1061results about How to "Improve verticality" patented technology

A plastic bottle with a base centered on a vertical axis, a continuous standing ring to support the bottle, a side wall formed unitarily with the base extending from the base upward to an upper side wall end, and a neck connected to the side wall upper end, the neck including a finish adapted to receive a cap to close an opening into the bottle interior. The bottle base standing ring is defined in vertical cross-section by a continuous curve bounded on a radial inside by an interior region that can include a plurality of concave domed wedge-shaped sections interspaced with buttress sections having substantially planar inclined outer portions. The bottle base standing ring has a diameter less than 80% of the maximum side wall width and is bounded on a radial outside by a conic section portion centered on the vertical axis having an apex angle of less than 1600 to improve the perpendicularity of the bottle.

In a method for manufacturing a compound semiconductor device, a principal surface of a SiC wafer, on which a compound semiconductor device is located, is bonded to a support substrate with an adhesive having a softening point higher than 200° C. A via hole is formed dry etching, including supplying a fluorine-containing etching gas to a rear side of the SiC wafer. Thereafter, the support substrate and the adhesive are removed. Preferably, the adhesive is formed by reacting one material coating the principal surface of the SiC wafer, and another material coating the support substrate.

The invention relates to a pipe cutter, which comprises: frame (60), work table (61), aerated or hydraulic device, connecting tube valve, cutting motor (1) axially mounted at one end of work table (61), and the cutter driven by said motor (1). Wherein, the work table (61) and frame (60) are mounted with a device for moving cutting motor (1) and cutter up and down, and a device for rotating the pipe (12) around its axle; the end of work table (61) far from the motor (1) has automatic pipe feeder; the work table (61) between cutter and pipe feeder is mounted with pipe guide support and pipe automatic clamper; one side of motor (1) has pipe (12) automatic sizing device under. The invention has high vertical degree between cutting surface and pipe axle, with high efficiency and low cost.

The invention provides a fisheye image correcting method for image stitching. The method corrects two fisheye images partially overlapped with each other through a computer, and finds out a splicing angle of stitching caused by pitch angles during shooting between the two fisheye images by adopting an unique correction principle and utilizing matched pixels in the two fisheye images so as to obtain the pitching angle formed during the shooting of the two fisheye images through backstepping; and the method also avoids adverse impacts, such as inclination, ghosting, and the like, of errors of the pitch angles formed during the shooting on the panorama stitching of the fisheye images through pitching conversion mapping treatment, and has the advantages of better robustness and high accuracy in computation.

The invention discloses a super-hydrophobic silicon micron-nano composite structure and a preparation method thereof, which belong to the nano material preparation field. The structure is a micron-nano composite structure composed of square column array micron structures on the surface of silicon and columnar nano structures on each micron structure. The preparation method is relatively low is cost, can realize the controllable preparation of the periodic array silicon micron-nano composite structure, and is compatible with micro-electronic and micro-electro-mechanical technologies, thereby providing an effective means for the deep research on the influence of geometrical morphology on wettability; and the preparation method omits surface modification, and the super-hydrophobic property can be obtained by simply changing the structural topography of the surface, thereby laying the foundation for the application of the surface of the super-hydrophobic silicon micron-nano composite structure in the field of micro-electro-mechanical systems and the like.

The invention discloses a plastering device, which is applicable to the field of construction machinery. The plastering device comprises a chassis, a screeding plate capable of screeding a slurry, and a slurry conveying part capable of conveying the slurry to an accommodating cavity, wherein the accommodating cavity is arranged in the screeding plate; the slurry conveying part is arranged on the chassis; a slurry outlet communicated with the accommodating cavity is reserved on the front face of the screeding plate; the screeding plate is moveably arranged on the chassis; the screeding plate is driven by a driving device; and a traveling part capable of driving the chassis to travel is arranged on the chassis. By arranging the screeding plate driven by the driving device and capable of screeding the slurry onto a wall, the plastering device has the advantages of high automation degree, high working performance, low requirements on skill of workers, low labour intensity and high working performance of workers, good planeness and perpendicularity of wall plastering, and high plastering quality.

The invention relates to production control of a polycrystalline silicon ingot casting furnace and aims at providing a heating control system and a method based on a top separated control polycrystalline silicon ingot casting furnace. A side heater in the system is connected with a side power supply, a top heater is connected with a top power supply, the side power supply and the top power supplyare connected to a power distribution control module through conducting wires, in addition, the heat control system is provided with a central control module, a heating control module, a crystal growing height calculation module, a temperature control sensor, a lower water temperature flow rate sensor, a side water temperature flow rate sensor, a side heater temperature sensor and a top heater temperature sensor, and the temperature control sensor, the lower water temperature flow rate sensor, the side water temperature flow rate sensor, the side heater temperature sensor and the top heater temperature sensor are arranged on the top of a furnace chamber. Compared with the prior art, the system and the method have the advantages that the crystal growing speed is accelerated, the crystal growing time is shortened, the crystal growing speed and the crystal growing height can be precisely calculated, the crystal growing process is precisely controlled, the total power of the heater power is reduced, in addition, the energy consumption is obviously reduced because the crystal growing time is shortened, the crystal growing interface is more smooth, the crystal grain verticality is better, in addition, the crystal favorably grows, and the crystal quality is improved.

The invention discloses a super-high-rise building verticality measuring and controlling method based on a GPS (Global Positioning System). A high-accuracy GPS static measurement mode is adopted, two base stations are placed on a base control network point on the ground, one mobile station is placed on any position of a construction floor surface, a first floor measurement control point is obtained through timing observation, a second floor measurement control point is obtained by using the same method, one of the two control points is used as a station measuring point and the other is used as a rear view point for checking a measuring point, and a floor axis control point is set out after no errors exist. By adopting the invention, accumulated errors in the traditional method can be eliminated, and the verticality of the building structure is improved. In addition, because each measurement is started from a base control network on the ground, no accumulated errors exist, and the maximum error source of the super-high-rise floor verticality control is eliminated.

In a fluid dynamic bearing apparatus, an oil buffer is defined between a thrust gap and a pumping gap. The oil buffer has an axial dimension greater than that of the thrust gap, and/or has a radial dimension greater than that of the pumping gap. An air bubble generated in the thrust gap due to cavitation, for example, when a fluid dynamic bearing apparatus experiences a vibration can be dissolved in lubricating oil provided within the oil buffer. This prevents leakage of the lubricating oil due to the air bubble residing in the fluid dynamic bearing apparatus.

The single -shaft micro tensile test piece to test the film dynamic performance includes the U shpe supporting platform, movable platform, the snake supporting spring, centring marker, displacement marker. The snake supporting spring is connected with the U shape supporting platform and movable platform; the U shape supporting platform and movable platform are connected with two suspended ends of the film sample; the centring marker is on the top of the movable platform; the displacement marker is pasted to the tail to movable platform and near to the film sample. Compared to the present test piece, the process is available, it has good repeatability and high yield; also it has avoided the test error generated by the supporting girder deformation in tension process. The test piece of invention is proper for the film micro dynamic performance test of single metal, alloy and compound material.

The invention discloses a preparation method of a laser diode packaging case, which comprises the following steps of: cleaning before sintering, and sintering, fusing and sealing a diode seat; fixing the form of a product; electroplating, and pretreating a diode cap for sintering; sintering, fusing and sealing a diode cap, and plating the bell-shaped round metal case; and assembling the diode cap and the diode seat to form the laser diode packaging case, and the like. Because a bottom plate is processed by adopting a powder metallurgy injection forming mode, the accuracy and the positioning of a metal boss on the bottom plate can be strictly controlled by adopting the casting insert polishing technology in powder metallurgy, and mass production can be realized without die trimming. The positioning processing accuracy, the verticality and the glossiness of the centre line of the metal boss on the bottom plate from the metal bottom plate are high, and the requirements of the product can be met completely.

Rolling bearing, for a tensioning roller, comprising an inner race, an outer race mounted so as to rotate about the inner race and at least one row of rolling elements placed between the inner race and outer race, the said inner race comprising an axial portion extending axially beyond the outer race.

The rolling bearing comprises an insert fitted into an open-ended bore made in the axial portion of the inner race.

The invention discloses an automatic pin machine of a PCB board. The automatic pin machine of the PCB board comprises a frame, a power system, a main shaft transmission system, a wire rod clamping relaxing module, a cutting needle module, a plate putting warehouse, a numerical control division plate system, a numerical control shift plate positioning system and an automatic material returning system. The automatic pin machine of the PCB board possesses a completely automatic production function which comprises that: the automatic division plate, the automatic shift plate, the automatic positioning and automatic plate returning can be achieved; a main shaft transmission mechanism drives the machine to automatically clamp a wire, send the wire and be cut off after automatic insertion. A plurality of pins are simultaneously inserted at once. A speed is fast, an output is high, cost is low and pin efficiency is high. In addition, the pins have a same length during a pin process. Verticality of the pins is good and pin quality is high, which provides a solid foundation for a subsequent automatic production technology. The wire rod used by the pin machine is a whole roll of steel wire which is automatically cut into the pins through the machine so that secondary processing cost of processing the wire rod into the pins can be saved. The raw material cost can be substantially reduced.

The invention discloses an assembly welding method for producing large diameter extremely thick steel pipes through a rotary walking rail and a device thereof. The assembly welding method for producing the large diameter extremely thick steel pipes through the rotary walking rail comprises paving the rail; arranging a waling flat vehicle on the rail; arranging an operational platform which can be extended to the upper end on the exteriors of the steel pipes to be welded on the rail edge; and arranging an automatic welding machine which is controlled through a computer on the operational platform. The device for producing the large diameter extremely thick steel pipes through the rotary walking rail comprises the computer, the rail, the automatic welding machine, a walking platform, an automatic welding vehicle and the operational platform. The assembly welding method for producing the large diameter extremely thick steel pipes through the rotary walking rail has the advantages of enabling welding of the large diameter extremely thick steel pipes in construction fields to be convenient and good in quality and being feasible and safe. The device for producing the large diameter extremely thick steel pipes through the rotary walking rail has the advantages of being simple and practical in structure, high in construction speed, time and labor saving, low in construction cost, good in construction quality and good in energy conservation and environmental protection effect.

The invention discloses a buckle piece lamination device of a conical stator punching sheet. The buckle piece lamination device comprises a stator punching sheet lamination device, a leveling device and a buckle piece lamination device, wherein an expansion sleeve, lower external cone tools and a stator punching sheet fixing seat are arranged on the stator punching sheet lamination device and are in clearance fit with one another, a trapezoidal plate is fixedly arranged on the stator punching sheet fixing seat and is arranged vertically, inclined surfaces of two sides of the trapezoidal plate can be inserted into two corresponding inner grooves of each stator punching sheet, the leveling device comprises a flattening tool, an upper internal cone tool sleeves the flattening tool, the flattening tool and the upper internal cone tool can downwards press on the stator punching sheet lamination device under the push of a leveling air cylinder, the buckle piece lamination device comprises a roller capable of transversely moving and a roller air cylinder, the roller transversely mover under the driving of the roller air cylinder, and an upper end and a lower end of a buckle piece are respectively bent and are attached onto an upper surface and a lower surface of a conical stator so that the stator punching sheets forming the conical stator can be fixed together. The buckle piece lamination device has the advantages of good perpendicularity in each stator punching sheet, stack compactness, stator inner groove orderliness and high appearance cylindricality.

The invention discloses an internally-arranged angle sensor all-in-one ultrasonic motor servo control system and relates to servo control over ultrasonic motors. The internally-arranged angle sensor all-in-one ultrasonic motor servo control system comprises a command module, a compensation module, a digital processing module, a drive panel and an all-in-one actuating mechanism. The command module sends out commands to the compensation module, and the compensation module converts the commands into frequency control signals and transmits the frequency control signals to the digital processing module; the digital processing module processes the frequency control signals into square signals and transmits the square signals to the drive panel, the drive panel amplifies the square signals and then inputs the square signals to the all-in-one actuating mechanism, the all-in-one actuating mechanism is a hollow ultrasonic motor with an internally-arranged angle sensor, the angle sensor feeds back speed and position information, the speed and position information reaches the compensation module after passing through the drive panel and the digital processing module, through comparison, compensation and conversion, newly-generated frequency control signals are transmitted to the drive panel, and therefore closed-loop control is achieved. The internally-arranged angle sensor all-in-one ultrasonic motor servo control system has high reliability, high precision and good environmental suitability, and is especially suitable for being used as shaft end servo control systems of platforms with multi-degrees of freedom.