Flexible clamp suitable for machining of multi-model car body rear longitudinal beam castings

Abstract

The utility model discloses a flexible clamp suitable for machining of rear longitudinal beam castings of various models of vehicle bodies, which comprises a base plate (2), an integrated module clamp is arranged on the base plate (2), a longitudinal beam casting (1) is arranged on the base plate (2), the module clamp comprises a positioning plate (4) arranged on the base plate (2), an air cylinder (5) is arranged on the positioning plate (4), a clamping plate (6) is arranged on the air cylinder (5), and the clamping plate (6) is connected with the base plate (2). A fixing pin (7) is arranged between the positioning plate (4) and the base plate (2); the positioning groove (3) is used for calibrating the position of the module clamp, after the module clamp is placed, the module clamp is rapidly fixed to the base plate (2) through the fixing piece, the purpose of rapid replacement and installation is achieved, the air cylinder (5) and the clamping plate (6) are fixed to the base plate (2) through the positioning plate (4) and the fixing pin (7), and the positioning plate (4) is convenient to disassemble and assemble through the fixing pin (7).

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts processing, and in particular relates to a flexible clamp suitable for processing rear longitudinal beam castings of various types of automobile bodies. Background Art

[0002] In the era of electric and intelligent automobiles, lightweight automobiles are imperative. One-piece die-casting technology saves a lot of production line costs and infrastructure costs, reduces production time and labor costs, and manufactures large aluminum parts through large-tonnage die-casting machines, mainly referring to the integrated processing of automobile body structural parts. The multiple separate and scattered small parts in the original design are redesigned and highly integrated, and then die-cast into complete large parts in one step using a die-casting machine, omitting welding and assembly processes.

[0003] The patent number is 201922084739.6, and a public specification published on June 26, 2020 discloses a left front longitudinal beam front section clamp, including a base, on which a first clamping part, a second clamping part, a third clamping part, a fourth clamping part and a side fixing part are fixedly arranged. The first clamping part clamps and fixes the closed end of the left front longitudinal beam front section, and the fourth clamping part clamps and fixes the open end of the left front longitudinal beam front section. The fourth clamping part is also provided with a first locating pin for positioning the upper cover plate of the left front longitudinal beam front section and a second locating pin for positioning the lower trough body of the left front longitudinal beam front section. The second clamping part and the third clamping part are respectively used to clamp and fix the middle part of the left front longitudinal beam front section. The second clamping part and the third clamping part are also respectively provided with a first detector and a second detector for detecting whether there is a welding leak on the welding column. The side fixing part is provided with a third locating pin, and the third locating pin is used to position the lower trough body of the left front longitudinal beam front section. The utility model has the advantages of simple operation, reliable operation and high production efficiency.

[0004] The current automotive manufacturing trend is towards model diversification, shorter production cycles, and increased cost control requirements, creating a high demand for efficient, flexible, and versatile processing equipment and fixtures. The machining of rear longitudinal beam castings currently faces significant differences in size and shape between different vehicle models, necessitating frequent replacement of traditional specialized fixtures, poor adaptability, and high costs. Utility Model Content

[0005] The utility model aims to provide a flexible clamp which has a wide adaptability range and improves production efficiency and is suitable for processing rear longitudinal beam castings of various types of vehicle bodies.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a flexible fixture suitable for the processing of rear longitudinal beam castings of various models of vehicle bodies, including a base plate, an integrated module fixture is provided on the base plate, the longitudinal beam casting is arranged on the base plate, a fixing part for fixing the module fixture is provided on the module fixture, and a positioning groove is provided on the base plate to cooperate with the module fixture.

[0007] The module fixture includes a positioning plate arranged on a base plate, a cylinder is provided on the positioning plate, a clamping plate is provided on the cylinder, and the fixing member is a fixing pin arranged between the positioning plate and the base plate.

[0008] The positioning plate is embedded in the positioning groove.

[0009] A covering plate is provided on the positioning plate, and the fixing pin passes through the covering plate and the positioning plate.

[0010] A flexible fixture suitable for processing rear longitudinal beam castings of various models of vehicle bodies includes a base plate and a square groove fixture for clamping the longitudinal beam casting. The square groove fixture is divided into a bottom positioning piece and a clamping piece arranged on the base plate. The bottom positioning piece is a spring pin arranged on the base plate, and the clamping piece is a supporting pressure plate tightly attached to the side of the longitudinal beam casting.

[0011] The elastic pin is inserted into the pin hole in the longitudinal beam casting.

[0012] The elastic pin is connected with a linear cylinder.

[0013] The base plate is provided with a support head, and the support head is fitted on the corners of the longitudinal beam casting.

[0014] There are three supporting pressure plates in total, and the supporting pressure plates are respectively attached to different surfaces of the longitudinal beam casting, and the supporting pressure plates are connected to the oil cylinder.

[0015] The technical effects of this utility model are: by using modular fixtures, the number of special fixtures and the replacement frequency are greatly reduced, the production cost is reduced, the switching process of fixtures between different models of products is fast and smooth, and non-production time is reduced; the processing accuracy and efficiency are improved, the product quality is improved, the flexibility and response speed of the production line are enhanced, and it adapts to market changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This manual includes the following drawings, which show the following contents:

[0017] Figure 1 This is a schematic structural diagram of a flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models according to the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of a base plate of a flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models;

[0019] Figure 3 for Figure 1 A schematic diagram of a positioning pin of a flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models;

[0020] Figure 4 for Figure 1 A schematic diagram of a positioning plate of a flexible fixture suitable for machining rear longitudinal beam castings of various vehicle body models;

[0021] Figure 5 for Figure 1 Schematic diagram of the support head of a flexible fixture suitable for processing rear longitudinal beam castings of multiple models of vehicle bodies.

[0022] The markings in the figure are: 1. longitudinal beam casting; 2. base plate; 3. positioning groove; 4. positioning plate; 5. cylinder; 6. splint; 7. fixing pin; 8. cover plate; 9. spring pin; 10. support pressure plate; 11. linear cylinder; 12. support head; 13. oil cylinder. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the present invention and to facilitate its implementation.

[0024] See also Figure 1-5 A flexible fixture suitable for processing rear longitudinal beam castings of various car bodies includes a base plate 2, an integrated module fixture is provided on the base plate 2, the longitudinal beam casting 1 is set on the base plate 2, and the module fixture is provided with a fixing piece for fixing the module fixture. The base plate 2 is provided with a positioning groove 3 that cooperates with the module fixture; the position of the module fixture is first calibrated using the positioning groove 3. After the module fixture is placed, the module fixture is quickly fixed to the base plate 2 using the fixing piece to achieve the purpose of rapid replacement and installation.

[0025] The module fixture includes a positioning plate 4 arranged on the base plate 2, a cylinder 5 is provided on the positioning plate 4, a clamping plate 6 is provided on the cylinder 5, and the fixing part is a fixing pin 7 arranged between the positioning plate 4 and the base plate 2; the cylinder 5 and the clamping plate 6 are fixed to the base plate 2 by the positioning plate 4 and the fixing pin 7, and the fixing pin 7 facilitates the disassembly and assembly of the positioning plate 4.

[0026] The positioning plate 4 is embedded in the positioning groove 3; the positioning groove 3 is used to perform preliminary positioning on the positioning plate 4, which facilitates installation and helps improve installation efficiency.

[0027] A covering plate 8 is provided on the positioning plate 4 , and the fixing pin 7 passes through the covering plate 8 and the positioning plate 4 ; the covering plate 8 can protect the positioning plate 4 and reduce damage to the positioning plate 4 when the fixing pin 7 is installed.

[0028] A flexible fixture suitable for processing rear longitudinal beam castings of various models of vehicle bodies includes a base plate 2 and a square groove fixture for clamping the longitudinal beam casting 1. The square groove fixture is divided into a bottom positioning member and a clamping member arranged on the base plate 2. The bottom positioning member is a spring pin 9 arranged on the base plate 2, and the clamping member is a supporting pressure plate 10 tightly attached to the side of the longitudinal beam casting 1.

[0029] The difficulty in processing the longitudinal beam lies in the processing of the square groove on the side of the longitudinal beam casting 1. It is fixed to the outside of the square groove by a square groove fixture. The spring pin 9 is used for positioning when the product is loaded on the fixture. Clamps are used to assist in clamping on all sides of the square groove to prevent vibration during processing, improve processing efficiency and tool life. After the square groove is roughed, the machine tool controls the clamping parts to open through PLC, and then processes the side. In order to prevent the clamping parts from malfunctioning, air detection control is used when the clamping parts are in place to prevent processing and installation caused by malfunction of the fixture, thereby ensuring processing safety.

[0030] The elastic pin 9 is inserted into the pin hole in the longitudinal beam casting 1; the positioning effect is achieved by utilizing the cooperation between the elastic pin 9 and the pin hole.

[0031] After the clamp is clamped, in order to ensure smooth processing of the square groove and avoid the spring pin 9 protruding too long and interfering with the processing of the square groove, the positioning pin adopts a linear cylinder 11 and the positioning pin is retracted.

[0032] The base plate 2 is provided with a support head 12, which is fitted on the corners of the longitudinal beam casting 1; the support head 12 is anti-rotation limited to ensure the support effect of the bottom surface of the square groove and avoid tool breakage during processing.

[0033] There are three supporting plates 10 , which are respectively attached to different surfaces of the longitudinal beam casting 1 . The supporting plates 10 are connected to an oil cylinder 13 , which can better clamp the longitudinal beam casting 1 to prevent vibration during processing.

[0034] The technical effects of this utility model are: by using modular fixtures, the number of special fixtures and the replacement frequency are greatly reduced, the production cost is reduced, the switching process of fixtures between different models of products is fast and smooth, and non-production time is reduced; the processing accuracy and efficiency are improved, the product quality is improved, the flexibility and response speed of the production line are enhanced, and it adapts to market changes.

[0035] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A flexible fixture suitable for machining rear longitudinal beam castings of various vehicle body types, comprising a base plate (2), characterized in that: An integrated module fixture is provided on the base plate (2), the longitudinal beam casting (1) is arranged on the base plate (2), a fixing piece for fixing the module fixture is provided on the module fixture, and a positioning groove (3) matching the module fixture is provided on the base plate (2).

2. The flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models according to claim 1, characterized in that: The module fixture comprises a positioning plate (4) arranged on a base plate (2), a cylinder (5) is provided on the positioning plate (4), a clamping plate (6) is provided on the cylinder (5), and the fixing member is a fixing pin (7) arranged between the positioning plate (4) and the base plate (2).

3. The flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models according to claim 2, characterized in that: The positioning plate (4) is embedded in the positioning groove (3).

4. The flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models according to claim 2, characterized in that: A covering plate (8) is provided on the positioning plate (4), and the fixing pin (7) passes through the covering plate (8) and the positioning plate (4).

5. A flexible fixture suitable for machining rear longitudinal beam castings of various vehicle body types, comprising a base plate (2), characterized in that: It also includes a square groove clamp for clamping the longitudinal beam casting (1), the square groove clamp is divided into a bottom positioning member and a clamping member arranged on the base plate (2), the bottom positioning member is a spring pin (9) arranged on the base plate (2), and the clamping member is a supporting pressure plate (10) closely attached to the side of the longitudinal beam casting (1).

6. The flexible fixture suitable for machining multiple models of rear longitudinal beam castings according to claim 5, characterized in that: The elastic pin (9) is inserted into the pin hole in the longitudinal beam casting (1).

7. A flexible fixture suitable for machining rear longitudinal beam castings of various vehicle body types according to claim 5 or 6, characterized in that: The elastic pin (9) is connected to a linear cylinder (11).

8. The flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models according to claim 5, characterized in that: A support head (12) is provided on the base plate (2), and the support head (12) is attached to the corners of the longitudinal beam casting (1).

9. The flexible fixture suitable for machining rear longitudinal beam castings of various vehicle models according to claim 5, characterized in that: There are three supporting pressure plates (10) in total. The supporting pressure plates (10) are respectively attached to different surfaces of the longitudinal beam casting (1). The supporting pressure plates (10) are connected to the oil cylinder (13).

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