Machining tool for assembling crankshaft chain wheel of marine engine
Technical Field
The invention belongs to the technical field of crankshaft sprocket assembly, and particularly relates to a processing tool for assembling a crankshaft sprocket of a marine engine.
Background
The assembly of the crankshaft and the sprocket generally requires polishing and cleaning of the inner and outer wall surfaces of the crankshaft and the sprocket in contact with each other prior to installation to remove burrs, chips, and other impurities for subsequent installation, and during the assembly, manually performing measurements to align the mounting holes of the crankshaft and the sprocket with each other, in the prior art, the crankshaft is generally fixed in position by a jig, the mounting holes of the sprocket and the crankshaft are aligned with each other by the measurements, the sprocket is clamped by the clamp, the inner wall surface and the outer wall surface which are mutually contacted with the crankshaft and the sprocket are manually polished and cleaned by a worker, the sprocket is pushed to move after polishing so as to assemble the sprocket on the crankshaft, in the process, the polishing of the crankshaft and the sprocket and the mutual alignment of the mounting holes of the crankshaft and the sprocket are completed by manpower, the degree of automation is low, the operation and the processing speed are low, and a plurality of inconveniences are brought to production.
Disclosure of Invention
The invention aims to solve the problems and provide a processing tool for assembling a crankshaft chain wheel of a marine engine.
The invention realizes the above purpose through the following technical scheme:
a processing frock for marine engine crankshaft sprocket assembly, including the supporting seat, locate the bent axle fixing base at supporting seat top, still include:
The clamping piece is rotationally connected with the supporting seat and is used for clamping and driving the chain wheel to move;
the first polishing assembly is fixedly arranged on the supporting seat and is used for polishing and cleaning the inner wall of the sprocket wheel, which is in contact with the crankshaft;
the second polishing assembly is fixedly clamped with the clamping piece and penetrates through the first polishing assembly, and the second polishing assembly is used for polishing and cleaning the outer wall of the crankshaft, which is in contact with the chain wheel;
The driving piece is arranged on the supporting seat and used for driving the clamping piece and the second polishing assembly to rotate together;
the second telescopic piece is arranged on the supporting seat and is rotationally connected with the second polishing component, and the second telescopic piece is used for driving the second polishing component to move;
and the locating piece is arranged in the crankshaft mounting hole and is used for locating the chain wheel.
As a further optimization scheme of the invention, the clamping piece comprises a frame body, a rotating rod, two screw rods, a first synchronizing piece and a first servo motor, wherein the rotating rod is arranged on one side of the frame body and is rotationally connected with the supporting seat through a bearing;
the screw rod is characterized in that connecting threads are arranged on the upper section and the lower section of the screw rod, the directions of the connecting threads of the two sections are opposite, nut seats are connected to the connecting threads of the two sections through ball nut pairs, sliding seats are arranged between the two nut seats above and between the two nut seats below, clamping plates are connected to the sliding seats in a sliding mode, and a first telescopic piece for pushing the clamping plates to move is arranged on the frame body.
As a further optimization scheme of the invention, the first polishing assembly comprises a fixed cylinder fixedly connected with the supporting seat, rotatably connected with the frame body through a bearing, a first polishing piece and a first cleaning piece, wherein the first polishing piece and the first cleaning piece are sequentially arranged at one end, far away from the supporting seat, of the fixed cylinder.
As a further optimization scheme of the invention, the second polishing component comprises a moving rod, a bidirectional telescopic part, two mounting plates, a second polishing part and a second cleaning part, wherein the moving rod penetrates through the fixed cylinder and is clamped and fixed with the rotating rod through a plurality of clamping parts I, the bidirectional telescopic part is arranged at one end of the moving rod close to the crankshaft, the mounting plates are respectively arranged at two movable ends of the bidirectional telescopic part, and the second polishing part and the second cleaning part are respectively arranged at the opposite surfaces of the two mounting plates.
As a further optimization scheme of the invention, the first clamping piece comprises a first fixing groove arranged on the rotating rod, a first spring arranged in the first fixing groove, a first clamping block connected with the first spring and slidingly connected with the first fixing groove, and a first clamping groove arranged on the moving rod and used for clamping the first clamping block;
The second telescopic piece is fixedly arranged on the supporting seat and is rotationally connected with the movable rod through a bearing.
As a further optimization scheme of the invention, the driving piece comprises a second servo motor and a second synchronizing piece arranged between an output shaft of the second servo motor and the rotating rod.
As a further optimization scheme of the invention, the positioning piece comprises a plurality of connecting screws fixedly arranged in the crankshaft mounting holes, a second spring detachably connected in the connecting screws, a positioning rod connected with the second spring and extending out of the connecting screws, a rolling shaft rotatably connected to the movable end of the positioning rod, and a connecting rod for connecting the positioning rod, wherein a plurality of clamping pieces II are arranged between the connecting screws and the positioning rod;
The second clamping piece comprises a second fixing groove formed in the connecting screw, a third spring arranged in the second fixing groove, a second clamping block arranged at the movable end of the third spring, and a second clamping groove formed in the positioning rod and used for clamping the second clamping block.
The invention has the beneficial effects that:
1) According to the invention, the chain wheel is clamped by the clamping piece, the clamping piece and the second polishing component are driven to rotate by the driving piece, the inner wall and the outer wall of the chain wheel and the inner wall of the crankshaft which are in contact with each other are polished and cleaned, the second telescopic piece drives the polishing component to move along the clamping piece, the chain wheel is pushed by the clamping piece to move, and the chain wheel is assembled on the crankshaft after being positioned by the positioning piece, so that the automatic positioning is realized, the automation degree is high, multiple processing processes can be performed at one station, and the operation is simple and convenient;
2) The invention can drive the second polishing component to rotate together by the clamping piece before assembling the sprocket and the crankshaft, so as to polish and clean the inner and outer walls of the sprocket and the crankshaft which are in contact with each other, and can also align the mounting holes of the sprocket and the crankshaft by the rotation of the clamping piece, thereby facilitating the subsequent mounting.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of the clamping member, first and second sanding assemblies, drive member, third telescoping member, and positioning member of the present invention.
Fig. 3 is a front cross-sectional view of a part of the structure of the movable lever and the rotary lever of the present invention.
Fig. 4 is a front cross-sectional view of the positioning member of the present invention.
Fig. 5 is an enlarged view of the portion a of fig. 4 according to the present invention.
Fig. 6 is a side view of the positioning member of the present invention.
The device comprises a supporting seat, a clamping member (2), a frame body (21), a rotating rod (22), a first fixing groove (221), a first spring (222), a first clamping block (223), a second clamping block (23), a screw rod (24), a nut seat (25), a sliding seat (26), a clamping plate (27), a first telescopic member (28), a first servo motor (29), a first synchronous member (3), a first polishing component (31), a fixing cylinder (32), a first polishing member (33), a first cleaning member (4), a second polishing component (41), a moving rod (411), a first clamping groove (42), a bidirectional telescopic member (43), a mounting plate (44), a second polishing member (45), a second cleaning member (5), a driving member (51), a second servo motor (52), a second synchronous member (6), a second telescopic member (7), a positioning member (71), a connecting screw rod (72), a positioning rod (73), a second spring (74), a roller, 75, a connecting rod (76), a second fixing groove (77), a third spring (78), a second clamping block (79), a second clamping seat (8) and a crankshaft.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, wherein it is to be understood that the following detailed description is for the purpose of further illustrating the application only and is not to be construed as limiting the scope of the application, as various insubstantial modifications and adaptations of the application to those skilled in the art can be made in light of the foregoing disclosure.
As shown in fig. 1-6, a processing tool for assembling a crankshaft sprocket of a marine engine comprises a supporting seat 1, a crankshaft fixing seat 8 arranged at the top of the supporting seat 1, and further comprises:
the clamping piece 2 is rotationally connected with the supporting seat 1, and the clamping piece 2 is used for clamping and driving the chain wheel to move;
the first polishing component 3 is fixedly arranged on the supporting seat 1, and the first polishing component 3 is used for polishing and cleaning the inner wall of the sprocket wheel, which is in contact with the crankshaft;
The second polishing component 4 is fixedly clamped with the clamping piece 2 and penetrates through the first polishing component 3, and the second polishing component 4 is used for polishing and cleaning the outer wall of the crankshaft, which is in contact with the chain wheel;
the driving piece 5 is arranged on the supporting seat 1, and the driving piece 5 is used for driving the clamping piece 2 and the polishing component II 4 to rotate together;
The second telescopic piece 6 is arranged on the supporting seat 1 and is rotationally connected with the second polishing component 4, and the second telescopic piece 6 is used for driving the second polishing component 4 to move;
and the locating piece 7 is arranged in the crankshaft mounting hole, and the locating piece 7 is used for locating the chain wheel.
Preferably, the clamping member 2 includes a frame 21, a rotating rod 22 disposed at one side of the frame 21 and rotationally connected to the supporting seat 1 through a bearing, two screw rods 23 symmetrically disposed and rotationally connected to the frame 21, a first synchronizing member 29 disposed on the two screw rods 23, and a first servo motor 28 connected to one of the screw rods 23;
The screw rod 23 upper and lower two sections all are equipped with the connecting screw thread, and two sections connecting screw thread opposite directions, all are connected with nut seat 24 through ball nut pair on the two sections connecting screw thread, all are equipped with sliding seat 25 between two nut seats 24 that lie in the top, between two nut seats 24 that lie in the below, sliding connection has grip block 26 on the sliding seat 25, be equipped with the first extensible member 27 that is used for promoting grip block 26 removal on the framework 21.
Preferably, the first polishing component 3 includes a fixed cylinder 31 fixedly connected with the supporting seat 1 and rotatably connected with the frame 21 through a bearing, a first polishing member 32 and a first cleaning member 33 sequentially disposed at one end of the fixed cylinder 31 away from the supporting seat 1.
Preferably, the second polishing component 4 includes a moving rod 41 penetrating through the fixed cylinder 31 and fastened to the rotating rod 22 by a plurality of first fastening members, a bidirectional telescopic member 42 disposed at one end of the moving rod 41 near the crankshaft, two mounting plates 43 disposed at two movable ends of the bidirectional telescopic member 42, and a second polishing member 44 and a second cleaning member 45 disposed at opposite sides of the two mounting plates 43.
Preferably, the first locking member comprises a first fixing groove 221 formed on the rotating rod 22, a first spring 222 disposed inside the first fixing groove 221, a first locking block 223 connected with the first spring 222 and slidably connected with the first fixing groove 221, and a first locking groove 411 formed on the moving rod 41 for locking the first locking block 223;
The second telescopic member 6 is fixedly arranged on the supporting seat 1 and is rotatably connected with the movable rod 41 through a bearing.
Further, after the two movable ends of the bidirectional telescopic member 42 are retracted, the sum of the thickness of the two mounting plates 43 and the distance between the two mounting plates 43 is smaller than the diameter of the first polishing member 32, so that the two mounting plates 43 can pass through the through hole in the middle of the sprocket.
Preferably, the driving member 5 includes a second servo motor 51, and a second synchronizing member 52 provided between an output shaft of the second servo motor 51 and the rotating lever 22.
In this embodiment, the first synchronizing member 29 and the second synchronizing member 52 are two synchronizing wheels and a synchronous belt disposed between the two synchronizing wheels;
The first telescopic piece 27 and the second telescopic piece 6 are unidirectional electric push rods, and the bidirectional telescopic piece 42 is a bidirectional electric push rod;
The first cleaning member 33 and the second cleaning member 45 are any one of cleaning cloths and cleaning sponges;
the first grinding member 32 and the second grinding member 44 are any one of grinding whetstones and grinding sandpaper.
Preferably, the positioning member 7 includes a plurality of connecting screws 71 fixedly disposed in the crankshaft mounting hole, a second spring 73 detachably connected inside the connecting screws 71, a positioning rod 72 connected with the second spring 73 and extending out of the connecting screws 71, a roller 74 rotatably connected to the movable end of the positioning rod 72, and a connecting rod 75 for connecting the positioning rod 72, wherein a plurality of second clamping members are disposed between the connecting screws 71 and the positioning rod 72;
The second clamping member comprises a second fixing groove 76 formed in the connecting screw 71, a third spring 77 arranged in the second fixing groove 76, a second clamping block 78 arranged at the movable end of the third spring 77, and a second clamping groove 79 formed in the positioning rod 72 and used for clamping the second clamping block 78.
When the novel crank is used, a crankshaft is placed on the crankshaft fixing seat 8, a chain wheel is placed between two clamping plates 26, a first servo motor 28 works to drive two screw rods 23 to rotate through a first synchronizing piece 29, the screw rods 23 drive two sliding seats 25 and the clamping plates 26 to be close to each other through nut seats 24 so as to clamp and fix the chain wheel through the clamping plates 26, at the moment, a first grinding piece 32 is positioned in a through hole in the middle of the chain wheel, a second telescopic piece 6 pushes a second grinding piece 4 to be close to the crankshaft, so that the second grinding piece 44, a second cleaning piece 45 and the outer wall of the crankshaft, which is in contact with the chain wheel, are contacted with the chain wheel, are driven to rotate through a driving piece 5, the clamping piece 2 rotates, the inner wall, which is in contact with the crankshaft, of the chain wheel is polished through the first grinding piece 32, burrs on the inner wall, which is in contact with the chain wheel are removed, and the ground through the second grinding piece 44 rotates, and the ground scraps can be removed, so that the novel crank is convenient to install later;
The second telescopic piece 6 drives the movable rod 41 to move towards the direction of the clamping piece 2, the two mounting plates 43 are driven to mutually approach through the bidirectional telescopic piece 42, then the clamping plate 26 and the chain wheel are pushed to approach towards the crankshaft through the first telescopic piece 27, when the positioning rod 72 contacts with the chain wheel, the clamping plate 26 is stopped being pushed, and in the process of pushing the clamping plate 26 and the chain wheel to move, the first cleaning piece 33 can clean the fragments polished on the inner wall of the chain wheel contacted with the crankshaft;
Then, the driving member 5 is made to drive the clamping member 2 to rotate, when the positioning rod 72 encounters the mounting hole on the sprocket, the positioning rod 72 extends to the inside of the mounting hole of the sprocket under the action of the elastic force of the second spring 73, meanwhile, the driving member 5 is closed, the clamping plate 26 and the sprocket are pushed to move towards the crankshaft by the first telescopic member 27, so that the sprocket is assembled on the crankshaft, then the positioning rod 72 is taken down, and the connecting screw 71 is connected with the upper nut in a threaded manner.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.