Forging stepper die for bearing machining

Abstract

The present invention discloses a forging stepping die for bearing processing, which relates to the technical field of bearing processing, and comprises a lower die seat and a pull rod, wherein the bottoms of the lower die seat and the pull rod are fixedly mounted on the surface of a forging machine, and a preformed pad is fixedly connected to the middle position of the top of the lower die seat. The forging stepping die for bearing processing can achieve the reset of the upper die seat, clamp the blank by a clamping device, and the upper die seat moves down again to roughen the blank, and the downward movement of the preforming punch allows the blank at point B to be squeezed into the inner side of the preforming concave die. At the same time, the extrusion impact of the preforming punch cooperates with the support and limit of the ejection block, so that the inner and outer surfaces of the blank are extruded and formed at the same time, the stripping ejector rod moves up so that the blank is pushed to point C, and the downward movement of the bottom cutting punch punches the bottom of the blank, which solves the problem that roughening, preforming, and bottom cutting and flat punching in bearing processing all adopt a single flow process and have low forming efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing, in particular to a forging stepping die used for bearing processing. Background Art

[0002] The bearing ring is an annular part of a radial rolling bearing with one or more raceways. It is a tool that makes the blank into a workpiece with a specific shape and size under the action of external force. The bearing ring processing mold has a specific contour or inner cavity shape. The application of a contour shape with a cutting edge can make the blank separate according to the contour shape, and the application of the inner cavity shape can make the blank obtain a corresponding three-dimensional shape. The mold generally consists of a movable mold and a fixed mold. The two parts can be separated or combined. The workpiece is taken out when separated, and the blank is injected into the mold cavity for forming when closed. The bearing processing mold is a precision tool with a complex shape and needs to withstand the expansion force of the blank. It has high requirements on the structural strength, rigidity, surface hardness, surface roughness and processing accuracy of the mold. Bearing ring forging is a rough processing process. The manufacturing process currently used in the market is blanking, heating, roughening, preforming, bottom cutting, flat punching, and rolling. Among them, roughening, preforming, bottom cutting, flat punching all use a single flow process, requiring 3 people and 3 equipment. The Chinese patent announcement number is: CN114309422A, which discloses "A bearing ring forging die". In this patent, a driving mechanism is used to drive a driving rod to move the processed workpiece to the next workstation through a guide rail. There is no need to set up a robot to complete the transfer of stamped castings. The structure is relatively simple, and the function is achieved by the up and down movement of the upper die seat, and the cost is relatively low.

[0003] The existing forging stepper die used for bearing processing has structural design defects. The roughening, preforming, bottom cutting and flat punching in the bearing processing all adopt a single flow process with low forming efficiency, and the bearing ring casting is easily worn due to excessive friction during forging and stamping. Summary of the invention

[0004] The present invention provides a forging stepping die for bearing processing, which solves the problems mentioned in the above background technology.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a forging stepping die for bearing processing, comprising a lower die seat and a pull rod, the bottoms of the lower die seat and the pull rod are fixedly installed on the surface of a forging machine, a preformed pad is fixedly connected to the middle position of the top of the lower die seat, a preformed concave die is fixedly connected to the top of the preformed pad, an upper die seat is fixedly connected to the top of the pull rod, a preformed upper die cover is fixedly connected to the middle position of the bottom of the upper die seat, a preformed upper die cover is fixedly connected to the inner side of the preformed upper die cover, a preformed fixed sleeve is fixedly connected to the inner side of the preformed fixed sleeve, and a preformed punch is fixedly connected to the inner side of the preformed fixed sleeve, and further comprising:

[0006] A flow guide assembly, which is fixedly mounted on the inner side of the lower die seat, and is used for roughing and supporting the bearing ring blank and guiding and collecting excess lubricating oil. A bottom-cut lower die cover is press-fitted on the top of the flow guide assembly;

[0007] A lubrication assembly, which is fixedly mounted on the inner side of the upper die seat and is used for roughing and impacting the bearing ring blank and evenly spraying lubricating oil on the surface of the blank;

[0008] The lubrication assembly includes a flattened upper pier head, the upper part of the flattened upper pier head surface is fixedly installed on the inner side of the upper mold base, the upper mold base is fixedly connected to a telescopic cylinder near the flattened upper pier head, the output end of the telescopic cylinder is fixedly connected to a protective tube, the bottom of the protective tube is fixedly connected to a rubber ring, and the surface of the protective tube is fixedly connected to a bending tube.

[0009] Preferably, the inner side surface of the preforming die is slidably connected with a ejection block, the bottom of the ejection block is fixedly connected with a ejection cushion block, the bottom of the ejection cushion block is fixedly connected with a stripping ejector rod, the bearing ring blank is placed to point A through a slide, the casting blank is roughened at point B, preformed by stamping at point C, and bottom cutting and flat punching are completed at point D, the pull rod is used to drive the upper die seat to move downward close to the lower die seat, the lubrication assembly moves downward to wrap the high column structure blank, the lubrication assembly atomizes the lubricating oil and sprays it onto the surface of the blank to form an oil film, and the guide assembly collects excess lubricating oil.

[0010] Preferably, a bottom cutting pad is fixedly connected to the surface of the lower die seat away from the guide assembly, a bottom cutting die is fixedly connected to the top of the bottom cutting pad, and a bottom cutting lower die fixing sleeve is fixedly connected to the surface of the bottom cutting die.

[0011] Preferably, a stripping ring is provided directly above the fixed sleeve of the bottom cutting lower die, and the stripping ring is fixedly installed above the lower die seat through a support platform. A through hole is provided on the inner side of the stripping ring. The blank of the bearing ring is a high cylindrical structure formed by casting. When the blank is clamped to point B by the clamping device, in order to prevent the lubricating oil from adhering to the surface of the blank and causing the device and conveying to slide and stick, at this time, the surface of the blank is free of lubricating oil and is dry, and the opposite movement of the flattened upper pier head and the flattened lower pier head will cause the surface of the blank to be worn and stretched, and the subsequent preforming and bottom cutting punching require lubricating oil to reduce friction.

[0012] Preferably, a preforming gasket is fixedly connected at a position between the preforming punch and the upper die seat, and a bottom cutting upper die cover is fixedly connected at a position on the inner side of the upper die seat away from the flattened upper pier head.

[0013] Preferably, the inner side surface of the bottom cutting upper die cover is fixedly connected with a bottom cutting upper die fixing sleeve, the inner side surface of the bottom cutting upper die fixing sleeve is fixedly connected with a bottom cutting punch, and the position between the bottom cutting punch and the upper die seat is fixedly connected with a bottom cutting gasket.

[0014] Preferably, the guide assembly includes a fixed block, which is fixedly mounted on the inner side of the lower die base, an inner cavity is opened at the upper position of the inner side of the fixed block, and a mesh ring is fixedly connected to the inner side of the fixed block. The flattened upper pier head and the flattened lower pier head move toward each other under the drive of the forging machine, so that the height of the billet is reduced and the diameter is increased. The forearm and the rear arm move in a straight line along the forging machine under the drive of the servo conveying equipment, and the cylinders on the surfaces of the forearm and the rear arm control the jaw seats to move close to the billet. The oppositely arranged grasping clamp assemblies clamp the billet, and the billet is clamped to point A, point B, point C and point D in turn. The billet is forged, preformed, and bottom-cut and punched in turn.

[0015] Preferably, the guide assembly also includes a guide pipe, the surface of which is fixedly installed on the bottom of the inner side of the fixed block, the top of the fixed block is fixedly connected with a flattened lower pier head, and the surface of the flattened lower pier head is provided with a through hole with an axis inclined to the ground.

[0016] A blank clamping device for a forging stepping die comprises a front arm and a rear arm, the front arm and the rear arm are respectively arranged on the front and the back of a forging machine, the bottoms of the front arm and the rear arm are fixedly mounted on the output end of a servo conveying device, the inner sides of the front arm and the rear arm are fixedly connected to a cylinder, the inner side of the cylinder is slidably connected to a clamp claw seat, and further comprises:

[0017] A gripper assembly, the gripper assembly is fixedly mounted on the outer surface of the jaw seat, and is used for gripping the bearing ring blank and clamping and limiting the blank during roughing, preforming and bottom cutting and punching. The blank is forged roughed, stamped preformed and bottom cutting and flat punching in sequence. During roughing to stamping preforming, the diameter of the blank changes significantly, from small to large. During stamping preforming to bottom cutting and flat punching, the diameter of the blank decreases slightly. Using a gripper assembly of a fixed size to clamp the blank will cause the blank to be unable to be reliably clamped. In the device, the rotation support of the five rotating shafts enables the U-shaped plate, the two first rotating plates and the two second rotating plates to form a closed structure;

[0018] The grasping forceps assembly includes a U-shaped plate and a rotating shaft. One side of the U-shaped plate is fixedly mounted on the outer surface of the jaw seat. A hydraulic cylinder is fixedly connected to the middle position of the inner side of the U-shaped plate. There are multiple rotating shafts. The output end of the hydraulic cylinder is fixedly connected to the middle position of the surface of one of the rotating shafts. The surface of the rotating shaft is rotatably connected to a second rotating plate.

[0019] Preferably, the grasping clamp assembly also includes a first rotating plate, one side of which is rotatably mounted on the surface of the rotating shaft close to the U-shaped plate, and the other side of the first rotating plate is rotatably mounted on the surface of the rotating shaft close to the second rotating plate. When the flattened upper pier head and the flattened lower pier head move toward each other for the first time, the bottom of the flattened lower pier head does not contact the blank, and the protective cylinder moves downward under the drive of the telescopic cylinder. At this time, the second rotating plate is away from the blank, and the bending tube slides downward on the inner side of the flattened upper pier head. The downward movement of the protective tube completely covers the blank, and the rubber ring is embedded in the annular groove on the top of the flattened lower pier head. The bending tube diffuses and sprays the lubricating oil into the protective tube, and the surface of the blank is evenly covered with an oil film. The protective tube moves up and resets, and the cross groove plate clamps the blank again.

[0020] Preferably, the grasping forceps assembly further includes two rubber plates, and the rubber plates are fixedly mounted on the surfaces of the U-shaped plate, the first rotating plate and the second rotating plate.

[0021] Preferably, there are two second rotating plates, and a transverse groove plate is fixedly connected to a side of the second rotating plate away from the U-shaped plate. A guide groove is provided on the surface of the transverse groove plate, and a plurality of the guide grooves are provided.

[0022] The present invention provides a forging stepping die for bearing processing, which has the following beneficial effects:

[0023] 1. The forging stepping die used for bearing processing has the upper die seat reset, the blank is clamped by the clamping device, the upper die seat moves down again to roughen the blank, the downward movement of the preforming punch allows the blank at point B to be squeezed into the inner side of the preforming die, and at the same time, the extrusion impact of the preforming punch cooperates with the support limit of the ejector block, so that the inner and outer surfaces of the blank are extruded and formed at the same time, the stripping ejector rod moves up to push the blank to point C, and the bottom cutting punch moves down to punch the bottom of the blank, which solves the problem of low forming efficiency in roughening, preforming, bottom cutting and flat punching in bearing processing using a single flow process.

[0024] 2. The forging stepper die used for bearing processing has an upper die seat that moves downward. At this time, the flattened upper pier head is located above the blank. The telescopic cylinder controls the protective tube to move downward. The bending tube sprays the atomized lubricating oil onto the surface of the blank. An oil film is formed on the surface of the blank. The guide tube is connected to an external air pump. The excess dispersed lubricating oil enters the inner cavity under the guidance of the guide tube. A plurality of tiny holes are provided on the surface of the mesh ring. The lubricating oil dispersed in the gas condenses and is discharged by the guide tube, which solves the problem that the bearing ring casting is easily worn due to excessive friction during forging and stamping.

[0025] 3. The forging stepper die for bearing processing is provided with multiple cylinders and claw seats. The upper die seat is driven by the pull rod to move downward toward the lower die seat. When the lubrication assembly and the guide assembly are initially combined, the gripper assembly does not clamp the blank, so that the surface of the blank is evenly sprayed with lubricating oil. When the blank is roughened, the lubricating oil on the surface of the blank makes it unnecessary to add lubricating oil for subsequent pre-forming stamping and bottom cutting and punching, and the processing efficiency of the bearing ring is higher.

[0026] 4. The forging stepper die used for bearing processing has an adjustable angle between the two second rotating plates through the telescopic adjustment of the hydraulic cylinder. The surface of the transverse groove plate is in direct contact with the surface of the blank. The second rotating plate firmly clamps the blank under the drive of the hydraulic pressure. In a one-time forming process, there are blanks at points A, B, C and D. The servo conveying equipment drives multiple blanks to move to one point at the same time, so that when the upper die seat and the lower die seat are combined, multiple blanks are processed at the same time, thereby effectively improving the processing efficiency of the bearing ring and making the ring processing more precise.

[0027] 5. The forging stepper die used for bearing processing, during upsetting, the hydraulic cylinder controls the rotation of the second rotating plate, and the angle between the two second rotating plates is adjusted to increase, so that the blank is adapted to be clamped during upsetting, so that the forming accuracy of the ring is higher during upsetting, and the guide grooves opened on the surface of the transverse groove plate can contain lubricating oil. At the same time, the lateral setting of the guide grooves increases the resistance of the blank to the up and down jumping, making the blank more stable during upsetting and stamping, and flattening the upper pier head can prevent the lubricating oil from accumulating and slipping when the transverse groove plate clamps the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a plan view of the whole forging stepping die for bearing processing of the present invention;

[0029] Figure 2 It is a first partial stereoscopic view of the forging stepping die for bearing processing of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the flow guide assembly of the present invention;

[0031] Figure 4 A second partial stereoscopic view of the forging stepping die for bearing processing of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the lubrication assembly of the present invention;

[0033] Figure 6 A three-dimensional diagram of a blank clamping device for a forging step die according to the present invention;

[0034] Figure 7 It is a plan view of the blank clamping device for forging stepping die of the present invention;

[0035] Figure 8 It is a schematic diagram of the overall structure of the grasping forceps assembly of the present invention;

[0036] Fig. 9 It is a partial structural schematic diagram of the grasping forceps assembly of the present invention.

[0037] In the figure: 1, lower die seat; 11, cut bottom lower die cover; 2, guide assembly; 21, fixed block; 22, inner cavity; 23, mesh ring; 24, guide tube; 25, flattened lower pier head; 31, preformed pad; 32, preformed concave die; 33, stripping ejector rod; 34, ejector pad; 35, ejector block; 41, cut bottom pad; 42, cut bottom concave die; 43, cut bottom lower die fixed sleeve; 44, stripper ring; 5, upper die seat; 51, pull rod; 6, lubrication assembly; 61, flattened upper pier head; 62, telescopic cylinder; 63, protective cylinder; 64. Rubber ring; 65. Bending tube; 71. Preformed upper die cover; 72. Preformed fixing sleeve; 73. Preformed gasket; 74. Preformed punch; 81. Cut bottom upper die cover; 82. Cut bottom upper die fixing sleeve; 83. Cut bottom gasket; 84. Cut bottom punch; 91. Forearm; 92. Rear arm; 93. Cylinder; 94. Clamp claw seat; 95. Grasping clamp assembly; 951. U-shaped plate; 952. Hydraulic cylinder; 953. Rotating shaft; 954. First rotating plate; 955. Second rotating plate; 956. Transverse groove plate; 957. Rubber plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] First embodiment: Figure 1 As shown, the present invention provides a technical solution: a forging stepping die for bearing processing, comprising a lower die seat 1 and a pull rod 51, the bottoms of the lower die seat 1 and the pull rod 51 are fixedly installed on the surface of the forging machine, the middle position of the top of the lower die seat 1 is fixedly connected with a preforming cushion block 31, the top of the preforming cushion block 31 is fixedly connected with a preforming concave die 32, the top of the pull rod 51 is fixedly connected with an upper die seat 5, the middle position of the bottom of the upper die seat 5 is fixedly connected with a preforming upper die cover 71, the inner side surface of the preforming upper die cover 71 is fixedly connected with a preforming fixed sleeve 72, the inner side surface of the preforming fixed sleeve 72 is fixedly connected with a preforming punch 74, and also includes:

[0040] The flow guide component 2 is fixedly installed on the inner side of the lower die seat 1. The flow guide component 2 is used for roughing support of the bearing ring blank and guiding and collecting excess lubricating oil. The top of the flow guide component 2 is press-fitted with a bottom-cut lower die cover 11;

[0041] A lubrication assembly 6, which is fixedly mounted on the inner side of the upper die seat 5, and is used for roughing and impacting the bearing ring blank and evenly spraying lubricating oil on the surface of the blank;

[0042] The inner side surface of the preforming die 32 is slidably connected with a material ejection block 35, the bottom of the material ejection block 35 is fixedly connected with a material ejection cushion block 34, and the bottom of the material ejection cushion block 34 is fixedly connected with a material ejection rod 33;

[0043] A bottom cutting pad 41 is fixedly connected to a position of the surface of the lower die seat 1 away from the guide assembly 2, a bottom cutting die 42 is fixedly connected to the top of the bottom cutting pad 41, and a bottom cutting lower die fixing sleeve 43 is fixedly connected to the surface of the bottom cutting die 42;

[0044] A stripping ring 44 is provided just above the bottom cutting die fixed sleeve 43. The stripping ring 44 is fixedly installed above the lower die base 1 through a support platform. A through hole is provided on the inner side of the stripping ring 44.

[0045] A preforming gasket 73 is fixedly connected between the preforming punch 74 and the upper die seat 5, and a bottom cutting upper die cover 81 is fixedly connected to the inner side of the upper die seat 5 away from the flattened upper pier head 61;

[0046] The inner side of the bottom cutting upper die cover 81 is fixedly connected with a bottom cutting upper die fixing sleeve 82 , the inner side of the bottom cutting upper die fixing sleeve 82 is fixedly connected with a bottom cutting punch 84 , and the position between the bottom cutting punch 84 and the upper die seat 5 is fixedly connected with a bottom cutting gasket 83 .

[0047] When in use, the bearing ring blank is placed at point A through the slide, the casting blank is roughened at point B, preformed by stamping at point C, and the bottom cutting and flat punching are completed at point D. The pull rod 51 is used to drive the upper die seat 5 to move downward close to the lower die seat 1, and the lubricating component 6 moves downward to wrap the blank with a high column structure. The lubricating component 6 atomizes the lubricating oil and sprays it onto the surface of the blank to form an oil film. The guide component 2 collects the excess lubricating oil, the upper die seat 5 is reset, and the blank is clamped by the clamping device. The upper die seat 5 moves downward again. The blank is roughened by the movement of the preforming punch 74, and the downward movement of the preforming punch 74 causes the blank at point B to be squeezed into the inner side surface of the preforming die 32. At the same time, the extrusion impact of the preforming punch 74 cooperates with the support limit of the ejector block 35, so that the inner and outer surfaces of the blank are extruded and formed at the same time, and the ejector rod 33 moves upward to push the blank to point C, and the downward movement of the bottom cutting punch 84 punches the bottom of the blank, which solves the problem of low forming efficiency in bearing processing due to the single flow process for roughening, preforming, bottom cutting and flat punching.

[0048] Second embodiment: Figure 1-Figure 5 As shown, the lubrication assembly 6 includes a flattened upper pier head 61, the upper position of the flattened upper pier head 61 is fixedly installed on the inner side of the upper die base 5, the upper die base 5 is fixedly connected to a telescopic cylinder 62 near the flattened upper pier head 61, the output end of the telescopic cylinder 62 is fixedly connected to a protective cylinder 63, the bottom of the protective cylinder 63 is fixedly connected to a rubber ring 64, and the surface of the protective cylinder 63 is fixedly connected to a bending tube 65;

[0049] The guide assembly 2 includes a fixed block 21, which is fixedly installed on the inner side of the lower mold base 1. An inner cavity 22 is opened at the upper position of the inner side of the fixed block 21. The inner side of the fixed block 21 is fixedly connected with a mesh ring 23. The guide assembly 2 also includes a guide pipe 24. The surface of the guide pipe 24 is fixedly installed on the bottom of the inner side of the fixed block 21. The top of the fixed block 21 is fixedly connected with a flattened lower pier head 25. The surface of the flattened lower pier head 25 is opened with a through hole whose axis is inclined to the ground.

[0050] When in use, the blank of the bearing ring is a high cylindrical structure formed by casting. When the blank is clamped to point B by the clamping device, in order to prevent the lubricating oil from adhering to the surface of the blank and causing the device and conveying to slide and stick, at this time, the surface of the blank is free of lubricating oil and is dry. The opposite movement of the flattened upper pier 61 and the flattened lower pier 25 will cause the surface of the blank to be worn and scratched, and the subsequent preforming and bottom cutting and punching require lubricating oil to reduce friction. In this device, the upper die seat 5 moves downward. At this time, the flattened upper pier 61 is at the At the upper position of the blank, the telescopic cylinder 62 controls the protective tube 63 to move downward, and the bending tube 65 sprays the atomized lubricating oil onto the surface of the blank, forming an oil film on the surface of the blank. The guide tube 24 is externally connected to an air pump, and the excess dispersed lubricating oil enters the inner cavity 22 under the guidance of the guide tube 24. A plurality of tiny holes are provided on the surface of the mesh ring 23, and the lubricating oil dispersed in the gas condenses and is discharged by the guide tube 24, thereby solving the problem that the bearing ring casting is easily worn due to excessive friction during forging and stamping.

[0051] The third embodiment: Figure 1 , Figure 6 , Figure 7 As shown, the blank clamping device for forging stepping die includes a front arm 91 and a rear arm 92, which are respectively arranged on the front and back of the forging machine, and the bottoms of the front arm 91 and the rear arm 92 are fixedly installed on the output end of the servo conveying device, and the inner side surfaces of the front arm 91 and the rear arm 92 are fixedly connected to the cylinder 93, and the inner side surface of the cylinder 93 is slidably connected to the clamp claw seat 94, and also includes:

[0052] The grasping clamp assembly 95 is fixedly mounted on the outer surface of the clamp claw seat 94. The grasping clamp assembly 95 is used for grasping the bearing ring blank and clamping and limiting the blank during roughing, preforming and bottom cutting and punching.

[0053] When in use, the flattened upper pier head 61 and the flattened lower pier head 25 move in opposite directions driven by the forging machine, so that the height of the blank is reduced and the diameter is increased. The front arm 91 and the rear arm 92 move in a straight line along the forging machine driven by the servo conveying equipment. The cylinder 93 on the surface of the front arm 91 and the rear arm 92 controls the jaw seat 94 to move close to the blank. The gripper assembly 95 arranged oppositely clamps the blank. The blank is clamped to point A, point B, point C and point D in turn, and the blank is forged and roughened in turn. , stamping preforming and bottom cutting and flat punching, the device is provided with multiple cylinders 93 and claw seats 94. The upper die seat 5 is driven by the pull rod 51 to move downward toward the lower die seat 1. When the lubrication component 6 and the guide component 2 are initially combined, the gripper assembly 95 does not clamp the blank, so that the surface of the blank is evenly sprayed with lubricating oil. When the blank is roughened, the lubricating oil on the surface of the blank makes it unnecessary to add lubricating oil for subsequent preforming stamping and bottom cutting and punching, and the bearing ring processing efficiency is higher.

[0054] Fourth embodiment: Figure 6-Figure 9 As shown, the grasping forceps assembly 95 includes a U-shaped plate 951 and a rotating shaft 953. One side of the U-shaped plate 951 is fixedly mounted on the outer surface of the jaw seat 94. A hydraulic cylinder 952 is fixedly connected to the middle position of the inner side of the U-shaped plate 951. There are multiple rotating shafts 953. The output end of the hydraulic cylinder 952 is fixedly connected to the middle position of the surface of one of the rotating shafts 953. The surface of the rotating shaft 953 is rotatably connected to a second rotating plate 955.

[0055] The grasping forceps assembly 95 also includes a first rotating plate 954, one side of which is rotatably mounted on the surface of the rotating shaft 953 close to the U-shaped plate 951, and the other side of the first rotating plate 954 is rotatably mounted on the surface of the rotating shaft 953 close to the second rotating plate 955; the grasping forceps assembly 95 also includes a rubber plate 957, there are two rubber plates 957, the rubber plates 957 are fixedly mounted on the surfaces of the U-shaped plate 951, the first rotating plate 954 and the second rotating plate 955; there are two second rotating plates 955, and a transverse groove plate 956 is fixedly connected to the side of the second rotating plate 955 away from the U-shaped plate 951, and a guide groove is opened on the surface of the transverse groove plate 956, and the number of the guide grooves is set to be multiple.

[0056] When in use, the blank is forged, preformed, and punched in sequence. During the process from forging to preforming, the diameter of the blank changes significantly, from small to large. During the process from preforming to punching, the diameter of the blank decreases slightly. Using a fixed-size gripper assembly 95 to clamp the blank will cause the blank to be unable to be reliably clamped. In the device, the rotation support of the five rotating shafts 953 enables the U-shaped plate 951, the two first rotating plates 954, and the two second rotating plates 955 to form a closed structure. The telescopic adjustment of the hydraulic cylinder 952 The angle between the two second rotating plates 955 is adjustable, and the surface of the transverse groove plate 956 is in direct contact with the surface of the blank. The second rotating plate 955 clamps the blank firmly under the drive of hydraulic pressure. In a one-time forming process, there are blanks at points A, B, C and D. The servo conveying equipment drives multiple blanks to one point at the same time, so that when the upper die base 5 and the lower die base 1 are combined, multiple blanks are processed at the same time, thereby effectively improving the processing efficiency of the bearing ring and making the ring processing more precise.

[0057] Fifth embodiment: Figure 5 , Figure 8 As shown, the upper position of the flattened upper pier head 61 is fixedly installed on the inner side of the upper die base 5, and the upper die base 5 is fixedly connected to a telescopic cylinder 62 near the flattened upper pier head 61, and the output end of the telescopic cylinder 62 is fixedly connected to a protective cylinder 63, the bottom of the protective cylinder 63 is fixedly connected to a rubber ring 64, and the surface of the protective cylinder 63 is fixedly connected to a bending tube 65;

[0058] One side of the first rotating plate 954 is rotatably mounted on the surface of the rotating shaft 953 close to the U-shaped plate 951, and the other side of the first rotating plate 954 is rotatably mounted on the surface of the rotating shaft 953 close to the second rotating plate 955. There are two rubber plates 957, and the rubber plates 957 are fixedly mounted on the surfaces of the U-shaped plate 951, the first rotating plate 954 and the second rotating plate 955; there are two second rotating plates 955, and a transverse groove plate 956 is fixedly connected to the side of the second rotating plate 955 away from the U-shaped plate 951, and a guide groove is opened on the surface of the transverse groove plate 956, and the number of the guide grooves is set to be multiple.

[0059] During use, when the flattened upper pier head 61 and the flattened lower pier head 25 move toward each other for the first time, the bottom of the flattened lower pier head 25 does not contact the blank, and the protective tube 63 moves downward under the drive of the telescopic cylinder 62. At this time, the second rotating plate 955 is away from the blank, and the bending tube 65 slides downward on the inner side of the flattened upper pier head 61. The downward movement of the protective tube 63 completely covers the blank, and the rubber ring 64 is embedded in the annular groove at the top of the flattened lower pier head 25. The bending tube 65 sprays the lubricating oil into the protective tube 63, and the surface of the blank is evenly covered with an oil film. The protective tube 63 moves up and resets. The transverse groove plate 956 clamps the blank again. During roughening, the hydraulic cylinder 952 controls the second rotating plate 955 to rotate. The angle between the two second rotating plates 955 is adjusted to increase, so that the blank can be clamped during roughening, and the forming accuracy of the ring is higher during roughening. The guide groove on the surface of the transverse groove plate 956 can contain lubricating oil. At the same time, the lateral setting of the guide groove increases the resistance of the blank to the up and down jumping, making the blank more stable during roughening and stamping. Flattening the upper pier head 61 can prevent the lubricating oil from accumulating and slipping when the transverse groove plate 956 clamps the blank.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A forging stepping die for bearing processing, comprising a lower die base (1) and a pull rod (51), wherein the bottoms of the lower die base (1) and the pull rod (51) are fixedly mounted on the surface of a forging machine, and characterized in that: A preformed cushion block (31) is fixedly connected to the middle position of the top of the lower die base (1), a preformed concave die (32) is fixedly connected to the top of the preformed cushion block (31), an upper die base (5) is fixedly connected to the top of the pull rod (51), a preformed upper die cover (71) is fixedly connected to the middle position of the bottom of the upper die base (5), a preformed fixed sleeve (72) is fixedly connected to the inner side of the preformed upper die cover (71), and a preformed punch (74) is fixedly connected to the inner side of the preformed fixed sleeve (72), and further comprising: A flow guide component (2), the flow guide component (2) being fixedly mounted on the inner side surface of the lower die base (1), the flow guide component (2) being used for roughing and supporting the bearing ring blank and guiding and collecting excess lubricating oil; The flow guide assembly (2) comprises a fixed block (21), the fixed block (21) being fixedly mounted on the inner side surface of the lower mold base (1), an inner cavity (22) being provided above the inner side surface of the fixed block (21), and a mesh ring (23) being fixedly connected to the inner side surface of the fixed block (21); The flow guide assembly (2) further comprises a flow guide pipe (24), the surface of the flow guide pipe (24) being fixedly mounted on the bottom of the inner side surface of the fixing block (21), the top of the fixing block (21) being fixedly connected to a flattened lower pier head (25), the surface of the flattened lower pier head (25) being provided with a through hole with an axis inclined to the ground; A lubrication assembly (6), the lubrication assembly (6) being fixedly mounted on the inner side surface of the upper die seat (5), the lubrication assembly (6) being used for roughing and impacting the bearing ring blank and for evenly spraying lubricating oil on the surface of the bearing ring blank; The lubrication assembly (6) comprises a flattened upper pier head (61), the upper portion of the surface of the flattened upper pier head (61) being fixedly mounted on the inner side surface of the upper die seat (5), the upper die seat (5) being fixedly connected to a telescopic cylinder (62) at a position close to the flattened upper pier head (61), the output end of the telescopic cylinder (62) being fixedly connected to a protective cylinder (63), the bottom of the protective cylinder (63) being fixedly connected to a rubber ring (64), the surface of the protective cylinder (63) being fixedly connected to a bending tube (65), the bending tube (65) spraying atomized lubricating oil onto the surface of the bearing ring blank.

2. The forging stepping die for bearing processing according to claim 1 is characterized in that: The inner side surface of the preforming concave die (32) is slidably connected to a material ejection block (35), the bottom of the material ejection block (35) is fixedly connected to a material ejection cushion block (34), and the bottom of the material ejection cushion block (34) is fixedly connected to a material ejection rod (33).

3. The forging stepping die for bearing processing according to claim 2 is characterized in that: A bottom cutting pad (41) is fixedly connected to a position of the surface of the lower die seat (1) away from the guide assembly (2), a bottom cutting die (42) is fixedly connected to the top of the bottom cutting pad (41), and a bottom cutting lower die fixing sleeve (43) is fixedly connected to the surface of the bottom cutting die (42).

4. The forging stepping die for bearing processing according to claim 3 is characterized in that: A preforming gasket (73) is fixedly connected at a position between the preforming punch (74) and the upper die seat (5), and a bottom cutting upper die cover (81) is fixedly connected at a position of the inner side surface of the upper die seat (5) away from the flattened upper pier head (61).

5. The forging stepping die for bearing processing according to claim 4 is characterized in that: The inner side surface of the bottom cutting upper die cover (81) is fixedly connected to a bottom cutting upper die fixing sleeve (82), the inner side surface of the bottom cutting upper die fixing sleeve (82) is fixedly connected to a bottom cutting punch (84), and a bottom cutting gasket (83) is fixedly connected at a position between the bottom cutting punch (84) and the upper die seat (5).

6. A blank holding device for a forging stepping die for bearing machining according to claim 1, comprising a front arm (91) and a rear arm (92), characterized in that: The front arm (91) and the rear arm (92) are respectively arranged on the front and back of the forging machine, the bottoms of the front arm (91) and the rear arm (92) are fixedly installed on the output end of the servo conveying device, the inner side surfaces of the front arm (91) and the rear arm (92) are fixedly connected to the cylinder (93), and the inner side surface of the cylinder (93) is slidably connected to the clamp claw seat (94), and further comprising: a gripper assembly (95), the gripper assembly (95) being fixedly mounted on the outer surface of the jaw seat (94), the gripper assembly (95) being used for gripping the bearing ring blank and for clamping and limiting the blank during roughing, preforming and bottom cutting and punching; when the lubrication assembly (6) and the guide assembly (2) are initially combined, the gripper assembly (95) does not clamp the bearing ring blank, so that the surface of the bearing ring blank is evenly sprayed with lubricating oil; The grasping forceps assembly (95) comprises a U-shaped plate (951) and a rotating shaft (953), one side of the U-shaped plate (951) is fixedly mounted on the outer surface of the jaw seat (94), a hydraulic cylinder (952) is fixedly connected to the middle position of the inner side surface of the U-shaped plate (951), there are a plurality of rotating shafts (953), an output end of the hydraulic cylinder (952) is fixedly connected to the middle position of the surface of one of the rotating shafts (953), and a second rotating plate (955) is rotatably connected to the surface of the rotating shaft (953); There are two second rotating plates (955), and a transverse groove plate (956) is fixedly connected to one side of the second rotating plate (955) away from the U-shaped plate (951). A guide groove is provided on the surface of the transverse groove plate (956). A plurality of guide grooves are provided. The guide grooves provided on the surface of the transverse groove plate (956) can store lubricating oil. At the same time, the lateral arrangement of the guide grooves increases the resistance of the bearing ring blank to the up and down bouncing, so that the bearing ring blank is more stable when being roughened and preformed.

7. The blank clamping device according to claim 6, characterized in that: The grasping forceps assembly (95) further comprises a first rotating plate (954), one side of the first rotating plate (954) being rotatably mounted on the surface of the rotating shaft (953) close to the U-shaped plate (951), and the other side of the first rotating plate (954) being rotatably mounted on the surface of the rotating shaft (953) close to the second rotating plate (955).

8. The blank clamping device according to claim 7, characterized in that: The grasping forceps assembly (95) further comprises a rubber plate (957), wherein the number of the rubber plates (957) is two, and the rubber plates (957) are fixedly mounted on the surfaces of the U-shaped plate (951), the first rotating plate (954), and the second rotating plate (955).

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