CN107191563A - Brand-new ultrasonic wave screw thread pair - Google Patents

Abstract

The invention relates to a brand-new ultrasonic thread pair, which is characterized in that the nut body is made of piezoelectric material or magnetostrictive material or other materials capable of generating high-frequency vibration, and the nut body can directly generate radial high-frequency vibration when it is working ; The screw is made of piezoelectric material or magnetostrictive material or other materials capable of generating high-frequency vibrations, and the ultrasonic screw can directly generate radial high-frequency vibrations when it is working. Its advantages are: when working, it can generate high-frequency vibration, greatly reduce the friction between the contact surfaces of thread pairs, improve the transmission accuracy between thread pairs, increase the service life of thread pairs, improve durability, and reduce manufacturing and use costs.

Description

New ultrasonic thread pair

technical field

The invention belongs to the technical field of thread transmission, and in particular relates to a brand-new ultrasonic thread pair.

Background technique

In the existing electromechanical equipment, screws, nuts and ball screws are the most widely used transmission components, especially in the transmission of high-end precision machines, many ball screw nut pairs are used. The ball screw nut pair has high transmission accuracy and frictional resistance. Small, but its manufacturing process is complicated, the production cost is high, and the use and maintenance costs are also high.

The suspension support and anti-friction capabilities of the ultrasonic vibration surface have been proven and have been used in a variety of practical applications. Some studies have found that ultrasonic waves can reduce the frictional resistance between contact surfaces by more than 90%. Many researchers at home and abroad have begun to use ultrasonic waves. Bearings and ultrasonic motors, but so far no research on ultrasonic threaded rods and nuts has been published.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a brand-new ultrasonic thread pair, which can generate high-frequency vibration during operation, greatly reduce the friction between the contact surfaces of thread pairs, improve the transmission accuracy between thread pairs and increase the service life of thread pairs , improve durability, reduce manufacturing and use costs.

In order to achieve the above object, the first technical solution of the present invention is realized in this way. It is a brand-new ultrasonic thread pair, including a nut body, which is characterized in that the nut body is made of piezoelectric material or magnetostrictive material or other energy Made of materials that generate high-frequency vibrations, the nut body can directly generate radial high-frequency vibrations when it is working.

In the technical solution, an outer casing is also included, the outer casing is made of high-strength material, and the outer casing is fixedly sleeved outside the nut body.

In this technical solution, the outer cylindrical surface of the nut body is consolidated with the inner hole of the outer casing.

In this technical solution, external threads are provided on the outer cylindrical surface of the nut body, internal threads are provided in the inner hole of the outer shell, and the internal threads of the outer shell and the external threads of the nut body are consolidated together .

In order to achieve the above-mentioned purpose, the second technical solution of the present invention is realized in this way, it is a kind of brand-new ultrasonic thread pair, comprises screw rod, it is characterized in that described screw rod is made of piezoelectric material or magnetostrictive material or other can produce Made of high-frequency vibration material, the screw can directly generate radial high-frequency vibration when it is working.

In this technical solution, a mandrel is also included, an inner hole is provided on the screw rod, the mandrel is arranged in the inner hole of the screw rod and fixed, and the mandrel is made of high-strength material.

In this technical solution, the outer cylindrical surface of the mandrel is consolidated with the inner hole of the screw.

In this technical solution, an external thread is provided on the outer cylindrical surface of the mandrel, and an internal thread is provided on the inner hole of the screw rod, and the mandrel is located in the inner hole of the screw rod and is consolidated together by threads.

Compared with the prior art, the present invention has the following advantages: simple structure, high-frequency vibration can be generated during operation, greatly reducing the friction between the contact surfaces of thread pairs, improving the transmission accuracy between thread pairs, increasing the service life of thread pairs, and improving durability. The transmission precision is high, the manufacturing process is simple, the production cost is low, the cost of manufacturing and use is reduced, and the cost of use and maintenance is also low. It can be used in high-end precision equipment such as CNC machine tools and precision injection molding machines to replace the existing ball screw transmission pair, or use For other equipment requiring high-precision transmission.

Description of drawings

Fig. 1 is the structural representation of embodiment one;

Fig. 2 is the structural representation of embodiment two;

Fig. 3 is the structural representation of embodiment three;

Fig. 4 is the structural representation of embodiment four;

Fig. 5 is the structural representation of embodiment five;

Fig. 6 is a schematic structural diagram of the sixth embodiment.

detailed description

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

Embodiment one

As shown in FIG. 1 , it is a brand-new ultrasonic thread pair, including a nut body 1 made of piezoelectric material or magnetostrictive material. When working, the nut body 1 can directly generate high-frequency vibration.

Embodiment two

As shown in Figure 2, it is a brand-new ultrasonic thread pair, including a nut body 1 and an outer shell 2, the outer shell 2 is made of high-strength material, and the nut body 1 is made of piezoelectric material or magnetostrictive material Made, the outer cylindrical surface of the nut body 1 and the inner hole of the outer shell 2 are consolidated together. When working, the nut body 1 can directly generate high-frequency vibration.

Embodiment Three

As shown in Figure 3, it is a brand-new ultrasonic thread pair, including a nut body 1 and an outer shell 2, the outer shell 2 is made of high-strength material, and the nut body 1 is made of piezoelectric material or magnetostrictive material The outer cylindrical surface of the nut body 1 is provided with external threads, and the inner hole of the outer shell 2 is provided with internal threads, and the internal threads of the outer shell 2 and the internal threads of the nut body 1 are consolidated together. When working, the nut body 1 can directly generate high-frequency vibration.

In Embodiment 1, Embodiment 2 and Embodiment 3, when working, the internal threads of all the nuts can generate radially inward high-frequency vibrations, which can greatly reduce the friction between the external threads of the screw that it cooperates with. .

Embodiment four

As shown in Fig. 4, it is a brand-new ultrasonic thread pair, including a screw 3, and the screw 3 is made of piezoelectric material or magnetostrictive material. When working, the screw rod 3 can directly generate high-frequency vibration.

Embodiment five

As shown in Fig. 5, it is a kind of brand-new ultrasonic thread pair, comprises screw rod 3 and mandrel 4, is provided with inner hole in described screw rod 3, and described mandrel 4 is arranged in the inner hole of screw rod 3, and mandrel 4 The outer cylindrical surface of the screw rod 3 is consolidated with the inner hole of the screw rod 3, the screw rod 3 is made of piezoelectric material or magnetostrictive material, and the mandrel 4 is made of high-strength material. When working, the screw rod 3 can directly generate high-frequency vibration.

Embodiment six

As shown in Figure 6, it is a brand-new ultrasonic thread pair, including a screw 3 and a mandrel 4, an inner hole is provided in the axial direction of the screw 3, and the mandrel 4 is arranged in the inner hole of the screw 3, External threads are provided on the outer cylindrical surface of the mandrel 4, and internal threads are provided on the inner hole of the screw rod 3. The mandrel 4 is located in the inner hole of the screw rod 3 and is consolidated together by threads. The screw rod 3 is made of piezoelectric material. Or magnetostrictive material is made, and mandrel 4 is made of high-strength material. When working, the screw rod 3 can directly generate high-frequency vibration.

In Embodiment 4, Embodiment 5 and Embodiment 6, when working, the external threads of all the screw rods can generate radially outward high-frequency vibrations, which can greatly reduce the friction between the internal threads of the nuts it cooperates with. .

In all implementations of the present invention, because piezoelectric materials, magnetostrictive materials and related vibration technology, energy conversion technology and control technology, etc. are relatively mature, and are not the focus of the present invention, they are not described in detail in the present invention. illustrate.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and deformations to these implementations without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.

Claims (8)

1. a kind of brand-new ultrasonic wave screw thread pair, including nut body（1）, it is characterised in that the nut body（1）By piezoresistive material Material or magnetostriction materials or other can produce dither material and be made, the nut body when its work（1）Can directly it produce Raw radial direction dither.

2. brand-new ultrasonic wave screw thread pair according to claim 1, it is characterised in that also including shell body（2）, the shell body （2）It is made of high-strength material, shell body（2）Fixation is set in nut body（1）Outside.

3. ultrasonic nut according to claim 2, it is characterised in that the nut body（1）External cylindrical surface and shell body （2）Endoporus be consolidated.

4. brand-new ultrasonic wave screw thread pair according to claim 2, it is characterised in that in the nut body（1）External cylindrical surface External screw thread is provided with, in the shell body（2）Endoporus in be provided with internal thread, shell body（2）Internal thread and nut body（1） External screw thread be consolidated.

5. a kind of brand-new ultrasonic wave screw thread pair, including screw rod（3）, it is characterised in that the screw rod（3）By piezoelectric or mangneto Telescopic material or other can produce dither material and be made, the screw rod when its work（3）Radial direction high frequency vibrating can directly be produced It is dynamic.

6. brand-new ultrasonic wave screw thread pair according to claim 5, it is characterised in that also including mandrel（4）, in the screw rod（3） Provided with endoporus, the mandrel（4）It is located at screw rod（3）Endoporus in and fixed, mandrel（4）It is made up of high-strength material.

7. brand-new ultrasonic wave screw thread pair according to claim 6, it is characterised in that the mandrel（4）External cylindrical surface and screw rod （3）Endoporus be consolidated.

8. brand-new ultrasonic wave screw thread pair according to claim 6, it is characterised in that in the mandrel（4）External cylindrical surface on set There is external screw thread, in the screw rod（3）Endoporus be provided with internal thread, mandrel（4）Positioned at ultrasonic screw rod（3）Endoporus and pass through spiral shell Line is consolidated.