JPS6113948Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to an improvement of a testing device for checking the accuracy of a spindle used in a magnetic disk device such as a disk pack.

2. Description of the Related Art For example, a device for measuring the surface runout and shaft runout of a spindle used in a disk pack, etc. is equipped with a spindle support member that rotatably supports only the spindle, and a drive pulley that is rotationally driven by a motor. A device is created in which a belt is stretched between a drive pulley and a pulley provided at one end of a spindle set on a support member, and the drive pulley is rotationally driven to rotate the spindle at a predetermined number of rotations.

To test the surface runout and shaft runout of the spindle, first, the spindle is set on the spindle support member of the above-mentioned apparatus, and a belt is passed between the pulley provided at one end of the spindle and the drive pulley. After that, a dynamic test method was used in which the spindle was rotated at the same rotation speed as during operation and surface runout, shaft runout, etc. were measured using a non-contact method.

At this time, the belt was manually placed around the drive pulley and the pulley provided at one end of the spindle, which required time and effort, and the belt hanging part was often in a difficult-to-reach area, making the work difficult. Moreover, when the belt was hooked, fingers could get caught between the belt and the pulley, posing a safety problem.

In other words, a spindle used for disk packs and the like has a pulley at one end and is driven to rotate by a belt stretched between the drive pulley and the spindle. The pulley is located below the testing device or is housed inside the testing device, which poses a problem in that the task of passing the belt around becomes extremely troublesome.

Purpose of the invention The present invention is intended to solve the above-mentioned conventional problems, and aims to provide a spindle testing device that can efficiently and safely carry out belt hanging work.

Structure of the invention The object of this invention is to provide a spindle support part that rotatably supports a spindle having a pulley at one end, a drive pulley that is rotationally driven, a driven pulley that rotates as the drive pulley rotates, and a drive pulley that rotates as the drive pulley rotates. a belt that is stretched between a driving pulley and the driven pulley and transmits the rotational force of the driving pulley to the driven pulley;
The spindle testing device is equipped with a belt and transmits power to the spindle pulley to inspect surface runout and shaft runout of the spindle, which supports the driven pulley and supports the driven pulley. This is achieved by providing a spindle testing device comprising positioning means for positioning the belt in a test position in which it engages the spindle pulley and in a retracted position in which the belt does not engage the spindle pulley.

In other words, the above-mentioned spindle testing device positions the belt to be stretched around the spindle at a test position where it engages with the spindle pulley and a retracted position where it does not engage, by moving the driven pulley around which the belt is stretched. It is configured as follows.

Therefore, when inspecting the surface runout or shaft runout of the spindle, the operator sets the spindle in the testing device and then operates the positioning means to engage the belt with the spindle pulley. It is only necessary to operate the means to disengage the belt from the spindle pulley and then remove the spindle from the test apparatus.

Therefore, the operator does not need to attach or remove the belt from the driving pulley, driven pulley, and spindle pulley each time a single spindle is tested. There is no need to get your fingers caught between the belt and the pulley during hanging work.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic perspective view of the main parts of a spindle testing device according to the present invention, and FIG. 2 is an explanatory diagram of a positioning operation for positioning a driven pulley at a retracted position and a test position.

In the figure, 1 is a drive pulley, and motor 5
It is directly connected to the output shaft of the motor 5, and as the motor 5 rotates, it rotates a belt 11 that is stretched between it and a driven pulley 2, which will be described later. A tension pulley 3 rotates by the rotational force of the drive pulley 1 transmitted by a belt 11 stretched between the drive pulley 1 and the driven pulley 2. 4 is a spindle support part, which constitutes a part of the test apparatus and rotatably supports the spindle 12 to be tested.

Further, the driven pulley 2 is rotatably supported by a support member 6 via a fixed shaft 7. The support member 6 is fixed to a shaft 9 which is rotatably supported by a bracket 8. The shaft 9 is connected to the output shaft of a drive device 10 (high rotor = device that operates by air pressure, hydraulic pressure, etc. and rotates the output shaft by a predetermined angle, for example, 90 degrees; manufactured by Kuroda Seiko Co., Ltd.) that rotates the shaft 9 by a predetermined angle. has been done. The drive device 10 drives the support member 6 via the shaft 9, and positions the support member 6 at the retracted position shown in FIG. 1 and at the test position rotated by a predetermined angle in the direction of the arrow from this position.

The operation of the configuration described above will be explained.

Now, when the spindle 12 is set on the spindle support part 4 with the support member 6 positioned at the retracted position shown in FIG. It is positioned between the circular arcs formed by the belt 11.

In this state, when the drive device 10 is operated to swing the support member 6 by a predetermined angle in the direction of the arrow as shown in FIG. 2 and positioned at the test position, the driven pulley 2
also rotates by the same angle.

Therefore, at this time, the belt 11 engages with the tension pulley 3, is applied with tension by the tension pulley 3, and is pressed against the pulley 13 provided on the spindle 12.

That is, the belt 11 relative to the spindle 12
The crossing work will be carried out.

In this state, the motor 5 is operated and the belt 11
Transmit power to the pulley 13 via the spindle 12 to rotate the spindle 12, and use a measuring instrument (not shown) to measure the
The surface runout and shaft runout of the spindle 12 are measured.

In this way, the belt can be threaded onto the spindle simply by swinging the support member 6, which simplifies the belt threading work and eliminates the safety issues associated with manually threading the belt as in the past. Problems can also be solved.

Note that the tension pulley 3 can be omitted if the swing center position of the support member 6 is set appropriately.

Effects As explained above, according to the present invention, the belt is attached to the spindle by setting the spindle and moving the support member to the test position, which simplifies the belt attaching work. , it becomes possible to improve safety.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of essential parts showing an embodiment of the spindle testing device according to the present invention, and FIG. 2 is an explanatory diagram of a positioning operation for positioning the driven pulley at the retracted position and the test position. In the figure, 1 is a drive pulley, 2 is a driven pulley, 4 is a spindle support part, 5 is a motor, 6 is a support member, 8 is a bracket, 10 is a drive device, 11
is a belt, 12 is a spindle, and 13 is a pulley.

Claims (1)

[Scope of utility model registration request] A spindle support part that rotatably supports a spindle having a pulley at one end, a drive pulley that is rotationally driven, a driven pulley that rotates as the drive pulley rotates, and a spindle support part that rotatably supports a spindle having a pulley at one end; and a belt that transmits the rotational force of the drive pulley to the driven pulley, and transmits power to the spindle pulley via the belt to inspect surface runout and shaft runout of the spindle. The apparatus includes positioning means for supporting the driven pulley and positioning the driven pulley in a test position where the belt engages the spindle pulley and a retracted position where the belt does not engage the spindle pulley. A spindle testing device comprising: