KR100856115B1 - A sensing device for welding burr in a frame and method for operation the same - Google Patents

Abstract

An apparatus for sensing a welding burr on a frame part is provided to prevent operation delay in the assembling step or stopping of the assembling process by sensing the welding burr on the frame part more accurately, thereby pre-sensing defects due to the welding burr in the process of assembling the part through a nut pressed to the frame part, and a method for operating the apparatus is provided. An apparatus for sensing a welding burr on a frame part comprises: two welding burr sensing parts(10) including a power supply part(11), a power and data connecting line(12), a moving block(15), a connecting block(14), a fixing part(13), a vertical transfer part(16), a motor drive part(17), and a welding burr inspection part(18); a frame fixing device part(90) positioned between the welding burr sensing parts to fix the frame part by allowing a fixing pin(932) to press a frame part(80) while a frame fixing part(93) descends; a base part(20) on which left and right moving rails(21) are installed to move the welding burr sensing parts from side to side; a table(30) having two rails(32) formed on a top face thereof in the X-axis direction, a first worm gear(33) formed in parallel to the rails, and a first adjusting handle(31) for adjusting the first worm gear; a first moving table(40) having rail grooves and a first rack gear formed on a bottom face thereof, the first rack gear being formed in parallel to the rail grooves, and two rails(42), a second worm gear(43), and a second adjusting handle(41) formed on a top face thereof; a second moving table(50) having two rail grooves formed in the Y-axis direction on a bottom face thereof, a second rack gear formed in parallel to the rail grooves on the bottom face thereof, and an optical sensor(51) adhered to a top face thereof to sense the descending position of the welding burr inspection part; and a worktable(60) which is joined with the top face of the second moving table, and on which a fixing groove and a operation groove are formed.

Description

A sensing device for welding burr in a frame and method for operation the same}

The present invention relates to a frame part welding burr sensing device, and more particularly to a frame part welding burr detecting device for detecting a welding burr generated at the time of the pressing with respect to a nut joined in a crimping manner to the frame part. It is about.

Conventionally, in the case of a nut that is generally crimped to a frame part or the like, four corner portions of the lower part of the nut are joined to the frame part or the like by a crimping method by high temperature heat and pressure. This crimping method is to be welded through the instantaneous high pressure, the joining method is simple, there is an advantage that can be firmly fixed by thermal crimping. However, in the welding process of the welding, foreign matters, such as a metal material melted by heat, may be splashed or inserted into the nut coupling part, thereby causing a problem in the nut coupling part. If such foreign matter is inserted into the nut, it is gradually cooled and hardened, so that the bolts cannot be smoothly connected to other parts through the nut connection part, which causes problems in the production process interruption or the efficiency of the work. Done.

In order to solve the problems as described above, the present invention by setting the appropriate tightening torque for the nut is pressed to the frame part and the part through the torque sensor, by tightening the nut of the welding burr inspection part by the welding burr generated inside the nut By detecting the increase and decrease of the torque value at the time of passing, the welding burr of the frame part can be detected more accurately, and through this, the failure by the welding burr in the process of assembling the part through the nut pressed on the frame part can be detected in advance. . It is an object of the present invention to provide a frame part welding burr detection device and a method of operating the same, which can prevent work delay and interruption of the assembly process in the subsequent assembly step by the preliminary detection work.

In order to achieve the object, in the welding burr detection device for a frame part, a power supply unit for supplying power for driving a torque sensor and a motor, and a power supply and data for connecting and transmitting the power supply unit and the control unit A connecting block, a moving block for moving the welding bearer detection unit to the left and right through the rail fixed to the base portion, a connecting block for connecting the moving block and the welding bearer detection unit, and a welding burr detection unit to the connection block A fixing part for fixing, a shanghai sending part for allowing the welding burr detection part to move up and down for the nut welding burr inspection, a motor driving part for driving a motor equipped with a torque sensor to detect the welding burr in the nut, and Two welding burrs composed of a welding burr inspection unit coupled to the motor driving unit for inspecting the welding burr while passing through the nut. Unit; A frame fixing device unit positioned between the two welding burr detecting units and fixing the frame parts fixed to the work table by pressing the fixing pins while the frame fixing unit descends; A base part provided with a rail such that the welding burr detecting part can move from side to side; A table portion including two rails formed on an upper surface of the table in an X-axis direction, the first worm gear being formed parallel to the two rails, and a first adjustment knob for adjusting the first worm gear; Two rail grooves in the X-axis direction are formed under the first moving table, and a first rack gear engaged with the first worm gear is formed in parallel with the rail groove, and a second moving table is located above the first moving table. It consists of two rails formed in the Y-axis direction for the movement of the movement, a second worm gear formed in the Y-axis direction engaged with the second rack gear below the second moving table, and a second adjustment knob for adjusting the second worm gear. A first moving table; Two rail grooves in the Y-axis direction and a second rack gear engaged with the second worm gear are formed parallel to the rail grooves below the second moving table, and a work formed on a work table above the second moving table. A second moving table having an optical sensor attached to one side for detecting a falling point of the welding burr inspection portion which is vertically lowered through the groove; The working groove is formed with a fixing groove for fixing the frame parts coupled to the upper surface of the second moving table, and a working groove through which the welding burr inspection part descends vertically to detect the burrs inside the nut.

In particular, in the case of the motor driving unit, two couplings connecting the upper shaft and the lower shaft, a torque sensor for measuring the torque value by the motor drive, a nut inspection motor connected to the torque sensor for driving the welding burr, torque It consists of a power and data cable that can transmit the measured value through the sensor.

In addition, even in the case of the welding burr inspection, it is possible to adopt, respectively coupled according to the size and type of the crimped nut.

In addition, the frame fixing device is characterized in that the fixing cylinder is fixed to the left and right moving rails of the power supply and the base portion and the movable cylinder which can be moved up and down and the fixing pin is connected to the moving cylinder.

In addition, the fixing groove of the workbench is manufactured in each shape according to the shape of the frame for detecting the welding burr, it is possible to detect the welding burr for various frame parts.

In order to achieve the object, a method of operating a welding device for detecting a frame part includes: a first step of first turning on a power supply unit; A second step of inputting an initial set value of the torque sensor; A third step of starting operation while the start button is turned on; A fourth step of turning on the torque sensor; A fifth step in which the frame fixing part descends; A sixth step in which Shanghai Shipping descends; At this time, the seventh step of lowering while the welding inspection portion rotates in the nut tightening direction while the nut inspection motor is operated; An eighth step of comparing the measured torque value with the initially set torque setting value while passing through the nut fastening portion of the frame part; A ninth step in which a red lamp is turned on as a result of a failure in the nut when the torque measurement value is larger than the set tightening torque setting value as a result of the comparison; If the torque measurement value is smaller than or equal to the set tightening torque setting value, the welding burr inspection part which has been continuously lowered as the welding burr is not detected by the optical sensor installed in the second moving table at a certain point passes through the working groove. A tenth step of detecting a falling point; An eleventh step in which the Shanghai sending unit is raised again when the red lamp is lit or the welding burr inspection unit is detected by the optical sensor; In this case, a twelfth step of driving the nut inspection motor in reverse rotation in a direction opposite to the fastening direction so as to separate the welding burr inspection portion into the upper portion of the nut fastening portion; A thirteenth step of determining whether or not the shanghai sending unit 16 returns to its original position; In the thirteenth step, when the shanghai sending unit 93 returns to its original position, the frame fixing unit 93 includes a fourteenth step of raising.

As described above, the present invention is a device for detecting a frame part welding burr, the frame part is fixed by a fixed part of the work table, the work table is in the X-axis and Y-axis direction through the first moving table and the second moving table It is adjustable so that the welding burr detection device can precisely set the position of the pressed nut on the frame part, and the frame fixing device located between the two welding burr detection parts is fixed to prevent deviation of the frame part from the workbench during operation. Press and fix the frame part by welding. The welding burr inspection part can be replaced and fastened according to the size and type according to the type of nut pressed on each frame, and the frame is set by setting the tightening torque passing through the nut through the torque sensor. After welding nut of nut squeezed to the part, it is possible to accurately detect the defect in the part fastening step in advance. Can be. In addition, the fixed groove of the workbench can also be manufactured according to the size of each frame part, so that the welding burr can be detected even for the frame parts of different sizes. By doing so, foreign matters detected by welding inside the nut pressed on the frame part are removed and defects are removed in advance, thereby facilitating the process of work in the step where the nut part of the subsequent frame part is combined with the part, and related products. By minimizing the defects of the assembly, it is effective to increase the speed and efficiency of the assembly process of the frame parts.

1 is a perspective view of a frame part welding burr detecting apparatus according to the present invention, FIG. 2 is an exploded view of a first moving table, a second moving table and a working table of the frame part welding burr detecting apparatus according to the present invention, and FIG. The front view of the frame part welding burr detection apparatus which concerns on this invention.

4 is a side view of a frame part welding burr detection apparatus according to the present invention, FIG. 5 (a) is a bottom view of a second moving table of the frame part welding burr detection apparatus according to the present invention, and FIG. 1 Bottom view of the moving table.

6 (a) is a crimped nut of an engine frame, which is a kind of frame component according to the present invention, and FIG. 6 (b) is a coupling diagram of a nut crimped to the engine frame.

 Figure 7 is a flow chart illustrating the operation of the operation according to the operating method of the frame part welding burr detection apparatus according to the present invention.

Hereinafter, the components will be described with reference to the drawings.

1 is a perspective view of a frame part welding burr detecting apparatus according to the present invention, which includes two welding burr detecting portions 10, a frame fixing device portion 90, a base portion 20, a table 30, The first moving table 40, the second moving table 50, the work table 60, and the control part 70 are comprised.

The two welding burr detection unit 10 is a power supply unit 11 for supplying power for driving a torque sensor and a motor, and a power supply unit 11 and a control unit 70 to transmit and receive power and data. And a moving block 15 for moving the welding burr sensing unit 10 to the left and right through the data connecting line 12 and the rail 21 fixed to the base 20, and welding with the moving block 15. A connection block 14 for connecting the burr detecting unit 10, a fixing part 13 for fixing the welding burr detecting unit 10 to the connection block 14, and a welding burr for nut welding burr inspection. Shanghai transport unit 16, which allows the inspection unit 18 to drive up and down, and a motor driving unit 17 to which the nut inspection motor 174, which is equipped with the torque sensor 172, to drive the welding burr inside the nut, is driven. And a welding burr inspection unit 18 to which the motor driving unit 17 for inspecting the welding burr while passing through the nut is coupled. It is configured.

The shanghai sending unit 16 is driven up and down to access the frame parts of the worktable 60, the welding burr inspection unit coupled to the nut coupling portion 82 of the crimping nut 81 by the motor driving unit (17). The rotation torque value of (18) is measured, and the torque value set by the controller 70 is compared with the measured torque value to select defective or not frame parts. In particular, the welding burr inspection unit 18 can be adopted and combined according to the size and type according to the type of nut to be pressed in different frames.

In particular, the motor driving unit 17 includes two couplings 171 and 173 for connecting the upper and lower shafts, a torque sensor 172 for measuring torque values by motor driving, and a torque sensor 172 as shown in FIG. It is coupled to the nut inspection motor 174 which is connected to and driven for the welding burr, and a power and data connection line 175 that can transmit the measured value through the torque sensor 172. The motor driving unit 17 measures the torque value measured while passing through the nut coupling unit 82 of the welding burr inspection unit 18 from the torque sensor 172, and transmits the data thereof to the control unit 70, and accordingly sends a shanghai transmission unit ( 16) under the control of the ascending or descending work.

In addition, the frame fixing device 90 is positioned between the two welding burr detection unit 10 by the fixing pin 932 while the frame fixing portion 93 is lowered to the frame part fixed to the work table 60. Press to lock.

The base portion 20 is a frame in which the welding burr detection unit 10 is moved to the left and right through the left and right moving rails 21 are installed so that the welding burr detection unit 10 can move left and right. It is possible to adjust to the interval of the pressing nut 81 of the component.

The table 30 has two rails 32 in the X-axis direction formed on an upper surface thereof, and controls the first worm gear 33 and the first worm gear 33 formed parallel to the two rails. It consists of a first adjustment knob (31) for. The first movement table is movable in the X axis direction by the rail 32, and the first movement table 40 is moved in the X axis direction through the first worm gear 33 and the first adjustment knob 31. Fine adjustment of the interval is possible.

The first moving table 40 has two rail grooves 45 formed in an X-axis direction at a lower surface thereof, and a first rack gear 44 engaged with the first worm gear 33 has the rail grooves ( 45 is formed in parallel with the upper surface of the first moving table 40, two rails 42 in the Y-axis direction for the movement of the second moving table 50, and the lower of the second moving table 50. It consists of a second worm gear 43 is fastened in parallel with the second rack gear 52 formed in the Y-axis direction of the second control knob 41 for adjusting the second worm gear 43. Accordingly, as shown in FIG. 2, the first movable table 40 is movable in the X axis direction by adjusting the worktable 60 by the two rails 32 in the X axis direction provided on the table 30. do.

The second moving table 50 has two rail grooves 53 in the Y-axis direction on a lower surface thereof, and a second rack gear 52 engaged with the second worm gear 43 is provided with the rail grooves 53. Is formed in parallel, the upper surface of the second moving table 50, an optical sensor for detecting the falling point of the welding burr inspection unit 18 is lowered vertically through the working groove 61 formed in the work table 60 ( 51) is attached. The optical sensor 51 in particular detects the falling point of the welding burr inspection unit 18 descending through the working groove 61 so as to smoothly repeat the operation by controlling the falling point of the shanghai sending unit 16. . The second moving table 50 is installed as shown in FIG. 2 to allow the worktable 60 to be moved and adjusted in the Y-axis direction.

The working table 60 is vertically fixed so that the fixing groove 62 for fixing the frame part 80 and the welding burr inspection part 18 detect the welding burr of the nut fastening part 82 inside the crimping nut 81. It consists of a working groove 61 that can be passed down. In particular, the fixing groove 62 can be manufactured and installed according to the operation of different frames, so that the detection of the welding burr for various frames enables selection of defective products.

In addition, the control unit 70 detects a welding burr of the frame part and starts the operation of the red lamp 71 and the power switch 72 of the entire frame part detecting device and the frame part welding burr detecting device. The button 73 is engaged.

Referring to the flow chart of Figure 7 the operation method of the welding device for detecting the frame component welded as described above is as follows.

First, when the power of the power supply is turned on (S10), the initial setting value of the torque sensor 172 is input (S20), the start button is turned on (ON) and the operation of the frame part welding burr detection device starts (S30).

 The torque sensor 172 is turned on when the operation of the frame part welding burr detection device is started (S40), and the frame fixing part 93 is lowered (S50) to fix the frame part, and at the same time, for work. The sending unit 16 descends (S60).

At this time, while the nut inspection motor 174 operates, the welding burr inspection unit 18 starts to descend while rotating in the nut tightening direction (S70). When the welding burr inspection part 18 passes through the nut fastening part 82 of the frame part 80, the control part 70 compares the torque value measured while passing through the nut fastening part, and an initially set torque setting value ( S80), when the torque measurement value is larger than the set tightening torque setting value, the red lamp 71 is turned on by inserting foreign matter into the nut coupling part 82 by welding or the like (S90). If the torque measurement value is smaller than or equal to the set tightening torque setting value, the welding burr is not detected and the welding burr inspection part has passed through the nut connection part. In this case, the welding burr inspection part 18 descending while passing through the working groove 61 is provided. ) Is detected by the falling point through the optical sensor 51 installed in the second moving table (50) (S100). When the red lamp 71 is turned on or when the welding burr inspection unit 18 is detected by the optical sensor 51, the shanghai sending unit 16 is raised again (S110), and when the welding burr inspection unit 18 is raised, In order to separate and rise from the nut fastening part 82, the nut inspection motor 174 is driven to rotate in the opposite direction to the fastening direction of the nut (S120). It is determined until the Shanghai sending unit 16 returns to the original position to return (S130), and before returning, the frame fixing unit 93 is fixed so as not to be separated from the workbench by pressing the frame parts, and the Shanghai sending unit 16 is raised. When it returns to the original position, the frame fixing portion 93 rises (S140), and the operation ends. By repeating these steps, the welding burr detection device of the frame component is operated.

1 is a perspective view of a frame part welding burr detection apparatus according to the present invention.

Figure 2 is an exploded view of the first moving table, the second moving table and the workbench of the apparatus for detecting welded frame parts according to the present invention.

3 is a front view of a frame part welding burr detection apparatus according to the present invention.

Figure 4 is a side view of the frame component welding burr detection apparatus according to the present invention.

Figure 5 (a) is a bottom view of the second moving table of the frame part welding burr detection apparatus according to the present invention, Figure 5 (b) is a bottom view of the first moving table.

6 (a) is a crimped nut of an engine frame, which is a kind of frame component according to the present invention, and FIG. 6 (b) is a coupling diagram of a nut crimped to the engine frame.

Figure 7 is a flow chart illustrating the operation of the frame component welding burr detection apparatus according to the present invention.

<Explanation of Signs of Major Parts of Drawings>

 10: welding burr detection unit 11: power supply unit

 12: power and data connection line 13: fixed part

 14: connection block 15: moving block

 16: Shanghai shipping 17: motor drive

 171: coupling 172: torque sensor

 173: coupling 174: nut inspection motor

 175: power and data connection line 18: welding burr inspection unit

 20: base portion 21: left and right moving rail

 30: Table 31: first adjusting knob

 32: rail 33: first worm gear

 40: first moving table 41: second adjusting knob

 42: rail 43: second worm gear

 44: first rack gear 45: rail groove

 50: second moving table 51: optical sensor

 52: second rack gear 53: rail groove

 60: workbench 61: work groove

 62: fixing groove 70: control unit

 71: red lamp 72: power button

 73: start button 80: engine frame parts

 81: crimping nut 82: nut connection part

 90: frame fixing unit 91: power supply unit

 92: fixing part 93: frame fixing

 931: cylinder 932: fixed pin

Claims (6)

In the welding burr detection device of the frame parts, A power supply unit 11 for supplying power for driving the torque sensor 172 and the nut inspection motor 174, and a power and data connection line connecting the power supply unit 11 and the control unit 70 to transmit and receive power and data. 12 and a movable block 15 for moving the welded bubble detector 10 to the left and right through the rail 21 fixed to the base 20, and the movable block 15 and the welded bubble detector. A connection block 14 for connecting the 10, a fixing part 13 for fixing the welding burr detecting part 10 to the connecting block 14, and a welding burr detecting part for inspecting a nut welding burr ( A shanghai conveying unit 16 allowing 10 to be driven up and down, a motor driving unit 17 driving a nut inspection motor 174 equipped with a torque sensor 172 to detect a welding burr inside the nut, It consists of a welding burr inspection unit 18 coupled with the motor driving unit 17 to inspect the welding burr while passing through the nut coupling portion 82. Two welding burr detection units 10; The frame fixing device unit 90 positioned between the two welding burr detection units 10 to fix the frame part fixed to the work table 60 by pressing the fixing pin 932 while the frame fixing unit 93 descends. Wow; A base part 20 provided with a left and right moving rail 21 to allow the welding burr detecting part 10 to move from side to side; Two rails 32 are formed on the upper surface in the X-axis direction, and the first worm gear 33 and the first adjustment knob for adjusting the first worm gear 33 are formed parallel to the two rails. A table 30 composed of 31; A rail groove 45 into which two rails 32 in the X-axis direction are inserted is formed on a lower surface thereof, and a first rack gear 44 engaged with the first worm gear 33 is the rail groove 45. The second worm gear is formed in parallel to the upper surface and is coupled to the two rails 42 for the movement of the second moving table 50 and the second rack gear 52 below the second moving table 50. A first moving table (40) comprising a second adjusting knob (41) for adjusting the second worm gear (43); On the lower surface, two rail grooves 53 in the Y-axis direction and a second rack gear 52 engaged with the second worm gear 43 are formed in parallel with the rail groove 53, and on the upper surface of the work table. A second moving table 50 having an optical sensor 51 attached thereto for detecting a falling point of the welding burr inspection unit 18 descending vertically through the working groove 61 formed in the 60; Fixed groove 62 for fixing the frame part 80, and the welding groove inspection portion 18, the working groove passed vertically downward to detect the welding burrs of the nut coupling portion 82 of the crimping nut 81 ( 61. A frame component welding burr sensing device, characterized in that the work table (60) composed of 61) is coupled to the upper surface of the second moving table (50). The method of claim 1, The welding burr inspection unit 18 is a frame part welding burr detection apparatus, characterized in that the coupling is possible by adopting the appropriate one according to the type and size of the crimping nut of the frame component. The method of claim 1, The frame fixing device 90 is a movable cylinder 931 which is movable up and down to fix the fixing part 92 and the frame part fixed to the left and right moving rails 21 of the power supply 91 and the base part 20. And a fixing pin (932) is attached to the moving cylinder (931). The method of claim 1, The motor driving unit 17 is connected to two couplings 171 and 173 connecting the upper and lower shafts, a torque sensor 172 for measuring torque values by motor driving, and a torque sensor 172 to detect a welding burr. The nut inspection motor 174 is driven for the frame component welding burr sensing device, characterized in that consisting of a power and data connection line 175 that can transmit the measured value through the torque sensor (172). The method of claim 1, Fixing groove 62 of the worktable 60 is a frame component welding burr detection apparatus, characterized in that the production of each shape according to the shape of the frame for welding burr detection. In the operation method of the frame part welding burr detection device, A first step S10 in which the power button 72 of the power supply unit 11 is turned on; A second step S20 of setting an initial torque value in the torque sensor 172; A third step S30 of starting operation while the start button 73 is turned on; A fourth step S40 of turning on the torque sensor 172; A fifth step (S50) in which the frame fixing part 93 descends; A sixth step (S60) in which the Shanghai sending unit 16 descends; A seventh step S70 in which the welding inspector 18 is lowered while the nut inspecting motor 174 operates, while the weld inspecting unit 18 rotates in the nut tightening direction; An eighth step S80 of comparing the measured torque value with the initially set torque setting value while passing through the nut fastening portion 82 of the frame part; A ninth step (S90) in which the red lamp (71) is turned on as a result of a failure in the nut if the torque measurement value is larger than the set tightening torque setting value; When the torque measurement value is smaller than or equal to the set tightening torque setting value, since the welding burr is not sensed, the falling welding point inspection unit 18 is lowered by the optical sensor 51 installed in the lower working groove 61. A tenth step (S100) detected; When the red lamp (71) is turned on or the welding burr inspection unit 18 is detected by the optical sensor 51, the eleventh step (S110) and the Shanghai sending unit 16 is raised again; A twelfth step (S120) of driving the nut inspection motor 174 in the reverse direction of the fastening direction of the nut in order for the welding burr inspection unit 18 to rise from the nut coupling unit 82; A thirteenth step (S130) for determining when the shanghai sending unit 16 returns to its original position; When the shanghai sending unit (16) is raised to return to the original position, the frame fixing part (93) is an operation method of the frame component welding burr detection apparatus comprising a fourteenth step (S140).

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