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How to reduce the cylinder precision machinery parts processing coaxiality error

by:Xavier      2020-05-25
How to reduce the cylinder type of precision machinery parts processing coaxiality error after a good precision machinery parts processing, whether during processing, or processed products, we all need to detect all aspects, which besides dimensions need to meet the tolerance requirements, cylindrical type of precision parts and components, coaxial degree requirements is quite high. It belongs to the form tolerance, it is necessary to use three coordinate measuring machine for testing, not only intuitive and convenient, and high precision of measurement results. But in actual measurement work, sometimes there will be a great error in the measurement results, not a real coaxiality error of precision parts. To this, we analysed and studied, the cause of error is the datum axis itself appeared deviation, we adopt the following methods to reduce or avoid the error of measurement. 1. To measure mechanical parts processing parts alignment for straightness measurement: suitable for short workpiece inspection. Alignment can be changed for straightness measurement, this case axis offset minimal impact on assembly, axis offset of the actual measurement is measurement of straightness error of the axis of the attachment. Method is: a few section respectively on two small cylindrical test circle, then select the several round, these a few circle is used to establish a straight line, the line in three coordinate measuring machine measurement of straightness, the mechanical parts processing parts alignment tolerance values are available as a straightness tolerance values to determine whether the parts qualified, this approach shorter working sections, the better the results. 2. Increasing the distance between the reference section: when the benchmark shaft and hole relatively long workpiece tested, in the measurement datum, increase as far as possible in the first section and the distance between the second section, the reduced due to the measuring error caused by the datum axis is on the high side, if the benchmark is long enough, at the same time benchmark and checked cross section, human error will disappear naturally. 3. Establish a common axis: on the datum measured cylindrical columns and cross section in the test, the cross section of attachment as a common axis, and then calculate the benchmark measured cylindrical columns and common axis coaxial degree, take the maximum as the cylinder axis and benchmark face, face to the other datum of verticality, indirectly, to determine whether a common axis correctly, if beyond the limits of tolerance, that hole or shaft and face is not vertical, even alignment measurement of qualified, the parts is unqualified, may be due to the precision of the machine tool can not meet the requirements or frame-up parts clamping and cutting parameters is not reasonable when parts processing. The above information is derived from the hardware machinery processing factory Xavier company in shenzhen. More products please click on the link to see http://www for details. 瓦乌。 cn/products- 155088 - 0 - 0. HTML product purchase link https://cfsshilihe. 1688. com
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