KR20200012539A - Sliding block assembly - Google Patents

Abstract

One embodiment of the present invention provides a sliding block assembly comprising: a slider including a base block on which a load supporting track wherein a plurality of balls are circulated and a non-loading track are formed, and a circulation guide block coupled to both sides of the base block and interconnecting the load supporting track and the non-loading track; and a guide rail guiding movement of the slider. The base block has: a body unit on which the load supporting track and the non-loading track are formed; and leg units paired in a spaced state and connected to a lower part of the body unit, and forming a guide insertion unit into which both ends of the guide rail are inserted.

Description

Sliding Block Assembly {SLIDING BLOCK ASSEMBLY}

The present invention relates to a sliding block assembly, and more particularly to a sliding block assembly configured to prevent the occurrence of twisting of the slider.

Generally the sliding block assembly comprises a slider and a rail.

This sliding block assembly is such that the slider moves linearly along the rail. Here, the slider is in rolling contact with the rail by a plurality of balls moved along a predetermined track, and makes a linear motion along the longitudinal direction of the rail.

1 is a cross-sectional view illustrating a conventional sliding block assembly.

As shown in FIG. 1, the sliding block assembly 10 includes a slider 20, a rail 30 and a ball 40.

The plurality of balls 40 are rotated in contact with the slider rolling groove 21 formed in the slider 20 and the rail rolling groove 31 formed in the rail 30 in a rolling contact. Thus, the slider 20 may be moved along the longitudinal direction of the rail 30 by the rotation of the ball 40.

However, the conventional sliding block assembly 10 is a slider 20 that is moved along the rail 30 when a play occurs between the slider 20 and the rail 30 due to, for example, wear of the ball 40. Torsion may occur.

The occurrence of the torsion of the slider 20 may be biased in any direction with respect to the central axis of the slider 20 while the slider 20 moves. Due to such a bias of the force, the slider 20 may not move smoothly along the rail 30.

In addition, when the torsion of the slider 20 is severe, a problem may occur in which the moving distance of the slider 20 set by the controller (not shown) and the actual moving distance of the slider 20 are different.

Prior Document 1: Korean Patent Registration No. 10-1602228 (2016.03.04)

The technical problem of the present invention for solving the above problems is to provide a sliding block assembly made to prevent the occurrence of twisting of the slider.

In order to achieve the above technical problem, an embodiment of the present invention is a base block formed with a load supporting track and a no-load track circulating a plurality of balls, coupled to both sides of the base block and the load supporting track and a no-load track A slider having a circulating guide block interconnecting the loops; And a guide rail for guiding the movement of the slider, wherein the base block includes: a body portion in which the load supporting track and the unloading track are formed; Provided as a pair of spaced apart and connected to the lower portion of the body portion, there is provided a sliding block assembly having a leg portion forming a guide insertion portion is inserted both ends of the guide rail.

In one embodiment of the present invention, the leg portion, the first extension leg connected to the body portion; And a second extension leg that is bent from the first extension leg to form the guide insertion portion, wherein the first extension leg may be provided outside the first vertical line which is a virtual vertical line of the unloaded track.

' 형상을 이루며, 바닥면에 지지되는 레일 지지부; 및 상기 레일 지지부의 단부로부터 외측으로 연장되며, 상기 가이드 삽입부에 삽입되는 레일 연장부를 포함하며, 상기 레일 지지부의 폭은 상기 슬라이더의 중심축(C)을 기준으로 대칭을 이루는 상기 하중 지지 트랙의 중심점을 연결한 폭과 동일하거나 더 좁게 형성될 수 있다.In one embodiment of the present invention, the guide rail,

A rail support portion forming a shape and supported on the bottom surface; And a rail extension extending outward from an end of the rail support and inserted into the guide insert, wherein the width of the rail support is symmetrical with respect to the center axis C of the slider. It may be formed to be the same or narrower than the width connecting the center point.

In one embodiment of the present invention, when the slider and the guide rail are coupled, the rail support may be formed to form a ball screw insertion space.

In one embodiment of the present invention, the leg portion, the first extension leg connected to the body portion; And a second extension leg that is bent from the first extension leg to form the guide insert, wherein the first extension leg may be provided inside a second vertical line that is an imaginary vertical line of the load supporting track.

' 형상을 이루며, 바닥면에 지지되는 레일 지지부; 및 상기 레일 지지부의 단부로부터 내측으로 연장되며, 상기 가이드 삽입부에 삽입되는 레일 연장부를 포함하며, 상기 레일 지지부의 폭은 상기 슬라이더의 중심축(C)을 기준으로 대칭을 이루는 상기 무하중 트랙의 중심점을 연결한 폭보다 넓게 형성될 수 있다.In one embodiment of the present invention, the guide rail,

A rail support portion forming a shape and supported on the bottom surface; And a rail extension part extending inwardly from an end of the rail support part and inserted into the guide insertion part, wherein the width of the rail support part is symmetrical with respect to the center axis C of the slider. It may be formed wider than the width connecting the center point.

In one embodiment of the present invention, when the slider and the guide rail are coupled, a pair of spaced apart leg portion may be formed to form a ball screw insertion space.

In one embodiment of the present invention, a rolling groove for supporting the ball disposed on the load supporting track is formed on the upper surface of the rail extension, pin guide groove may be formed on the lower surface of the rail extension.

In one embodiment of the present invention, the torsion prevention pin coupled to the leg portion may be moved along the pin guide groove.

In one embodiment of the present invention, the torsion preventing pin may be provided between the first vertical line which is a virtual vertical line of the unloaded track and the second vertical line which is a virtual vertical line of the load bearing track.

In one embodiment of the present invention, the friction coefficient (μ) of the torsion prevention pin is made of 0.5 or less, the Vickers hardness of the torsion prevention pin may be 30Hv or more.

In one embodiment of the present invention, the virtual extension line connecting the center of the load supporting track and the center of the unloaded track may be made at an angle of 45 ° or less with respect to the virtual horizontal line.

In one embodiment of the present invention, the base block is provided with a ball circulation member, the circulation guide block is formed with a ball circulation guide groove corresponding to the ball circulation member, the ball moving along the track is the load It can be moved to the support track and the unloaded track.

In one embodiment of the present invention, further comprising a linear actuator for controlling the movement of the slider, the linear actuator, the ball screw disposed in the ball screw insertion space; A moving table coupled to the slider and moved along a length direction of the ball screw according to the rotation of the ball screw; And it may have a power unit for rotating the ball screw.

Referring to the effects of the sliding block assembly according to the present invention described above are as follows.

According to the invention, the slider is provided with a torsion preventing pin.

The torsion preventing pin is moved along the pin guide groove while the slider is moved along the longitudinal direction of the guide rail and prevents the torsion of the slider.

The effects of the present invention are not limited to the above-described effects, but should be understood to include all the effects deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a cross-sectional view illustrating a conventional sliding block assembly.
2 is a perspective view of a sliding block assembly according to an embodiment of the present invention.
3 is an exploded perspective view of a sliding block assembly according to an embodiment of the present invention.
4 is an exemplary cross-sectional view of II of FIG. 2.
5 is a cross-sectional view of the base block according to an embodiment of the present invention.
6 is a cross-sectional view of a guide rail according to an embodiment of the present invention.
7 is an exemplary view showing a sliding block assembly having a linear actuator according to an embodiment of the present invention.
FIG. 8 is an exemplary cross-sectional view of II-II of FIG. 7.
9 is a perspective view of a sliding block assembly according to another embodiment of the present invention.
FIG. 10 is a cross-sectional view illustrating III-III of FIG. 9.

Hereinafter, with reference to the accompanying drawings will be described the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with another member in between. . In addition, when a part is said to "include" a certain component, it means that it may further include other components, without excluding the other components unless otherwise stated.

In the present invention, the upper portion and the lower portion are meant to be positioned above or below the target member, and do not necessarily mean to be positioned above or below the gravity direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a sliding block assembly according to an embodiment of the present invention, Figure 3 is an exploded perspective view of a sliding block assembly according to an embodiment of the present invention, Figure 4 is a cross-sectional view of the II of FIG. 5 is a cross-sectional view of a base block according to an embodiment of the present invention, and FIG. 6 is a cross-sectional view of a guide rail according to an embodiment of the present invention.

As shown in FIGS. 2 to 6, the sliding block assembly 1000 may include a slider 100, a guide rail 200, and a ball 300.

Here, the slider 100 is linearly moved along the longitudinal direction of the guide rail 200.

The slider 100 may include a base block 110 and a circular guide block 120.

The base block 110 may include a body 111 and a leg 112.

The body portion 111 is configured to be disposed above the base block 110, the body portion 111 to guide the movement path of the ball 300 so that a plurality of balls 300 are circulated along a predetermined track The load bearing track 101 and the unloaded track 102 are formed.

The load supporting track 101 and the unloaded track 102 are formed through the body portion 111. Here, the load supporting track 101 and the unloaded track 102 may be formed to correspond to the ball 300, so that the load supporting track 101 and the unloaded track 102 may be in rolling contact with the ball 300.

The angle α between the virtual extension line E and the virtual horizontal line H connecting the center of the load supporting track 101 and the center of the unloaded track 102 to lower the overall thickness of the sliding block assembly 1000. The load supporting track 101 and the unloading track 102 are formed in the body portion 111 such that) is 45 degrees or less.

Preferably, the angle α between the virtual extension line E connecting the center of the load supporting track 101 and the center of the unloading track 102 and the virtual horizontal line H forms 30 to 45 °. desirable. If the angle α between the imaginary extension line E and the imaginary horizontal line H exceeds 45 °, the overall thickness of the sliding block assembly 1000 becomes thick, and the imaginary extension line E and the imaginary extension line E This is because the bearing force of the slider 100 by the plurality of balls 300 may be somewhat weakened when the angle α between the horizontal lines H is less than 30 °.

Accordingly, the angle between the imaginary extension line E and the imaginary horizontal line H is 30 to 45 °, thereby reducing the thickness of the base block 110 and simultaneously supporting the slider 100 by the plurality of balls 300. It is preferable that it is made to keep smoothly.

Here, the load bearing track 101 forms a part of the hole is open. Thus, the ball 300 disposed on the load supporting track 101 may be supported by the rolling groove 201 formed in the guide rail 200 in the state exposed to the outside through the open portion of the load supporting track 101. have. Thus, the slider 100 may be supported by the guide rail 200.

The load supporting track 101 and the no-load track 102 formed in the body portion 111 are symmetrical with respect to the central axis C of the slider 100. In the present invention, it will be described as an example that the load supporting track 101 and the unloaded track 102 are formed one by one left and right with respect to the central axis C of the slider 100. In this case, the number of the load supporting tracks 101 and the unloading tracks 102 which are symmetrical with respect to the center axis C of the slider 100 may be plural.

And the leg portion 112 is connected to the lower portion of the body portion (111). These leg portions 112 form a pair in a spaced state and are connected to the lower portion of the body portion 111.

The leg part 112 may include a first extension leg 114 and a second extension leg 115.

Here, the first extension leg 114 is formed to be connected to the body portion 111.

At this time, the first extension leg 114 is connected to the body portion 111 in a state provided outside the first vertical line V1 which is a virtual vertical line passing through the center of the unloaded track 102.

The second extension leg 115 is bent from the first extension leg 114 to form the guide insertion portion 103. That is, the second extension leg 115 forms the guide insertion portion 103 in a space spaced from the lower surface of the body portion 111.

On the other hand, the circulation guide block 120 is coupled to both sides of the base block 110, respectively. This circular guide block 120 is adapted to interconnect the load bearing tracks 101 and the unloaded tracks 102.

Therefore, when the slider 100 moves along the guide rail 200, the plurality of balls 300 filled in the load supporting track 101 and the unloaded track 102 are supported by the circulation guide block 120. It may be moved from the track 101 to the unloaded track 102 or the load bearing track 101 to the unloaded track 102.

At this time, the base block 110 is provided with a ball circulation member 113, the circulation guide block 120 is formed with a ball circulation guide groove 121 having a shape corresponding to the ball circulation member 113, a predetermined The ball 300 moved along the track may be moved to the load supporting track 101 and the unloaded track 102.

Here, the ball circulation member 113 and the ball circulation guide groove 121 is in contact with the ball 300 is moved, so as to guide the moved ball 300 to the load supporting track 101 or the unloaded track 102 Is done.

The overall shape of the circulation guide block 120 on the basis of the cross section is made to correspond to the base block 110, the circulation guide block 120 and the base block 110 is integrally coupled by a fastening member 109 such as a screw Can be.

On the other hand, the guide rail 200 is made to guide the movement of the slider 100.

The guide rail 200 may include a rail support 210 and a rail extension 220.

' 형상을 이루며, 바닥면에 지지된다. 구체적으로 레일 지지부(210)의 폭은 슬라이더(100)의 중심축(C)을 기준으로 대칭을 이루며 이격된 하중 지지 트랙(101)의 중심점을 연결한 폭과 동일하거나 더 좁게 형성될 수 있다. 본 발명의 일실시예에서는 레일 지지부(210)의 폭이 하중 지지 트랙(101)의 중심점을 연결한 폭과 동일한 형태를 예로 설명하기로 한다.Where the rail support 210 is

'Shaped and supported on the bottom. In detail, the width of the rail support 210 may be symmetrical with respect to the center axis C of the slider 100 and may be formed to be the same or narrower than the width connecting the center points of the spaced apart load support tracks 101. In the exemplary embodiment of the present invention, the width of the rail support 210 will be described as an example in which the width is the same as the width connecting the center point of the load supporting track 101.

The rail support 210 is coupled to the slider 100 to form a ball screw insertion space 203. As such, the ball screw insertion space 203 formed by the rail support 210 may be disposed with a ball screw 410 (see FIG. 7) of the linear actuator 400 (see FIG. 7). In this case, the slider ( 100 may be selectively moved by the operation of the linear actuator 400.

The configuration of the sliding block assembly 1000 in which the linear actuator 400 is mounted will be described later.

And the rail extension portion 220 is formed to extend outward from the end of the rail support portion (210). The rail extension 220 may be inserted into the guide insert 103.

Here, the rolling groove 201 is formed on the upper surface of the rail extension 220, and the plurality of balls 300 disposed on the load supporting track 101 may be supported by the rolling groove 201.

The pin guide groove 202 is formed on the bottom surface of the rail extension part 220.

The pin guide groove 202 may have a shape corresponding to the torsion preventing pin 116 seated and fixed in the fixing groove 105 formed in the second extension leg 115. In this case, the pin guide groove 202 is formed along the longitudinal direction of the rail extension portion 220.

Therefore, when the slider 100 is moved along the longitudinal direction of the guide rail 200, the torsion preventing pin 116 is moved along the pin guide groove 202, thereby preventing the twist of the slider 100. .

The torsion preventing pin 116 may be generated during the movement of the slider 100 when a play is generated between the slider 100 and the guide rail 200 due to, for example, the wear of the ball 300. The twisting of the slider 100 is prevented.

The torsion preventing pin 116 prevents the force from being biased in a specific direction during the movement of the slider 100, thereby inducing smooth movement of the slider 100, as well as various components provided in the sliding block assembly 1000. It is made to prevent breakage by the bias of the force.

As such, as the sliding block assembly 1000 is provided with the torsion preventing pin 116, the torsion of the slider 100 may be prevented while the slider 100 is moved along the guide rail 200. Therefore, the slider 100 can precisely control movement.

Here, the torsion preventing pin 116 coupled to the second extension leg 115 passes through the center of the load supporting track 101 and the first vertical line V1 which is an imaginary vertical line passing through the center of the unloaded track 102. It may be provided between the second vertical line (V2) which is a virtual vertical line.

As such, as the torsion preventing pin 116 is provided between the virtual first vertical line V1 and the second vertical line V2, the torsion prevention of the slider 100 may be effectively performed. That is, in the state in which the slider 100 and the guide rail 200 are coupled, the torsion preventing pin 116 has a rolling groove in which bearing force for supporting the slider 100 is concentrated based on the central axis C of the slider 100 ( As it is provided on the outer side than 201, even if a minute twist occurs in the slider 100, the torsion preventing pin 116 can effectively prevent the twist of the slider 100.

In other words, as the torsion preventing pin 116 is disposed farther than the cloud groove 201 from the central axis C of the slider 100, the torsion occurrence of the slider 100 can be effectively prevented.

The torsion preventing pin 116 as described above may be made of a material having a friction coefficient (μ) of 0.5 or less and a Vickers hardness of 30 Hv or more. The torsion preventing pin 116 is not limited to the material that satisfies the above properties, of course, may be made of a variety of materials.

As described above, the sliding block assembly 1000 according to the present invention has a simple structure of the slider 100 and the guide rail 200, thereby simplifying the assembly and minimizing the manufacturing cost.

7 is an exemplary view showing a sliding block assembly having a linear actuator according to an embodiment of the present invention, Figure 8 is a cross-sectional view of the II-II of Figure 7, shown in Figures 2 to 6 Components referred to by the same reference numerals as and have the same function, detailed description of each of them will be omitted.

As shown in FIGS. 7 and 8, the sliding block assembly 1000 may further include a linear actuator 400.

The sliding block assembly 1000 may be applied to the electric technology by only one sliding block assembly 1000. Looking specifically at such a sliding block assembly 1000, the linear actuator 400 may include a ball screw 410, a moving table 420 and a power unit 430.

Here, the ball screw 410 may be disposed in the ball screw insertion space portion 203 formed by the rail support portion 210. Both ends of the ball screw 410 may be supported and fixed by the support member 440. At this time, the support member 440 is made to support the ball screw 410 in a state in which the ball screw 410 is rotatable.

The moving table 420 is coupled to the ball screw 410 and is moved along the length direction of the ball screw 410. Such a movement table 420 is made to be removable with the slider 100.

And the power unit 430 is made to rotate the ball screw 410. Here, the moving table 420 may be advanced along the longitudinal direction of the ball screw 410 or backward along the longitudinal direction of the ball screw 410 according to the rotational direction of the power unit 430.

As such, the movement of the movement table 420 may be controlled according to the rotation of the power unit 430. Here, when the movement table 420 is coupled to the slider 100, the slider 100 may move together with the movement table 420.

As such, as the ball screw insertion space 203 is provided in the rail support part 210 of the sliding block assembly 1000, a single sliding block assembly 1000 may be applied to the electric technology.

In addition, the sliding block assembly 1000 is, for example, the two sliding block assemblies 1000 are arranged spaced apart from each other, the slider 100 of the spaced sliding block assembly 1000 is connected to a connecting bar (not shown) It can also be connected to each other by the form. At this time, the movement table 420 of the linear actuator 400 is coupled to the connection bar, the linear actuator 400 may of course move the two sliders 100 at the same time.

9 is a perspective view of a sliding block assembly according to another embodiment of the present invention, Figure 10 is a cross-sectional view of the III-III of Figure 9, by the same reference numerals shown in Figures 2 to 6 Configurations referred to have the same function, and a detailed description thereof will be omitted.

9 and 10, the sliding block assembly 1100 has a shape difference between the leg 112 ′ and the guide rail 200 ′ from the sliding block assembly 1000.

Here, the leg portion 112 ′ is connected to the lower portion of the body portion 111 in a pair in a spaced state.

The leg portion 112 ′ may include a first extension leg 114 ′ and a second extension leg 115 ′.

Here, the first extension leg 114 ′ is made to be connected to the body portion 111.

At this time, the first extension leg 114 ′ is connected to the body portion 111 in a state provided inside the second vertical line V2, which is a virtual vertical line passing through the center of the load supporting track 101.

The second extension leg 115 ′ is bent from the first extension leg 114 ′ to form the guide insertion portion 103 ′. That is, the second extension leg 115 ′ forms the guide insertion portion 103 ′ in a space spaced from the lower surface of the body portion 111.

The leg 112 'is coupled to the guide rail 200', thereby forming the ball screw insertion space 104. That is, the pair of spaced apart first extension legs 114 ′ form the ball screw insertion space 104.

Meanwhile, the guide rail 200 'is configured to guide the movement of the slider 100'.

The guide rail 200 ′ may include a rail support 210 ′ and a rail extension 220 ′.

' 형상을 이루며, 바닥면에 지지된다. 구체적으로 레일 지지부(210')의 폭은 슬라이더(100')의 중심축(C)을 기준으로 대칭을 이루며 이격된 무하중 트랙(102)의 중심점을 연결한 폭보다 더 넓게 형성될 수 있다.Where the rail support 210 '

'Shaped and supported on the bottom. In detail, the width of the rail support 210 'may be wider than the width connecting the center points of the non-loaded tracks 102 symmetrically with respect to the center axis C of the slider 100'.

And the rail extension portion 220 'is formed to extend inward from the end of the rail support portion 210'. The rail extension 220 'may be inserted into the guide insert 103'.

Here, a rolling groove 201 ′ is formed on the upper surface of the rail extension 220 ′, and the plurality of balls 300 disposed on the load supporting track 101 may be supported by the rolling groove 201 ′.

A pin guide groove 202 'is formed on the bottom surface of the rail extension portion 220'.

Therefore, when the slider 100 'is moved along the longitudinal direction of the guide rail 200', the torsion preventing pin 116 may be moved along the pin guide groove 202 '.

However, this is only a preferred embodiment of the present invention, the scope of the present invention is not limited by the scope of these embodiments.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is represented by the following claims, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention.

100, 100 ': slider 101: load bearing track
102: no load track 103, 103 ': guide insert
104, 203: ball screw insertion space 109: fastening member
110: base block 111: body portion
112, 112 ': leg 113: ball circulation member
114, 114 ': first extension leg 115, 115': second extension leg
116: anti-twist pin 120: circulation guide block
121: ball circulation guide groove 200, 200 ': guide rail
201, 201 ': Cloud Groove 202, 202': Pin Guide Groove
210, 210 ': Rail support 220, 220': Rail extension
300: ball 400: linear actuator
410: ball screw 420: moving table
430: power unit 1000, 1100: sliding block assembly

Claims (14)

A slider having a load-bearing track and a load-free track having a plurality of balls circulated therein, and a circulation guide block coupled to both sides of the base block and interconnecting the load-bearing track and the unloaded track; And
It includes a guide rail for guiding the movement of the slider,
The base block,
A body part in which the load supporting track and the unloading track are formed;
Sliding block assembly having a pair formed in a spaced apart state and connected to the lower portion of the body portion, forming a guide insertion portion is inserted both ends of the guide rail.
The method of claim 1,
The leg portion,
A first extension leg connected to the body portion; And
A second extension leg bent from the first extension leg to form the guide insertion portion,
And the first extension leg is provided on an outer side of the first vertical line which is an imaginary vertical line of the unloaded track.
The method of claim 2,
The guide rail,
'

A rail support portion forming a shape and supported on the bottom surface; And
A rail extension extending outward from an end of the rail support and inserted into the guide insert;
Sliding block assembly, characterized in that the width of the rail support is formed equal to or narrower than the width connecting the center point of the load bearing track symmetrical with respect to the center axis (C) of the slider.
The method of claim 3,
When the slider and the guide rail are coupled to each other, the rail support portion is configured to form a ball screw insertion space portion.
The method of claim 1,
The leg portion,
A first extension leg connected to the body portion; And
A second extension leg bent from the first extension leg to form the guide insertion portion,
And the first extension leg is provided on an inner side of a second vertical line which is an imaginary vertical line of the load bearing track.
The method of claim 5,
The guide rail,
'

A rail support portion forming a shape and supported on the bottom surface; And
Extending inwardly from an end of the rail support and including a rail extension inserted into the guide insert;
Sliding block assembly, characterized in that the width of the rail support is formed wider than the width connecting the center point of the unloaded track symmetrical with respect to the center axis (C) of the slider.
The method of claim 6,
When the slider and the guide rail are coupled, the pair of spaced apart leg portions are configured to form a ball screw insertion space portion.
The method according to claim 3 or 6, wherein
On the upper surface of the rail extension portion is formed a rolling groove for supporting the ball disposed on the load supporting track,
Sliding block assembly, characterized in that the pin guide groove is formed on the lower surface of the rail extension.
The method of claim 8,
Sliding block assembly coupled to the leg portion is characterized in that the sliding movement along the pin guide groove.
The method of claim 9,
And the torsion preventing pin is disposed between a first vertical line, which is an imaginary vertical line of the unloaded track, and a second vertical line, which is an imaginary vertical line of the load bearing track.
The method of claim 9,
Friction coefficient (μ) of the anti-twist pin is made of 0.5 or less, Vickers hardness of the anti-twist pin is 30Hv or more characterized in that the sliding block assembly.
The method of claim 1,
And a imaginary extension line connecting the center of the load bearing track and the center of the unloading track to an angle of 45 ° or less with respect to the imaginary horizontal line.
The method of claim 1,
The base block is provided with a ball circulation member, the circulation guide block is formed with a ball circulation guide groove corresponding to the ball circulation member, the ball moved along the track is moved to the load supporting track and the unloaded track Sliding block assembly, characterized in that.
The method according to claim 4 or 7,
Further comprising a linear actuator for controlling the movement of the slider,
The linear actuator is,
A ball screw disposed in the ball screw insertion space;
A moving table coupled to the slider and moved along a length direction of the ball screw according to the rotation of the ball screw; And
And a power unit for rotating the ball screw.

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