Stretch film
packaging machine gear precision.
Gear is the indispensable one of stretch film
packaging machine components, in the process of work, the precision of gear determines the stretch film packaging machine precision of each link operation, then the gear precision for stretch film packaging machine and what are the effects?
a, motion accuracy
stretch film packaging machine gear precision.
In order to correctly convey movement or dividing, ideally, require active stretch film vacuum packaging machine gear around a point of view, driven gear according to transmission ratio accurately through the corresponding relationship between, but because there are a error in the processing, tooth in circular impossible is evenly distributed, and driven wheel Angle to the practical and theoretical Angle between the inevitable errors.
in order to satisfy the stretch film using the vacuum packaging machine, regulation gear from a turn in the process of the value of the Angle error does not exceed a certain limit, it is the movement precision of gear.
2, work stability accuracy
stretch film packaging machine gear precision.
Stretch film packaging machine gear when rotating, should try to reduce the shock, vibration and noise.
But due to the tooth shape and base pitch error, make gear in a turn, the big and small Angle error, and the positive and negative variations for many times, so that cause instantaneous transmission ratio is not stable, work is not smooth.
Work stability precision of the gear, gear is stipulated in a turn, the change of the instantaneous transmission ratio within a certain fan figure.
3, contact accuracy
stretch film packaging machine gear precision.
Gear in the process of transmission, the gear surface will directly under load, if the contact is not uniform, causing local stress is too large, wheel would be premature.
In order to prolong the service life of gear, hope the tooth surface contact area of bedding face evenly, usually use ratio of the gear tooth surface contact point.
4, the gear pair clearance
stretch film packaging machine gear precision.
Stress of gear tooth deformation, heat expansion, installation and manufacture are not accurate, there will be stuck phenomenon.
In order to prevent mutual jammed, storage of lubricant, friction conditions change gear tooth surface, tooth meshing pair, each other in non-working tooth surface along the tooth profile normal direction certain clearance shall be maintained.
The gear pair clearance by selecting the appropriate thickness to ensure that the limit deviation and the distance limit messenger.
all in all, in order to make the gear drive has the good performance, the need for the movement of the gear accuracy, precision work stability, precision and the gear pair clearance has certain requirements.
But for those four sorts of requirements, also can't see on average, the specific working conditions is different, each different aspects of the play, which, on the one hand is the main, such as high genetic dynamic gear, stability is the main work, strict instrument and transmission ratio on the mechanical, motion accuracy requirement is main, low-speed gears, according to the hit precision is the main.
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