The invention relates to a new precision fixture. It includes spindle conversion block, conversion chuck, clamping positioning fixture and pull rod. The conversion chuck is fixed on the machine tool. The front end of the clamping positioning fixture is positioning tube. The outer diameter of the positioning tube is smaller than the inner diameter of the workpiece's inner hole. There is a tension gap slot on the positioning tube. The back end of the pull rod passes through the clamping positioning fixture and the switching chuck successively, and the back end of the pull rod is threaded to the main shaft conversion block. The front end of the tie rod is an inverted circular table. The front end of the tie rod matches with the positioning tube of the clamping positioning tool. The radius of the front end of the tie rod is slightly larger than the inner diameter of the positioning tube and slightly smaller than the inner diameter of the inner hole of the workpiece. The back end of the spindle conversion block is connected with the spindle of the machine tool. The invention relates to a new precision fixture, after the inner hole of the workpiece is fitted with the positioning tube, the positioning tube is stretched by a tie rod, so that the positioning tube and the inner hole are fully braced and fixed, and the workpiece is not easy to deform; the invention is suitable for clamping all workpieces with the characteristics of the inner hole.
【技术实现步骤摘要】
精密新型夹具
本专利技术涉及一种精密新型夹具。属于机械
技术介绍
制造业是所有与制造有关的行业总称,是一个国家国民经济的支柱产业。在现代科学技术日新月异的发展,机电产品日趋精密和复杂,且更新换代速度加快,改型频繁,用户的需求也日趋多样化和个性化,中小批量的零件生产越来越多。这对制造业的高精度高效率和高柔性提出了更高的要求,提供满足不同加工需求、迅速高效、低成本的生产制造市场。现有含内孔工件的装夹装置,不仅结构复杂,并且装夹难度大,同时在装夹过程中容易导致工件变形。
技术实现思路
本专利技术的目的在于克服上述不足,提供了一种精密新型夹具。本专利技术的目的是这样实现的:一种精密新型夹具,其特点是:它包括主轴转换块、转换卡盘、装夹定位工装和拉杆,转换卡盘固定在机床的原卡盘上,装夹定位工装位于转换卡盘的前侧,装夹定位工装的前端为定位管,定位管的外径小于工件的内孔的内径,定位管上开有张紧间隙槽,拉杆的后端依次穿过装夹定位工装和转换卡盘,且拉杆的后端与主轴转换块螺纹连接,拉杆的前端为倒置的圆台状,拉杆的前端与装夹定位工装的定位管配合,且拉杆的前端面的半径略大于定位管的内径且略小于工件的内孔的内径,主轴转换块的后端与机床主轴连接。进一步的,主轴转换块、转换卡盘和拉杆采用碳钢45钢制成,经热处理后硬度HRC54~58°。进一步的,装夹定位工装采用弹簧钢制成,经热处理后硬度HRC48~50°。与现有技术相比,本专利技术的有益效果是:本专利技术一种精密新型夹具,工件内孔与定位管贴合后,通过拉杆拉紧,将定位管撑开,使定位管与内孔完全撑紧固定,工件不易变形;本专利技术适用于 ...
【技术保护点】
1.一种精密新型夹具,其特征在于:它包括主轴转换块、转换卡盘、装夹定位工装和拉杆,转换卡盘固定在机床的原卡盘上,装夹定位工装位于转换卡盘的前侧,装夹定位工装的前端为定位管,定位管的外径小于工件的内孔的内径,定位管上开有张紧间隙槽,拉杆的后端依次穿过装夹定位工装和转换卡盘,且拉杆的后端与主轴转换块螺纹连接,拉杆的前端为倒置的圆台状,拉杆的前端与装夹定位工装的定位管配合,且拉杆的前端面的半径略大于定位管的内径且略小于工件的内孔的内径,主轴转换块的后端与机床主轴连接。
【技术特征摘要】
1.一种精密新型夹具,其特征在于:它包括主轴转换块、转换卡盘、装夹定位工装和拉杆,转换卡盘固定在机床的原卡盘上,装夹定位工装位于转换卡盘的前侧,装夹定位工装的前端为定位管,定位管的外径小于工件的内孔的内径,定位管上开有张紧间隙槽,拉杆的后端依次穿过装夹定位工装和转换卡盘,且拉杆的后端与主轴转换块螺纹连接,拉杆的前端为倒置的圆台状,拉杆的前端与装夹定位工装的...
【专利技术属性】
技术研发人员:李坚,谢建文,庞智充,
申请(专利权)人:斯耐翔精密机械苏州有限公司,
类型:发明
国别省市:江苏,32
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