JPH0235422Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is applicable to punch press machines, shearing machines,
Mainly related to the mounting structure of laser processing machines on sheet metal processing machine tools such as saws.

[Conventional technology]

If a laser cutting machine is installed on the sheet metal cutting machine tool mentioned above, it will be possible to cut pieces with complex shapes that are difficult to process with the main machine tool.
Although this is very convenient, all of the above machine tools generate vibrations during operation, and it is not recommended to simply mount a laser processing machine (especially a laser oscillator) on the machine tool, which is prone to failure when exposed to vibration. Conventionally, the laser oscillator and processing head that make up a laser processing machine were separated.
A laser oscillator was installed separately on the floor, separate from the machine tool, and the laser oscillator and the processing head on the machine tool were connected through a long cylindrical optical path.

[Problem that the invention attempts to solve]

However, if only the laser oscillator is installed separately as described above, not only will extra installation space be required, but the optical path connecting the oscillator and the processing head will become longer, and the number of reflecting mirrors etc. installed in between will also increase. As the number of reflectors increases, the cost increases, and adjusting the angle of the reflector is a troublesome task that requires time and manpower.Moreover, as the number of reflectors increases, the difficulty of this task increases. There was a problem.

[Means for solving problems]

Therefore, this invention provides a new structure for mounting a laser processing machine on a machine tool stock, which solves the above problems at once by allowing the entire laser processing machine including the laser oscillator to be mounted on the machine tool. The gist of this is that the entire laser processing machine, including the laser oscillator, is connected to the machine tool frame via a spring, and the distance between the laser processing machine and the machine tool frame is forced. a clamping device that positions the laser processing machine relative to the machine tool when the laser processing machine is shortened; A fitting member for positioning and guiding at the one point is arranged close to the processing head.

〔Example〕

Figures 2 and 3 are an overall plan view and an overall side view, respectively, of a turret punch press machine as an embodiment of this invention. , a ram 3 is provided which moves up and down via a crank mechanism 2 and constitutes a punching head p together with the tool.
2), a laser processing head L of a laser processing machine 4 mounted according to this invention is provided further forward of the punching head P.

Reference numeral 5 designates a side C-shaped frame that supports the upper and lower turrets 1u, 1l at its bent portions, and supports the punching head P and laser processing head L at its upper front portion; A sheet metal mounting table 6 that supports a sheet metal material W on its upper surface and moves is provided.

That is, 7 is a fixed table that surrounds the lower turret 1l, 8 is a vertically movable table in the form of a blind whose upper surface is at the same height as the fixed table 7, and the fixed table 7 and the vertically movable table 8 are Move the moving tables 9r and 9l to the left and right
It is provided so as to be freely movable in the axial direction. 11 is a rail of the moving table.

This pair of left and right moving tables 9r, 9l is a carriage 13 of a work holder 12 extending in the X-axis direction.
A ball nut (not shown) provided on the lower surface of the movable table 9r and the carriage 13 is connected to a ball screw (not shown) provided on the base frame 14 of the mounting table 6 along the Y-axis direction. (not shown), and is moved between the solid line and the chain line in FIG. 2 by rotation of the ball screw.

Further, the work holder 12 is screwed into a ball screw (not shown) provided in the carriage 13 and runs along the X-axis direction, and is moved to an arbitrary position on the carriage 13 in the X-axis direction by rotation of the ball screw. This is combined with the movement of the carriage 13 itself in the Y-axis direction, so that the sheet metal W held by the work holder 12 can be held at an arbitrary position on the table 6.

Next, the laser processing machine 4 will be explained in detail. As shown in FIG. 1, the laser processing machine 4 includes a laser oscillator (carbon dioxide laser) 1
The frame 16 of the oscillator is vertically installed on the lower front surface of the oscillator 5.
A laser processing head L consisting of cylinder parts 18 and 19 extending in a telescopic manner and a torch part 21 connected to the lower end of the cylinder part 19 is provided on a mounting frame 17 integral with the laser processing head L, which can be moved up and down. The head L has its cylindrical portion 19 fixed 24 to a movable plate 23 that slides up and down on a rail 22 on the mounting frame 17, and a fluid cylinder 25 provided between the movable plate 23 and the mounting frame 17 expands and contracts. It is designed to move up and down.

26 is a slide guide fixed to the back surface of the moving plate 23, and the slide guide 26 is connected to the rail 2.
2 is slidably held.

The laser processing head L is as shown above.
During laser processing, the cylinder 25 is extended and the torch portion 21 is lowered to just above the surface of the sheet metal W on the table 6, and the laser beam is emitted downward from the tip of the torch to perform the processing, and the cylinder 25 is contracted when not during laser processing. and move the torch part 21 to the position shown in Figure 1.
The laser processing machine 4 is installed on the upper surface of the C-shaped frame 5 in the following manner.

That is, in FIGS. 1 and 4 to 7, 27 is a bottom plate that spreads out in the shape of a brim of the frame 16 of the oscillator;
Reference numeral 28 designates the upper plate of the C-shaped frame 5, and air springs 29, which expand and contract by compressed air supplied from an air source (not shown), are disposed at four locations between the upper plate 28 and the bottom plate 27; A clamping device 33 consisting of a fluid cylinder 31 on the bottom plate 27 side and an engaging member 32 on the top plate 28 side is disposed, and female blocks 34a, 35a, 36a on the bottom plate 27 side are provided at three locations shown in FIG. Positioning blocks 34, 35, and 36 consisting of male blocks 34b, 35b, and 36b on the upper plate 28 side are provided, and the fluid cylinder 31 is extended, and the engaging plate 37 at the lower end of the rod 31a is connected to the engaging member 32. If the air spring 29 is filled with compressed air and expanded with an appropriate amount of play (dotted lines in FIGS. 4 and 5), the laser oscillator 15 will be activated by the air spring 29.
is elastically supported on the frame 5 via a chisel;
When the air spring 29 is contracted and the fluid cylinder 31 is also contracted (solid line in FIGS. 4 and 5), the engagement plate 37 moves the engagement member 32 in a direction that shortens the distance d between the bottom plate 27 and the top plate 28. By pulling the blocks 34a, 35a, 36a, 34b, 35b, 3
6b abut against each other, and the laser processing machine 4 is positioned and fixed at an accurate position with respect to the frame 5.

That is, the fluid cylinder 31 has a stroke that is at least larger than the amount of expansion and contraction of the air spring 29, and the positioning blocks 34, 35, 3
6 has a degree of freedom in the planar direction, in which the block 34 is composed of a male block 34b on which a sphere 38 is screwed 39 and a female block 34a having a conical inner circumferential surface 41 into which the sphere 38 is fitted. The blocks 35 and 36 are a male block 35 on which a cylindrical rod 42 is screwed 43.
b, 36b, and female blocks 35a, 36a having a chevron-shaped inner surface 44 into which the cylindrical rod 42 is fitted, the positioning block has a degree of freedom in only one direction in the plane, and the positioning block 35 , 36 are arranged so that their degrees of freedom in the plane direction are directed in directions perpendicular to each other, as shown in the sixth figure, so that even if the frame 16 of the laser oscillator 15 expands slightly due to the heat generated by the oscillator itself, Fitting and positioning is ensured around the positioning block 34.

Further, the positioning block 34 which does not have the degree of freedom in the plane direction is especially provided on the processing head L side of the laser oscillator 15, so that even if the oscillator 15 itself is thermally deformed as described above, the blocks 34, 35,
36 are fitted, the processing head L is positioned at an accurate position with respect to the frame 5, that is, with respect to the sheet metal mounting table 6.

Since the turret punch press machine of the above embodiment is constructed as described above, during punching operation, the fluid cylinder 31 is extended to disengage the engagement plate 37, and the air spring 29 is extended to operate the laser processing machine. 4 is elastically supported together with the oscillator 15 on the frame 5, and punching is performed in such a manner that punch vibrations are not transmitted to the laser oscillator 15.

In addition, during laser processing operation, the air spring 29 is contracted and the fluid cylinder 31 is contracted to engage the engagement plate 37 with the engagement member 32, and the positioning blocks 34, 35, and 36 are fitted together. Since the entire laser processing machine 4 consisting of the oscillator 15 and the processing head L is positioned and fixed at an accurate position with respect to the frame 5, the position of the laser processing head L with respect to the sheet metal mounting table 6 is accurately set. Therefore, the sheet metal W on the table 6 can be freely moved according to the program to perform any cutting process.

Of course, there is no punch vibration during this laser processing operation, so there is no adverse effect such as failure on the laser oscillator 15.

In addition, since the air spring 29 was used in the above embodiment, when the air spring 29 is filled with compressed air and expanded, the laser processing machine 4 is supported by the air elasticity, and the vibration laser processing machine 4 can be operated without causing any resonance phenomenon. At the same time, when the supply of compressed air is stopped and the air spring 29 is contracted, the pressure of the air spring 29 in the direction of lifting the laser processing machine 4 is reduced to zero.
Therefore, the vertical fitting of the positioning blocks 34, 35, and 36 is performed using the weight of the laser processing machine 4 itself and the tensile pressure of the fluid cylinder 31, and the capacity of the fluid cylinder 31 is small. Even if the air spring 29
Of course, a normal spring may be used in place of the spring, and if a normal spring is used, the tensile pressure of the fluid cylinder 31 should be at least greater than that of the normal spring.

Furthermore, the mounting positions of the positioning blocks 34, 35, and 36 are not limited to those of the above embodiment. For example, as shown in FIG. A block 35, 35 having a degree of freedom in one direction in the plane direction is provided on the left and right sides of the positioning block 34, and a block 36 having a degree of freedom in the other orthogonal direction is provided at the other end side in the longitudinal direction of the laser oscillator 15, The influence of thermal deformation on the laser processing head L may be reduced as much as possible.

Furthermore, the machine tool equipped with a laser processing machine is not limited to the above-mentioned punch press machine.

[Effect of idea]

As is clear from the above explanation, in this invention, the laser oscillator is elastically supported via a spring during punch processing, so no malfunctions occur, and during laser processing, the laser oscillator is attached to the machine tool frame using a positioning block and a clamp device. Since it is reliably fixed at an accurate position, accurate laser processing can be performed, and various problems such as the above-mentioned installation space caused by separately placing a laser oscillator can be solved. Furthermore, in the present invention, the fitting member for positioning the laser processing machine is divided into two types: a member that positions and guides the laser processing machine at one point in the plane when the clamp device is shortened, and a member that positions and guides the laser processing machine with a degree of freedom in one direction in the plane. This configuration has the effect that even if the frame of the laser oscillator expands thermally due to heat generation of the oscillator itself, reliable positioning can be performed centering on the fitting member that guides positioning to the above-mentioned one point. In particular, since the fitting member that guides the positioning at the one point is placed close to the processing head, the influence of the thermal expansion can be minimized, and the reduction in processing accuracy caused by positioning errors of the processing head with respect to the sheet metal mounting table can be minimized. problem is solved.

[Brief explanation of drawings]

Figure 1 is a partial side view of a turret punch press machine with a tower-mounted structure and a laser processing machine mounted on it according to this invention, Figures 2 and 3 are an overall plan view and an overall side view, respectively, and Figure 4 1 is a cross-sectional view taken along the - line in FIG. 1, FIG. 5 is a cross-sectional view taken along the - line in FIG. 8 is a schematic plan view showing another arrangement example of the positioning block. 4... Laser processing machine, 5... Frame, 15
...Laser oscillator, 29...Air spring,
31...Fluid cylinder, 32...Engagement member, 33
... Clamp device, 34, 35, 36 ... Positioning block, 37 ... Engagement plate, 38 ... Sphere, 4
1... Conical inner peripheral surface, 42... Cylindrical rod, 44...
Chevron inner surface, L...laser processing head, d...distance.

Claims (1)

[Scope of utility model registration request] This is a mounting structure for a laser processing machine consisting of a laser oscillator and a pressure head on a machine tool, in which the entire laser processing machine is connected to the machine tool frame via a spring, and the laser processing machine and the machine tool frame are mounted A clamping device for forcibly shortening the distance between them and a fitting member for positioning the laser processing machine relative to the machine tool when the distance is shortened are provided between them, and the fitting member is placed at one point in a plane. A machine tool comprising a positioning and guiding member and a positioning and guiding member having a degree of freedom in one direction within a plane, and a fitting member for positioning and guiding at the one point located close to the machining head. Mounting structure of laser processing machine.