KR20230134351A - Auxiliary apparatus for plug gauge - Google Patents

Abstract

An auxiliary device for a plug gauge is disclosed. An auxiliary device for a plug gauge according to an embodiment of the present invention is an auxiliary device for a plug gauge having threaded portions at both ends of a body portion, and includes a fixing portion into which the plug gauge is inserted and fixed; a motor that rotates the fixture in a forward or reverse direction; and a ratchet member disposed between the motor and the fixing part to transmit the rotation of the motor to the fixing part, and idling with respect to the fixing part when a load of a predetermined size or more is applied to the fixing part. According to the present invention, an auxiliary device for a plug gauge is provided that allows the plug gauge to automatically rotate forward/reverse and can accurately measure the depth of the screw hole.

Description

Auxiliary device for plug gauge {AUXILIARY APPARATUS FOR PLUG GAUGE}

An auxiliary device for a plug gauge according to an embodiment of the present invention relates to an auxiliary device for a plug gauge that automates the rotation of the plug gauge.

Generally, when measuring the inner diameter of a hole machined in a workpiece, a plug gauge inserted into the machined hole is used. The plug gauge is also called a Go-no gauge. This plug gauge has a support part and a gauge part on the same axis, and the operator inserts the gauge part into the machined hole while holding the support part by hand to measure the precision of the hole.

However, the measurement process in which the user rotates and inserts the gauge into a hole such as a screw hole and then rotates it again to withdraw it takes some time and is cumbersome.

In addition, when measuring the depth of a screw hole, the gauge part is rotated, fastened and inserted into the screw hole, the length of the unfastened section is measured with a dimensional gauge such as a vernier caliper, and the measured value is measured by comparing it to the length of the gauge part. There is. However, this method requires time to operate the vernier caliper, and after measuring the length, the measured value must be compared one by one with the relevant standard, so the inspection work is bound to be cumbersome and take a long time.

Republic of Korea Patent No. 10-1080324 (2011.10.31.) “Screw fastening length inspection gauge”

The purpose of the auxiliary device for a plug gauge according to an embodiment of the present invention is to provide an auxiliary device for a plug gauge that allows the plug gauge to automatically rotate forward/reverse.

In addition, the purpose of the auxiliary device for a plug gauge according to an embodiment of the present invention is to provide an auxiliary device for a plug gauge capable of accurately measuring the depth of a screw hole.

In addition, the purpose of the auxiliary device for a plug gauge according to an embodiment of the present invention is to provide an auxiliary device for a plug gauge that can accurately measure the depth of a hole to be measured.

An auxiliary device for a plug gauge according to an embodiment of the present invention is an auxiliary device for a plug gauge having threaded portions at both ends of a body portion, and includes a fixing portion into which the plug gauge is inserted and fixed; a motor that rotates the fixture forward or backward; and a ratchet member disposed between the motor and the fixing part to transmit the rotation of the motor to the fixing part, and idling with respect to the fixing part when a load of a predetermined size or more is applied to the fixing part.

Here, the ratchet member is coupled to the motor shaft of the motor, and a ratchet body part in which a sawtooth-shaped first protrusion is formed on the inner peripheral surface; and a ratchet body part installed inside the ratchet body part and selectively engaged with the first protrusion. A second protrusion in the shape of a sawtooth is formed, and a transmission member coupled to the fixing part may be included.

Here, the plug gauge and the fixing part may be magnetically coupled.

Here, a housing in which the fixing part, the motor, and the fixing part are accommodated; A measuring member partially accommodated in the housing, accommodating the fixing part, and having one end elastically supported; wherein, with an end of the measuring member in contact with the object to be measured, the fixing part rotates according to the rotation of the measuring member. When the housing advances, the measuring member can retract.

Here, a display unit including a displacement sensor that senses the amount of displacement of the measurement member, an arithmetic unit that calculates a detection value based on the amount of displacement, and a display unit that displays the calculation results of the arithmetic unit, may be further included.

According to embodiments of the present invention, there are at least the following effects.

According to the auxiliary device for a plug gauge according to the present invention, the plug gauge automatically rotates forward/reverse, enabling rapid measurement.

In addition, accurate measurement of the screw hole depth is possible.

Additionally, the magnetic coupling makes it easy and convenient to remove/install the plug gauge.

The effects according to the present invention are not limited to the contents exemplified above, and further various effects are included in the present specification.

1 is a perspective view of an auxiliary device for a plug gauge according to an embodiment of the present invention.
Figure 2 is a side view of the housing of an auxiliary device for a plug gauge according to an embodiment of the present invention.
Figure 3 is a schematic main sectional view of an auxiliary device for a plug gauge according to an embodiment of the present invention.
Figure 4 is a perspective view of the main part of an auxiliary device for a plug gauge according to an embodiment of the present invention.
Figure 5 is an enlarged view of the main part of an auxiliary device for a plug gauge according to an embodiment of the present invention.
Figure 6 is a diagram illustrating the operation of an auxiliary device for a plug gauge according to an embodiment of the present invention.

The present invention can be modified in various ways and can have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Prior to explanation, terms used in the detailed description will be explained. In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component. Therefore, it goes without saying that the first component mentioned below may also be a second component within the technical spirit of the present invention. Additionally, singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as 'include' or 'have' mean the presence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification, and one or more other features or components. This does not preclude the possibility of addition.

Additionally, in the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are shown arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is shown.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the attached drawings. In the description with reference to the accompanying drawings, identical or corresponding components are assigned the same reference numerals and duplicate descriptions thereof are omitted.

An auxiliary device for a plug gauge according to an embodiment of the present invention relates to an auxiliary device for a plug gauge that automatically rotates forward/reverse and is capable of accurately measuring the depth of a screw hole.

Figure 1 is a perspective view of an auxiliary device for a plug gauge according to an embodiment of the present invention, and Figure 2 is a side view of a housing of an auxiliary device for a plug gauge according to an embodiment of the present invention.

The auxiliary device 1000 for a plug gauge according to an embodiment of the present invention includes a housing 100, a motor 200, a fixing part 300, a ratchet member 400, a measuring member 500, and Includes a display unit 600. In this embodiment, the plug gauge 10 is a known configuration also called a Go-No gauge, Go-NoGo gauge, and screw gauge, and has a threaded portion 12 at both ends of the body portion 11. ) is provided.

The housing 100 is configured to accommodate and install the motor 200, the fixing part 300, the ratchet member 400, etc.

In this embodiment, the housing 100 includes a first body 110 in which a hollow portion is formed to accommodate the motor 200, the fixing part 300, the ratchet member 400, and the measuring member 500, and a charging unit. It can be divided into a second body 120 in which a battery, etc. is installed.

A display unit 600 is mounted on one side of the housing 100.

And a support plate 130 is coupled to the inside of the housing 100. One side of the support plate 130 may be coupled to the inner surface of the housing 100, or the entire side may be coupled to the inner surface of the housing 100 to form a partition.

The support plate 130 is provided so that the motor shaft 210 of the motor 200 penetrates, and thus the motor 200 can be fixedly mounted on one side of the support plate 130.

Meanwhile, a measuring member 500 is connected to the other side of the support plate 130. This will be described later.

The fixing part 300 is configured to insert and fix the plug gauge 10.

In this embodiment, the fixing part 300 is provided in a cylindrical shape and has a depression 310 that is depressed inward from one surface. The depression 310 is an area where the plug gauge 10 is inserted. The fixing part 300 is magnetically coupled to the plug gauge 10. Since the plug gauge 10 is inserted and coupled to the fixing part 300 through magnetism, the plug gauge 10 can be easily removed and installed. Therefore, it is possible to easily replace the plug gauge 10 with the threaded portion 12 of various specifications.

The fixing part 300 is selectively rotated by receiving the rotational force of the motor 200 from the ratchet member 400.

Figure 3 is a schematic cross-sectional view of the main part of an auxiliary device for a plug gauge according to an embodiment of the present invention, Figure 4 is a perspective view of the main part of an auxiliary device for a plug gauge according to an embodiment of the present invention, and Figure 5 is a schematic cross-sectional view of the main part of an auxiliary device for a plug gauge according to an embodiment of the present invention. This is an enlarged view of the main part of an auxiliary device for a plug gauge according to an embodiment.

The ratchet member 400 is disposed between the motor 200 and the fixing part 300 and transmits the rotation of the motor 200 to the fixing part 300, and when a load of a certain size or more is applied to the fixing part 300. It is configured to idle with respect to the fixing unit 300.

The ratchet member 400 includes a ratchet body part 410 and a transmission member 420.

In this embodiment, the ratchet body part 410 is provided in a cylindrical shape, and a through hole 411 is formed on one side, and an insertion hole 412 into which the transmission member 420 is inserted is formed on the other side.

The motor shaft 210 is inserted into the through hole 411, and a bolt is fastened through the first mounting hole 413 formed on the side of the ratchet body part 410, thereby attaching the motor shaft 210 and the ratchet body part 410. are combined with each other. Through this, the motor shaft 210 and the ratchet body part 410 rotate together.

A first protrusion in the shape of a sawtooth is formed on the inner peripheral surface of the ratchet body part 410.

The transmission member 420 is installed in the insertion hole 412 of the ratchet body part 410. The transmission member 420 is bolted to the ratchet body part 410 through the second mounting hole 414 formed on the side of the ratchet body part 410.

The transmission member 420 is formed with a sawtooth-shaped second protrusion that selectively engages with the first protrusion.

As the motor 200 is driven, the motor shaft 210 rotates, and the ratchet body part 410 coupled to the motor shaft 210 rotates.

At this time, when a load of a certain size or less is applied to the fixing part 300, the first protrusion and the second protrusion are engaged with each other and the transmission member 420 is connected to the ratchet body part 410 as the motor shaft 210 rotates. rotate together.

If a load of a certain size or more is applied to the fixing part 300, the first protrusion and the second protrusion are not engaged with each other, and therefore, when the motor shaft 210 rotates, only the ratchet body part 410 is attached to the fixing part 300. Idle about.

A coupling shaft 421 is formed on the transmission member 420, and the coupling shaft 421 is inserted into the coupling hole 320 formed on the other surface of the fixing part 300. By fastening the bolt to the coupling hole 320, the transmission member 420 and the fixing part 300 are coupled to each other. As the fixing part 300 and the transmission member 420 are coupled to each other, the fixing part 300 rotates only when the first protrusion and the second protrusion are engaged with each other and the transmission member 420 is rotated.

The measuring member 500 is partially accommodated in the housing 100, and one end is elastically supported by the housing 100. Specifically, a portion of the measuring member 500 is accommodated in the housing 100, and a hollow portion of the measuring member 500 is formed to accommodate the fixing portion 300 therein. One end of the measuring member 500 is elastically supported by an elastic member, and the elastic member is coupled to the other side of the support plate 130. That is, one end of the elastic member may be coupled to the other side of the support plate 130, and the other end may be coupled to one end of the measuring member 500.

The fixing part 300 is accommodated inside the measuring member 500, and since there is no coupling relationship between the measuring member 500 and the fixing part 300, the measuring member 500 and the fixing part 300 have independent movements.

With the end of the measuring member 500 in contact with the object to be measured, when the housing 100 advances according to the rotation of the fixing part 300, the measuring member 500 retreats as the elastic member is compressed.

The measuring member 500 may have a scale mounted on one side.

And the display unit 600 is configured to measure and display the amount of displacement of the measuring member 500.

The display unit 600 includes a displacement sensor, a calculation unit, and a display unit.

The displacement sensor senses the amount of displacement by detecting changes in the magnetic field of the scale, and the calculation unit is connected to the displacement sensor and calculates the detection value based on the amount of displacement of the scale. The operation unit may be an electronic circuit. And the detection value calculated by the calculation unit is displayed on the display unit made of LCD.

From now on, the operation of the auxiliary device for a plug gauge according to an embodiment of the present invention will be described.

Figure 6 is a diagram illustrating the operation of an auxiliary device for a plug gauge according to an embodiment of the present invention.

First, insert the plug gauge 10 into the fixing part 300. When the plug gauge 10 is inserted, it is coupled to the fixing part 300 by magnetism.

Afterwards, the threaded portion 12 of the plug gauge 10 is placed in the threaded hole of the object to be measured. At this time, the measurement member 500 may be in contact with the surface of the object to be measured. And at this time, the scale value can be input into the display unit 600 as a reference value.

When power is supplied to the motor 200 through a switch operation, the motor shaft 210 rotates, and the ratchet body part 410 to which the motor shaft 210 is coupled rotates.

At this time, since a load of a predetermined size or less is applied to the fixing part 300, the first protrusion and the second protrusion are engaged with each other, and thus the transmission member 420 is rotated by the rotation of the ratchet body part 410.

Since the transmission member 420 is coupled to the fixing part 300, the fixing part 300 rotates, and through this, the plug gauge 10 rotates and is inserted into the screw hole.

When the plug gauge 10 is inserted into the screw hole, the housing 100 moves together in the insertion direction because the plug gauge 10 is mounted on the fixing part 300. At this time, the measuring member 500 is retracted in a direction opposite to the insertion direction as the elastic member is compressed.

The amount of retreating displacement of the measuring member 500 is detected and displayed by the display unit 600.

Afterwards, when the threaded part 12 comes into contact with the inner wall of the screw hole, a load of a predetermined size or more is applied to the fixing part 300.

Accordingly, the engagement between the first protrusion and the second protrusion is released, and thus the ratchet body part 410 is idled by the fixing part 300.

The measuring member 500 also no longer retracts, and the value detected at this time becomes the depth of the screw hole.

Once the depth measurement of the screw hole is completed, the user reversely rotates the motor shaft 210 through switch operation to remove the screw portion 12 from the screw hole and then measures the next screw hole.

As described above, according to the present invention, an auxiliary device for a plug gauge is provided that allows the plug gauge to automatically rotate forward/reverse and enables accurate measurement of the screw hole depth.

The use of any examples or illustrative terms (e.g., etc.) in the present invention is merely to describe the present invention in detail, and unless limited by the claims, the scope of the present invention is limited by the examples or illustrative terms. It doesn't work. Additionally, a person skilled in the art will know that various modifications, combinations, and changes may be made according to design conditions and factors within the scope of the appended claims or equivalents thereof.

Accordingly, the spirit of the present invention should not be limited to the above-described embodiments, and the scope of the spirit of the present invention, as well as the claims described below, as well as any scope equivalent to or equivalently changed from this claim, shall fall within the scope of the spirit of the present invention. It will be said that it belongs.

1000: Auxiliary device for plug gauge
100: Housing 200: Motor
300: Fixing part 400: Ratchet member
500: Measuring member 600: Display unit

Claims (5)

An auxiliary device for a plug gauge having threaded portions at both ends of the body,
a fixing part into which the plug gauge is inserted and fixed;
a motor that rotates the fixture forward or backward; and
a ratchet member disposed between the motor and the fixing part to transmit rotation of the motor to the fixing part, and idling with respect to the fixing part when a load of a predetermined size or more is applied to the fixing part;
Auxiliary equipment for plug gauges including.
According to paragraph 1,
The ratchet member,
A ratchet body part that is coupled to the motor shaft of the motor and has a sawtooth-shaped first protrusion formed on the inner peripheral surface; and a sawtooth-shaped second protrusion that is installed inside the ratchet body part and selectively engages with the first protrusion. A transmission member is formed and coupled to the fixing part;
Auxiliary equipment for plug gauges including.
According to paragraph 2,
The plug gauge and the fixing part are magnetically coupled.
Auxiliary device for plug gauges.
According to any one of claims 1 to 3,
a housing in which the fixing part, the motor, and the fixing part are accommodated;
It further includes a measuring member that is partially accommodated in the housing, the fixing part is accommodated, and one end is elastically supported,
With the end of the measuring member in contact with the object to be measured, when the housing advances according to the rotation of the fixture, the measuring member retreats.
Auxiliary device for plug gauges.
According to clause 4,
A display unit including a displacement sensor that senses the amount of displacement of the measurement member, an arithmetic unit that calculates a detection value based on the amount of displacement, and a display unit that displays the calculation results of the arithmetic unit;
An auxiliary device for a plug gauge further comprising:

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