JPH0334126B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a floppy disk drive device (hereinafter referred to as
This relates to a recording device for manufacturing floppy disks for calibration, which is indispensable in the manufacturing, inspection, and repair of FDDs.

[Prior art and its problems]

As is well known, FDDs write and read large amounts of information onto and from floppy disks (hereinafter referred to as FDs) with micron-order accuracy, so the mounting position of the R/W head at the origin has to be micron-order accurate. required.

When installing, inspecting, or replacing a R/W head that requires high precision, it is cumbersome to use large and difficult-to-handle inspection instruments such as a tool microscope each time, so it is usually necessary to specify the origin position. The mounting position of the R/W head is inspected using a calibration FD that records waveform signals.

In order to obtain this calibration FD, the present invention is a recording device that applies position marks to a normal FD and uses it as a calibration FD.

There are two types of FDDs: single-sided head type and double-sided head type.The calibration FD manufacturing equipment for single-sided head type FDDs, that is, the recording device that records the position marks on one side, is designed to hold the FD case and drive the FD. A recording device is used which consists of a recording head fixed at a predetermined position and a recording head fixed at a predetermined position.

On the other hand, as a manufacturing device for a calibration FD for a double-sided head type FDD, a recording device is used, which consists of a device that grips and drives the FD case, and a recording head that is movable in the radial direction of the FD. FD for double-sided calibration using this double-sided recording device
The method for making a FD is as shown in Figure 1, which is the same shape on both sides of a commonly used FD, so first set the recording head at a predetermined position and record the S0 position. Next, the FD is turned over and the recording head is moved toward the FD sensor (generally by 8 tracks) to record at the S1 position.

The S0 and S1 positions referred to herein refer to the write/read positions of the R/W heads A and B, which are provided opposite both sides of the FD in a double-sided FDD, as shown in FIG.

However, recently, as shown in Figure 3, a new FD has been put on the market, with the front side having the shape shown in figure a and the back side having the shape shown in figure b, where the front and back shapes are not the same. It was only possible to make a calibration FD for the original, and it was not possible to put a double-sided recording device into practical use.

The reason for this is that if the new FD shown in Figure 3 is turned over like the conventional device to record the S1 position, it will no longer be possible to drive the FD, so the device is constrained to be able to record without having to turn it over, and the tool Using a microscope, etc., look at the center of the FD from above, i.e.
This is because it was not possible to overcome the constraint that the structure must be able to measure the absolute dimensions between the center of the rotary disk that drives the FD and the center of the R/W gap of the position mark recording head.

[Problem to be solved by the invention]

Therefore, the present invention is designed not only for conventional single-sided and double-sided calibration FDs, but also for single-sided and double-sided calibration FDs for FDs that can only be driven from one side as shown in FIG. The present invention aims to provide a position mark recording device that can provide FD.

[Means to solve the problem]

The present invention has been made to solve the above problems, and includes a device for holding an FD case and driving the FD, a moving table movable toward the center of the FD, and a moving table movable toward the center of the FD. A rotating shaft provided on a moving table, a position mark recording magnetic head attached to the rotating shaft, means for rotating the rotating shaft, and fixing the rotating shaft at a position rotated by 180 degrees. 1. A recording device for manufacturing a calibration FD, characterized in that the recording device includes a means for producing a calibration FD, and a movement position detector for the movement table.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described based on the drawings.

FIG. 4 is a plan view of the embodiment of the present invention, FIG. 5 is a partially cutaway front view of the same, and FIG. 6 is a right side view of the same.
1 is a drive device that holds the FD case 2 and drives the FD, 3 is a moving table that moves on the bed 5 toward the center of the FD by rotating the feed handle 4, and 6 is a rotating shaft 6a. Mobile table 3
8 is a rotary handle for driving the rotation shaft 6a, and 9 is a position detection sensor connected to the end 10a of the movable rod 10 to the movable table 3.

The device 1 for holding and driving the FD holds the FD case 2 in a predetermined position with FD pressers 11 and 11' provided at the front and rear as shown in FIG.
The structure is such that the FD is driven by a pin 14 on a rotary disk 13 driven by a motor 12.
In the figure, 15 is a compression spring.

Note that the pin 14 is the through hole 1 provided on the bottom surface of the FD.
6 is fitted.

Further, a support arm 18 having a restraining pad 17 at its tip is pivotally attached to the support arm 6, and a restraining spring 19 is suspended between the support arms 6 and 18. Note that 20 is a restraining force adjustment knob for the restraining spring 19.

A stopper 21 is provided integrally with the rotating shaft 6a, and is configured to be fixed at a position where the rotating shaft 6a is rotated by 180 degrees by clamps 22 or 23 provided at the front and rear.

Note that the clamps 22 and 23 are connected to the shaft 22, respectively.
When clamping the stopper 21, tighten the setscrews 22b and 23b threaded onto the upper end, and clamp the stopper 21 with the adjusted support screws 22c and 23c. It's becoming like that.

The position detection sensor 9 detects the FD of the magnetic head 7 attached to the movable table 3 via the support arm 6.
An electric signal proportional to the distance from the object is sent out, and the electric signal is sent to a display 24 as shown in FIG. 7, so that the position is digitally displayed.

Next, to explain how to use it, first open the support arm 18 provided with the deterrent pad 17 upwards or remove it so that the position of the magnetic head 7 can be confirmed from above, and then use the feed handle. S0 according to the FD size by operating 4.
The magnetic head 7 is sent to the position (see FIG. 2), the absolute distance L is measured from above using a known tool microscope, the digital display value on the display 24 at that time is memorized, and the above-mentioned support arm 18 is Correct the opening or attach it to the normal state shown in Figure 5.

When recording the S0 position mark on the FD, hold the FD case 2 in a predetermined position using the FD pressers 11 and 11', operate the feed handle 4, and watch the digital display on the display 24. While moving the moving table 3, the moving table 3 is stopped when the stored digital display value is reached.

Next, the motor 12 is started and a switch of a recording signal sending device (not shown) is turned on to record the S0 position mark.

After recording the S0 position mark, rotate the feed handle 4 in the opposite direction to move the moving table 3 to the right until the support arm 6 comes off from the FD case 2 as shown in FIG.
Loosen the clamp 22, remove the rotating handle 8
Rotate the rotation axis 6a by 180 degrees, and then turn the clamp 2
3 on the stopper 21, and turn and tighten the holding screw 23b to fix the stopper 21.

Next, operate the feed handle 4 again to move the moving table 3 to the left and display the display 24.
ΔL than when recording the S0 position mark.
The magnetic head 7 is further moved toward the center of the FD, and the S1 position mark is recorded in the same manner as when recording the S0 position mark.

The above describes the operations for creating a double-sided calibration FD, but this device can also be used to create a single-sided calibration FD.
Of course, it is possible to create

Furthermore, this embodiment is a recording device for manufacturing a calibration FD whose front and back sides are not the same shape as shown in FIG. can also be applied.

In the embodiment described above, the position detection center 9 is arranged side by side with the drive device 1, but as shown in FIG. Of course, there are design changes such as placing the

〔Effect of the invention〕

As described above, according to the present invention, it is possible to manufacture a single-sided drive type calibration FD as shown in FIG.
This type of double-sided type, whose practical application is currently stalled.
As an invention that realizes the practical application of FDD, its industrial value is extremely large.

[Brief explanation of drawings]

Figure 1 is a plan view of the old type FD, Figure 2 is an explanatory diagram of the S0 and S1 positions in a double-sided FDD, Figure 3 is the front and back views of the new type FD, and Figure 4 is the implementation of the present invention. FIG. 5 is a partially cutaway front view of the example, FIG. 6 is a right side view of the same, FIG. 7 is a front view of the display, and FIG. 8 is a side view of a different embodiment. 1... Drive device, 2... FD case, 3...
Moving table, 4...Feeding handle, 5...Bed, 6 and 18...Support arm, 7...Magnetic head for position mark recording, 8...Rotating handle, 9...
...Position detection sensor, 10...Movement rod, 1
1, 11'...FD presser, 12...Motor, 13...
... Rotating disk, 14... Pin, 15... Repression spring, 1
6... Through hole, 17... Deterrent pad, 19... Deterrent spring, 20... Deterrent force adjustment knob, 21... Stopper, 22 and 23... Clamp.

Claims (1)

[Claims] 1. A device for holding the case of the floppy disk and driving the floppy disk, a moving table movable toward the center of the floppy disk, a rotating shaft provided on the moving table parallel to the surface of the floppy disk, and a device attached to the rotating shaft. a magnetic head for recording position marks, means for rotating the rotating shaft, means for fixing the rotating shaft at a position rotated by 180 degrees, and a movement position detector for the moving table. A recording device for manufacturing a calibration floppy disk, characterized in that: