Automatic grinding process for differential housing of new energy vehicle

Abstract

The application discloses a new energy automobile differential shell automatic grinding process, comprising the following steps: collecting the differential shell to be processed into the feeding machine, and feeding the side turning mechanism through the feeding machine, feeding and discharging the side turning and end face polishing through the mechanical arm; then grinding the side and end face of the differential shell through the side turning mechanism and the end face polishing mechanism respectively. Through the modular processing mode, the side turning mechanism and the end face polishing mechanism are arranged, the turning assembly is used through the end face clamping mode to continuously turn the multiple areas of the side of the multiple differential shells, then the clamping mode is changed, the differential end face grinding operation can be carried out at the same time, the automatic grinding process of the whole differential shell is coherent and compact, the production of multiple differential shells can be carried out in batches, and the efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of differential grinding technology, specifically to an automatic grinding process for differential housings in new energy vehicles. Background Technology

[0002] As a key component of the powertrain in new energy vehicles, the differential assembly has a significant impact on the overall vehicle performance. Currently, the differential assembly of pure electric vehicles is mainly designed and manufactured with reference to the differential assembly of traditional vehicles. Since the differential housing blank is a casting, it requires grinding operations in subsequent machining processes, such as... Figure 8 As shown, the parts of the differential housing that need to be ground are the side surface and the end surface of the housing. The side surface of the housing includes the outer circle of the small end, the outer circle of the large end, the outer circle of the outer cylindrical part, and the irregular surface of the irregular part. The end surface of the housing includes the end surface of the small end and the end surface of the large end. At the same time, there are holes on the side surface of the differential housing and holes at both ends.

[0003] According to CN106078439B, a grinding system and method for differential housing blanks is disclosed. This invention automatically grinds the two end faces and outer surface of the differential housing, improving the level of production automation, production efficiency, and product quality. However, this technical solution still has the following technical problems: When grinding the housing, this solution grinds the small end outer circle, the large end outer circle, the outer circle of the outer cylindrical part, the irregular surface of the irregular part, and the two end faces of the housing separately. This makes the overall process complicated, making it difficult to continuously grind batches of housings. The processing is not continuous, and the overall grinding production efficiency is low. Summary of the Invention

[0004] To overcome the aforementioned technical problems, the present invention aims to provide an automatic grinding process for differential housings in new energy vehicles. By setting up a modular processing method, a side turning mechanism and an end face grinding mechanism are set up to perform continuous turning operations and end face grinding operations on multiple areas on the sides of multiple differential housings, which can batch produce multiple differential housings. The processing process is coherent, compact, and highly efficient.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] An automated grinding process for differential housings in new energy vehicles includes the following steps:

[0007] The housings are fed sequentially, and the cast differential housings awaiting processing are collected into the feeder and then conveyed sequentially to the feeder's trough.

[0008] The housing is adjusted for clamping. The feeding trough is divided into a waiting area and a clamping area by a baffle plate. The differential housing located in the clamping area is rotated and adjusted until the holes on the differential housing face upwards, waiting for the robotic arm to clamp it.

[0009] The robotic arm clamps and moves the differential housing, which has been adjusted so that the holes on its side face upwards. The robotic arm clamps the housing by aligning the clamping plate with the holes. Clamping through the holes ensures better clamping accuracy of the housing workpiece.

[0010] For side turning of the housing, the robotic arm clamps and moves the housing workpiece to the side turning station, and clamps the holes at both ends of the housing by rotating the clamping table. The clamping table is aligned with the holes to ensure the coaxiality of multiple housing workpieces and thus ensure the accuracy of the turning operation.

[0011] When changing the machining station, the housing is rotated so that the holes on its side face upwards. The robotic arm clamps the housing by aligning the clamping plate with the holes and moves the workpiece from the turning station to the grinding station. The turning side of the housing can achieve higher clamping accuracy during clamping to ensure the accuracy of subsequent end face grinding.

[0012] The end faces of the housing are ground by clamping the side of the housing with clamping blocks and grinding the end faces of the workpiece with grinding wheels at both ends.

[0013] After the end face is polished, the robotic arm directly cuts the shell workpiece.

[0014] As a further embodiment of the present invention, the turning assembly is configured as a tool-changeable lathe, and the position of the turning tool of the turning assembly can be adjusted radially along the differential housing.

[0015] As a further aspect of the present invention, an automatic grinding device for differential housings of new energy vehicles is included, the automatic grinding device comprising:

[0016] Side turning mechanism, end face grinding mechanism;

[0017] The side turning mechanism includes a turning component and several pairs of clamping plates for positioning and clamping the differential housing. A rotating clamping frustum is rotatably mounted on the inner side of the clamping plate. The turning component is located above the side turning mechanism.

[0018] Several differential housings are axially aligned when clamped on the side turning mechanism.

[0019] The end face grinding mechanism includes a grinding wheel and several pairs of clamping blocks for positioning and clamping the differential housing. The grinding wheel is disposed at both ends of the differential housing.

[0020] The differential housings of the end face grinding mechanism are mounted in a radially aligned manner.

[0021] As a further embodiment of the present invention, it also includes a feeding machine and a material handling mechanism;

[0022] The feeding machine includes a feeding trough and two sets of baffles. The two sets of baffles divide the interior of the feeding trough into a waiting area and a clamping area. The area between the two sets of baffles is the clamping area. The feeding trough is provided with a rotation adjustment component for rotating the shell workpiece at the bottom of the clamping area. A through-beam sensor is provided on the inner side of the two sets of baffles. The through-beam sensor is used to control the start and stop of the rotation adjustment component.

[0023] The material handling mechanism includes a robotic arm and two clamping plates that are adjusted by a clamping push rod. The external shape of the clamping plates corresponds to the shape of the holes on the side of the differential.

[0024] As a further embodiment of the present invention, it also includes a linear motion module. The side turning mechanism includes a base plate and is mounted on the movable slider of the linear motion module. The side turning mechanism also includes a mounting groove fixedly connected to one side of the base plate. A first adjusting screw and a first drive motor for clamping and moving the clamping plate are mounted on the mounting groove. A rotating motor for driving the rotating clamping frustum to rotate is provided on the side of the clamping plate.

[0025] As a further embodiment of the present invention, a gear housing is installed on the side of the clamping plate, and two sets of bevel gears that mesh with each other are rotatably installed inside the gear housing. The rotating motor is installed outside the gear housing, and the rotating motor drives the rotating clamping platform to rotate through the two sets of bevel gears.

[0026] As a further embodiment of the present invention, the end face grinding mechanism includes a base, and two sets of movable seats are slidably mounted on the top of the base via a positioning rod. A second adjusting screw is threaded through the two sets of movable seats. A second drive motor that drives the second adjusting screw to rotate is mounted on the base. Several pairs of clamping blocks are arranged on the base inside the grinding wheel, and drive screws for clamping movement are mounted on the clamping blocks.

[0027] As a further embodiment of the present invention, the grinding wheels are provided in several groups, and the positions of the several groups of grinding wheels correspond to the clamping positions of the several assembly clamping blocks. A grinding motor that drives the grinding wheels to rotate is installed on the movable seat. The grinding motor drives another grinding wheel to rotate through a pulley and a transmission belt.

[0028] As a further embodiment of the present invention, it also includes a receiving trough and two sets of robotic arms, wherein the clamping and reciprocating position of one robotic arm is from the discharge port of the feeder to the clamping position of the side turning mechanism, and the clamping and reciprocating position of the other robotic arm is from the discharge position of the end face grinding mechanism to the clamping position of the side turning mechanism, and from the discharge position of the end face grinding mechanism to the receiving trough.

[0029] The beneficial effects of this invention are:

[0030] By setting up a modular processing method, a side turning mechanism and an end face grinding mechanism are set up. The turning components are used to perform continuous turning operations on multiple areas of the side of multiple differential housings through the end face clamping method. Then, by changing the clamping method, the differential end face grinding operation can be performed simultaneously. This makes the automatic grinding process of the entire differential housing coherent and compact, and multiple differential housings can be produced in batches with high efficiency.

[0031] In this application, the tool position of the turning assembly can be adjusted radially along the differential housing to adapt to the side shape of the differential housing for tool path design. In actual production, the tool-changeable turning assembly can be used to perform preliminary turning and subsequent multiple turning operations on the housings of multiple differentials, thereby ensuring the turning accuracy of the side turning operation. The rotation of the positive and negative screws drives two sets of moving seats and two sets of clamping blocks to move in opposite directions. The opposite movement of the two sets of moving seats drives the grinding wheels to move synchronously inward, thereby better and simultaneously grinding both ends of the differential housing to obtain a better end face grinding effect. The paired clamping blocks are designed with an inwardly inclined shape to fit the shape of the differential housing to obtain a better clamping effect and prevent the housing workpiece from moving during the end face grinding process, thus affecting the grinding effect. Attached Figure Description

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] Figure 1 This is a process flow diagram of the automatic grinding process for the automotive differential housing of the present invention;

[0034] Figure 2 This is a top view schematic diagram of the overall structure of the automatic grinding equipment in this invention;

[0035] Figure 3 This is a top view of the side turning mechanism in this invention.

[0036] Figure 4 In this invention Figure 3 Detailed structural diagram at point A;

[0037] Figure 5 This is a front structural diagram of the side turning mechanism in this invention;

[0038] Figure 6 This is a top view of the end face grinding mechanism in this invention.

[0039] Figure 7 This is a partial structural diagram of the end face grinding mechanism in this invention;

[0040] Figure 8 This is a schematic diagram of a differential housing in the prior art;

[0041] Figure 9 This is a schematic diagram of the structure of the feeding trough and the material handling mechanism in this invention;

[0042] Figure 10 This is a partial schematic diagram of the structure of the feeding trough and the material handling mechanism in this invention;

[0043] Figure 11 This is a schematic diagram of the structure of the through-beam sensor, rotation adjustment assembly, material handling mechanism, etc. in this invention.

[0044] In the picture:

[0045] 1. Feeding machine; 2. Linear movement module; 3. Side turning mechanism; 4. End face grinding mechanism; 5. Material handling mechanism; 6. Material receiving chute;

[0046] 11. Feeding chute; 12. Baffle push rod; 13. Baffle plate; 14. Through-beam sensor; 15. Rotation adjustment assembly;

[0047] 31. Base plate; 32. Turning assembly; 33. First adjusting screw; 34. First clamping plate; 35. Mounting slot; 36. Rotary motor; 37. Gear housing; 38. Rotary clamping frustum; 39. First drive motor; 310. Bevel gear; 311. Support base;

[0048] 41. Base; 42. Movable seat; 43. Positioning rod; 44. Second adjusting screw; 45. Second drive motor; 46. Grinding wheel; 47. Clamping block; 48. Drive screw; 49. Grinding motor; 410. Pulley; 411. Transmission belt;

[0049] 51. Robotic arm; 52. Material handling push rod; 53. Fixing plate; 54. Second clamping plate; 55. Positioning tube; 56. Clamping push rod. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] According to CN106078439B, a grinding system and method for differential housing blanks is disclosed. This invention automatically grinds the two end faces and outer surface of the differential housing, improving the level of production automation, production efficiency, and product quality. However, this technical solution still has the following technical problems: When grinding the housing, this solution grinds the small end outer circle, large end outer circle, outer circle of the outer cylindrical part, irregular surface of the irregular part, and both end faces of the housing in separate areas. This makes the overall process complicated, making it difficult to continuously grind batches of housings. The processing is not compact enough, and the overall grinding production efficiency is low.

[0052] like Figure 1-11 As shown, an automatic grinding process for the differential housing of a new energy vehicle includes the following steps:

[0053] The housings are fed sequentially, and the cast differential housings awaiting processing are collected into the feeder and then conveyed sequentially to the feeder's trough.

[0054] The housing is adjusted for clamping. The feeding trough is divided into a waiting area and a clamping area by a baffle plate. The differential housing located in the clamping area is rotated and adjusted until the holes on the differential housing face upwards, waiting for the robotic arm to clamp it.

[0055] The robotic arm clamps and moves the differential housing, which has been adjusted so that the holes on its side face upwards. The robotic arm clamps the housing by aligning the clamping plate with the holes. Clamping through the holes ensures better clamping accuracy of the housing workpiece.

[0056] For side turning of the housing, the robotic arm clamps and moves the housing workpiece to the side turning station, and clamps the holes at both ends of the housing by rotating the clamping table. The clamping table is aligned with the holes to ensure the coaxiality of multiple housing workpieces and thus ensure the accuracy of the turning operation.

[0057] When changing the machining station, the housing is rotated so that the holes on its side face upwards. The robotic arm clamps the housing by aligning the clamping plate with the holes and moves the workpiece from the turning station to the grinding station. The turning side of the housing can achieve higher clamping accuracy during clamping to ensure the accuracy of subsequent end face grinding.

[0058] The end faces of the housing are ground by clamping the side of the housing with clamping blocks and grinding the end faces of the workpiece with grinding wheels at both ends.

[0059] After the end face is polished, the robotic arm directly cuts the shell workpiece.

[0060] Compared to the aforementioned technical problems, by adopting a modular machining approach, including a side turning mechanism 3 and an end face grinding mechanism 4, multiple areas on the sides of the differential housing can be continuously turned using turning components via end face clamping. Subsequently, by changing the clamping method, the differential end face can be ground simultaneously. This makes the entire automatic grinding process of the differential housing coherent and compact, allowing for the batch production of multiple differential housings with high efficiency. Figure 2-7 As shown, the present invention also provides an automatic grinding equipment for differential housings of new energy vehicles, which includes a side turning mechanism 3 and an end face grinding mechanism 4.

[0061] like Figure 3 As shown, the side turning mechanism 3 includes a turning assembly 32 and several pairs of first clamping plates 34 for positioning and clamping the differential housing. A rotating clamping frustum 38 is rotatably mounted on the inner side of the first clamping plate 34. The turning assembly 32 is positioned above the side turning mechanism 3, and the tool path of the turning assembly 32 corresponds to the clamping position of the differential housing. Specifically, as shown... Figure 3 As shown, the first adjusting screw 33 is configured as a forward and reverse thread screw, and multiple sets of corresponding forward and reverse threads are provided on the first adjusting screw 33. Pairs of first clamping plates 34 are installed at the corresponding forward and reverse thread positions. When the first adjusting screw 33 rotates, the pairs of first clamping plates 34 tighten towards each other, thereby clamping the workpiece. This clamping method involves moving and clamping the workpiece synchronously from both ends to the middle position, making the final clamping and positioning position more accurate and facilitating the subsequent turning tool setting operation of the turning assembly 32.

[0062] In the existing technology, since the differential housing is made by casting, the precision of its outer surface is relatively low. If the outer surface is clamped directly by a common robotic arm, the clamping precision will be too low, which will affect the machining precision of other subsequent processes.

[0063] As a further implementation plan, such as Figures 9-11 As shown, it also includes a feeding machine 1 and a material handling mechanism 5; the feeding machine 1 includes a feeding trough 11 and two sets of baffles 13. The two sets of baffles 13 divide the interior of the feeding trough 11 into a waiting area and a clamping area. The area between the two sets of baffles 13 is the clamping area. The feeding trough 11 is provided with a rotation adjustment component 15 for rotating the shell workpiece at the bottom of the clamping area. The inner side of the two sets of baffles 13 is provided with a through-beam sensor 14, which is used to control the start and stop of the rotation adjustment component 15.

[0064] The material handling mechanism 5 includes a robotic arm 51 and two sets of second clamping plates 54 that are adjusted by clamping push rods 56. The external shape of the second clamping plates 54 corresponds to the shape of the holes on the side of the differential.

[0065] like Figure 10 As shown, a material-picking push rod 52 is installed at the bottom of the robotic arm 51. A fixing plate 53 is fixedly connected to the bottom of the telescopic end of the material-picking push rod 52. Two horizontally arranged clamping push rods 56 are installed at the bottom of the fixing plate 53. The second clamping plate 54 is connected to the telescopic end of the clamping push rod 56. When the telescopic end of the clamping push rod 56 is in the retracted state, the width of the two sets of second clamping plates 54 is smaller than the side hole of the differential. In use, the telescopic end of the clamping push rod 56 pushes the two sets of second clamping plates 54, supporting them inside the hole to clamp the workpiece. At the same time, the second clamping plates 54, whose external shape corresponds to the shape of the side hole of the differential, also improve the clamping accuracy. As a supplement, a positioning tube 55 is provided inside the two sets of second clamping plates 54. The positioning tube 55 includes a slidingly sleeved inner tube and an outer tube.

[0066] like Figure 9 As shown, a baffle push rod 12 is installed on the side of the feeding trough 11. Two sets of baffle plates 13 move through the baffle push rod 12 on the side. Only one shell workpiece can be accommodated in the clamping area at a time. After the workpiece in the clamping area is picked up by the robotic arm 51, the baffle plate 13 near the waiting area moves out of the feeding trough 11, so that the workpiece in the waiting area gradually moves to the clamping area. After moving into the clamping area, the baffle plate 13 moves into the inside of the feeding trough 11.

[0067] Specifically, such as Figure 10 and Figure 11 As shown, the rotation adjustment assembly 15 includes a transmission belt and a rotation motor. The transmission belt is located at the bottom of the feeding trough 11. Two sets of the rotation adjustment assembly 15 can be provided, which are located at the bottom of the large end and the small end of the housing, respectively. That is, the differential housing is driven by the transmission belt.

[0068] Simultaneously, the two sets of through-beam sensors 14 on the inner sides of the two sets of baffles 13 engage in through-beam firing. When the through-beam sensor 14 is in the through-beam receiving state, the controller stops the rotation adjustment assembly 15; when the through-beam sensor 14 is in the through-beam disconnect state, the controller starts the rotation adjustment assembly 15. Figure 10 and Figure 11 As shown, Figure 11 As shown, due to the special shape of the differential housing, when the hole is facing upwards, the height of the middle position of the hole is significantly lower than other positions. Therefore, the through-beam sensor 14 is in the through-beam receiving state only when the hole is facing upwards, that is, the rotation adjustment component 15 is in the stopped state. At this time, the hole on the side of the housing workpiece in the clamping area is in the upward state to facilitate the subsequent clamping of the robotic arm 51. This adjustment method makes the housing hole face upwards, which can better adapt to the subsequent clamping operation of the robotic arm.

[0069] Furthermore, since the differential housing workpiece in the prior art is produced by casting, the accuracy of clamping when clamping its surface with a fixture affects the coaxiality of subsequent parts, thus affecting subsequent side turning and end face grinding operations. This application combines process and equipment. First, during material handling and clamping, a robotic arm 51 is used in conjunction with two sets of second clamping plates 54 to clamp the housing from inside the holes, achieving high clamping accuracy. Then, during the turning operation, the housing is clamped from the holes at both ends by rotating the clamping frustum 38. The shape of the frustum fits the holes, ensuring the coaxiality between multiple differential housings, allowing the turning tool of the turning assembly 32 to more accurately turn the sides of the housing.

[0070] The side of the shell, having passed through the side, now has a high degree of precision. The shell is still clamped with the side holes facing upwards. At this time, the clamping block 47 can also achieve higher precision when clamping the workpiece from the side. The higher clamping precision allows the shell end face to achieve a higher perpendicularity to the shell side when grinding, thereby ensuring the grinding effect of the grinding wheel 46 on both ends of the shell workpiece. Throughout the entire workpiece processing, the processing precision of each process is continuously guaranteed, which is different from the clamping method in the existing technology.

[0071] like Figure 3-5 As shown, the side turning mechanism 3 also includes a mounting groove 35 fixedly connected to one side of the base plate 31. A first adjusting screw 33 and a first drive motor 39 for clamping and moving the first clamping plate 34 are mounted on the mounting groove 35. A rotary motor 36 for driving the rotary clamping frustum 38 to rotate is provided on the side of the first clamping plate 34. Figure 3 As shown, one end of the first clamping plate 34 is slidably disposed inside the mounting groove 35, and the first drive motor 39 is configured as a servo motor to accurately adjust the rotation angle of the first drive motor 39.

[0072] It should be noted that, such as Figure 5 As shown, two sets of through-beam sensors 14 are also installed on the base plate 31 via the support base 311. After the side turning work is completed, the rotating motor 36 is controlled to rotate the workpiece in the same way as described above, so that the hole on the side of the shell workpiece is facing upward, so as to facilitate the subsequent clamping of the robotic arm 51.

[0073] Specifically, such as Figure 4As shown, the rotating clamping table 38 can be driven to rotate in different ways to drive the workpiece to rotate axially, adapting to the side turning process. Here, one driving method is provided: a gear housing 37 is installed on the side of the first clamping plate 34, and two sets of bevel gears 310 that mesh with each other are rotatably installed inside the gear housing 37. The rotating motor 36 is installed outside the gear housing 37, and the rotating motor 36 drives the rotating clamping table 38 to rotate through the two sets of bevel gears 310.

[0074] The side turning mechanism 3 includes a base plate 31 and is mounted on the sliding block of the linear motion module 2 via the base plate 31. The linear motion module 2 is used for the station movement of the side turning mechanism 3 and the movement of the workpiece during the side turning process.

[0075] The differential housings of the side turning mechanism 3 are clamped in an axially aligned manner. This axial alignment ensures that when the rotating clamping platform 38 clamps and rotates the differential housings, the workpieces rotate coaxially, guaranteeing the accuracy of subsequent continuous turning operations. It should be noted that when designing the toolpath of the turning assembly 32, care must be taken to avoid obstructions from structures such as the first clamping plate 34 and the rotating clamping platform 38.

[0076] like Figure 6 As shown, the end face grinding mechanism 4 includes a grinding wheel 46 and several pairs of clamping blocks 47 for positioning and clamping the differential housing. The grinding wheel 46 is disposed at both ends of the differential housing.

[0077] like Figure 2 As shown, the differential housings of the end face grinding mechanism 4 are clamped in a radially aligned manner. The radial alignment ensures that the two ends of the multiple housing workpieces remain aligned after clamping, so that the subsequent grinding wheel 46 can simultaneously grind both ends of the housing.

[0078] like Figure 2 As shown, it also includes a receiving trough 6 and two sets of robotic arms 51. The clamping and reciprocating position of one robotic arm is from the discharge port of the feeder 1 to the clamping position of the side turning mechanism 3, and the clamping and reciprocating position of the other robotic arm is from the discharge position of the side turning mechanism 3 to the clamping position of the end face grinding mechanism 4, and from the discharge position of the end face grinding mechanism 4 to the receiving trough 6.

[0079] In the specific processing, Figure 2 The robotic arm on the right side grabs multiple sets of shell workpieces from the discharge port of the feeder 1 to the clamping position of the side turning mechanism 3. Then, the first clamping plate 34 of the side turning mechanism 3 drives the rotating clamping table 38 to clamp the workpieces. Figure 2The robotic arm on the left side picks up the workpieces that have been side-turned and places them in the clamping position of the end face grinding mechanism 4. Then, the clamping block 47 of the end face grinding mechanism 4 clamps the workpieces and, after the end face grinding is completed, picks up the workpieces from the discharge position of the end face grinding mechanism 4 and places them in the receiving trough 6.

[0080] like Figure 6-7 As shown, the end face grinding mechanism 4 includes a base 41. Two sets of movable seats 42 are slidably mounted on the top of the base 41 via a positioning rod 43. A second adjusting screw 44 is threaded through the two sets of movable seats 42. A second drive motor 45 is mounted on the base 41 to drive the second adjusting screw 44 to rotate. Several pairs of clamping blocks 47 are arranged on the base 41 inside the grinding wheel 46. Drive screws 48 for clamping and moving are mounted on the clamping blocks 47. Figure 6 As shown, the movement of the moving seat 42 and the clamping block 47 can also be set in a similar manner to the two sets of first clamping plates 34. That is, the second adjusting screw 44 and the driving screw 48 are set as positive and negative screws. The rotation of the positive and negative screws drives the two sets of moving seats 42 and the two sets of clamping blocks 47 to move towards each other. The opposite movement of the two sets of moving seats 42 drives the grinding wheel 46 to move inward synchronously, so as to better grind both ends of the differential housing at the same time and obtain a better end face grinding effect. The pair of clamping blocks 47 are set to be inclined inward to fit the shape of the differential housing to obtain a better clamping effect and prevent the housing workpiece from moving during the end face grinding process, which would affect the grinding effect.

[0081] The grinding wheels 46 are arranged in several groups, and the positions of the several groups of grinding wheels 46 correspond to the clamping positions of the several assembly clamping blocks 47. A grinding motor 49 is installed on the movable base 42 to drive the grinding wheels 46 to rotate. The grinding motor 49 drives other grinding wheels 46 to rotate through pulleys 410 and transmission belts 411. By setting multiple grinding wheels 46 to adapt to multiple workstations of the end face grinding mechanism 4, and providing a transmission method between multiple grinding wheels 46, it should be noted that the pulleys 410 and transmission belts 411 are preferably set as synchronous belts and synchronous pulleys to ensure that multiple grinding wheels 46 maintain the same speed, thereby enabling multiple differential housings to obtain similar grinding effects.

[0082] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0083] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0084] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An automatic grinding process for the differential housing of a new energy vehicle, characterized in that, Includes the following steps: The housings are fed sequentially, and the cast differential housings awaiting processing are collected into the feeder and then conveyed sequentially to the feeder's trough. The housing is adjusted for clamping. The feeding trough is divided into a waiting area and a clamping area by a baffle plate. The differential housing located in the clamping area is rotated and adjusted until the hole on the side of the differential housing faces upward, waiting for the robotic arm to clamp it. The robotic arm clamps and transfers the housing. The robotic arm drives the second clamping plate to align and insert into the hole, so that the second clamping plate is supported inside the hole to clamp the housing. For side turning of the housing, the robotic arm clamps and moves the housing workpiece to the side turning station, and clamps the holes at both ends of the housing by rotating the clamping table. When changing the machining station, rotate the housing so that the holes on its side face upwards. The robotic arm clamps the housing by aligning the clamping plate with the holes and moves the workpiece from the side turning station to the grinding station. The end faces of the housing are ground by clamping the side of the housing with clamping blocks and grinding the end faces of the workpiece with grinding wheels at both ends. After the end face is polished, the robotic arm directly cuts the shell workpiece.

2. The automatic grinding process for a differential housing in a new energy vehicle according to claim 1, characterized in that, The differential housing of a new energy vehicle is processed using an automated grinding machine, which includes: Side turning mechanism (3), end face grinding mechanism (4); The side turning mechanism (3) includes a turning component (32) and a first clamping plate (34) for positioning and clamping a plurality of pairs of components for the differential housing. A rotating clamping frustum (38) is rotatably mounted on the inner side of the first clamping plate (34). The turning component (32) is located above the differential housing. Several differential housings are axially aligned when clamped on the side turning mechanism (3); The end face grinding mechanism (4) includes a grinding wheel (46) and a plurality of clamping blocks (47) for positioning and clamping the differential housing. The grinding wheel (46) is disposed at both ends of the differential housing. The differential housings of the end face grinding mechanism (4) are mounted in a radial alignment manner; The turning assembly (32) is configured as a tool-changeable lathe, and the position of the turning tool of the turning assembly (32) can be adjusted radially along the differential housing.

3. The automatic grinding process for a differential housing in a new energy vehicle according to claim 2, characterized in that, The automatic grinding equipment also includes a feeder (1) and a material handling mechanism (5); The feeding machine (1) includes a feeding trough (11) and two sets of baffles (13). The two sets of baffles (13) divide the interior of the feeding trough (11) into a waiting area and a clamping area. The area between the two sets of baffles (13) is the clamping area. A rotation adjustment assembly (15) for driving the workpiece in the housing is provided at the bottom of the clamping area. A through-beam sensor (14) is provided on the inner side of the two sets of baffles (13). The through-beam sensor (14) is used to control the start and stop of the rotation adjustment assembly (15). The material handling mechanism (5) includes a robotic arm (51) and two sets of second clamping plates (54) that are adjusted by clamping push rods (56). The external shape of the second clamping plate (54) corresponds to the shape of the hole on the side of the differential.

4. The automatic grinding process for a differential housing in a new energy vehicle according to claim 2, characterized in that, The automatic grinding equipment also includes a linear motion module (2), and the side turning mechanism (3) includes a base plate (31) and is mounted on the moving slider of the linear motion module (2) through the base plate (31); the side turning mechanism (3) also includes a mounting groove (35) fixedly connected to one side of the base plate (31), and a first adjusting screw (33) and a first drive motor (39) for clamping and moving the first clamping plate (34) are installed on the mounting groove (35), and a rotating motor (36) for driving the rotating clamping frustum (38) to rotate is provided on the side of the first clamping plate (34).

5. The automatic grinding process for a differential housing in a new energy vehicle according to claim 4, characterized in that, A gear housing (37) is installed on the side of the first clamping plate (34). Two sets of bevel gears (310) are rotatably installed inside the gear housing (37) and mesh with each other. The rotating motor (36) is installed outside the gear housing (37) and drives the rotating clamping platform (38) to rotate through the two sets of bevel gears (310).

6. The automatic grinding process for a differential housing in a new energy vehicle according to claim 2, characterized in that, The end face grinding mechanism (4) includes a base (41). Two sets of movable seats (42) are slidably mounted on the top of the base (41) via a positioning rod (43). A second adjusting screw (44) is threaded through the two sets of movable seats (42). A second drive motor (45) for driving the second adjusting screw (44) to rotate is mounted on the base (41). Several pairs of clamping blocks (47) are provided on the base (41) inside the grinding wheel (46). A drive screw (48) for moving the clamping block is mounted on the clamping block (47).

7. The automatic grinding process for a differential housing in a new energy vehicle according to claim 6, characterized in that, The grinding wheel (46) is provided in several groups and the positions of the several groups of grinding wheels (46) are corresponding to the clamping positions of the several assembly clamps (47). The moving seat (42) is equipped with a grinding motor (49) that drives the grinding wheel (46) to rotate.

8. The automatic grinding process for a differential housing in a new energy vehicle according to claim 2, characterized in that, The automatic grinding equipment also includes a receiving trough (6) and two sets of robotic arms (51). The clamping reciprocating position of one robotic arm is from the discharge port of the feeder (1) to the clamping position of the side turning mechanism (3). The clamping reciprocating position of the other robotic arm is from the discharge position of the end face grinding mechanism (4) to the clamping position of the side turning mechanism (3), and from the discharge position of the end face grinding mechanism (4) to the receiving trough (6).

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