35results about How to "Reduce processing waste" patented technology

The invention discloses a reducing rotary forging method for an internal thread copper pipe, in particular a method for machining the internal thread copper pipe by reducing spinning and the extrusion of rotating roller cores. In the machining method, the rotating roller cores with threads are adopted while the reducing spinning is performed, and the inner wall of the cooper pipe is subjected extrusion molding under the action of friction force to ensure that continuous and uniform threads exist on the inner surfaces of copper pipes, and the inner surfaces have the distinct threads, controlled lines and few residues.

The invention discloses a split crank shaft structure of a reciprocating compressor, which is applied to the field of reciprocating compressors. The split crank shaft structure comprises a main shaft part and a crank pin which are separated from each other, wherein one end of the main shaft part is in butt joint with the crank pin in an eccentric manner; and a balance block is arranged on the opposite side of the crank pin. According to the split crank shaft structure, a crank shaft adopts a split structure. When the structure is put into use, two ends of a connecting rod are respectively connected with a piston in a cylinder seat and the crank pin of the crank shaft, and then the crank pin is fixedly connected with the main shaft part. By the structure, the structural integrity of the cylinder seat and the connecting rod is kept, waste of processing of the cylinder seat, the connecting rod and the crank shaft is reduced, the processing cost is saved, and the production rate is improved.

The invention provides an integrally-woven crucible prefabricated body which is a net-shaped body formed by weaving one or more carbon fiber ropes, and the crucible prefabricated body is formed by densely weaving an opening in the upper end and a compact weaving at the lower end. The crucible is formed by weaving one carbon fiber rope or a plurality of carbon fiber ropes, so that a prefabricated body is unnecessary and working hours are reduced. According to the crucible, straight carbon fiber ropes are adopted for weaving, so that a blank body does not need to be manufactured, the shape plasticity is high, limitation of the blank body is avoided, flexible design and batch production can be achieved, the delivery period is shortened, and material machining waste is little.

The invention discloses a textile coating with a radiation refrigeration function and a preparation method of the textile coating, and the textile coating is prepared by coating paint with the radiation refrigeration function. Comprising 20.5%-39.85% of water-based acrylic resin, 30.04%-47.15% of reflective pigment filler, 0.23%-0.43% of a dispersing agent, 0.09%-0.15% of a wetting agent, 0.25%-0.52% of a defoaming agent, 0.27%-0.56% of a thickening agent, 0.37%-0.72% of a coalescing agent and 26.99%-37.99% of water, the elongation at break of the water-based acrylic resin is 400%-850%, the reflective pigment filler comprises first filler and second filler, and the second filler comprises the first filler and the second filler. The particle size of the second filler is larger than that of the first filler, the mass ratio of the first filler to the second filler is 6.5: 1-1: 3, the textile coating adopts a one-step coating method to form a functional layer on the surface of the textile material, the reflectivity of the functional layer in visible light and infrared light is larger than or equal to 85%, and the emissivity of the functional layer in the wave band of 7-14 microns is larger than or equal to 85%. The textile coating disclosed by the invention has good radiation refrigeration function and cooling effect, and also has the advantages of simple preparation method and process, soft surface, folding resistance and the like.

A method, application and device for obtaining fibres from at least one plant stem or from plant bast is disclosed. The at least one plant stem is treated with at least one high-speed liquid jet or high-speed gas jet. At the start of treatment with the high-speed liquid jet or the high speed gas jet the at least one plant stem has a moisture content of at least 25% and/or vegetable glues, in particular the pectin and hemicelluloses, of the plant stem are in a swollen state.

The invention provides an integral spiral woven crucible prefabricated body which is a net-shaped body formed by spirally weaving one or more carbon fiber ropes, and a crucible which is woven in a net-shaped hollowed-out mode with the upper end open and the lower end closed. The crucible is formed by weaving one carbon fiber rope or a plurality of carbon fiber ropes, needling of a prefabricated body is not needed, and working hours are saved; straight carbon fiber ropes are adopted for weaving, a blank body does not need to be manufactured, the shape plasticity is high, limitation of the blankbody is avoided, flexible design and batch production can be achieved, the delivery period is shortened, and material machining waste is little.

The invention provides a production method of a coated crucible. The crucible is an annular hollow net-shaped body formed by braiding one carbon fiber rope or belt; and a production process of the crucible comprises the following step: carrying out a plasma thermal spraying or solid powder solution pre-impregnation and re-sintering step. A crucible top and a crucible bottom of the crucible are prepared by braiding one carbon fiber rope or the plurality of carbon fiber ropes; a needle-punched pre-formed body is not needed and an adhesive is not needed; a processing step of too-long-time vapor phase deposition is not needed, so the working time is saved; the disadvantages that the pre-formed body crucible has poor elasticity and poor fragility are overcome; the thermal deformation stress ofa quartz crucible can be effectively absorbed; meanwhile, the weight of the crucible top of the crucible is greatly reduced and the content of hot melts and impurities of the crucible is reduced; andthe material cost and the application cost are greatly reduced.

The invention provides a coated crucible with an edge, and the crucible includes a crucible body and a bottom with an edge. The crucible and the bottom of the crucible are braided by a carbon fiber rope or multiple carbon fiber ropes, and do not need acupuncture prefabricated bodies, no adhesives, and long-time vapor deposition processing steps, saving man-hours; It eliminates the disadvantages of poor elasticity and high brittleness of the prefabricated crucible, and can effectively absorb the thermal deformation stress of the quartz crucible; at the same time, it greatly reduces the weight of the crucible, reduces the thermal melting and impurity content of the crucible, and greatly reduces the material cost and use cost.

The invention provides a novel outer row compressed type multi-row axial plunger pump/motor, and relates to the field of axial plunger pump/motors of hydraulic machinery. The novel outer row compressed type multi-row axial plunger pump/motor comprises a shell, a cylinder body, a transmission shaft, a thrust plate, an inner swash plate and an outer swash plate; a front gland is connected with a front end cover through hexagonal screws; the front end cover is connected with the shell through hexagonal screws; the shell is connected with a rear pump cover through screws; the transmission shaft drives the cylinder body to rotate through splines, a baffle groove of the cylinder body is internally provided with a baffle, and the outer side of the cylinder body is sleeved with an outer compressedball sleeve; the outer ball surface of the outer compressed ball sleeve is hinged to the inner ball surface of an outer compressed plate, and outer row spring seats and outer row springs are installed in spring holes of the outer compressed ball sleeve; the side, close to the front end cover, of the transmission shaft is provided with the inner swash plate and the outer swash plate; and the innerswash plate and the outer swash plate are connected through swash plate positioning pins. According to the novel outer row compressed type multi-row axial plunger pump/motor, rotating bodies are of afull symmetrical structure, spring force is distributed uniformly, action baffles of the outer row springs are inserted in the cylinder body, cylinder body prepared materials are reduced, the cost isreduced, and the structure is simple and practical.

The invention provides a draft tube. The draft tube is applied to a heat field and comprises an upper ring part, a cylinder part, N middle ring hoops, a lower ring part and at least one cylinder rib plate, wherein N is an integer larger than or equal to 0; the cylinder part is made of a flexible and bendable material. The draft tube is light in weight, high in strength, non-stripping and high in safety. A blank is not needed to be made, batch production is realized, and accordingly, the delivery period is shortened, and few materials are wasted in processing.

The invention provides a key online inclined hole measuring method through a numerical-control machine tool, and machining and measuring are conducted on the same equipment. By the adoption of the method, secondary swivel-clamp errors can be effectively avoided, a machine tool measuring head is added and installed in a tool magazine system of a numerical-control system, in the workpiece machining process, a measurement macroprogram is edited in advance, measurement of a machined workpiece can be conducted at any time according to technological requirements, and the effect that machining and measuring are conducted at the same time is achieved indeed. Discarded products can be found as early as possible, labor cost is reduced, productivity is liberated, and machining waste is reduced.

The invention provides a novel pneumatic hydraulic synchronous clamp device which comprises clamping blocks, sliding blocks, a clamp base, triangle levers, a horizontal pressing plate, a pin shaft, apressure cylinder, a piston, a horizontal dustproof plate and a fixing shaft sleeve. A containing cavity is formed in the clamp base. A piston capable of moving up and down along the shaft in a reciprocating manner is coaxially installed in the containing cavity of the clamp base. The lower portion of the piston is in transmission connection with the pressure cylinder installed below the clamp base. The triangle levers are connected to the left side and the right side of the piston correspondingly. The sliding blocks capable of moving left and right in a reciprocating manner are connected above the triangle levers. One clamping block is fixed to each sliding block. The horizontal pressing plate connected with the clamp base is further arranged between the sliding blocks and the clamping blocks. According to the lever principle, the pressure cylinder is utilized for moving up and down to pull the levers to control the left sliding block and the right sliding block to move in the same direction or the opposite directions, and it is ensured that the center is located automatically for clamping a workpiece.

The invention provides a novel crucible, which is applied in a manufacturing process of monocrystalline silicon or polysilicon. The novel crucible comprises an upper ring part, a middle ring part and a lower bowl mounting part, which are connected in sequence, wherein the upper ring part is an annular hollow body and is formed in such a manner that a plurality of first arc-shaped combination pieces are arranged and stacked in parallel to the circumferential direction of the bottom part and are assembled through pins vertical to the bottom parts, the side face of the upper ring part is provided with a gap parallel to the axial direction, and a connecting mechanism is arranged on the gap; the middle ring part is an annular hollow body and is formed in such a manner that a plurality of second arc-shaped combination pieces are arranged and stacked in parallel to the circumferential direction of the bottom part and are assembled through pins vertical to the bottom parts, the side face of the middle ring part is provided with a gap parallel to the axial direction, and a connecting mechanism is arranged on the gap; the lower bowl mounting part is an arc-shaped bowl body and comprises a plurality of third combination pieces and a bowl bottom, and the third combination pieces are vertically connected with the bowl bottom to form a bowl wall. The crucible provided by the invention is high in cost performance, strong in corrosion resistance, capable of effectively resisting against erosion of silicon vapor and long in service life.

The invention discloses a sewing machine providing convenience for needle threading. The sewing machine comprises a supporting table, a machine body is installed at the top of the supporting table, and a fixing column is arranged at the top of one side of the machine body; a machine head and a sewing needle are arranged at the bottom of one side of the machine body in sequence, sliding rails, first sliding blocks, second sliding blocks, a first fixing plate and a second fixing plate are arranged at the top of the supporting table in sequence, and a guide needle is arranged at one side of the first fixing plate; a groove opening is formed in one end of the guide needle, a laser emitter is arranged at one side of the first fixing plate, a reflection mirror is installed on one side wall of the second fixing plate, and a flexible ruler is installed at one side of the top of the supporting table; a ruler strip and a fixing clamp are connected to one side of the flexible ruler in sequence, and a ruler is installed at the top of the supporting table. According to the sewing machine, the sewing needle can be conveniently used for needle threading, the time required by needle threading is shortened, the working efficiency is improved, the length of sewed cloth can be measured, the accurate length of the cloth is obtained accordingly, processing waste is reduced, and the cloth cost is lowered.

The invention discloses a reinforcing steel bar cutting machine comprising a machine seat, a support, a detachable machine cover, a center shaft, a cutter, a handle, a drive motor, four supporting legs and a moving mechanism. The support is installed at the back end of the machine seat. The detachable machine cover is installed on the support. The center shaft is arranged at the center of the detachable machine cover. The cutter is installed inside the detachable machine cover. The handle is installed on the left side of the detachable machine cover. The drive motor is installed at the lower end of the handle and connected with the center shaft. The four supporting legs are installed at the bottom end of the machine seat. The moving mechanism is installed at the lower ends of the supporting legs. The machine seat is longitudinally provided with a cutting groove. The machine seat is provided with multiple round through holes arranged in a reversed-trapezoid shape, wherein the round through holes transversely penetrate through the machine seat. The cutting groove is matched with the cutter. The cutter comprises a round-disk-shaped cutter body and a grinding wheel, wherein the round-disk-shaped cutter body is made of alloy steel, the grinding wheel is arranged on the edge of the cutter body, and the grinding wheel and the cutter body are connected into a whole through sintering. The outer circumference of the cutter body is provided with convex portions and connection grooves. The grinding wheel is provided with concave-convex structures matched with the convex portions and the connection grooves.

The invention relates to a subway three-dimensional trackless measurement platform construction method which comprises the following specific steps: generating a three-dimensional shield track model according to a shield model constructed by a shield construction model and a track model constructed by a track modeling model; an evacuation platform installation position table is input into the generated three-dimensional shield track model, and a corresponding evacuation platform calculation model is generated; a contact network installation mileage and related technical parameters are input in the process of generating the three-dimensional shield track model, and a contact network calculation model is obtained; inputting the installation position and the technical parameter value of the looped network bracket in the generation of the three-dimensional shield track model to obtain a calculation model with the looped network bracket; and linking the established model to a data center to complete construction of the subway three-dimensional trackless measurement platform. By constructing the subway three-dimensional trackless measuring platform, ordering of an evacuation platform, a contact network and a ring network support can be completed before on-track communication, so that the construction period is shortened, and machining waste is reduced.