KR20160069016A - Nut fitting system and method for vehicle parts - Google Patents

Abstract

The present invention relates to a system for coupling a nut for a component of a vehicle and a nut coupling method using the same, and more specifically, relates to a system for coupling a nut for a component of a vehicle and a nut coupling method using the same, allowing a nut to be coupled by torque at a predetermined position according to each component of a vehicle when the component for the vehicle is coupled through the nut, thereby previously preventing omission of coupling and a fault in coupling. The system for coupling a nut for a component of a vehicle comprises a nut coupling part coupling a nut with a bolt temporarily coupled to a component of a vehicle; and a coupling a control part allowing the nut to be coupled at a preset coupling position according to a preset coupling order by controlling the nut coupling part. The system for coupling a nut for a component of a vehicle allows the nut to be coupled at the preset position according to the preset order and prevents a fault in coupling, which is caused by a mistake of an operator, thereby improving the production rate in an automobile assembling line.

Description

TECHNICAL FIELD [0001] The present invention relates to a nut fastening system for automobile parts, and a nut fastening method using the same.

The present invention relates to a nut fastening system for an automobile part and a nut fastening method using the nut fastening system. More particularly, the present invention relates to a nut fastening system for automobile parts, And a nut fastening system for an automobile part which can prevent a failure in fastening, and a nut fastening method using the same.

Generally, in an assembly line of an automobile, an operator attaches a nut to a bolt on an automobile part using an air impact wrench, and then, using a torque wrench, And car parts are assembled by performing the process of stitching again.

In addition, the operator carries out a process of marking and marking the fastening part after fixing the nut to the automobile parts.

On the other hand, since all of the fastening and fastening operations of the nut for assembling the automobile parts are performed manually by the operator, the working time is consumed for a long time, which lowers the productivity and causes a defect due to the operator's mistake.

That is, due to the operator's mistake, there is a problem that the fastening failure occurs such that the nut is fastened obliquely or the fastening order of the nut is reversed, or the nut at the same position is re-fastened or the fastening of the nut is omitted.

In addition, when a failure of fastening of an automobile part occurs, an assembling line of an automobile must perform a rework to fill a target quantity, resulting in an increase in work time and production cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a nut fastening system for an automotive part which can prevent a fastening failure of a nut due to a mistake of an operator during assembly of an automobile part, And a nut fastening method using the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to another aspect of the present invention, there is provided a nut fastening system for an automobile part which fastens a nut to an automobile part fastened with a bolt, the nut fastening system comprising: a nut fastening part for applying a rotational force to the nut to fasten the nut to the bolt; And a fastening control part for controlling the fastening part of the nut to fasten the nut according to a predetermined fastening position and fastening order.

In a preferred embodiment, when the nut fastening part operates differently from the fastening position or the fastening order, the fastening control part stops the nut fastening part and outputs a warning alarm.

In a preferred embodiment, the engagement control unit registers in advance the engagement position, tightening order, set torque, and set angle of a nut for each automotive part for controlling the nut fastening unit.

In a preferred embodiment, the engagement control unit includes position control means for sensing whether the nut fastening portion is out of the fastening position and the fastening order or in a normal position and controlling the operation of the nut fastening portion. And torque control means for controlling the torque of the nut fastening portion.

In a preferred embodiment, the torque control means determines a fastened state of the fastened nut based on the set torque and the set angle when the nut is fastened.

According to a preferred embodiment of the present invention, the display unit further includes a display unit for causing the nut fastening unit to display the fastening position, the fastening order, the set torque, and the set angle on a screen for a specific automotive part to be fastened with the nut.

In a preferred embodiment, the display unit further displays detailed part information, work quantity information, set torque and angle information, work state information, and work image information for each automotive part.

In a preferred embodiment, the display unit stores nut fastening information for an automotive part that has been fastened by the nut.

In a preferred embodiment, the printing unit further includes a printing unit for printing a label sticker on the automobile parts for which the fastening operation of the nut is completed.

According to another aspect of the present invention, there is provided a nut fastening method for fastening a nut to an automobile part fastened with a bolt, the method comprising the steps of: (1) setting the fastening position, fastening order, set torque, (2) fastening a nut to the automobile part according to the fastening position and the fastening order; And (3) determining a fastened state of the fastened nut based on the set torque and the set angle.

In a preferred embodiment, the step (2) stops the fastening of the nut and outputs a warning alarm when fastening a nut at a position different from the fastening position or the fastening order.

In a preferred embodiment, in the step (2), the fastening position, the fastening order, the set torque, and the set angle are displayed on the screen for a specific automobile part to be fastened with the nut.

In a preferred embodiment, the step (2) further displays detailed part information, work quantity information, set torque and angle information, work state information and work image information for the specific automobile parts.

In a preferred embodiment, before step (1), (A) beforehand registering the fastening position, the fastening order, the set torque, and the set angle for each of a plurality of kinds of automobile parts .

In a preferred embodiment, (4) the step of outputting the label sticker with the serial number is completed when the fastening of the nut is completed at all positions of the automobile part, and storing the nut fastening information for the fastened automobile part ; ≪ / RTI >

According to the above-mentioned problem solving means, the present invention provides a nut fastening part for fastening a nut to a bolt fastened to an automobile part and a fastening part for fastening the nut according to a predetermined fastening position and fastening order by controlling the nut fastening part Since the control unit is provided, it is possible to obtain an effect that the nut is fastened according to a predetermined position and order.

Therefore, according to the present invention, since the nut is fastened according to the predetermined position and order, it is possible to prevent the failure of the fastening due to the operator's mistake.

Further, the present invention prevents an increase in working time and production cost due to the occurrence of a failure of fastening, thereby improving the productivity in an automobile assembly line.

1 is a view for explaining a nut fastening system according to an embodiment of the present invention;
2 is a front view for explaining a nut fastening system;
3 is a view for explaining a screen of a display unit according to an embodiment of the present invention.
4 is a view for explaining a nut fastening method according to an embodiment of the present invention.

It should be understood that the specific details of the invention are set forth in the following description to provide a more thorough understanding of the present invention and that the present invention may be readily practiced without these specific details, It will be clear to those who have knowledge.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to FIGS. 1 to 4. FIG.

FIG. 1 is a view for explaining a nut fastening system according to an embodiment of the present invention, FIG. 2 is a front view for explaining a nut fastening system, and FIG. 3 is a view for explaining a screen of a display unit according to an embodiment of the present invention Fig.

1 to 3, a nut fastening system according to an embodiment of the present invention is for fastening a nut to an automobile part and includes a nut fastening part 110, a fastening control part 120, a display part 130, And a printing unit 140.

Here, the automobile parts are used in automobiles and are assembled by bolts and nuts. In particular, a wire for power supply may be a large current terminal fixed by the bolts and the nuts.

Meanwhile, to fasten the nut, a base on which the automotive part-shaped groove is formed to mount the automobile part, and a table for fixing and supporting the base may be further provided.

The nut fastening part 110 is provided to fasten the nut to a bolt fastened to a predetermined position of the automobile part and to apply a rotational force to the nut.

Also, the operator can perform the operation of fastening the nut to the bolt of the automobile part, which is placed on the base, using the nut fastening part 110. The nut fastening part 110 may be an electric nut runner.

The tightening control unit 120 is for controlling the nut fastening unit 110. The fastening position, tightening order, set torque, and set angle of each nut for controlling the nut fastening unit 100 are set in advance A position control means 121, and a torque control means 122, as shown in Fig.

In addition, the information registered in the connection control unit 120 may be called by a user command of the operator, or may be provided so that the barcode corresponding to the information is recognized and called.

Here, in order to use the barcode, a barcode corresponding to each piece of information must be previously generated and attached to each of the automobile parts, and a barcode scanner for recognizing the barcode may be further provided.

In addition, the engagement control unit 120 may further include a torque arm to which the nut coupling unit 110 is mounted.

The position control means 121 is for controlling the nut fastening portion 110 to fasten the nut according to the fastening position and the fastening order and the nut fastening portion 110 fastens the nut Or whether or not to fasten the nut at a position out of the fastening position and the fastening order.

The position control means 121 stops the nut fastening portion 110 and outputs a warning alarm when the nut fastening portion 110 attempts to fasten the nut different from the fastening position or the fastening order by the operator Respectively.

The position control means 121 may be a controller for recognizing the position of the nut fastening portion 110 and controlling the operation of the nut fastening portion 110. A position sensor or an encoder for detecting the position of the nut fastening portion 110 And the like.

The torque control means 122 is for controlling the torque of the nut coupling portion 110. The torque control means 122 detects the torque and the angle of the nut coupling portion 110 and then compares the set torque and the set angle, As shown in Fig.

The fastened state of the fastened nuts can be determined to be good or bad, for example, and can be displayed on the display unit 130 to be described later. That is, the operator can check the fastening state of the nut in real time.

Also, the torque control means 122 may be provided as a controller for controlling torque, on and off operations of the nut fastening portion 110.

Therefore, when the nut is fastened by the operator, the nut is screwed in an oblique direction, the fastening sequence of the nut is reversed, or the fastening failure occurs due to the re-fastening of the nut at the same position or the missing fastening of the nut Can be prevented in advance.

The display unit 130 displays on the screen the fastening position and tightening order of the nuts so that the operator can check the proper position and order of fastening the nut in real time.

The display unit 130 may be provided as a computing device including a computer, and may further include a monitor for displaying a fastening position and a tightening order of the nut.

3, the display unit 130 displays the detailed parts information 1, the work quantity information 2, the set torque and the angle information 3, the work state information 4, So that the operation image information 5 is displayed on the screen. Here, the information displayed on the display unit 130 is previously registered information.

The detailed part information 1 may be information including the type of the vehicle, the item, the part number, the lot number, the date and time of production, and the type of the nut to be fastened.

The work quantity information 2 may be information including the quantity of the automobile parts produced, the quantity of the fastened parts of the nuts, and the quantity of the fastened parts of the nuts.

The set torque and angle information 3 may be information including minimum torque, current torque, maximum torque, minimum angle, current angle and maximum angle. Here, the set torque for the nut and the set angle can be displayed.

In addition, the work state information 4 may be information indicating occurrence of wait for work, completion of fastening, failure of fastening, and occurrence of a system error.

In addition, the operation image information (5) displays an image of the automobile part and a position and order of fastening the nut. That is, the fastening position and the tightening order for the nut are displayed.

Also, the display unit 130 is configured to store nut fastening information for the fastened automotive parts. Also, the nut fastening information stored in the display unit 130 may be information including the fastening position, the fastening order, the set torque, the set angle, and the detailed part information.

In addition, each piece of information stored in the display unit 130 may be provided so as to input the part number or the rat number, and to search and output the part number or the rat number.

The printing unit 140 is provided to print a label sticker for an automobile part whose fastening operation of the nut is completed. At this time, the serial number of the automobile part is printed on the label sticker. The printing unit 140 may be a label printer.

4 is a view for explaining a nut fastening method according to an embodiment of the present invention.

Referring to FIG. 4, a nut tightening method performed in a nut tightening system according to an embodiment of the present invention will be described.

First, the fastening position, tightening order, set torque, and set angle of the nut with respect to the automotive part are registered (S100).

At this time, a setting file including the fastening position, the fastening order, the set torque, and the set angle is registered for each of a plurality of kinds of automobile parts by the fastening control unit of the nut fastening system.

Practically, the setting file registered in the engagement control section includes detailed part information including a vehicle type, an item, a part number, a lot number, a date and time of production and a type of a nut to be fastened, Setting torque and angle information including the minimum torque at the time of starting the engine, the current torque, the maximum torque, the minimum angle, the current angle and the maximum angle, and the operation image information including the image of the automobile part and the position and order of tightening the nut .

In addition, the setting file may be called by a user command of the operator, or may be provided so that the barcode corresponding to the setting file is recognized and called.

Next, the fastening position, the fastening order, the set torque, and the set angle for an automotive part to be fastened with the nut are set (S200).

At this time, when the automobile parts are prepared, an operator can input a user command to call the configuration file or recognize the barcode using a barcode scanner.

In the fastening control unit of the nut fastening system, the setting file is loaded, and the fastening position, the fastening order, the set torque, and the set angle are set for the automobile parts.

Next, the nut is fastened to the automobile part according to the fastening position and the tightening sequence (S300).

At this time, the operator uses the nut fastening portion of the nut fastening system to fasten the nut. The bolts may be fastened to the automobile parts.

Further, the position control means of the engagement control portion senses whether the nut fastening portion fastens the nut at the normal position, or whether the nut is fastened at the fastening position and the position out of the fastening sequence.

Further, when the operator tries to fasten the nut at a position different from the fastening position or the fastening order, the position control means stops the operation of the nut fastening part so as to prevent the fastening of the nut and outputs a warning alarm.

Therefore, the failure of the fastening that occurs due to the mistake of the operator, the tightening procedure of the nut is reversed, or the nut is re-fastened at the same position or the fastening of the nut is omitted.

Further, in the display unit of the nut fastening system, the fastening position, the fastening order, the set torque, and the set angle with respect to the automobile component in which the nut is fastened can be displayed on the screen so that the operator can check in real time.

At this time, the display part may further display the detailed parts information, the work quantity information, the set torque and angle information, the work state information, and the work image information.

The work quantity information is information including the quantity of the automobile parts produced, the quantity of the fastened parts of the nuts and the quantity of the fastened parts of the nuts, and the work state information includes at least one of waiting for work, As shown in FIG.

Next, it is determined whether or not the fastened state of the nut fastened to the automotive part is detected (S400).

At this time, the torque control means of the engagement control portion detects the torque and the angle of the nut fastening portion, compares the torque and the angle on the basis of the set torque and the set angle, and determines whether the fastened state of the nut is good or bad.

Further, the fastening state of the nut is displayed on the display unit, and the operator can check the fastening state of the nut in real time.

Next, when the nut is fastened to all positions of the automobile parts, a label sticker having a serial number is output (S500).

At this time, the fastening control unit causes the printing unit to output the label sticker, and the nut fastening information of the fastened automotive part is stored in the display unit.

The nut fastening information may be stored in the display unit or may be stored in a separate database. Further, the nut tightening information can be searched and output by inputting a part number or a rat number later.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

110: nut fastening portion
120:
121: Position control means
122: Torque control means
130:
140:

Claims (15)

1. A nut fastening system for an automotive part which fastens a nut to an automobile part fastened with a bolt,
A nut fastening part for applying a rotational force to the nut to fasten the nut to the bolt; And
And a fastening control part for controlling the fastening part of the nut to fasten the nut according to a predetermined fastening position and fastening order.
The method according to claim 1,
Wherein the engagement control part stops the nut fastening part and outputs a warning alarm when the nut fastening part operates differently from the fastening position or the fastening order.
3. The method of claim 2,
Wherein the fastening control unit registers in advance the fastening position, the fastening order, the set torque, and the set angle of the nut for each automotive part for controlling the nut fastening unit.
3. The method of claim 2,
The tightening control unit
Position controlling means for detecting whether the nut fastening portion is out of the fastening position and the fastening order or in a normal position and controlling the operation of the nut fastening portion; And
And a torque control means for controlling a torque of the nut fastening portion.
5. The method of claim 4,
Wherein the torque control means determines the fastened state of the fastened nut based on the set torque and the set angle upon completion of the fastening of the nut.
The method according to claim 1,
And a display unit for causing the nut fastening unit to display on the screen the fastening position, the fastening order, the set torque, and the set angle for a specific automotive part to be fastened with a nut. Nut fastening system.
The method according to claim 6,
Wherein the display unit further displays detailed part information, work quantity information, set torque and angle information, work state information, and work image information for each of the automobile parts.
The method according to claim 6,
Wherein the display unit stores nut fastening information for an automobile part having been fastened by the nut.
The method according to claim 1,
And a printing unit for printing a label sticker for an automobile part whose fastening operation of the nut is completed.
A nut fastening method for fastening a nut to an automobile part fastened with a bolt,
(1) setting a fastening position, a fastening order, a set torque, and a set angle of a nut to the automobile part;
(2) fastening a nut to the automobile part according to the fastening position and the fastening order; And
(3) determining a fastened state of the fastened nut based on the set torque and the set angle.
11. The method of claim 10,
Wherein the step (2) is for stopping the fastening of the nut and outputting a warning alarm when fastening a nut at a position different from the fastening position or the fastening order.
12. The method of claim 11,
Wherein the step (2) includes displaying on the screen the engaging position, the engaging procedure, the set torque, and the set angle for a specific automotive part to be fastened with the nut.
13. The method of claim 12,
Wherein the step (2) further displays detailed part information, work quantity information, set torque and angle information, work state information, and work image information for the specific automobile parts.
11. The method of claim 10,
Before the step (1)
(A) registering the engagement position, the engagement order, the set torque, and the set angle in advance for each of a plurality of types of automotive parts.
11. The method of claim 10,
(4) a step of outputting a label sticker having a serial number when the fastening of the nut is completed at all positions of the automobile part, and storing the nut fastening information for the fastened automobile part Fastening method.

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