Bearing the principle of precision guide rail automatically posts together

On the geometric accuracy, precision motion and positioning precision are high precision guide (such as CNC machine tools and measuring machines guide), the design should follow the following principles:
Error compensation principle, meet the following three requirements in order to guide the system to achieve mutual error compensation:
(1) rail link between the flexibility must be set to the middle, such as rolling plastic tape (film) or the fluid film.
(2) guide the preload between sufficient to compensate for exposure errors.
(3) guide the manufacturing error should be less than the middle of elastomers (element) of the deformation.
Accuracy of the principle of mutual non-interference in the manufacture and use of the precision independently of each other when the guide was easy to get high accuracy. Such as: rectangular side rail of the linear and linear rails independently of each other at the time of manufacture; Ping-V rail combined rail lateral size of the change will not affect the accuracy of track work.
In places do not have the equipment, the operator can be hand-held rod or spanner tools such as conflict with the machine nearest to bearing shell parts, tools will be ears listening ashamed of coming from the instruments bearing running noise, of course, can also be modified using the medical stethoscope .
Fag bearing the normal operation of sound should be uniform, smooth voice is not harsh, not the normal functioning of fag bearings have a wide range of intermittent noise, shock or harsh sound. First of all to get used to bearing the normal operation of sound, and then be able to grasp the judge does not sound normal bearing operation, then the accumulated through experience, to analyze further what kind of sound does not correspond to what the normal bearing anomalies . Bearing many types of abnormal sounds, difficult to explain in words, mainly by accumulation of experience.
Static and dynamic friction coefficient should be close to the principles of design to guide rail contact surface, Vice dynamic and static friction coefficient as close as possible to obtain high repeat positioning accuracy and low speed riding, rolling guide, inserts installed plastic sheet or plastic film with quote general sliding rail, low coefficient of friction and static and dynamic friction coefficient close.
Guideway automatically posts the principle of cooperation to make guide precision, must Guideway features combined with automatic posts. Horizontal movement guide rail can rely on to quote combined weight of components; other rail or wheel spring force must be additional pressure to posts together.
All contact with the principle of a fixed length of rail fixed guideway must ensure that the maximum travel of the two limit positions, and full access to the fixed rail (do not exceed the fixed rail), to ensure that the process of rail in contact with the Deputy has full contact with .
Deformation and thermal deformation compensation principles guide and supporting documents by force or temperature changes, the design of rail and its supporting documents, seeks to become the required shape after deformation. If the beam rail gantry machine, made in its convex to compensate for the spindle box (or knife) deformation caused by the weight.

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