High-precision machining lathe for hub bearing

Abstract

The utility model belongs to the technical field of bearing machining, and particularly relates to a hub bearing high-precision machining lathe which comprises a workbench, two cutters controlled by a first electric telescopic rod are installed on the upper side of the workbench, a polishing motor controlled by a second electric telescopic rod is installed in an equipment cavity, and a polishing wheel is installed on an output shaft of the polishing motor. A plurality of first placing blocks are fixedly arranged on the upper side of the workbench, a plurality of second placing blocks are installed on the upper side of the workbench, a first pressing block and a second pressing block which are controlled by a hydraulic cylinder are slidably assembled on the upper side of the workbench, and a rotating assembly is arranged on the upper side of the workbench; a to-be-machined part is placed on the upper side of a first containing table or a second containing table, a hydraulic cylinder drives a first pressing block and a second pressing block to clamp the to-be-machined part, the to-be-machined part is driven to rotate through a rotating assembly, a cutter cuts the to-be-machined part, a grinding wheel grinds the cut to-be-machined part, and the to-be-machined part does not need to be carried and transferred; errors caused by multiple times of clamping are reduced, and the machining precision is improved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing processing technology, specifically relating to a high-precision machining lathe for wheel hub bearings. Background Technology

[0002] As a core component of the automotive chassis system, wheel bearings directly affect the vehicle's stability, safety, and service life. Traditional wheel bearing manufacturing processes typically employ a step-by-step machining method for the inner and outer slideways: first, the blanks of the inner and outer slideways are roughed and semi-finished using a CNC lathe, and then transferred to a dedicated grinding machine for fine grinding to achieve high-precision surface roughness and geometric tolerance requirements. However, the step-by-step machining of the inner and outer slideways requires multiple clamping operations, which easily introduces clamping errors, affecting the coaxiality and roundness of the inner and outer slideways. At the same time, accumulated errors can lead to excessive clearance after bearing assembly, reducing load-bearing capacity and lifespan, resulting in low processing efficiency and increased costs. Traditional processes require multiple machines to work together, increasing the processing time per piece. Therefore, a high-precision wheel bearing machining lathe is needed to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a high-precision machining lathe for wheel hub bearings. By placing the workpiece to be machined on the upper side of a first or second placement table, a hydraulic cylinder drives a first and a second pressure block to clamp the workpiece, and a rotating assembly drives the workpiece to rotate. A cutting tool cuts the workpiece, and a grinding wheel grinds the cut workpiece. This eliminates the need to transport the workpiece, reduces errors caused by multiple clamping operations, and improves machining accuracy.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0005] A high-precision machining lathe for wheel hub bearings includes a worktable with an internal equipment cavity. An annular hole communicating with the equipment cavity is formed on the upper side of the worktable. A tool holder is slidably mounted on the upper side of the worktable, and two centrally symmetrical cutting tools are installed on the tool holder. A mounting base is slidably mounted within the equipment cavity, and a connecting block is installed between the mounting base and the tool holder. A first electric telescopic rod is fixedly mounted within the equipment cavity, and its output end is fixedly connected to the mounting base. A second electric telescopic rod is fixedly mounted within the equipment cavity. A grinding motor is installed within the equipment cavity, and a grinding wheel is mounted on one end of the grinding motor that extends upward through the annular hole. The output end of the second electric telescopic rod is connected to... The grinding motor is fixedly connected. A plurality of first placement blocks arranged in a circular pattern are fixedly provided on the upper side of the worktable. A plurality of second placement blocks arranged in a circular pattern are installed on the upper side of the worktable. A first pressure block matching the plurality of first placement blocks is slidably mounted on the upper side of the worktable. A second pressure block matching the plurality of second placement blocks is slidably mounted on the upper side of the worktable. A connecting plate is fixedly provided on the upper side of the first pressure block and the second pressure block. A hydraulic cylinder is fixedly provided on the upper side of the worktable. A round shaft is concentrically fixed on the upper side of the connecting plate. The round shaft is rotatably mounted on the lower side of the output end of the hydraulic cylinder. A rotating component matching the round shaft is provided on the upper side of the worktable. A control component matching the plurality of second placement blocks is provided on the upper side of the worktable.

[0006] The rotating assembly includes a first gear concentrically fixed on the upper side of the circular shaft, a rotating motor fixedly installed at the output end of the hydraulic cylinder, and a second gear meshing with the first gear concentrically fixed on the output shaft of the rotating motor.

[0007] The control component includes a plurality of T-slots on the upper side of the worktable that match the second placement blocks, a T-block that matches the T-slots fixed on the lower side of each of the second placement blocks, a screw fixed on the upper side of the worktable, a knob that matches the screw rotatably mounted on the upper side of the worktable, a ring fixed on the lower side of the knob, and a connecting rod that is hinged together between the ring and the plurality of the second placement blocks.

[0008] Both the first placement block and the second placement block are rotatably fitted with ball bearings on their upper sides.

[0009] An arc-shaped baffle is fixedly installed on the upper side of the grinding motor, and a guide plate is fixedly installed on one side of the connecting block.

[0010] Both the first pressing block and the second pressing block have several magnetic blocks fixedly arranged in a circular pattern on their lower sides.

[0011] This invention places the workpiece to be processed on the upper side of a first or second placement platform. A hydraulic cylinder drives a first and a second pressure block to clamp the workpiece, and a rotating assembly drives the workpiece to rotate. A cutter cuts the workpiece, and a grinding wheel grinds the cut workpiece. This eliminates the need to transport the workpiece, reduces errors caused by multiple clamping operations, and improves processing accuracy. Attached Figure Description

[0012] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of a high-precision machining lathe for wheel hub bearings according to the present invention;

[0014] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of a high-precision machining lathe for wheel hub bearings according to this utility model;

[0015] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0016] Figure 4 for Figure 2 A magnified structural diagram at point B in the middle.

[0017] The symbols for the main components are explained below:

[0018] Workbench 10, Equipment cavity 11, Tool holder 12, Cutting blade 13, Mounting base 14, First electric telescopic rod 15, Second electric telescopic rod 16, Grinding motor 17, Grinding wheel 18, First placement block 19, Second placement block 20, First pressure block 21, Second pressure block 22, Connecting plate 23, Hydraulic cylinder 24, Round shaft 25, First gear 30, Rotary motor 31, Second gear 32, T-slot 35, Screw 36, Knob 37, Ring 38, Connecting rod 39, Ball bearing 40, Arc baffle 41, Guide plate 42, Magnetic block 45. Detailed Implementation

[0019] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-4As shown, this utility model discloses a high-precision machining lathe for wheel hub bearings, including a worktable 10. The worktable 10 has an internal equipment cavity 11. An annular hole communicating with the equipment cavity 11 is formed on the upper side of the worktable 10. A tool holder 12 is slidably mounted on the upper side of the worktable 10, and two centrally symmetrical cutting tools 13 are installed on the tool holder 12. A mounting base 14 is slidably mounted inside the equipment cavity 11, and a connecting block is installed between the mounting base 14 and the tool holder 12. A first electric telescopic rod 15 is fixedly installed inside the equipment cavity 11, and its output end is fixedly connected to the mounting base 14. A second electric telescopic rod 16 is fixedly installed inside the equipment cavity 11. A grinding motor 17 is installed inside the equipment cavity 11, and a grinding wheel 18 is installed at one end of the output shaft of the grinding motor 17 extending upwards from the annular hole. The output end of 6 is fixedly connected to the grinding motor 17. Several first placement blocks 19 are fixedly arranged in a circle on the upper side of the worktable 10. Several second placement blocks 20 are arranged in a circle on the upper side of the worktable 10. A first pressure block 21 matching the several first placement blocks 19 is slidably assembled on the upper side of the worktable 10. A second pressure block 22 matching the several second placement blocks 20 is slidably assembled on the upper side of the worktable 10. A connecting plate 23 is fixedly provided on the upper side of the first pressure block 21 and the second pressure block 22. A hydraulic cylinder 24 is fixedly provided on the upper side of the worktable 10. A round shaft 25 is concentrically fixed on the upper side of the connecting plate 23. The round shaft 25 is rotatably installed on the lower side of the output end of the hydraulic cylinder 24. A rotating component matching the round shaft 25 is provided on the upper side of the worktable 10. A control component matching the several second placement blocks 20 is provided on the upper side of the worktable 10.

[0021] The rotating assembly includes a first gear 30 concentrically fixed on the upper side of a round shaft 25, a rotating motor 31 fixedly mounted on the output end of a hydraulic cylinder 24, and a second gear 32 that meshes with the first gear 30 concentrically fixed on the output shaft of the rotating motor 31.

[0022] The control components include a number of T-slots 35 that match the second placement blocks 20 on the upper side of the worktable 10, T-blocks that match the T-slots 35 that are fixed on the lower side of the second placement blocks 20, a screw 36 that is fixed on the upper side of the worktable 10, a knob 37 that matches the screw 36 that is rotatably mounted on the upper side of the worktable 10, a ring 38 that is fixed on the lower side of the knob 37, and a connecting rod 39 that is hinged between the ring 38 and the number of second placement blocks 20.

[0023] In use, the user installs the inner or outer ring of the bearing and places the workpiece on the first placement platform 19 or the second placement platform 20. When placed on the second placement platform 20, the user rotates the knob 37, which causes the ring 38 to descend. This descends the ring 38, which in turn moves the second placement block 20 via the connecting rod 39, clamping and fixing the workpiece. The hydraulic cylinder 24 is then activated, causing the first pressure block 21 and the second pressure block 22 to descend and contact the workpiece. The rotating motor 31 drives the circular shaft 25 to rotate via the first gear 30 and the second gear 32. The circular shaft 25 then drives the first pressure block 21 and the second pressure block 22 to rotate. The second pressure block 22 rotates, thereby driving the workpiece to rotate. The second electric telescopic rod 16 drives the mounting base 14 to move. The workpiece is cut by the cutter 13. After the slideway is processed, the output end of the second electric telescopic rod 16 drives the cutter 13 away from the workpiece. The output end of the first electric telescopic rod 15 drives the grinding motor 17 to move, so that the grinding wheel 18 comes into contact with the slide. The grinding motor 17 drives the grinding wheel 18 to rotate. The rotating motor 31 drives the workpiece to rotate, thereby grinding the slideway that has just been cut, improving the bearing precision and processing efficiency.

[0024] Furthermore, by providing a movable second placement block 20, it is convenient for users to pick up and place the workpieces.

[0025] Furthermore, this device can process the inner and outer rings of the bearing sequentially, improving the ease of use of the device;

[0026] Furthermore, the workbench 10 of this utility model is equipped with a collection box inside, and cutting fluid and debris during use fall into the collection box through the annular hole for easy processing;

[0027] This invention places the workpiece to be processed on the upper side of a first or second placement platform. A hydraulic cylinder drives a first and a second pressure block to clamp the workpiece, and a rotating assembly drives the workpiece to rotate. A cutter cuts the workpiece, and a grinding wheel grinds the cut workpiece. This eliminates the need to transport the workpiece, reduces errors caused by multiple clamping operations, and improves processing accuracy.

[0028] Both the first placement block 19 and the second placement block 20 are rotatably fitted with ball bearings 40 on their upper sides; this reduces the frictional resistance between the workpiece and the first placement block 19 and the second placement block 20, making it easier for the workpiece to rotate.

[0029] An arc-shaped baffle 41 is fixedly provided on the upper side of the grinding motor 17, and a guide plate 42 is fixedly provided on one side of the connecting block; to prevent cutting fluid and debris from affecting the operation of the grinding motor 17, the first electric telescopic rod 15 and the second electric telescopic rod 16.

[0030] Both the first pressing block 21 and the second pressing block 22 have several magnetic blocks 45 fixedly arranged in a circular pattern on their lower sides, which facilitates the user in placing and picking up the workpiece.

[0031] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A high-precision machining lathe for wheel hub bearings, comprising a worktable, characterized in that: The workbench has an internal equipment cavity. An annular hole communicating with the equipment cavity is formed on the upper side of the workbench. A tool holder is slidably mounted on the upper side of the workbench, and two centrally symmetrical cutting blades are installed on the tool holder. A mounting base is slidably mounted inside the equipment cavity, and a connecting block is installed between the mounting base and the tool holder. A first electric telescopic rod is fixedly mounted inside the equipment cavity, and its output end is fixedly connected to the mounting base. A second electric telescopic rod is fixedly mounted inside the equipment cavity. A grinding motor is installed inside the equipment cavity, and a grinding wheel is installed at one end of the grinding motor's output shaft extending upwards from the annular hole. The output end of the second electric telescopic rod is fixedly connected to the grinding motor. The worktable has several first placement blocks arranged in a circular pattern fixed on its upper side, several second placement blocks arranged in a circular pattern installed on its upper side, a first pressure block matching the first placement blocks slidably mounted on its upper side, a second pressure block matching the second placement blocks slidably mounted on its upper side, a connecting plate fixedly mounted on the upper side of the first and second pressure blocks, a hydraulic cylinder fixedly mounted on its upper side, a circular shaft concentrically fixed on the upper side of the connecting plate, the circular shaft rotatably mounted on the lower side of the output end of the hydraulic cylinder, a rotating assembly matching the circular shaft on its upper side, and a control component matching the second placement blocks on its upper side.

2. The high-precision machining lathe for wheel hub bearings according to claim 1, characterized in that: The rotating assembly includes a first gear concentrically fixed on the upper side of the circular shaft, a rotating motor fixedly installed at the output end of the hydraulic cylinder, and a second gear meshing with the first gear concentrically fixed on the output shaft of the rotating motor.

3. The high-precision machining lathe for wheel hub bearings according to claim 1, characterized in that: The control component includes a plurality of T-slots on the upper side of the worktable that match the second placement blocks, a T-block that matches the T-slots fixed on the lower side of each of the second placement blocks, a screw fixed on the upper side of the worktable, a knob that matches the screw rotatably mounted on the upper side of the worktable, a ring fixed on the lower side of the knob, and a connecting rod that is hinged together between the ring and the plurality of the second placement blocks.

4. The high-precision machining lathe for wheel hub bearings according to claim 1, characterized in that: Both the first placement block and the second placement block are rotatably fitted with ball bearings on their upper sides.

5. A high-precision machining lathe for wheel hub bearings according to claim 1, characterized in that: An arc-shaped baffle is fixedly installed on the upper side of the grinding motor, and a guide plate is fixedly installed on one side of the connecting block.

6. The high-precision machining lathe for wheel hub bearings according to claim 1, characterized in that: Both the first pressing block and the second pressing block have several magnetic blocks fixedly arranged in a circular pattern on their lower sides.

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