TWI604144B - Linear Sliding Rail - Google Patents

Description

Linear module

The present invention relates to a slide rail, and more particularly to a linear module.

The assembly positions of the motor block and the bearing housing of the general linear module are mainly divided into two types, which are mounted on the aluminum extruded base platform and assembled on both ends of the U rail. The linear modules disclosed in TWM464559 and TWM489721 belong to this. Second class.

Please refer to TWM464559. A motor base and a bearing seat are directly mounted on the aluminum extrusion base platform. In order to ensure the installation accuracy, an additional plane is required on the base, and the nut seat and the bearing seat are installed on the plane.

Please refer to TWM489721. A motor base and a bearing seat are assembled on both end faces of the base. The end face must be drilled so that the nut seat and the bearing seat can be locked with the base.

Both of the above methods will incur additional processing costs and inconvenient assembly problems, and the motor base and the bearing housing are directly mounted on the aluminum extruded base platform. The rigidity of the aluminum extruded base platform is insufficient, the flatness is insufficient, and the deformation is easy to affect the accuracy. Moreover, the assembly of the motor base and the bearing seat on both end faces of the base also makes it difficult to accurately position or adjust the level of the motor base and the bearing seat during assembly, and there is a drawback that needs to be improved.

Therefore, it is necessary to provide a novel and progressive linear module to solve the above problems.

The main object of the present invention is to provide a linear module which has high precision and does not affect accuracy after long-term use.

To achieve the above object, the present invention provides a linear module comprising: a track base; at least one track fixed to the track base; a slide seat slidingly disposed on the at least one track; at least one drive shaft seat And being fixed to the at least one track; a transmission shaft is pivotally disposed on the at least one transmission shaft seat, and the sliding seat is coupled to drive the sliding seat to move along the at least one track.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Please refer to FIG. 1 to FIG. 4, which illustrate a preferred embodiment of the present invention. The linear module 1 of the present invention comprises a track base 2, at least one track 3, a slide 4, at least one drive shaft seat 5 and a Drive shaft 6.

The at least one rail 3 is fixed to the rail base 2, and the rail base 2 is made of an aluminum extruded material. The carriage 4 is slidably disposed on the at least one track 3. The at least one transmission shaft seat 5 is fixed to the at least one rail 3. The transmission shaft 6 is pivotally mounted on the at least one transmission shaft seat 5 and connected to the carriage 4 to drive the carriage 4 to move along the at least one rail 3.

In the embodiment, the transmission shaft 6 is a screw threaded through the sliding seat 4. The number of the at least one track 3 is two, and the two tracks 3 are arranged horizontally and in parallel, and each of the tracks 3 has a higher rigidity than the track base 2 to prevent the track 3 from being deformed. Each of the rails 3 has a polishing surface 32 having a flatness higher than the surface of the rail base 2, so that the slider 4 has a high precision movement. Preferably, the surface roughness (Ra) of the polished surface 32 of the track 3 is less than 0.4 μm, wherein Ra is the center line average roughness, which is the center line distance of the entire length of the polished surface 32. (|Y1|+|Y2|+.....+|Yn|)/n.

The sliding seat 4 further includes a sliding table 41, a connecting member 42 and at least one sliding block 43. The sliding table 41 is connected to the connecting member 42. The driving shaft 6 is threaded through the connecting member 42, and each of the sliding blocks 43 is fixed to the connecting member 42. Below the slide table 41 (see FIGS. 2 to 3) and across the polishing surface 32. The at least one transmission shaft base 5 is disposed on the grinding surface 32 and includes a bearing housing 51 and a motor base 54 . The transmission shaft 6 is pivotally mounted on the bearing housing 51 and the motor base 54 . The bearing housing 51 includes a shaft and a shaft. The drive shaft 6 is pivotally connected to the bearing 52. The motor base 54 is provided with a motor 56 for driving the drive shaft 6. Preferably, the motor base 54 can also be provided with a bearing for pivoting the drive shaft 6. And the carriage 4 is assisted to support the transmission shaft 6.

In this embodiment, each of the rails 3 is provided with a plurality of through holes 31. Preferably, the through holes 31 are countersunk holes for fastening the rail 3 to the structure of the rail base 2 without protruding. The surface of the rail 3 does not affect the movement of the slider 4. The bearing housing 51 or/and the motor base 54 can be provided with at least one inlay on the bottom surface that can be embedded in the counterbore, which helps to stabilize the fixed position. Each of the transmission shaft bases 5 is provided with a plurality of through holes 57. The bearing blocks 51 are laterally oppositely disposed with two arms 53. Each of the frame arms 53 is provided with at least one of the through holes 57. The motor base 54 is on the other side. Two opposite walls 55 are oppositely disposed, and each of the frame walls 55 is provided with at least one through hole 57 (refer to FIG. 2 and FIG. 3 ), and each of the through holes 57 corresponds to the through hole 31 and is a fastening member. Each of the rails 3, the bearing housing 51, and the motor base 54 is fixed to the rail base 2 at the same time. Preferably, the bearing housing 51 and the motor base 54 abut against the rail base 2, respectively, to enhance stability and to maintain accuracy. The bearing block 51 and the motor base 54 are fixed to the two rails 3 and the rail base 2 to ensure the parallelism of the transmission shaft 6, avoiding deflection and affecting accuracy.

In the embodiment, the linear module 1 further includes an upper cover 7 and at least one end cover 8. The upper cover 7 and each of the end covers 8 are provided for enclosing the rail base 2, the rail 3, a portion of the slide 4, the transmission shaft base 5 and the transmission shaft 6, which can prevent foreign matter from entering and interfere with the linear module 1 Actuate.

In other embodiments, the number of at least one track may be other numbers, for example, four tracks may be used to better share the load, and the track and the track base may be deformed due to excessive load bearing; the slide may also be integrated. The formed structure; the bearing seat and the motor seat can also be fixed on the rail, so that when the level of the transmission shaft is adjusted, only the bearing seat or the motor seat not fixed to the rail can be adjusted; the upper cover and The at least one end cover may also be an integrally formed structure or a structure in which the at least one end cover is integrally formed with the rail base; the linear module may also drive the sliding seat by a driving mechanism such as a chain or a belt. However, the at least one transmission shaft seat is fixed to the at least one rail; the two ends of the transmission shaft may also be provided with a fixing member that can limit the transmission shaft, such as but not limited to a C buckle.

In summary, the track of the linear module is fixed on at least one of the motor base and the bearing seat, which ensures the precision of the linear module, and the track base does not need to be separately processed and fixed to the drive shaft seat. Fixed holes for low manufacturing costs.

<TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> 1: Linear Module 2: Track Base 3: Track 31: Through Hole 32: Grinding Surface 4: Slide 41: Slide 42: Coupling 43: Slide 5: Drive Shaft 51: Housing </td> <td> 52: Bearing 53: Arm 54: Motor mount 55: Rack 56: Motor 57: Through hole 58: Fastening member 6: Transmission shaft 7: Upper cover 8: End cover </td></tr></TBODY></TABLE>

1 is a perspective view of a preferred embodiment of the present invention. 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a partially exploded view of a preferred embodiment of the present invention. Figure 4 is a cross-sectional view of a preferred embodiment of the present invention.

1: Linear module 2: Track base 4: Slide

Claims (10)

A linear module includes: a track base; at least one track fixed to the track base; a slide seat slidingly disposed on the at least one track; at least one drive shaft seat fixed to the at least one track a drive shaft pivotally disposed on the at least one drive shaft seat, coupled to the slide to drive the slide to move along the at least one track. The linear module of claim 1, wherein the at least one drive shaft mount comprises a bearing housing, the bearing housing including a bearing pivotally coupled to the drive shaft. The linear module of claim 1, wherein the at least one drive shaft base comprises a motor base pivotally disposed on the at least one motor base, the motor mount being provided for a motor assembly for driving the drive shaft. The linear module of claim 3, wherein the at least one drive shaft mount further comprises a bearing housing, the bearing housing including a bearing pivotally coupled to the drive shaft. The linear module of claim 1, wherein the drive shaft is a screw threaded through the slide. The linear module of claim 1, wherein each of the tracks has a higher rigidity than the track base. The linear module of claim 1, wherein each of the tracks has a polishing surface having a flatness higher than a surface of the track base, and the at least one drive shaft is disposed on the polishing surface. The linear module of claim 1, wherein the number of the at least one track is two, and the two tracks are horizontally and in parallel extending. The linear module of claim 1, wherein each of the rails has at least one continuous hole, and each of the drive shafts has at least one through hole, each of the through holes corresponding to the through hole and a fastening member The rails and the drive shaft seat are fixed to the rail base at the same time. The linear module of claim 4, wherein the drive shaft is a screw threaded through the slide; the number of the at least one track is two, and the two tracks are horizontally and in parallel extending; each of the tracks has a higher The rail base has rigidity; each of the rails has a grinding surface having a flatness higher than a surface of the rail base, and the at least one transmission shaft is disposed on the grinding surface; each of the rails is disposed in a plurality of Each of the drive shafts is provided with a plurality of through holes, and the bearing seats are laterally oppositely provided with two arms, each of the arms is provided with at least one of the through holes, and the motor seat is laterally opposite to the second Each of the frame walls is provided with at least one of the through holes, and each of the through holes corresponds to the through hole and is fastened by a fastening member while fixing each of the track, the bearing seat and the motor base to The rail base, the bearing seat and the motor base are respectively abutted with the rail base.