JPH0417360Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to the improvement of water jet processing machines, and is particularly suitable for application to water jet processing machines for processing composite materials.

[Summary of the idea]

This idea uses a vacuum pump to adsorb and fix the workpiece on a workpiece support stand with a honeycomb structure, and also prevents the workpiece from getting wet due to the scattering of machining fluid during machining, and when processing lightweight workpieces. A device that prevents movement of objects or deformation when a workpiece with low rigidity is mounted on the support base, and also allows workpieces whose mounting surface is not flat to be mounted on the support base. It is.

[Conventional technology]

In a conventional water jet processing machine, for example, as shown in FIG. 6, a wire mesh 3 is spread over the opening of a container 2 containing buffered water 1, and the workpiece 4 is placed in the wire mesh 3.
The machining process is carried out by supporting the machine.

However, since the wire mesh 3 is easily bent as shown in the figure, it is difficult for the workpiece 4 to come into full contact with the wire mesh 3. For this reason, the support of the workpiece 4 by the wire mesh 3 tends to be unstable.

Furthermore, when the workpiece 4 is small, the workpiece 4 is likely to be tilted along the flexure of the wire mesh 3 and supported in this state, as shown in FIG. 7.

For this reason, a lattice-shaped support frame is provided under the wire mesh 3,
This could be considered as a means to prevent the above-mentioned deflection, but
Such a support frame is not preferable because it tends to cause the sprayed machining fluid to scatter.

Therefore, as shown in Japanese Unexamined Patent Publication No. 55-106799, the workpiece is supported by a belt-shaped member, and in order to prevent the machining liquid injected from the nozzle from hitting the belt-shaped member, the belt-shaped member is placed directly under the nozzle. Some have grooves formed with members.

That is, in this water jet processing machine, as shown in FIG. 8, both ends 5a of the strip member 5 are
They are respectively attached to horizontal beams 8a of a box-shaped machine frame 8. Further, the carrier 10 carrying the nozzle 9 is configured to be movable along the vertical beam 8b of the machine frame 8.

The carrier 10 has 4 guides for guiding the strip member 5.
rollers 11 and a tank 12 for receiving the injected machining fluid. Therefore, the strip member 5 surrounds the tank 12 and forms a groove 15 just below the nozzle 9 as shown.

In this way, when the carrier 10 moves from side to side in the figure, the groove 15 and the tank 12 move together with the carrier 10, so that the machining liquid injected from the nozzle 9 does not always hit the strip member 5, but directly flows into the tank 12.
be accommodated in.

Also, since the band member 5 does not move left or right in the figure,
The workpiece 4 supported by the strip member 5 is also kept stationary during processing.

[Problem that the invention attempts to solve]

However, in the case of the water jet processing machine shown in FIG. 8, the workpiece 4 is simply placed and supported on the strip member 5, so if the workpiece 4 is lightweight, there is a risk of it moving during processing. There is.

In addition, the surface of the workpiece 4 that comes into contact with the strip member 5 must be flat as shown in the figure because the entire surface needs to be in contact with the strip member 5. If it is not flat, the strip member 5
The support of the workpiece 4 becomes unstable. Furthermore, the above-mentioned processing machines not only have a complicated structure, but also cannot be said to have sufficient measures to prevent the processing fluid from scattering.

In view of the above-mentioned points, the present invention provides a water jet processing machine that can securely hold and fix any workpiece to the workpiece support without deforming it, and also that can reliably prevent the machining fluid from scattering. This is what we provide.

[Means for solving problems]

The present invention consists of a support stand made of a honeycomb structure for supporting a workpiece, a chamber connected below the support stand, and a separation tank that separates the machining fluid and air discharged from the chamber from each other. The waterjet processing machine was equipped with a vacuum pump for suctioning the air in the separation tank, and the workpiece was adsorbed onto the support base and fixed to the support base.

[Effect]

Therefore, unlike the workpiece support stand of conventional waterjet processing machines that uses wire mesh, the support stand is freely given a shape that fits the workpiece in order to securely hold the workpiece. be able to.

Further, since the workpiece is attracted to the support table by suction of the machining liquid and air in the chamber, there is no risk of movement during machining.

Furthermore, since the injected machining fluid is sucked into the chamber by the vacuum pump while being rectified through the honeycomb structure as a passage, there is little risk of it scattering and wetting the workpiece.

〔Example〕

An embodiment in which the present invention is applied to a water jet processing machine mainly used for processing composite materials will be described below with reference to FIGS. 1 to 5.

The water jet processing machine has a box-like shape and a machine frame 8 with legs 16, as shown in FIG.
The vertical feed table 10a of the nozzle 9 is guided at both ends by the machine frame 8 and is movable along the longitudinal beam 8b of the machine frame 8 in the direction of the arrow X in the figure, and the top of this vertical feed table 10a is shown in the figure. A cross-feeding table 10b that is movable in the direction of the arrow Y in FIG.
, a nozzle rotary table 18 which is pivotally connected to the lower end of this nozzle feed table 17 and is swingable around the Z-axis and Y-axis in the figure, a support table 19 for fixing and supporting the workpiece 4, etc. Become. Incidentally, reference numeral 20 indicates a bellows, which is provided for dustproofing the sliding contact portion.

For the support stand 19, a honeycomb structure as shown in FIG. 1 is adopted in order to provide light weight and high rigidity, and the direction of the hole is vertical as shown in the figure. The machining fluid injected from the nozzle 9 flows down the hole while being rectified as a passage, and is accommodated in a chamber 22 that is continuous below the support table 19.

The support stand 19 is connected to the support stand 2 as shown in FIG.
3 and is supported. Furthermore, this pedestal 23
This is constructed by assembling members with angled cross sections into a box shape as shown, and the support base 19 is placed on the horizontal flange of the above members.

The pedestal 23 is connected to a chamber 22, which is divided into chambers 24 by a plurality of partition walls 22a extending in the direction of arrow X in FIG. Furthermore, the bottom wall 24a of each chamber 24 is formed into a funnel shape, and a pipe 26 with a valve 25 extends from the lowest part of the bottom wall 24a.

Next, the pipes 26 of each chamber 24 are connected to one main pipe 29, and this main pipe 2
The end of 9 is connected to a separation tank 30 for separating processing fluid and air.

In the separation tank 30, a filter 31 is installed near the end of the main pipe 29 to separate air from the processing fluid.
The lower end of the filter 31 is attached to a partition wall 30a that has a downwardly curved surface and extends in a substantially horizontal direction.

Next, an exhaust pipe 32 and a drain pipe 33 are connected to the upper and lower ends of the separation tank 30, respectively, and the exhaust pipe 32 is connected to a vacuum pump 36, and the drain pipe 33
are connected to the drain pump 37, respectively. A second filter 38 is provided near the end of the exhaust pipe 32 on the side of the separation tank 30 to further sufficiently separate the processing liquid from the air.

By the way, since the workpiece 4 shown in FIG. 2 has a flat plate shape, in order to bring the workpiece 4 into full contact with the support stand 19 and to reliably support the workpiece 4, it is necessary to attach the support stand 19. The surface 19a may be made flat as shown in the figure. Further, even if the workpiece 4 has a three-dimensional structure as shown in FIG. 3, the same applies as above if the mounting surface 4a of the workpiece 4 is a flat surface.

Next, when the mounting surface 4a of the workpiece 4 is, for example, a curved surface, if the mounting surface 19a of the support base 19 is made to match the curved surface as shown in FIG.
can be brought into full contact with the support base 19.

In other words, in the case of the support base 19 having a honeycomb structure,
Since it is thicker than conventional wire mesh, the shape of the mounting surface 19a can be easily made to match the shape of the mounting surface 4a of the workpiece 4. In the case of FIG. 4, the chamber 22 is not divided into each chamber 24, but the chamber 22 may be configured as shown.

Next, FIG. 5 shows a case where the pedestal 23 is formed in a lattice shape, and the support pedestal 19 is divided and fitted into each lattice frame 39. That is, by configuring the support base 19 in this manner, there is an advantage that even if a part of the support base 19 is damaged, for example, the entire support base 19 does not need to be replaced.

Next, to describe the operation of the above-mentioned water jet processing machine, first, as shown in FIG. The mounting surface 19a of the stand 19 is covered with a shield material 40. Note that if the mounting surface 4a of the workpiece 4 is not flat as shown in FIG. 4, for example,
The support stand 19 is replaced with one that is compatible with the workpiece 4.

Next, a chamber 24 located directly below the workpiece 4
Valve 25 (in Figure 2, counting from the left, 3~
6th valve) and close the remaining valves 25 to drive the vacuum pump 36, the workpiece 4
is attracted and fixed to the support stand 19.

In this case, the main pipe 29 is completely cut off from the chamber 24 with the valve 25 closed;
Since the open chamber 24 is also almost completely covered by the mounting surface 4a of the workpiece 4 and the shield material 40, almost no outside air flows in through the support base 19. The workpiece 4 is thus completely fixed, even if it is lightweight.

Next, as shown by the one-dot chain line in FIG. 5, for example, when cutting out the workpiece 4 in a circular shape,
a. Operate the horizontal feed table 10b or the nozzle feed table 17 to move the nozzle 9 to the above 1 position as shown in FIG.
Move it to a position directly above the dotted chain line.

In this case, if the workpiece 4 is a flat plate as shown in FIG. 2, the nozzle rotating table 18 is operated so that the nozzle is vertical as shown in FIG. Further, when the workpiece 4 has a shape as shown in FIG. 3 or 4, the nozzle rotary table 18 is operated to tilt the nozzle 9 as shown in the figure, so that the cut surface obtained as a result of machining is at the cutting point. Adjust so that it is perpendicular to the nearby upper and lower surfaces.

Next, the machining liquid is injected from the nozzle 9, the drain pump 37 is driven, and the vertical feed table 10a and the horizontal feed table 10b are operated to move the nozzle 9 along the cutout line shown by the one-dot chain line in FIG. By moving , the flat workpiece 4 shown in FIG. 2 can be cut out. Note that when the workpiece 4 has a shape as shown in FIG. 3 or 4, for example,
To adjust the movement of the nozzle 9, it is also necessary to operate the nozzle feed stand 17 and the nozzle rotating stand 18.

By the way, the machining fluid injected from the nozzle 9 during machining of the workpiece 4 with the machining fluid is sucked into the chamber 22 by the vacuum pump 36 together with air. Therefore, scattering of the machining fluid can be kept to a minimum, and wetting of the workpiece 4 can be prevented.

Next, the mixture of processing fluid and air collected from each chamber 24 flows into the separation tank 30 through the main pipe 29, but the air sucked into the vacuum pump 36 is separated from the processing fluid by the filter 31. separated.

Further, the separated machining liquid is collected at the lower part of the separation tank 30 and then led to the drain pipe 33 by the drain pump 37 and discharged from the separation tank 30. Note that the air that has passed through the filter 31 is further sufficiently separated from the processing liquid it contains by a second filter 38, and is then led to an exhaust pipe 32 and discharged from the separation tank 30.

By the way, the processing liquid that has been secondarily separated as described above flows down the slope of the partition wall 30a, and then flows into the separation tank 3.
It merges with the processing liquid collected at the bottom of 0.

Although the present invention has been described above with reference to embodiments, the above-mentioned embodiments do not limit the present invention in any way, and various modifications can be made based on the technical idea of the present invention. For example, each chamber 24 is divided by a partition wall 22a extending in the direction of arrow X, but may be divided by a partition wall extending in the direction of arrow Y. Alternatively, partition walls can be provided in a lattice pattern for division.

Furthermore, in the examples, an example was described in which the present invention was applied to a water jet processing machine mainly used for processing lightweight composite materials, but the present invention can also be applied to water jet processing machines that process a wide range of general materials. can.

In addition, the water jet processing machine according to the present invention is
As is clear from the above embodiments, automation is easy, so it can be used in combination with a robot or N/C.

[Effect of idea]

Since the present invention has the above-described configuration, the rigidity of the support for the workpiece can be easily increased according to the present invention. Therefore, unlike conventional supports using wire mesh, problems such as bending and deforming the workpiece or failure to securely hold the workpiece do not occur.

Further, according to the present invention, since the workpiece is attracted to the support base, there is no fear that the workpiece will move during processing, even if the workpiece is lightweight such as a composite material.

Furthermore, according to the present invention, even if the mounting surface of the workpiece to the support base is not flat, it is easy to change the shape of the support base to match the mounting surface, so that the workpiece can be supported. It can always be held securely on the stand.

Further, according to the present invention, the machining fluid injected from the nozzle passes through the honeycomb-structured support base while being rectified, and is sucked into the chamber together with air by the vacuum pump. Therefore, the workpiece is less likely to be wetted by splashing of the machining fluid.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment in which this invention is applied to a water jet processing machine for processing composite materials. Figure 1 is a perspective view of the same processing machine, and Figure 2 is a - A line sectional view (the workpiece is a flat plate), FIG. 3 is an explanatory diagram of installation of a three-dimensional workpiece, FIG. 4 is an explanatory diagram of installation of a curved workpiece, and FIG. 5 is a plan view of the support base. Moreover, FIGS. 6 to 8 show the support stand of a conventional processing machine, and FIG. 6 is a cut side view of the first example of the above support stand, and FIG.
FIG. 8, which is a partially enlarged view of the example, is a cutaway side view of a second example of the support stand. In addition, in the symbols used in the drawings, 4...workpiece, 19...support stand, 22...chamber, 24...
...Atrioventricular chamber, 25...Valve, 30...Separation tank, 31
... Filter, 36 ... Vacuum pump.

Claims (1)

[Claims for Utility Model Registration] 1. A support stand made of a honeycomb structure for supporting a workpiece, a chamber connected below the support stand, and a process fluid and air discharged from the chamber. Separation tanks that are separated from each other;
A water jet processing machine is provided with a vacuum pump for sucking air in the separation tank, and the workpiece is adsorbed to the support base and fixed to the support base. 2. The water jet processing machine according to claim 1, which is a registered utility model, wherein the chamber is divided into a plurality of chambers, and a valve that can be opened and closed is provided between each chamber and the separation tank. 3 A filter is provided inside the separation tank, and the processing liquid and the air are caused to flow through one side of the filter, and the air is taken out to the other side of the filter by the suction force of the vacuum pump. A water jet processing machine according to claim 1 of the claimed utility model registration.