55results about How to "Avoid the risk of deformation" patented technology

The invention relates to an automobile storage battery tray, which comprises a tray body, and is characterized in that a groove for fixing a first storage battery is arranged in the tray body, a storage battery limiting bump used for fixing a second storage battery is arranged along the periphery of the upper bottom surface in the tray body, and the upper bottom surface is flush with the port plane of the groove, and the tray body is formed by injection molding of PP+LGF40 material.

A method to manufacture a valve using metal injection moulding is disclosed. The valve housing (2) comprises a welding cap (14) for welding the upper part (5) of the valve to the valve housing (2). The welding cap (14) is placed so the upper part (5) can be welded to the housing (2) without damaging the inner cavity (10) of the housing. There is a gap between the welding cap (14) and the inner liner (15) so the heat from the welding do not damage the inner liner (15) allowing the inner parts of the valve to move freely.

The invention discloses a silicon nitride ceramic part and a processing method thereof. The silicon nitride ceramic part comprises a first cylinder, and two ends of the first cylinder are respectively provided with a first end face and a second end face; a first fixing seat is arranged in the first cylinder body, and the first fixing seat is connected with the first end face in a penetrating manner; a second fixing base is arranged on the upper surface of the second end face and connected with the second end face in a penetrating mode. The preparation method of the silicon nitride ceramic part comprises the following steps: granulating, carrying out cold isostatic pressing molding to obtain a primary green body, carrying out finish machining to obtain a second green body, pre-sintering to obtain a third green body, and finally sintering to obtain the silicon nitride ceramic part. The silicon nitride ceramic piece is uniform in internal density distribution, high in strength, low in density, large in size, easy to process and high in finished product percent of pass.

A nylon chain tensioning arm and nylon chain guide having diamond-like carbon coatings are provided. The diamond-like carbon coating is formed on the substrate by methods including physical vapor deposition, for example, by sputtering or chemical vapor deposition of coating systems composed of various combinations of amorphous carbon. A preferred method for applying the diamond-like carbon coating to the nylon substrate is a hybrid process of plasma-based ion implantation and deposition. The chain tensioning arm or guide may be formed from any number of plastics appropriate to the purpose, although a synthetic polymer, such as the aliphatic polyamide nylon, is the preferred material. The substrate may be a conventional nylon or may be a composite reinforced with glass or carbon fibers. The diamond-like carbon coating may be applied to the nylon substrate by vapor deposition, either directly to the chain-contacting surface or upon a primed surface formed on the substrate prior to deposition.

A preparation method of a wound trapezoidal battery core and the trapezoidal battery core, in the trapezoidal battery core, intervals are formed between the inflection points of the 1-Nth circles of adjacent coils, and the inflection points of the N-M circles of adjacent coils are There is no space between them, and the cross-sectional shape of the cell after hot pressing is trapezoidal. When the battery core of the present invention is wound, from the first turn to the Nth turn, a piece of winding needle is inserted for each turn, so that the winding diameter of each turn is increased by an expansion width relative to the winding diameter of the previous turn, so that There is an interval between the inflection point of the nth coil and the n+1 coil; from the Nth coil to the Mth coil, the remaining coil is wound with a fixed winding diameter; the trapezoidal groove is used The jig heat-presses and shapes the winding core, and after hot-pressing and shaping, a battery core with a trapezoidal cross-sectional shape is obtained. The trapezoidal battery cell obtained by the present invention can maximize the reserved space for the use of equipment, increase the design capacity of the battery cell, and can evenly distribute the stress on the transition slope of the battery cell, and can avoid the problem of deformation of the battery cell after long-term cycling.

The invention discloses an automatic forming machine of a thin-walled short U bent pipe with a welding ring, relates to the technical field of automation equipment, and can continuously accomplish the forming of the thin-walled short U bent pipe and socket welding ring operation, so as to prevent a pipe wall from folds. The automatic forming machine comprises a feeding assembly, a pipe cutting assembly, a pipe bending assembly, a circumference position rotating assembly and a socket welding ring assembly, wherein the feeding assembly at least comprises a clamping mechanism and a No.1 driving mechanism; the No.1 driving mechanism drives the clamping mechanism to perform forward feeding; the pipe cutting assembly at least comprises a cutting tool mechanism and a No.2 driving mechanism; the No.2 driving mechanism drives a cutting tool to act; the pipe bending assembly at least comprises a fixed part, a semicircle die, a movable part and a No.3 driving mechanism; one end of a fixed length pipe is clamped at the fixed part; the other end of the fixed length pipe gets over the semicircle die and then is movably matched with the movable part; the circumference position rotating assembly at least comprises a rotating frame, a pipe clamping mechanism, a No.4 driving mechanism and a discharging cylinder; the socket welding ring assembly at least comprises a welding ring feeding unit, a welding ring guide unit and a socket welding ring unit; the socket welding ring unit pushes the welding ring to a straight pipe section of the thin-walled short U bent pipe.

The invention provides a disengaging device of an on-board generator. The disengaging device of the on-board generator can solve the problem that loading and disengaging between an on-board generatorof an existing functional vehicle and the vehicle are inconvenient. The disengaging device of the on-board generator comprises a generator tray, a traction mechanism, two inner guide rails and two outer guide rails. One side wall of a vehicle compartment is provided with a compartment door capable of being opened. The on-board generator is fixed to the generator tray. The bottom of the generator tray is provided with moving rolling wheels. The two inner guide rails are fixedly installed on a base plate of the vehicle compartment and located on one side of the compartment door. The length direction of each inner guide rail is perpendicular to the side wall, where the compartment door is located, of the vehicle compartment. When the compartment door is opened, the outer guide rail can be detachably connected to the end of the side, facing the compartment door, of each inner guide rail. The outer guide rails extend slantly and downwards to the ground from the inner portion of the vehiclecompartment. The traction mechanism is installed in the vehicle compartment, and the end, with the back towards the compartment door, of the generator tray is connected with the traction mechanism.

An apparatus for recapping tires which includes a frame made up of two associated support structures, a first support structure including a mandrel for support of the tire, which mandrel rotates on a shaft, the mandrel being mounted for translation on the first support structure, and a second support structure to support tools for recapping of the tire, which tools are mounted for translation on the second support structure in a direction approximately perpendicular to the translation of the mandrel, characterized in that the direction of translation of the mandrel is parallel to the rotational shaft of the said mandrel.