CN111085707A - Auxiliary tool and method for drilling and riveting of chassis boundary beam and casting - Google Patents
Auxiliary tool and method for drilling and riveting of chassis boundary beam and casting Download PDFInfo
- Publication number
- CN111085707A CN111085707A CN202010000234.1A CN202010000234A CN111085707A CN 111085707 A CN111085707 A CN 111085707A CN 202010000234 A CN202010000234 A CN 202010000234A CN 111085707 A CN111085707 A CN 111085707A
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- casting
- riveting
- drilling
- positioning
- boundary beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
Abstract
The invention provides a novel drilling and riveting auxiliary tool and a method thereof, which aim to purposefully solve the problem of riveting the aluminum alloy chassis boundary beam and the casting, so as to realize a drilling and riveting process with strong practicability, high drilling precision and high machining efficiency, effectively solve the problems that the existing chassis boundary beam is difficult to drill accurately and the quality of a product after rivet pulling is unstable, reduce the field machining working strength and improve the production efficiency. The auxiliary tool comprises a supporting plate, an F-shaped clamping bar, a supporting frame, a positioning supporting block and a magnetic drill. The supporting plate is of a flat plate structure, the cross section of the supporting frame is L-shaped, and the positioning supporting block is provided with at least two continuous T-shaped structures which are connected into a whole. The supporting frame is provided with a through groove with a rectangular cross section between two right-angle folded edges, and the outer edge of the edge beam is propped into the through groove.
Description
Technical Field
The invention relates to an auxiliary tool for drilling and riveting a chassis boundary beam and a casting of an aluminum alloy motor train unit and improvement of a riveting process of the auxiliary tool, and belongs to the field of rail vehicle design.
Background
With the rapid development of the motor train unit technology and the improvement of the train running speed, the design of the train body structure and the assembly processing technology are continuously optimized and improved, and the design of the train body structure is mature day by day.
The underframe is one of important parts of the aluminum alloy car body, is directly connected with a bogie and plays a basic role in connection and bearing distribution with great weight. The accurate positioning size of the anti-rolling mounting seat, which is an important accessory on the boundary beam, can directly influence the quality and the safety of the vehicle body, so that higher requirements are provided for the processing position and the size of the anti-rolling mounting seat, the product quality and other performances.
The existing chassis boundary beam accessory-anti-rolling mounting seat of the aluminum alloy vehicle body is an aluminum alloy structure directly welded on a boundary beam, is influenced by welding deformation factors, is difficult to adjust and repair, and is difficult to ensure the requirement of dimensional tolerance. The novel improved design is characterized in that the anti-rolling mounting seat is changed into a casting structure from an aluminum alloy structure, and the casting is fixed on the boundary beam through rivets in a mode of on-site manual drilling, so that the design structure of the boundary beam, the mounting space position of the anti-rolling mounting seat, manual drilling and other artificial uncertain factors directly determine the difficulty of on-site drilling and the accuracy of drilling.
For example, in a certain aluminum alloy urban rail train designed and used by the applicant at present, the anti-rolling mounting seat is a casting structure, and the spatial positions of the boundary beam structure and the anti-rolling mounting seat make the anti-rolling mounting seat difficult to clamp and fix on site; meanwhile, due to the influence of artificial uncertain factors such as the spatial installation position of the anti-rolling installation seat, manual operation and the like, on one hand, the size of the aluminum alloy boundary beam profile matched hole cannot meet the tolerance size requirement required by riveting, namely, the drilling accuracy cannot be guaranteed; on the other hand, the manual on-site drill matching has high working strength and low production efficiency; in addition, the riveting process has unreasonable steps, the riveting difficulty is increased, the loosening of rivets or the clearance of the contact surface between a casting and the boundary beam is easily caused, and the product quality cannot be ensured.
In view of this, the present application is specifically made.
Disclosure of Invention
The invention relates to an auxiliary tool and a method for drilling and riveting an edge beam of an underframe and a casting, aiming at solving the problems in the prior art and providing a novel auxiliary tool for drilling and riveting to purposefully solve the problem of riveting the edge beam of the aluminum alloy underframe and the casting, so as to realize a drilling and riveting process with strong practicability, high drilling precision and high machining efficiency, effectively solve the problems that the edge beam of the existing underframe is difficult to drill accurately and the quality of a product after pulling and riveting is unstable, reduce the working strength of field machining and improve the production efficiency.
In order to realize the design purpose, the application provides a novel auxiliary tool for drilling and riveting of the edge beam of the underframe and the casting, which mainly comprises a supporting plate, an F-shaped clamping bar, a supporting frame, a positioning supporting block and a magnetic drill.
The supporting plate is of a flat plate structure, the cross section of the supporting frame is L-shaped, and the positioning supporting block is provided with at least two continuous T-shaped structures which are connected into a whole.
Furthermore, the optimization and improvement scheme that can take is that a through groove with a rectangular cross section is arranged between two right-angle folded edges of the supporting frame, and the outer edge of the edge beam is propped into the through groove.
The specific drilling and riveting positioning structure is that at the lower surface of the edge beam, the supporting plate and the casting are respectively positioned on the lower surface of the edge beam, and the magnetic drill is positioned on the supporting plate; the at least one F-shaped clamping fence is clamped and fixed at the vertical two ends of the upper surface of the supporting plate and the lower surface of the boundary beam, and the at least one F-shaped clamping fence is clamped at the vertical two ends of the casting and the lower surface of the boundary beam;
at the inner inclined plane of the edge beam, the positioning support block and the casting are respectively positioned on the inner inclined plane of the edge beam, the magnetic drill is positioned on the positioning support block, and the support frame is positioned at the outer edge of the lower surface of the edge beam; at least one F-shaped clamping bar is clamped and fixed between the upper surface of the positioning supporting block and the bottom surface of the supporting frame in the vertical direction, and at least one F-shaped clamping bar is clamped at the two vertical ends of the casting and the bottom surface of the supporting frame in the vertical direction.
According to the structural design and the positioning connection mode of the auxiliary tool, the auxiliary tool is designed according to the structural characteristics of the boundary beam and the casting, the positioning reference surface of the magnetic drill can be flexibly converted, the inner inclined surface and the lower surface of the boundary beam are used as the positioning reference surface, the positioning support block is designed in a manner of being parallel to the inner inclined surface of the boundary beam, the support plate is designed in a manner of being parallel to the lower surface of the boundary beam, the casting is respectively clamped and positioned in the lateral direction and the vertical direction, and necessary precondition is provided for the accuracy of mechanical drilling.
The structural design of the positioning support block avoids interference with the casting according to the structure of the edge beam and the shape and size characteristics of the casting, and meets the requirement of magnetic drilling machinery drilling holes on the inner inclined plane of the edge beam on the stroke. The requirements of position dimensional tolerance such as planeness, verticality and the like can be integrally met, and the accuracy of the drilled hole is guaranteed.
On the basis of applying the auxiliary tool for drilling and riveting the edge beam of the underframe and the casting, the application simultaneously provides an improved riveting process method. The method comprises the following implementation steps:
(1) rivet pulling process test;
(2) the boundary beam scribes the size of the casting to be positioned;
(3) matching a casting rivet hole to drill a positioning hole and rivet pulling positioning on the aluminum profile on the lower surface of the side beam;
(4) drilling a positioning hole and rivet pulling positioning for the aluminum profile on the inner inclined surface of the edge beam by matching the casting rivet hole;
(5) and drilling and pulling and riveting the rest positions of the edge beam aluminum profile through the matched casting rivet hole.
Further, before riveting the physical product, a rivet pulling process test is carried out on the rivet so as to carry out process verification on the equipment capacity and the quality of the rivet gun.
Further, a magnetic drill is adopted to match with a casting rivet hole to mechanically drill the edge beam profile.
Respectively drilling and riveting and positioning by using an auxiliary tool, wherein the supporting plate and the casting are respectively positioned on the lower surface of the edge beam at the lower surface of the edge beam, and the magnetic drill is positioned on the supporting plate; the at least one F-shaped clamping fence is clamped and fixed at the vertical two ends of the upper surface of the supporting plate and the lower surface of the boundary beam, and the at least one F-shaped clamping fence is clamped at the vertical two ends of the casting and the lower surface of the boundary beam;
at the inner inclined plane of the edge beam, the positioning support block and the casting are respectively positioned on the inner inclined plane of the edge beam, the magnetic drill is positioned on the positioning support block, and the support frame is positioned at the outer edge of the lower surface of the edge beam; at least one F-shaped clamping bar is clamped and fixed between the upper surface of the positioning supporting block and the bottom surface of the supporting frame in the vertical direction, and at least one F-shaped clamping bar is clamped at the two vertical ends of the casting and the bottom surface of the supporting frame in the vertical direction.
In summary, the auxiliary tool for drilling and riveting the side beam of the underframe and the casting and the method thereof have the advantages and beneficial effects that:
1. aiming at the structural characteristics of the boundary beam and the casting of the existing aluminum alloy motor train unit, the positioning reference surface of the magnetic drill can be flexibly converted through the provided drilling and riveting auxiliary tool, the inner inclined surface and the lower surface of the boundary beam are respectively used as the positioning reference surface, necessary precondition is provided for the accuracy of mechanical drilling, and the auxiliary tool is strong in practicability and flexible to operate.
2. Adopt magnetic drill to match foundry goods rivet hole and carry out mechanical type drilling to the boundary beam section bar, compare manual drilling in the past, avoided the influence of external uncertain interference factor, guaranteed the accurate nature of drilling, reduced working strength, the improvement production efficiency that is showing has guaranteed product quality.
3. The improved process flows of drilling and riveting the edge beam and the casting clearly determine the operation steps of drilling and rivet pulling, greatly ensure the product quality and avoid the repair of the physical product after rivet pulling.
Drawings
FIG. 1 is a schematic view of the location and configuration of the undercarriage edge beam and casting assembly process;
FIG. 2 is a process flow diagram of the drilling and riveting of the boundary beam and the casting;
FIG. 3 is a schematic illustration of a rivet process test;
FIG. 4 is a schematic illustration of the drilling and riveting of the lower surface of the undercarriage edge beam to the casting;
FIG. 5 is a schematic sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic illustration of the drilling and riveting of the inner bevel of the undercarriage edge rail to the casting;
FIG. 7 is a schematic sectional view taken along line B-B of FIG. 6;
FIG. 8 is a schematic diagram showing a structural comparison of the support frame and the positioning support block;
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
In the embodiment 1, the aluminum alloy underframe boundary beam and the anti-rolling mounting seat casting of the intercity railway vehicle are drilled and riveted.
As shown in fig. 1, anti-roll mount 20 is mounted and fixed to a lower sill surface 40 and a sill inner slope 50 by rivets 30 at the near end of a side sill 10 on one side of an underframe (shown with a bolster 60 constituting the underframe and a floor 70 mounted to the underframe).
The structure of the boundary beam 10 is nearly cylindrical and irregular, and the anti-rolling mounting seat 20 adopts an integral machining mode to ensure the standard requirements of the position sizes and the tolerances of a machined rivet hole on a casting, the flatness of the casting, an angle and the like.
The number of rivet holes on the rocker lower surface 40 is 8 and the number of rivet holes on the rocker inner chamfer 50 is 6.
In order to meet the machining precision requirement of the drilling riveting of the side beam of the underframe and the anti-rolling mounting seat, the auxiliary tool mainly comprises a supporting plate 3, an F-shaped clamping bar 4, a supporting frame 6, a positioning supporting block 7 and a magnetic drill 8.
Wherein, the supporting plate 3 has a flat structure;
as shown in FIG. 8, the cross-sectional shape of the support frame 6 is L-shaped, and a cross-section of 4mm is provided between two right-angled folded edges thereof2A rectangular through groove 61, wherein when the support frame 6 is lined outside the edge beam 10, the outer edge of the edge beam 10 is pressed into the through groove 61;
the positioning support block 7 preferably has at least two continuous T-shaped structures which are connected into a whole.
As shown in fig. 4 and 5, the auxiliary tool is applied to the lower surface 40 of the edge beam, the supporting plate 3 and the anti-rolling mounting seat 20 are respectively located on the lower surface 40 of the edge beam, and the magnetic drill 8 is located on the supporting plate 3; two F type card fences 4 are clamped and fixed at the vertical two ends of the upper surface of the supporting plate 3 and the vertical two ends of the lower surface 40 of the boundary beam, and the other two F type card fences 4 are clamped at the vertical two ends of the anti-rolling mounting seat 20 and the vertical two ends of the lower surface 40 of the boundary beam.
As shown in fig. 6 and 7, the auxiliary tool is applied to the inner inclined surface 50 of the edge beam, the positioning support block 7 and the anti-rolling mounting seat 20 are respectively located on the inner inclined surface 50 of the edge beam, the magnetic drill 8 is located on the positioning support block 7, and the support frame 6 is located on the outer edge of the lower surface of the edge beam 10; two F-shaped clamping fences 4 are clamped and fixed between the upper surface of the positioning support block 7 and the bottom surface of the support frame 6 in the vertical direction, and the other F-shaped clamping fence 4 is clamped at two vertical ends of the anti-rolling mounting seat 20 and the bottom surface of the support frame 6 in the vertical direction.
As shown in fig. 2, the casting riveting process method applied to the aluminum alloy underframe edge beam 10 and the anti-rolling mount pad 20 comprises the following implementation steps:
cleaning and painting the riveting area of the edge beam, and continuing the post-process operation after the paint is dried;
performing a rivet process test, as shown in fig. 3, in order to verify the equipment capacity of the rivet gun 80 and the quality of the rivet 30, a simulation object product is required to perform a rivet pulling test, for example, a test plate 1 is used for simulating the material and the wall thickness of an edge beam profile, a test plate 2 is used for simulating the material and the wall thickness of a casting, a rivet hole is added in advance according to the required size of the rivet pulling according to the test plate 1 and the test plate 2, and the two test plates are attached tightly and fixed and then are subjected to rivet pulling by using the rivet gun; after the rivet pulling test is finished, marking information such as a vehicle number, time, an operator and the like on a test plate, facilitating product quality tracing, and performing formal product part rivet pulling operation after the appearance and the size of the rivet are qualified;
on the side beam 10, the anti-side rolling mounting seat 20 is marked according to the positioning size of the drawing, and meanwhile, the distance size of the anti-side rolling mounting seat casting is adjusted through a gasket according to the width size of the bottom frame;
matching the cast rivet hole to drill a positioning hole on the aluminum profile on the lower surface 40 of the boundary beam, as shown in fig. 5, placing the anti-rolling mounting seat 20 on the lower surface 40 of the boundary beam according to the positioning size, and clamping and fixing the anti-rolling mounting seat in the vertical direction by using 2F clamping bars 4; placing the machined supporting plate 3 on the lower surface 40 of the boundary beam close to the casting, and clamping and fixing the supporting plate in the vertical direction by using 2F clamping fences 4; placing the magnetic drill 8 on the supporting plate 3, and after electrifying, under the action of electromagnetic force, adsorbing the magnetic drill 8 on the surface of the supporting plate 3 to complete 2 rivet drilling holes in the area of the lower surface 40 of the edge beam shown in fig. 1; then, carrying out rivet pulling operation on the positioning holes of the lower surface 40 of the edge beam in the clamping state of the F-shaped clamping bar 4, and disassembling all the F-shaped clamping bars 4 clamped on the lower surface 40 of the edge beam after positioning rivet pulling is finished;
matching a cast rivet hole to drill a positioning hole on the aluminum profile of the inner inclined plane 50 of the edge beam, as shown in fig. 7, under the action of a positioning support block 7 and an F-shaped clamping bar 4, clamping and fixing the anti-rolling mounting seat 20 attached to the inner inclined plane 50 of the edge beam so as to avoid the drilling precision being influenced by the vibration caused by the resonance between the magnetic drill 8 and the anti-rolling mounting seat 20 in the drilling process; then, the supporting frame 6 is placed on the inner inclined plane 50 of the boundary beam, the positioning supporting block 7 and the supporting frame 6 are clamped and fixed by 2F-shaped clamping bars 4, the magnetic drill 8 is placed on the supporting frame 6, and after the magnetic drill is electrified, the magnetic drill 8 is adsorbed on the surface of the supporting frame 6 under the action of electromagnetic force, such as 2 rivet holes in the area of the inner inclined plane 50 of the boundary beam shown in fig. 1; finally, performing rivet pulling operation on the positioning hole of the inner inclined plane 50 of the edge beam in the clamping state of the F-shaped clamping bar 4;
continuously matching the rivet holes of the castings with the holes drilled in other areas of the aluminum profile of the inner inclined plane 50 of the boundary beam, wherein the number of the rivet holes is 4; after the riveting operation of the rest holes of the inner inclined plane 50 of the edge beam is completed, the relevant auxiliary tools are disassembled;
continuously matching the cast rivet holes with the drilled holes in other areas of the aluminum profile 40 on the lower surface of the boundary beam, wherein the number of the drilled holes is 6; after the riveting operation of the rest holes on the lower surface 40 of the edge beam is completed, the relevant auxiliary tools are disassembled;
and (5) carrying out size and looseness inspection on the riveted rivet, and transferring to the next procedure after the rivet is qualified.
As mentioned above, the auxiliary tool and the method for drilling and riveting the boundary beam and the casting of the chassis have the advantages that the structural design and the connection mode of the auxiliary tool are strong in practicability, high in accuracy and high in efficiency, and the auxiliary tool is designed according to the structural characteristics of the boundary beam and the casting. The riveting process method is realized by flexibly converting the positioning reference surface of the magnetic drill 8 and taking the inner inclined surface 50 of the edge beam and the lower surface 40 of the edge beam as the positioning reference surfaces respectively, thereby providing necessary preconditions for the accuracy of mechanical drilling; adopt magnetic drill 8 to match foundry goods rivet hole to 10 section bar machinery drilling of boundary beam, compare manual drilling in the past, avoided the influence of external uncertain interference factor, guaranteed the accurate nature of drilling, reduced working strength, apparent improvement production efficiency. The provided process flow of drilling and riveting the boundary beam 10 and the casting clearly defines the operation steps of drilling and rivet pulling, greatly ensures the product quality and avoids the repair of the physical product after rivet pulling;
comprehensively, the auxiliary tool is strong in practicability and flexible to operate, and the requirements on the precision and the position size of the drilling hole are greatly guaranteed; meanwhile, the application provides a certain experience reference for drilling and riveting other similar parts.
As mentioned above, the contents of the solutions given in the drawings and the description are still included in the protection scope of the solution of the present application, unless the structural solutions of the present application are deviated.
Claims (7)
1. The utility model provides a be used for chassis boundary beam and foundry goods drilling riveted auxiliary fixtures which characterized in that: comprises a supporting plate (3), an F-shaped clamping bar (4), a supporting frame (6), a positioning supporting block (7) and a magnetic drill (8);
the supporting plate (3) is of a flat plate structure, the cross section of the supporting frame (6) is L-shaped, and the positioning supporting block (7) is provided with at least two continuous T-shaped structures which are connected into a whole.
2. The auxiliary tool for drilling and riveting the edge beam of the underframe and the casting according to claim 1, wherein the auxiliary tool comprises: and a through groove (61) with a rectangular section is arranged between the two right-angle folded edges of the supporting frame (6), and the outer edge of the edge beam (10) is pressed into the through groove (61).
3. The auxiliary tool for drilling and riveting the edge beam of the underframe and the casting according to claim 1 or 2, wherein the auxiliary tool comprises: at the lower surface (40) of the edge beam, the supporting plate (3) and the casting are respectively positioned on the lower surface (40) of the edge beam, and the magnetic drill (8) is positioned on the supporting plate (3); at least one F-shaped clamping fence (4) is clamped and fixed at the vertical two ends of the upper surface of the supporting plate (3) and the lower surface (40) of the boundary beam, and at least one F-shaped clamping fence (4) is clamped at the vertical two ends of the casting and the lower surface (40) of the boundary beam;
at the inner inclined plane (50) of the boundary beam, the positioning support block (7) and the casting are respectively positioned on the inner inclined plane (50) of the boundary beam, the magnetic drill (8) is positioned on the positioning support block (7), and the support frame (6) is positioned at the outer edge of the lower surface of the boundary beam (10); at least one F-shaped clamping fence (4) is clamped and fixed between the upper surface of the positioning supporting block (7) and the bottom surface of the supporting frame (6) in the vertical direction, and at least one F-shaped clamping fence (4) is clamped at the two vertical ends of the bottom surfaces of the casting and the supporting frame (6).
4. The riveting process method for the auxiliary tool for drilling and riveting the edge beam of the underframe and the casting according to the claims 1 to 3 is characterized in that: comprises the following implementation steps of the method,
(1) rivet pulling process test;
(2) the boundary beam scribes the size of the casting to be positioned;
(3) matching a casting rivet hole to drill a positioning hole and rivet pulling positioning on the aluminum profile on the lower surface of the side beam;
(4) drilling a positioning hole and rivet pulling positioning for the aluminum profile on the inner inclined surface of the edge beam by matching the casting rivet hole;
(5) and drilling and pulling and riveting the rest positions of the edge beam aluminum profile through the matched casting rivet hole.
5. The riveting process method for the aluminum alloy chassis boundary beam and the casting as recited in claim 4, wherein: before riveting the physical product, performing a riveting process test on the rivet to perform process verification on the equipment capability and the quality of the rivet gun.
6. The riveting process method for the aluminum alloy chassis boundary beam and the casting as recited in claim 5, characterized in that: and a magnetic drill (8) is adopted to match with the rivet hole of the casting to mechanically drill the edge beam profile.
7. The riveting process method for the aluminum alloy chassis boundary beam and the casting as recited in claim 5, characterized in that: the auxiliary tool is used for respectively drilling and riveting and positioning, the supporting plate (3) and the casting are respectively positioned on the lower surface (40) of the edge beam at the lower surface (40) of the edge beam, and the magnetic drill (8) is positioned on the supporting plate (3); at least one F-shaped clamping fence (4) is clamped and fixed at the vertical two ends of the upper surface of the supporting plate (3) and the lower surface (40) of the boundary beam, and at least one F-shaped clamping fence (4) is clamped at the vertical two ends of the casting and the lower surface (40) of the boundary beam;
at the inner inclined plane (50) of the boundary beam, the positioning support block (7) and the casting are respectively positioned on the inner inclined plane (50) of the boundary beam, the magnetic drill (8) is positioned on the positioning support block (7), and the support frame (6) is positioned at the outer edge of the lower surface of the boundary beam (10); at least one F-shaped clamping fence (4) is clamped and fixed between the upper surface of the positioning supporting block (7) and the bottom surface of the supporting frame (6) in the vertical direction, and at least one F-shaped clamping fence (4) is clamped at the two vertical ends of the bottom surfaces of the casting and the supporting frame (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010000234.1A CN111085707A (en) | 2020-01-02 | 2020-01-02 | Auxiliary tool and method for drilling and riveting of chassis boundary beam and casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010000234.1A CN111085707A (en) | 2020-01-02 | 2020-01-02 | Auxiliary tool and method for drilling and riveting of chassis boundary beam and casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111085707A true CN111085707A (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010000234.1A Pending CN111085707A (en) | 2020-01-02 | 2020-01-02 | Auxiliary tool and method for drilling and riveting of chassis boundary beam and casting |
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| CN (1) | CN111085707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178464A (en) * | 2021-12-15 | 2022-03-15 | 北京航星机器制造有限公司 | Tool and method for riveting revolving body part |
-
2020
- 2020-01-02 CN CN202010000234.1A patent/CN111085707A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178464A (en) * | 2021-12-15 | 2022-03-15 | 北京航星机器制造有限公司 | Tool and method for riveting revolving body part |
| CN114178464B (en) * | 2021-12-15 | 2023-11-07 | 北京航星机器制造有限公司 | Tool and method for riveting rotary parts |
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