6 results about "Stepper motor" patented technology

A measurement-while-drilling servo-actuator for use in mud-pulse telemetry, which determines linear position of a poppet valve therein without counting revolutions of a stepper motor which positions said poppet valve. A sensor senses a magnetic field intensity value, or an inductance value, which is proportional to the position of the poppet valve relative to the sensor. A look-up table of reference outputs corresponding to known position of the poppet valve is used to determine the position of the poppet valve. A method of determining a position of a poppet valve in a mud pulser is further disclosed.

An adaptive balancing mechanism of dual-head cement troweling machine includes a water tank, a screw support base, an adjusting screw, a sensor and controller, a counterweight, a stepper motor, an underframe, a guide rail, a guide rail support plate, limit plates, and a transmission member. The controller collects the weight change information of the water in the water tank in real time according to the operation process. Adjust the position of the counterweight in real time by the stepper motor and the adjusting screw to make the two trowel heads in adaptive dynamic balance to the ground pressure.

The invention discloses a three-dimensional printing table which comprises a rack, a bottom surface support, surrounding supports, a printing head positioning system and a support positioning system,wherein the printing head positioning system comprises a microcontroller, a printing head, a stepper motor, and a corresponding belt and polished rod transmission component; the bottom surface supportand the surrounding supports are formed by discretely combining a plurality of micro supports; the support positioning system comprises a programmable logic controller (PLC) and a plurality of air cylinders connected with the PLC; and all the micro supports are correspondingly connected with the air cylinders, and can be driven by the air cylinders to perform positioning motion independently andto be spliced to form a support group frame. The invention further discloses a method for multi-sided support printing by adopting the three-dimensional printing table. Through the three-dimensional printing table disclosed by the invention, the precise integrated 3D printing of a suspended part is achieved, and the advantage of printing a suspended part provided with a complex curved surface is more obvious; and all the support components are recycled, no printing support is needed in the printing process, a lot of raw materials are saved, the post-processing process is simplified, and the time from model printing to product completion can be shortened.

The invention discloses a stepping motor. The stepping motor is provided with a bearing for supporting a rotating shaft of the motor, a bearing seat for fixing the bearing and an elastic sheet cover plate for extruding the bearing along an axial direction. A fixing through hole is formed in the middle of the bearing seat, the bearing is installed in the fixing through hole from one side of the fixing through hole, and the elastic piece cover plate is arranged at the other side of the fixing through hole. An elastic piece part abutting against the bearing is arranged on the elastic piece coverplate, and the elastic piece cover plate can be installed in the bearing seat rotatably. According to the stepping motor, by adopting the elastic piece cover plate embedded into the bearing seat, thethickness of the motor in the axis direction can be effectively reduced, the production and machining are simplified, the installation procedure is simpler, the rejection rate during the installationprocess can be reduced, the production efficiency of the stepping motor is improved, and the production cost is reduced.

The invention discloses a programmable laser scanning track device. The scanning track of a laser radar can be programmed. The device comprises three front surface reflectors, three reflector supports, two integrated stepping motors, two motor fixing supports and a base. The device is characterized in that by utilizing the characteristics of a wide coverage range and ultrahigh reflection efficiency of a reflection wave band of the front reflector and strong stability and high accuracy of rotation of the stepping motor, light beams are deflected in different directions at two positions of 1 and 2; and position points obtained according to a Bresenham algorithm are converted into corresponding pulse signals through an STM32 to control stepping motors at the position 1 and the position 2 respectively, and a laser scanning track is programmed. Different scanning tracks, scanning angles and laser point densities can be selected according to different requirements, the applicable laser wave band is wide, and the scanning precision is high. The scanning device is stable in operation, good in heat dissipation effect and capable of keeping high-precision scanning work for a long time.