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Specification L Title of Invention
Cutting recorder
Detailed Description of the Invention The present invention relates to an apparatus for recording
audio and video signals on a disc made of hard plastic, aluminum or copper, etc. 81 ". The
present invention provides a cutting and recording apparatus capable of recording in the same
time as the actual time of 1111. Conventionally, voice and '9. @ Signal, Piezoelectric? f1
'Mechanical change and summoning: (There are many devices for cutting and recording on a
disc. However, if it is intended to perform real-time j recording with ? ? ?, then the dimensions
of the pressure ? body should be reduced and that: ? lower order 1 ?p frequency V than the
signal frequency band In order to increase the size ? of the pressure rod, it is necessary to
increase the frequency of the low frequency band ? ? in the frequency band ?, instead of
firing the low frequency) in the frequency band by the speed increasing circuit etc. One of the
methods is to make the machine conversion ratio constant. This is because there is no significant
change in the pressure: 1's body vigilance tJlj machine conversion rate in the range lower than
the lowest order zs frequency, and becomes larger as the common frequency formula 'l
approaches It depends. Of the two methods described above, the first method is: 9) Treatment
with an exposed device, but processing is carried out due to reduction in size of the pressure
element or formation of ? However, it is difficult to mass-produce it in the south, and the effect
of the calorie degrades the performance of the piezoelectric body, and the signal recorded on the
disk becomes small. Also, the second one can solve the drawback of the first method because the
pressure is one size, and the husband is large. A braking device for suppressing the resonance of
the feedback circuit and the piezoelectric body is required, and there is a disadvantage that the
device becomes complicated. As a compromise between these two methods, there is also a
method of converting the frequency band of the signal to the lower side and cutting record in a
time longer than the reproduction time, but this method also takes time for recording and can
not record while monitoring. There are disadvantages such as the complexity of the entire
system. The present invention has been made in view of the various problems described above,
and adopts a piezoelectric body having a simple shape and a shape having the same size and
capable of increasing the resonance frequency, and extends mechanical vibration by a horn-like
cutting needle. It is an object of the present invention to provide a cutting recording device
capable of cutting signals on a disk in real time. Hereinafter, a first embodiment of the present
invention will be described based on the drawings. In the schematic configuration diagram of the
cutting and recording apparatus of FIG. 1, (1) is a piezoelectric member constituting an ?-L
pneumatic mechanical converter, and six pairs of opposing side surfaces (2a) and (2b) serving as
main vibration surfaces thereof. An electrode is formed on the), and five air terminals (3 m) (3 b)
are taken out from the cherry blossoms pole.
i4) is a piezoelectric body (a hand of bonding, etc. to one principal eye movement of 11 (2); a
diamond cutting needle directly fixed by a cylinder, (6) is a pressure-A body (base supporting 11)
In the part, the other main vibration surface (2b) of pressure i = 1 is fixed. (6) is a support arm to
which the base portion (6) is attached, and (7) is a disk to be cut. When an air signal is applied to
the electric terminals (3m) and (3b), the piezoelectric material fil performs mechanical vibration
in the -C direction according to jil and h'a ((4). Here, in order to record the signal in real time in 5
[seconds, in the solid wave number range of the signal, it is possible to use a piezoelectric book
('11' It is desirable that it is a saw tail whether it is H machine variable f ratio. For that purpose, it
is necessary to make the above-mentioned lowest frequency of L L sufficiently higher than the
maximum frequency of 1H. Therefore, when the signal frequency is high, the pressure and the
size of the T-body must be reduced, which causes the above-mentioned problems. Therefore, the
present invention is intended to eliminate the 71M point in the above by using the shape with
the largest dimension among the 1 и 1 base frequency in consideration of processability and mass
productivity. is there. As shown in Fig. 1 as a vibration mode that must be focused on the sound
of the body 1? There are Iyi direction vibration and expansion vibration. Now, considering Fig. 2
(the pressure of a rectangular solid having a frame size of ml [% J11, there are modes 1 to 5
shown in Fig. 2 (bl shown in FIG. The change of the frequency constant (resonant frequency per
unit length) with respect to L is shown in FIG. 2 (cl shown in cl). ???????? T is the ridge,
length and thickness of the piezoelectric body (1), respectively. As apparent from FIG. 2 jcl, mode
1 and mode 2 can not be excited and mode 3 is the lowest order mode of the spread vibration in
the vicinity of% W / L = 1, and the same size has the lowest order The resonance frequency is
highest near W / L == 1. Therefore, at the same frequency, the largest dimension can be selected
around W / L = 1. By the way, when the piezoelectric body is processed into an arbitrary shape, it
is difficult to avoid the deterioration of the honesty in the part of a certain depth from the
processing surface determined by the processing method and the pressing material, etc. It is
shown in Fig.3. Thirty-seventh (al (bl (8 m) and (8 b) indicate piezoelectric bodies before and
after processing, and (9 m) and (9 b) indicate processed and cut surfaces of piezoelectric two, e
(1 oa) and (1 ob) indicate respectively) FIG. 7 is a diagram illustrating the magnitude of pressure
back and forth constant d. It can be seen from FIG. 3 [bl that the piezoelectric r number d of the
crucible 1S having a constant depth is deteriorated from the processing area.
The displacement of the Pj / + pressure body with one opening printed is proportional to the
pressure constant d, so that even if the same electric field is applied, the '? position becomes
smaller near the processing surface. Therefore, the first and second cutting needles (4) must be
attached to 1'F by processing, where there is no deterioration in electrical conductivity. However,
as described above, by increasing the -4 and length of the main movement (2a) of the
piezoelectric iF = fll, the jj (+ the face of the part not affected by the king, the eyebrow becomes
large, and We wait for a practical place where the mechanical vibration transmitted to 4) can be
prevented from being affected by processing shadows. On the other hand, square, cedar board is
its thickness T; no bow t ?no darkness is the lowest following 7! Ma is an eighty-one! ?????
???? T is large N8. : The frequency constant Ns in the ? direction ?: 6P satisfying the
frequency constant of the spread ?, the lowest order resonance becomes longitudinal vibration.
In the present invention, since the longitudinal vibration is used, each size of the piezoelectric
body is determined so as to satisfy the following (2) EndPage: 2 equation according to the
resonance frequency nf of the desired longitudinal vibration. Now, assuming that the maximum
frequency of the signal is 5 (MHss), the lowest resonance frequency may be selected to about
(Mag), for example, N @@ = 400 [me KHg], N5 = 1700 (ms KHg). For example, (from equation 11)
Each dimension of the piezoelectric body in the longitudinal vibration mode in which the lowest
resonance frequency is 10 (MHz) can be determined from the equations [31, +21], and the
solution is shown in FIG. 4 * 'J4> I In the above, if the thickness T is 119 ?m, the length and
width are 132 ?m. Furthermore, the four-machine vibration of the piezoelectric body [11] is
transmitted to the cutting needle (4) through the main oil surface (2 ?). Cutting needle + 41? It
has been confirmed that, if the cross section is shaped so as to decrease continuously as it goes
forward, that is, it is possible to magnify the blur 1 mechanical vibration to such a shape that the
mechanical impedance changes continuously. In general, one having a shape that satisfies the
above conditions is called "on the horn", and oil tightness is used under resonance conditions to
expand the vibration and vibration. However, if the cutting needle 14) is made into a horn shape,
a certain expansion is performed in a frequency band sufficiently lower than the tc vibration
condition, but the number of used cycles # increases to the resonance frequency. I understand.
Therefore, it is necessary to use a frequency band lower than the resonance condition of the
horn-like cutting needle (4) in order to obtain stable expansion of the machine Rj'h horn of the
pressure member (1). Assuming that the wave number of the vibration propagating through the
cutting needle 4) is R and the length of the cutting needle 4 is t, the resonance condition is given
by the following equation 14).
Note: The square root of the ratio of the light leakage area to the wedge surface (4b) of the
cutting needle (4). The fifth {circle around (1)} (b) has a pressure of 119 .mu.m at the main
vibration surface (2-) O- of the square described in 1). Body (11 is used as an electromechanical
variation device, and in the isosceles triangle Z + '$ + 1 (411) shown in the fifth evil (1), a pair of
oblique sides ? is 60 ?m, K side 80 80 ?m, height b is The enlargement factor of the vibration
obtained when using a diamond pyramid-shaped cutting needle (4) made of 801 Im diamond is
shown. What is its vibrational magnification rate? Disc cutting 111IIII! Is the ratio of the depth of
the cut recording signal of the disk to the pressure and the displacement of the main vibration
surface (2-) 7 of the current collector when the% effective K is about 4 ?m and the effective K is
about 100. The fifth r ship 1 (from bl, the magnification is stable at 12 to 15 where the value of
R1 is low, and as it becomes higher, the magnification increases due to the influence of
resonance and the magnification changes significantly due to the change in R1 I know what to
do. Fig. 5 (Ml cutting needle (4) using a cutting needle (4), when the signal of around 5 MHz was
cut and recorded on the disk, the enlargement ratio of & period was 120 to 130% C :. According
to the cutting and recording apparatus of the present invention, the following effects can be
obtained as is apparent from the above description. (1) By adopting a prismatic piezoelectric
material whose main vibration surface is square, large dimensions can be obtained at the same
resonance frequency and the shape is simple, so that "processing becomes easy and it is highly
productive. The main vibration surface is enlarged by the pressure c and the removal d'l of the
body, and it is possible to avoid that the deterioration of the piezoelectricity due to processing
adversely affects the amplitude of the mechanical vibration. (3) By using a cutting needle having
a shape in which the mechanical impedance is continuously reduced in a frequency band
sufficiently lower than the resonance condition, a stable ? 8: ?,: pjj expansion is obtained. A
large signal groove can be recorded on the disc. (4) The structure is a face.
t Brief Description of the Drawings FIG. 1 is a schematic view of a cutting and recording
apparatus 11 which is a ll ? ? 71 ? ? ? ? ? ? 71 71 71 71 71 ? ? ((((((((((( Figure 1 is a
diagram of the relationship between the mode and the number of frequency losses (?1 clear
figure), (mlj, l Piezoelectric body и и), + bl is a diagram showing the selected J mode, fat is the
pressure side A graph showing the rh of the ratio and ? tJ, и ?31: 4ta + tb + each 7 to 7 ft of
pressure ? before and after the inflection 9 и и ?, Fig. 4 shows a square cross section? In the
target pressure body, the lower order Ti?J collusion is vertical vibration and its frequency is 10
(MH! ], And the size of each side is given 4 and ? 51 1 is a graph showing the frequency
dependence of the magnification of vibration. (11 и и и pressure 'и i body, (2 m) (2 b) = main
vibration! Ri, (3a) (3b> иии, electrical terminal, 14) иии 1 sword 1111 needle, (41) и и и molten surface,
16) и и и base m, + s + и и и 1 ?arm, (71... Disc EndPage: 3 FIG. 4 ? [? FIG. 5 (jL) [to) EndPage: ?
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