Chamfer machining device and method for automobile ball bearing hub unit

Abstract

The invention is suitable for the technical field of machining, and provides an automobile ball bearing hub unit chamfering machining device and method.The automobile ball bearing hub unit chamfering machining device comprises a chamfering product jig and a chamfering tool displacement mechanism, and the chamfering tool displacement mechanism comprises a chamfering machining mechanism, an air cylinder protective cover assembly and a balance weight assembly; the chamfering product jig comprises a chuck mechanism and an air cylinder jacking mechanism, chamfers on the two sides of a product can be machined at the same time, the production takt is greatly improved, the quality stability is greatly improved, the chamfering product jig is suitable for the automobile manufacturing industry, the traceability requirement and the process standardization requirement are met, and the problems in the background technology can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and specifically to a chamfering machining device and method for an automotive ball bearing hub unit. Background Art

[0002] Traditional chamfering of automotive ball bearing hub units mostly adopts turning or grinding processes, which have problems such as low machining efficiency, poor chamfer size consistency, and edge stress concentration, easily leading to a decline in bearing assembly accuracy and a shortening of fatigue life.

[0003] Existing technologies are difficult to balance high-precision machining and surface integrity control. Therefore, in view of the above situation, there is an urgent need to provide a chamfering machining device and method for an automotive ball bearing hub unit to overcome the deficiencies in current practical applications. Summary of the Invention

[0004] The purpose of the present invention is to provide a chamfering machining device and method for an automotive ball bearing hub unit, aiming to solve the problems in the above background art.

[0005] The present invention is implemented as follows. A chamfering machining device for an automotive ball bearing hub unit includes a chamfering product fixture and a chamfering tool displacement mechanism. The chamfering tool displacement mechanism includes a chamfering machining mechanism, a cylinder protection cover assembly, and a counterweight assembly. The chamfering product fixture includes a chuck mechanism and a cylinder lifting mechanism.

[0006] As a further aspect of the present invention: The cylinder protection cover assembly includes a cylinder one, a linear bearing, a baffle, a protection cover one, a guide rod, a mounting plate one, a protection cover two, a gasket one, a water isolation plate, a clamp block, and a floating joint one. The clamp block is arranged on the water isolation plate, and the protection cover one is arranged on the water isolation plate through the protection cover two. The cylinder one, the linear bearing, the guide rod, the mounting plate one, the gasket one, and the floating joint one are assembled on the protection cover one.

[0007] As a further aspect of the present invention: The counterweight assembly includes a cylinder two assembled above the protection cover one, a linear guide rail, an idler shaft, a stop limit block, a mounting block, a cushion block, a gasket two, a cylinder mounting plate, a mounting block, a partition plate, a bellows cover, a sprocket, a floating joint two, a weight member, and a chain.

[0008] As a further solution of the present invention: The chuck mechanism includes a third protective cover and a centripetal bearing, a TG skeleton, a bearing reducer, a chuck fixture cylinder, a locking nut, an oil nozzle, a chuck rotating motor, a rotating shaft, a translation seat, a translation connecting block, a bearing locking rod, a fixed block, a support block, a rotating disk protective cover, a connecting block, a transparent plate, a bearing support block, a bearing limiting block, an accordion mounting plate bushing, an accordion cover, a quick connector, an elbow, a straight-through connector water collecting tray, a slip ring mounting plate, a bearing locking rod, a backing plate, a gear, a chuck jaw, a translation component spray head, a sealing ring spur gear, a rotary joint, a washer, and a guide shaft assembled on the third protective cover.

[0009] As a further solution of the present invention: The cylinder lifting mechanism includes a guide shaft support, a limit nut, a linear bearing, a cylinder, a floating joint, a cylinder mounting plate, a buffer block lifting block, a buffer, and a guide shaft located at the bottom of the third protective cover.

[0010] As a further solution of the present invention: The chamfering mechanism includes a lifting module, a dovetail groove slide rail assembly, and an electric shaft assembly. The lifting module drives the electric spindle assembly to perform lifting actions through the dovetail groove slide rail assembly.

[0011] As a further solution of the present invention: The electric shaft assembly is provided with a chip flushing liquid spray head assembly for facilitating cleaning during processing, a chamfering tool, and a quick replacement and type-changing slider for assisting the chamfering tool.

[0012] As a further solution of the present invention: The dovetail groove slide rail assembly includes a slider, and the electric spindle assembly includes a connecting piece, a brake, a mounting plate, and an electric spindle sequentially installed together.

[0013] As a further solution of the present invention: The counterweight assembly is further provided with a fixed platform frame, and the fixed platform frame includes a rib plate and a mounting plate.

[0014] A chamfering processing method for an automotive ball bearing hub unit uses the above-mentioned chamfering processing device for automotive ball bearing hub units. The method includes the following steps: a. An external handling jaw transports the product to the support block of the fixture chuck. b. The bottom cylinder is pushed out to drive the lifting of the chuck mechanism. c. The chuck fixture cylinder opens the chuck jaws to clamp the inside of the product. d. Cylinder 1 is pushed out, and the second protective cover descends. e. The two chamfering mechanisms drive the chamfering tool to descend. f. The chuck rotating motor starts to rotate. g. The two cylinders 2 retract. h. The self-weight of the counterweight blocks drives the two chamfering mechanisms to process the chamfer of the product. i. During processing, the chuck rotating motor only needs to drive the product to rotate left and right by degrees to chamfer the outer diameter of the product; j. Chamfering processing is completed; k. Cylinder 1 retracts and protective cover 2 rises; l. The chuck fixture cylinder retracts the chuck jaws to release the inside of the product; m. The bottom cylinder retracts to drive the chuck mechanism down; n. The external carrying jaws carry the product away from the support block of the fixture chuck.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the external handling gripper carries the product to the fixture chuck, the bottom cylinder drives the chuck to rise, the gripper cylinder clamps, the guard extends, the two lifting electric cylinders drive the chamfering cutter to descend, the rotary motor rotates, the two separation cylinders retract, and the counterweight block drives the two chamfering cutters to process. During processing, the product only needs to rotate left and right by degrees to chamfer the outer diameter of the product. After processing, the guard retracts, the gripper cylinder releases, the bottom cylinder drives the chuck to descend, the external handling gripper clamps the product, and the fixture cylinder releases; The present invention can process chamfers on both sides of a product at the same time, greatly improving the production cycle and quality stability, is suitable for the automobile manufacturing industry, meets traceability requirements and process standardization needs, and can effectively solve the problems in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the chamfering cutter displacement mechanism in the present invention.

[0019] Figure 3 The plane of the chamfering cutter displacement mechanism in the present invention Figure 1 .

[0020] Figure 4 The plane of the chamfering cutter displacement mechanism in the present invention Figure 2 .

[0021] Figure 5 The plane of the chamfering cutter displacement mechanism in the present invention Figure 3 .

[0022] Figure 6 This is a schematic three-dimensional structure diagram of the chamfering product fixture in the present invention.

[0023] Figure 7 This is the plane of the chamfering product fixture in the present invention Figure 1 .

[0024] Figure 8 This is the plane of the chamfering product fixture in the present invention Figure 2 .

[0025] Figure 9 is Figure 8 a cross-sectional view taken at A - A.

[0026] Figure 10 This is a schematic three-dimensional structure diagram of the chamfering processing mechanism in the present invention.

[0027] Figure 11 This is a plan view of the chamfering processing mechanism in the present invention. Specific Embodiments

[0028] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Next, a further explanatory description of the present invention will be made in conjunction with specific embodiments.

[0032] Please refer to Figures 1 - 11 , a chamfering processing device for an automotive ball bearing hub unit provided by an embodiment of the present invention, includes a chamfering product fixture 1 and a chamfering tool displacement mechanism 2. The chamfering tool displacement mechanism 2 includes a chamfering processing mechanism 231, a cylinder protection cover assembly, and a counterweight assembly. The chamfering product fixture 1 includes a chuck mechanism and a cylinder lifting mechanism; The cylinder protection cover assembly includes a cylinder 1 21, a linear bearing 24, a baffle 29, a protection cover 1 210, a guide rod 211, a mounting plate 1 212, a protection cover 2 214, a gasket 1 224, a water separation plate 225, a clamping block 226, and a floating joint 1 229. The clamping block 226 is arranged on the water separation plate 225, and the protection cover 1 210 is arranged on the water separation plate 225 through the protection cover 2 214. The cylinder 1 21, the linear bearing 24, the guide rod 211, the mounting plate 1 212, the gasket 1 224, and the floating joint 1 229 are assembled on the protection cover 1 210; The counterweight assembly includes a cylinder 2 22 assembled above the protection cover 1 210, a linear guide rail 23, an idler shaft 25, stoppers 27 and 213, a limit block 28, mounting blocks 216 and 217, a cushion block 218, a gasket 2 219, a cylinder mounting plate 220, a mounting block 222, a partition plate 223, a bellows 227, a sprocket 228, a floating joint 2 230, a weight member 232, chains 233 and 234; The chuck mechanism includes a protection cover 3 127 and a centripetal bearing 12, a TG skeleton 13, bearings 14 and 15, a reducer 16, a chuck fixture cylinder 17, a locking nut 18, an oil nozzle 113, a chuck rotation motor 114, a rotating shaft 117, a translation seat 118, a translation connection block 120, a bearing locking rod 121, a fixed block 124, a support block 125, rotating disks 126 and 129, a protection cover 127, a connection block 130, a transparent plate 131, a bearing support block 133, a bearing limit block 134, a bellows mounting plate 136 and 143, a bushing 137, a bellows 149, a quick connector 148, an elbow 147, a straight-through joint 145, a water receiving tray 144, a slip ring mounting plate 142, a bearing locking rod 141, a backing plate 140, a gear 139, a chuck jaw 138, translation components 160 and 161, a nozzle 159, sealing rings 158 and 157, a spur gear 156, a rotary joint 155, a washer 154, a guide shaft 153 assembled on the protection cover 3 127; the chuck fixture cylinder 17 drives three chuck jaws 138 to grasp the product, and the chuck rotation motor 114 and the reducer 16 drive the chuck on the main shaft 121 to rotate through the gear 139 and the spur gear 156. A rotary joint 155 is installed at the bottom of the chuck to supply air to the chuck fixture cylinder 17 and the chuck jaws 138 to prevent the air pipe from rotating and winding. Nozzles 159 and brush heads are installed on both sides of the chuck to clean the product during chamfering; The cylinder lifting mechanism includes a guide shaft support 121, a limit nut 111, a linear bearing 110, a cylinder 19, a floating joint 115, a cylinder mounting plate 116, buffer blocks 122 and 123, a lifting block 135, a buffer 150, and guide shafts 151 and 152 located at the bottom of the protective cover three 127; The chamfering mechanism 31 includes a lifting module, a dovetail slide rail assembly, and an electric shaft assembly. The lifting module drives the electric spindle assembly to move up and down through the dovetail slide rail assembly; The electric shaft assembly is provided with a coolant nozzle assembly 315 for facilitating cleaning during machining, a chamfering tool 316, and a quick-change slider 35 for assisting in the quick replacement of the chamfering tool 316; The dovetail slide rail assembly includes sliders 311 and 312, and the electric spindle assembly includes a connecting piece 33, a brake 34, a mounting plate 38, and an electric spindle 313 that are sequentially installed together. The lifting module drives the electric spindle assembly to move up and down through the dovetail slide rail assembly. Among them, the force on the dovetail slide rail assembly is better than the point force of a common standard guide rail. The electric spindle assembly is equipped with a coolant nozzle assembly for facilitating cleaning during machining, and also has a chamfering tool 316. When changing the type of the chamfering tool 316, there is a quick-change slider to assist in the tool change, which can save the tool-changing space, and the tool change can be completed with a single-handed wrench. The electric spindle 313 has an air vent joint for convenient circulating air cooling; The counterweight assembly is also provided with a fixed bench. The fixed bench includes a rib plate 215, mounting plates 26 and 212, an oil injection summary block 221, and a set of counterweight sheet metal protective covers 223. The guide rail 23 is provided with a chamfering mechanism 231. The chamfering mechanism 231 is connected with a certain counterweight 232 and two guide rod separating cylinders 22. When the product is not chamfered, the cylinders 22 push the two chamfering mechanisms 231 to separate. When the product is machined, the two cylinders 22 retract, and the two chamfering mechanisms 231 rely on the counterweight 232 to approach the outer diameters of both sides of the product at the same time. The chamfering of the product is processed by the limit position movable joint block 27 defined by the joint 230 on the cylinder 22. When dealing with different product outer diameters, the movable joint block 27 in direct contact with the cylinder 22 is changed to achieve the purpose of chamfering different product outer diameters.

[0033] In an embodiment of the present invention, when the external handling gripper transports the product to the fixture chuck, the bottom cylinder drives the chuck to lift, the gripper cylinder clamps, the protective cover extends, the two lifting electric cylinders drive the chamfering tool to descend, the rotating motor rotates, the two separating cylinders retract, and the weight of the counterweight drives the two chamfering tools to process. During processing, the product only needs to rotate 90° to the left and right to chamfer the outer diameter of the product. After processing, the protective cover retracts, the gripper cylinder releases, the bottom cylinder drives the chuck to descend, the external handling gripper grips the product, and the fixture cylinder releases. The present invention can process the chamfers on both sides of the product simultaneously, greatly improving the production rhythm and quality stability, being applicable to the automotive manufacturing industry, meeting the requirements of traceability and process standardization, and effectively solving the problems in the background technology.

[0034] Please refer to Figures 1 - 11 , a chamfering processing method for an automotive ball bearing hub unit provided by an embodiment of the present invention, using the above-mentioned chamfering processing device for an automotive ball bearing hub unit, the method includes the following steps: a. The external handling gripper transports the product to the support block 125 of the fixture chuck as Figure 3 ; b. As Figure 3 , the bottom cylinder 19 is pushed out to drive the chuck mechanism to lift; c. As Figure 3 , the disk fixture cylinder 17 opens the chuck gripper 138 to clamp the inside of the product; d. As Figure 2 , the first cylinder 21 is pushed out and the second protective cover 214 descends; e. As Figure 2 , the two chamfering processing mechanisms 231 drive the chamfering tool to descend; f. As Figure 3 , the chuck rotating motor 114 starts to rotate; g. As Figure 2 , the two second cylinders 22 retract; h. As Figure 2 , the weight of the counterweight drives the two chamfering processing mechanisms 231 to process the chamfer of the product; i. During processing, the chuck rotating motor 114 only needs to drive the product to rotate 90° to the left and right to chamfer the outer diameter of the product; Figure 3 j. The chamfering processing ends; k. As l. As Figure 2 , the first cylinder 21 retracts and the second protective cover 214 rises; m. As Figure 3 , the chuck fixture cylinder 17 retracts and the chuck gripper 138 releases the inside of the product; n. As Figure 3 , the bottom cylinder 19 retracts to drive the chuck mechanism to descend; n. The external handling jaws carry the product away from the fixture chuck, such as Figure 3 on the support block 125.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automobile ball bearing hub unit chamfering processing device, characterized in that, It includes a chamfering product fixture and a chamfering tool displacement mechanism. The chamfering tool displacement mechanism includes a chamfering processing mechanism, a cylinder protective cover assembly, and a counterweight assembly. The chamfering product fixture includes a chuck mechanism and a cylinder lifting mechanism.

2. The chamfering processing device for the automotive ball bearing hub unit according to claim 1, characterized in that The cylinder protective cover assembly includes a cylinder 1, a linear bearing, a baffle, a protective cover 1, a guide rod, a mounting plate 1, a protective cover 2, a gasket 1, a water separation plate, a clamp block, and a floating joint 1. The clamp block is arranged on the water separation plate, and the protective cover 1 is arranged on the water separation plate through the protective cover 2. The cylinder 1, the linear bearing, the guide rod, the mounting plate 1, the gasket 1, and the floating joint 1 are assembled on the protective cover 1.

3. The chamfering processing device for an automotive ball bearing hub unit according to claim 2, characterized in that, The counterweight assembly includes a cylinder 2 assembled above the protective cover 1, a linear guide rail, an idler shaft, a stop block limit block, a mounting block, a cushion block, a gasket 2, a cylinder mounting plate, a mounting block, a partition board, a bellows cover, a sprocket, a floating joint 2, a weight member, and a chain.

4. The chamfering processing device for an automotive ball bearing hub unit according to claim 3, wherein The chuck mechanism includes a protective cover 3 and a centripetal bearing, a TG skeleton, a bearing reducer, a chuck fixture cylinder, a locking nut, an oil nozzle, a chuck rotating motor, a rotating shaft, a translation seat, a translation connecting block, a bearing locking rod, a fixed block, a support block, a rotating disk protective cover, a connecting block, a transparent plate, a bearing support block, a bearing limit block, a bellows mounting plate bushing, a bellows cover, a quick connector, an elbow, a straight-through joint water receiving tray, a slip ring mounting plate, a bearing locking rod, a backing plate, a gear, a chuck jaw, a translation component spray head, a sealing ring spur gear, a rotary joint, a washer, and a guide shaft assembled on the protective cover 3.

5. The chamfering processing device for an automotive ball bearing hub unit according to claim 4, characterized in that, The cylinder lifting mechanism includes a guide shaft support, a limit nut, a linear bearing, a cylinder, a floating joint, a cylinder mounting plate, a buffer block lifting block, a buffer, and a guide shaft located at the bottom of the protective cover 3.

6. The chamfering processing device for an automotive ball bearing hub unit according to claim 5, characterized in that, The chamfering processing mechanism includes a lifting module, a dovetail groove slide rail assembly, and an electric shaft assembly. The lifting module drives the electric spindle assembly to perform lifting actions through the dovetail groove slide rail assembly.

7. The chamfering processing device for the automotive ball bearing hub unit according to claim 6, characterized in that, The electric shaft assembly is provided with a chip flushing liquid spray head assembly for facilitating cleaning during processing, a chamfering tool, and a quick replacement and type change slider for assisting the chamfering tool.

8. The chamfering processing device for an automotive ball bearing hub unit according to claim 7, characterized in that, The dovetail groove slide rail assembly includes a slider, and the electric spindle assembly includes a connecting piece, a brake, a mounting plate, and an electric spindle sequentially installed together.

9. The chamfering processing device for an automotive ball bearing hub unit according to claim 8, characterized in that A fixed bench is further arranged on the counterweight assembly. The fixed bench includes a rib plate and a mounting plate.

10. A chamfering processing method for an automotive ball bearing hub unit, characterized in that, Using the automotive ball bearing hub unit chamfering processing device as described in claim 9, the method includes the following steps: a. The external handling gripper transports the product to the support block of the fixture chuck. b. The bottom cylinder is pushed out to drive the chuck mechanism to lift. c. The chuck fixture cylinder opens the chuck jaws to clamp the inside of the product. d. The cylinder 1 is pushed out, and the protective cover 2 descends. e. The two chamfering processing mechanisms drive the chamfering tool to descend. f. The chuck rotating motor starts to rotate. g. The two cylinders 2 retract. h. The self-weight of the counterweight block drives the two chamfering processing mechanisms to process the chamfer of the product. i. During processing, the chuck rotating motor only needs to drive the product to rotate left and right by ° to chamfer the outer diameter of the product. j. The chamfering processing ends. k. The cylinder 1 retracts, and the protective cover 2 rises. l. The chuck fixture cylinder retracts, and the chuck jaws loosen the inside of the product. m. The bottom cylinder retracts to drive the chuck mechanism to descend. n. The external handling gripper removes the product from the support block of the fixture chuck.

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