KR0140001B1 - A pressing & inserting device for precision center controlling of turntable assembly for an optical machine - Google Patents

Abstract

The present invention relates to a precision centering press-fit device of a turntable for an optical device, the main body 70, a support member 80 for supporting the main body 70, and the support member 80, the bottom surface In the press-fitting device consisting of a support member 90 supporting at, the space portion 120a is installed on the bottom surface of the main body 70 and opened on one side to detach the body 40d of the driving motor 40. And a motor fixing member 120 having a guide hole 120c penetrating to the bottom of the space part 120a and having a guide hole 120c through which the rotating shaft 40a of the driving motor 40 enters, and mounted in the motor fixing member 120. An optical sensor 240 for detecting the inclination degree of the driven motor 40, an A / D converter 250 for converting an analog signal detected by the optical sensor 240 into a digital signal, and A / D A microcomputer 260 for comparing and analyzing the digital value transmitted from the converter 250 and a predetermined value, and In order to display the value determined by the com 260 to the outside, including a digital instrument panel 270 installed on the front of the main body 70, to facilitate the press-fit operation of the drive motor, easy to error It is to be calibrated.

Description

Precision centering press-fit device for turntables for optics

1 is a perspective view of a typical turntable assembly.

2 is a cross sectional view of a typical turntable assembly.

3 is a block diagram of a precision centering press-fit device according to the present invention.

Figure 4 is a cross-sectional view of the main portion of the precision centering press-fit device according to the invention.

5 is a perspective view of a motor fixing member according to the present invention.

6 is a block diagram of a precision centering press-fit device according to the present invention.

* Explanation of symbols for main parts of the drawings

A: turntable assembly 10: fixing member

20: pressing member 30: supporting member

40: drive motor 50: disk

60: Spring 70: The body

80: support member 90: support member

100: the first hydraulic cylinder 110: the second hydraulic cylinder

120: motor fixing member 130: light detection switch

140: support 150: support stand

160: limit switch 170: turntable fixing member

180: Compression spring 190: Guide pin

200: guide bearing 210: stopper

220: Tightening screw 230: Operation button

240: light detection sensor 250: A / D converter

260: microcomputer 270: digital instrument board

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turntable for an optical device, and in particular, in press-fitting a rotating shaft of a spindle motor into a fixing member of a turntable assembly, the coupling error of the turntable assembly fixed to the spindle motor is reduced by press-fitting using a precision automatic indentation apparatus, thereby turning the turntable. It relates to a precision centering press-fit device of the turntable for optics that prevents this shaking phenomenon.

In general, optical devices (e.g., CD, LDP, etc.) mount discs (DISC) to which various audio signals or video signals are input, in the optical devices, and rotate the discs using a turntable, thereby inherent in the discs. Is a playback device that allows a user to listen to an audio signal or to view an image signal by playing the data through an optical pickup device.

Looking at the configuration of the turntable assembly (A) in which the disk 50 is placed, Figure 1 is an exploded perspective view of a general turntable assembly (A), Figure 2 is a cross-sectional view of the combined state of the turntable assembly (A), the bottom surface of the circular cross section The indentation hole 10a is formed, the upper surface of the circular body 10c is formed with a recess 10d in the center and the fixing member formed with a plurality of inserting holes 10e around the outer lower end of the circular body 10c ( 10) and a plurality of hook hooks 20a fitted to the insertion hole 10e of the fixing member 10 are formed at the bottom thereof, and are inserted into the outer circumferential surface of the circular body 10c to move up and down. 20, a pressing member 20 inserted into the outer circumferential surface of the circular body 10c and moving up and down, and a bending portion attached to the outer circumferential end of the fixing member 10 by molding and bent upwards ( 30a) is formed so that the support member 30, the disk 50 is placed, and the high Spring 60, which is installed in the bottom of the lower end of the bottom surface of the government member 10 and the pressing member 20 and provides an elastic force to the pressing member 20, and the press-fit of the fixing member 10 The rotating shaft 40a is pressed into the ball 10a, and the spindle motor 40 rotates the turntable assembly A on which the disk 50 is placed.

In addition, an inserting groove 20b and a settling groove 10b are formed on the bottom surface of the pressing member 20 and the upper surface of the fixing member 10 so that the spring 60 is accurately coupled without flow.

In addition, the support member 30 is a metal material manufactured by press working, and the fixing member 10 is a plastic material produced by injection molding, and the support member 30 is out-molded on the outer circumferential surface of the fixing member 10. It is composed by (OUTSERT MOLDING).

As described above, the rotary shaft 40a of the driving motor 40 is forcibly pressed into the press-in hole 10a of the turntable assembly A fixing member 10. The press-fit device of the conventional turntable assembly A is assembled. Jig (jig) is set to hold the outer peripheral surface of the drive motor 40, a magnetic chuck (electrical chuck) for holding the support member 30 of the turntable assembly (A) is mounted on the top.

In this state, the jig and the magnetic chuck are moved up and down with each other, and the rotary shaft 40a of the driving motor 40 fixed thereto is forcibly pressed into the indentation hole 10a of the turntable A to be assembled.

However, in the related art, since the jig of the drive motor 40 is fixed to the outer part of the drive motor 40 instead of the precise part of the drive motor 40, the center of the drive motor 40 may not be properly held, which may cause an error. ) Is fixed using a magnetic cloth, so that the press-fit hole 10a of the fixing member 10, which is the reference of the vibration of the turntable assembly A, cannot be squeezed, so that the vibration of the turntable assembly A after assembly is There has been a problem such that the sound quality reproduction power of the disk is reduced.

The present invention has been devised in view of this point, and compares and analyzes the precision mounted by the light sensing sensor in the state in which the drive motor is mounted in the motor fixing member and displays it on the digital instrument panel through a microcomputer to precisely correct the mounting of the drive motor. After that, the driving motor is fixed with a hydraulic cylinder and press-fitted into the turntable assembly to minimize the error generated during the press-fitting process.

This object is a press-fitting device comprising a main body having various devices embedded therein, a supporting member for supporting the main body, and a supporting member for supporting the supporting member on the bottom surface, which is installed at the bottom of the main body, the body of the driving motor. A space part is formed on one side so that the space is detachable, and a motor fixing member having a guide hole penetrating downward and a rotating shaft of the driving motor entering the bottom surface of the space part, and an inclination degree of the driving motor mounted in the motor fixing member. Optical sensor for detecting the sensor, a converter, a microcomputer to compare the digital value transmitted from the A / D converter with a preset value and determine it, and a front part of the main body to display the value determined by the microcomputer to the outside. Presses the bottom of the digital instrument panel and the rear projection of the drive motor mounted in the space of the motor fixing member A first hydraulic cylinder for fixing the same motor, a second hydraulic cylinder for moving the motor fixing member equipped with the driving motor up and down, and a pedestal provided on the supporting member and having a hollow section having a circular cross section at the center thereof. And a turntable fixing member installed at the hollow part of the pedestal to fix the turntable assembly, and a fastening fastening screw fixed on the pedestal by a fastening screw, and controlling a downward movement amount of the motor fixing member according to the downward movement of the second hydraulic cylinder. A switch is achieved by providing a precision centering press-fit device of a turntable for optics consisting of a support mounted on an upper surface.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figures 3 to 6, the configuration of the present invention is a main body 70, a variety of devices built-in, a support member 80 for supporting the body 70, and the support member 80 In the press-fitting device consisting of a support member 90 for supporting the bottom from the bottom surface, the space portion is installed on the bottom of the main body 70, the one side is opened so that the body (40d) of the drive motor 40 is removable ( And a motor fixing member 120 having a guide hole 120c through which a lower portion of the space portion 120a penetrates downward and a rotation shaft 40a of the driving motor 40 enters, and the motor fixing member 120a. An optical sensor 240 for detecting an inclination of the driving motor 40 mounted in the 120 and an A / D converter 250 for converting an analog signal detected by the optical sensor 240 into a digital signal. ) And the microcomputer 260 for comparing and determining the digital value transmitted from the A / D converter 250 and a predetermined value. In order to display the numerical value determined by the microcomputer 260 to the outside, the digital instrument panel 270 installed in the front portion of the main body 70 and the driving motor mounted in the space portion 120a of the motor fixing member 120 ( The first hydraulic cylinder 150 for fixing the driving motor 40 by press-fitting the rear protrusion 40b of the lower portion 40 and the motor fixing member 120 on which the driving motor 40 is mounted, is moved up and down. A second hydraulic cylinder 110 to be moved, a pedestal 140 installed on the support member 90 and having a hollow portion 140a having a circular cross section at a central portion thereof, and a hollow portion 140a of the pedestal 140. And the turntable fixing member 170 to which the turntable assembly A is fixed and fastened by the fastening screw 220 on the pedestal 140 and moving downward in accordance with the downward movement of the second hydraulic cylinder 110. Limit switch 160 for controlling the amount of downward movement of the fixing member 120 is composed of a support 150 installed on the upper surface It is.

In addition, the turntable fixing member 170 has an annular protrusion 170b fitted to the fixing member 10 of the turntable assembly A, and a guide slot 170c penetrated up and down in the center thereof. The guide bearing 200 is fitted to the outer circumferential portion of the guide slot 170c, and a space portion 170a having a large diameter is formed at the bottom of the guide slot 170c.

In addition, the guide slot (170c) is inserted into the guide pin 190 to move up and down, is in contact with the bottom surface of the guide pin 190 is configured so that the compression spring 180 is installed in the space (170a). .

On the other hand, the stopper 210 for fixing the turntable fixing member 170 to the bottom of the pedestal 140 is configured to be fastened by a fixing screw 210a.

In addition, an optical sensing switch 130 for detecting a mounting state of the driving motor 40 is installed at the space portion 120a of the motor fixing member 120, and the space portion 120a of the motor fixing member 120 is provided. ) And the guide hole 120c is formed with a stepped portion 140b in which the front jig 10c of the driving motor 40 is mounted.

Hereinafter, the operation and effects of the present invention will be described.

In order to press-fit the rotating shaft 40a of the drive motor 40 to the fixing member 10 of the turntable assembly A, the annular protrusion 170b of the turntable fixing member 170 is first moved to the fixing member 10 of the turntable assembly A. ), The center of the turntable assembly A is accurately held in the state where the end portion of the guide plate 190 receiving the elasticity of the compression spring 180 enters the press-in hole 10a of the fixing member 10 when installed in the Will be in.

When the driving motor 40 is hung from the side space part in the motor fixing member 120, when the driving motor 40 is incorrectly jagged in the motor fixing member 120, the center of the driving motor 40 is not properly aligned. When the projected light senses an analog displacement value and transmits it to the A / D converter 250, the A / D converter 250 converts the analog signal into a digital signal, and the converted signal is transferred to the microcomputer 260. Delivered.

In addition, the value set by the microcomputer 260 and the value transmitted from the A / D converter 260 are compared with each other, so that the driving motor 40 is tilted in the motor fixing member 120 to the front of the main body 70. The digital instrument panel 270 attached to it is marked by numbers so that the operator can see.

At this time, if the numerical value is less than the reference value to proceed to the next operation, if there are many errors to re-center the drive motor 40 to adjust the center so that the error is below the reference value.

As such, when the driving motor 40 is mounted in the motor fixing member 120 and the operation button 230 mounted to the front portion of the main body 70 is pressed, the light sensing switch 130 is driven to the driving motor 40. By detecting the reflection of the light reflected by the body 40d of the driving motor 40 is recognized as being mounted on the motor fixing member 120 while lowering the first hydraulic cylinder 100 down the back of the driving motor 40 By pressing the protrusion part 40b, a constant pressure is applied so that the front jig part 40c of the drive motor 40 is precisely jagged to the step 120b.

In addition, while the second hydraulic cylinder 110 is continuously operated, the motor fixing member 120 is operated downward, and the rotary shaft 40a of the driving motor 40 protruding downward is the indentation hole of the fixing member 10. It is forcibly pressed into 10a, and the guide pin 190 inserted in the press-fit hole 10a to hold the center of the fixing member 10 is compressed to the bottom while compressing the compression spring 190. The rotation shaft 40a of the drive motor 40 is completely press-fitted into the fixing member 10 press-fit hole 10a of the turntable assembly A.

As such, while the rotary shaft 40a of the driving motor 40 is completely press-fitted, the bottom surface of the motor fixing member 120 presses the limit switch 160 installed on the support 150 to lower the motor fixing member 120. The second hydraulic cylinder 110 is returned to its original state as the movement is immediately stopped at the proper position.

Then, the first hydraulic cylinder 100 is also raised to its original position, and the drive motor 40 to which the turntable assembly A is press-fitted may be taken out from the inside of the motor fixing member 120.

On the other hand, if you want to press the other turntable assembly (A) into the drive motor 40 is achieved by continuously repeating the above operation.

In addition, the guide bearing 200 for smoothly inducing the up and down movement of the guide pin 190 is suitable within a range that does not have much center error among various types of bearings such as lubricated bearings or ball bearings that are commonly used. Choose it and use it.

Therefore, unlike the conventional indentation apparatus, the indentation apparatus according to the present invention not only accurately grips the front jig part 40c of the driving motor 40 which is a relatively precise portion, but also the turntable 120b of the motor driving member 120 as well as the turntable. The assembly (A) is a very useful invention to minimize the occurrence of errors by accurately holding the indentation hole (10a) of the fixing member 10 with the guide pin 190 to move up and down by the compression spring (100). .

In addition, by converting the central position of the drive motor 40 jig in the motor fixing member 120 into the digital value of the analog amount projected from the optical sensor 240 to the digital value in the A / D converter 250, the microcomputer 260 The inventors also have the advantage of allowing the operator to easily determine the amount of error of the driving motor 40 by performing a comparative analysis and displaying the digital instrument panel 270 so as to efficiently advance the press-fitting operation of the driving motor 40 to improve workability. will be.

Claims (6)

In the press-fitting device composed of a main body 70, which is equipped with various devices, a support member 80 for supporting the main body 70, and a support member 90 for supporting the support member 80 from the bottom surface, It is installed on the bottom of the main body 70, the space portion 120a of which one side is opened to be detachable to form the body 40d of the drive motor 40 is formed, the bottom surface of the space portion 120a is penetrated downward Detecting the inclination degree of the motor fixing member 120 and the driving motor 40 mounted in the motor fixing member 120 is formed with a guide hole (120c) to enter the rotary shaft 40a of the drive motor 40 An optical sensor 240, an A / D converter 250 for converting the analog signal sensed by the optical sensor 240 into a digital signal, and the digital value transmitted from the A / D converter 250 in advance The microcomputer 260 which compares and analyzes the input set numerical value and determines the numerical value determined by the microcomputer 260 to the outside. To press the digital instrument panel 270 installed in the front portion of the main body 70 and the rear projection portion 40b of the drive motor 40 mounted in the space portion 120a of the motor fixing member 120, A first hydraulic cylinder 150 for fixing the driving motor 40, a second hydraulic cylinder 110 for moving the motor fixing member 120 equipped with the driving motor 40 up and down, and the support The turntable is installed on the member 90, the pedestal 140 is formed in the hollow portion 140a of the circular cross section at the center, and the turntable is installed in the hollow portion 140a of the pedestal 140 is fixed turntable assembly (A) Limiting switch 170 and the limit switch for controlling the downward movement amount of the motor fixing member 120 in accordance with the downward movement of the second hydraulic cylinder 110 is fastened and fixed by the fastening screw 220 on the pedestal 140 Still life of the turntable for an optical device, characterized in that the 160 is composed of a support 150 installed on the upper surface Aligning the press device. According to claim 1, The turntable fixing member 170 has an annular protrusion (170b) is formed in the upper portion is fitted to the fixing member 10 of the turntable assembly (A), the guide slot 170c penetrated up and down in the center ) Is formed, the guide bearing 200 is fitted to the outer circumferential portion of the guide slot 170c, the turntable for an optical device, characterized in that the bottom portion of the guide slot 170c is formed with a large diameter portion 170a Precision centering indentation device. According to claim 1, The guide slot 170c is inserted into the guide pin 190 to move up and down, contact with the bottom surface of the guide pin 190, the compression spring 180 in the space portion (170a) Precision centering press-fit device of the turntable for optics, characterized in that it is configured to be installed. According to claim 1, wherein the stopper 210 for fixing the turntable fixing member 170 on the bottom surface of the pedestal 140 is configured to be fastened by the fixing screw 210a, the precision center adjustment of the turntable for optics Indentation device. According to claim 1, wherein the optical sensor switch 130 for detecting the mounting state of the drive motor 40 is installed on the side of the space portion (120a) of the motor fixing member 120 of the optical table turntable Precision centering indentation device. According to claim 1, Between the space portion (120a) and the guide hole (120c) of the motor fixing member 120 is characterized in that the stepped portion 12b on which the front jig portion 40c of the drive motor 40 is mounted Precision centering press-fit device for turntables for optical instruments.