CN117620627B - Production process of cylindrical roller bearing - Google Patents

Abstract

The invention relates to the field of bearing production, in particular to a production process of a cylindrical roller bearing, which comprises the following steps of: cutting the metal tube into a plurality of inner metal sections and outer metal sections; respectively heating the electromagnetic induction coils; and (3) forming: the first forming wheel and the second forming wheel roll two sides of the inner metal section and the outer metal section to a set shape; grinding: respectively grinding the end surfaces of the inner molding piece and the outer molding piece; grinding the inner and outer surfaces of the inner molding member to form an inner ring and grinding the inner and outer surfaces of the outer molding member to form an outer ring; assembling: rollers are arranged in the outer ring, a retainer main body is inserted between the rollers, and a retainer bottom ring is arranged in the retainer main body; an inner ring is arranged in the outer ring. The problem that the machining allowance is large in the existing scheme, and the surface quality of the outer ring and the inner ring is poor is solved. Multiple clamping is required in the machining process, so that errors among the clamping are larger, and machining errors are larger. If the automatic assembly is adopted during the assembly, the retainer cannot be assembled.

Description

Production process of cylindrical roller bearing

Technical Field

The invention relates to the field of bearing production, in particular to a production process of a cylindrical roller bearing.

Background

Cylindrical roller bearings are generally capable of withstanding high loads and are capable of withstanding high-speed rotation, and have low running friction. The cylindrical roller bearing comprises an outer ring, an inner ring, a retainer and rollers. When the outer ring and the inner ring are processed, the raw materials are heated and then processed in a stamping mode, and then cooled to form a cylindrical structure, and the cylindrical structure is vertically penetrated. And then machining the preset size and shape by a machining mode. And then the outer ring, the inner ring, the retainer and the rollers are assembled in a manual assembly mode.

The assembly process also has automatic assembly, but only the assembly among the inner ring, the outer ring and the rollers can be completed, and grooves are not formed on the outer ring and the inner ring. The inner ring is often eccentrically mounted in the outer ring, after which the rollers are mounted, after which the cage is mounted. Since the rollers are mounted between the inner ring and the outer ring only by eccentrically mounting the inner ring in the outer ring, the number of rollers to be mounted is small, the intervals between the rollers are also different, and the cage cannot be mounted.

In the traditional scheme, the outer ring and the inner ring are machined by adopting a mode of punching and then machining, so that machining allowance is large, and the surface quality of grooves or inclined surfaces machined on the outer ring and the inner ring is poor. And in the machining process, the surface machining can be completed only by clamping for a plurality of times, so that the error between the clamping is larger, and the machining error is larger. Meanwhile, the manual mode is adopted for assembly, so that the assembly efficiency is low, and if automatic assembly is adopted, the retainer cannot be assembled. How to solve this problem becomes important.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a production process of a cylindrical roller bearing, which aims to solve the problems that in the prior art, a mode of punching before machining is adopted, so that the machining allowance is large, and the surface quality of grooves or inclined surfaces machined on an outer ring and an inner ring is poor. And in the machining process, the surface machining can be completed only by clamping for a plurality of times, so that the error between the clamping is larger, and the machining error is larger. Meanwhile, the manual mode is adopted for assembly, so that the assembly efficiency is low, and if the automatic assembly is adopted, the problem that the retainer cannot be assembled is solved.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

a production process of a cylindrical roller bearing;

When the cylindrical roller bearing is produced, the method comprises the following steps of the production process:

The preparation step comprises the following steps: cutting metal pipes with different diameters and thicknesses into a plurality of inner metal sections and outer metal sections; respectively heating the inner metal section and the outer metal section by electromagnetic induction coils;

And (3) forming: the inner metal section and the outer metal section are respectively arranged in each forming device; the first forming wheel and the second forming wheel roll two sides of the inner metal section and the outer metal section into set shapes to form an inner forming piece and an outer forming piece;

Grinding: respectively grinding the end surfaces of the inner molding piece and the outer molding piece; grinding the inner and outer surfaces of the inner molding member to form an inner ring and grinding the inner and outer surfaces of the outer molding member to form an outer ring;

Assembling: the outer ring is arranged on a conveying frame to finish conveying; on one side of the outer ring, the assembling rod adsorbs the roller and moves to the outer ring, the assembling rod blows out gas to expand the copper sleeve, and the gas and the copper sleeve push the roller into the outer ring; the first clamping jaw is arranged in the retainer main body between the rollers; the conveying rod is arranged in the inner ring at the other side of the outer ring, and the first sucker moves into the retainer bottom ring to mutually lock the retainer bottom ring and the retainer main body;

In the assembling step, the assembling rod has two blowing processes:

A first blowing process: the assembly rod blows a certain amount of gas, the gas pushes the roller outwards and pushes the copper sleeve to expand outwards, and the roller is arranged in a groove on the inner surface of the outer ring;

And a second blowing process: the amount of air blown out of the assembly rod is reduced by 35% -55%, the air pushes the roller outwards, and the copper sleeve stops expanding outwards.

The further technical scheme is as follows: the preparation step is preceded by a modeling step:

The control device models according to the size and shape of the inner ring and the outer ring to obtain final model data, adds grinding allowance on the final model data to obtain intermediate model data, and adds rolling deformation on the intermediate model data to obtain initial material model data.

The further technical scheme is as follows: the modeling step and the material preparation step further comprise a calculating step:

The control device determines the diameter, thickness and cutting interval of the metal tube in the material preparation step according to the initial material model data; determining the shape, the size and the rolling deformation of the first forming wheel and the second forming wheel in the forming step according to the intermediate model data; and determining the shape, the size and the grinding amount of the grinding wheel for grinding in the grinding step according to the final model data.

The further technical scheme is as follows:

In the material preparation step: a plurality of metal tubes stacked on the cutting device; the second power device presses down the fixed metal tube, and the cutting equipment cuts the metal tube into a plurality of inner metal sections or outer metal sections; the first power device pushes the inner metal section or the outer metal section into the vibration disc; the vibrating tray conveys the inner metal section or the outer metal section to the heating device.

The further technical scheme is as follows:

In the material preparation step: the inner metal section or the outer metal section is arranged in the conveying channel; the third power device pushes the inner metal section or the outer metal section to move along the conveying channel; the electromagnetic induction coil device heats the inner metal section or the outer metal section.

The further technical scheme is as follows:

In the forming step: the clamping device moves the inner metal section or the outer metal section into the forming position; the second forming wheel is close to and contacts with the outer surface of the inner metal section or the outer surface of the outer metal section; the driving mechanism drives the first forming wheel to approach and contact the inner surface of the inner metal section or the inner surface of the outer metal section; the driving mechanism drives the first forming wheel to rotate and move to finish rolling of the inner metal section or the outer metal section; after the inner metal section or the outer metal section is rolled into the inner molding piece or the outer molding piece, the clamping device moves the inner molding piece or the outer molding piece out of the molding position.

The further technical scheme is as follows:

In the grinding step: the first grinding wheel grinds the end face of the inner molding member or the end face of the outer molding member; the first clamping mechanism clamps the outer surface of the inner molding piece or the outer surface of the outer molding piece; grinding the inner surface of the inner molded part and the inner surface of the outer molded part by a second grinding wheel; the first clamping mechanism is used for switching and clamping the inner surface of the inner molding piece or the inner surface of the outer molding piece; grinding the outer surface of the inner molded part and the outer surface of the outer molded part by a third grinding wheel; the inner molding piece or the outer molding piece is ground to form an inner ring or an outer ring.

The further technical scheme is as follows:

the amount of the gas blown out by the assembly rod in the first blowing process and the expansion degree of the copper bush are positively related to the size of the outer ring; the deeper the depth of the groove on the inner surface of the outer ring is, the larger the amount of the gas blown out by the assembly rod is, and the larger the expansion degree of the copper sleeve is; the shallower the depth of the groove on the inner surface of the outer ring, the smaller the amount of gas blown out of the assembly rod, and the smaller the expansion degree of the copper bush.

The further technical scheme is as follows: the reduction degree of the amount of the air blown out by the assembly rod in the second air blowing process is determined according to the pushing distance of the roller, the size of the roller and the weight of the roller;

the longer the roller pushing distance is, the greater the degree of reduction in the amount of air blown out by the assembly bar is;

the larger the size of the roller, the larger the range of the fitting lever blown out gas, and the smaller the degree of reduction in the fitting lever blown out gas amount;

the heavier the weight of the roller, the smaller the degree of reduction in the amount of gas blown out by the fitting lever.

The further technical scheme is as follows:

the control of the shape and the size in each step is determined by a detection device in the material preparation step, the forming step and the grinding step;

The detection device transmits the data to the control device; the control device determines the amount of gas blown out by the assembly rod in the first blowing process according to the groove depth analysis of the groove on the inner surface of the outer ring; determining the distance to be pushed by the roller according to the groove depth of the groove on the inner surface of the outer ring; the reduction range of the amount of the air blown out from the fitting lever during the second blowing is analytically determined based on the pushing distance of the roller, the size of the roller and the weight of the roller.

Compared with the prior art, the application has the following beneficial technical effects: (1) The metal tube is used as the raw material, and the rolling deformation of the first forming wheel and the second forming wheel in the forming step is reduced by controlling the diameter and the thickness of the metal tube; the inner metal section or the outer metal section can be rolled and molded once through the first molding wheel and the second molding wheel; the inner metal segment or the outer metal segment has been formed into a basic shape and size, and the amount of grinding is reduced in the subsequent grinding step; the shapes of the first grinding wheel, the second grinding wheel and the third grinding wheel are determined according to the surface shape of the inner ring or the outer ring, and the grinding amounts of all positions in the inner ring or the outer ring are the same, so that the surface quality of the inner ring or the outer ring is stable; meanwhile, the inner forming piece or the outer forming piece is formed into basic shapes and sizes through a rolling step, the amount of grinding in a grinding step is small, and the surface quality of the inner ring or the outer ring is improved after the grinding; (2) The first forming wheel is pulled to move and is driven to rotate, so that the rolling forming of the inner metal section or the outer metal section is completed; when the first forming wheel rolls on the inner surface of the inner metal section or the inner surface of the outer metal section, the inner metal section or the outer metal section can expand outwards, and the deformation generated by the inner metal section or the outer metal section is eliminated through the limitation of the second forming wheel on the outer surface of the inner metal section or the outer surface of the outer metal section, so that the shape and the size of the rolled inner forming piece or outer forming piece are required; (3) In the grinding step, the same first clamping mechanism is used for switching and clamping, so that the position change of the inner forming piece or the outer forming piece is smaller when the inner forming piece or the outer forming piece is ground, the influence of the two clamping on grinding is smaller, and the grinding precision of the inner forming piece or the outer forming piece is ensured; (4) The axis of the assembly rod and the axis of the conveying rod in the assembly step are the same axis; the retainer body is sleeved on the assembly rod, and the retainer body is installed in a mode of moving along the assembly rod and then is inserted between the rollers, so that the retainer body can be smoothly inserted between the rollers; then the assembly rod is ejected when the conveying rod is inserted into the inner ring, so that the inner ring can be accurately placed into the outer ring; then the retainer bottom ring is moved along the conveying rod through the first sucker and buckled on the retainer main body, so that the assembly of the retainer is completed; (5) In the second blowing process, reducing the amount of gas blown out of the assembly rod, so that the rod groove still blows out the gas, and the gas acts on the roller, so that the roller is always placed in the groove on the inner surface of the outer ring; meanwhile, due to the reduction of the amount of the air blown out of the assembly rod, the pressure of the air blown out is insufficient to push the copper sleeve to expand, and the copper sleeve does not push the roller to deviate; (6) According to the application, a certain amount of gas is blown out, and the gas amount is controlled, so that the distance of the gas pushing the roller outwards and the expansion range of the copper sleeve outwards can be controlled, and the roller can be accurately pushed into the groove on the inner surface of the outer ring; meanwhile, the reduction degree of the air quantity blown out of the assembly rod is accurately controlled according to the pushing distance of the roller, the size of the roller and the weight of the roller, so that the air can continuously push the roller to be placed in the groove on the inner surface of the outer ring, and the copper sleeve cannot be continuously expanded in the process; (7) In the application, the adsorption and pushing of the roller are completed through the adsorption of the copper sleeve and the expansion of the copper sleeve; the control device is used for controlling the air blowing amount in the two air blowing processes, so that the rollers can be completely and accurately placed in the grooves on the inner surface of the outer ring at one time, and the coaxial assembly among the rollers, the retainer, the outer ring and the inner ring is completed.

Drawings

Fig. 1 shows a top view structural view of a production apparatus of a cylindrical roller bearing according to a first embodiment of the present invention.

Fig. 2 shows a top view of a heating device according to a first embodiment of the present invention.

Fig. 3 is a left-hand structural view showing a cooling mechanism of the first embodiment of the present invention.

Fig. 4 is a top view showing a construction of a molding apparatus according to a first embodiment of the present invention.

Fig. 5 is a front view showing a construction of a molding apparatus according to a first embodiment of the present invention.

Fig. 6 shows an enlarged structural view at a in fig. 5.

Fig. 7 is a top view showing a grinding apparatus according to a first embodiment of the present invention.

Fig. 8 is a front view of the first clamping mechanism according to the first embodiment of the present invention.

Fig. 9 shows a top view of the assembly mechanism of the first embodiment of the present invention.

Fig. 10 shows a front view of the carriage position according to the first embodiment of the present invention.

Fig. 11 is a sectional structural view showing the assembly rod incorporating roller according to the first embodiment of the present invention.

Fig. 12 is a sectional view showing a construction of a first embodiment of the invention in which a lever is fitted to a push-out roller.

The reference numerals in the drawings: 1. a molding device; 11. a first forming wheel; 12. a second forming wheel; 121. a flange; 13. a main support; 14. a turntable; 141. a fourth power device; 15. forming position; 16. a driving mechanism; 161. a drive bracket; 162. a sixth power plant; 163. a seventh power plant; 17. a clamping device; 18. a clamp; 181. a fixing seat; 182. a power member; 183. a fifth power unit; 184. a fixed rod; 185. a connection site; 186. a roller; 2. a cutting device; 21. a cutting device; 22. a first power unit; 23. a second power device; 24. a vibration plate; 3. a grinding device; 31. a first adjusting frame; 311. a first channel; 312. a ninth power plant; 313. a tenth power unit; 314. a first power bracket; 315. a first compression bar; 32. a first grinding wheel; 33. a first clamping mechanism; 331. a clamping bracket; 332. clamping claws; 333. an eleventh power plant; 334. a twelfth power plant; 335. a base; 336. a connecting rod; 34. a second grinding wheel; 35. a third grinding wheel; 36. a first mobile device; 361. thirteenth power means; 4. a detection device; 5. an assembly mechanism; 51. a carriage; 511. a conveying seat; 512. a placement seat; 513. a moving rack; 514. a pressing claw; 515. a fourteenth power plant; 516. a fifteenth power plant; 517. a main frame; 518. a placing rack; 52. assembling a rod; 521. a rod groove; 522. a twenty-first power plant; 523. a sixteenth power plant; 524. a first vibration plate; 525. a first adsorption cavity; 526. seventeenth power means; 527. a copper sleeve; 53. a conveying rod; 531. an eighteenth power plant; 532. nineteenth power means; 533. a second vibration plate; 534. a twentieth power unit; 535. an adsorption port; 536. a second adsorption cavity; 54. a first jaw; 541. a first mechanical arm; 55. a first suction cup; 551. a second mechanical arm; 6. a heating device; 61. a conveying channel; 62. an electromagnetic induction coil device; 63. a third power device; 7. a cooling mechanism; 71. a cooling tank; 72. a cooling support; 73. a conveying chain plate; 74. a blowing device; 75. a sprocket; 76. eighth power unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following more detailed description of the device according to the present invention is given with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention. For a better understanding of the invention with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or essential characteristics thereof.

Fig. 1 shows a top view structural view of a production apparatus of a cylindrical roller bearing according to a first embodiment of the present invention. Fig. 2 shows a top view of a heating device according to a first embodiment of the present invention. Fig. 3 is a left-hand structural view showing a cooling mechanism of the first embodiment of the present invention. Fig. 4 is a top view showing a construction of a molding apparatus according to a first embodiment of the present invention. Fig. 5 is a front view showing a construction of a molding apparatus according to a first embodiment of the present invention. Fig. 6 shows an enlarged structural view at a in fig. 5. Fig. 7 is a top view showing a grinding apparatus according to a first embodiment of the present invention. Fig. 8 is a front view of the first clamping mechanism according to the first embodiment of the present invention. Fig. 9 shows a top view of the assembly mechanism of the first embodiment of the present invention. Fig. 10 shows a front view of the carriage position according to the first embodiment of the present invention. Fig. 11 is a sectional structural view showing the assembly rod incorporating roller according to the first embodiment of the present invention. Fig. 12 is a sectional view showing a construction of a first embodiment of the invention in which a lever is fitted to a push-out roller. The invention discloses a production device of a cylindrical roller bearing, which is shown in combination with fig. 1, 2, 3, 4, 5, 6,7, 8, 9, 10, 11 and 12.

The production device of the cylindrical roller bearing comprises a grinding device 3, a heating device 6, a forming device 1, a cutting device 2 for cutting a metal tube and an assembling mechanism 5 for completing the assembly of the bearing; a group of cutting devices 2, a group of heating devices 6, a group of forming devices 1 and a group of grinding devices 3 are arranged in sequence; the other group of cutting devices 2, the other group of heating devices 6, the other group of forming devices 1 and the other group of grinding devices 3 are arranged in sequence; the assembly mechanism 5 is arranged between the grinding devices 3; the heating device 6 respectively heats the inner metal section and the outer metal section; the forming device 1 respectively rolls the inner metal section and the outer metal section; the grinding device 3 grinds the inner molding and the outer molding, respectively.

The shape and the size of the inner ring and the outer ring of the cylindrical roller bearing are different. The raw materials of the inner ring and the outer ring of the cylindrical roller bearing need to be cut from the metal tube of different sizes.

Preferably, the cutting devices 2 are in two groups. Preferably, the heating means 6 are in two groups. Preferably, the molding devices 1 are two groups. The cutting device 2, the heating device 6, the forming device 1 and the grinding device 3 are sequentially arranged to finish the processing of the inner ring. The other group of cutting devices 2, the other group of heating devices 6, the other group of forming devices 1 and the other group of grinding devices 3 are sequentially arranged to finish the processing of the outer ring. The assembly mechanism 5 sequentially loads the roller, the retainer body, the retainer bottom ring and the inner ring into the outer ring, and the assembly of the cylindrical roller bearing is completed.

In the application, the metal pipe is directly cut into metal sections, the metal sections comprise an inner metal section and an outer metal section, the metal sections are heated, and then the metal sections are directly roll-formed by a forming device 1. Because the inner forming part and the outer forming part are directly rolled and formed, the machining allowance is smaller, and the grinding device 3 is directly adopted for grinding, so that the processed inner ring and outer ring have better surface quality and higher dimensional accuracy.

The cutting device 2 comprises a vibrating disc 24, a cutting device 21 for cutting the metal tube, a first power device 22 for pushing the metal tube and a second power device 23 for pushing the metal tube down; the first power means 22 and the vibration plate 24 are respectively provided at both sides of the cutting device 21; the second power means 23 are arranged on the cutting device 21 around the metal tube.

The metal tubes are arranged in parallel and overlapped to form a metal tube group. Preferably, the second power means 23 are three sets. Preferably, the second power means 23 is a cylinder. The driving end of the second power device 23 is provided with a pressing block. The two sets of second power devices 23 are respectively positioned at the front side and the rear side of the metal tube set. The two sets of second power devices 23 drive the pressing blocks to press the front side and the rear side of the metal tube set. A set of secondary power means 23 is located below the metal stack. The metal tube group passes between the driving end of a group of second power devices 23 and the pressing block. A set of second power devices 23 drive the press blocks to press the upper part of the metal tube group.

Preferably, the first power means 22 is a cylinder. The first power means 22 is located on the left side of the cutting device 21. The vibration plate 24 is located on the right side of the cutting device 21. The first power device 22 drives the metal tube set to move a certain distance, and the cutting equipment 21 cuts the metal tube set, so that the metal tube set is cut into a plurality of inner metal segments or a plurality of outer metal segments. The inner or outer metal segments then enter a vibration plate 24, which vibration plate 24 delivers the inner or outer metal segments to the heating device 6.

The heating device 6 includes a conveying passage 61, an electromagnetic induction coil device 62 provided around the conveying passage 61, and a third power device 63 provided on the conveying passage 61; the third power means 63 push the inner or outer metal segment along the conveying channel 61; the electromagnetic coil arrangement 62 heats the inner metal segment or the outer metal segment.

Preferably, the cross section of the conveying passage 61 is concave. The conveying passage 61 is provided in the left-right direction. The conveying path 61 passes through the electromagnetic induction coil device 62 in the left-right direction. Preferably, the third power means 63 is a cylinder. The third power means 63 is arranged on the left side of the conveying channel 61. The right side of the conveying path 61 is directed toward the molding device 1.

The driving end of the third power device 63 reciprocates and stretches to push the inner metal segment or the outer metal segment to move along the conveying channel 61, the electromagnetic induction coil device 62 heats the inner metal segment or the outer metal segment, and then the inner metal segment or the outer metal segment enters the forming device 1.

The forming device 1 comprises a first forming wheel 11, a main support 13, a turntable 14 rotating around the main support 13, forming positions 15 distributed along the turntable 14, a second forming wheel 12 rotatably arranged around the forming positions 15, a driving mechanism 16 driving the first forming wheel 11 to move and a clamping device 17 arranged on the main support 13 in parallel; the first forming wheel 11 rolls the inner surface of the inner metal section or the outer metal section; the second forming wheel 12 rolls the outer surface of the inner or outer metal segment; the clamping device 17 clamps the inner metal segment or the outer metal segment.

The main frame 13 is provided in the up-down direction. The turntable 14 is arranged horizontally. The main bracket 13 is horizontally provided with a circular guide rail. The guide rail is connected with a sliding block in a sliding way. The slide is connected to the turntable 14.

The forming device 1 further comprises a fourth power means 141 and a clamp 18. The turntable 14 is provided with a toothed ring. The fourth power device 141 is provided with a gear. The gear engages the toothed ring. The fourth power device 141 drives the gears to rotate, which drives the toothed ring and the turntable 14 to rotate. The clamp 18 holds and secures the inner metal segment or the outer metal segment. A clamp 18 is provided on the turntable 14 around the forming station 15.

The molding position 15 is provided on the upper surface of the turntable 14. Preferably, the second forming wheels 12 are in multiple sets. The second forming wheel 12 is rotatably arranged on the upper surface of the turntable 14 around a forming station 15.

The clamp 18 includes a fixed base 181 provided on the turntable 14 around the molding position 15, a power member 182 provided to move on the turntable 14, a fifth power unit 183 driving the power member 182 to move, and a fixing lever 184 slidably provided on the fixed base 181. The fixed rod 184 is movably connected with the power member 182. The power member 182 is connected to the drive end of the fifth power device 183. The power member 182 is provided with a connection 185. A roller 186 is rotatably disposed on the fixed bar 184. The roller wheel 186 rolls along the connection location 185. The second forming wheel 12 is rotatably disposed on the fixed bar 184.

Preferably, the fifth power device 183 is a cylinder. The lower end of the power member 182 is connected to the drive end of the fifth power device 183. The attachment locations 185 are juxtaposed around the edge of the power member 182. One end of the fixing lever 184 is rotatably provided with a roller 186. The other end of the fixing lever 184 is rotatably provided with the second molding wheel 12. The second forming wheel 12 presses against the outer surface of the inner or outer metal segment.

The fifth power device 183 drives the power piece 182 to move, the roller wheel 186 rolls along the connecting position 185, the power piece 182 pushes and pulls the fixing rod 184 to move along the fixing seat 181, and the fixing rod 184 drives the second forming wheel 12 to move. The second forming wheel 12 may grip the outer surface of the inner or outer metal section and the second forming wheel 12 may also release the grip of the outer surface of the inner or outer metal section. The outer surface of the second forming wheel 12 is a contoured surface of the outer or inner metal segment outer surface.

Generally, the inner and outer surfaces of the inner and outer rings in the cylindrical roller bearing are different in shape, and since the rollers and the cage are required to be installed between the inner and outer rings, grooves are required to be formed on the inner surface of the outer ring for accommodating the installed rollers and the cage, and cut surfaces are required to be formed on the outer surface of the inner ring to facilitate the installation of the rollers and the cage. Because of the installation environment of the cylindrical roller bearing, the inner surface of the inner ring and the outer surface of the outer ring are both cylindrical, and grooves are not formed on the surfaces of the inner ring and the outer ring. So that when the second forming wheel 12 contacts the outer surface of the inner metal segment, protrusions are formed on the outer surface of the second forming wheel 12 so that the outer surface of the rolled inner metal segment forms a cut surface. When the second forming wheel 12 contacts the outer surface of the outer metal segment, no protrusions are formed on the outer surface of the second forming wheel 12, so that the outer surface of the outer metal segment pressed by the roller does not form grooves, and the outer surface thereof is cylindrical.

The upper and lower ends of the second molding wheel 12 are respectively provided with a flange 121. When the second forming wheel 12 contacts the outer surface of the inner metal section or the outer surface of the outer metal section, the ribs 121 contact the end surface of the inner metal section or the end surface of the outer metal section, and the height of the inner metal section and the height of the outer metal section are limited by the ribs 121.

The driving mechanism 16 includes a driving bracket 161, a sixth power device 162 provided in the moving direction of the first forming wheel 11, and a seventh power device 163 driving the first forming wheel 11 to rotate. Preferably, the sixth power device 162 is a linear cylinder. Preferably, the seventh power means 163 is an electric motor. The sixth power device 162 is provided on the driving bracket 161. A set of sixth power devices 162 drive the first forming wheel 11 horizontally. Another set of sixth power devices 162 drives the first forming wheel 11 to move vertically. The drive end of one set of sixth power devices 162 is connected to another set of sixth power devices 162. Another set of sixth power devices 162 moves along the drive bracket 161. The seventh power device 163 is provided at the driving end of the other group of sixth power devices 162. The seventh power unit 163 moves along the driving bracket 161. The first forming wheel 11 is connected to the driving end of the seventh power device 163.

One set of sixth power devices 162 drives the first forming wheel 11 to move horizontally and the other set of sixth power devices 162 drives the first forming wheel 11 to move vertically such that the first forming wheel 11 contacts the inner surface of the inner metal section and the inner surface of the outer metal section. When rolling is required, a set of sixth power devices 162 drives the first forming wheel 11 to horizontally move outwards, and the first forming wheel 11 continuously rolls the inner surface of the inner metal section and the inner surface of the outer metal section.

The first forming wheel 11 contacts the inner surface of the inner metal segment, and no protrusions are formed on the outer surface of the first forming wheel 11, so that the inner surface of the rolled inner metal segment does not form grooves, and the inner surface thereof is cylindrical. The first forming wheel 11 contacts the inner surface of the outer metal section, and protrusions are formed on the outer surface of the first forming wheel 11 so that grooves are formed on the inner surface of the outer metal section pressed by the rollers.

The main bracket 13 is provided with a rotary joint, one end of the rotary joint is communicated with an air source, and the other end of the rotary joint is communicated with the fifth power device 183 and the sixth power device 162.

The clamping device 17 is provided at the upper end of the main support 13. The clamping device 17 comprises a four-axis mechanical arm and clamping jaws. The clamping jaw is installed at the drive end of four-axis arm. The clamping device 17 moves the inner metal segment or the outer metal segment on the conveying channel 61 into the forming position 15 for rolling. After the rolling is completed, the clamping device 17 moves the inner metal segment or the outer metal segment out of the forming station 15. The four-axis mechanical arm is used for completing movement of the inner metal section or the outer metal section, and the clamping jaw is used for completing clamping and putting down of the inner metal section or the outer metal section.

The inner metal segment forms an inner molding after rolling by the first molding wheel 11 and the second molding wheel 12, the inner molding basically forms the shape of the inner ring, and the inner molding has a grinding allowance compared with the inner ring. The outer metal segments, after rolling by the first forming wheel 11 and the second forming wheel 12, form an outer forming member, which basically forms the shape of the outer ring, the outer forming member having a grinding allowance for the outer ring size. The basic forming is completed by one-time rolling, so that the subsequent grinding amount is reduced, and the production efficiency of the cylindrical roller bearing is improved.

The production apparatus of the cylindrical roller bearing further includes a cooling mechanism 7 that cools the inner molding member and the outer molding member. The cooling means 7 are located between the forming device 1 and the grinding device 3.

The cooling mechanism 7 includes a blower 74, a cooling bracket 72, a cooling tank 71 storing a cooling medium, and a conveying flight 73 moving along the cooling bracket 72. One end of the conveying flight 73 enters the medium in the cooling trough 71. The other end of the conveying flight 73 faces the grinding device 3. A blower 74 is provided on the cooling support 72 around the conveying flight 73.

A sprocket 75 is rotatably provided on the cooling bracket 72. An eighth power unit 76 is mounted on the cooling bracket 72. The conveying chain plate 73 is wound around the sprocket 75. Preferably, the eighth power device 76 is an electric motor. The drive end of the eighth power device 76 is connected to the sprocket 75.

The clamping device 17 is used for placing the inner molding piece or the outer molding piece into the cooling groove 71 for cooling, the eighth power device 76 is used for driving the chain wheel 75 to rotate, the chain wheel 75 is used for driving the conveying chain plate 73 to move, the conveying chain plate 73 is used for driving the inner molding piece or the outer molding piece to move close to the grinding device 3, the air blowing device 74 is used for generating air to blow the inner molding piece or the outer molding piece, and moisture on the inner molding piece or the outer molding piece is blown to dry.

The grinding device 3 comprises a first clamping mechanism 33, a first moving device 36, a first adjusting frame 31, a first grinding wheel 32 which is arranged on the first adjusting frame 31 in a relative rotating manner, a second grinding wheel 34 which is arranged on the first moving device 36 in a rotating manner, and a third grinding wheel 35 which is arranged on the first moving device 36 in a rotating manner; the second grinding wheel 34 grinds the inner and outer molding inner surfaces; the third grinding wheel 35 grinds the inner molding outer surface and the outer molding outer surface. The first clamping mechanism 33 switches between clamping the inner and outer surfaces of the outer molding member.

The grinding device 3 further includes a ninth power unit 312 that drives the first grinding wheel 32 to rotate and a tenth power unit 313 that moves the first grinding wheel 32.

A first passage 311 is formed in the first regulation frame 31. The inner or outer molding member rolls along the first channel 311. The first grinding wheel 32 is oppositely arranged on two sides of the first channel 311 on the first adjusting frame 31. The end face of the first grinding wheel 32 grinds the end face of the inner molding or the end face of the outer molding. Preferably, the ninth power device 312 is an electric motor. The drive end of the ninth power unit 312 is coupled to the first grinding wheel 32. Preferably, the tenth power device 313 is a mobile module. The tenth power unit 313 is provided on the first regulating frame 31 in the moving direction of the first grinding wheel 32. The driving end of the tenth power unit 313 is provided with a first power bracket 314. The first grinding wheel 32 is rotatably disposed on the first power bracket 314. The first adjusting bracket 31 is provided with a first pressing rod 315 along the first channel 311. An inner molding or an outer molding is interposed between the first channel 311 and the first compression bar 315.

When the inner molding member or the outer molding member rolls along the first channel 311, the first grinding wheel 32 drives the inner molding member or the outer molding member to move upwards when contacting the inner molding member or the outer molding member, so as to prevent the inner molding member or the outer molding member from sliding out of the first channel 311, the upper end of the inner molding member or the outer molding member is contacted by the first compression bar 315, and the rolling range of the inner molding member or the outer molding member along the first channel 311 is limited.

The inner molding is placed in a vertical state in the first passage 311. The first presser bar 315 contacts the upper side of the inner molding member. The ninth power unit 312 drives the first grinding wheel 32 to rotate, and the tenth power unit 313 drives the first grinding wheels 32 to approach each other, the first grinding wheels 32 grinding the end faces of the inner molded article.

The outer molding member is placed in a vertical state in the first passage 311. The first lever 315 contacts the upper side of the outer molding member. The ninth power unit 312 drives the first grinding wheel 32 to rotate, and the tenth power unit 313 drives the first grinding wheels 32 to approach each other, the first grinding wheels 32 grinding the end faces of the outer molded member.

The first clamping mechanism 33 includes a twelfth power device 334, a base 335, a clamping bracket 331, a clamping jaw 332 swingably provided on the clamping bracket 331, and an eleventh power device 333 driving the clamping jaw 332 to swing; the twelfth power device 334 drives the inner molding member or the outer molding member to rotate. The clamping jaw 332 is arranged to swing around the inner or outer profile.

The holding bracket 331 is rotatably provided on the base 335. The intermediate position of the holding claw 332 is swingably provided on the holding bracket 331. The two sides of the clamping jaw 332 extend outwardly. The clamping jaw 332 is formed with an obtuse included angle between its sides. Preferably, the eleventh power means 333 is a cylinder. The driving end of the eleventh power unit 333 is movably connected to the swing position of the holding claw 332. The driving end of the eleventh power device 333 is movably connected with a connecting rod 336. The link 336 is movably connected to the swing position of the clamp jaw 332.

A swivel is provided on the base 335. One end of the rotary joint is connected with an air source, and the other end of the rotary joint is connected with an eleventh power device 333. Preferably, the twelfth power device 334 is an electric motor. The twelfth power device 334 is disposed on the base 335. The twelfth power device 334 drives the clamping bracket 331 to rotate along the base 335.

The first moving means 36 is arranged around the first clamping mechanism 33. The first mobile device 36 includes two sets of mobile modules. The two groups of mobile modules are respectively arranged horizontally and vertically. A side first moving means 36 drives the second grinding wheel 34 vertically and horizontally. The other side first moving means 36 drives the third grinding wheel 35 to move vertically and horizontally. The thirteenth power device 361 is disposed at the moving end of the first moving device 36. The thirteenth power device 361 on the first moving device 36 on one side drives the second grinding wheel 34 to rotate. The thirteenth power device 361 on the first moving device 36 on the other side drives the third grinding wheel 35 to rotate.

When the second grinding wheel 34 and the third grinding wheel 35 grind the inner molded member, the outer surface shape of the second grinding wheel 34 is the shape of the inner surface of the inner ring. The inner surface of the inner ring is cylindrical, and the outer surface of the second grinding wheel 34 is cylindrical, so that the grinding of the inner surface of the inner ring is finished. The outer surface of the third grinding wheel 35 is in the shape of the outer surface of the inner ring, the inner ring is provided with rollers and a retainer, a tangent plane is formed on the outer surface of the inner ring, and a bulge is formed on the outer surface of the third grinding wheel 35 to finish grinding of the tangent plane.

When the second grinding wheel 34 and the third grinding wheel 35 grind the inner molding, the eleventh power unit 333 drives the holding claw 332 to swing, the holding claw 332 holds the outer surface of the inner molding, the first moving unit 36 drives the second grinding wheel 34 to move to contact the inner surface of the inner molding, and the second grinding wheel 34 rotates to finish grinding of the inner surface of the inner molding. The eleventh power unit 333 drives the holding claw 332 to swing reversely, the holding claw 332 holds the inner surface of the inner molding, the first moving unit 36 drives the third grinding wheel 35 to move in contact with the outer surface of the inner molding, and the third grinding wheel 35 rotates to finish grinding of the outer surface of the inner molding.

When the second grinding wheel 34 and the third grinding wheel 35 grind the outer molded member, the outer surface of the second grinding wheel 34 is shaped as the inner surface of the outer ring. The outer race of the present application will have rollers and retainers mounted thereon and grooves formed in the inner surface of the outer race and protrusions formed on the outer surface of the second grinding wheel 34 to complete the grinding of the grooves. According to the application, the outer surface of the outer ring is cylindrical, and the outer surface of the third grinding wheel 35 is cylindrical, so that the grinding of the outer surface of the outer ring is completed.

When the second grinding wheel 34 and the third grinding wheel 35 grind the outer molding member, the eleventh power unit 333 drives the holding claw 332 to swing, the holding claw 332 holds the outer surface of the outer molding member, the first moving unit 36 drives the second grinding wheel 34 to move in contact with the inner surface of the outer molding member, and the second grinding wheel 34 rotates to finish grinding of the inner surface of the outer molding member. The eleventh power unit 333 drives the holding claws 332 to swing reversely, the holding claws 332 hold the inner surface of the outer molding, the first moving unit 36 drives the third grinding wheel 35 to move in contact with the outer surface of the outer molding, and the third grinding wheel 35 rotates to finish grinding of the outer surface of the outer molding.

The assembly mechanism 5 comprises a conveying frame 51 for placing the outer ring, an assembly rod 52 for conveying rollers to be inserted into the outer ring, a conveying rod 53 for conveying the inner ring to be installed into the outer ring, a first clamping jaw 54 for clamping a roller piece inserted into the retainer body, and a first sucking disc 55 for sucking the retainer bottom ring to be buckled into the retainer body; the assembly rod 52 extends into the outer ring from one side; the conveying rod 53 extends into the outer ring from the other side; the assembly bar 52 and the first jaw 54 are located on one side of the carriage 51; the transfer lever 53 and the first suction cup 55 are located on the other side of the transfer frame 51.

The carriage 51 includes a carriage 511, a placement base 512 for placing the outer ring, a moving frame 513 provided on the carriage 511 to move, a pressing claw 514 for pressing down the outer ring, a fourteenth power device 515 for driving the moving frame 513 to move, and a fifteenth power device 516 for driving the pressing claw 514; the placement bases 512 are juxtaposed on the transport base 511. Fourteenth power device 515 is disposed on transfer base 511. The presser finger 514 is hinged to the placement base 512. The driving end of the fifteenth power device 516 is movably connected with the pressing claw 514.

The moving frame 513 includes a main frame 517 and a placement frame 518. The placing frames 518 are juxtaposed on the main frame 517. When the moving frame 513 moves the cylindrical roller bearing, the cylindrical roller bearing is placed on the placing frame 518. Fourteenth power plant 515 includes a vertically disposed cylinder and a horizontally disposed linear cylinder. Fourteenth power device 515 drives movement of frame 513 to perform vertical and horizontal movements. When the driving end of the fifteenth power device 516 is extended, the pressing claw 514 is pushed to press down the outer ring. When the drive end of the fifteenth power device 516 is retracted, the presser finger 514 is pulled away from the outer race.

After the outer ring is placed on the placement seat 512, the outer ring needs to be moved into the next placement seat 512 for assembly, and after the bearing is assembled on the next placement seat 512, the bearing needs to be moved to the next placement seat 512 for recycling.

The fourteenth power device 515 drives the moving frame 513 to ascend to lift the outer ring, the fourteenth power device 515 drives the moving frame 513 to horizontally move close to the next placing seat 512, and the fourteenth power device 515 drives the moving frame 513 to descend to place the outer ring on the next placing seat 512. The fifteenth power device 516 drives the pressing claw 514 to press down the outer ring to fix the outer ring. After the cylindrical roller bearing is assembled, the fourteenth power device 515 drives the moving frame 513 to perform the same movement path, and the cylindrical roller bearing is moved into the next placement seat 512.

The fitting mechanism 5 further includes a twenty-first power device 522 that drives the fitting lever 52 to rotate, a sixteenth power device 523 that moves the fitting lever 52 to move, a first vibration plate 524 that conveys the rollers, and a seventeenth power device 526 that pushes the rollers.

A rod groove 521 is formed in parallel around the end of the fitting rod 52 extending into the outer ring. Preferably, the sixteenth power device 523 is a mobile module. Preferably, the twenty-first power device 522 is an electric motor. A twenty-first power plant 522 is provided at the drive end of the sixteenth power plant 523. The mounting bar 52 is connected to the drive end of the twenty-first power device 522. Preferably, seventeenth power device 526 is a cylinder. A seventeenth power device 526 is disposed at the discharge end of the first vibratory pan 524. The assembly rod 52 has a first suction cavity 525 formed therein. One end of the first adsorption cavity 525 is connected to a suction source. The other end of the first adsorption cavity 525 communicates with the rod groove 521.

The ends of the mounting rods 52 extending into the outer race are provided with rod openings in parallel. The stem port communicates with the first adsorption cavity 525. A copper sleeve 527 is fitted around the mounting stem 52. The copper sleeve 527 is recessed into the shaft mouth to form a shaft groove 521. The other end of the first adsorption cavity 525 is communicated with the rod groove 521 on the copper sleeve 527.

When the rod groove 521 is moved into the roller, after the assembly rod 52 is extended into the outer ring, gas is sprayed into the rod groove 521, the copper sleeve 527 is also deformed outwards, and the copper sleeve 527 pushes the roller outwards, so that the roller pushes the groove of the outer ring.

The front and rear ends of the copper sleeve 527 are fixedly connected with the assembly bars 52. The copper sleeve 527 completely covers the stem opening. Because copper sleeve 527 is copper, the copper material is softer. The bar groove 521 takes on different shapes in different states. After the copper sleeve 527 is sleeved on the assembly rod 52, the first adsorption cavity 525 sucks gas, the copper sleeve 527 is sucked into the rod mouth, and the rod groove 521 is in an inward concave arc shape. At this time, the roller is pushed into the rod groove 521, and the rod groove 521 adsorbs the roller, so that the roller can be firmly placed in the rod groove 521 and cannot slide out. When the assembly rod 52 is placed on the outer ring, the roller is positioned in the outer ring, the roller is required to be installed in a groove on the inner surface of the outer ring, the first adsorption cavity 525 is not used for sucking gas any more, and the gas is blown out, and the rod groove 521 is communicated with the first adsorption cavity 525, so that the gas pushes the roller to move outwards, and the gas in the first adsorption cavity 525 also pushes the copper sleeve 527 outwards in the process, and the rod groove 521 is changed into a W shape from an inward concave arc shape and gradually changes into an outward convex arc shape. The shape of the bar groove 521 is such that the copper sleeve 527 deforms outwardly during the transition, and the copper sleeve 527 pushes the rollers outwardly during the deformation. The rollers are placed in the grooves on the inner surface of the outer ring under the pushing of the gas and the copper sleeve 527, and the assembly of the rollers is completed. Through subsequent assembly of the retainer body, the retainer body is inserted between adjacent rollers, and the retainer body limits the rollers to avoid the rollers from sliding off.

The first vibration plate 524 completes the feeding of the rollers, the seventeenth power device 526 pushes the rollers to move into the rod grooves 521, the rod grooves 521 absorb the rollers, the twenty first power device 522 drives the assembly rod 52 to rotate, the rollers are arranged in all the rod grooves 521, the sixteenth power device 523 drives the twenty first power device 522 and the assembly rod 52 to move, and the assembly rod 52 loads the rollers into the outer ring.

The first jaw 54 is mounted on a first robotic arm 541.

The first clamping jaw 54 clamps the holder body before the assembly bar 52 is fitted into the roller, and the first mechanical arm 541 sleeves the holder body on the assembly bar 52. The assembly rod 52 is fitted with rollers and fitted into the outer ring, and the first robot arm 541 drives the holder body to move along the assembly rod 52 and to be inserted between the rollers.

The fitting mechanism 5 further includes an eighteenth power device 531 that drives the conveying lever 53 to rotate, a nineteenth power device 532 that moves the conveying lever 53, a second vibration plate 533 that conveys the inner ring, and a twentieth power device 534 that pushes the inner ring.

An adsorption port 535 is provided in parallel around one end of the conveying rod 53 extending into the inner ring. Preferably, nineteenth power device 532 is a mobile module. Preferably, the eighteenth power device 531 is an electric motor. An eighteenth power device 531 is provided at the drive end of the nineteenth power device 532. The conveying rod 53 is connected to the driving end of the eighteenth power device 531. Preferably, the twentieth power device 534 is a cylinder. The twentieth power device 534 is disposed at the discharge end of the second vibratory pan 533. The conveying rod 53 has a second suction cavity 536 formed therein. One end of the second suction cavity 536 is connected to a suction source. The other end of the second adsorption cavity 536 communicates with the adsorption port 535.

The second vibration disc 533 completes the feeding of the inner ring, the twentieth power device 534 pushes the inner ring to be close to the adsorption port 535, the conveying rod 53 is inserted into the inner ring, the adsorption port 535 adsorbs the inner ring, the eighteenth power device 531 drives the conveying rod 53 to rotate, the nineteenth power device 532 drives the eighteenth power device 531 and the conveying rod 53 to move, and the inner ring is spirally moved and installed in the outer ring.

The first suction cup 55 is mounted on the second robot arm 551.

Before the conveying rod 53 is installed into the inner ring, the first sucker 55 adsorbs the bottom ring of the retainer, and the second mechanical arm 551 is used for sleeving the bottom ring of the retainer on the conveying rod 53. The conveying rod 53 is provided with an inner ring and an outer ring, and the second mechanical arm 551 drives the retainer bottom ring to move along the conveying rod 53 and buckle into the retainer body.

Second embodiment:

As shown in fig. 1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12, the production process of the cylindrical roller bearing of the present embodiment, when the cylindrical roller bearing is produced, includes the steps of the following production process:

the preparation step comprises the following steps: cutting metal tubes with different diameters and thicknesses into a plurality of inner metal sections and outer metal sections. And heating the inner metal section and the outer metal section by electromagnetic induction coils respectively.

And (3) forming: the inner metal segment and the outer metal segment are placed in each molding device 1, respectively. The first forming wheel 11 and the second forming wheel 12 roll the two sides of the inner metal section and the outer metal section into a set shape to form an inner forming member and an outer forming member.

Grinding: the end surfaces of the inner molding member and the outer molding member are ground, respectively. The inner and outer surfaces of the inner molding are ground to form an inner ring, and the inner and outer surfaces of the outer molding are ground to form an outer ring.

Assembling: rollers are arranged in the outer ring, a retainer main body is inserted between the rollers, and a retainer bottom ring is arranged in the retainer main body so that the retainer main body and the retainer bottom ring are mutually buckled. An inner ring is arranged in the outer ring.

The preparation step is preceded by a modeling step:

Modeling is carried out according to the size and shape of the inner ring and the outer ring to obtain final model data, grinding allowance is overlapped on the final model data to obtain intermediate model data, and rolling deformation is overlapped on the intermediate model data to obtain initial material model data.

The modeling step and the material preparation step further comprise a calculating step:

And determining the diameter, thickness and cutting interval of the metal tube in the material preparation step according to the initial material model data. The shape, size and rolling deformation of the first forming wheel 11 and the second forming wheel 12 in the forming step are determined based on the intermediate model data. And determining the shape, the size and the grinding amount of the grinding wheel for grinding in the grinding step according to the final model data.

The processing of the inner ring and the outer ring mainly comprises two steps of rolling and grinding, so as to ensure the final size of the processed inner ring and outer ring. Machining allowance needs to be reserved in different steps, and detection and calibration are carried out on the machining allowance in the machining process.

The metal tube is used as the raw material, and the rolling deformation of the first forming wheel 11 and the second forming wheel 12 in the forming step is reduced by controlling the diameter and the thickness of the metal tube. The inner metal segment or the outer metal segment can be roll-formed once by the first forming wheel 11 and the second forming wheel 12. The inner or outer metal segments have now been formed to a basic shape and size, and the amount of grinding is reduced in the subsequent grinding step. The shapes of the first grinding wheel 32, the second grinding wheel 34 and the third grinding wheel 35 are determined according to the surface shape of the inner ring or the outer ring, and the grinding amounts of the respective positions in the inner ring or the outer ring are the same, so that the surface quality of the inner ring or the outer ring is stable. Meanwhile, the inner forming piece or the outer forming piece is formed into the basic shape and the size through the rolling step, the grinding amount in the grinding step is small, and the surface quality of the inner ring or the outer ring is improved after grinding.

In the material preparation step, the diameter and thickness of the metal tube are selected according to the calculated amount, and the cutting device 2 controls the cutting interval. The shape and size of the first and second molding wheels 11 and 12 are determined according to the calculated amounts in the molding step, and the amount of rolling deformation of the first and second molding wheels 11 and 12 is determined. The shape, size and grinding amount of the first grinding wheel 32, the shape, size and grinding amount of the second grinding wheel 34, and the shape, size and grinding amount of the third grinding wheel 35 are determined according to the calculated amounts in the grinding step.

In the material preparation step: a plurality of metal pipes are stacked on the cutting device 21. The second power means 23 presses down the fixed metal tube and the cutting device 21 cuts the metal tube into several inner or outer metal segments. The first power means 22 pushes the inner or outer metal segment into the vibration disk 24. The vibrating tray 24 delivers the inner metal segment or the outer metal segment to the heating device 6.

The diameter of the metal tube and the wall thickness of the metal tube are determined when the metal tube is fed. The control of the cutting interval is determined by the first power device 22, and the distance that the first power device 22 pushes the metal tube to move is the cutting interval of the metal tube. Since the cutting device 21 is used for cutting once to generate a plurality of inner metal sections or outer metal sections, the inner metal sections or outer metal sections need to be heated one by one, and the inner metal sections or outer metal sections are pushed into the vibration disc 24 first and then are fed one by one through the vibration disc 24 for heating.

Because the shapes and the sizes of the inner ring and the outer ring are different, the cutting device 2 can not cut metal pipes with different specifications in the same cutting process. The cutting device 2 can only cut metal tubes of the same specification simultaneously, either all inner or all outer metal segments.

The detection device 4 is mounted at the outlet of the vibrating disk 24. Preferably, the detection device 4 is a laser high-precision measuring instrument. The detection means 4 detect the shape, wall thickness and thickness of the inner or outer metal segment and transmit data to the control means. The control device judges whether the detected numerical value accords with the initial material model data. And the quality inspection can be carried out when the metal pipe is fed. If the detecting device 4 detects that the shape of the inner metal segment or the outer metal segment deviates, the lower pressure of the cutting device 21 is larger, and the control device controls the lower pressure of the cutting device 21. If the detecting means 4 detects a deviation in the wall thickness of the inner or outer metal segment, it is indicated that there is a certain deviation in the wall thickness of the individual metal tube. The thickness of the inner metal section or the outer metal section is the cutting interval of the inner metal section or the outer metal section. If the detecting device 4 detects that the thickness of the inner metal segment or the outer metal segment deviates, it is indicated that the distance that the first power device 22 pushes the metal tube to move needs to be adjusted.

When deviations in the shape, wall thickness and thickness of the inner or outer metal segments occur, frequent adjustments of the cutting down force of the cutting device 21 and the push distance of the first power means 22 or replacement of a metal tube of acceptable wall thickness are not required. The forming step and the grinding step are further performed subsequently, and if the shape deformation amount of the inner metal segment or the outer metal segment is small, the processing of the forming step is not affected, and the cutting down pressure of the cutting device 21 is not required to be adjusted. If the wall thickness of the inner metal section or the outer metal section has small change, the processing of the forming step is not affected, and the metal tube with qualified wall thickness does not need to be replaced. If the thickness variation of the inner metal segment or the outer metal segment is small, the grinding amount of the grinding step is not affected, and the pushing distance of the first power unit 22 does not need to be adjusted.

In the material preparation step: the inner metal segment or the outer metal segment is placed in the conveying channel 61. The third power means 63 push the inner or outer metal segment along the conveying channel 61. The electromagnetic coil arrangement 62 heats the inner metal segment or the outer metal segment.

The outlet of the vibration plate 24 communicates with the conveying passage 61, and after the inner metal segment or the outer metal segment is placed in the conveying passage 61, the third power device 63 pushes the inner metal segment or the outer metal segment to move along the conveying passage 61. The inner or outer metal segment is first proximate to the electromagnetic coil assembly 62 and then distal to the electromagnetic coil assembly 62. The inner or outer metal sections complete the heating during the approach to the electromagnetic coil assembly 62.

The heating temperature of the inner metal segment or the outer metal segment is controlled by controlling the power of the electromagnetic induction coil device 62, the time that the inner metal segment or the outer metal segment stays within the electromagnetic induction coil device 62.

In the forming step: the clamping device 17 moves the inner metal segment or the outer metal segment into the forming station 15. The second forming wheel 12 is adjacent to and in contact with the outer or inner metal segment outer surface. The drive mechanism 16 drives the first forming wheel 11 adjacent to and in contact with the inner metal section inner surface or the outer metal section inner surface. The driving mechanism 16 drives the first forming wheel 11 to rotate and move to finish rolling of the inner metal segment or the outer metal segment. After the inner or outer metal segments are rolled into the inner or outer profile, the clamping device 17 moves the inner or outer profile out of the forming station 15.

The clamping device 17 moves the inner metal segment or the outer metal segment of the transfer channel 61 into the forming station 15. The clamp 18 drives the second forming wheel 12 adjacent to and in contact with the inner metal section outer surface or the outer metal section outer surface. The drive mechanism 16 drives the first forming wheel 11 adjacent to and in contact with the inner metal section inner surface or the outer metal section inner surface. The driving mechanism 16 drives the first forming wheel 11 to rotate and move to roll the inner metal section or the outer metal section, and the rotation of the first forming wheel 11 drives the inner metal section or the outer metal section to rotate. The driving mechanism 16 drives the first forming wheel 11 to press the inner metal section or the outer metal section in the rolling process, and the inner metal section or the outer metal section gradually conforms to the outer surface of the second forming wheel 12 and the outer surface of the first forming wheel 11 after being extruded.

The application completes the roll forming of the inner metal section or the outer metal section by pulling the first forming wheel 11 to move and driving the first forming wheel to rotate. When the first forming wheel 11 rolls on the inner surface of the inner metal section or the inner surface of the outer metal section, the inner metal section or the outer metal section can expand and deform outwards, and the deformation generated by the inner metal section or the outer metal section is eliminated by limiting the outer surface of the inner metal section or the outer surface of the outer metal section through the second forming wheel 12, so that the shape and the size of the rolled inner forming piece or outer forming piece are required. The clamping device 17 moves the inner or outer profile out of the profile position 15 and into the cooling mechanism 7.

The inner molding member or the outer molding member is placed in the cooling tank 71 and cooled by the soaking medium, and then the conveying chain plate 73 moves the inner molding member or the outer molding member, and the air blowing device 74 blows the water on the inner molding member or the outer molding member to dry.

The detection device 4 is mounted on a cooling support 72. The detecting means 4 detects the shape and thickness of the inner or outer profile and transmits data to the control means. The control device judges whether the detected numerical value accords with the intermediate model data. If the detecting means 4 detects that the shape of the inner mold member or the outer mold member is deviated, it is indicated that the shapes of the first mold wheel 11 and the second mold wheel 12 are deviated. If the detecting means 4 detects a deviation in the thickness of the inner or outer molding, it is indicated that the rolling force of the first molding wheel 11 is deviated.

When the shape and thickness of the inner or outer molding member deviate, frequent adjustment of the shape of the first molding wheel 11 and the second molding wheel 12, and the rolling pressure of the first molding wheel 11 are not required. Further, there is a grinding step, and if the shape change of the inner mold member or the outer mold member is small, the processing in the grinding step is not affected, and it is not necessary to trim the shape of the first mold wheel 11 and the second mold wheel 12 or to replace the first mold wheel 11 and the second mold wheel 12. If the thickness variation of the inner mold member or the outer mold member is small and the thickness is not smaller than the final mold data, it is not necessary to adjust the roll pressure of the first molding wheel 11.

In the grinding step: the first grinding wheel 32 grinds an end face of the inner molding or an end face of the outer molding. The first clamping mechanism 33 clamps the outer surface of the inner molding or the outer surface of the outer molding. The second grinding wheel 34 grinds the inner and outer molding inner surfaces. The first clamping mechanism 33 switches clamping the inner surface of the inner molded part or the inner surface of the outer molded part. The third grinding wheel 35 grinds the inner molding outer surface and the outer molding outer surface. The inner molding piece or the outer molding piece is ground to form an inner ring or an outer ring.

The detection device 4 is mounted on the first adjustment frame 31. The first grinding wheel 32 completes grinding of the end face of the inner molded part or the end face of the outer molded part at a time, and the detecting device 4 detects the thickness of the inner molded part or the thickness of the outer molded part after grinding and transmits data to the control device. The control device judges whether the detected numerical value meets the requirement of the final model data. When the thickness of the inner molding member or the thickness of the outer molding member deviates, the control device controls the tenth power device 313 to adjust the interval of the first grinding wheels 32, thereby performing real-time adjustment of the thickness of the inner molding member or the thickness of the outer molding member.

In the grinding step, the same first clamping mechanism 33 is used for switching and clamping, so that the position change of the inner forming piece or the outer forming piece is smaller when the inner forming piece or the outer forming piece is ground, the influence of two clamping on grinding is smaller, and the grinding precision of the inner forming piece or the outer forming piece is ensured.

In the grinding step, the inner forming part or the outer forming part is ground to form an inner ring or an outer ring, the quality of a finished product is required to be detected, and the surface quality, the shape and the size of the inner ring or the outer ring are required to be detected. If there is a deviation in the surface quality of the inner race or the outer race, the rotational speeds of the first grinding wheel 32, the second grinding wheel 34, and the third grinding wheel 35 need to be adjusted. If there is a deviation in the shape of the inner ring or the outer ring, it is necessary to trim the shapes of the second grinding wheel 34 and the third grinding wheel 35 or to replace the second grinding wheel 34 and the third grinding wheel 35. If there is a deviation in the size of the inner ring or the outer ring, it is necessary to adjust movement data of the second grinding wheel 34 and the third grinding wheel 35.

In the assembly steps: the outer ring is placed on the conveying frame 51 to complete conveying. On one side of the outer race, the mounting bar 52 houses the rollers and the first jaw 54 houses the cage body. On the other side of the outer ring, the conveying rod 53 is installed into the inner ring, and the first sucking disc 55 is buckled into the bottom ring of the retainer.

In the assembly step, the outer ring is placed on the conveying frame 51, the rollers are conveyed on the assembly rod 52, the assembly rod 52 adsorbs the rollers, the first clamping jaw 54 sleeves the retainer body on the assembly rod 52, the assembly rod 52 moves into the outer ring, the copper sleeve 527 is expanded and deformed outwards through the blown air, the copper sleeve 527 pushes the rollers to be placed in the grooves of the outer ring, and the first clamping jaw 54 moves the retainer body along the assembly rod 52 and inserts the retainer body between the rollers. The inner collar is sleeved on the conveying rod 53. The conveying rod 53 adsorbs the inner ring, the first sucking disc 55 is sleeved on the conveying rod 53 with the retainer bottom ring, the conveying rod 53 moves into the outer ring, the assembling rod 52 stops blowing out gas, the conveying rod 53 pushes the assembling rod 52 out of the outer ring, the inner ring is arranged in the outer ring, the first sucking disc 55 moves the retainer bottom ring along the conveying rod 53 and is buckled on the retainer main body, and the conveying rod 53, the first clamping jaw 54 and the first sucking disc 55 are respectively far away from the conveying frame 51, so that the cylindrical roller bearing is assembled.

The axis of the assembly rod 52 and the axis of the conveying rod 53 in the assembly step are the same axis. Since the retainer body is fitted over the fitting rod 52 and is inserted between the rollers after moving along the fitting rod 52, the retainer body can be smoothly inserted between the rollers. The assembly rod 52 is then ejected when the transfer rod 53 is inserted into the inner ring so that the inner ring can be accurately placed into the outer ring. And then the retainer bottom ring is moved along the conveying rod 53 by the first sucking disc 55 and buckled on the retainer main body, so that the assembly of the retainer is completed.

In the assembly steps: the amount of gas blown out of the mounting stem 52, the degree of expansion of the copper sleeve 527, is positively correlated with the outer ring size. The deeper the depth of the groove in the inner surface of the outer ring, the greater the amount of gas blown out of the fitting rod 52, and the greater the degree of expansion of the copper sleeve 527. The shallower the depth of the groove in the inner surface of the outer ring, the smaller the amount of gas blown out of the fitting rod 52, and the smaller the degree of expansion of the copper sleeve 527.

The amount of gas blown out of the fitting rod 52 determines the degree of expansion of the copper bush 527, and the amount of gas blown out of the fitting rod 52 is determined according to the depth of the groove in the inner surface of the outer ring.

The fitting rod 52 blows out the air in a short time, so that the copper bush 527 is rapidly expanded in a short time, so that the rollers can be rapidly fitted into the inner ring. The air blown out of the mounting bar 52 pushes the rollers outwardly and the air simultaneously pushes the copper sleeve 527 to expand and push the rollers outwardly. When the roller moves to the limit position, the roller is placed in the groove on the inner surface of the outer ring, and the outer surface of the roller contacts the surface of the groove.

The assembly bar 52 has two blow-in processes:

a first blowing process: the mounting bar 52 blows a quantity of gas which pushes the rollers outwardly and copper sleeve 527 outwardly against the rollers which are disposed in grooves in the inner surface of the outer race.

And a second blowing process: the amount of air blown out of the mounting bar 52 is reduced by 35% -55% and the air pushes the rollers outwardly and the copper sleeve 527 stops expanding outwardly.

In the first blowing process, the rollers only need to be pushed into the grooves on the inner surface of the outer ring, so that the amount of air blown out by the assembly rod 52 can be directly determined only according to the groove depth of the grooves. The expansion of the copper sleeve 527 is accomplished at the middle of the rod groove 521 during the first blow.

If the assembly rod 52 continuously blows a certain amount of air during the first blowing process, after the outer surface of the roller contacts the surface of the groove, the copper sleeves 527 are expanded at the two sides of the rod groove 521, and at this time, the copper sleeves 527 push the roller to shift positions, so that the retainer body cannot be inserted between the adjacent rollers. It is necessary to switch to the second blowing process immediately when the outer surface of the roller contacts the surface of the groove.

During the second blowing process, a pushing force is required to be applied to the rollers so that the rollers are always placed in the grooves on the inner surface of the outer ring before the rollers are inserted into the cage body, and it is also required to ensure that the copper sleeve 527 no longer expands.

The amount of gas blown out of the mounting bar 52 is reduced during the second blow so that the bar groove 521 is still blowing out gas, which acts on the rollers so that the rollers are always placed in the grooves of the inner surface of the outer ring. At the same time, the pressure of the blown gas is insufficient to push the copper sleeve 527 to expand due to the reduction in the amount of the blown gas from the fitting rod 52, and the copper sleeve 527 does not push the rollers to deflect.

The degree of decrease in the amount of air blown out by the fitting lever 52 during the second air blowing is determined according to the push distance of the roller, the size of the roller, and the weight of the roller.

The longer the roller pushing distance, the greater the degree of reduction in the amount of air blown out by the fitting lever 52.

The larger the size of the roller, the larger the range in which the fitting lever 52 blows out the gas, and the smaller the degree of decrease in the amount of the fitting lever 52 blowing out the gas.

The heavier the weight of the roller, the less the amount of blown air from the mounting bar 52 decreases.

The amount of gas blown out in the second blowing process needs to satisfy both the requirements of pushing the roller and preventing the copper sheathing 527 from expanding, and the degree of reduction in the amount of gas blown out by the fitting lever 52 needs to be strictly controlled. The degree of decrease in the amount of air blown out of the fitting lever 52 is affected by three aspects of the pushing distance of the roller, the size of the roller, and the weight of the roller.

The gas blown out during the second blowing process may expand the copper sleeve 527, and when the expansion range of the copper sleeve 527 is smaller, more gas is required to expand the copper sleeve 527, and as the expansion range of the copper sleeve 527 is gradually increased, the required gas is gradually reduced.

When the pushing distance of the roller is longer, the expansion range of the copper sleeve 527 is also larger, and at the moment, the structural strength of the copper sleeve 527 is weaker. If the amount of the air blown out from the assembly rod 52 is large, the copper sleeve 527 will shake after expanding, so that the effective support cannot be formed on the roller, and meanwhile, the air blown out from the rod groove 521 will shake, so that the roller will deviate. The degree of decrease in the amount of gas blown out of the fitting lever 52 needs to be larger as the roller pushing distance is longer so that only a small amount of gas is blown toward the roller. The small amount of gas does not cause shaking after the copper sleeve 527 is inflated.

When the size of the roller is large, it is necessary to enlarge the range in which the fitting rod 52 blows out the gas. The larger the size of the through hole of the rod groove 521 communicating with the first adsorption cavity 525, the larger the range in which the fitting rod 52 blows out the gas. The smaller the size of the through hole of the rod groove 521 communicating with the first adsorption cavity 525, the smaller the range in which the fitting rod 52 blows out the gas. When the range of the fitting lever 52 for blowing out the gas is large, the support for the roller support is stable, and the roller is not displaced. However, since the larger size of the through hole of the rod groove 521 communicating with the first adsorption cavity 525, a larger amount of gas needs to be supplied to effectively support the roller, so that the larger the size of the roller, the smaller the degree of reduction in the amount of gas blown out from the fitting rod 52.

When the weight of the roller is heavier, more gas is needed to push the roller to be placed in the groove on the inner surface of the outer ring, so that the phenomenon that the retainer main body cannot be inserted between the rollers due to the falling of the roller due to the dead weight is avoided.

According to the application, a certain amount of gas is blown out, and the gas amount is controlled, so that the distance of pushing the roller outwards by the gas and the expansion range of pushing the copper sleeve 527 outwards can be controlled, and the roller can be accurately pushed into the groove on the inner surface of the outer ring.

Meanwhile, the reduction degree of the air blown out of the assembly rod 52 is accurately controlled according to the pushing distance of the rollers, the size of the rollers and the weight of the rollers, so that the air can continuously push the rollers to be placed in the grooves on the inner surface of the outer ring, and the copper sleeve 527 cannot be continuously expanded in the process.

The control of the shape and dimensions in each step is determined by the detection means 4 in the stock step, the shaping step and the grinding step.

The detection means 4 transmit data to the control means. The control means determines the amount of gas blown out of the fitting rod 52 during the first blowing process based on the groove depth analysis of the groove in the inner surface of the outer ring. The distance the roller needs to push is determined according to the groove depth of the groove on the inner surface of the outer ring. The extent of decrease in the amount of air blown out by the fitting lever 52 during the second blowing is analytically determined based on the pushing distance of the roller, the size of the roller and the weight of the roller.

In the stock preparation step, the detecting device 4 detects whether the wall thickness of the inner metal section or the outer metal section deviates. The detecting means 4 detects whether the shape of the inner molded part or the outer molded part is deviated in the molding step. The detecting means 4 detects whether the thickness of the inner molded part or the thickness of the outer molded part deviates in the grinding step. The stability of the size and shape of the inner ring and the outer ring during production is ensured by the detection device 4. And detecting the shape and the size of the inner ring and the outer ring by a spot check mode after the production of the inner ring and the outer ring is finished, and transmitting data to a control device. The application detects the materials of the roller, the retainer main body and the retainer bottom ring and transmits the data to the control device.

The control device can strictly control the air blowing amount in the first air blowing process and the air blowing amount reducing range in the second air blowing process in advance, so that when the cylindrical roller bearing is assembled, the rollers can be smoothly arranged in the grooves on the inner surface of the outer ring, and the position deviation of the rollers is limited, so that the retainer main body can be smoothly inserted between the rollers.

In order to trap the rollers between the outer and inner rings, grooves are often provided in the outer and/or inner rings to accommodate the rollers. In order to improve the installation efficiency, the retainer and the rollers are firstly arranged in the outer ring, and then the inner ring is arranged. In order to enable the inner ring to be quickly assembled, grooves are often not formed in the outer surface of the inner ring for accommodating the rollers, so that the conventional bearing is often formed in the inner surface of the outer ring for accommodating the rollers.

The rollers cannot be directly placed in the grooves on the inner surface of the outer ring, so that coaxial assembly among the rollers, the retainer, the outer ring and the inner ring cannot be realized during automatic assembly. The assembly of such bearings is often performed manually.

In the application, the adsorption and pushing of the roller are completed through the adsorption of the copper sleeve 527 and the expansion of the copper sleeve 527. The control device is used for controlling the air blowing amount in the two air blowing processes, so that the rollers can be completely and accurately placed in the grooves on the inner surface of the outer ring at one time, and the coaxial assembly among the rollers, the retainer, the outer ring and the inner ring is completed.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (8)

1. A production process of a cylindrical roller bearing is characterized in that: when the cylindrical roller bearing is produced, the method comprises the following steps of the production process:

The preparation step comprises the following steps: cutting metal pipes with different diameters and thicknesses into a plurality of inner metal sections and outer metal sections; respectively heating the inner metal section and the outer metal section by electromagnetic induction coils;

And (3) forming: the inner metal section and the outer metal section are respectively arranged in each forming device (1); the first forming wheel (11) and the second forming wheel (12) roll two sides of the inner metal section and the outer metal section into preset shapes to form an inner forming piece and an outer forming piece;

Grinding: respectively grinding the end surfaces of the inner molding piece and the outer molding piece; grinding the inner and outer surfaces of the inner molding member to form an inner ring and grinding the inner and outer surfaces of the outer molding member to form an outer ring;

Assembling: the outer ring is arranged on a conveying frame (51) to finish conveying; on one side of the outer ring, the assembling rod (52) adsorbs the roller and moves to the outer ring, the assembling rod (52) blows out gas to expand the copper sleeve (527), and the gas and the copper sleeve (527) push the roller into the outer ring; a first clamping jaw (54) is arranged in the retainer main body between the rollers; on the other side of the outer ring, a conveying rod (53) is installed into the inner ring, a first sucker (55) is moved into the retainer bottom ring to mutually lock the retainer bottom ring and the retainer main body;

In the assembly step, the assembly rod (52) has two blowing processes:

A first blowing process: the assembly rod (52) blows a certain amount of gas, the gas pushes the roller outwards and pushes the copper sleeve (527) to expand outwards, and the roller is arranged in a groove on the inner surface of the outer ring;

and a second blowing process: the amount of gas blown out of the assembly rod (52) is reduced by 35% -55%, the gas pushes the roller outwards, and the copper sleeve (527) stops expanding outwards;

the amount of the air blown out by the assembly rod (52) and the expansion degree of the copper sleeve (527) in the first air blowing process are positively related to the size of the outer ring; the deeper the depth of the groove on the inner surface of the outer ring is, the larger the amount of the air blown out by the assembling rod (52) is, and the larger the expansion degree of the copper sleeve (527) is; the shallower the depth of the groove on the inner surface of the outer ring, the smaller the amount of the gas blown out by the assembly rod (52), and the smaller the expansion degree of the copper sleeve (527);

the degree of reduction of the amount of air blown out by the assembly rod (52) in the second air blowing process is determined according to the pushing distance of the roller, the size of the roller and the weight of the roller;

the longer the roller pushing distance is, the greater the degree of reduction in the amount of air blown out by the fitting lever (52);

The larger the size of the roller, the larger the range of the gas blown out by the assembly bar (52), and the smaller the degree of reduction in the amount of gas blown out by the assembly bar (52);

The heavier the weight of the roller, the less the amount of blown air from the mounting bar (52) is reduced.

2. The production process of the cylindrical roller bearing according to claim 1, characterized in that: the preparation step is preceded by a modeling step:

The control device models according to the size and shape of the inner ring and the outer ring to obtain final model data, adds grinding allowance on the final model data to obtain intermediate model data, and adds rolling deformation on the intermediate model data to obtain initial material model data.

3. The production process of the cylindrical roller bearing according to claim 2, characterized in that: the modeling step and the material preparation step further comprise a calculating step:

the control device determines the diameter, thickness and cutting interval of the metal tube in the material preparation step according to the initial material model data; determining the shape, size and rolling deformation of the first forming wheel (11) and the second forming wheel (12) in the forming step according to the intermediate model data; and determining the shape, the size and the grinding amount of the grinding wheel for grinding in the grinding step according to the final model data.

4. The production process of the cylindrical roller bearing according to claim 1, characterized in that:

In the material preparation step: a plurality of metal tubes are stacked on a cutting device (21); the second power device (23) presses down and fixes the metal tube, and the cutting equipment (21) cuts the metal tube into a plurality of inner metal sections or outer metal sections; the first power device (22) pushes the inner metal section or the outer metal section into the vibration disc (24); the vibrating plate (24) conveys the inner metal section or the outer metal section to the heating device (6).

5. The process for producing a cylindrical roller bearing according to claim 4, wherein:

In the material preparation step: the inner metal section or the outer metal section is arranged in the conveying channel (61); a third power device (63) pushes the inner metal section or the outer metal section to move along the conveying channel (61); an electromagnetic induction coil arrangement (62) heats the inner metal section or the outer metal section.

6. The production process of the cylindrical roller bearing according to claim 5, wherein:

In the forming step: the clamping device (17) moves the inner metal section or the outer metal section into the forming position (15); the second forming wheel (12) is close to and contacts with the outer surface of the inner metal section or the outer surface of the outer metal section; the driving mechanism (16) drives the first forming wheel (11) to be close to and in contact with the inner surface of the inner metal section or the inner surface of the outer metal section; the driving mechanism (16) drives the first forming wheel (11) to rotate and move to finish rolling of the inner metal section or the outer metal section; after the inner or outer metal segments are rolled into the inner or outer profile, the clamping device (17) moves the inner or outer profile out of the forming station (15).

7. The process for producing a cylindrical roller bearing according to claim 6, wherein:

in the grinding step: a first grinding wheel (32) grinds an end face of the inner molding or an end face of the outer molding; the first clamping mechanism (33) clamps the outer surface of the inner molding piece or the outer surface of the outer molding piece; a second grinding wheel (34) grinds the inner surface of the inner molding and the inner surface of the outer molding; the first clamping mechanism (33) is used for clamping the inner surface of the inner molding piece or the inner surface of the outer molding piece in a switching manner; a third grinding wheel (35) grinds the inner molding outer surface and the outer molding outer surface; the inner molding piece or the outer molding piece is ground to form an inner ring or an outer ring.

8. A process for producing a cylindrical roller bearing according to claim 3, wherein:

The control of the shape and the size in each step is determined by a detection device (4) in the material preparation step, the forming step and the grinding step; the detection device (4) transmits data to the control device; the control device determines the amount of air blown out by the assembly rod (52) in the first air blowing process according to the groove depth analysis of the groove on the inner surface of the outer ring; determining the distance to be pushed by the roller according to the groove depth of the groove on the inner surface of the outer ring; the reduction range of the amount of the blown gas of the fitting lever (52) in the second blowing process is analytically determined based on the pushing distance of the roller, the size of the roller and the weight of the roller.