65 results about "Ultrasonic drilling" patented technology

Disclosed herein is a gas distribution plate for use in a gas distribution assembly for a processing chamber, where the gas distribution plate is fabricated from a solid yttrium oxide-comprising substrate, which may also include aluminum oxide. The gas distribution plate includes a plurality of through-holes, which are typically crescent-shaped. Through-holes which have been formed in the solid yttrium oxide-comprising substrate by ultrasonic drilling perform particularly well. The solid yttrium oxide-comprising substrate-typically comprises at least 99.9% yttrium oxide, and has a density of at least 4.92 g/cm³, a water absorbency of about 0.02% or less, and an average grain size within the range of about 10 μm to about 25 μm. Also disclosed herein are methods for fabricating and cleaning the yttrium oxide-comprising gas distribution plate.

A borehole logging tool includes a housing oriented along a longitudinal axis, and a centralizer assembly that positions the housing substantially at the center of the borehole. In one example, the centralizer assembly includes a plurality of centralizer arms radially extendable outward from the longitudinal axis. The borehole logging tool further includes a scanning head that rotates a plurality of scanning sensors axially within the borehole about the longitudinal axis. The scanning head further includes a plurality of linkage arms coupled to the plurality of scanning sensors such that the scanning sensors are radially extendable outward from the longitudinal axis. The borehole logging tool further includes an extension assembly adapted to substantially concurrently control the radial extension of the centralizer arms and the plurality of sensors.

The present invention provides an ultrasonic and sonic mechanism of deep drilling (USMOD) that is driven by a vibrating actuator and operates in a similar manner to the gopher with regards to drilling debris removal. The actuator induces vibration in the form of a hammering actuation. The mechanism consists of a penetration bit with a diameter that is the same or larger than the actuator. The embodiment of the invention that is disclosed herein emulates a gopher. This ultrasonic gopher is lowered down into the produced borehole, cores the medium, breaks and holds the core, and finally extracts and deploys the core.

A USMOD device consists of power drive and a drill-head. The power driver generates ultrasonic pulses to activate the USMOD mechanism and it allows optimized use of power by duty cycling the signal. The drill-head consists of an actuator, free mass and a penetration bit. The actuator consists of a vibration source and a horn that amplifies the amplitude of the vibration. The horn has a cylindrical cross-section to produce a drill-head that has cylindrical configuration and eliminate undesirable trapping of extracted soil and powdered cuttings. A cavity inside the tubular-shape horn provides space for packaging miniature instrumentation and sensors. The actuator activates an integrated free-mass that hammers the penetration bit, where the free-mass operates as a transformer to lower the vibration frequency to produce the hammering action. In one implementation of the USMOD it is designed to contain a trap for collection of upward traveling dust, debris and powdered cuttings.

The invention discloses an all-electric ultrasonic drilling machine and a drilling method. The drilling machine includes a rotary mechanism, a feeding mechanism, an ultrasonic vibration mechanism, a supporting mechanism and a control system. The combination of frequency vibration force, pressure and rotational force accelerates the expansion of rock cracks to form resonance-fatigue crushing, which has higher rock crushing efficiency and energy utilization rate, and has the characteristics of less mud consumption. Through the ultrasonic vibration mechanism, the ultrasonic frequency vibration force generated by the piezoelectric ceramic acts on the rock, which greatly improves the rock breaking efficiency of the drilling rig and the service life of the drill bit, and realizes ultrasonic frequency vibration drilling. The present invention can stably carry out resonance-fatigue damage consistent with the natural frequency of the rock during normal rotary vibration drilling, reduce the crushing strength of hard rock, realize large-volume crushing, greatly increase the drilling speed and reduce the drilling cost.

The invention provides a rotary ultrasonic drilling transverse vibration stability domain predicting method. The method includes the steps of firstly, acquiring the expression of axial feeding and ultrasonic vibration parts in static drilling thickness on the basis of rotary ultrasonic drilling bit kinematics analysis, and using dynamic drilling thickness to build a transient drilling thickness model; secondly, using a drilling thickness exponential function method to build a dynamic drilling force relation; thirdly, according to the linear theory of a nonlinear periodic function, building a transverse vibration analysis model under the machining manner; fourthly, using a frequency domain solving method to solve the models above to obtain the expression of a critical drilling depth and corresponding rotation speed; fifthly, using MATLAB software to program and draw a rotary ultrasonic drilling transverse vibration stability curve to achieve stability domain predicting.

The invention provides a method for predicting axial force of the whole process of rotary ultrasonic drilling of a CFRP/Al laminated structure. The method comprises the steps that firstly, an axial motion trajectory equation of two main cutting edges is established, and a dynamic drilling thickness in the drilling process and an average drilling thickness in a vibration period are obtained; secondly, the axial force on the main cutting edges and the axial force on a transverse edge are analyzed and calculated, infinitesimal expressions of the axial force on the main cutting edges and the axialforce on the transverse edge during CFRP drilling and infinitesimal expressions of the axial force on the main cutting edges and the axial force on the transverse edge during Al drilling are established correspondingly; and then the drilling whole process is divided into a drilling-in CFRP stage, a stable CFRP drilling stage, a CFRP/Al drilling critical stage, a stable Al drilling stage and a drilling-out Al stage, aiming at machining characteristics of all the stages, axial force prediction models of five stages are established correspondingly, and finally, predicting of the axial force of the whole process of rotary ultrasonic drilling of the CFRP/Al laminated structure is achieved.

The invention discloses a preparation method of a doped polarization-maintaining optical fiber. The method includes the following specific steps of adding nanopore silicon dioxide powder to a rare earth and co-doped ion inorganic salt solution to form a suspension, centrifugally separating solid particles and liquid at high speed, conducting drying, dewatering and granulating to form ion adsorption silicon dioxide particles, conducting isostatic compaction and the like to obtain a cylindrical rare earth doped silicon oxide core bar, conducting drilling, grinding and polishing, and establishing a uniform porous silicon dioxide thin film layer on the inner wall of a core bar tube through a nanometer assembling technology. Silicon dioxide nanometer particles and doping ions are mixed in a solution, the uniformity of the doping ions in the radial direction and the axial direction of the core bar is quite high, the fiber core refraction rate profile has high flatness, the fiber core numerical value aperture precision can be adjusted, the optical fiber has high laser slope efficiency, the stress area of the rare earth ion doped optical fiber prefabricated bar in the ultrasonic drilling process can be effectively reduced by means of a multi-drilling method, and machining precision is high.

The design of the free-mass in an ultrasonic driller/corer (USDC) has been refined in order to improve the performance and operational reliability of the system. In one embodiment, the improvements in performance and operational reliability include decreasing the impact surface area of the free-mass to increase the transfer of impact energy from the piezoelectric transducer and reductions in the likelihood that the system will jam.

The invention belongs to the field of exploration tools, and discloses a hand-held ultrasonic drilling machine. The rotating shaft of the motor is connected to the output shaft through a coupling, and a conductive slip ring is fixed on the output shaft. The end is connected with the flange on the ultrasonic transducer, and the control switch controls the rotation speed of the motor and the frequency of the ultrasonic transducer. The present invention uses high-frequency (above 20,000 Hz) vibration combined with rotation to carry out drilling and sampling, and the high-frequency vibration force generated by the ultrasonic transducer acts on the drill bit, so that the drill bit can drill into the formation in the manner of cutting, shearing and breaking At the same time, the vibration frequency of the transducer is close to the natural frequency of the rock to achieve resonance drilling. Ultrasonic hand-held drilling rigs can obtain higher mechanical penetration speed under lower drilling pressure, which can greatly improve the drilling efficiency in medium-hard rock, reduce the labor intensity of operators, and reduce work costs.

The invention discloses an ultrasonic vibration cord coring drill tool. The ultrasonic vibration cord coring drill tool is characterized in that power can be supplied to a piezoelectric ceramic vibrator by a battery of the ultrasonic vibration cord coring drill tool, high-frequency voltages with different frequencies can be provided, and accordingly the piezoelectric ceramic vibrator can be excited to ultrasonically vibrate; generated ultrasonic vibration is transmitted to rock via an outer tube and a drill bit, and resonance breaking can be carried out on the rock; single-action characteristics of rock core tubes are kept among the battery, the piezoelectric ceramic vibrator and a solid shaft by the aid of bearings. The ultrasonic vibration cord coring drill tool has the advantages that the ultrasonic vibration cord coring drill tool is convenient to replace, the application range of ultrasonic drilling can be greatly expanded, the drilling periods can be shortened, and the cord coring drilling speeds can be increased.

The invention relates to an inlaying method for a gem ornament. The inlaying method comprises the following steps: polishing an inlaying body after demoulding of the inlaying body; carrying out primary cleaning and polishing; filing away the top of the inlaying body by using a flat file to ensure an inlaying opening of the inlaying body to be smooth and uniform; adjusting and calibrating the inlaying opening to an appropriate size by using an ultrasonic drilling rod with a moderate size corresponding to the size of the gem ornament; carving a pit which is 1.5 mm far away from the inlaying opening on the inlaying body and inlaying the gem ornament into the pit; filing away the periphery of the inlaying opening by using the flat file; then wetting a small cloth wheel with a polishing wax and carrying out polishing; shoveling an angled bevel edge corresponding to an edge of an inlaying ornament from the edge of the inlaying ornament to the top of the gem ornament by using a flat shovel; and finally clearing needless gold fillings and carrying out polishing. According to the invention, after stable inlaying is realized, the flat shovel is used to shovel the angled bevel edge corresponding to an edge of a prong on the inlaying body from the edge of the prong to the top of the gem ornament, which enables a diamond to be brighter and bonding between the inlay ornament and the gem ornament to be firmer.

The invention discloses a pile measuring hole obstacle clearing device based on an ultrasonic drill bit. The device comprises a cable, a counterweight block and an ultrasonic drilling machine; the ultrasonic drill bit is arranged at the front end of the ultrasonic drilling machine; an ultrasonic generator and a piezoelectric ceramic ultrasonic transducer are arranged in the ultrasonic drilling machine; the ultrasonic generator is electrically connected with the cable; the ultrasonic generator is electrically connected with the piezoelectric ceramic ultrasonic transducer through a control circuit; and the cable, the counterweight block and the ultrasonic drilling machine are all positioned in a pile measuring hole. The pile measuring hole obstacle clearing device based on the ultrasonic drill bit can effectively clear the blocked pile measuring hole, fills the blank on the clearing aspect of the pile measuring hole, solves the difficulty of incapability of measuring the pile measuring hole due to blockage, and is convenient in use, safe and efficient.

The invention relates to a processing method of a rare earth ion doped optical fiber perform. The method comprises steps as follows: a preform containing a rare earth ion doped core layer is deposited with the MCVD (modified chemical vapor deposition) technology; the preform is cut off in a preset position, sizes and positions of two holes are designed reasonably, and multiple small holes are designed in the two holes; a large drill is determined according to the diameter of the holes and a small drill is determined according to the diameter of the small holes; drilling: holes are drilled in the positions of the small holes with the small drill firstly, positions of the multiple small holes are required to overlap with the contact surface of the large drill and the preform, and after the multiple small holes are drilled, the large drill is used for drilling holes in the position of the large drill; after drilling, inner walls of the holes are polished until the inner holes reach designed sizes. The processing method has the advantages as follows: the stress area of the rare earth ion doped optical fiber preform in the ultrasonic drilling process can be effectively decreased with a repeated drilling method, and damage caused by mechanical external force to the optical fiber preform can be further weakened; the processing accuracy of the rare earth ion doped optical fiber perform can be further improved.

The invention discloses an underwater vector propulsion type ultrasonic drilling robot which comprises a vector propeller, an ultrasonic drilling device, a drilling device fixing device, a base supporting and adjusting mechanism, a sealed cabin, a hollow cylindrical shell, a lithium battery and a hemispherical shell. Three groups of vector propellers are uniformly arranged at the top of the spherical shell, each group of propeller has two degrees of freedom, a lithium battery is arranged in the sealed cabin, a hollow cylindrical shell is arranged at the lower part of the sealed cabin, and a drilling device fixing device and an ultrasonic drilling device are arranged in the hollow cylindrical shell; a hollow cylindrical shell is installed on the lower portion of the sealed cabin, the sealed cabin is hinged to a base supporting and adjusting mechanism, and the base supporting and adjusting mechanism is hinged to the hollow cylindrical shell. The seabed rock sampling device can realize seabed rock sampling work, and can stably take a rock sample to the water surface by means of the device.

The invention provides an impact-type ultrasonic drilling device free of free mass blocks. A sampling drill is mounted at the front end of an variable-amplitude rod of the drilling device. A shell ismounted on the peripheries of the tail ends of the variable-amplitude rod and the sampling drill. A return spring is located in the shell and sleeves the tail end of the sampling drill. A rear cover plate is mounted on the periphery of the tail end of the variable-amplitude rod, and is connected with the shell. A elastic gasket is mounted between the rear cover plate and the shell, a piezoelectricceramic stack is located between the variable-amplitude rod and the rear cover plate, the rear end of the variable-amplitude rod passes through the piezoelectric ceramic stack, and an insulating sleeve is disposed between the piezoelectric ceramic stack and the variable-amplitude rod. The impact-type ultrasonic drilling device has the advantages that the problems that ultrasonic drilling devicesin the prior art are all provided with the free mass blocks, need to complete two contact collisions and cause energy loss are solved; according to the impact-type ultrasonic drilling device free of the free mass blocks, the free mass blocks are omitted, and only one collision needs to be completed, so that the energy transfer efficiency of the ultrasonic drilling device is improved; the ultrasonic drilling device has low weight, low drilling pressure and low power consumption.

The invention provides a test bench for testing the comprehensive performances of an ultrasonic drilling device. The frame of the test bench is shaped like L, and an impact force sensor is mounted onthe bottom surface of the frame. A rock sample is fixedly mounted on the impact force sensor, and the ultrasonic drilling device is vertically placed on the upper surface of the rock sample. The ultrasonic drilling device is fixedly connected with a loading platform, and the loading platform is fixedly connected with an adjusting mechanism. A rotating motor is mounted on a vertical column of the frame, and a ball screw is fixed inside the vertical column of the frame through a screw fixed end support seat and a screw movable end support seat. The rotating motor drives the ball screw to rotatethrough a shaft coupler, and a screw nut is fixed on the ball screw in a sleeved manner and is fixedly connected with the adjusting mechanism. The test bench solves a problem that the parameters, suchas the load spring stiffness, the loading force, the return spring stiffness and the restoring force, cannot be measured in the prior art, and proposes the test bench for testing the comprehensive performances of the ultrasonic drilling device, which can perform the testing of the influence of the above parameters on the drilling efficiency.

The invention provides a rotary-impact-type ultrasonic drilling device without a free mass block. A sampling drilling tool and a transmission shaft of the rotary-impact-type ultrasonic drilling machine are connected, and the periphery of the transmission shaft is sleeved with a longitudinal-longitudinal torsion composite piezoelectric transducer. A front shell, a rear shell and a rear bearing endcover are connected sequentially. The tail portion of the transmission shaft penetrates out of the rear bearing end cover. A rotor is connected with a loading spring, and the compression amount of theloading spring is adjusted by adjusting the position of a nut on the transmission shaft. The tail end of the longitudinal-longitudinal torsion composite piezoelectric transducer makes contact with the rotor. The tail end of the sampling drilling tool is sleeved with a return spring and a rotary shaft sleeve, the return spring and the rotary shaft sleeve are connected, and the sampling drilling tool penetrates out of the head portion of the front shell. Through the rotary-impact-type ultrasonic drilling device without the free mass block, the problem that ultrasonic drilling machines in the prior art are all provided with free mass blocks, two times of contact collision needs to be completed, and consequently, energy is lost is solved, the free mass block is omitted, collision only needs to be completed once, and thus the energy transmitting efficiency of the ultrasonic drilling machine is improved.

The invention relates to a drilling mechanism for a small celestial body star catalogue, belongs to the technical field of aerospace deep space exploration, and aims at carrying out automatic drillingand sample collection tasks on a small celestial body surface layer sample. A weak-gravitation star catalogue drilling mechanism for deep space exploration adopts an ultrasonic drill for drilling, and can realize small-feeding-force and large-hardness sample drilling; in the drilling process, the samples are concentrated together, and after the samples are drilled to the specified depth, the sample collecting container can be closed. The protection points are a weak gravity star catalogue drilling mechanism design scheme, a working principle, a grounding assembly design and an ultrasonic drilling and sample collection integrated design scheme.

The invention provides a rock mass quality evaluation method based on an ultrasonic drilling imaging technology and a fractal method, and belongs to the technical field of engineering investigation. The method comprises the steps that firstly, a drill hole is formed in a stratum or a rock mass through a drilling technology; then a hole wall image of the drill hole is obtained in situ through the ultrasonic drilling imaging technology, and due to the self-similar characteristics of an internal structural surface of the rock mass, a fractal box dimension value of the hole wall image can be obtained by utilizing the fractal method according to the characteristics; and then a quantitative relation between the fractal box dimension value of the hole wall image and the rock quality is established, so that the rock quality in the detected stratum is rapidly and accurately evaluated without taking a rock core, the construction period is shortened, and especially the exploration efficiency is improved in a deep construction process.

The invention relates to the field of drilling machine tools, in particular to a numerical control ultrasonic drilling machine tool which comprises a supporting storage device, fixed limiting claws are symmetrically inserted into the supporting storage device in a sliding mode, and each fixed limiting claw comprises an inserting rod, a fastening screw, a fixed clamping plate, a fixed bottom plate, a movable clamping plate, a sliding key, a fixing screw, a limiting plate and an air cylinder. The fixing screws are symmetrically inserted into the side end of the limiting plate in a threaded mode, the air cylinder is fixedly connected to the top end of the interior of the limiting plate and the top end of the interior of the movable clamping plate, the sliding key is fixedly welded to the end, close to the limiting plate, of the movable clamping plate, and the inserting rod is slidably inserted into the air cylinder. Workpieces of different thicknesses can be clamped through the arrangement of the fixed limiting claw, the fixed limiting claw can move in the supporting and storing device, the workpieces can be moved without disassembling the fastening device, and through the arrangement of the supporting and storing device, chippings generated during work of the device can be stored and treated in time.