作为机床夹具常用零件的V形块,通常采用20号钢制造,渗碳0.8～1.2mm,淬火HRC60～64。这种办法制造的V形块,实际使用中耐磨性能不够理想,使用寿命较短。图1 V形块结构示意图我们改进了制造方法(见图1),V形块采用45号钢,在V形块与工件接触处加工尺寸合适的槽,焊入刀头硬质合金YT15,焊牢后将V形面磨平。制造过程中不再进行热处理。由于硬质合金耐磨性极好,在使用实践中,V形块寿命延长约15～20倍。改进后V形块结构简单、经济耐用,在实 As a common part of the machine tool V-shaped block, usually made of 20 steel, carburizing 0.8 ~ 1.2mm, quenching HRC60 ~ 64. V-shaped block made in this way, the actual use of wear resistance is not ideal, short life. Figure 1 V-block structure diagram We improved the manufacturing method (see Figure 1), V-shaped block with 45 steel, V-shaped block in contact with the workpiece processing the appropriate size slot, welding head carbide YT15, welding After the prison V-shaped surface polished. No heat treatment is done during the manufacturing process. Due to the excellent wear resistance of cemented carbide, V-block life expectancy is about 15 to 20 times longer in practical use. Improved V-block structure is simple, economical and durable, in fact