When the working parts of the machine tool using miniature linear guides move, the steel balls circulate in the grooves of the bracket, and the wear of the bracket is distributed to each steel ball, thereby prolonging the service life of the linear guide. In order to eliminate the gap between the bracket and the rail, the preload can improve the stability of the rail system. The preload is obtained by installing an oversized steel ball between the rail and the bracket. The diameter tolerance of the steel ball is ±20 microns, with 0.5 micron increments. The steel balls are screened and classified and installed on the guide rails respectively. The size of the preload depends on the force acting on the steel balls. If the force acting on the steel ball is too large, the steel ball will withstand the preload for too long, which will increase the movement resistance of the bracket. There is a balance problem here; in order to improve the sensitivity of the system and reduce the movement resistance, the preload must be reduced accordingly, and in order to improve the movement accuracy and the retention of precision, it is required to have sufficient preload negative numbers, which are contradictory two. aspect. The design of the guide rail system strives to have the largest contact area between the fixed element and the moving element. This not only improves the carrying capacity of the system, but also the system can withstand the impact force generated by intermittent cutting or gravity cutting, spread the force widely, and expand the bearing capacity. The area of force. In order to achieve this, the groove shape of the guide rail system has various shapes, and there are two representative ones, one is called the Gedai type (pointed arch type), the shape is a semi-circular extension, and the contact point is the apex; One is circular arc shape, which can also play the same role. No matter what kind of structure, there is only one purpose, and strive to have more rolling steel ball radius contact with the guide rail (fixed element).
시스템의 성능 특성을 결정하는 요소는 롤링 요소가 가이드 레일에 접촉하는 방식이며 문제의 핵심입니다. 고정 요소와 이동 요소 사이에 가장 큰 접촉 면적을 갖도록 노력하십시오. 이렇게 하면 시스템의{0}지지력을 향상시킬 수 있을 뿐만 아니라 시스템이 간헐적 절단 또는 중력 절단에 의해 생성된 충격력을 견딜 수 있습니다. , 힘을 널리 퍼뜨리고 힘을 받는{1}}영역을 확장합니다. 이를 달성하기 위해 가이드 레일 시스템에는 다양한 홈 모양이 있습니다. 대표적으로 2가지가 있습니다. 하나는 Gedai 유형 (첨부 아치 유형)이라고하며 모양은 반원형 확장이며 접점은 정점입니다. 다른 종은 호-모양을 하고 있으며 동일한 역할을 할 수도 있습니다.
Why not give us a linear challenge?
