KR20100114575A - Apparatus and method for drilling diesel particulate filter - Google Patents

Abstract

PURPOSE: A DPF drilling device and a drilling method using the same, which rapidly drills a hole on top and bottom side of DPF with a fixed depth, is provided to accurately punch a hole at a drilling point by processing an image. CONSTITUTION: A DPF drilling device comprises a DPF clamping unit(80), a DPF vertically driving unit(90), a DPF height measurement unit(60), a drill unit(40), a drill height measurement unit(70), a camera unit(50), a controller and a dust collection unit. The DPF vertically driving unit moves the DPF clamping unit up and down. The drill height measurement unit measures the height of the drill unit. The camera unit takes images of top and bottom side of a test plate.

Description

DPF drilling apparatus and DPF drilling method using the same {APPARATUS AND METHOD FOR DRILLING DIESEL PARTICULATE FILTER}

The present invention relates to a DPF drilling apparatus for drilling a hole in the DPF.

DPF is a filter that burns and removes soot emitted from diesel vehicles by exhaust heat.

1 is a perspective view showing a DPF. FIG. 2 is a cross-sectional view II-II of FIG. 1.

As shown in FIG. 1 and FIG. 2, a plurality of passages 2 are provided inside the DPF 1.

The plurality of passages 2 are composed of first passages 2a and second passages 2b.

The first passage 2a is open at the upper surface of the DPF 1 and is blocked at the lower surface thereof.

The upper side of the second passage 2b is blocked and the lower side thereof is bored.

The first passage 2a and the second passage 2b are alternately disposed adjacent to each other inside the DPF 1.

A hole 3 is drilled in a diameter D and a depth T on the blocked side of the first passage 2a to connect with the inside. A hole 3 is drilled in a diameter D and a depth T on the blocked side of the second passage 2b to connect with the inside.

Soot is burned and removed by the exhaust heat while passing through the holes 3 and the passages 2.

On the other hand, conventionally, the holes 3 were drilled by hand on the upper and lower surfaces of the DPF.

Therefore, it was difficult to shorten the time for drilling the hole 3. In addition, it was difficult to drill the hole 3 precisely at the point where the hole 3 was to be drilled. In addition, it was difficult to drill the hole 3 to a set depth.

It is an object of the present invention to drill holes quickly, accurately and at a set depth at the top and bottom of the DPF, at the point where the holes are to be drilled.

In order to achieve the above object, the DPF drilling apparatus according to the present invention, the DPF fixed unit is loaded and fixed DPF; A DPF up and down drive unit for raising or lowering the DPF fixing unit; A DPF height measuring unit measuring a height of the DPF; A drill unit for drilling a hole in the DPF; A drill height measuring unit measuring a height of a drill provided in the drill unit; A camera unit for photographing the test plate punched by the drill, or photographing the upper or lower surface of the DPF; Receiving an image of the test plate punched from the camera unit to find the XY axis distance between the drill and the spindle motor axis for rotating the drill, or the upper or lower surface of the DPF from the camera unit A control unit which receives a captured image and finds a point to drill a hole in the upper or lower surface of the DPF; A third driving unit for moving the drill unit in the Z-axis direction; A second driving unit which moves the third driving unit in the X-axis direction; A first driving unit for moving the second driving unit in the Y-axis direction; And a dust collecting unit for sucking dust of the DPF generated when the drill unit drills a hole.

In addition, the object, the first step of loading the DPF in the DPF pedestal; Fixing the DPF to the DPF pedestal; A third step of measuring a height of the DPF; A fourth step of measuring a height of a drill to drill a hole on the upper or lower surface of the DPF; A fifth step of obtaining an XY axis distance between the drill and the spindle motor shaft for rotating the drill; A sixth step of finding a point to drill a hole in the upper or lower surface of the DPF; And a seventh step of drilling a hole at the point where the hole is to be drilled.

According to the present invention, the upper and lower surfaces of the DPF can drill holes quickly, accurately, and at a set depth at the point where the holes are to be drilled.

Hereinafter, with reference to the accompanying drawings, a DPF drilling apparatus according to an embodiment of the present invention will be described in detail.

3 is a perspective view showing a DPF drilling apparatus according to an embodiment of the present invention. 4 is a view illustrating a state in which a DPF sensor contact end, a drill sensor contact end, and a test plate upper surface are positioned on a reference line, and an origin of XYZ coordinates is positioned at the center of the test plate. 5 is a view illustrating a first driving unit, a second driving unit, a third driving unit, a drill unit, and a drill sensor of FIG. 3. The solid arrow M1 shown in FIG. 5 indicates a moving direction of the first connecting plate. The solid arrow M2 indicates the direction of movement of the third connecting plate.

6 is a view showing a DPF up and down drive unit, a DPF fixing unit, and a DPF height measuring unit of FIG. 3. The solid arrow M3 shown in Fig. 6 represents the sensor holder moving direction. The solid arrow M4 indicates the direction of movement of the second stand.

As shown in FIG. 3, the DPF drilling apparatus according to the present invention includes a frame 5, a cover 6, first driving units 10, a second driving unit 20, and a third driving unit 30. ), Drill unit 40, camera unit 50, DPF height measuring unit 60, drill height measuring unit 70, test plate 75, DPF fixing unit 80, DPF vertical drive unit 90 , The dust collecting unit 100.

The frame 5 is manufactured by welding steel. Of course, you can also make aluminum profiles (ALUMINUM PROFILE).

The frame 5 is composed of a base frame 5a and a support frame 5b.

An electric device (not shown), a PC (not shown), a pneumatic unit (not shown), etc., are installed in the base frame 5a. Two support frames 5b are installed on an upper surface of the base frame 5a. The support frames 5b are spaced apart by a set interval in the X-axis direction.

The cover 6 is composed of an aluminum profile (not shown) and an acrylic plate (not shown) covering the same.

The acrylic plate is provided with a door (not shown). The operator opens the door and manually loads or unloads the DPF 1 into / from the DPF pedestal 81. Of course, a robot may be used to automatically load or unload the DPF 1 to and from the DPF pedestal 81.

The cover 6 is provided with a monitor (not shown), an operation switch (not shown), a keyboard support (not shown), a mouse support (not shown), and the like.

The first driving unit 10 is installed on the upper surface of the support frame (5b).

The first driving unit 10 is a servo motor (not shown), a ball screw (not shown) coupled to the axis of the servo motor, coupled to the ball screw to linear movement in the Y-axis direction when the ball screw rotates It consists of a first connection plate (11). Of course, the first driving unit 10 may be configured as a first connecting plate 11 coupled to the linear motor and the mover of the linear motor and linearly moving in the Y-axis direction.

The second driving unit 20 crosses the upper side of the base frame 5a in the X-axis direction.

One end of the second driving unit 20 is coupled to the first connection plate 11 of one of the first driving units 10, and the other end of the second driving unit 20 is connected to the first connection plate of the first driving unit 10. 11). Thus, when the first driving units 10 move the respective first connection plates 11 in the Y-axis direction, the second driving unit 20 is moved in the Y-axis direction.

The second driving unit 20 is a servo motor (not shown), a ball screw (not shown) coupled to the axis of the servo motor, coupled to the ball screw to linear movement in the X-axis direction when the ball screw rotates It is composed of a second connecting plate (21). Of course, the second driving unit 20 may be configured as a second connecting plate 21 coupled to the linear motor and the mover of the linear motor and linearly moving in the X-axis direction.

The second connection plate 21 includes a vertical member 21a, a horizontal member 21b, and a rib 21c connecting the vertical member 21a and the horizontal member 21b.

The third driving unit 30 is installed in the vertical member 21a. Thus, when the second driving unit 20 moves the second connection plate 21 in the X axis direction, the third driving unit 20 is moved in the X axis direction.

The third driving unit 30 is a servo motor (not shown), a ball screw (not shown) coupled to the axis of the servo motor, coupled to the ball screw to linear movement in the Z axis direction when the ball screw rotates It is composed of a third connecting plate (31). Of course, the third driving unit 30 may be configured as a third connecting plate 31 coupled to the linear motor and the mover of the linear motor and linearly moving in the Z-axis direction.

The drill unit 40 is installed on the third connection plate 31. Thus, when the third driving unit 30 moves the third connection plate 31 in the Z-axis direction, the drill unit 40 is moved in the Z-axis direction.

As shown in FIG. 3 and FIG. 5, the drill unit 40 includes a spindle motor 41, a drill chuck 42, and a drill 43. The drill chuck 42 is detachably coupled to the shaft 41a of the spindle motor 41. The drill 43 is detachably coupled to the drill chuck 42.

As shown in FIG. 3, the camera unit 50 includes a camera holder 51 and a camera 52.

The camera holder 51 is installed in the vertical member 21a. The head 52a of the camera 52 is inserted into the hole 51a of the camera holder 51.

The camera holder 51 may be further provided with a lamp. The lamp illuminates the upper or lower surface of the DPF 1 brightly when the camera 52 photographs the upper or lower surface of the DPF 1.

The camera 52 transmits an image of the photographed area to a controller (not shown). The controller performs image processing on the image, and finds a point to drill a hole in the upper or lower surface of the DPF 1. The finding method is mentioned later.

3 and 6, the DPF height measuring unit 60 is composed of a cylinder 61, a sensor holder 62 and a DPF sensor 63. The cylinder 61 is installed in the vertical member 21a. The sensor holder 62 is installed in the cylinder 61 rod. The DPF sensor 63 is inserted into the hole 61a of the sensor holder 61. The DPF sensor 63 is preferably a touch sensor.

The cylinder 61 lowers the rod and positions the contact end 63a of the DPF sensor 63 on the reference line R. The descending distance is S. Here, the reference line R is a line passing through the center of the upper surface of the test plate 75 in the X-axis direction. The origin O of the XYZ coordinate is located at the center of the upper surface of the test plate 75. The method of measuring the height of the DPF 1 by the DPF height measuring unit 60 will be described later.

As shown in Figure 3 and 4, the drill height measuring unit 70 is composed of a sensor support 71, a sensor support 72, a drill sensor 73.

The sensor support 71 is installed on the upper surface of the base frame 5a. Sensor stand 72 is installed on the upper surface of the sensor support (71). Drill sensor 73 is installed on the upper surface of the sensor support (72). The contact end 73a of the drill sensor 73 is located on the reference line R. As shown in FIG. Drill sensor 73 is preferably a touch sensor. The method of measuring the height of the drill 43 by the drill height measuring unit 70 will be described later.

The test plate 75 is installed on the upper surface of the sensor pedestal 72. Using the camera unit 50 and the test plate 75, the XY axis distance between the drill 43 and the spindle motor 41 axis for rotating the drill 43 is found. The finding method is mentioned later.

As shown in Figure 3 and 6, the DPF fixing unit 80 is composed of a DPF pedestal 81, the cylinder 82.

The first groove 81a, the second groove 81b, and the third groove 81c are dug in the DPF pedestal 81 so that the DPF can be loaded by size.

A first groove 81a having a diameter D1 is dug in the center of the DPF pedestal 81. The first groove 81a is loaded with a large DPF having a diameter D1.

A second groove 81b having a diameter D2 is dug in the center of the first groove 81a. Here, diameter D2 is smaller than diameter D1. The second groove 81b is loaded with a medium DPF having a diameter D2.

A third groove 81c having a diameter D3 is dug in the center of the second groove 81b. Here, diameter D3 is smaller than diameter D2. The third groove 81c is loaded with a small DPF having a diameter D3.

The DPF pedestal 81 is composed of a first pedestal 110 and a second pedestal 120.

The first pedestal 110 has a coupling shaft 111 protruding from the center of the lower surface. A hole is dug in the center of the coupling shaft 111. A female screw 111a is formed on the inner circumferential surface of the hole. The male screw 95a of the ball screw 95 to be described later is coupled to the female screw 111a. Two insertion grooves 112 are dug in the lower surface of the first base 110. The coupling shaft 111 is positioned between the insertion grooves 112. The guide rod 93 to be described later is inserted into the insertion groove 112.

The cylinder 82 is installed on an upper surface of the first pedestal 110. The rod 82a of the cylinder 82 is coupled to the second pedestal 120. When the cylinder 82 pushes the rod 82a, the second pedestal 120 contacts the first pedestal 110. When the cylinder 82 pulls the rod 82a, the second base 120 is separated from the first base 110. On the other hand, the DPF pedestal 81, a sensor for detecting this when the DPF (1) is loaded may be further installed. The sensor is preferably an optical sensor. The method of fixing the DPF by the DPF fixing unit 80 will be described later.

The DPF vertical drive unit 90 includes a motor base 91, a servo motor 92, guide rods 93, bushes 94, a ball screw 95, and a coupling 96.

The motor base 91 is installed in the base frame 5a.

The servo motor 92 is installed in the motor base 91.

The first base 91a into which the head 92a of the servo motor 92 is inserted is drilled in the motor base 91. The first hole 91a is located at the center of the motor base 91.

Two second holes 91b through which the guide rod 93 penetrates are formed in the motor base 91. The first hole 91a is located between the second holes 91b.

The guide rod 93 is inserted into the insertion groove 112 of the first base 110 through the second hole 91b. The bush 94 is provided in the second hole 91b.

The bush 94 is located between the guide rod 93 and the second hole 91b.

The male screw 95a is formed at one end of the ball screw 95. The male screw 95a is engaged with the female screw 111a of the coupling shaft 111.

The coupling 96 connects the other end of the ball screw 95 to the servo motor 92 axis.

When the servo motor 92 rotates the ball screw 95 clockwise, the DPF pedestal 81 is raised. On the contrary, when the servo motor 92 rotates the ball screw 95 counterclockwise, the DPF pedestal 81 descends.

The dust collecting unit 100 is composed of a pneumatic generator (not shown), the duct 101, the nozzle 102. The buffer generator generates the buffer. The vibration generator and the nozzle 102 are connected to the duct 101. When the vibration generator generates the vibration, negative pressure is generated in the duct 101 and the nozzle 102. The dust collecting unit 100 sucks in the dust of the DPF generated when the drill 43 drills a hole in the DPF 1 through the nozzle 102 and the duct 101 by operating the pneumatic generator.

Hereinafter, a method of drilling in the DPF using the DPF drilling apparatus having the above-described structure will be described.

7 is a flowchart illustrating a DPF drilling method using the DPF drilling apparatus of FIG. 3. Referring to FIG. 7, a method of drilling a DPF using a DPF drilling apparatus includes: a first step S10 of loading the DPF 1 into the DPF pedestal 81; A second step S20 of fixing the DPF 1 to the DPF pedestal 81; A third step S30 of measuring the height of the DPF 1; A fourth step (S40) of measuring a height of the drill 43 for drilling holes in the upper or lower surface of the DPF 1; A fifth step (S50) of obtaining an XY axis distance between the drill 43 and the spindle motor 41 shaft 41a for rotating the drill 43; A sixth step (S60) of finding a point to drill a hole in the upper or lower surface of the DPF (1); And a seventh step S70 of drilling a hole at a point to be drilled.

Hereinafter, the first step S10 will be described.

Referring to FIG. 6, the cylinder 82 pulls the rod 82a to separate the first pedestal 110 and the second pedestal 120. Since the DPF 1 is medium, the DPF 1 is loaded in the second groove 81b. If the DPF 1 is large, it is loaded into the first groove 81a. If the DPF 1 is small, it is loaded into the third groove 81c. On the other hand, since the first hole to be drilled in the upper surface of the DPF (1), the upper surface of the DPF (1) is loaded upward. Of course, if you want to drill a hole in the bottom surface of the DPF (1) first, the bottom surface of the DPF (1) is loaded upward.

Hereinafter, the second step S20 will be described.

Referring to FIG. 6, when the cylinder 82 pushes the rod 82a, the second pedestal 120 pushes the DPF 1. For this reason, the DPF 1 is fixed to the second groove 81b. If the DPF 1 is large, the DPF 1 is fixed to the first groove 81a. If the DPF 1 is small, it is fixed to the third groove 81c.

Hereinafter, the third step S30 will be described.

The height of the DPF 1 is measured in the following order. 6,

First, the cylinder 61 lowers the contact end 63a of the DPF sensor 63 to the reference line R. The descending distance is S.

Second, the Z-axis distance is obtained from the reference line R to the second groove 81b. The Z-axis distance is obtained from the motor speed counted by the encoder provided in the servomotor 92. Z-axis distance is H1.

Third, the DPF pedestal 81 is raised at a low speed. The upper surface of the DPF 1 contacts the contact end 63a of the DPF sensor 63. When the upper surface of the DPF 1 touches the contact end 63a of the DPF sensor 63, the DPF sensor 63 sends a signal to the controller. The control unit calculates the distance at which the DPF pedestal 81 rises. The increased distance is obtained from the motor speed counted by the encoder included in the servomotor 92. The elevated distance is H2.

Fourth, the control unit subtracts H2 from H1 to measure the height of the DPF 1. The height of the measured DPF 1 is (H1-H2).

Knowing the height of the DPF 1, the Z coordinate of the upper surface of the DPF 1 can also be known. For example, when the Z coordinate of the second groove 81b is Z1, the Z coordinate of the upper surface of the DPF 1 becomes Z1 + (H1-H2). Knowing the Z coordinate of the upper surface of the DPF 1, the DPF pedestal 81 can be raised or lowered to position the upper surface of the DPF 1 at the desired Z coordinate.

Hereinafter, the fourth step S40 will be described.

The height of the drill 43 is measured in the following order. 5,

First, the third drive unit 30 raises the end 41b of the shaft 41a of the spindle motor 41 from the reference line R by L1.

Secondly, the first driving unit 10 and the second driving unit 20 position the shaft 41a of the spindle motor 41 above the drill sensor 73. Then, the drill 43 is also located above the drill sensor 73.

Third, the third drive unit 30 lowers the shaft 41a of the spindle motor 41 at low speed. Then, the drill 43 also lowers at a low speed. The end 43a of the drill 43 touches the contact end 73a of the drill sensor 73. The contact end 73a of the drill sensor 73 is located on the reference line R. As shown in FIG. The Z coordinate of the contact end 73a of the drill sensor 73 is zero. When the end 43a of the drill 43 contacts the drill sensor 73 contact end 73a, the drill sensor 73 sends a signal to the controller.

Fourth, the distance from which the end portion 41b of the shaft 41a of the spindle motor 41 descends is obtained. The lowered distance is obtained from the motor speed counted by the encoder provided in the servomotor (not shown) of the third drive unit 30. The descending distance is L2.

Fifth, the controller measures the height of the drill 43 by subtracting L2 from L1. The measured drill 43 height becomes (L1-L2).

If the height of the drill 43 is known, the Z coordinate of the tip 43a of the drill 43 can also be known. For example, when the Z coordinate of the end 41b of the shaft 41a of the spindle motor 41 is Z1, the Z coordinate of the end 43a of the drill 43 is Z1- (L1-L2). Knowing the Z coordinate of the end 43a of the drill 43, the third drive unit 30 may raise or lower the spindle motor 41 to position the drill 43 at the desired Z coordinate.

Hereinafter, a fifth step S50 will be described.

8 (a) (b) (c) are diagrams showing the procedure for obtaining the X-axis distance and the Y-axis distance between the drill and spindle motor axes of FIG.

3 and 8 (a) (b) (c), when the drill 43 is fixed to the drill chuck 42, the shaft 41a of the spindle motor 41 and the drill 43 are theoretically straight line. Is put on. In this case, the X-axis distance and the Y-axis distance between the drill 43 and the shaft 41a of the spindle motor 41 become 0 respectively.

However, when the drill 43 is fixed by the drill chuck 42, no force is uniformly applied to the drill 43. Therefore, the drill 43 is pushed in either direction and fixed to the drill chuck 43. As a result, the spindle motor 41 shaft 41a and the drill 43 are not actually placed in a straight line. In this case, the X-axis distance and the Y-axis distance between the drill 43 and the shaft 41a of the spindle motor 41 do not become zero, respectively. Therefore, after fixing the drill 43 to the drill chuck 42, the X-axis distance and the Y-axis distance between the drill 43 and the shaft 41a of the spindle motor 41 should be obtained. This is because the XY coordinate of the drill 43 can be known.

The X axis distance and the Y axis distance between the drill 43 and the shaft 41a of the spindle motor 41 are obtained in the following order.

First, as shown in FIG. 8A, the third drive unit 30 raises the end 41b of the shaft 41a of the spindle motor 41 by I from the reference line R. As shown in FIG. The first drive unit 10 and the second drive unit 20 position the shaft 41a of the spindle motor 41 above the origin O positioned at the center of the test plate 75.

Second, as shown in FIG. 8 (b), the spindle motor 41 rotates the drill 43. The third driving unit 30 drills a hole in the test plate 75 by lowering the drill 43 by (I + T1). Where T1 is the depth of the hole.

Third, as shown in FIG. 8C, the first driving unit 10 and the second driving unit 20 position the center of the lens of the camera 52 above the origin O. The upper surface of the test plate 75 is photographed by the camera 52. The camera 52 transmits an image of the photographed area to the controller. The controller performs image processing on the image to find the position of the drilled hole 74a. The XY coordinate of the center of the drilled hole 74a is the same as the XY coordinate of the drill 43.

The center of the drilled hole 74a is δx away from the origin O in the X-axis direction. Therefore, it can be seen that the X-axis distance between the drill 43 and the shaft 41a of the spindle motor 41 is δx.

The center of the drilled hole 74a is separated by δy in the Y axis direction from the origin O. Therefore, it can be seen that the Y-axis distance between the drill 43 and the shaft 41a of the spindle motor 41 is δy.

Knowing the X axis distance between the drill 43 and the shaft 41a of the spindle motor 41 and the Y axis distance between the drill 43 and the shaft 41a of the spindle motor 41, the drill 43 XY coordinates is known. It can also be seen.

For example, when the axis 41a XY coordinates of the spindle motor 41 are (X1, Y1), the drill 43 XY coordinates are (X1 + δx, Y1 + δy). Knowing the XY coordinates of the drill 43, the first drive unit 10 and the second drive unit 20 move the spindle motor 41 in the X-axis direction or the Y-axis direction, so that the drill XY coordinates are desired. Can be located at

Hereinafter, a sixth step S60 will be described.

FIG. 9 is a view for explaining a step of finding a point to be drilled in the DPF of FIG. 7 and a step of punching a hole in a point to be drilled. The dotted line represents the image of the area photographed by the camera 52.

Referring to FIG. 9, the camera 52 photographs the upper surface of the DPF 1 at four times. This is because the upper surface of the DPF 1 is wide, and the camera 52 cannot photograph the upper surface of the DPF 1 at one time. The dotted line represents the area photographed by the camera 52.

The first driving unit 10 and the second driving unit 20 move the center of the lens of the camera 52 above the C1 point. The camera 52 photographs the upper surface of the DPF 1. The camera 52 transmits an image of the photographed area A1 to the controller.

The controller performs an image processing on the image of the photographed area A1 and finds a point to drill a hole in the upper surface of the DPF 1. First, the controller performs image processing on the image of the photographed area A1 to find the positions of the first passages 2a. When the position of the first passage 2a is found, since the first passage 2a and the second passage 2b are alternately arranged adjacently inside the DPF 1, the position of the second passage 2b can also be found. The center of the upper surface of the DPF 1 is the point where the hole is to be drilled. The points where the holes are found are P1, P2, P3 and P4.

Hereinafter, the seventh step S70 will be described.

6 and 9, the DPF vertical drive unit 90 raises the upper surface of the DPF 1 to the reference line R. Referring to FIGS. 3 and 5, the third driving unit 30 raises the end 43a of the drill 43 by a distance I from the reference line R.

3 and 9, the first driving unit 10 and the second driving unit 20 position the end of the drill 43 43a above the P1. The spindle motor 41 rotates the drill 43 at high speed. The third driving unit 30 lowers the drill 43 by (I + T) to drill a hole having a depth T in P1. In this way, holes are also drilled at points P2, P3 and P4. The dust collecting unit 100 sucks dust of the DPF through the nozzle 102 and the duct 101 by operating a vibration generator to remove dust of the DPF generated when a hole is drilled.

After drilling holes at the points P1, P2, P3, and P4, the first driving unit 10 and the second driving unit 20 move the camera 52 so that the center of the lens of the camera 52 is located above the C2 point. Place it in The camera 52 photographs the upper surface of the DPF 1. The camera 52 transmits an image of the photographed area A2 to the controller. The points where the holes are found are P5, P6 and P7. P5, P6, P7 points to find a hole and the method is the same as the method to find a point P1, so the description is omitted.

After drilling holes at the points P5, P6, and P7, the first driving unit 10 and the second driving unit 20 move the camera 52 to position the center of the lens of the camera 52 above the point C3. Let's do it. The camera 52 photographs the upper surface of the DPF 1. The camera 52 transmits an image of the photographed area A3 to the control unit. The points where the found holes will be drilled are P8, P9 and P10. The method of drilling holes by finding P8, P9, and P10 points is the same as the method of drilling holes by finding P1 points, and thus description thereof is omitted.

After the holes are drilled at the points P8, P9, and P10, the first driving unit 10 and the second driving unit 20 move the camera 52 so that the center of the lens of the camera 52 is located above the point C4. Let's do it. The camera 52 photographs the upper surface of the DPF 1. The camera 52 transmits an image of the photographed area A4 to the controller. The points where the found holes will be drilled are P11 and P2. The method of punching out the holes P11 and P12 is the same as the method of drilling out the holes P1, and thus the description thereof is omitted.

When all the holes are drilled at the points P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, and P12, the operator unloads the DPF 1 from the DPF support 81.

Next, to find the points to be drilled in the bottom surface of the DPF (1), in order to drill the hole, the DPF (1) is turned over, and the DPF (1) is loaded. Finding the points to be drilled in the bottom surface of the DPF (1), the method of drilling a hole is the same as the method of finding a hole to find a hole on the upper surface of the DPF (1), and the description thereof will be omitted.

1 is a perspective view showing a DPF.

FIG. 2 is a cross-sectional view II-II of FIG. 1.

3 is a perspective view showing a DPF drilling apparatus according to an embodiment of the present invention.

4 is a view illustrating a state in which a DPF sensor contact end, a drill sensor contact end, and a test plate upper surface are positioned on a reference line, and an origin of XYZ coordinates is positioned at the center of the test plate.

5 is a view illustrating a first driving unit, a second driving unit, a third driving unit, a drill unit, and a drill sensor of FIG. 3.

6 is a view showing a DPF up and down drive unit, a DPF fixing unit, and a DPF height measuring unit of FIG. 3.

7 is a flowchart illustrating a DPF drilling method using the DPF drilling apparatus of FIG. 3.

8 (a) (b) (c) are diagrams showing the procedure for obtaining the X-axis distance and the Y-axis distance between the drill and spindle motor axes of FIG.

FIG. 9 is a view for explaining a step of finding a point to be drilled in the DPF of FIG. 7 and a step of punching a hole in a point to be drilled.

Claims (9)

A DPF fixing unit to which the DPF is loaded and fixed; A DPF up and down drive unit for raising or lowering the DPF fixing unit; A DPF height measuring unit measuring a height of the DPF; A drill unit for drilling a hole in the DPF; A drill height measuring unit measuring a height of a drill provided in the drill unit; A camera unit for photographing the test plate punched by the drill, or photographing the upper or lower surface of the DPF; Receiving an image of the test plate punched from the camera unit to find the XY axis distance between the drill and the spindle motor axis for rotating the drill, or the upper or lower surface of the DPF from the camera unit A control unit which receives a captured image and finds a point to drill a hole in the upper or lower surface of the DPF; A third driving unit for moving the drill unit in the Z-axis direction; A second driving unit which moves the third driving unit in the X-axis direction; A first driving unit for moving the second driving unit in the Y-axis direction; And And a dust collecting unit for sucking dust of the DPF generated when the drill unit drills a hole. The method of claim 1, wherein the DPF fixing unit, A DPF pedestal comprising a first pedestal and a second pedestal; And DPF drilling apparatus comprising a; is installed on the first support, the cylinder for moving the second support. The DPF drilling apparatus according to claim 2, wherein the DPF support is provided with a plurality of grooves to allow the DPF to be loaded in sizes. According to claim 1, wherein the DPF height measuring unit, cylinder; A sensor holder installed on the cylinder rod; And DPF drilling device consisting of; DPF sensor installed in the sensor holder. According to claim 1, wherein the drill height measuring unit, Sensor support; A sensor base installed on the sensor support; DPF drilling device consisting of a drill sensor installed in the sensor support. Loading the DPF onto the DPF pedestal; Fixing the DPF to the DPF pedestal; A third step of measuring a height of the DPF; A fourth step of measuring a height of a drill to drill a hole in the upper or lower surface of the DPF; A fifth step of obtaining an XY axis distance between the drill and the spindle motor shaft for rotating the drill; A sixth step of finding a point to drill a hole in the upper or lower surface of the DPF; And And drilling a hole at the point where the hole is to be drilled. 7. The method of claim 6, wherein the third step, Lowering the DPF sensor to a baseline; Raising the DPF until the DPF contacts the DPF sensor; And And when the DPF touches the DPF sensor, the DPF sensor sends a signal to a control unit. The method of claim 6, wherein the fourth step, Positioning the drill above the drill sensor; Lowering the drill until the drill contacts the drill sensor; When the drill touches the drill sensor, the drill sensor sends a signal to the control unit; Method for drilling in the DPF using a DPF drilling device comprising a. The method of claim 6, wherein the fifth step, Positioning a spindle motor shaft for rotating the drill above an origin located on a test plate; Lowering the spindle motor and rotating the drill to drill holes in the test plate with the drill; Photographing the test plate with the holes; And And transmitting an image of the photographed area to a control unit.

Images