基于齿轮箱体零件特征相似的夹具设计

Fixture design similar gearbox parts based on feature

针对具有相似特征的单件、小批齿轮箱箱体零件仍采用每一零件、每道工序设计专用夹具而影响工艺准备效率,以及生产成本居高不下的问题,开展了对于相似齿轮箱体零件相似特征的分析,提出了相似箱体零件在同一工序上共用一套夹具,夹具要满足的要求,采用了一种由标准化模块与专用模块组合的结构可调的夹具设计方法。该方法基于夹具设计标准件库和模板式的专用模块,同时借鉴了组合夹具、成组夹具和专用夹具的优点。夹具结构中的专用件在设计制造时融入了组合夹具的思想,并将其做成参数化的企业通用标准件。以镗孔夹具实施前后的实际使用作对比,研究结果表明,相对于传统专用夹具设计,该方法明显提高了相似齿轮箱体夹具的设计制造速度,同时生产现场减少了许多相似的夹具,能够有效降低生产准备成本。

Aiming at the problems that every parts of each working procedure design special jig is still used to the similar characteristics of single pieee and small batch gearbox parts and process efficiency is influenced, production cost is lifted, the similar gearbox parts similar characteristics analysis has been carried out, the similar gearbox parts in the same process to share a set of fixture and jig to satisfy the re- quirements has been pot forward, a kind of from standardize the mold piece combines with appropriation mold piece of structure, adjustable fixture design method was adopted. The method was based on standard parts library and template type module, and was drawn on modular fixture, /he advantages of group fixture and special fixture, special parts design and manufacture of integrated into the thought of modular fix- ture was used, and it was made into the enterprise＇s parameter, general,standard piece. And boring fixture subjeet before and after the prac- tical use was compared： The results show that, compared with traditional special fixture design, this method obviously improves the similar gearbox fixture design and manufacture of speed, also reduces many similar fixture manufacturing, can effectively reduce the cost of produc- tion preparation.