CN113385888A - Machining process for lower frame revolution surface all-in-one machine of medium excavator - Google Patents
Machining process for lower frame revolution surface all-in-one machine of medium excavator Download PDFInfo
- Publication number
- CN113385888A CN113385888A CN202110599166.XA CN202110599166A CN113385888A CN 113385888 A CN113385888 A CN 113385888A CN 202110599166 A CN202110599166 A CN 202110599166A CN 113385888 A CN113385888 A CN 113385888A
- Authority
- CN
- China
- Prior art keywords
- welding
- machining
- hoisting
- tool
- center support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003754 machining Methods 0.000 title claims abstract description 37
- 238000003466 welding Methods 0.000 claims abstract description 74
- 238000003801 milling Methods 0.000 claims abstract description 14
- 238000004080 punching Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005516 engineering process Methods 0.000 claims abstract description 3
- 230000007547 defect Effects 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 241000565357 Fraxinus nigra Species 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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 excavators, in particular to a machining process of a lower frame and a revolving surface all-in-one machine of a medium-sized excavator. The method comprises a hoisting center support and a center support upper circular ring, wherein the hoisting center support and the center support upper circular ring comprise the following steps: preparing materials, installing and welding workpieces, welding, fixing a tool, machining, milling a surface and punching. The invention has the advantages that: through improving technology, the upper portion ring of the central support is spliced with the hoisting central support, welding, machining face milling and punching are carried out, the ring is subjected to thermal deformation firstly, machining is carried out again, machining hole deformation is avoided, machining hole precision is ensured, product quality is improved, hole deformation caused by heating of the machining hole is avoided, and the precision is influenced or even bad.
Description
Technical Field
The invention relates to the technical field of excavators, in particular to a machining process of a lower frame and a revolving surface all-in-one machine of a medium-sized excavator.
Background
The existing lower frame of the medium-sized excavator is subjected to spot splicing and welding after the circular ring is machined firstly, during welding, a machined hole is heated to cause hole deformation, the precision is influenced and even bad is caused, and in order to solve the problems, the machining process of the lower frame revolution surface all-in-one machine of the medium-sized excavator is provided.
Disclosure of Invention
The invention aims to provide a machining process of a lower frame revolution surface all-in-one machine of a medium excavator, so as to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a lower frame surface of revolution all-in-one processing technology of medium-sized excavator, its includes hoist and mount center support, center support upper portion ring, and its hoist and mount center support and center support upper portion support ring include the step:
s1, preparing materials, namely preparing a central support bottom plate, a middle vertical plate, an upper cover plate, a middle circular ring and an unmachined upper circular ring for later use;
s2, workpiece mounting and welding:
1. hoisting a central support bottom plate to a central support splicing point tool, positioning the contour of the bottom plate through the tool, and placing a positioning point gap to ensure complete fitting;
2. hoisting the middle vertical plate and the middle circular ring to a center support splicing point tool, ensuring that the vertical plate and the middle supporting circular ring are installed in place through tool specification, knocking a part if a gap exists, ensuring that the part is installed in place, and welding the middle vertical plate, the circular ring and the bottom plate after confirming that no problem exists;
3. hoisting the upper cover plate of the central support to a central support splicing point tool, confirming a gap between the upper cover plate and the vertical plate and between the upper cover plate and the middle support ring, and positioning the outline of the upper cover plate through the tool to ensure that the upper cover plate is installed in place and completely attached; after the complete attachment is confirmed, welding the upper cover plate, the vertical plate and other parts;
4. hoisting an upper ring which is not machined onto a tool to ensure that the upper ring is attached to an upper cover plate, positioning the inner side of the ring through the tool, confirming that no problem exists, and welding the upper ring and the upper cover plate;
5. after the preliminary point splicing is completed, hoisting the center support after the point splicing to prepare for welding by a robot;
s3, welding a workpiece, namely hoisting the spliced center support to a welding robot positioner for tooling, clamping and fixing to ensure that the product cannot fall off; and carrying out robot automatic welding on the welding seam needing to be welded. And after the welding is finished, hoisting the central support product from the positioner.
And S4, repairing and polishing the welded center support after the robot finishes automatic welding, and meanwhile, manually repairing and welding the region which cannot be welded by the robot to ensure that the requirement of a drawing is met.
S5, machining and clamping, namely hoisting the product onto a tool on machining equipment, and positioning according to a positioning reference on the tool (in the X \ Y \ Z direction) to ensure that no gap exists between the product and the positioning reference;
and S6, performing machining operation, namely milling and punching, fixedly installing the tool on a machining platform of a machining center, automatically replacing a milling cutter by the machining center, milling the welding positions of the hoisting center support and the upper ring of the center support, flattening the surface, replacing a hole turning cutter, turning the upper ring of the center support, and finishing machining after the hole is punched.
Preferably, the welding parameters are welding current of 160-180A, voltage of 22-23.2V, welding speed of 8-12 mm/s and shielding gas flow of 10-12L/min.
Preferably, the machining center is a large machining center.
Preferably, the weld and the surroundings are ground by a bowl brush before welding, and oil stains on the surface are removed by alcohol wiping paper after welding to prevent defects from being generated.
Preferably, the black ash on the surface of the welding seam is cleaned by a bowl brush during post-welding treatment, and the ultrahigh, arcing and arc-closing defects of the welding seam are polished by a rotary file.
Preferably, the tool comprises a bottom plate, a central upright column arranged on the bottom plate, three groups of auxiliary upright columns which are equiaxed and respectively arranged around the central upright column, base plates arranged on the central upright column and the auxiliary upright columns, an axial limiting seat arranged at the front end of the bottom plate, and a pressing block limiting mechanism arranged on the side edge of the bottom plate.
The invention has the beneficial effects that: according to the invention, through improving the process, the upper ring of the central support and the hoisting central support are spliced, welding, machining, face milling and punching are carried out, the ring is deformed by heating and then machined, the deformation of the machined hole is avoided, the precision of the machined hole is ensured, the quality of a product is improved, and the problem that the precision is influenced or even poor due to the deformation of the machined hole caused by heating is avoided.
Drawings
FIG. 1 is a tool assembly schematic diagram of a machining process of a lower frame revolution surface all-in-one machine of a medium excavator, disclosed by the invention;
in the figure: 1. a base plate; 2. a central upright post; 3. an auxiliary column; 4. a base plate; 5. an axial limiting seat; 6. a pressing block limiting mechanism; 7. a central support.
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.
The prior art is that the method comprises the following steps of,
s1, firstly processing, milling and punching a circular ring on the upper part of the central support;
s2, hoisting the machined ring at the upper part of the central support to a tool, and taking the ring as a machining hole position and processing the ring as positioning;
s3, hoisting the central support, and annularly splicing the upper part of the central support;
s4, welding and fixing the hoisting center support and the upper ring of the center support;
the process ring is machined firstly and then is spliced and welded, and during welding, the machined hole is heated to cause hole deformation, influence on precision and even cause poor precision.
The embodiment is a process for machining a lower frame revolution surface all-in-one machine of a medium excavator, which comprises a hoisting center support and a center support upper circular ring, wherein the hoisting center support and the center support upper supporting circular ring comprise the following steps:
s1, preparing materials, namely preparing a central support bottom plate, a middle vertical plate, an upper cover plate, a middle circular ring and an unmachined upper circular ring for later use;
s2, workpiece mounting and welding:
1. hoisting a central support bottom plate to a central support splicing point tool, positioning the contour of the bottom plate through the tool, and placing a positioning point gap to ensure complete fitting;
2. hoisting the middle vertical plate and the middle circular ring to a center support splicing point tool, ensuring that the vertical plate and the middle supporting circular ring are installed in place through tool specification, knocking a part if a gap exists, ensuring that the part is installed in place, and welding the middle vertical plate, the circular ring and the bottom plate after confirming that no problem exists;
3. hoisting the upper cover plate of the central support to a central support splicing point tool, confirming a gap between the upper cover plate and the vertical plate and between the upper cover plate and the middle support ring, and positioning the outline of the upper cover plate through the tool to ensure that the upper cover plate is installed in place and completely attached; after the complete attachment is confirmed, welding the upper cover plate, the vertical plate and other parts;
4. hoisting an upper ring which is not machined onto a tool to ensure that the upper ring is attached to an upper cover plate, positioning the inner side of the ring through the tool, confirming that no problem exists, and welding the upper ring and the upper cover plate;
5. after the preliminary point splicing is completed, hoisting the center support after the point splicing to prepare for welding by a robot;
s3, welding a workpiece, namely hoisting the spliced center support to a welding robot positioner for tooling, clamping and fixing to ensure that the product cannot fall off; and carrying out robot automatic welding on the welding seam needing to be welded. And after the welding is finished, hoisting the central support product from the positioner.
And S4, repairing and polishing the welded center support after the robot finishes automatic welding, and meanwhile, manually repairing and welding the region which cannot be welded by the robot to ensure that the requirement of a drawing is met.
S5, machining and clamping, namely hoisting the product onto a tool on machining equipment, and positioning according to a positioning reference on the tool (in the X \ Y \ Z direction) to ensure that no gap exists between the product and the positioning reference;
and S6, performing machining operation, namely milling and punching, fixedly installing the tool on a machining platform of a machining center, automatically replacing a milling cutter by the machining center, milling the welding positions of the hoisting center support and the upper ring of the center support, flattening the surface, replacing a hole turning cutter, turning the upper ring of the center support, and finishing machining after the hole is punched.
The welding parameters include welding current 160-180A, voltage 22-23.2V, welding speed 8-12 mm/s and protective gas flow 10-12L/min.
The machining center is a large-scale machining center. The equipment is large and is not suitable for other processing centers.
Before welding, the welding seam and its periphery are ground by bowl brush, after welding, the greasy dirt on the surface is removed by wiping paper of alcohol to prevent the generation of defect.
And cleaning black ash on the surface of the welding seam by using a bowl brush during post-welding treatment, and polishing the ultrahigh, arcing and arc-closing defects of the welding seam by using a rotary file.
Referring to fig. 1, the tool includes a bottom plate 1, a central upright column 2 disposed on the bottom plate 1, three groups of auxiliary upright columns 3 disposed around the central upright column 2 at equal axes, a backing plate 4 disposed on the central upright column 2 and the auxiliary upright columns 3, an axial limiting seat 5 disposed at the front end of the bottom plate 1, and a bolt fixing mechanism 6 disposed at the rear end of the bottom plate 1.
According to the invention, through an improved process, the upper ring of the central support 7 and the hoisting central support are spliced, welding, machining, face milling and punching are carried out, the ring is deformed by heating and then machined, the deformation of a machined hole is avoided, the precision of the machined hole is ensured, the quality of a product is improved, and the hole deformation, the precision influence and even the poor result caused by the heating of the machined hole are avoided.
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 (6)
1. The utility model provides a medium-sized excavator lower carriage surface of revolution all-in-one machine processing technology which characterized in that: the method comprises a hoisting center support and a center support upper circular ring, wherein the hoisting center support and the center support upper supporting circular ring comprise the following steps:
s1, preparing materials, namely preparing a central support bottom plate, a middle vertical plate, an upper cover plate, a middle circular ring and an unmachined upper circular ring for later use;
s2, workpiece mounting and welding:
1. hoisting a central support bottom plate to a central support splicing point tool, positioning the contour of the bottom plate through the tool, and placing a positioning point gap to ensure complete fitting;
2. hoisting the middle vertical plate and the middle circular ring to a center support splicing point tool, ensuring that the vertical plate and the middle supporting circular ring are installed in place through tool specification, knocking a part if a gap exists, ensuring that the part is installed in place, and welding the middle vertical plate, the circular ring and the bottom plate after confirming that no problem exists;
3. hoisting the upper cover plate of the central support to a central support splicing point tool, confirming a gap between the upper cover plate and the vertical plate and between the upper cover plate and the middle support ring, and positioning the outline of the upper cover plate through the tool to ensure that the upper cover plate is installed in place and completely attached; after the complete attachment is confirmed, welding the upper cover plate, the vertical plate and other parts;
4. hoisting an upper ring which is not machined onto a tool to ensure that the upper ring is attached to an upper cover plate, positioning the inner side of the ring through the tool, confirming that no problem exists, and welding the upper ring and the upper cover plate;
5. after the preliminary point splicing is completed, hoisting the center support after the point splicing to prepare for welding by a robot;
s3, welding a workpiece, namely hoisting the spliced center support to a welding robot positioner for tooling, clamping and fixing to ensure that the product cannot fall off; and carrying out robot automatic welding on the welding seam needing to be welded. After welding is finished, hoisting the central support product from the positioner;
s4, repairing and polishing the welded center support after the robot finishes automatic welding, and meanwhile, manually repairing and welding the area which cannot be welded by the robot to ensure that the drawing requirement is met;
s5, machining and clamping, namely hoisting the product onto a tool on machining equipment, and positioning according to a positioning reference on the tool (in the X \ Y \ Z direction) to ensure that no gap exists between the product and the positioning reference;
and S6, performing machining operation, namely milling and punching, fixedly installing the tool on a machining platform of a machining center, automatically replacing a milling cutter by the machining center, milling the welding positions of the hoisting center support and the upper ring of the center support, flattening the surface, replacing a hole turning cutter, turning the upper ring of the center support, and finishing machining after the hole is punched.
2. The machining process of the middle-sized excavator lower frame revolution surface all-in-one machine according to claim 1, characterized in that: the welding parameters include welding current 160-180A, voltage 22-23.2V, welding speed 8-12 mm/s and protective gas flow 10-12L/min.
3. The machining process of the middle-sized excavator lower frame revolution surface all-in-one machine according to claim 1, characterized in that: the machining center is a large-scale machining center.
4. The machining process of the middle-sized excavator lower frame revolution surface all-in-one machine according to claim 1, characterized in that: before welding, the welding seam and its periphery are ground by bowl brush, after welding, the greasy dirt on the surface is removed by wiping paper of alcohol to prevent the generation of defect.
5. The machining process of the middle-sized excavator lower frame revolution surface all-in-one machine according to claim 1, characterized in that: and cleaning black ash on the surface of the welding seam by using a bowl brush during post-welding treatment, and polishing the ultrahigh, arcing and arc-closing defects of the welding seam by using a rotary file.
6. The machining process of the middle-sized excavator lower frame revolution surface all-in-one machine according to claim 1, characterized in that: the tool comprises a bottom plate, a central stand column arranged on the bottom plate, three groups of auxiliary stand columns which are arranged around the central stand column respectively in an equiaxial mode, base plates arranged on the central stand column and the auxiliary stand columns, an axial limiting seat arranged at the front end of the bottom plate, and a pressing block limiting mechanism arranged on the side edge of the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599166.XA CN113385888B (en) | 2021-05-31 | 2021-05-31 | Machining process of lower frame and rotating surface integrated machine of medium-sized excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599166.XA CN113385888B (en) | 2021-05-31 | 2021-05-31 | Machining process of lower frame and rotating surface integrated machine of medium-sized excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113385888A true CN113385888A (en) | 2021-09-14 |
| CN113385888B CN113385888B (en) | 2024-01-19 |
Family
ID=77619673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110599166.XA Active CN113385888B (en) | 2021-05-31 | 2021-05-31 | Machining process of lower frame and rotating surface integrated machine of medium-sized excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113385888B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110164982A1 (en) * | 2010-01-06 | 2011-07-07 | General Electric Company | Apparatus and method for a low distortion weld for rotors |
| CN102848140A (en) * | 2012-08-01 | 2013-01-02 | 龙工（上海）挖掘机制造有限公司 | Machining method for engine chassis of small excavator |
| CN106425336A (en) * | 2016-12-21 | 2017-02-22 | 安徽金大进重工机床有限公司 | Machining process of large hydraulic plate shear rack |
| CN107584250A (en) * | 2017-09-01 | 2018-01-16 | 济宁东源机械制造有限公司 | The production technology and production frock of bull-dozer 3D benchmark cantilever design wing plates |
| CN110919138A (en) * | 2019-12-18 | 2020-03-27 | 南京雷尔伟新技术股份有限公司 | Full-automatic welding device and process for spring cylinder and brake hanging seat |
| CN111730290A (en) * | 2020-06-24 | 2020-10-02 | 佰源(山东)机械制造有限公司 | Excavator upper frame tool and assembling method |
-
2021
- 2021-05-31 CN CN202110599166.XA patent/CN113385888B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110164982A1 (en) * | 2010-01-06 | 2011-07-07 | General Electric Company | Apparatus and method for a low distortion weld for rotors |
| CN102848140A (en) * | 2012-08-01 | 2013-01-02 | 龙工（上海）挖掘机制造有限公司 | Machining method for engine chassis of small excavator |
| CN106425336A (en) * | 2016-12-21 | 2017-02-22 | 安徽金大进重工机床有限公司 | Machining process of large hydraulic plate shear rack |
| CN107584250A (en) * | 2017-09-01 | 2018-01-16 | 济宁东源机械制造有限公司 | The production technology and production frock of bull-dozer 3D benchmark cantilever design wing plates |
| CN110919138A (en) * | 2019-12-18 | 2020-03-27 | 南京雷尔伟新技术股份有限公司 | Full-automatic welding device and process for spring cylinder and brake hanging seat |
| CN111730290A (en) * | 2020-06-24 | 2020-10-02 | 佰源(山东)机械制造有限公司 | Excavator upper frame tool and assembling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113385888B (en) | 2024-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111962069B (en) | Deformed high-temperature alloy and stainless steel gas compressor rotor blade tip repairing method and tool | |
| CN115401421B (en) | Preparation method of multi-connected turbine guide vane | |
| CN101885100A (en) | Nickel-chromium-molybdenum alloy automatic surfacing technology for diesel engine cylinder head for ship | |
| CN109434348B (en) | Large-scale equipment supporting end cover plate reverse deformation tool and reverse deformation process | |
| CN112676764A (en) | Portable online repair remanufacturing equipment and method based on arc fusion deposition | |
| CN211540016U (en) | Be applied to automatic weld's frock clamp | |
| CN112847128A (en) | Welding seam grinding device based on six robots | |
| CN113385888A (en) | Machining process for lower frame revolution surface all-in-one machine of medium excavator | |
| CN113319433B (en) | Automatic roller welding production line and roller production method | |
| CN115971580B (en) | Building aluminum profile groove cutting device | |
| CN109128506B (en) | Aluminum alloy laser self-melting welding process without adding shielding gas | |
| CN216780809U (en) | Irregular complex panel beating appearance welding position frock of accurate medical equipment | |
| CN114131925A (en) | Spatial position forming method and device based on additive manufacturing | |
| CN211728277U (en) | Mechanical arm for metal plate welding robot | |
| CN113681238A (en) | Electrophoretic coating process for automobile parts | |
| CN112518183A (en) | Iron accessory robot welding equipment | |
| CN114473270A (en) | Assembly welding method for pipe seat on positioning-free table | |
| CN220427310U (en) | Welding clamping device | |
| CN220217783U (en) | Polishing device for polishing edge burrs of cover plate of water purifier with high precision | |
| CN213410919U (en) | Inner gantry welding tool | |
| CN111408898A (en) | Welding tool for garbage compression box and manufacturing method of welding tool for garbage compression box | |
| CN211219073U (en) | Cutting profiling tool | |
| CN114473149A (en) | Assembly welding method for lower pipe seat without positioning table | |
| CN217799683U (en) | Laser welding machine | |
| CN210937468U (en) | Quick pin cutting machine for bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |