36results about How to "Control contact force" patented technology

The invention relates to a winding device (16) for winding a thread (20) onto a bobbin tube (22) in order to form a thread coil (24). The winding device comprises a spindle (34) for holding and rotating the bobbin tube (22) about its longitudinal axis (30) and a support roller (40) which rests against the circumferential surface of the thread coil (24) while the thread (20) is being wound. The spindle (34) together with the thread coil (24) can be pivoted relative to the support roller (40) by means of at least one pivotally mounted pivot arm (46). The winding device has a pressing force regulating device (54) comprising an actuator (56) for the pivot arm (46), a controller (58) for actuating the actuator (56), and a bending bar-type load cell (60) paired with the pivot arm (46). The loadcell is used to determine a respective actual value of the pressing force FA of the thread coil (24) against the support roller (40), said actual value being used to regulate the pressing force FA toa specified target value by means of the controller (58) by correspondingly actuating the actuator (56). The invention further relates to a thread processing machine (10) comprising the aforementionedwinding device (16).

The invention relates to a turbine pressurizing and torque-increasing tool for continuous oil pipes. The tool can convert torque of a turbine drill into drilling pressure and torque of a front-end tool. The technical scheme includes that a rotary drum is arranged in a central sleeve and is driven to rotate by the turbine drill. The rotary drum is externally provided with spiral grooves and drives a slide sleeve to axially move, and the slide sleeve stretches axles through support arms, so that wheels are pressed on the well wall or the bushing. The turbine drill drives the three wheels to rotate through a transfer case. An input shaft of the transfer case drives the rotary drum to rotate through a friction ring. The opening angle of the axles of the wheels can be automatically and steplessly adjusted so as to adapt to changes of the hole diameter. The torque of the turbine drill can be increased through the transfer case, so that better conditions can be provided for the front-end drilling tool.

The invention discloses a detector for detecting the pressure and whether a cover is closed in place of an electric pressure cooker, which comprises an outer pot, a cover and a pressure regulator with an ejector rod. A switch is fixed on the outer pot, corresponding to a part below the pressure regulator. The ejector rod moves vertically to penetrate through a through hole of the pressure regulator and a through hole in the edge of the outer pot. One end of the ejector rod is contacted with the switch, and the other end of the ejector rod protrudes from the edge of the outer pot. The cover is closed in place. The guide slot of the cover is positioned right above the end of the ejector rod. The pressure regulator is composed of a casing, a spring, an ejector pin and a screw rod. The casing is provided with a through hole. The two ends of the through hole are provided with inwardly extending steps. The ejector pin is installed in the through hole. The step on the ejector pin is limited by the step on one end of the through hole, while one end of the ejector pin is contacted with the switch after passing through the through hole. One end of the spring is sheathed on the ejector pin, while the other end of the spring is sheathed on the step of the through hole on the casing. The detector is characterized by being low in cost and having multiple functions of safeguard, and can be suitable for the pressure control and the safeguard for opening and closing the cover of the electric pressure cooker.

The invention discloses a force feedback closed-loop control composite bonding device. A micro-moving device is driven by a macro-moving device to perform transverse translation and vertical translation; the micro-moving device comprises a giant magnetostrictive actuator, and the length of the giant magnetostrictive actuator is changed to drive a mounting rod to move, and the telescopic amplitudeof the giant magnetostrictive actuator is very small, so that the giant magnetostrictive actuator is used for driving the mounting rod to accurately move in a small range; a strain gauge is used for detecting the contact force between the mounting rod and a substrate; the strain gauge is used for providing feedback for the micro-moving device, and the telescopic amount of the giant magnetostrictive actuator is controlled according to detection signals; when a chip is relatively far away from the substrate, the macro-moving device moves quickly, the macro-moving device is stopped when reachinga relatively close distance from the substrate, the micro-moving device drives the chip to move, and when the chip contacts the substrate, a contact force is generated, and feedback is formed throughthe contact force, so that larger pressure is avoided on the chip; and the macro-moving device or the micro-moving device is used for driving in different stages of mounting, so that the contact force is accurately controlled on the basis of guaranteeing the mounting efficiency, and the chips are prevented from being crushed.

The invention belongs to the related technical field of intelligent machining, and discloses a device and a method for force controlling polishing a blade through dragging a teaching robot. The devicecomprises the robot, a six-dimensional force sensor, a polishing mechanism, a position changing machine, and a robot control system; the six-dimensional force sensor is connected with a tail end executor of the robot and the polishing mechanism; the position changing machine is used for bearing the to-be-machined blade; the robot, the six-dimensional force sensor and the polishing mechanism are connected to the robot control system; the six-dimensional force sensor is used for measuring the contact force between the blade and the polishing mechanism in the blade polishing process, and transmitting the detected data to the robot control system; the robot control system is further used for receiving the tail end position information data of the robot, processing the received data to obtainthe corresponding control quantity, and then controlling the robot to drive the polishing mechanism to carry out corresponding motion. According to the device and the method, the skill requirement foran operator is reduced, and the machining consistency and the machining precision are improved.

The invention provides a pantograph dynamic operation performance control method and device. The pantograph dynamic operation performance control method comprises the steps that a pantograph line aerodynamic performance test is performed so that aerodynamic performance parameters of a pantograph in different open directions and speed levels are generated; a pantograph and catenary current collection performance test is performed so that the pantograph and catenary current collection performance parameters of the pantograph in different operation lines and different open directions and speed levels are generated; a catenary contact force trend regression curve under different speed levels and different open directions is drawn by utilizing a quadratic polynomial curve regression method according to the pantograph and catenary current collection performance parameters and the aerodynamic data; and dynamic operation performance of the pantograph is controlled according to the catenary contact force trend regression curve. With application of the pantograph dynamic operation performance control method and device, the pantograph dynamic operation performance parameters of the pantograph can be accurately controlled so that indirect contact force of the pantograph and the catenary can be accurately controlled, and great current collection of the catenary and the pantograph can be guaranteed.

The invention relates to the field of snow clearing equipment, in particular to a snow clearing device for the ice surface of a fish pond, which includes a support frame, a moving mechanism, a left and right rotation mechanism, an up and down rotation mechanism, a cleaning mechanism, a snow pushing frame, a snow pushing frame retracting mechanism, an adjusting The worm and the mobile power supply move the device through the moving mechanism, clean through the cleaning mechanism, adjust the cleaning angle through the left and right rotation mechanism, adjust the cleaning strength through the up and down rotation mechanism, and use the snow pusher and the snow pusher retraction mechanism to clean the snow. The thick part is pushed to improve the efficiency of snow removal. The invention can clean the snow on the ice surface of the fish pond, reduce labor intensity, and save time and effort.

The invention discloses a glue coating idler wheel, a glue coating device and a glue coating system. The glue coating idler wheel comprises an idler wheel body and at least one annular protrusion molded on the circumferential outer wall surface of the idler wheel body in a protruded manner, at least one side wall surface in the radial direction of the at least one annular protrusion appears as a first inclined surface, and the axial direction width of a first end surface, close to the idler wheel body, of the at least one annular protrusion is larger than that of a second end surface, away from the idler wheel body, of the at least one annular protrusion to make the at least one first inclined surface incline outwards from a second end towards a first end; the glue coating device comprisesthe glue coating idler wheel, a glue supplying mechanism and a supporting mechanism; and the glue coating system comprises the glue coating device and a rotating platform. According to the glue coating idler wheel, the glue coating device and the glue coating system, because the at least one annular protrusion is molded on the circumferential outer wall surface of the idler wheel body in a protruded manner, the at least one side surface in the radial direction of the at least one annular protrusion appears as the first inclined surface, therefore, in the glue coating process, point contact isformed between a glue body to be coated and the at least one annular protrusion of the idler wheel, abnormal bumping of the glue body to be coated can be effectively prevented, and meanwhile, the problem of glue overflow is avoided.