JP4216536B2 - Laser punch combined processing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a laser / punch combined processing machine.
[0002]
[Prior art]
As a laser / punch combined processing apparatus, for example, there is a laser / punch combined processing machine as disclosed in Japanese Patent Application Laid-Open No. 2000-24851 which is the invention of the present applicant.
[0003]
This laser / punch combined processing machine (1) is a combined processing machine based on a known turret punch press, and the laser processing head (23) moves in the -Y direction from the punching position (Pk) of the turret punch press. The position is slightly offset (Lk). That is, laser processing is performed at this position (Lk).
[0004]
In the laser / punch combined machine (1) as described above, when laser processing is performed on the workpiece (W), the workpiece (W) is moved to the laser processing position (Lk) using XY positioning means of a turret punch press. The laser processing is performed after positioning.
[0005]
In the XY positioning means described above, a carriage base (11) extending across the main body frame (3) in the X-axis direction is provided so as to be movable in the Y-axis direction, and a work clamp (13) is provided on the carriage base (11). ) Is provided so as to be movable in the X-axis direction. The carriage base (11) is integrally provided with a side table (9) for holding the workpiece (W).
[0006]
[Problems to be solved by the invention]
When the workpiece (W) is positioned at the punching position (Pk) or the laser processing position (Lk) by the above-described XY positioning means, particularly when moving and positioning in the Y-axis direction, the carriage base (11), side Since the table (9), the carriage (15), the work clamp (13) and the whole work (W) are moved simultaneously, the mass of the movable body in the Y-axis direction can be obtained even in a standard size laser / punch combined machining apparatus. Is over 1,200kg.
[0007]
Therefore, the inertia of the moving body in the Y-axis direction is large, it is difficult to speed up the movement positioning in the Y-axis direction, and the output of the Y-axis drive motor is larger than the output of the X-axis motor. There are problems such as the need for things.
[0008]
In particular, since laser processing performs continuous curve processing, the influence of positioning accuracy on processing accuracy is greater than punching processing that requires movement from point to point. In other words, there is a problem that the shape accuracy of the product is greatly affected.
[0009]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a laser / punch combined processing machine capable of high-speed positioning during laser processing.
[0010]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, the laser punch combined processing machine according to claim 1 is a pair of upper and lower mold holders that respectively hold an upper mold and a lower mold, and are held by the mold holder. In a punch press having a die striking means for hitting the upper die and punching a workpiece positioned at a punching position on the lower die, the laser beam is focused on the workpiece. A flexible laser processing head is provided so as to be movable in the Y-axis direction, and an X-axis carriage provided with a work clamp on a Y-axis carriage base provided so as to be movable in the Y-axis direction is provided so as to be movable, and rotated to the punch press. And a Y-axis drive means for rotationally driving a nut engaged with the Y-axis feed screw is provided on the Y-axis carriage base, and the laser processing head It is an gist in that a Y-axis driving means for rotating the nut for engaging the Y-axis feed screw.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
1 and 2 are a front view and a plan view of a laser / punch combined processing machine 1 according to the present invention. The laser / punch combined processing machine 1 is a combined processing machine based on a turret punch press.
[0013]
The main body frame 3 has a structure in which both sides of the upper frame 3a and the lower frame 3b are integrally connected by a column 3c. A work space 5 is formed between the upper frame 3a and the lower frame 3b.
[0014]
As shown well in FIG. 3, on the left side of the work space 5, an upper turret disk 9 which is a mold holder for holding a plurality of upper molds (punches) 7 is vertically suspended from the upper frame 3a so as to be able to be rotated and indexed. is there.
[0015]
Below the upper turret disk 9, a lower turret disk 13, which is a mold holder for holding a plurality of lower molds (dies) 11 paired with the upper mold (punch) 7, is rotated and indexed on the lower frame 3b. It is possible.
[0016]
The upper turret disk 9 and the lower turret disk 13 described above are provided so as to be rotatable synchronously by a driving means (not shown), and a pair of an upper die (punch) 7 and a lower die (die) 11 used for punching is punched. The rotation can be indexed to the position Pc.
[0017]
As shown in FIG. 3, the upper die (punch) 7 held on the above-described upper turret disk 9 is held at a certain height by a lifter spring mechanism (not shown), and is in a punching position. A die striking means 15 for striking the punch head 7a of the upper die (punch) 7 is provided on the upper frame 3a above the upper die (punch) 7 in Pc so as to be movable up and down. Note that a lifting mechanism using a hydraulic cylinder or a crank is generally used for the die striking means 15.
[0018]
On the right side of the work space 5, there is provided a Y-axis carriage base 19 having a rectangular cross section that is movably engaged with a pair of Y-axis guide rails 17 provided on both sides in the X-axis direction above the lower frame 3b.
[0019]
The Y-axis carriage base 19 extends across the upper part of the lower frame 3b and extends to both sides in the X-axis direction (direction perpendicular to the paper surface in FIG. 1). A fixed table 21 that supports the workpiece W is provided on the right upper surface of the lower frame 3b and around the lower turret disk 13.
[0020]
In addition, as shown in FIG. 2, the workpiece support member 23 for supporting the workpiece W is provided on the surface of the fixed table so as not to damage the back surface when the workpiece W is moved. As the workpiece support member 23, for example, a brush is implanted on the table surface, or a plastic free bearing or the like is attached at an appropriate interval.
[0021]
The Y-axis carriage base 19 is attached with side tables 25 that move integrally with the Y-axis carriage base 19 in the Y-axis direction on both sides of the fixed table 21 described above. The workpiece support member 23 is also attached to the side table.
[0022]
As shown in FIG. 3, a pair of X-axis guides provided on the Y-axis carriage base 19 include an X-axis carriage 29 provided with a plurality of work clamps 27 for gripping the workpiece W. The rail 31 is movably engaged.
[0023]
An X-axis feed screw 33 extending in the X-axis direction is rotatably supported inside the Y-axis carriage base 19 having a rectangular cross section, and a nut member 35 provided on the X-axis carriage 29 is supported by the X-axis feed. Screwed onto the screw 33. An X-axis motor 37 is provided at an end of the X-axis feed screw 33, and the X-axis carriage 29 can be moved and positioned to a desired position by appropriately rotating the X-axis motor 37. ing.
[0024]
A shaft end is fixedly supported by a support member 41 fixed to the upper frame 3a by a Y-axis feed screw 39 extending substantially horizontally in the Y-axis direction in a state where the rotation is restricted. On the other hand, the Y-axis carriage base 19 is provided with Y-axis drive means 45 that rotationally drives a nut 43 that engages with the Y-axis feed screw 39.
[0025]
4 and 5 show an example of the configuration of the Y-axis drive means 45 described above.
[0026]
3 to 5, the Y-axis driving means 45 has a housing 49 integrally provided with a bracket 47 for coupling to the Y-axis carriage base 19, and the Y-axis feed screw is provided in the housing 49. A nut 43 that engages 39 is rotatably supported by a pair of thrust bearings 51 while restricting axial movement.
[0027]
The nut 43 is provided with a worm wheel 53, and a worm shaft 57 having a worm gear 55 engaged with the worm wheel 53 is restricted in axial movement by a thrust bearing 59, and via a pair of radial bearings 61. And is pivotally supported.
[0028]
A Y-axis motor 65 having a drive pulley 63 attached to the output shaft is attached to the side surface of the housing 49, and a drive belt 69 is wound around a driven pulley 67 provided on the worm shaft 57.
[0029]
When the Y-axis motor 65 is rotationally driven in the Y-axis drive means 45 configured as described above, the worm shaft 57 is rotated, and the worm wheel 53 is rotated by the worm gear 55 and simultaneously the nut 43 is rotated. Since the rotation of the Y-axis feed screw 39 is restricted, the nut 43 moves together with the housing 49, and as a result, the Y-axis carriage base 19 moves in the Y-axis direction via a bracket 47 provided integrally with the housing 49. Will do.
[0030]
Therefore, the workpiece W gripped by the work clamp 27 mounted on the X-axis carriage 29 can be moved and positioned at appropriate positions on the X and Y axes.
[0031]
The origin Lc of the laser processing head 71 is set at a position slightly offset in the −Y direction from the punching processing position Pc. The laser beam LB from the laser oscillator 73 is guided to the laser processing head 71 by bend mirrors 75 and 77. The laser beam LB guided to the laser processing head 71 is a known lens such as a condenser lens. A condensing optical system (not shown) is provided on the surface of the workpiece W so as to be capable of condensing light.
[0032]
As shown in FIGS. 6 and 7, the laser processing head 71 includes a Y-axis drive unit 45 ′ similar to the Y-axis drive unit 45 described above. The same components as those of the Y-axis driving unit 45 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0033]
A second Y-axis guide 79 provided parallel to the Y-axis is slidably engaged with the housing 49 of the Y-axis driving means 45 ′, and at the same time, a nut 43 provided on the housing 49 is provided with a Y-axis feed screw. 39 is screwed. The second Y-axis guide 79 is fixedly supported at both ends by a support member 41 that supports the Y-axis feed screw 39.
[0034]
When the Y-axis motor 65 of the Y-axis drive unit 45 ′ is rotationally driven in the laser processing head 71 having the above configuration, the laser processing head 71 moves in the Y-axis direction.
[0035]
Therefore, the laser processing head 71 can be moved and positioned at an arbitrary position in the Y-axis direction of the workpiece W at a high speed, and the Y-axis drive unit 45 is operated to move the Y-axis carriage base 19 to the Y-axis. By moving to an arbitrary position in the axial direction, the laser processing head 71 can be positioned at an arbitrary position (x, y) on the workpiece W.
[0036]
As described above, according to the laser / punch combined processing machine according to the present invention, since the Y-axis feed screw of the Y-axis carriage base 19 and the laser processing head 71 is shared, one expensive Y-axis feed screw is used. can do.
[0037]
In addition, the Y-axis feed during laser processing determines the movement position of only a lightweight laser processing head, and the X-axis feed uses a relatively lightweight X-axis carriage, so that it can be moved and positioned at a high speed. Cutting with high shape accuracy is possible.
[0038]
【The invention's effect】
According to the first aspect of the present invention, the Y-axis feed at the time of laser processing moves and positions only a lightweight laser processing head, and the X-axis feed uses a relatively lightweight X-axis carriage. Moving positioning becomes possible, and cutting with high shape accuracy becomes possible.
[0039]
In addition, since the Y-axis feed screw for the Y-axis carriage base 19 and the laser processing head 71 is used in common, the number of expensive Y-axis feed screws becomes one and the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view of a combined laser / punch machine 1 according to the present invention.
2 is a plan view of FIG. 2. FIG.
3 is a cross-sectional view taken along line AA in FIG.
4 is a sectional view taken along line BB in FIG.
5 is a cross-sectional view taken along the line CC in FIG.
6 is a cross-sectional view taken along the line DD in FIG. 3;
7 is a cross-sectional view taken along the line E-E in FIG. 6;
[Explanation of symbols]
1 Laser punch combined processing machine 3 Body frame
3a Upper frame
3b bottom frame
3c Column 5 Work space 7 Upper die (punch)
9 Upper turret disk 11 Lower mold (die)
13 Lower turret disk 15 Die hitting means 17 Y-axis guide rail 19 Y-axis carriage base 21 Fixed table 23 Work material support member 25 Side table 27 Work clamp 29 X-axis carriage 31 X-axis guide rail 33 X-axis feed screw 35 Nut Member 37 X-axis motor 39 Y-axis feed screw 41 Support member 43 Nut 45 Y-axis drive means 47 Bracket 49 Housing 51 Thrust bearing 53 Worm wheel 55 Worm gear 57 Worm shaft 61 Radial bearing 63 Drive pulley 65 Y-axis motor 67 Driven pulley 69 Drive Belt 71 Laser processing head 73 Laser oscillators 75, 77 Bend mirror 79 Second Y-axis guide Lc Origin of laser processing head LB Laser beam Pc Punching position W Workpiece

Claims (1)

A pair of upper and lower mold holders that respectively hold the upper mold and the lower mold, and the workpiece that is positioned at the punching position on the lower mold by striking the upper mold held by the mold holder. In a punch press having a die striking means for punching a workpiece, a laser processing head capable of focusing and irradiating a laser beam on the workpiece is provided so as to be movable in the Y-axis direction, and is movable in the Y-axis direction. An X-axis carriage provided with a work clamp is provided on the Y-axis carriage base provided on the Y-axis carriage so that it can be moved and positioned. The punch press is provided with a Y-axis feed screw whose rotation is restricted, and a nut engaged with the Y-axis feed screw is rotated. Y-axis driving means for driving is provided on the Y-axis carriage base, and Y-axis driving means for rotationally driving a nut that engages with the Y-axis feed screw is provided on the laser processing head. Laser-punch composite processing machine according to symptoms.

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