Boring basic processing methods
1, what is boring stretch of suspended law? What are the characteristics of it?
A: The use of hanging Boring Bar single stretch of the middle-size and non-penetrating to the coaxial hole boring, this process is called the hanging method boring stretch.
Hanging boring stretch of the main features of law are:
(1) stretch as a result of hanging boring Boring Bar used generally short, thick, rigid better choice of cutting speed can be higher than the support Boring Bar, so the production of high efficiency.
(2) Boring Bar on stretching hanging fixture, adjusting the tool of convenience and ease of processing in the observation and measurement, time saving aids.
(3) boring stretch hanging spindle into cutting method used, as with the spindle Boring Bar constantly hanging into the stretch, Arbor system as a result of self-change of deflection are also different in the processing of long hole, the roll forming machine hole easy axis bending. Continuously extended as a result of the spindle, the whole system of rigid holders continue to deteriorate boring role in the cutting force, the system of elastic deformation increases, the impact of precision hole boring, so have a cylindrical hole is processed error.
2, On the use of suspended working platforms to stretch into the characteristics of boring. This boring holes on the processing accuracy has been the impact?
A: The feed table boring stretch when hanging; suspended as a result of stretching the length of the spindle before the cutting is set, the cutting process of self-respect by the Arbor system and the deflection caused by cutting force and elastic deformation remained relatively stable. Holes have been processed and the cylindrical bending of the axis error than hang with the spindle feed small boring stretch. This way affect the hole boring machining accuracy is mainly due to rail bed and the table of the straightness error, and their co-ordination between the accuracy. If the bed rail in the horizontal plane and vertical plane, there are linear error will be generated processing hole axis straightness error and position error of the base surface; if rail with poor accuracy, it will have to be machined hole roundness error.
3, what is boring supporting law? What are the characteristics of it?
A: The support is boring boring machine used in aircraft Tailstock sleeve bearing within the boring bar for boring a way of cutting.
Bearing boring method is characterized by:
(1) boring stretch and hanging method, a substantial boost to the boring bar of the rigidity.
(2) for the processing of coaxial holes. Can be used with a wide range of high precision boring knife, processing and high precision, to ensure processing quality.
(3) and adjustment of clamping BORING more trouble and time-consuming and difficult to observe the process, the test boring, no hanging surveying operation stretched boring method as intuitive and convenient.
4, On the use of boring bar into the law to support the characteristics of boring. This boring holes on the processing accuracy has been the impact?
A: The boring bar into the law to support boring boring, boring bar extending the length of the feed with the spindle and the ever-changing, but the boring bar and the main axis between the two for the same distance. And table feed and boring way of support compared to two for the shorter distance between points. Therefore, by the cutting forces roll forming machine generated by deflection of the boring bar table feed than the boring way of supporting small, so a good anti-vibration, can be used wide-knife process. However, because of the boring bar feed, so BORING in position between the bearing changes, which resulted in self-boring bar will affect the bending of the workpiece hole axis straightness error.