KR20160035873A - A rotary plate structure for measurement of torque and method for manufacturing the plate - Google Patents

Abstract

The present invention relates to a rotary plate to measure a torque, and a manufacturing method thereof. The rotary plate to measure torque comprises N strain parts (herein, N is a natural number of two or more) formed by a first and a second slit located to be separated from a rotary shaft of the rotary plate by a predetermined distance, wherein the first slit is connected to the second slit which forms an adjacent strain part by a third slit. As such, the present invention improves a precision of a torque measurement as the rotary plate is easily strained by a torsional load.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rotary plate for torque measurement,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotation plate for torque measurement and a method of manufacturing the same, and more particularly, to a rotation plate in which torque measurement is performed by a structure in which elastic deformation occurs, and a manufacturing method thereof.

The torsional load is applied to the rotating shaft or the rotating mechanism for transmitting the power depending on the magnitude of the force applied to the rotating shaft. The rotating shaft is designed to have a certain strength or more to prevent torsional damage. The magnitude of the force applied to the rotating shaft changes from time to time according to the operating environment of the mechanism. Therefore, the designer must design the rotating shaft and rotating mechanism .

 However, if the rotating mechanism is designed with more than necessary strength, the volume of the mechanism becomes large, and the power transmission efficiency becomes low due to the increase in weight.

In order to miniaturize the rotating mechanism, a method of measuring the torsional load applied to the rotating shaft in real time and controlling the power applied to the rotating shaft has been attempted. A separate torque meter is required for torque measurement.

Conventional torque measuring devices include contact type and non-contact type measuring devices. The contact type measuring device includes a torque converter using a strain gauge and a slip ring. These devices are simple in structure and easy to measure, but they are contact type using strokes of brush and ring. Therefore, if the lifetime of equipment changes according to the rotation speed or usage time, Hassle is generated.

On the other hand, unlike the contactless type contactless torque measuring device, the life span is semi-permanent regardless of the rotation speed or the use time of the shaft to be measured. Even if the rotation speed of the shaft is irregular, a stable output value can be obtained. However, There is a disadvantage that the measurement accuracy is lowered when the torque value is small.

Patent Document 1: Korean Patent Registration No. 10-0879827 (published on Jan. 21, 2009)

Patent Document 2: Korean Registered Patent No. 10-1342623 (issued on December 17, 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotation plate for torque measurement and a manufacturing method thereof for solving the disadvantages of the conventional torque measuring device. Specifically, the present invention provides a rotary plate using a structure that is easily deformed by a torsional load, and a manufacturing method thereof.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to a first aspect of the present invention, there is provided a strain plate comprising a strain deforming portion formed by a first slit and a second slit located at a certain distance from a rotation axis of a rotating plate, and having N (where N is a natural number of 2) Wherein the first slit is connected to a second slit constituting a neighboring strain deformation part by a third slit.

Here, the first slit and the second slit are formed in a curved shape facing the convex side, and the third slit connects an end nearer to the rotation axis of the first slit and the second slit.

At this time, a sensor attaching groove is provided on at least one surface of the strain deforming portion.

At this time, the widths of the first slit and the second slit are formed to be smaller than the maximum value of the elastic deformation value of the strain deformation portion.

At this time, each of the first slits and the second slits is provided with stress distribution grooves at each of the ends of the curved portions.

At this time, the rotary plate may be made of stainless steel.

According to a second aspect of the present invention, there is provided a strain plate comprising a strain deforming portion formed by a first slit and a second slit located at a certain distance from a rotation axis of a rotary plate, at least N (where N is a natural number of 2) Wherein the first slit is connected to a second slit constituting a neighboring strain deformation part by a third slit, the method comprising the steps of: measuring a torque value applied to the outside of the rotating plate, The width of the first slit and the slit of the second slit are determined by the maximum elastic deformation value of the strain deformation portion based on the anticipated torque value applied to the strain deformation portion and the cross sectional area of the rotating plate and the elastic modulus based on the number of deformation portions Thereby forming a first slit and a second slit; And forming a third slit connecting the first slit and the second slit. The present invention also provides a method of manufacturing a rotating plate for torque measurement.

The width of the first slit and the second slit is smaller than the maximum elastic deformation value of the strain deformation portion.

Embodiments of the disclosed technique may have effects that include the following advantages. It should be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, since the embodiments of the disclosed technology are not meant to include all such embodiments.

The rotation plate for torque measurement according to the present invention provides a rotating body structure that is easily deformed by a torsional load, so that the accuracy of torque measurement can be increased.

The rotation plate for torque measurement according to the present invention enables precise torque measurement, thereby making it possible to miniaturize the power transmission system. Therefore, it is possible to appropriately adjust the load transmitted according to the torque measurement, thereby contributing to energy saving.

Further, the rotary plate for torque measurement according to the present invention has an advantage that it can be applied to various rotary motors, automobile, railroad, and rotary drive parts of an aircraft.

1 is a schematic view showing the structure of a rotation plate for torque measurement according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a structure of a rotating plate according to an embodiment of the present invention applied to a flywheel. FIG.
3 is a flowchart illustrating a method of manufacturing a rotating plate structure for torque measurement according to an embodiment of the present invention.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the disclosed technology should be understood to include equivalents capable of realizing technical ideas.

Meanwhile, the meaning of the terms described in the present application should be understood as follows. The terms first, second, etc. are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between.

1 is a schematic view showing the structure of a rotation plate for torque measurement according to an embodiment of the present invention.

The rotation plate 100 for torque measurement according to an embodiment includes a strain deformation portion 110-a formed by a first slit 111a and a second slit 111b located at a certain distance from the rotation axis 200 of the rotation plate, 1 and the first slit 111a is connected to the second slit 111b constituting the adjacent strain deforming portion 110-2 by the third slit 114. [

At this time, it is preferable that the first slit 111a and the second slit 111b take a curved shape in which the convex sides face each other. The strain deforming portion 110 formed by the first slit 111a and the second slit 111b has a concave shape at an intermediate portion and can be easily deformed elastically.

The strain deforming portion 110 is elastically deformed sensitively according to the torque value of the rotating shaft 200 and the deformation value of the strain deforming portion 110 is obtainable through the strain gage (not shown). Thus enabling precise measurement of torque values.

According to the embodiment, the strained deforming portion 110 may include a sensor attaching groove 113 for attaching the strain gage to at least one side surface.

It is preferable that the widths of the first slit 111a and the second slit 111b are formed to be smaller than the elastic limit deformation value of the strain deforming portion 110. [ Thus, damage to the strained deforming portion 110 from an excessive load can be prevented.

It is preferable to form stress distribution grooves 112a, 112b, 112c, and 112d for stress dispersion applied to the strain deforming portion 110 at the ends of the first slit 111a and the second slit 111b. The stress distributing grooves 112a, 112b, 112c, and 112d can disperse the fatigue applied to the strain deforming portion 110. [

The rotary plate 100 according to the present invention may be formed of any material having elasticity, but is preferably formed of stainless steel having excellent elasticity and corrosion resistance.

FIG. 2 is a perspective view showing a structure of a rotating plate according to an embodiment of the present invention applied to a flywheel. FIG.

According to the present embodiment, the flywheel itself has a structure capable of measuring the torque of the crankshaft 300. Therefore, from the viewpoint of the engine design, it is not necessary to consider the arrangement of the torque measuring transducer for the torque measurement.

The number of strain deforming parts 110-1, 110-2, ... 110-n can be appropriately adjusted based on the anticipated torque of the crankshaft 300 and the elastic strain of the strain deforming part.

3 is a flowchart illustrating a method of manufacturing a rotating plate structure for torque measurement according to an embodiment of the present invention.

A method of manufacturing a rotating plate structure for torque measurement according to an embodiment includes a torque value calculation step S310, an elastic deformation value calculation step S320, and a slit formation step S330.

In step S310, an estimated torque value to be applied to the strain deformation portion is calculated based on the torque value applied to the outside of the rotating plate and the number of strain deformation portions to be formed.

In step S320, the maximum elastic deformation value of the strain deformation portion is calculated based on the cross-sectional area of the rotating plate and the elastic modulus of the material metal. And then determines the widths of the first slit and the second slit based on the deformation value.

At this time, it is preferable that the widths of the first slit and the second slit are formed to be smaller than the maximum value of the elastic deformation value of the strain deformation portion.

In step S330, the first slit and the second slit are formed. And then forming a third slit connecting the first slit and the second slit. According to a preferred embodiment, the first slit and the second slit termination preferably further include stress distribution grooves for stress dispersion applied to the strain deformation portion.

The rotation plate for torque measurement according to the above-described embodiment provides a rotating body structure that is easily deformed by a torsion load, thereby improving the accuracy of torque measurement.

Also, since the rotation plate for torque measurement according to the embodiment enables precise torque measurement, it is possible to miniaturize the power transmission system.

Although the disclosed method and apparatus have been described with reference to the embodiments shown in the drawings for illustrative purposes, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. I will understand that. Accordingly, the true scope of protection of the disclosed technology should be determined by the appended claims.

100: rotating plate
110-1, 110-2, ... 110-n:
111a: first slit, 111b: second slit, 114: third slit
112a, 112b, 112c, 112d:
113: Sensor mounting groove
200: rotation axis
300: Crankshaft

Claims (9)

And a strain deforming portion made up of a first slit and a second slit which are located at a certain distance from the rotation axis of the rotating plate includes N (N is a natural number of 2)
Wherein the first slit is connected to a second slit that forms a neighboring strain modification by the third slit.
The method according to claim 1,
Wherein the first slit and the second slit are formed in a curved shape with their convex sides facing each other.
The method of claim 2,
And the third slit connects an end nearer to the rotation axis of the first slit and the second slit.
The method according to claim 1,
And a sensor attaching groove is provided on at least one surface of the strain deforming portion.
The method according to claim 1,
And the width of the first slit and the second slit is smaller than the maximum value of the elastic deformation value of the strain deformation portion.
The method of claim 2,
Wherein each of the first slits and the second slits is provided with stress distribution grooves at each of the ends of the curves.
The method according to claim 1,
Wherein the rotating plate is made of stainless steel.
Wherein the first slit includes at least N (where N is a natural number equal to or greater than 2) strained deformations made up of the first slit and the second slit located at a certain distance from the rotation axis of the rotating plate, The method of manufacturing a rotary plate for measuring torque connected to a second slit constituting a strain deformation part,
Based on the torque value applied to the outside of the rotating plate and the number of the strain deforming portions, the estimated torque value applied to the strain deforming portion, the maximum elastic deformation value of the strain deforming portion based on the sectional area and the elastic modulus of the rotating plate Forming a first slit and a second slit by determining a width of the first slit and the second slit; And
And forming a third slit connecting the first slit and the second slit. ≪ RTI ID = 0.0 > 11. < / RTI >
The method of claim 8,
And the width of the first slit and the second slit is smaller than the maximum elastic deformation value of the strain deformation portion.

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