CN110948021B - Milling process for end face and bottom face of bearing bush cover of automobile engine - Google Patents

Milling process for end face and bottom face of bearing bush cover of automobile engine Download PDF

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Publication number
CN110948021B
CN110948021B CN201911212512.3A CN201911212512A CN110948021B CN 110948021 B CN110948021 B CN 110948021B CN 201911212512 A CN201911212512 A CN 201911212512A CN 110948021 B CN110948021 B CN 110948021B
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China
Prior art keywords
bearing bush
bush cover
sliding block
fixed
face
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CN201911212512.3A
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CN110948021A (en
Inventor
寻伟基
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Tongling Yixin Machinery Manufacturing Co ltd
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Tongling Yixin Machinery Manufacturing Co ltd
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Priority to CN201911212512.3A priority Critical patent/CN110948021B/en
Publication of CN110948021A publication Critical patent/CN110948021A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C3/00Milling particular work; Special milling operations; Machines therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C7/00Milling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool
    • B23C7/02Milling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool to lathes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting

Abstract

The invention belongs to the technical field of bearing bush cover machining, and particularly relates to a process for milling the end face and the bottom face of a bearing bush cover of an automobile engine, wherein a feeding device used in the process comprises a bottom plate, a driving motor is fixed at the top end of the bottom plate, a screw rod is fixed at the output shaft end of the driving motor, a sliding block is arranged at the top end of the bottom plate in a sliding manner along the length direction of the bottom plate, the screw rod is in threaded connection with the sliding block, a first push rod motor is fixedly installed at the top end of the sliding block, a pressing plate is fixed at the output shaft end of the first push rod motor, a pressure sensor is arranged at; according to the invention, through the arrangement of the feeding frame and the discharging frame, a plurality of groups of bearing bush covers can be milled continuously, so that the milling efficiency is improved; through automatic last unloading and the tight setting of clamp, reduced manual operation to the cost of labor has been reduced.

Description

Milling process for end face and bottom face of bearing bush cover of automobile engine
Technical Field
The invention belongs to the technical field of bearing bush cover machining, and particularly relates to a process for milling the end face and the bottom face of a bearing bush cover of an automobile engine.
Background
The bearing bush is the part of the sliding bearing contacted with the shaft neck, is in the shape of a tile-shaped semi-cylindrical surface, is very smooth, is generally made of wear-resistant materials such as bronze, antifriction alloy and the like, and can be made of wood, engineering plastics or rubber under special conditions. The bearing shell cover is a member provided for mounting a bearing shell, and is fixed to a cylinder block of an engine.
The milling process for the end face and the bottom face of the bearing shell cover of the automobile engine is provided by the invention.
Disclosure of Invention
In order to make up for the defects of the prior art, the process for milling the end face and the bottom face of the bearing bush cover of the automobile engine provided by the invention has the advantages that the loading and unloading efficiency of the bearing bush cover is improved by using the loading frame and the unloading frame, the loading and unloading process is automated, and the milling efficiency is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a process for milling the end surface and the bottom surface of a bearing bush cover of an automobile engine, which comprises the following steps:
s1: the loading device is arranged between the two lathes, so that a sliding block on the loading device can repeatedly pass through the lathes to adjust lathe cutters, the distance between the cutters is the distance between the end surface and the bottom surface of the bearing bush cover, the bearing bush cover is milled while moving, and the loading device is cleaned by using a compressed air source, so that the clamping error of the loading device on the bearing bush cover is reduced;
s2: the bearing bush covers are placed in groups and are sequentially placed into the feeding device in the correct direction, so that the end face and the bottom face of each bearing bush cover are located in the working range of a lathe, a plurality of groups of bearing bush covers are loaded at one time, the time required by successive loading is shortened, the time required by loading is shortened, the bearing bush covers are clamped, the bearing bush covers are prevented from being deviated during milling, the milling accuracy is improved, a machine tool and the feeding device are started to mill the bearing bush covers continuously, the bearing bush covers are automatically loaded and unloaded during the milling process, and the machined bearing bush covers enter the unloading frame;
s3: after the bearing bush cover loaded in the loading device is machined, the bearing bush cover is reloaded, the time required by repeated loading is reduced, the labor intensity of workers is also reduced, the machined bearing bush cover is taken out and trimmed, burrs on the end face and the bottom face of the bearing bush cover are removed, and the trimmed bearing bush cover is stacked, stacked and conveyed to a warehouse;
wherein the feeding device used in S1 and S2 comprises a bottom plate, a driving motor is fixed at the top end of the bottom plate, a screw rod is fixed at the output shaft end of the driving motor, a sliding block is arranged at the top end of the bottom plate in a sliding manner along the length direction of the bottom plate, the screw rod is in threaded connection with the sliding block, a first push rod motor is fixedly installed at the top end of the sliding block, a pressing plate is fixed at the output shaft end of the first push rod motor, a pressure sensor is arranged at the bottom end of the pressing plate, a square through hole is formed in the top end of the sliding block, rectangular through holes are formed in the side wall of the sliding block, two feeding frames and two discharging frames are symmetrically fixed at the top end of the bottom plate, an accommodating groove is formed in the side wall of the feeding frame, a second push rod motor is fixed at one end of the feeding frame, which, when the milling machine is used, the end face and the bottom face of the bearing bush cover need to be milled when the bearing bush cover is machined, the bearing bush cover needs to be placed into a clamp for clamping when milling is conducted, then a machine tool is started to mill the bearing bush cover, manual operation is more in the milling process, the milling efficiency is low, and the labor intensity of workers is high; through the arrangement of the feeding device, when the bearing bush covers are milled, the bearing bush covers are divided into a plurality of groups and then are sequentially placed into the accommodating grooves of the feeding frame, and then the second push rod motor is controlled through the controller to extend, so that the push plate is driven to move; the moving push plate enters the containing groove to push the bearing bush cover, so that the bearing bush cover enters the rectangular through hole of the sliding block; after the bearing bush cover enters the sliding block, the controller controls the first push rod motor to drive the pressing plate to move downwards to pass through the square through hole and then extrude the bearing bush cover, so that the bearing bush cover is pressed tightly; the pressure sensor at the bottom end of the pressure plate receives the pressure between the pressure plate and the bearing bush cover, and sends a signal to the controller after the pressure reaches a set value, so that the controller controls the first push rod motor to stop working, and the bearing bush cover is prevented from deforming under larger pressure; after the bearing bush cover is pressed tightly, the controller starts the driving motor to drive the screw rod to rotate, so that the sliding block in threaded connection with the screw rod moves at the top end of the bottom plate; arranging a feeding device between the two machine tools, and enabling the cutters of the two machine tools to be located on the end face and bottom face moving paths of the bearing cap; when the bearing bush cover moves to a cutter under the driving of the sliding block, the cutter mills the end surface and the bottom surface of the bearing bush cover; the milled bearing bush cover is moved to the other end of the bottom plate, and then the first push rod motor drives the pressing plate to move upwards, so that the bearing bush cover is in a free state; then a second push rod motor at the other end works to drive a corresponding push plate to move, so that the bush cover which is not processed enters the sliding block and the processed bush cover is extruded into a corresponding blanking frame; after the bearing bush cover is refilled, a first push rod motor at the other end drives a pressing plate to tightly press the bearing bush cover, and then the driving motor rotates reversely to drive the sliding block to move reversely; the slider is round trip movement under driving motor's drive for the slider drives the continuous milling of axle bush lid, and goes up unloading and need not successive manual operation, only need once put into multiunit axle bush lid and can accomplish many times and mill the operation, makes and mills technology degree of automation and improve, thereby has reduced the cost of labor.
Preferably, a first plate is fixed on the side wall of the push plate, a second plate is fixed on the side wall of the feeding frame, a first groove is formed in the side wall of the feeding frame, a cylindrical air bag is fixed between the adjacent first plate and the adjacent second plate, a plurality of telescopic rods are arranged in an inner cavity of the cylindrical air bag and used for limiting the cylindrical air bag, an air pipe is arranged at one end, located on the second plate, of the cylindrical air bag, a plurality of fork pipes are arranged at the other end of the air pipe, air holes are formed in the tops of the feeding frame and the sliding block and are respectively communicated with the corresponding air holes, and a first electromagnetic valve is arranged between the air pipe and the corresponding cylindrical air bag; through the arrangement of the cylindrical air bag, the push plate is driven by the second push rod motor to move, and meanwhile, the first plate is driven to move, so that the distance between the first plate and the second plate is shortened, and the cylindrical air bag is compressed; the gas in the cylindrical air bag enters the air pipe after being compressed, and is stored in the air pipe through the control of a first electromagnetic valve; when the sliding block moves to the other end of the bottom plate, the bearing bush cover is milled, and the bearing bush cover needs to be replaced and filled again; when the bearing bush cover is filled, the first electromagnetic valve is started, so that gas in the gas pipe is distributed into the fork pipe and is sprayed out from the gas hole to clean the interior of the sliding block, and scraps in the interior of the sliding block are blown out, so that the cleaning degree of the interior of the sliding block is improved; the multiple telescopic rods in the cylindrical air bag are used for limiting the cylindrical air bag, so that the cylindrical air bag is prevented from being bent when being extruded, and the cleaning effect of the sliding block is guaranteed.
Preferably, the air holes are obliquely arranged, the air outlet direction of the air holes faces the direction of the blanking frame, when the air-blowing type blanking device is used, when the rectangular through holes of the sliding block are cleaned by air, if the air is blown vertically downwards, the blowing effect of the air on the fragments is poor, and the fragments are easy to remain in the sliding block; the air holes are inclined, the air outlet direction of the air holes faces the direction of the blanking frame, and the air sprayed out of the air holes is inclined, so that the moving direction of the scraps is consistent with the moving direction of the bearing bush cover; after the scraps are cleaned, the error generated when the bearing bush cover is clamped is reduced, so that the milling precision of the bearing bush cover is improved.
Preferably, two cylindrical shells are fixed at the top end of the bottom plate through a mounting plate, a round hole is formed in one end, close to each other, of each cylindrical shell, a limiting rod is movably connected in the round hole, a reset spring is fixed between one end, located in each cylindrical shell, of each limiting rod and the inner wall of each cylindrical shell, a limiting hole is formed in the side wall of each sliding block, each limiting rod is in clearance fit with the corresponding limiting hole, the cylindrical air bag is connected with the corresponding cylindrical shell through a guide pipe, a second electromagnetic valve is arranged in the middle of each guide pipe, and when the bearing bush cover is used, the position of each bearing bush cover can be changed during filling of the bearing bush cover, so that the bearing; through the arrangement of the limiting rod, the cylindrical air bag is compressed when the push plate moves, so that part of gas in the cylindrical air bag enters the guide pipe; when the machined bearing bush cover is extruded out of the sliding block, the second electromagnetic valve opens the guide pipe, so that gas in the guide pipe enters the cylindrical shell, and the limiting rod is ejected out; the jacked limiting rod enters the inside of the sliding block to form a barrier after passing through the limiting hole, when an unprocessed bearing bush cover moves into the sliding block, the arc surface of the bearing bush cover is in contact with the surface of the limiting rod, the bearing bush cover is in close contact with the limiting rod under the pushing of the second push rod motor, and therefore the bearing bush cover is located at a milling position; after the positioning is completed, the second electromagnetic valve controls the gas in the cylindrical shell to be discharged, so that the limiting rod returns to the initial position under the action of the reset spring, and the influence on the movement of the bearing bush cover is avoided.
Preferably, two connecting plates are symmetrically fixed at the top end of the pressing plate, guide rods are fixed at the bottom ends of the two connecting plates, four mounting frames are symmetrically fixed on the side wall of the sliding block, a square rod is movably connected to the mounting frames, a limiting block is fixed at one end, facing the sliding block, of the square rod, a guide block is fixed at one end, away from the sliding block, of the square rod, a limiting spring is fixed between the guide block and the corresponding mounting frame, an inclined plane is arranged at the top end of the guide block, a limiting groove is formed in the side wall of the sliding block, when the milling tool is used, the shaft tile cover is prone to shaking during milling, and if the clamping force is insufficient, milling failure of the end face and the bottom; through the arrangement of the limiting block, the connecting plate is driven to descend when the pressing plate moves downwards, so that the guide rod moves downwards; the guide rod moving downwards contacts the inclined surface of the guide block, so that the guide block moves horizontally, and the square rod moves towards the sliding block; the square rod moves to drive the limiting block to move, so that the limiting block enters the inside of the sliding block after passing through the limiting groove, the limiting block clamps the bearing bush cover for the second time, the milling plane of the bearing bush cover is prevented from being deviated, and the milling precision is improved; after the pressure plate moves upwards, the guide rod moves upwards synchronously, so that the square rod returns to the initial position under the action of the limiting spring, and the shaft bushing cover is released from being clamped.
Preferably, an included angle between the inclined plane at the top end of the guide block and the bottom plate is 60-80 degrees, the guide block is used for driving the limiting block to move, when the guide rod is used, the guide block is driven to move when the guide rod moves downwards, and if the angle of the inclined plane of the guide block is too small, the guide rod and the guide block are easy to collide; an included angle between the inclined plane at the top end of the guide moving block and the bottom plate is set to be 60-80 degrees, so that the guide rod is not easy to collide when contacting with the guide moving block, and the friction between the guide rod and the guide moving block is reduced, thereby being beneficial to the horizontal movement of the guide moving block; meanwhile, the friction between the guide rod and the guide moving block is reduced, the loss degree of the guide moving block is reduced, and the service life of the guide moving block is prolonged.
The invention has the following beneficial effects:
1. according to the milling process for the end face and the bottom face of the bearing bush cover of the automobile engine, the feeding device used in the milling process can continuously mill a plurality of groups of bearing bush covers through the arrangement of the feeding frame and the discharging frame, so that the milling efficiency is improved.
2. According to the milling process for the end face and the bottom face of the bearing bush cover of the automobile engine, the feeding device used in the milling process is automatically arranged in a feeding and discharging mode and clamped, so that manual operation is reduced, and labor cost is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a three-dimensional view of a loading device used in the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic view of the guide rod and the guide block in operation;
FIG. 5 is a schematic view of the operation state of the stop lever;
in the figure: bottom plate 1, driving motor 2, screw rod 3, slider 4, gas pocket 41, push rod motor 5, clamp plate 6, square through hole 7, rectangle through hole 8, go up work or material rest 9, lower work or material rest 10, accomodate groove 11, push rod motor 12 No. two, push pedal 13, a board 14, a board 15, tube-shape gasbag 16, cylinder casing 17, gag lever post 18, connecting plate 19, guide arm 20, mounting bracket 21, square pole 22, stopper 23, guide block 24, spacing spring 25.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the process for milling the end surface and the bottom surface of the bearing shell cover of the automobile engine comprises the following steps:
s1: the loading device is arranged between the two lathes, so that a sliding block on the loading device can repeatedly pass through the lathes to adjust lathe cutters, the distance between the cutters is the distance between the end surface and the bottom surface of the bearing bush cover, the bearing bush cover is milled while moving, and the loading device is cleaned by using a compressed air source, so that the clamping error of the loading device on the bearing bush cover is reduced;
s2: the bearing bush covers are placed in groups and are sequentially placed into the feeding device in the correct direction, so that the end face and the bottom face of each bearing bush cover are located in the working range of a lathe, a plurality of groups of bearing bush covers are loaded at one time, the time required by successive loading is shortened, the time required by loading is shortened, the bearing bush covers are clamped, the bearing bush covers are prevented from being deviated during milling, the milling accuracy is improved, a machine tool and the feeding device are started to mill the bearing bush covers continuously, the bearing bush covers are automatically loaded and unloaded during the milling process, and the machined bearing bush covers enter the unloading frame;
s3: after the bearing bush cover loaded in the loading device is machined, the bearing bush cover is reloaded, the time required by repeated loading is reduced, the labor intensity of workers is also reduced, the machined bearing bush cover is taken out and trimmed, burrs on the end face and the bottom face of the bearing bush cover are removed, and the trimmed bearing bush cover is stacked, stacked and conveyed to a warehouse;
the feeding device used in S1 and S2 comprises a bottom plate 1, a driving motor 2 is fixed at the top end of the bottom plate 1, a screw rod 3 is fixed at the output shaft end of the driving motor 2, a sliding block 4 is arranged at the top end of the bottom plate 1 in a sliding manner along the length direction of the bottom plate, the screw rod 3 is in threaded connection with the sliding block 4, a first push rod motor 5 is fixedly installed at the top end of the sliding block 4, a pressing plate 6 is fixed at the output shaft end of the first push rod motor 5, a pressure sensor is arranged at the bottom end of the pressing plate 6, a square through hole 7 is arranged at the top end of the sliding block 4, a rectangular through hole 8 is arranged on the side wall of the sliding block 4, two feeding frames 9 and two discharging frames 10 are symmetrically fixed at the top end of the bottom plate 1, a containing groove 11 is arranged on the side wall of the feeding frame 9, a second push rod, the top end of the bottom plate 1 is provided with a controller, the controller is used for controlling the feeding device to work, when the feeding device is used, the end face and the bottom face of the bearing bush cover need to be milled when the bearing bush cover is machined, the bearing bush cover needs to be placed into a clamp for clamping during milling, then a machine tool is started to mill the bearing bush cover, and manual operation is more during milling, so that the milling efficiency is low, and the labor intensity of workers is high; through the arrangement of the feeding device, when the bearing bush covers are milled, the bearing bush covers are divided into a plurality of groups and then are sequentially placed into the accommodating grooves 11 of the feeding frame 9, and then the second push rod motor 12 is controlled through the controller, so that the second push rod motor 12 extends, and the push plate 13 is driven to move; the moving push plate 13 enters the containing groove 11 to push the bearing cap, so that the bearing cap enters the rectangular through hole 8 of the sliding block 4; after the bearing bush cover enters the sliding block 4, the controller controls the first push rod motor 5, so that the first push rod motor 5 drives the pressing plate 6 to move downwards to extrude the bearing bush cover after passing through the square through hole 7, and the bearing bush cover is pressed tightly; a pressure sensor at the bottom end of the pressure plate 6 receives the pressure between the pressure plate 6 and the bearing bush cover, and sends a signal to the controller when the pressure reaches a set value, so that the controller controls the first push rod motor 5 to stop working, and the bearing bush cover is prevented from deforming under larger pressure; after the bearing bush cover is pressed tightly, the controller starts the driving motor 2, so that the driving motor 2 drives the screw rod 3 to rotate, and the sliding block 4 in threaded connection with the screw rod 3 moves at the top end of the bottom plate 1; arranging a feeding device between the two machine tools, and enabling the cutters of the two machine tools to be located on the end face and bottom face moving paths of the bearing cap; when the bearing bush cover moves to a cutter under the driving of the sliding block 4, the cutter mills the end surface and the bottom surface of the bearing bush cover; the milled bearing bush cover is moved to the other end of the bottom plate 1, and then a first push rod motor 5 drives the pressing plate 6 to move upwards, so that the bearing bush cover is in a free state; then, a second push rod motor 12 at the other end works to drive a corresponding push plate 13 to move, so that the unprocessed bearing bush cover enters the sliding block 4 and the processed bearing bush cover is extruded into the corresponding blanking frame 10; after the bearing bush cover is refilled, a first push rod motor 5 at the other end drives a pressing plate 6 to compress the bearing bush cover, and then a driving motor 2 rotates reversely to drive a sliding block 4 to move reversely; the sliding block 4 is driven by the driving motor 2 to move back and forth, so that the sliding block 4 drives the bearing bush cover to continuously mill, successive manual operation is not needed in feeding and discharging, multiple times of milling operation can be completed only by putting multiple groups of bearing bush covers once, the automation degree of the milling process is improved, and the labor cost is reduced.
As a specific embodiment of the invention, a first plate 14 is fixed on the side wall of the push plate 13, a second plate 15 is fixed on the side wall of the loading frame 9, a first groove is arranged on the side wall of the loading frame 9, a cylindrical air bag 16 is fixed between the adjacent first plate 14 and second plate 15, a plurality of telescopic rods are arranged in the inner cavity of the cylindrical air bag 16 and are used for limiting the cylindrical air bag 16, an air pipe is arranged at one end of the cylindrical air bag 16, positioned at the second plate 15, the other end of the air pipe is provided with a plurality of fork pipes, air holes 41 are arranged at the tops of the loading frame 9 and the sliding block 4, the fork pipes are respectively communicated with the corresponding air holes 41, a first electromagnetic valve is arranged between the air pipe and the corresponding cylindrical air bag 16, when in use, a large amount of debris is generated during milling of the axle bush cover, and the position of the axle bush cover is interfered after the debris enters the sliding block 4, the position of the bearing bush cover is not right, so that the milling of the bearing bush cover fails; through the arrangement of the cylindrical air bag 16, the push plate 13 is driven by the second push rod motor 12 to move, and meanwhile, the first plate 14 is driven to move, so that the distance between the first plate 14 and the second plate 15 is shortened, and the cylindrical air bag 16 is compressed; the gas in the cylindrical air bag 16 enters the air pipe after being compressed, and is stored in the air pipe through the control of a first electromagnetic valve; when the sliding block 4 moves to the other end of the bottom plate 1, the bearing bush cover is milled, and the bearing bush cover needs to be replaced and filled again; when the bearing bush cover is filled, the first electromagnetic valve is started, so that gas in the gas pipe is distributed into the branch pipe and is sprayed out from the gas hole 41 to clean the interior of the sliding block 4, and debris in the sliding block 4 is blown out, so that the cleaning degree of the interior of the sliding block 4 is improved; the multiple telescopic rods in the cylindrical air bag 16 are used for limiting the cylindrical air bag 16, so that the cylindrical air bag 16 is prevented from being bent during extrusion, and the cleaning effect of the sliding block 4 is ensured.
As a specific embodiment of the present invention, the air holes 41 are all obliquely arranged, the air outlet direction of the air holes 41 faces the blanking frame 10 direction, when in use, when the rectangular through hole 8 of the slider 4 is cleaned by using air, if the air is blown vertically downwards, the blowing effect of the air on the chips is poor, and the chips are likely to remain inside the slider 4; the air holes 41 are inclined, the air outlet direction of the air holes 41 faces the blanking frame 10 direction, the air sprayed out of the air holes 41 is inclined, and therefore the moving direction of the chippings is consistent with the moving direction of the bearing cap; after the scraps are cleaned, the error generated when the bearing bush cover is clamped is reduced, so that the milling precision of the bearing bush cover is improved.
As a specific embodiment of the present invention, two cylindrical housings 17 are fixed to the top end of the bottom plate 1 through a mounting plate, a circular hole is formed in one end of each cylindrical housing 17, a limiting rod 18 is movably connected in the circular hole, a return spring is fixed between one end of the limiting rod 18 located in the cylindrical housing 17 and the inner wall of the cylindrical housing 17, a limiting hole is formed in the side wall of the slider 4, the limiting rod 18 and the limiting hole are in clearance fit, the cylindrical airbag 16 and the cylindrical housing 17 are connected through a conduit, and a second electromagnetic valve is arranged in the middle of the conduit; through the arrangement of the limiting rod 18, the cylindrical air bag 16 is compressed when the push plate 13 moves, so that part of gas in the cylindrical air bag 16 enters the catheter; while the processed bearing bush cover is extruded out of the sliding block 4, the second electromagnetic valve opens the guide pipe, so that gas in the guide pipe enters the cylindrical shell 17, and the limiting rod 18 is ejected out; the jacked limiting rod 18 enters the inside of the sliding block 4 through the limiting hole to form a barrier, when an unprocessed bearing bush cover moves to the inside of the sliding block 4, the arc surface of the bearing bush cover is in surface contact with the limiting rod 18, the bearing bush cover is in close contact with the limiting rod 18 under the pushing of the second push rod motor 12, and therefore the bearing bush cover is located at a milling position; after the positioning is completed, the second electromagnetic valve controls the gas in the cylindrical shell 17 to be discharged, so that the limiting rod 18 returns to the initial position under the action of the return spring, and the influence on the movement of the bearing cap is avoided.
As a specific embodiment of the present invention, two connecting plates 19 are symmetrically fixed at the top end of the pressing plate 6, guide rods 20 are fixed at the bottom ends of the two connecting plates 19, four mounting frames 21 are symmetrically fixed on the side wall of the slider 4, a square rod 22 is movably connected to the mounting frames 21, a limiting block 23 is fixed at one end of the square rod 22 facing the slider 4, a guide block 24 is fixed at one end of the square rod 22 away from the slider 4, a limiting spring 25 is fixed between the guide block 24 and the corresponding mounting frame 21, an inclined plane is arranged at the top end of the guide block 24, and a limiting groove is arranged on the side wall of the slider 4; through the arrangement of the limiting block 23, the connecting plate 19 is driven to descend when the pressing plate 6 moves downwards, so that the guide rod 20 moves downwards; the guide rod 20 moving downwards contacts the inclined surface of the guide block 24, so that the guide block 24 moves horizontally, and the square rod 22 moves towards the sliding block 4; the square rod 22 moves to drive the limiting block 23 to move, so that the limiting block 23 enters the sliding block 4 after passing through the limiting groove, the limiting block 23 clamps the bearing cap for the second time, the milling plane of the bearing cap is prevented from being deviated, and the milling precision is improved; after the pressure plate 6 moves upwards, the guide rod 20 moves upwards synchronously, so that the square rod 22 returns to the initial position under the action of the limiting spring 25, and the clamping of the bearing bush cover is released.
As a specific embodiment of the invention, an included angle between the inclined plane at the top end of the guide block 24 and the bottom plate 1 is 60-80 °, the guide block 24 is used for driving the limit block 23 to move, when the guide rod 20 moves downwards, the guide block 24 is driven to move, and if the angle of the inclined plane of the guide block 24 is too small, the guide rod 20 and the guide block 24 are easy to collide; an included angle between the inclined plane at the top end of the guide block 24 and the bottom plate 1 is set to be 60-80 degrees, so that the guide rod 20 is not easy to collide when contacting with the guide block 24, and the friction between the guide rod 20 and the guide block 24 is reduced, thereby being beneficial to the horizontal movement of the guide block 24; meanwhile, the friction between the guide rod 20 and the guide moving block 24 is reduced, the loss degree of the guide moving block 24 is reduced, and the service life of the guide moving block 24 is prolonged.
When the milling machine is used, the end face and the bottom face of the bearing bush cover need to be milled when the bearing bush cover is machined, the bearing bush cover needs to be placed into a clamp for clamping when milling is conducted, then a machine tool is started to mill the bearing bush cover, manual operation is more in the milling process, the milling efficiency is low, and the labor intensity of workers is high; through the arrangement of the feeding device, when the bearing bush covers are milled, the bearing bush covers are divided into a plurality of groups and then are sequentially placed into the accommodating grooves 11 of the feeding frame 9, and then the second push rod motor 12 is controlled through the controller, so that the second push rod motor 12 extends, and the push plate 13 is driven to move; the moving push plate 13 enters the containing groove 11 to push the bearing cap, so that the bearing cap enters the rectangular through hole 8 of the sliding block 4; after the bearing bush cover enters the sliding block 4, the controller controls the first push rod motor 5, so that the first push rod motor 5 drives the pressing plate 6 to move downwards to extrude the bearing bush cover after passing through the square through hole 7, and the bearing bush cover is pressed tightly; a pressure sensor at the bottom end of the pressure plate 6 receives the pressure between the pressure plate 6 and the bearing bush cover, and sends a signal to the controller when the pressure reaches a set value, so that the controller controls the first push rod motor 5 to stop working, and the bearing bush cover is prevented from deforming under larger pressure; after the bearing bush cover is pressed tightly, the controller starts the driving motor 2, so that the driving motor 2 drives the screw rod 3 to rotate, and the sliding block 4 in threaded connection with the screw rod 3 moves at the top end of the bottom plate 1; arranging a feeding device between the two machine tools, and enabling the cutters of the two machine tools to be located on the end face and bottom face moving paths of the bearing cap; when the bearing bush cover moves to a cutter under the driving of the sliding block 4, the cutter mills the end surface and the bottom surface of the bearing bush cover; the milled bearing bush cover is moved to the other end of the bottom plate 1, and then a first push rod motor 5 drives the pressing plate 6 to move upwards, so that the bearing bush cover is in a free state; then, a second push rod motor 12 at the other end works to drive a corresponding push plate 13 to move, so that the unprocessed bearing bush cover enters the sliding block 4 and the processed bearing bush cover is extruded into the corresponding blanking frame 10; after the bearing bush cover is refilled, a first push rod motor 5 at the other end drives a pressing plate 6 to compress the bearing bush cover, and then a driving motor 2 rotates reversely to drive a sliding block 4 to move reversely; the sliding block 4 is driven by the driving motor 2 to move back and forth, so that the sliding block 4 drives the bearing bush cover to continuously mill, successive manual operation is not needed in feeding and discharging, multiple times of milling operation can be completed only by putting multiple groups of bearing bush covers once, the automation degree of the milling process is improved, and the labor cost is reduced.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The milling process for the end face and the bottom face of the bearing bush cover of the automobile engine is characterized by comprising the following steps of:
s1: installing a feeding device between two lathes, adjusting lathe cutters to enable the distance between the cutters to be the distance between the end face and the bottom face of the bearing bush cover, and cleaning the feeding device by using a compressed air source;
s2: the bearing bush covers are placed in groups and sequentially placed into a feeding device according to the correct direction, the bearing bush covers are clamped, and a machine tool and the feeding device are started to continuously mill the bearing bush covers;
s3: reloading the bearing bush cover, taking out the processed bearing bush cover, trimming, stacking the trimmed bearing bush cover, and conveying to a warehouse;
wherein the feeding device used in S1 and S2 comprises a bottom plate (1), a driving motor (2) is fixed at the top end of the bottom plate (1), a screw rod (3) is fixed at the output shaft end of the driving motor (2), a sliding block (4) is arranged at the top end of the bottom plate (1) in a sliding mode along the length direction of the bottom plate, the screw rod (3) is in threaded connection with the sliding block (4), a first push rod motor (5) is fixedly installed at the top end of the sliding block (4), a pressing plate (6) is fixed at the output shaft end of the first push rod motor (5), a pressure sensor is arranged at the bottom end of the pressing plate (6), a square through hole (7) is arranged at the top end of the sliding block (4), a rectangular through hole (8) is arranged on the side wall of the sliding block (4), two feeding racks (9) and two discharging racks (10) are symmetrically fixed at the top, a second push rod motor (12) is fixed at one end, far away from the blanking frame (10), of the feeding frame (9), a push plate (13) is fixed at the output shaft end of the second push rod motor (12), and a controller is arranged at the top end of the bottom plate (1) and used for controlling the feeding device to work; through the arrangement of the feeding device, when the bearing bush covers are milled, the bearing bush covers are divided into a plurality of groups and then are sequentially placed into the accommodating grooves (11) of the feeding frame (9), and then the second push rod motor (12) is controlled through the controller, so that the second push rod motor (12) extends, and the push plate (13) is driven to move; the moving push plate (13) enters the containing groove (11) to push the bearing bush cover, so that the bearing bush cover enters the rectangular through hole (8) of the sliding block (4); after the bearing bush cover enters the sliding block (4), the controller controls the first push rod motor (5) to enable the first push rod motor (5) to drive the pressing plate (6) to move downwards to extrude the bearing bush cover after passing through the square through hole (7), and therefore the bearing bush cover is pressed tightly; a pressure sensor at the bottom end of the pressure plate (6) receives the pressure between the pressure plate (6) and the bearing bush cover, and sends a signal to the controller when the pressure reaches a set value, so that the controller controls the first push rod motor (5) to stop working, and the deformation of the bearing bush cover is avoided; after the bearing bush cover is pressed tightly, the controller starts the driving motor (2) to enable the driving motor (2) to drive the screw rod (3) to rotate, and therefore the sliding block (4) in threaded connection with the screw rod (3) moves at the top end of the bottom plate (1); arranging a feeding device between the two machine tools, and enabling the cutters of the two machine tools to be located on the end face and bottom face moving paths of the bearing cap; when the bearing bush cover moves to a cutter under the driving of the sliding block (4), the cutter mills the end surface and the bottom surface of the bearing bush cover; the milled bearing bush cover is moved to the other end of the bottom plate (1), and then a first push rod motor (5) drives the pressing plate (6) to move upwards, so that the bearing bush cover is in a free state; then a second push rod motor (12) at the other end works to drive a corresponding push plate (13) to move, so that the unprocessed bearing bush cover enters the sliding block (4) and the processed bearing bush cover is extruded into the corresponding blanking frame (10); after the bearing bush cover is refilled, a first push rod motor (5) at the other end drives a pressing plate (6) to compress the bearing bush cover, and then a driving motor (2) rotates reversely to drive a sliding block (4) to move reversely; the sliding block (4) is driven by the driving motor (2) to move back and forth, so that the sliding block (4) drives the bearing bush cover to continuously mill, successive manual operation is not needed in feeding and discharging, multiple milling operations can be completed only by putting multiple groups of bearing bush covers once, the automation degree of the milling process is improved, and the labor cost is reduced.
2. The process for milling the end face and the bottom face of the automobile engine bearing bush cover as claimed in claim 1, wherein the process comprises the following steps: be fixed with one number board (14) on push pedal (13) lateral wall, be fixed with two number board (15) on material loading frame (9) lateral wall, be equipped with a groove on material loading frame (9) lateral wall, it is adjacent be fixed with tube-shape gasbag (16) between one number board (14) and two number board (15), be equipped with the multisection telescopic link in tube-shape gasbag (16) inner chamber, the multisection telescopic link is used for the spacing of tube-shape gasbag (16), the one end that tube-shape gasbag (16) are located two number board (15) is equipped with the trachea, the tracheal other end is equipped with a plurality of prongs, material loading frame (9) and slider (4) top all are equipped with gas pocket (41), the prong communicates respectively with gas pocket (41) that correspond, be equipped with the solenoid valve No. one between trachea and the corresponding tube-shape gasbag (16).
3. The process for milling the end face and the bottom face of the automobile engine bearing bush cover as claimed in claim 2, wherein the process comprises the following steps: the air holes (41) are obliquely arranged, and the air outlet direction of the air holes (41) faces to the direction of the lower material rack (10).
4. The process for milling the end face and the bottom face of the automobile engine bearing bush cover as claimed in claim 2, wherein the process comprises the following steps: bottom plate (1) top is fixed with two cylinder casing (17) through the mounting panel, the one end that cylinder casing (17) are close to each other is equipped with the round hole, and swing joint has gag lever post (18) in the round hole, be fixed with reset spring between gag lever post (18) one end that is located cylinder casing (17) and cylinder casing (17) inner wall, the lateral wall of slider (4) is equipped with spacing hole, gag lever post (18) and spacing hole are clearance fit, pass through pipe connection between tube-shape gasbag (16) and cylinder casing (17), the pipe middle part is equipped with the solenoid valve No. two.
5. The process for milling the end face and the bottom face of the automobile engine bearing bush cover as claimed in claim 1, wherein the process comprises the following steps: the top symmetry of clamp plate (6) is fixed with two connecting plates (19), two connecting plate (19) bottom all is fixed with guide arm (20), the symmetry is fixed with four mounting brackets (21) on the lateral wall of slider (4), swing joint has square pole (22) on mounting bracket (21), square pole (22) are fixed with spacing piece (23) towards the one end of slider (4), the one end that slider (4) were kept away from in square pole (22) is fixed with guide block (24), be fixed with between guide block (24) and the corresponding mounting bracket (21) spacing spring (25), guide block (24) top is equipped with the inclined plane, slider (4) lateral wall is equipped with the spacing groove.
6. The process for milling the end face and the bottom face of the automobile engine bearing bush cover as claimed in claim 5, wherein the process comprises the following steps: the included angle between the top end inclined plane of the guide block (24) and the bottom plate (1) ranges from 60 degrees to 80 degrees, and the guide block (24) is used for driving the limiting block (23) to move.
CN201911212512.3A 2019-12-02 2019-12-02 Milling process for end face and bottom face of bearing bush cover of automobile engine Active CN110948021B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343873A (en) * 1971-11-26 1974-01-16 Int Portable Pipe Mills Ltd Milling machine
US4483433A (en) * 1981-01-22 1984-11-20 Micafil Ag Apparatus for the feeding and removal of workpieces to and from work stations coupled in parallel
DE3936784A1 (en) * 1989-11-04 1991-09-19 Glyco Metall Werke Jig for preparation of bearing shells - has magnetic grip for shells with magnetic pick=up
CN203804554U (en) * 2013-12-19 2014-09-03 常州创胜特尔数控机床设备有限公司 Full-automatic machining unit for digital control boring and milling machine
CN104759666A (en) * 2015-03-17 2015-07-08 温惠珍 Milling method increasing right-angle precision of workpiece
CN106112073A (en) * 2016-08-02 2016-11-16 盛瑞传动股份有限公司 Piston pin two ends facing attachment
CN206578614U (en) * 2017-01-11 2017-10-24 广州恒申智能化设备有限公司 A kind of automatic loading and unloading system
CN207414793U (en) * 2017-11-20 2018-05-29 盐城市精派组合机床有限公司 A kind of engine crankshaft bearing lid founds sleeping compound Milling Machining lathe
CN110394489A (en) * 2019-07-17 2019-11-01 烟台大丰轴瓦有限责任公司 Oily line equipment in bearing shell boring
CN110508851A (en) * 2019-09-19 2019-11-29 山东森德数控机械有限公司 Leaf springs of car width bilateral mills side production line and production procedure

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343873A (en) * 1971-11-26 1974-01-16 Int Portable Pipe Mills Ltd Milling machine
US4483433A (en) * 1981-01-22 1984-11-20 Micafil Ag Apparatus for the feeding and removal of workpieces to and from work stations coupled in parallel
DE3936784A1 (en) * 1989-11-04 1991-09-19 Glyco Metall Werke Jig for preparation of bearing shells - has magnetic grip for shells with magnetic pick=up
CN203804554U (en) * 2013-12-19 2014-09-03 常州创胜特尔数控机床设备有限公司 Full-automatic machining unit for digital control boring and milling machine
CN104759666A (en) * 2015-03-17 2015-07-08 温惠珍 Milling method increasing right-angle precision of workpiece
CN106112073A (en) * 2016-08-02 2016-11-16 盛瑞传动股份有限公司 Piston pin two ends facing attachment
CN206578614U (en) * 2017-01-11 2017-10-24 广州恒申智能化设备有限公司 A kind of automatic loading and unloading system
CN207414793U (en) * 2017-11-20 2018-05-29 盐城市精派组合机床有限公司 A kind of engine crankshaft bearing lid founds sleeping compound Milling Machining lathe
CN110394489A (en) * 2019-07-17 2019-11-01 烟台大丰轴瓦有限责任公司 Oily line equipment in bearing shell boring
CN110508851A (en) * 2019-09-19 2019-11-29 山东森德数控机械有限公司 Leaf springs of car width bilateral mills side production line and production procedure

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