94results about How to "Product quality consistency is good" patented technology

A titanium alloy equal-thickness thin-wall special-shaped annular piece rolling and expanding composite forming method comprises the processes of workblank design, upsetting and punching, thin-wall annular piece rolling, rigid mold bulging, finish machining and titanium alloy thin-wall special-shaped annular piece. The whole flow mainly depends on material plastic forming; oxide skin externally wrapping the annular piece is only removed by cutting and removing working allowance in the final process, so that the performance of the annular piece is ensured, and the cost is saved. When the special-shaped annular piece is finally formed, rigid mold bulging is adopted, and the final geometrical shape and dimension of the annular piece are ensured by a mold, so that the precision is very high; and the consistence of dimension and precision of a part can be ensured when multiple processing is continuously carried out.

The invention discloses a method for producing a brush steam seal ring, which mainly comprises the following steps: preparing a brush body slot; preparing a brush body; preparing a mould; preparing a baffle plate; preparing wires; arranging the wires; welding; unloading the mould; grinding and rounding; riveting; finishing; cleaning and assembling and the like, and is a good and reasonable method which is summarized from production practice and is suitable for mass production. The method can produce the qualified brush steam seal ring having the advantages of good sealing effect, good safety performance, high mechanical strength, good consistency of product quality, no wire drop and the like.

The invention relates to a solid rocket engine combustion chamber shell adiabatic layer forming method, and belongs to the field of adiabatic layer forming technologies. The solid rocket engine combustion chamber shell adiabatic layer forming method comprises the steps that according to the design structure of an engine combustion chamber shell, an adiabatic layer prefabricated part which is not completely vulcanized is prepared, and the outer diameter of the adiabatic layer prefabricated part which is not completely vulcanized is less than the inner diameter of the engine combustion chamber shell; the adiabatic layer prefabricated part which is not completely vulcanized is bonded to the inner wall of the engine combustion chamber shell through a heat vulcanization adhesive; and hot pressing vulcanization is conducted, and thus the engine combustion chamber shell with an adiabatic layer is obtained. Through internal support tension of the adiabatic layer prefabricated part and a good isolation gap between the adiabatic layer prefabricated part and the inner wall of the combustion chamber shell, the problems of sheet pasting warp and unsmooth exhaust of sheet rubber are effectivelysolved, and bonding reliability of the interface of the adiabatic layer and the shell is improved.

The invention discloses a hot-riveting device for fixing a sensor circuit board. The hot-riveting device comprises a base, a driving cylinder, a hot mold, a hot-riveting rod and a sensor positioning base, wherein the sensor positioning base is arranged on the base; the driving cylinder is arranged on the base and positioned above the sensor positioning base; the hot mold is arranged on the piston rod of the driving cylinder; a heater is arranged in the hot mold; the hot-riveting rod is arranged at the lower part of the hot mold. Due to the adoption of the hot-riveting device, tops of all plastic fixing columns of one sensor can be hot-riveted at one time, and the sensor can be automatically hot-riveted after being positioned, so that the production efficiency is improved, the cost can be lowered, the production quality consistence is good, and the product quality can be easily controlled.

The invention discloses a positioning fixture for improving quality consistency of subminiature precision connector products. The positioning fixture comprises a fixture lining and a pin, wherein the lining is in interference fit with the pin; during press fitting, positioning is performed by virtue of a limiting block at the front end of the pin; the fixture plays limiting and correcting roles, so that the quality consistency of the products is ensured and the qualified rate of the products is greatly improved.

The invention discloses a bell-type electric elevator furnace, which comprises a heating furnace body (7), wherein a heating body (8) is arranged in the heating furnace body (7). The bell-type electric elevator furnace is characterized in that: a door frame (1) is arranged above the heating furnace body (7); the door frame is provided with a chain elevator mechanism; guide mechanisms are arranged on the two sides of the heating furnace body (7); and thus, an electric furnace elevating system of which the upper part is elevated is formed. The bell-type electric elevator furnace of the invention adopts the chain elevator mechanism to elevate and descend the whole electric furnace through two chains, realizes the precise control over the elevation together with the guide mechanisms, and is provided with a travel switch and an auxiliary positioning device to ensure that the electric furnace is descended to a designated position and further improve the safety coefficient. The bell-type electric elevator furnace of the invention is small in size, simple in structure and low in cost and can be used in trial sites such as colleagues and universities, research institutions and laboratories.

The invention discloses a preparation method of a fleecy fabric anti-layering foam sandwich composite material board. The method uses a special fiber fabric for gluing, mold pasting and pavement to form a skin material; a foaming material is injected in a glue injecting cavity formed by combining convex and concave molds; and through coating of structural glue on the edges of the molds, sealing of a glue injecting port and a glue outlet, mold closing, heating and like, a foam and fleece embedded anti-layering sandwich composite material board is formed. The forming process is simple; the standard production is liable; the product quality consistence is excellent; through molded surface control of the molds, different special-shaped curved surface structure sandwich composite boards can be prepared, and can be directly applied to structural support parts, insulation, thermal insulation, sound absorbing and insulating boards and the like; the structure is stable; the deformation is low; and the mechanical performance can be designed.

The invention discloses a cutting tool for drilling and chamfering a steel rail and a machining technology thereof. The cutting tool comprises a cutting tool body, wherein the cutting tool body comprises a first cutting edge, a second cutting edge and a third cutting edge; the first cutting edge is used for drilling the steel rail; the second cutting edge and the third cutting edge are used for chamfering the steel rail; the first cutting edge is positioned at the outermost end of the cutting tool body; the second cutting edge and the third cutting edge are arranged oppositely. The machining technology comprises the following steps of installing the cutting tool on a drilling machine, and positioning and fixing the to-be-machined steel rail; feeding the cutting tool, and drilling the steel rail through the first cutting edge; continuously feeding the cutting tool, and chamfering one side of the steel rail through the third cutting edge; retracting the cutting tool, and chamfering the other side of the steel rail along a rounding path through the second cutting edge; retracting the cutting tool out of the steel rail. According to the cutting tool for drilling and chamfering the steel rail and the machining technology thereof, the machining processes, such as the drilling and two-face chamfering, on the steel rail can be realized, machined chamfers are uniform, the phenomenon of stress concentration is effectively eliminated, the workload of workers is relieved, and the machining efficiency is improved.

The invention aims to disclose automatic tool disassembling equipment for a carrier. The automatic tool disassembling equipment comprises a transplanting pickup mechanism, a carrier overturning mechanism, a blocking mechanism, a jacking mechanism and a carrier conveying line mechanism. Compared with the prior art, the manner that manual disassembling is needed during tool disassembling in the pastis replaced, so that the carrier precision and efficiency are greatly improved and the produced product is high in quality consistency; and the automatic tool disassembling equipment is simple in structure and verypractical and realizes the purpose of the automatic tool disassembling equipment.

The invention provides a hemocoagulase extracted from bothrops atrox and also provides a preparation method of the hemocoagulase. The method comprises the following steps of: pretreating the bothropsatrox; sequentially passing the diethylaminoethyl cross-linked dextran gel A-25 ion exchange chromatography, benzamidine agarose gel 4-FF (HS) affinity chromatography, and cross-linked dextran gel G-75 gel filtration chromatography; and obtaining hemocoagulase. The invention also provides the application of the bothrops atrox hemocoagulase. in the preparation of a medicament for treating bleedingdisorder. Compared with the prior art, the preparation process steps are less, the period is short, and the exposure risk of the process environment is reduced; the product yield is high, the processhas strong ability to remove impurities, the yield of the product can be obtained more than 35% and the purity is over 98%; the process stability is high and the product quality is good, and the process is beneficial to clinical medication safety.

The invention discloses a locking connecting mechanism for a bus groove assembly production line. A chassis is divided into an assembly section and a conveying section; the assembly section uses a first limiting support column and a second limiting support column for limiting support of upper and lower cover plates and side plates of bus groove products; a pressing rod at the top end of the firstlimiting support column tightly presses the side plates of the bus groove products through a pressing foot from top to bottom; a first cylinder drives a Taiwan fixture to tightly press the cover plates of the bus groove products from the side surfaces; limiting support blocks limit the side plates, the cover plates and phase line modules of the bus groove products through limiting side plates andlimiting end plates; and an intelligent mechanical arm, a first cylinder and a second cylinder on an intelligent control cabinet interlocking control equipment base clamp and lock the side plates andthe cover plates of the bus groove products to fixedly rivet as overall bus groove products through rivets. The process is simple; the assembly operation is convenient; the assembly precision of the bus groove products is high; and the product quality consistency is excellent.

The invention discloses an electric tool for pipefitting chamfering. The problems that according to existing manual burr grinding and chamfer finishing, production efficiency is low, and the product quality is poor are solved. The tool comprises a rack, a drive motor, at least one rotating shaft and at least one cutter bit and is characterized in that the rotating shafts are rotatably supported on the top of the rack through supporting parts, the cutter bits are connected to the ends of the rotating shafts in a non-rotation manner through cutter bit bases, the drive motor is fixed to the bottom of the rack, and an output shaft of the drive motor drives the rotating shafts to rotate through a transmission part. The electric tool is simple in structure and convenient to operate; a pipefitting required to be chamfered stretches into the tool bits and makes contact with the tool bits, burr removing and chamfering can be carried out, the product quality consistency is good, the strength of workers is low, and the production efficiency is high.

The invention relates to the field of production of car accessories, and aims to provide a production technology and equipment of a car dimmer switch. The production technology and equipment of the car dimmer switch comprise a conveying belt module, a PCBA board feeding machine, a PCBA board dividing module, a terminal inserting module, a terminal welding module, an oiling module, a rotary wheel and reed feeding module, a spring assembly module, a steel ball and rotary disc assembly module, a clamping jaw module and a final assembly module, wherein the PCBA board feeding machine, the PCBA board dividing module, the terminal inserting module, the terminal welding module, the oiling module, the rotary wheel and reed feeding module, the spring assembly module, the steel ball and rotary disc assembly module, the clamping jaw module and the final assembly module are sequentially arranged along the conveying belt module. The production technology and equipment have the beneficial effects that various automatic production devices are adopted in the production technology; and previous manual production is replaced; production efficiency is high, production cost is low, and the product quality consistency is good; only little control and few management employees are needed, the work intensity of the employees is relieved, the mobility of the employees is low, and management cost is low; and the equipment is low in occupied area, and space is saved.