JP2013211072A - Magnetic head positioning device and magnetic head inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic head positioning device and a magnetic head inspection device that improve positioning precision of a magnetic head.SOLUTION: A magnetic head positioning device includes a coarse movement actuator which places a magnetic head in coarse movement operation in two dimensions, a second fine movement actuator mounted on the coarse movement actuator, and a first movement fine actuator mounted on the second fine movement actuator. The first fine movement actuator has a fixed portion including a piezo actuator, a movable portion which has a head holding portion holding a head gimbal assembly (HGA) on a tip side, and moves the HGA by the piezo actuator, and an HGA replacement mechanism such that a pressing force generation portion having pressing force generation means of generating pressing force for holding the HGA and a replacing mechanism fixed portion for fixing the pressing force generation portion are provided to the fixed portion.

Description

  The present invention relates to a magnetic head positioning apparatus and a magnetic head inspection apparatus, and more particularly to a magnetic head positioning apparatus and a magnetic head inspection apparatus that can improve the positioning accuracy of a magnetic head.

  A magnetic head inspection apparatus will be described with reference to the embodiment of the present invention shown in FIG. The magnetic head inspection apparatus records and reproduces data on the magnetic disk while the magnetic head 5 is levitated on the magnetic disk H rotated by the spindle S, and tests the magnetic head.

  The magnetic head inspection apparatus includes a first fine movement actuator 100 that moves by mounting the magnetic head 6, a second fine movement actuator 9 that moves by mounting the first fine movement actuator 100, and a second fine movement actuator 9. The X-direction carriage 3 is a moving X-direction coarse actuator and the Y-direction carriage 10 is a Y-direction coarse actuator.

  The first fine movement actuator 100 includes a fixed portion 1 attached to the cartridge base 9d, a piezo actuator 2 which is fixed to the fixed portion 1 at one end and expands and contracts, and a movable portion 7 which is moved by the expansion and contraction of the piezo actuator 2. Have. The movable portion 7 includes a beam portion 42 and an arm 5 that is provided on the distal end side of the beam portion and is a head fixing portion that holds a head gimbal assembly (HGA) 12 assembled with the magnetic head 6.

  The test of the magnetic head 6 is performed by replacing the HGA 12 one after another. Therefore, an HGA exchange mechanism that can exchange the HGA 12 is necessary. As a conventional HGA exchange mechanism, for example, there is one disclosed in Patent Document 1 schematically shown in FIG. The HGA exchange mechanism shown in FIG. 8 has a plate spring 81 that presses the HGA 12 against the stopper 63 to hold the HGA 12, and one end that releases the press is fixed to the plate spring to replace the HGA 12 with the next HGA 12. An operating lever 82 for rotating the fixed rod 83 is provided on the arm 5 of the movable portion 7.

JP 2010-225247 A

  With the recent increase in the density of magnetic disks, there has been a demand for higher magnetic head positioning accuracy. In order to meet this requirement, it is desired to reduce the weight of the movable part and increase the resonance frequency. In the conventional magnetic head inspection apparatus, since the HGA exchange mechanism is provided in the movable part of the magnetic head positioning apparatus, the weight of the movable part is increased correspondingly and the inertial force is increased. In addition, the leaf spring has been a factor in causing a decrease in resonance frequency.

  An object of the present invention is to provide a magnetic head positioning apparatus and a magnetic head inspection apparatus that can improve the positioning accuracy of a magnetic head.

In order to achieve the above object, the present invention has at least the following features.
The present invention includes a coarse actuator that coarsely moves a magnetic head in two dimensions, a second fine actuator mounted on the coarse actuator, and a first fine actuator mounted on the second fine actuator. The first fine actuator has a fixed portion having a piezo actuator, a head holding portion for holding a head gimbal assembly (HGA) on the tip side, a movable portion for moving the HGA by the piezo actuator, and the HGA And an HGA exchanging mechanism provided with a pressing force generating section having a pressing force generating means for generating a pressing force for holding the holding mechanism and an exchange mechanism fixing section for fixing the pressing generating section. One feature.

  Further, in the present invention, the fixed portion includes a hinge provided on the fixed portion on the left and right sides with respect to a center line in the expansion / contraction direction of the piezo actuator, on the tip side of the piezo actuator, and the movable portion The second feature is that it has two beams each provided with the hinges, and a head fixing portion that has the head holding portion and is provided on the front end side of the two beams.

  Furthermore, in the present invention, a predetermined position is provided between at least one of the two beams and the head fixing portion, and an additional hinge is provided between the predetermined position and the fixing portion. Is the third feature.

  Further, in the present invention, the pressing force generating unit includes an operation unit that releases the pressing force, and a holding rod that has one end side that applies the pressing force to a holding hole provided in the HGA, and the head holding unit. The fourth feature is that it has an HGA holding portion that is fixed to the head fixing portion and holds the HGA, and a stopper that locks the HGA by the pressing force.

  Further, in the present invention, the pressing force generating means is a torsion coil spring, and the operation means has an operation portion fixed to the other end side of the torsion coil spring having one end side fixed to the exchange mechanism fixing portion. The fifth feature is that the other end of the holding rod is fixed to the operation portion.

  In the present invention, the pressing force generating means is a tension spring or a compression spring, the other end side of the holding rod is fixed to one end side of the tension spring or the compression spring, and the operation means is the tension spring. And an operation unit fixed to the other end of the spring or the compression spring, and an operation unit holding unit fixed to the fixing unit or the exchange mechanism fixing unit and holding the operation unit. Features.

  Furthermore, the present invention has as a seventh feature that the pressing generation portion is provided on a base surface facing the magnetic disk.

  According to the present invention, the magnetic head positioning device according to any one of the first to seventh features, the magnetic head positioning device are controlled, data is read from a magnetic head provided at the tip of the HGA, It has an eighth feature that it has a control processing device for judging the quality of a magnetic head.

  The present invention has been made in view of the above problems, and can provide a magnetic head positioning apparatus and a magnetic head inspection apparatus capable of improving the positioning accuracy of the magnetic head.

1 is an overview of a magnetic head inspection apparatus that is an embodiment of the present invention. It is explanatory drawing which shows the structure and operation | movement of a 1st fine movement actuator in this embodiment. FIG. 3 is an overview of a first fine movement actuator and an HGA exchange mechanism shown in FIG. 2. It is a figure which shows the 1st Example of an HGA exchange mechanism. It is sectional drawing of Fig.4 (a). It is a figure which shows the 2nd Example of an HGA exchange mechanism. It is a figure which shows the 3rd Example of an HGA exchange mechanism. It is a figure which shows the conventional HGA exchange mechanism typically.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a magnetic head inspection apparatus according to an embodiment of the present invention.
The magnetic head inspection device 200 includes a magnetic head positioning device 20 and a control processing device 30 that controls the magnetic head positioning device 20 and reads data from the magnetic head 6 to determine whether the magnetic head 6 is good or bad.

  The magnetic head positioning device 20 includes a first fine movement actuator 100, a second fine movement actuator 9, an X direction carriage 3 that is an X direction coarse movement actuator that moves by mounting the second fine movement actuator 9, and a Y direction coarse movement actuator. On the base surface facing the magnetic disk H, the Y-direction carriage 10, the spindle S that rotates the magnetic disk H that is a recording medium at high speed, the X-direction carriage 3, the Y-direction carriage 10 and the spindle S are mounted. And an HGA exchange mechanism 70 for exchanging the HGA 12. In this embodiment, the magnetic head positioning device 20 is placed horizontally and FIG. 1 is a plan view. However, the magnetic head positioning device 20 may be placed vertically.

  A magnetic disk H as a recording medium is detachably mounted on a spindle S and has a high-density recording surface with a narrow track width. The spindle S is mounted on a spindle motor (not shown) and is rotated at a high speed as the spindle motor rotates. The spindle motor is fixed to the surface plate 21 and is installed at the left and right center of the rear part. The surface plate 21 is formed in a thin rectangular shape, and its longitudinal direction (front-rear direction) is the X direction and its short direction (left-right direction) is the Y direction.

  The X-direction carriage 3 is disposed adjacent to the front of the spindle S and is mounted on the surface plate 21. The X direction carriage 3 includes an X motor 3a fixed to the surface plate 21, an X screw 3b fixed to the rotation shaft of the X motor 3a and extending in the X direction, and an X movement movably attached to the X screw 3b. It consists of a member 3c and an X moving base 3d which is fixed to the free end of the X moving member 3c and is movable together with the X moving member 3c. The X screw 3b and the X movement base 3d are juxtaposed on the left and right. As the rotation shaft of the X motor 3a rotates, the X screw 3b rotates, and thereby the X moving member 3c and the X moving base 3d move in the arrow X direction. The X direction carriage 3 is a coarse actuator for moving the magnetic head 6 in the X direction.

  The Y direction carriage 10 is mounted on the X movement base 3d and fixed, a Y screw 10b fixed to the rotation shaft of the Y motor 10a and extending in the Y direction, and attached to the Y screw 10b to be movable. The Y moving member 10c and a Y moving base 10d which is fixed to the free end of the Y moving member 10c and is movable together with the Y moving member 10c. The Y screw 10b and the Y moving base 10d are juxtaposed in the front-rear direction. As the rotation shaft of the Y motor 10a rotates, the Y screw 10b rotates, and thereby the Y moving member 10c and the Y moving base 10d move in the Y direction (arrow B direction). The Y-direction carriage 10 is a coarse actuator for moving the magnetic head in the Y direction. Note that the X-direction carriage 3 and the Y-direction carriage 10 are not limited to the above-described configuration, and a linear motion motor or the like can be used instead.

  The second fine movement actuator 9 includes a second head unit 9b on which the first fine movement actuator 100 is mounted, and a second drive unit 9a that drives the second head unit 9b.

  The first fine actuator 100 includes a fixed portion 1 attached to the cartridge base 9d, a piezo actuator 2 having one end fixed to the fixed portion 1 and expanding and contracting, and a head gimbal assembly (HGA) assembled by expansion and contraction of the piezo actuator 2. ) And a movable portion 7 for moving 12 in the E direction. The movable portion 7 includes a beam portion 42 that moves the HGA 12 in the direction E by expansion and contraction of the piezo actuator 2, and an arm 5 that holds a head gimbal assembly (HGA) 12 assembled with the magnetic head 6 at the distal end side of the beam portion. And have. The piezo actuator 2 is configured to be lighter and faster than the second fine actuator 9.

  With such a configuration, the X carriage 3 and the Y carriage 10 move to the upper surface of the magnetic disk H, and the second fine movement actuator 9 finely moves the magnetic head 6 to the inspection position. Then, the first fine actuator 100 is moved in the direction E in synchronization with the rotational frequency of the magnetic disk, and the magnetic head 6 is inspected.

  FIG. 2 is an explanatory diagram showing the configuration and operation of the first fine movement actuator 100 in the present embodiment. FIG. 3 is a schematic view of the first fine actuator 100 and the HGA exchange mechanism 70 shown in FIG. In the first fine actuator 100, assuming that the surface facing the magnetic disk H is the base surface and the opposite side is the top surface, FIG. 2 is a view seen from the top surface, and FIG. 3 is a bird's eye view seen from the base surface side. is there. Note that 2a in FIG. 3 indicates a place where the piezo actuator 2 is installed.

  As shown in FIGS. 2 and 3, the first fine movement actuator 100 includes one piezo actuator 2 attached to the fixed portion 1 and a beam coupling portion 43 that is in pressure contact with the tip of the piezo actuator 2. Further, the first fine actuator 100 is provided with hinges 4a and 4b arranged on the left and right with respect to the center line 16 in the expansion / contraction direction of the piezo actuator 2 and the hinges 4a and 4b. The push beam 42a and the pull beam 42b constituting the beam portion 42, and the hinge connection portions 8a and 8b connected to the push beam 42a or the pull beam 42b.

  Further, the first fine actuator 100 includes an arm 5 that is a head fixing portion connected to the tip of the hinge connecting portions 8a and 8b, and between the arm 5 and the fixing portion 1 in the vicinity of the hinge connecting portions 8a and 8b. And an additional hinge 41. The hinge connecting portions 8a and 8b are connected to the left and right of the center line 5c in the longitudinal direction of the arm 5 at the base 5a of the arm 5. Further, the arm length L1 is larger than the distance L9 between the hinge connecting portions 8a and 8b, and the moving distance (hereinafter referred to as a stroke) of the tip 121 of the HGA 12 can be increased.

  The HGA exchange mechanism 70 (70A) is provided in the fixed portion 1 adjacent to the arm 5 and has a pressing force generating unit that generates a pressing force for holding the HGA 12 and an operating unit that releases the pressing force. 50 (50A) and a head holding part 60 (60A) provided on the arm 5 of the movable part 7 and holding the HGA 12. With this HGA exchange mechanism 70, the HGA 12 can be attached to and detached from the arm 5. Details of the HGA exchange mechanism 70 will be described later.

  As shown in FIG. 2, when the piezo actuator 2 extends, the push beam 42a and the pull beam 42b open to the left and right as indicated by arrows 13a and 13b, respectively. One of the hinge connecting portions 8a and 8b connected to the push beam 42a or the pull beam 42b opened to the left and right is pushed, the other is pulled, the arm 5 is rotated, and the HGA 12 attached thereto is as indicated by an arrow 15 It is displaced to.

  In this embodiment, when the piezo actuator 2 is in the neutral state, the push beam 42a and the pull beam 42b are parallel to the fixed portion 1 and perpendicular to the center line 16 in the expansion / contraction direction of the piezo actuator 2. . Therefore, when used for magnetic head positioning, the first fine actuator 100 is installed with a predetermined bias angle. Of course, when the piezo actuator 2 is in the neutral state, the push beam 42a and the pull beam 42b are parallel to each other and maintained perpendicular to the center line 16 in the expansion / contraction direction of the piezo actuator 2 with respect to the fixed portion 1. May be installed with a predetermined bias angle.

  The reason why the piezoelectric actuator 2 is used as the actuator for pushing the hinges 4a and 4b in the first fine actuator 100 is that the characteristics of the piezoelectric actuator are suitable as an actuator for positioning. The characteristics of the piezo actuator include large generated force and small size, high displacement resolution, low power consumption compared to the electromagnetic type, and no magnetic flux, so there is no problem of leakage magnetic flux. .

  In the present embodiment, the resonance frequency of the magnetic head positioning fine actuator 100 is increased by having the additional hinge 41. For example, by providing the additional hinge 41 in FIG. 2, the resonance frequency can be increased by 30% compared to when the additional hinge 41 is not provided. Further, the closer the additional hinge position is to the tip 121 of the HGA 12, that is, the smaller L2 is, the lower the stroke of the tip 121 is. However, by setting L2 to an appropriate position, the resonance frequency can be increased without reducing the stroke so much.

(Example 1 of HGA exchange mechanism)
FIG. 4 is a diagram showing a first embodiment 70A of the HGA exchange mechanism 70. As shown in FIG. FIG. 4A is a view seen from the direction of arrow A in FIG. FIG. 4B is a diagram viewed from the arrow B in FIG. FIG. 5 is a cross-sectional view of FIG. Hereinafter, the HGA exchanging mechanism 70A according to the first embodiment will be described with reference to FIG. 4 together with FIG. 3 and FIG.

  As described above, the HGA exchanging mechanism 70A is provided in the fixed portion 1 adjacent to the arm 5, and has a pressing force generating means for generating a pressing force for holding the HGA 12 and an operating means for releasing the pressing force. The generator 50 </ b> A and a head holder 60 </ b> A that is provided on the arm 5 and holds the HGA 12 are included.

  The pressing force generation unit 50A includes a torsion coil spring 52 that is a pressing force generation unit, an operation unit 51 that is an operation unit that releases the pressing force by rotating the torsion coil spring 52 in the direction opposite to the arrow H, and one end of the operation unit 51. And an exchange mechanism fixing portion 53 having a through-hole 53h through which the holding rod 54 can be rotated in the direction of arrow H. The holding rod 54 includes a through rod portion 54 a that passes through the through hole 53 h and a holding rod portion 54 b that is orthogonal to the through rod portion 54 a and holds the HGA 12.

One end side of the torsion coil spring 52 is fixed to the operation unit 51 and the other end side thereof is fixed to the exchange mechanism fixing unit 53, and a torsional force is always generated in the arrow H direction.
In the embodiment, the operation portion 51 is provided on the fixing portion 1 side. However, the operation portion 51 described in the first embodiment is a simple spring fixing portion of the torsion coil spring 52, and is fixed with the arm 5, that is, the head holding portion interposed therebetween. The penetrating bar portion 54a may be extended on the side opposite to the portion 1, and an actual operation portion may be provided at an end portion thereof. In this case, the holding bar 54 is T-shaped, and the penetrating bar part 54a that forms the horizontal bar of T has two ends.

  In the present embodiment, the torsion coil spring 52 is held by the frame 52w. However, if the torsion coil spring 52 itself has a holding force for holding the operation portion 51, or the through-hole portion 53h holds the through-rod portion 54a. By providing a holding mechanism and holding the operation unit 51, the frame 52w may not be provided. As the holding mechanism, a bearing may be provided, or the inner surface of the through hole 53 may be a sliding surface having a small frictional resistance.

  On the other hand, the head holding portion 60A includes an HGA holding portion 61 provided on both sides of the arm 5, a holding rod frame 62 fixed to the arm 5 and including the holding rod 54, and a stopper 63 of the HGA 12 fixed to the arm 5. And have. The holding rod frame 62 includes a hole 62h through which the through rod portion 54a passes, and the arm 5 includes a holding rod portion movable hole 5h that can rotate in the direction of arrow H of the holding rod portion 54b. Note that the holding rod frame 62 is not necessarily provided, and the holding rod portion 54b may be bare.

The operation of the HGA exchange mechanism 70A having such a configuration will be described. The torsion coil spring 52 always generates a torsional force in the H direction. Therefore, as shown in FIG. 4B, the holding bar portion 54b always generates a pressing force in the H ′ direction. Therefore, if the HGA 12 is placed on the HGA holding portion 61, the HGA 12 is pressed against the stopper 63 that locks the HGA 12 by the pressing force of the holding rod portion 54b that is present in the holding hole 12h that the HGA 12 has. Held in the part 61.
When taking out the HGA 12 from the HGA holding part 61, the operating part 51 is rotated in the direction opposite to the H direction to release the pressing force, thereby separating the holding bar part 54b from the HGA 12 and taking out the HGA 12.

  Therefore, according to the first embodiment described above, the movable portion 7 can be lightened by providing the pressing force generating portion 50A of the HGA exchange mechanism 70A on the fixed portion 1 of the first fine actuator 100. As a result, the inertial force of the movable part 7 is reduced, and the positioning accuracy of the magnetic head 6 can be improved. Along with this, the output of the piezo actuator is also reduced. As a result, the piezo actuator can be made smaller, leading to energy saving.

  Furthermore, according to the first embodiment described above, since the leaf spring is not used to fix the HGA 12, the resonance frequency of the apparatus can be increased and the positioning accuracy of the magnetic head can be improved.

(Example 2 of HGA exchange mechanism)
FIG. 6 is a diagram showing a second embodiment 70B of the HGA exchange mechanism 70. As shown in FIG. FIG. 6A is a view corresponding to FIG. 4B, and is a view of the head holding portion 60B as viewed from the arrow B shown in FIG. 4A. FIG. 6B is a diagram viewed from an arrow C shown in FIG. 4A in the second embodiment corresponding to FIG. In the second embodiment, components having the same structure or function as those in the first embodiment are denoted by the same reference numerals.

  The difference of the second embodiment from the first embodiment is that a stopper 63 is provided on the center side of the HGA 12. Accordingly, the following two points have been changed. First, the stopper through-hole 12s having a contact portion with the stopper 63 is provided on the center side of the HGA 12. Second, the direction in which the torsion coil spring 52b always generates a torsional force is the direction opposite to the H direction in the first embodiment. Other points are the same as those in the first embodiment.

  In the second embodiment, the same effect as that of the first embodiment can be obtained.

(Example 3 of HGA exchange mechanism)
FIG. 7 is a diagram showing a third embodiment 70C of the HGA exchange mechanism 70. As shown in FIG. FIG. 7A is a diagram viewed from an arrow B in the third embodiment corresponding to FIG. FIG. 7B is a view of the head holding portion 60C as viewed from the arrow D in FIG. In the third embodiment, components having the same structure or function as those in the first embodiment are denoted by the same reference numerals.

  The difference of the third embodiment from the first embodiment is that the method of generating the pressing force of the holding bar portion 54b against the stopper 63 is different. In the first embodiment, the force is generated by the torsion coil spring 52b, whereas in the third embodiment, the pressing force is generated in the direction of arrow G by the tension spring 57. One end of the tension spring 57 is fixed to the holding rod portion 54 b and the other end is fixed to the operation portion 51. The operation means includes an operation unit 51 and an operation unit holding unit 57 s that includes a magnet (not shown) and magnetically holds the operation unit 51 and is fixed to the fixing unit 1 or the exchange mechanism fixing unit 53. Further, the penetrating bar portion 54a has a rotation fulcrum 54c, and rotates around the rotation fulcrum in the paper, and accordingly, the holding rod 54b rotates around the rotation fulcrum on a plane perpendicular to the paper surface.

The operation unit holding unit 57 may be configured to hold the operation unit 51 with a hook or an adhesive material.
The other points are the same as in the first embodiment.

The operation of the HGA exchange mechanism 70C having such a configuration will be described. The tension spring 57 generates a tensile force in the G direction when the operation unit 51 is held by the operation unit holding unit 57s. As a result, the holding bar portion 54b generates a pressing force in the H ′ direction around the fulcrum 54c. Therefore, if the HGA 12 is placed on the HGA holding portion 61, the HGA 12 is pressed against the stopper 63 by the pressing force of the holding rod portion 54b that is present in the holding hole 12h that the HGA 12 has, and is held by the HGA holding portion 61. .
When the HGA 12 is taken out from the HGA holding part 61, the operation part 51 is separated from the operation part holding part 57s and pushed in the direction opposite to G, whereby the holding bar part 54b is separated from the HGA 12, and the HGA 12 is taken out.

  When a compression spring is used instead of the tension spring, the position of the spring shown in FIG. 7A may be provided at a line-symmetrical position with respect to the penetrating bar portion 54a.

  Also in Example 3, the same effect as Example 1 can be produced.

(Another embodiment of the HGA exchange mechanism)
As the pressing force generating means, an air cylinder may be used instead of the tension spring shown in FIG. In this case, the main body of the cylinder rod or air cylinder is connected to the through-rod portion 54a, and conversely, the main body of the cylinder or cylinder rod is connected to the operation portion 51. The configuration of the operation means is the same as that of the third embodiment. A pressing force is generated in the direction of arrow G so as to hold the HGA 12 with the cylinder connected to the operating portion.

  In the third embodiment, the tension of the tension spring and the pressing force against the HGA 12 are converted by the rotation of the penetrating bar 54 around the fulcrum 54c. However, instead of providing the fulcrum, the penetrating bar 54a is parallel. A linear guide to be moved may be provided to generate a pressing force.

  Furthermore, in the embodiment described above, the pressing force generating portion 50 is provided on the base surface of the fixed portion 1 of the first fine actuator, but may be provided on the surface at the position indicated by the broken line in FIG. In that case, the holding rod portion 54b is longer than that provided on the base surface.

1: Fixed part 2: Piezo actuator 3: X direction carriage (X direction coarse actuator)
4a, 4b: Hinge 5: Arm (head fixing part)
6: Magnetic head 7: Movable part 8a, 8b: Hinge connection part 9: Second fine movement actuator 10: Y direction carriage (Y direction coarse movement actuator)
12: HGA (head gimbal assembly) 20: magnetic head positioning device 21: surface plate 30: control processing device 41: additional hinge 42: beam part 42a: push beam 42b: pull beam 50, 50A, 50C: pressing force generating part 51 : Operation part 52: Torsion coil spring 53: Exchange mechanism fixing part 53h: Through hole 54: Holding rod 54a: Through rod part 54b: Holding rod part 57; Tension spring 57s: Operating part holding part 60, 60A, 60B, 60C: Head Holding part 61: HGA holding part 62: Holding rod frame 63: Stopper 70, 70A, 70B, 70C: HGA exchange mechanism 81: Leaf spring 82: Operation lever 83: Leaf spring pressing rod 100: First fine movement actuator 200: Magnetic head Inspection device H: Magnetic disk S: Spindle

Claims (10)

A coarse actuator that coarsely moves the magnetic head in two dimensions;
A second fine actuator mounted on the coarse actuator;
A first fine actuator mounted on the second fine actuator;
The first fine actuator includes:
A fixed part comprising a piezo actuator;
A head holding part for holding a head gimbal assembly (HGA) on the tip side, and a movable part for moving the HGA by the piezo actuator;
An HGA exchanging mechanism in which a pressing force generating part having a pressing force generating means for generating a pressing force for holding the HGA and an exchange mechanism fixing part for fixing the pressing generating part are provided in the fixing part;
A magnetic head positioning device comprising: The fixing portion is a tip side of the piezo actuator, and has a hinge provided on the fixing portion on the left and right with respect to a center line in the expansion / contraction direction of the piezo actuator,
The movable part includes two beams each provided with the hinges, the head holding part, and a head fixing part provided on a front end side of the two beams,
The magnetic head positioning device according to claim 1, comprising:   The predetermined position is provided between at least one of the two beams and the head fixing portion, and an additional hinge is provided between the predetermined position and the fixing portion. 3. A magnetic head positioning apparatus according to 2. The pressing force generating unit includes an operating means for releasing the pressing force, and a holding rod for causing the pressing force to act on a holding hole provided on one end side of the HGA.
4. The head holding portion includes an HGA holding portion that is fixed to the head fixing portion and holds the HGA, and a stopper that locks the HGA by the pressing force. A magnetic head positioning apparatus according to claim 1. The pressing force generating means is a torsion coil spring,
The operation means has an operation part fixed to the other end side of the torsion coil spring having one end side fixed to the exchange mechanism fixing part,
The other end side of the holding rod is fixed to the operation unit.
5. The magnetic head positioning apparatus according to claim 4, wherein The pressing force generating means is a torsion coil spring, and has a spring fixing portion that fixes the other end,
The operation means has a spring fixing portion fixed to the other end side of the torsion coil spring, one end side of which is fixed to the exchange mechanism fixing portion, and an operation portion for releasing the pressing force,
The other end of the holding rod is fixed to the spring fixing portion, and the operation portion is provided at the other end provided on the opposite side of the spring fixing portion across the head holding portion.
5. The magnetic head positioning apparatus according to claim 4, wherein The pressing force generating means is a tension spring or a compression spring,
The other end side of the holding rod is fixed to one end side of the tension spring or the compression spring,
The operation means includes an operation portion fixed to the other end side of the tension spring or the compression spring;
An operation unit holding unit fixed to the fixing unit or the exchange mechanism fixing unit and holding the operation unit;
The magnetic head positioning device according to claim 4, comprising: The pressing force generating means is an air cylinder,
The other end of the holding rod is fixed to the cylinder rod or the main body of the air cylinder,
The operation means, on the contrary, an operation unit fixed to the cylinder body or the cylinder rod, an operation unit holding unit fixed to the fixing unit or the exchange mechanism fixing unit, and holding the operation unit,
The magnetic head positioning apparatus according to claim 4, wherein:   4. The magnetic head positioning device according to claim 1, wherein the pressing generation portion is provided on a base surface facing the magnetic disk. A magnetic head positioning device according to any one of claims 1 to 9,
A control processing device that controls the magnetic head positioning device, reads data from a magnetic head provided at the tip of the HGA, and determines whether the magnetic head is good or bad;
A magnetic head inspection apparatus comprising:

Images