Novel workbench structure for train wheel machining
By employing a combination of a three-jaw self-centering chuck and crossed roller bearings on the vertical lathe worktable, the problems of precise workpiece position adjustment and error accumulation in existing technologies have been solved, achieving high-precision and stable machining of train wheels.
Patent Information
- Application Number
- CN202423172706.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The existing vertical lathe worktable uses a common three-jaw chuck to manually adjust the clamping force, which makes it difficult to guarantee the position and accuracy of the workpiece. In addition, the assembly of combined bearings is prone to accumulated errors, affecting the machining accuracy.
The system employs a combination of a three-jaw self-centering chuck, crossed roller bearings, gear ring, gears, drive shaft, shift fork, hydraulic cylinder, clamping cylinder, and locking rod to ensure smooth and precise workpiece rotation. Automatic gear shifting and clamping are achieved through a hydraulic system.
It improves the rigidity and stability of the worktable, reduces machining errors, ensures high-precision machining, can withstand large cutting forces and workpiece weight, and prevents workpiece displacement or loosening during rotation and machining.
Smart Images
Figure CN223629535U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a novel workstation structure for train wheel machining belongs to mechanical technical field. BACKGROUND
[0002] As the main machining equipment in manufacturing industry, the machining precision of numerical control machine tool is one of the important standards for evaluating the performance of numerical control machine tool. The stability of the worktable has a crucial influence on the machining precision of the workpiece, therefore, ensuring the stability of the worktable is the first element of controlling precision.
[0003] Most of the existing vertical lathe worktables use ordinary three-jaw chucks, which need to be manually adjusted for clamping force. When clamping the workpiece, it is not easy to ensure the position and precision of the workpiece, and it is not suitable for high-precision machine tools. Moreover, most of the bearings used are combined bearings, which are prone to cumulative errors during assembly, affecting the overall machining precision. SUMMARY
[0004] In order to overcome the shortcomings of the prior art, the utility model provides a novel workstation structure for train wheel machining, which can effectively ensure the rotational stability of the clamped workpiece and meet the requirements of precision machining of parts.
[0005] The technical scheme adopted by the utility model to solve its technical problems is: a novel workstation structure for train wheel machining, comprising a three-jaw self-centering chuck, a cross roller bearing, a gear ring, a gear, a transmission shaft, a yoke, an oil cylinder, a clamping oil cylinder and a locking rod, the three-jaw self-centering chuck is installed on the machine tool worktable top, a cross roller bearing is installed in the worktable base at the position corresponding to the three-jaw self-centering chuck, a gear ring is installed outside the cross roller bearing, the centers of the three-jaw self-centering chuck, the cross roller bearing and the gear ring are located on the same axis.
[0006] On one side of the gear ring, a plurality of vertical transmission shafts are installed in the worktable base, a plurality of gears meshing with each other are installed on the transmission shafts, and the gear ring is connected with the adjacent gears; on one side of the three-jaw self-centering chuck, a clamping oil cylinder is installed horizontally on the worktable; on one side of the clamping oil cylinder, an oil cylinder is installed vertically in the worktable; the piston end of the oil cylinder faces downward, the yoke is arranged horizontally, and the yoke and the piston end of the oil cylinder are located in the worktable base; the piston end of the oil cylinder is fixedly connected with the middle position of the yoke.
[0007] Between the clamping oil cylinder and the oil cylinder, a vertical locking rod is arranged in the worktable, the locking rod is close to the piston rod of the clamping oil cylinder, the lower end of the locking rod is fixedly connected with one end of the yoke, and the other end of the yoke is matched with a vertical guide rod.
[0008] The utility model discloses beneficial effect is: the utility model rigidity is high, and the structure design of workbench base is reasonable, adopts high -strength material and optimization structure design, can keep stable in the processing, avoids the influence machining accuracy because of deformation or vibration, good stability, and the inside parts of workbench are through accurate processing and assembly, ensure the cooperation precision between every part is high, still can keep stable performance under the condition of high -speed rotation and long -time operation, reduces the error produced when processing, big carrying capacity, workbench adopts optimization structure design, can bear bigger cutting force and workpiece weight, good clamping effect, three -jaw self -centering chuck has reliable clamping device, can firmly fix workpiece on workbench, prevents workpiece displacement or slack in the rotation and processing, ensures machining accuracy. BRIEF DESCRIPTION OF DRAWINGS
[0009] The utility model is further explained below in combination with the drawings and specific embodiment.
[0010] Figure 1 It is the structure schematic diagram of the utility model.
[0011] Figure 2 It is the position schematic diagram of the utility model's shift fork.
[0012] Mark in drawing:
[0013] 1, three -jaw self -centering chuck, 2, crossed roller bearing, 3, gear ring, 4, gear, 5, transmission shaft, 6, shift fork, 7, oil cylinder, 8, clamping oil cylinder, 9, lock rod. SPECIFIC EMBODIMENT
[0014] As Figure 1 -2 shows, a kind of novel workbench structure for train wheel processing, including three -jaw self -centering chuck 1, crossed roller bearing 2, gear ring 3, gear 4, transmission shaft 5, shift fork 6, oil cylinder 7, clamping oil cylinder 8 and lock rod 9, the three -jaw self -centering chuck 1 is installed on machine tool workbench table top, at the position corresponding three -jaw self -centering chuck 1, a crossed roller bearing 2 is installed in workbench base, a gear ring 3 is installed outside crossed roller bearing 2, the center of three three -jaw self -centering chuck 1, crossed roller bearing 2 and gear ring 3 is located same axis.
[0015] In the side of gear ring 3, several vertical transmission shafts 5 are installed in workbench base, several gears 4 that are mutually engaged are installed on transmission shaft 5, gear ring 3 is meshed with adjacent gear 4 and is connected;On the side of three -jaw self -centering chuck 1, a clamping oil cylinder 8 is installed on workbench and is arranged horizontally;On the side of clamping oil cylinder 8, a vertical oil cylinder 7 is installed in workbench;The piston end of oil cylinder 7 faces down, shift fork 6 is arranged horizontally, and the piston end of oil cylinder 7 and the middle position of shift fork 6 are fixedly connected.
[0016] Between the clamping cylinder 8 and the oil cylinder 7, a vertical locking rod 9 is arranged in the workbench, which is close to the piston rod of the clamping cylinder 8, and the lower end of the locking rod 9 is fixedly connected with one end of the shift fork 6, and the other end of the shift fork 6 is matchedly connected with a vertical guide rod.
[0017] The upper end of the locking rod 9 is provided with a plurality of uniformly spaced insertion slots, and the piston rod of the clamping cylinder 8 can be matched and inserted into the corresponding insertion slot.
[0018] Before the machine tool is ready for machining, the wheel is clamped on the three-jaw self-centering chuck 1, and the cross roller bearing 2 is arranged below the three-jaw self-centering chuck 1. The cross roller bearing 2 adopts rolling support, which can bear greater axial and radial load compared with the combined bearing, and has compact internal structure, large contact area between rollers, high stiffness support, no sliding friction during operation, and can ensure high precision and stability. Then the servo motor drives the 4-tooth gear, the gear ring 3 and the cross roller bearing 2 through the transmission shaft 5 to make the three-jaw self-centering chuck 1 rotate, and the wheel is machined. When rough and fine machining needs to be converted, the machine tool stops, the hydraulic system supplies oil to drive the shift fork 6 and the guide rod through the oil cylinder 7 to shift gears, and when the shift fork 6 is in place, the clamping cylinder 8 is used to clamp, and then other rotating speeds are used to machine the wheel.
[0019] When the machine tool needs to shift gears, the hydraulic station supplies oil, first makes the oil cylinder 7 move, drives the shift fork 6 upward or downward, and the locking rod 9 will be synchronized upward or downward. When the shift fork 6 reaches the specified stroke, the switch will send a signal, and the hydraulic station will supply oil to the clamping cylinder 8, so that the piston rod in the clamping cylinder 8 extends to clamp the locking rod 9.
Claims
1. A new type of work table structure for train wheel machining, characterized in that: The utility model relates to a three-jaw self-centering chuck (1), a cross roller bearing (2), a gear ring (3), a gear (4), a transmission shaft (5), a shift fork (6), an oil cylinder (7), a clamping oil cylinder (8) and a lock rod (9), the three-jaw self-centering chuck (1) is installed on the machine tool workbench table top, a cross roller bearing (2) is installed in the workbench base at the position corresponding to the three-jaw self-centering chuck (1), a gear ring (3) is installed outside the cross roller bearing (2), the centers of the three-jaw self-centering chuck (1), the cross roller bearing (2) and the gear ring (3) are located on the same axis; On one side of the gear ring (3), a plurality of vertical transmission shafts (5) are installed in the workbench base, a plurality of gears (4) are installed on the transmission shaft (5) and are mutually engaged with each other, the gear ring (3) is engaged with the adjacent gear (4); on one side of the three-jaw self-centering chuck (1), a clamping oil cylinder (8) is installed on the workbench and is arranged horizontally; on one side of the clamping oil cylinder (8), an oil cylinder (7) is installed in the workbench and is arranged vertically; the piston end of the oil cylinder (7) faces downward, the shift fork (6) is arranged horizontally, the shift fork (6) and the piston end of the oil cylinder (7) are located in the workbench base, and the piston end of the oil cylinder (7) is fixedly connected to the middle position of the shift fork (6); Between the clamping oil cylinder (8) and the oil cylinder (7), a lock rod (9) is arranged in the workbench and is arranged vertically, the lock rod (9) is close to the piston rod of the clamping oil cylinder (8), the lower end of the lock rod (9) is fixedly connected to one end of the shift fork (6), and the other end of the shift fork (6) is fixedly connected to a vertical guide rod.
2. A novel work table structure for train wheel machining as claimed in claim 1, wherein: The upper end of the lock rod (9) is provided with a plurality of evenly spaced insertion grooves, and the piston rod of the clamping oil cylinder (8) can be inserted into the corresponding insertion groove.