CN214849476U

CN214849476U - Maintenance-free ultrasonic power transmission mechanism

Info

Publication number: CN214849476U
Application number: CN202121058110.5U
Authority: CN
Inventors: 熊贤玉
Original assignee: Dongguan Shanshi Ultrasonic Technology Co ltd
Current assignee: Hunan Hamer Intelligent Equipment Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-11-23
Anticipated expiration: 2031-05-17

Abstract

A maintenance-free ultrasonic power transmission mechanism is characterized in that a conductive sliding ring is fixedly arranged on the upper end face of a shaft core, a sliding ring shield is arranged on the conductive sliding ring and is fixedly connected with a shaft sleeve, and a dust suction hole is formed in the sliding ring shield and is connected with a dust suction device; the conductive slip ring is sleeved with two conductive rings which are insulated from each other, and each conductive ring is connected with a power line; the inner wall of the slip ring shield is fixedly provided with two carbon brush holders which are respectively connected to the positive electrode and the negative electrode of the input end of the ultrasonic power supply, each carbon brush holder is internally provided with a carbon brush, and each carbon brush is in contact with one conductive ring. The utility model provides a traditional ultrasonic wave power transmission structure because the carbon brush wearing and tearing are great when the axle core is rotatory at high speed, the carbon dust is piled up and is influenced insulating properties, the ultrasonic wave signal transmission who causes is stable problem inadequately.

Description

Maintenance-free ultrasonic power transmission mechanism

Technical Field

The utility model relates to an ultrasonic wave processing equipment technical field especially relates to a non-maintaining ultrasonic power transmission device.

Background

The new material is a guide for industrial development and is an important strategic emerging industry, including special high-end metal, advanced high polymer material, high-performance composite material and the like, when a conventional processing means is used, a cutter or a grinding tool is easy to wear and lose efficacy too fast, the precision control is poor, and a machined workpiece is scrapped and lost due to the fact that the cutter does not have cutting force after being worn. And the frequent replacement of the machining tool and the grinding rod also increases the machining time and the machining cost, and the new material is developed and utilized. Therefore, a rotary ultrasonic machining mode combining ultrasonic machining and tool rotation is increasingly widely used.

Ultrasonic machining machine's ultrasonic transmission mode generally uses contact carbon brush sliding ring, mercury sliding ring, non-contact induction coil as the main, and the sliding ring generates heat, the carbon brush loss is big, carbon dust pollutes the short circuit, the sealed bad leakage of mercury, health and environment receive the influence, induction coil transmission power is little, high-speed rotatory transmission unstability scheduling problem after having the high-speed rotatory of main shaft, leads to the processing performance poor stability, and machining efficiency can't promote. Particularly, the carbon brush slip ring is used as the most traditional rotary conducting device, the power of a power source is conducted in a low-rotating-speed state of 1-3000 rpm, transmission is most stable, but ultrasonic processing usually needs a high rotating speed of 10000-24000 rpm. The sliding ring assembly is along outside main shaft axle center circumference, must cooperate the diameter size of axle center, and the diameter is big more, and rotatory linear velocity is just big more, and the sliding ring generates heat and the carbon brush wearing and tearing are just big more, if the sliding ring is poor with the axle core concentricity, the sliding ring runout is big, and the easy electric arc that produces of carbon brush contact surface, causes the sliding ring copper circle to produce the galvanic corrosion, more can influence the stability of transmission, restricts the use of carbon brush sliding ring. Therefore, it is necessary to invent a stable transmission structure of ultrasonic power source that can provide high power in high-speed rotation processing of the ultrasonic spindle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a non-maintaining ultrasonic wave power transmission device solves traditional ultrasonic wave power transmission structure because the carbon brush wearing and tearing are great when the axle core is high-speed rotatory, and the carbon dust is piled up and is influenced insulating properties, the ultrasonic wave signal transmission who causes is stable problem inadequately.

The utility model provides a technical scheme that its technical problem adopted is:

a maintenance-free ultrasonic power transmission mechanism comprises a shaft sleeve, a shaft core, a first power line and a second power line, and is characterized in that a conductive slip ring is fixedly arranged on the upper end face of the shaft core, a slip ring shield is arranged on the conductive slip ring, and the slip ring shield is fixedly connected with the shaft sleeve; the slip ring shield is provided with a dust suction hole, and the dust suction hole is connected with a dust suction device;

the conductive slip ring is sleeved with a first conductive ring and a second conductive ring which are insulated from each other, and the first conductive ring and the second conductive ring are respectively connected to a first power line and a second power line;

the slip ring guard shield inner wall fixed be provided with first carbon brush frame and second carbon brush frame, ultrasonic power supply input two poles of the earth pass the slip ring guard shield and be connected to first carbon brush frame and second carbon brush frame respectively, first carbon brush frame and second carbon brush frame in be provided with first carbon brush and second carbon brush respectively, first carbon brush and second carbon brush contact first conductive ring and second conductive ring respectively.

Further, the shaft core is fixedly connected with the conductive sliding ring through a bolt.

Furthermore, a plurality of assembling holes are formed in the conductive slip ring, and the inner diameter of each assembling hole is larger than the outer diameter of the bolt stud part.

Furthermore, the conductive slip ring is of an inverted T-shaped or tower-shaped structure.

Further, the first power line and the second power line penetrate through the line holes arranged in the conductive sliding ring.

Further, the dust suction device is connected to a dust bag.

Furthermore, a wiring hole or wiring groove matched with the first power line and the second power line is formed in the shaft core.

The utility model has the advantages that: the utility model installs the slip ring shield on the spindle sleeve, installs the conductive slip ring on the upper end surface of the spindle core, and can replace the conductive assembly without disassembling the spindle; the installation of the conductive slip ring can adjust the concentricity by adjusting the position of the bolt in the assembling hole, so that the radial runout is avoided, the transmission of the ultrasonic power supply is stable, and the copper ring is not damaged by electric corrosion; the conductive slip ring can reduce the diameter, reduce the linear speed of high-speed rotation, reduce the abrasion of a carbon brush, and reduce the heating and the electric corrosion of the conductive slip ring; the dust collector connected with the slip ring shield can absorb carbon powder generated by friction, reduce carbon powder accumulation and keep the insulating property of the outer wall of the power circuit, and the dust collector is connected with the dust collection bag to avoid carbon powder pollution and realize the maintenance-free mechanism.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a cross-sectional view of the maintenance-free ultrasonic power transmission mechanism of the present invention.

Detailed Description

Fig. 1 shows a maintenance-free ultrasonic power transmission mechanism, which includes a shaft sleeve 1, a shaft core 2, a first power line 3 and a second power line 4, and is characterized in that a conductive slip ring 5 is fixedly arranged on the upper end face of the shaft core 2, the conductive slip ring 5 is mounted on the upper end face of the shaft core 2, the conductive component can be replaced without detaching the main shaft, and meanwhile, the conductive slip ring 5 is no longer constrained by the diameter of the shaft core 2, so that the diameter can be reduced, the high-speed rotating linear speed can be reduced, the carbon brush abrasion can be reduced, and the heating and the electrical corrosion of the conductive slip ring can be reduced. The conductive slip ring 5 is provided with a slip ring shield 6, and the slip ring shield 6 is fixedly connected with the shaft sleeve 1; the slip ring shield 6 is provided with a dust suction hole 61, and the dust suction hole 61 is connected with a dust suction device 7. The dust collection device 7 can absorb carbon powder generated by carbon brush friction, and avoids influence on the stability of a circuit caused by the fact that excessive carbon powder is attached to the surface of an insulating part.

The conductive slip ring 5 is sleeved with a first conductive ring 9 and a second conductive ring 10 which are insulated from each other, and the first conductive ring 9 and the second conductive ring 10 are respectively connected to the first power line 3 and the second power line 4;

the inner wall of the slip ring shield 6 is fixedly provided with a first carbon brush holder 62 and a second carbon brush holder 63, the positive electrode and the negative electrode of the input end of the ultrasonic power supply penetrate through the slip ring shield 6 and are respectively connected to the first carbon brush holder 62 and the second carbon brush holder 63, a first carbon brush 64 and a second carbon brush 65 are respectively arranged in the first carbon brush holder 62 and the second carbon brush holder 63, and the first carbon brush 64 and the second carbon brush 65 are respectively contacted with the first conductive ring 9 and the second conductive ring 10.

Further, in order to facilitate fixing and adjust concentricity between the shaft core 2 and the conductive sliding ring 5, the shaft core 2 and the conductive sliding ring 5 are fixedly connected through bolts.

Further, in order to adjust the concentricity of the conductive slip ring 5 and the shaft core 2 and ensure that the conductive slip ring 5 does not generate radial runout when the shaft core 2 rotates at a high speed to influence the transmission of electric signals, a plurality of assembling holes are arranged on the conductive slip ring 5, and the inner diameter of each assembling hole is larger than the outer diameter of the bolt stud part.

Further, in order to reduce the linear speed of the frictional contact between the carbon brush and the conductive ring at a high rotation speed, the conductive slip ring 5 has an inverted T-shaped or tower-shaped structure.

Further, in order to facilitate the collection of the carbon powder and avoid contamination, the dust suction device 7 is connected to a dust bag 8.

Further, in order to facilitate the arrangement of the power line, the power line is protected, meanwhile, the power line is prevented from interfering the arrangement of the bearing between the shaft sleeve 1 and the shaft core 2, and the shaft core 2 is provided with a wire groove matched with the first power line 3 and the second power line 4.

The utility model discloses a power transmission device theory of operation: the positive and negative wires of the input end of the ultrasonic power supply penetrate through the slip ring shield 6 and are respectively connected to the first carbon brush holder 62 and the second carbon brush holder 63, when the motor drives the shaft core 2 to rotate, the first carbon brush 64 and the second carbon brush 65 uninterruptedly contact the first conductive ring 9 and the second conductive ring 10, and the circuit is communicated with the power supply of the ultrasonic knife handle 12 through the wiring terminal 11.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited to the above embodiments, and various modifications made by the method concept and technical solution of the present invention or those directly applied to other applications without modification fall within the protection scope of the present invention.

Claims

1. A maintenance-free ultrasonic power transmission mechanism comprises a shaft sleeve (1), a shaft core (2), a first power line (3) and a second power line (4), and is characterized in that a conductive slip ring (5) is fixedly arranged on the upper end face of the shaft core (2), a slip ring shield (6) is arranged on the conductive slip ring (5), and the slip ring shield (6) is fixedly connected with the shaft sleeve (1); a dust suction hole (61) is formed in the slip ring shield (6), and the dust suction hole (61) is connected with a dust suction device (7);

the conductive slip ring (5) is sleeved with a first conductive ring (9) and a second conductive ring (10) which are insulated from each other, and the first conductive ring (9) and the second conductive ring (10) are respectively connected to a first power line (3) and a second power line (4);

slip ring guard shield (6) inner wall fixed be provided with first carbon brush frame (62) and second carbon brush frame (63), ultrasonic power input two poles of the earth pass slip ring guard shield (6) and are connected to first carbon brush frame (62) and second carbon brush frame (63) respectively, first carbon brush frame (62) and second carbon brush frame (63) in be provided with first carbon brush (64) and second carbon brush (65) respectively, first carbon brush (64) and second carbon brush (65) contact first conductive ring (9) and second conductive ring (10) respectively.

2. The maintenance-free ultrasonic power transmission mechanism as claimed in claim 1, wherein the shaft core (2) is fixedly connected with the conductive slip ring (5) through a bolt.

3. The maintenance-free ultrasonic power transmission mechanism as claimed in claim 1 or 2, wherein the conductive slip ring (5) is provided with a plurality of assembling holes, and the inner diameter of the assembling holes is larger than the outer diameter of the bolt stud part.

4. The maintenance-free ultrasonic power transmission mechanism as claimed in claim 1, wherein the conductive slip ring (5) has an inverted T-shaped or tower-shaped structure.

5. The maintenance-free ultrasonic power transmission mechanism according to claim 1, wherein the dust suction device (7) is connected to a dust bag (8).

6. The maintenance-free ultrasonic power transmission mechanism as claimed in claim 1, wherein the shaft core (2) is provided with a slot adapted to the first power line (3) and the second power line (4).