38results about How to "Eliminate elastic deformation" patented technology

A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press formed into a gutter-like shape. The first die set used at this step is provided with slant die surfaces for canceling elastic recovering generated at the workpiece when the workpiece is removed from the first die set. At the second step, a row of rack teeth is press-formed on the flat bottom portion of the workpiece formed in the first step. The die set used at the second step is provided with a recess for releasing surplus workpiece material within the die clearance at a stroke end of the pressworking. At the third step, each of a pair of legs of the workpiece is bent in a semi-circular shape so as to be butted to each other. At this time, a mandrel is inserted between the legs of the workpiece.

The invention relates to a lossless surveying and mapping method of an enclosed impeller, comprising the following steps: A. select one impeller vane chamber and perform surveying and mapping to the inlet and the outlet of the impeller vane chamber to obtain an inlet and outlet point cloud curve surface; B. fill high-elasticity liquid moulding agents in the impeller vane chamber, take out after solidification and formation to obtain a vane chamber male mold; C. coat parting agents on the male mold and place the male mold into a liquid pond with the same density, and take out after the liquid in the pond is solidified to obtain a vane chamber female mold in the liquid pond; D. perform surveying and mapping to the vane chamber female mold to obtain a vane chamber point cloud curve surface; E. splice the vane chamber point cloud curve surface and the inlet and outlet point cloud curve surface to form an integral vane chamber curve surface and complete the surveying and mapping to the impeller. In the lossless surveying and mapping method of the enclosed impeller, the male mold formed by filling and solidification of the impeller chamber is placed in the liquid with the same density and then is re-solidified to obtain the female mold, so as to basically eliminate the elastic deformation caused by self-gravity and remarkably improve the surveying and mapping precision; moreover, the operation is simple and the technical difficulty is low.

The invention discloses an overturning beam of a refrigerator, which comprises an overturning beam body which can be pivotally connected to the side wall of any door body. Orientation is a guide seat in a horizontal state; the overturning beam body includes an outer overturning shell and an inner overturning beam main body installed in the outer overturning shell, a top inner wall of the outer overturning shell and an inner overturning beam main body top outer wall form a The accommodating cavity of the guide bracket moving component includes a guide bracket and an elastic member. When the guide bracket is pressed by the guide seat, it moves left / right, and uses the elastic member to eliminate elastic deformation, thereby resetting. The invention avoids the interference of the guide seat on the overturning beam body. When the door body is closed, the overturning beam does not need to be set in a vertical state in advance, and the overturning structure will not be damaged due to operation errors. The structure is simple and the practicability is strong.

The invention discloses a method for eliminating broaching elastic deformation of a high-temperature alloy turbine disk, relating to a method for eliminating broaching elastic deformation of a turbine disk. The invention aims to solve the problems that the broached part is in a cantilever state during finishing broaching, the entire rigidity is relatively low, the elastic deformation of the turbine disk race is increased and the product quality is influenced when the high-temperature alloy turbine disk broaches a race on a vertical numerical control broaching machine. A method I comprises thefollowing steps of: segmented finishing broaching: firstly, dividing the moulding line of the race of the high-temperature alloy turbine disk to be broached into multiple broaching segments, then performing finishing broaching of each broaching segment, implementing rise per tooth by taking every two of the broach teeth as a group to perform anti-rebound broaching, and performing corrective cutting by use of full-tooth form cutter teeth. A method II is different from the method I in that: the segmented finishing broaching is replaced by the broaching of a finishing broach, wherein the pitch of the finishing broach is equal to the thickness of the high-temperature alloy turbine disk to be broached or is 0.9-1 time of the thickness of the high-temperature alloy turbine disk to be broached. The method disclosed by the invention is used for eliminating the elastic deformation produced by the broaching of the high-temperature alloy turbine disk.