3results about How to "Achieve precision machining" patented technology

The invention discloses a segmented series spring shock absorber and machining equipment, and belongs to the technical field of vehicle shock absorption. The shock absorber comprises a gas spring, a heavy-load spring, a light-load spring and a retainer, wherein the retainer is arranged between the light-load spring and the heavy-load spring; a load energy release device and a temperature adaptation assembly are further arranged on the retainer, and the load energy release device comprises a bearing disc, an annular storage cavity and an energy release pad and is used for absorbing beat vibration energy; the temperature adaptation assembly comprises a ventilation hole and a friction pad, heat generated by the friction pad can be transmitted to the energy release pad, and low-temperature compensation and high-temperature heat dissipation are achieved. The invention further provides milling equipment for machining the clamping-in groove and the wedge-shaped groove, precise machining of the wedge-shaped groove is achieved through the eccentric milling principle, and the pressure relieving assembly ensures that a cutter stably stretches out through buffering of non-Newtonian fluid. The problems of response accuracy, retainer stability, beating vibration durability and temperature adaptability of the shock absorber under different load working conditions are effectively solved.

This invention provides an ultra-precision turning apparatus for oblique off-axis ellipsoidal mirrors, comprising a base, an ellipsoidal mirror, and a cutting tool. The base has a first side and a second side arranged opposite to each other. The first side is used to connect to the spindle of a turning machine tool. The ellipsoidal mirror has an ellipsoidal surface to be machined, and the ellipsoidal mirror is detachably connected to the second side so that the rotation center axis of the ellipsoidal mirror coincides with the rotation center axis of the spindle. The cutting tool includes a tool holder and a cutting head connected to the end of the tool holder. The ultra-precision turning apparatus provided by this invention can be installed in conjunction with a turning machine tool to achieve ultra-precision turning of oblique off-axis ellipsoidal mirrors. Compared with the traditional polishing method for preparing oblique off-axis ellipsoidal mirrors, it is more efficient, lower in cost, and also has the advantages of high machining accuracy, simple installation, and avoidance of machining interference.

The application discloses a kind of mechanical seal dynamic pressure groove laser processing process parameter inversion and groove depth processing precision control method, specifically includes the following steps: first, the design control target of dynamic pressure groove is set, i.e.target groove depth and groove depth relative error;Second, based on dynamic pressure groove laser processing groove depth calculation model, process parameter inversion program is prepared;Finally, using process parameter inversion program is processed once or multiple times, so that groove depth meets the design control target requirement of dynamic pressure groove.This application can realize the accurate control of mechanical seal dynamic pressure groove groove depth, can effectively improve the processing precision of dynamic pressure groove groove depth, with efficient precision, simple operation and the like.