Tapered roller surface cryogenic strengthening grinding machining device

Abstract

The invention relates to the field of tapered roller machining, and provides a tapered roller surface cryogenic strengthening grinding machining device which is characterized by comprising a metal plate box body, and a feeding device, a laser displacement sensor, a controller, a nozzle swing device, a water jet strengthening grinding device, a liquid nitrogen low-temperature treatment device and a planetary roller clamp are connected to the metal plate box body. The machining quality of the tapered roller can be enhanced, the problem that the surface of a traditional enhanced grinding machined roller is not uniform is solved, and grain structures are promoted to be further refined at the low temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of tapered roller processing, and particularly relates to a cryogenic strengthening and grinding processing device for the surface of tapered rollers. Background Art

[0002] The strengthening and grinding technology is a high-performance precision processing technology for metal materials with anti-fatigue, anti-corrosion, and anti-wear properties based on a composite processing method. Its basic principle is to uniformly mix steel balls, grinding powder, and grinding fluid in a certain ratio and combine them with high-pressure gas to form a solid-liquid-gas three-phase mixed flow, which is sprayed onto the surface of the workpiece at a certain angle.

[0003] In past research, it was found that most of the products processed by this method are bearing rings, and there is little involvement in parts such as needle rollers and rollers. Moreover, the strengthening effect on materials with relatively high initial hardness is not obvious, and there is even a weakening phenomenon. Therefore, the present invention aims to solve the problems that traditional strengthening and grinding machines cannot process roller parts and the strengthening effect is not obvious, and proposes and designs a processing device that can be used to process roller parts. Summary of the Invention

[0004] In view of the above technical problems, the present invention aims to provide a cryogenic strengthening and grinding processing device for the surface of tapered rollers. To solve the above technical problems, the present invention adopts the following technical solutions to achieve:

[0005] A cryogenic strengthening and grinding processing device for the surface of tapered rollers includes a sheet metal box body, and a feeding device, a laser displacement sensor, a controller, a nozzle swing device, a water jet strengthening and grinding device, a liquid nitrogen cryogenic treatment device, and a planetary roller fixture are connected to the sheet metal box body.

[0006] Further, the feeding device includes a roller shell and a slide rail. The slide rail is fixedly connected to the sheet metal box body, and the roller shell is slidably connected to the slide rail.

[0007] Further, the roller shell includes a ramp shell. The material discharge port on the ramp shell is provided at one end of the ramp shell, the first discharge port is provided on the side wall of the ramp shell, a T-shaped slider is provided on the side wall of the ramp shell, the ramp shell is slidably connected to the slide rail through the T-shaped slider, and a T-shaped groove is formed on the sheet metal box body, and the ramp shell is slidably connected to the inner wall of the T-shaped groove.

[0008] Further, the nozzle swing device includes a first motor, a camshaft, a first grinding fluid pipeline, a hanging ear, a cam conical slider, a grinding fluid interface, a nozzle pipeline, a hanging spring, a liquid nitrogen pipeline, and a circumferential radial nozzle;

[0009] The first motor is fixedly connected to the sheet metal box body. The camshaft is connected to the rotor of the first motor. A transmission channel is provided on the camshaft. The first grinding fluid pipeline is connected to the sheet metal box body through a hanging spring. The first grinding fluid pipeline is connected to the water jet strengthening grinding device. The liquid nitrogen pipeline is connected to the first grinding fluid pipeline. The circumferential radial nozzle is connected to the junction of the first grinding fluid pipeline and the liquid nitrogen pipeline. The cam conical slider is connected to the circumferential radial nozzle. The cam conical slider is slidably connected to the inner wall of the transmission channel. The liquid nitrogen pipeline is slidably connected to the sheet metal box body.

[0010] Further, the planetary roller fixture includes a second motor, a brush slider, a connecting shaft, a ring planetary carrier, a planetary gear internal gear ring, planetary gears, fixed gears, a protective plate, an electromagnet and a pin shaft;

[0011] The second motor is fixedly connected to the sheet metal box body. The connecting shaft and the brush slider are fixedly connected through a coupling. The brush slider is connected to the rotor of the second motor. The rotation of the connecting shaft is driven by the second motor. The fixed gears, the protective plate and the ring planetary carrier are all connected to the connecting shaft by flat keys. Two or more pin shafts are rotatably connected to the protective plate. All the pin shafts are rotatably connected to the ring planetary carrier. A planetary gear is connected to each pin shaft. The pin shaft and the planetary gear are in interference fit. All the planetary gears are meshed with the fixed gears. All the planetary gears are meshed with the planetary gear internal gear ring. The planetary gear internal gear ring is fixedly connected to the sheet metal box body. The electromagnet is connected to the pin shaft.

[0012] Further, the liquid nitrogen cryogenic treatment device includes a liquid nitrogen storage tank, a valve and a liquid nitrogen pipeline;

[0013] The liquid nitrogen storage tank is connected to the sheet metal box body. The liquid nitrogen pipeline is connected to the liquid nitrogen storage tank. The valve is connected to the liquid nitrogen pipeline;

[0014] The water jet strengthening grinding device includes a grinding fluid storage tank, a second grinding fluid pipeline, a hose, a liquid filling port, an air inlet and a return material port;

[0015] The grinding fluid storage tank is connected to the sheet metal box body. The grinding fluid storage tank is externally connected to an air compressor. The grinding fluid is pressed out of the grinding fluid storage tank by the compressed air of the air compressor;

[0016] The second grinding fluid pipeline, the liquid filling port, the air inlet and the return material port are all connected to the grinding fluid storage tank. The hose is connected to the second grinding fluid pipeline. The first grinding fluid pipeline is connected to the hose.

[0017] Further, the nozzle is provided with a nozzle cover, and two or more nozzle holes are provided on the nozzle cover.

[0018] Further, the controller includes a touch display screen, a servo motor, a connecting arm and a connecting plate. The touch display screen is connected to the servo motor. The connecting arm is connected to the servo motor. The connecting plate is connected to the connecting arm. The connecting plate is connected to the sheet metal box body.

[0019] Further, an emergency stop button, an operation indicator, a stop indicator, and a start button are provided on the touch display screen.

[0020] Further, a grinding fluid recovery hopper and a collection pipe are connected to the sheet metal box body. The grinding fluid recovery hopper is connected to the grinding fluid storage tank. The roller collection port on the collection pipe faces upward, and the second discharge port on the collection pipe communicates with the side wall of the sheet metal box body.

[0021] The present invention has the following beneficial effects:

[0022] It can strengthen the processing quality of tapered rollers and solve the problem of uneven surfaces of rollers in traditional strengthening grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0024] Figure 1 is a schematic structural diagram of a cryogenic strengthening grinding device for the surface of tapered rollers according to the present invention;

[0025] Figure 2 is the present invention Figure 1 an exploded view of the planetary roller fixture;

[0026] Figure 3 is the present invention Figure 1 a connection structure diagram of the camshaft and the circumferential radial spray head;

[0027] Figure 4 is the present invention Figure 1 a schematic structural diagram of the circumferential radial spray head;

[0028] Figure 5 is the present invention Figure 1 a schematic structural diagram of the roller shell;

[0029] Figure 6 is the present invention Figure 1 a connection structure diagram of the liquid nitrogen storage tank, the circumferential radial spray head, and the grinding fluid storage tank;

[0030] Figure 7 is the present invention Figure 1 a schematic structural diagram of the controller;

[0031] Figure 8 is the present invention Figure 3 a rear view of the camshaft.

[0032] Reference numerals: 1, sheet metal box body; 2, grinding fluid storage tank; 3, second grinding fluid pipeline; 4, grinding fluid recovery hopper; 5, hose; 6, hanging spring; 7, control panel; 8, camshaft; 81, transmission channel; 9, liquid nitrogen pipeline; 10, circumferential radial nozzle; 11, planetary roller fixture; 12, roller shell; 13, slide rail; 14, laser displacement sensor; 15, roller collection port; 151, collection pipe; 16, liquid nitrogen valve; 17, second discharge port; 18, liquid nitrogen storage tank; 19, air inlet; 20, liquid filling port;

[0033] 1101, connecting shaft; 1102, ring-shaped planetary carrier; 1103, internal gear ring of planetary gear; 1104, fixed gear; 1105, protective plate; 1106, electromagnet; 1107, tapered roller; 1108, pin shaft; 1109, planetary gear; 1110, brush slider;

[0034] 302, grinding fluid interface; 303, nozzle pipeline; 10, circumferential radial nozzle; 101, nozzle hole; 102, nozzle cover; 103, first grinding fluid pipeline; 104, hanging ear; 105, cam conical slider;

[0035] 1201, blanking port; 1202, ramp housing; 1203, T-shaped slider; 1204, first discharge port;

[0036] 701, emergency stop button; 702, touch display screen; 703, servo motor; 704, connecting arm; 705, connecting plate; 706, operation indication; 707, stop indication; 708, start button. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium; it can be a communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] As Figures 1-8 shown, a cryogenic strengthening and grinding processing device for the surface of tapered roller bearings includes a sheet metal box body 1, and a feeding device, a laser displacement sensor 14, a controller, a nozzle swing device, a water jet strengthening and grinding device, a liquid nitrogen cryogenic treatment device, and a planetary roller fixture 11 are connected to the sheet metal box body 1.

[0041] In an optional embodiment of the present invention, the feeding device includes a roller shell 12 and a slide rail 13. The slide rail 13 is fixedly connected to the sheet metal box body 1, and the roller shell 12 is slidably connected to the slide rail 13.

[0042] In an optional embodiment of the present invention, the roller shell 12 includes a ramp shell 1202. The blanking port 1201 on the ramp shell 1202 is provided at one end of the ramp shell 1202, the first discharge port 1204 is provided on the side wall of the ramp shell 1202, the T-shaped slider 1203 is provided on the side wall of the ramp shell 1202, the ramp shell 1202 is slidably connected to the slide rail 13 through the T-shaped slider 1203, and a T-shaped groove is opened on the sheet metal box body 1, and the ramp shell 1202 is slidably connected to the inner wall of the T-shaped groove.

[0043] In an optional embodiment of the present invention, the nozzle swing device includes a first motor, a camshaft 8, a first grinding fluid pipeline 103, a hanging ear 104, a cam conical slider 105, a grinding fluid interface 302, a nozzle pipeline 303, a hanging spring 6, a liquid nitrogen pipeline 9, and a circumferential radial nozzle 10;

[0044] The first motor is fixedly connected to the sheet metal box body 1, the camshaft 8 is connected to the rotor of the first motor, a transmission channel 81 is opened on the camshaft 8, the first grinding fluid pipeline 103 is connected to the sheet metal box body 1 through the hanging spring 6, the first grinding fluid pipeline 103 is connected to the water jet strengthening and grinding device, the liquid nitrogen pipeline 9 is connected to the first grinding fluid pipeline 103, the circumferential radial nozzle 10 is connected to the junction of the first grinding fluid pipeline 103 and the liquid nitrogen pipeline 9, the cam conical slider 105 is connected to the circumferential radial nozzle 10, and the hanging spring 6 makes the cam conical slider 105 closely slidably connected to the inner wall of the transmission channel 81, and the liquid nitrogen pipeline 9 is slidably connected to the sheet metal box body 1.

[0045] In an alternative embodiment according to the present invention, the planetary roller fixture 11 includes a second motor, a brush slider 1110, a connecting shaft 1101, an annular planetary carrier 1102, a planetary gear internal gear ring 1103, planetary gears 1109, a fixed gear 1104, a protective plate 1105, an electromagnet 1106 and a pin shaft 1108;

[0046] The second motor is fixedly connected to the sheet metal box body 1. The connecting shaft 1101 and the brush slider 1110 are fixedly connected by a coupling. The brush slider 1110 is connected to the rotor of the second motor. The rotation of the connecting shaft 1101 is driven by the second motor. The fixed gear 1104, the protective plate 1105 and the annular planetary carrier 1102 are all connected to the connecting shaft 1101 by flat keys. Two or more pin shafts 1108 are rotatably connected to the protective plate 1105. All the pin shafts 1108 are rotatably connected to the annular planetary carrier 1102. One planetary gear 1109 is connected to each pin shaft 1108. The pin shaft 1108 and the planetary gear 1109 are in interference fit. All the planetary gears 1109 are meshed with the fixed gear 1104. All the planetary gears 1109 are meshed with the planetary gear internal gear ring 1103. The planetary gear internal gear ring 1103 is fixedly connected to the sheet metal box body 1. The electromagnet 1106 is connected to the pin shaft 1108.

[0047] In an alternative embodiment according to the present invention, the liquid nitrogen cryogenic treatment device includes a liquid nitrogen storage tank 18, a liquid nitrogen valve 16 and a liquid nitrogen pipeline 9;

[0048] The liquid nitrogen storage tank 18 is connected to the sheet metal box body 1. The liquid nitrogen pipeline 9 is connected to the liquid nitrogen storage tank 18. The liquid nitrogen valve 16 is connected to the liquid nitrogen pipeline 9;

[0049] The water jet strengthening and grinding device includes a grinding fluid storage tank 2, a second grinding fluid pipeline 3, a hose 5, a liquid filling port 20, an air inlet 19 and a reflux material port;

[0050] The grinding fluid storage tank 2 is connected to the sheet metal box body 1. The grinding fluid storage tank 2 is externally connected to an air compressor. The grinding fluid is pressed out of the grinding fluid storage tank 2 by compressed air from the air compressor;

[0051] The second grinding fluid pipeline 3, the liquid filling port 20, the air inlet 19 and the reflux material port are all connected to the grinding fluid storage tank 2. The hose 5 is connected to the second grinding fluid pipeline 3. The first grinding fluid pipeline 103 is connected to the hose 5.

[0052] In an alternative embodiment according to the present invention, the circumferential radial nozzle 10 is provided with a nozzle cover 102, and two or more nozzle holes 101 are opened on the nozzle cover 102.

[0053] In an alternative embodiment according to the present invention, the controller includes a touch display screen 702, a servo motor 703, a connecting arm 704, and a connecting plate 705. The touch display screen 702 is connected to the servo motor 703, the connecting arm 704 is connected to the servo motor 703, the connecting plate 705 is connected to the connecting arm 704, and the connecting plate 705 is connected to the sheet metal box body 1.

[0054] In an alternative embodiment according to the present invention, an emergency stop button 701, an operation indicator 706, a stop indicator 707, and a start button 708 are provided on the touch display screen 702.

[0055] In an alternative embodiment according to the present invention, a grinding fluid recovery hopper 4 and a collection pipe 151 are connected to the sheet metal box body 1. The grinding fluid recovery hopper 4 is connected to the grinding fluid storage tank 2. The roller collection port 15 on the collection pipe 151 faces upward, and the second discharge port 17 on the collection pipe 151 communicates with the side wall of the sheet metal box body 1.

[0056] Implementation process: The to-be-processed tapered rollers 1107 are sequentially placed into the roller housing 12. Under the action of gravity, the to-be-processed tapered rollers 1107 slide downward along the slope housing 1202. The electromagnet 1106 is energized through the brush sliding brush 1110 to generate magnetism. The roller housing 12 slides precisely to the right under the detection of the laser displacement sensor 14 to the planetary roller fixture 11. The electromagnet 1106 magnetically adsorbs the tapered roller 1107 from the first discharge port 1204, and the tapered roller 1107 is firmly adsorbed on the electromagnet 1106.

[0057] The second motor drives the fixed gear 1104 to rotate clockwise, stops for 1 second every 22.5° to suck the tapered roller 1107 until 16 tapered rollers 1107 are fully sucked to complete the clamping of the tapered roller 1107.

[0058] During the processing, the second motor drives the fixed gear 1104 to rotate at a constant speed. The tapered roller 1107 makes self-rotation and revolution movements driven by the planetary roller fixture 11. The first motor drives the camshaft 8 to rotate. The cam tapered slider 105 is slidably connected to the inner wall of the transmission channel 81. Since the transmission channel 81 is formed in a winding shape on the camshaft 8, the transmission channel 81 drives the cam tapered slider 105 and the circumferential radial spray head 10 to make reciprocating movements along the axial direction of the fixed gear 1104, further realizing the uniform processing of the tapered roller 1107.

[0059] The circumferential radial spray head 10 is arranged at the center of the fixed gear 1104. The spray head cover 102 on the circumferential radial spray head 10 is circumferentially provided with spray holes 101. The grinding fluid is radially sprayed from all the spray holes 101 at the center of the fixed gear 1104 and sprays onto the tapered roller 1107 at the optimal spray angle of 90°.

[0060] When the grinding fluid is ejected, liquid nitrogen is provided by the liquid nitrogen storage tank 18 at the moment of ejection, so that liquid nitrogen is mixed in. It is cooled at low temperature through the liquid nitrogen pipeline 9 to enhance the ejection force, strengthen the grinding process, and refine the crystal grain structure of the tapered roller 1107. Under subsequent low-temperature liquid nitrogen treatment, the crystal grain structure is further refined.

[0061] During the low-temperature deformation process of the tapered roller 1107, the crystal grain size of the material can be refined through dynamic recrystallization. By reducing the stacking fault energy, the tensile strength and plasticity of some face-centered cubic metal materials can be improved simultaneously. Solution nitriding can increase the yield stress of the material, especially at low temperatures, and the effect of grain refinement strengthening is more significant.

[0062] The planetary roller fixture 11 consists of a fixed gear 1104 and 16 planetary gears 1109. The 16 planetary gears 1109 are circumferentially arranged on the fixed gear 1104 with an interval of 22.5°. The planetary gears 1109 revolve around the fixed gear 1104 and rotate on their own axes simultaneously.

[0063] The circular planetary carrier 1102 evenly meshes the planetary gears 1109 with the fixed gear 1104, evenly separates each planetary gear 1109, and maintains the relative movement position. The circular planetary carrier 1102 makes a circular motion together with the planetary gears 1109. There is a distance of 3 to 5 millimeters between the circular planetary carrier 1102 and the planetary gears 1109 to prevent wear.

[0064] The protective plate 1105 covers the planetary gears 1109 and plays a role in protecting the planetary gears 1109 and the fixed gear 1104 when the grinding fluid is sprayed, preventing the grinding powder from getting stuck at the meshing part of the planetary gears 1109 and the fixed gear 1104 and causing obstruction.

[0065] The pin shaft 1108 is press-fitted into the hole on the planetary gear 1109 through the protective plate 1105. An electromagnet 1106 is fixed on the pin shaft 1108. The electromagnet 1106 is powered by a brush slip ring 1110 to achieve the on-off of the magnetism of the electromagnet 1106, so as to achieve the purpose of automatically sucking and clamping the tapered roller 1107. The circular planetary carrier 1102, the fixed gear 1104 and the protective plate 1105 are connected together with the connecting shaft 1101 through flat keys.

[0066] After the processing is completed, the external air compressor stops pumping air, the circumferential radial nozzle 10 stops spraying the grinding fluid, and at the same time, the liquid nitrogen valve 16 is closed. The planetary roller clamping device slides leftward above the roller collection port 15 under the detection of the laser displacement sensor 14. At this time, the electromagnet 1106 is powered off, and all the tapered rollers 1107 lose their magnetism and fall off automatically, flowing out from the second discharge port 17.

[0067] The rotational speed of the planetary roller fixture 11 is adjustable and is connected to the control panel 7. The rotational speed of the planetary roller fixture 11 and the jet intensity of the circumferential radial nozzle 10 can be controlled through the control panel 7.

[0068] The second motor can be a stepper motor.

[0069] The present invention is an improvement on the strengthening grinder. At the same time, liquid nitrogen is mixed when the grinding fluid is ejected, and its temperature can be as low as -196 °C, so that a certain amount of plastic deformation and a strengthening layer with residual compressive stress are generated on the surface of the workpiece, thereby improving the performance of the part. The main component of the grinding fluid is ethylene glycol antifreeze made of distilled water, which greatly reduces the freezing point of the grinding fluid. Under the treatment of low-temperature liquid nitrogen, the grain structure is further refined. During the low-temperature deformation process of the tapered roller 1107, the grain size of the material can be refined by dynamic recrystallization. By reducing the stacking fault energy, the tensile strength and plasticity of some face-centered cubic metal materials can be improved synchronously. Solution nitriding can increase the yield stress of the material. Especially at low temperatures, the effect of grain refinement strengthening at low temperatures is more significant. For parts such as rollers, due to the relatively complex shape, the number of times the surface of the tapered roller 1107 is impacted by the abrasive is different at different positions. Often, due to the complex shape of the roller surface, the spraying time of some parts is too long or the spraying distance is inappropriate, resulting in an unsatisfactory strengthening and grinding effect. The root cause of these problems is that the distance between the abrasive nozzle and the surface of the processed gear is not adjusted in time. The circumferential radial nozzle 10 that can spray liquid radially in the present invention can spray radially during the strengthening and grinding process, ensuring that the jet always sprays towards the tapered roller 1107 at a spraying angle of 90°. Driven by the planetary roller fixture 11, the tapered roller 1107 rotates and revolves synchronously. Coupled with the reciprocating movement of the nozzle driven by the camshaft 8, uniform processing of the roller surface can be achieved.

[0070] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0071] The circumferential radial nozzle 10 and the planetary roller fixture 11 provided by the present invention can always process and strengthen the surface of the tapered roller 1107 at the best vertical incident angle, solving the problem of uneven surface of the traditional strengthening and grinding of the roller;

[0072] The present invention has versatility and high efficiency and can be used for the surface strengthening processing of other types of rollers. At low temperatures, it promotes further refinement of the grain structure. During the low-temperature deformation process of the tapered roller 1107, the grain size of the material can be refined by dynamic recrystallization. By reducing the stacking fault energy, the tensile strength and plasticity of some face-centered cubic metal materials can be improved synchronously. Solution nitriding can increase the yield stress of the material. The low-temperature treatment makes the processing effect more obvious. Under the cryogenic processing in the liquid nitrogen environment, uniform strengthening and modification of the surface of the tapered roller 1107 are realized;

[0073] The structure of the roller shell 12 provided by the present invention reduces manual operation and lowers costs. Through the control of the adaptive system and under the detection of the laser displacement sensor 14, the feeding of the tapered roller 1107 becomes more convenient.

[0074] The components, modules, mechanisms, and devices whose structures are not described in detail in the present invention are all general standard parts or parts known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or by conventional experimental methods.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A cryogenic strengthening grinding device for the surface of tapered roller, characterized in that, It includes a sheet metal box body (1), and a loading device, a laser displacement sensor (14), a controller, a nozzle swing device, a water jet strengthening and grinding device, a liquid nitrogen cryogenic treatment device and a planetary roller fixture (11) are connected to the sheet metal box body (1).

2. The surface cryogenic strengthening and grinding processing device for tapered roller according to claim 1, characterized in that, The loading device includes a roller shell (12) and a slide rail (13). The slide rail (13) is fixedly connected to the sheet metal box body (1), and the roller shell (12) is slidably connected to the slide rail (13).

3. A surface cryogenic strengthening and grinding processing device for tapered roller according to claim 2, characterized in that, The roller shell (12) includes a ramp shell (1202). The material unloading port (1201) on the ramp shell (1202) is arranged at one end of the ramp shell (1202). The first discharge port (1204) is arranged on the side wall of the ramp shell (1202). The T-shaped slider (1203) is arranged on the side wall of the ramp shell (1202). The ramp shell (1202) is slidably connected to the slide rail (13) through the T-shaped slider (1203). A T-shaped groove is formed in the sheet metal box body (1), and the ramp shell (1202) is slidably connected to the inner wall of the T-shaped groove.

4. A surface cryogenic strengthening and grinding processing device for tapered roller according to claim 3, characterized in that, The nozzle swing device includes a first motor, a camshaft (8), a first grinding fluid pipeline (103), a hanging ear (104), a cam conical slider (105), a grinding fluid interface (302), a nozzle pipeline (303), a hanging spring (6), a liquid nitrogen pipeline (9) and a circumferential radial nozzle (10); The first motor is fixedly connected to the sheet metal box body (1). The camshaft (8) is connected to the rotor of the first motor. A transmission channel (81) is formed in the camshaft (8). The first grinding fluid pipeline (103) is connected to the sheet metal box body (1) through the hanging spring (6). The first grinding fluid pipeline (103) is connected to the water jet strengthening and grinding device. The liquid nitrogen pipeline (9) is connected to the first grinding fluid pipeline (103). The circumferential radial nozzle (10) is connected to the junction of the first grinding fluid pipeline (103) and the liquid nitrogen pipeline (9). The cam conical slider (105) is connected to the circumferential radial nozzle (10). The cam conical slider (105) is slidably connected to the inner wall of the transmission channel (81). The liquid nitrogen pipeline (9) is slidably connected to the sheet metal box body (1).

5. The surface cryogenic strengthening grinding device for tapered roller according to claim 4, characterized in that, The planetary roller fixture (11) includes a second motor, a brush slider (1110), a connecting shaft (1101), an annular planetary frame (1102), a planetary gear internal gear ring (1103), a planetary gear (1109), a fixed gear (1104), a protective plate (1105), an electromagnet (1106) and a pin shaft (1108); The second motor is fixedly connected to the sheet metal box body (1). The connecting shaft (1101) and the brush slider (1110) are fixedly connected by a coupling. The brush slider (1110) is connected to the rotor of the second motor. The rotation of the connecting shaft (1101) is driven by the second motor. The fixed gear (1104), the protective plate (1105), and the ring planet carrier (1102) are all connected to the connecting shaft (1101) by flat keys. Two or more pin shafts (1108) are rotatably connected to the protective plate (1105). All the pin shafts (1108) are rotatably connected to the ring planet carrier (1102). A planet gear (1109) is connected to each pin shaft (1108). The pin shaft (1108) and the planet gear (1109) are in interference fit. All the planet gears (1109) are meshed with the fixed gear (1104). All the planet gears (1109) are meshed with the internal gear ring of the planet gear (1103). The internal gear ring of the planet gear (1103) is fixedly connected to the sheet metal box body (1). The electromagnet (1106) is connected to the pin shaft (1108).

6. A deep cryogenic strengthening and grinding processing device for the surface of tapered roller according to claim 5, characterized in that, The liquid nitrogen cryogenic treatment device includes a liquid nitrogen storage tank (18), a valve (16), and a liquid nitrogen pipeline (9); The liquid nitrogen storage tank (18) is connected to the sheet metal box body (1). The liquid nitrogen pipeline (9) is connected to the liquid nitrogen storage tank (18). The valve (16) is connected to the liquid nitrogen pipeline (9); The water jet strengthening and grinding device includes a grinding fluid storage tank (2), a second grinding fluid pipeline (3), a hose (5), a liquid filling port (20), an air inlet (19), and a return material port; The grinding fluid storage tank (2) is connected to the sheet metal box body (1). The grinding fluid storage tank (2) is externally connected to an air compressor. The grinding fluid is pressed out of the grinding fluid storage tank (2) by compressed air from the air compressor; The second grinding fluid pipeline (3), the liquid filling port (20), the air inlet (19), and the return material port are all connected to the grinding fluid storage tank (2). The hose (5) is connected to the second grinding fluid pipeline (3). The first grinding fluid pipeline (103) is connected to the hose (5).

7. A surface cryogenic strengthening and grinding processing device for tapered roller according to claim 6, characterized in that, The nozzle (10) is provided with a nozzle cover (102). Two or more nozzle holes (101) are opened on the nozzle cover (102).

8. A surface cryogenic strengthening and grinding processing device for tapered roller according to claim 7, characterized in that, The controller includes a touch display screen (702), a steering gear (703), a connecting arm (704), and a connecting plate (705). The touch display screen (702) is connected to the steering gear (703). The connecting arm (704) is connected to the steering gear (703). The connecting plate (705) is connected to the connecting arm (704). The connecting plate (705) is connected to the sheet metal box body (1).

9. A surface cryogenic strengthening and grinding device for tapered roller according to claim 8, characterized in that, The touch display screen (702) is provided with an emergency stop button (701), an operation indicator (706), a stop indicator (707), and a start button (708).

10. A surface cryogenic strengthening and grinding processing device for tapered roller, characterized in that, The sheet metal box body (1) is connected with a grinding fluid recovery hopper (4) and a collecting pipe (151). The grinding fluid recovery hopper (4) is connected to the grinding fluid storage tank (2). The roller collecting port (15) on the collecting pipe (151) faces upward. The second discharge port (17) on the collecting pipe (151) communicates with the side wall of the sheet metal box body (1).

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