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我国使用的镗孔工具种类较多,结构各异。目前常用可调镗头的结构有螺母传动的、偏心式的等,这些镗头一般调整精度在0.01mm以上,精度不够高。瑞士凯沢公司曾在我国展出的镗头,其调整精度为0.005mm,带有千分尺杆的调整精度为0.002mm。我所试制成功,并已用于生产的一种高精度可调式镗头,其微调精度为0.00167mm。一、结构与调整镗头的结构如图所示,由镗头体、微调滑板、粗调滑板、螺纹旋套和螺纹滑套等主要零件组成。镗头体是镗头的基件,具有足够的强度和刚性,能保证精镗加工的要求。
Boring tools used in China more types, different structures. Currently used adjustable boring head structure with a nut drive, eccentric, etc., these boring head generally adjust the accuracy of 0.01mm or more, the accuracy is not high enough. Swiss Kaituo company exhibited in our country boring head, the adjustment accuracy of 0.005mm, with a micrometer rod adjustment accuracy of 0.002mm. I have successfully trial production, and has been used in the production of a high-precision adjustable boring head, the fine-tuning accuracy of 0.00167mm. First, the structure and adjustment Boring head structure shown in the figure, from the boring head body, fine-tuning skateboarding, rough skateboarding, screw thread sets and threaded sleeve and other major components. Boring head is boring head base, with sufficient strength and rigidity, to ensure the precision boring processing requirements.