Ball bearing ferrule forging device and method

Abstract

The invention discloses a ball bearing ring forging device and method, and relates to the technical field of bearing ring machining, the ball bearing ring forging device comprises a core shaft, a hammering mechanism and a transposition mechanism, the core shaft is erected above a workbench, and the core shaft is used for sleeving a to-be-forged annular forge piece; the hammering mechanism comprises a hammering head and a hammering driving part, and the hammering head is located on the side, away from the workbench, of the mandrel; the transposition mechanism comprises a transposition assembly and a clamping assembly, the transposition assembly is in transmission connection with the core shaft, the transposition assembly is used for driving the core shaft to rotate periodically in a one-way mode around the axis of the core shaft, the clamping assembly is in transmission connection with the transposition assembly, and the clamping assembly comprises a clamping block; when the transposition assembly drives the central spindle to rotate in one direction, the clamping block in the clamping assembly is clamped in the gap between the central spindle and the annular forge piece and synchronously rotates in one direction along with the central spindle. According to the ball bearing ferrule forging device, uniform transposition of annular forgings can be achieved, and the broaching effect of the forgings is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing ring processing, and in particular relates to a ball bearing ring forging device and method. Background Art

[0002] Ball bearing rings are annular parts of radial rolling bearings with raceways. They are one of the important components of bearings. They are usually made of materials such as steel, copper or ceramics, and have high strength, high wear resistance and good corrosion resistance. Among the processing methods of bearing rings, the most common is forging, which deforms the metal blank by applying high temperature and high pressure to obtain forged parts with mechanical properties such as high strength, high hardness and high toughness.

[0003] In the forging process of existing large bearing rings, the operator usually clamps the raw material ingot of the bearing ring for free forging. The basic process of free forging includes upsetting, punching and core shaft expansion, and then the ring is rolled to the required size. In the process of core shaft expansion, the ring forging on the core shaft needs to be rotated and adjusted continuously so that the part to be hammered of the forging faces the hammer head and is hammered repeatedly, thereby increasing the inner hole of the ring forging and reducing the wall thickness of the ring forging. In the existing ring forging, when the core shaft is expanded, the rotation position of the ring forging needs to be manually adjusted with the help of pliers, which is inconvenient to operate and has low indexing accuracy, affecting the hammering uniformity of the overall wall thickness of the forging, and the close proximity to the high-temperature forging increases the operator's operating risk factor. Summary of the invention

[0004] The purpose of the present invention is to provide a ball bearing ring forging device and method with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: In a first aspect, the present invention provides a ball bearing ring forging device, comprising: A mandrel, which is mounted above the workbench and is used to sleeve the annular forging to be forged; A hammer mechanism, the hammer mechanism comprising a hammer head and a hammer driving member, the hammer head being located on a side of the mandrel away from the workbench, and driven by the hammer driving member, the hammer head repeatedly hammers the outer ring wall of the annular forging; The indexing mechanism comprises an indexing assembly and a clamping assembly, the indexing assembly is in driving connection with the mandrel, the indexing assembly is used to drive the mandrel to unidirectionally periodically rotate around the axis of the mandrel, the clamping assembly is in driving connection with the indexing assembly, and the clamping assembly comprises a clamping block; When the transfer assembly drives the mandrel to rotate unidirectionally, the clamping block in the clamping assembly is clamped in the gap between the mandrel and the annular forging and rotates unidirectionally synchronously with the mandrel; when the transfer assembly drives the mandrel to rotate unidirectionally to the maximum angular displacement, the clamping block rotates in the opposite direction to the initial position and is spaced apart from the annular forging.

[0006] As a further optimization scheme of the present invention, the core shaft is fixedly sleeved on the transmission shaft, one end of the transmission shaft is rotatably connected to the first bracket, the first bracket is fixedly set on the workbench, the other end of the transmission shaft is fixedly provided with a plug-in shaft, the plug-in shaft is plugged into the main shaft through a plug-in protrusion, the main shaft is rotatably connected to the second bracket, the second bracket is fixedly set on the workbench, wherein the axis centerline of the transmission shaft is colinear with the axis centerline of the main shaft, and a baffle is provided on the edge of one end of the core shaft away from the main shaft.

[0007] As a further optimization scheme of the present invention, the transfer assembly includes a swing arm driving member, a swing arm, an active ratchet, an active ratchet, a driven ratchet and a driven ratchet, the output end of the swing arm driving member is rotatably connected to the outer end of the swing arm, the inner end of the swing arm is fixedly connected to a collar, the collar is sleeved on the main shaft, wherein the rotation axis centerline of the collar is colinear with the axis centerline of the main shaft, the swing arm is rotatably connected to the active ratchet through a support block, the active ratchet is meshed with the active ratchet for transmission, the active ratchet is fixedly arranged on the main shaft and is located on the side of the second bracket facing the core shaft, the main shaft is located on the side of the second bracket away from the core shaft and is fixedly provided with a driven ratchet, the driven ratchet is rotatably connected to the second bracket, and the driven ratchet is meshed and abutted with the driven ratchet, wherein torsion springs are respectively sleeved on the rotation axes of the active ratchet and the driven ratchet.

[0008] As a further optimization solution of the present invention, the collar is rotatably connected to the main shaft, and the collar is located on a side of the active ratchet adjacent to the core shaft.

[0009] As a further optimization scheme of the present invention, the clamping assembly further comprises a traction rod, a traction connection assembly, a guide rail seat, a traction block and a clamping drive assembly, the second bracket is fixedly provided with a guide rail seat on the side facing the core shaft, a slide groove is provided on the guide rail seat, a slider is fixedly connected to the traction block, the slider is slidably connected to the guide rail seat through the slide groove, the side end of the swing arm is fixedly connected with the traction rod, the traction connection assembly is arranged in the traction block, the traction rod is transmission-connected to the traction block through the traction connection assembly, the traction block is slidably connected with a clamping block on the side facing the core shaft, the output end of the clamping drive assembly is transmission-connected to the clamping block, and the clamping drive assembly is used to drive the clamping block to switch between the clamping position and the initial position; Wherein, the traction rod is an arc-shaped rod, and the center of the arc-shaped rod and the center of the trajectory of the slide groove coincide with the axis center line of the core shaft respectively.

[0010] As a further optimization scheme of the present invention, the traction connection assembly includes a traction claw, a pressure block, a push rod, a sliding seat and a wedge block, the traction rod one end away from the swing arm is rotatably connected with the traction claw, and a torsion spring is sleeved on the rotating shaft of the traction claw and the traction rod, and a cavity is opened in the traction block, and the sliding seat is slidably connected with the traction block through the cavity, the inner end of the sliding seat is fixedly connected to the traction block through the first spring, and the outer end of the sliding seat is fixedly connected with the push rod, and the connecting end of the push rod and the sliding seat has a step surface, and a second spring is symmetrically arranged on both sides of the sliding seat, one end of the second spring is fixedly connected to the traction block, and the other end of the second spring is fixedly connected to the pressure block, the arc convex surface of the pressure block is frictionally engaged with the side surface of the traction claw, and a wedge block is arranged at one end of the guide rail seat adjacent to the swing arm, the wedge block is located in the slide groove, and the outer end of the push rod is frictionally engaged with the wedge surface of the wedge block.

[0011] As a further optimization scheme of the present invention, the clamping block is sleeved on the outside of the traction block, and an air cavity is formed between the traction block and the clamping block, the clamping drive assembly includes an air pump and a telescopic tube, the output end of the air pump is connected to the telescopic tube, and the other end of the telescopic tube is connected to the air cavity area through a ventilation pipe opened inside the traction block.

[0012] As a further optimization scheme of the present invention, a blanking opening is provided on the workbench, the blanking opening is located below the core shaft, a blanking plate is rotatably connected to the workbench, the blanking plate is located in the blanking opening, and the position of the rotatable connection end of the blanking plate and the workbench is higher than the table top of the workbench, the blanking end of the blanking plate is located below the workbench, and a collection box is also provided below the workbench, and the collection opening of the collection box is located below the blanking end of the blanking plate; The bearing ring forging device also includes a blanking assembly, which includes a blanking drive and a support block. The blanking drive is transmission-connected to the support block. When driven by the blanking drive, the support block is used to lift and drop the blanking end of the blanking plate.

[0013] As a further optimization scheme of the present invention, the blanking drive component includes an abutment plate, a transition shaft and a support rod. The side surface of the abutment plate is in frictional contact with the tooth surface of the driven ratchet. The end of the abutment plate away from the driven ratchet passes through a clearance groove to the lower position of the workbench and is fixedly connected with the transition shaft. The side end of the transition shaft is fixedly connected with a support rod, and the end of the support rod close to the blanking plate is fixedly connected to the support block, wherein the transition shaft is rotatably set on the base of the workbench, and a torsion spring is provided between the rotation position of the transition shaft and the base.

[0014] In a second aspect, the present invention further provides a forging method using the above-mentioned ball bearing ring forging device, comprising the following steps: S1. Sleeve the annular forging on the mandrel, start the air pump, and move the clamping block away from the guide rail seat until the clamping end of the clamping block extends into the maximum gap between the annular forging and the mandrel and clamps with the annular forging; S2, start the swing arm driving member, so that the swing arm drives the traction rod to swing to the initial position, and the traction end of the traction rod is connected to the traction block through the traction connection assembly; S3, the swing arm driving member drives the swing arm to swing in the opposite direction, and the active ratchet meshes with the active ratchet wheel to rotate, so that the transmission shaft drives the core shaft to rotate in one direction. At the same time, the traction rod pulls the traction block, so that the traction block drives the clamping block to rotate synchronously in one direction; S4. When the swing arm swings in the opposite direction to the maximum angular displacement, the traction rod is separated from the traction block, and the air pump is turned off. The traction block slides down under the action of gravity until the clamping block is reset to the maximum gap between the annular forging and the mandrel; S5. Start the hammer driving member to make the hammer head hammer the outer ring wall of the annular forging.

[0015] The present invention has at least the following beneficial effects: the present invention provides a ball bearing ring forging device and method, wherein the ball bearing ring forging device is provided with a core shaft, a hammer mechanism and a transfer mechanism, and the clamping block in the transfer mechanism is used to limit the position between the annular forging and the core shaft, so that the swing arm is driven by the meshing of the active ratchet and the active ratchet wheel, and extends into the gap between the core shaft and the annular forging through the clamping block, and the relative position between the core shaft and the annular forging is fixed, so that when the traction rod and the traction block drive the clamping block to transfer clockwise, the core shaft drives the annular forging to transfer clockwise, in order to ensure that the annular forging will not be misaligned with the core shaft during the transfer process; Moreover, after the transfer is completed, the traction rod is separated from the traction block, and the clamping block is withdrawn from the gap position, so that under the action of gravity, the traction block slides down along the slide track, so that the maximum gap between the annular forging and the mandrel is still located directly below the mandrel; In addition, when the core shaft drives the annular forging to rotate, the driven ratchet wheel is meshed with the driven ratchet teeth to make the abutment plate swing back and forth, so that the support block lifts up the blanking plate and then puts it down, so that the blanking plate actively hits the support block after being lifted up, causing the metal oxide scale to slide down along the blanking plate into the collection box, ensuring the cleanliness of the free forging processing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the indexing mechanism and the workbench of the present invention; Figure 3 It is a partial cross-sectional structural schematic diagram of the limit assembly and the transfer assembly of the present invention; Figure 4 The present invention Figure 2A schematic diagram of a partial front cross-sectional structure of; Figure 5 The present invention Figure 4 Enlarged view of point A in the middle; Figure 6 The present invention Figure 4 A schematic diagram of a partial front cross-sectional structure of; Figure 7 The present invention Figure 2 A schematic diagram of the partial structure of the side surface; Figure 8 It is a partial cross-sectional structural schematic diagram of the clamping assembly of the present invention when the traction rod is located at the traction position; Fig. 9 It is a partial cross-sectional structural schematic diagram of the clamping assembly of the present invention when it is in the clamping position; Fig.10 Schematic diagram of the cooperation between the mandrel and the annular forging of the present invention, wherein FIG a is a schematic diagram of the structure when the mandrel and the annular forging are located at the initial assembly position, and FIG b is a schematic diagram of the structure when the mandrel and the annular forging are located at the transfer assembly position; Fig.11 It is a partial structural schematic diagram of the guide rail seat and the second bracket of the present invention; Fig.12 It is a partial cross-sectional structural schematic diagram of the clamping assembly of the present invention when the traction rod is about to be separated from the traction block; Fig.13 It is a partial cross-sectional structural schematic diagram of the clamping assembly after the traction rod of the present invention is separated from the traction block; Fig.14 It is a schematic structural diagram of the pressing block and the push rod of the present invention when they are in the initial positions.

[0017] In the figure: 1, spindle; 11, first bracket; 12, transmission shaft; 13, baffle; 14, plug-in shaft; 141, plug-in protrusion; 15, second bracket; 16, main shaft; 2, transfer mechanism; 22, transfer assembly; 221, swing arm driving member; 222, swing arm; 2221, collar; 223, support block; 224, active ratchet; 225, active ratchet; 226, driven ratchet; 227, driven ratchet; 23, clamping assembly; 231, traction rod; 2311, jack; 232, guide rail seat; 2321, slide groove; 2322, wedge block; 233, traction block; 2331, vent pipe; 2332, telescopic tube; 2333, air pump; 2334, slider; 234, clamping block; 235, traction claw; 236, pressure block; 2361, second spring; 237, abutment rod; 238, slide seat; 239, first spring; 24, blanking assembly; 241, abutment plate; 2411, clearance groove; 242, transition shaft; 243, support rod; 244, support block; 3, workbench; 31, blanking port; 4, blanking plate; 5, collection box; 6, hammer head; 61, hammer drive member; 7, ring forging. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] In one embodiment, if Figure 1 , Figure 2 and Fig. 9 As shown, the present invention provides a ball bearing ring forging device, comprising: A mandrel 1, wherein the mandrel 1 is mounted above the workbench 3 and is used to sleeve the annular forging 7 to be forged; A hammer mechanism, the hammer mechanism comprising a hammer head 6 and a hammer driving member 61, the hammer head 6 is located on a side of the mandrel 1 away from the workbench 3, and driven by the hammer driving member 61, the hammer head 6 repeatedly hammers the outer ring wall of the annular forging 7; The indexing mechanism 2 includes an indexing assembly 22 and a clamping assembly 23. The indexing assembly 22 is connected to the mandrel 1 in a transmission manner. The indexing assembly 22 is used to drive the mandrel 1 to periodically rotate in one direction around the axis of the mandrel 1. The clamping assembly 23 is connected to the indexing assembly 22 in a transmission manner. The clamping assembly 23 includes a clamping block 234. When the transfer assembly 22 drives the core shaft 1 to rotate unidirectionally, the clamping block 234 in the clamping assembly 23 is clamped in the gap between the core shaft 1 and the annular forging 7 and rotates unidirectionally synchronously with the core shaft 1; when the transfer assembly 22 drives the core shaft 1 to rotate unidirectionally to the maximum angular displacement, the clamping block 234 rotates in the opposite direction to the initial position and is spaced apart from the annular forging 7.

[0020] like Fig.10 As shown in Figure a in the figure, the structure of the mandrel 1 and the annular forging 7 when they are in the initial assembly position is simply illustrated. Under the action of gravity, the axis of the annular forging 7 is located below the axis of the mandrel 1. At this time, the maximum gap between the mandrel 1 and the annular forging 7 is located below the mandrel 1, so that the clamping end of the clamping block 234 extends into and clamps at the gap, as shown in Figure a. Fig. 9 As shown, the relative positions of the mandrel 1 and the annular forging 7 are fixed, and then when the indexing assembly 22 drives the mandrel 1 to rotate clockwise, the transmission of the indexing assembly 22 and the clamping assembly 23 causes the clamping block 234 to rotate clockwise synchronously, as shown in FIG. Fig.10 As shown in Figure b, the structure of the mandrel 1 and the annular forging 7 when they are in the indexing assembly position is simply illustrated, so as to ensure that the mandrel 1 and the annular forging 7 always maintain a fixed relative position during the rotation process, and realize the uniform and stable indexing of the annular forging 7. When the indexing assembly 22 drives the mandrel 1 to rotate unidirectionally to the maximum angular displacement, the clamping block 234 rotates in the opposite direction to the initial position to release the fixed limit between the annular forging 7 and the mandrel 1, and under the action of gravity, the position relationship between the annular forging 7 and the mandrel 1 is restored to Fig.10 The position shown in Figure a in the figure is obtained, so that the hammer head 6 is continued to move down to hammer the rotated ring forging 7. During the whole process, there is no need to manually adjust the rotation position of the ring forging 7 with the help of pliers, that is, there is no need for workers to get close to the high-temperature forging. The operation is safe, the degree of mechanization is high, and the rotation accuracy is high, which fully guarantees the hammering uniformity of the overall wall thickness of the forging.

[0021] It should be noted that the hammer driving member 61 is a hydraulic telescopic member, an electric telescopic member, etc., which is not limited here. Under the drive of the hammer driving member 61, the hammer head 6 moves along the Figure 1 The forging machine 7 reciprocates up and down in the vertical direction shown to repeatedly hammer the outer ring wall of the forging 7, thereby reducing the wall thickness of the forging 7.

[0022] For example, see Figure 2 and Figure 3The core shaft 1 is fixedly sleeved on the transmission shaft 12, one end of the transmission shaft 12 is rotatably connected to the first bracket 11, the first bracket 11 is fixedly set on the workbench 3, the other end of the transmission shaft 12 is fixedly provided with a plug-in shaft 14, the plug-in shaft 14 is plugged into the main shaft 16 through a plug-in protrusion 141, the main shaft 16 is rotatably connected to the second bracket 15, the second bracket 15 is fixedly set on the workbench 3, wherein the axis center line of the transmission shaft 12 is colinear with the axis center line of the main shaft 16, and a baffle 13 is set on the edge of one end of the core shaft 1 away from the main shaft 16.

[0023] It should be noted that the rotation support of the transmission shaft 12 by the first bracket 11 is of a flip-cover type. The upper flip cover can be opened so that the transmission shaft 12 can be moved upward and taken out of the first bracket 11. When the annular forging 7 is installed, the annular forging 7 is transported and mounted on the core shaft 1 by a mechanical arm, and further transported to the upper position of the workbench 3, so that one end of the transmission shaft 12 is mounted on the first bracket 11, and the core shaft 1 is pushed along the axial direction of the transmission shaft 12, so that the plug-in shaft 14 on the transmission shaft 12 is plugged into the main shaft 16, and then the upper flip cover of the first bracket 11 is closed, and the transmission shaft 12 is rotationally constrained in the first bracket 11, thereby completing the installation of the annular forging 7, wherein the baffle 13 is used to limit the annular forging 7 on the core shaft 1 along the axial direction of the core shaft 1.

[0024] For example, see Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The indexing assembly 22 includes a swing arm driving member 221, a swing arm 222, an active ratchet 224, an active ratchet 225, a driven ratchet 227 and a driven ratchet 226. The output end of the swing arm driving member 221 is rotatably connected to the outer end of the swing arm 222. The inner end of the swing arm 222 is fixedly connected to a collar 2221. The collar 2221 is sleeved on the main shaft 16. The rotation axis of the collar 2221 is colinear with the axis of the main shaft 16. The swing arm 222 is rotatably connected to the main shaft 16 through a support block 223. The active ratchet 224 is meshed with the active ratchet 225 for transmission. The active ratchet 225 is fixedly arranged on the main shaft 16 and is located on the side of the second bracket 15 facing the core shaft 1. The main shaft 16 is located on the side of the second bracket 15 away from the core shaft 1 and is fixedly provided with a driven ratchet 226. The driven ratchet 227 is rotatably connected to the second bracket 15, and the driven ratchet 227 is meshed and abutted with the driven ratchet 226, wherein the rotating shafts of the active ratchet 224 and the driven ratchet 227 are respectively sleeved with torsion springs.

[0025] For example, Figure 3As shown, the collar 2221 is rotatably connected to the main shaft 16, and the collar 2221 is located on the side of the active ratchet 224 adjacent to the core shaft 1, so that when the collar 2221 rotates with the swing arm 222, it will not interfere with the transmission of the main shaft 16. It should be noted that the swing arm driving member 221 can be a hydraulic telescopic member, an electric telescopic member, an electrical telescopic member, etc., which is not limited here.

[0026] In the above embodiment, by starting the swing arm driving member 221, the swing arm 222 is rotated clockwise (in Figure 6 The driving ratchet 224 is engaged with the driving ratchet 225 for transmission, and the driving ratchet 225 drives the transmission shaft 12 to rotate clockwise through the main shaft 16, so that the mandrel 1 drives the annular forging 7 to rotate clockwise synchronously, and after the swing arm 222 swings clockwise to the set maximum displacement, it swings counterclockwise to the initial position. In this process, due to the abutment and limitation of the driven ratchet 227 on the driven ratchet 226, the main shaft 16 cannot rotate counterclockwise, so that the position of the mandrel 1 is fixed, and the driving ratchet 224 is reset to the initial position with the swing arm 222 under the action of the torsion spring, so that the mandrel 1 completes one rotation of the annular forging 7. By repeating the above actions, the mandrel 1 can drive the annular forging 7 to rotate periodically in one direction, so as to evenly accept the hammer forging processing of the hammer head 6.

[0027] For example, see Figure 6 , Figure 7 , Figure 8 and Fig. 9 The clamping assembly 23 also includes a traction rod 231, a traction connection assembly, a guide rail seat 232, a traction block 233 and a clamping drive assembly. The second bracket 15 is fixedly provided with a guide rail seat 232 on one side facing the core shaft 1. Fig.11 As shown, a slide groove 2321 is provided on the guide rail seat 232, a slider 2334 is fixedly connected to the traction block 233, and the slider 2334 is slidably connected to the guide rail seat 232 through the slide groove 2321. The side end of the swing arm 222 is fixedly connected to the traction rod 231, and the traction connection assembly is arranged in the traction block 233. The traction rod 231 is transmission-connected to the traction block 233 through the traction connection assembly. The traction block 233 is slidably connected to a clamping block 234 on one side facing the core shaft 1, and the output end of the clamping drive assembly is transmission-connected to the clamping block 234. The clamping drive assembly is used to drive the clamping block 234 to switch between the clamping position and the initial position. The traction rod 231 is an arc-shaped rod, and the center of the arc-shaped rod and the center of the trajectory of the slide groove 2321 coincide with the axis of the core shaft 1 respectively.

[0028] For details, please refer to Figure 4 and Figure 8The clamping block 234 is sleeved on the outside of the traction block 233, and an air cavity is formed between the traction block 233 and the clamping block 234. The clamping drive assembly includes an air pump 2333 and a telescopic tube 2332. The output end of the air pump 2333 is connected to the telescopic tube 2332, and the other end of the telescopic tube 2332 is connected to the air cavity area through a ventilation pipe 2331 opened inside the traction block 233.

[0029] In the above embodiment, by starting the air pump 2333, the blowing end of the air pump 2333 is connected to the telescopic tube 2332, and the air is pumped into the air cavity between the clamping block 234 and the traction block 233 located in the initial position, so that the clamping block 234 extends into the maximum gap between the core shaft 1 and the annular forging 7 and abuts against the annular forging 7, so that the relative position of the core shaft 1 and the annular forging 7 is fixed; after the rotation of the core shaft 1 is completed, the air pump 2333 is connected to the telescopic tube 2332 through the exhaust end, and the air cavity is exhausted, so that the clamping block 234 moves in the direction close to the traction block 233, that is, the clamping block 234 releases the abutment constraint on the annular forging 7, and under the gravity extrusion of the annular forging 7, the clamping block 234 is further prompted to withdraw from the gap to the initial position, so that the annular forging 7 is restored to its original position under the action of gravity. Fig.10 The position indicated in Figure a.

[0030] Continue reading Figure 8 , Fig. 9 , Fig.11 and Fig.14 The traction connection assembly includes a traction claw 235, a pressure block 236, a push rod 237, a slide 238 and a wedge block 2322. The end of the traction rod 231 away from the swing arm 222 is rotatably connected with the traction claw 235. The traction claw 235 and the rotation axis of the traction rod 231 are sleeved with a torsion spring. A cavity is opened in the traction block 233. The slide 238 is slidably connected to the traction block 233 through the cavity. The inner end of the slide 238 is fixedly connected to the traction block 233 through a first spring 239. The outer end of the slide 238 is fixedly connected with the push rod 237. The connecting end of 237 and the slide seat 238 has a step surface, and the second spring 2361 is symmetrically arranged on both sides of the slide seat 238, one end of the second spring 2361 is fixedly connected to the traction block 233, and the other end of the second spring 2361 is fixedly connected to the pressure block 236, and the arc convex surface of the pressure block 236 is frictionally matched with the side of the traction claw 235. The guide rail seat 232 is provided with a wedge block 2322 at one end adjacent to the swing arm 222, and the wedge block 2322 is located in the slide groove 2321, and the outer end of the push rod 237 is frictionally matched with the wedge surface of the wedge block 2322.

[0031] In the above embodiment, after the clamping block 234 extends into the gap and clamps the annular forging 7, Figure 8As shown, the traction claw 235 on the traction rod 231 extends into the cavity through the insertion hole 2311, and under the pressure of the pressure block 236, the traction claw 235 rotates laterally, and the cutting and pressing block 236 is pressed and abutted against the slide seat 238, so that under the control of the traction claw 235, that is, the traction rod 231 is located in the traction position, when the traction rod 231 rotates clockwise with the swing arm 222, the traction block 233 rotates synchronously, so that the slider 2334 slides along the slide groove 2321, so that the traction block 233 drives the clamping block 234 to rotate clockwise, so as to finally realize the unidirectional rotation of the annular forging 7 with the core shaft 1; Fig.12 As shown in FIG. 2 , when the abutting end of the abutting rod 237 rubs against the wedge surface of the wedge block 2322, the slide seat 238 squeezes the first spring 239 until the slide seat 238 is separated from the squeezing of the pressing block 236. At this time, under the torsion action of the torsion spring of the traction claw 235, the traction claw 235 squeezes the pressing block 236 and further squeezes the second spring 2361, so that the traction claw 235 releases the traction connection with the traction block 233, as shown in FIG. Fig.13 As shown, the pressing block 236 moves upward to a position above the sliding seat 238 under the elastic force of the second spring 2361, and the sliding seat 238 pushes the support rod 237 to move outward to the initial position under the elastic force of the first spring 239, and releases the clamping constraint of the clamping block 234 on the annular forging 7, so that under the action of gravity, the traction block 233 slides down along the trajectory of the sliding groove 2321, causing the traction claw 235 to disengage from the socket 2311, completing a uniform rotation of the annular forging 7.

[0032] For example, see Figure 2 and Figure 4 The workbench 3 is provided with a blanking opening 31, which is located below the core shaft 1. The workbench 3 is rotatably connected with a blanking plate 4, which is located in the blanking opening 31. The position of the rotatable connection end of the blanking plate 4 and the workbench 3 is higher than the table top of the workbench 3. The blanking end of the blanking plate 4 is located below the workbench 3. A collecting box 5 is also provided below the workbench 3, and the collecting opening of the collecting box 5 is located below the blanking end of the blanking plate 4. The bearing ring forging device also includes a blanking component 24, which includes a blanking drive and a support block 244. The blanking drive is transmission-connected to the support block 244. When driven by the blanking drive, the support block 244 is used to lift and drop the blanking end of the blanking plate 4, so that the metal oxide scale falling from the surface of the annular forging 7 during the hammering and forging process of the hammer head 6, passes through the blanking port 31 and falls on the blanking plate 4, so that the inclined setting of the blanking plate 4 causes the metal oxide scale to slide into the collecting box 5, and, driven by the blanking drive, the support block 244 lifts and drops the blanking end of the blanking plate 4, so that the blanking plate 4 swings down under the action of gravity and actively hits the support block 244, thereby causing the metal oxide scale on the blanking plate 4 to vibrate and slide into the collecting box 5, thereby improving the blanking effect.

[0033] For example, see Figure 4 and Figure 5 The blanking driving component includes an abutment plate 241, a transition shaft 242 and a support rod 243. The side surface of the abutment plate 241 is in frictional contact with the tooth surface of the driven ratchet 227. The end of the abutment plate 241 away from the driven ratchet 227 passes through the clearance groove 2411 to the lower position of the workbench 3 and is fixedly connected with the transition shaft 242. The side end of the transition shaft 242 is fixedly connected with the support rod 243. The end of the support rod 243 close to the blanking plate 4 is fixedly connected with the support block 244, wherein the transition shaft 242 is rotatably set on the base of the workbench 3, and a torsion spring is provided between the transition shaft 242 and the base at the rotating position.

[0034] In the above embodiment, when the main shaft 16 rotates, the driven ratchet 226 rotates synchronously, and the driven ratchet 227 rotates counterclockwise (in degrees) under the resistance of the ratchet teeth of the driven ratchet 226. Figure 5 The support block 244 is rotated to release the support block 244 from the contact with the blanking plate 4, so that the blanking plate 4 moves downward under the action of the torsion spring on the transition shaft 242, and actively hits the support block 244. When the driven ratchet 227 passes over the ratchet teeth of a driven ratchet wheel 226, the driven ratchet 227 rotates clockwise to reset, and under the action of the torsion spring on the transition shaft 242, the support block 244 moves downward quickly to break away from the contact with the blanking plate 4, so that the blanking plate 4 moves downward under the action of gravity and actively hits the support block 244. When the driven ratchet 227 passes over the ratchet teeth of multiple driven ratchet wheels 226, the blanking plate 4 hits the support block 244 multiple times, causing the metal oxide scale on the blanking plate 4 to vibrate and slide off.

[0035] It should be noted that in order to increase the number of impacts of the blanking plate 4 in one cycle, the number of ratchet teeth of the driven ratchet 226 can be made a multiple of the number of ratchet teeth of the active ratchet 225, for example, the multiple is 2 times, 3 times, 4 times, etc., which is not limited here.

[0036] In one embodiment, the present invention further provides a forging method using the above-mentioned ball bearing ring forging device, comprising the following steps: S1, sleeve the annular forging 7 on the mandrel 1, start the air pump 2333, and move the clamping block 234 in a direction away from the guide rail seat 232 until the clamping end of the clamping block 234 extends into the maximum gap between the annular forging 7 and the mandrel 1 and is clamped with the annular forging 7; S2, start the swing arm driving member 221, so that the swing arm 222 drives the traction rod 231 to swing to the initial position, and the traction end of the traction rod 231 is transmission-connected with the traction block 233 through the traction connection assembly; S3, the swing arm driving member 221 drives the swing arm 222 to swing in the opposite direction, and the active ratchet 224 engages the active ratchet wheel 225 to rotate, so that the transmission shaft 12 drives the core shaft 1 to rotate in one direction. At the same time, the traction rod 231 pulls the traction block 233, so that the traction block 233 drives the clamping block 234 to rotate in one direction synchronously; S4, when the swing arm 222 swings in the reverse direction to the maximum angular displacement, the traction rod 231 is separated from the traction block 233, and the air pump 2333 is turned off, and the traction block 233 slides down under the action of gravity until the clamping block 234 is reset to the maximum gap between the annular forging 7 and the core shaft 1; S5, starting the hammer driving member 61 to make the hammer head 6 hammer the outer ring wall of the annular forging 7.

[0037] By means of the above method, the outer ring wall of the annular forging 7 can be evenly displaced and hammered to ensure the processing quality of the free forging.

[0038] It should be noted that, when the ball bearing ring forging device is used, the annular forging 7 is sleeved on the core shaft 1, the air pump 2333 is started, the blowing end of the air pump 2333 is connected with the telescopic tube 2332, and the air cavity between the clamping block 234 and the traction block 233 located at the initial position is pumped, so that the clamping block 234 extends to the maximum gap between the core shaft 1 and the annular forging 7 and abuts against the annular forging 7, so that the relative position of the core shaft 1 and the annular forging 7 is fixed, and the swing arm driving member 221 is started, so that the traction rod 231 drives the traction claw 235 to enter the insertion hole 2311, and the traction claw 235 is squeezed by the pressure block 236 to lock the traction claw 235 on the traction block 233; Under the reverse drive of the swing arm driving member 221, the swing arm 222 pulls the traction block 233 to slide clockwise through the traction rod 231, so that the core shaft 1 drives the annular forging 7 to stably rotate clockwise. When the core shaft 1 rotates clockwise to the maximum angular displacement, the abutment rod 237, under the resistance of the wedge block 2322, causes the slide seat 238 to compress the first spring 239, and the pressure block 236 is squeezed downward by the traction claw 235, so that the traction claw 235 exits the insertion hole 2311, and the traction constraint of the traction rod 231 on the traction block 233 is released, and the suction end of the air pump 2333 is connected to the telescopic tube 2332 to evacuate the air cavity, so that the clamping block 234 moves in the direction close to the traction block 233, that is, the clamping block 234 releases the abutment constraint on the annular forging 7, and under the gravity extrusion of the annular forging 7, the clamping block 234 is further prompted to exit the gap to the initial position, so that the annular forging 7 is restored to its original position under the action of gravity. Fig.10 The position indicated in Figure a is repeated to evenly and orderly rotate the ring forging 7, and after the rotation is completed within the cycle, the ring forging 7 is subjected to hammer forging processing by the hammer head 6, thereby ensuring the processing quality of the core shaft hole expansion of the ring forging 7, without manual rotation, and safe operation; In addition, when the main shaft 16 drives the core shaft 1 to rotate clockwise through the transmission shaft 12, the abutment plate 241 swings back and forth with the help of the meshing and abutment between the driven ratchet 227 and the driven ratchet wheel 226, so that the support block 244 can lift and then put down the blanking plate 4, causing the metal oxide scale on the blanking plate 4 to slide down into the collection box 5, reducing the cleaning intensity of the workers and keeping the free forging processing environment clean.

[0039] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A ball bearing ring forging device, characterized in that: include: A mandrel (1), the mandrel (1) being mounted above the workbench (3), the mandrel (1) being used to sleeve the annular forging (7) to be forged; A hammer mechanism, the hammer mechanism comprising a hammer head (6) and a hammer driving member (61), the hammer head (6) being located on a side of the mandrel (1) away from the workbench (3), and driven by the hammer driving member (61), the hammer head (6) repeatedly hammers the outer ring wall of the annular forging (7); A transfer mechanism (2), the transfer mechanism (2) comprising a transfer assembly (22) and a clamping assembly (23), the transfer assembly (22) being in driving connection with the core shaft (1), the transfer assembly (22) being used to drive the core shaft (1) to unidirectionally periodically rotate around the axis of the core shaft (1), the clamping assembly (23) being in driving connection with the transfer assembly (22), and the clamping assembly (23) comprising a clamping block (234); When the transfer assembly (22) drives the mandrel (1) to rotate unidirectionally, the clamping block (234) in the clamping assembly (23) is clamped in the gap between the mandrel (1) and the annular forging (7) and rotates unidirectionally synchronously with the mandrel (1); when the transfer assembly (22) drives the mandrel (1) to rotate unidirectionally to the maximum angular displacement, the clamping block (234) rotates in the opposite direction to the initial position and is spaced apart from the annular forging (7).

2. A ball bearing ring forging device according to claim 1, characterized in that: The core shaft (1) is fixedly sleeved on the transmission shaft (12); one end of the transmission shaft (12) is rotatably connected to the first bracket (11); the first bracket (11) is fixedly arranged on the workbench (3); the other end of the transmission shaft (12) is fixedly provided with a plug-in shaft (14); the plug-in shaft (14) is plugged into the main shaft (16) through a plug-in protrusion (141); the main shaft (16) is rotatably connected to the second bracket (15); the second bracket (15) is fixedly arranged on the workbench (3); the axis centerline of the transmission shaft (12) is colinear with the axis centerline of the main shaft (16); and a baffle (13) is arranged on the edge of one end of the core shaft (1) away from the main shaft (16).

3. A ball bearing ring forging device according to claim 2, characterized in that: The indexing assembly (22) comprises a swing arm driving member (221), a swing arm (222), a driving ratchet (224), a driving ratchet wheel (225), a driven ratchet (227) and a driven ratchet wheel (226); the output end of the swing arm driving member (221) is rotatably connected to the outer end of the swing arm (222); the inner end of the swing arm (222) is fixedly connected to a collar (2221); the collar (2221) is sleeved on the main shaft (16); the rotation axis of the collar (2221) is colinear with the axis of the main shaft (16); the swing arm (222) is rotatably connected to the main shaft (16) via a support block (223); The active ratchet (224) is meshed with the active ratchet (225) for transmission, the active ratchet (225) is fixedly arranged on the main shaft (16) and is located on the side of the second bracket (15) facing the core shaft (1), the main shaft (16) is located on the side of the second bracket (15) away from the core shaft (1) and is fixedly provided with a driven ratchet (226), the driven ratchet (227) is rotatably connected to the second bracket (15), and the driven ratchet (227) is meshed and abutted with the driven ratchet (226), wherein the rotation axes of the active ratchet (224) and the driven ratchet (227) are respectively sleeved with torsion springs.

4. A ball bearing ring forging device according to claim 3, characterized in that: The collar (2221) is rotatably connected to the main shaft (16), and the collar (2221) is located on a side of the active ratchet (224) adjacent to the core shaft (1).

5. A ball bearing ring forging device according to claim 4, characterized in that: The clamping assembly (23) further comprises a traction rod (231), a traction connection assembly, a guide rail seat (232), a traction block (233) and a clamping drive assembly; the second bracket (15) is fixedly provided with a guide rail seat (232) on the side facing the spindle (1); a slide groove (2321) is provided on the guide rail seat (232); a slider (2334) is fixedly connected to the traction block (233); the slider (2334) is slidably connected to the guide rail seat (232) via the slide groove (2321); The side end of the swing arm (222) is fixedly connected to a traction rod (231), the traction connection assembly is arranged in the traction block (233), the traction rod (231) is drivingly connected to the traction block (233) via the traction connection assembly, the traction block (233) is slidably connected to a clamping block (234) on one side facing the core shaft (1), the output end of the clamping drive assembly is drivingly connected to the clamping block (234), and the clamping drive assembly is used to drive the clamping block (234) to switch between a clamping position and an initial position; The traction rod (231) is an arc-shaped rod, and the center of the arc-shaped rod and the center of the trajectory of the slide groove (2321) respectively coincide with the axis of the core shaft (1).

6. A ball bearing ring forging device according to claim 5, characterized in that: The traction connection assembly comprises a traction claw (235), a pressure block (236), a push rod (237), a slide seat (238) and a wedge block (2322); one end of the traction rod (231) away from the swing arm (222) is rotatably connected to the traction claw (235); a torsion spring is sleeved on the rotation axis of the traction claw (235) and the traction rod (231); a cavity is provided in the traction block (233); the slide seat (238) is slidably connected to the traction block (233) through the cavity; the inner end of the slide seat (238) is fixedly connected to the traction block (233) via a first spring (239); the outer end of the slide seat (238) is fixedly connected to the push rod (237); the push rod (237) is sleeved on the rotation axis of the traction claw (235) and the traction rod (231); The connecting end of the rod (237) and the slide seat (238) has a step surface, and the slide seat (238) is symmetrically provided with a second spring (2361) on both sides, one end of the second spring (2361) is fixedly connected to the traction block (233), and the other end of the second spring (2361) is fixedly connected to the pressure block (236), and the arc convex surface of the pressure block (236) is frictionally matched with the side surface of the traction claw (235), and the guide rail seat (232) is provided with a wedge block (2322) at one end adjacent to the swing arm (222), and the wedge block (2322) is located in the slide groove (2321), and the outer end of the push rod (237) is frictionally matched with the wedge surface of the wedge block (2322).

7. A ball bearing ring forging device according to claim 6, characterized in that: The clamping block (234) is sleeved on the outside of the traction block (233), and an air cavity is formed between the traction block (233) and the clamping block (234); the clamping drive assembly comprises an air pump (2333) and a telescopic tube (2332); the output end of the air pump (2333) is in communication with the telescopic tube (2332), and the other end of the telescopic tube (2332) is in communication with the air cavity area via a vent pipe (2331) provided inside the traction block (233).

8. A ball bearing ring forging device according to claim 7, characterized in that: The workbench (3) is provided with a blanking opening (31), the blanking opening (31) is located below the core shaft (1), the workbench (3) is rotatably connected with a blanking plate (4), the blanking plate (4) is located in the blanking opening (31), and the position of the rotatably connected end of the blanking plate (4) and the workbench (3) is higher than the table top of the workbench (3), the blanking end of the blanking plate (4) is located below the workbench (3), and a collecting box (5) is also provided below the workbench (3), the collecting opening of the collecting box (5) is located below the blanking end of the blanking plate (4); The bearing ring forging device further comprises a blanking assembly (24), the blanking assembly (24) comprising a blanking drive member and a support block (244), the blanking drive member being in driving connection with the support block (244), and when driven by the blanking drive member, the support block (244) is used to lift and drop the blanking end of the blanking plate (4).

9. A ball bearing ring forging device according to claim 8, characterized in that: The blanking drive member comprises an abutment plate (241), a transition shaft (242) and a support rod (243); the side surface of the abutment plate (241) is in frictional contact with the tooth surface of the driven ratchet (227); one end of the abutment plate (241) away from the driven ratchet (227) passes through a clearance groove (2411) to a position below the workbench (3) and is fixedly connected to the transition shaft (242); the side end of the transition shaft (242) is fixedly connected to the support rod (243); one end of the support rod (243) close to the blanking plate (4) is fixedly connected to the support block (244); wherein the transition shaft (242) is rotatably arranged on a base of the workbench (3); a torsion spring is sleeved between the rotational position of the transition shaft (242) and the base.

10. A forging method using the ball bearing ring forging device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, sleeve the annular forging (7) on the core shaft (1), start the air pump (2333), and move the clamping block (234) in a direction away from the guide rail seat (232) until the clamping end of the clamping block (234) extends into the maximum gap between the annular forging (7) and the core shaft (1) and is clamped with the annular forging (7); S2, starting the swing arm driving member (221), so that the swing arm (222) drives the traction rod (231) to swing to the initial position, and the traction end of the traction rod (231) is transmission-connected to the traction block (233) via the traction connection assembly; S3, the swing arm driving member (221) drives the swing arm (222) to swing in the opposite direction, and the active ratchet (224) engages the active ratchet wheel (225) to rotate, so that the transmission shaft (12) drives the core shaft (1) to rotate in one direction, and at the same time, the traction rod (231) pulls the traction block (233), so that the traction block (233) drives the clamping block (234) to rotate in one direction synchronously; S4, when the swing arm (222) swings in the reverse direction to the maximum angular displacement, the traction rod (231) is separated from the traction block (233), and the air pump (2333) is turned off, and the traction block (233) slides down under the action of gravity until the clamping block (234) is reset to the maximum gap between the annular forging (7) and the core shaft (1); S5, starting the hammer driving member (61) to cause the hammer head (6) to hammer the outer ring wall of the annular forging (7).

Images