CN110846484A - A kind of enhanced grinding equipment for processing bearing inner ring raceway - Google Patents

Abstract

The invention discloses a reinforced grinding device for processing a bearing inner ring raceway, comprising a reinforced processing module and a circulating feeding module. The material module includes a high-speed nozzle, a mixed conveying pipeline, and a hybrid power mechanism; the hybrid power mechanism includes a feed pipe, a feed hopper, a discharge pipe, two high-pressure pumping cylinders and a switching drive mechanism, the high-pressure pumping cylinder includes a storage tank. A material cylinder body and a pushing hydraulic cylinder, the pushing piston of the pushing hydraulic cylinder extends into the inner cavity of the material storage cylinder body; the end of the material storage cylinder body extends into the feeding hopper, the feeding pipeline and the discharging pipeline One end is communicated with the mixing pipeline, and the other end extends into the hopper. The intensified grinding equipment can not only realize high-pressure and fast transportation, but also has a small pressure loss during transportation, which can effectively ensure the processing quality of the raceway of the inner ring of the bearing.

Description

A kind of enhanced grinding equipment for processing bearing inner ring raceway

technical field

The invention relates to a reinforced grinding processing device, in particular to a reinforced grinding device used for processing a bearing inner ring raceway.

Background technique

With the rapid development of modern industrial technology, all walks of life have higher and higher requirements on the safety, reliability, performance and life of mechanical equipment, such as automobiles, robots, internal combustion engines, ships, metallurgical machinery, coal mining machinery, etc. Among them, bearings are indispensable The rotating load-bearing body is widely used in modern machinery and equipment, and is called a mechanical joint by the machinery industry. Bearing failure will not only cause property damage, but may also lead to a large number of casualties, so it is of great significance to improve the fatigue life of bearings.

The existing intensified grinding machine adopts a direct pressurized processing method, such as a bearing intensified grinding machine disclosed by the application publication number CN104942664A, which directly mixes the intensified grinding material and the intensified grinding liquid through high-pressure gas. It is transported to the nozzle to process the workpiece. Although the above strengthening grinder can automatically complete the strengthening process, and has the advantages of simple structure and convenient control, it still has the following shortcomings:

In the above-mentioned grinding machine, high-speed injection mainly relies on high-pressure gas. First, a huge negative pressure is generated at the place where the abrasive is placed, and the abrasive is sucked into the high-pressure gas, so that the high-pressure gas is pushed from the nozzle to the bearing at high speed. raceway. Among them, in the process of pipeline transportation, the pressure loss of high-pressure gas is relatively large, which will cause the pressure at the end of the transportation to be far less than the predetermined pressure output at the head end, which will not only waste a lot of energy, but also make the bearing raceway processing effect. Failed to meet pre-order requirements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned problems, and provide a kind of enhanced grinding equipment for processing the bearing inner ring raceway. To ensure the processing quality of the raceway of the inner ring of the bearing.

The object of the present invention is achieved through the following technical solutions:

An intensified grinding device for processing a bearing inner ring raceway, comprising an intensified processing module and a circulating feeding module, the intensified processing module includes a mixing hopper, a processing box and a rotary clamping mechanism, and the mixing hopper is arranged and communicated with On one side of the processing box; the rotary clamping mechanism includes a clamping mechanism for clamping the bearing and a rotary driving mechanism for driving the clamping mechanism to rotate;

Wherein, the circulating feeding module includes a high-speed nozzle, a mixed conveying pipeline and a hybrid power mechanism. One end of the mixed conveying pipeline is connected to the bottom of the processing box, and the other end is connected to the high-speed nozzle, and the high-speed nozzle is arranged in the processing box. The hybrid power mechanism is arranged at one end of the mixing conveying pipe near the bottom of the processing box; the hybrid power mechanism includes a feeding pipe, a feeding hopper, a discharging pipe, two high-pressure pumping cylinders, and a device for driving the discharging A switching drive mechanism in which the pipes are alternately communicated with two high-pressure pumping cylinders, the high-pressure pumping cylinders include a storage cylinder for temporarily storing mixed abrasives and a high-speed push for the mixed abrasives in the storage cylinders For the pushing hydraulic cylinder that goes out, the end of the storage cylinder extends into the feeding hopper, one end of the feeding pipeline is communicated with the mixing conveying pipeline, and the other extends into the feeding hopper; one end of the discharging pipeline extends to the into the hopper, and the other end is communicated with the mixing conveying pipeline; the pushing piston of the pushing hydraulic cylinder extends into the inner cavity of the material storage cylinder and cooperates with the inner cavity wall of the material storage cylinder.

The working principle of the above strengthening grinding equipment is:

When working, firstly clamp the bearing to be processed on the clamping mechanism, adjust the angle of the high-speed nozzle so that the nozzle faces the surface of the bearing raceway; put the mixed abrasive (steel ball and grinding powder) on the mixing hopper, Turn on the switch of the mixing hopper, so that the mixed grinding material falls to the bottom of the processing box; start the hybrid mechanism, the discharge pipeline is connected to one of the high-pressure pumping cylinders, and the storage cylinder in the other high-pressure pumping cylinder The push piston moves in the opposite direction of push, and the mixed abrasive is sucked into the material storage cylinder through the feeding pipeline. When the storage cylinder is filled with the mixed grinding material, the switching drive mechanism drives the discharge pipe to communicate with the storage cylinder, and under the drive of the push hydraulic cylinder, the push piston rapidly mixes and grinds the mixed grinding material in the storage cylinder. The material is pushed out, so that the mixed grinding material obtains huge kinetic energy, so that it can move forward along the mixing conveying pipeline at high speed, and is ejected from the high-speed nozzle, and violently hits the bearing raceway, so that the surface of the bearing raceway is relatively Large residual compressive stress is beneficial to improve the mechanical properties and life of the bearing. At the same time, the feeding port of the other storage cylinder is opened in the feeding hopper, and the push piston in the storage cylinder moves in the opposite direction of the push, filling the mixed grinding material into the other storage cylinder, Be ready to deliver. Among them, with the continuous switching of the discharge pipeline, the two high-pressure pumping cylinders alternately and alternately push the mixed abrasive forward, thereby forming a high-pressure and continuous jet flow, and continuously cyclically transporting the mixed abrasive. until the strengthening process is completed.

A preferred solution of the present invention further includes a separation and recovery module, the separation and recovery module includes a cleaning and separation module for classifying and recovering the mixed abrasive and a drying module for drying the classified steel balls.

Preferably, the cleaning and separation module includes a separation mechanism and a separation mechanism, the separation mechanism includes a separation box and a plurality of separation plates arranged in the separation box, and the plurality of separation plates are arranged alternately up and down on two of the separation boxes. on the opposite inner wall; the head end of the detachment plate is fixedly connected to the inner wall of the detachment box body, and the end extends obliquely downward to a position beyond the vertical centerline of the detachment box body; wherein, the end extension line of the upper detachment plate The position of the intersection point with the inner wall of the separation box is higher than the position of the connection point between the head end of the adjacent separation plate located below and the inner wall of the separation box; the separation box is arranged below the processing box, and its top A recovery pipeline communicated with the bottom opening of the processing box and a cleaning pipeline for introducing cleaning liquid are provided, the bottom of which is provided with a discharge port; a recovery switch is arranged on the recovery pipeline;

The separation mechanism includes a separation box and a separation screen, the separation box is arranged below the discharge port, and the separation screen is obliquely arranged on the top of the separation box; wherein, the net of the separation screen is The pore size is smaller than the size of the steel balls in the mixed abrasive and larger than the size of the grinding powder in the mixed abrasive. Through the above structure, when the strengthening process is completed, the mixed abrasive (the grinding powder adheres to the surface of the steel ball) is all collected at the bottom of the processing box, and the recovery switch of the recovery pipeline is turned on, so that the mixed abrasive falls into the separation box. , in which, since a plurality of detachment plates are arranged on two opposite inner walls in the detachment box, the mixed abrasives will "jump" and fall from the relatively staggered detachment plates in turn. Here, the "jumping" During the process, the steel balls will hit the release plate one by one, so that the steel balls themselves will continuously vibrate, so that the adhered grinding powder will be shaken off. Not only this, because the intersection point of the extension line of the end of the detachment plate located above and the inner wall of the detachment box is located higher than the position of the connection point between the head end of the adjacent detachment plate located below and the inner wall of the detachment box, and The end of the detachment plate extends downward obliquely to the position beyond the vertical centerline of the detachment box, so as to ensure that each detachment plate has a long enough rolling distance, so that the steel ball can roll sufficiently, from top to bottom, The steel balls roll down successively on a plurality of release plates, and during this process, the grinding powder is gradually separated from the steel balls. At the same time, the cleaning liquid is passed through the top cleaning pipe detached from the box to clean the mixed abrasive falling from the detached box to further accelerate the separation of the steel balls and the grinding powder; in addition, the detached grinding powder can also be removed from the The plate is washed down, and it enters the separation box through the mesh of the separation screen.

Further, the separating box is provided with baffles placed obliquely.

Preferably, the drying module includes a drying coil for drying the steel balls by supplying a high-frequency current, a guide plate for guiding the steel balls to move down, and a recovery box for collecting the steel balls, one end of the guide plate extending to The discharge end of the steel balls of the cleaning and separation module, and the other end extends into the recovery box; the drying coil surrounds the outer side of the guide plate along the extending direction of the guide plate. Through the above structure, not only can the steel balls be quickly dried to avoid rusting of the steel balls, but also has the advantages of simple structure and the like.

Further, the guide plate is made of a high temperature resistant and non-conductive material.

In a preferred solution of the present invention, one end of the mixing conveying channel close to the high-speed nozzle is connected with a high-pressure pipeline for supplying high-pressure gas, and using high-pressure gas for auxiliary transportation can further accelerate the moving speed of the mixed abrasive.

Compared with the prior art, the present invention has the following beneficial effects:

1. Different from the traditional high-pressure gas conveying method, in the enhanced grinding equipment of the present invention, the pushing method directly acting on the mixed abrasive is adopted, that is, the high-speed and high-pressure pushing force is directly pushed in the direction of the jet, which can reduce the amount of conveying. The capacity loss in the process can effectively ensure the processing quality of the raceway of the inner ring of the bearing.

2. In the process of conveying, it is directly pushed forward in the mixed conveying pipeline, which can effectively reduce the phenomenon of pipeline blockage.

Description of drawings

FIG. 1 is a schematic diagram of the structure of the enhanced grinding equipment for processing the raceway of the inner ring of the bearing according to the present invention.

FIG. 2 is a front view of the hybrid mechanism in the present invention.

FIG. 3 is a schematic diagram of the three-dimensional structure of the hybrid power mechanism in the present invention.

Detailed ways

In order to make the technical solutions of the present invention well understood by those skilled in the art, the present invention will be further described below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

Referring to FIG. 1 , the enhanced grinding equipment for processing the bearing inner ring raceway in this embodiment includes an enhanced processing module, a circulating supply module and a separation and recovery module, and the separation and recovery module includes a separation and recovery module for classifying and recycling mixed abrasives The cleaning and separation module and the drying module for drying the sorted steel balls. The strengthening processing module includes a mixing hopper 1, a processing box 2 and a rotary clamping mechanism. The mixing hopper 1 is arranged and communicated on one side of the processing box 2; a The electromagnetic centerless clamp for clamping and the rotary drive mechanism for driving the electromagnetic centerless clamp to rotate. Specifically, for the clamping method of the electromagnetic centerless clamp in this embodiment, reference may be made to the prior art of electromagnetic clamps, such as a bearing reinforced grinding machine disclosed in the invention patent with the authorization announcement number CN 104942664 B and the application publication number CN The related art of an enhanced grinding processing method of a gear-toothed workpiece disclosed in the invention application of 109176318 A. In addition, the rotation driving mechanism includes a rotation driving motor, a transmission rod, etc., and the specific structure may refer to the technical means for realizing rotation in the prior art.

Referring to 1-3, the circulating feeding module includes a high-speed nozzle 3, a mixing and conveying pipe 4 and a hybrid mechanism 5. One end of the mixing and conveying pipe 4 is connected to the bottom of the processing box 2, and the other end is connected to the high-speed nozzle 3. , the high-speed nozzle 3 is arranged in the processing box 2; the hybrid mechanism 5 is arranged at one end of the mixing conveying pipe 4 close to the bottom of the processing box 2; the hybrid mechanism 5 includes a feeding pipe 5-1, A hopper 5-2, a discharge pipeline 5-3, two high-pressure pumping cylinders, and a switching drive mechanism for driving the discharge pipeline 5-3 to communicate with the two high-pressure pumping cylinders alternately, the high-pressure pumping cylinders Including a material storage cylinder 5-4 for temporarily storing mixed abrasives and a push hydraulic cylinder 5-5 for pushing out the mixed abrasives in the storage cylinder 5-4 at high speed, the material storage cylinder 5 The end of -4 extends into the feeding hopper 5-2, one end of the feeding pipeline 5-1 is communicated with the mixing and conveying pipeline 4, and the other extends into the feeding hopper 5-2; One end extends into the feeding hopper 5-2, and the other end communicates with the mixing and conveying pipeline 4; the pushing piston of the pushing hydraulic cylinder 5-5 extends into the inner cavity of the material storage cylinder 5-4. Specifically, the two storage cylinders 5-4 are arranged in parallel and extend into the hopper 5-2, the switching drive mechanism drives the discharge pipe 5-3 to rotate, and the two storage cylinders 5- The discharge port of 4 is switched back and forth; wherein, the switching drive mechanism can adopt the structure in the prior art that can realize automatic pipe switching.

Referring to 1, the cleaning and separation module includes a separation mechanism and a separation mechanism, the separation mechanism includes a separation box 6 and a plurality of separation plates 7 disposed in the separation box 6 obliquely downward, and the plurality of separation plates 7 are staggered up and down It is arranged on two opposite inner walls of the detachment box 6; the head end of the detachment plate 7 is fixedly connected to the inner wall of the detachment box 6, and the end extends obliquely downward to exceed the vertical centerline of the detachment box 6. position; wherein, the position of the intersection of the extension line of the end of the detachment plate 7 located above and the inner wall of the detachment box 6 is higher than the connection point between the head end of the adjacent detachment plate 7 located below and the inner wall of the detachment box 6 The detachment box 6 is arranged below the processing box 2, and its top is provided with a recovery pipe 8 that communicates with the bottom opening of the processing box 2 and a cleaning pipe 9 for introducing cleaning liquid, and its bottom is provided with The discharge port; the recycling pipe 8 is provided with a recycling switch; the separation mechanism includes a separation box 10 and a separation screen 11, the separation box 10 is arranged below the discharge port, and the separation screen 11 It is arranged obliquely on the top of the separation box 10; wherein, the mesh size of the separation screen 11 is smaller than the size of the steel balls in the mixed grinding material, and larger than the size of the grinding powder in the mixed grinding material. Through the above structure, when the strengthening process is completed, all the mixed abrasives are collected at the bottom of the processing box 2, and the recovery switch of the recovery pipe 8 is turned on, so that the mixed abrasives fall into the detachment box 6, wherein due to the multiple detachment plates 7 is inclined downward on the two opposite inner walls of the detachment box 6, so the mixed abrasive will "jump" and fall from the relatively staggered detachment plates 7 in turn. It will impact on the release plate 7 in turn, so that the steel ball itself will continuously vibrate, so as to shake off the adhered grinding powder. Not only this, because the intersection point of the extension line of the end of the escape plate 7 located above and the inner wall of the escape box 6 is located higher than the connection point between the head end of the adjacent escape plate 7 located below and the inner wall of the escape box 6 position, and the end of the detachment plate 7 extends obliquely downward to a position that exceeds the vertical centerline of the detachment box 6, so as to ensure that each detachment plate 7 has a long enough rolling distance, so that the steel ball can be fully Rolling, from top to bottom, the steel balls are rolled down on the plurality of release plates 7 in turn, and during this process, the grinding powder will gradually be separated from the steel balls. At the same time, the top cleaning pipe 9 detached from the box body 6 is passed into the cleaning liquid to clean the mixed abrasive falling from the detachment box 6 to further accelerate the separation of the steel balls and the grinding powder; The powder is washed off from the separation plate 7 and enters the separation box 10 through the meshes of the separation screen 11 .

Further, the separating box 10 is provided with baffles placed obliquely.

Referring to 1, the drying module includes a drying coil 12 for drying the steel balls by supplying a high-frequency current, a guide plate 13 for guiding the steel balls to move down, and a recovery box 14 for collecting the steel balls, the guide plate 13 One end extends to the steel ball discharge end of the cleaning and separation module, and the other end extends into the recovery box 14 ; the drying coil 12 surrounds the outer side of the guide plate 13 along the extending direction of the guide plate 13 . Through the above structure, not only can the steel balls be quickly dried to avoid rusting of the steel balls, but also has the advantages of simple structure and the like. Further, the guide plate 13 is made of a high temperature resistant and non-conductive material.

Referring to 1, one end of the mixing conveying channel close to the high-speed nozzle 3 is connected with a high-pressure pipeline 15 for supplying high-pressure gas. Using high-pressure gas for auxiliary conveying can further accelerate the moving speed of the mixed abrasive.

Referring to 1-3, the working principle of the enhanced grinding equipment in this embodiment is:

When working, first clamp the bearing inner ring a to be processed on the clamping mechanism, adjust the angle of the high-speed nozzle 3 so that the nozzle faces the raceway surface of the bearing inner ring a; mix the abrasive (steel balls and grinding powder) ) on the mixing hopper 1, turn on the switch of the mixing hopper 1, so that the mixed grinding material falls to the bottom of the processing box 2; start the hybrid mechanism 5, and the mixed grinding material can be passed through the feeding pipeline through the additional suction mechanism. 5-1 is sent to the feeding hopper 5-2, and at this time, the discharging pipeline 5-3 is connected with one of the high-pressure pumping cylinders, and the pushing piston in the storage cylinder 5-4 in the other high-pressure pumping cylinder Move in the opposite direction of pushing to suck the mixed abrasive into the storage cylinder 5-4. When the material storage cylinder 5-4 is filled with the mixed abrasive, the switching drive mechanism drives the discharge pipe 5-3 to communicate with the material storage cylinder 5-4, and under the drive of the pushing hydraulic cylinder 5-5, the pushing piston The mixed grinding material in the storage cylinder 5-4 is quickly pushed out, so that the mixed grinding material obtains huge kinetic energy, so that it can move forward along the mixing conveying pipe 4 at a high speed, and is sprayed from the high-speed nozzle 3, The violent impact on the raceway of the bearing inner ring a makes the raceway surface of the bearing inner ring a obtain a large residual compressive stress, which is beneficial to improve the mechanical performance and life of the bearing inner ring a. At the same time, the feeding port of another material storage cylinder 5-4 is exposed in the feeding hopper 5-2, and the push piston in the material storage cylinder 5-4 moves in the opposite direction of pushing to charge the mixed grinding material. Into another material storage cylinder 5-4, ready for feeding. Among them, with the continuous switching of the discharge pipeline 5-3, the two high-pressure pumping cylinders alternately and alternately push the mixed abrasive forward, thereby forming a high-pressure and continuous jet flow, which continuously circulates the mixed abrasive. Conveying is carried out until the strengthening process is completed.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned content, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention, All should be equivalent replacement modes, which are all included in the protection scope of the present invention.

Claims (7)

1. The reinforced grinding equipment for machining the raceway of the inner ring of the bearing is characterized by comprising a reinforced machining module and a circulating feeding module, wherein the reinforced machining module comprises a mixing hopper, a machining box body and a rotary clamping mechanism, and the mixing hopper is arranged on and communicated with one side of the machining box body; the rotary clamping mechanism comprises a clamping mechanism for clamping the bearing and a rotary driving mechanism for driving the clamping mechanism to rotate;

the circular feeding module comprises a high-speed spray head, a mixing and conveying pipeline and a mixing power mechanism, wherein one end of the mixing and conveying pipeline is connected to the bottom of the processing box body, the other end of the mixing and conveying pipeline is connected with the high-speed spray head, and the high-speed spray head is arranged in the processing box body; the hybrid power mechanism is arranged at one end of the hybrid conveying pipeline close to the bottom of the processing box body; the high-pressure pumping cylinders comprise a material storage cylinder body for temporarily storing mixed abrasive and a pushing hydraulic cylinder for pushing the mixed abrasive in the material storage cylinder body out at high speed, the tail end of the material storage cylinder body extends into the feeding hopper, one end of the feeding pipeline is communicated with the mixing and conveying pipeline, and the other end of the feeding pipeline extends into the feeding hopper; one end of the discharge pipeline extends into the feeding hopper, and the other end of the discharge pipeline is communicated with the mixing and conveying pipeline; and a pushing piston of the pushing hydraulic cylinder extends into an inner cavity of the material storage cylinder body and is matched with the wall of the inner cavity of the material storage cylinder body.

2. The reinforced grinding equipment for processing the inner ring raceway of the bearing as claimed in claim 1, further comprising a separation and recovery module, wherein the separation and recovery module comprises a cleaning and separation module for classifying and recovering the mixed abrasives and a drying module for drying the classified steel balls.

3. The reinforced grinding equipment for machining the bearing inner ring raceway as claimed in claim 2, wherein the cleaning and separating module comprises a disengaging mechanism and a separating mechanism, the disengaging mechanism comprises a disengaging box body and a plurality of disengaging plates arranged in the disengaging box body, and the plurality of disengaging plates are arranged on two opposite inner walls of the disengaging box body in an up-and-down staggered manner; the head end of the separation plate is fixedly connected to the inner wall of the separation box body, and the tail end of the separation plate obliquely extends downwards to a position exceeding the vertical central line of the separation box body; the position of the intersection point of the tail end extension line of the upper separation plate and the inner wall of the separation box body is higher than the position of the connection point of the head end of the lower adjacent separation plate and the inner wall of the separation box body; the separation box body is arranged below the processing box body, the top of the separation box body is provided with a recovery pipeline communicated with an opening at the bottom of the processing box body and a cleaning pipeline used for introducing cleaning liquid, and the bottom of the separation box body is provided with a discharge hole; a recovery switch is arranged on the recovery pipeline;

the separation mechanism comprises a separation box body and a separation screen, the separation box body is arranged below the discharge port, and the separation screen is obliquely arranged at the top of the separation box body; wherein the mesh size of the separation screen is smaller than the size of steel balls in the mixed grinding material and larger than the size of grinding powder in the mixed grinding material.

4. The reinforced grinding apparatus for machining a raceway of a bearing inner race of claim 3, wherein a baffle plate is disposed in the separator box in an inclined arrangement.

5. The reinforced grinding equipment for processing the raceway of the inner ring of the bearing as claimed in claim 2, wherein the drying module comprises a drying coil for passing high-frequency current to dry the steel balls, a guide plate for guiding the steel balls to move downwards and a recovery box for collecting the steel balls, one end of the guide plate extends to a steel ball discharging end of the cleaning and separating module, and the other end of the guide plate extends into the recovery box; the drying coil is wound around the outside of the guide panel along the extending direction of the guide panel.

6. The apparatus of claim 5, wherein the guide plate is made of a material that is resistant to high temperatures and electrically non-conductive.

7. The reinforced grinding equipment for machining the bearing inner ring raceway as claimed in claim 1, wherein one end of the mixing and conveying channel near the high-speed nozzle is communicated with a high-pressure pipeline for providing high-pressure gas.

Images