13results about How to "Accurate center" patented technology

The utility model discloses a cutter chain type feeding device, which comprises a chain type conveying line, a plurality of conveying plates, a plurality of feeding plates, a plurality of feeding plates, a plurality of feeding plates, a plurality of feeding plates, a plurality of feeding plates, a plurality of feeding plates and a plurality of feeding plates, and is characterized in that the driving assembly is suitable for driving the conveying plates to move along a closed-loop path; and the multiple positioning assemblies are arranged on the conveying plate at equal intervals in the conveying direction of the chain type conveying line, each positioning assembly comprises two positioning blocks, the two positioning blocks are oppositely arranged on the conveying plate, each positioning block is provided with a guide groove and a positioning groove, and the guide grooves communicate with the positioning grooves and guide the cutters to enter the positioning grooves. The chain type conveying line is matched with the positioning assemblies arranged at equal intervals, continuous and stable conveying of the cutters is achieved, and the automation level and the operation efficiency of the production line are improved; moreover, due to the design of the guide groove of the positioning block, the cutter is effectively guided to enter the positioning groove smoothly, accurate centering and stable fixing of the cutter are ensured, and machining errors caused by inaccurate positioning are reduced.

This invention relates to a grinding repair method for a central drive spline shaft, belonging to the field of repair technology. The invention proposes a grinding repair method for a central drive spline shaft. This method involves micro-grinding of the splines on a drive shaft with out-of-tolerance tooth direction but whose spline tooth thickness meets process requirements and has a significant remaining lifespan. This restores the technical condition of the spline teeth on the central drive spline shaft to its original process level, extends the lifespan guarantee capability of the drive shaft, and achieves cost reduction and efficiency improvement.

The invention discloses an efficient continuous open-width washing machine, comprising a frame, a cloth feeding device, a centering device, a plurality of washing pools, a heating pre-shrinking zone, a cloth outlet frame and other units. The washing pool comprises a cloth lifting shaft, a cloth guiding shaft and a spraying device with a nozzle and a micro-bubble-rich water flow generator, and stores washing liquid. The cloth lifting shaft is located above the washing pool, and the cloth guiding shaft is located inside the washing pool. The nozzle group of the spraying device is located behind the cloth lifting shaft and faces the cloth, and the pre-shrinking zone is heated. The machine also comprises a vacuum moisture absorption and cooling device. The present invention utilizes the micro-bubble-rich water flow generated by the micro-bubble-rich water flow generator to wash the cloth, and utilizes the characteristics of micro-bubble expansion and bursting to efficiently remove impurities deep in the cloth, thereby improving the washing efficiency, efficiently saving energy and water, and using a vacuum moisture absorption and cooling pipe to quickly cool and dry the cloth, and recycle high-temperature water, thereby improving the utilization efficiency of water resources and reducing heat energy consumption.

The invention provides an RO (reverse osmosis) device assembly mounting and positioning method and system based on a total station, and relates to the field of water purification. The RO device assembly mounting and positioning system based on the total station comprises a high-precision automatic tracking total station, a special optical reflection target and adapter, an integrated control terminal, a communication unit and power supply and auxiliary equipment. By ensuring natural centering of all components, residual stress generated in a pipeline, a flange and a container due to forced correction is avoided, the long-term operation risk caused by stress corrosion and fatigue cracking is fundamentally eliminated, accurate flange centering and parallelism control are achieved, it is ensured that a gasket is evenly stressed, and the service life of the gasket is prolonged. The probability of leakage in operation is greatly reduced, the intrinsic safety of the system is improved, the system converts complex space judgment into simple locating operation according to pictures, ordinary workers can complete high-precision operation under guidance, and the pressure of shortage of professional skill talents is relieved.

This invention provides a device and method for aligning the crankshaft's crank axis relative to the major axis. The bottom of the alignment block has alignment screws and alignment springs connected to both sides of a clearance groove. The alignment block is fixed to the side of the alignment rod near the bottom and facing the V-block, such that when the crankshaft is placed on the V-block and the side of the alignment rod near the alignment block is tangent to the crankshaft crank, the clearance groove of the alignment block perfectly covers the crankshaft balance block. The alignment screws and alignment springs are located on the parting surfaces on both sides of the balance block. The diameter of the reference shaft is the same as the diameter of the crankshaft crank, and the axis of the reference shaft is aligned relative to the major axis. The alignment module pre-fixes the position where the alignment rod is tangent to the crankshaft crank, and then determines the downward stroke of the alignment rod. The alignment of the crank axis relative to the major axis is achieved through the alignment rod and the alignment block, resulting in accurate and efficient alignment.

This utility model relates to the field of fabric testing technology, and in particular to a rapid tear resistance testing mechanism for rolled polyester fabric. The mechanism includes a frame on which a testing device is mounted for testing the tear resistance of the fabric. The testing device includes: a main component comprising a base plate fixed inside the frame, four circumferentially arranged grooves inside the base plate, a front slide frame slidably mounted inside the grooves, a cylindrical seat fixed in the center of the base plate, a rotating plate rotatably mounted on the lower outer wall of the cylindrical seat, connecting rods pivotally connected to the four corners of the bottom of the rotating plate, and the other end of each connecting rod pivotally connected to the bottom of the front slide frame; a driving component on the base plate for driving the rotating plate to rotate; and a clamping component mounted on the front slide frame for clamping and fixing the fabric. Synchronous radial movement achieves adaptive centering and uniform clamping of the fabric, and lever principle amplifies the clamping force, effectively preventing fabric slippage during testing and ensuring accurate and reliable test results.

This invention belongs to the field of coaxiality detection technology, specifically relating to a device and method for measuring the coaxiality of CMG shaft end units. It can simultaneously detect the displacement changes of the shaft end units to obtain the coaxiality of the shaft systems at both ends. By constructing a spatial measurement benchmark with a high-precision negative-pressure air-bearing one-dimensional platform as its core, this invention fundamentally ensures the straightness accuracy of the measurement system itself, making sub-micron level coaxiality detection possible. By employing a scheme of mounting sensors at both ends of the rotor shaft system and combining them with equal-angle trigger sampling, it successfully solves the problem that traditional cylindricity gauges cannot be directly applied due to the special structure of the CMG rotor. This achieves synchronous, accurate, and non-contact measurement of the radial runout of the shaft end units at both ends of a long shaft system, and the measurement results truly reflect the form and position errors of the shaft system in its assembled state.

The present disclosure relates to a concentricity determination method, device, storage medium and electronic equipment, and relates to the computer technical field. The method comprises: detecting a target image corresponding to a first target object by using an edge detection algorithm of eight direction gradient synthesis to obtain gradient amplitudes of a plurality of first pixel points; determining, from the plurality of gradient amplitudes, a plurality of second pixel points corresponding to a plurality of gradient amplitudes greater than a dynamic threshold; performing morphological erosion processing on the plurality of second pixel points to obtain a plurality of target pixel points; fitting the plurality of target pixel points by using a least square method to obtain a center of the first target object; and determining a concentricity between the first target object and a second target object according to a distance between the centers of the first target object and the second target object. The concentricity determination method provided by the present disclosure can make the fitted edge of the first target object more accurate and the concentricity more accurate.

This invention proposes an ultrasonic casting system for wear-resistant zinc-aluminum alloy castings, belonging to the field of alloy casting equipment. It solves the problems of unstable molten metal flow rate, difficulty in temperature control, coarse grains caused by modifier failure, and mold splashing during casting caused by manual pouring in the production of wear-resistant zinc-aluminum alloy castings. The system includes a tundish, an ultrasonic treatment system, a flow-guiding mold, and a mold positioning mechanism. The flow-guiding mold is located at the bottom of the tundish, and a heating device is located on the outside of the tundish. A push rod is located on the top cover, with its bottom inserted into the flow-guiding mold. The ultrasonic treatment system includes a transducer, an ultrasonic generator, an amplitude transformer, and a guide rod. The guide rod penetrates the top cover, with its bottom extending below the molten metal surface. The top of the guide rod is connected to the amplitude transformer, which is connected to the transducer, and the transducer is connected to the ultrasonic generator. A mold positioning mechanism is located below the flow-guiding mold. It is mainly used for casting zinc-aluminum alloy castings.

The utility model provides a machining automatic feeding device which comprises a machine frame and two movable mechanisms arranged on the machine frame, the two movable mechanisms are oppositely arranged and movably connected to a plurality of movable rods arranged on the bottom side of the machine frame, and a driving part used for driving the two movable mechanisms to do relative motion is fixedly connected to the bottom side of the machine frame. When workpieces are fed, the driving part is started, the driving part drives the two mounting plates and the guide frames on the mounting plates to do relative motion, the mounting plates and the guide frames are adjusted to the distance matched with the workpieces, the workpieces are placed on the conveying belt through the grabbing mechanism, and when the workpieces are conveyed on the conveying belt, the workpieces are conveyed on the conveying belt. The arc-shaped guide frame can guide the workpieces to be stably conveyed along the preset path, so that the workpieces gradually get close to the middle shaft in the conveying process and are conveyed to the conveying piece on the mounting plate, and finally the workpieces are conveyed to the conveying belt at the other end to be fed, and according to the structure, the positions of the workpieces do not need to be manually adjusted and re-corrected; and the production efficiency is improved.

The utility model relates to the technical field of DTMB parts, in particular to an injection molding mold for key parts of a DTMB system, which comprises a fixed mold, a movable mold and a DTMB frequency converter shell mold core embedded in a mold cavity of the movable mold. A plurality of air springs are arranged on the side face, facing the movable mold, of the double-rod I-shaped supporting buffer plate, the free end of each air spring is connected with the interior of the fixed mold, so that the double-rod I-shaped supporting buffer plate elastically abuts against the inner wall of the mounting machine table in a buffering mode, and mounting notch grooves are formed in the two ends of the side face, facing the movable mold, of the fixed mold correspondingly; a hydraulic damper is slidably mounted in each mounting notch groove, the damping end of each hydraulic damper is symmetrically connected with two buffering and force unloading auxiliary wheels, and each buffering and force unloading auxiliary wheel is used for buffering, damping and force unloading in the mounting notch grooves through the hydraulic dampers when the movable mold is closed.

The utility model discloses a plug-in anti-falling flange, which relates to the technical field of flanges and comprises a first flange plate, a second flange plate and a plug-in anti-falling flange, the second flange plate is arranged at the bottom end of the first flange plate; the inserting assembly is arranged in the middle of the first flange plate and the second flange plate and used for achieving inserting connection of the first flange plate and the second flange plate; the fixing assembly penetrates through the first flange plate and the second flange plate and is used for achieving fixed connection of the first flange plate and the second flange plate. According to the utility model, through the arrangement of the plug-in assembly, preliminary butt joint between the flange plates can be realized, so that not only is the installation efficiency improved, but also accurate centering is facilitated, and misalignment of sealing surfaces caused by installation deviation is avoided, thereby reducing the risk of medium leakage.