1. The micro boring bar is designed in a structure of two poles, so as to be easy for on-line error inspection and compensation.

2. A new type of carbide-cored boring bar is analyzed using the nonlinear layered composite material FEA approach offered by ANSYS.

3. The boring bar establishes in deviation driver one side, applies the brake in the vehicle to use the foot to check, further explained the pursue comfortableness , but non-mobile design style.

4. The dynamic characteristic of a precision adjustable boring bar is analyzed by using experimental modal analysis method.

5. The study of dynamics is done for boring bar, and the methods are summarized to alleviate vibration chatter.

5. try its best to collect and make good sentences.

6. A new magnetostriction material boring bar is presented for precision finishing of different types of odd-shaped pinholes, and structural optimization and test validation are carried out.

7. Based on theoretical analysis of stepped bending vibration boring bars, the frequency equation of a stepped bending vibration boring bar with circular and square sections is established.

8. The supporting length of the boring bar is prolonged and the hardness of the boring bar is greatly increased by the guide sleeve.

9. For improving the boring stability a boring bar with intelligence capacity has been designed, which contains an electrorheological(ER) fluid and is with on-line controllable dynamics.

10. When a back and forth handle on the boring bar is rotated, the boring bar falls back and the pin can quickly dismount the knife.

11. The designs of boring process, boring mould, boring bar, boring tool and precision boring head are analyzed and researched, and the five problems above are solved.

12. The result of simulation demonstrates that the design can enhance the dynamic stiffness of the boring bar, reduce the quantity of radial vibration and improve the surface processing quality.

13. In order to have a better damping effect, the design parameters of the built-in damping boring bar should be optimized in the design stage.

14. The only major difference is that boring jigs are normally fitted with a pilot bushing or bearing to support the outer end of the boring bar during the machining operation.

15. The technical equipment adopted the construction that the spindle drove boring sleeve, boring bar and cutter bar in order to finish machining spherical surface. The improved result was good.

16. To propose a varying stiffness theory for on-line chatter control and design an intelligent boring bar which can regulate and control stiffness on line using an electrorheological fluid.

17. This paper represents a new description about vibration coupling principle based on study of damping vibration of cutting side boring bar.

18. Based on the classical theory of elasticity, an expression is derived for the radial stiffness of annular rubber in the dynamical vibration absorption boring bar.

19. The results show it is important to use high. damping materials for improving dynamic performance of precision boring bar, especially of precision adjustable boring bar.