KR19980054274U - Head stack assembly and head drive member assembly for hard disk drive - Google Patents

Abstract

The present invention relates to a head stack assembly and a head drive member assembly for a hard disk drive for mounting the head stack assembly and the head drive member on the base of the hard disk drive. The head stack assembly and the head drive member assembly for a hard disk drive according to the present invention are horizontally mounted so that the magnetic head faces the information recording surface of the hard disk corresponding to the head stack assembly mounted on the base of the hard disk drive. Pivoting, inserting the head drive member into the hinge axis of the base and rotating about the hinge axis, the operation for fitting to the coil side end of the head stack assembly can be done easily, quickly and accurately, while the head stack assembly is Since the gap between the head and the hard disk can be prevented in advance, contact between the magnetic head and the hard disk can be prevented, and damage to the magnetic head or damage to the hard disk due to the contact can be reliably prevented.

Description

Head stack assembly and head drive member assembly device for hard disk drive

The present invention relates to a head stack assembly and a head drive member assembly for a hard disk drive for mounting the head stack assembly and the head drive member on the base of the hard disk drive.

Generally, as shown in FIG. 1, a hard disk drive reads a plurality of hard disks 2 stacked and stacked on a base 1 and information on both information recording surfaces of each hard disk 2. Or a head stack assembly 3 for recording on each information recording surface, and a head drive member 6 for reciprocating rotation of the head stack assembly 3. One end of the head stack assembly 3 is coupled to stack a plurality of arms 4 as shown in FIG. 2, and a magnetic head 5 is attached to each arm 4. The other end of the head stack assembly 3 is provided with a coil 3a. The head drive member 6 is provided with a pair of upper and lower magnets 6a as shown in FIG. 3, and the head drive member 6 has the head stack assembly 3 between the magnets 6a. The coil 3a is coupled to the base 1 to be fitted, and then fixed by a screw that is fastened to the base 1 through the through holes 6c and 6d. After being assembled in this state, the headstack assembly 3 is subjected to electromagnetic interaction between the coil 3a and the magnet 6a, and thus, one side of the head driving member 6 as shown in solid line in FIG. 1. 1, the magnetic body 3b coupled to the head stack assembly 6 is reciprocated between the position where it is attached to the auxiliary magnet 6b of the head drive member 6, as shown by the virtual line in FIG. Can be.

Meanwhile, as is well known to those skilled in the art in assembling the head stack assembly 3 and the head driving member 6 to the base 1, first, the head stack assembly 3 is installed on the base 1, and then FIG. 4. As shown in FIG. 1, the through holes 6c of the head driving member 6 are fitted to the hinge shaft 1a of the base 1, and the magnetic heads 5 are separated from the edge of the hard disk 2. If present, one side of the head drive member 6 cannot be engaged by being caught by one end of the other end of the pre-inserted head stack assembly 3. Thus, the headstack assembly 3 is shown, for example, in a position and an imaginary line shown in solid lines in FIG. 1 such that the respective magnetic heads 5 face the information recording surface (upper and lower surface) of the hard disk 2 corresponding thereto. The first horizontal rotation to a proper first position between the closed positions so that the head drive member 6 inserted into the hinge shaft 1a of the base 1 is not caught by the head stack assembly 3, and then the head drive The member 6 is inserted into the hinge axis 1a of the base 1 as shown by the virtual line in FIG. Thereafter, the head drive member 6 is rotated in the direction of the arrow A so that the coil 3a portion of the head stack assembly 3 is sandwiched between the magnets 6a as described above. Then, as shown by the phantom line in FIG. 1, the head stack assembly 3 in the first position is secondarily rotated to the second position on the center side of the hard disk 2 so that the magnetic body of the head stack assembly 3 ( 3b) is attached to the auxiliary magnet 6b of the head drive member 6 so that the head stack assembly 3 is temporarily fixed in position. Thereafter, the head driving member 6 is screwed into the through holes 6c and 6d to the base 1. On the other hand, the magnetic force of the auxiliary magnet (6b) is significantly weak compared to the electromagnetic force generated between the coil (3a) and the magnet (6a), so when the current is applied to the coil (3a) the head stack assembly (3) Overcoming the temporary fixed state can be rotated to a position as shown by the solid line in FIG.

However, in the related art, as described above, the operation of rotating the head stack assembly in stages 1 and 2 and the operation of inserting and rotating the head driving member into the hinge shaft of the base are performed by manual operation by the operator. . As a result, it is difficult to expect improvement of workability, and when the fatigue of the worker is accumulated, the magnetic heads come into contact with the information recording surface of the hard disks in the process of rotating the head stack assembly, thereby damaging the information recording surface of the head or hard disk. There is a problem that occurs.

The present invention has been devised to solve such a problem, and in assembling the head stack assembly and the head driving member to the base of the hard disk drive, not only can the operation be performed quickly and accurately, but also the information recording surface or head of the hard disks. An object of the present invention is to provide an apparatus for assembling a head stack assembly and a head driving member for a hard disk drive, which can effectively prevent damage to the disk.

1 is a schematic plan view of main parts of a hard disk drive;

FIG. 2 is a schematic sectional view taken along line II-II of the headstack assembly shown in FIG. 1;

3 is a schematic cross-sectional view taken along line III-III of the head driving member shown in FIG. 1;

4 is a view for explaining a state in which the head drive member shown in Figure 1 is inserted into the base of the hard disk drive,

5 is a schematic plan view of a head stack assembly and a head driving member assembly for a hard disk drive according to the present invention;

6 is an enlarged view of the head stack assembly pivot shown in FIG. 5;

7 is a front view of the head stack assembly pivot shown in FIG. 6;

8 is a right side view of the head stack assembly pivot shown in FIG. 7;

9 and 10 is a view showing a state in which the pressing member shown in Figure 6 presses the head stack assembly,

FIG. 11 is a view illustrating a state in which the head stack assembly is rotated to a first position by the head stack assembly pivoting unit illustrated in FIG. 6;

12 is an enlarged view of the head driving member assembly shown in FIG. 5;

13 is a front view of the head driving member assembly shown in FIG. 12;

14 is a right side view of the head driving member assembly showing a state in which the vacuum suction head is lowered from the state shown in FIG.

15 is a view showing a state in which the horizontal movable body is moved and the vacuum suction head is lowered from the state shown in FIG.

FIG. 16 is a view showing a state in which the horizontal movable body is moved from the state shown in FIG. 12; FIG.

Explanation of symbols for main parts of the drawings

10 ... table 100 ... tray

110 Pneumatic cylinder 200 Head stack assembly pivot

210 ... First Motor 220 ... Frame

230 Pressing member 231 Projection

232 Disk insertion groove 250 Lift member

251 Distance measuring sensor 300 Head drive member assembly

310 vacuum suction head 320 lifting body

330 ... horizontal moving body 340 ... 1st cylinder

350 2nd cylinder 360 ... rotary actuator

1.Hard disk drive base 1a ... Hinge shaft

2 ... hard disk 3 ... headstack assembly

4 ... arm 5 ... magnetic head

6.Head drive member

In order to achieve the above object, the head stack assembly and the head driving member assembly for a hard disk drive according to the present invention are mounted on the base of a hard disk drive in which hard disks are stacked so as to be horizontally rotatable, and a magnetic head is provided at one end thereof. A plurality of mounted arm stack heads are horizontally rotated such that the magnetic heads face the information recording surface of the corresponding hard disk, and a head driving member for driving the head stack assembly is mounted on the base of the hard disk drive. It is inserted into the hinge shaft and rotated about the hinge shaft to be fitted to the other end of the head stack assembly. A table, a base of the hard disk drive in which the head stack assembly is installed, and the head driving member to be installed on the base are seated. The tray and the tray A tray conveying means for conveying to a predetermined position on the head, and a headstack assembly provided on the base of the hard disk drive on the tray conveyed to the predetermined position, wherein each magnetic head faces an information recording surface of the corresponding hard disk. Vacuum suctioning the headstack assembly rotating part which firstly rotates to the first position and then secondly rotates the magnetic head from the first position to a second position adjacent to the center side of the hard disk, and the head driving member on the tray. And a head driving member inserting means for inserting into the hinge shaft of the base while the head stack assembly is located in the first position, and a head driving member rotating means for rotating the head driving member inserted into the hinge shaft. There is a characteristic to the point.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 5 is a schematic plan view of a head stack assembly and a head drive member assembly for a hard disk drive according to the present invention. Referring to FIG. 5 together with FIGS. 1 to 4, the assembling apparatus of the present embodiment is for assembling the head stack assembly 3 and the head driving member 6 of the hard disk drive described with reference to FIGS. 1 to 4. And a tray 100 on which a table 10, a base 1 of a hard disk drive on which the head stack assembly 3 is installed, and the head driving member 6 to be installed on the base 1 are mounted, and a head. The stack assembly rotating part 200 and the head drive member assembly part 300 are provided.

The table 10 is provided with a pair of guide rails 14 to which the tray 100 is slidably coupled. The table 10 is also provided with a pneumatic cylinder 110 as a means for transferring the tray 100, the rod of the pneumatic cylinder 110 is connected to the tray 100. Accordingly, the tray 100 may be transferred along the guide rail 14 from the position shown by the solid line in FIG. 1 to the predetermined position shown by the virtual line by the operation of the pneumatic cylinder 110. The tray 100 may include a mounting groove for positioning the base 1 of the hard disk drive or the head driving member 6, or a positioning tool for positioning.

The head stack assembly pivot 200 includes a head stack assembly 3 installed on the base 1 of the hard disk drive on the tray 100 transferred to the predetermined position, and the magnetic heads 5 correspond to the head stack assemblies 3. Primary rotation to any first position facing the information recording surface of the hard disk 2, and again from the first position to the second position where the magnetic head 5 is adjacent to the center side of the hard disk 2 It rotates and is provided on the table 10 adjacent to the tray 100 conveyed to the said predetermined position.

In the present embodiment, as shown in FIGS. 6 to 8, the head stack assembly rotating unit 200 includes a first motor 210 installed on the table 10 and a frame 220 installed on the table 10. And a pressing member 230 coupled to the frame 220.

The frame 220 is fixed to the guide block 12, and the guide block 12 is slidable to the guide rail 11 disposed long toward the tray 100 transferred to the predetermined position on the table 10. Are combined. The frame 220 has a pulley 212 fixed to the output shaft 211 of the first motor 210 and one side of the belt 219 wound around the pulley 215 rotatably installed on the table 10. . Accordingly, the frame 220 receives the power of the first motor 210 through the pulleys 212 and 215 and the belt 219 to approach the hard disks 2 on the tray 100 transferred to the predetermined position. It may be horizontally moved in the direction of separation.

The frame 220 is provided with a long guide rail 221 in the vertical direction, the lifting member 250 is fixed to the guide block 253 slidably coupled along the guide rail 211. The pressing member 230 is fixed to the lifting member 250. The second motor 240 is fixed to the frame 220 as an actuator for elevating the pressing member 230, and is screwed with the elevating member 250 to the rotating shaft 241 of the second motor 240 The ball screw 242 is fixed. Accordingly, when the second motor 240 operates, the ball screw 242 rotates and the pressure member 230 fixed to the elevating member 250 and the elevating member 250 screwed with the ball screw 242. ) May be elevated along the guide rail 253. The elevating member 250 is provided with a distance measuring sensor 251 as a means for detecting the vertical distance of the pressing member 230 with respect to the hard disk of the uppermost of the hard disk (2). When the vertical distance between the uppermost hard disk 2 and the pressing member 230 is out of a predetermined value, a signal is generated by the distance measuring sensor 251 and the second motor 240 is based on the signal. In operation, the lifting member 250 and the pressing member 230 is raised or lowered to keep the vertical distance constant. On the other hand, the upper and lower light sensor 228 and the lower light sensor 229 is installed on the bracket 222 fixed to the frame so that the excessive lifting of the elevating member can be detected in advance, the elevating member 250 A sensor dog 250 fitted between the photometric sensor 228 and the lower photometric sensor 229 is provided.

The pressing member 230 is for pressing the arms 4 such that the head stack assembly 3 is rotated when the frame 220 approaches the hard disk 2, and the head stack assembly 3. And a plurality of protrusions 231 sandwiched between the arms 4 to prevent each of the magnetic heads 5 from contacting the information recording surface of the hard disk 2 corresponding thereto when the wheels are rotated. And a disk insertion groove 232 formed from the tip of 231 and into which the hard disk 2 can be inserted.

A rail support 290 is provided at a position adjacent to the guide rail 11, and a plurality of optical sensors 291, 292 and 293 are fitted into and fixed to the rail support 290. The optical sensor 293 has an optical transmitter 293a and an optical receiver 293b, and the optical sensors 291 and 292 also have an optical transmitter and a optical receiver. The optical sensors 291, 292 and 293 detect the sensor dog 227 installed in the frame 220 by the optical signal between the optical transmitter and the optical receiver, and transmit the detected signal to the first motor. The control unit 210 controls the operation of 210. The optical sensor 291 and the optical sensor 292 are respectively moved by the pressing member 230 during the movement of the frame 220, the head stack assembly (3) is rotated in the first position and the second position At this point, the position is fixed at an appropriate position to generate the detection signal.

The head driving member assembly 300 vacuum-sucks the head driving member 6 on the tray 100 to hinge the base 1 with the head stack assembly 3 in the first position. And a head driving member inserting means inserted into the shaft 1a, and a head driving member rotating means for rotating the head driving member 6 inserted into the hinge shaft 1a.

In the present embodiment as the head driving member inserting means, as shown in Figs. 12 to 14, the vacuum suction head 310, the lifting body 320 for supporting the vacuum suction head 310, and the lifting and lowering A horizontal movable body 330 is provided to support the sieve 320 and installed horizontally on the table 10.

The vacuum suction head 310 has a space therein connected to a vacuum source (not shown), and the vacuum suction head 310 is in close contact with the head driving member 6 by the vacuum source. When the vacuum is formed in the head driving member 6 is adsorbed to the vacuum suction head 310.

The rotary actuator 360 is provided at the tip of the lifting body 320. The rotary actuator 360 includes a main body 361 and a rotating shaft 362 rotatably installed at the main body 361 and rotated by pneumatic pressure flowing into the main body 361. The main body 361 of the rotary actuator is fixed to the lifting body 320, and the vacuum suction head 310 is provided on the rotation shaft 362 of the rotary actuator. Accordingly, the vacuum suction head 310 can be rotated relative to the lifting body 320 by the operation of the rotary actuator 360, the rotary actuator 360 is provided as the head driving member rotating means. The support member 311 is also fixed to the rotation shaft 362 of the rotary actuator 360. When the head drive member 6 is adsorbed to the vacuum suction head 310, the support member 311 is moved to the head drive member 6. Will come into contact with the sides of the

The guide rail 321 is installed in the lifting body 320 in the vertical direction, and the guide block 331 is slidably coupled to the guide rail 321. The horizontal movable body 330 is fixed to the guide block 331. The main body 341 of the first cylinder 340 provided as a lifting body driving actuator for lifting the lifting body 320 up and down is fixed to the horizontal movable body 330. The rod 342 of the first cylinder 340 is connected to the lifting body 320 through the bracket 343. Accordingly, the lifting body 320 may be elevated relative to the horizontal movable body 330 by the operation of the first cylinder 340.

A guide rail 19 is installed on the support plate 18 fixed to the table 10 toward the hard disks 2, and a guide block 332 slidably coupled to the guide rail 19 is provided. It is fixed to the lower portion of the horizontal movable body (330). The support plate 18 is fixed to the main body 351 of the second cylinder 350 provided as a horizontal movable body driving actuator for horizontally moving the horizontal movable body 330. The rod 352 of the second cylinder 350 is connected to the horizontal movable body 330. Accordingly, the horizontal movable body 330 may be horizontally moved relative to the table 10 by the operation of the second cylinder 350. As a result of the horizontal movement of the horizontal movable body 330, the vacuum suction head 310 is vertically upward of the head driving member 6 seated on the tray 100 and the hinge axis of the base 1 of the hard disk drive. 1a) It can be reciprocated between vertically upwards. In FIG. 13, reference numeral 335 denotes a shock absorber that restricts the stroke of the horizontal movable body 330 and buffers the same.

A process of assembling the head drive member 6 while rotating the head stack assembly 3 stepwise by the apparatus configured as described above will be described.

First, on the tray 100 in a state where the tray 100 is located at the position shown by the solid line in FIG. 5, the hard disks 2 are coupled in multiple layers and the head stack assembly 3 is installed to be rotatable. The base 1 and the head drive member 6 of the disk drive are respectively seated. In this state, the pneumatic cylinder 110 is operated to transfer the tray 100 to a predetermined position shown by a virtual line in FIG. 5. As such, when the tray 100 is transferred to the predetermined position, the first motor 210 is operated so that the belt 219 driven by the first motor 210 moves the frame 220 to FIGS. 5 to 7. From the position shown is to be transferred to the tray 100 side along the guide rail (11). As described above, the projection 231 of the pressing member 230 provided on the elevating member 250 while the frame 220 is transferred to the tray 100 is provided on the base 1 of the hard disk drive on the tray 100. It fits between the arms 4 of the stack assembly 3 to prevent the corresponding arms 4 from approaching each other. On the other hand, before the pressing member 230 contacts the arm 4 of the hard stack assembly 3, the distance measuring sensor 251 faces the hard disk 2 of the uppermost layer in advance and When the vertical distance of the pressing member 230 is sensed and the vertical distance is out of a predetermined range, the signal is sent to a control unit for controlling the operation of the second motor 240 to operate the second motor 240. As the pressing member 230 is raised or lowered by the operation of the second motor 240, the vertical distance of the pressing member 230 with respect to the hard disk may be properly adjusted. By doing so, for example, it is possible to effectively cope with the case where the height of mounting of the base 1 to the tray 100 is changed or there is a model change of the hard disk drive.

As the frame 220 continues to move, the pressing member 230 presses the arms 4 of the head stack assembly 3 so that the head stack assembly 3 is rotated toward the hard disk 2. Then, the magnetic head 5 coupled to each arm 4 starts to face the information recording surface (upper and lower surface) of the hard disk 2 corresponding thereto as shown in FIG. At this time, the magnetic heads 5 facing the upper and lower surfaces of the hard disk 2 are prevented from accessing the arms 4 supporting the magnetic heads 5 by the protrusion 231 of the pressing member 230. Therefore, the hard disk 2 is not in contact with the hard disk 2, and damage to the magnetic head 5 or the hard disk 2 due to the contact is prevented. In this state, if the frame 220 continues to move, the head stack assembly 3 is continuously rotated by the pressing member 230, and the random position between the position shown by the solid line in FIG. 1 and the second position shown by the imaginary line is shown. 11, the magnetic heads 5 face the information recording surface of the hard disk 2 corresponding thereto as shown in FIG. 11, and the hard disk is the disk insertion groove 232 of the pressing member 230. As shown in FIG. It is inserted into the predetermined depth. When the head stack assembly 3 is rotated to the first position as described above, the sensor dog 227 of the frame 220 which is horizontally moved is positioned between the light transmitter and the light receiver of the optical sensor 291. Accordingly, the optical sensor 291 detects the sensor dog 227 to generate a signal, and the controller for controlling the operation of the second motor 240 controls the operation of the second motor 240 by the signal. Stopped. Accordingly, the horizontal movement of the frame 220 and the advancement of the pressing member 230 are stopped, and the rotation of the head stack assembly 3 by the pressing member 230 is also temporarily stopped at the first position.

As described above, when the rotation of the head stack assembly 3 stops in the state of being positioned in the first position, the first cylinder 340 of the head driving member assembly 300 is removed in the state shown in FIG. 12. In operation, the lifting body 320 is lowered. When the lifting body 320 is lowered, the vacuum adsorption head 310 coupled to the lifting body 320 is lowered together via the rotary actuator 360, and as shown in FIG. 14, on the tray 100. It is in close contact with the head driving member 6 seated. In this state, a vacuum is formed in the vacuum suction head 310 by the vacuum source, and the head driving member 6 is sucked to the vacuum suction head 310 by the vacuum suction force.

As described above, when the vacuum suction head 310 sucks the head driving member 6 on the tray 100, the first cylinder 340 operates to raise the lifting body 320 again. And the head driving member 6 adsorbed by the vacuum suction head 310 are lifted from the tray 100. Then, when the second cylinder 350 is operated to move the horizontal movable body 330 relative to the tray 100, the lifting body 320 coupled to the horizontal movable body 330 is advanced together, and the lifting body The through hole 6c of the vacuum suction head 310 coupled to the 320 and the head driving member 6 sucked by the vacuum suction head 310 is formed on the base 1 of the hard disk drive on the tray 100. It is located vertically above the hinge axis 1a. In this state, when the vacuum suction head 310 is lowered by driving the first cylinder 340 again, the head is placed on the base 1 of the hard disk drive of the head driving member 6 as shown in FIG. 15. The through hole 6c of the drive member 6 is fitted to the hinge shaft 1a of the base 1.

Thereafter, when the rotary actuator 360 is operated, the vacuum suction head 310 fixed to the rotary shaft 362 of the rotary actuator is rotated. Accordingly, the head driving member 6 adsorbed to the vacuum suction head 310 is rotated in the direction of the arrow A as shown in FIG. 16, so that the coil 3a of the head stack assembly 3 is wound around the end of the head stacking assembly 3. Will be fitted.

In this state, the first motor 210 of the head stack assembly pivot 200 is operated again to advance the frame 220. Accordingly, the pressing member 230 is formed by the above-described method of the head stack assembly 3 stationary in the first position, and the magnetic heads 5 are positioned adjacent to the center side of the hard disk 2 by the method described above. Rotate to 2 position. When the head stack assembly 3 is rotated to the second position as described above, the magnetic body 3b of the head stack assembly 3 is attached to the auxiliary magnet 6b of the head driving member 6 as described with reference to FIG. 1. . Accordingly, the relative movement of the head stack assembly 3 and the head driving member 6 is temporarily prevented, and the stepwise rotation of the head stack assembly 3 is completed, and the coupling of the head driving member 6 is completed. As a result, the assembly of the head stack assembly 3 and the head drive member 6 is completed.

When the assembly of the head stack assembly 3 and the head driving member 6 is completed in this way, the first motor 210 is rotated in reverse to retreat the frame 220. Accordingly, the pressing member 230 moves the head. It is retracted relative to its headstack assembly 3 as it exits the stack assembly 3. The vacuum suction head 310 releases the suction state of the head driving member 6 while the vacuum state therein is released. Then, the vacuum suction head 310 is raised by the first cylinder 340, and the vacuum suction head 310 is returned to the position as shown in FIG. 13 by the second cylinder 350.

Thereafter, the screw is fastened through the through hole 6c and the through hole 6d by an appropriate screw fastening means to fix the assembled head drive member 6 to the base 1.

As can be seen from the above description, when using the head stack assembly and the head drive member assembly for a hard disk drive according to the present invention, the head stack assembly (3) mounted on the base (1) of the hard disk drive to be rotatable horizontally. ) Is rotated horizontally so that the magnetic head 5 faces the information recording surface of the hard disk 2 corresponding thereto, and the head drive member 6 is inserted into the hinge shaft 1a of the base 1 and the hinge shaft ( Rotation about 1a) can be done easily, quickly and accurately for fitting to the coil 3a side end of the headstack assembly 3. Further, since the distance between the magnetic head 5 and the hard disk 2 can be prevented from narrowing while the head stack assembly 3 is rotated, the contact between the magnetic head 5 and the hard disk 2 is prevented. This prevents damage to the magnetic head 5 and damage to the hard disk 2 due to the contact thereof.

Headstack assembly and head drive member assembly for the hard disk drive of the present invention is not limited to the configuration of the above-described embodiment, the device having various configurations within the scope of the claims of the present invention by those skilled in the art It may be easily configured.

For example, even if the distance measuring sensor 251 is not provided, the object of the present invention can be sufficiently achieved. In addition, when the head stack assembly 3 is in the first position and the second position, the position of the frame 220 is calculated in advance and input to the control unit for controlling the operation of the first motor 210. Even without installing the sensors 291, 292, and 293, accurate position control of the frame 220 can be performed.

As described above, the head stack assembly and the head drive member assembly for a hard disk drive according to the present invention, the head stack assembly mounted on the base of the hard disk drive so as to be horizontally rotated, the magnetic head corresponding to the information of the hard disk It can be done easily, quickly and accurately by inserting the head drive member into the hinge axis of the base and rotating it about the hinge axis of the head stack assembly so as to rotate horizontally to face the recording surface, and to rotate it about the hinge axis of the base. Since the gap between the magnetic head and the hard disk can be prevented from being narrowed during rotation, the contact between the magnetic head and the hard disk can be prevented and the damage of the magnetic head or the hard disk due to the contact can be reliably prevented. Can be.

Claims (8)

The headstack assembly is mounted on the base of a hard disk drive in which hard disks are stacked, and at one end thereof, a head stack assembly including a plurality of arms having magnetic heads mounted thereon is placed on the information recording surface of the corresponding hard disk. It rotates horizontally so that the head drive member for driving the head stack assembly is inserted into the hinge axis of the base of the hard disk drive and rotated about the hinge axis to be fitted to the other end of the head stack assembly. Table, A tray on which the base of the hard disk drive in which the head stack assembly is installed and the head driving member to be installed on the base are mounted; Tray conveying means for conveying the tray to a predetermined position on the table; The headstack assembly provided on the base of the hard disk drive on the tray transferred to the predetermined position is first rotated to a first position where each magnetic head faces the information recording surface of the corresponding hard disk, and then the first head assembly is rotated. A head stack assembly pivoting portion for rotating the magnetic head from a position to a second position adjacent to the center side of the hard disk; A head driving member inserting means for vacuum suctioning the head driving member on the tray to insert the head driving assembly into the hinge shaft of the base while the head stack assembly is located at the first position; And a head drive member rotating means for rotating the head drive member inserted into the hinge shaft. The method of claim 1, The head stack assembly pivot unit is coupled to the frame, a first motor installed on the table, a frame installed on the table and horizontally moved in a direction approaching and spaced apart from the hard disks by the first motor; A pressing member for pressing the arms such that the head stack assembly is rotated when the frame moves closer to the hard disk side, The pressing member includes a plurality of protrusions sandwiched between the arms to prevent each of the magnetic heads from contacting the information recording surface of the hard disk corresponding thereto when the head stack assembly is rotated, and the protrusions A head stack assembly and a head drive member assembly for a hard disk drive, characterized in that it has a disk insertion groove which is formed from the front end to which the hard disk can be inserted. The method of claim 1, A head stack assembly and a head drive member assembly for a hard disk drive, characterized in that the vertical distance sensing means for detecting the vertical distance of the pressing member relative to the hard disk of the top of the hard disks. The method of claim 1, The pressing member is coupled to the frame by a predetermined distance lifting, Head frame assembly and head drive member assembly device for a hard disk drive, characterized in that the frame is provided with an actuator for raising and lowering the pressing member. The method of claim 1, wherein the head drive member inserting means, A vacuum suction head capable of vacuum sucking the head driving member by a vacuum pressure formed therein; A lifting body supporting the vacuum suction head; Supporting the lifting and lowering body, the vacuum suction head to the table so that the vertical axis of the head drive member seated on the tray and the hinge axis of the base of the hard disk drive can be reciprocated between the vertical direction A horizontal movable body installed to be movable horizontally, An actuator for driving an elevating body for elevating the elevating body; And a horizontal movable body driving actuator for reciprocating the horizontal movable body. The method of claim 5, wherein the head drive member rotating means, And a rotary actuator rotatably coupled to the main body and the rotary actuator installed at the tip thereof, the rotary actuator being installed at the tip thereof, wherein the head stack assembly and the head drive assembly assembly for a hard disk drive are included. The actuator for driving the elevating body according to claim 5, The head stack assembly and the head drive member assembly for a hard disk drive, characterized in that the main body is fixed to the horizontal movable body and the rod is a first cylinder connected to the lifting body. According to claim 5, The actuator for moving the horizontal body, The head stack assembly and the head drive member assembly for a hard disk drive, characterized in that the main body is fixed to the table and the rod is connected to the horizontal movable body.