Sine: also known as sine-foot sine sine definition of gauge with the gauge block measuring the angle and taper etc., also known as the sine-foot. It mainly consists of a steel rectangular and fixed in two of their both ends of the same diameter steel cylinder. Two cylindrical axis line distance L is 100 mm or 200 mm. The picture shows the use of the sine measurement cone gauge. In a right triangle, sinα = H / L, where H is the amount of block group size, that point of view be regarded as public by the measured angle. Micrometer at both ends, showing the value of the difference may be to obtain the error of the measured angle. Sine is generally used to measure the angle of less than 45 °, measuring less than 30 ° angle accuracy of up to 3 "to 5". 
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 Sine with the use of standard angle of the sine principle, workpiece angle and the inner and outer cone a precision measuring instrument for the the Millisecond comparisons measurement in the horizontal direction. Accuracy of 0, 1. 
 A sine face should not seriously affect the appearance and performance of the cracks, scratches, slag and other defects. 
 2, the hardness of the sine main face shall not less than 664HV hardness of the cylindrical face shall not be less than 712HV, the baffles face shall not be less than the hardness of 478HV. 
 3, sine the main face of roughness Ra maximum allowable value of 0.08μm, the maximum allowable value for the cylindrical face surface roughness Ra 0.04μm, the face of the bezel surface roughness Ra of the maximum allowable value of 1.25 μm. 
 4, the sine of each part should be to the magnetic body and cylindrical stability of the processing must be carried out. 
 Sine should be able device into any angle within the range of 0 ° to 80 °, its structural rigidity and part strength should be able to adapt to the grinding conditions of work, each part should be easy disassembly and repair. 
 6, the sine of the cylinder should be screw fixed reliably in the main and shall not cause the cylinder and the main deformation; tightened the screws shall not be exposed to the cylindrical surface. Fixed cylindrical screw holes on the main may not show their face. 
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 Contact: Xin Yue