CN113210998A - Welding platform for mechanical production - Google Patents
Welding platform for mechanical production Download PDFInfo
- Publication number
- CN113210998A CN113210998A CN202110539536.0A CN202110539536A CN113210998A CN 113210998 A CN113210998 A CN 113210998A CN 202110539536 A CN202110539536 A CN 202110539536A CN 113210998 A CN113210998 A CN 113210998A
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- welding
- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding platform for mechanical production, which comprises a supporting seat and a welding table rotatably arranged above the supporting seat, wherein an upright post is fixedly connected to the center of the top of the welding table, a pipe is movably sleeved on the outer side of the upright post, a positioning and fixing mechanism for positioning the inner wall of the pipe is arranged on the upright post, and a rotation adjusting mechanism for rotating the welding table is arranged on the supporting seat. According to the invention, the inner wall of the pipe is positioned and fixed by outwards moving the positioning bulge, and the positioning and fixing are more stable, so that the subsequent welding is facilitated, the trouble that the pipe needs to be fixed from the outside of the pipe and the positioning and fixing position of another part of the pipe needs to be changed again when the pipe is positioned in the prior art is avoided, the time required for positioning is saved, the integral welding efficiency is improved, and meanwhile, the welding angle of the pipe can be conveniently adjusted according to actual requirements, so that the welding is more convenient.
Description
Technical Field
The invention relates to the technical field of mechanical production, in particular to a welding platform for mechanical production.
Background
The mechanical production process refers to the entire process of making a product from raw materials (or semi-finished products). For mechanical production, including transportation and storage of raw materials, preparation of production, manufacturing of blanks, processing and heat treatment of parts, assembly and debugging of products, painting and packaging, and the like, parts are often welded on the outer part of a pipe during mechanical production.
At present, the welding of the pipe during the mechanical production is mostly carried out after the pipe is clamped and fixed from the outside. However, the positioning and fixing of the pipe during welding are all fixed from the outside, so that the fixed outer wall is often required to be welded, and then another part of the pipe needs to be fixed again, which is not only troublesome, but also wastes much time required for positioning and fixing, and meanwhile, the welding angle of the pipe is inconvenient to adjust, increases the trouble during welding, and is difficult to meet the existing use requirements, so that a welding platform is required to solve the problems.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a welding platform for mechanical production.
The invention provides a welding platform for mechanical production, which comprises a supporting seat and a welding table rotatably arranged above the supporting seat, wherein an upright post is fixedly connected to the center of the top of the welding table, a pipe is movably sleeved on the outer side of the upright post, a positioning and fixing mechanism for positioning the inner wall of the pipe is arranged on the upright post, and a rotation adjusting mechanism for rotating the welding table is arranged on the supporting seat;
the positioning and fixing mechanism comprises a motor cavity arranged on the stand column and a containing cavity positioned above the motor cavity, a stepping motor is fixedly arranged on the inner wall of the bottom of the motor cavity, the output end of the stepping motor rotates and extends into the containing cavity and is fixedly connected with a double-screw rod, the top end of the double-screw rod is rotatably arranged on the inner wall of the top of the containing cavity, the upper part and the lower part of the outer wall of the double-screw rod are respectively provided with an external thread, two external threads of the outer wall of the double-screw rod are respectively sleeved with a lifting cone through threads, two sides of the lifting cone are respectively slidably arranged on the inner walls of two sides of the containing cavity along the vertical direction, trapezoidal blocks are movably arranged on the inclined surfaces of two sides of the lifting cone, one side of each trapezoidal block close to the inclined surface of the lifting cone is provided with a rolling ball in a propping and rolling contact manner, and the outer sides of the trapezoidal blocks are fixedly provided with positioning bulges, the positioning bulge movably penetrates through the outer part of the upright post and abuts against and positions and fixes the inner wall of the pipe, a guide sleeve is fixedly connected onto the trapezoidal block through a connecting block, a guide post is fixedly connected onto the outer wall of the accommodating cavity, the guide sleeve is sleeved on the guide post in a sliding manner along the horizontal direction, and a reset spring sleeved on the guide post is fixedly connected between the guide sleeve and the outer wall of the accommodating cavity;
rotatory adjustment mechanism is including locating the installation cavity on the supporting seat, and the fixedly connected with pivot of bottom center department of welding bench, the bottom of pivot rotate extend to the installation cavity in and fixed the cup joint have the gear, be equipped with the mounting groove on the right side inner wall of installation cavity, fixed mounting has hydraulic telescoping cylinder in the mounting groove, hydraulic telescoping cylinder's output fixedly connected with spur rack, and the spur rack meshes with the gear mutually.
Preferably, the thread directions of the two external threads are opposite; the conical heads of the two lifting cones are oppositely arranged.
Preferably, a threaded hole is formed in the lifting cone, and the external thread on the outer wall of the double-screw rod is in threaded connection with the threaded hole in the lifting cone.
Preferably, the two sides of the lifting cone are fixedly connected with vertical sliding blocks, vertical sliding rails are fixedly arranged on the inner walls of the two sides of the containing cavity, and the vertical sliding blocks are slidably mounted on the vertical sliding rails along the vertical direction.
Preferably, the guide sleeve is a rectangular sleeve, the guide column is a rectangular column, and a limiting block is fixedly arranged at the inner end of the guide column.
Preferably, a through hole is formed in the inner wall of the outer side of the containing cavity, and the positioning protrusion penetrates through the through hole in a movable mode.
Preferably, a plurality of supporting rolling balls which are uniformly arranged in an annular shape are arranged on the circumferential edge of the bottom of the welding table in a rolling mode, and the bottom sides of the supporting rolling balls are supported on the upper surface of the supporting seat in a rolling mode.
Preferably, a first bearing is fixedly sleeved on the inner wall of the top of the mounting cavity, and the rotating shaft is rotatably mounted on the first bearing; the inner wall of the top of the motor cavity is fixedly sleeved with a second bearing, and an output shaft of the stepping motor is rotatably arranged on the second bearing.
Preferably, the output end of the stepping motor is fixedly connected with the bottom end of the double-screw rod through a coupler.
The invention has the beneficial effects that:
according to the invention, the lifting cone can be in opposite thread transmission on the double screw rods, so that the inclined surface of the lifting cone can extrude balls on the trapezoidal block, and the trapezoidal block can drive the positioning protrusions to move outwards and perform tight positioning and fixing on the inner wall of the pipe after being extruded; the positioning bulge is in a convex shape, so that the inner wall of the pipe can be prevented from sliding after being fixed, the pipe can be positioned and fixed more stably for subsequent welding, the trouble that the pipe needs to be fixed from the outside of the pipe and the clamping and fixing position of the other part of the pipe needs to be changed again when the pipe is positioned in the prior art is avoided, the time required by positioning is saved, and the integral welding efficiency is improved;
according to the invention, the straight rack is driven to move left and right through the expansion of the output end of the hydraulic expansion cylinder, and the straight rack is meshed with the gear for transmission fit when moving left and right, so that the gear can rotate forwards or backwards, and the rotating shaft, the welding table, the upright post and the whole pipe are driven to rotate forwards or backwards when the gear rotates, so that the welding position of the pipe can be changed, the welding angle of the pipe can be conveniently adjusted according to the actual welding requirement, the welding is more convenient, and the use requirement of the existing welding is further met;
in summary, according to the welding platform for mechanical production, the inner wall of the pipe is positioned and fixed by the outward movement of the positioning protrusion, and the positioning protrusion is in the shape of the protrusion, so that the inner wall of the pipe can be prevented from sliding after being fixed, the pipe can be positioned and fixed more stably, subsequent welding is facilitated, the trouble that the pipe needs to be fixed from the outside of the pipe and the positioning and fixing position of another part of the pipe needs to be changed again when the pipe is positioned in the prior art is avoided, the time required for positioning is saved, the integral welding efficiency is improved, the welding angle of the pipe can be adjusted conveniently according to actual needs, and the welding is facilitated.
Drawings
FIG. 1 is a schematic view of a welding platform for mechanical production according to the present invention after positioning a pipe;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the interior of the column of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;
fig. 5 is a schematic view of the present invention in a state where the pipe is not positioned.
In the figure: the device comprises a supporting seat 1, a welding table 2, an upright post 3, a motor cavity 30, a stepping motor 31, a double-screw rod 32, external threads 321, a lifting cone 33, a threaded hole 331, a trapezoidal block 34, a ball 341, a positioning protrusion 342, a through hole 35, a storage cavity 36, a vertical sliding block 37, a vertical sliding rail 38, a second bearing 39, a limiting block 310, a coupler 311, a return spring 312, a guide sleeve 313, a guide post 314, a pipe 4, an installation cavity 5, an installation groove 6, a hydraulic telescopic cylinder 7, a straight rack 8, a gear 9, a rotating shaft 10, a first bearing 11 and a supporting rolling ball 12.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Examples
Referring to fig. 1-5, the embodiment provides a welding platform for mechanical production, including a supporting seat 1 and a welding table 2 rotatably installed above the supporting seat 1, wherein an upright column 3 is fixedly connected to a central position of a top of the welding table 2, a pipe 4 is movably sleeved outside the upright column 3, a positioning and fixing mechanism for positioning an inner wall of the pipe 4 is arranged on the upright column 3, and a rotation adjusting mechanism for rotating the welding table 2 is arranged on the supporting seat 1;
the positioning and fixing mechanism comprises a motor cavity 30 arranged on the upright column 3 and a containing cavity 36 positioned above the motor cavity 30, a stepping motor 31 is fixedly arranged on the inner wall of the bottom of the motor cavity 30, the output end of the stepping motor 31 rotates and extends into the containing cavity 36 and is fixedly connected with a double-screw rod 32, the top end of the double-screw rod 32 is rotatably arranged on the inner wall of the top of the containing cavity 36, the upper part and the lower part of the outer wall of the double-screw rod 32 are respectively provided with an external thread 321, two external threads 321 on the outer wall of the double-screw rod 32 are respectively sleeved with a lifting cone 33 through threads, two sides of the lifting cone 33 are respectively arranged on the inner walls of two sides of the containing cavity 36 in a sliding manner along the vertical direction, trapezoidal blocks 34 are movably arranged at the inclined planes at two sides of the lifting cone 33, a ball 341 is arranged on one side of the trapezoidal block 34 close to the inclined plane of the lifting cone 33 in a rolling manner, and the trapezoidal blocks 34 are in contact with the inclined plane of the lifting cone 33 through the ball 341 in an offset rolling manner, a positioning protrusion 342 is fixedly arranged on the outer side of the trapezoidal block 34, the positioning protrusion 342 movably penetrates the outer part of the upright post 3 and abuts against and is fixedly positioned on the inner wall of the tube 4, a guide sleeve 313 is fixedly connected to the trapezoidal block 34 through a connecting block, a guide post 314 is fixedly connected to the outer wall of the accommodating cavity 36, the guide sleeve 313 is sleeved on the guide post 314 in a sliding manner along the horizontal direction, and a return spring 312 sleeved on the guide post 314 is fixedly connected between the guide sleeve 313 and the outer wall of the accommodating cavity 36;
rotatory adjustment mechanism is including locating installation cavity 5 on supporting seat 1, and the fixedly connected with pivot 10 of bottom center department of weld bench 2, and the bottom of pivot 10 is rotated and is extended to in the installation cavity 5 and the fixed gear 9 that has cup jointed, is equipped with mounting groove 6 on the right side inner wall of installation cavity 5, and fixed mounting has hydraulic telescoping cylinder 7 in the mounting groove 6, and the output fixedly connected with spur rack 8 of hydraulic telescoping cylinder 7, and spur rack 8 meshes with gear 9 mutually. According to the welding platform for mechanical production, the inner wall of the pipe 4 is positioned and fixed through outward movement of the positioning protrusion 342, the positioning and fixing are more stable, the trouble that the pipe needs to be fixed from the outside of the pipe and the positioning and fixing position needs to be changed again for another part of the pipe when the pipe is positioned in the prior art is avoided, the time required for positioning is saved, the integral welding efficiency is improved, and meanwhile, the welding angle of the pipe can be conveniently adjusted according to actual requirements.
Further, the thread directions of the two external threads 321 are opposite; the heads of the two lifting cones 33 are arranged opposite to each other.
Further, a threaded hole 331 is formed in the lifting cone 33, and the external thread 321 on the outer wall of the double screw 32 is in threaded connection with the threaded hole 331 on the lifting cone 33.
Further, the two sides of the lifting cone 33 are fixedly connected with vertical sliding blocks 37, the inner walls of the two sides of the accommodating cavity 36 are fixedly provided with vertical sliding rails 38, and the vertical sliding blocks 37 are slidably mounted on the vertical sliding rails 38 along the vertical direction.
Further, the guide sleeve 313 is a rectangular sleeve, the guide post 314 is a rectangular post, and a limit block 310 is fixedly arranged at the inner end of the guide post 314.
Furthermore, a through hole 35 is formed in the outer inner wall of the receiving cavity 36, and the positioning protrusion 342 movably penetrates through the through hole 35.
Further, a plurality of supporting rolling balls 12 which are uniformly arranged in a ring shape are arranged on the circumferential edge of the bottom of the welding table 2 in a rolling way, and the bottom sides of the supporting rolling balls 12 are supported on the upper surface of the supporting seat 1 in a rolling way.
Furthermore, a first bearing 11 is fixedly sleeved on the inner wall of the top of the mounting cavity 5, and the rotating shaft 10 is rotatably mounted on the first bearing 11; a second bearing 39 is fixedly sleeved on the inner wall of the top of the motor cavity 30, and an output shaft of the stepping motor 31 is rotatably mounted on the second bearing 39.
Further, the output end of the stepping motor 31 is fixedly connected with the bottom end of the double-screw rod 32 through a coupler 311.
In this embodiment, the tubular product welding in-process when mechanical production is fixed through fixing a position tubular product internal diameter, during its specific positioning: the tube 4 is sleeved outside the column 3 and supported on the welding table 2, then the output end of the stepping motor 31 drives the double-screw rod 32 to rotate, the double-screw rod 32 rotates relative to the threaded hole 331 on the lifting cone 33 through the external thread 321, because the lifting cone 33 also performs vertical sliding guide on the vertical sliding rail 38 through the vertical sliding block 37, in this way, during the double-screw rod 32, the lifting cone 33 can perform thread transmission on the external thread 321 of the double-screw rod 32 through the threaded hole 331, and the spiral directions of the two external threads 321 on the double-screw rod 32 are opposite, so that the lifting cone 33 can perform opposite thread transmission on the double-screw rod 32, further the inclined surface of the lifting cone 33 can extrude the ball 341 on the trapezoidal block 34, and the trapezoidal block 34 after being extruded also drives the positioning protrusion 342 to move outwards and perform tight positioning and fixing on the inner wall of the tube 4 (as shown in fig. 1, As shown in fig. 3), at this time, when the trapezoidal block 34 moves outwards, the guide sleeve 313 is driven to move outwards and compress the return spring 312, and the positioning protrusion 342 is in a protrusion shape, so that the inner wall of the pipe 4 can be prevented from sliding after being fixed, and the pipe 4 can be more stably positioned and fixed, so that subsequent welding is facilitated, the trouble that the pipe needs to be fixed from the outside of the pipe and the clamping and fixing position needs to be changed again for another part of the pipe when the pipe is welded and positioned in the past is avoided, the time required for positioning is saved, and the whole welding efficiency is improved;
in this example, when welding angle need be changed among the welding process, then utilize the flexible of 7 output ends of hydraulic telescoping cylinder to drive spur rack 8 and remove, and spur rack 8 removes when removing with gear 9 meshing transmission cooperation, can make gear 9 corotation or reversal, gear 9 drives pivot 10 and welding bench 2 again when rotatory, stand 3, the whole corotation of tubular product 4 or reversal, can change the welding position of tubular product 4 like this, make the welding angle of tubular product be convenient for adjust according to the needs when actual welding, make during the welding more convenient, current welded use needs have further been satisfied.
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 (9)
1. The welding platform for mechanical production comprises a supporting seat (1) and a welding table (2) rotatably mounted above the supporting seat (1), and is characterized in that an upright post (3) is fixedly connected to the center of the top of the welding table (2), a pipe (4) is movably sleeved on the outer side of the upright post (3), a positioning and fixing mechanism for positioning the inner wall of the pipe (4) is arranged on the upright post (3), and a rotation adjusting mechanism for rotating the welding table (2) is arranged on the supporting seat (1);
the positioning and fixing mechanism comprises a motor cavity (30) arranged on the upright post (3) and a containing cavity (36) positioned above the motor cavity (30), a stepping motor (31) is fixedly arranged on the inner wall of the bottom of the motor cavity (30), the output end of the stepping motor (31) rotates and extends into the containing cavity (36) and is fixedly connected with a double-screw rod (32), the top end of the double-screw rod (32) is rotatably arranged on the inner wall of the top of the containing cavity (36), the upper part and the lower part of the outer wall of the double-screw rod (32) are respectively provided with an external thread (321), two external threads (321) on the outer wall of the double-screw rod (32) are respectively sleeved with a lifting cone (33) through threads, two sides of the lifting cone (33) are respectively slidably arranged on the inner walls of two sides of the containing cavity (36) along the vertical direction, inclined planes of two sides of the lifting cone (33) are respectively and movably provided with a trapezoidal block (34), a ball (341) is arranged on one side, close to the inclined surface of the lifting cone (33), of the trapezoidal block (34) in a rolling mode, the trapezoidal block (34) is in abutting rolling contact with the inclined surface of the lifting cone (33) through the ball (341), a positioning protrusion (342) is fixedly arranged on the outer side of the trapezoidal block (34), the positioning protrusion (342) movably penetrates through the outer portion of the upright column (3) and abuts against and is fixedly positioned on the inner wall of the pipe (4), a guide sleeve (313) is fixedly connected onto the trapezoidal block (34) through a connecting block, a guide column (314) is fixedly connected onto the outer wall of the accommodating cavity (36), the guide sleeve (313) is sleeved on the guide column (314) in a sliding mode along the horizontal direction, and a reset spring (312) sleeved on the guide column (314) is fixedly connected between the guide sleeve (313) and the outer wall of the;
rotatory adjustment mechanism is including locating installation cavity (5) on supporting seat (1), fixedly connected with pivot (10) are located at the bottom center of welding bench (2), the bottom of pivot (10) is rotated and is extended to installation cavity (5) in and the fixed gear (9) of having cup jointed, be equipped with mounting groove (6) on the right side inner wall of installation cavity (5), fixed mounting has hydraulic telescoping cylinder (7) in mounting groove (6), the output fixedly connected with spur rack (8) of hydraulic telescoping cylinder (7), and spur rack (8) and gear (9) mesh mutually.
2. Welding platform for machine production according to claim 1, characterized in that the two external threads (321) have opposite thread directions; the conical heads of the two lifting cones (33) are arranged oppositely.
3. The welding platform for machine production according to claim 1, wherein the lifting cone (33) is provided with a threaded hole (331), and the external thread (321) on the outer wall of the double-screw rod (32) is in threaded connection with the threaded hole (331) on the lifting cone (33).
4. The welding platform for machine production according to claim 1, wherein vertical sliding blocks (37) are fixedly connected to two sides of the lifting cone (33), vertical sliding rails (38) are fixedly arranged on inner walls of two sides of the containing cavity (36), and the vertical sliding blocks (37) are slidably mounted on the vertical sliding rails (38) in the vertical direction.
5. The welding platform for mechanical production as claimed in claim 1, wherein the guide sleeve (313) is a rectangular sleeve, the guide column (314) is a rectangular column, and a limit block (310) is fixedly arranged at the inner end of the guide column (314).
6. The welding platform for mechanical production as claimed in claim 1, wherein a through hole (35) is formed in an outer inner wall of the receiving cavity (36), and the positioning protrusion (342) movably penetrates through the through hole (35).
7. The welding platform for mechanical production as claimed in claim 1, wherein a plurality of supporting rolling balls (12) are uniformly arranged in a ring shape and are roll-mounted on the circumferential edge of the bottom of the welding table (2), and the bottom sides of the supporting rolling balls (12) are roll-supported on the upper surface of the supporting base (1).
8. The welding platform for machine production according to claim 1, wherein a first bearing (11) is fixedly sleeved on the inner wall of the top of the mounting cavity (5), and the rotating shaft (10) is rotatably mounted on the first bearing (11); a second bearing (39) is fixedly sleeved on the inner wall of the top of the motor cavity (30), and an output shaft of the stepping motor (31) is rotatably arranged on the second bearing (39).
9. The welding platform for machine production according to claim 1, wherein the output end of the stepping motor (31) is fixedly connected with the bottom end of the double-screw rod (32) through a coupling (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539536.0A CN113210998A (en) | 2021-05-18 | 2021-05-18 | Welding platform for mechanical production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539536.0A CN113210998A (en) | 2021-05-18 | 2021-05-18 | Welding platform for mechanical production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113210998A true CN113210998A (en) | 2021-08-06 |
Family
ID=77092553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110539536.0A Withdrawn CN113210998A (en) | 2021-05-18 | 2021-05-18 | Welding platform for mechanical production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113210998A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850743A (en) * | 2022-07-06 | 2022-08-05 | 烟台市特种设备检验研究院 | Bevel pipe welding equipment |
| CN115255797A (en) * | 2022-08-31 | 2022-11-01 | 湖北万柯汽车零部件有限公司 | Welding tool for automobile axle housing |
| CN116393902A (en) * | 2023-05-29 | 2023-07-07 | 山东三宇神工机械有限公司 | Positioning device for tailor-welding of loader hood |
| CN116833669A (en) * | 2023-08-15 | 2023-10-03 | 杭州人通管业有限公司 | Pipe orifice butt joint calibration auxiliary workstation for pipeline assembly |
-
2021
- 2021-05-18 CN CN202110539536.0A patent/CN113210998A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850743A (en) * | 2022-07-06 | 2022-08-05 | 烟台市特种设备检验研究院 | Bevel pipe welding equipment |
| CN114850743B (en) * | 2022-07-06 | 2022-09-09 | 烟台市特种设备检验研究院 | Bevel pipe welding equipment |
| CN115255797A (en) * | 2022-08-31 | 2022-11-01 | 湖北万柯汽车零部件有限公司 | Welding tool for automobile axle housing |
| CN115255797B (en) * | 2022-08-31 | 2024-02-13 | 湖北万柯汽车零部件有限公司 | Welding fixture for automobile axle housing |
| CN116393902A (en) * | 2023-05-29 | 2023-07-07 | 山东三宇神工机械有限公司 | Positioning device for tailor-welding of loader hood |
| CN116393902B (en) * | 2023-05-29 | 2023-12-01 | 山东三宇神工机械有限公司 | Positioning device for tailor-welding of loader hood |
| CN116833669A (en) * | 2023-08-15 | 2023-10-03 | 杭州人通管业有限公司 | Pipe orifice butt joint calibration auxiliary workstation for pipeline assembly |
| CN116833669B (en) * | 2023-08-15 | 2024-03-19 | 杭州人通管业有限公司 | Pipe orifice butt joint calibration auxiliary workstation for pipeline assembly |
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Application publication date: 20210806 |
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| WW01 | Invention patent application withdrawn after publication |