CN114683097B - Ultrasonic strengthening processing system and method for cylindrical roller bearing rolling bodies - Google Patents

Abstract

The invention provides an ultrasonic strengthening processing system and method for a rolling body of a cylindrical roller bearing. The ultrasonic enhanced processing system for cylindrical roller bearing rolling body of the present invention includes a frame, a runner mechanism, a drive mechanism and an ultrasonic vibration mechanism, and the frame is provided with an airtight cavity for placing abrasive materials, and the wheel mechanism is arranged in the airtight cavity. In the chamber, the runner mechanism includes a solid wheel, on which there are multiple slots for fixing the workpiece along the circumference. The abrasive in the closed cavity is vibrated to impact the workpiece in the slot. The ultrasonic enhanced processing system and method of the present invention have high processing efficiency, stable, reliable, high-quality and high-efficiency processing effects, and can process a high-quality plastic deformation strengthening layer on the surface of the workpiece, which is conducive to improving the lubrication condition of the roller bearing and improving the bearing capacity of the rolling bearing. The improvement provides technical support.

Description

A system and method for ultrasonically intensified machining of rolling elements of cylindrical roller bearings

technical field

The invention relates to the technical field of surface strengthening processing of metal workpieces, in particular to a system and method for ultrasonic strengthening processing of rolling bodies of cylindrical roller bearings.

Background technique

Roller bearings are a kind of rolling bearings and are widely used in modern machinery. They have the advantages of small starting torque, high rotation accuracy, and convenient selection. As a large load bearing, roller bearings are widely used in various fields of industry. As the core basic components of the industry, the development of roller bearings is increasingly moving towards large loads and high precision. In this context, improving the stiffness, strength and life of bearing components has gradually become an important research proposition.

The rolling elements of roller bearings are prone to plastic deformation and pitting failure. In order to improve the bearing capacity and service life of roller bearings, a strengthening process is usually required after the rollers are processed. At present, most of the reinforcement methods are drum reinforcement. The drum is rolled over, and the rolling elements in the barrel fall by gravity to produce impact plastic deformation reinforcement. This technical method is simple and low in cost, but has the following disadvantages: 1) the processing efficiency is low, and the processing time of a batch of rolling elements usually exceeds ten hours, and the processing cycle is long, which cannot meet the increasing efficiency requirements; 2) the processing accuracy is low, due to The processing process is random and uncontrollable, and the drop angle, drop height, and frequency of the rolling elements are uncontrollable. The quality of the processed products is uneven, and re-screening is required before use; 3) There are many processing defects, and the rolling elements roll and rub in the barrel. It is easy to be scratched and damaged, and at the same time, it is easy to cause plastic deformation on the end surface of the rolling element during the falling process, thereby reducing the bearing capacity of the rolling element.

In view of this, the present invention is proposed.

Contents of the invention

The purpose of the present invention is to provide a system and method for ultrasonic strengthening processing of cylindrical roller bearing rolling body, which has high processing efficiency, stable and reliable processing effect, high quality and high efficiency, and can process high-quality plastic deformation strengthening layer on the surface of the workpiece.

The invention provides a system for ultrasonically intensified processing of cylindrical roller bearing rolling bodies, which includes a frame, a wheel mechanism, a drive mechanism and an ultrasonic vibration mechanism. The frame is provided with a closed cavity for placing abrasive materials, and the wheel mechanism In the airtight cavity, the wheel mechanism includes a solid wheel, and a plurality of slots for fixing the workpiece are opened on the solid wheel along the circumference. The ultrasonic vibration mechanism vibrates the abrasive in the closed cavity to impact the workpiece in the slot.

Further, the rotating wheel mechanism also includes a friction wheel, the firmware wheel is coaxially sleeved on the outside of the friction wheel, and the workpiece is in frictional contact with the friction wheel when placed in the slot, and the drive mechanism drives the firmware wheel and the friction wheel to rotate at different speeds to drive The workpiece revolves and rotates.

Further, the friction wheel includes a rigid wheel and a soft friction layer arranged on the surface of the rigid wheel; wherein, the material of the rigid wheel is hard plastic or metal, and the material of the soft friction layer is styrene-butadiene rubber.

Further, the drive mechanism drives the firmware wheel and the friction wheel to rotate at different speeds through the planetary gear mechanism; wherein, the friction wheel is connected to the drive mechanism through the active part of the planetary gear mechanism, and the firmware wheel is connected to the drive mechanism through the driven part of the planetary gear mechanism .

Further, the airtight cavity is funnel-shaped, the ultrasonic vibration mechanism is arranged at the bottom of the airtight cavity, the turning wheel mechanism is arranged at the top of the airtight cavity, the main shaft of the driving mechanism is fixed on the frame, the main shaft of the turning wheel mechanism and the driving mechanism connect.

Furthermore, the ultrasonic strengthening machining system for the cylindrical roller bearing rolling body of the present invention also includes loading and unloading equipment for automatically loading and unloading workpieces.

The present invention also provides a method for ultrasonically intensified processing of a rolling body of a cylindrical roller bearing, which uses the above-mentioned ultrasonic intensified processing system for a rolling body of a cylindrical roller bearing to perform ultrasonic intensified processing on a workpiece.

Specifically, the ultrasonic strengthening processing method of the cylindrical roller bearing rolling body of the present invention includes the following steps:

S1: After placing multiple workpieces in each slot of the wheel mechanism, fasten the wheel mechanism to the main shaft of the drive mechanism;

S2: Start the driving mechanism and the ultrasonic vibration mechanism. The driving mechanism drives the workpiece to revolve through the wheel mechanism and rotate for more than one revolution in the processing state. The ultrasonic vibration mechanism makes the abrasive in the closed cavity vibrate to impact the workpiece fixed in the slot. ;

S3: Stop the driving mechanism and the ultrasonic vibration mechanism and unload after the workpiece has revolved for one week.

Further, the grinding material is composed of hard balls, grinding powder and grinding liquid according to the mass ratio (14-16): (0.8-1.2): (0.5-1.0); wherein, the hard balls are 0.5-2.5mm in diameter and A single-sized ceramic ball or steel ball with a surface hardness greater than 60HRC. The grinding powder is a single-sized brown corundum powder with a particle size of 80-200 mesh. The grinding liquid is mainly composed of the following raw materials in mass percentages: phosphate amine salt compound 5-10%, Disodium hydrogen phosphate 3-5%, ethyl p-hydroxybenzoate 1-2%, fatty acid amine 0.4-0.8%, and the rest is water.

Further, the firmware wheel is controlled to rotate in a first direction at an angular velocity ω1, the friction wheel is rotated in a first direction at an angular velocity ω2, and the workpiece is rotated in a second direction opposite to the first direction at an angular velocity ω3.

Implementation of the present invention has at least the following advantages:

1. The ultrasonic enhanced processing system and method of the present invention adopts ultrasonic processing technology, and uses ultrasonic mechanical vibration to drive the enhanced abrasive material to impact the workpiece at high speed, achieving stable, reliable, high-quality and high-efficiency enhanced processing effects, and at the same time can process high-quality materials on the surface of the workpiece. The plastic deformation strengthening layer;

2. The ultrasonic enhanced processing system and method of the present invention fix multiple workpieces at the same time through the rotating wheel mechanism, so that multiple workpieces can be enhanced at the same time; in addition, due to the strong impact force and high impact frequency of ultrasonic processing technology, the processing efficiency Compared with the traditional drum type, it has a qualitative improvement, and at the same time benefits from the ultrasonic processing technology, the energy conversion and energy utilization can be effectively improved;

3. The ultrasonic enhanced processing system of the present invention is provided with an airtight cavity to place abrasives, and at the same time, the runner mechanism is arranged in the airtight cavity, so that the machined surface of the workpiece is sprayed in a controlled manner, the controllability of the enhanced quality is enhanced, and the damage rate is also improved. Further reduction, the end face needs to ensure the flatness of the non-processed surface to avoid damage and protect the bearing performance of the non-processed surface and rolling elements;

4. The ultrasonic enhanced processing system and method of the present invention can produce a plastic micro-texture layer on the surface of the rolling element workpiece, can further improve the lubrication condition of the roller bearing, and provide technical support for the improvement of the bearing capacity of the rolling bearing.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a structural schematic diagram of an ultrasonic strengthening machining system for a rolling body of a cylindrical roller bearing according to an embodiment of the present invention;

2 is a schematic structural view of a wheel mechanism according to an embodiment of the present invention;

Fig. 3 is a transmission principle diagram of a driving mechanism according to an embodiment of the present invention.

Explanation of reference signs:

1: sealed cavity; 2: firmware wheel; 3: friction wheel; 4: spindle; 5: ultrasonic vibration mechanism; 6: planetary gear mechanism; 7: workpiece; 8: abrasive material.

Detailed ways

It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used here is only used to describe specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this description, it indicates that there are Features, steps, operations, devices, components and/or combinations thereof.

The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

1 to 3, the cylindrical roller bearing rolling body ultrasonic strengthening machining system of this embodiment includes a frame, a wheel mechanism, a drive mechanism and an ultrasonic vibration mechanism 5, and the frame is provided with an abrasive material 8 The airtight cavity 1, the wheel mechanism is arranged in the airtight cavity 1, the wheel mechanism includes a solid wheel 2, on the solid wheel 2 along the circumferential direction is provided with a plurality of fixed workpiece 7 (such as cylindrical roller bearing rolling body ), the driving mechanism drives the workpiece 7 to revolve through the wheel mechanism and rotates for more than one revolution in the processing state. The ultrasonic vibration mechanism 5 makes the abrasive 8 in the airtight cavity 1 vibrate to impact the workpiece 7 in the slot.

In this embodiment, the frame is mainly used to provide support for other components; the frame is provided with an airtight cavity 1 for placing abrasives 8, and the shape of the airtight cavity 1 can be funnel-shaped, and the ultrasonic vibration mechanism 5 can be arranged at the bottom of the airtight cavity 1, and the wheel mechanism can be arranged at the top of the airtight cavity 1, while the main shaft 4 of the drive mechanism is fixed on the frame, and the wheel mechanism is connected with the main shaft 4 of the drive mechanism. In addition, it can be understood that an airtight door is provided on the airtight cavity 1 , and the airtight door is in a closed state when the workpiece 7 is being processed.

The turning wheel mechanism (also called fixture) is mainly used to drive the workpiece 7 to revolve under the drive of the driving mechanism, and at the same time drive the workpiece 7 to rotate for more than one revolution in the processing state; in addition, the turning wheel mechanism should be provided along the circumference. The slots of the workpieces 7 are used so that ultrasonic strengthening processing can be performed on multiple workpieces 7 at the same time during the rotation process. It can be understood that when the workpiece 7 is fixed in the slot, since only the part facing the impact area of the abrasive material 8 can be effectively processed during the ultrasonic strengthening process, at least part of the surface of the workpiece 7 should be exposed in the airtight cavity 1 for grinding When the material 8 vibrates, it can impact the surface of the workpiece 7 at high speed so as to realize ultrasonic intensified processing.

In this embodiment, the processing state of the workpiece 7 refers to the state in which the workpiece 7 is located in the airtight cavity 1 and the abrasive material 8 can impact the surface of the workpiece 7 at a high speed. Between the processing angles, the workpiece 7 should rotate at least one revolution at this time, so as to ensure that the entire surface of the workpiece 7 can be ultrasonically strengthened. In the above setting mode, the machined surface is sprayed under control, the enhanced quality controllability is enhanced, and the damage rate is further reduced. The end surface needs to ensure the flatness of the non-processed surface to avoid damage, thereby protecting the non-processed surface and the load bearing of the rolling element. performance.

Specifically, the rotating wheel mechanism may include a solid wheel 2 and a friction wheel 3, the solid wheel 2 is coaxially sleeved on the outside of the friction wheel 3, and a plurality of slots for fixing the workpiece 7 are provided on the solid wheel 2 along the circumferential direction. , the workpiece 7 is in frictional contact with the friction wheel 3 when it is placed in the slot, and the drive mechanism drives the firmware wheel 2 and the friction wheel 3 to rotate at different speeds to drive the workpiece 7 to revolve and rotate.

Further, the friction wheel 3 may include a rigid wheel and a soft friction layer arranged on the surface of the rigid wheel; wherein, the material of the rigid wheel may be hard plastic or metal, and the material of the soft friction layer may be styrene-butadiene rubber. The friction wheel 3 with this structure can provide a larger contact area and greater frictional force, and at the same time facilitate loading and clamping of the workpiece 7 .

The driving mechanism is mainly used to drive the workpiece 7 to revolutionize through the wheel mechanism and to rotate for more than one revolution in the processing state; specifically, the driving mechanism can drive the firmware wheel 2 and the friction wheel 3 to rotate at different speeds through the planetary gear mechanism 6; wherein, the friction wheel 3 can be connected to the driving mechanism through the active part of the planetary gear mechanism 6, and the firmware wheel 2 can be connected to the driving mechanism through the follower of the planetary gear mechanism 6, so that the firmware wheel 2 and the friction wheel 3 can rotate at different speeds. The planetary gear mechanism 6 can realize the speed difference between the firmware wheel 2 and the friction wheel 3, and their respective speeds can be adjusted and designed through the planetary gear ratio.

Specifically, during ultrasonic intensified machining, the firmware wheel 2 can be controlled to rotate in the first direction at an angular velocity ω1, the friction wheel 3 to rotate in the first direction at an angular velocity ω2, and the workpiece 7 to rotate in a second direction opposite to the first direction at an angular velocity ω3 turn. This method can increase the speed difference between the rotation and revolution of the workpiece 7, and it is easy to realize full coverage of the surface processing of the workpiece 7 in the processing area.

The ultrasonic vibration mechanism 5 is mainly used to vibrate the abrasive material 8 in the airtight cavity 1 to impact the workpiece 7 in the slot at high speed; The abrasive 8 placed on it impacts the workpiece 7 directly above it at high speed, resulting in severe plastic deformation, and realizes local strengthening of the surface of the rolling element; the spindle 4 of the driving mechanism drives the workpiece 7 to rotate and revolve, and the local strengthening is homogenized into the whole Strengthening of the rolling surface of the workpiece 7. Due to the use of ultrasonic mechanical vibration to drive the abrasive material 8 to impact the workpiece 7 at high speed, the enhanced processing effect is stable, reliable, high-quality and efficient, and a high-quality plastic strengthening layer can be processed on the surface of the workpiece 7; at the same time, due to the impact of ultrasonic machining technology With strong force and high impact frequency, the processing efficiency is qualitatively improved compared with the traditional drum type, and the energy conversion and energy utilization rate are effectively improved.

The grinding material 8 used in the ultrasonic strengthening process is not strictly limited; specifically, the grinding material 8 can be made of hard balls, grinding powder and grinding liquid according to the mass ratio (14-16): (0.8-1.2): (0.5 -1.0); wherein, the hard ball can be a single-sized ceramic ball or steel ball with a diameter of 0.5-2.5mm and a surface hardness greater than 60HRC, and the grinding powder can be a single-sized brown corundum powder with a particle size of 80-200 meshes. The raw materials are composed of the following mass percentages: 5-10% of phosphate amine salt compound, 3-5% of disodium hydrogen phosphate, 1-2% of ethyl p-hydroxybenzoate, 0.4-0.8% of fatty acid amine, and the rest is water.

In addition, the ultrasonically enhanced machining system for cylindrical roller bearing rolling elements in this embodiment may also include loading and unloading equipment for automatically loading and unloading the workpiece 7; automatic loading and unloading equipment is set to automatically load and unload the workpiece 7, so that the rolling element can be further improved. Ultrasonic enhancement efficiency.

Using the above-mentioned system to perform ultrasonic strengthening processing on the workpiece 7 includes the following steps:

S1: After placing a plurality of workpieces 7 in each slot of the wheel mechanism, fasten the wheel mechanism to the main shaft 4 of the drive mechanism;

S2: Start the driving mechanism and the ultrasonic vibration mechanism 5. The driving mechanism drives the workpiece 7 to revolve through the wheel mechanism and rotate for more than one revolution in the processing state. The ultrasonic vibration mechanism 5 makes the abrasive 8 in the airtight cavity 1 vibrate to impact and fix it on the The workpiece 7 in the slot;

S3: After the workpiece 7 has made one revolution, stop the driving mechanism and the ultrasonic vibration mechanism 5 and unload.

The ultrasonic enhanced machining system for cylindrical roller bearing rolling elements in this embodiment drives a plurality of workpieces 7 to revolve through the drive mechanism and the wheel mechanism, and each workpiece 7 rotates for more than one revolution in the processing state, and at the same time, the ultrasonic vibration mechanism 5 makes the airtight cavity 1 The grinding material 8 in the vibrates and impacts the workpiece 7 in the slot at high speed, which not only has high processing efficiency, but also has high energy conversion and energy utilization, and realizes stable, reliable, high-quality and high-efficiency enhanced processing effects; During the strengthening process, a high-quality plastic deformation strengthening layer can be processed on the surface of the workpiece 7, which is conducive to further improving the lubrication condition of the roller bearing, and provides a technical guarantee for the improvement of the bearing capacity of the rolling bearing.

Example 2

In the method for ultrasonically strengthening the rolling body of a cylindrical roller bearing in this embodiment, the ultrasonic strengthening processing system for the rolling body of a cylindrical roller bearing in Example 1 is used to perform ultrasonic strengthening processing on the workpiece 7, and the specific steps are as follows:

1) Clamp the workpiece 7 (cylindrical roller bearing rolling body) to be processed in the slot of the runner mechanism, and after all the slots of the runner mechanism are filled with workpiece 7, fasten the workpiece 7 on the runner mechanism ;

2) Place the clamped runner mechanism in the slot of the main shaft 4 of the driving mechanism and lock it to complete the clamping of the entire workpiece 7. The main shaft 4 is fixed on the frame, and the slot of the main shaft 4 is located inside the closed cavity 1 , the airtight cavity 1 is a funnel-shaped airtight cavity connected to the frame;

3) After closing the airtight door of the airtight cavity 1, start the main shaft 4 of the drive mechanism, and start the ultrasonic vibration mechanism 5, the ultrasonic vibration mechanism 5 is an existing conventional mechanism, which outputs ultrasonic mechanical vibration through the tool head, and the ultrasonic vibration mechanism 5 The tool head is placed at the bottom of the funnel-shaped airtight cavity 1, and the abrasive material 8 placed on it is driven to hit the workpiece 7 directly above it at high speed, resulting in severe plastic deformation, and the surface of the workpiece 7 is locally strengthened, and the workpiece is driven by the spindle 4 7 Rotation and revolution, homogenize the local strengthening to the strengthening of the rolling surface of the entire workpiece 7;

4) After the firmware wheel 2 of the wheel mechanism rotates once, the controllable ultrasonic strengthening of the surfaces of all workpieces 7 on the entire wheel mechanism is completed. At this time, the ultrasonic vibration mechanism 5 and the driving mechanism are stopped, and the airtight seal of the airtight cavity 1 is opened. door, the next batch of processing can be started by replacing the workpiece 7, and the cycle is like this.

Specifically, the runner mechanism in step 1) is a double-layer composite runner structure, which are respectively the outer layer of the firmware wheel 2 and the inner layer of the friction wheel 3, and the firmware wheel 2 is distributed along the circumferential direction with a plurality of concave The card slot is used to place the workpiece 7. After the workpiece 7 is stuck in the card slot, it contacts the friction wheel 3. The firmware wheel 2 drives the workpiece 7 to revolve. The rotation speed of the friction wheel 3 is different from that of the firmware wheel 2. The friction wheel 3 and the firmware wheel The rotational speed of 2 satisfies the requirement that the workpiece 7 rotates at least one revolution when the workpiece 7 revolutions enters the machinable angle and exits the machinable angle.

The friction wheel 3 is composed of a rigid body and a soft surface fixed on the outer surface of the rigid body. The rigid body is a ring-shaped hard plastic or metal piece, and the soft surface is styrene-butadiene rubber to provide a larger contact area and greater friction. The loading and clamping of the workpiece 7 is convenient while increasing the force.

The rotation speed difference between the firmware wheel 2 and the friction wheel 3 can be realized by the planetary gear mechanism 6; see Fig. 3, the rotation speed is input through the main shaft 4 of the drive mechanism, the shell of the runner mechanism is fixed on the frame by a clamp, and the friction wheel 3 is fixed on the main shaft 4, so its rotational speed is equal to the rotational speed of the main shaft 4, and the firmware wheel 2 is connected to the planet carrier (follower) of the planetary gear mechanism to output the rotational speed, and its speed can be adjusted and designed through the planetary gear ratio. Since only the part facing the impact area of the abrasive material 8 can be effectively processed in the process of ultrasonic intensified machining, the workpiece 7 needs to complete more than one rotation when it is revolving from entering to leaving the effective processing angle (area). Based on this parameter design planetary gear train.

In step 2), the clamping groove of the main shaft 4 can adopt the common conical clamping slot of the existing pneumatic clamp, which is used to realize the fast docking and clamping of the main shaft 43 of the turning wheel mechanism and the driving mechanism. Referring to Fig. 3, the rotational speed of the friction wheel 3 is equal to the rotational speed of the main shaft 4, that is, ω1, and the direction is clockwise; the rotational speed of the firmware wheel 2 is in the same direction as that of the frictional wheel 3, and the rotational speed is ω2; the rotational speed of the workpiece 7 is ω3, and the direction of the rotational speed is It is counterclockwise, this design can increase the speed difference between the rotation and revolution of the workpiece 7, and it is easy to realize the full coverage of the surface processing of the workpiece 7 in the processing area.

In step 3), the grinding material 8 is composed of hard balls, grinding powder, and grinding liquid according to the mass percentage of 15:1:0.8, and the hard balls are single-sized ceramic balls or steel balls with a diameter of 0.5-2.5mm and a surface hardness greater than 60HRC , the grinding powder is brown corundum powder with a particle size of 80-200 mesh, and the grinding liquid is composed of the following raw materials in mass percentage: 8% phosphate amine salt compound, 4% disodium hydrogen phosphate, 1.5% ethyl p-hydroxybenzoate, fatty acid Amine 0.6%, the rest is water.

In order to further improve the ultrasonic strengthening efficiency of the rolling body, automatic equipment can be used to realize automatic loading and unloading of the workpiece 7, and the preferred pneumatic chuck can easily cooperate with automation to quickly complete the automatic replacement of the entire fixture.

The ultrasonic intensified machining method for the cylindrical roller bearing rolling body in this embodiment utilizes ultrasonic mechanical vibration to drive the abrasive 8 to impact the workpiece 7 at high speed, which realizes stable, reliable, high-quality and high-efficiency intensified processing effects, and can process high-quality metal on the surface of the workpiece 7. Plastic deformation strengthening layer; due to the strong impact force and high impact frequency of ultrasonic machining technology, the processing efficiency is qualitatively improved compared with the traditional drum type. Controlled injection, enhanced quality controllability, and further reduced damage rate. The end face needs to ensure the flatness of the non-processed surface to avoid damage and protect the load-bearing performance of the non-processed surface and rolling elements; The micro-textured layer can further improve the lubrication condition of the roller bearing and provide technical support for the improvement of the bearing capacity of the rolling bearing.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (6)

1. The ultrasonic strengthening processing system for the cylindrical roller bearing rolling bodies is characterized by comprising a frame, a rotating wheel mechanism, a driving mechanism and an ultrasonic vibration mechanism, wherein a closed cavity for placing abrasive materials is formed in the frame; the rotating wheel mechanism also comprises a friction wheel, the fixing wheel is coaxially sleeved outside the friction wheel, the workpiece is in friction contact with the friction wheel when placed in the clamping groove, and the driving mechanism drives the fixing wheel and the friction wheel to rotate at different speeds so as to drive the workpiece to revolve and rotate; the friction wheel comprises a rigid wheel and a soft friction layer arranged on the surface of the rigid wheel, wherein the rigid wheel is made of hard plastic or metal, and the soft friction layer is made of styrene-butadiene rubber.

2. The ultrasonic strengthening processing system of the cylindrical roller bearing rolling bodies according to claim 1, wherein the driving mechanism drives the fixing wheel and the friction wheel to rotate at different speeds through the planetary gear mechanism; the friction wheel is connected with the driving mechanism through a driving piece of the planetary gear mechanism, and the firmware wheel is connected with the driving mechanism through a driven piece of the planetary gear mechanism.

3. The ultrasonic strengthening processing system of the cylindrical roller bearing rolling body according to claim 1, wherein the closed cavity is funnel-shaped, the ultrasonic vibration mechanism is arranged at the bottom of the closed cavity, the rotating wheel mechanism is arranged at the top of the closed cavity, the main shaft of the driving mechanism is fixed on the frame, and the rotating wheel mechanism is connected with the main shaft of the driving mechanism.

4. The ultrasonic strengthening processing system of the cylindrical roller bearing rolling bodies according to claim 1, further comprising a handling device for handling the workpiece automatically.

5. An ultrasonic strengthening processing method for a cylindrical roller bearing rolling body is characterized in that the ultrasonic strengthening processing system for the cylindrical roller bearing rolling body is adopted to carry out ultrasonic strengthening processing on a workpiece; the ultrasonic strengthening processing method of the cylindrical roller bearing rolling body comprises the following steps:

s1: after a plurality of workpieces are respectively placed in each clamping groove of the rotating wheel mechanism, the rotating wheel mechanism is fastened on a main shaft of the driving mechanism;

s2: starting a driving mechanism and an ultrasonic vibration mechanism, wherein the driving mechanism drives a workpiece to revolve through a rotating wheel mechanism and rotate for more than one circle in a machining state, and the ultrasonic vibration mechanism vibrates abrasive in a closed cavity to impact the workpiece fixed in the clamping groove;

s3: stopping the driving mechanism and the ultrasonic vibration mechanism and blanking after the workpiece revolves for a circle;

wherein the grinding material consists of hard balls, grinding powder and grinding liquid according to the mass ratio (14-16): (0.8-1.2): (0.5-1.0); wherein, the hard balls are single-size ceramic balls or steel balls with the diameter of 0.5-2.5mm and the surface hardness of more than 60HRC, the grinding powder is single-granularity brown corundum powder with the granularity of 80-200 meshes, and the grinding liquid mainly comprises the following raw materials in percentage by mass: 5-10% of phosphate amine salt compound, 3-5% of disodium hydrogen phosphate, 1-2% of ethyl p-hydroxybenzoate, 0.4-0.8% of fatty acid amine and the balance of water.

6. The ultrasonic strengthening process of cylindrical roller bearing rolling elements according to claim 5, wherein the firmware wheel is controlled to rotate at an angular velocity ω1 in a first direction, the friction wheel is controlled to rotate at an angular velocity ω2 in a first direction, and the workpiece is controlled to rotate at an angular velocity ω3 in a second direction opposite to the first direction.

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