The utility model discloses a combined fixture for processing and positioning thin-walled parts with threaded holes, which comprises a fixture body and a expansion body. The fixture body consists of a clamping rod with a limit end and a hollow structure. The outer surface of the clamping rod is provided with external threads matching the threaded holes of thin-walled parts, and the inner hole is provided with internal threads, and the expansion body is provided with a slot on the clamping rod. The exterior surface of the expanding core is provided with external threads matching the internal threads of the clamping rod, and the expanding body is sleeved in the fixture body through threads. During installation, the thin-walled parts are inserted into the clamping rod of the clamping body, and then the expansion core of the expansion body is screwed into the internal thread hole of the clamping rod. During the screwing process, the clamping rod expands along the cutting groove to achieve expansion and fixation. The structure of the clamping rod is simple, the manufacturing cost is low, the installation is convenient and fast, the installation is firm, and the screw thread will not be crushed at the same time, and the installation coaxiality is high, which effectively improves the processing accuracy and fixing of the parts. Coaxiality.
【技术实现步骤摘要】
一种带螺纹孔的薄壁零件加工定位组合夹具
本技术涉及一种带螺纹孔的薄壁零件加工定位组合夹具,属于零件加工定位工装、夹具领域。
技术介绍
目前,在许多管套类薄壁工件的加工中,通过数控车床车削其外表面,对薄壁工件的外部形状精度、同轴度、锥面跳动等参数要求较高时,多采用刚性芯轴类夹具装夹,加工时将刚性芯轴类夹具穿在薄壁工件的轴孔内,以其孔内表面进行定位,但是此类夹具的刚性芯轴与工件内孔采用间隙配合进行安装,定位精度低,使得其加工精度、同轴度和锥面跳动难以达到加工要求;并且存在装夹困难,切削时打滑、生产效率低等问题。尤其是当加工的薄壁工件(尤其是薄壁小型工件)轴孔为螺纹孔时,采用芯轴类夹具,不仅安装间隙大,造成较大的加工误差,而且装夹、加工过程中易压伤螺纹,严重时导致工件报废,造成物力、财力损失。
技术实现思路
本技术要解决的技术问题是提供本一种带螺纹孔的薄壁零件加工定位组合夹具,尤其适用于小型带螺纹孔的薄壁零件加工定位,可以克服现有技术的不足。为解决上述技术问题,本技术是通过以下技术方案实现的:一种带螺纹孔的薄壁零件加工定位组合夹具,它用于管套类薄壁零件装夹定位,所述薄壁零件的轴线上开设有螺纹通孔,它包括夹具体和胀紧体,所述夹具体由一体结构的限位端头和装夹杆组成,所述装夹杆为空心结构,所述装夹杆外圆表面设有与薄壁零件螺纹孔相适配的外螺纹,内孔上设有内螺纹,并且在装夹杆上开设有延通至装夹杆前端面的切槽;所述胀紧体由一体结构的扳拧端头和胀芯组成,所述胀芯外表面设有与装夹杆内螺纹相匹配的外螺纹,胀紧体通过螺纹套接在夹具体内。前述夹具体由弹簧钢制成。前述装夹杆外表面的螺纹外径 ...
【技术保护点】
1.一种带螺纹孔的薄壁零件加工定位组合夹具,它用于带内螺纹的管套类薄壁零件的装夹定位,其特征在于:它包括夹具体和胀紧体,所述夹具体由一体结构的限位端头和装夹杆组成,所述装夹杆为空心结构,所述装夹杆外圆表面设有与薄壁零件螺纹孔相适配的外螺纹,内孔上设有内螺纹,并且在装夹杆上开设有延通至装夹杆前端面的切槽;所述胀紧体由一体结构的扳拧端头和胀芯组成,所述胀芯外表面设有与装夹杆内螺纹相匹配的外螺纹,胀紧体通过螺纹套接在夹具体内。
【技术特征摘要】
1.一种带螺纹孔的薄壁零件加工定位组合夹具,它用于带内螺纹的管套类薄壁零件的装夹定位,其特征在于:它包括夹具体和胀紧体,所述夹具体由一体结构的限位端头和装夹杆组成,所述装夹杆为空心结构,所述装夹杆外圆表面设有与薄壁零件螺纹孔相适配的外螺纹,内孔上设有内螺纹,并且在装夹杆上开设有延通至装夹杆前端面的切槽;所述胀紧体由一体结构的扳拧端头和胀芯组成,所述胀芯外表面设有与装夹杆内螺纹相匹配的外螺纹,胀紧体通过螺纹套接在夹具体内。2.根据权利要求1所述的带螺纹孔的薄壁零件加工定位组合夹具,其特征在于:所述夹具...
【专利技术属性】
技术研发人员:龚少梅,马世杰,李昭桂,
申请(专利权)人:贵州航铄工业股份有限公司,
类型:新型
国别省市:贵州,52
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