164results about How to "Slow down the feed rate" patented technology

Set feed speed is lowered when a short circuit is detected in a range within which machining is unstable, the range starting from the point at which discharge is detected after machining starts from a machining start point, thus control is carried our according to a machining rate, thereby preventing successive occurrence of short circuits. When machining proceeds beyond the unstable range, the lowered feed speed is returned to the normal feed speed.

Provided are an apparatus and method of controlling jetting of ink of an inkjet printer. The apparatus includes at least one print head chip, which includes a temperature sensor for sensing the temperature of the print head chip and a voltage controlled oscillator (VCO) for converting the sensed temperature to a frequency component. The apparatus may also include a counter, which converts the frequency component to a code information using a reference frequency component, and a controller, which controls the ink jetting operation of the at least one print head chip based on the code information and/or the frequency component.

The invention discloses a neutralization reaction device. The technical scheme is that the neutralization reaction device comprises a caustic soda liquid metering tank, a caustic soda liquid barrel, an acid liquid barrel, a neutralization kettle, a PLC, a first adjusting valve and an accurate control unit, wherein two material inlets are formed in the top end of the neutralization kettle, wherein one material inlet is sequentially connected with the caustic soda liquid metering tank and the caustic soda liquid barrel, and the other material inlet is connected with the acid liquid barrel; the accurate control unit is used for accurately controlling materials; the first adjusting valve is arranged on any material inlet; the neutralization kettle is internally provided with a temperature sensor, and a temperature signal in the neutralization kettle is transmitted to the PLC so as to control the switch flow rate of the first adjusting valve by the PLC. The device and the method both can be used for accurately controlling acid liquid and caustic soda liquid in real time effectively in the neutralization reaction process, so that the neutralization effect is ensured.

The embodiment of the invention discloses a method and a system for controlling the feeding speed of a vibrating feeder. The method comprises the following steps: feeding materials to an impact crusher at a certain feeding speed by virtue of the vibrating feeder, wherein the larger the particle sizes of the materials are, the larger the load of an engine connected with the impact crusher is and the lower the rotating speed of the engine is under the condition that the feeding speed is constant; monitoring the current rotating speed of the engine during the working of the impact crusher according to a preset period or in real time by virtue of a speed measurement sensor, and sending the current rotating speed to a programmable logic controller (PLC); and controlling the feeding speed of the vibrating feeder according to the received current rotating speed of the engine by virtue of the PLC. According to the embodiment of the invention, the feeding speed of the vibrating feeder can be effectively controlled according to the intensity of the load of the engine, so that the automatic regulation of the feeding speed of the vibrating feeder is realized.

The invention relates to a method for operating a spinning machine, the spinning machine comprising a plurality of spinning units (3), fibrous composite (13) is transmitted to at least a portion of the spinning units (3) during a spinning process, in a present spinning station (4) of each spinning unit (3), rotation motion is transmitted to the fibrous composite (13), and therefore fibrous composite (13) turns into rotary yarn (7), the yarn (7) is taken off from the respective spinning station (4) through an outlet (6) and is wound up by a winding device (8), the spinning machine is supplied with power by an external power supply (10). The method is characterized in that the the yarn production in the spinning units (3) for producing the yarn (7) is stopped in case of failure or malfunction of the external power supply (10), so that a winding side yarn end is formed in the area of each spinning unit (3), each winding side yarn end is in the respective spinning station (4) or between the outlet (6) of this spinning station (4) and the winding device (8) associated with the spinning station (4), wherein the energy to for the further operation of the spinning machine until the end of yarn production is provided by at least one energy store (9). Furthermore, the invention also relates to a spinning machine which has a controller (11) which is designed to operate the spinning machine according to the above method.

The invention discloses a biomass fuel aluminum melting furnace. The biomass fuel aluminum melting furnace comprises a furnace body (1), a screw feeding machine (2) and a chimney (3). The furnace body is composed of a combustion chamber, a heating chamber and a crucible, and the crucible is arranged inside the heating chamber; a flame baffle layer and a hot air duct are arranged between the furnace wall of the heating chamber and the crucible; the chimney is communicated with the heating chamber; the fuel chute of the screw feeding machine is communicated with the combustion chamber. when the biomass fuel aluminum melting furnace works, solid biomass fuel is pushed into the combustion chamber by the screw feeding machine for combustion, flame generated through the combustion enters the heating chamber through a flame vent and heats the crucible around the outer wall of the crucible front bottom to top through the hot air vent under the action of the flame baffle layer, and smoke is exhausted to the atmosphere through the chimney. According to the technical scheme of the biomass fuel aluminum melting furnace, through the flow retarding function of the flame baffle layer, heat exchange is enhanced, temperature dissipation of the heating chamber is retarded and the aluminum alloy melting temperature inside the crucible can be maintained, accordingly, the biomass fuel aluminum melting furnace can achieve the objects of energy consumption reduction and cost saving.

A sharp corner judgment means judges as to whether a corner of cut shape in a workpiece is a sharp corner is not on the basis of a machining program. When the corner is regarded as the sharp corner, an additional locus producing means for producing sharp corner produces an additional locus for producing sharp corner when machining on the corner regarded as the sharp corner, and a sharp corner machining execution means executes machining on the corner on the basis of the produced additional locus for producing sharp corner. Then, the additional locus for producing sharp corner can be automatically produced for the sharp corner so as to execute machining.

The efficient precise grinding process of titanium alloy workpiece in a conventional apparatus includes the following steps: trimming super high speed resin adhered diamond grinding wheel or ceramic bonder adhered CBN grinding wheel to outer jiggling within 5 micron and sharpening; performing real-time dynamic balancing of the grinding wheel with a dynamic balancing system to unbalance amount within 0.1 micron; and grinding titanium alloy workpiece in the conditions of water-base cooling liquid supplying pressure of 7-9 MPa, grinding wheel grinding rate of 3.3-180 cu mm/mm.s, grinding wheel linear speed of 60-150 m/s, grinding depth of 0.1-1.8 mm and workpiece feeding speed of 1-6 m/min. The present invention has high titanium alloy workpiece grinding efficiency, low cost and high grinding quality.

The invention relates to a groove machining method. The groove machining method comprises the steps that firstly drawing side boundaries of a to-be-machined area on a blank; using a hard alloy square head groove blade to conduct rough machining on the blank to enable the hard alloy square head groove blade to move back and forth between two opposite side boundaries of the to-be-machined area; using a hard alloy round head groove blade to conduct finish machining on the blank to enable the hard alloy round head groove blade to move along the machined profile and machine the remaining allowance. By utilizing the technical scheme, different blades are used in the rough machining and finish machining stages, the blade swings back and forth in the to-be-machined area in rough machining, a combination of a straight line machining route and a curve machining route is utilized, the feed speed of the straight line machining route is high, the feed speed of the curve machining route is low, blade machining rigidity is improved, phenomena such as clip clamping and tool tipping are avoided, machining stability is enhanced, vibration of the blades in the cutting process is reduced, machining quality and efficiency are improved, and production cost is reduced.

The invention discloses a numerical control cable maker featured by comprising a wire stripper, a wire transfer rack and a tension rack; the wire transfer rack is provided with a first driving unit used for driving a wire cylinder to rotate; the tension rack is arranged between the wire stripper and the wire transfer rack, and comprises a guide bar arranged in the vertical direction; the guide bar is provided with a wire pass rack; the cable penetrates the wire pass rack; the tension rack is also provided with a coiler; the coiler comprises a reel wire; one end of the reel wire is fixedly connected with the wire pass rack; the numerical control cable maker also comprises a control system; the control system comprises a controller and a tension sensor; the tension sensor can measure the reel wire received pulling force; the first driving unit is electrically connected with the output end of the controller; the tension rack can monitor the tension force in real time in a cable feeding process, and adjusts the cable feeding speed according to measured values, thus adapting to the cable making speed, and realizing precision feeding.

The invention discloses an inclined wedge type grinding head feeding device. The inclined wedge type grinding head feeding device comprises an engine base, a guide column, a shell, a second oil cylinder, a roller wheel, a feeding slope rod, a first oil cylinder and a sensing component, wherein the guide column is fixedly connected with the engine base; the shell is in sliding fit with the guide column and is used for arranging a grinding head; the second oil cylinder is fixedly connected with the engine base and is used for pulling the shell towards the engine base; the roller wheel is arranged on the guide column; the feeding slope rod is arranged in the shell in a sliding mode; the first oil cylinder is arranged on the shell and is used for pulling the feeding slope rod; the sensing component is used for sensing the limit position of the feeding slope rod; and a control signal of the first cylinder is from the sensing component. The feeding device can feed slowly, reduces the feeding speed in multiples, can automatically feed and retract, and can feed repeatedly for many times without fault.

The invention discloses a gas compressor blade robot abrasive belt grinding and polishing machining method, which comprises the steps: S100, a robot grinding and polishing system is built, and a robotis calibrated and a motion path is planned; S200, an orthogonal experiment is carried out with the abrasive belt model, the granularity and the radius of a contact wheel of the grinding and polishingmachine as known quantities and the robot feeding speed, the abrasive belt linear speed and the grinding force as grinding and polishing variables, and a grinding and polishing experiment is carriedout on the blade through a robot grinding and polishing system, and a grinding and polishing blade sample is obtained; S300, the grinding depth, the surface roughness and the surface topography characteristics of the grinding and polishing blade sample are measured, and a cut-in, middle and cut-out part material removal rate model considering the cut-in, cut-out over-grinding or under-grinding phenomenon is established; and S400, main influence factors of the material removal rate model according to the material removal rate model is analyzed, the main influence factors during cut-in and cut-out are optimized and adjusted, and multiple groups of optimization parameters are estimated. According to the method, the phenomena of over-grinding and under-grinding are reduced to the maximum extent, and the surface quality and flatness of the workpiece are improved.

A machining system of the present invention includes a robot having a hand, a processing machine to rotate a machining tool, a control unit which controls the processing machine and the robot so as to rotate the machining tool and press a workpiece held by the hand against the machining tool to thereby machine the workpiece, and a force sensor which detects force acting between the workpiece and the machining tool when the workpiece is pressed against the machining tool by the robot and is machined by the machining tool. The control unit regulates the workpiece feed speed of the robot and the rotational speed of the machining tool so that the force value detected by the force sensor is between a predetermined upper threshold and a predetermined lower threshold.

The invention discloses an electromechanical solution combination feeding driving control device in high-hardness spherical precision grinding and a method thereof; a ball screw is driven by a servo motor to rotate; a nut of the ball screw drives a first piston rod in a first oil cylinder to linearly and to linearly move from right to left move; hydraulic oil driving the left end of a piston in the first oil cylinder flows to the left end of a piston of a second oil cylinder from the first oil cylinder through a left flow channel, so that a second piston rod is driven to move bilaterally; a grinding wheel frame sliding base is driven to carry out feeding movement through a second connection block; when the feeding speed is high and the grinding and removing speed is low, the grinding pressure can be gradually increased; the oil pressures at the left sides of the pistons of the first oil cylinder and the second oil cylinder are increased; the numerical values of a pressure sensor and a pressure gauge installed on a three-way joint are increased; and the feeding speed is determined by obtaining the pressure change of the pressure sensor. According to the device disclosed by the invention, the grinding control with constant pressure can be realized without a complex hydraulic servo system, thus, the feeding rate of a grinding device, the grinding and eliminating rate and the grinding wheel abrasive loss rate are kept balance.

The invention provides a multifunctional combined feeding device for the animal husbandry. The feeding device comprises a landing base, an inserted link, an insert tube, a base, universal wheels, slide rails, a switch, a sliding rotation feeding plate structure, a stirrer, a component plate structure, a supporting plate, a water spraying raft structure, a longitudinal supporting beam, a cross beamand a hanging hook. According to the feeding device, the position of a water storage raft can be adjusted through a spring hinge due to the arrangement of a water storage raft, a primary hoop, the spring hinge, a hanging rod and a secondary hoop, the operation is facilitated, and the labor operation intensity is reduced; an external tap water pipe can be connected through a metal hose due to thearrangement of a metal hose, a U-shaped water feeding pipe, a sprayer and a rubber plug, water spraying operation can be carried out through the sprayer, so that breeding of the animal husbandry can be favored, and the using function of the device can be added.

The invention discloses a preparation method and application of Schwertmannite. The preparation method comprises the following steps: (1) preparing Schwertmannite by using waste iron as an iron source; and (2) removing As (III) in water by using the prepared Schwertmannite. According to the invention, waste iron blocks are prepared into Schwertmannite, wherein waste iron scraps are completely dissolved with excessive H2SO4, then the iron content is measured, the molar ratio of Fe to H2SO4 is controlled to be (0.9-1): 1, the use amount of all substances can be reasonably controlled, H2O2 is added in batches, the Fe<3+> supply speed is slowed down, the SO4<2-> content is increased, more outer-layer SO4<2-> complexes are generated, As (III) in water can be effectively removed by using the Schwertmannite as an adsorbent, the adsorption reaction time is short, the treated As (III) range is wide (10-200 mg/L), the maximum As (III) adsorption capacity under the same treatment condition is remarkably higher than that of an existing adsorbent, and the product has wide application prospects.

The invention relates to a pose measurement and load sensing device for a unmanned earth moving machine, and mainly solves the problems of operation target confirmation and pose measurement related tothe operation process of the unmanned earth moving machine and load change rule sensing in the working process of an operation head. The device comprises the structures and the contents of a high-precision holder, a focal distance-change and aperture-change camera, an illumination device, a laser distance measurement sensor, an embedded control amplifying module, a remote image and data transmission system, and a display screen with cross lines; oil pressure sensors mounted in an oil inlet of the mounting head and an oil outlet of a main pump are used for detecting pressure change rules; anda remote end operation hand is helped to realize precise and effective control of the feeding speed, the feeding quantity and the feeding direction of the operation head. The device has the followingadvantages: cheap, reliable and practical pose measurement and load sensing solutions and devices are provided for remote control of precise and effective operations.