CN113385889A - Machining process of split machine for front frame of medium-sized loader - Google Patents
Machining process of split machine for front frame of medium-sized loader Download PDFInfo
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- CN113385889A CN113385889A CN202110599170.6A CN202110599170A CN113385889A CN 113385889 A CN113385889 A CN 113385889A CN 202110599170 A CN202110599170 A CN 202110599170A CN 113385889 A CN113385889 A CN 113385889A
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention relates to the technical field of frame machining processes, in particular to a split machining process for a front frame of a medium-sized loader. This technology is earlier processed through small-size machining center with the frame, several bore holes, commentaries on classics hole and face processing that are inconvenient to process with large-scale machining center are accomplished now, on installing the frock that corresponds after having processed, the processing is carried out to rethread large-scale machining center, once only process the completion with the position that other need process, compared with the prior art, two-thirds's process time has been practiced thrift to this technology, and can not occupy large-scale machining center for a long time, two kinds of neotype frocks separately use, need not put the frock side, and be applicable to the machine type processing of difference. The invention has the advantages that: the time is saved, the working efficiency is improved, the yield is improved, and the processing cost is reduced.
Description
Technical Field
The invention relates to the technical field of frame machining processes, in particular to a split machining process for a front frame of a medium-sized loader.
Background
The existing rack used in front of a loader can be machined only by adopting a large-scale machining center and is fixed in a side mounting mode, machining time is long, the time for occupying the large-scale machining center is long, and efficiency is low.
Therefore, a split machining process for the front frame of the medium-sized loader needs to be designed to solve the problems.
Disclosure of Invention
The invention aims to provide a split machining process for a front frame of a medium-sized loader, which overcomes the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a split machining process for a front frame of a medium-sized loader comprises a frame loading surface and a side surface which are machined by a large machining center and a small machining center, and comprises the following specific steps:
s1, processing of part monomers, namely main splicing: the main hinge of the frame is firstly fixedly arranged on a machining tool of a main hinge machine, and then the whole tool and the main hinge are placed on a machining platform of a small machining center and are fixed; the small machining center automatically changes the boring cutter to machine, the upper surface of the front end of the main hinge of the frame is firstly bored, and the lower surface of the main hinge of the frame is machined into another bored hole; then, hole turning is carried out on the end face of the main hinge of the frame along with a hole turning cutter; then, the milling cutter is replaced, and the upper surface and the lower surface of the main hinge joint of the frame are milled respectively; then, changing the boring hole, and processing the boring hole on the two sides of the upper surface of the main hinge of the frame;
s2, machining the single parts, welding left and right wing boxes, milling the single plates of the left and right wing boxes by machining, and installing the large plates of the left and right wing boxes on a tool and fixing the large plates; the method comprises the following steps that wing boxes on the left side and the right side of a rack are machined, a machining center automatically mills a surface, one of the wing box rings is milled, and after machining is finished, the other wing box ring is machined; then, splicing and welding the left wing box and the right wing box, and ensuring the size of the opening through welding;
s3, processing of part monomers, namely front axle seats: installing the welded front axle seat to be machined on an axle seat machining tool, and performing bottom surface milling and hole drilling machining on the axle seat through tool contour positioning;
s4, processing of part monomers, namely turning bucket assembly: installing the ring on a machining tool by welding the lug plate single sheet of the rotary hopper assembly and the ring, and milling the surface of the ring by contour positioning; after the face milling is finished, splicing the point rotating bucket assembly, ensuring the crotch size of the rotating bucket assembly through splicing the point, and welding after the point splicing is finished;
s5, preparing the product: preparing the processed main hinge, the left wing box, the right wing box, the front axle seat and the rotating bucket assembly, and preparing the general assembly of the front frame;
s6, assembling a front frame:
1. the bridge seat is placed on the front frame general assembly tool, and the processed hole of the bridge seat is used for positioning, so that the accuracy is ensured;
2. the machined main hinge is hung on a front frame general assembly tool, the machined main hinge hole is positioned, and the machined hole of the main hinge is inserted into a tool positioning pin and is compressed;
3. hoisting the left and right wing boxes to a front machining assembly splicing point tool, and inserting the left and right wing boxes into positioning pins of 70 and 80 for positioning;
4; mounting the welded rotating bucket component on a main assembly tooling beam, hoisting the beam and the rotating bucket component on a front frame assembly point tooling, and positioning the beam through a positioning pin;
5. the large components are welded and assembled, and the assembly is finished;
s7, welding a front frame: hoisting the front frame assembled in a total mode onto a positioner of the welding robot, positioning through a positioning datum on a positioner tool, and pressing, placing and dropping; performing robot welding, and performing welding operation on a required welding line through a robot manipulator; after welding is finished, hoisting the product;
s8, repairing and grinding the front frame: installing the welded product on a repairing positioner, polishing and repairing the welding seam of the product welded by the robot, and manually welding the welding seam which cannot be welded by the robot; after polishing, repairing and welding, hoisting the product and transferring to machining;
s9, machining of the front frame: mounting the front frame which is completely welded on a machining tool, positioning through a positioning hole on the tool to ensure accurate positioning, and mounting the front frame on a machining platform of a large-scale machining center; and boring holes of the left wing box, the right wing box and the rotary bucket assembly.
Preferably, the first tool and the second tool are both fixed on a processing platform of the processing center through fixing screws.
Preferably, the second frock includes the bottom mounting panel, sets up at the axle type stop device of bottom mounting panel front end, installs at the mount pad of bottom mounting panel rear end, sets up the frame fixed plate on the mount pad, the frame fixed plate is used for the rear end base of fixed frame, be provided with a plurality of fixed orificess on the mount pad, the frame fixed plate passes through set screw cooperation fixed orifices to be fixed on the mount pad, frame fixed plate both sides all are provided with the stopper.
Preferably, the large processing center is a toshiba large processing center BP 150.
Preferably, the small machining center is a toshiba small machining center BP 150.
The invention has the beneficial effects that: this technology is earlier processed through small-size machining center with the frame, several bore holes, commentaries on classics hole and face processing completion that large-scale machining center is inconvenient to process now, on installing the frock that corresponds after having processed, the processing is carried out to rethread large-scale machining center, once only process the completion with the position that other needs processed, compared with the prior art, two-thirds's process time has been practiced thrift to this technology, and can not occupy large-scale machining center for a long time, two kinds of neotype frocks separately use, need not put the frock side, and be applicable to different model processing, and the machining cost is reduced.
Drawings
FIG. 1 illustrates a tooling for machining a conventional frame according to the present invention;
FIG. 2 is a schematic view of a machining tool of a split machine machining process for a front frame of a medium-sized loader according to the present invention;
in the figure: 1. a frame; 2. a limiting column; 3. a fixing plate; 4, mounting a bottom plate; 5. a shaft type limiting device; 6. a mounting seat; 7. a frame fixing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, in the prior art, after a main hinge, a left wing box, a right wing box, a bridge seat and a rotating bucket assembly are welded into an assembly, the assembly is installed in a large machining center through a tool for machining, and the assembly is machined by the large machining center. Fig. 1 is a processing tool of a welded assembly frame 1 in the prior art, the frame 1 welded to an assembly is mounted on the tool, a large number of limiting columns 2 are required to penetrate and fix limiting, a fixing plate 3 is required to fix a top surface, and when the frame 1 is mounted on a working platform of a processing center, the tool can only be placed on one side for processing, if the frame is not placed on one side for processing, several surfaces of the frame of the assembly to be processed can not be processed normally by the processing center due to position difference, and the process can only be matched with a large-scale processing center for processing, is not matched with the normal processing center and cannot be processed; the prior art process occupies too long time of a large-scale machining center, and because the size of the rack is too large, a large amount of time is consumed for fixed installation in the process of fixed installation, the consumed time is long, the efficiency is low, and the machining cost is too high.
Referring to fig. 2, (parts of the frame to be processed in fig. 2 are all circled by a small circle) the embodiment is a split machining process of a front frame of a medium-sized loader, which comprises a frame carrying surface and a side surface which are machined by a large machining center and a small machining center, and comprises the following specific steps:
s1, processing of part monomers, namely main splicing: the main hinge of the frame is firstly fixedly arranged on a machining tool of a main hinge machine, and then the whole tool and the main hinge are placed on a machining platform of a small machining center and are fixed; the small machining center automatically changes the boring cutter to machine, the upper surface of the front end of the main hinge of the frame is firstly bored, and the lower surface of the main hinge of the frame is machined into another bored hole; then, hole turning is carried out on the end face of the main hinge of the frame along with a hole turning cutter; then, the milling cutter is replaced, and the upper surface and the lower surface of the main hinge joint of the frame are milled respectively; then, changing the boring hole, and processing the boring hole on the two sides of the upper surface of the main hinge of the frame;
s2, machining the single parts, welding left and right wing boxes, milling the single plates of the left and right wing boxes by machining, and installing the large plates of the left and right wing boxes on a tool and fixing the large plates; the method comprises the following steps that wing boxes on the left side and the right side of a rack are machined, a machining center automatically mills a surface, one of the wing box rings is milled, and after machining is finished, the other wing box ring is machined; then, splicing and welding the left wing box and the right wing box, and ensuring the size of the opening through welding;
s3, processing of part monomers, namely front axle seats: installing the welded front axle seat to be machined on an axle seat machining tool, and performing bottom surface milling and hole drilling machining on the axle seat through tool contour positioning;
s4, processing of part monomers, namely turning bucket assembly: installing the ring on a machining tool by welding the lug plate single sheet of the rotary hopper assembly and the ring, and milling the surface of the ring by contour positioning; after the face milling is finished, splicing the point rotating bucket assembly, ensuring the crotch size of the rotating bucket assembly through splicing the point, and welding after the point splicing is finished;
s5, preparing the product: preparing the processed main hinge, the left wing box, the right wing box, the front axle seat and the rotating bucket assembly, and preparing the general assembly of the front frame;
s6, assembling a front frame:
1. the bridge seat is placed on the front frame general assembly tool, and the processed hole of the bridge seat is used for positioning, so that the accuracy is ensured;
2. the machined main hinge is hung on a front frame general assembly tool, the machined main hinge hole is positioned, and the machined hole of the main hinge is inserted into a tool positioning pin and is compressed;
3. hoisting the left and right wing boxes to a front machining assembly splicing point tool, and inserting the left and right wing boxes into positioning pins of 70 and 80 for positioning;
4; mounting the welded rotating bucket component on a main assembly tooling beam, hoisting the beam and the rotating bucket component on a front frame assembly point tooling, and positioning the beam through a positioning pin;
5. the large components are welded and assembled, and the assembly is finished;
s7, welding a front frame: hoisting the front frame assembled in a total mode onto a positioner of the welding robot, positioning through a positioning datum on a positioner tool, and pressing, placing and dropping; performing robot welding, and performing welding operation on a required welding line through a robot manipulator; after welding is finished, hoisting the product;
s8, repairing and grinding the front frame: installing the welded product on a repairing positioner, polishing and repairing the welding seam of the product welded by the robot, and manually welding the welding seam which cannot be welded by the robot; after polishing, repairing and welding, hoisting the product and transferring to machining;
s9, machining of the front frame: mounting the front frame which is completely welded on a machining tool, positioning through a positioning hole on the tool to ensure accurate positioning, and mounting the front frame on a machining platform of a large-scale machining center; and boring holes of the left wing box, the right wing box and the rotary bucket assembly.
The first tool and the second tool are fixed on a machining platform of the machining center through fixing screws.
The second frock includes bottom mounting panel 4, sets up at the axle type stop device 5 of 4 front ends of bottom mounting panel, installs mount pad 6, the frame fixed plate 7 of setting on mount pad 6 at bottom mounting panel rear end, the frame fixed plate is used for the rear end base of fixed frame, be provided with a plurality of fixed orificess on the mount pad, the frame fixed plate passes through set screw cooperation fixed orifices to be fixed on the mount pad, frame fixed plate both sides all are provided with the stopper. The bottom mounting panel 1 both sides all are provided with the mounting hole, the mounting hole bilateral symmetry sets up. The mounting holes arranged on two sides of the bottom mounting plate 1 can be matched with different devices for fixed mounting, and the practicability of the mechanism is greatly improved. The tool is fast and accurate to install, and consumes less time and labor.
The large-scale processing center is a Toshiba large-scale processing center BP 150.
The small-sized processing center is a Toshiba small-sized processing center BP 150.
When the embodiment is implemented, the single processing of parts-main splicing: the main hinge of the frame is firstly fixedly arranged on a machining tool of a main hinge machine, and then the whole tool and the main hinge are placed on a machining platform of a small machining center and are fixed; the small machining center automatically changes the boring cutter to machine, the upper surface of the front end of the main hinge of the frame is firstly bored, and the lower surface of the main hinge of the frame is machined into another bored hole; then, hole turning is carried out on the end face of the main hinge of the frame along with a hole turning cutter; then, the milling cutter is replaced, and the upper surface and the lower surface of the main hinge joint of the frame are milled respectively; then, changing the boring hole, and processing the boring hole on the two sides of the upper surface of the main hinge of the frame; machining a part monomer, welding a left wing box and a right wing box, milling a single sheet of the left wing box and the right wing box through machining, installing a large sheet of the left wing box and the right wing box on a tool, and fixing; the method comprises the following steps that wing boxes on the left side and the right side of a rack are machined, a machining center automatically mills a surface, one of the wing box rings is milled, and after machining is finished, the other wing box ring is machined; then, splicing and welding the left wing box and the right wing box, and ensuring the size of the opening through welding; part monomer processing-front axle seat: installing the welded front axle seat to be machined on an axle seat machining tool, and performing bottom surface milling and hole drilling machining on the axle seat through tool contour positioning; part single processing-rotating bucket assembly: installing the ring on a machining tool by welding the lug plate single sheet of the rotary hopper assembly and the ring, and milling the surface of the ring by contour positioning; after the face milling is finished, splicing the point rotating bucket assembly, ensuring the crotch size of the rotating bucket assembly through splicing the point, and welding after the point splicing is finished; preparing the processed main hinge joint, the left and right wing boxes, the front axle seat and the rotating bucket assembly, wherein the main hinge joint, the left and right wing boxes, the front axle seat and the rotating bucket assembly are all processed in a small-sized processing center to prepare for the total assembly work of a front frame; after the assembly is finished, the frame is installed on a second tool, the machined boring hole of the main hinge joint surface of the frame is aligned to the shaft-shaped column of the second tool to be clamped, a corresponding cushion block is replaced according to the height of the frame, and a front axle seat of the frame is installed on the cushion block to finish installation; placing the installed rack and the second tool on a processing platform of a large-scale processing center and fixing; and processing the wing boxes on the left side and the right side of the rack, processing the front axle seat of the rack after processing, taking out after processing, and forming.
The invention has the advantages that the rack is firstly processed by the small-sized processing center, a plurality of boring holes, turning holes and surfaces which are inconvenient to process by the large-sized processing center are processed, the machined holes are installed on the corresponding tool and then processed by the large-sized processing center, and other positions needing to be processed are processed at one time.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A split machining process for a front frame of a medium-sized loader is characterized by comprising the following steps: the machining method comprises the following steps of machining the rack carrying surface and the side surface by adopting a large machining center and a small machining center, and specifically comprises the following steps:
s1, processing of part monomers, namely main splicing: the main hinge of the frame is firstly fixedly arranged on a machining tool of a main hinge machine, and then the whole tool and the main hinge are placed on a machining platform of a small machining center and are fixed; the small machining center automatically changes the boring cutter to machine, the upper surface of the front end of the main hinge of the frame is firstly bored, and the lower surface of the main hinge of the frame is machined into another bored hole; then, hole turning is carried out on the end face of the main hinge of the frame along with a hole turning cutter; then, the milling cutter is replaced, and the upper surface and the lower surface of the main hinge joint of the frame are milled respectively; then, changing the boring hole, and processing the boring hole on the two sides of the upper surface of the main hinge of the frame;
s2, machining the single parts, welding left and right wing boxes, milling the single plates of the left and right wing boxes by machining, and installing the large plates of the left and right wing boxes on a tool and fixing the large plates; the method comprises the following steps that wing boxes on the left side and the right side of a rack are machined, a machining center automatically mills a surface, one of the wing box rings is milled, and after machining is finished, the other wing box ring is machined; then, splicing and welding the left wing box and the right wing box, and ensuring the size of the opening through welding;
s3, processing of part monomers, namely front axle seats: installing the welded front axle seat to be machined on an axle seat machining tool, and performing bottom surface milling and hole drilling machining on the axle seat through tool contour positioning;
s4, processing of part monomers, namely turning bucket assembly: installing the ring on a machining tool by welding the lug plate single sheet of the rotary hopper assembly and the ring, and milling the surface of the ring by contour positioning; after the face milling is finished, splicing the point rotating bucket assembly, ensuring the crotch size of the rotating bucket assembly through splicing the point, and welding after the point splicing is finished;
s5, preparing the product: preparing the processed main hinge, the left wing box, the right wing box, the front axle seat and the rotating bucket assembly, and preparing the general assembly of the front frame;
s6, assembling a front frame:
1. the bridge seat is placed on the front frame general assembly tool, and the processed hole of the bridge seat is used for positioning, so that the accuracy is ensured;
2. the machined main hinge is hung on a front frame general assembly tool, the machined main hinge hole is positioned, and the machined hole of the main hinge is inserted into a tool positioning pin and is compressed;
3. hoisting the left and right wing boxes to a front machining assembly splicing point tool, and inserting the left and right wing boxes into positioning pins of 70 and 80 for positioning;
4; mounting the welded rotating bucket component on a main assembly tooling beam, hoisting the beam and the rotating bucket component on a front frame assembly point tooling, and positioning the beam through a positioning pin;
5. the large components are welded and assembled, and the assembly is finished;
s7, welding a front frame: hoisting the front frame assembled in a total mode onto a positioner of the welding robot, positioning through a positioning datum on a positioner tool, and pressing, placing and dropping; performing robot welding, and performing welding operation on a required welding line through a robot manipulator; after welding is finished, hoisting the product;
s8, repairing and grinding the front frame: installing the welded product on a repairing positioner, polishing and repairing the welding seam of the product welded by the robot, and manually welding the welding seam which cannot be welded by the robot; after polishing, repairing and welding, hoisting the product and transferring to machining;
s9, machining of the front frame: mounting the front frame which is completely welded on a machining tool, positioning through a positioning hole on the tool to ensure accurate positioning, and mounting the front frame on a machining platform of a large-scale machining center; and boring holes of the left wing box, the right wing box and the rotary bucket assembly.
2. The split machining process for the front frame of the medium-sized loader according to claim 1, wherein: the first tool and the second tool are fixed on a machining platform of the machining center through fixing screws.
3. The split machining process for the front frame of the medium-sized loader according to claim 1, wherein: the second frock includes the bottom mounting panel, sets up at the axle type stop device of bottom mounting panel front end, installs at the mount pad of bottom mounting panel rear end, sets up the frame fixed plate on the mount pad, the frame fixed plate is used for fixing the rear end base of frame, be provided with a plurality of fixed orificess on the mount pad, the frame fixed plate passes through set screw cooperation fixed orifices to be fixed on the mount pad, frame fixed plate both sides all are provided with the stopper.
4. The split machining process for the front frame of the medium-sized loader according to claim 1, wherein: the large-scale processing center is a Toshiba large-scale processing center BP 150.
5. The split machining process for the front frame of the medium-sized loader according to claim 1, wherein: the small-sized processing center is a Toshiba small-sized processing center BP 150.
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| CN202110599170.6A CN113385889B (en) | 2021-05-31 | 2021-05-31 | Machining process of split machine for front frame of medium-sized loader |
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| CN202110599170.6A CN113385889B (en) | 2021-05-31 | 2021-05-31 | Machining process of split machine for front frame of medium-sized loader |
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