The invention discloses a fan-shaped cavity static rotary table oil pad with rounded corners, which belongs to the technical field of heavy duty machine tools. The main part of the oil cushion of the fan-shaped static pressure swing table is a sector oil pad, and the middle part of the sector oil pad is four fan-shaped cavities with rounded corners, and the sector cavity is an oil cavity. The oil in the position of the four corners is not easy to be thrown out in time, forming the local accumulation of heat, improving the oil temperature, reducing the stiffness and carrying capacity of the oil film. With rounded fan-shaped oil pad due to its matching with the rotary motion, easy oil exchange and the temperature of the oven, a good solution to the influence of the temperature rise of oil. The design of the double inlet port with left and right symmetry makes the oil evenly distributed in the oil cavity, which makes the oil cavity pressure evenly distributed, and improves the bearing performance of the oil pad. Then the working efficiency and machining accuracy of the turntable are improved, which provides more technical support for the related theory of the static pressure support.
【技术实现步骤摘要】
一种带圆角的扇形腔静压回转台油垫
本专利技术涉及一种带圆角的扇形腔静压回转台油垫,属于重载类机床
。
技术介绍
静压支撑因其承载力大、摩擦阻力小、精度高等特点被广泛应用于重载类机床。静压转台作为重载机床关键零部件之一,对机床的加工精度起到决定性的作用。在转台高速重载运转状态下,由于油膜和转台发生摩擦生热,温升引起油膜厚度减小,随之承载能力就会变小。因此使得静压转台运转效率降低,加工精度下降,严重影响机床加工精度,对机床的整体加工精度和整机性能评价造成了不良的影响。
技术实现思路
本专利技术重点解决静压转台由于温升降低油膜承载性能的问题,降低温升,减少能耗,提高油垫的承载性能,从而提出一种能应用于实际加工的,加工简单的带圆角的扇形腔静压油垫来克服这一难题。为了解决这一难题本专利技术采用的技术方案如下:一种带圆角的扇形腔静压回转台油垫,其特征在于:该扇形腔静压回转台油垫的主体是扇形油垫(1),扇形油垫(1)的中间为四个角部均为圆角的扇形腔(1.3),扇形腔(1.3)为油腔。扇形腔(1.3)内布置有进油口a(1.1)和进油口b(1.2),进油口a(1.1)和进油口b(1.2)左右对称布置在扇形腔(1.3)内,进油口a(1.1)和进油口b的对称布置形式便于润滑油能扩散到整个扇形腔(1.3)中,提供足够的支撑力。扇形油垫(1)均匀的布置在底座(2)上。本专利技术与已有的技术相比有如下益处:传统的扇形油腔在转台做圆周运动时,在四个角的位置的油液不易及时甩出,形成了热量的局部堆积,提高了油液温度,降低了油膜的刚度和承载能力。带圆角的扇形油垫由于其与回转运动相匹配,易 ...
【技术保护点】
一种带圆角的扇形腔静压回转台油垫,其特征在于:该扇形腔静压回转台油垫的主体是扇形油垫(1),扇形油垫(1)的中间为四个角部均为圆角的扇形腔(1.3),扇形腔(1.3)为油腔。扇形腔(1.3)内布置有进油口a(1.1)和进油口b(1.2),进油口a(1.1)和进油口b(1.2)左右对称布置在扇形腔(1.3)内,进油口a(1.1)和进油口b的对称布置形式便于润滑油能扩散到整个扇形腔(1.3)中,提供足够的支撑力。
【技术特征摘要】
1.一种带圆角的扇形腔静压回转台油垫,其特征在于:该扇形腔静压回转台油垫的主体是扇形油垫(1),扇形油垫(1)的中间为四个角部均为圆角的扇形腔(1.3),扇形腔(1.3)为油腔。扇形腔(1.3)内布置有进油口a(1.1)和进油口b(1.2),进油口a(1.1)和...
【专利技术属性】
技术研发人员:赵永胜,赵开瑞,余维哲,鹿慧丰,
申请(专利权)人:北京工业大学,
类型:发明
国别省市:北京,11
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