机械精度设计实验报告.doc

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1、西安交通大学实验报告课程：精度设计实验（七）实验名称：丝杠传动机构定位误差测量实验一、实验目的：1、了解光栅测量原理。2、了解丝杠传动机构定位误差的种类和测量方法。二、实验内容：测量丝杠传动机构的定位误差。三、实验数据和分析1、计算丝杆螺距误差和螺距累积误差牙侧序号线纹尺读数Xi(mm)螺距号实际螺距Pi(mm)螺距偏差（um）螺距号螺距累加偏差∑△Pi(um)0-3.81514.0055151-7.82024.00881~2132-11.82834.00221~3153-15.83044.00551~4

2、204-19.83554.00441~5245-23.83963.999-11~6236-27.83873.989-111~7127-31.82783.992-81~848-35.81993.981-191~9-159-39.800103.999-11~10-1610-43.799113.980-201~11-3611-47.779123.996-41~12-4012-51.775133.997-31~13-4313-55.772143.998-21~14-4514-59.770153.993-71~15

3、-5215-63.763164.00001~16-5216-67.763174.00001~17-5217-71.763183.996-41~18-5618-75.759194.00111~19-5519-79.760203.994-61~20-6120-83.754214.00001~21-61421-87.754224.00111~22-6022-91.755234.00001~23-6023-95.755243.997-31~24-6324-99.752254.00331~25-6025-103.7

4、55264.00331~26-5726-107.758274.00221~27-5527-111.760284.00221~28-5328-115.762294.00661~29-4729-119.768304.00221~30-4530-123.770314.00441~31-4131-127.774323.999-11~32-4232-131.773334.00001~33-4233-135.773344.00111~34-4134-139.774354.00551~35-3635-143.77936

5、4.00111~36-3536-147.780374.00331~37-3237-151.783384.017171~38-1538-155.800394.00221~39-1339-159.80240由上述数据可知：丝杆螺距误差△P={

6、△Pi

7、max}=0.020mm丝杆螺距累计误差为：△P∑(L)=(∑△Pi)max-(∑Pi)min=0.024-(-0.063)=0.087mm41、回程误差的计算牙侧序号正向（mm）反向（mm）正向回程误差（mm）03.769-3.815-0.04617.78-7

8、.820-0.040211.785-11.828-0.043315.791-15.830-0.039419.801-19.835-0.034523.81-23.839-0.029627.815-27.838-0.023731.825-31.827-0.002835.821-35.8190.002939.825-39.8000.0251043.824-43.7990.0251147.82-47.7790.0411251.829-51.7750.0541355.827-55.7720.0551459.828-

9、59.7700.0581563.825-63.7630.0621667.829-67.7630.0661771.824-71.7630.0611875.82-75.7590.0611979.809-79.7600.0492083.805-83.7540.0512187.805-87.7540.0512291.812-91.7550.0572395.808-95.7550.0532499.811-99.7520.05925103.813-103.7550.05826107.811-107.7580.0532

10、7111.929-111.7600.16928115.827-115.7620.06529119.841-119.7680.07330123.84-123.7700.07031127.85-127.7740.07632131.854-131.7730.08133135.865-135.7730.09234139.866-139.7740.092435143.855-143.7790.07636147.841-147.7800.