KR100679680B1 - A linear guide - Google Patents

Abstract

A linear guide is provided to couple a sliding table integrally formed with a guide recess and a slider with a base by roller bearings to reduce manufacturing processes. In a linear guide, a base(300) has a protruded slider(200) having guide recesses(230). A stopper bolt(220) is protruded from the base to penetrate the slider. A sliding table(100) has a recess to receive the slider, guide recesses(130) formed at side walls of the recesses, and a stopper guide recess(150) to receive the stopper bolt. Plural roller bearings(400) are respectively inserted into the guide recesses formed in the slider and the sliding table. And a separation preventing stopper is fixed to one of the sliding table and the slider to prevent the roller bearing from escaping. The separation preventing stopper includes separation preventing screws(160) fixed to lateral ends of one of the guide recesses formed in the sliding table and the slider. The separation preventing stopper further includes front and rear covers fixed to front and rear sides of one of the sliding table and the slider.

Description

Linear guide {A linear guide}

1 is an exploded perspective view showing a conventional linear guide cylinder,

2 is a perspective view showing a coupled state of the linear guide according to the first embodiment of the present invention,

3 is an exploded perspective view illustrating an exploded state of the linear guide according to the first embodiment of the present invention;

4 is a cross-sectional view showing a cross section of a linear guide according to a first embodiment of the present invention;

5 is a perspective view showing a coupled state of the linear guide according to the second embodiment of the present invention,

6 is an exploded perspective view illustrating an exploded state of the linear guide according to the second embodiment of the present invention;

7 is a perspective view showing a coupled state of the linear guide according to the third embodiment of the present invention,

8 is an exploded perspective view illustrating an exploded state of the linear guide according to the third embodiment of the present invention;

9 is a perspective view showing a coupled state of the linear guide according to the fourth embodiment of the present invention,

10 is an exploded perspective view showing an exploded state of the linear guide according to the fourth embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: slide table 110, 120: screw groove

130,230: guide groove 140,240: release prevention screw groove

150: stopper guide groove 160: release prevention screw

200: slider 210: stopper engaging groove

220: stopper bolt 300: base

310: fastening groove 400: roller bearing

510,520: front and rear cover 530: cover coupling groove

The present invention relates to a linear guide, and more particularly, in a linear guide for linearly moving a roller bearing intersected at right angles by rolling means, forming a guide groove integrally formed on a slide table, and the guide groove and the base. It relates to a linear guide that can be secured to the feed accuracy without the need for a separate preload after the coupling, by coupling the roller bearing to the guide groove formed in the.

In general, as in industrial machine tools, robots, automatic tool changers, and various general machines, a ball bearing unit for linear motion is mounted on a part that is linearly slid to guide the object linearly from a reference position to a desired position. The ball bearing units for linear motion that are used and developed for this purpose are commonly referred to as linear guides.

Such linear guides are largely divided into ball type and roller type according to the type of sliding means when the table is moved. The ball type has the advantage that it can be applied to a high-precision device because smooth movement can be obtained when the table is moved. There is a disadvantage in that the rigidity is weak, and the roller type has the advantage that the rigidity is stronger than the above-described ball type, but there is a problem in assemblability and workability due to the combination of the rollers.

Among the types of linear guides as described above, there is a utility model publication No. 382828 (application number: 2005-0002140, name of the invention: cage roller of high precision linear guide cylinder).

1 is an exploded perspective view showing a conventional linear guide cylinder.

As shown in the drawing, a conventional linear guide cylinder includes a cylinder block 1 having a pair of cylinder chambers 11 and a pair of pistons 2 for forward and backward operation of the cylinder chambers 11. And a piston rod 3 having one side assembled to the piston 2, a slider 4 coupled to an upper portion of the cylinder block 1, and a forward and reverse operation along the cylinder block 1, A slide table (5) having guide rails (6) mounted on both lower sides thereof to be guided by a slider (4), a support plate (51) coupled to a tip of the slide table (5), and the slider (4). A cage roller 82 accommodated in the cage 81 along the guide grooves formed on both sides and the respective guide rails 6, a torsion preventing device 7 for adjusting the advancement of the piston 2, and the cylinder block ( It is configured to include a buffer plate (9) coupled to the rear end of 1).

In the conventional linear guide configured as described above, the cage roller is inserted through the guide groove formed in the slider coupled to the cylinder block and the guide rail coupled to the slide table, so that there is no elastic displacement against the load acting on the slide table. Since it is possible to transfer, it has been widely applied to precision instruments such as various measuring instruments and printed boards, automatic lathes and electric discharge machines.

However, despite these advantages, the conventional linear guide has the following problems.

First, as the guide rail is fixed to the slide table through bolts and the slide table is coupled to the slider, there is a problem that the manufacturing cost is expensive as the device becomes complicated and the manufacturing process becomes complicated.

Second, when inserting the cage roller between the guide rail and the slider, there is a problem in use because it is pre-loaded with bolts to closely adhere the cage roller to the guide groove,

Third, tolerances are generated by loosening the bolts fixed to the guide rails by repeated front and rear movements of the guide rails and the sliders, and these tolerances cause a feed error during the movement, which, of course, causes a drop in the feeding accuracy. There was a problem that it is difficult to secure the degree of movement by promoting wear.

Fourth, in order to solve the problem that the transfer error occurs, it is necessary to apply a preload to the linear guide again, there was a problem in use.

The present invention has been made to improve the above-mentioned conventional problems, in the linear guide for linearly moving the roller bearings to the rolling means, the roller bearing inserted into the slide table and the guide grooves formed on the base at right angles to each other through the coupling In order to prevent the separation of the roller bearing, the separation prevention stopper is fixed, and thus it is possible to maintain a feeding precision without applying preload, and to provide a linear guide that can reduce the production cost by simplifying the manufacturing process.

As a means for achieving the above object, the groove is formed so that the guide groove is formed in both sides in the longitudinal direction and the groove is formed so that the stopper bolt and the slider protruding through the slider from the base is inserted, the grooves on both side walls Guide grooves are formed respectively, and a roller is fixed to any one of a plurality of roller bearings and slide tables or sliders respectively inserted into a slide table and a slider formed with a stopper guide groove into which a stopper bolt is inserted in the center and a guide groove formed in the slide table. It is configured to include a separation prevention stopper to prevent the separation of the bearing, it is characterized in that it can be easily used without reducing the production cost by reducing the manufacturing process and additional preload during use.

Preferably, the separation prevention stopper is made of a separation prevention screw fixed to both ends of any one of the guide grooves formed in the slide table or the slider, it characterized in that the separation of the roller bearing.

Preferably, the separation prevention stopper is made of a front, rear cover is fixed to the front and rear of any one of the slide table or the slider, it characterized in that to prevent the separation of the roller bearing.

Preferably, the preload is adjusted by adjusting the diameter of the roller bearing according to the size of the guide groove, and the roller may be prevented from wearing out by equalizing the diameter deviation of the roller bearing.

Preferably, at least one or more threaded grooves are formed on at least one of the top, front, rear, left, and right surfaces of the slide table, so that the object to be transferred can be easily mounted in the threaded groove.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. First, in adding reference numerals to components of each drawing, it should be noted that the same components as in the prior art have the same number as much as possible even if displayed on different drawings.

Hereinafter, the linear guide according to the first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view illustrating a state in which the linear guide according to the first embodiment of the present invention is coupled, and FIG. 3 is an exploded perspective view illustrating a disassembled linear guide according to the first embodiment of the present invention. Is a cross-sectional view showing a cross section of the linear guide according to the first embodiment of the present invention.

As shown in the figure, the linear guide according to the first embodiment of the present invention, the slide table 100, the guide groove 130 is formed on both sides of the groove portion, and both sides to be seated in the groove portion of the slide table 100 Comprising a base 300 is formed integrally with the slider 200, the guide groove 230 is formed, and the roller bearing 400 is inserted into the slide table 100 and the guide grooves 130, 230 formed in the slider 200 Is done.

In the above configuration, both side surfaces of the slide table 100 and the slider 200 are formed with anti-separation thread grooves 140 and 240, respectively, wherein the anti-separation screw grooves 140 and 240 are separated from the roller bearing 400 to the outside. In order to prevent that, the slide table 100 and the front and rear sides of the slider 200 are formed, respectively, the separation prevention screw groove 140, 240 formed in this way is made by coupling the separation prevention screw 160, respectively.

The slide table 100 may be formed by cutting steel, the groove portion of the 'c' shape is formed so that the slider 200 can be inserted into the bottom surface, the inner surface of the groove portion formed as described above Guide groove 130 of the 'V' type is further formed in the longitudinal direction so that the roller bearing 400 can be coupled.

At this time, the guide groove 130 is formed to further concave the inner edge by a certain depth so that the edge portion of the roller bearing 400 in contact with the edge of the guide groove (130,230) during friction of the roller bearing 400 is generated By preventing it, it is preferable to prevent the edges of the roller bearing 400 from being worn. In addition, a stopper guide groove 150 having a predetermined width and length is further formed in the groove portion of the slide table 100 in the longitudinal direction, so that the stopper bolt to be described later in the stopper guide groove 150 when the slide table 100 is moved. 220 is applied to limit the moving range of the slide table (100).

The front, rear, left and right surfaces and the upper surface of the slide table 100 are further formed with screw grooves (110, 120) for fixing the animal. At this time, the screw grooves (110, 120) can be applied differently to the number and formation position according to the use of the linear guide.

In the above configuration, the base 300 is formed with a plurality of fastening grooves 310 for fixing and protruding from the central portion, the slider 200 is formed with a guide groove 230 in the longitudinal direction on both sides integrally further Formed. At this time, the fastening groove 310 is preferably formed by a concave portion formed by a predetermined width so that the head of the bolt does not protrude when the bolt is coupled.

On the other hand, the guide groove 230 has the same shape as the guide groove 130 formed in the slide table 100 described above. In addition, a stopper coupling groove 210 penetrates the bottom surface of the base 300, and a stopper bolt 220 for restricting the movement of the slide table 100 is fixed to the stopper coupling groove 210. It is done.

 In the above configuration, the roller bearing 400 may be applied to the cylindrical roller bearing 400 made of a metal material such as steel or alloy, formed in the guide groove 130 and the slider 200 formed in the slide table 100 Inserted and installed between the guide grooves 230, the roller bearings 400 are installed to cross each other at right angles along the guide grooves 130 and 230 of the 'V' type. Alternatively, the roller bearing 400 may be applied to a conventional roller bearing cage in which a plurality of roller bearings 400 are crossed and fixed to the cage.

The size of the roller bearing 400 is applied differently according to the dimensions of the guide groove 230, so that the preload adjustment is performed so that the roller bearing 400 is in close contact with the guide grooves 130 and 230 in the step of inserting the roller bearing 400. This will be described in detail in the following description of the coupling and action.

Hereinafter, the coupling and the operation state of the linear guide according to the first embodiment of the present invention will be described with reference to FIGS. 2, 3, and 4.

As shown in the figure, the linear guide having the configuration as described above, after the stopper bolt 220 is fastened to the stopper coupling groove 210 formed in the base 300, the 'c' type formed in the slide table 100 The groove is seated in accordance with the slider 200 formed on the base 300, and the roller bearing 400 is inserted into the inner grooves (130, 230) formed on both sides of the slide table 100 and the slider 200 to cross at right angles. Preload adjustment is performed by calculating the size of the roller bearing 400 according to the dimensions of the guide grooves 130 and 230 and selecting and inserting the roller bearing 400 according thereto.

As such, when the insertion of the roller bearing 400 is completed, the release preventing screw 160 is fastened to the release preventing screw grooves 140 and 240 formed on the side surfaces of the slider 200 of the slide table 100 and the base 300 so as to secure the roller bearing. The departure of the 400 will be prevented.

On the other hand, if the above-described preload adjustment in more detail, the conventional linear guide has a preload adjustment screw is formed on both sides of the slide table to adjust the preload by closely contacting the guide rail with the roller bearing inserted through the preload adjustment screw It was. In contrast, the linear guide of the present invention does not include a guide rail, and forms guide grooves 130 and 230 integrally formed in the slide table 100 and the slider 200, respectively, to measure the dimensions of the guide grooves 130 and 230. And by calculating the diameter of the roller bearing 400 according to the size of the measured dimensions, and by inserting the produced roller bearing 400 is preload adjustment so that the roller bearing 400 is in close contact with the guide grooves (130,230). It can be. Therefore, since the inserted roller bearing 400 becomes uniform without dimensional deviation, it is possible to solve the problem that the wear of the bearing and the accuracy during the transfer of the slide table 5 due to the deviation of the roller bearing in the related art are not easily obtained. Will be.

As described above, the linear guide of the present invention having the coupling and acting is bolted to the base 300 through the fastening groove 310 to the element to be linearly guided from the reference position to the desired position, as in various general machines. Fixing and fixing the object to be transferred by the bolt to the screw grooves (110, 120) formed on the side and the upper surface of the slide table 100, the slide table 100 can be a linear movement in the front and rear direction.

Hereinafter, a linear guide according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, detailed descriptions of the same components as those of the above-described first embodiment will be omitted, and other components and their operations will be described.

5 is an exploded perspective view showing a linear guide coupled state according to a second embodiment of the present invention, Figure 6 is an exploded perspective view showing a disassembled linear guide according to a second embodiment of the present invention.

As shown in the figure, the linear guide according to the second embodiment of the present invention, the slider table 200 and the guide grooves (130, 230) are formed on both sides, the slider 200 having a plurality of fastening grooves 310 are formed on the upper surface ) And a roller bearing 400 inserted into the guide grooves 130 and 230.

In the above configuration, the slider 200 is made of the same configuration as the slider 200 formed integrally with the base 300 of the first embodiment, a plurality of fastening grooves 31 are formed on the upper surface, the stopper bolt on the upper surface The stopper coupling groove 210 is further formed to allow the 220 to be fixed.

With the above configuration, the linear guide of the second embodiment does not include the base 300, and the fastening groove 310 is formed in the slider 200, and the fastening groove formed in the slider 200 when the linear guide is installed. Through the 310 can be fixed by fastening the bolt, as the linear guide is simplified, there is an easy point when applied to the device having a narrow installation space.

7 is an exploded perspective view showing a linear guide coupled state according to a third embodiment of the present invention, Figure 8 is an exploded perspective view showing a disassembled linear guide according to a third embodiment of the present invention.

As shown in the drawings, the linear guide according to the third embodiment of the present invention, the slide table 100, the front and rear covers (510, 520) coupled to the front and rear of the slide table 100, the upper Slider 200 is formed integrally and consists of a base 300 having guide grooves 230 formed on both sides of the slider 200, and a roller bearing 400 inserted into the guide grooves (130, 230).

In the above configuration, the slide table 100, as in the first embodiment, the guide groove 130 is formed on both sides of the groove portion, and the front cover 510 on the front and rear of the slide table 100 Cover coupling grooves 530 are further formed to allow the rear cover 520 to be coupled to each other, and screw grooves 110 and 120 are further formed on both sides and the upper surface of the slide table 100 to fix the veterinary animal.

On the other hand, a stopper coupling groove 210 is formed on the bottom surface of the slide table 100, and a stopper bolt 220 for restricting the movement of the slide table is fixed to the stopper coupling groove 210.

In the above configuration, the front and rear covers 510 and 520 are formed in a 'c' shape as the cross section of the slide table 100, and stoppers for fixing to the slide table 100 at both ends of the covers 510 and 520. Coupling grooves 210 are formed respectively. In addition, the material may be light aluminum.

In the above configuration, the base 300 is made in the same manner as in the first embodiment, the separation preventing screw groove 240 is not formed, the stopper guide groove 150 is formed in the longitudinal direction on the upper surface of the slider 200 It is done.

With the configuration as described above, after the stopper bolt 220 is fastened to the stopper coupling groove 210 formed in the slide table 100, a slider formed at the base of the 'c' type groove formed in the slide table 100 ( 200 and the roller bearing 400 is inserted into the guide grooves 110 and 120 formed at both sides of the slide table 100 and the slider 200 so as to cross at right angles. As such, when the insertion of the roller bearing 400 is completed, the front and rear covers 510 and 520 are coupled to the front and rear surfaces of the slide table 100 through bolts, respectively, to prevent the roller bearing 400 from being separated.

9 is an exploded perspective view showing a linear guide coupled state according to a fourth embodiment of the present invention, Figure 10 is an exploded perspective view showing a disassembled linear guide according to a fourth embodiment of the present invention.

As shown in the figure, the linear guide according to the fourth embodiment of the present invention is configured in the same way as the slide table 100 of the first embodiment, the screw groove 120 is provided on the side without the separation preventing screw groove 140 Before the slide table 100 is formed, the guide groove 230 is formed on the side and the slider 200 is formed on the upper surface and a plurality of fastening grooves 310 are formed on the front and rear of the slider 200, It consists of a roller bearing 400 inserted into the rear cover (510, 520) and the guide groove (230). In addition, a stopper coupling groove 210 is further formed on the upper surface of the slider 200, and the stopper bolt 220 is fixed to the stopper coupling groove 210.

With the above configuration, the slider 200 is inserted into the slide table 100 and the roller bearing 400 is inserted into the guide grooves 130 and 230 so that the front cover 510 and the rear cover 520 are sliders. It is fixed to the front and rear surfaces of the 200 to prevent the separation of the roller bearing 400 inserted into the guide grooves (130, 230).

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, the linear guide of the present invention, the slide table integrally formed with the guide groove and the slider formed with the guide groove are coupled to the base through which the roller bearing is formed, thereby reducing the manufacturing process and reducing production costs, as well as assembly. Since there is no need to preload the roller bearing afterwards, it is easy to use.

Claims (5)

delete A base 300 having protrusions 200 formed on both sides of guide grooves 230 in a longitudinal direction, a stopper bolt 220 protruding from the base 300 through the slider 200, and the sliders; A groove table is formed to insert 200, guide grooves 130 are formed on both side walls of the groove portion, and a stopper guide groove 150 into which the stopper bolt 220 is inserted is formed in the slide table 100. And a plurality of roller bearings 400 respectively inserted into the guide grooves 130 and 230 formed in the slider 200 and the slide table 100 and fixed to either the slide table 100 or the slider 200. In the linear guide consisting of a separation prevention stopper for preventing the separation of the roller bearing 400, The departure prevention stopper is characterized in that consisting of the separation prevention screw 160 is fixed to both ends of any one of the guide grooves (130,230) formed in the slide table (100) or the slider 200, respectively. Linear guide. The method of claim 2, The departure prevention stopper is a linear guide, characterized in that consisting of the front, rear cover (510, 520) is fixed to the front and rear of any one of the slide table (100) or the slider (200). The method of claim 2 or 3, Linear guide, characterized in that the preload adjustment by adjusting the diameter size of the roller bearing 400 according to the size of the guide groove (130,230). The method of claim 2 or 3, Linear guide, characterized in that at least one screw groove (110,120) is formed on one or more of the top, front, rear, left and right surfaces of the slide table (100).

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