KR200306265Y1 - apparatus for V-shape grinding winded guide rail of a gonie - Google Patents

Abstract

The present invention fixes a large number of curved guide rails, precisely grinds the V grooves of a plurality of curved guide rails in one grinding process, and has a grindstone dresser to grind the V grooves of the curved guide rails after a predetermined number of times. It relates to a V-groove grinding device for curved guide rails for gorne that can regenerate whetstones.

The present invention is a base member; A rail chuck provided on one side of the base member and supporting and fixing a plurality of curved guide rails sequentially in a circular shape on a circumferential surface thereof; Grinding means for immediately moving toward the circumferential surface of the rail chuck and having a V-shaped grindstone protrusion on one circumferential surface to grind the V groove of the curved guide rail supported and fixed to the circumferential surface of the rail chuck; Rotary drive means mounted to the rail chuck and the grinding means, respectively, to drive them to rotate in opposite directions; And it provides a V groove grinding device of the curved guide rail for gorne comprising a moving means for moving the grinding means straight to the rail chuck side.

Description

Apparatus for V-shape grinding winded guide rail of a gonie}

The present invention relates to a V-groove grinding device for curved guide rails to prolong the life of the gorne by preventing the wear occurring during precision driving of the gorner as much as possible. The present invention relates to a V-groove grinding device for curved guide rails for gorne capable of precision grinding.

In general, gorne is a mechanical element that controls positioning by precisely fine-tuning the tilt angle in the radial / tangential direction for optical devices such as optical pickup devices, electrical / electronic devices, and various mechanical elements. A lower stage 101 having a dovetail groove 101a formed on an upper surface thereof, as shown in FIG. 1; An upper stage 102 provided with a dovetail 102a at a bottom thereof corresponding to the dovetail groove 101a, and having a gear 102b formed on a surface of the dovetail 102a; It is mounted to the lower stage 101, one side is provided with a worm (not shown in the figure) is engaged with the gear 102b to convert the rotational movement into a straight line to the lower stage 101 to the upper stage 102 It consists of a micrometer 103 for adjusting the tilt angle in the radial / tangential direction.

Here, the micrometer (103) is provided with a stepping motor (104) and a manual handle (105) is configured to precisely adjust the tilting angle manually and automatically.

The gorgon configured as described above has a tilting angle adjusted while the lower stage 101 and the upper stage 102 are in surface contact with the operation of the worm and the gear 102b. The contact surface between the stage 102 and the lower stage 101 and the contact portion between the worm and the gear 102b are worn down, and the wear acts as a cause of lowering the precision of the tilt angle adjustment, thereby shortening the life of expensive gornies. .

On the other hand, the XY axis stage is provided with a V-shaped straight rail to prevent wear as much as possible to extend the life, while in the case of the gorne the contact surface of the upper stage 102 and the lower stage 101 is a curved surface Therefore, there was a problem that the V-shaped straight rail cannot be applied.

In order to overcome this problem, Japanese Patent No. 2762055 discloses a V-shaped curved guide rail for attaching to the curved surface of the gorner to prevent wear as shown in FIG.

Looking at an example of the manufacturing process of the V-shaped curved guide rail 201 shown in the above, first, to produce a mold to fit the curved surface of the gornea, and put a powder metallurgy into the mold, the molded guide rail After tapping, the first curved surface and the plane are ground, and the V groove is secondly ground, and then the degree is measured. The performance of the V-shaped curved guide rail manufactured in this way depends on the roughness of the inner surface of the V-groove in contact with the steel balls 203 of the retainer 202.

As shown in Figs. 3A and 3B, the V-groove of the guide rail 201 has the same length (shown in Fig. 3A) of both sides 201a and 201b, and the length of one side 301a and the other side ( 301b) is processed into a short type. The former V groove type (V groove with the same length of both sides 201a and 201b) is mainly applied to a linear guide rail, and when applied to a curved guide rail, There is a fear that it may cause a decrease. The latter V groove type (the length of one side 301a is short and the length of the other side 301b is long V groove) is applied to the curved guide rail.

In the case of grinding the inner surface of the V groove of the straight guide rail, it is possible to grind a large amount while grinding the grinding machine equipped with the V-shaped grindstone, while in the case of the curved guide rail as described above, the V groove is formed by combining several at once. Since no grinding device has been developed, the V-groove of each curved guide rail is ground by manually grinding the V-groove or by making a separate grinding device with a curved grindstone. Many machining processes are required such as fixing chucks or grinding wheels to fit the radius of curved guide rails that vary according to size, and due to the structural characteristics of curved guide rails, it is impossible to grind several V grooves at once. There is a problem.

In addition, the curved guide rail is applied to the V grooves having different lengths of both sides as shown in FIG. 3B. In this case, when the V grooves are processed, the short and long surfaces of the V grooves are processed at once. Not only can it take a lot of processing time, there is another problem that can not be mass-processed V groove with the conventional grinding device.

Therefore, the present invention has been devised to solve the above problems, it is possible to fix the curved guide rail in a large amount, and to precisely grind the V groove of the plurality of curved guide rail in one grinding process, It is an object of the present invention to provide a V-groove grinding device for curved guide rails for gorne that can be continuously processed in one process even when the lengths of both sides are different.

In addition, the present invention is equipped with a whetstone dresser to regenerate the grinding wheel after grinding the V-groove of the curved guide rail a predetermined number of times, according to the length of the V-groove automatically or manually Another object is to provide a V-groove grinding device for curved guide rails for gorne that can be precisely adjusted.

1 is a perspective view showing a general automatic gorne stage.

Figure 2 is a perspective view of a curved guide rail attached to the curved surface of the gorner of Figure 1 to prevent wear.

3A and 3B are cross-sectional views of the curved guide rail of FIG.

Figure 4 is a perspective view showing an embodiment configuration of the V groove grinding device of the curved guide rail for gorne according to the present invention.

Figure 5 is a perspective view showing a detailed configuration of the V groove rail fixing portion that is the main part of the present invention.

6a and 6b are a perspective view and a plan view showing a state in which the curved guide rail is fixed to the jig which is the main part of the present invention.

Figure 7 is a cross-sectional view showing a grinding wheel of the V groove grinding device of the curved guide rail for gorne according to the present invention.

8a and 8b are a plan view and a front view showing the operating state of the V groove grinding device of the curved guide rail for gorne according to the present invention.

* Explanation of symbols for main parts of the drawings

301: base member 302: first support

303: second support 304: third support

305: rail chuck 306: stage block

307: grinding wheel 308: curved guide rail

309: Burr dressing device 311, 312: first and second motor

The present invention to achieve the above object is a base member; A rail chuck provided on one side of the base member and supporting and fixing a plurality of curved guide rails sequentially in a circular shape on a circumferential surface thereof; Grinding means for immediately moving toward the circumferential surface of the rail chuck and having a V-shaped grindstone protrusion on one circumferential surface to grind the V groove of the curved guide rail supported and fixed to the circumferential surface of the rail chuck; Rotary drive means mounted to the rail chuck and the grinding means, respectively, to drive them to rotate in opposite directions; And it provides a V groove grinding device of the curved guide rail for gorne comprising a moving means for moving the grinding means straight to the rail chuck side.

Hereinafter, with reference to the accompanying drawings of Figures 4 to 8 will be described an embodiment of the present invention in detail.

The V-groove grinding device of the curved guide rail for gorne according to the present invention is implemented to precisely grind the V-grooves of a plurality of curved guide rails in a single process, as shown in FIG. The first support 302 is provided on the upper surface for supporting the chuck, the middle portion is provided with a second support 303 for supporting the grinding wheel dressing device, the third for guiding the transfer of the guide block on the other side A base member 301 provided with a support 304; A rail chuck 305 supported on the inner side of the first support 302 to support and fix the plurality of guide rails; A stage block (306) installed on an upper portion of the third support (304) and driving straight toward the rail chuck (305); A grinding wheel 307 installed at the stage block 306 to grind the V groove of the curved guide rail held by the rail chuck 305; A whetstone dressing device 309 installed on the second support 303 to regenerate the grinding wheel 307; And first and second motors 311 and 312 connected to the rail chuck 305 and the grinding wheel 307 and providing rotational forces in opposite directions.

As shown in FIG. 5, the rail chuck 305 has a hollow hole 401a formed at the center thereof, and a plurality of fixing grooves 401b are formed in the radially outer side of the hollow hole 401a. Wow; A jig 403 fixed to the hollow hole 401a of the chuck body 401 and having a seating portion 403b having a stepped shape on an inner circumferential surface thereof to allow a plurality of curved guide rails 308 to be seated thereon; A plurality of jaws 402 inserted into the plurality of fixing grooves 401 b of the chuck body 401 and operative to provide a pressing force to the jig 403 to be fixed; Jaw control means (not shown) for controlling so that the plurality of jaws 402 can be linked to the same.

Here, the jaw control means is composed of a hydraulic control unit driven by the hydraulic pressure, the jig 403 is manufactured to fit the radius of the curved guide rail 308.

As shown in FIG. 6, the jig 403 has a plurality of through holes 403a formed on the side surface of the guide rail seating portion 403b, and a fixing bolt 404 is fitted into the through holes 403a. It is. In addition, the through hole 403a is formed at the same position as that of the tap hole 308a formed at equal intervals in the guide rail 308. Accordingly, after matching the tab hole 308a of the guide rail 308 with the through hole 403a, the fixing bolt 404 passes through the through hole 403a to be fastened to the tab hole 308a to guide the guide rail 308a. ) Is to be fixed to the jig (403). At this time, the V groove of the guide rail 308 is located toward the grinding wheel 307 side, it is possible to precisely grind the V groove of the plurality of curved guide rail 308 by the grinding wheel 307.

On the other hand, the third support 304 has a V-shaped guide groove (304a) is formed on both upper surfaces thereof, the scale (304b) for measuring the transfer amount of the stage block 306 is stamped on one side.

The stage block 306 has a V-shaped protrusion formed at its bottom to move along the V-shaped guide groove 304a of the third support 304. A stepping motor 310 is provided between the stage block 306 and the third support 304 to provide a straight forward transfer of the stage block 306. Accordingly, as the stepping motor 310 is rotated, the stage block 306 moves straight on the third support 304.

In this embodiment, the stepping motor 310 is presented as a linear transfer means of the stage block 306, and a structure capable of automatic transfer may be provided. However, the stepping motor 310 may be replaced with a manual handle.

As shown in FIG. 7, the grinding grindstone 307 has a V-shaped protrusion 307a formed on one circumferential surface thereof, and a motor shaft support groove 307b formed on the other central portion thereof. It consists of disc of shape. In particular, the length of both sides of the V-shaped protrusion 307a has the same length as the V-groove quadrangle of the curved guide rail 308. Therefore, the V grooves of the plurality of guide rails can be continuously processed by one entry operation of the V-shaped protrusion.

In this embodiment, the lengths of both sides of the V-shaped protrusion of the grinding wheel 307 may vary according to the lengths of both sides of the V-groove of the curved guide rail 308. At this time, when the lengths of both sides of the V-groove of the curved guide rail 308 are different, that is, from the curved guide rail having the V-grooves with the same length of both sides, the curved guide rails having the V-grooves having different lengths from both sides. When replaced, the quadrilaterals of the projections 307a of the grinding wheel 307 are processed using the whetstone dressing apparatus 309 to be described later, so as to have the same quadrangle as the quadrilaterals of the V grooves having different lengths.

The whetstone dressing device 309 may include a transfer rail 501 provided at both ends of an upper surface of the second support 303 of the base member 301; A moving stage 502 for moving straight on the transfer rail 501; A handle 503 installed at the center of the upper surface of the second support 303 to provide a straight transfer force of the movement stage 502; A micrometer 504 installed on the moving stage 502 and rotated by the vertex angle of the grindstone 307a and conveyed with a fine straight line; It is installed on the micrometer 504, and consists of a grindstone dresser 505 for regenerating the grindstone 307a by contacting the inner and outer slopes of the grindstone 307a.

Referring to Figures 8a and b the working state of the present invention configured as described above are as follows.

First, a plurality of curved guide rails 308 are disposed in a circular shape on the seating portion 403 of the jig 403, and the V grooves of the curved guide rails are positioned to face the grinding wheel 307. The tab hole 308a of the rail 308 and the through hole 403a of the jig are seated in a state where they coincide. The fixing bolt 404 penetrates through the through hole 308a to be fastened to the tab hole 308a.

Next, the jig 403 on which the guide rail 308 is seated is inserted into the hollow hole 401a of the rail chuck 305, and the jaw provided in the fixing groove 401b of the chuck body 401 by using hydraulic pressure. 402 is driven to grip the jig 403.

In this state, the stepping motor 310 is driven to transfer the stage block 306 straight to the rail chuck 305, and then the first and second motors 311 and 312 are driven to rotate in opposite directions to each other. And the grinding wheel 307 is rotated.

At this time, the first motor 311 rotates at a low speed of 200 to 300 rpm, and the second motor 312 rotates at a high speed of 2000 to 3000 rpm. The low speed rotation of the first motor 311 is a rotation speed such that the eccentric error of the guide rail 308 fixed to the jig 403 is neglected, which is a guide in which the high speed continuous grindstone 307 is fixed in a circular shape. It means that the V groove of the rail can be ground constantly.

Subsequently, the V-shaped protrusion 307a of the rotating grinding wheel 307 enters the V groove of the curved guide rail 308 fixed to the seating portion 403b of the jig 403, wherein the base member 301 After determining the entry depth by reading the scale imprinted on the side of the third support 304, the step block motor 306 is precisely moved to the V groove side of the curved guide rail 308. It is entered and precision grinding is performed.

After the V groove of the curved guide rail 308 is precisely ground, the stepping motor 310 is reversed to transfer the stage block 306 backward, and the first and second motors 311 and 312 are stopped.

When the V groove grinding of the curved guide rail 308 is completed, the V groove precision of the curved guide rail 308 is measured using a precision measuring means.

Next, the moving stage 502 of the grinding wheel dressing device 309 provided in the second support 303 of the base member 301 is moved straight to the grinding wheel 307 to regenerate the grinding wheel 307a. .

That is, the handle 503 is rotated so that the moving stage 502 moves straight to the side of the grinding wheel 307, and the grinding wheel dresser 505 is positioned at the inner side of the protrusion of the grinding wheel 307 in the above state. Rotate the micrometer 504 to make it easier. Thereafter, the micrometer 504 is adjusted so that the grinding wheel dresser 505 is in contact with the inner side of the projection 307a, and the second motor 312 is driven so that the inner surface of the projection of the grinding wheel 307 blunted. First dressing.

Subsequently, the second motor 312 is stopped, the grinding wheel dresser 505 is rotated so as to be located at the outer side of the grindstone 307a, and then the grinding grindstone is blunted in the same procedure as the primary dressing. The outer surface of the projection 307a of 307 is secondaryly dressed.

On the other hand, the grinding wheel (307) by the dressing method of the whetstone dressing device described above, when the guide rail having a V-groove with a quadrilateral length different from the V-groove of the curved guide rail first processed and seated on the jig. The V-shaped projections 307a are machined to have the same length as both sides of the V-grooves of the replaced guide rails.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and will be apparent to those skilled in the art without departing from the technical spirit of the present invention.

As described above, according to the present invention, in processing the V groove of the curved guide rail, the V groove of the plurality of curved guide rail in a single step of holding a plurality of curved guide rail in the rail chuck and entering the grinding wheel The grinding wheel can be precisely ground, reducing the cumbersome work of reinstalling or fixing the grinding wheel or curved guide rail during the step-by-step grinding process.In this case, the grinding wheel can be reinstalled to prevent errors and defects occurring during the grinding process. It has an effect that can be done.

In addition, the grinding wheel and curved guide rail can be easily replaced and reassessed at each processing stage, and the grinding wheel can be machined to fit the length of the V groove of the curved guide rail. In addition to reducing the cost, the processing reliability has other effects.

Claims (7)

A base member; A rail chuck provided on one side of the base member and supporting and fixing a plurality of curved guide rails sequentially in a circular shape on a circumferential surface thereof; Grinding means for immediately moving toward the circumferential surface of the rail chuck and having a V-shaped grindstone protrusion on one circumferential surface to grind the V groove of the curved guide rail supported and fixed to the circumferential surface of the rail chuck; Rotary drive means mounted to the rail chuck and the grinding means, respectively, to drive them to rotate in opposite directions; And Moving means for moving the grinding means straight to the rail chuck side V groove grinding device for the curved guide rail for gornea comprising a. The method of claim 1, The rail chuck It is installed on the main shaft of the rotation drive means, the hollow hole is formed in the center, the chuck body formed with a plurality of fixing grooves in the radially outer side of the hollow hole; A jig fixed to the hollow hole of the chuck body and having a seating portion having a stepped shape on an inner circumferential surface thereof to allow a plurality of curved guide rails to be seated thereon; A plurality of jaws each fitted into a plurality of fixing grooves of the chuck body, the plurality of jaws operative to provide a pressing force to the jig to be fixed; And Jaw control means for controlling the plurality of jaws to be linked in the same way V groove grinding device for the curved guide rail for gornea comprising a. The method according to claim 1 or 2, The jig is formed with a plurality of through holes on the side of the guide rail seating portion, V groove grinding device of the curved guide rail for the gorne further comprises a fixing bolt is inserted into the through hole and fastened to the tab hole formed in the guide rail. The method of claim 1, It is installed on the upper surface of the base member, the V groove grinding device of the curved guide rail for gorne further comprising a grinding wheel dressing means for regenerating the dull grindstone by contacting the inside and outside of the V-shaped grinding wheel projection of the grinding means. The method of claim 4, wherein The grinding stone dressing means A transfer rail installed on an upper surface of the base member; A moving stage driving the transfer rail to the grinding means side; A handle installed under the moving stage to provide a straight driving force thereto; A micrometer installed on the moving stage, rotated by the vertex angle of the grinding wheel protrusion, and driven just before the fine; And A whetstone dresser installed above the micrometer to regenerate the whetstone V groove grinding device of the curved guide rail for gornea comprising a. The method of claim 1, The means of transportation A support member installed on the base member and having a guide groove formed on an upper surface thereof; A stage block provided on a bottom surface corresponding to the guide groove to move straight along the guide groove of the support member, the stage block supporting the grinding means; And Stepping motor for driving the stage block straight V groove grinding device of the curved guide rail for gornea comprising a. The method of claim 6, The V groove grinding device of the curved guide rail for gorne further comprises a scale which is stamped on the side of the support member to measure the feed amount of the stage block.