Clamping device for propeller machining equipment

Abstract

The application discloses a clamping device for propeller processing equipment, which comprises a base, a center column, a positioning rod, multiple sets of supporting assemblies and a chuck. The base is provided with a circular seat which is suitable for being driven to rotate. The center column is fixedly installed on the circular seat and cooperates with a hub hole of a propeller hub to preliminarily position the propeller. The positioning rod is fixedly installed on the circular seat. The multiple sets of supporting assemblies are uniformly arranged along the circumferential direction of the base and correspond to the number of propeller blades. Each set of supporting assemblies is provided with a buffer supporting seat which is arranged along the radial direction of the base. The chuck is installed on the circular seat and is suitable for being driven to clamp the propeller hub. The clamping device can quickly position the propeller to be processed.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing equipment technology, specifically to a clamping device for propeller processing equipment. Background Technology

[0002] A propeller is a device that converts rotational power into propulsion by rotating blades in air or water. During the production of propellers, especially marine propellers, due to their high weight, they need to be hoisted and clamped for subsequent processing.

[0003] Patent CN112548583A discloses a marine propeller processing robot and its processing method. The robot lifts the propeller onto a rotary support workbench for positioning and clamping to prevent the propeller from shifting during processing. Then, the surface of the propeller blades is milled.

[0004] While the above process can achieve the hoisting and clamping of the propeller, due to the propeller's high weight, if the propeller cannot be guided during the hoisting process, it may deviate due to slight swaying, thus failing to quickly position it at the preset clamping position. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a clamping device for propeller processing equipment to achieve the effect of rapid positioning of the propeller to be processed.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a clamping device for propeller processing equipment, wherein the propeller includes a hub and a plurality of blades arranged circumferentially on the hub, characterized in that: the clamping device for propeller processing equipment includes:

[0007] A base on which a round seat suitable for being driven to rotate is mounted;

[0008] A central column is fixedly installed on the circular seat. The central column mates with the hub hole of the propeller hub to perform initial positioning of the propeller.

[0009] A positioning rod, which is fixedly installed on the circular seat;

[0010] Multiple sets of support components are evenly arranged along the circumference of the base and correspond to the number of blades. Each set of support components has a buffer support seat arranged radially along the base.

[0011] A chuck, mounted on the circular seat, is adapted to be actuated to clamp the propeller hub; wherein...

[0012] The propeller moves along the axial direction of the central column to a preset height position through the engagement of the hub hole and the central column. At this time, the positioning rod is located between two adjacent blades of the propeller at the preset height position. Then, the circular seat is adapted to be driven to rotate so that the positioning rod contacts the blade on the propeller that is in front of its rotation direction, thereby driving the propeller to rotate until the blade abuts against the buffer support seat of the corresponding support assembly, and then the chuck clamps the hub.

[0013] Furthermore, the upper end of the central column is provided with a conical surface that is smaller at the top and larger at the bottom.

[0014] Furthermore, the base is provided with a rotary drive mechanism suitable for driving the round seat to rotate. The rotary drive mechanism includes a servo motor and a rotating shaft rotatably mounted at the center of the base. The rotating shaft is coaxially and fixedly connected to the round seat. The output end of the servo motor and the rotating shaft are provided with a first gear set.

[0015] Furthermore, the positioning rod has a groove extending vertically, and a sliding rod is installed vertically inside the groove. A slider is vertically slidably mounted on the sliding rod, and a spring is mounted on the sliding rod. The spring is located between the bottom of the groove and the slider. A connecting rod is mounted on the slider, and one end of the connecting rod is provided with a clamping part that cooperates with the positioning rod to clamp and limit the corresponding blade when the propeller reaches a preset height position.

[0016] Furthermore, the clamping part includes a housing mounted on the end of the connecting rod away from the slider, a stepper motor is installed inside the housing, a lead screw is installed at the output end of the stepper motor, the lead screw is rotatably mounted in the housing, and a moving block is threaded onto the lead screw;

[0017] The upper sides of the movable block are provided with protruding ribs extending out of the box base. The box base is provided with a clearance groove. Extension blocks are fixedly installed on the top of the two sets of protruding ribs, and push blocks are installed on the extension blocks.

[0018] Furthermore, the clamping part also includes an intermittent rotation mechanism for driving the extension block to rotate intermittently. The intermittent rotation mechanism includes a drive motor fixedly mounted on the extension block and a rotating rod rotatably mounted on the extension block. The push block is fixedly connected to one end of the rotating rod, and the other end of the rotating rod is fixedly connected to the output end of the drive motor.

[0019] Furthermore, the support assembly includes a hydraulic cylinder mounted on the base, a connecting seat fixedly mounted on the output end of the hydraulic cylinder, a rotating shaft rotatably mounted on the connecting seat, a buffer support fixedly mounted to the rotating shaft, and a torsion spring installed between the buffer support and the connecting seat.

[0020] Furthermore, an elastic rubber pad is provided at the top of the buffer support where it contacts the blade.

[0021] Furthermore, the top of the positioning rod is provided with a hemispherical end, the highest point of which is lower than the highest point of the central column. The hemispherical end is adapted to contact the bottom surface of the corresponding blade during the process of the propeller moving along the axial direction of the central column through the hub hole and the central column, so as to guide the propeller to rotate and descend.

[0022] By adopting the above technical solution, the present invention has the following beneficial effects: The clamping device for propeller processing equipment provided in this application guides and clamps the propeller blades when hoisting the propeller, and rotates the propeller for positioning, thereby achieving the effect of rapid positioning when hoisting the propeller.

[0023] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0024] Figure 1 This is an overall schematic diagram of the clamping device for propeller processing equipment in this application;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 for Figure 1 Another schematic diagram of the overall state;

[0027] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 for Figure 4 A schematic diagram of the overall structure of the middle part;

[0029] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0030] Figure 7 for Figure 1 Enlarged view of point F in the middle;

[0031] The following are the labeling elements in the figure:

[0032] 1. Base;

[0033] 2. Clamping assembly; 21. Buffer support seat; 22. Hydraulic cylinder; 23. Chuck; 24. Hub; 25. Blade; 26. Round seat; 27. Positioning rod; 28. Center column; 29. ​​Hemispherical end; 3. Conical surface;

[0034] 4. Limiting component; 41. Groove; 42. Slide bar; 43. Slider; 44. Connecting rod; 45. Spring; 46. Clamping part; 47. Box base; 48. Moving block; 481. Protrusion; 49. Extension block;

[0035] 5. Push block; 51. Clearance groove; 52. Lead screw; 53. Drive motor. Detailed Implementation

[0036] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0037] Example 1: This example mainly illustrates the basic structure and working principle of the clamping device for propeller processing equipment, specifically:

[0038] like Figure 3 As shown, the propeller includes a hub 24 and multiple blades 25 arranged circumferentially on the hub 24. The blades 25 have a certain slope on the upper and lower surfaces of the hub 24 in the axial direction, and hub holes are provided through the hub 24 in the axial direction.

[0039] To mill the surface of the propeller blades 25, the propeller needs to be clamped and fixed, such as... Figures 1-3 As shown, the clamping device for propeller processing equipment includes a disc-shaped base 1, on which a clamping assembly 2 is provided. The clamping assembly 2 is suitable for clamping the propeller. Specifically:

[0040] The clamping assembly 2 includes a circular seat 26 rotatably mounted on the base 1 and a rotary drive mechanism connected to the circular seat 26 for driving the circular seat 26 to rotate.

[0041] In this embodiment, the rotary drive mechanism includes a servo motor (not shown in the figure) and a rotating shaft rotatably mounted at the center of the base 1. The rotating shaft is coaxially and fixedly connected to the round seat 26. The output end of the servo motor and the rotating shaft are provided with a first gear set (not shown in the figure) to drive the rotating shaft to rotate through the first gear set, thereby driving the round seat 26 to rotate.

[0042] Meanwhile, a central column 28 is fixedly installed at the center of the circular base 26. The central column 28 is adapted to the hub hole on the propeller hub 24, that is, the central column 28 is suitable to pass through the hub hole on the hub 24. When the propeller to be milled needs to be clamped, the propeller can be hoisted to the top of the base 1 by the hoisting equipment, so that the hub hole on the hub 24 and the central column 28 are placed coaxially. Then the propeller is moved down by the hoisting equipment, so that the central column 28 passes through the hub hole on the hub 24 to perform preliminary positioning of the propeller.

[0043] Specifically, such as Figure 1As shown, a conical surface 3 with a smaller top and a larger bottom can be provided at the upper end of the central column 28. When the central column 28 passes through the hub hole on the propeller hub 24, the hub hole of the propeller hub 24 can be gradually guided under the action of the conical surface 3, so that the central column 28 can smoothly enter the hub hole of the propeller hub 24.

[0044] Specifically, a positioning rod 27 is provided at a position away from the center of the circular base 26. The upper end of the positioning rod 27 has a hemispherical end 29, and the highest point of the hemispherical end 29 is lower than the highest point of the central column 28. In this embodiment, during the downward movement of the propeller along the central column 28, initially, because the position of the blade 25 on the circumference of the circular base 26 is uncertain, the bottom surface of the blade 25 may contact the hemispherical end 29 of the positioning rod 27. Since the bottom surface of the blade 25 has a certain slope (e.g., Figure 3 As shown, the bottom slope of the blade 25 gradually slopes downwards in a clockwise direction. The positioning rod 27 will push the blade 25 to rotate clockwise around the axis of the central column 28 until the blade 25 passes the positioning rod 27 in the circumferential direction. At this time, the positioning rod 27 is located between two adjacent blades 25, and the propeller can move vertically downwards without resistance until the propeller descends to the preset height position. At this time, the upper end of the positioning rod 27 is higher than the highest point of the blade 25, and the positioning rod 27 is located between the two sets of blades 25. Of course, the position of the propeller can also be adjusted when hoisting the propeller so that the positioning rod 27 is exactly between the two blades 25 in the circumferential direction. Thus, during the descent of the propeller, the blades 25 do not contact the positioning rod 27 and directly reach the preset height position.

[0045] like Figure 1 and Figure 7 As shown, in order to support and position the propeller blades 25, multiple sets of support components are detachably installed on the base 1. The multiple sets of support components are evenly arranged along the circumference of the base 1 and correspond to the number of propeller blades 25. Each set of support components includes two hydraulic cylinders 22 arranged radially along the base 1. A connecting seat is fixedly installed at the output end of the hydraulic cylinders 22. A rotating shaft is rotatably installed on the connecting seat. A buffer support seat 21 is fixedly installed on the rotating shaft. A torsion spring is installed between the buffer support seat 21 and the connecting seat, so that the buffer support seat 21 can rotate within a certain range and can be reset under the action of the torsion spring.

[0046] It should be noted that the top of the buffer support 21 is set with a certain slope and is adapted to the bottom surface of the blade 25, and an elastic rubber pad is provided at the part of the top of the buffer support 21 that contacts the blade 25.

[0047] In the initial state, the center of the positioning rod 27, the center of the hydraulic cylinder 22 of one of the support components, and the center of the base 1 are collinear. At the same time, the highest point of the buffer support 21 is lower than the highest point of the propeller blade 25 at the preset height position, but higher than the lowest point of the propeller blade 25 at the preset height position. When the propeller descends to the preset height position, the top of the buffer support 21 will not contact the bottom surface of the blade 25 in the circumferential direction.

[0048] When the propeller descends to the predetermined height, the servo motor is started and drives the round seat 26 to rotate slowly counterclockwise around the axis of the base 1 through the first gear set. This also drives the positioning rod 27 to rotate slowly counterclockwise. At this time, because the highest point of the positioning rod 27 is higher than the blade 25, the positioning rod 27 will contact the blade 25 in front of it in the direction of rotation and drive the blade 25 to rotate synchronously. This, in turn, drives the propeller to rotate slowly counterclockwise until multiple sets of blades 25 slowly rotate to the abutment position and abut against the elastic rubber pad on the corresponding buffer support seat 21.

[0049] Continue to refer to Figures 1-3 A chuck 23 is provided on the round seat 26 and is coaxially arranged with the round seat 26. The chuck 23 can be a hydraulic four-jaw chuck, and the center of the chuck 23 has a clearance hole for the center column 28 to pass through. When the chuck 23 is installed, the chuck 23 can pass through the clearance hole from the top of the center column 28 and be installed on the round seat 26.

[0050] When the blade 25 reaches the preset height position, the propeller hub 24 is located in the middle of the multiple jaws of the chuck 23. Then, when the blade 25 reaches the holding position, the jaws can be simultaneously brought together inward to clamp and fix the propeller hub 24.

[0051] Through the above process, the propeller can be positioned, and the uniformity of positioning can be maintained in mass production. Then, the upper surface of the fixed propeller blade 25 can be processed.

[0052] After the blade 25 is processed, the propeller is removed by hoisting equipment, and then the positioning rod 27 is reset to its original position by servo motor to facilitate the next hoisting and positioning of the propeller.

[0053] Example 2: Although the above process achieves the guidance and positioning of the propeller blade 25, when the positioning rod 27 drives the propeller blade 25 to rotate and fit into the buffer support 21, the propeller has a large inertia due to its heavy mass. As a result, the propeller blade 25 may cause a large impact on the corresponding buffer support 21. Long-term repeated impacts will damage the buffer support 21 and cause positioning failure.

[0054] To solve this problem, such as Figures 1-2 As shown, a limiting component 4 is provided on the positioning rod 27. This limiting component 4 is used to cooperate with the positioning rod 27 to clamp and limit the blade 25. Specifically:

[0055] The limiting component 4 includes a groove 41 formed on the positioning rod 27 and extending vertically. A slide rod 42 is fixedly installed in the groove 41 in the vertical direction, and the slide rod 42 has a gap with the inner wall of the groove 41.

[0056] Meanwhile, a slider 43 is slidably sleeved on the slider 42. The slider 43 is slidably disposed in the groove 41. A spring 45 is sleeved on the slider 42. The spring 45 is located between the bottom of the groove 41 and the slider 43. A connecting rod 44 is fixedly installed on the slider 43. The connecting rod 44 has a certain length.

[0057] In the initial state, the slider 43 is located at the top of the groove 41 under the action of the spring 45. When the propeller descends to the preset height position, the blade 25 will overlap the upper surface of the connecting rod 44.

[0058] As the blade 25 continues to descend, it drives the connecting rod 44 to move downward. The downward movement of the connecting rod 44 causes the slider 43 to move downward inside the groove 41, overcoming the elastic force of the spring 45, until the blade 25 reaches the preset height position.

[0059] A clamping part 46 is provided on the end of the connecting rod 44 away from the slider 43. The clamping part 46 is used to clamp the corresponding blade 25 when the propeller reaches the preset height position.

[0060] like Figure 2 and Figures 5-6 As shown, the clamping part 46 includes a housing 47 fixedly installed on one end of the connecting rod 44 away from the slider 43. The housing 47 is suspended, and a stepper motor (not shown in the figure) is installed inside the housing 47. A lead screw 52 is installed at the output end of the stepper motor. The lead screw 52 is rotatably installed inside the housing 47, so that the lead screw 52 is driven to rotate inside the housing 47 under the drive of the stepper motor.

[0061] A movable block 48 is threaded onto the lead screw 52, ​​and a slide rail is installed inside the housing 47. The movable block 48 is slidably disposed on the slide rail, so that when the lead screw 52 rotates, the movable block 48 moves along the axis of the lead screw 52 and is guided by the slide rail.

[0062] On both sides of the upper end of the movable block 48, there are protrusions 481 extending out of the box base 47 (e.g., Figure 5As shown), a clearance groove 51 adapted to the protrusion 481 is provided on the box base 47. An extension block 49 is fixedly installed on the top of the two sets of protrusions 481, and a push block 5 is installed on the extension block 49. When the moving block 48 moves, it drives the protrusion 481 to move, and further drives the extension block 49 to move, thereby driving the push block 5 to move and abut against one side of the blade 25 that is in contact with the connecting rod 44. Before the other side of the blade 25 contacts the positioning rod 27, as the push block 5 continues to move, it will drive the blade 25 that is in contact with the upper end of the connecting rod 44 to rotate until the other side of the blade 25 abuts against the positioning rod 27. Then the moving block 48 stops moving. At this time, the blade 25 is clamped and fixed by the cooperation of the push block 5 and the positioning rod 27.

[0063] Then the servo motor is started, and the clamped blade 25 is slowly rotated counterclockwise through the positioning rod 27, which in turn drives the entire propeller to rotate until the blade 25 slowly rotates to the corresponding buffer support 21 and abuts against the elastic rubber pad on the buffer support 21. Because one of the blades 25 is in a clamped state at this time, when the blade 25 rotates and fits against the buffer support 21, it will not cause a large impact on the corresponding buffer support 21, thereby extending the service life of the buffer support 21.

[0064] Finally, when the blade 25 reaches the holding position, the grippers can move inward synchronously to clamp and fix the propeller hub 24.

[0065] Furthermore, during the subsequent processing of the blade 25, the blade 25 is always kept in a clamped state to reduce vibration during the processing.

[0066] After the blade 25 is processed, the stepper motor drives the push block 5 to reset, releasing the clamp on the blade 25. The propeller is then removed by the hoisting equipment. At this time, the connecting rod 44 returns to its initial height under the action of the spring 45. Subsequently, the positioning rod 27 is reset by the servo motor to facilitate the next hoisting and positioning of the propeller.

[0067] Further reference Figures 5-6 An intermittent rotation mechanism can also be provided to drive the extension block 49 to rotate intermittently. The intermittent rotation mechanism includes a drive motor 53 fixedly mounted on the extension block 49 and a rotating rod rotatably mounted on the extension block 49. The push block 5 is fixedly connected to one end of the rotating rod, and the other end of the rotating rod is fixedly connected to the output end of the drive motor 53. Specifically, when the drive motor 53 is activated, it drives the rotating rod to rotate, thereby driving the push block 5 to rotate. This changes the contact point between the push block 5 and the blade 25, so that each time the blade 25 is clamped by the push block 5, it can be clamped by different points of the push block 5 to extend the service life of the push block 5.

[0068] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping device for propeller processing equipment, the propeller comprising a hub and a plurality of blades arranged circumferentially on the hub, characterized in that: The clamping device for the propeller processing equipment includes: A base on which a round seat suitable for being driven to rotate is mounted; A central column is fixedly installed on the circular seat. The central column mates with the hub hole of the propeller hub to perform initial positioning of the propeller. A positioning rod, which is fixedly installed on the circular seat; Multiple sets of support components are evenly arranged along the circumference of the base and correspond to the number of blades. Each set of support components has a buffer support seat arranged radially along the base. A chuck, mounted on the circular seat, is adapted to be actuated to clamp the propeller hub; wherein... The propeller moves along the axial direction of the central column to a preset height position through the engagement of the hub hole and the central column. At this time, the positioning rod is located between two adjacent blades of the propeller at the preset height position. Then, the circular seat is adapted to be driven to rotate so that the positioning rod contacts the blade on the propeller that is in front of its rotation direction, thereby driving the propeller to rotate until the blade abuts against the buffer support seat of the corresponding support assembly, and then the chuck clamps the hub.

2. The clamping device for propeller processing equipment according to claim 1, characterized in that: The upper end of the central column is provided with a conical surface that is smaller at the top and larger at the bottom.

3. The clamping device for propeller processing equipment according to claim 1, characterized in that: The base is provided with a rotary drive mechanism suitable for driving the round seat to rotate. The rotary drive mechanism includes a servo motor and a rotating shaft rotatably installed at the center of the base. The rotating shaft is coaxially and fixedly connected to the round seat. The output end of the servo motor and the rotating shaft are provided with a first gear set.

4. The clamping device for propeller processing equipment according to claim 1, characterized in that: The positioning rod has a groove extending vertically. A sliding rod is installed vertically inside the groove. A slider is vertically slidably mounted on the sliding rod. A spring is mounted on the sliding rod and is located between the bottom of the groove and the slider. A connecting rod is mounted on the slider. One end of the connecting rod is provided with a clamping part that cooperates with the positioning rod to clamp and limit the corresponding blade when the propeller reaches a preset height position.

5. The clamping device for propeller processing equipment according to claim 4, characterized in that: The clamping part includes a housing mounted on the end of the connecting rod away from the slider. A stepper motor is installed inside the housing, and a lead screw is installed at the output end of the stepper motor. The lead screw is rotatably mounted in the housing, and a moving block is threaded onto the lead screw. The upper sides of the movable block are provided with protruding ribs extending out of the box base. The box base is provided with a clearance groove. Extension blocks are fixedly installed on the top of the two sets of protruding ribs, and push blocks are installed on the extension blocks.

6. The clamping device for propeller processing equipment according to claim 5, characterized in that: The clamping part also includes an intermittent rotation mechanism for driving the extension block to rotate intermittently. The intermittent rotation mechanism includes a drive motor fixedly mounted on the extension block and a rotating rod rotatably mounted on the extension block. The push block is fixedly connected to one end of the rotating rod, and the other end of the rotating rod is fixedly connected to the output end of the drive motor.

7. The clamping device for propeller processing equipment according to claim 1, characterized in that: The support assembly includes a hydraulic cylinder mounted on the base, a connecting seat fixedly mounted on the output end of the hydraulic cylinder, a rotating shaft rotatably mounted on the connecting seat, a buffer support fixedly mounted to the rotating shaft, and a torsion spring installed between the buffer support and the connecting seat.

8. The clamping device for propeller processing equipment according to claim 7, characterized in that: An elastic rubber pad is provided at the top of the buffer support where it contacts the blade.

9. The clamping device for propeller processing equipment according to claim 1, characterized in that: The top of the positioning rod is provided with a hemispherical end, the highest point of which is lower than the highest point of the central column. The hemispherical end is adapted to contact the bottom surface of the corresponding blade during the process of the propeller moving along the axial direction of the central column through the hub hole and the central column, so as to guide the propeller to rotate and descend.

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