Propeller positioner system
Through the propeller displacement machine system, the main motor drive and support device are used to achieve stable rotation and high-precision grinding of the propeller, which solves the problems of unstable rotation and support of the propeller, and achieves high-precision surface treatment and static balance tests.
Patent Information
- Application Number
- CN202422008797.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The prior art cannot effectively ensure the stable rotation and surface grinding accuracy of marine propellers, and it is difficult to support propellers with larger weights for static balance tests.
The propeller displacement machine system is adopted, including the active bed of the transformer, the main motor, the active feed box, the chuck mechanism, the support device, the tightening protection device, the auxiliary tightening bed guide rail and the fixed mandrel shaft. The propeller is driven to rotate stably through the main motor, and the support device and the chuck mechanism are used to accurately core and support to achieve high-precision polishing of the propeller.
The stable rotation and high-precision grinding of the propeller are achieved, and can support the propeller with a larger weight, ensure surface roughness and static balance tests.
Smart Images
Figure CN223114835U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a propeller positioner system, belonging to the technical field of machinery. Background Art
[0002] Since the surface of a marine propeller is full of tool marks after machining, in order to ensure the surface roughness of the marine propeller, it is necessary to polish the surface of the marine propeller. The existing surface polishing of marine propellers is to support the marine propeller with two roller stands, and manually drive the rollers to drive the marine propeller to rotate. During the rotation of the marine propeller, a polishing device is used to polish the surface of the marine propeller. In this way, the stable rotation of the marine propeller cannot be guaranteed, so that the polishing accuracy of the surface of the marine propeller cannot be guaranteed. Due to the large weight of the marine propeller, the support is difficult, and there is no device that can stably drive the marine propeller to rotate, nor can a static balance test be carried out on the marine propeller. Summary of the Utility Model
[0003] In order to overcome the deficiencies of the prior art, the utility model provides a propeller positioner system, which can quickly center the large aperture of the marine propeller with high precision, can drive the marine propeller to rotate stably, and effectively ensure the surface roughness of the marine propeller.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a propeller positioner system, including a positioner active bed, a main motor, an active feed box, a chuck mechanism, a support device, a top protection device, an auxiliary top bed guide rail a, an auxiliary top bed guide rail b and a centering shaft. A main motor and an active feed box are installed on the positioner active bed. The main motor is located on one side of the active feed box, and the driving end of the main motor is connected to the active feed box. A chuck mechanism is installed at the output end of the active feed box. The chuck mechanism is a clamping structure of a four-jaw chuck; at one end far from the main motor, an auxiliary top bed guide rail a is fixed on this side of the positioner active bed, and a support device is installed on the auxiliary top bed guide rail a; on the other side of the auxiliary top bed guide rail a, there is an auxiliary top bed guide rail b, and the auxiliary top bed guide rail b is spaced from the auxiliary top bed guide rail a. A support device is also installed on the auxiliary top bed guide rail b. On one side of the support device, a top protection device is installed on the auxiliary top bed guide rail b; a horizontal centering shaft is provided between the top protection device and the chuck mechanism.
[0005] One end of the main shaft in the active feed box is provided with a center pin, and the chuck mechanism is fixed at the front end of the main shaft of the active feed box; one end of the top protection device is also provided with a center pin, and the two center pins are opposite and located on the same straight line, and the two center pins respectively abut against the centers of both ends of the centering shaft.
[0006] A fixed button station is provided near the chuck mechanism of the active feed box. Above the button station, a dial gauge holder capable of rotating an angle is fixed. A spindle speed meter, an ammeter, a speed change indicator light, and a lubrication signal light are installed on the dial gauge holder.
[0007] An oil temperature control fuel tank is provided on the active feed box, and the flow relay is installed in front of the oil distributor; a spindle bearing temperature rise measuring device is installed at the spindle bearing in the active feed box.
[0008] The beneficial effects of the present utility model are as follows: The present utility model can quickly center the large aperture of the marine propeller with high precision, can drive the marine propeller to rotate stably, effectively support the relatively heavy marine propeller, and effectively ensure the surface roughness of the marine propeller in sequence, improving the surface precision; at the same time, it can conduct static balance tests on disc parts such as marine propellers. Description of the Drawings
[0009] The present utility model will be further described below in conjunction with the drawings and specific embodiments.
[0010] Figure 1 is a schematic structural view of the present utility model.
[0011] Figure 2 is a schematic view of the present utility model when clamping the propeller.
[0012] Figure 3 is a schematic view of the present utility model clamping the propeller on the foundation.
[0013] Figure 4 is Figure 3 the front view of
[0014] Figure 5 is Figure 4 the top view of
[0015] Reference numerals in the drawings:
[0016] 1. Active bed of the positioner, 2. Main motor, 3. Active feed box, 4. Chuck mechanism, 5. Support device, 6. Tightening protection device, 7. Auxiliary tightening bed guide rail a, 8. Auxiliary tightening bed guide rail b, 9. Foundation, 10. Marine propeller, 11. Centering shaft. Specific Embodiments
[0017] As Figure 1As shown in Fig. 5, a propeller position-changing machine system includes a position-changing machine active bed 1, a main motor 2, an active feed box 3, a chuck mechanism 4, a support device 5, a top-tightening protection device 6, an auxiliary top-tightening bed guide rail a7, an auxiliary top-tightening bed guide rail b8, and a centering shaft 11. A main motor 2 and an active feed box 3 are installed on the position-changing machine active bed 1. The main motor 2 is located on one side of the active feed box 3, and the driving end of the main motor 2 is connected to the active feed box 3. A chuck mechanism 4 is installed at the output end of the active feed box 3. The chuck mechanism 4 is a clamping structure of a four-jaw chuck; at one end far from the main motor 2, an auxiliary top-tightening bed guide rail a7 is fixed on this side of the position-changing machine active bed 1, and a support device 5 is installed on the auxiliary top-tightening bed guide rail a7; on the other side of the auxiliary top-tightening bed guide rail a7, there is an auxiliary top-tightening bed guide rail b8. The auxiliary top-tightening bed guide rail b8 is spaced apart from the auxiliary top-tightening bed guide rail a7, and a support device 5 is also installed on the auxiliary top-tightening bed guide rail b8. On one side of the support device 5, a top-tightening protection device 6 is installed on the auxiliary top-tightening bed guide rail b8; there is a horizontal centering shaft 11 between the top-tightening protection device 6 and the chuck mechanism 4.
[0018] One end of the main shaft in the active feed box 3 is provided with a center drill, and the chuck mechanism 4 is fixed at the front end of the main shaft of the active feed box 3; one end of the top-tightening protection device 6 is also provided with a center drill. The two center drills are opposite and located on the same straight line, and the two center drills respectively abut against the centers at both ends of the centering shaft.
[0019] A fixed button station is provided near the chuck mechanism 4 of the active feed box 3, and a rotatable dial is fixed above the button station. A main shaft speedometer, an ammeter, a speed change indicator light, and a lubrication signal light are installed on the dial.
[0020] An oil temperature control oil tank is provided on the active feed box 3, and a flow relay is installed in front of the oil distributor; a main shaft bearing temperature rise measuring device is installed at the main shaft bearing in the active feed box 3.
[0021] The positioner system adopts a horizontal layout and is placed in the foundation 9. The active bed 1 of the positioner is made of high-strength castings and has been fully stress-relieved. The active bed 1 of the positioner is fixed to the foundation 9 through multiple groups of anchor pads, making it an integral whole with the foundation 9. The active feed box 3 is directly connected to the active bed 1 of the positioner. The main shaft in the active feed box 3 is in the form of a box body. The main movement is driven by a main motor 2 with AC frequency conversion. The main motor 2 drives the main shaft to rotate. A four-jaw chuck is fixed at the front end of the main shaft. The main shaft of the active feed box 3 adopts a through-shaft manufacturing process. The main shaft has a short and thick structure, a small length-diameter ratio, good rigidity, small deflection, and large load-bearing capacity. The radial support uses double-row roller bearings with highly precise adjustable radial clearance for centering. Through optimized design, the best support span has been obtained, effectively improving the rotational accuracy of the main shaft. The axial load-bearing uses two groups of high-precision thrust roller bearings, and a preload is applied axially. The gear ring is installed in the middle of the main shaft support. In this way, the main shaft has a good stress state and smooth transmission. Through the above measures, the radial and axial rotational accuracies of the main shaft can be guaranteed to be greatly improved. The tip of the main shaft adopts a short-cone interference flange type center, which is fastened to the front end of the main shaft by screws and an interference cone surface fit. The flange end face is tightly pressed against the front end face of the main shaft, thus ensuring that the center system has high rigidity.
[0022] The rotational power of the positioner system is output from the main shaft in the active feed box 3. It drives the workpiece to rotate synchronously by being tightened by the tightening protection device 6, clamped by the jaws. The rotation of the main shaft can be controlled by CNC instructions to control its forward and reverse rotations and adjust the angle amplitude. At the same time, the chuck mechanism 4 on the main shaft also has a disc brake clamping mechanism. The locking piece is driven by the oil cylinders on both sides of the disc connected to the main shaft to control the locking and loosening after the main shaft rotates to a specified angle. The braking torque is greater than 3000 N·m.
[0023] The main motor 2 and the main transmission mechanism in the active feed box 3 are connected by an elastic coupling. Through mechanical variable-speed gears and helical gear pairs, the power is transmitted to the connecting mechanism, making the connecting mechanism reach the specified torque. All high-precision gears in the main transmission mechanism have been hardened, ground, and subjected to necessary crowning processing, having sufficient transmission strength, accuracy, and motion smoothness.
[0024] The upper part of the clamping and protection device 6 is equipped with a tailstock spindle, a sleeve, a force measuring device, a spindle centerline adjustment structure and a sleeve movement mechanism, and the lower part is equipped with a tailstock movement mechanism, a backstop locking mechanism and a lubrication system; the spindle bearing of the clamping and protection device 6 adopts imported high-precision double-row radial short cylindrical roller bearings with adjustable radial clearance, which are installed in the sleeve. A disc spring for preventing damage to the mechanism due to thermal expansion of the workpiece is installed behind the spindle of the clamping and protection device 6; the force measuring sensor is installed at the tail of the sleeve and is equipped with a digital secondary instrument to display the magnitude of the clamping force. When operating, it first approaches the workpiece quickly and then clamps the workpiece slowly; the spindle tip of the clamping and protection device 6 is a flange-type short taper shank tip, which is fastened to the front end of the spindle by screws and an interference fit of the taper surface. The flange end face is closely pressed against the front end face of the spindle, thus ensuring that the tip system has high rigidity; the movement of the clamping and protection device 6 is driven by a separate motor. When movement is required, the hydraulic system first automatically relaxes the clamping mechanism, and automatically clamps the tailstock body when the tailstock moves to the working position. The clamping and relaxation of the clamping and protection device 6 are realized by disc spring locking and hydraulic relaxation; the tailstock is provided with a cantilever button station for controlling the movement, relaxation, locking, etc. of the tailstock.
[0025] The workpiece static balance support device consists of two sets of front and rear support devices 5, adopting a hydraulic support and hydrostatic roller structure. When installing the workpiece, it can be used as an auxiliary support component. The operation can first place the workpiece on the roller rack, move it up to the spindle center position by machine, and then lower it and maintain the minimum position with the workpiece axis after being signaled by the spindle tip. This can prevent the workpiece from falling off due to improper clamping or other reasons, providing a secondary protection function; when the workpiece needs to perform a static balance experiment, the two sets of roller racks are smoothly lifted by the lower hydraulic cylinder, and the entire weight of the workpiece is borne by the two sets of hydrostatic rollers on it. At this time, the claws and the tip are relaxed to ensure that the workpiece can rotate freely, completing the static balance experiment of a disc component such as the marine propeller 10.
[0026] Both the main feed box 3 and the longitudinal feed of the clamping and protection device 6 are driven by AC servo feed motors. The servo motors adopt semi-closed-loop control. To prevent the backward force generated by the workpiece due to gravity, a gear cutting locking device is also provided at the rear side of the main feed box 3 and the clamping and protection device 6. After the main feed box 3 and the clamping and protection device 6 move to the designated position, the gear cutting device is transversely locked with the rack of the main body 1 of the indexing machine, and then the workpiece is clamped. This can ensure that the left and right two sections of the main body 1 of the indexing machine are rigidly connected to the foundation 9 as a whole and will not have axial movement during the operation of the equipment.
[0027] A fixed button station is provided near the chuck mechanism 4 of the active feed box 3. On the button panel, there are buttons and knobs for controlling the forward and reverse rotation of the main shaft, forward and reverse electric vehicles, stop, and motor speed regulation, etc. Above the button station, a rotatable angle dial gauge holder is fixed, and a main shaft speedometer, ammeter, speed change indicator light, lubrication signal light, etc. are installed on the dial gauge holder. The oil temperature control oil tank provided on the active feed box 3 can automatically control the oil temperature and reduce the thermal deformation of the headstock. The flow relay is installed in front of the oil distributor and is used for monitoring the oil circuit to ensure that the main shaft components and the main transmission mechanism are fully lubricated. A main shaft bearing temperature rise measuring device is installed at the main shaft bearing in the active feed box 3. When the bearing temperature rise is too high, the alarm device will give an alarm to protect the machine tool main shaft system.
[0028] During the use process, in the first step, the centering shaft 11 is fitted and installed in the central hole of the propeller 10 to quickly center the large aperture of the marine propeller 10. Then, adjust the jaws on the chuck mechanism 4 according to the end diameter of the centering shaft 11 on the disc parts such as the marine propeller 10 to be clamped as required. Move the active bed of the positioner 1 to ensure that the distance between the two center points is about 150 mm greater than the length of the centering shaft 11. The support device 5 adjusts the clamping range according to the outer diameter of the centering shaft 11, which is larger than the outer diameter dimension of the shaft end of the centering shaft 11. The traveling crane hoists the centering shaft 11 between the two center points, and slowly moves the centering shaft 11 on the marine propeller 10 so that the center point on one side of the chuck mechanism 4 enters the central hole at one end of the centering shaft 11. The maximum workpiece weight that can be supported between the two center points is 160 t, and the maximum workpiece weight is 160 tons when the two support devices 5 are used simultaneously. The clamping diameter of the chuck mechanism 4 is 100 - 600 mm, and the power of the main motor 2 is 75 kw. Through the tightening button of the tightening protection device 6, the center point extends out of the center point sleeve so that the center point enters the central hole at the other end of the centering shaft 11. According to the weight of the clamped marine propeller 10, adjust the tightening force through the button on the tightening protection device 6 to ensure that the centering shaft 11 is tightened. Use a special wrench to tighten the four jaws on the chuck mechanism 4 to clamp the outer circle at one end of the centering shaft 11, loosen the lifting tool, and click the button to rotate the marine propeller 10 to complete the clamping of the marine propeller 10.
Claims
1. A propeller position-changing machine system, characterized in that: It includes a turntable active bed body (1), a main motor (2), an active feed box (3), a chuck mechanism (4), a support device (5), a clamping protection device (6), an auxiliary clamping bed body guide rail a (7), an auxiliary clamping bed body guide rail b (8) and a centering shaft (11). A main motor (2) and an active feed box (3) are installed on the turntable active bed body (1). The main motor (2) is located on one side of the active feed box (3), and the driving end of the main motor (2) is connected to the active feed box (3). A chuck mechanism (4) is installed at the output end of the active feed box (3); at one end far from the main motor (2), an auxiliary clamping bed body guide rail a (7) is fixed on this side of the turntable active bed body (1), and a support device (5) is installed on the auxiliary clamping bed body guide rail a (7); on the other side of the auxiliary clamping bed body guide rail a (7), there is an auxiliary clamping bed body guide rail b (8). The auxiliary clamping bed body guide rail b (8) is spaced apart from the auxiliary clamping bed body guide rail a (7), and a support device (5) is also installed on the auxiliary clamping bed body guide rail b (8). On one side of this support device (5), a clamping protection device (6) is installed on the auxiliary clamping bed body guide rail b (8); there is a horizontal centering shaft (11) between the clamping protection device (6) and the chuck mechanism (4).
2. The propeller position-changing machine system according to claim 1, characterized in that: The chuck mechanism (4) is a clamping structure of a four-jaw chuck.
3. The propeller position-changing machine system according to claim 1, characterized in that: One end of the main shaft in the active feed box (3) is provided with a center punch, and the chuck mechanism (4) is fixed at the front end of the main shaft of the active feed box (3); one end of the clamping protection device (6) is also provided with a center punch. The two center punches are relatively located on the same straight line, and the two center punches respectively abut against the centers at both ends of the centering shaft.
4. A propeller displacement machine system according to claim 1, characterized in that: A fixed button station is provided near the chuck mechanism (4) on the active feed box (3). Above the button station, a table frame capable of rotating an angle is fixed, and a main shaft speedometer, an ammeter, a speed change indicator light and a lubrication signal light are installed on the table frame.
5. A propeller position-changing machine system according to claim 1, characterized in that: An oil temperature control oil tank is provided on the active feed box (3), and a flow relay is installed in front of the oil distributor; a main shaft bearing temperature rise measuring device is installed at the main shaft bearing in the active feed box (3).