The invention provides an ultrasonic transducer for performing viscosity reduction on viscous crude. The ultrasonic transducer comprises a first oscillator, a first amplitude change rod and a second amplitude change rod, wherein the first oscillator is a half-wave length oscillator, and comprises a first rear cover plate, a first piezoelectric ceramic crystal heap and a second piezoelectric ceramic crystal heap; a first nodal surface is formed at a joint of the first piezoelectric ceramic crystal heap and the second piezoelectric ceramic crystal heap; the vibration velocity of an oscillator atthe first nodal surface is zero; the first amplitude change rod is a half-wave length three stage type amplitude change rod, and comprises a first front cover plate, a first transition section part and a first cylinder part; the first transition section part comprises a second nodal surface; the vibration velocity of the oscillator at the second nodal surface is zero; the second amplitude changerod is a half-wave length three stage type amplitude rod, and comprises a second cylinder part, a second transition section part and a radiation head; the second transition section part comprises a third nodal surface; and the vibration velocity of an oscillator at the third nodal surface is zero. The ultrasonic transducer disclosed by the invention has the advantages of being resistant to high temperature, capable of continuously working for a long term, large in batch processing scale and the like, and the transport capacity of crude oil can be improved.

Ultrasonic transducer for performing viscosity reduction on viscous crude and ultrasonic transducing device

The invention provides an ultrasonic main shaft capable of automatically replacing a cutter. The ultrasonic main shaft comprises a machine body and a shaft core; the shaft core is pivoted in the machine body through an upper bearing and a lower bearing arranged at the upper and lower ends of the machine body; an ultrasonic module is positioned between the upper bearing and the lower bearing, and is used for generating ultrasonic vibration; and a broach mechanism is assembled in the ultrasonic module, and is used for locking and loosening the cutter. A signal emitter of the ultrasonic module ismounted between the bearings, and a transducer is mounted in the shaft core, so that the internal space of the main shaft is effectively utilized, the suspension distance of the cutter is greatly reduced, the rigidity of a whole clamping system is improved, the rotating deflection of the cutter is reduced, and the machining precision of the main shaft is improved; and through removal of a shank,an inner conical surface of an amplitude change rod is only matched with an outer conical surface of a cylinder clamp, so that the clamping precision of the cutter is greatly improved, the machining precision of the main shaft is improved, and the investment cost of customers on the shank is reduced.

Ultrasonic main shaft capable of automatically replacing cutter

The utility model discloses a knife handle electric conductor. INCLUDING CONTACT ANODE, a contact positive electrode is inserted into the contact negative electrode; a rubber plug is tightly connectedto the upper portion of the outer wall of the contact positive electrode in a sleeving mode, the outer wall of the rubber plug is tightly attached to the contact negative electrode, the lower portionof the outer wall of the contact positive electrode is tightly connected with an insulating sleeve in a sleeving mode, the outer wall of the insulating sleeve is tightly attached to the inner wall ofthe contact negative electrode, and a plurality of rubber sliding blocks are machined around the outer wall of the insulating sleeve. Knife handle electric conductor, a stepped shaft is machined on the outer wall of a contact negative electrode; the operation of clamping compression springs with different sizes on the contact negative electrode by a worker can be facilitated; by means of the insulating sleeve with the diameter gradually increased from top to bottom, the contact positive electrode and the wire can be clamped through compression of rubber after the insulating sleeve is pluggedinto the contact negative electrode, and therefore it is avoided that when the tool works, the wire is stressed to move, a welding point is broken, and normal use of the tool is affected.

Knife handle electric conductor

The invention discloses an automatic tool changing ultrasonic electric main shaft using a conventional shank. The automatic tool changing ultrasonic electric main shaft comprises a shell, a special amplitude change rod and a pull rod; the special amplitude change rod comprises a transducer rod, a flange plate and a vibration amplitude amplifying rod connected in sequence; a conventional shank mounting taper hole is formed in the end, far from the flange plate, of the vibration amplitude amplifying rod; and the special amplitude change rod is provided with a center broach mechanism hole communicating with the conventional shank mounting taper hole. An ultrasonic vibration unit is integrated with the electric main shaft; through special design, an amplitude change rod structure is matched with a standard broach mechanism and the conventional shank; high-frequency ultrasonic vibration of a cutter can be realized by using the conventional shank; meanwhile, as the conventional shank is adopted, under the condition of not changing a traditional tool magazine structure, automatic tool changing is realized, the cost of purchasing a lot of ultrasonic vibration shanks is saved, and the machining efficiency is prominently improved; and the automatic tool changing ultrasonic electric main shaft has a transducer temperature real-time detecting function, performs air cooling on a transducerthrough special air way design, and guarantees stable work of the ultrasonic vibration unit.

Automatic tool changing ultrasonic electric main shaft using conventional shank

The invention discloses an ultrasonic vibration system for cutting honeycomb core materials. The ultrasonic vibration system comprises a first-stage ultrasonic vibration system, a second-stage ultrasonic vibration system and an ultrasonic cutting tool, wherein the first-stage ultrasonic vibration system comprises a first-stage transducer and a first-stage ultrasonic horn, and the second-stage ultrasonic vibration system comprises a second-stage transducer and a second-stage ultrasonic horn; and the second-stage transducer comprises a second-stage piezoelectric ceramic piece and a second-stagerear cover plate, and the front end of the first-stage ultrasonic horn is connected with the second-stage ultrasonic horn. The integral size of the ultrasonic vibration system is reduced while large amplitude is generated, and the problems that the lateral vibration generated by oversize of the radial size and the volume of the ultrasonic cutting tool is large and the rotating speed is low due tothe fact that the axial size is too large are effectively reduced; and the requirements of cutting the paper honeycomb materials by the ultrasonic cutting can be met, the energy transmission loss canbe reduced, and the machining cost can be reduced.

Ultrasonic vibration system for cutting honeycomb core materials

The invention provides a dual-excitation ultrasonic elliptical vibration-cutting device. The dual-excitation ultrasonic elliptical vibration-cutting device comprises a longitudinal vibration ultrasonic vibrator and a bent ultrasonic vibrator, wherein the longitudinal vibration ultrasonic vibrator comprises a first pre-tightening bolt and a longitudinal vibration rear cover plate, piezoelectric ceramic, an electrode slice and a longitudinal vibration front cover plate which sleeve the first pre-tightening bolt; the bent ultrasonic vibrator comprises a second pre-tightening bolt as well as a bent vibration rear cover plate, piezoelectric ceramic, an electrode slice and a bent vibration front cover plate which sleeve the second pre-tightening bolt, wherein a tool is connected onto the bent vibration front cover plate; and the first pre-tightening bolt is connected onto the bent vibration rear cover plate. Through the longitudinal vibration ultrasonic vibrator, two phases, in the radial direction of the device, of the longitudinal vibration ultrasonic vibrator, and in the axial direction of the device, of the bent ultrasonic vibrator have excitation of certain phase difference, so thatthe device has a dual-bent-vibration mode, and therefore, an elliptical vibration track is output on the tool. The dual-excitation ultrasonic elliptical vibration-cutting device is remarkable in effect in high-integrity processing of a crisp and hard difficult-to-process material, can remarkably reduce tool abrasion, restrains processing flutter, reduces concave pits and micro cracks of the processing surface, and reduces workpiece surface roughness.

Dual-excitation ultrasonic elliptical vibration-cutting device

The invention provides a single-excitation ultrasonic oval turning device comprising an ultrasonic power source, a device shell and an ultrasonic oval vibration cutting unit sealed in the device shell. The ultrasonic power source is connected to the device shell. The device shell is detachably connected to the workbench of the machine tool. The ultrasonic oval vibration cutting unit comprises an input end fixed to the device shell, an output end connected with a cutter and multiple vibration transmitting rods connected between the input end and the output end. The multiple vibration transmitting rods are different in structural properties, so that phase difference exists between the phases of vibration, and then an oval vibration path is output. By means of designing and replacing two-grade vibration transmitting rods, the output oval vibration path can be changed, in combination with different machining application occasions, the oval vibration path is reasonably adjusted, and then better machining quality is obtained. By the adoption of the single-excitation oval vibration implementation scheme, ultrasonic oval vibration output is stable, the overall structure is easy and convenient, and industrialization is facilitated to be achieved.

Single-excitation ultrasonic oval turning device

The invention provides a single-excitation three-dimensional ultrasonic elliptic turning device The device comprises an ultrasonic power supply, a device shell and an ultrasonic elliptic vibration cutting unit in the device shell, wherein the ultrasonic power supply is connected with the device shell; the device shell is fixed on a worktable of a machine tool; the ultrasonic elliptic vibration cutting unit comprises an input end which is fixed on the device shell, an output end which is connected with a cutter and a plurality of vibration rods which are connected between the input end and theoutput end; and the plurality of vibration rods are different in the aspect of structural property, so that the phases of vibration have phase differences so as to output three-dimensional elliptic tracks The device has the characteristics of being simple in structure, small in machining interference, high in cutting efficiency, adjustable in three-dimensional vibration track of the cutter and relatively high in applicability

Single-excitation three-dimensional ultrasonic elliptic turning device

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