TWI661135B - Structure of micro sliding base and linear slide rail - Google Patents

Abstract

The invention is a miniature slide structure with feet, such as a slide of a linear slide. The linear slide rail includes the slide base and a rail piece, and the slide base is straddled on the rail piece, whereby the slide base can reciprocate on the rail piece. The rail extends in one direction; the slide includes a platform and two legs extending from the platform. The slide is straddled on the slide by the legs, and the platform has a mounting surface. When a working platform is installed, the mounting surface of the platform is mirror-processed to control the roughness Ra of the mounting surface between 0.01 micrometer and 0.1 micrometer, which can reduce the amount of deformation of the foot when the working platform is installed. .

Description

Miniature slide structure and linear slide

The invention relates to a micro-slider structure with feet, which can be applied to linear slides or other fields. When the slider and the mounting surface are small, the mounting surface of the platform of the slider is mirror-processed to control the mounting surface. The invention is to reduce the roughness of the foot of the sliding seat after installing the work platform. The present invention is also a linear slide rail. The linear slide rail includes the miniature slide base and a rail piece. The miniature slide base is placed across the rail piece for reciprocating movement.

Referring to the second figure, the linear slide rail is formed by an extended rail piece (1) and a slide base (2) straddling the rail piece (1), so that the slide base (2) can A reciprocating motion is performed on the rail member (1), and a working platform (3) is further installed on a mounting surface (211) of a platform (21) of the slide base (2) according to the working environment requirements, so that the The working platform (3) can move along with the sliding seat (2) to perform the required processing.

In general, when the manufacturing of the slider (2) is completed, the mounting surface (211) of the platform (21) is polished, but the roughness Ra can only be controlled to a minimum of 0.2 microns. about.

The inventor found that when the working platform (3) is mounted on the mounting surface (211) of the platform (21) of the slide base (2) and the mounting surface (211) is reduced to a certain extent, the slide base (2) The feet (22) used to straddle the rail (1) are slightly deformed due to the force of the work platform (3) locked into the mounting surface (211). For example, as shown in the third and fourth figures, according to different installation conditions, the feet (22) of the slide (2) may be slightly retracted or opened. In the figure, the original distance between the two feet (22) Is D, when the foot (22) is deformed because the mounting surface (211) is locked on the work platform (3), the distance is d [in order to show the foot (22) of the slide Deformation status, which is drawn with an exaggerated amount of deformation in the diagram, does not represent the amount of deformation of the actual product], and when the slide (2) and the mounting surface (211) are smaller, the work platform (3) is installed Later, the roughness of the mounting surface (211) has a greater effect on the amount of deformation of the leg portion (22).

Refer to FIG. 5A and FIG. 5B for another effect of the deformation of the feet (22) of the slide base (2). The fifth figure A shows an undeformed form. When a rolling member (4) is placed between the sliding seat (2) and the rail member (1), the rolling member (4) and the sliding seat (2) The clearance on the inner surface of the foot (22) is t, and the clearance t is designed to make the rolling member (4) roll smoothly without causing the slider (2) to vibrate / shake or run smoothly. Width; as shown in FIG. 5B, when the feet (22) of the slider (2) are deformed, for example, the two feet (22) are deformed and opened, so when the rolling element (4) is inserted When the sliding seat (2) and the rail member (1), the gap between the rolling member (4) and the inner surface of the foot (22) of the sliding seat (2) becomes larger or smaller as t ', Therefore, there is a gap change amount Δt = t'-t. An excessively large gap change amount Δt will cause the slider (2) to generate a phenomenon similar to vibration or shaking, resulting in a larger working error of the working platform (3). Affects the work accuracy, and too small clearance will make the slide run smoothly and affect the work accuracy.

Referring to the sixth figure, the reason for this phenomenon is that the surface of the mounting surface (211) is rough, making the working platform (3) and the mounting surface (211) of the platform (21) of the slide (2) Multi-point contact is formed between each other. As the mounting surface (211) is smaller, the unevenness in roughness is more obvious. Therefore, when the mounting surface (211) is fixed to the work platform (3), the mounting surface (211) ) Is subject to extreme stress, and the uneven distribution of force causes uneven distribution of force, causing deformation of the foot (22).

For larger slides with larger mounting surfaces, this surface roughness non-uniformity will be reduced, and because the rigidity of the feet becomes larger, it is not easy to deform due to the surface roughness of the mounting surface, so the amount of deformation can be Ignored, but for miniature slides and mounting surfaces, this amount of deformation will have a certain impact on the accuracy of the application, such as miniature linear slides, such a slight amount of deformation will affect the performance of the work accuracy.

Based on the above reasons, in order to overcome this deficiency, the present invention proposes a miniature slide structure, including: a platform and two legs extending opposite to the platform, the platform has a mounting surface, the roughness Ra of the mounting surface is 0.01 Micron to 0.1 micron.

The invention further proposes a linear slide rail, comprising: a rail piece extending in one direction; a slide base including: a platform and two legs extending opposite to the platform, the slide base being straddled by the legs On the slide rail, the platform has a mounting surface, and the roughness Ra of the mounting surface is between 0.01 micrometer and 0.1 micrometer.

Among them, the mounting surface of the platform is further controlled by a polishing process for its roughness Ra.

According to the above technical features, the following effects can be achieved: through a more precise polishing process, the roughness of the mounting surface of the platform is controlled without changing the flatness of the mounting surface, so that after the working surface is installed on the mounting surface, the amount of deformation of the foot can Reduce and improve the accuracy of the work platform.

(1) ‧‧‧Track pieces

(2) ‧‧‧Slide

(21) ‧‧‧Platform

(211) ‧‧‧Mounting surface

(22) ‧‧‧foot

(3) ‧‧‧Working platform

(4) ‧‧‧Rolling pieces

(D) ‧‧‧Original distance between two feet

(d) ‧‧‧ The space between the two feet after the work platform is locked due to the installation surface

(t) ‧‧‧ Under normal conditions, the clearance between the rolling element and the inner surface of the foot of the slider

(t ’) ‧‧‧The gap between the rolling element and the inner surface of the foot of the slide when the foot is deformed and expanded

[First image] It is a conventional linear slide rail. The mounting surface of the platform of the slide base is subjected to a grinding process. The roughness Ra is generally greater than or equal to 0.2 micrometers. When the mounting surface is locked to the working platform, the linear slide of the present invention In the rail, the mounting surface of the sliding platform is polished to control the roughness Ra between 0.01 micrometer and 0.1 micrometer. When the mounting surface is locked to the working platform, the experimental data comparison chart of the deformation amount of the foot of the sliding platform .

[Second picture] is a structural diagram of a conventional linear slide.

[Third figure] is the first schematic diagram of the deformation of the foot after the working platform is installed on the mounting surface of the conventional linear slide.

[Fourth figure] Schematic diagram 2 of the deformation of the foot after the installation platform of the sliding seat of the conventional linear slide is installed.

[Fifth Figure A] is the mounting surface of the sliding seat of the conventional linear slide rail. After the work platform is installed, under normal conditions, there is a gap t between the rolling member and the inner surface of the foot of the sliding seat.

[Fifth Figure B] is the mounting surface of the sliding seat of the conventional linear slide rail. After the work platform is installed, when the feet are deformed and expanded due to stress, there is a gap t 'between the rolling member and the inner surface of the foot of the sliding seat.

[Sixth figure] It is a schematic diagram of forming a multi-point contact between a mounting surface of a slide seat of a conventional linear slide rail and a working platform.

Synthesizing the above technical features, the micro slide structure and the main effects of the linear slide of the present invention will be clearly shown in the following embodiments. Although the following embodiments are described with the linear slide, the micro slide of the present invention is not only Limited to use on linear slides. In the miniature slider according to the present invention, the definition of miniature means that the area of the mounting surface of the miniature slider is between 10 square millimeters (mm ² ) to 500 square millimeters (mm ² ).

Examples of the linear slide rail of the present invention include: A rail piece extends along a direction; a slide base includes: a platform and two legs extending opposite to the platform, the slide base is straddled on the slide rail by the foot portion, wherein the platform has a The mounting surface has a roughness Ra between 0.01 micrometer and 0.1 micrometer. Among them, the mounting surface of the platform is further controlled by a polishing process for its roughness Ra.

The configuration relationship between the aforementioned rails and the slide has been described in the prior art of this case. In this embodiment, only the actual experiment of the roughness of the mounting surface of the platform of the slide according to the present invention will be presented. The amount of deformation of the foot of the slide after the work platform is locked. At the same time, the mounting surface of the platform of the conventional sliding seat is provided. The amount of deformation of the foot of the sliding seat when the working platform is not locked and after the working platform is locked is provided for comparison, thereby explaining the effect of the present invention.

Referring to the first figure, a batch of slides with a roughness Ra of 0.2 micrometers of the mounting surface is controlled by a conventional grinding method to perform experiments, and different sizes of model 1, model 2, model 3, and model 4 are used. The mounting surface dimensions are 160mm ² , 120mm ² , 90mm ² , and 50mm ² respectively. It can be seen from the figure that when the mounting surface of the slide seat is locked to the working platform, the deformation amount of the foot portion of the slide seat is randomly dispersed between 4 microns to 16 microns. For the miniature linear slide, as shown in Figures 5A and 5B, △ t difference value will be generated, where △ t = t'-t is the workbench platform (3) locked into the The clearance t between the rolling member (4) in front of the sliding seat (2) and the inner surface of the foot (22) of the sliding seat (2) and the workbench platform (3) are locked into the sliding seat (2), and the rolling is performed. The difference value of the gap t 'between the piece (4) and the inner surface of the leg portion (22) of the slide seat (2) is too large or too small. Such a difference value Δt is sufficient to affect the accuracy of the work platform.

According to the present invention, the batches of model 1, model 2, model 3, and model 4 are polished to control the roughness of the mounting surface and maintain the original flatness. It can be seen from the figure that after the mounting surface of the platform is polished, when the mounting surface is locked to the working platform, the deformation of the foot of the slide seat falls within 0.3 μm to 1.2 μm, and the delta difference will be It becomes extremely small, so that the working accuracy of the miniature linear slide bearing the working platform can be greatly improved.

Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood, but the above-mentioned embodiments are only preferred embodiments of the present invention, and the implementation of the present invention cannot be limited in this way. The scope, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, are all within the scope of the present invention.

Claims (4)

A miniature slide base structure is used to install a work platform to make the work platform reciprocate on a rail along with the slide base structure. The slide base structure includes a platform and two legs extending opposite the platform. The platform has a mounting surface, the roughness Ra of the mounting surface is between 0.01 micrometer and 0.1 micrometer, and the mounting surface is used for the installation of the working platform. The sliding seat structure described in item 1 of the scope of the patent application, wherein the mounting surface of the platform is further controlled in roughness Ra by a polishing process. A linear slide rail is used to install a work platform to make the work platform reciprocate. The linear slide rail includes: a rail piece extending in a direction; a slide seat including a platform; Two feet, the slide rests on the slide rail through the feet, wherein the platform has a mounting surface, the roughness Ra of the mounting surface is between 0.01 micrometer and 0.1 micrometer, and the mounting surface is provided for the Work platform installation. The linear slide rail described in item 3 of the scope of the patent application, wherein the mounting surface of the platform is further controlled by a polishing process for its roughness Ra.