TW522378B - Method of correcting rotational unbalance of rotating mechanism and correcting device of the same - Google Patents

Abstract

A method of correcting rotational unbalance of a rotating mechanism in, e.g. a hard-disc-driving apparatus, and a rotational unbalance correcting device. A disc-shaped plate has plural protrusions arranged equiangularly on the outer wall of the plate, and the protrusions radiate from the outer wall. The plate is mounted fixedly and coaxially to a rotating mechanism, i.e. a hub including hard discs having been fixed thereto. At least one of the protrusions is bent inward of the plate responsive to rotational unbalance of the rotating mechanism thereby achieving balance. This simple structure can correct unbalance of the rotating mechanism by simple work and free from contamination.

Description

522378 A7 ------------- --__ B7__ V. Description of the invention (1) ▲ This invention relates to the adjustment of the assembly of the motor, or the rotation axis of the motor, if it is installed in the spindle motor of a hard disk device. Method and device for correcting the rotation balance of the rotation unbalanced rotating body generated when the magnetic disk is installed. Fig. 8 is a perspective view of a more general structure in a conventional hard disk device. The disk core 321 rotated by the spindle motor is laminated with a plurality of magnetic disks 3 11 or at regular intervals. The magnetic head 319 is movably disposed on both sides or on one side of the magnetic disk 311. The magnetic head 319 is installed at the end of the rotary adjuster. The rotation adjuster 318 is provided with a coil 32o constituting a voice coil motor. When the spindle motor rotates, the magnetic head 319 floats slightly from the surface of the magnetic disk 311 through the air flow generated between the surface of the magnetic disk 311 and the magnetic head 319. The magnetic head 3 19 is rotated by the driving force of the voice coil motor with the rotation shaft 322 as the center ′ and moves on the magnetic disk 311 in the radial direction to read and write data. The floating amount of the magnetic head 319 is about several tens to several hundreds of faces. The entry of the dust from the head of the magnetic head 319 and the disk 是 is the cause of damage to the magnetic head 3 19 and the magnetic disk 3 11. For this reason, the hard disk device is assembled in a clean room and sealed with a cover 317 after assembly. Due to the influence of the dimensional error and assembly error of each component of this type of hard disk device, the center of gravity of the rotating center axis after assembly is not the same as that of the rotating part including the magnetic disk 3ΐ, resulting in unbalanced rotation. The disadvantages caused by this unbalanced rotation may reduce the readability of the magnetic head on the disk surface data track and increase the noise due to vibration. In addition, when the hard disk device is mounted inside the computer as an external memory device, it may cause damage to other computers. The device has an adverse effect. Figure 9 shows the conventional example of a gyration balance correction device for a rotating body. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) " ----- (Please (Please read the notes on the back before filling this page) Install ---------- Order --------- · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 522378 A7 V. Invention Description ( 2) Side sectional view of the hard disk drive. First, the basic structure of a spindle motor mounted on a hard disk drive will be described using this FIG. 9. This spindle motor is a fixed shaft type. A rotation shaft 304, which is a center of rotation of the motor, is fixed to the base 301. Inside the inner wheel portion of the bearing 305 • The wall 3051 is fitted into the rotating shaft 304, and the outer wall 3052 of the outer wheel portion of the bearing 305 is fitted into the inner wall of the approximately cylindrical disc core 306. If so, the disc center 306 can be rotated around the rotation axis 3 04 #, and the disc center 306 itself becomes the rotation axis of the spindle motor. An inner wall 3063 below the disc core 306 is embedded with an outer wall 3071 of a ring-shaped rear deflection coil 307, and an inner wall 3072 of the rear deflection coil 3007 is fixed with an outer wall 3081 of a ring-shaped rotating magnet 308. In addition, the base portion 301, the stator shaft center%] is fixed coaxially with the rotation shaft 304. The stator shaft center 302 faces the inner wall of the magnet 308 through an annular gap. The stator shaft center 300 is wound with a coil 300. By the current flowing through the coil 303, and the magnetic boundary action formed by the magnet 308, the deflection coil%? And the stator shaft 302, the motor obtains a turning force. In addition, without the deflection coil 307, a ring-shaped rotating magnet is directly fixed on the inner wall 3063 of the dish core 306, and the structure of the stone 3G8 is also widely used. In this case, the disc core 3G6 also has the function of a rear deflection coil, and it has the function of a spindle motor. The rotating body part of the motor is ideally composed of the center of gravity on the center axis of rotation, but in reality due to the dimensional error and assembly error of each component, the center axis of rotation may not be consistent with the center of gravity. . Next, a conventional method for correcting the rotational imbalance of the spindle motor will be described with reference to FIG. 9. f First, assemble the rotating part of the spindle motor. In other words, the spin-on ---- order ---- I ---- line (please read the precautions on the back before filling this page)

II 522378 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (3) Rotating shaft 304 is rotatably installed with a disc core 306 equipped with a rotating magnet 307 and the like in advance. The unbalance of the rotating body is located in a plurality of adjustment holes 3061 formed in the disc center 306 in advance, and the unbalanced position is a 180-degree symmetrical position of the rotation center axis, or the adjustment hole 3061 existing at the near position. Or more insert weights. Thereafter, the rotation shaft 304 is fixed to the base portion 301. When using this method, a plurality of adjustment holes 3061 are formed at equal intervals on the concentric circle with the center axis of the rotation, which can correspond to the balance correction at any position. Missing code 309 ′ Prepare a variety of different weights, which can correspond to any amount of balance correction. As a method for fixing the weight 309, there are a method for fixing an adhesive, or the elastic deformation of the weight 309 is inserted into the adjustment hole 3061, which is generated between the elastic force of the weight 309 itself and the adjustment hole 3061 after insertion. The method of fixing friction. In addition, although the above-mentioned main spindle motor has been described with a fixed shaft type, as for the conventional method for correcting imbalance, the shaft rotary type can also be corrected by forming an adjustment hole in the turning portion in advance. Fig. 10 is a side cross-sectional view of a rotary balance correction device in which motor disks of other conventional examples are assembled and applied to a hard disk device. The spindle motor has the same configuration as the conventional example shown in FIG. The disk core 306 holds three magnetic disks 311 which are laminated at regular intervals with a disk spacer 312 interposed therebetween. The magnetic disk 3 11 is fastened by screwing the screw 314 into the screw hole 3064 via the pressure plate magnetic disk 313. For example, the magnetic disk 3 11 and the disk core 306, which is also the rotation axis of the spindle motor, can be fixed in a rotatable manner. (Please read the precautions on the back before filling this page) Binding ---- Order ------------ This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 6 522378 A7 B7 V. Description of the invention (4 Printed by Qi Yin and Hui Hui ^ -member 1-saving fee ^ 阼 ^

Next, the conventional method of correcting the rotational imbalance of the spindle motor will be explained using the _th. First, the assembly of the turning part of the spindle motor is performed. That is, a disk core 306 in which a rotating magnet 307 and the like are installed in advance is rotatably mounted on the rotating shaft, and then a magnetic disk 311 is installed in the disk core 306. Next, / then the unbalance of the revolving body including the revolving part of the magnetic disk is in a number of adjustment holes 3061 formed in the disc center 306 beforehand, and the 18Q degree symmetrical position of the unbalanced position is sandwiched between the revolving center axis. , Or one or more insertion weights of the adjusting hole in the near position. When using this method, the adjustment hole 3061 and the center axis of the rotation are concentric on the disc center 306. A plurality of holes are formed on the disc center 306 in advance, which can correspond to the balance correction at any position. The weight 309 is prepared with a variety of different weights, which can correspond to any amount of balance correction. As a method of fixing the weight 3009, there is a method of fixing an adhesive, or inserting the missing code 309 into the adjustment hole 3061, and the elastic force between the inserted weight 309 and the adjustment hole 3061 is used. The method of fixing the generated friction force, or a weight protruding portion 3 0 9 formed by a material having a very large elastic deformation ratio such as rubber, 3 0 9 elastic deformation insertion hole 3 〇6 i ′ on the magnetic plate The space between the disc 313 and the disc core 306 is interposed between the protruding portion 301 and the fixing method to prevent the weight 309 from falling off due to impact or the like. Fig. 11 is a plan view showing an important part of a swing balance correction device which is a conventional example applicable to a hard disk device. Use Figure 11 to explain the method of reducing the station code on a semi-straight line connecting the center of rotation axis 400 and the center of gravity 450 (unbalanced position) of the turning part, or the method of bringing the station: code position closer to the center of rotation. II (Please read the precautions on the back before filling out this page) ij!-Chinese paper standard (CNS) A4 (210 X 297 mm) is applicable for paper size 7 522378 A7 V. Description of invention (5) Section 11 In the figure, the rotation balance correction device includes a planar positioning hole 3103 that is fitted with the rotation shaft 316 and has a ring-shaped portion 310 in the center circle, and the ring-shaped portion 310 extends radially. A plurality of support portions; and a missing portion 3j formed at the front end of the branch portion 3102. This slewing balance correction device is rotatably fixed to the shaft 316 coaxially and integrally with the slewing center axis of the slewing part 3 丨 丨. In addition, the support portions are made of a heat-shrinkable material. After measuring the rotation unbalance of the entire rotation portion 311 including the rotation balance correction device, the support portion 3102 on the straight line connecting the rotation center axis 4⑼ and the unbalance position 450, or the nearby position is irradiated with laser heating to make it shrink. As a result, the weight 3101 is brought closer to the rotation center axis side. This operation is repeated until the imbalance reaches below a certain value, and the imbalance is corrected. In addition, there is also a method of correcting the imbalance by cutting the support portion 3 102 with a laser. At this time, the support portion 3102 does not need to be a heat-shrinkable material. However, each of the above-mentioned rotation balance correction devices has various There are the following problems. In the method of inserting the weight into the adjustment hole, in order to cope with the imbalance at any position, a plurality of holes must be formed in the center of the dish. For this reason, the mechanical rigidity of the disc core is reduced, and deformation of the disc core may occur, and even the deformation of the disc core may cause the disk to bend and undulate. In addition, in order to make the weight correspond to an imbalance of an arbitrary amount, a plurality of types must be prepared, which may lead to an increase in cost, trouble in selecting a weight, and adverse situations caused by mixing of different kinds of weights. In the method of fixing the weight, the problem of corrosion of the magnetic head and the disk may occur due to the gas generated by the adhesive of the fixed weight. Fresh — (21〇: ---- 1 ------- • equipment (please read the precautions on the back before filling out this page) Order --------- Consumption by the Intellectual Property Bureau of the Ministry of Economic Affairs Cooperative (printed 297 mm) 522378 A7 V. Description of the invention (6) In the method of inserting stone code to elastic deformation into the hole, it is necessary to transform the missing code into a certain shape for complex and precise operations such as holding, inserting, etc., not only Macro time is extended in production equipment and adjustments, and may be inserted by mistake. The following problems can be mentioned in the method of reducing the m of the baby code or connecting the material position to the heart side of the towel. In the rotary balance correction device, the support portion of the laser beam is made of a special material, which causes an increase in cost, and the shrinkage due to heat. In addition, with regard to the method of cutting the support portion, there is a possibility that dust or gas may be generated during cutting. The method and device for correcting the slewing balance of the slewing body of the present invention are the products of solving the above problems. The gyrobalance correction method of the present invention includes the following steps. The disc-shaped body of the plurality of protrusions extending radially at equal angular intervals on the outer peripheral portion and the center of rotation of the rotator ㈣㈣ @ 定 的 步骤; and according to the balance of the rotation of the rotator with the disk-shaped body In a balanced state, at least one of the plurality of protrusions is bent toward the inner side of the disc-shaped body to obtain a step of balancing the rotation of the turning body. The swing balance correction device of the present invention includes the following configuration. A disk-shaped body fixed coaxially with the center axis of rotation of the rotating body; and 'radially extending at equal angular intervals on the outer periphery of the disk-shaped body, each being independent and formed in a zigzag manner inside the disk-shaped body The majority of the protrusions. According to the method and device for correcting the rotation balance of the slewing body of the present invention as described above, during assembly, a disc-shaped body having protrusions is mounted on the slewing body, and its protrusions are bent inward so that it can correspond to an arbitrary amount. The size of the paper is applicable to China National Standard (CNS) A4 specification (210 X 297 mm M ---- l · --- tT --------- line (please read the precautions on the back first) (Fill in this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs) 22378, the invention description (the balance correction of the device. In addition, it is not compatible with the ancients, but it is the gate of pollution that is accompanied by the conventional adhesives and materials ^ The question 4 of life can be corrected by simple structure and operation. Figure 1 shows the side of the swing balance correction device of the rotary body in the first embodiment of the present invention when it is applied to the hard disk device. Sectional view. Fig. 2 is a perspective view showing a weight plate for balance correction used in this embodiment. Fig. 3 is a plan view of the weight plate for balance correction. Figs. 4A and 4B show the hard disk device. , Showing the protrusions and the magnets of the weight plate for balance correction in this embodiment Side cross-sectional view of the positional relationship of the head. Fig. 5 is a side cross-sectional view when the slewing balance correction device of the rotary body in the second embodiment of the present invention is applied to a hard disk device. Fig. 6 is a third embodiment of the present invention. A plan view of a station code board for balance correction of a slewing balance correction device used in a slewing body. FIG. 7A is a side cross-sectional view when a slewing balance sizing device of a slewing body is applied to a hard disk device in the fourth embodiment of the present invention. Fig. 7B is an enlarged view of a recess formed on the protruding portion of the missing code plate for balance correction used in this embodiment. Fig. 8 is a perspective view showing the general structure of a conventional hard disk device. The figure is a side cross-sectional view of the conventional example when the slewing balance correction device of a slewing body is finally applied to a hard disk device. Fig. 10 is another conventional example when the slewing balance correction device of a motor hard disk is finally applied to a hard disk device. Side cross-section view. This paper size friend + Guan Jia Standard (CNS) A4 specification (210 X 297 public love) 10 · install --------- order --------- line (please Read the note on the back? Matters before filling out this page) 522378

V. Description of the invention (8 # is a plan view of the main part of a rotary balance correction device suitable for a conventional example of a hard disk device. The embodiment of the Nirin invention is described below using drawings. (First embodiment) Figure 1 This is a side cross-sectional view when the slewing ㈣ compensation device of the rotator in the first embodiment of the present invention is applied to a hard disk device. Figure 2_ shows a perspective view of a weight plate for balance correction used in this embodiment. Fig. 3 is a plan view of the balance correction weight plate. Figs. 4A and 4B are side cross-sectional views showing the positional relationship between the protruding portion and the magnetic head of the silicon code plate for balance correction in the embodiment. In the figure, the rough structure of the spindle motor is the same as the known example shown in FIG. 10. The main points of the first embodiment that are different from the conventional examples are as described. In the first embodiment, the disc core 6 A platen disk 13 that presses and fixes the three disks 11 through two disk spacers is arranged on the platen. Further, the platen-shaped disk 13 is provided with a disk-shaped balance correction weight plate. 15, the weight plate 15 and the pressure plate magnetic disk 13 are fixed to the disk core 6 by the platen hard disk association screws 14. The weight plate 15 and the disc core 6 which is also the rotation axis of the spindle motor are fixed in a body and coaxially, and can rotatably constitute the periphery of the rotation axis 4. After the motor hard disk is assembled, the rotation of the assembly is measured. Ding 'handles on or near the semi-straight line connecting the center of rotation and the unbalanced position, and bends 1 or 1 of the protrusions 1 5 1 to make it plastically deformed and balanced.' 第 之 习 下 12- ------------ Farm ----- Γ --- Order --------- Line (Please read the precautions on the back before filling this page} This paper size applies China National Standard (CNS) A4 specification (210 x 297 mm) 11 522378 A7

V. Description of the invention (9) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs The following details the weight plate 15 using Figures 2 and 3. As shown in these two figures, the weight plate 15 is a disc-shaped body having a coupling hole 156 that rotatably couples the rotary shaft 4 in the center. The weight plate 15 has a plurality of projections 丨 5 丨 formed radially at equal angular intervals on its outer periphery. The three mounting holes 157 are holes for fixing the disc core 6 by screws 14. The two rotation direction position determination holes 155 are formed at symmetrical positions with the holes 156 interposed therebetween. The weight plate 15 is made of a general metal material, and can be manufactured only by processing a plate, and can be mass-produced in a short time to reduce costs. Next, a method for correcting the swing balance will be described. After assembling the disk core 6, the disk π 'disk spacer 12, the platen disk 13 and the rotating body including the weight plate 15, the rotational unbalance of the rotating body is measured. According to the measurement result, one or more protrusions 151 on or in the vicinity of the semi-straight line connected to the unbalanced position by the center axis of rotation on the weight plate 15 are bent to the inside, and the center of gravity of the protrusions 151 is approached to the center of rotation. Swing balance correction. Regarding the positioning of the weight plate 15 in the plane direction during assembly, since the engaging hole 156 is inserted into the rotary shaft 4 and is mounted coaxially with the motor hard disk assembly, the distance from the rotary central shaft to any protrusion 丨 5 丨The error of the balance correction amount caused by the difference is a small amount that can be ignored, so the protrusions at any position are twisted 11.5, and the balance correction amount can be said to be constant. In addition, regarding the position positioning of the missing plate 15 in the turning direction, in FIG. 3, a line point 250 connecting two position positioning holes 155 is used as a reference line point, and the angle formed by the reference line point and each protruding portion is determined. It is 2000, so there is no need to worry about the errors, defects, and twists caused by the wrong selection of the protrusions that should be zigzag during the balance correction. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) 12 AW ^ ---------- ^ -------- (Please read the precautions on the back before filling this page) 522378 A7 B7 V. Description of the invention (10 Poor twists and turns caused by the displacement of the fixture The balance plate 15 can be correctly corrected. The weight plate 15 is an axisymmetric structure, and there is no imbalance in the design. The more the protruding portion 151 of the missing plate 15 is away from the rotation center axis, that is, the more it is on the outer peripheral side The greater the amount of balance correction, the greater the mass of the protrusion 151, the greater the amount of balance correction, and the greater the amount of possible balance correction. Conversely, the closer the protrusion 151 is to the center axis of the rotation, that is, the smaller the amount of balance correction on the inside, The smaller the mass of the protrusion 151 is, the smaller the balance correction amount is. The distance between the center of rotation of the protrusion ι5ΐ and the mass of the protrusion 15 丨 is determined by the optimum value of the maximum imbalance and the imbalance specification in the design and assembly method. Figures 4A and 4B show this section. The positional relationship between the large rise σρ 1 5 1 of the balance correction weight plate 15 and the magnetic head 19 in the embodiment. If the gap between the magnetic disk 11 and the protruding portion 15 1 is restricted in size in the height direction, it protrudes in the height direction. As long as the portion 151 interferes with the magnetic head 19, as shown by the arrow in FIG. 48, the protruding portion 151 shortens the front end 153 of the protruding portion so that it does not contact the magnetic head 19 so that it faces the center axis side of the rotation. As shown in the figure, the gap between the front end 153 of the protruding portion and the magnetic disk can be increased, and all the protruding portions ΐ5ΐ must be twisted upward by a certain amount. If so, the weight plate 15 is generated by design and assembly methods for the specific implementation. The position and mass of the protruding portion 151 set by the maximum imbalance amount and the unbalanced specification amount have a degree of freedom in designing the mounting structure. In addition, although the spindle motor in the first embodiment is a shaft-fixed type, it may also be a shaft Back to Transformation Spindle (Second Embodiment)-------------- ^ ---------- ^ --------- ^ (Please read the (Please fill in this page again)

522378

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

Fig. 5 is a side cross-sectional view when the slewing balance correction device of the slewing body in the second embodiment of the present invention is applied to a hard disk device. In the rotation balance correction device of the first embodiment described above, if the zigzag positions of the protruding portions 151 are scattered, the correction amount is scattered, and a guaranteed balance correction amount cannot be obtained by design. However, when bending is usually performed, a clamp is added to determine the zigzag position. Λ In FIG. 5, the thickness of the root element 152 of the protrusion 151 is thinner than that of the front end μ), and the thickness of the root element 152 is the smallest in the protrusion 151, so that the bending rigidity of the root element 152 is the weakest. Therefore, without using a jig to increase the bending momentum at any position of the protruding portion 151, the meandering position of the root element 152 can be ensured, and a stable balance correction effect with less error can be obtained. In addition, the shape of the protrusion 151 is as shown on the right side of the rotation center axis in FIG. 5, and the thickness is reduced linearly from the front end of the protrusion 153 toward the root element 152, as shown on the left side of the rotation center axis in FIG. 5. The same effect can be obtained by forming the concave portion 15 4. (Third Embodiment) Fig. 6 is a plan view of a balance plate for a balance correction used in a rotation balance correction device for a rotator in a third embodiment of the present invention. In FIG. 6, in order to reduce the dispersion of the zigzag position of the protruding portion 1 $ 1 of the balance correction missing plate 丨 5, the width of the root element 152 of the protruding portion 151 is narrower than that of the front end 153, and the protruding portion 151 is narrower. In the middle, the amplitude of the root element 152 becomes the narrowest, and the bending rigidity of the root element 52 becomes the weakest. Therefore, without using a clamp to increase the bending momentum at any position of the protruding portion 151, the tortuous position of the root element 152 can be ensured, and a stable and stable level can be obtained.

• n ϋ II (Please read the precautions on the back before filling out this page) Binding ---- Order ---------- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) Centimeters) 14 522378

if. Qi jealousy, 曰 慧 慧 讨 讨 苟 苟 二 二 肖 FiFi, --P; ^ V. Description of the invention (12) Effective. In addition, the shape of the large raised portion 151 may be a recessed portion formed on the side of the root element 152. (Fourth Embodiment) FIG. 7A is a side cross-sectional view when a slewing balance correction device of a rotator is applied to a hard disk device in a fourth embodiment of the present invention, and the first is a balance correction used in this embodiment Enlarged view of the recess of the aunt of the M code board. Generally, if the bending process is performed, the material will have a neutral line as its extension and contraction, depending on the extent of the extension. If it is broken, a slight metal test will be generated. In the hard setting, the metal powder will damage the magnetic head and the hard disk. For the code plate 15, a material with a large breaking elongation must be used. The shape shown in Figs. 7A and π is difficult to break, as shown in Figs. 7A and π. That is, when the projection 151 is bent at the root element 152, it is preferable to form a concave σρ having a curved surface such as a circular arc or an elliptical arc on the surface of the material I extending side. Therefore, as shown in FIG. 7B, the length of the element receiving the extension 271, the element 1 52 becomes longer than that of a straight line, and when the bowing process of the same angle is performed at the protrusion 丨 5 丨, the bending with less elongation is performed. machining. That is to say, it is possible to select materials that are more easily broken. If the same materials are compared, it is more difficult to break and the occurrence of metal powder can be suppressed, so it has a higher trust. As described above, the method and device for correcting the rotation balance of the slewing body according to the present invention. When assembling, the slewing plate with a protrusion having a protruding portion is installed on the slewing body. Zigzag, can be balanced and corrected for any amount and position. In addition, there will be no accompanying -------------- installation ------------ order --------- line (please read the note on the back first) (Fill in this page again)

522378 V. Description of the invention (13 agents and materials cutting and other purely selected woodworkers of η workers and students have the advantages of a simple structure and a single system for imbalance correction. For example, it can be used in hard disk devices to balance the rotation , * X + + correction method and device of the rotator in the set. On the hard disk is fixed as the disc center returns a sudden rise = the majority of the outer peripheral part extends radially at equal angular intervals: The disk-shaped body is coaxially fixed with the center axis of the rotation of the rotation body, and then, according to the balance of the rotation balance of the rotation body including the disk-shaped body, at least the protrusions are directed toward the inside of the disk-shaped body. Curved plastic deformation in the direction adjusts the balance of rotation. If so, it can be simply structured and operated, and the balance of the rotation body can be corrected without pollution.

(Please read the note on the back? Matters before filling out this page) 0 n n! Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs οσ Early

---- Order --------- Wire application This paper size is applicable to China National Standard (CNS) A4 specification (210 x 297 mm) 522378 A7 B7 V. Description of the invention (14) Comparison of component numbers

Qi § i! Cai — ISL 301 ... Base 3 0 2 ... Stator shaft center 3 0 3 ... Coil 304 ... Rotary shaft 3 0 5 ... Bearing 3 06 ... Disc core 3 0 7 ... Coil 308 ... magnet 309 ... Weight 310 ... Ring section 311 ... Disk 313 ... Platen disk 314 ... Screw 3 16 ... Rotary shaft 317 ... Cover 318 ... Adjuster 319 ... ·· Head 320 ··· Coil 321 ·· 322 ·. 400 " 450 " 305 1 3052 3061 3063 3064 3071 3072 308 1 3091 3101 3102 Center of gravity of the center axis of the disc spindle, · Inner, · Xibu wall-adjustment 1 · Inner wall • Screw hole '• Xibu • Inside ^' • Xibu wall-protrusions | · Station: Yard •• Supporting section ------------------ „--- -Order --------- (Please read the notes on the back before filling in this page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 17

Claims (1)

522378 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs C8 ---- ~ ________ VI. Application for Patent Scope L-A method for correcting the rotation balance of a rotating body, which includes: On the evening of the radial extension, the steps of the disk-shaped body having a plurality of large portions are fixed on the same axis as the rotation center axis of the rotation body; and, the rotation balance of the rotation body corresponding to the disk-shaped body In the state of balance, at least one of the plurality of protruding portions is bent toward the inner side of the disc-shaped body to obtain the step of balancing the rotation of the rotating body. 2 · If you shoot, please range first! The method for correcting the rotation of the rotator described in the above item, wherein the step of balancing the rotation of the rotator includes a step of twisting, as compared with other parts of the protrusion formed in the middle portion of the protrusion, which is a portion that is more easily tortuous. 3. The method for correcting the rotation of a rotator as described in item 丨 of the patent application scope, wherein the step of balancing the rotation of the rotator includes the step of forming the middle of the protrusion on the surface of the material extension side when the protrusion is tortuous. Steps in the recess. 4. A swing balance correction device for a swing body, comprising: a disk-shaped body fixed coaxially with a swing center axis of the swing body: and, at the outer periphery of the disk-shaped body, radially radiating at equal angular intervals The plurality of protrusions extend and are independently formed to meander in the direction of the inside of the disc-shaped body. 5. Rotary balance correction device for a rotator as described in item 4 of the scope of patent application, wherein the middle portion of the protrusion is formed with the protrusion, and the paper size of the protrusion is adapted to Chinese National Standard (CNS) A4 (210 X 297) Love) (Please read the notes on the back before filling this page) π Binding: Line! 18 522378 A8 B8 C8 D8 VI. Scope of patent application Other parts are more prone to twists and turns. 6. The slewing balance correction device for a slewing body according to item 4 of the scope of patent application, wherein a recess is formed on the side of the side where the material is extended when the protrusion is bent in the middle portion of the protrusion. 7. The slewing balance correction device for a slewing body as described in item 4 of the scope of patent application, the slewing system includes: 9 a disc core rotated by a motor; and a hard disc fixed to the disc core via the disc-shaped body . 8. The slewing balance correction device for a slewing body as described in item 7 of the scope of patent application, wherein a middle portion of the above-mentioned protrusions and other parts of the above-mentioned protrusions are easily twisted. 9. The slewing balance correction device for a slewing body according to item 7 of the patent application scope, wherein a recessed portion is formed on the side of the side where the material is extended when the protruding portion is bent in the middle portion of the protruding portion. —— — — — — — — — — — — II · 11 (Please read the notes on the back before filling this page)