JPH0558880B2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is a method for cutting objects (workpieces) such as glass, ceramics, etc. with high-pressure water jet. The present invention relates to a waterjet cutting device that performs polishing.

(Prior art) Conventionally, these types of glass plates, ceramic plates, etc., have been made of hard materials, and moreover, they have been made of hard materials such as easily damaged workpieces or easily affected by heat, such as laminated glass plates. In addition to cutting with a diamond grindstone, the workpiece is also cut with a water jet.

That is, the conventional waterjet cutting device
As shown in FIGS. 3 and 4, when cutting the workpiece W into the shape indicated by the marking line a, the water jet nozzle b, which sprays a water jet with a high-pressure water jet pressure of about 900 kg/cm ² or more, is used to A workpiece W is cut along a scribing line a.

(Problems to be Solved by the Invention) However, in the waterjet cutting device described above, as shown in an exaggerated manner in _FIG . A misalignment occurs in the cut shape between the top surface W ₂ and the bottom surface W ₃ , making it difficult to form an accurate cut surface W ₁ .

In other words, while the upper surface W ₂ of the workpiece W is cut on the normal cutting plane, the lower surface of the workpiece W
W ₃ will be smaller than the regular cutting surface.

In order to solve the above-mentioned difficulties, the present invention has been developed to cut a workpiece with a water jet with a slightly inclined jet nozzle, and when cutting the workpiece with the cutting part perpendicular to the marking line of the workpiece. When cutting the workpiece by forming a closed loop while moving the spray nozzle, the nozzle rotation mechanism is used to prevent the high-pressure hose that supports the base of the spray nozzle from twisting, and to ensure long-term use. To provide a waterjet cutting device capable of cutting a workpiece while preventing the high-pressure hose itself from cracking due to twisting.

(Means for Solving the Problems and Their Effects) The present invention provides for attaching a nozzle socket member to the free end of an operating arm provided on a machine frame so as to be able to move up and down, and also to align the axis of the nozzle socket member. A hanging member is provided so as to be rotatable around the periphery, a slider member is attached to the lower part of the hanging member so as to be movable in the horizontal direction, and the slider member is provided with a hanging member that can be rotated around a horizontal axis perpendicular to the moving direction of the slider member. A bracket is movably mounted, an injection nozzle body is mounted on the bracket so as to be rotatable around an axis perpendicular to the horizontal axis, and the jet flow supply hole of the nozzle socket member and the injection nozzle body are connected to high pressure. It connects with a hose and cuts the workpiece by freely tilting the injection nozzle without twisting the high-pressure hose.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

In FIG. 1, reference numeral 1 denotes a machine frame in a waterjet cutting device;
A bracket 1a is attached to a part of the machine frame 1, and a lifting screw device 2 having a lead screw 2a is vertically attached to the bracket 1a. Further, an actuating arm 3 is provided on the actuating member 2b screwed to the elevating screw device 2 so that it can be raised and lowered horizontally, and a nozzle receiving member is provided at the free end 3a of the actuating arm 3. 4 is mounted vertically. Further, this nozzle socket member 4 includes a jet flow supply hole 5 for supplying high-pressure water and an abrasive material supply hole 6.
This jet flow supply hole 5 is connected to a water jet supply source,
The other abrasive supply hole 6 is connected to an abrasive supply source. Furthermore, on the top surface of the operating arm 3,
A motor 7 is installed, and a drive gear 7a that is rotatably mounted on the output shaft of the motor 7 meshes with a driven gear 8 that is rotatably mounted on the nozzle socket member 4. By driving 7,
A hanging member 9, which will be described later and which is mounted on the nozzle socket member 4, is rotated.

On the other hand, an upper part 9b of a hanging member 9 integral with the driven gear 8 is attached to the free end 3a of the operating arm 3.
A pair of guide rails 10 having a dovetail cross section are attached horizontally to the lower part 9a of the hanging member 9, as shown in FIG. Further, a feed screw rod 11 such as a ball screw is rotatably mounted on the lower part 9a of the hanging member 9 between both guide rails 10, and a slider member is attached to the feed screw rod 11. 12 is screwed on and fitted into both guide rails 10. Further, in the middle of the slider member 12, there is a worm gear 1 that is integrated with the handle 13.
4 is mounted on a shaft in parallel with the guide rail 10 and the feed screw 11, and this worm gear 14 has a
A worm wheel 16 having a rotation shaft 15 mounted perpendicularly thereto is meshed therewith.

On the other hand, a bracket 15a is provided at one end of the rotating shaft 15 to protrude horizontally so as to be located directly below the nozzle receiving member 4, and an injection nozzle 17a is mounted on the bracket 15a. It is mounted on a shaft so that it can rotate downward. Further, this injection nozzle body 17 is attached with an abrasive material supply port 17b, and this abrasive material supply port 17b allows the abrasive material to be supplied through a communication hole 18 formed in a part of the injection nozzle body 17. It is connected to the hole 6 by a supply pipe 19. Further, the jet flow supply hole 5 of the nozzle socket member 4 and the injection nozzle body 17 are connected by a high pressure hose 20,
The nozzle 17a of this injection nozzle body 17 is
It can be rotated freely with respect to the feed screw 11, is held in an inclined state, and can be moved horizontally by the feed screw 11.

Hereinafter, the effects of the present invention will be explained.

Therefore, when cutting a plate-shaped workpiece W along the drawn line, in advance, in order to move the injection nozzle body 17 toward the workpiece W, the lead screw 2a of the lifting screw device 2 is cut.
is driven to raise and lower the operating arm 3 to a predetermined height.

Next, the feed screw 11 shown in FIG. 2 is rotated by a handle not shown to open the injection nozzle body 1.
7 horizontally along the guide rail 10, the handle 13 is rotated, and the worm gear 14 integrated therewith is rotated. Then, the rotating shaft 15 integrated with the worm wheel 16 that meshes with the worm wheel 16 is rotated, and the injection nozzle body 17 is adjusted to the cutting conditions (here, including the type of workpiece, material, cutting speed, and cutting pressure). Tilt.

Next, a water jet of approximately 900 kg/cm ² or more is supplied to the injection nozzle body 17, and the fifth
As shown in the figure, nozzle 1 of the injection nozzle 17
7a is slightly inclined, and the water jet of this injection nozzle 17 is applied to the upper surface W ₂ of the workpiece W and its bottom surface.
If the cutting part between W ₃ is cut from diagonally above,
While the cut surface W ₁ on the workpiece W side is vertical, when the motor 7 is driven, the hanging member 9 that is integrated with the driven gear 8 is slowly rotated around the nozzle socket member 4 due to the rotation of the motor 7. This eliminates the twisting effect on the high pressure hose 20 that occurs during cutting.

Note that the jet nozzle body 17 can also polish the cut surface of the workpiece W by using an abrasive together with it during cutting.

〔Effect of the invention〕

As described above, the present invention has an injection nozzle body rotatably mounted on a bracket about an axis perpendicular to the horizontal axis, and a jet flow supply hole of the nozzle socket member and the injection nozzle body are connected to high pressure. Since a nozzle rotation mechanism connected by a hose is provided, there is no risk of twisting the high pressure hose, and the injection nozzle body can be cut at an angle according to the cutting conditions. Since it is easy to handle and operate, it has excellent effects such as being able to be used by being attached to a robot.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a part of the water jet cutting method and apparatus according to the present invention, and FIG.
The figures are a front view showing the state in which the jet nozzle of the water jet cutting device is installed, and Figures 3 and 4 are
The figures are diagrams for explaining a conventional water jet cutting device, and FIG. 5 is a diagram for explaining a water jet cutting method according to the present invention. DESCRIPTION OF SYMBOLS 1... Machine frame, 3... Operating arm rod, 4... Nozzle socket member, 7... Motor, 9... Hanging member, 10...
...Guide rail, 11...Feed screw rod, 12...Slide member, 14...Worm gear, 16...Worm wheel, 17...Injection nozzle body, 20...High pressure hose.

Claims (1)

[Claims] 1. A nozzle socket member is attached to the free end of an operating arm provided on the machine frame so that it can be raised and lowered, and a hanging member is provided so as to be rotatable around the axis of the nozzle socket member, and the hanging member is A slider member is attached to the lower part so as to be movable in the horizontal direction, a bracket is attached to the slider member so as to be rotatable around a horizontal axis perpendicular to the moving direction of the slider member, and a bracket is attached to the slider member so as to be rotatable about the horizontal axis. A water jet cutting device characterized in that an injection nozzle body is mounted rotatably around orthogonal axes, and the jet flow supply hole of the nozzle socket member and the injection nozzle body are connected by a high-pressure hose.