JP2009248105A - Device for mounting position recognizing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a vision sensor-mounting device with which the vision sensor is protected from vibration which is generated when punching and also accurate positioning is possible in an apparatus in which the vibration of ≥2G is generated when performing working with an iron core punching device, a turret punch, a press or the like. <P>SOLUTION: The vision sensor mounting device 5 is composed of a bracket body 9, bracket hinge parts 10, vibration proof rubbers 11 and tables 15 on which fixing pins 14 are attached. When performing measurement, the bracket body 9 is fixed by controlling longitudinal movement by pneumatically controlling the tables 15 on which the fixing pins 14 are is mounted with cylinders 13 which are provided on the press stand 6 and inserting the fixing pins 14 into holes for pins provided on both right and left side faces of the bracket body 9. When performing working, the bracket body 9 is supported by the vibration proof rubbers 11 and body fixing blocks 12 by removing the fixing pins 14 from the holes for pins holes which are provided on both right and left side faces of the bracket body 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a position recognition device mounting device used for a device that generates vibrations during machining, such as an iron punching device.

In the conventional iron punching device, the shaft hole having the keyway of the iron core plate as the work is positioned according to the shaft hole fitting portion of the jig, and the iron core punching is performed. Therefore, in order to increase the punching accuracy, it is necessary to increase the accuracy of the shaft hole of the iron core plate and the accuracy of the fitting portion of the shaft core. It was.
In order to improve workability, it is conceivable that the accuracy of the shaft hole of the iron core plate and the accuracy of the fitting part of the shaft hole will not be made high, but the positioning accuracy can be improved by the vision sensor and the punching accuracy can be made high. Since vibrations of 2G or more sometimes occur, a vibration isolation mechanism that can protect the vision sensor from vibrations generated during punching and can be positioned accurately is required.

  Moreover, there existed what was shown in patent document 1 as an observation apparatus which can observe the process shape of a workpiece, without removing a workpiece from a machine tool. The observation device of Patent Document 1 is detachably attached to a processing unit of a machine tool such as an NC milling machine, has a photoelectric conversion device, and has a photoelectric system observation mechanism for observing a workpiece processed by the machine tool, Adjusting means for matching the machining reference axis of the machine.

  Moreover, there existed what was shown in patent document 2 as a machine tool which fixed the camera for the position recognition of a workpiece | work. The machine tool of Patent Document 2 is a machine tool such as a machining center including a head having a spindle on which a tool is detachably attached to a tip and a table on which a workpiece is placed. A base block for supporting a camera for measuring a predetermined position in the workpiece above is fixed, and the main body block and the lens unit are sandwiched between the base block and at least a pair of front and rear arms. The arm and the base block are configured to sandwich the outer periphery of the lens unit at three points.

JP 2005-81497 A JP 2001-225245 A

  In the observation apparatus of Patent Document 1 described above, since the optical axis of the photoelectric conversion apparatus is adjusted to be the same as the Z axis, an operation for searching for a processed part of the workpiece by exchanging the cutting tool and the observation apparatus. The state of the surface of the workpiece can be observed without performing the process, and there is a problem that it cannot be used for an iron punching device that does not have a structure for exchanging tools during machining.

Further, in the above-mentioned Patent Document 2, in an automatic (NC control) machine tool for drilling a printed circuit board of an electronic component as a workpiece, for example, a position (base) that moves integrally with a head provided with a spindle A CCD camera for position recognition is attached to the block), and the coordinates of the reference mark previously attached to the printed circuit board are read by the camera, and the table and the spindle block are relatively moved in the XY direction from the position of this reference mark. It was moved and drilled at a predetermined position, but when the head moved at a high speed, the lens part in the free state fluctuated and vibrated, causing the imaged screen to shake and position measurement ( To solve the problem that position recognition is difficult or inaccurate,
There has been a problem that it cannot be used in an iron punching device that generates a vibration of 2 G or more when punching an iron core.

  The present invention has been made to solve the above-described problems. In an apparatus that generates a vibration of 2G or more during processing, such as an iron punching device, a saucer pan, or a press, the vibration generated when the vision sensor is punched. The object is to obtain a vision sensor mounting device that can protect and accurately position.

  A position recognition device mounting apparatus according to the present invention comprises: a fixing device that fixes a bracket body that fixes the position recognition device to a processing machine; and an elastic body that elastically supports the bracket body to the processing machine. The fixing device has a mechanism for releasing the bracket main body from being fixed to the processing machine. During the measurement, the bracket main body is fixed to the processing machine, and during the processing, the fixing by the fixing device is released, and the bracket main body is released from the elastic body. It is intended to be supported by.

The position recognition device mounting device according to the present invention increases the positioning accuracy by fixing the position recognition device at the time of measurement, and protects the position recognition device from vibration by support by an elastic body at the time of processing.
Even in devices that generate vibrations of 2G or more during processing, such as iron core punching devices, saucepans, and presses, the positioning accuracy can be increased without increasing the accuracy of the shaft hole of the iron core plate and the accuracy of the shaft hole fitting part. Workability is improved and automation becomes easy.

Embodiment 1 FIG.
1 is a front view of a press machine equipped with a vision sensor mounting apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a plan view of the press machine equipped with a vision sensor mounting apparatus according to Embodiment 1 of the present invention. is there.
In the figure, 1 is a pedestal, 2 is a work transfer unit movable in the Y-axis direction, 3 is a work fixing unit for fixing a work to be described later on the work transfer unit 2, and 4 is a vision sensor as a position recognition device. 5 is a vision sensor mounting device for mounting the vision sensor 4, 6 is a press frame as a processing machine, 7 is a mold, 8 is a workpiece, 12 is a main body fixing block, 13 is a cylinder, and 15 is a table moved by the cylinder 13. is there.

FIG. 3 is an explanatory diagram of workpiece position correction in a press machine equipped with the vision sensor mounting device according to Embodiment 1 of the present invention. In the figure, reference numeral 8 a denotes a keyway of the work 8.
FIG. 4 is an explanatory diagram of workpiece conveyance in a press machine equipped with the vision sensor mounting device according to Embodiment 1 of the present invention. In the side view of the press machine, the workpiece fixing unit 3, the workpiece 8, and the vision sensor 4 are shown. The positional relationship of the mold 7 will be described. 4A shows a workpiece loading and workpiece fixing state, FIG. 4B shows a workpiece angle observation state at a measurement position, and FIG. 4C shows a workpiece machining position moving state.

The operation of the press machine according to Embodiment 1 of the present invention will be described with reference to FIGS.
(1) The work 8 is put into and fixed to the work fixing part 3 arranged in the work conveyance part 2 arranged in front of the gantry 1. (Fig. 4 (a))
(2) Next, the workpiece 8 is conveyed by the workpiece conveyance unit 2 to below the vision sensor 4 that is the measurement position (movement in the Y-axis direction).
(3) As shown in FIG. 3, the vision sensor 4 measures the angle of the workpiece 8 by the keyway 8a of the workpiece 8, and the control device (not shown) compares it with the reference machining point position. In the case of exceeding, the workpiece fixing part 3 is rotated in the C-axis direction to correct the position of the workpiece 8 to the normal machining point position. (Fig. 4 (b))
(4) After correcting the position of the work 8, the work transport unit 2 is operated to transport the work 8 to a work machining position further behind the gantry 1 (movement in the Y-axis direction).
(6) At the workpiece machining position, the workpiece 7 is punched and machined by driving the die 7 up and down with the press gantry 6. (Fig. 4 (c))

5 and 6 are diagrams showing the configuration of the vision sensor mounting apparatus 5 on which the vision sensor 4 according to the first embodiment of the present invention is mounted. FIG. 5 shows a state at the time of measurement, and FIG. 6 shows a state at the time of processing. FIG.
In the drawing, 9 is a bracket body for fixing the vision sensor 4, and 10 is a bracket hinge portion formed at the left and right ends of the bracket body 9. Anti-vibration rubber 11 is attached to the upper and lower portions of the bracket hinge portion 10, and the bracket main body 9 is connected to the press frame 6 via the main body fixing block 12.
The vision sensor mounting apparatus 5 includes a bracket body 9, a bracket hinge portion 10, an anti-vibration rubber 11, and a table 15 to which a fixing pin 14 described later is attached.
Here, various types of vibration can be dealt with by changing the type of the anti-vibration rubber 11 according to the vibration characteristics such as frequency and amplitude.
In the above description, the anti-vibration rubber has been described. However, other anti-vibration materials or elastic bodies such as springs may be used.

At the time of measurement, the cylinder 15 provided on the press gantry 6 controls the movement of the table 15 to which the fixing pin 14 is attached by pneumatic control, and pin holes (not shown) provided on both the left and right side surfaces of the bracket body 9 are measured. ), The fixing pin 14 is inserted, and the bracket body 9 is fixed. (Fig. 5)
When measuring with the vision sensor 4, the bracket body 9 to which the vision sensor 4 is fixed can be fixed by inserting the fixing pin 14 into the pin hole of the bracket body 9 as described above. Position measurement can be performed.

At the time of processing, the fixing pins 14 are removed from pin holes (not shown) provided on the left and right side surfaces of the bracket main body 9, and the bracket main body 9 is supported by the vibration isolating rubber 11 and the main body fixing block 12. (Fig. 6)
At the time of press processing in which a large vibration is generated in the apparatus main body, the vision sensor 4 is in a floating state by removing the fixing pin 14 from the pin hole (not shown), and is hardly affected by the vibration generated during the processing.

Here, the fixing device for fixing the bracket body for fixing the position recognizing device to the processing machine includes a table 15 provided with fixing pins 14 and a cylinder 13 for controlling movement of the table 15. Insert fixing pins 14 into pin holes (not shown) provided on both sides, and fix the bracket body 9.
By removing the fixing pin 14 from the pin hole, the bracket body 9 is released from being fixed to the processing machine, and the vision sensor 4 is brought into a floating state.

As described above, the vision sensor mounting apparatus 5 that mounts the vision sensor 4 according to the first embodiment fixes the vision sensor 4 to the press base 6 so as not to vibrate when measuring the processing point position of the workpiece 8. Since the vision sensor 4 is floated by supporting it through the anti-vibration rubber 11 at the time of pressing, the vision sensor mounting device can protect the vision sensor from vibrations generated during punching and can be accurately positioned. Can be obtained.

In the above description, the main body fixing block 12 and the cylinder 13 are described as being provided on the press frame 6, respectively, but an integral structure may be used.
In the above description, the vision sensor 4 has been described. However, other position recognition devices that can recognize the position of a workpiece such as a camera may be used.
Further, in the above description, the example in which the anti-vibration rubber 11 is attached to the upper and lower portions of the bracket hinge portion 10 that forms the left and right ends of the bracket body 9 has been described. It may be a place such as the center top and bottom, both side surfaces.

Embodiment 2. FIG.
FIG. 7 is a view showing a state at the time of die replacement in a press machine equipped with a vision sensor mounting device according to Embodiment 2 of the present invention. FIG. 8 is a view showing the structure of the bracket hinge portion in the press machine equipped with the vision sensor mounting device according to Embodiment 2 of the present invention. In the figure, the bracket body 16 and the left bracket hinge 10 are connected by a bolt (not shown), and the bracket body 16 and the right bracket hinge 17 are connected by a shaft 18. A washer 19 and a retaining ring 20 are attached to the tip of the shaft 18.
Anti-vibration rubber 11 is attached to the upper and lower portions of the bracket hinge portions 10 and 17, and is connected to the press frame 6 via the main body fixing block 12.

In FIG. 7, the bracket body 16 can be rotated around the shaft 18 by removing a bolt (not shown) connecting the left bracket hinge portion 10 and the bracket body 16.
With the above-described operation, maintenance such as replacement of the molds disposed behind the vision sensor 4 and the bracket body 16 can be easily performed from the front without removing the vision sensor mounting device from the press frame 6. is there.

  In the above description, the bracket main body 16 and the left bracket hinge portion 10 are connected by a bolt (not shown), and the bracket main body 16 and the right bracket hinge portion 17 are connected by a shaft 18. The bracket body and the right bracket hinge part may be connected by a bolt (not shown), and the bracket body, the left bracket hinge part and the shaft 18 may be connected.

  Further, in the above description, an example in which rubber is arranged above and below both left and right ends for vertical vibration has been described. However, the position of the anti-vibration rubber can be changed to right and left instead of above and below both ends depending on the direction of vibration.

  The vision sensor mounting device according to the present invention can switch the anti-vibration function between valid and invalid depending on the situation, and when positioning the machining point, the image sensor is invalidated and the vision sensor is fixed to fix the positioning accuracy. Since the vision sensor is protected from vibration by enabling the anti-vibration function during machining that generates vibration, the vision sensor can be mounted on a machine tool with large vibration such as a press machine. Can be easily built.

It is a front view of the press machine carrying the vision sensor mounting apparatus which concerns on Embodiment 1 of this invention. It is a top view of the press machine carrying the vision sensor mounting apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing of the position correction of the workpiece | work in the press machine carrying the vision sensor mounting apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing of the workpiece conveyance in the press machine carrying the vision sensor mounting apparatus which concerns on Embodiment 1 of this invention. It is a figure (state at the time of measurement) which shows the structure of the vision sensor mounting apparatus 5 which mounts the vision sensor 4 which concerns on Embodiment 1 of this invention. It is a figure which shows the figure (state at the time of a process) which shows the structure of the vision sensor mounting apparatus 5 which mounts the vision sensor 4 which concerns on Embodiment 1 of this invention. It is a figure which shows the state at the time of metal mold | die replacement | exchange in the press machine carrying the vision sensor mounting apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the structure of a bracket hinge part in the press machine carrying the vision sensor mounting apparatus which concerns on Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Stand, 2 Work conveyance part, 3 Work fixing part, 4 Vision sensor, 5 Vision sensor mounting apparatus, 6 Press mount, 7 Mold, 8 Work, 8a Keyway, 9 Bracket main body, 10 Bracket hinge part, 11 Anti-vibration Rubber, 12 body fixing block, 13 cylinder, 15 table, 16 bracket body, 17 bracket hinge, 18 shaft, 19 washer, 20 retaining ring.

Claims (4)

A fixing device for fixing the bracket body for fixing the position recognition device to the processing machine;
In the position recognition device mounting apparatus comprising: an elastic body that elastically supports the bracket body on the processing machine,
The fixing device has a mechanism for releasing the bracket body from being fixed to the processing machine;
At the time of measurement, the bracket body is fixed to the processing machine,
At the time of processing, the position recognition device mounting device characterized in that the fixing by the fixing device is released and the bracket body is supported by an elastic body. A bracket body for fixing the position recognition device;
A table to which fixing pins are attached;
A cylinder provided in the processing machine, for driving the table;
A bracket hinge portion formed in the bracket body and provided with a pin hole corresponding to the fixing pin;
An elastic body attached to an upper part and a lower part of the bracket hinge part;
A body fixing block provided in the processing machine and supporting the bracket body via the elastic body;
A position recognition device mounting device characterized by comprising: At the time of measurement, the fixing pin is inserted into a pin hole provided in the bracket hinge portion, and the bracket body for fixing the position recognition device is fixed to the processing machine,
3. The machining apparatus according to claim 2, wherein the fixing pin is removed from a pin hole provided in the bracket hinge portion during processing, and the bracket body for fixing the position recognition device is supported via the elastic body. The position recognition device mounting device described. 3. The one bracket hinge part connected to the bracket body is connected by a bolt, and the other bracket hinge part connected to the bracket body is connected by a shaft. Position recognition device mounting device.

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