70results about How to "Shorten the trial production cycle" patented technology

The invention discloses a method for applying CAD (computer-aided design) drawing to a precision finger-type milling cutter for involute gears. The method is characterized in that a cutter CAD system is constructed on the basis of a UG (Unigraphics) platform, various three-dimensional parameters of the finger-type milling cutter are inputted to generate a three-dimensional entity model, a three-dimensional parameterization technology is analyzed and summarized, and purposes of automatically generating a three-dimensional model of the precision finger-type milling cutter for the involute gears and two-dimensional CAD graphs and automatically labeling dimensions are achieved by the aid of the parameterization technology and a UG secondary development technology. The method has the advantages that problems that computation is troublesome and errors are easy to make in a precision finger-type milling cutter designing procedure are solved, and purposes of improving the design precision, shortening a product design cycle, reducing the design cost and avoiding design errors are achieved. The method is widely applied to CAD parameterization design for finger-type milling cutters for machining gears according to a form copying principle and a non-instantaneous-pole envelope principle.

The invention relates to a flexible bending tube die of a ball-and-socket joint structure which is characterized in that one end a core head body is connected with a pull rod of a numerical control tube bending machine, the front end of an inner ball joint is inserted into the other end of the core head body and fixed connected with the same, the rear end of the inner ball joint is provided with a spherical socket, the front end of the inner outer ball joint is provided with a spherical protrusion, the rear end of the inner outer ball joint is provided with a spherical socket, an annular outer ball joint is sleeved on the outer layer of the inner outer ball joint, the front end of an outer ball is provided with a spherical protrusion, the rear end of the outer ball is solid, two inner outer ball joints are connected end to end, the spherical protrusion at the front end of the first inner outer ball joint at the front end is embedded into and movably connected with the spherical socket at the rear end of the inner ball joint, the outer ball is embedded into and movably connected with the rear end of the last inner outer ball joint. By the movable bending tube of the ball-and-socket joint structure and flexible movable structure, the requirements for thin-walled stainless steel tube trial-manufacture can be met by common tube bending machines, a large amount of equipment cost is saved, and trial manufacture cycle is shortened.