JPH05185292A - Press apparatus - Google Patents

Abstract

PURPOSE:To enable working in the wide range with an optional shaped press in ultra high speed without changing a punch and a die and work while detecting and deciding the working condition in high precision at the time of executing pressing, such as punching, squeezing, bending. CONSTITUTION:Plural cassette type press units 41, 42, 43 are assembled between a head 1 and a supporting table 3 forming a press gap. In each press unit, a die 41b is supported at the lower part of a holder 41a and the punch 31c is set at the upper part of the holder. A magnetosticting material 41f providing a stripper 41d and a pressurizing spring 41e of the stripper and pressurize-driving the punch 41c mainly uses Tbx Dyy Fez supermagnetostrictive material. A coil 41g acting magnetic field to the magnetostrictive material is provided. In the other press units 42, 43 have such constitution as the constitution of the unit 41 and are arranged so as to easily be changed as the cassette and inserted and set between the upper and the lower surfaces formed by the head 1 and the supporting table 3 in the press apparatus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device for punching, drawing, bending and the like.

[0002]

2. Description of the Related Art In a conventional hydraulic press or the like, the maximum number of press repetitions is about 10 to 20 Hz, which is inefficient in progressive press working, and it is impossible to arbitrarily form a wide range of shapes. Further, there are drawbacks such that burrs are generated in punching, strain deformation is caused, and highly accurate pressing cannot be performed. Further, in the conventional press, the operation of the machine had to be stopped to replace the punch and the die, which was an inefficient defect.

[0003]

In view of the above-mentioned drawbacks of the prior art, the present invention is capable of ultra-high-speed pressing, capable of processing a wide range of presses of any shape without exchanging punches and dies, and detecting the processing state. It aims at improving so that it can be processed with high precision while performing.

[0004]

[Means for Solving the Problems] A plurality of independent press units which are divided into press gaps are incorporated, a giant magnetostrictive material is provided for driving each unit, and a controller for selectively driving the giant magnetostrictive material of each unit is provided. It is characterized by The press units are characterized in that they are distributed in the X and Y plane directions of the press gap. Further, the invention is characterized in that a detection device for detecting the driving energy of the giant magnetostrictive material of the press unit to determine the processing state is provided.

[0005]

According to the present invention, as described above, a plurality of independent press units are incorporated in the press gap and selectively driven, so that a press having an arbitrary shape can be processed in a wide range. By arranging the press units in the X and Y plane directions of the gap, a planar press can be processed arbitrarily. Further, since a giant magnetostrictive material is provided to drive the press unit, press control can be performed at high speed up to about 1 kHz, and thus the speed can be arbitrarily controlled to an optimum frequency over a wide range of about 1 to 1000 Hz. Further, by detecting the driving energy of the giant magnetostrictive material, the processing state can be judged very easily, and the driving control can always be optimally controlled.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment of the drawings. In FIG. 1, reference numeral 1 is a head that forms the upper surface of the press gap and is driven and controlled by a motor 2. A support base 3 forms a lower surface, and a plurality of press units 41, 42, 43 formed into a cassette are assembled and set between the upper surface and the lower surface. For details of each press unit, as shown in FIG. 2, a die 41b is supported on a lower portion of a holder 41a, and a punch 41c is set on an upper portion of the holder. 41d is a stripper,
41e is a stripper pressure spring, 41f is a punch 41c
Is a magnetostrictive material that is driven under pressure, and is mainly Tb _x Dy _y Fe _z
A system giant magnetostrictive material is used. Reference numeral 41g is a coil that applies a magnetic field to the magnetostrictive material. The other press units 42 and 43 also have the same configuration as the unit 41 described above, are provided as a cassette for easy replacement, and are inserted and set between the upper and lower surfaces formed by the head 1 and the support base 3 of the pressing device. .. Built-in replacement is easy and can be replaced automatically when the punch is worn out. Reference numeral 5 is a material to be punched, which is supplied from a roll 61, is wound and moved on the other roll 62, 71 is a brake roller that exerts tension, and 72 is a take-up drive roller. To be done. Reference numerals 81 and 82 denote motors that drive the rollers 71 and 72, respectively, and reference numeral 9 denotes an NC controller that controls the motors 81 and 82 and controls the drive of the press units 41, 42, and 43.

The press units 41, 42, 43 are made of material 5
By inserting and setting a large number of the punches in the moving direction of No. 5 and selectively driving the punches of each unit in the moving direction of the material 5 by the NC control device 9, it is possible to perform progressive feeding. In the punch press, when the coil 41g of the selected unit is excited, the punch 41c is driven by the expansion and contraction of the magnetostrictive material 41f to press punch the material 5, but the acceleration control of the magnetostrictive material can be controlled at high speed up to about 500 to 1000 Hz. It is possible to perform precise punching without burr generation. or,
Can be processed with low power and low noise. As for the punching processing state of the material being processed, the processing state of each unit can be directly detected and determined by detecting the current characteristics and voltage-current characteristics when a drive pulse is applied to the magnetic field coil 41g, and the processed portion can be accurately processed. The accuracy of the magnetostrictive material can be checked, and by controlling the power or waveform of the drive pulse based on the detection, it is possible to control the pressurizing characteristic of the magnetostrictive material for precision machining.

Usually, about 10 to 100 press units are built in. For example, for processing the lead frame of the layout of FIG. 3, 16 pins, 18 pins, 32 pins ... 110
Any number of selective punches such as pins can be punched. Tb _0.3 Dy _0.7 Fe _1.9 was used for the magnetostrictive material of the press unit.
Using a PPM machine having an amplitude of 500-10000e and a 1500 PPM machine, a rod shape having a thickness of 15 mmφ and a length of 750 mm was constructed, and 10 kg of back pressure by a spring was constantly applied to this to perform vibration pressing. At the time of punching, 1 / of the plate pressure is first applied with the vibration press.
When driven by 3-1 / 4 and punched with the main stroke, the power of the Ti material press test is about 30-
It decreased by about 40%. Further, even when processing a brittle material such as a 6% Si material, it was possible to reduce the number of cracks by vibration punching. By punching by applying the force due to the vibration acceleration of the magnetostrictive material in this way, it is possible to perform punching with less residual strain without difficulty because the force for one stroke is small. The precision is improved, and fine punching can be performed.

FIG. 4 shows a modification of the structure of the press unit.
The same reference numerals as those in FIG. 2 indicate the same parts. The upper part of the punch 41c is adhered to the lower end of the magnetostrictive material 41f, and the punch 41c is vibratably supported by a leaf spring 41h. This allows the punch to vibrate magnetostrictively at high frequency.

FIG. 5 shows a material for press punching while detecting the forward feed position of the material 5. The same reference numerals as those in FIG. 1 indicate the same parts. Brake roller 71 of material tape 5
Also, encoders 11 and 12 for detecting rotation of the pinch roller pressed against the drive roller 72 are provided, and signals from the encoders 11 and 12 are input to the position detector 13 for comparison calculation. By accumulating the detection pulses of the encoders 11 and 12, the displacement distance of the material tape 5 and the error from the difference between the encoders 11 and 12 are detected, and these detection signals are input to the NC control device 9 for each press. The press operation control of the units 41, 42, 43 ... As described above, depending on the feeding position of the material tape 5, the unit 4
The punching precision is extremely improved by controlling the drive of 1, 42, 43, ... And the optional irregular shape machining can be performed with extremely high precision by selectively driving the press unit.

FIG. 6 shows an embodiment in which a press device is vertically arranged vertically. A plurality of press units are vertically installed, and the material tape 5 is moved in the vertical direction to perform a sequential feed press. is there. According to this, the floor area occupied by the press device is small and space is saved, and there is an effect that the press of energy saving, low vibration, and low noise can be performed.

The embodiment of the punching press has been described above. However, even in bending and drawing presses, the vibration energy of the magnetostrictive material acts and the press advances with a small displacement, so that there is little buckling and the shape accuracy is high. Can be molded extremely high.
Also in this case, the press shape can be formed over an arbitrary and wide range by selectively driving the unit. or,
The selection drive of the magnetostrictive material is not limited to the NC control device, and manual selection or arbitrary automatic selection control can be performed.

[0013]

As described above, according to the present invention, a plurality of independent press units are incorporated in the press gap and the press units are incorporated into the NC unit.
Since it is designed to be selectively driven by a control device or the like, it can be selected by an NC program or manually.
By other means, any shape press can be processed in a wide range. By incorporating the press units in a distributed manner in the X and Y plane directions of the press gap, it is possible to perform a combined press not only in the moving direction of the material but also in any direction of the plane, which facilitates a wide range of shape processing. Also, the force applied to the members such as the die is divided and averaged, which enables stable processing. Further, since a giant magnetostrictive material is provided to drive the press unit, press control can be performed at a high speed up to about 1 kHz, and a force with vibration acceleration can be applied to perform a highly efficient precision press. Vibration speed is 1 to 1000
Since it is possible to control over a very wide range of Hz, speed control is performed according to the material of the press material, plate thickness, and shape, optimal pressing is performed to reduce cracks and residual strain, and precision pressing is performed with high precision and fineness. It becomes easy to process. Further, even if a press load of the main stroke is applied to the press head, the power can be reduced by vibrating press using a giant magnetostrictive material, and there is an effect that press working with low vibration and low noise can be efficiently performed. Further, the processing state can be judged very easily by detecting the driving energy of the giant magnetostrictive material during processing, and the drive control can be easily and optimally controlled thereby.

[0014]

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is an enlarged detailed view of a main part of FIG.

FIG. 3 is a diagram showing an example of a blank layout of the present invention.

FIG. 4 is an enlarged detailed view of an essential part of another embodiment of the present invention.

FIG. 5 is a diagram of another embodiment of the present invention.

FIG. 6 is a diagram showing another embodiment of the present invention.

[Explanation of symbols]

 1 head 2 drive motor 3 support 41, 42, 43 press unit 41a holder 41b die 41c punch 41d stripper 41e spring 41f giant magnetostrictive material 41g coil 5 material 71 brake 72 drive roller 9 NC controller

Claims (3)

[Claims] 1. In a press device for punching, drawing, bending, etc., a plurality of independent press units are incorporated into a press gap, and a giant magnetostrictive material is provided for driving each unit, and a giant magnetostriction of each unit is provided. A press device comprising a control device for selectively driving a material. 2. The press unit is provided with a press gap X,
The press device according to claim 1, wherein the press devices are distributed in the Y plane direction. 3. The press device according to claim 1, further comprising a detection device for detecting a driving energy of a magnetostrictive material of the press unit to determine a processing state.