KR20110137098A - A polygon needle guide of unlimited stroke type - Google Patents

Abstract

PURPOSE: An unlimited stroke type polygonal needle bearing guide is provided to reduce manufacturing, material, and maintenance costs by forming the needle bearing using a synthetic resin material having flexibility and durability. CONSTITUTION: An unlimited stroke type polygonal needle bearing guide(11) comprises guiderails(12), circulation-type needle bearing retainers, and circulation grooves(16). The guiderails are installed in the inner side of an out sleeve and are coupled to the circulation-type needle bearing retainers. The guiderails guide the circulation-type needle bearing retainers to be unlimitedly circulated. The needle bearing retainers retain the needle bearing. The circulation grooves pass through the out sleeve in an axial direction so that the needle bearing retainers passing through the inner surface of the out sleeve can be unlimitedly circulated.

Description

Polygon Needle Guide of Unlimited Stroke Type

The present invention has a lip formed at an angle to hold the needle or roller bearing in the axial direction and to keep the needle or roller smoothly while maintaining a constant gap, and the needle or roller bearing (hereinafter referred to as 'needle') Needle bearing circular retainer assembled in a polygonal structure by assembling and coupling a circular needle bearing retainer manufactured in a straight shape to a polygonal outer sleeve inner side with a connecting link connecting the ribs holding the bearings. This invention relates to an infinite stroke polygon needle bearing guide designed to smoothly perform infinite linear reciprocating motion while maintaining durability, low noise, high accuracy and high rigidity by configuring a smooth circulation.

The guide used for the high precision linear reciprocating motion used in the semiconductor manufacturing apparatus which requires the conventional precision processing is provided with a finite scroll, but in this case, a finite stroke retainer fastened to the post to shorten the stroke, Since the length of the sleeve (out sleeve) must be long, the strength is reduced, there is a problem that the material cost increases.

Another prior art discloses a needle bearing retainer for a polygonal finite stroke and an outsleeve in which they are fastened to each other in Korean Patent Publication No. 10-0872499, to which the present applicant has applied for a patent. It is located between the guide post and the out sleeve so that the out sleeve can be linearly moved up and down.In contrast to the guide that adopts the needle bearing retainer for infinite stroke in its technical configuration, shape and application. There is a remarkable difference, and there is a remarkable difference in effect.

The problem to be solved by the present invention is to solve the problems of the prior art endurance by configuring the circular needle bearing retainer guide assembled in a polygonal structure for use in a semiconductor manufacturing apparatus, etc. requiring precision processing is smoothly circulated It is to make infinite reciprocating motion smoothly while maintaining low noise, high accuracy and high rigidity.

Another problem to be solved by the present invention is that when using a finned stroke retainer, there is a problem in that the finned stroke retainer fastened to the post is made short or out sleeve (long sleeve) in order to lengthen the stroke, but in the present invention The longer the stroke of the out sleeve, the lower the strength and the material cost does not increase.

Another problem to be solved by the present invention is to increase the durability by using a needle bearing, and to design and manufacture the inner side of the outer sleeve in a polygon according to the guide post of the polygon shape, the moving shaft does not rotate due to external forces, high accuracy It is to make infinite reciprocating movement of.

Another problem to be solved by the present invention is to design and manufacture a circular needle bearing retainer for retaining needle bearings in one-piece molded with synthetic resin to increase the uniformity of the product, shortening the production time, manufacturing To reduce costs.

The problem solving means according to the present invention holds the needle bearing in the axial direction, and the circulation groove so that the circular needle bearing retainer infinitely circulates between the inner side and the outer side of the outer sleeve so that the needle bearing can have a smooth rolling. In order to form and fasten the assembly, the connecting ring formed on the left and right sides of the circular needle bearing retainer is configured to be located on the upper surface of the guide rail, and the circular retainer holding the needle bearing smoothly circulates at both ends of the out sleeve. It is composed of a semicircle so that the inside of the semicircle is equipped with a circular groove formed R-Piece, and the end cap is mounted on the outside, the needle bearing circular retainer assembled in a polygonal structure Infinite straight reciprocation while maintaining durability, low noise, high accuracy and high rigidity by configuring for smooth circulation This is done so smoothly designed to provide for the infinite polygon stroke needle bearing guides.

Another problem solving means according to the present invention forms a lip having a predetermined angle at both ends to be connected while circulating in the axial direction, the lip retainer to form a lip for holding the needle bearing at a predetermined interval, The connecting rings are formed on the left and right sides of the lip to connect the two to each other, but the uniformity of the product is produced by adopting the synthetic resin material with the flexibility and durability so that the circular needle bearing retainer can be infinitely circulated. To provide a polygon needle guide for infinite stroke with high accuracy.

Another problem solving means according to the present invention is to increase the durability than the ball bearing by adopting the needle bearing, the number and angle of the lip holding the needle bearing for the infinite stroke for smooth reciprocating movement by smooth friction by minimizing the friction force A polygon needle guide is provided.

The life of the needle bearing

to be.

The unit of L is km, P is external force (external load), and C is dynamic load rating.

The present invention is to solve the problems of the prior art, the needle bearing circulating needle bearing retainer guide assembled in a polygonal structure for use in a semiconductor manufacturing apparatus, etc. requiring precision processing is configured to ensure a smooth circulation durability, low noise In addition, it has the effect of smoothly achieving infinite linear reciprocating motion while maintaining high accuracy and high rigidity.

Another effect of the present invention is to make a finite stroke retainer fastened to a post to shorten the stroke or to make an out sleeve longer in order to lengthen the stroke when a finite stroke retainer is used. While the stroke of the sleeve is lengthened, the strength does not drop and the material cost does not increase.

Another effect of the present invention is to increase the durability by using a needle bearing, and the inner sleeve of the outer sleeve is designed to produce a polygon in accordance with the polygonal guide post, so that the movement axis is not rotated by the external force, the direction and angle set To move accurately.

Another effect of the present invention is to design and manufacture a circular needle bearing retainer for retaining needle bearings, which is made of a synthetic resin material having flexibility and durability in one-piece shape to increase the uniformity of the product, and the production time. To reduce maintenance time and manufacturing costs.

1 is a yellow cross section of the polygon needle guide for infinite stroke according to the present invention
Figure 2 is the shape of both ends of the outer sleeve of the polygon needle guide for infinite stroke in accordance with the present invention
Figure 3 is a shape when the needle bearing retainer for infinite stroke in accordance with the present invention rotates
Figure 4 is a guide post fastened to the polygon needle guide for infinite stroke according to the present invention
5 is a needle bearing retainer for infinite stroke employed in the present invention
6 is a side view of the needle bearing retainer for infinite strokes;
Explanation of symbols on the main parts of the drawings
11: Polygon needle guide for infinite stroke
12; Guide rails 13, 14; Guide rail wing
15; Retainer (magnified in FIG. 5) 16; Circular groove
17; Guide post
21, 22; R piece 23, 24; End cap
25; Inward direction 26; Outward
31: circular needle bearing retainer 32; Upper lip
33; Lower lip 34, 35; Connecting member
36; Needle bearing 37; Left termination
38; Right end 41, 42; Link

Hereinafter, the present invention will be described in detail. Polygon needle guide for infinite stroke according to the present invention is a circular needle bearing retainer is adopted, the connecting ring formed on the left and right sides of the circular needle bearing retainer is formed long and is configured to circulate located on the upper surface of the guide rail. .

The endless stroke polygon needle guide is configured to form a semicircle so that the circular retainer holding the needle bearing can circulate smoothly at both ends of the outer sleeve, and the inner side of the semicircle is formed of a circular groove guide (R-Piece). ) Is mounted, and an end cap is mounted on the outside, and the circular needle bearing retainer assembled in a polygonal structure is configured to allow smooth circulation.

Infinite circulation type needle bearing retainer according to the present invention is easy to assemble by forming a single piece of synthetic resin material, while smoothing infinite linear reciprocating motion while maintaining the uniformity, durability, low noise, high accuracy and high rigidity of the product It is configured to do so. A specific embodiment according to the present invention will be described.

<Example>

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will now be described with reference to the drawings. 1 is a cross-sectional view of the polygon needle bearing guide for infinite stroke according to the present invention. First, the structure of the circular needle bearing retainer employed in the present invention will be described in order to facilitate understanding of the present invention.

Fig. 5 is a front view of the endless needle bearing retainer (31 in Fig. 5) employed in the endless stroke polygon needle bearing guide according to the present invention. Fig. 6 is a side view of the needle bearing retainer (31 in Fig. 5) for infinite stroke according to the present invention;

The endless circular needle bearing retainer shown in Fig. 5 (31 in Fig. 5) holds the needle bearing (36 in Fig. 5) in the axial direction and the needle bearing 36 is inserted at regular intervals to have a smooth rolling. Upper and lower lips (32, 33 in FIG. 5; <>) are formed to face each other at an angle so that the needle bearings 36 are held on the left and right sides of the upper and lower lips (32, 33 in FIG. 5). Connecting rings (41, 42 in Fig. 6) are formed to keep the ribs 32 and 33 connected at regular intervals, and the overall shape of the retainer is molded into a straight shape with a predetermined width.

The upper lip 32 and the lower lip 33 for holding the needle bearing 36 in FIG. 5 are referred to as `` lips '' in the following description.

Polygonal guide circular needle bearing retainer (31 in Figure 5) according to the present invention may be configured to hold the needle bearing 36 and inserted into the outer sleeve to be infinitely circulated even if not molded integrally formed have.

In Fig. 5, the lips 32 and 33 holding the needle bearing 36 are smoothly rolled while the needle bearing 36 is not detached to the outside by the oppositely formed lip (<>) and minimizes frictional force. In order to facilitate the reciprocating motion, it is preferable to form and manufacture a range of 45 ° C. to 60 ° C. based on the center of the needle bearing 36 inserted into the ribs 32 and 33.

The endless circular needle bearing retainer 31 employed in the present invention is fixed to hold the needle bearing at the minimum curvature during circulation of the circular needle bearing retainer 31 in order to hold the needle bearing 36. Connection rings (41 and 42 in FIG. 6) protruding uniformly in the width direction are formed on the left and right sides so as to connect the ribs 32 and 33 formed to face each other at an angle to maintain a constant interval. In this specification, the circular needle bearing retainer 31 may be shortened and used as a 'retainer'.

In Fig. 5, the adjacent lips 32, 33 formed opposite to each other are connected to each other in order to maintain the rigidity of the recirculating needle bearing retainer 31 when holding the needle bearing 36 at regular intervals. It is preferable to manufacture by forming a shape connected to a predetermined interval by 35), by the connecting ring (41, 42 in Fig. 6) formed to protrude in a predetermined width on the left and right sides of the circular needle bearing retainer (31). Molding and fabrication may be performed so that the lips 32 and 33 for holding these bearings 36 are supported. The connecting members 34 and 35 may be manufactured by forming one or more spaces in one piece or forming one or more spaces in the middle in order to save material costs.

Lips holding the needle bearing 36, the shape of the lip (32, 33) to form a wide one at a predetermined angle or two or more formed at regular intervals as shown in Figure 5 configured to hold the needle bearing 36 can do.

The connecting rings (41 and 42 of FIG. 6) of the circular needle bearing retainer (31 of FIG. 5) are wings formed on both sides of the guide rails (12 of FIG. 1) located at an angled portion of the inner side of the out sleeve formed in a polygon. It is comprised so that it may be located in the upper surface of (13 of FIG. 1). Widths and thicknesses of the wings (13 and 14 of FIG. 1) formed on both sides of the guide rail (12 of FIG. 1) may be variously designed and manufactured.

In Fig. 1, a guide rail 12 is positioned at an angled portion of a polygon, and a connecting ring (41, 42 in Fig. 6) of an endless circular needle bearing retainer holding a needle bearing is formed at a portion where each surface is formed. It is comprised so that it may be located in the upper surface of the blade | wing 13 and 14 of a guide rail.

In order to achieve the infinite stroke polygon needle bearing guide (11 in Figure 1) according to the present invention, the circular needle bearing retainer (31 in Figure 5) employed in the infinite stroke polygon needle bearing guide (11 in Figure 1) Circumferentially penetrates in the axial direction on the outsleeve so that it can infinitely circulate through the inner surface of the outsleeve (16 in Fig. 1).

An endless circular needle bearing retainer (15 in FIG. 1) passes through the inner side of the outer sleeve between the Alpis (21, 22 in FIG. 2; R-Piece) and the end cap (23, 24 in FIG. 2, End Cap). Thus, a space is formed through which the retainer can pass so as to continuously circulate through the circulation groove (16 in FIG. 1).

Between the inner surface of the out sleeve and the circulation groove 16 is configured to form a semicircle so as to smoothly circulate at both ends of the out sleeve holding the needle bearing. The inner half of the semicircle is configured to be bolted to the al-piece (21, 22; R-Piece) for guiding the needle bearing retainer 31 into the circulation groove 16, and the end cap 23 on the outside of the semicircle , 24; end caps are fastened by bolts, and the endless needle bearing retainer 31 is configured to smoothly circulate.

The position of the connecting ring (41, 42 of FIG. 6) connecting the lip (32, 33 of FIG. 5) can be located in the center, and the lip (32, 33 of FIG. 5) holding the needle bearing 36 In consideration of the bearing capacity and durability of the), it may be formed by positioning in the rotational inward direction (25 of FIG. 2) or by positioning in the rotational outward direction (26 of FIG. 2).

As described above, the polygon guide circular needle bearing retainer (31 in FIG. 5) according to the present invention is adopted in the infinite stroke polygon needle bearing guide to form semicircles at both ends in the axial direction of the outsleeve when circulating. It is preferable to mold and manufacture a synthetic resin material having flexibility and durability so as to rotate smoothly.

The endless circular needle bearing retainer (31 in Fig. 5), in which the needle bearing (36 in Fig. 5) is inserted and fastened, is inserted into the inner surface of the polygonal outer sleeve and the circulation groove (16 in Fig. 1). For example, when the inner surface of the out sleeve is a quadrangle, four circulation grooves 16 are formed to penetrate in the axial direction of the out sleeve in parallel with the respective inner surfaces, and in the case of a pentagon, five circulation grooves 16 are formed. It is formed to penetrate parallel to the axial direction of the out sleeve.

Figure 3 shows the shape when the needle roller retainer for infinite stroke according to the present invention is rotated, Figure 4 is a polygon needle for infinite stroke employing the needle bearing retainer for infinite stroke designed according to the present invention. The guide posts are fastened to these guides.

The life of the needle bearing

Lt;

In contrast, the life of the ball bearing

to be.

Here, the unit of L is km, P is external force (external load), C means dynamic load rating. That is, as can be seen from the above equation, the life of the needle bearing is much longer than the life of the ball bearing.

The endless stroke polygon needle bearing guide according to the present invention employs a circular needle bearing retainer, and the connecting ring formed on the left and right sides of the circular needle bearing retainer is configured to be located on the upper surface of the guide rail, The retained circular needle bearing retainer is composed of a semicircle so that it can circulate smoothly at both ends of the outsleeve, and an inside of the semicircle is equipped with an R-Piece formed by a circulating groove guide, and an outer end cap (End cap) Cap) can be provided to provide a circular needle bearing retainer assembled in a polygonal structure, which is highly industrially applicable.

Claims (8)

In the infinite stroke polygon needle bearing guide,
A guide rail installed inside the outer sleeve and fastened to the circular needle bearing retainer to guide the endless circulation of the circular needle bearing retainer;
A circular needle bearing retainer positioned above the guide rail to hold the needle bearing and to circulate indefinitely; And
And an endless stroke polygon needle bearing guide having a circulation groove formed to penetrate in the axial direction of the out sleeve so that the circulation needle bearing retainer passing through the inner surface of the out sleeve can be infinitely circulated. The method according to claim 1,
The circular needle bearing retainer holding the needle bearing is composed of a semi-circle so as to smoothly circulate at both ends of the out sleeve,
An alpis positioned inside the semicircle to guide the circulating needle bearing retainer to a circulating groove; And
An endless stroke polygon needle bearing guide, positioned outside the semicircle, and equipped with an end cap for guiding the circulating needle bearing retainer to the circulating groove. The method according to claim 1,
The circular needle bearing retainer may include: a lip formed to face each other at a predetermined angle to hold the needle bearing at a minimum curvature during circulation to hold the needle bearing;
Connection member for connecting the lip and the lip formed to face each other at a predetermined interval;
Connecting rings installed on the left and right sides of the needle bearing retainer for connecting the lips facing each other to hold the needle bearings; And
At both ends of the retainer in the axial direction, the connecting member is formed of a cut surface,
Endless stroke polygon needle bearing guide, characterized in that formed in a flat shape with a constant width. The method according to claim 3,
The connecting ring is an infinite stroke-type polygon needle bearing guide characterized in that the protruding in the left and right width direction in order to prevent the separation is located on the upper surface of the guide rail when engaged with the circular needle bearing guide. The method according to claim 3 or 4,
The linking ring may be located at the center of the lip holding the needle bearing, and is formed by rotating inward in the endless rotation or in the rotating outward direction in consideration of the bearing capacity and durability of the lip holding the needle bearing. Endless stroke polygon needle bearing guide, characterized in that formed by. The method according to any one of claims 1 to 4,
The circular needle bearing retainer is formed by integrally forming a connecting ring that is connected to the lip and the lip facing each other to hold the needle bearing so as not to be separated from the guide rail when located on the upper surface of the guide rail. Endless stroke polygon needle bearing guide. The method of claim 6,
The circular needle bearing retainer is an infinite stroke polygon needle bearing guide, characterized in that made of a synthetic resin material having flexibility and durability to bend in a semicircle at both ends of the outer sleeve to circulate infinitely. The method according to claim 5,
Infinite stroke polygons characterized in that the needle holding the needle bearing is formed at a predetermined angle or two or more at regular intervals in consideration of the supporting force, frictional force and materials required to form the lip bearing the needle bearing Needle bearing guide.

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