JPH0445802Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a camera support device in a plate processing machine.

[Technical background of the invention and problems with conventional equipment] Conventionally, the work table of plate processing machines such as shearing machines and punching presses has been used to grip one end of the plate and move it horizontally (X-axis direction) and vertically. Numerically controlled plate material movement and positioning devices that move and position the material in the Y-axis direction are widely used.

The numerically controlled plate movement and positioning device described above is
Once a program is created according to the work procedure, the movement and positioning of the plate materials can be performed automatically without an operator, which is especially effective for mass production work.

However, the edges of most of the workpieces to be processed are still sheared in the previous process, and the degree of burr generation differs for each workpiece. Since the plate material is gripped by the moving positioning device by hitting against the gauge of the shaft, it is not guaranteed that the plate material will be gripped accurately at the operating origin position of the numerical control.

Therefore, there have been problems such as defective products sometimes being mixed in the products manufactured by the plate processing machine using the efficient numerically controlled moving and positioning device for plate materials as described above.

[Effects of the invention] In view of the above-mentioned problems, the present invention has been developed to take an image of a reference hole for the origin provided in advance in the plate material using a camera, and to position the plate material using the center position of this reference hole as the origin. It is an object of the present invention to provide a camera support device for accurately imaging the position of a reference hole.

[Summary of the invention] In order to achieve the above object, the present invention has the above-mentioned plate material mounted on a work table that supports the plate material.
A moving positioning device for moving and positioning in the axial direction is provided, and an X for positioning the origin of the plate material in the X-axis direction is provided.
A camera support device for a plate processing machine in which an axis gauge is provided so as to be freely protrusive and retractable from the upper surface of the work table, and a second bracket is provided on the bracket supporting the X-axis gauge so that the position thereof can be adjusted in the X-axis direction; A sliding bracket supported perpendicularly to the second bracket is provided so as to be finely adjustable in the X-axis and Y-axis directions, and the plate member is attached to a mounting plate rotatably supported via a horizontal hinge pin on the sliding bracket. A camera is attached to take an image of the check hole formed in the hole.

[Embodiment of the invention] First, a numerically controlled plate material moving and positioning device will be described based on FIG.

This numerically controlled plate material movement and positioning device is generally handled on the assumption that the two adjacent sides of the plate material, which serve as references, are perpendicular to each other and that no burrs occur.

FIG. 1 shows a perspective view of a blanking shear 1 as an example of a plate processing machine, and the blanking shear 1 has movable upper blades 3 and 5 connected to each other in a state bent at a right angle from the middle. A fixed lower blade (not shown) is also correspondingly provided at the rear edge of the work table 7.

As is clear from FIG. 2, on the front side of the work table 7, there is a carriage base 9, and an X-axis lead screw 13 is screwed onto the carriage base 9 and driven by an electric motor 11 such as a pulse motor, and is positioned for movement in the X-axis direction. A carriage 15 is provided. Further, on the blanking shear 1 side of the carriage 15, there are three sets of gripping claw devices 17 and a plate material 19.
(See FIG. 3) are provided with two sets of retracting devices 23 that grip the front edge of the gripping device 17 and pull it in to the abutment 21 at the bottom of the gripping claw device 17, the distance between them being freely adjustable.

A large number of free ball bearings 25 are installed on the upper surface of the work table 7 described above.

Two grooves are provided in the Y-axis direction in the work table 7, and a Y-axis lead screw 27 driven by an electric motor such as a pulse motor (not shown) is provided in these grooves. The carriage base 9 is moved and positioned in the Y-axis direction by being screwed together.

The plate material 19 thus gripped by the gripping claw device 17
is moved and positioned in the X-axis and Y-axis directions by numerical control, and shearing is performed between the movable upper blade 3 and the fixed lower blade.

The carriage base 9 in FIG.
right side in the figure) (origin position in the Y-axis direction), and at this time, the line on the pass.

Further, the rectangular part shown below the work table 7 in FIG. 2 is the X-axis gauge 31.

For example, a fixed-length plate 19 is carried in from the direction of arrow A shown in the upper part of FIG. 2 using a plate carrying device (not shown) such as a suction pad, and is brought into contact with the X-axis gauge 31 to determine the origin in the X-axis direction. Place it on work table 7. Next, the front edge of the plate 19 is pulled in by the above-mentioned retracting device 23, brought into contact with the abutment 21 of the gripping claw device 17, and gripped by the gripping claw device 17, thereby positioning the origin of the plate 19 in the Y-axis direction. Complete grip in position.

That is, in the numerically controlled plate material moving and positioning device having the general configuration described above, the two adjacent sides of the plate material 19 form a perfect right angle, and the abutment 21 and the X axis are assumed to be free of burrs on both sides. It will be understood that the plate material 19 was pressed against the gauge 31 and the movement position of the plate material 19 was determined by numerical control assuming that the intersection of the two sides correctly occupied the origin 29.

Therefore, in order to cope with the case where the plate material 19 is not accurately positioned at the origin 29, a check hole 33 as a reference hole is provided in the plate material 19, and the check hole 33 is provided as a reference hole when the plate material 19 is positioned at the origin position.
There is a positioning method in which the center position of the plate 19 is detected and the plate 19 is positioned using the detected center position as a reference position.

That is, as shown in FIG. 2, a check hole 33 is formed inside the plate 19 at a certain distance x (for example, 40 mm) and y (for example, 300 mm) from the origin 29 by drilling it into an accurate round hole by reaming or the like. Ta.

Further, as shown in Fig. 1, the work table 7
An illumination device 35 was provided above, overhanging the table frame, and illuminating the check hole 33 vertically and downward at the theoretical coordinate position (40, 300) with the origin 29 as a reference.

Further, a CCD camera (image sensor) 3 is located below the work table 7 and is focused on the check hole 33 directly below the theoretical coordinate position of the check hole 33.
7 so that its vertical upward posture can be freely adjusted.

The cabinet shown in the lower part of FIG. 1 is the control console 41 of the numerically controlled plate material moving and positioning device comprising the above-mentioned carriage base 9, carriage 15, gripping claw device 17, etc. Further, a processing device 43 for correcting the origin position and a monitor display 45 are provided thereon, and a power source 47 for the lighting device 35 is provided between the lighting device 35 and the control console 41.

Next, we will move on to the explanation of FIG. 3, which is a cross-sectional view taken along the - arrow direction in FIG. 2.

As shown in FIG. 3, the X-axis gauge 31 is
It is driven by a fluid pressure cylinder 53 from the frame beam 49 of the work table 7 via a bracket 51, so that it can protrude from and retract from the upper surface of the work table 7. A CCD camera 55 that images the check hole 33 of the plate material 19 is connected to the bracket 5.
The second bracket 5 is located behind 1 (to the left in Figure 3).
7. Thereon, an L-shaped sliding bracket 59 is attached to the L-shaped sliding bracket 59 via a camera mounting plate 63 that is rotatable around a hinge pin 61.

Between the mounting plate 63 and the CCD camera 55 is an L fitting 65 provided on the mounting plate 63, and an L fitting 65 provided on the mounting plate 63.
The upper part of the CCD camera 55 is held by a split ring 67 provided on the metal fitting 65.

Since the CCD camera 55 is installed as described above, place shims on the four bolts 59 connecting the bracket 51 and the second bracket 57, and place a level on the top of the second bracket 57 to level the bracket 57. Adjust to

Next, as most clearly seen in FIG. 5, the camera mounting plate 63 above the horizontal hinge pin 61 is swung around the hinge pin 61 by adjusting the left and right push bolts 71.
The optical axis 73 of the CCD camera 55 is adjusted vertically.

Next, as most clearly seen in FIG. 4, the sliding bracket 59 is finely adjusted in the X and Y directions by adjusting the push bolts 75, 75 and pull bolts 77, 77 provided in the X and Y directions. do.

In this way, the optical axis 73 of the CCD camera 55 can be aligned perpendicularly to the theoretical reference position on the work table 7.

As is clear from the detailed description above,
When installing the CCD camera 55, the optical axis 7 of the CCD camera is
3 can be oriented in a vertical position at the center of a theoretical check hole 33 provided in the plate.

Therefore, the CCD camera 55 can transmit the figure of the check hole 33 of the plate material 19 pressed and gripped against the abutment 31 and the abutment 21 of the gripping claw device 17 to the processing device 43 as data.

In this way, each time a new plate is gripped, corrections to the operating origin position for true numerically controlled plate movement and positioning are transmitted from the processing device to both the X and Y axes, allowing accurate plate work even if there are burrs on the periphery of the plate. After the processing was carried out, there were no defective products, and the initial objective was achieved.

[Effects of the invention] As can be understood from the description of the embodiments above, the present invention basically provides a movement for moving and positioning the plate 19 in the X-axis and Y-axis directions on the work table 7 that supports the plate 19. Provide a positioning device,
The X-axis gauge 31 for positioning the origin of the plate material 19 in the X-axis direction is provided as a camera support device in a plate processing machine, in which the X-axis gauge 31 is provided so as to be freely retractable from the upper surface of the work table 7, and the X-axis gauge 31 is supported. A second bracket 57 is provided on the bracket 51 so that its position can be adjusted in the X-axis direction.
A sliding bracket 59 supported perpendicularly to
A camera 55 for taking an image of the check hole 33 formed in the plate material 19 is mounted on a mounting plate 63 which is provided to be finely adjustable in the axial and Y-axis directions and rotatably supported by the sliding bracket 59 via a horizontal hinge pin 61. It is made by installing.

Therefore, according to the present invention, the optical axis of the camera 55 can be adjusted vertically, and the optical axis of the camera 55 can be set at an accurate position from the position of the origin 29 of the machine. Therefore, when the check hole 33 provided in the plate material 19 is imaged by the camera 55 and the center of the check hole 33 is detected, the amount of deviation of the center position of the check hole 33 with respect to the optical axis of the camera 55 can be accurately detected. The displacement of the plate material 19 with respect to the origin 29 can be corrected accurately.

Further, the optical axis of the camera 55 can be adjusted at the same time as the X-axis gauge 31, and the adjustment is easy.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the device of the present invention, Fig. 2 is a plan view for explaining the relationship between the numerically controlled plate material gripping movement positioning device, the theoretical origin and the check hole position, and Fig. 3 is a - cross section of Fig. 2. 4 is a view taken along the - arrow in FIG. 3, and FIG. 5 is a view taken along the - arrow shown in FIG. 3. Explanation of the symbols representing the main parts of the drawings, 1...Blanking shear (plate material processing machine), 19...Plate material,
21...Abutment, 29...Origin, 31...X-axis gauge, 33...Check hole, 37, 55...
CCD camera (image sensor).

Claims (1)

[Scope of utility model registration request] The work table 7 that supports the plate material 19 is provided with a moving positioning device for moving and positioning the plate material 19 in the X-axis and Y-axis directions, and an X-axis gauge 31 for positioning the origin of the plate material 19 in the X-axis direction is attached to the workpiece. A camera support device for a plate material processing machine is provided that can freely appear and retract from the upper surface of a table 7, and a second bracket 57 is provided on the bracket 51 that supports the X-axis gauge 31 so that its position can be adjusted in the X-axis direction. A sliding bracket 59 is vertically supported on the second bracket 57 and is finely adjustable in the X-axis and Y-axis directions.A mounting plate 63 is rotatably supported on the sliding bracket 59 via a horizontal hinge pin 61. A camera support device for a plate material processing machine, characterized in that a camera 55 is mounted to take an image of the check hole 33 formed in the plate material 19.