Sgriwiau pêl yw'r cydrannau trawsyrru a ddefnyddir amlaf mewn offer peiriant a pheiriannau manwl. Ei brif swyddogaeth yw trosi mudiant cylchdro yn fudiant llinellol, neu drosi torque yn rym ailadroddus echelinol. Ar yr un pryd, mae ganddo hefyd nodweddion cywirdeb uchel, gwrthdroadwyedd ac effeithlonrwydd uchel.
Eccentricity: Yn cyfeirio at wyriad y ganolfan rhwng yr ochr sefydlog a'r ochr gefnogol.
Inclination: In addition to eccentricity, the installation error caused by the parallel error (up, down, left, and right) or vertical error of the screw nut mounting part between the screw shaft and the guide (LM guide, etc.).
Installation accuracy reference: Refer to the table for the reference value of the installation accuracy of the ball screw. The data in the table is for reference only. Please minimize installation errors. The installation accuracy of the motor support and coupling affects the walking and positioning accuracy of the workbench, so attention should be paid to the ball screw.
Unpacking: Be careful not to hit the nut and end thread. When disassembling the nut, you can manually rotate the nut from one end of the effective thread to the other end. Check whether the resistance is consistent and whether there is obvious bending. Be careful not to disengage the nut screw from the effective thread. Wipe off the surface anti-rust oil and apply lubricating oil.
Maintenance: When the linear speed is less than or equal to 30m/min, grease can be used for lubrication. According to the working conditions, grease should be injected every 300 to 600 working hours. It is recommended that oil lubrication be 30-60m/munud, a gellir ystyried iro niwl olew gorfodol 60-100m/munud. Argymhellir archebu sgriw gwag a mabwysiadu oeri ac iro gorfodol. Cadwch yr amgylchedd gwaith yn lân a pheidiwch â gadael i lwch ac amhureddau eraill fynd i mewn i'r rasffordd neu'r cnau. Os nad yw'r sefyllfa'n dda, ystyriwch ychwanegu gorchudd amddiffynnol i'r sgriwiau.
Ball screws are usually used where precise positioning is required. The ball screw has high mechanical efficiency, low transmission torque and almost zero axial clearance, making it an important device in tool positioning and aileron drive applications. However, the resistance and heat generated by continuous operation may cause large friction and positioning errors. Increasing the design coefficient of the ball screw friction will also increase the torque, which in turn affects the positioning accuracy. When the ball is pressed between the ball screw nut and the screw shaft, the wedge effect is a potential source of friction. When rotating in the forward direction, the ball is usually pressed on the nut; on the contrary, the ball is squeezed on the screw shaft. Since the sliding friction coefficient is much larger than the rolling friction coefficient ({{0}}.1-0.3 when there is no movement, 0.001-0.003 when rolling), the wedge effect greatly increases the torque.
Ball screw drive has the following advantages:
①Effeithlonrwydd trawsyrru uchel. Yn gyffredinol, mae effeithlonrwydd trosglwyddo trawsyrru sgriw bêl yn 20.92-10 y cant, ac effeithlonrwydd trosglwyddo trosglwyddiad sgriw llithro cyffredin yw 20.20-0.40.
②Cywirdeb trosglwyddo uchel, symudiad sefydlog a dim ffenomen cropian. Yn y bôn, ffrithiant treigl yw'r gyriant sgriw bêl, gydag ymwrthedd ffrithiant bach, ac nid oes gan y gwrthiant ffrithiant bron ddim i'w wneud â chyflymder y symudiad.
③Rhedeg mewn gêr gwrthdro heb segura. Ar ôl i'r sgriw bêl a'r cnau gael eu tynhau ymlaen llaw, gellir dileu'r cliriad echelinol. Yn y modd hwn, nid oes parth marw i'r cyfeiriad arall, ac mae cywirdeb ac anhyblygedd y trosglwyddiad echelinol yn cael eu gwella.
④Mae'n gildroadwy. Oherwydd bod colled ffrithiant y sgriw bêl yn fach, gellir ei drawsnewid o gynnig cylchdro i gynnig llinellol, a gellir ei drawsnewid hefyd o gynnig llinellol i gynnig cylchdro. Gellir defnyddio'r sgriw plwm a'r cnau fel gyriant neu ddilynwr.
⑤Bywyd gwasanaeth hir. Oherwydd y golled ffrithiant bach o ffrithiant treigl, mae bywyd y gwasanaeth yn hir.
As a precise and labor-saving transmission mechanism, the ball screw is widely used in precision machine tools and CNC machine tools due to the above advantages.
Why not give us a linear challenge?
Cysylltwch Nawr
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