Automated production line for drive axle housing

Abstract

An automated production line for a drive axle housing, which relates to an automobile parts production line, includes an automatic controller, a stamping production line, a machining production line, a welding production line, a plasma processing device for the main reducer hole, and a handling robot. The stamping production line is a production line shared by cold and hot stamping, and includes a heating furnace, a first hydraulic press with a small tonnage, a film laminating machine, a second hydraulic press with a large tonnage, a cleaning device, a cooling device, and a half-shell shot blasting machine. The heating furnace is installed at the starting end of the stamping production line, and the first and second hydraulic presses are installed side by side behind the heating furnace. Both the first and second hydraulic presses are provided with first and second workbenches; the film laminating machine is distributed between the two hydraulic presses; the cleaning device and the cooling device are respectively installed behind the two hydraulic presses. The present invention can improve the versatility and applicability of the production line, reduce equipment costs, reduce energy waste, quickly switch molds, effectively protect the axle housing and molds, reduce resource waste, and is conducive to large-scale production.

Description

Technical Field

[0001] The invention relates to an automobile parts production line, in particular to an automatic production line for a drive axle housing. Background Art

[0002] At present, in the production process of automobile drive axles, the sheet is first stamped into half axle housing, and then the two halves of the axle housing are welded together. Then, the center circular hole (i.e., the main reducer mounting hole) is processed by plasma at the corresponding position of the axle housing, and finally the oil hole and the vent hole are processed. (1) Due to the inconsistent thickness of the drive axle housing material (8mm~16mm), the stamping process is divided into thin plate cold stamping process and thick plate hot stamping process. At present, in the production process of axle housing, in order to reduce equipment investment, the hot stamping process is generally directly adopted. Regardless of the thickness of the sheet, all hot stamping is performed. Its versatility and applicability are poor, which leads to increased equipment costs and large energy waste. (2) There are many types of drive axle housings (more than 100 types) with different structures, which is not conducive to positioning. As a result, a large number of positioning fixtures are required in each process of the production process, which makes it impossible to produce multiple types of axle housings on a single automatic line, which invisibly increases the fixture cost and wastes factory space. (3) Since the bridge housing is not allowed to have process positioning holes, the bridge housing is usually transported to each process manually or by using a gantry hook; this working method is inefficient, highly dangerous, and not conducive to large-scale production. Even if a handling robot is used for transportation, due to the large variety of drive bridge housings and large differences in parts, multiple grippers are required to clamp workpieces of different models, and the grippers must be frequently replaced according to the workpiece model. Therefore, the current common production methods all rely on manual handling, manual positioning, manual disassembly and assembly of parts, and production with the assistance of a small amount of equipment. The work process is relatively rough, the labor intensity of workers is high, and the production efficiency is low, which is no longer suitable for modern intelligent production requirements. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automated production line for a drive axle housing to overcome the shortcomings of the prior art production line, such as poor versatility and applicability, high equipment cost, large energy waste, and disadvantages of large-scale production.

[0004] The technical solution for solving the above technical problems is as follows: An automated production line for a drive axle housing, which includes an automatic controller, a stamping production line, a machining production line, a welding production line, a plasma processing device for the main reducer hole, and a handling robot, all of which are connected to the automatic controller. The welding production line includes a welding robot. The handling robot includes a handling robot body. The stamping production line is a production line shared by cold stamping and hot stamping, and includes a heating furnace, a small-tonnage first hydraulic press, a film laminating machine, a large-tonnage second hydraulic press, a cleaning device, a cooling device, and a half-shell shot blasting machine. The heating furnace is installed at the starting end of the stamping production line. The first hydraulic press and the second hydraulic press are installed side by side behind the heating furnace. Both the first hydraulic press and the second hydraulic press are provided with a first workbench and a second workbench. The film laminating machine is distributed on one side between the two hydraulic presses. The cleaning device and the cooling device are respectively installed behind the two hydraulic presses. The half-shell shot blasting machine is installed behind the cleaning device and the cooling device.

[0005] A further technical solution of the present invention is: An annular pipeline is also installed in the cooling device, and this annular pipeline is connected to the cleaning device.

[0006] A further technical solution of the present invention is: The welding production line further includes an automatic welding positioning device, which includes a base device, a longitudinal positioning device, and an automatic centering device. There are two sets of the longitudinal positioning devices, which are respectively installed on the left and right sides of the base device. The automatic centering device is installed in the middle of the base device and is connected to the middle part of the workpiece for positioning. The longitudinal positioning device includes a screw rod transmission mechanism and an end axis centering mechanism. The screw rod transmission mechanism is installed on the base device, and the end axis centering mechanism is installed at the output end of the screw rod transmission mechanism and is respectively connected to the left and right ends of the workpiece for positioning.

[0007] A still further technical solution of the present invention is: The screw rod transmission mechanism includes a servo motor I, a screw rod I, a connecting rod I, a support seat for the end axis centering mechanism, and a guide rail I. The servo motor I is installed on the base device through a servo motor I mounting seat. The screw rod I is supported on the base device through a bearing seat I, and one end of the screw rod I is connected to the output shaft of the servo motor I. The connecting rod I is in a " " shape. One end of the connecting rod I is connected to the other end of the screw rod I by a thread, and the other end of the connecting rod I is connected to one side plane of the support seat for the end axis centering mechanism. The other side plane of the support seat for the end axis centering mechanism is connected to the guide rail I through a slider I. The guide rail I is installed on the base device. The end axis centering mechanism is fixedly installed on the support seat for the end axis centering mechanism.

[0008] A further technical solution of the present invention is as follows: The end axis alignment mechanism includes a stepped pin base, a gripper cylinder I base, a gripper cylinder I, a gripper I, a stepped pin, and a Y-shaped clamping block. The stepped pin base is an "L" block, which is fastened to the end axis alignment mechanism support seat on the same side as the slider I. A guiding flat counterbore is machined at the end for installing the stepped pin on this stepped pin base, and a threaded hole is machined in the middle of the bottom of the guiding flat counterbore. The gripper cylinder I base is installed on the stepped pin base. The gripper cylinder I is installed on the gripper cylinder I base, and the output ends of the gripper cylinder I are respectively connected to a pair of opposite grippers I, and the gripper I is an "L" block. The Y-shaped clamping block is installed on the inner end face of the gripper I, and the inner end face of the Y-shaped clamping block is matched with both ends of the workpiece. One end of the stepped pin is a stepped cylindrical pin, the other end of the stepped pin has a guiding flat position matched with the guiding flat counterbore of the stepped pin base, and a bolt hole is provided in the middle of the stepped pin. The stepped pin is connected to the threaded hole of the stepped pin base through a bolt located in the bolt hole.

[0009] A further technical solution of the present invention is as follows: The automatic alignment device includes a servo motor II, a driven sliding table, a servo motor II mounting seat, a hinge mechanism, a driving sliding table, a connecting block II, a guide rail III, a lead screw II, a slider III, a roller support, and a roller. The servo motor II is installed on the servo motor II mounting seat. The servo motor II mounting seat and the bearing seat II are both "L" blocks and are respectively installed on the base device. The lead screw II passes through the bearing seat II and is connected to the output shaft of the servo motor II. The connecting block II is an "L" block. One end of the connecting block II is connected to the lead screw II through a thread, and the other end of the connecting block II is fastened to the driving sliding table. The driving sliding table and the driven sliding table are respectively connected to the guide rail III through the slider III. The guide rail III is fastened to the base device. The front end of the hinge mechanism is connected to the driving sliding table, and the end of the hinge mechanism is connected to the driven sliding table. The middle hinge point of the hinge mechanism is fastened to the base device. The roller supports are respectively installed on the driving sliding table and the driven sliding table, and a waist-shaped hole for installing and adjusting the roller is machined on the roller support. The roller is fastened to the waist-shaped hole of the roller support through a fastener. A laser emitter for detecting whether there is a workpiece on the fixture is also installed on the roller support.

[0010] A further technical solution of the present invention is that the automatic welding positioning device for the automobile drive axle housing further includes an auxiliary clamping device, which includes an auxiliary cylinder mounting bracket, an auxiliary cylinder, a guide rail II, a sliding table, a gripper cylinder II bracket, a gripper cylinder II, and a gripper II; the auxiliary cylinder mounting bracket is fastened to the inner side surface of the base device; the guide rail II is mounted on the inner side surface of the base device; the bottom surface of the sliding table is connected to the guide rail II through a slider II, the upper surface of the sliding table is connected to the gripper cylinder II bracket, and the side end surface of the sliding table is connected to the output end of the auxiliary cylinder; the gripper cylinder II is mounted on the gripper cylinder II bracket, and the output end of the gripper cylinder II is connected to the gripper II; four limit blocks for restricting the stroke of the sliding table are further mounted on the inner side surface of the base device, and buffer blocks are respectively mounted on the four limit blocks.

[0011] A further technical solution of the present invention is that the plasma processing device for the main reducer hole includes a plasma cutting robot and a waste automatic disassembly device. The waste automatic disassembly device includes a horizontal lifting device, a lifting connection device, and a discharging device. The discharging device includes a cylinder base, two cylinders, a pull rod, and two discharging blocks; the cylinder base includes a base bracket, a cylinder bracket I, and a cylinder bracket II. The horizontal lifting device is fixed above the workbench. The upper end of the lifting connection device is fixedly connected to the lower end of the horizontal lifting device, and the lower end of the lifting connection device is fastened to the two side surfaces of the base bracket; the cylinder bracket I is respectively connected to the two ends of the base bracket, the cylinder bracket II is mounted in the middle of the base bracket, the two cylinders are fixedly arranged opposite to each other on the cylinder base, and the two cylinders are respectively connected to the two ends of the cylinder bracket II; a guide rail IV is mounted at the bottom of the base bracket, two sliders IV are slidably connected to the guide rail IV, and the bottoms of the two sliders IV are respectively fixedly connected to the tops of two discharging blocks arranged opposite to each other through slider mounting seats; the pull rod is a J-shaped rod, the extending ends of the two cylinders are respectively hinged to one end of the pull rod, and the other end of the pull rod is hinged to the slider mounting seat; the discharging block has a vertical section for pressing against the inner hole wall of the workpiece and a bending section integrally connected to the bottom of the vertical section and extending outward for carrying the workpiece waste. An inductor I is further mounted at the lower end of the vertical section of the discharging block.

[0012] A further technical solution of the present invention is that the handling robot further includes a driving axle housing gripper device, and the driving axle housing gripper device includes a clamping device. The clamping device includes a clamping cylinder, a gripper, a cross beam, a clamping cylinder base, and an anti-slip device. The output end of the clamping cylinder is connected to the gripper. The cross beam is connected to the handling robot body through a flange plate mounted thereon. The clamping cylinder base is fixedly connected to the cross beam. The clamping cylinder is fastened to the bottom of the clamping cylinder base, and the gripper is mounted on the output end of the clamping cylinder. The anti-slip device is mounted on the inner clamping surface of the gripper. The anti-slip device is an anti-slip pad processed with counterbore holes. The anti-slip pad is mounted on the inner clamping surface of the gripper through fasteners located in the counterbore holes, and the working end face of the anti-slip pad is flush with the end hook end face of the gripper. The length K of the end hook is 15 - 20 mm.

[0013] A further technical solution of the present invention is that the clamping device further includes a laser emitter bracket, a laser emitter for sensing whether there is a workpiece, and a sensor II for sensing whether the workpiece is clamped. The laser emitter bracket is an "L" block, and the laser emitter bracket is fastened to the bottom of the cross beam. The laser emitter is mounted on the laser emitter bracket. The sensor II is mounted on the inner clamping surface of the gripper.

[0014] Due to the above structure, compared with the prior art, the driving axle housing automatic production line of the present invention has the following beneficial effects:

[0015] 1. It can improve the versatility and applicability of the production line

[0016] Since the stamping production line of the present invention is a production line shared by cold stamping and hot stamping, it can flexibly select cold stamping or hot stamping according to the required thickness of the sheet material, effectively avoiding the limitation that cold stamping cannot be performed due to too thick material, or the energy waste caused by using hot stamping for both thick and thin materials, and can effectively improve the versatility and applicability of the production line.

[0017] 2. It can reduce equipment costs and energy waste

[0018] The stamping production line of the present invention includes a heating furnace, a first hydraulic press with a small tonnage, a second hydraulic press with a large tonnage, a film laminating machine, a cleaning device, a cooling device, and a half-shell shot blasting machine. First, in order to meet the line rhythm, the present invention selects presses with different tonnages at the same time to adapt to the stamping of various sheet materials (when the cold stamping sheet material is thinner, the first hydraulic press with a small tonnage can be selected, and when the sheet material is thicker, the second hydraulic press with a large tonnage can be selected; when the sheet material is too thick, hot stamping is used, first stamped and formed by the first hydraulic press with a small tonnage, and then shaped by the second hydraulic press with a large tonnage). Different press tonnages can effectively reduce equipment costs. At the same time, the stamping method and press tonnage can be flexibly selected according to the sheet material thickness, effectively reducing energy consumption.

[0019] 3. Quick mold change

[0020] Since both the first hydraulic press and the second hydraulic press of the present invention are provided with two workbenches, the double-workbench configuration enables mold change to be completed outside the hydraulic press. The mold installation time can be adjusted to the production time of the previous part. When switching products, only need to drive the workbench with the mold for the next production product into the hydraulic press and lock the mold. That is, when the previous part is being produced, the first workbench of the relevant hydraulic press is in use and located within the working area, while the second workbench is outside the working area. At this time, lift the mold for the next part to be produced onto the second workbench of the corresponding hydraulic press in use. When the previous part is produced, the first workbench drives away from the working area along the track; at the same time, the second workbench (already installed with the mold for the next part to be produced) enters the interior of the hydraulic press to start stamping the next part; at this time, the mold on the first workbench outside the working area can be disassembled, and then the mold for the next part to be produced can be replaced. By changing molds in this way repeatedly, the function of quick mold change is realized, which can greatly reduce the waiting time of the automatic line during mold change and solve the bottleneck problem of long mold change time in the traditional stamping production line.

[0021] 4. Can effectively protect the axle housing and the mold

[0022] The stamping production line of the present invention includes a film laminating machine. Before cold stamping, a film and an oil mold are covered on the outer surface, which can protect the axle housing and the mold, prevent scratches from being pressed on the surface of the workpiece, and effectively extend the service life of the mold.

[0023] 5. Can reduce resource waste

[0024] The present invention also installs an annular pipeline in the cooling device. This annular pipeline is connected to the cleaning device. When the cleaning device is not working, it can heat or keep the cleaning liquid warm by absorbing the heat of the cooling device, and at the same time can effectively cool down the cooling device. Therefore, the present invention can make full use of resources, reduce resource waste and reduce the heating time before the cleaning station works.

[0025] 6. Effectively solve the problem of no process hole positioning for the axle housing

[0026] The automatic welding positioning device on the welding production line of the present invention includes an automatic centering device. This automatic centering device presses the middle arc of the axle housing through double rollers, and after the arc of the axle housing is balanced in force, it automatically centers, effectively solving the problem of no process hole positioning for the axle housing.

[0027] 7. Facilitate large-scale production

[0028] The automatic welding positioning device on the welding production line of the present invention includes a base device, a longitudinal positioning device, and an automatic centering device. The automatic centering device aligns the axle housing by squeezing the surface of the middle arc convex hull of the axle housing, which can ensure that the center of the middle arc of various axle housings is always located at the same position, solving the problem that a general positioning method cannot be used due to the diversity of axle housings. Therefore, a set of jigs of the present invention can meet the centering and positioning of all axle housings, effectively improving the versatility of the production line and reducing the investment in jigs.

[0029] In addition, the longitudinal positioning device includes a lead screw drive mechanism and an end axis centering mechanism. The lead screw drive mechanism is installed on the base device, and the end axis centering mechanism is installed at the output end of the lead screw drive mechanism, and the end axis centering mechanism is respectively connected to the left and right ends of the workpiece for positioning. Through the step pins of the automatic centering device and the end axis centering mechanism of the present invention, the axle housing can be positioned in suspension, which is convenient for welding. Moreover, different diameters of steps are processed at the end of the step pin positioning shaft, and each step corresponds to positioning different shaft diameters. When the step pin does not meet the shaft diameter positioning, other specifications of step pins can be quickly switched, which is sufficient to meet the positioning of various axle housings with different shaft diameters. The step pin can be driven to move arbitrarily by a servo motor, which can meet the positioning of axle housings with different shaft end lengths.

[0030] Furthermore, the driving axle housing gripper device of the handling robot of the present invention includes a clamping device. The clamping device includes a clamping cylinder, a gripper, a cross beam, a clamping cylinder base, and an anti-slip device. The gripper clamps the axle housing through friction, rather than the traditional gripper with a barb. The purpose of omitting the barb is to increase the opening space of the gripper to meet the clamping of various sizes of axle housings. A single set of grippers can meet the lifting of all models of axle housings.

[0031] Therefore, the jigs of the present invention have high versatility and are quick and convenient to switch, which is very beneficial to large-scale production.

[0032] 8. High degree of automation

[0033] The entire production line of the present invention uses a handling robot with a gripper to handle, with a high degree of automation, reducing the investment in labor costs, lowering the labor intensity of workers, improving production efficiency and production safety, and increasing enterprise benefits.

[0034] 9. High production efficiency and low labor cost

[0035] The production line of the present invention is an automated production line, which only requires 3 workers to assist in production. Compared with the traditional production method, it can not only effectively improve production efficiency, but also greatly reduce labor costs.

[0036] Next, in combination with the drawings and embodiments, the technical features of the driving axle housing automated production line of the present invention will be further described. Description of the drawings

[0037] Figure 1 : Layout plan of the automated production line for the drive axle housing of the present invention,

[0038] Figure 2 : Front view of the automatic welding positioning device described in Example 1,

[0039] Figure 3 : Figure 2 Rear view of

[0040] Figure 4 : Perspective view of the automatic welding positioning device described in Example 1;

[0041] Figure 5 : Structural schematic diagram of the longitudinal positioning device described in Example 1,

[0042] Figure 6 : Structural schematic diagram of the end axis centering mechanism described in Example 1,

[0043] Figure 7 : Structural schematic diagram of the step pin base described in Example 1,

[0044] Figure 8 : Front view of the step pin described in Example 1,

[0045] Figure 9 : Figure 8 Left view of

[0046] Figure 10 : Figure 8 Top view cross-sectional view of

[0047] Figure 11 : Front view of the assembly of the base device and the automatic centering device described in Example 1,

[0048] Figure 12 : Figure 11 Rear view of

[0049] Figure 13 : Figure 11 Left view of

[0050] Figure 14 : Figure 12 A-A cross-sectional view of

[0051] Figure 15 : Perspective view of the assembly of the base device and the automatic centering device described in Example 1;

[0052] Figure 16 : Perspective view of the auxiliary clamping device described in Example 1;

[0053] Figure 17 : Structural schematic diagram of the automatic waste removal device described in Example 1,

[0054] Figure 18 : Schematic structural diagram of the unloading device described in the first embodiment

[0055] Figure 19 : Assembly schematic diagram of the waste automatic disassembly device described in the first embodiment for pre-tightening waste

[0056] Figure 20 : Schematic structural diagram of the driving axle housing gripper device described in the first embodiment

[0057] Figure 21 : Schematic structural diagram of the clamp described in the first embodiment

[0058] Figure 22 : Schematic structural diagram of the workpiece after stamping forming in the stamping production line

[0059] Figure 23 : Schematic structural diagram of the workpiece after milling the bevel groove in the machining production line

[0060] Figure 24 : Schematic structural diagram of the workpiece after pre-assembly in the welding production line

[0061] Figure 25 : Schematic structural diagram of the workpiece after group welding in the welding production line

[0062] Figure 26 : Schematic structural diagram of the workpiece after cutting the main reducer mounting hole in the plasma machining process of the main reducer hole

[0063] In the above-mentioned drawings, the descriptions of each reference numeral are as follows:

[0064] 1 - Stamping production line, 11 - Heating furnace, 111 - Feed inlet Ⅰ, 12 - First hydraulic press, 13 - Film laminating machine, 131 - Feed inlet Ⅱ, 14 - Second hydraulic press, 15 - Defilming station, 16 - Cleaning device, 17 - Cooling device, 171 - Ring pipeline, 18 - Half shell shot blasting machine;

[0065] 2 - Machining production line, 21 - Transmission chain Ⅰ, 22 - Numerical control machine tool Ⅰ, 23 - Numerical control machine tool Ⅱ, 24 - Numerical control machine tool Ⅲ, 25 - Numerical control machine tool Ⅳ, 26 - Numerical control machine tool Ⅴ,

[0066] 3 - Welding production line, 31 - Welding robot,

[0067] 32 - Automatic welding positioning device,

[0068] 321 - Base device,

[0069] 322 - Longitudinal positioning device,

[0070] 3221 - Lead screw drive mechanism, 32211 - Servo motor Ⅰ, 32212 - Lead screw Ⅰ, 32213 - Connecting rod Ⅰ,

[0071] 32214 - Support base for end axis alignment mechanism, 32215 - Guide rail Ⅰ, 32216 - Bearing block Ⅰ,

[0072] 32217 - Mounting base for servo motor Ⅰ, 32218 - Slide block Ⅰ,

[0073] 3222 - End axis alignment mechanism, 32221 - Step pin base, 322211 - Guide flat counterbore, 322212 - Threaded hole,

[0074] 32222 - Mounting base for clamping cylinder Ⅰ, 32223 - Clamping cylinder Ⅰ, 32225 - Clamping jaw Ⅰ,

[0075] 32226 - Step pin, 322261 - Guide flat position, 322262 - Bolt hole, 32227 - Y - shaped clamping block,

[0076] 323 - Automatic alignment device, 3231 - Servo motor Ⅱ, 3232 - Driven sliding table,

[0077] 3233 - Mounting support for servo motor Ⅱ, 3234 - Hinge mechanism, 3235 - Driving sliding table, 3236 - Connecting block Ⅱ,

[0078] 3237 - Guide rail Ⅲ, 3238 - Lead screw Ⅱ, 3239 - Bearing block Ⅱ, 32310 - Slide block Ⅲ, 32311 - Roller support,

[0079] 32312 - Roller, 32313 - Laser emitter,

[0080] 324 - Auxiliary clamping device, 3241 - Mounting bracket for auxiliary cylinder, 3242 - Auxiliary cylinder, 3243 - Limit block,

[0081] 3244 - Buffer block, 3245 - Guide rail Ⅱ, 3246 - Sliding table, 3247 - Mounting bracket for clamping cylinder Ⅱ,

[0082] 3248 - Clamping cylinder Ⅱ, 3249 - Clamping jaw Ⅱ, 32410 - Slide block Ⅱ,

[0083] 4 - Plasma processing device for main reducer hole,

[0084] 41 - Plasma cutting robot,

[0085] 42 - Automatic waste removal device, 421 - Horizontal lifting device, 422 - Lifting connection device,

[0086] 423 - Unloading device, 4231 - Cylinder support Ⅱ, 4232 - Cylinder, 4233 - Pull rod, 4234 - Cylinder support Ⅰ,

[0087] 4235 - Base support, 4236 - Guide rail Ⅳ, 4237 - Slide block Ⅳ, 4238 - Slide block mounting seat,

[0088] 4239 - Unloading block, 42391 - Vertical section, 42392 - Bending section, 42310 - Inductor Ⅰ,

[0089] 43 - Drive chain Ⅱ,

[0090] 5 - Handling robot,

[0091] 501 - Handling robot A, 502 - Handling robot B, 503 - Handling robot C, 504 - Handling robot D, 505 - Handling robot E, 506 - Handling robot F,

[0092] 51 - Driving axle housing gripper device, 511 - Clamping device, 5111 - Cross beam, 5112 - Flange,

[0093] 5113 - Gripper cylinder base, 5114 - Gripper cylinder, 5115 - Gripper, 51151 - End hook,

[0094] 5116 - Laser emitter support, 5117 - Laser emitter, 5118 - Anti - slip device, 51181 - Countersunk hole,

[0095] 5119 - Inductor Ⅱ,

[0096] 6 - Shot peening, punching, welding nut, coding station,

[0097] 7 - Workpiece, 71 - Groove, 72 - Weld seam, 73 - Main reducer mounting hole. Detailed implementation mode

[0098] Embodiment 1

[0099] An automated production line for driving axle housing includes an automatic controller, a stamping production line 1, a machining production line 2, a welding production line 3, a main reducer hole plasma processing device 4, and a handling robot 5, all of which are respectively connected to the automatic controller. Among them:

[0100] The described stamping production line 1 is a production line shared by cold stamping and hot stamping, including a heating furnace 11, a first hydraulic press 12 with a small tonnage, a film laminating machine 13, a second hydraulic press 14 with a large tonnage, a cleaning device 16, a cooling device 17, and a half-shell shot blasting machine 18. The heating furnace 11 is installed at the starting end of the stamping production line 1. The first hydraulic press 12 and the second hydraulic press 14 are installed side by side behind the heating furnace 11. Both the first hydraulic press 12 and the second hydraulic press 14 are provided with two workbenches. The first hydraulic press 12 is a 2000t hydraulic press, and the second hydraulic press 14 is a 3000t hydraulic press. The film laminating machine 13 is distributed on one side between the two hydraulic presses. The cleaning device 16 and the cooling device 17 are respectively installed behind the two hydraulic presses. A film removal station 15 is provided between the cleaning device 16 and the second hydraulic press 14. The half-shell shot blasting machine 18 is installed behind the cleaning device 16 and the cooling device 17. A circular pipeline 171 is also installed in the cooling device 17, and this circular pipeline 171 is connected to the cleaning device 16. The specific structures of the heating furnace 11, the first hydraulic press 12, the film laminating machine 13, the second hydraulic press 14, the cleaning device 16, the cooling device 17, and the half-shell shot blasting machine 18 are all prior arts.

[0101] The described machining production line 2 includes a transmission chain I 21, and numerically controlled machine tools I 22, II 23, III 24, IV 25, and V 26 respectively installed on both sides of the transmission chain I 21. The transmission chain I 21, the numerically controlled machine tools I 22, II 23, III 24, IV 25, and V 26 are all well-known technologies.

[0102] The described welding production line 3 includes a welding robot 31 and an automatic welding positioning device 32. The welding robot 31 is a prior art. The automatic welding positioning device 32 includes a base device 321, a longitudinal positioning device 322, an automatic centering device 323, and an auxiliary clamping device 324. There are two sets of the longitudinal positioning devices 322, which are respectively installed on the left and right sides of the base device 321. The automatic centering device 323 is installed in the middle of the base device 321 and is positioned and connected to the middle of the workpiece. The longitudinal positioning device 322 includes a screw drive mechanism 3221 and an end axis centering mechanism 3222. The screw drive mechanism 3221 is installed on the base device 321, and the end axis centering mechanism 3222 is installed on the output end of the screw drive mechanism 3221, and the end axis centering mechanism 3222 is respectively positioned and connected to the left and right ends of the workpiece.

[0103] The described lead screw transmission mechanism 3221 includes a servo motor I 32211, a lead screw I 32212, a connecting rod I 32213, an end axis alignment mechanism support base 32214, and a guide rail I 32215; the servo motor I 32211 is installed on the base device 321 through a servo motor I mounting base 32217, the lead screw I 32212 is supported on the base device 321 through a bearing block I 32216, and one end of the lead screw I 32212 is connected to the output shaft of the servo motor I 32211; the described connecting rod I 32213 is in a "7" shape, one end of the connecting rod I 32213 is threadedly connected to the other end of the lead screw I 32212, the other end of the connecting rod I 32213 is connected to one side plane of the end axis alignment mechanism support base 32214, and the other side plane of the end axis alignment mechanism support base 32214 is connected to the guide rail I 32215 through a slider I 32218; the described guide rail I 32215 is installed on the base device 321; the described end axis alignment mechanism 3222 is fixedly installed on the end axis alignment mechanism support base 32214.

[0104] The described end axis alignment mechanism 3222 includes a step pin base 32221, a gripper cylinder I base 32222, a gripper cylinder I 32223, grippers I 32225, a step pin 32226, and a Y-shaped clamping block 32227; the step pin base 32221 is an "L" block, which is fastened to the end axis alignment mechanism support base 32214 on the same side as the slider I 32218. The end for installing the step pin on the step pin base 32221 is machined with a guiding flat counterbore 322211, and a threaded hole 322212 is machined in the middle of the bottom of the guiding flat counterbore 322211; the gripper cylinder I base 32222 is installed on the step pin base 32221; the gripper cylinder I 32223 is installed on the gripper cylinder I base 32222, and the output ends of the gripper cylinder I 32223 are respectively connected to a pair of opposite grippers I 32225, and the grippers I 32225 are "L" blocks; the described Y-shaped clamping block 32227 is installed on the inner end face of the gripper I 32225, and the inner end face of the Y-shaped clamping block 32227 cooperates with both ends of the workpiece; one end of the step pin 32226 is a stepped cylindrical pin, the other end of the step pin 32226 has a guiding flat position 322261 that cooperates with the guiding flat counterbore of the step pin base, and a bolt hole 322262 is provided in the middle of the step pin 32226. The step pin 32226 is connected to the threaded hole 322212 of the step pin base 32221 through a bolt located in the bolt hole 322262. When the inner diameter of the axle end of the axle housing is different, different steps on the step pin 32226 can be used for positioning; when the steps of the step pin do not meet the axle diameters of other axle housings, the step pin can be quickly switched.

[0105] The described automatic centering device 323 includes a servo motor II 3231, a driven sliding table 3232, a servo motor II mounting bracket 3233, a hinge mechanism 3234, a driving sliding table 3235, a connecting block II 3236, a guide rail III 3237, a lead screw II 3238, a slider III 32310, a roller support 32311, and a roller 32312. The servo motor II 3231 is mounted on the servo motor II mounting bracket 3233. Both the servo motor II mounting bracket 3233 and the bearing block II 3239 are "L" blocks and are respectively mounted on the base device 321. The lead screw II 3238 passes through the bearing block II 3239 and is connected to the output shaft of the servo motor II 3231. The connecting block II 3236 is an "L" block. One end of the connecting block II 3236 is connected to the lead screw II 3238 by a thread, and the other end of the connecting block II 3236 is fastened to the driving sliding table 3235. The driving sliding table 3235 and the driven sliding table 3232 are respectively connected to the guide rail III 3237 through the slider III 32310. The guide rail III 3237 is fastened to the base device 321. The front end of the hinge mechanism 3234 is connected to the driving sliding table 3235, and the end of the hinge mechanism 3234 is connected to the driven sliding table 3232. The middle hinge point of the hinge mechanism 3234 is fastened to the base device 321. The roller supports 32311 are respectively mounted on the driving sliding table 3235 and the driven sliding table 3232. A waist-shaped hole for installing and adjusting the roller 32312 is machined on the roller support 32311. The roller 32312 is fastened to the waist-shaped hole of the roller support 32311 by a fastener. A laser emitter 32313 for detecting whether there is a workpiece on the fixture is also mounted on the roller support 32311.

[0106] The described auxiliary clamping device 324 includes an auxiliary cylinder mounting bracket 3241, an auxiliary cylinder 3242, a guide rail II 3245, a sliding table 3246, a gripper cylinder II bracket 3247, a gripper cylinder II 3248, and a gripper II 3249. The auxiliary cylinder mounting bracket 3241 is fastened to the inner side surface of the base device 321. The guide rail II 3245 is mounted on the inner side surface of the base device 321. The bottom surface of the sliding table 3246 is connected to the guide rail II 3245 through a slider II 32410. The upper surface of the sliding table 3246 is connected to the gripper cylinder II bracket 3247. The side end surface of the sliding table 3246 is connected to the output end of the auxiliary cylinder 3242. The gripper cylinder II 3248 is mounted on the gripper cylinder II bracket 3247, and the output end of the gripper cylinder II 3248 is connected to the gripper II 3249. Four limit blocks 3243 for restricting the stroke of the sliding table are also mounted on the inner side surface of the base device 321, and buffer blocks 3244 are respectively mounted on the four limit blocks 3243.

[0107] The described plasma processing device 4 for the main reducer hole includes a plasma cutting robot 41 and a waste automatic disassembly device 42. The plasma cutting robot 41 is a prior art. The waste automatic disassembly device 42 includes a horizontal lifting device 421, a lifting connection device 422, and a discharging device 423. The discharging device 423 includes a cylinder base, two cylinders 4232, a pull rod 4233, and two discharging blocks 4239. The cylinder base includes a base bracket 4235, a cylinder bracket I 4234, and a cylinder bracket II 4231. The horizontal lifting device 421 is fixed above the workbench. The upper end of the lifting connection device 422 is fixedly connected to the lower end of the horizontal lifting device 421, and the lower end of the lifting connection device 422 is firmly connected to both side surfaces of the base bracket 4235. The cylinder brackets I 4234 are respectively connected to both ends of the base bracket 4235, and the cylinder bracket II 4231 is installed in the middle of the base bracket 4235. The two cylinders 4232 are fixedly arranged on the cylinder base in opposite directions, and the two cylinders 4232 are respectively connected to both ends of the cylinder bracket II 4231. A guide rail IV 4236 is installed at the bottom of the base bracket 4235, and two sliders IV 4237 are slidably connected to the guide rail IV 4236. The bottoms of the two sliders IV 4237 are respectively fixedly connected to the tops of two opposite discharging blocks 4239 through slider mounting seats 4238. The pull rod 4233 is a J-shaped rod. The extending ends of the two cylinders 4232 are respectively hinged to one end of the pull rod 4233, and the other end of the pull rod 4233 is hinged to the slider mounting seat 4238. The discharging block 4239 has a vertical section 42391 for pressing against the inner hole wall of the workpiece, and a bending section 42392 integrally connected to the bottom of the vertical section and extending outward for carrying the workpiece waste. An inductor I 42310 is also installed at the lower end of the vertical section of the discharging block 4239.

[0108] The described handling robot 5 includes handling robot A501, handling robot B502, handling robot C503, handling robot D504, handling robot E505, and handling robot F505; each handling robot includes a handling robot body and a drive axle housing gripper device 51. The handling robot body is a well-known technology; the drive axle housing gripper device includes a clamping device 511, and the clamping device 511 includes a clamping cylinder 5114, a clamp 5115, a cross beam 5111, a clamping cylinder base 5113, an anti-slip device 5118, a laser bracket 5116, a laser emitter 5117 for sensing whether there is a workpiece, and an inductor II 5119 for sensing whether the workpiece is clamped. The output end of the clamping cylinder 5114 is connected to the clamp 5115. The cross beam 5111 is connected to the handling robot body through a flange 5112 mounted thereon; the clamping cylinder base 5113 is fixedly connected to the cross beam 5111; the clamping cylinder 5114 is fastened to the bottom of the clamping cylinder base 5113, and the clamp 5115 is mounted on the output end of the clamping cylinder 5114; the anti-slip device 5118 is mounted on the inner clamping surface of the clamp 5115; the anti-slip device 5118 is an anti-slip pad processed with a countersunk hole 51181, and the anti-slip pad is mounted on the inner clamping surface of the clamp 5115 through a fastener located in the countersunk hole 51181, and the working end face of the anti-slip pad is flush with the end face of the end hook 51151 of the clamp 5115. The length K of the end hook 51151 is 15 - 20 mm; the laser bracket 5116 is an "L" block, and the laser bracket 5116 is fastened to the bottom of the cross beam 5111; the laser emitter 5117 is mounted on the laser bracket 5116; the inductor II 5119 is mounted on the inner clamping surface of the clamp 5115.

[0109] Behind the plasma processing device 4 for the main reducer hole of the present invention, there is also provided a shot peening, punching, welding nut, and coding station 6, and the shot peening, punching, welding nut, and coding processes are respectively carried out at this station.

[0110] The working process of the present invention is as follows:

[0111] 1. Stamping production line

[0112] (1) Hot stamping: The workpiece blank is conveyed from the feeding port I111 to the heating furnace 11, and the heating furnace 11 quickly heats the workpiece blank to 800 degrees. The handling robot A501 transports the workpiece blank into the mold of the first hydraulic press 12 for stamping and forming. The workpiece after stamping and forming is as Figure 22As shown, the handling robot B502 then places the hot-formed half shell into the mold of the second hydraulic press 14 for shaping. The robot C503 carries the formed half bridge shell to the cooling device 17 for air cooling. At the same time, the valve seat of the annular pipe 171 is opened, and the cleaning fluid in the cleaning device 16 takes away the heat in the cooling device 17 through the annular pipe 171 to heat or keep the cleaning fluid warm.

[0113] (2) Cold stamping: The workpiece sheet is transported from the feed port II131 to the laminating machine 13, and the surface of the workpiece sheet is coated with an oil film and a thin film. The robot B502 then transports the workpiece sheet to the mold of the first hydraulic press 12 or the mold of the second hydraulic press 14 (the machine tool tonnage needs to be selected according to the sheet thickness) for stamping. If the workpiece is formed on the mold of the first hydraulic press 12, the second hydraulic press 14 will not work. The slider of the second hydraulic press rises to the highest point and is only used to place the bridge shell transition placement tooling. The handling robot B502 places the bridge shell cold stamped on the mold of the first hydraulic press on the bridge shell transition placement tooling of the second hydraulic press, which is convenient for the handling robot C503 to grab the bridge shell. Robot C503 carries the formed half bridge shell to the film removal station 15 to manually remove the surface film; Robot C503 then carries the half bridge shell after the film is removed to the cleaning device 16 for degreasing and cleaning. Before cleaning, the cleaning liquid needs to be heated to 80 degrees, and the valve of the annular pipe 171 is closed to prevent the cleaning liquid from circulating and dissipating heat to the cooling device 17; if the previous model bridge shell is hot stamped, the cleaning liquid has been heated by the cooling device 17, and it only needs to maintain a constant temperature. The handling robot D504 carries the cleaned or cooled half bridge shell to the shot blasting machine 18 to perform shot blasting to remove the oxide layer on the workpiece surface.

[0114] 2. Machining production line

[0115] The handling robot D504 carries the half bridge housing after shot blasting to the transmission chain and transports it to the CNC machine tool for beveling 71. The workpiece after beveling is as follows: Figure 23 shown.

[0116] 3. Welding production line

[0117] After the handling robot E505 carries the two half-bridge housings to the pre-assembly station for pre-assembly, the pre-assembled workpieces are as follows: Figure 24As shown in the figure, it is then transported to the middle of the rollers of the automatic welding positioning device; while maintaining the clamping state, the laser emitter senses the presence of the workpiece, and the signal continues to be transmitted. Servo motor I drives the longitudinal positioning devices at both ends to move towards the middle by a corresponding distance, so that the step pins corresponding to the steps of the inner diameter of the axle housing half shaft extend into the half shaft, restricting the longitudinal position of the drive axle housing and aligning the longitudinal axis of the drive axle housing. Servo motor II drives the active sliding table to move towards the center of the axle housing, and the hinge mechanism drives the driven sliding table to also move towards the center of the axle housing. The rollers stop when they are about to contact the surface of the drive axle housing, and the handling robot E505 releases the workpiece and resets; at this time, the two half axle housings will spread apart, but due to the step pins restricting the position of the axle housing half shaft diameter and the four rollers restricting the space for the half axle housings to spread outwards; so when the handling robot E505 releases the two half axle housings, the two half axle housings can be suspended on the fixture without falling down; Servo motor II continues to drive. When the two half axle housings are not longitudinally aligned (i.e., the arc convex hulls are not aligned), a certain roller will first contact the arc surface of the axle housing, generating a horizontal component force towards the center of the axle housing, causing the half axle housing to move longitudinally until the half axle housing is automatically aligned and clamped. The signal is transmitted to the gripper cylinder I to drive the gripper I to clamp the outer circular end of the axle housing half shaft. The signal is transmitted to the auxiliary cylinder, which pushes the auxiliary clamping device to move towards the middle until it stops after the end face of the sliding table contacts the buffer block. The signal is transmitted to the gripper cylinder II to drive the gripper II to clamp the middle of the axle housing half shaft. The signal is transmitted to the welding robot to weld the two half axle housings together. The welded workpiece is as shown in Figure 25 shown, and 72 is the weld seam after group welding. After welding is completed, the gripper cylinder II is opened, the auxiliary cylinder drives the auxiliary clamping device to reset, the handling robot E gripper clamps the drive axle housing, the gripper cylinder I is opened, servo motor II drives the driven sliding table and the active sliding table to reset, and servo motor I drives the longitudinal positioning device to reset, and the step pin disengages from the inner diameter of the axle housing half shaft.

[0118] 4. Plasma machining of the main reducer hole

[0119] The handling robot F506 transports the axle housing to the transmission chain II 43 and conveys it to the plasma machining device for the main reducer hole. The plasma cutting robot 41 cuts the contour of the main reducer mounting hole, and the waste automatic disassembly device 42 removes the cut waste. The workpiece after cutting the main reducer mounting hole 73 is as shown in Figure 26 shown.

[0120] 5. Shot peening, punching, welding nuts, and coding

[0121] The axle housing is transported to the shot peening station to remove the welding slag particles inside the axle housing, and then to the oil hole machining station to drill the oil holes, drain holes, and exhaust holes; then the bracket is welded at the inner cavity oil inlet, the nut is welded at the inner cavity drain outlet, and the plug is placed in the plug hole; finally, the plug seat is integrally sealed and welded to the axle housing. Finally, coding is performed on the surface of the axle housing by a laser machine. After coding is completed, it is taken off the production line.

Claims

1. An automated production line for a drive axle housing, comprising an automatic controller, a stamping production line (1), a machining production line (2), a welding production line (3), a plasma machining device for the main reducer hole (4), and a handling robot (5) that are respectively connected to the automatic controller. The welding production line (3) includes a welding robot (31), and the handling robot (5) includes a handling robot body. Characterized in that: The described stamping production line (1) is a production line shared by cold stamping and hot stamping, including a heating furnace (11), a first hydraulic press (12) with a small tonnage, a film laminating machine (13), a second hydraulic press (14) with a large tonnage, a cleaning device (16), a cooling device (17), and a half-shell shot blasting machine (18). The heating furnace (11) is installed at the starting end of the stamping production line (1). The first hydraulic press (12) and the second hydraulic press (14) are installed side by side behind the heating furnace (11). Both the first hydraulic press (12) and the second hydraulic press (14) are provided with a first workbench and a second workbench. The film laminating machine (13) is distributed on one side between the two hydraulic presses. The cleaning device (16) and the cooling device (17) are respectively installed behind the two hydraulic presses, and the half-shell shot blasting machine (18) is installed behind the cleaning device (16) and the cooling device (17). The welding production line (3) further includes an automatic welding positioning device (32), which includes a base device (321), a longitudinal positioning device (322), and an automatic centering device (323). There are two sets of the longitudinal positioning devices (322), which are respectively installed on the left and right sides of the base device (321). The automatic centering device (323) is installed in the middle of the base device (321) and is connected to the middle part of the workpiece for positioning. The longitudinal positioning device (322) includes a lead screw transmission mechanism (3221) and an end axis centering mechanism (3222). The lead screw transmission mechanism (3221) is installed on the base device (321), and the end axis centering mechanism (3222) is installed at the output end of the lead screw transmission mechanism (3221) and is respectively connected to the left and right ends of the workpiece for positioning. The lead screw transmission mechanism (3221) includes a servo motor I (32211), a lead screw I (32212), a connecting rod I (32213), a support seat for the end axis centering mechanism (32214), and a guide rail I (32215). The servo motor I (32211) is installed on the base device (321) through a servo motor I mounting seat (32217). The lead screw I (32212) is supported on the base device (321) through a bearing seat I (32216), and one end of the lead screw I (32212) is connected to the output shaft of the servo motor I (32211). The connecting rod I (32213) is in a "7" shape. One end of the connecting rod I (32213) is connected to the other end of the lead screw I (32212) by thread, and the other end of the connecting rod I (32213) is connected to one side plane of the support seat for the end axis centering mechanism (32214). The other side plane of the support seat for the end axis centering mechanism (32214) is connected to the guide rail I (32215) through a slider I (32218). The guide rail I (32215) is installed on the base device (321). The end axis centering mechanism (3222) is fixedly installed on the support seat for the end axis centering mechanism (32214).The described end axis alignment mechanism (3222) includes a stepped pin base (32221), a gripper cylinder I base (32222), a gripper cylinder I (32223), a gripper I (32225), a stepped pin (32226), and a Y-shaped clamping block (32227); the stepped pin base (32221) is an "L" block and is fastened to the end axis alignment mechanism support base (32214) on the same side as the slider I (32218). A guiding flat counterbore (322211) is machined at the end of the stepped pin base (32221) for installing the stepped pin, and a threaded hole (322212) is machined in the middle of the bottom of the guiding flat counterbore (322211); the gripper cylinder I base (32222) is installed on the stepped pin base (32221); the gripper cylinder I (32223) is installed on the gripper cylinder I base (32222), and the output ends of the gripper cylinder I (32223) are respectively connected to a pair of opposite grippers I (32225), and the gripper I (32225) is an "L" block; the Y-shaped clamping block (32227) is installed on the inner end face of the gripper I (32225), and the inner end face of the Y-shaped clamping block (32227) is matched with the two ends of the workpiece; one end of the stepped pin (32226) is a stepped cylindrical pin, the other end of the stepped pin (32226) has a guiding flat position (322261) matched with the guiding flat counterbore of the stepped pin base, and a bolt hole (322262) is provided in the middle of the stepped pin (32226). The stepped pin (32226) is connected to the threaded hole (322212) of the stepped pin base (32221) through a bolt located in the bolt hole (322262).; 2. The automated production line for a drive axle housing according to claim 1, Characterized in that: A ring-shaped pipe (171) is also installed in the cooling device (17), and the ring-shaped pipe (171) is connected to the cleaning device (16).

3. The automated production line for a drive axle housing according to claim 1, Characterized in that: The automatic centering device (323) includes a servo motor II (3231), a driven sliding table (3232), a servo motor II mounting seat (3233), a hinge mechanism (3234), a driving sliding table (3235), a connecting block II (3236), a guide rail III (3237), a lead screw II (3238), a slider III (32310), a roller support (32311), and a roller (32312); the servo motor II (3231) is installed on the servo motor II mounting seat (3233); the servo motor II mounting seat (3233) and the bearing block II (3239) are both "L" blocks and are respectively installed on the base device (321); the lead screw II (3238) passes through the bearing block II (3239) and is connected to the output shaft of the servo motor II (3231); the connecting block II (3236) is an "L" block, one end of the connecting block II (3236) is connected to the lead screw II (3238) by a thread, and the other end of the connecting block II (3236) is fastened to the driving sliding table (3235); the driving sliding table (3235) and the driven sliding table (3232) are respectively connected to the guide rail III (3237) through the slider III (32310); the guide rail III (3237) is fastened to the base device (321); the front end of the hinge mechanism (3234) is connected to the driving sliding table (3235), and the end of the hinge mechanism (3234) is connected to the driven sliding table (3232); the middle hinge point of the hinge mechanism (3234) is fastened to the base device (321); the roller supports (32311) are respectively installed on the driving sliding table (3235) and the driven sliding table (3232), and a waist-shaped hole for installing and adjusting the roller (32312) is machined on the roller support (32311); the roller (32312) is fastened to the waist-shaped hole of the roller support (32311) by a fastener; a laser emitter I (32313) for detecting whether there is a workpiece on the fixture is also installed on the roller support (32311).

4. The automated production line for a drive axle housing according to claim 3, Characterized in that: The described automatic welding positioning device (32) further includes an auxiliary clamping device (324). The auxiliary clamping device (324) includes an auxiliary cylinder mounting bracket (3241), an auxiliary cylinder (3242), a guide rail II (3245), a sliding table (3246), a gripper cylinder II bracket (3247), a gripper cylinder II (3248), and a gripper II (3249). The auxiliary cylinder mounting bracket (3241) is fastened to the inner side surface of the base device (321). The guide rail II (3245) is installed on the inner side surface of the base device (321). The bottom surface of the sliding table (3246) is connected to the guide rail II (3245) through a slider II (32410). The upper surface of the sliding table (3246) is connected to the gripper cylinder II bracket (3247). The side end surface of the sliding table (3246) is connected to the output end of the auxiliary cylinder (3242). The gripper cylinder II (3248) is installed on the gripper cylinder II bracket (3247), and the output end of the gripper cylinder II (3248) is connected to the gripper II (3249). Four limit blocks (3243) for restricting the stroke of the sliding table are also installed on the inner side surface of the base device (321), and buffer blocks (3244) are respectively installed on the four limit blocks (3243).

5. The drive axle housing automatic production line according to claim 1, characterized in that: The described plasma processing device (4) for the main reducer hole includes a plasma cutting robot (41) and a waste automatic disassembly device (42). The waste automatic disassembly device (42) includes a horizontal lifting device (421), a lifting connection device (422), and a discharging device (423). The discharging device (423) includes a cylinder base, two cylinders (4232), a pull rod (4233), and two discharging blocks (4239). The cylinder base includes a base bracket (4235), a cylinder bracket I (4234), and a cylinder bracket II (4231). The horizontal lifting device (421) is fixed above the workbench. The upper end of the lifting connection device (422) is fixedly connected to the lower end of the horizontal lifting device (421), and the lower end of the lifting connection device (422) is tightly connected to both side surfaces of the base bracket (4235). The cylinder bracket I (4234) is respectively connected to both ends of the base bracket (4235), and the cylinder bracket II (4231) is installed in the middle of the base bracket (4235). The two cylinders (4232) are fixedly arranged on the cylinder base in opposite directions, and the two cylinders (4232) are respectively connected to both ends of the cylinder bracket II (4231). A guide rail IV (4236) is installed at the bottom of the base bracket (4235), and two slider IVs (4237) are slidably connected to the guide rail IV (4236). The bottoms of the two slider IVs (4237) are respectively fixedly connected to the tops of two opposite discharging blocks (4239) through slider mounting seats (4238). The pull rod (4233) is a J-shaped rod. The extending ends of the two cylinders (4232) are respectively hinged to one end of the pull rod (4233), and the other end of the pull rod (4233) is hinged to the slider mounting seat (4238). The discharging block (4239) has a vertical section (42391) for pressing against the inner hole wall of the workpiece and a bending section (42392) integrally connected to the bottom of the vertical section and extending outward for carrying the workpiece waste. An inductor I (42310) is also installed at the lower end of the vertical section of the discharging block (4239).

6. The automated production line for the drive axle housing according to claim 1, characterized in that: The described handling robot (5) further includes a driving axle housing gripper device (51). The driving axle housing gripper device includes a clamping device (511). The clamping device (511) includes a clamping cylinder (5114), a gripper (5115), a cross beam (5111), a clamping cylinder base (5113), and an anti-slip device (5118). The output end of the clamping cylinder (5114) is connected to the gripper (5115). The cross beam (5111) is connected to the handling robot body through a flange plate (5112) mounted thereon. The clamping cylinder base (5113) is fixedly connected to the cross beam (5111). The clamping cylinder (5114) is fastened to the bottom of the clamping cylinder base (5113), and the gripper (5115) is mounted on the output end of the clamping cylinder (5114). The anti-slip device (5118) is mounted on the inner clamping surface of the gripper (5115). The anti-slip device (5118) is an anti-slip pad processed with a countersunk hole (51181). The anti-slip pad is mounted on the inner clamping surface of the gripper (5115) through a fastener located in the countersunk hole (51181), and the working end face of the anti-slip pad is flush with the end face of the end hook (51151) of the gripper (5115). The length K of the end hook (51151) is 15 - 20 mm.

7. The automated production line for driving axle housings according to claim 6, characterized in that: the clamping device (511) further includes a laser emitter bracket (5116), a laser emitter II (5117) for sensing whether there is a workpiece, and an inductor II (5119) for sensing whether the workpiece is clamped. The laser emitter bracket (5116) is an "L" block, and the laser emitter bracket (5116) is fastened to the bottom of the cross beam (5111). The laser emitter II (5117) is mounted on the laser emitter bracket (5116). The inductor II (5119) is mounted on the inner clamping surface of the gripper (5115).

Images