KR20140014705A

KR20140014705A - Linear sliding device

Info

Publication number: KR20140014705A
Application number: KR1020120081392A
Authority: KR
Inventors: 이인정
Original assignee: 이인정
Priority date: 2012-07-25
Filing date: 2012-07-25
Publication date: 2014-02-06

Abstract

The present invention provides a linear sliding device. The linear sliding device is formed of a structure in which bearings clamp a linear guide on both sides of the linear guide to remove a contact gap and at the same time, to come into contact with a linear guide rail by having a rolling motion, thereby preventing movement and operating softly without noise. The linear sliding device according to an embodiment of the present invention comprises: a linear guide rail having bearing guide grooves longitudinally formed on the vertical walls on both sides and opened laterally; a slider positioned on the upper side of the linear guide rail; first and second horizontal rotation bearings positioned on the underside of the slider for the slider to have a linear movement by rolling along the bearing guide grooves; and bearing support bolts inserted in the first and second horizontal rotation bearings and thread-coupled to the slider so as to support the rotation of the first and second horizontal rotation bearings.

Description

Linear sliding device

The present invention relates to a linear sliding device, in particular, in the form of a bearing bite the linear guide on both sides, to ensure that the bearing in contact with the linear guide rail in rolling motion, at the same time to eliminate the contact gap to eliminate the flow and the kinetic frictional force It relates to a soft, noiseless linear sliding device.

In general, automated equipment is applied to facilities for mass production. The automation device is equipped with a linear motion guide (LINEAR MOTION GUIDE) as a linear reciprocating device for linear reciprocation of the product or equipment.

The linear motion guide ensures quiet and precise movement of the goods to be transported in a linear movement, and at the same time ensures more accurate positioning with stable running force. In addition, since the linear motion guide can maintain high accuracy for a long time, it is applied to various types of automation devices. The linear motion guide has a basic configuration of a guide rail having a predetermined length, a slider for sliding along the guide rail, and a moving means for moving the slider forward and backward. At this time, the structure in which the slider moving forward and backward is linearly moved by the rotational coupling of the ball screw (screw), the structure in which the slider is linearly moved by the driving force such as the actuator, and the slider is connected to the belt to rotate the belt pulley It is proposed and applied in various ways, such as a structure moved by.

The linear motion guide can increase speed and reduce noise only when the clearance with the sliding contact surface is zero for accurate position movement. It must also have good load carrying capacity.

As a background technology of the present invention, Korean Patent Registration No. 10-0700315 discloses a linear motion guide having a heavy load carrier. In the background art, in a motion guide device for guiding a movement of a moving object, a pair of rails extending along a moving direction and facing each other, and a pair of rails extending along a moving direction on opposite sides of the sidewall, And a carrier provided with a frame provided, and a plurality of track roller bearings coupled to the carrier block and the carrier block, the outer circumferential surface of which is in contact with each rail, wherein the track roller contacts the one rail in the plurality of track roller bearings. At least one of the bearings and at least one of the track roller bearings in contact with the other rail are in contact with each other.

However, the background art has to install a separate rail member in two places of the frame. This rail member is required to additionally constitute a long member having a circular cross section, thereby increasing the manufacturing cost. In addition, the mounting groove of the frame on which the rail member is seated must be precisely processed, and it has a disadvantage that it is difficult to secure the straightness when a defect occurs.

Korea Patent Registration No. 10-0379782

The present invention was devised in view of the above circumstances, and the bearing is configured in such a manner that the linear guide bites on both sides, and the bearing is contacted to the linear guide rail by rolling motion, while eliminating the contact gap and removing the flow. Its purpose is to provide a smooth, noiseless linear sliding device with low kinetic friction.

Linear sliding device according to a preferred embodiment of the present invention,

A linear guide rail having a bearing guide groove open laterally on a vertical wall on both sides in the longitudinal direction;

A slider located on an upper surface of the linear guide rail;

First and second horizontal rotating bearings positioned on the lower surface of the slider to linearly move the slider while rolling along the bearing guide grooves, respectively;

And bearing bearing bolts respectively inserted into the first and second horizontal rotating bearings and fixed to the slider by screw coupling to support rotation of the first and second horizontal rotating bearings.

In addition, the first horizontal rotary bearing is installed so as to contact the N-point bearing to the bearing guide groove on the one side, the second horizontal rotating bearing is characterized in that it is installed so as to contact the N or N + 1 in the other bearing guide groove.

In addition, the first horizontal rotating bearing or the second horizontal rotating bearing is characterized in that the eccentric bearing type is eccentrically coupled to the bearing support bolt.

In addition, further comprising one or more stop ring having a diameter equal to or smaller than the inner ring of the first horizontal rotating bearing and the second horizontal rotating bearing is inserted into the bearing support bolt to determine the fixed position after screwing the bearing support bolt. It features.

According to the linear sliding device of the present invention, the bearing is configured in such a manner that the linear guide is bitten on both sides, so that the bearing contacts the linear guide rail in rolling motion. This eliminates the flow by eliminating contact gaps with the bearings and results in a smooth, noiseless reciprocating movement with less kinetic friction.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view of a linear sliding device according to the present invention.
Figure 2 is a side cross-sectional view of Figure 1;
Figure 3 is a rear perspective view of the slider applied to the present invention.
4 is a rear view of FIG. 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

1 to 4, the linear sliding device 10 according to the present invention includes a linear guide rail 12, a slider 14, first and second horizontal rotating bearings 16A and 16B and bearing support bolts 18. ).

The linear guide rail 12 has bearing guide grooves 122a and 122b which are laterally opened on the vertical walls 122 and 122 on both sides in the longitudinal direction. Bearing guide grooves 122a and 122b are formed at the same height on both vertical walls 122 and 122.

The bearing guide grooves 122a and 122b form a rectangular cross-sectional groove. The length of the linear guide rail 12 is not specified and may be increased or decreased in accordance with the maximum reciprocating movement distance of the slider 14.

The slider 14 is located on the upper surface of the linear guide rail 12. The slider 14 is not limited to the shape illustrated as a substantially plate-shaped. The slider 14 is equipped with a product or equipment to be moved. The slider 14 is configured to be shorter than the length of the linear guide rail 12. In this embodiment, the slider 14 and the linear guide rail 12 is made of lightweight aluminum, but is not limited to a specific material in the present invention.

The first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B are located on the lower surface of the slider 14. The first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B linearly reciprocate the slider 14 while rolling along the bearing guide grooves 122a and 122b, respectively. The first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B have the same structure. That is, the first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B include an outer ring, an inner ring, steel balls or rollers installed between the inner ring and the outer ring, and a retainer for maintaining a constant distance between the steel balls (or rollers). . Thus, the first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B are not limited to a specific bearing.

In the present embodiment, the first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B are each composed of two, but in the present invention, the first horizontal rotating bearing 16A has N in one bearing guide groove 122a. And the second horizontal rotary bearing 16B may be installed in the other bearing guide groove 122b to make N + 1 rolling contact. Therefore, as well as illustrated, for example, when the first horizontal rotating bearing 16A is composed of two, the second horizontal rotating bearing 16B is composed of three. In this case, the first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B may be aligned at positions facing each other or offset.

The bearing support bolts 18 are inserted into the first and second horizontal rotating bearings 16A and 16B, respectively, and fixed to the slider 14 by screwing, thereby preventing rotation of the first and second horizontal rotating bearings 16A and 16B. I support it. In this embodiment, the bearing support bolt 18 is configured in the form of a bolt, but is not limited to this bolt type. At this time, the bearing support bolt 18 is positioned in a direction perpendicular to the horizontal bottom surface 123 of the linear guide rail 12.

In addition, the diameter of the first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B is equal to or smaller than that of the inner ring and is inserted into the bearing support bolt 18 to fix the bearing position after screwing the bearing support bolt 18. It may further comprise one or more stop rings 17 to determine.

In the linear sliding device 10 configured as described above, when the slider 14 is moved to one side through the moving means of the belt or the feeding screw, the first and second horizontal rotating bearings 16A and 16B are bearing guide grooves ( 122a.122b while rotating in contact with the rolling along the longitudinal direction of the linear guide rail 12 in a state of being in close contact. Therefore, the slider 14 can be stabilized and smooth linear sliding movement.

Meanwhile, in the present invention, the first horizontal rotating bearing 16A or the second horizontal rotating bearing 16B may use an eccentric bearing type that is eccentrically coupled to the bearing support bolt 18. In this case, there is no gap between the first and second horizontal rotating bearings 16A and 16B and the bearing guide grooves 122a and 122b to smoothly move the slider 14 without flow. That is, the center of the inner ring of the first horizontal rotating bearing 16A or the second horizontal rotating bearing 16B may be configured to be eccentric by a predetermined distance from the center of the bearing.

As described above, the linear sliding device 10 according to the present invention can smoothly perform a linear sliding motion without installing the guide shaft on the linear guide rail 12, and thus the manufacturing cost is low. In addition, the rolling motion in the state in which the first and second horizontal rotating bearings 16A and 16B are in direct contact with the bearing guide grooves 122a and 122b enables a smooth linear reciprocating movement without noise.

In addition, when the first or second horizontal rotating bearing 16A or 16B has an eccentric structure or an outer horizontal rotating bearing 22 is added, the widthwise flow of the slider 14 is eliminated, thereby enabling precise reciprocating movement.

Reference numeral '14a' is a 'screw hole' for fixing the installation of the mobile equipment mounted on the slider.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be.

12: Guide rail
122a, 122b: bearing guide groove
14: slider
16A: first horizontal rotating bearing
16B: second horizontal rotating bearing
17: stop ring
18: Bearing support bolt

Claims

A linear guide rail 12 having bearing guide grooves 122a and 122b that are laterally open to the vertical walls 122 and 122 on both sides in the longitudinal direction;
A slider 14 positioned on an upper surface of the linear guide rail 12;
A first horizontal rotating bearing 16A and a second horizontal rotating bearing 16B positioned on a lower surface of the slider 14 to linearly move the slider 14 while rolling along the bearing guide grooves 122a and 122b, respectively; ;
Bearing support bolts respectively inserted into the first and second horizontal rotating bearings 16A and 16B and fixed to the slider 14 by screwing to support rotation of the first and second horizontal rotating bearings 16A and 16B. 18) A linear sliding device comprising: a.

The method of claim 1,
The first horizontal rotating bearing (16A) is in contact with N of one bearing guide groove (122b) in the rolling contact, the second horizontal rotating bearing (16B) is N or N + 1 in the other bearing guide groove (122a) A linear sliding device, which is provided so as to contact with a cloud.

The method of claim 1,
The first horizontal rotating bearing (16A) or the second horizontal rotating bearing (16B) is a linear sliding device, characterized in that the eccentric bearing type is eccentrically coupled to the bearing support bolt (18).

The method of claim 1,
The diameter of the first horizontal rotating bearing 16A and the second horizontal rotating bearing 16B is equal to or smaller than that of the inner ring, and is inserted into the bearing support bolt 18 to fix the bearing position after the screw of the bearing support bolt 18 is screwed in place. Linear sliding device further comprising at least one stop ring (17) for determining.