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2021
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WHAT EFFECTS THE ACCURACY OF COORDINATOR MEASURING MACHINE (CMM)
As everyone knows that the rope is easily broken in its fragile parts.Now in our industrial measuring field,what effects the precision of coordinator measuring machine(CMM)?And we include several factors in the following content
As everyone knows that the rope is easily broken in its fragile parts.Now in our industrial measuring field,what effects the precision of coordinator measuring machine(CMM)?And we include several factors in the following content.
With the high measuring requirement in the mechanical equipment,some measuring accuracy even reach 0.01um,moreover,this 0.01um tolerance is not allowed.Then these components could have this tolerance without precious measurement.The more and more attentions are paid to accuracy in the option of coordinator measuring machine.
Normally,it is considered that there are three“enemies”in the coordinator measuring machine.
Now let’s reveal who they are.....
No.1 Dirt--it originates the unclean handling hands
It is suggest that these people who operate the 0.1㎛measurement should refer to the cleaning standard of surgeons.It is especially suitable for the operators who need to gather measuring module.If there is oil on the hands,it normally generate a oil layer film about 0.5-1㎛.In addition,if dirt invades the transmission mechanism,they will wear the transmission surface like an abrasive paste,accelerate the aging,and cause the internal department loosing.Therefore,the cleaning of precision could not be ignored although many measuring instruments have higher degree protection.Then it could guarantee the measuring equipment serve to the factory for longer period.It is necessary to clean the measuring machine with the dust-free cloth and alcohol.
No.2 Temperature--inevitable thermal expansion
In winter,people always like to warm themself near the heating radiator.But it is not allowed for the precision coordinator measuring machine.You could find this slogan“keep the components,measuring instruments and measuring position in the same temperature“.It should be far away from the heater for the measuring instruments and position.The ideal laying position for the coordinator measuring machine should be constant and it is better under 20℃and far away from the heater,air condition and no direct sun radiation;and should not be opposite the doorway.
No.3 Vibration
Some people like to put a“0.5 um”comparator near the aisle used by forklifts.And some people also put the measurement laboratory in the air compressor room or next to the banging punch.These are all wrong demonstrations.Precision measurement needs to be far away from the vibration source.For high precision Sensor,vibration will make it always unable to get a stable value and increase wrong odds of the equipment report.For example,during height measurement,some customers found that although the probe touched the workpiece,however,there is no notification sound that the measurement is complete because of vibration.The precise sensor detects that there is always a slight change in the data,so it has been unable to send a measurement signal of completion.For the mechanical structure,vibration will loosen the connection.The simple solution is away from the source of vibration,using an air-floating shock absorber.
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