CN-117900850-B - Air-float guide rail device

CN117900850BCN 117900850 BCN117900850 BCN 117900850BCN-117900850-B

Abstract

The utility model provides an air supporting guide rail device, contains guide rail unit, slide unit and linear motor unit, the guide rail unit includes guide rail body and two air supporting piece group, slide unit slidable stride locate the guide rail unit to including middle seat and an organic whole connect in two side seats of middle seat both sides, every side seat has first guide face, first air flue, second guide face and second air flue, linear motor unit can drive slide unit for the guide rail unit produces linear movement. The high-pressure gas is introduced from the first gas guide channel and the second gas guide channel, and a gas film is generated among the first guide surface, the second guide surface and the air floating block group, so that the sliding seat unit can slide smoothly relative to the guide rail unit.

Inventors

ZENG KUNCHENG
Deng Guidun
CHEN WEIZHI
LIN WENZHONG

Assignees

东佑达奈米系统股份有限公司

Dates

Publication Date: 20260505
Application Date: 20221116
Priority Date: 20221019

Claims (8)

1. An air supporting guide rail device, contains guide rail unit, slide unit and linear motor unit, its characterized in that: The guide rail unit comprises a guide rail body made of a first material and two air floatation block groups made of a second material and fixed on the guide rail body, wherein the hardness of the second material is higher than that of the first material, the ductility of the first material is better than that of the second material, the guide rail body is provided with two rail seats and a concave space between the rail seats, each rail seat is provided with a top positioning surface positioned at one side of the concave space and a side positioning surface arranged at one side of the top positioning surface and arranged at an angle relative to the top positioning surface, the air floatation block groups respectively correspond to the rail seats, and each air floatation block group is provided with a top air floatation block fixed on the top positioning surface and a side air floatation block fixed on the side positioning surface; The sliding seat unit is capable of sliding and is spanned on the guide rail unit and is made in an integral forming mode, and comprises a middle seat and two side seats integrally connected to two sides of the middle seat, the side seats respectively correspond to the rail seat, each side seat is provided with a first guide surface adjacent to the top air floating block and positioned on one side of the middle seat, a first guide passage communicated to the first guide surface from outside, a second guide surface arranged on one side of the first guide surface and arranged at an angle relative to the first guide surface, and a second guide passage communicated to the second guide surface from outside; The linear motor unit comprises a stator installed in the concave space of the guide rail unit and a mover installed in the middle seat of the sliding seat unit and opposite to the stator, and can drive the sliding seat unit to linearly move relative to the guide rail unit.
2. The air-float guide rail device of claim 1, wherein the first material of the guide rail unit is an aluminum material and the second material is an iron material.
3. The air bearing rail device according to claim 2, wherein each rail seat of the rail unit further comprises an upper bearing groove concaved from the top positioning surface and a lower bearing groove concaved from the side positioning surface, each top air bearing block is T-shaped in cross section and provided with a top section propped against the top positioning surface and a top lower section integrally connected with the top section and embedded in the upper bearing groove, and each side air bearing block is T-shaped in cross section and provided with a side upper section propped against the side positioning surface and a side lower section integrally connected with the side upper section and embedded in the lower bearing groove.
4. The air supporting guide rail device of claim 3, wherein the guide rail body of the guide rail unit is further provided with a base integrally connected to the bottom of the guide rail seat, two first lock holes extending from the base to the upper bearing groove, two second lock holes extending from the concave space to the lower bearing groove, each top air supporting block is further provided with a first screw hole extending from the top lower section towards the top upper section, each side air supporting block is further provided with a second screw hole extending from the side lower section towards the side upper section, and the guide rail unit further comprises two first bolts penetrating through the first lock holes and being screwed in the corresponding first screw holes, and two second bolts penetrating through the second lock holes and being screwed in the corresponding second screw holes.
5. The air rail device according to claim 1, wherein each rail seat of the rail unit further comprises a turning surface arranged between the top positioning surface and the side positioning surface, and a first groove concavely arranged on one side of the side positioning surface.
6. The air rail device according to claim 5, wherein each side seat of the slider unit further has a second groove provided between the first guide surface and the second guide surface and adjacent to the turning surface, and an extension surface provided on one side of the second guide surface and opposite to the first groove.
7. The air rail device according to claim 1, wherein the slider unit further includes a main air passage that communicates the intermediate seat and the side seat, and the main air passage communicates with the first air passage and the second air passage.
8. The air-float guide rail device of claim 1, wherein the concave space of the guide rail unit is defined by a groove bottom surface and two groove side surfaces, the guide rail unit further comprises two positioning grooves concavely arranged on the groove bottom surface, and the air-float guide rail device further comprises two sensors mounted on the positioning grooves, wherein the sensors are used for sensing the original position and the limit position of the slide seat unit.

Description

Air-float guide rail device Technical Field The invention relates to precision mechanical equipment, in particular to an air floatation guide rail device. Background An existing air-float guide rail (patent publication No. CN209830882U of Chinese patent application) comprises a guide rail body, a linear motor and a slide carriage. The section of the guide rail body is in a dovetail groove shape, the slide carriage comprises an upper slide carriage and two side slide carriages, two ends of the upper slide carriage are respectively connected with the side slide carriages, two upper throttlers are arranged in the upper slide carriage, one side throttler is also arranged in the side slide carriage, the upper slide carriage and the side slide carriage jointly generate an accommodating space in the dovetail groove shape, the guide rail body is arranged in the accommodating space, the linear motor comprises a stator and a rotor, the stator is fixed in the guide rail body through a stator base, and the rotor is connected in the upper slide carriage through a rotor fixing plate. Although the air-float guide rail can achieve the expected linear displacement operation purpose, if the guide rail body is made of aluminum materials, the air film generation parts corresponding to the upper throttle and the side throttle are required to be subjected to surface treatment, and the manufacture process of the guide rail body comprises aluminum extrusion, CNC processing, grinding, hard anode, cryogenic treatment and finish grinding in sequence. The above process is limited by the length limitations of the hard anode and the deep cooling process and is costly. Disclosure of Invention The invention aims to provide an air floatation guide rail device which can solve the existing defects. The invention relates to an air-float guide rail device, which comprises a guide rail unit, a slide seat unit and a linear motor unit, wherein the guide rail unit comprises a guide rail body made of a first material and two air-float block groups made of a second material and fixed on the guide rail body, the hardness of the second material is higher than that of the first material, the ductility of the first material is better than that of the second material, the guide rail body is provided with two rail seats and a concave space between the rail seats, each rail seat is provided with a top positioning surface positioned at one side of the concave space and a side positioning surface arranged at one side of the top positioning surface and arranged at an angle relative to the top positioning surface, the air-float block groups respectively correspond to the rail seats, each air-float block group is provided with a top air-float block fixed on the top positioning surface, the sliding seat unit is capable of sliding and is arranged on the guide rail unit in a straddling way and is made of an integrated forming mode, the sliding seat unit comprises a middle seat and two side seats integrally connected to two sides of the middle seat, the side seats respectively correspond to the rail seat, each side seat is provided with a first guide surface adjacent to the top air-floating block and positioned on one side of the middle seat, a first guide channel communicated with the first guide surface from outside, a second guide surface arranged on one side of the first guide surface and arranged at an angle relative to the first guide surface, and a second guide channel communicated with the second guide surface from outside, the linear motor unit comprises a stator arranged in a concave space of the guide rail unit, and a rotor arranged on the middle seat of the sliding seat unit and opposite to the stator, the linear motor unit can drive the sliding seat unit to linearly move relative to the guide rail unit. According to the air-float guide rail device, the first material of the guide rail unit is made of aluminum, and the second material is made of iron. In the air-float guide rail device, each rail seat of the guide rail unit is also provided with an upper bearing groove concavely arranged from the top positioning surface and a lower bearing groove concavely arranged from the side positioning surface, the section of each top air-float block is T-shaped and is provided with a top upper section propped against the top positioning surface and a top lower section integrally connected with the top section and embedded in the upper bearing groove, and the section of each side air-float block is T-shaped and is provided with a side upper section propped against the side positioning surface and a side lower section integrally connected with the side upper section and embedded in the lower bearing groove. The guide rail body of the guide rail unit is further provided with a base integrally connected to the bottom of the rail seat, two first lock holes extending from the base to the upper bearing groove, two second lock holes extending from the concave space to the