63results about How to "Guaranteed production cycle" patented technology

The invention relates to a secondary ejecting mechanism of an automobile door panel injection mold. The secondary ejecting mechanism of the automobile door panel injection mold comprises a mold seat board, wherein the mold seat board is provided with a movable mold through a mold leg, an ejector pin board and an ejector pin ventral board which are driven to do vertical motion by an oil cylinder are arranged between the mold seat board and the movable mold, the ejector pin board is fixedly provided with a top rod, mesh pull rods are fixedly arranged on the ejector pin board and the ejector pin ventral board, the movable mold is provided with a concave pit, the concave pit is internally provided with a mesh ejector pin board, the mesh ejector pin board is fixedly provided with a mesh ejector pin which is used for ejecting a mesh opening of an automobile door panel, a mesh ejecting spring which is used for supplying power for ejecting the mesh ejector pin board is arranged in the pit, the upper ends of the mesh pull rods are fixedly arranged on the mesh ejector pin board, the lower ends of the mesh pull rods are provided with rod caps in bulged ring shapes, the ejector pin ventral board is provided with a guide hole which is in size match with the rod cap, and the rod cap is positioned in the guide hole and can slide vertically. The secondary ejecting mechanism of the automobile door panel injection mold, disclosed by the invention, has the advantage that the breaking (bending) probability of the ejector pin is reduced to a large extent.

The invention relates to a buckling-restrained brace member, in particular to a combined steel pipe-encased concrete type buckling-restrained brace member. The invention solves the problems that the processing cost of the in-line brace inner core in the existing buckling-restrained brace member is high, the reliable low-cycle fatigue performance cannot be ensured, the cast-in-situ construction and the vibrating construction of mortar or concrete are apt to cause special soft material plates to be displaced and non-binder material plates to be locally damaged, and the production cycle is long.Technical scheme one: the in-line brace inner core and two first backing plates are clamped between two rectangular steel pipes filled with mortar or concrete blocks, each first backing plate is respectively and fixedly connected with outer walls which face to the two rectangular steel pipes and each backing plate is fixedly connected with an external restraining member; and technical scheme two:the in-line brace inner core and third backing plates are clamped between two rectangular steel pipes filled with mortar or concrete blocks, and the third backing plates are connected with pairs of bolt seats through a plurality of bolts. The combined steel pipe-encased concrete type buckling-restrained brace member can be used in the side force resisting component in the field of building structure engineering.

The invention relates to a welding method for shape and position deformation control of the underframe floor of an EMU, comprising the following steps: selecting a place with a gap between the end beam plate and the floor profile to perform spot welding, and the end beam plate includes a fixing seat and several connecting beams , each connecting beam is provided with a plurality of reinforcement holes; the bottom welding of the fixed seat is welded horizontally by the split symmetrical welding method, and the connecting position of the connecting beam and the floor profile is welded by the cross symmetrical jump welding method, and the connecting beam is welded on the connecting beam. Reserve the unwelded area at the end of the hole, and then perform supplementary welding on the unwelded area; weld multiple reinforced holes, the welding sequence is cross-diagonal jump welding, and the welding direction in the hole is reversed. The invention improves product quality, ensures that the floor of the underframe of the EMU is flat and not deformed after welding; improves production efficiency, prevents size adjustment after welding, and effectively guarantees the production cycle; reduces labor intensity, and prevents repeated cutting after welding , so that the entire welding procedure becomes simplified and easy to operate.

The invention discloses a device for machining an inner hole of a bent pipe of a nuclear power main pipeline. The device comprises a cambered boring rod, a cutter rotating power source, a large gear ring strip and a small gear, wherein the cutter rotating power source is connected with a flange port formed at one end of the cambered boring rod; the large gear ring strip is fixedly arranged on theouter side of the cambered boring rod; the small gear is engaged with the large gear ring strip so as to drive feeding of the boring rod; and the radius of the central axis of the cambered boring rodis equal to the radius of the central axis of the inner hole of the bent pipe of the main pipeline. During machining, the cambered boring rod and the bent pipe of the main pipeline are positioned on the same horizontal plane, and moving centers of the cambered boring rod and the bent pipe are positioned on the same circle center, so that the cambered boring rod and the bent pipe can move along the same trace to realize main cutting motion similar to the trace; therefore, the desired inner hole of the bent pipe of the main pipeline can be machined. The invention also discloses a method for machining the inner hole of the bent pipe of the nuclear power main pipeline.

The invention relates to a micro-deformation control process for a split axle box body. The micro-deformation control process specifically comprises the following steps: carrying out blank casting onan upper box body and a lower box body separately; carrying out rough machining on single elements; carrying out heat treatment on the single elements; carrying out finish machining on the single elements; carrying out box combination, machining a bearing hole, a node hole and the two end surfaces of the axle box body and a node, machining a labyrinth groove in the inner surface of the bearing hole as well as a shock absorber seat, a cowcatcher installation seat, a top surface, a bottom surface and a cylinder which surround the axle box body by taking the machined bearing hole, node hole and end surfaces as location reference; carrying out semi-finish milling and boring for the bearing hole; carrying out box splitting, and then placing the box bodies under a room-temperature condition andcarrying out aging treatment separately; carrying out fine trimming on a box splitting surface; carrying out box combination and carrying out semi-finish milling and boring for the bearing hole; carrying out box splitting, and then carrying out polishing; and carrying out box combination again, detecting the axle box body subjected to the box combination, and then carrying out sand blasting and painting. According to the micro-deformation control process disclosed by the invention, the micro-deformation of the axle box body is prevented and controlled simultaneously in many aspects through reasonable optimization for a process flow and optimization for process parameters, so that the product pass percent is increased, the production period is ensured, and the production cost is lowered.

The invention provides a split type rubber roller capable of being replaced quickly, belongs to the technical field of textile equipment, and aims to solve the technical problems that a machine needs to be stopped when working rubber rollers are switched, the production cycle cannot be guaranteed, and the operation of replacing worn rubber rollers is inconvenient. The split type rubber roller comprises a bearing seat, an indexing support, a pedal, a clutch box and an indexing motor; an outer roller body is arranged between the bearing seat and the indexing support; a contact roller is arranged on the outer roller body; a driven gear is fixed to the contact roller; a controller is fixed to the indexing support; a grooved wheel indexing mechanism is arranged on the indexing support; a sensor and a second hydraulic cylinder are arranged on the pedal; an input motor, an output shaft and a first hydraulic cylinder are arranged on the clutch box; a driving gear is fixed to the output shaft; and a clutch mechanism is arranged in the clutch box. The small contact rollers replace an original large roller body to work, roller replacement without shutdown can be achieved, the production cycle and the production efficiency are guaranteed, the worn rubber roller can be rapidly detached and replaced by detaching mounting bases at the two ends of a roller groove, and disassembly and assembly are convenient.

The invention discloses a method for processing a trepanning of a crankshaft crank red trepanning hole for a large-scale ship, wherein the diameter of the red trepanning hole is more than 708mm, a trepanning drill is fixedly arranged on a chuck disc of a main shaft box of a machine tool, and the trepanning of the crank red trepanning hole is processed by means of machinery processing; and a corresponding angle between cutting edges of knife blades on the two end points of the trepanning drill is 165 degrees, the trepanning drill is guided and supported by using three supports, and cutting scraps are directly discharged by means of external scrap discharge. The invention also discloses the trepanning drill used in the method and a method for taking materials after the trepanning. The invention ensures the processing quality and the manufacture cycle of workpieces with energy-saving and environmental protection.

The invention discloses a machining method and a boring and milling tool for turbocharger gas inlet shells. According to the machining method and the boring and milling tool, by designing and using the special boring and milling tool, parts are machined through an ordinary boring machine instead of a five-axis machining center, the production cycle of the turbocharger gas inlet shells is shortened, and the machining cost of the turbocharger gas inlet shells is reduced. The method includes the following procedures, namely, the first procedure of line drawing, the second procedure of first flange plate boring and the third procedure of second flange plate boring. The boring and milling tool comprises a base. A positioning mandrel and an installation plate are arranged on the base in an erected manner. The upper end of the positioning mandrel is matched with a positioning hole formed in the base. The lower end of the positioning mandrel is used for being embedded in a machining tool work table. The installation plate is located on one side of the positioning mandrel. Positioning pins are installed on the installation plate and are used for positioning first flange plates of the turbocharger gas inlet shells.

The measured size of a processing reference surface of the circular corners of the weir crest of an overflow brick is compared with a design size, so the polarization direction during processing of the four circular corners of the weir crest of the overflow brick can be ensured, uncontrollable phenomena in the processing of the circular corners of the weir crest are removed, production periods areensured and quality of the finished products of the overflow brick is ensured.