KR100454344B1 - Ball break away prevent construction of liner mortion - Google Patents

Abstract

PURPOSE: Structure for preventing displacement of a ball for a linear motion guide is provided to decrease the failure rate in assembling by improving working efficiency, and to reduce cost and the size of the linear motion guide by removing the package for fixing plural balls. CONSTITUTION: A linear motion guide(20) comprises a slider(18) including a block(22) having a passage(26) longitudinally formed in a side wall(24) and a guide groove(28) longitudinally formed in the side wall, a cover(38) installed in the front and rear parts of the block and composed of a U-shaped outlet(40) connected to the passage and the guide groove, and plural balls(30) arranged in a line along the guide groove, the passage and the U-shaped outlet, and a rail(6) including a guide groove(42) combined with the balls. A fixing part(32) is formed longitudinally in the inlet of the guide groove of the block to prevent displacement of the ball.

Description

Ball break away prevent construction of liner mortion

The present invention relates to a ball separation prevention structure for the LM guide, in particular, to prevent the ball from being separated from the slider block when disassembling or assembling the LM guide, to improve the assemblability and to reduce the defective rate generated during assembly In addition, the present invention relates to a ball separation prevention structure for an LM guide, which realizes a structure that eliminates the use of a package for fixing a plurality of balls, thereby making it possible to reduce the size of the LM guide, reduce the production cost, and shorten the work process.

In general, the LM guide is used to transfer parts and various materials produced in manufacturing equipment, or to transfer a processing device, etc., and is mainly applied in a linear movement.

The LM guide is used to combine a plurality of balls so that the linear motion can be made smoothly, the plurality of balls are easy to install by setting in the package to prevent them from being separated, but the LM guide can be miniaturized It is impossible and there is a drawback that the price of production rises.

In particular, since the package is not applied to the small LM guide, and only a plurality of balls are put into use, when the disassembly and assembly are not required, the balls are separated and the failure rate is increased to increase the defective rate.

Meanwhile, in the related art, sidewalls 108 are formed on both sides of the block 106 of the slider 104 constituting the LM guide 102, as shown in FIG. The passage 110 is formed to penetrate along the longitudinal direction, and the guide groove 112 is formed on the inner surface of the side wall 108.

The guide surface 114 is formed to extend in a straight line at the tip of the guide groove 112.

In addition, the passage 110 and the guide groove 112 is a plurality of balls 116 are put into contact with each other so as to make a cloud movement, wherein a part of the ball 116 from the inlet of the guide surface 114 to the outside It will protrude.

The cover 106 is installed at the front and rear ends of the block 106, each of which has a cover for changing a traveling direction of the ball 116.

A rail 118 for guiding the movement of the slider 104 is positioned between the side walls 108, and guide grooves 120 are formed in both side walls of the rail 118 along the length direction, and the guide grooves A ball 116 protruding from the guide groove 112 of the block 106 is engaged with the 120.

Referring to the coupling sequence and operation of the prior art configured as described above are as follows.

First, when a plurality of balls 116 are introduced into the guide surface 112 of the block 106 and pushed in one direction while flowing in the passage 110, the rolling motions are brought into close contact with each other while allowing the rolling movement of the balls. 116 is arranged while being arranged in a line over the guide groove 112 and the passage 110 and the cover not shown.

When the slider 104 is coupled to the rail 118 in the above state, the ball 116 is engaged with the guide groove 112 of the block 106 and the guide groove 120 of the rail 118, respectively. .

At this time, when the slider 104 is moved along the rail 118, the ball 116 located in the guide groove 112 is moved while moving in the rolling direction, the ball 116 is not shown continuously After the cover and the passage 110 and the cover in order to move back to the original guide groove 112, the circular movement, the circular movement proceeds at the same time as the slider 104 moves along the rail 118 do.

Conventional LM guide 102 used as described above is because there is no separate fixing means for preventing the ball 116 located in the guide groove 112 of the block 106 is separated, the ball 116 Since it is left to be separated from the guide groove 112, there is a defect that the failure rate is high when assembling the slider 104 to the rail 118, and also requires the skill of the operator.

The present invention has been made in order to solve the above problems, the object of which is to prevent the detachment of the ball of the slider to improve the workability, while also simplifying the assembling work even during the assembling work The purpose is to reduce the defective rate generated.

Another object is to make it possible to eliminate the use of a package for fixing a large number of balls, to shorten the work process, to reduce the production cost and to miniaturize the LM guide.

1 is a perspective view of a state in which an embodiment of the present invention is installed.

Figure 2 is an exploded perspective view showing an embodiment of the present invention.

Figure 3 is a cross-sectional view showing a combined state of the present invention.

Figure 4 is a cross-sectional view showing a combined state of the present invention.

Figure 5a, 5b is a perspective view showing the process of manufacturing the pad of the present invention.

6 is a cross-sectional view showing a conventional embodiment.

* Explanation of symbols for the main parts of the drawings

2: Conveyor 4: Table 6: Rail

8: motor 10: belt 12: ball screw

14: Load 16: Palette 18: Slider

20: LM guide 22: Block 24: side wall

26: passage 28: guide groove 30: ball

32: Fixed part 34: Notch 36: Pad

38: Cover 40: Outlet 42: Guide groove

According to the present invention, there is provided a block (22) formed with a passage (26) formed in the sidewall (24) along the longitudinal direction, and the guide groove (28) formed in the inner surface of the sidewall (24); A cover 38 installed at the front and rear ends of the block 22 and having a U-shaped outlet 40 connected to the passage 26 and the guide groove 28 therein; A plurality of balls 30 arranged in a line along the guide groove 28, the passage 26, and the U-shaped outlet 40; a slider 18 is formed, and the ball 30 In the LM guide (20) consisting of rails (6) formed on both sides along the longitudinal direction of the guide grooves (42) for engaging and sliding with a part of the guide grooves (28) of the block (22) inlet ball ( Fixing portion 32 to prevent the separation of 30 has a structure provided along the longitudinal direction.

As described above, the present invention is used as installed in the transfer device 2 for transporting materials of various manufacturing equipment, as shown in FIG. 1.

First, the conveying apparatus 2 is configured with a table 4 having a predetermined width installed thereon with a pair of rails 6, and a motor 8 for providing power to the rear side of the front end of the table 4 includes a bracket. It is fixedly installed, and a part of the belt 10 is wound around the motor 8 and installed.

The ball screw 12 is coupled to another part of the belt 10, and the ball screw 12 is provided with a pallet 16 for transferring the load 14 while moving by the power transmitted, the pallet Sliders 18 are provided on both sides of the back of the track 16 to slide on the rail 6 and move.

Looking at the LM guide 20 is configured by coupling the slider 18 and the rail 6 in Figures 2 to 4 as follows.

First, the slider 18 (refer to FIG. 2) includes a block 22 formed in a “c” shape. Sidewalls 24 facing downward are formed on both sides of the block 22, and the sidewalls 24 ( Referring to FIG. 4, a passage 26 penetrated in the longitudinal direction is formed inside, and a guide groove 28 is formed in the inner side surface of the side wall 24 in the longitudinal direction.

At this time, a plurality of balls 30 are installed in the passage 26 and the guide groove 28 while contacting each other in a cloud movement to enable the rolling motion, and the ball 30 disposed at the inlet of the guide groove 28 is separated from the outside. The fixing part 32 (refer FIG. 2) which prevents a thing is provided along the longitudinal direction.

The fixing part 32 is formed in the upper and lower guide grooves 28, the inlet side of the notch 34 is formed along the longitudinal direction to form the pads 36, respectively, each pad 36 is a guide groove ( 28) It is bent inwardly so that the ball 30 is formed to be able to make a rolling contact with some surface.

Therefore, a part of the ball 30 is located in the guide groove 28, and part of the ball is projected to the outside through the pad 36, wherein the end of the pad 36 is located outside the center of the ball 30 In that regard, the ball 30 is in a state where the departure from the guide groove 28 is prevented.

Subsequently, the cover 38 is assembled by screws at the front and rear ends of the block 22, and the cover 38 (see FIG. 4) is connected to the end of the passage 26 and the end of the guide groove 28. The U-shaped outlet 40 is connected to each other while being located on the same line as each other, and a plurality of balls 30 are provided in close contact with each other while in contact with each other.

On the other hand, the guide grooves 42 are formed on both sides of the rail 6 coupled to the slider 18 along the longitudinal direction, and the guide grooves 42 (see FIG. 3) have a ball projecting between the pads 36. A portion of 30) will be engaged.

Referring to the binding sequence and operation of the present invention configured as described above are as follows.

First, as shown in FIG. 5A, a plurality of balls 30 (see FIG. 4) are inserted into the guide grooves 28 formed in the block 22 of the slider 18 while being in close contact with each other. When pushed to one side to flow into the outlet 40 of the cover 38, the ball 30 is pushed by the ball 30 is continuously introduced into the passage 26 of the block 22 is filled You lose.

Therefore, the plurality of balls 30 are arranged in a rolling contact with each other to enable the rolling motion throughout the guide groove 28, the outlet 40 and the passage 26.

In the above state, as shown in FIG. 5B, the end of the tool is inserted into the notches 34 respectively positioned at the upper and lower portions of the guide groove 28, and then the pad 36 is inserted into the guide groove 28. When pushed in the direction, the pad 36 is bent by a tool and the inner surface is brought into rolling contact with the surface of the ball 30, and at the same time, the end of the pad 36 is positioned away from the center of the ball 30 by a predetermined length. As a result, the ball 30 is in a state where separation is prevented.

Therefore, the ball 30 is located on the guide groove 28 side on the basis of the pad 36 end portion, the outside is in a state exposed.

When the slider 18 (see FIG. 4) is coupled to the rail 6 thereafter, the rail 6 is positioned between the side walls of the block 22 and the ball partially exposed to the outside of the guide groove 28. The LM guide 20 is completed by being assembled with the guide groove 42 of the rail 6.

When the LM guide 20 assembled as described above is installed and used in the transfer device 2 (see Fig. 1), it acts as follows.

First, when the motor 8 is operated by the control panel (not shown), power is transmitted through the belt 10 to operate the ball screw 12, which causes the pallet 16 to load along the ball screw 12. (14) is moved, and the slider 18 provided on both sides of the pallet 16 moves along the rail 6 at the same time.

When the slider 18 (see Fig. 4) is moved as described above, the ball 30 located in the guide groove 28 of the rail 6 and the block 22 moves while moving in the rolling direction.

As the ball 30 continues to flow from the end of the guide groove 28 to the inlet 40 of the outlet of the cover 38, the direction of travel is changed, the passage 26 and the cover 38 of the block 22 Through the outlet 40 of the sequential movement to return to the guide groove 28 is the first position, the circular movement of the ball 30 as described above is the slider 18 along the rail (6) If you move, it will happen continuously.

Therefore, the present invention prevents the ball 30 from being detached from the pad 36 formed by bending the guide groove 28 inlet side of the slider 18, thereby improving workability and thus simplifying the assembling work. In addition, the defect rate generated during assembly is reduced, and the use of a package for setting a plurality of balls 30 can be eliminated, so that the work process can be shortened, the production cost can be reduced, and the LM guide can be miniaturized. .

Claims (4)

A block 22 having a passage 26 penetrated in the longitudinal direction in the side wall 24 and a guide groove 28 formed in the longitudinal direction on the inner surface of the side wall 24; A cover 38 installed at the front and rear ends of the block 22 and having a U-shaped outlet 40 connected to the passage 26 and the guide groove 28 therein; Slider 18 is composed of a plurality of balls 30 are arranged in a row along the guide groove 28, the passage 26 and the discharge port 40, In the LM guide 20 consisting of a rail (6) formed on both sides along the longitudinal direction of the guide groove 42 for sliding and engaging with a portion of the ball 30, The LM guide ball separation prevention structure, characterized in that the fixing portion 32 for preventing the separation of the ball 30 in the guide groove 28 inlet side of the block 22 is provided along the longitudinal direction. The method of claim 1, The fixing part 32 is a ball departure prevention structure for the LM guide, characterized in that the pad 36 is formed along the longitudinal direction at the inlet side of the guide groove 28. The method of claim 2, The pad 36 is bent in the inner direction of the guide groove 28 to protrude a portion of the ball 30 to the outside, while contacting a part surface of the ball 30, the ball separation prevention for LM guide rescue. The method of claim 2, The pad 36 is a ball separation prevention structure for the LM guide, characterized in that the notch 34 is formed on the inlet side of the guide groove 28.