., such as bearings, oil seals, bushings, precision shafts, pins, etc. The parts are automatically pushed into the bearing bore, housing, shaft hole, pin hole, etc., which are the parts to be press-fitted, and are mass-produced.

1 is a schematic view of a conventional indentation apparatus, referring to the boss 1 is provided on the top of the frame 1 and the frame 1, the boss (B) is fixed, and the boss support (2) The lifting unit 3 and the lifting unit 3, which are provided at an upper side of the lifting unit 2, are fixed so that the shaft A is press-fitted into the boss B, and the elevator unit 3 is pushed up and down by the boss B. It consists of a guide portion (4) for supporting the lifting portion 3 and the hydraulic portion (5) for providing a lifting force to be elevated along the guide portion (4).

The press-fitting device is provided with the hydraulic pressure generated in the hydraulic pump of the hydraulic unit 5, the hydraulic cylinder provided with the hydraulic pressure is lowered or raised, the lifting unit 3 fixed to the hydraulic cylinder is the hydraulic pressure A shaft A fixed to the elevating portion 3 is bossed as the elevating portion 3 has a vertical elevating force by being guided by the guide portion 4. It is press-fitted to the boss B fixed to the support part 2.

In addition, the boss B in which the shaft A is press-fitted is extracted from the boss support part 2 by a separate extraction device, a new boss B is positioned, and the lifting part 3 is also raised to raise the new shaft ( A) is fixed and continuous indentation proceeds.

Here, the boss (B) refers to a part having a space such as a housing, a pulley, a shaft hole, a pin hole, and the shaft (A) is inserted into a space such as a bearing, an oil seal, a bushing, a pin, and a shaft. Collectively referred to parts.

However, the conventional press-fit device simply performs a press-fitting operation by forcibly injecting the shaft into the boss by hydraulic pressure, whereby the boss or the shaft is broken or the press-fitting device is broken by the forced press when the center of the boss and the shaft does not match. There was this.

In order to compensate for this, according to the applicant's Korean Patent Publication No. 2001-85013 (name: press-fit elastic center device), an elastic center device composed of a plurality of elastic bodies and limiters between the upper and lower structures and the upper and lower structures In relation to the above, the elastic center device uses an elastic center principle, wherein the elastic center principle places an elastic center point around an object constrained to the elastic center device, and when a force passing through the point is applied, An object that is supported by an elastic center device has only pure translational motion without rotational motion in the direction of the force, and when pure moment acts on the point, only pure rotational motion around the elastic center point without translational motion Says principle.

Accordingly, when the press-fit elastic center device proposed by the present applicant is attached to a conventional press-fit device, that is, the press-fit elastic center device is fixed to the conventional lifting unit 3, the press-fit elastic center device causes the boss to press. (B) and the axis (A) are mutually press-fitted to the center by the pure translational motion of the elastic body.

However, since the press-fitting apparatus with the press-fitting elastic center device or the conventional press-fitting apparatus does not have a common means for measuring the press-in strength of the boss and the shaft, that is, the press-in force, the push-in of the shaft inserted in the boss There was a problem that can not be confirmed.

The purpose of measuring the mutual pressure input of the boss and the shaft is to determine the efficiency and the service life of the component to which the boss and the shaft are coupled by how much the boss and the shaft are press-fitted to each other. In case of loose indentation that does not meet this tolerance, there is a problem that the shaft can be easily detached from the boss, or when the boss and the shaft are inserted beyond the indentation tolerance, it may be caused by excessive interference between the boss or the shaft. There is a problem that is broken.

Figure 2 is a schematic diagram of a conventional indentation device composed of an elastic center device and a load cell, referring to this, by providing an indentation device combining the applicant's elastic center device and the load cell, to compensate for the above-mentioned problems of the center error and the pressure input measurement The press-fitting device is provided, and the press-fitting device composed of the elastic center device and the load cell has an elastic center device 10 formed below the lifting part 3 which is lifted and lowered in the conventional indenting device, and the lifting part 3 Load cell 20 is configured above.

FIG. 3 is an enlarged view of a coupling configuration of the elastic center device and the load cell of FIG. 2, which will be described in more detail with reference to the load cell 20 inside the platform of the lifting unit 3 that is elevated along the guide rail of the guide unit 4. ) Is configured, the cover 22 for transmitting the load to the load cell 20 and the lower portion of the cover 22 is composed of a resilient central device 10 having a tool frame for replacing and fixing the shaft (A) at the bottom And a bracket 12 for supporting the cover 22 on a platform.

However, the press-fitting device composed of the above-mentioned elastic center device and the load cell increases the product price according to the increase in the number of parts, and the manufacturing process and the structure are complicated, which takes up a lot of installation space due to the increase in maintenance cost and increase in the number of parts. There was a problem of lowering the product competitiveness.

In addition, the guide portion 4 used in the prior art mainly used a guide member called a LM guide, and the LM guide itself is expensive, so that the design and manufacturing cost of the device using the LM guide There was an ascending problem.

In the case of the conventional press-fit device configured as shown in FIG. 1 돠, even if the load cell 20 is mounted on the lifting unit 3, the shaft A and the boss B are not used unless the elastic center device 10 is used. There is a problem in that it is impossible to accurately measure the pure indentation force acting between them.

That is, when the center of gravity between the boss (B) and the shaft (A) without mounting the elastic center device 10, the press-in is in the state that the lower end of the first axis (A) is in contact with the upper end of the boss (B). As it proceeds, the pressure input measured by the load cell 20 is the lowering force of the lifting portion, that is, the pure pressing force, plus the deformation force of the boss (B) and shaft (A) due to the center error and unnecessary friction force of the hydraulic cylinder and the guide portion, etc. The value is true.

On the contrary, when the central error between the shaft A and the boss B is corrected and press-fitted by the elastic center device 10 as shown in FIGS. 2 and 3, the load cell 20 is connected to the shaft A and the same. Only the actual indentation of the boss B is measured, so that the exact pure indentation of the conventional indentation apparatus of FIG. 1 will be measured, but the increase in the product price due to the increase in the number of parts and the complexity of the manufacturing process and structure are maintained. The maintenance cost increases, and there is a problem of lowering the product competitiveness such as taking up a lot of installation space by increasing the number of parts.

An object of the present invention for solving the above problems is to configure a measuring sensor on one side of the measurement block and the measurement block between the upper and lower support of the elastic center device composed of an upper, a lower support and a plurality of elastic bodies, In the press-fitting of the boss and the shaft, there is provided an elastic center device capable of measuring the push-in input to be able to measure the pressure input at the same time as the correction of the center error of the boss and the shaft.

Another object of the present invention is to provide an elastic center device capable of correcting the center error and measuring the pressure input, thereby increasing the space efficiency by reducing the manufacturing cost and shortening the manufacturing process and minimizing the installation space by minimizing the manufacturing parts, In particular, the present invention provides an elastic center device capable of measuring the pressure input to enhance the product competitiveness of the overall indentation device by greatly reducing the manufacturing cost due to the selective use of the LM guide, which is essential for the lifting guide of the lifting unit. .

In order to achieve the above object, the elastic center device capable of measuring the pressure input of the present invention comprises a plurality of elastic bodies between the upper and lower support members, and the upper and lower support members. An elastic center device for correcting a central error between axes, comprising: a measuring block configured between the upper and lower supports; A measuring sensor provided on one side of the measuring block); The measurement block is bent and deformed by the repulsive force due to the pressing force acting on one of the upper and lower supports, and the bending deformation of the measuring block is measured by a measuring sensor, thereby calculating the force of the repulsive force according to the strain of the measuring block. Characterized in that configured to.

In the present invention, the measuring block is a fixed end fixed to the upper support; And a measuring end provided below the fixed end and fixed to the lower support body at a predetermined height spaced apart by a measurement step deformation interval formed at a predetermined depth, and configured with a measuring sensor. A depression is formed in the center for easy attachment; A protrusion is formed on an outer circumference of the depression; Preferably, the protruding portion is formed with an inclined surface inclined from the end to the center such that the position of the operating point of the pressing force acting on the lower support is maintained at the outer periphery of the measuring end.

In the present invention, it is preferable that a plurality of insertion holes into which a plurality of elastic bodies and limiters are inserted are formed in the measurement block.

In the present invention, the measuring block is a fixed end is fixed to the upper end and the measuring end is formed to be spaced apart at intervals by the measurement step deformation interval formed at a predetermined depth on the lower end of the fixed end; The measuring stage has a depression in which a measuring sensor is formed in the center, and a protrusion is formed on the outer circumference by the depression; The protrusions are cut at regular intervals to form a plurality of single pieces by cutting; A plurality of insertion holes into which a plurality of limiters are inserted are formed in the fixed end and the measurement end, and a plurality of seat spaces are formed in a portion where the elastic body is located; An insertion hole is formed in the seat space into which an elastic body is inserted, and an auxiliary block having one end fixed between the single pieces of the measuring end by a fastening means.

In the present invention, the upper end of the auxiliary block is fixed to the measuring end in a state spaced apart from the upper support at a predetermined interval, the protrusion is at the end so that the position of the operating point of the pressure input acting on the lower support is maintained on the outer periphery of the measuring end It is preferable that a slope inclined toward the center is formed.

In the present invention, the measurement stage deformation interval is at intervals to limit the bending of the measuring stage so as not to exceed the elastic limit point of the material so that the original stage can be restored after the measuring stage is bent by the repulsive force according to the pressure input acting on the lower support. A measurement space is formed between the fixed end and the measurement end at a predetermined height at the measurement end deformation interval; Fixing the fixed block in the processing space, it is preferable to be configured so that the measurement step strain interval does not exceed the elastic limit of the material by the deviation of the height of the processing space and the fixed block.

In the present invention, the measuring sensor is preferably formed of an electrical strain gage.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)

FIG. 4 is an exploded perspective view of an elastic center device having a measuring block and a measuring sensor according to a first embodiment, and FIG. 5 is an assembly cross-sectional view of FIG. 4, with reference to the same. The detailed description thereof will be omitted.

The elastic center device capable of measuring the pressure input of the present invention includes a plurality of elastic bodies 16 provided between the upper and lower support members 13 and 14, the upper and lower support members 13 and 14, and the upper and lower support members 13 and 14, respectively. The measurement block 110 is provided between the lower supports 13 and 14, and the measurement sensor 200 is provided at one side of the measurement block 110.

In addition, a plurality of limiters 18 are configured between the upper and lower support members 13 and 14 to prevent damage due to the tensile load acting on the elastic body 16.

The upper and lower support members 13 and 14, the elastic body 16 and the limiter 18 have the same configuration as that of Korean Patent Laid-Open Publication No. 2001-85013 (name: press-fit elastic center device) proposed by the present applicant. It has an effect, so detailed description thereof will be omitted.

The measurement block 110 is formed of a fixed end 112 and a measuring end 114 provided below the fixed end 112 is fixed to the bottom of the upper support 13 by the fastening means, It is preferable that the fixed end 112 and the measuring end 114 are integrally formed to maintain a predetermined distance spaced apart from each other by the measuring end deformation interval 116 having a predetermined depth.

In addition, the measurement stage deformation interval 116 is to vary the interval according to the material, the thickness of the measurement stage 116, and the depth of the measurement stage deformation interval 116, the measurement stage deformation interval 116 Is limited not to exceed the elastic limit of the material when it is bent by the repulsive force due to the pressing force acting on the measuring end 114, to prevent the measuring end 116 from plastic deformation exceeding the elastic limit.

In this case, the measurement stage strain interval 116 preferably has a height of 0.1 ~ 0.2 mm.

In addition, it is difficult to form a narrow measurement stage deformation interval as described above, to form a processing space easy to process in the portion where the measurement stage deformation interval is formed, and a separate fixed block inserted into the processing space It is formed, and positioned in the processing space, by forming a height deviation between the processing space and the fixed block, it can be configured to form the predetermined measurement stage deformation interval 116.

In addition, the measurement stage 114 has a depression 114a is formed in the center, a protrusion 114b is formed on the outer periphery of the recessed portion of the depression 114a, the measurement in the depression 114a The sensor 200 is configured and the lower support 14 is elastically coupled to the upper support 13 by the elastic body 16 at the lower portion of the protrusion 114b, but 0.1 to 0.2 from the bottom of the protrusion 114b. Configure to maintain the spacing of mm. In addition, this gap is equal to 0 when the lower support body 14 corrects the central position error during the press-fitting operation, and the elastic body 16 is first compressed by the pressing force, and the lower support body 14 is the protrusion. It is in close contact with the bottom of the (114b), after which the pressure input is applied directly to the measuring stage 114, the measurement sensor 200 measures the amount of bending deformation of the measuring stage 114 generated at this time, the actual pressure You can calculate the input.

FIG. 6 is an enlarged view of the 'VI' part of FIG. 5. Referring to this, the protrusion 114b is formed with an inclined surface 114c for minimizing a close range of the part in close contact with the lower support 14. As shown in the drawing, the inclined surface 114c is formed to have an inclination which rises to a predetermined height from the outer circumferential end of the protrusion 114b.

For example, if the protrusion 114b is in close contact with the lower support 14 in a plane, the protrusion 114b is bent by the bending force in the protrusion 114b due to the repulsive force caused by the pressing force acting on the lower support 14. The contact position closest to the center, that is, the inner surface of the protrusion 114b serves as a point of action of the repulsive force.

Therefore, the inclined surface 114c is formed to position the action point of the repulsive force as far as possible from the center, i.e., the outer periphery of the protrusion 114b, and accordingly, the center of the action point of the pressing force applied to the measuring end 114 is formed. Since the radius is always a constant position, it is possible to accurately calculate the pressure input regardless of the amount of bending deformation of the measuring stage 114.

On the other hand, the measuring block 110 is formed with a plurality of elastic bodies 16, and a plurality of insertion holes 118 are inserted between the upper, lower support 13, 14, the limiter 18, in particular the The insertion hole 118 into which the elastic body 16 is inserted is preferably formed to have a size that does not interfere with the elastic deformation for the pure translation of the elastic body 116.

Here, the upper support 13 is fixed to the lifting portion 3 of the seating device, and the lower support 14 is coupled to the shaft fixing tool for fixing and replacing the shaft (A) the measurement block 110 is the upper The fixed end 112 is coupled to the support 13, and the measuring end 114 is in contact with the lower support 14, but this is because the upper and lower sides of the measurement block 110 are irrelevant regardless of the position where the pressure input acts. You can install it upside down.

The measurement sensor 200 is preferably formed of an electrical strain gage, but is not limited thereto. Any means capable of measuring strain due to bending force may be used, and the electrical strain gage may be used. As shown in the figure, it is preferable to form a plurality in the X and Y-axis directions, but the present invention is not limited thereto.

In addition, the measuring sensor 200 includes a peripheral device for measuring the strain, calculating the eye input according to the measured strain, and displaying the calculated pressure input value to an external worker.

Looking at the measuring method of the elastic center device capable of measuring the pressure input configured as described above are as follows.

First, the elastic center device capable of measuring the pressure input is installed and fixed to the lifting device 3 of the conventional seating device. The upper support 13 is closely attached to the lower end of the lifting device 3 and then fastened and fixed by the fastening means. .

In addition, the hydraulic pressure generated in the hydraulic pump of the hydraulic unit 5 configured on one side of the press-fit device is transmitted to the hydraulic cylinder, the hydraulic cylinder lowers the lifting unit 3 by the action of the lowering force.

An elastic center device capable of measuring the pressure input is fixed to the lower end of the descending elevating part 3, and an axis fixed to fix the shaft A press-fitted to the boss B at the lower end of the elastic center device capable of measuring the pressure input. A tool is formed, and the shaft A is pushed into the boss B by the lowering of the shaft fixing tool.

At this time, when the center error of the boss (B) and the axis (A) is generated, the smooth indentation proceeds to the center error correction between the boss (B) and the axis (A) by the elastic central device, and further, the boss Pressing force is generated according to the press-in of (B) and the shaft (A).

And, the repulsive force by the pressure input is transmitted to the lower support 14 for supporting it through the shaft fixing tool, the reaction force acting on the lower support 14 is in close contact with the upper surface of the lower support 14 Since it acts on the measuring stage 114 of 110, the measuring stage 114 is bent with a fine bending force.

In addition, the measurement sensor 200 configured in the depression 114a of the measurement stage 114 detects the strain due to the fine bending force of the measurement stage 114, calculates this and outputs it to an external display as an external monitor. Determining whether the boss (B) and the axis (A) is indented by the pushing input of the tolerance range.

Of course, when the pressure input measured by the measuring sensor 200 exceeds or does not exceed the error range is configured to determine whether or not by the automatic sensing.

When the press-in of the shaft A is completed to the boss B, the lifting unit 3 is lifted by the rising oil pressure of the hydraulic unit 5 to complete the press-in operation.

Therefore, the above-mentioned elastic center device capable of measuring the pressing force has an effect of measuring not only the concentric shape error but also the pressing error as the pressure input is measured together with the correction of the center error of the boss and the axis.

In addition, since the indentation measuring device is configured in the elastic center device, there is an effect of improving the manufacturing time, manufacturing cost, and space efficiency by minimizing the overall indentation device.

In addition, the conventional indentation device was required to use an expensive LM guide for precise lifting of the lifting unit, it is possible to selectively use the expensive LM guide, it is possible to minimize the unit cost of the indentation device product competitiveness Branches are effective.

(Second embodiment)

FIG. 7 is an exploded perspective view of a part of the measuring block according to the second embodiment, FIG. 8 is a cross-sectional view of the assembled state of FIG. 7 cut by the composite cross section method, and FIG. 9 is an assembled bottom surface of the measuring block according to the second embodiment. As shown in FIG. 2, the measurement block 120 according to the second embodiment includes a fixed end 122 having an upper end fixed to a lower end of the upper support 13, and a measurement provided below the fixed end 122. It is composed of a stage 124, and the measurement stage deformation interval 126 for maintaining a gap between the fixed end 122 and the measuring end 124, the fixed end 122 and the measuring end 124 is an elastic body A plurality of seat spaces 129 on which the 16 is seated is formed, and the auxiliary blocks 130 are provided in the seat spaces 129 and support the elastic body 16.

In addition, the measuring end 124 has a recessed portion 124a having a predetermined depth in the center thereof, and a protrusion 124b is formed on the outer circumference by the recessed portion 124a, and the protrusion 124b has a seat space ( 129) is cut at regular intervals to form each single piece.

In addition, each single piece of the protrusion 124b is formed with a fastening hole into which the fastening means is inserted so that the auxiliary block 130 is fastened and fastened, and an insertion hole 128 into which the limiter 18 is inserted is formed at the center thereof. do.

In addition, the lower end of the protruding portion 124b is formed with an inclined surface 124c for minimizing the contact area with the lower support 14, the inclined surface 124c is preferably to have an inclined angle rising from the outside to the inside. This has the same effect as the inclined surface 114c of the first embodiment.

On the other hand, the depression 124a is configured with a measurement sensor 200, the measurement sensor 200 is formed of an electrical strain gage (electric strain gage), the electric strain gauge X and Y as shown It is preferable to form a plurality in the axial direction, but is not limited thereto, and may be formed in plural in order to calculate an accurate pressing force.

The measurement stage deformation interval 126 is typically 0.1 to 0.2 mm as an interval for preventing deformation beyond the elastic limit of the measurement stage 124, but difficult to process the measurement stage deformation interval 126. In order to solve this problem, processing is performed on the part where the measurement stage deformation interval 126 is formed by processing a comfortable space, thereby forming a space.

In addition, the fixed block 140 is positioned in the formed space, and the measurement stage deformation interval 126 is preferably formed by the height deviation between the fixed block 140 and the processed space.

The auxiliary block 130 has an insertion groove is formed so that the elastic body 16 is fixed to the inside, the lower end is configured to be fastened by the fastening means between each of the single pieces formed in the projection (124b).

At this time, the upper end of the auxiliary block 130 is preferably formed with a lower height than the fixed end 122, which is the lower end of the upper support 13 is fixed to the fixed end 122 of the auxiliary block 130 If the top surface is in close contact, it is because there is a problem that interferes with the bending deformation of the protrusion (124b).

The measuring method by the measuring block according to the second embodiment configured as described above is the same as the first embodiment, and thus the operational effect thereof is omitted.

As described above, the elastic center device capable of measuring the pressure input of the present invention comprises a measuring block on one side of the measuring block and the measuring block between the upper and lower supports of the elastic center device including the upper and lower supports and the plurality of elastic bodies. In press-fitting the boss and the shaft, the press input can be measured simultaneously with the correction of the center error of the boss and the shaft.

In addition, by providing an elastic center device capable of correcting the center error and measuring the pressure input, through this, the manufacturing cost is reduced by minimizing the manufacturing parts, the manufacturing process is shortened, and the installation space is narrowed, and the space efficiency is increased. As the LM guide, which was used for the guide, can be selectively used, the manufacturing cost of the indentation device can be strengthened by a significant reduction in the manufacturing cost.

What has been described above is just one embodiment for implementing the elastic center device capable of measuring the pressure input according to the present invention, the present invention is not limited to the above-described embodiment, the present invention as claimed in the claims Without departing from the gist of the present invention, one of ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (10)

In the elastic center device is composed of a plurality of elastic body between the upper and lower support, and the upper and lower support, to compensate for the central error between the boss and the axis in pure translation by the elastic center principle, A measurement block configured between the upper and lower supports 13 and 14; It is composed of a measuring sensor 200 which is provided on any one side of the measuring block; The measurement block is bent and deformed by the repulsive force due to the pressing force acting on any one of the upper and lower supports 13 and 14, and the bending deformation of the measurement block is measured by the measurement sensor 200, thereby measuring the measurement block. The center of gravity device capable of measuring the pressure input, characterized in that configured to calculate the force of the repulsive force according to the strain. The method of claim 1, wherein the measurement block 110 is A fixed end 112 fixed to the upper support 13; And It is provided below the fixed end 112, is fixed to a position close to the lower support 14 in a state separated by a predetermined height by a measurement stage deformation interval 116 formed to a predetermined depth, measuring sensor 200 is configured Measuring stage 114; elastic center device capable of measuring the pressure input, characterized in that consisting of. The method of claim 2, wherein the measuring stage 114 A depression 114a is formed in the center for easy attachment of the measurement sensor 200; A protrusion 114b is formed on an outer circumference of the depression 114a; The protrusion 114b is an elastic center device capable of measuring the pressure input, characterized in that the inclined surface (114c) is inclined from the end to the center so that easy bending by the pressure input acting on the lower support (14) is formed. The method according to any one of claims 1 to 3, The measuring block 110, the elastic center device capable of measuring the pressure input, characterized in that a plurality of insertion holes 118 into which a plurality of elastic bodies (16) and limiters (18) are inserted. The method of claim 1, The measurement block 120 is spaced at intervals of the fixed end 122, one end of which is fixed to the upper support 13, and the measurement end deformation interval 126 formed at a predetermined depth on the lower end of the fixed end 122. A measuring stage 124 is formed; The measuring stage 124 has a depression 124a having a measuring sensor 200 formed in the center thereof, and a protrusion 124b is formed on the outer circumference by the depression 124a; The protrusions 124b are cut at regular intervals to form a plurality of single pieces by cutting; The fixing end 122 and the measuring end 124 are formed with a plurality of insertion holes 128 into which a plurality of limiters 18 are inserted, and a plurality of seat spaces 129 are formed at a portion where the elastic body 16 is located. Become; The seat space 129 is formed with an insertion hole into which the elastic body 16 is inserted, and one end between the single piece of the measuring stage is fixed by the fastening means 130; Elastomeric center unit capable of measuring input. The method of claim 5, wherein The upper end of the auxiliary block 130 is an elastic center device capable of measuring the pressure input, characterized in that fixed to the measuring stage 124 in a state spaced apart from the upper support 13 at a predetermined interval. The method of claim 5, wherein The protruding portion 124b is elastically capable of measuring the pressure input, characterized in that the inclined surface 124c inclined from the end to the center is formed so that the easy bending due to the repulsive force acting on the lower support 14 is formed. Centerpiece. The method of claim 2 or 5, wherein the measurement stage deformation interval 116, 126 is The measurement stages 114 and 124 are bent by the repulsive force due to the pressure input acting on the lower support 14, and thus the measurement stages 114 and 124 are not bent so as not to exceed the elastic limit point of the material so that the original state can be restored. Elastic center device capable of measuring the pressure input, characterized in that formed at intervals suggesting. The method of claim 8, In the measurement stage deformation interval 116, 126 to form a processing space between the fixed end and the measurement end to a certain height for ease of processing; Fixing the fixed block 140 in the processing space, characterized in that configured to form a measurement step deformation interval does not exceed the elastic limit point of the material by the deviation of the height of the processing space and the fixed block 140 Elastomeric center unit capable of measuring pressure input. The method according to any one of claims 1 to 3 or 5, The measuring sensor 200 is an elastic center device capable of measuring the pressure input, characterized in that formed by an electrical strain gage (electrical strain gage).

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