Method for reducing height error and out-beat of main shaft motor and thin type main shaft motor

A spindle motor and height error technology, which is applied in the manufacture of motor generators, electrical components, electromechanical devices, etc., can solve the problems of spindle motor height accuracy, heavy work and time-consuming, bearing surface deflection, etc., to save cost and time, eliminate The effect of assembly error and simple method

Inactive Publication Date: 2004-10-13
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, it is easy to rework and time-consuming to solve the above-mentioned deflection problem of the bearing surface and precisely control the height accuracy of the spindle motor at the same time.

Method used

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  • Method for reducing height error and out-beat of main shaft motor and thin type main shaft motor
  • Method for reducing height error and out-beat of main shaft motor and thin type main shaft motor
  • Method for reducing height error and out-beat of main shaft motor and thin type main shaft motor

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Embodiment Construction

[0051] As mentioned above, in terms of a thin spindle motor, usually no separate bearing plate is assembled on the motor, but the surface of the rotor of the motor is directly used as the bearing surface. Therefore, the method for reducing the height error and deflection of the spindle motor provided by the present invention will be described below by taking a thin spindle motor as an example.

[0052] See image 3, the method provided in an embodiment of the present invention includes implementing steps 301-304. First, step 301 is to lay a material layer on a bearing surface of the assembled spindle motor; here, a polymer material layer is laid on the surface of the rotor ( Figure 4 200), for example, a material selected from polycarbonate (Polycarbonate; PC) and polyethylene terephthalate (Polyethylene terephthalate; PET). Next, step 302 is to measure the height from the surface of the polymer material layer to the end of the shaft core of the spindle motor and the deflec...

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Abstract

The invention discloses a method for decreasing the height error and beat of main shaft motor. The main shaft motor has a bearing surface. The method includes following steps: places a material layer on the bearing surface; carries on a surface process to the material layer, until the average beat is less than 10 to the power -2 sq m of the material surface when the main shaft motor rotates, and the distance between the material surface and the shaft core end of the main shaft motor reaches a expected number.

Description

technical field [0001] The present invention mainly relates to a method for improving the manufacturing accuracy of a spindle motor, especially a method for improving the height and run-out of a slim type spindle motor. Background technique [0002] With the development of information, the development of information storage media has attracted much attention, in which the spindle motor plays an important role. A spindle motor is a small motor that is currently the most commonly used driving device for driving information storage media such as optical drives and magnetic disk drives. There are many types of spindle motors, but the main components include a bearing surface, a rotating shaft, a rotor and a stator, wherein the bearing surface can be the surface of an additional bearing plate or the surface of the motor rotor itself, used to load and drive a disk or CD. Driven by the trend of refinement of modern manufacturing technology, the manufacture of these spindle motors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/14
Inventor 徐金柱陈志彰林建杉
Owner DELTA ELECTRONICS INC
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