发动机所用的活塞,有一定的特殊规格,一般说来是锥形的椭圆体。由于活塞大小形状的不同,故对圆锥度椭圆度的要求也不一律,稍有偏差以致超出公差范围以外时,即直接影响到发动机的装配质量和使用寿命。制造活塞时都采用专门的活塞磨床来进行机械加工,但国内一般汽车或发动机修理工厂,很少有专门发动机活塞的活塞磨床设备,对检修配制均受到一定影响。兹特介绍我厂七级磨工与技术人员协作设计改装成功的、可附装于磨床或万能工具磨床上的活塞磨具,即可代替专门的活塞磨床的设备和使用。它构造精巧,总重只11公斤;装卸灵便,在磨床上安装和拆卸,仅需两分钟,而磨出的椭圆度可达到一级精度标准。对变形活塞的修正或对换下的旧活塞的修 Pistons used in the engine, there are certain special specifications, generally speaking, a cone-shaped ellipsoid. Due to the different size of the piston, so the conicity ovality requirements are not uniform, a slight deviation out of tolerance outside the range, which directly affects the assembly quality and service life of the engine. Pistons used in the manufacture of special piston grinder for machining, but the domestic general automobile or engine repair shop, there are few special engine piston piston grinder equipment, the maintenance of the preparation are subject to a certain extent. Zite introduced seven plant workers and technical staff in collaboration with the design and modification of the successful design, can be attached to the grinder or universal tool grinder on the piston, you can replace the special piston grinder equipment and use. It is constructed compact, weighing only 11 kg; loading and unhindered, installed and disassembled on the grinder, just two minutes, while the mill out of the ovality can reach a standard accuracy. Correction of deformation of the piston or on the replacement of the old piston repair