KR102326725B1 - Belt type optical system polishing device that combines eccentricity control and braking function - Google Patents

Abstract

The present invention relates to an apparatus for automatically grinding optical systems such as reflectors, lenses, and prisms, comprising: a main body (10); a housing (20); a spindle (30); an eccentric holder (40); a rotation/revolution motor (50, 55); a belt-type grinding mission (60); a control means; and a braking means. Therefore, the present invention improves the grinding mission that transmits the power of a rotating motor and a driving motor to the spindle in a belt method such that the number of parts is small compared to a conventional complex planetary gear system, thereby capable of reducing the weight and volume.

Description

Belt type optical system polishing device that combines eccentricity control and braking function

The present invention relates to an apparatus for automatically polishing an optical system such as a reflector, a lens, and a prism, and more particularly, by improving the polishing mission that transmits the power of the rotating motor and the driving motor to the spindle in a belt method, A belt with eccentricity control and braking function that can reduce the number of parts compared to the complex planetary gear method, reducing the weight and volume, as well as minimizing operating noise and vibration to prevent optical system processing errors caused by mechanical defects and vibrations. It relates to an anticorrosive optical system polishing apparatus.

Recently, the demand for precision large-scale optical systems is increasing in the field of astronomical observation and the military-purpose satellite industry. In the optical system, the greater the diameter of the reflector, the better the light-collecting power and resolution can be obtained.

Among the existing large-scale reflector manufacturing processes, the most important grinding and processing processes were done manually by skilled workers, so it took a long time and had disadvantages in mass production. In order to overcome the limitations of manual polishing, a technology for automating the polishing process through computer control has been developed.

That is, as disclosed in Korean Patent No. 10-1913496, a device having a structure capable of simultaneously rotating and revolving in order to process various types of optical system polishing surfaces has been proposed.

However, as the proposed polishing device adopts a planetary gear method with a complicated transmission structure that transmits rotation and revolution to the spindle, the number of parts is relatively large, resulting in increased weight and volume, resulting in increased manufacturing cost.

In addition, as a plurality of gears have a meshed structure, operating noise and vibration are significantly generated, as well as a high rate of mechanical defects, and frequent maintenance is required because the vibrations generate machining errors during optical surface processing. there is

In addition, in order to change the eccentricity of the spindle, the proposed polishing device has to manually adjust the eccentricity control housing before polishing. there is

In addition, the proposed polishing apparatus has a problem that, when a strong external force is transmitted to the spindle due to friction or interference with the optical system, the spindle moves eccentrically in the transmission direction of the external force, thereby increasing the polishing error rate of the optical system and causing defects.

Republic of Korea Patent Publication No. 10-1913496 (Title of the invention: Polishing tool apparatus and operating method for optical polishing automation process)

The present invention has been proposed to solve the above problems, and by improving the grinding mission that transmits the power of the rotating motor and the driving motor to the spindle in a belt method, the number of parts is reduced compared to the conventional complex planetary gear method, thereby reducing the weight and volume It is an object of the present invention to provide a belt-type optical polishing apparatus that has both eccentricity control and braking functions that can prevent mechanical defects by minimizing operating noise and vibration.

In addition, the present invention realizes the control means for changing the eccentric distance of the spindle to be operated automatically, so that the idle position of the spindle can be adjusted in real time during the polishing operation, so that the eccentricity control and braking function that can shorten the polishing time are combined. An object of the present invention is to provide a belt-type optical polishing apparatus.

In addition, the present invention has a braking means for automatically controlling the eccentric movement of the spindle, so that even if a strong external force is transmitted to the spindle due to friction or interference with the optical system during polishing, the spindle is stably fixed at the set eccentric position. An object of the present invention is to provide a belt-type optical polishing apparatus that has both eccentricity control and braking functions that can improve overall polishing precision.

The present invention relates to an apparatus for automatically polishing an optical system such as a reflector, a lens, and a prism, comprising: a body having a size to accommodate the optical system and movably supporting the optical system in a setting direction; a housing mounted on the upper end of the main body to face the optical system and sized to embrace the optical system; a spindle mounted to be exposed at the lower end of the housing and to which a tool for polishing the optical system is connected; an eccentric holder which is rotatably mounted to the center of the lower end of the housing and holds the spindle to be rotated and eccentrically movable; a rotation/revolution motor which is separately mounted on the upper center and rear of the housing, respectively, and adds rotation power and rotation power of the spindle; a belt-type grinding mission mounted inside the housing and connected to the rotation/revolution motor and the eccentric holder to simultaneously transmit rotation and revolution power to the spindle; an adjusting means mounted on the lower end of the eccentric holder and adjusting the eccentric distance of the spindle; and a braking means mounted on the lower end of the eccentric holder and controlling the eccentric movement of the spindle.

At this time, the main body according to the present invention has a size for accommodating the optical system, the table is installed movably from the floor; a Y-axis stage mounted on the top of the table and moving the optical system back and forth; an X-axis stage mounted on the upper end of the Y-axis stage and moving the optical system left and right; a polishing bed mounted on the upper end of the X-axis stage and fixedly supporting the optical system; a column mounted on the rear of the upper end of the table and supporting the housing at a predetermined height; a Z-axis stage mounted on the upper front surface of the pillar, mounted on the housing, and moved up and down; and a control panel disposed on the right side of the pillar and outputting an operation signal according to a set sequence.

In addition, the housing according to the present invention, a cylindrical case in which the center is vertically mounted in front of the Z-axis stage; an upper plate mounted on the upper end of the case and fixing the output shafts of the rotation motor and the idle motor to pass through the lower portion; It is mounted on the lower end of the case, the lower plate for rotatably supporting the eccentric holder; characterized in that it is composed of.

In addition, the eccentric holder according to the present invention is rotatably interposed in the center of the lower plate, the rotating disk connected to the grinding mission; a holder bearing that is slidably mounted on the upper end of the rotating disk and holds the spindle to be rotatable; It is characterized in that it is composed of; a holder bracket that is slidably mounted on the lower end of the rotating disk and transmits the eccentric driving force of the adjusting means and the braking force of the braking means to the spindle.

In addition, the rotating disk according to the present invention, a rectangular spindle slot that is horizontally penetrated from the inside to the outside to eccentrically insert the spindle; It is characterized in that a rectangular connection slot is formed on both sides adjacent to the spindle slot in the same direction and length to guide the holder bearing and the holder bracket to be coupled to each other.

In addition, the grinding mission according to the present invention, is mounted rotatably around the rotation motor at the lower end of the upper plate, the disk-type rotor gear engaged with the output shaft of the revolution motor on the outer surface; a driving pulley positioned at the center of the lower portion of the rotor gear and mounted on the output shaft of the rotating motor protruding from the lower portion of the rotor gear; a driven pulley mounted outside the lower portion of the rotor gear and revolving around a driving pulley according to the rotation of the rotor gear; a timing belt connected to the driving pulley and the driven pulley to rotate in a setting direction; It is characterized in that it is composed of; a spindle pulley that is inserted and mounted on the upper end of the spindle, is inserted between the timing belt and rotates while eccentrically moving in/outside of the rotor gear by an adjusting means.

In addition, the adjusting means according to the present invention includes a control motor fixedly mounted on one side of the holder bracket and engaged with the bottom surface of the rotating disk to apply an eccentric driving force of the spindle, and the braking means includes the holder It is characterized in that it consists of; a braking actuator fixedly mounted on the other side of the bracket and interlocking with the bottom surface of the rotating disk to control the eccentric movement of the spindle.

In addition, the braking actuator according to the present invention, a braking electromagnet for magnetically adsorbing the bottom surface of the rotating disk; or a brake cylinder for pressing with pneumatic or screw motor; characterized in that it is composed of.

In addition, the brake cylinder according to the present invention, a soft rubber pad attached to the upper end of the piston that is selectively pressed into close contact with the bottom surface of the rotating disk or knurled on the upper end of the piston to increase friction; characterized in that it is configured.

In addition, the rotating disk according to the present invention, a rack penetrating or recessed in the same direction and length at a position adjacent to the one side connection slot to engage the pinion of the control motor to induce eccentric movement; Concavo-convex protrusions or depressions protruding or recessed in the same direction and length at a position adjacent to the other connection slot to induce engagement with the piston of the braking cylinder; characterized in that it is further formed.

First, the present invention improves the grinding mission, which transmits the power of the rotating motor and the driving motor to the spindle, in a belt method, thereby reducing the number of parts compared to the conventional complex planetary gear method, thereby reducing the weight and volume, as well as operating noise and vibration. This has the effect of preventing mechanical defects by minimizing the

Second, the present invention has the effect of shortening the polishing time as the revolving position of the spindle can be adjusted in real time even during the polishing operation by implementing the adjusting means for changing the eccentric distance of the spindle to be automatically operated.

Third, the present invention has a braking means for automatically controlling the eccentric movement of the spindle, so that even if a strong external force is transmitted to the spindle due to friction or interference with the optical system during polishing, the spindle is stably fixed at the set eccentric position. It has the effect of improving the overall polishing precision.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a front view of a polishing apparatus according to the present invention as a whole.
2 is a side view of the polishing apparatus according to the present invention as a whole.
3 is a perspective view showing a main part of the polishing apparatus according to the present invention.
4 is a perspective view showing the main part of the polishing apparatus according to the present invention in isolation.
5 and 6 are perspective views showing enlarged main parts of the polishing apparatus according to the present invention.
7 and 8 are cross-sectional views showing the eccentric movement of the spindle of the polishing apparatus according to the present invention.
9 to 12 are block diagrams showing the braking means of the polishing apparatus according to the present invention.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and it should be understood that various modifications, equivalents, and/or alternatives of the embodiments of this document are included. In connection with the description of the drawings, like reference numerals may be used for like components.

In addition, expressions such as "first," "second," used in this document may modify various elements regardless of order and/or importance, and to distinguish one element from another element. It is used only and does not limit the corresponding components. For example, 'first part' and 'second part' may represent different parts regardless of order or importance. For example, without departing from the scope of the rights described in this document, the first component may be named as the second component, and similarly, the second component may also be renamed as the first component.

In addition, terms used in this document are used only to describe specific embodiments, and may not be intended to limit the scope of other embodiments. The singular expression may include the plural expression unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meanings as commonly understood by one of ordinary skill in the art described in this document. Among the terms used in this document, terms defined in a general dictionary may be interpreted with the same or similar meaning as the meaning in the context of the related art, and unless explicitly defined in this document, ideal or excessively formal meanings is not interpreted as In some cases, even terms defined in this document cannot be construed to exclude embodiments of the present document.

The present invention relates to an apparatus for automatically polishing an optical system such as a reflector or lens and a prism, and as shown in FIGS. 1 and 2 , the main body 10, the housing 20, the spindle 30, the eccentric holder 40, and the rotating motor It is a belt-type optical polishing apparatus having both an eccentricity control and a braking function, including 50, an idle motor 55, a grinding mission 60, an adjustment means, and a braking means as main components.

First, the main body 10 according to the present invention has a size to accommodate at least an optical system as shown in FIGS. 1 and 2, and is a frame for movably supporting the optical system in a setting direction.

The main body 10 is composed of a table 11 , a Y-axis stage 12 , an X-axis stage 13 , an abrasive bed 14 , a column 15 , a Z-axis stage 16 , and a control panel 17 . do.

The table 11 is a box-shaped frame having a size for accommodating the optical system, and has a storage space that can be opened and closed so that electrical equipment is installed therein.

This table 11 is mounted at the bottom with a plurality of legs for inducing fixation and movement from the floor.

The Y-axis stage 12 is mounted on the top of the table 11, and moves the optical system back and forth according to a signal.

The X-axis stage 13 is mounted on the upper end of the Y-axis stage 12, and moves the optical system left and right according to a signal.

The polishing bed 14 is mounted on the upper end of the X-axis stage 13 and fixedly supports the optical system to be polished.

The pillar 15 is fixedly mounted to the rear of the upper end of the table 11 , and supports the housing 20 to be mounted at a predetermined height.

The Z-axis stage 16 is mounted on the upper front surface of the column 15 , and the housing 20 is mounted and moved up and down.

The control panel 17 is disposed on the right side of the pillar 15 and outputs an operation signal according to a set sequence.

Here, the control panel 17 is configured with a wired/wireless communication module to enable remote control and monitoring from a distance.

Therefore, the operator can set the working conditions or check the working condition with a computer or portable terminal installed in another place.

And, the housing 20 according to the present invention has a size that embraces the optical system, and is mounted to face the optical system on the front side of the Z-axis stage 16 as shown in FIGS. 1 and 2 .

The housing 20 includes a case 21 , an upper plate 22 , and a lower plate 23 as shown in FIGS. 3 and 4 .

The case 21 is formed in a cylindrical shape with a diameter that embraces the optical system, and a rectangular mounting boss is protruded to be mounted on the Z-axis stage 16 at the rear.

The upper plate 22 is fixedly mounted on the upper end of the case 21 , and the output shafts of the rotation motor 50 and the revolution motor 55 are fixed to penetrate downward, respectively.

The lower plate 23 is mounted on the lower end of the case 21 , rotatably supports the eccentric holder 40 and seals the inside together with the upper plate 22 .

Subsequently, the spindle 30 according to the present invention is mounted to be exposed at the lower end of the housing 20 as shown in FIGS. 1 and 2 , and a tool for polishing the optical system is connected.

That is, the spindle 30 is mounted on the eccentric holder 40 to be able to rotate and move eccentrically as shown in FIG. 3 .

The operation of the spindle 30 will be described together with the grinding mission 60 to be described later.

Subsequently, the eccentric holder 40 according to the present invention is rotatably mounted to the center of the lower end of the housing 20 as shown in FIG. 3 , and holds the spindle 30 to be rotated and eccentrically movable.

The eccentric holder 40 is composed of a rotating disk 41, a holder bearing 42 and a holder bracket 43, as shown in FIGS. 4 and 5.

The rotating disk 41 is rotatably interposed in the center of the lower plate 23 and is connected to the rotor gear 61 of the grinding mission 60 to be described later.

That is, the rotating disk 41 rotates at the same position concentric with the rotor gear 61 .

Here, the rotating disk 41 has a rectangular spindle slot 41a that horizontally penetrates from the inside to the outside.

And on both sides adjacent to the spindle slot 41a, a rectangular connection slot 41b penetrating in the same direction and length as the spindle slot 41a is formed.

That is, the spindle slot 41a allows the spindle 30 to be eccentrically moved to the inside/outside and to be inserted therethrough.

And the connection slot 41b guides the eccentric movement of the spindle 30 while guiding the holder bearing 42 and the holder bracket 43 to be coupled with a bolt.

The holder bearing 42 is mounted on the upper end of the rotating disk 41 to slide inwardly/outwardly, and holds the spindle 30 rotatably.

The holder bracket 43 is mounted on the lower end of the rotating disc 41 to be slidably moved in/outward, and the spindle 30 passes through the center and is rotatably constrained.

The holder bracket 43 is coupled to the holder bearing 42 with bolts, and an adjustment means and a braking means are mounted at the lower end thereof.

That is, the holder bracket 43 transmits the eccentric driving force of the adjusting means and the braking force of the braking means to the spindle 30 .

Then, the rotation motor 50 and the revolution motor 55 according to the present invention are respectively mounted spaced apart from each other at the center and rear of the upper end of the housing 20 as shown in FIGS. 1 to 4 .

That is, the rotation motor 50 is mounted at the center of the upper end of the upper plate 22 as shown in FIG. 6 , so that the output shaft protrudes to the lower end of the center of the rotor gear 61 .

And the idle motor 55 is mounted on the rear of the upper plate 22, the output shaft protrudes to a position adjacent to the outer surface of the rotor gear (61).

The rotation motor 50 and the revolution motor 55 add the rotation power and the rotation power of the spindle 30, respectively.

Here, due to the structure of the grinding mission 60, it is possible to simultaneously add the rotational power and the idle power of the spindle 30 with only the idle motor 55.

However, in order to implement a variety of abrasive shapes, the rotation speed and the revolution speed of the spindle must be controlled differently, so it is preferable to combine the rotation motor 50 and the revolution motor 55 .

Then, the grinding mission 60 according to the present invention is mounted inside the housing 20 as shown in FIG. 4 and is connected to the rotation/revolution motors 55 and 55 and the eccentric holder 40 to generate rotation and revolution power to the spindle ( 30) simultaneously.

As shown in FIG. 6 , the grinding mission 60 includes a rotor gear 61 , a driving pulley 62 , a driven pulley 63 , a timing belt 64 , and a spindle pulley 65 .

The rotor gear 61 is rotatably mounted around the rotation motor 50 by receiving power from the idle motor 55 at the lower end of the upper plate 22 .

The rotor gear 61 is formed in a disk-like shape with a center penetrating like a ring, and a gear meshing with the spur gear 61a mounted on the output shaft of the idle motor 55 is formed on the outer surface of the rotor gear 61 .

The driving pulley 62 is located in the lower center of the rotor gear 61 , and is mounted on the output shaft of the rotation motor 50 protruding to the lower part of the rotor gear 61 .

The driven pulley 63 is mounted on the lower outer side of the rotor gear 61 and revolves around the driving pulley 62 according to the rotation of the rotor gear 61 .

The timing belt 64 is connected to the driving pulley 62 and the driven pulley 63 and rotates in a setting direction by the rotation motor 50 .

The spindle pulley 65 is inserted and interposed between the timing belt 64 while being inserted and mounted on the upper end of the spindle 30 .

Therefore, the spindle pulley 65 and the spindle 30 can move inward/outward toward the driving pulley 62 and the driven pulley 63 while rotating between the driving pulley 62 and the driven pulley 63 .

That is, when the driving pulley 62 and the driven pulley 63 are rotated by the rotating motor 50 as shown in FIG. 7 , the spindle 30 is restrained by the holder bearing 42 and the holder bracket 43 . rotates in the state.

In this state, when the rotor gear 61 and the rotating disk 41 are rotated by the orbital motor 50, the holder bearing 42, the holder bracket 43, and the spindle 30 revolve.

Here, as the spindle 30 approaches the driving pulley 62 by the adjusting means, the idle, that is, the eccentric distance becomes shorter, and the eccentric distance becomes longer as the spindle 30 moves away from the driving pulley 62 as shown in FIG. 8 .

Then, the adjusting means according to the present invention is mounted on the lower end of the eccentric holder 40 as shown in FIGS. 3 and 4 to adjust the eccentric distance of the spindle 30 .

This control means is composed of a control motor 70 fixedly mounted on one side of the holder bracket 43 as shown in FIG. 5 .

That is, the control motor 70 engages with the bottom surface of the rotating disk 41 to apply the eccentric driving force of the spindle 30 .

For example, when the control motor 70 rotates to the left, a moving force toward the inside which is the center of the rotating disk 41 is generated, and when it rotates to the right, a moving force toward the outside of the rotating disk 41 is generated.

The movement force generated in this way is transmitted to the holder bracket 43 and the holder bearing 42 so that the eccentric distance of the spindle 30 is adjusted as shown in FIGS. 7 and 8 .

At this time, the output shaft of the control motor 70 may be equipped with a rubber roller that engages the bottom surface of the rotating disk 41 in compression, and a pinion with a toothed tooth may be mounted thereon.

Here, when the pinion is mounted on the output shaft of the control motor 70, a rack 41c is formed on the bottom surface of the rotating disk 41 as shown in FIG.

These racks (41c) are penetrated or depressed in the same direction and length at a position adjacent to one connection slot (41b).

That is, the pinion and the rack 41c of the control motor 70 can precisely control the eccentricity of the spindle 30 as more accurate power transmission than the rubber roller is possible.

Finally, the braking means according to the present invention is mounted on the lower end of the eccentric holder 40 as shown in FIGS. 3 and 4 , and regulates the eccentric movement of the spindle 30 .

As shown in FIG. 5 , the braking means includes a braking actuator 80 mounted to the other side of the holder bracket 43 to engage the bottom surface of the rotating disk 41 .

Here, the braking actuator 80 may be composed of a braking electromagnet 81 that magnetically adsorbs the bottom surface of the rotating disk 41 or a braking cylinder 82 that presses it with pneumatic pressure or a screw motor.

The braking electromagnet 81 becomes a non-magnetic material when the spindle 30 moves eccentrically due to the control motor 70 as shown in FIG.

The braking cylinder 82 maintains a descending state when the spindle 30 moves eccentrically due to the control motor 70 as shown in FIG. do.

At this time, the braking cylinder 82 may have a soft rubber pad 82a attached to the upper end of the piston to increase friction as shown in FIG. 10 .

In addition, the braking cylinder 82 may be knurled at the upper end of the piston as shown in FIG. 11 to form teeth 82b to increase friction.

Here, when forming the teeth (82b) on the piston, it is preferable to form the unevenness (41d) on the bottom surface of the rotating disk (41) as shown in FIG.

That is, the unevenness 41d protrudes or sinks in the same direction and length at a position adjacent to the connection slot 41b to induce engagement with the piston of the braking cylinder 82 .

Here, the concavo-convex 41d may be integrally formed on the bottom surface of the rotating disk 41, and the plate material on which the concave-convex 41d is formed may be attached.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those having the knowledge of, of course, and these modified embodiments should not be individually understood from the technical spirit or perspective of the present invention.

10: body
11: table
12: Y-axis stage
13: X-axis stage
14: abrasive bed
15: pillar
16: Z-axis stage
20: housing
21: case
22: upper plate
23: lower plate
30: spindle
40: eccentric holder
41: rotating disk
41a: spindle slot
41b: connection slot
41c: rack
41d: irregularities
42: holder bearing
43: holder bracket
50: rotating motor
55: idle motor
60: polishing mission
61: rotor gear
61a: spur gear
62: drive pulley
63: driven pulley
64: timing belt
65: spindle pulley
70: control motor
80: brake actuator
81: braking electromagnet
82: brake cylinder
82a: rubber pad
82b: tooth

Claims (7)

In an apparatus for automatically polishing optical systems such as reflectors, lenses, and prisms,
a body 10 having a size for accommodating the optical system and movably supporting the optical system in a setting direction;
a housing 20 mounted on the upper end of the main body 10 to face the optical system and sized to embrace the optical system;
a spindle 30 mounted to be exposed at the lower end of the housing 20 and to which a tool for polishing the optical system is connected;
an eccentric holder 40 which is rotatably mounted on the center of the lower end of the housing 20 and holds the spindle 30 so as to be able to rotate and move eccentrically;
Rotation/revolution motors 50 and 55 which are mounted at a distance from the upper center and rear of the housing 20, respectively, and add rotation power and rotation power of the spindle 30, respectively;
Belt-type grinding mission 60 mounted inside the housing 20 and connected to the rotation/revolution motors 50 and 55 and the eccentric holder 40 to simultaneously transmit rotation and revolution power to the spindle 30 );
an adjusting means mounted on the lower end of the eccentric holder 40 and adjusting the eccentric distance of the spindle 30;
Including; is mounted on the lower end of the eccentric holder (40), and brake means for intermittent movement of the eccentricity of the spindle (30);
The main body 10,
a table 11 having a size for accommodating the optical system and being movably installed from the floor;
a Y-axis stage 12 mounted on the upper end of the table 11 and moving the optical system back and forth;
an X-axis stage 13 mounted on the upper end of the Y-axis stage 12 and moving the optical system left and right;
a polishing bed 14 mounted on the upper end of the X-axis stage 13 and fixedly supporting the optical system;
a pillar 15 mounted at the rear of the upper end of the table 11 and supporting the housing 20 at a predetermined height;
a Z-axis stage 16 mounted on the upper front surface of the pillar 15 and mounted on the housing 20 and moved up and down;
It is disposed on the right side of the pillar 15, and a control panel 17 that outputs an operation signal according to a set sequence; consists of,
The eccentric holder 40,
Rotating disk 41 interposed rotatably in the center of the lower plate 23 and connected to the grinding mission 60;
a holder bearing 42 that is slidably mounted on the upper end of the rotating disk 41 and rotatably holds the spindle 30;
a holder bracket 43 that is slidably mounted on the lower end of the rotating disk 41 and transmits the eccentric driving force of the adjusting means and the braking force of the braking means to the spindle 30;
A belt-type optical polishing device that has both eccentricity control and braking functions, characterized in that it consists of a delete The method according to claim 1,
The housing 20,
a cylindrical case 21 centered vertically in front of the Z-axis stage 16;
an upper plate mounted on the upper end of the case 21, and fixing the output shafts of the rotation motor 50 and the idle motor 55 to pass through the lower portion;
a lower plate 23 mounted on the lower end of the case 21 and rotatably supporting the eccentric holder 40;
A belt-type optical polishing device that has both eccentricity control and braking functions, characterized in that it consists of delete The method according to claim 1,
The rotating disk 41,
a rectangular spindle slot (41a) which is horizontally penetrated from the inside to the outside to allow the spindle 30 to be eccentrically inserted;
a rectangular connection slot (41b) passing through both sides adjacent to the spindle slot (41a) in the same direction and length to guide the holder bearing (42) and the holder bracket (43) to be coupled to each other;
A belt-type optical polishing apparatus having both eccentricity control and braking functions, characterized in that this is formed. The method according to claim 1,
The grinding mission 60,
a disc-shaped rotor gear 61 that is rotatably mounted on the lower end of the upper plate 22 around the rotation motor 50 and meshes with the output shaft of the revolving motor 55 on the outer surface;
a driving pulley 62 located at the center of the lower portion of the rotor gear 61 and mounted on the output shaft of the rotating motor 50 protruding from the lower portion of the rotor gear 61;
a driven pulley 63 mounted on the lower outer side of the rotor gear 61 and revolving around a driving pulley 62 according to the rotation of the rotor gear 61;
a timing belt 64 connected to the driving pulley 62 and the driven pulley 63 to rotate in a setting direction;
a spindle pulley (65) which is inserted and mounted on the upper end of the spindle (30), is inserted between the timing belts (64), and rotates while eccentrically moving in and out of the rotor gear (61) by an adjusting means;
A belt-type optical polishing device that has both eccentricity control and braking functions, characterized in that it consists of The method according to claim 1,
The control means,
A control motor 70 fixedly mounted on one side of the holder bracket 43 and engaged with the bottom surface of the rotating disk 41 to apply an eccentric driving force of the spindle 30;
The braking means,
A braking actuator 80 fixedly mounted on the other side of the holder bracket 43 and engaged with the bottom surface of the rotating disk 41 to control the eccentric movement of the spindle 30;
The braking actuator 80,
a braking electromagnet 81 for magnetically adsorbing the bottom surface of the rotating disk 41; or a brake cylinder 82 for pressing with pneumatic or screw motor; and
The braking cylinder 82,
a soft rubber pad 82a attached to the bottom surface of the rotary disk 41 and the upper end of the piston that is selectively pressed into close contact with each other to increase friction, or a toothed 82b knurled at the upper end of the piston to increase friction;
A belt-type optical polishing apparatus having both eccentricity control and braking functions, characterized in that it is configured.

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