JPH0529837Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a processing device for plates, etc. made of resin and fiber-reinforced composite materials with resin as a matrix.
In particular, vibration finishing punching is a process that uses vibration energy to apply vibrations to each pair of dies or punches so as to convert the vibration energy into thermal energy, and the generated heat thermally softens the workpiece and performs processing such as drilling and cutting. Regarding machines.

(Prior Art) Such a conventional vibrating finish cutting machine is disclosed in, for example, Japanese Utility Model Application No. 58-102098 or Japanese Utility Model Application No. 58-117400. The devices disclosed in these documents form an upper frame and a lower frame integrally with the base on a base, and usually two columns are erected on the base and the upper frame and lower frame are fixed to the columns. Because of the gate-like shape, the upper die was lifted by raising and lowering a die clamp hydraulic cylinder attached to the upper frame.

(Problems that the invention attempts to resolve) However, in such conventional devices, the base, the upper frame, and the lower frame are integrally formed by the pillars, so the perpendicularity between the pillars and the upper frame or the lower frame, Alternatively, high-precision machining is required for the parallelism between the upper and lower frames, and if there is a slight machining error, there is a risk that the center of the die or punch may be misaligned and the die or punch may be damaged. Further, the upper frame and the lower frame are fixed to a support and the distance between them is limited in advance, and as the thickness and size of the workpiece increases, a separate device is required, resulting in lack of versatility as a device. Furthermore, many parts such as cylinders and guide pins for lifting the upper die are required, making it complicated and expensive. The purpose of the present invention is to eliminate the drawbacks of such conventional devices.
A lightweight, compact, simple and inexpensive vibrating finish that does not require high-precision machining for the perpendicularity of the upper and lower frames and the pillars, or the parallelism between the upper and lower frames, and allows the spacing between the upper and lower frames to be freely set. Our goal is to provide a punching machine.

(Means for Solving the Problems) Therefore, the present invention solves the above-mentioned problems by providing a vibrating finish cutting machine as described in the claims of the utility model registration.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.The vibrating finish cutting machine according to the present invention shown in a partially sectional view in FIG. a lower frame 3a formed into a box shape;
It includes an upper frame 3b supported via a pair of die clamp hydraulic cylinders 11. A servo cylinder 4a and a die holder 5 are mounted on the lower frame 3a.
are fixed at the lower and upper sides, and the servo cylinder 4
The rod 6a of a is drivingly connected to the lower punch 9a through a hole 7a passing through the lower frame 3a. The die holder 5 is C-shaped as shown in FIG. 2, and has a lower portion 5a of the die holder 5.
A fixed lower die 8a is placed on the upper portion 5b.
An upper die 8b, which is movable up and down, is inserted coaxially into the upper die 8b. A lower punch 9a is slidably fitted into the lower die 8a, and the rod 6a is held by a spring 10.
The ends are always biased downward so that they touch.
The lower end of the hydraulic cylinder 11 is fixed to the lower frame 3a, and its rod 22 extends upward through a hole 21 provided in the lower frame 3a, and the upper end of the rod 22 is fixed to the upper frame 3b with a nut 23. However, due to space constraints, one end of the rod 22 is attached to the lower frame 3a, and the other end is attached to the upper frame 3b.
It may be fixed to A servo cylinder 4b is fixed to the upper frame 3b coaxially with the servo cylinder 4a of the lower frame 3a.
A bracket 14 is attached to the lower surface of b, and the collar 15 of the upper die 8b is fitted into the T groove formed by the upper frame 3b and the bracket 14, and the upper frame 3b
When the upper die 8b is moved up and down by the cylinder 11, the upper die 8b is also moved up and down. The lower end of the rod 6b of the servo cylinder 4b passes through the hole 7b of the upper frame 3b and comes into contact with an upper punch 9b which is slidably fitted into the upper die 8b and is urged upward by a spring 15. The servo cylinders 4a and 4b have servo valves 16 and 16', respectively, and a servo amplifier 17,
The servo cylinders 4a and 4b are connected to the controller 18 via the cylinder 17', and detectors 19a and 19b for position detection are attached to the servo cylinders 4a and 4b, respectively. Thus, the servo cylinders 4a, 4b are connected to the position detector 19.
a, 19b, servo valves 16, 16', servo amplifiers 17, 17', and controller 18. The movements of the servo cylinders 4a and 4b can be synchronized as shown in FIG. 3, and the clamping force and excitation force of the upper and lower punches 9a and 9b can also be controlled by controlling the hydraulic pressure in the servo cylinders. be able to. In the embodiment, each servo cylinder 4a, 4b is drivingly connected to the upper and lower punches 9a, 9b, but the upper and lower punches may be fixed and the upper and lower dies may be driven by the servo cylinders 4a, 4b.

Next, the operation will be explained. When drilling a hole with this device, first the workpiece 20 is placed on the lower die 8a fixed on the die holder 5.
Next, pressurized oil is sent to the die clamp hydraulic cylinder 11, and the rod 22 is lowered.
The upper frame 3b is fastened to the tip of the upper frame 3b with a nut 23.
is lowered, the upper die 8b is lowered, and the workpiece 20 is held between the upper die 8b and the lower die 8a. At this time, by controlling the hydraulic pressure supplied to the die clamping hydraulic cylinder 11, a predetermined clamping force can be generated. Additionally, the clamping position of the upper die 8b changes depending on the thickness of the workpiece 20, but this positioning is determined by inserting the pilot check valve 24 in the hydraulic circuit diagram of FIG. 4 to prevent the die clamp from loosening during vibration. It is maintained by being there. Next, the servo cylinders 4a and 4b are operated to clamp the workpiece 20 with the upper punch 9b and lower punch 9a as shown in FIG. After this, as shown in Fig. 3, the upper and lower servo cylinders 4
a and 4b are vibrated for T ₁ hour, and then raised while continuing the vibration until the lower punch 9a penetrates the workpiece 20. At this time, needless to say, the upper punch 9b rises in synchronization with the lower punch 9a.

When it has finished rising, the servo cylinders 4a, 4
b is stopped from vibrating, and at the same time, the upper die 8b is moved upward by the hydraulic cylinder 10. Next, the servo cylinder 4b is moved upward to remove the punched scraps, and then the servo cylinder 4a is moved downward to remove the lower punch 9a from the workpiece, and then the workpiece 2 is removed.
0 to the next drilling position to complete the machining.

(Effects of the invention) As explained above, according to the invention, the hydraulic cylinder for the die clamp was replaced with the conventional support, so
By adjusting the attachment between both ends of the hydraulic cylinder and the upper and lower frames, the perpendicularity between the upper frame or the lower frame and the column, or the parallelism between the upper and lower frames can be maintained with high accuracy very easily. Extra machining is no longer required, and the die or punch is no longer misaligned or damaged due to such poor perpendicularity or parallelism. In addition, the distance between the upper frame and lower frame can be adjusted freely by expanding and contracting the hydraulic cylinder rod.
It has become a versatile device that can accommodate a variety of workpiece thicknesses and sizes. Furthermore, since a cylinder for lifting the upper die is no longer required, the device is lightweight, compact, simple, and inexpensive.

[Brief explanation of the drawing]

Fig. 1 is an elevational front view showing a part of a vibrating finish cutting machine which is an embodiment of the present invention in cross section, and Fig. 2 is a side partial sectional view seen from the left side of Fig. 1, showing the side shape of the die holder. 3 is a graph showing the vibration applied to the servo cylinder of FIG. 1 and the punching feed motion, and FIG. 4 is a hydraulic circuit diagram of the apparatus of FIG. 1. 3a...Lower frame, 3b...Upper frame, 4
b... Servo cylinder, 6b... Rod, 8b...
...Upper die, 8a...Lower die, 9a...Lower punch,
9b...Top punch, 11...Cylinder, 20...
Workpiece.

Claims (1)

[Scope of utility model registration request] A workpiece is held between an upper die and a lower die provided on the same axis, and an upper punch and a lower punch each slidably fitted to each die, and either one set of each punch or each die is vibrated synchronously. In a vibrating finish punching machine that applies punching feed, the lower frame supports the lower die and the lower punch, and the upper frame is supported via a pair of cylinders each having one end supported by the lower frame and the other end supported by the upper frame. Vibration finishing characterized in that it includes a frame, the upper die or upper punch attached to the upper frame, and the upper punch or die drivingly connected to a rod of a servo cylinder fixed to the upper frame. Pulling machine.