Lathe of electrical micro-machine rotor is not had small procrastinate board tool carrier design

30mm, its walk along the behavioral order of the knife to be: The author designs this kinds of lathe in factory of Shenzhen of American Duracraft company when, be aimed at the particular case of this factory, mix to tool carrier on the foundation that analysing characteristic of turning of this kinds of lathe small procrastinate board undertook transforming. Analysing the discovery when characteristic of this kinds of lathe, to the treatment of a batch of rotor of same size, a rotor has every turning fore-and-aft feed and the movement that retreat a knife. When turning fore-and-aft feed time is longer when small diameter rotor, produce accumulative total time to cannot be ignored to large quantities of quantities. Use this kinds of lathe turning smooth face and cutting hidebound characteristic, cancelled when the design small procrastinate board, there is fore-and-aft feed when turning, to solve the problem letting a knife when retreating a knife, designed to lower his head to allow knife tool carrier, replaced former some small procrastinate board with tool carrier, its structure is shown 1 times like the graph. 1.

Rotor 2.

Lathe tool 3.

Tool carrier 4.

Bedspring 5.

Coil 6.

Electromagnetism tool carrier 7.

Knob of tool carrier fixed position 8.

Procrastinate greatly board 9.

Baseplate 10.

Bearing pin 11.

Rotor bearing pursues sketch map of structure of 1 tool carrier letting a knife is used lower his head to allow knife tool carrier but leave out every time the fore-and-aft feed of turning and the time that retreat a knife, knob of fixed position of adjustable to the rotor of each batches of different diameters tool carrier dimension of 7 affirmatory turning. Every turning a batch of rotor, in the begining a few rotor achieve test-drive after precision asks tool carrier 6 locking, the coil when turning 5 electrify, 3 magnetic force getting report attract tool carrier, with bearing pin 10 swing for the center submit horizontal form, procrastinate greatly board 8 transverse take a knife; When lathe tool 2 shift give rotor the width of 1, coil 5 cut off the power, tool carrier 3 in bedspring the action of 4 falls lower his head to let knife extensive recover from an illness, procrastinate greatly board 8 transverse retreat a knife, return begin the position. Its movement order is: At the back of the dambered surface that rotor used when tool carrier lowers his head to let a knife and lathe tool horn, swing 10 ° left and right sides can come true let a knife; Advocate cutting force and electric magnetism make a couple, make the tool carrier when turning is sucked close more firm. Take out is small procrastinate board after instead allows knife tool carrier, because be mixed without fore-and-aft feed,withdraw knife motion, reduced handling time, decreased to the rotor handling time of 65mm of medium diameter φ 15% . Treatment precision also rises somewhat. Classics test: 65mm of rotor diameter φ , every groups of test specimen 64, in all 3 groups, use treatment of tool carrier letting a knife, mean square of on size error differs σ 1 ＝ 0.

00329; With treatment of former lathe tool carrier, mean square of on size error differs σ 2 ＝ 0.

00347. Both can satisfy requirement of IT7 class precision, and former precision slightly tall reason is main the equivalent stiffness that the fixed position of hydraulic pressure power that the equivalent stiffness that because let the electromagnetism of stiffness together with of bearing pin of knife tool carrier absorb resultant force,arises uses 10 times penetration of a cutting tool to fight force than former lathe produces is tall, and latter is below large active force small procrastinate board easy generation is out of shape. CNC Milling