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图示千分表卡规可用于曲轴轴颈φ50_(0.025)~(0.010)mm直径、圆度和直线度100%检验.卡规由一个定位销4和四个螺钉5相互连接的本体1和2组成,档销3按尺寸ι限制工件的位置,保持两臂长40±0.2mm.为防止温度误差对测量结果的影响,用螺钉6在本体2上固定有绝缘材料制成的夹板9.在两测量钳口处有硬度HRC55～60的熔焊材料(сармайт).当尺寸A为50mm时,两钳口相互平行偏差±0.005mm,卡规处于工作状态时(A=50),两钳口之间的测量力为0.039～0.049MPa,该力的大小用螺钉7(靠改变连接片的厚度s)调节.
The indicator dial gauge can be used for checking the diameter, roundness and straightness of the camshaft journal φ50_ (0.025) ~ (0.010) mm. The gauge is composed of a positioning pin 4 and four screws 5, 2, and the dowel pin 3 limits the position of the workpiece according to the dimension ℓ, so as to keep the length of both arms 40 ± 0.2mm. To prevent the influence of the temperature error on the measurement result, the splint 9 made of insulating material is fixed on the body 2 with the screw 6. At the two measuring jaws there is a welding material with a hardness of HRC 55 to 60. When the dimension A is 50 mm, the two jaws are offset by ± 0.005 mm in parallel to each other and the jaws are in operation (A = 50) The measured force between the mouth 0.039 ~ 0.049MPa, the size of the force with screws 7 (by changing the thickness of the connecting sheet s) to adjust.