CN111288078B

CN111288078B - Linear motion guiding device and method

Info

Publication number: CN111288078B
Application number: CN202010127726.7A
Authority: CN
Inventors: 霍壹花
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-30
Filing date: 2020-02-28
Publication date: 2022-03-22
Anticipated expiration: 2040-02-28
Also published as: KR102024135B1; CN111288078A

Abstract

The invention discloses a linear motion guiding device and a method, wherein the guiding device comprises a guide rail and a sliding block; the lower part of the sliding block is provided with a guide groove, and the guide groove extends from one end of the sliding block to the other end along the length direction of the sliding block; the guide rail is inserted into the inner side of the guide groove, and the sliding block is positioned on the guide rail and can do linear motion along the guide rail; the adjusting method of the guide device ensures the stability of the sliding block in the advancing on the guide rail through a plurality of steps. The invention provides a linear motion guide device which can stably support a load and minimize the shaking degree in the process of advancing under the state of maintaining a specified advancing speed; when the sliding block moves on the guide rail, the phenomena of blocking, violent shaking and the like can be eliminated through the elastic movement of the adjusting assembly, the shaking degree of the sliding block in the moving process is minimized, and the stable advancing of the sliding block is realized; the bearing assembly makes the bearing supporting force of the slide block to the load more stable, and the linear guide effect of the linear motion guide device is better.

Description

Linear motion guiding device and method

Technical Field

The present invention relates to a guiding device and method, and more particularly, to a linear motion guiding device and method.

Background

A linear motion guide device is a device for guiding an object to perform linear motion, and a general linear motion guide device includes a guide rail and a slider attached to the guide rail and movable along the guide rail, and a plurality of balls capable of rolling are provided between the guide rail and the slider. In order to maintain the wear resistance of the linear motion guide device and reduce the friction coefficient, lubricating oil needs to be added to the position of the ball, but the ball arranged on the existing linear motion guide device is exposed outside and cannot be sealed, and the phenomenon of lubricating oil leakage is easy to occur in the use process of the linear motion guide device. In addition, current linear motion guiding device can be because its guide rail self has slight bending deformation or the preparation error and the equipment error that exist for can take place card in the twinkling of an eye, wearing and tearing when the slider moves on the guide rail, the phenomenon that appears acutely rocking even, reduced slider rectilinear motion's precision, and make operating personnel need consume more manpower and time in the aspect of the maintenance when using current linear motion guiding device.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a linear motion guiding device and a linear motion guiding method.

In order to solve the technical problems, the invention adopts the technical scheme that: a linear motion guide device comprises a guide rail and a slide block; the lower part of the sliding block is provided with a guide groove, and the guide groove extends from one end of the sliding block to the other end along the length direction of the sliding block; the guide rail is inserted into the inner side of the guide groove, and the sliding block is positioned on the guide rail and can do linear motion along the guide rail;

the upper side and the lower side of the guide rail are both protruded outwards to form a slide block guide part; concave guiding parts matched with the sliding block guiding parts are formed on the front side and the rear side of the guiding groove;

be provided with adjusting part on the slider, adjusting part is located between guide rail and the slider and adjusting part's boundary surface and guide rail cooperate, and the slider adjusts through the adjusting part who extrudes on it when moving along the guide rail and makes the slider can move on the guide rail steadily without rocking.

Furthermore, the guide groove and the concave surface guide part are respectively provided with an accommodating groove which is symmetrical front and back relative to the central line of the sliding block, and the adjusting assembly is arranged in the accommodating groove; the adjusting components are arranged in a plurality of groups along the length direction of the sliding block; the set of adjustment assemblies includes a plurality of adjustment assemblies that are symmetrical back and forth about the slider centerline.

Furthermore, an opening part which is opened towards the direction of the guide rail is formed on the boundary surface of the adjusting assembly matched with the guide rail; the adjusting component consists of a first component and a second component which can be separated; be provided with the spring between first subassembly and the second subassembly, the setting of spring can adjust the position of first subassembly, second subassembly in the holding tank and then guarantee the stable removal of slider on the guide rail.

Furthermore, the sliding block is also provided with a bearing assembly, and the bearing assembly is arranged between the guide rail and the sliding block; the bearing assemblies are arranged in a plurality of groups along the length direction of the sliding block; the bearing assembly comprises a first bearing and a second bearing; the concave surface guide part is provided with first mounting grooves which are symmetrical in front and back relative to the center line of the sliding block, and the first bearing is arranged in the first mounting grooves; the guide groove is provided with a second mounting groove which is symmetrical front and back about the center line of the sliding block, the second bearings are arranged in the second mounting groove, and the two second bearings which are symmetrical front and back about the center line of the sliding block are connected together through a connecting rod.

Furthermore, a connecting hole which transversely penetrates through the sliding block from front to back is formed in the sliding block, and the connecting rod is inserted into the connecting hole.

Furthermore, the shape of the inner wall of the accommodating groove is matched with the shape of the outer surface of the adjusting component; in order to enable the first assembly and the second assembly to rotate smoothly, the inner wall of the accommodating groove is arc-shaped, and the outer surface of the adjusting assembly formed by combining the first assembly and the second assembly is also arc-shaped in order to be matched with the accommodating groove.

Furthermore, one ends of the first assembly and the second assembly are protruded outwards to form connecting protrusions, and the other ends of the first assembly and the second assembly are recessed inwards to form connecting grooves; the connecting projection of the first component is matched with the connecting projection of the corresponding second component to form a connecting convex column of the adjusting component, and the connecting groove of the first component is matched with the connecting groove of the corresponding second component to form a connecting groove of the adjusting component;

the connecting convex columns of the adjusting components are matched with the connecting grooves of the adjacent adjusting components to connect the groups of adjusting components together.

And furthermore, spring clamping grooves are formed in the first assembly and the second assembly, and two ends of the spring are respectively arranged in the spring clamping grooves of the first assembly and the second assembly, so that the spring is firmly installed in the adjusting assembly.

And furthermore, a rotatable screw connecting column is arranged on the first bearing, the first bearing is inserted into the first mounting groove, the screw connecting column on the first bearing is in threaded connection with a threaded hole in the first mounting groove, and the first bearing is fixed in the first mounting groove by using a bolt.

The adjusting method of the linear motion guiding device comprises the following steps:

when the sliding block slides on the guide rail, the external force of the guide rail acting on the adjusting component on the sliding block can change due to slight bending deformation or manufacturing error and assembly error of the guide rail; when the external force applied to the adjusting assembly is reduced, the spring pushes the first assembly and the second assembly to be away from each other, meanwhile, the angle of the opening part at the other end of the adjusting assembly is reduced, the boundary surface of the adjusting assembly, which is matched with the guide rail, moves to keep in contact with the guide rail, and the boundary surface of the adjusting assembly is in a state of protruding out of the concave guide part at the moment; when the external force borne by the adjusting assembly is increased, the guide rail extrudes the boundary surface of the adjusting assembly to increase the angle of the opening part, and meanwhile, the first assembly and the second assembly relatively rotate to extrude the spring positioned at the other end of the adjusting assembly, and the spring is in a compressed state; when the interaction force between the slide block and the guide rail is changed, the negative influence of the changed interaction force on the advancing process of the slide block can be reduced through the matching coordination effect of the spring and the opening part, and the moving stability of the slide block is ensured.

The invention provides a linear motion guide device which can stably support a load and minimize the shaking degree in the process of advancing under the state of maintaining a specified advancing speed; when the sliding block moves on the guide rail, the phenomena of blocking, violent shaking and the like can be eliminated through the elastic movement of the adjusting assembly, the shaking degree of the sliding block in the moving process is minimized, and the stable advancing of the sliding block is realized; the bearing assembly makes the bearing supporting force of the slide block to the load more stable, and the linear guide effect of the linear motion guide device is better.

Drawings

Fig. 1 is a schematic structural view of a linear motion guide device according to a first embodiment.

Fig. 2 is a plan perspective view of fig. 1.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic structural diagram of a slider according to the first embodiment.

Fig. 5 is an exploded view of the slider of fig. 4.

Fig. 6 is a schematic structural view of the adjustment assembly.

Fig. 7 is a schematic structural view of a linear motion guide device according to a second embodiment.

Fig. 8 is a plan perspective view of fig. 7.

Fig. 9 is a cross-sectional view taken along line C-C of fig. 8.

Fig. 10 is a sectional view taken along line B-B of fig. 8.

Fig. 11 is a schematic structural view of a slider according to the second embodiment.

Fig. 12 is an exploded view of the slider of fig. 11.

In the figure: 1000. a linear guide device; 100. a guide rail; 110. a slider guide portion; 121. an upper face portion; 122. a lower face portion;

200. a slider; 210. a guide groove; 220. a concave guide portion; 240. a first mounting groove; 250. accommodating grooves; 260. connecting holes; 270. a second mounting groove;

300. a second bearing; 350. a connecting rod; 380. a first bearing; 309. connecting columns by screws; 330. a bolt;

400. an adjustment assembly; 410. a first component; 411. an opening part; 420. a second component; 430. a spring; 470. a spring clamp groove; 480. a connecting projection; 490. and connecting the grooves.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The first embodiment,

As shown in fig. 1, a linear motion guide device includes a guide rail 100, a slider 200; the lower part of the slider 200 is provided with a guide groove 210, and the guide groove 210 extends from one end of the slider to the other end along the length direction of the slider; the guide rail 100 is inserted into the inner side of the guide groove 210, and the slider 200 is positioned on the guide rail 100 and can move linearly along the guide rail;

both upper and lower sides of the guide rail 100 are outwardly protruded to form a slider guide 110, and the slider guide 110 is composed of an upper surface portion 121 and a lower surface portion 122 forming an acute angle with the upper surface portion.

Concave guide portions 220 to be fitted with the slider guide portions 110 are formed at both front and rear sides of the guide groove 210;

the slider 200 is provided with an adjusting assembly 400, the adjusting assembly 400 is positioned between the guide rail 100 and the slider 200, the boundary surface of the adjusting assembly is matched with the guide rail, and the slider can stably move on the guide rail without shaking by adjusting the adjusting assembly extruded on the slider when moving along the guide rail.

As shown in fig. 3 and 4, the guide groove 210 and the concave guide portion 220 are respectively provided with a front-back symmetrical accommodating groove 250 about the center line of the slider, and the adjusting assembly 400 is disposed in the accommodating groove 250; the adjusting assemblies 400 are arranged in multiple groups, and the multiple groups of adjusting assemblies are arranged along the length direction of the sliding block; the set of adjustment assemblies includes a plurality of adjustment assemblies that are symmetrical back and forth about the slider centerline.

As shown in fig. 5 and 6, an opening 411 which is opened towards the guide rail direction is formed on the boundary surface of the adjusting assembly 400 matched with the guide rail 100; the adjustment assembly 400 is composed of a first assembly 410 and a second assembly 420 which are separable; a spring 430 is arranged between the first component 410 and the second component 420, and the spring 430 is a compressed spring or a leaf spring; spring clamping grooves 470 are formed in the first assembly 410 and the second assembly 420, and two ends of the spring 430 are arranged in the spring clamping grooves of the first assembly and the second assembly respectively, so that the spring is firmly mounted in the adjusting assembly. The setting of spring can make first subassembly and second subassembly push away each other under the effect of elasticity, can adjust the position of first subassembly, second subassembly in the holding tank and then guarantee the steady movement of slider on the guide rail.

The setting of spring has increaseed the interact power between first subassembly and the second subassembly, the spring sets up on the relative both ends of adjusting part with the opening, when the guide rail is to adjusting part's extrusion external force change, first subassembly and second subassembly can rotate relatively under the spring action, change the position of adjusting part in the holding tank, guarantee that adjusting part's boundary surface and guide rail are in elastic contact's state constantly, consequently, the stability of slider when the motion on the guide rail can be guaranteed in the cooperation setting of spring and opening, the degree of rocking minimizing with the slider.

The adjusting method of the linear guide device comprises the following steps: when the sliding block slides on the guide rail, the external force of the guide rail acting on the adjusting component on the sliding block can be changed due to slight bending deformation or manufacturing error and assembly error of the guide rail; when the external force applied to the adjusting assembly is reduced, the spring pushes the first assembly and the second assembly to be away from each other, and simultaneously, the angle of the opening part at the other end of the adjusting assembly is reduced, so that the boundary surface of the adjusting assembly matched with the guide rail moves to be kept in contact with the guide rail, and the boundary surface of the adjusting assembly is in a state of protruding out of the concave guide part; when the external force borne by the adjusting assembly is increased, the guide rail extrudes the boundary surface of the adjusting assembly to increase the angle of the opening part, and meanwhile, the first assembly and the second assembly relatively rotate to extrude the spring positioned at the other end of the adjusting assembly, and the spring is in a compressed state; when the interaction force between the sliding block and the guide rail changes, the negative influence of the changed interaction force on the sliding block advancing process can be adjusted through the coordination action of the spring and the opening part, the phenomena of instant blocking and abrasion, even violent shaking and the like of the sliding block when the sliding block moves on the guide rail are avoided, and the moving stability of the sliding block is ensured.

The shape of the inner wall of the accommodating groove 250 is matched with the shape of the outer surface of the adjusting component; in order to allow the first and

second modules

410 and 420 to smoothly rotate, the inner wall of the receiving groove 250 is formed in an arc shape, and the outer surface of the adjusting module formed by combining the first and

second modules

410 and 420 is also formed in an arc shape so as to match the receiving groove 250.

One ends of the first component 410 and the second component 420 are both protruded outwards to form a connecting protrusion 480, and the other ends are both sunken inwards to form a connecting groove 490; the connecting projection of the first component is matched with the connecting projection of the corresponding second component to form a connecting convex column of the adjusting component, and the connecting groove of the first component is matched with the connecting groove of the corresponding second component to form a connecting groove of the adjusting component;

Example II,

A linear motion guide device, which is different from the first embodiment in that:

as shown in fig. 7 and 8, the slider 200 is further provided with a bearing assembly, the bearing assembly is arranged between the guide rail 100 and the slider 200, and the bearing assembly is arranged so that the guide rail can support the slider more stably, and the slider can support the load guided on the slider more stably; the bearing assembly and the adjusting assembly do not interfere with each other.

As shown in fig. 10-12, there are multiple sets of bearing assemblies, which are arranged along the length direction of the slider; the bearing assembly includes a first bearing 380, a second bearing 300; the concave guide part 220 is provided with first mounting grooves 240 which are symmetrical back and forth about the center line of the slider, and the first bearing 380 is disposed in the first mounting groove 240; the guide groove 210 is provided with second mounting grooves 270 which are symmetrical front and back with respect to the center line of the slider, and the second bearing 300 is arranged in the second mounting grooves 270; the outer peripheral surfaces of the first bearing and the second bearing are respectively contacted with the upper surface part and the lower surface part of the guide rail, the slide block can stably support a load under the condition of maintaining the specified advancing speed due to the arrangement of the first bearing and the second bearing, the bearing supporting force of the slide block can be kept more stable, meanwhile, the shaking of the slide block can be reduced, and the linear guide effect of the linear motion guide device is better.

The slider 200 is provided with a connecting hole 260 which is transversely penetrated from front to back, a connecting rod 350 is inserted into the connecting hole 260, and two second bearings which are symmetrical in front and back around the central line of the slider are connected together through the connecting rod 350. Be provided with rotatable screw connection post 309 on the first bearing 380, insert first bearing 380 in first mounting groove 240, screw connection post on the first bearing and the screw hole threaded connection in the first mounting groove, reuse bolt 330 fixes first bearing 380 in first mounting groove 240, and the installation of first bearing is easier.

The outer peripheral surfaces of the first bearing and the second bearing are made of PEEK (Poly Ether Ketone) materials, so that the bearings are free of abrasion and noise when the guide rails are in contact, the sliding blocks can move on the guide rails smoothly and do not need to be additionally added with lubricating oil, and the defect that lubricating oil is easy to leak in the use process of the existing linear motion guide device is avoided.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.

Claims

1. A linear motion guide device characterized by: comprises a guide rail (100) and a slide block (200); the lower part of the sliding block (200) is provided with a guide groove (210), and the guide groove (210) extends from one end of the sliding block to the other end along the length direction of the sliding block; the guide rail (100) is inserted into the inner side of the guide groove (210), and the sliding block (200) is positioned on the guide rail (100) and can do linear motion along the guide rail;

the upper side and the lower side of the guide rail (100) are both bulged outwards to form a slider guide part (110); concave guiding parts (220) matched with the sliding block guiding parts (110) are formed on the front side and the rear side of the guiding groove (210);

the sliding block (200) is provided with an adjusting assembly (400), the adjusting assembly (400) is positioned between the guide rail (100) and the sliding block (200), the boundary surface of the adjusting assembly is matched with the guide rail, and the sliding block can stably move on the guide rail without shaking by adjusting the adjusting assembly extruded on the sliding block when moving along the guide rail;

an opening part (411) which is opened towards the direction of the guide rail is formed on the boundary surface of the adjusting assembly (400) matched with the guide rail (100); the adjusting component (400) is composed of a first component (410) and a second component (420) which can be separated; a spring (430) is arranged between the first assembly (410) and the second assembly (420), and the position of the first assembly and the position of the second assembly in the accommodating groove can be adjusted through the arrangement of the spring, so that the stable movement of the sliding block on the guide rail is ensured.

2. The linear motion guide device according to claim 1, characterized in that: the guide groove (210) and the concave guide part (220) are respectively provided with an accommodating groove (250) which is symmetrical front and back relative to the central line of the sliding block, and the adjusting assembly (400) is arranged in the accommodating groove (250); the adjusting assemblies (400) are arranged in multiple groups, and the multiple groups of adjusting assemblies are arranged along the length direction of the sliding block; the set of adjustment assemblies includes a plurality of adjustment assemblies that are symmetrical back and forth about the slider centerline.

3. The linear motion guide device according to claim 2, characterized in that: the sliding block (200) is also provided with a bearing assembly, and the bearing assembly is arranged between the guide rail (100) and the sliding block (200); the bearing assemblies are arranged in multiple groups along the length direction of the sliding block; the bearing assembly comprises a first bearing (380), a second bearing (300); the concave guiding part (220) is provided with a first mounting groove (240) which is symmetrical in front and back along the center line of the sliding block, and a first bearing (380) is arranged in the first mounting groove (240); the guide groove (210) is provided with a second mounting groove (270) which is symmetrical back and forth relative to the center line of the slider, the second bearing (300) is arranged in the second mounting groove (270), and the two second bearings which are symmetrical back and forth relative to the center line of the slider are connected together through a connecting rod (350).

4. The linear motion guide device according to claim 3, characterized in that: the slider (200) is provided with a connecting hole (260) which transversely penetrates from front to back, and the connecting rod (350) is inserted into the connecting hole (260).

5. The linear motion guide device according to claim 2, characterized in that: the shape of the inner wall of the accommodating groove (250) is matched with the shape of the outer surface of the adjusting component; in order to enable the first assembly (410) and the second assembly (420) to rotate smoothly, the inner wall of the accommodating groove (250) is arc-shaped, and the outer surface of the adjusting assembly formed by combining the first assembly (410) and the second assembly (420) is also arc-shaped in order to be matched with the accommodating groove (250).

6. The linear motion guide device according to claim 2, characterized in that: one ends of the first component (410) and the second component (420) are both protruded outwards to form a connecting protrusion (480), and the other ends are both sunken inwards to form a connecting groove (490); the connecting projection of the first component is matched with the connecting projection of the corresponding second component to form a connecting convex column of the adjusting component, and the connecting groove of the first component is matched with the connecting groove of the corresponding second component to form a connecting groove of the adjusting component;

the connecting convex columns of the adjusting assemblies are matched with the connecting grooves of the adjacent adjusting assemblies to connect the multiple groups of adjusting assemblies together.

7. The linear motion guide device according to claim 2, characterized in that: spring clamping grooves (470) are formed in the first assembly (410) and the second assembly (420), two ends of the spring (430) are arranged in the spring clamping grooves of the first assembly and the second assembly respectively, and the spring is firmly installed in the adjusting assembly.

8. The linear motion guide device according to claim 3, characterized in that: the first bearing (380) is provided with a rotatable screw connecting column (309), the first bearing (380) is inserted into the first mounting groove (240), the screw connecting column on the first bearing is in threaded connection with a threaded hole in the first mounting groove, and the first bearing (380) is fixed in the first mounting groove (240) through a bolt (330).

9. A method of adjusting a linear motion guide device according to claim 2, characterized in that: the method comprises the following steps: