JP5551535B2 - Processing head support device - Google Patents

Description

  The present invention relates to a processing head support device that supports various processing heads such as a laser processing head, a plasma processing head, a water jet processing head, and the like. More specifically, the processing head is moved in the X and Y axis directions. The present invention relates to a machining head support device that can easily swing and tilt a machining head when the machining head collides with a part of a workpiece, a part of a machining machine, or the like when cutting or welding a workpiece.

  For example, in a processing machine such as a laser processing machine, when a laser processing head collides (contacts) with a part of a workpiece or a part of a processing machine, it immediately swings and tilts to prevent damage to the processing head. It is configured. And when the swing inclination of the machining head is detected, the movement of the machining head is immediately stopped. Note that there is Patent Document 1 as a prior art document considered to be related to the present invention.

JP 2006-123163 A

  Conventionally, there is a configuration as shown in FIG. 5 as a configuration for supporting a processing head such as a laser processing head. That is, in the configuration shown in FIG. 5, the processing head support member 103 for supporting the processing head 101 is provided with a plurality of springs 105. The machining head 101 is biased upward by the plurality of springs 105, and the upper surface of the machining head 101 is in contact with the lower surface of the machining head support member 103. A pressure chamber 107 to which air is supplied is provided on the upper surface of the processing head 101, and the pressure chamber 107 is provided with a pressure sensor (not shown).

  When the machining head 101 moves relative to the workpiece in the X and Y axis directions to process the workpiece, the machining head 101 is obstructed by a part of the workpiece or a part of the processing machine. When the machining head 101 is rocked and tilted in contact with 109, the pressure chamber 107 is opened and the pressure is reduced, so that the machining head 101 is detected as having come into contact with (impacts) the obstacle 109. Is.

  In the above configuration, the machining head 101 swings and tilts with the peripheral edge 111 of the machining head support member 103 as a fulcrum. Therefore, the dimension from the peripheral portion 111 as the fulcrum to the center of gravity of the machining head 101 is large, the moment for swinging and tilting the machining head 101 is increased, and further improvement in speeding up the response. Is required.

The present invention has been made in view of the above-described problems, and is a processing head support device that supports a processing head such as a laser processing head, and a head support member provided perpendicularly to a support frame in a processing machine. the swing support member provided with swingably supported in the X axis direction is a longitudinal direction of the shape, provided to bias the swing support member to said head supporting member side, the left and right on the rocking support member A Y-axis oscillating support member supported so as to be able to oscillate in the Y-axis direction, which is the direction, and between the Y-axis oscillating support member and the head support member, the Y-axis oscillating support member Is provided with a return means for returning the head to the original position, and a processing head mounting portion for mounting the processing head on the Y-axis oscillating support member.

  According to the present invention, the fulcrum when the machining head swings and tilts in the X-axis direction and the gravity center position of the machining head and the fulcrum when the machining head swings in the Y-axis direction and the gravity center position of the machining head can be brought close to each other. Thus, the moment when the machining head is swung and tilted can be reduced. Therefore, when the machining head collides with an obstacle, the machining head can be tilted with a small moment, and the response speed from when the machining head abuts on the obstacle until it tilts is increased. The collision of the machining head against the obstacle can be detected at higher speed.

1 is a side sectional explanatory view conceptually and schematically showing a configuration of a machining head device according to an embodiment of the present invention. It is front explanatory drawing which showed notionally and schematically the structure of the processing head apparatus. It is operation | movement explanatory drawing which shows the state which the process head rock | fluctuated and inclined in the X-axis direction. It is operation | movement explanatory drawing which shows the state which the process head rock | fluctuated and inclined in the Y-axis direction. It is a schematic explanatory drawing of the conventional head support structure.

  1 and 2, a processing head support device 3 for supporting a processing head 1 such as a laser processing head in a laser processing machine or a plasma processing head in a plasma processing machine includes a laser processing machine, a plasma processing machine, and the like. A head support member 7 integral with the support frame 5 in the processing machine is provided vertically. On the front surface (right side surface in FIG. 1) of the head support member 7, a circular swing support member 11 swings in the X-axis direction (front-rear direction) via a pivot 9 attached horizontally to the head support member 7. It is supported so that it can be tilted. In other words, the pivot 9 passes through a vertical hole provided in the swing support member 11. The swing support member 11 is urged by an urging force of an elastic member 13 such as a coil spring or a disc spring elastically mounted between a flange portion 9F provided at the distal end of the pivot 9 and the swing support member 11. Is pressed and urged to come into surface contact with the head support member 7.

  A swing support member 15 in the Y-axis direction is supported on the swing support member 11 so as to swing vertically and in the Y-axis direction. The Y-axis oscillating support member 15 is appropriately provided with, for example, a bolt hole or the like for attaching the processing head 1 to the front surface 15F of the Y-axis oscillating support member 15 with an attachment (not shown) such as a bolt. Machining head mounting portion (not shown). A return means for returning the Y-axis swing support member 15 swinging and tilting in the Y-axis direction to the original position between the Y-axis swing support member 15 and the head support member 7. 17 is provided.

  More specifically, the lower surface of the head support member 7 is formed with an arcuate arcuate surface 19 centered on the pivot 9, and the central portion of the arcuate surface 19, that is, a vertically lower position of the pivot 9. Is formed with a V-shaped engaging recess 21. Then, an engaging member 25 such as a spherical body that can be engaged and disengaged with respect to the engaging recess 21 is provided on the projecting portion 23 in the X-axis direction provided at the lower end of the Y-axis swing support member 15. An elastic member 27 such as a coil spring that is pressed and biased toward the engagement recess 21 is provided.

  Since the relationship between the engagement recess 21 and the engagement member 25 is a relative relationship, the engagement recess 21 is provided on the Y-axis direction swing support member 15 side, and the engagement member 25 is supported by the head. A configuration provided on the member 7 side is also possible.

  As already understood, since the machining head 1 is configured to be attached to the front surface 15F of the Y-axis oscillating support member 15, the degree of freedom of attachment of the machining head 1 to the Y-axis oscillating member 15 is increased. It is. Therefore, it is possible to adjust the mounting position of the machining head 1 in the vertical direction so that the position of the center of gravity of the machining head substantially coincides with the axis of the pivot shaft 9. When the machining head 1 is moved relative to the workpiece in the X and Y axis directions, and collides with an obstacle and swings in the X axis direction, FIG. As shown in B), the Y-axis direction swing support member 15 engaged with the swing support member 11 is swung around the upper edge 15U and the lower end edge 15L of the rearward protruding portion 15R as fulcrums.

  Therefore, by adjusting the mounting position of the machining head 1 up and down, the fulcrum when the Y-axis oscillating support member 15 is oscillated and inclined in the X-axis direction and the gravity center position of the machining head 1 are arranged close to each other. Thus, the moment when the Y-axis direction swing support member 15 swings and tilts in the X-axis direction can be reduced. In other words, the Y-axis oscillating support member 15 can be oscillated and inclined in the X-axis direction with a small force, and the response speed oscillating and inclining when the machining head 1 comes into contact with the obstacle. Can be improved.

  When the Y-axis direction swing support member 15 swings and tilts in the X-axis direction, the swing tilt is detected by an appropriate sensor such as an optical sensor, and the movement of the machining head 1 is stopped. It is. As this optical sensor, for example, it is possible to adopt a configuration that detects reflected light of light irradiated to the central portion of the upper surface of the Y-axis direction swing support member 15. According to this configuration, the swing inclination of the Y-axis direction swing support member 15 in the Y-axis direction can be detected by the optical sensor.

  As described above, after the machining head 1 comes into contact with an obstacle and swings and tilts in the X-axis direction, when the contact is released, the original state is restored by the urging force of the elastic member 13. .

  As described above, when the machining head 1 is moved relative to the workpiece in the X- and Y-axis directions and abuts against an obstacle and swings and tilts in the Y-axis direction, as shown in FIGS. As shown, the Y-axis direction swing support member 15 swings and tilts in the Y-axis direction around the pivot 9 (as a fulcrum). Therefore, the Y-axis direction swing support member 15 can be swung and inclined in the Y-axis direction with a small force. When the swing inclination of the Y-axis swing support member 15 in the Y-axis direction is detected by an appropriate sensor, the movement of the machining head 1 in the X- and Y-axis directions is stopped.

  The detection of the swing of the Y-axis swing support member 15 in the Y-axis direction is performed before the engagement member 25 is largely detached from the engagement recess 21 in the return means 17. When the engagement member 25 is pressed and urged by the elastic member 27 in the direction of the engagement recess 21, when the contact with the obstacle is released (released), the Y-axis direction swing support member Reference numeral 15 denotes a return to the original state.

  As can be understood from the above description, since the machining head 1 is attached to the front surface of the Y-axis oscillating support member 15, the degree of freedom of attachment of the machining head 1 is increased and the machining head 1 can be moved in the vertical direction. The dimensions can be reduced. Further, the center of gravity of the machining head 1 can be mounted in a state close to the fulcrum when the Y-axis direction swing support member 15 is swung. When the machining head 1 moves in the X and Y axis directions relative to the workpiece and performs machining, when the machining head 1 comes into contact with an obstacle, the Y axis direction swing support member 15 is moved. However, it is oscillated and tilted in an appropriate direction with the position close to the pivot 9 or the pivot 9 as a fulcrum.

  Therefore, even when the contact force of the machining head 1 against the obstacle is small, the Y-axis direction swing support member 15 can be easily swung and tilted, and the contact of the machining head 1 with the obstacle ( (Collision) can be detected easily and quickly. That is, for example, when the workpiece as a product has a flange that is easily deformed, the movement of the machining head 1 can be immediately stopped without imparting deformation to the product.

DESCRIPTION OF SYMBOLS 1 Processing head 3 Processing head support apparatus 5 Support frame 7 Head support member 9 Pivot 11 Oscillation support member 13, 27 Elastic member 15 Y-axis direction oscillation support member 17 Return means 21 Engagement recessed part 25 Engagement member

Claims (1)

A processing head support device for supporting a processing head such as a laser processing head, wherein a circular swing support member is swung in the X-axis direction, which is a front-rear direction, on a head support member provided perpendicular to a support frame in a processing machine. The Y-axis is provided so as to be movable, and is provided by biasing the swing support member toward the head support member , and is supported by the swing support member so as to be swingable in the Y-axis direction which is the left-right direction. And a return means for returning the Y-axis swing support member to its original position between the Y-axis swing support member and the head support member, and A processing head support device comprising a processing head mounting portion for mounting a processing head on a Y-axis direction swing support member.

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