KR101424749B1 - Fastening device for reducing noise and detecting fault of stud bolt - Google Patents

Abstract

The present invention relates to a stud bolt fastening device capable of reducing noise and automatically detecting a bad bolt, which can minimize generation of the noise by vibration of a product to improve a working environment, and automatically detect a stud bolt to be wrongly fastened to remarkably lower a fraction defective of the product to improve productivity. The stud bolt fastening device includes a body (100); a pair of fastening units (300, 300′) installed to the body (100) and having a servo motor (310), a shaft (320) connected to and rotated by the servo motor (310), and a fastening socket (330), detachable installed to the shaft (320), for fastening a stud bolt (ST); torque sensors (TS, TS′) respectively installed to the fastening units (300, 300′) to measure the torque of the shaft (320); a lifting unit (200) provided between the body (100) and the fastening units (300, 300′) to move up and down the fastening units (300, 300′); a material holder (400) installed to the body (100) below the fastening units (300, 300′) to which a material (M) having a pair of stud bolts (ST) is detachable inserted; and a control panel (500), installed to the body (100), for controlling the operation of the fastening units (300, 300′) and the lifting unit (200), and receiving the torque value from the torque sensors (TS, TS′) to stop the operation of the servo motor (310) of the fastening units (300, 300′) provided with the torque sensor (TS, TS′) if the torque value is higher than a preset value.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a stud bolt fastener for automatically detecting noise reduction and bolt failure,

The present invention relates to a stud bolt fastener, and more particularly, to a stud bolt fastener which improves the working environment by minimizing generation of noise due to vibration of a product and automatically detects a stud bolt that has been fastened, The present invention relates to a stud bolt fastener capable of automatically detecting a noise reduction and a bolt failure which can be caused by a bolt.

Generally, stud bolt is a screw which is made of male thread on both ends and is mainly used when a through hole can not be drilled.

More specifically, one end is generally made of a female thread made of a mother material and is semi-permanently stuck (fastening; see Fig. 5a) and the other end is fastened with a nut.

More specifically, the stud bolt is strongly tightened by using an impact wrench in a state where the stud bolt is integrally joined to the base material. Such an impact wrench is used for a regenerative bore of the registered utility model No. 20-0254534 (air impact wrench) No. 97-8364 Air Impact Wrench) and a communication line made available to the public (Naver Site Knowledge Encyclopedia).

However, when the stud bolts are tightened using the impact wrench, it is necessary to fasten the stud bolts one by one by hand. Therefore, the work is very inconvenient and troublesome and the productivity is greatly reduced. There is a problem that a heavy impact wrench should be put on and taken from time to time, There was a serious problem that frequent injuries occurred.

In addition, if an impact wrench is used in a closed space such as a factory, the inside of the factory will ring to cause a louder noise, and the worker is significantly less efficient in operation due to stress due to noise May lose their hearing, which is directly related to a decline in productivity.

In addition, since the operator must perform the work while confirming the fastening state of the stud bolt one by one, there is a problem that the work efficiency is considerably troublesome.

In addition, if the manual work is performed as described above, at least two workers must perform a work (only one operation is to fasten the stud bolts to the base material only with one operation of clamping using an impact wrench), so unnecessary work The increase in labor costs due to the waste of labor was one of the problems that can not be ignored.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to improve productivity by minimizing generation of noise due to vibration of a product and automatically detecting a stud bolt, And to provide a stud bolt fastener capable of automatically detecting a noise reduction and a bolt failure.

According to an aspect of the present invention,

Body:

A pair of fastening devices formed on the main body, the fastening device being composed of a servo motor, a shaft connected to the servo motor and rotated, and a fastening socket detachably attached to the shaft and fastening the stud bolt,

A torque sensor installed in each of the pair of fastening devices for measuring a torque of the shaft;

An elevating device installed between the main body and the pair of fastening devices to elevate and lower the pair of fastening devices;

A base material table installed on the main body and disposed under the pair of fastening devices and having a pair of stud bolts,

And a control panel installed in the main body for controlling operation of a pair of fastening devices and lift devices and stopping the operation of the servomotor of the fastening device provided with the torque sensor when the torque value is equal to or larger than the set value, .

In addition, in the present invention, a pair of false detection sensors for detecting stud bolts not fixed to a predetermined depth and outputting the detected stud bolts to the control panel are further reinforced.

Further, in the present invention, the control panel may further include a beacon light and a buzzer, and the operation of the beacon and the beacon may be controlled when a detection signal is input from the false lock sensor.

Further, in the present invention,

Base;

A support vertically installed on an upper surface of the base;

An LM guide configured by a guide rail disposed parallel to a longitudinal direction of the one side of the support, and a guide block movably coupled to the guide rail;

And a mounting table having a fixing portion disposed between the pair of guide rails and fixed to a guide block of the LM guide and having a pair of fastening devices installed and fixed thereto.

Further, in the present invention,

A cylinder fixed to the support, and a rod movably installed in the cylinder.

Further, in the present invention,

A cradle main body detachably mounted on a support of the main body;

And a finger portion extending in parallel outward from one surface of the cradle body and having a cross-shaped opening groove on the inside thereof.

Further, in the present invention,

The support of the main body is provided with a guide hole;

And the base material holder is fixed to the guide hole movably through a fastening means.

Further, in the present invention,

The base table may further include a stopper for restricting a downward movement of the base table.

Further, in the present invention,

The stopper

A support bolt detachably fastened to an upper surface of the cradle main body;

And an anti-loose nut fastened to the support bolt to prevent loosening of the support bolt.

According to the present embodiment, since the stud bolts fastened to the base material are automatically fastened by using the pair of fastening devices, the conventional method can be eliminated, which makes the operation considerably convenient. Particularly, The servo motor, torque sensor and control panel are applied instead of the impact wrench used as a tool for detecting the set torque during the tightening process, the operation of the corresponding servo motor is stopped to minimize the occurrence of vibration, The working environment is greatly improved. Therefore, it is expected that the productivity increase and the efficiency of the work greatly increase.

Further, according to the present embodiment, since the fastening state of the stud bolt can be easily grasped through the eccentricity sensor, the control panel, the warning light and the buzzer installed in the base material cradle, the defective rate of the product can be remarkably lowered, Since there is no need for the worker to directly check the work, the work can be considerably convenient, and an additional effect of greatly improving the work efficiency can be expected.

1 is a perspective view of a stud bolt fastener capable of automatically detecting noise reduction and bolt failure according to the present invention.
FIG. 2 is a bottom perspective view of a stud bolt fastener capable of automatically detecting noise reduction and bolt failure. FIG.
3 and 4 are a front view and a side view of a stud bolt fastener capable of automatically detecting noise reduction and bolt failure according to the present invention.
5A to 5G are views for explaining the operation relationship of a stud bolt fastener capable of automatically detecting noise reduction and bolt failure according to the present invention.

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

FIG. 1 is a perspective view of a stud bolt fastener capable of automatically detecting noise reduction and bolt failure according to the present invention, FIG. 2 is a bottom perspective view of a stud bolt fastener capable of automatically detecting noise reduction and bolt failure, 3 and 4 are a front view and a side view of a stud bolt fastener capable of automatically detecting a noise reduction and a bolt failure according to the present invention.

1 to 4, a stud bolt fastener according to a preferred embodiment of the present invention includes a main body 100, a lifting device 200, a pair of fastening devices 300 and 300 ', a torque sensor TS, TS ', A base material holder 400 and a control panel 500, and further includes a pair of false detection sensors 600 and 600'.

The stud bolt fastener according to the present invention automatically fastens the stud bolt ST fastened to the base material M using a pair of fastening devices 300 and 300 'to minimize the noise caused by vibration during the fastening process It is important to note that the defectiveness of the stud bolt (ST) was automatically detected through the use of the O-fastening sensor (600,600 ') and the defect rate was greatly reduced to improve the quality .

Referring to FIGS. 1 to 4, the main body 100 includes a base 110, a support 120, an LM guide 130, and a mounting base 140. In this embodiment, The pair of fastening devices 300 and 300 ', the base material holder 400, and the control panel 500, respectively.

The base 110 is a plate having a predetermined size and constitutes a bottom in the case of the present embodiment.

The support block 120 is a block assembled with a plate having a predetermined thickness, and is vertically installed on the upper surface of the base 110 in the present embodiment.

A pair of guide holes 121, which are opened along the longitudinal direction, are integrally formed on the lower side of the support base 120.

In the guide hole 121, a base material holder 400 to be described later is fixed to be vertically movable via fastening means (see FIG. 4, bolts, nuts and washers).

The LM guide 130 includes a pair of guide rails 131 arranged in parallel along the lengthwise direction of one side of the support base 120 in the present embodiment and a pair of guide rails 131, And a guide block 132 movably coupled to the guide block 132.

Here, the LM guide 130 functions to fix the mounting table 140 to be described below.

The mounting table 140 is a member having an overall 'B' shape.

In this embodiment, the mounting table 140 is integrally provided with a fixing part 141 disposed between the pair of LM guides 130. The fixing part 141 is provided with the elevating device 200, The rod 220 is fixed.

A pair of fastening devices 300 and 300 'is fixed to the mounting table 140.

In this embodiment, the mounting table 140 is described and shown in an 'a' shape. However, the mounting table 140 is merely one embodiment, and various modifications may be made in various forms as known in the art.

4, the elevating apparatus 200 is an actuator that performs linear motion by receiving air, and is composed of a cylinder 210 and a rod 220 removably installed in the cylinder 210, The lifting device 200 is controlled by the control panel 500.

The lifting device 200 includes a cylinder 210 mounted on a support base 120 of a main body 100 and a rod 220 connected to a fixed portion 141 of the mounting base 140, Air) to raise and lower the mounting table 140 provided with the pair of fastening devices 300 and 300 '.

According to the present embodiment, since the actuator is applied to the elevating device 200, the noise can be greatly reduced and the working environment can be improved.

However, this is merely one example, and it is possible to replace the lifting device 200 with a known mechanism such as a servomotor and a ball screw connected thereto, Any known one can be applied as long as it can perform the same functions as those of the first embodiment.

The pair of fastening devices 300 and 300 'includes a servo motor 310, a shaft 320 and a fastening socket 330 and is seated and fixed to a mounting table 140. In this embodiment, each of the stud bolts ST) in one direction.

A known torque sensor TS, TS 'is installed in the pair of fastening devices 300, 300'.

Here, the torque sensors TS and TS 'measure the torque and output the measured torque to the control panel 500.

The pair of fastening devices 300 and 300 'are operated and controlled by the control panel 500, respectively.

The operation of the pair of fastening devices 300 and 300 'and the torque sensors TS and TS' will be briefly described. When power is supplied from the outside, the servomotor 310 operates accordingly, The fastening socket 330 detachably fastened to the shaft 320 strongly tightens the stud bolt ST.

The torque sensor TS and TS 'continuously detect the torque and output the detected torque to the control panel 500 while the tightening socket 330 strongly tightens the stud bolt ST, When the respective torque values inputted from the torque sensors TS and TS 'are equal to or more than the set values, the operation of the fastening devices 300 and 300' provided with the torque sensors TS and TS 'is immediately stopped to stop the operation of the base material M Damage and defects can be prevented, and noise can be reduced, so that the working environment can be greatly improved.

After the tightening socket 330 is tightly coupled with the stud bolt ST as described above, the rotation direction of the servo motor 310 is switched by the control panel 500 so that the detachment of the tightening socket 330 from the stud bolt ST .

According to the present embodiment, since the stud bolts ST fastened to the base material M are automatically fastened by using the pair of fastening devices 300 and 300 ', the conventional method can be eliminated, The servo motor 310, the torque sensors TS and TS 'and the control panel 500 are applied instead of the impact wrench used as a tool for fastening the existing stud bolts ST When the set torque is detected during the fastening process, the operation of the servomotor 310 is stopped to minimize the occurrence of vibration, so that the noise can be reduced, thereby greatly improving the working environment.

Therefore, it is expected that the productivity increase and the efficiency of the work greatly increase.

The base material placing table 400 is a mounting member in which the base material M is removably inserted and placed therein. In this embodiment, the base material placing table 400 is disposed at the lower portion of the pair of fastening devices 300 and 300 ' The base material M having the stud bolts ST of the first embodiment is inserted into and detached therefrom.

The base table 400 includes a base 410 detachably mounted on the base 120 of the base 100 and a plurality of openings extending in a direction parallel to the outer surface of the base 410, And a stopper 430 for restricting the downward movement of the mounting base 140 of the main body 100. [

5A and 5B, the base material M is inserted transversely between the fingers 420, and the stud bolt ST fastened to the base material M is inserted into the bellows 420. In this case, And is exposed upward toward the tightening sockets 330 of the fastening devices 300 and 300 '.

In consideration of the shape of the base material (streamlined in the present embodiment), a groove-like groove is formed in the contact surface of the base 410 in contact with the base material M correspondingly.

Therefore, according to the present embodiment, when the base material M is mounted on the base material holder 400, the base material M can be more stably held by the plurality of fingers 420, Since the base material M is in close contact with the groove formed in the base material M, it is possible to solve the inconvenience that the base material M easily deforms even with a small external force and needs to be corrected again.

The stopper 430 is installed on the cradle body 410 to limit the descent to the cradle 140.

In this embodiment, the stopper 430 is composed of the support bolt 431 and the release preventing nut 432.

3 and 4, the support bolt 431 is installed on the upper surface of the mount base body 410, and the release preventing nut 432 is fastened to the support bolt 431.

Here, it is necessary to pay attention to the function of the stopper 430. [

In the present embodiment, the mounting table 140 and the fastening devices 300 and 300 'are vertically conveyed by the elevating device 200, and the elevating device 200 is driven by the air introduced as a power source When the inflow amount of the air is larger than the set amount, the rod 220 of the lifting device 200 has a correspondingly long stroke, and the tightening sockets 330 of the fastening devices 300 and 300 ' May excessively press the fingering 420 of the base material holder 400 and may eventually lead to damage to the fingering material 420 and cause the problem that the base material M can not be installed in the base material holder 400 have.

Therefore, according to the present embodiment, since the support bolt 431 of the stopper 430 catches the mounting block 140 moving downward more than necessary, the tightening socket 330 and the fingers 420 always maintain a constant gap It is possible to freely set the moving range of the mounting table 140 by loosening or tightening the supporting bolt 431 fastened to the mounting table body 410. In addition, And it is possible to solve the problem that the support bolt 431 is loosened through the loosening prevention nut 432 fastened to the support bolt 431. [

A guide hole 121 is formed in the support base 120 of the main body 100. The base support base 400 is fixed to the guide hole 121 by fastening means (see FIG. 4, bolts, nuts and washers) As shown in Fig.

According to the present embodiment, since the base material holder 400 is movable in the guide holes 121 of the support base 120, the stud bolts ST provided on the base material M can be elastically There is a very useful advantage because the height can be adjusted.

The control panel 500 is a controller capable of starting, stopping, speeding, and adjusting the torque. In this embodiment, the control panel 500 operates the elevating device 200 and the fastening devices 300 and 300 ' The torque sensors TS and TS 'installed in the fastening devices 300 and 300' respectively receive the torque values and the fastening devices 300 and 300 'provided with the corresponding torque sensors TS and TS' To stop the operation immediately.

The control panel 500 further includes a beacon light 510 and a buzzer 520.

Here, the beacon light 510 functions to inform the surroundings visually while emitting light, and the buzzer 520 emits sound to the outside to inform the surroundings.

The control panel 500 includes a manual upper and lower button for manually manipulating the upper and lower feeding device 300, upper and lower buttons for manually operating the elevating device 200, and a servomotor for the fastening devices 300 and 300 ' A reverse rotation button which can manually rotate the servomotor 310 in a reverse direction, a lift device 200 and a fastening device 300 or 300 ' A start button for automatically operating in accordance with the program, and a torque operation button for arbitrarily setting the torque value of the torque sensor TS, TS '.

According to the present embodiment, when the start button is pressed on the control panel 500, the elevating device 200 first descends the mounting table 140 on which the fastening devices 300 and 300 'are mounted, and the fastening devices 300 and 300' The tightening sockets 330 of the fastening devices 300 and 300 'are engaged with the stud bolts ST of the base material M to tighten the stud bolts ST up to a set torque, The fastening socket 330 is rotated in the direction opposite to the tightening socket 330 and is separated from the stud bolt ST and the elevating device 200 is moved up and down to the original position by mounting the fastening devices 300 and 300 ' do.

Since the stud bolts ST of the base material M are simultaneously fastened to each other through the fastening devices 300 and 300 ', the productivity is greatly improved. However, the stud bolts ST are normally fastened to the base material M. There was an inconvenience that the worker had to check the relevant information.

In order to solve the above problem, a pair of false detection sensors 600 and 600 'for detecting the stud bolts ST in the base material holder 400 and outputting them to the control panel 500 are provided.

The false detection sensor 600 or 600 'is a known sensor that can detect an object in a non-contact manner.

According to the present embodiment, after the stud bolts ST of the base material M are fastened through the fastening devices 300 and 300 ', the stud bolts ST are fastened to the fastening detection sensors 600 and 600' (See FIG. 5G), the error detection sensors 600 and 600 'output the error signals to the control panel 500 and the control panel 500 detects the detection signals 600 and 600' from the error detection sensors 600 and 600 ' The buzzer 520 and the buzzer 520 are operated simultaneously to notify the surrounding workers of the time and the sound acoustically.

Therefore, the worker can easily grasp the fastening state of the stud bolt ST through the beacon light 510 and the buzzer 520, thereby remarkably reducing the defect rate of the product. Therefore, the productivity can be greatly improved, Since you do not have to check it yourself, you can expect to have a side effect that can greatly improve your work efficiency because it is much easier to work with.

In the case of this embodiment, although the five-bolt detection sensor 600 or 600 'is described as a non-contact type sensor, this is merely an example, and any known one can be applied as long as it can perform the same function.

The operation of the present invention having the above-described configuration will be described.

5a to 5g are views for explaining the operation of a stud bolt fastener capable of automatically detecting a noise reduction and a bolt defect according to the present invention, wherein FIG. 5a is a cross-sectional view of the stud bolt fastener according to the present invention, 5B is a front view of FIG. 5A, FIG. 5C and FIG. 5D are views showing a process of lowering a landing gear to fasten a stud bolt using a fastening device, FIGS. 5E and 5F are views FIG. 5G is a view showing a process in which the stud bolt is incorrectly fastened. FIG.

5A and 5B, the stud bolts ST are temporarily fastened (temporarily fastened) to the base material M, and then the base bolts ST are fitted into the base material holder 400 on which the fingers 420 are formed.

Particularly, when the base material M is inserted into the base material holder 400, the stud bolts ST are installed so as to protrude more than the five fastening detection sensors 600 and 600 '(see FIG. 5B) It is preferable that the tightening sockets 330 of the devices 300 and 300 'are arranged on the same axis line.

When the start button formed on the control panel 500 is pressed in the state of being installed as described above, the elevating device 200 and the fastening devices 300 and 300 'are sequentially controlled by the preset program, Then,

5C and 5D, a push button formed on the control panel 500 in a state where the tightening sockets 330 of the fastening devices 300 and 300 'and the stud bolts ST of the base material M coaxially align with each other The power source (air) is supplied to the cylinder 210 of the lifting device 200 by the control panel 500 and the rod 220 is pushed downward by the control panel 500. As a result, The servomotors 310 are rotated (clockwise) while power is supplied to the clamping devices 300 and 300 ', and the servomotors 310 and 300' The rotation of the shaft 320 and the fastening socket 330 detachably mounted on the shaft 320 rotate together.

The tightening sockets 330 are coupled with the stud bolts ST to strongly tighten the stud bolts ST so that the pair of stud bolts ST fastened (temporarily fastened) to the base material M, The torque sensors TS and TS 'installed in the fastening devices 300 and 300' continuously detect the torque and output the detected torque to the control panel 500.

If the torque value input from the torque sensors TS and TS 'exceeds the set torque, the control panel 500 immediately stops the operation of the fastening devices 300 and 300' provided with the corresponding torque sensors TS and TS ' Thereby preventing damage of the base material M due to over-tightening of the stud bolts ST.

5E and 5F, when the fastening of the stud bolts ST by the fastening devices 300 and 300 'is completed, the fastening devices 300 and 300' are rotated (counterclockwise) ST so that the tightening sockets 330 are separated and the rods 220 of the lifting and lowering apparatus 200 are gradually raised so that the fastening devices 300 and 300 'are gradually raised to recover the original shape.

5G, when the stud bolts ST are detected by the fastening sensors 600 and 600 'after the fastening of the stud bolts ST by the fastening devices 300 and 300' is completed, The control unit 500 outputs a detection signal to the buzzer 520 and the buzzer 520 when the detection signal is inputted from the false detection sensor 600 or 600 ' So as to inform the surrounding workers visually and acoustically.

Therefore, the worker can easily grasp the fastening state of the stud bolt ST through the beacon light 510 and the buzzer 520, thereby remarkably reducing the defect rate of the product. Therefore, the productivity can be greatly improved, Since you do not have to check it yourself, you can expect to have a side effect that can greatly improve your work efficiency because it is much easier to work with.

After the series of steps is completed, the new mother material M is replaced and the above process is repeated.

According to the present embodiment, since the stud bolts ST fastened to the base material M are automatically fastened by using the pair of fastening devices 300 and 300 ', the conventional method can be eliminated, The servo motor 310, the torque sensors TS and TS 'and the control panel 500 are applied instead of the impact wrench used as a tool for fastening the existing stud bolts ST When the set torque is detected during the fastening process, the operation of the servomotor 310 is stopped to minimize the occurrence of vibration, so that the noise can be reduced, thereby greatly improving the working environment. Therefore, it is expected that the productivity increase and the efficiency of the work greatly increase.

According to the present embodiment, the fastening state of the stud bolt ST can be easily detected through the false detection sensor 600, 600 'installed on the base material holder 400, the control panel 500, the warning light 510, and the buzzer 520 It is possible to greatly reduce the defect rate of the product, so that the productivity can be greatly improved, and since it is not necessary for the operator to directly check the data, it is possible to considerably increase the work efficiency, have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. .

100: main body 110: base 120: support
130: LM Guide 140: Mounting table 200: Lift device
210: cylinder 220: rod 300.300 ': fastening device
310: Servo motor 320: Axis 330: Fastening socket
400: base material holder 410: base body 420:
430: stopper 500: control panel 510: warning light
520: Buzzer 600, 600 ': O-engagement detection sensor
TS, TS ': Torque sensor M: Base material ST: Stud bolt

Claims (9)

A pair of guide rails vertically installed on the upper surface of the base, a support having guide holes, a pair of guide rails arranged along the longitudinal direction of the support, a guide block movably coupled to the pair of guide rails, A main body having a fixing part disposed between the pair of guide rails and fixed to a guide block of the LM guide and having a pair of fastening devices fixedly installed;
A pair of fastening devices formed on the main body, the fastening device being composed of a servo motor, a shaft connected to the servo motor and rotating, and a fastening socket detachably mounted on the shaft and fastening the stud bolt;
A torque sensor installed in each of the pair of fastening devices and measuring a torque of the shaft;
An elevating device installed between the main body and the pair of fastening devices to elevate the pair of fastening devices;
A base body which is movably fixed to a guide hole of the support base through a fastening means, a base material having a pair of stud bolts, which can be inserted and removed and which is extended outwardly from one surface of the base body A support bolt which is detachably fastened to the upper surface of the base body to restrict a descent of the base and a stopper nut which is fastened to the support bolt to prevent the support bolt from being loosened, ;
And a control panel installed in the main body to control operations of the pair of fastening devices and the lift device and to stop the operation of the servomotor of the fastening device provided with the corresponding torque sensor when the torque value is equal to or larger than the set value, And the stud bolt fastener.
The method according to claim 1,
Wherein a pair of false detection sensors for detecting stud bolts not fixed to a predetermined depth and outputting the detected stud bolts to a control panel are further provided on the base material holder.
3. The method of claim 2,
Wherein the control panel further includes a warning light and a buzzer, and when the detection signal is input from the error detection sensor, operation of the warning light and the buzzer is controlled.
The method according to claim 1,
The lift device,
A cylinder fixed to the support, and a rod movably installed in the cylinder.
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