New energy automobile battery tray milling equipment
Through the coordinated design of the flipping mechanism and the fixing mechanism, the pallet can be flipped in situ, which solves the problems of increased costs and safety hazards of the traditional flipping method, improves processing accuracy and efficiency, and reduces energy consumption.
Patent Information
- Application Number
- CN202511103437.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2025-10-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When processing traditional new energy vehicle battery trays, the flipping method requires a powerful lifting drive mechanism, which increases equipment costs and space requirements. In addition, the accuracy of repeated positioning after flipping is difficult to guarantee, resulting in high energy consumption and safety hazards.
The coordinated design of the flipping mechanism and the fixing mechanism enables the pallet to flip 180 degrees in situ. The flipping action is completed by horizontally moving the flipping mechanism, eliminating the need to lift the platform or pallet.
It reduces equipment manufacturing costs and space requirements, ensures processing accuracy, improves production efficiency, reduces energy consumption and eliminates safety hazards. It is suitable for high-precision processing of large workpieces.
Smart Images
Figure CN120791007A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to battery tray milling technology, in particular to a new energy vehicle battery tray milling equipment. BACKGROUND
[0002] The new energy vehicle battery tray is a large thin-walled structure, and needs to be turned over by 180 degrees when double-sided processing. The traditional turning method usually relies on the descent of the carrier or the lifting of the tray to avoid the turning space, which requires a powerful lifting drive mechanism (such as a large hydraulic cylinder or a high-power screw) to significantly increase the manufacturing cost and overall height of the equipment, and requires a strict space in the workshop; and the tray needs to be accurately lowered back to the original processing position after turning, which is time-consuming and difficult to ensure the accuracy of repeated positioning, which may cause position and parallelism errors in double-sided processing, and the repositioning process further reduces the efficiency; in addition, the frequent lifting of large trays (especially new energy vehicle battery trays with large size and high weight) consumes a lot of energy, and there are stability and safety hazards such as workpiece shaking or accidental falling, which restricts the processing safety and energy efficiency. SUMMARY
[0003] The purpose of the present application is to provide a new energy vehicle battery tray milling equipment to solve the above problems in the prior art.
[0004] In order to achieve the above purpose, the present application provides the following technical scheme: a new energy vehicle battery tray milling equipment, comprising a lathe base and a milling mechanism, the lathe base is fixedly installed with a carrier, the carrier is installed with a fixing mechanism on the side, the fixing mechanism is used for fixing the tray on the carrier, the lathe base is also provided with a turning mechanism, the turning mechanism can move in the horizontal direction, the fixing mechanism can move downward to the carrier, when turning, the fixing mechanism moves to the outside of the moving path of the turning mechanism, the turning mechanism moves to the tray direction and turns the tray by 180 degrees, and moves away from the tray after turning, the fixing mechanism moves to the original position to fix the turned tray, and the milling mechanism mills the other side of the tray.
[0005] Further, the turning mechanism comprises two symmetrically distributed turning parts and a driving part for driving the two turning parts to approach or move away from each other, the turning part comprises a first moving platform, the side close to the carrier of the first moving platform is provided with a first support, the first support is installed with a clamp, and the first support is connected with a rotating part for driving the rotation thereof.
[0006] Further, the rotating piece comprises a first rotating shaft fixedly connected to the middle part of the first support, the first rotating shaft is rotationally connected with an oscillating rod, one end of the oscillating rod is rotationally connected with one side of the first moving platform, the end of the oscillating rod away from the first rotating shaft is provided with an avoiding slot, the end of the first support away from the oscillating rod is fixedly connected with a second rotating shaft, one end of the second rotating shaft is rotationally connected with a sliding block, one side of the first moving platform is provided with a sliding groove for the sliding block to move.
[0007] Further, the sliding groove is arranged along the horizontal direction, the second rotating shaft is fixedly connected with a first sprocket, the first moving platform is further rotationally connected with a third rotating shaft and a fourth rotating shaft, the third rotating shaft and the fourth rotating shaft are respectively arranged below the two ends of the sliding groove, the third rotating shaft and the fourth rotating shaft are fixedly connected with a second sprocket and a third sprocket, the third sprocket and the fourth sprocket are drivingly connected through a transmission chain, the first sprocket is meshingly connected with the transmission chain, and one end of the third rotating shaft or the fourth rotating shaft is connected with a motor.
[0008] Further, the driving piece comprises horizontal rails and horizontal sliding tables arranged below the two ends of the first moving platform, the horizontal rails are installed on the support base, the horizontal sliding tables are slidingly connected with the horizontal rails, the first moving platform is fixedly connected with the two horizontal sliding tables below, and the support base is installed with an A driving piece for driving the first moving platform to move.
[0009] Further, the fixing mechanism comprises a fixing platform, a plurality of pressing and clamping assemblies are arranged on the fixing platform, and the pressing and clamping assemblies are used for fixing and clamping the tray on the loading platform and the fixing platform.
[0010] Further, the fixing platform is connected with a moving piece for driving the fixing platform to move between a first position and a second position, in the first position, the fixing platform is flush with the loading platform, and in the second position, the fixing platform is located outside the moving path of the overturning mechanism.
[0011] Further, the moving piece comprises longitudinal rails and longitudinal sliding tables, the longitudinal sliding tables are slidingly connected with the longitudinal rails, the top of the longitudinal sliding table is fixedly connected with the bottom of the fixing platform, and the bottom of the longitudinal sliding table is connected with a B driving piece.
[0012] Further, the moving piece comprises a rotating shaft, and the fixing mechanism is connected with a C driving piece for driving the fixing mechanism to rotate around the rotating shaft.
[0013] Compared with the prior art, the new energy automobile battery tray milling equipment provided by the application has the following beneficial effects:
[0014] Through the collaborative design of the overturning mechanism and the fixing mechanism, the tray is overturned in situ, that is, after the fixing mechanism moves horizontally out of the overturning path, the overturning mechanism moves horizontally to the two sides of the tray, and the tray is overturned by 180° in the machining plane driven by the rotating piece and the clamp, without the need for lifting the platform or the tray throughout the process; not only the traditional lifting mechanism (such as a hydraulic cylinder / screw rod) is saved, but also the manufacturing cost, the overall height and the workshop space requirement of the equipment are significantly reduced; moreover, since the tray does not need to leave the machining position throughout the process, the machining reference consistency is maintained, the reset error is reduced, and thus the high precision (such as parallelism and position) of double-sided machining is ensured.
[0015] At the same time, the lifting step is saved, the overturning process is efficient and coherent, the non-cutting time is greatly shortened, the production efficiency is improved, the vertical displacement of large workpieces is avoided, the energy consumption is effectively reduced, and the safety hazards such as shaking and falling are eliminated, and the high-precision machining scene of large workpieces such as new energy automobile battery trays is particularly suitable. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.
[0017] Figure 1 The overall structure schematic diagram provided for the embodiments of the present application;
[0018] Figure 2 The front view provided for the embodiments of the present application; Figure 1
[0019] Figure 3 The structure schematic diagram of the moving piece in the embodiments of the present application adopts a rotating shaft mode; Figure 1
[0020] Figure 4 The structure schematic diagram of the overturning mechanism provided for the embodiments of the present application;
[0021] Figure 5 The process (arrow direction) schematic diagram of the first support overturning by 180° provided for the embodiments of the present application;
[0022] Figure 6 The local structure schematic diagram of the first support when overturning provided for the embodiments of the present application.
[0023] Explanation of reference signs:
[0024] 1, lathe base; 2, carrier; 3, fixing mechanism; 31, clamping assembly; 311, pressure head; 312, actuator; 32, fixed platform; 33, moving piece; 331, longitudinal rail; 332, longitudinal sliding table; 333, rotating shaft; 4, tray; 5, turnover mechanism; 51, turnover piece; 511, first moving platform; 512, first support; 52, driving piece; 521, horizontal rail; 522, horizontal sliding table; 523, support seat; 53, clamp; 54, rotating piece; 5401, first rotating shaft; 5402, swing rod; 5403, avoiding groove; 5404, second rotating shaft; 5405, sliding block; 5406, sliding groove; 5407, first sprocket; 5408, third rotating shaft; 5409, fourth rotating shaft; 5410, second sprocket; 5411, third sprocket; 5412, transmission chain; 5413, motor. DETAILED DESCRIPTION
[0025] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.
[0026] Embodiment:
[0027] Please refer to Figure 1 - Figure 6 A new energy automobile battery tray milling equipment, comprising a lathe base and a milling mechanism, the lathe base is fixedly installed with a carrier, the carrier is installed with a fixing mechanism on the side, the fixing mechanism is used for fixing the tray on the carrier, the lathe base is also provided with a turnover mechanism, the turnover mechanism can move in the horizontal direction, the fixing mechanism can move to the lower side of the carrier, when turning over, the fixing mechanism moves to the outside of the moving path of the turnover mechanism, the turnover mechanism moves to the tray direction and turns over the tray by 180°, and moves away from the tray after turning over, the fixing mechanism moves to the original position to fix the turned over tray, and the milling mechanism mills the other side of the tray.
[0028] It should be noted that the milling mechanism is not shown in the figure, it adopts a mature and commonly used numerical control milling system in the prior art, such system is usually controlled by a numerical control system, drives the main shaft to drive the milling cutter to rotate at high speed for cutting, the commonly used structure form includes a three-axis numerical control milling unit, which has the ability to move in X (left and right), Y (forward and backward) and Z (up and down) three directions, can complete the milling of plane, contour, cavity and other complex shapes, the cutter usually adopts a hard alloy end mill (such as an end mill, a vertical milling cutter) for plane milling (face milling), contour milling and cavity processing, and the specific processing scene of the tray will not be described.
[0029] In one embodiment of the present application, the turnover mechanism comprises two symmetrically distributed turnover members and a driving member for driving the two turnover members to move closer to or away from each other, the turnover member comprises a first moving platform, a first support is arranged on one side of the first moving platform close to the loading platform, a clamp is mounted on the first support, and the first support is connected with a rotating member for driving the rotation thereof.
[0030] In one embodiment of the present application, the rotating member comprises a first rotating shaft, the first rotating shaft is fixedly connected with the middle part of the first support, the first rotating shaft is rotationally connected with an oscillating rod, one end of the oscillating rod is rotationally connected with one side of the first moving platform, the end of the oscillating rod away from the first rotating shaft is provided with an avoiding groove, the end of the first support away from the oscillating rod is fixedly connected with a second rotating shaft, one end of the second rotating shaft is rotationally connected with a sliding block, and one side of the first moving platform is provided with a sliding groove for the movement of the sliding block.
[0031] As shown in Figure 4 , the sliding groove is arranged along the horizontal direction, the second rotating shaft is fixedly connected with a first sprocket, the first moving platform is further rotationally connected with a third rotating shaft and a fourth rotating shaft, the third rotating shaft and the fourth rotating shaft are respectively arranged below both ends of the sliding groove, the third rotating shaft and the fourth rotating shaft are fixedly connected with a second sprocket and a third sprocket, the third sprocket and the fourth sprocket are drivingly connected through a transmission chain, the first sprocket is meshingly connected with the transmission chain, and one end of the third rotating shaft or the fourth rotating shaft is connected with a motor.
[0032] In one embodiment of the present application, the same third rotating shaft or fourth rotating shaft on the two first moving platforms can also be connected through the same motor, for example, the two third rotating shafts are connected through a common shaft, so that the two third rotating shafts can be synchronously driven by the motor, thereby synchronously driving the two first supports to rotate through the two rotating members on the two sides.
[0033] It should be noted that the clamp is a general pneumatic or hydraulic clamp, which is a prior art and will not be described in detail here.
[0034] The motor drives the transmission chain to rotate, so that the first sprocket on the transmission chain moves and rotates. Specifically, when the transmission chain moves, the first sprocket will be driven by the transmission chain in the meshing state. At this time, the sliding block moves in the sliding groove, limits the position of the second rotating shaft, and makes the first sprocket always keep the meshing state with the transmission chain. The first sprocket will also rotate synchronously around the central axis of the second rotating shaft. Under the movement and rotation of the second rotating shaft, the first support will rotate. Under the constraint of the oscillating rod, the first support will present the movement of one end along the direction of the sliding groove, the rotation around the central axis of the synchronously moving second rotating shaft, and the turnover under the constraint of the first rotating shaft (the first rotating shaft can rotate around the rotating connection between the first rotating shaft and the first moving platform under the constraint of the oscillating rod). The specific turnover process is shown in Figure 5As shown in the flipping process diagram shown in , it should be noted that when the second rotating shaft is located at one end close to the swing arm, the second rotating shaft enters the avoidance groove on the swing arm to avoid obstructing the flipping of the first support. When it is necessary to flip again, just click to drive the transmission chain to reverse.
[0035] like Figure 5 As shown, when the pallet is flipped after milling on one side, it can be flipped in the original position. Compared with the existing flipping methods, such as driving the platform down to avoid, or first moving the pallet upward until it is not blocked by the platform during flipping, the pallet needs to move vertically away from the original processing position during the flipping process. This displacement will bring the following significant problems:
[0036] The lifting of the pallet or platform requires an additional powerful lifting drive mechanism (such as a large hydraulic cylinder or a high-power screw), which not only increases the manufacturing cost of the equipment, but also significantly increases the overall height of the equipment and requires higher workshop space.
[0037] After lifting and flipping, the pallet must be precisely lowered back to its original machining position before milling the other side. This lifting and repositioning process is time-consuming. More importantly, repeatable positioning accuracy is difficult to guarantee. Any slight deviation will directly affect the overall accuracy of double-sided machining (such as parallelism and position). The realignment process can also be time-consuming and labor-intensive.
[0038] Lifting large pallets (especially those for new energy vehicle batteries, which are typically large and heavy) consumes a significant amount of energy. Furthermore, lifting large workpieces poses certain stability and safety risks (such as accidental falls or shaking).
[0039] In contrast, the flipping mechanism used in the present invention achieves a 180° flip of the pallet from its original processing position through a sophisticated design of connecting rods, slides, chain transmission, and avoidance grooves. Its core advantages are:
[0040] The fixing mechanism only needs to be moved horizontally (without raising or lowering the platform or the pallet). Once the flip mechanism is in place, the flipping action can be performed directly on the same horizontal plane as the pallet. This completely eliminates the need for a large and expensive lifting mechanism, significantly reducing the overall height and structural complexity of the equipment, and requiring less workshop space.
[0041] Since the tray is always kept in the original machining position (only in-plane rotation) during the whole overturning process, after the overturning is completed, the fixing mechanism is horizontally moved back to the original position for clamping. This maximizes the consistency of the tray position before and after overturning, eliminates the positioning error caused by lifting and resetting, and keeps the machining reference, thereby greatly guaranteeing the machining precision of double-sided milling (such as the parallelism of two sides and the relative position accuracy of hole sites / profiles).
[0042] The time for lifting and resetting is saved, the overturning action itself is realized through an optimized mechanical structure, the overall overturning process is more rapid and efficient, the non-cutting time is shortened, and the production efficiency of the equipment is improved.
[0043] The frequent lifting of large workpieces is avoided, the energy consumption of the equipment during operation is significantly reduced, and the potential safety risks caused by the movement of the workpiece are also reduced, and the operation is safer and more reliable.
[0044] The action process is clear, the actions of various mechanisms are coordinated, the mechanical structure is reliable, and the control logic is relatively simple.
[0045] In general, the core effect of the overturning mechanism of the present application is to realize the in-situ overturning of large battery trays, abandon the traditional lifting avoidance mode, and thus significantly improve the space occupation, manufacturing cost, machining precision, operation efficiency and safety, and is especially suitable for the machining scene of large workpieces such as new energy automobile battery trays.
[0046] In an embodiment of the present application, the driving member includes a horizontal rail and a horizontal sliding table arranged below both ends of the first moving platform, the horizontal rail is installed on the support seat, the horizontal sliding table is in sliding connection with the horizontal rail, the first moving platform is fixedly connected with the two horizontal sliding tables below, and the support seat is installed with an A driving member for driving the first moving platform to move;
[0047] In an embodiment of the present application, the A driving member is a gas cylinder or a hydraulic cylinder or an electric telescopic rod, the cylinder body of the gas cylinder or the hydraulic cylinder or the cylinder body of the electric telescopic rod is installed on the support seat through a connecting seat, and the piston rod of the gas cylinder or the hydraulic cylinder or the telescopic rod of the electric telescopic rod is connected with the first moving platform, as shown in Figure 2 The two first moving platforms are driven to move along the horizontal rail, the overturning members on the two first moving platforms are moved close to or away from each other, the tray is clamped after the two first moving platforms are moved close to each other to a specified position, and finally the tray is overturned by the rotating member.
[0048] In an embodiment of the present application, the fixing mechanism includes a fixed platform, a plurality of pressing and clamping assemblies are arranged on the fixed platform, and the pressing and clamping assemblies are used for fixing and clamping the tray on the loading table and the fixed platform.
[0049] In one embodiment of the present invention, the clamping assembly includes a pressure head and an actuator. The actuator is pneumatic or hydraulic, and the pallet is clamped, fixed and released by driving the pressure head to rotate. This is existing technology and will not be described in detail here.
[0050] In one embodiment of the present invention, the fixed platform is connected to a movable member for driving it to move between a first position and a second position. In the first position, the fixed platform is flush with the carrier. In the second position, the fixed platform is outside the moving path of the flipping mechanism, thereby not hindering the movement of the flipping mechanism.
[0051] In one embodiment of the present invention, a method for moving a fixed platform is provided, such as Figure 2 As shown, the fixing mechanism moves in the vertical direction, and the moving part includes a longitudinal track and a longitudinal slide. The longitudinal slide is slidably connected to the longitudinal track, the top of the longitudinal slide is fixedly connected to the bottom of the fixed platform, and the bottom of the longitudinal slide is connected to a driving member B;
[0052] In one embodiment of the present invention, the B driving member includes a pneumatic cylinder or a hydraulic cylinder or an electric telescopic rod, the cylinder body of the pneumatic cylinder or the cylinder body of the hydraulic cylinder or the cylinder body of the electric telescopic rod is connected to the lathe base, the piston rod of the pneumatic cylinder or the piston rod of the hydraulic cylinder or the telescopic rod of the electric telescopic rod is connected to the longitudinal slide, and the fixed platform and the clamping assembly thereon are driven to move between the first position and the second position. In order to maintain the stability of the movement of the fixed platform, two groups of longitudinal tracks and longitudinal slides can be set under the same fixed platform.
[0053] In one embodiment of the present invention, another method of moving the fixed platform is provided, such as Figure 3 As shown, the fixing mechanism rotates around the rotating shaft, the rotating shaft is set on the lathe base, one end of the fixed platform is rotatably connected to the rotating shaft, and one side of the fixed platform is connected to the C driving member for driving its rotation;
[0054] In one embodiment of the present invention, the C drive member includes a pneumatic cylinder, a hydraulic cylinder, or an electric telescopic rod, the cylinder body of the pneumatic cylinder, the cylinder body of the hydraulic cylinder, or the cylinder body of the electric telescopic rod is rotatably connected to the lathe base, and the piston rod of the pneumatic cylinder, the piston rod of the hydraulic cylinder, or the telescopic rod of the electric telescopic rod is rotatably connected to the fixed platform, and the clamping assembly thereon is driven to move between the first position and the second position by driving the fixed platform to rotate around the rotation axis.
[0055] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the present invention.
Claims
1. A milling device for a new energy vehicle battery tray (4), comprising a lathe base (1) and a milling mechanism, characterized in that: A platform (2) is fixedly mounted on the lathe base (1), and a fixing mechanism (3) is installed on the peripheral side of the platform (2). The fixing mechanism (3) is used to fix the pallet (4) on the platform (2). A flipping mechanism (5) is also provided on the lathe base (1). The flipping mechanism (5) can move in the horizontal direction, and the fixing mechanism (3) can move below the platform (2). When flipping, the fixing mechanism (3) moves outside the moving path of the flipping mechanism (5), and the flipping mechanism (5) moves toward the pallet (4) and flips the pallet (4) 180 degrees, and moves away from the pallet (4) after flipping. The fixing mechanism (3) moves to the original position to fix the flipped pallet (4), and the milling mechanism mills the other side of the pallet (4).
2. A milling device for a new energy vehicle battery tray (4) according to claim 1, characterized in that: The flipping mechanism (5) comprises two symmetrically distributed flipping members (51) and a driving member (52) for driving the two flipping members (51) to move closer to or away from each other, wherein the flipping member (51) comprises a first movable platform (511), a first support (512) is provided on a side of the first movable platform (511) close to the carrier (2), a clamp (53) is mounted on the first support (512), and the first support (512) is connected to a rotating member (54) for driving the first support (512) to rotate.
3. A milling device for a new energy vehicle battery tray (4) according to claim 2, characterized in that: The rotating member (54) includes a first rotating shaft (5401), the first rotating shaft (5401) is fixedly connected to the middle part of the first support (512), the first rotating shaft (5401) is rotatably connected to a swing rod (5402), one end of the swing rod (5402) is rotatably connected to one side of the first movable platform, and an avoidance groove (5403) is provided at one end of the swing rod (5402) away from the first rotating shaft (5401), the first support (512) is fixedly connected to a second rotating shaft (5404) at one end of the second rotating shaft (5404) is rotatably connected to a slider (5405), and a sliding groove (5406) for the slider (5405) to move is provided on one side of the first movable platform (511).
4. A milling device for a new energy vehicle battery tray (4) according to claim 3, characterized in that: The slide groove (5406) is arranged in the horizontal direction, and the first sprocket (5407) is fixedly connected to the second rotating shaft (5404). The first movable platform (511) is also rotatably connected to the third rotating shaft (5408) and the fourth rotating shaft (5409). The third rotating shaft (5408) and the fourth rotating shaft (5409) are respectively located below the two ends of the slide groove (5406). The third rotating shaft (5408) and the fourth rotating shaft (5409) are fixedly connected to the second sprocket (5410) and the third sprocket (5411). The third sprocket (5411) and the fourth sprocket are connected by a transmission chain (5412). The first sprocket (5407) is meshed with the transmission chain (5412). One end of the third rotating shaft (5408) or the fourth rotating shaft (5409) is connected to the motor (5413).
5. A milling device for a new energy vehicle battery tray (4) according to claim 2, characterized in that: The driving member (52) includes a horizontal rail (521) and a horizontal slide (522) arranged below the two ends of the first mobile platform (511); the horizontal rail (521) is installed on a support seat (523); the horizontal slide (522) is slidably connected to the horizontal rail (521); the first mobile platform (511) is fixedly connected to the two horizontal slides (522) below it; and a driving member A (52) for driving the first mobile platform (511) to move is installed on the support seat (523).
6. A milling device for a new energy vehicle battery tray (4) according to claim 1, characterized in that: The fixing mechanism (3) comprises a fixing platform (32), and a plurality of clamping assemblies (31) are provided on the fixing platform (32). The clamping assemblies (31) are used to fix the tray (4) on the carrier (2) and the fixing platform (32).
7. A milling device for a new energy vehicle battery tray (4) according to claim 6, characterized in that: The fixed platform (32) is connected to a moving member (33) for driving the fixed platform (32) to move between a first position and a second position. In the first position, the fixed platform (32) is flush with the carrier (2). In the second position, the fixed platform (32) is outside the moving path of the flip mechanism (5).
8. A milling device for a new energy vehicle battery tray (4) according to claim 7, characterized in that: The moving member (33) includes a longitudinal track (331) and a longitudinal slide (332). The longitudinal slide (332) is slidably connected to the longitudinal track (331). The top of the longitudinal slide (332) is fixedly connected to the bottom of the fixed platform (32). The bottom of the longitudinal slide (332) is connected to a B driving member (52).
9. A milling device for a new energy vehicle battery tray (4) according to claim 7, characterized in that: The moving member (33) includes a rotating shaft (333), and the fixing mechanism (3) is connected to a C driving member (52) for driving the moving member (33) to rotate around the rotating shaft (333).