8results about How to "Reduce flutter" patented technology

This invention discloses a cutting device and process for crankshaft machining, relating to the technical field of crankshaft machining equipment. It includes a support frame, a feeding trough, a guiding mechanism, a feeding mechanism, a tilting mechanism, a lifting mechanism, a CNC machining mechanism, a top-pressure rotation mechanism, a vibration stabilization mechanism, and a control system. The feeding trough, guiding mechanism, and feeding mechanism achieve automatic workpiece sorting and conveying; the tilting mechanism rotates the workpiece to a horizontal machining position; the lifting mechanism precisely lifts the workpiece to the machining position; the top-pressure rotation mechanism provides rotational power and works with the vibration stabilization mechanism to achieve automatic centering; the vibration stabilization mechanism detects vibration in real time through an accelerometer, and when vibration exceeds limits, drives an auxiliary pin assembly to press the crankshaft balance block, dynamically applying a damping force to counteract chatter. This invention solves the problems of large vibration, low centering accuracy, and insufficient automation in existing devices, significantly improving crankshaft machining accuracy and extending tool life, and is suitable for mass production of high-precision crankshafts.

This utility model relates to the field of drying equipment technology, and in particular to a drying device, comprising a vertical drying area surrounded by drying components. The drying area can simultaneously dry at least one pair of sides of the components to be dried. The drying area has at least one inlet and one outlet for the components to be dried. It also includes a traction mechanism that pulls the components to be dried vertically through the drying area from the inlet and out from the outlet. The drying channel is arranged vertically, with guide rollers and traction rollers positioned at the uppermost and lowermost ends, respectively. The components to be dried pass vertically through the drying area. The drying area dries the components from both sides, completely avoiding physical contact with the guide rollers and traction rollers during the drying process to prevent process defects such as printing transfer, blurring, misalignment, and deformation. This reduces the drift amplitude of the components to be dried, achieving uniform drying on both sides and controlling the migration of the components to be dried.

This utility model discloses a raft-type liftable aerator, relating to the field of aerator technology. The utility model includes plastic floats, elbows, tees, connectors, aeration risers, an aerator body, and steel wire ropes. Two floats are provided, and several elbows are provided, with the two floats connected by the elbows. By using two floats connected by several elbows and then joined by the connector to form a raft, the stability of the aerator body is increased. Four steel wire ropes are used to fix the entire raft, adding two more steel wire ropes than the single float of the original suspended chain aeration system, further reducing the swaying amplitude of the floats on the water surface. By replacing the hose (snake-skin hose) connection between the floats and the aerator body with a connector that connects to the aerator body via the aeration riser (which is a rigid pipe), tangling of the hose (snake-skin hose) is avoided, preventing tangling from affecting the equipment's performance and maintenance.

This invention relates to the field of blade processing equipment technology, and more particularly to a multi-axis rotary polishing machine tool for processing steam turbine blades, comprising: a frame, a grinding wheel base, a mounting shaft, and a clamping seat; the mounting shaft is rotatably connected to the frame; the clamping seat is rotatably connected to the mounting shaft; the grinding wheel base is connected to the frame; the support mechanism can clamp the blade and perform polishing on the blade's fluttering parts, thereby increasing the stiffness of the blade at the clamped part, and thus increasing the blade's natural frequency and eliminating flutter; this invention improves the stiffness of the polished part of the blade edge by clamping the clamping shaft on both sides of the thinner part of the blade edge during polishing, thereby increasing the natural frequency of that part of the blade, so that the natural frequency of the blade at the polished part is offset from the high-frequency vibration frequency generated by the rapid rotation of the grinding wheel base during polishing, thereby reducing the occurrence of flutter during polishing.

The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to an electric power inspection unmanned aerial vehicle-mounted laser obstacle removing device which comprises a machine body, a connecting box is fixedly installed at the bottom of the machine body, a supporting frame is fixedly installed at the bottom of the connecting box, and a supporting plate is integrally and fixedly installed at the bottom of the supporting frame. An air cylinder is fixedly installed at the rear end of the top of the supporting plate, a top plate is fixedly installed on the front face of the output end of the air cylinder, a second clamping plate and a first clamping plate are slidably arranged on the two sides of the front end of the top plate correspondingly, and inclined grooves are formed in the rear ends of the first clamping plate and the second clamping plate in a penetrating mode correspondingly; a stop lever is slidably arranged at the center of the bottom of the connecting plate, and the bottom end of the stop lever is slidably arranged in the inclined groove. By fixing one end of the foreign matter, shaking of the foreign matter during obstacle clearing is reduced, obstacle clearing difficulty is lowered, and obstacle clearing efficiency is improved.

The invention discloses a flutter suppression milling cutter design method and a cutter, and relates to the technical field of cutting design, and the flutter suppression milling cutter design method comprises the following steps: constructing a cylindrical cutter model based on the diameter of a milling cutter and the length of a cutter handle, including a cutter handle and a cutting edge part, and scanning and cutting off the cutting edge part to obtain a peripheral cutting edge parallel to a generatrix; drawing a chip groove structure to form a cutter bottom edge, connecting the peripheral edge and the bottom edge by using a cutter point hyperbolic arc section, converting the arc section into a hyperbolic standard equation through coordinate transformation, analyzing radial and axial distances of tangency points, constraining shape parameters of a cutter point hyperbolic, carrying out passivating treatment, and determining a second shape parameter of a cutting edge hyperbolic; the peripheral edge is twisted to form a spiral structure, so that cutting chatter is reduced in two aspects of reducing airflow influence generated during cutting of the cutter and dispersing cutting force, and the cutting stability of the cutter is improved.

The utility model relates to the technical field of quartz sand screening, in particular to a dust falling device for quartz sand screening, which comprises a dust collecting component mounted at the upper end of a vibrating screen, the dust collecting component comprises a dust collecting cover fixedly covering the upper end of the vibrating screen, and a dust collecting pipe is fixedly mounted at the upper end of a discharge port of the vibrating screen. An annular pipe is fixedly installed on the outer side surface of the dust collecting cover, a plurality of dust collecting openings fixedly communicate with the outer side surface of the annular pipe at equal intervals, the filtering assembly is arranged on one side of the vibrating screen, and the discharging assembly is fixedly installed on the lower end surface of the filtering bin. The dust collecting pipes are arranged above the vibrating screen and above the discharging port of the vibrating screen, dust flying at the two positions is collected, dust flying caused by vibration during discharging of the discharging port is reduced, the dust is collected through the filter cartridge, the spiral blades rotate, the dust on the inner wall of the filter cartridge is scraped off, and then the dust is discharged through the discharging assembly. The permeability of the filter cartridge is kept, and the suction force at the dust collecting pipe is prevented from descending.

The utility model discloses a thin-wall cylinder barrel inner hole rough and fine integrated boring head which comprises a cutter handle and an installation seat, the cutter handle is detachably connected with the installation seat, two sliding rods are installed on the installation seat in a sliding and penetrating mode, and the two sliding rods are located on the same straight line. The ends, located outside the installation base, of the two sliding rods are fixedly connected with a rough boring tool apron and a fine boring tool apron correspondingly, and blades are installed on the rough boring tool apron and the fine boring tool apron correspondingly. According to the utility model, the rough boring tool apron and the fine boring tool apron are almost symmetrically distributed on the two sides of the mounting seat, so that the mass distribution of the tool is more uniform, the dynamic balance performance of the tool during high-speed rotation is improved, the flutter in the cutting process is reduced, and the processing progress and the surface quality are guaranteed; and the two sliding rods can be driven to move at the same time through cooperation of the two-way screw and the half nuts, so that the distance between the blade and the mounting base is adjusted, thin-wall cylinder barrels with different hole diameters can be conveniently machined, and the using effect is good.