Anti-deformation tool for milling large-size thin plate

Abstract

The utility model relates to a large-size thin plate milling anti-deformation tool which comprises a supporting plate, a sealing plate is arranged in the middle of the upper surface of the supporting plate, a sealing cavity and a drilling auxiliary area are arranged on the upper surface of the sealing plate, an air exhaust channel is arranged in the sealing plate, an air exhaust connector is arranged on the side wall of the sealing plate, and the sealing cavity is communicated with the drilling auxiliary area through the air exhaust connector. One end of the exhaust channel is connected with the exhaust joint, and the other end of the exhaust channel is connected with the sealed cavity; a first auxiliary through hole penetrating through the sealing plate in the thickness direction of the sealing plate is formed in the drilling auxiliary area, a sealing groove is formed in the upper surface of the drilling auxiliary area, a sealing piece is arranged in the sealing groove, and the sealing piece surrounds the first auxiliary through hole; detachable positioning plates are arranged at the two ends of the supporting plate, and the thickness of the positioning plates is the same as that of the sealing plates. The device not only can bulge the middle part of the thin plate, but also does not affect tapping in the middle part of the thin plate.

Description

Technical Field

[0001] This utility model belongs to the field of machining tooling, and in particular, it is a tooling for preventing deformation during milling of large-size thin plates. Background Technology

[0002] Large sheet metal parts, such as those longer than 500mm and less than 5mm thick, are prone to deformation during milling due to their small thickness, low strength, and weak resistance to deformation, especially exhibiting upward bulging in the center. To prevent this deformation, the clamping area can be increased, for example, by using a clamping block to press the center of the sheet metal part firmly to prevent bulging. However, this method is only suitable for sheet metal parts where only the edges need to be milled. If a hole needs to be drilled in the center of the sheet metal part, the hole cannot be obstructed, and the clamping block cannot be used to press the center of the sheet metal part firmly, thus failing to solve the problem of central bulging. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a tooling for milling large-size thin plates to prevent deformation, which can prevent the middle of the thin plate from bulging, without affecting the opening of holes in the middle of the thin plate.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: a deformation-resistant tooling for milling large-size thin plates, including a support plate, a sealing plate provided in the middle of the upper surface of the support plate, a sealing cavity and a drilling auxiliary area provided on the upper surface of the sealing plate, an air extraction channel provided inside the sealing plate and the support plate, an air extraction connector provided on the side wall of the support plate, one end of the air extraction channel being connected to the air extraction connector and the other end being connected to the sealing cavity; a first auxiliary through hole penetrating the sealing plate along the thickness direction of the sealing plate is provided in the drilling auxiliary area, a sealing groove is provided on the upper surface of the drilling auxiliary area, a sealing element is provided in the sealing groove, and the sealing element surrounds the first auxiliary through hole; detachable positioning plates are provided at both ends of the support plate, the thickness of the positioning plates being the same as the thickness of the sealing plate.

[0005] Furthermore, the sealed cavity includes multiple transverse grooves, multiple longitudinal grooves, and an annular groove located at the edge of the sealing plate, wherein the transverse grooves, longitudinal grooves, and annular groove are interconnected.

[0006] Furthermore, the transverse groove, longitudinal groove, and annular groove are rectangular grooves.

[0007] Furthermore, the air extraction channel includes a first air passage and a second air passage. One end of the first air passage is connected to the air extraction connector, and the other end is connected to the lower end of the second air passage. The upper end of the second air passage is connected to the sealed cavity.

[0008] Furthermore, the upper end of the second air passage is connected to the intersection of the transverse groove and the longitudinal groove.

[0009] Furthermore, there are multiple air extraction connectors, each of which is connected to the sealed cavity through an air extraction channel.

[0010] Furthermore, there are multiple positioning plates.

[0011] Furthermore, the sealing element is an elastic sealing ring.

[0012] Furthermore, the positioning plate is provided with a second auxiliary through hole.

[0013] The beneficial effects of this utility model are as follows: During milling, the support plate is horizontally fixed to the worktable of the vertical milling machine. Then, a large-sized thin plate is laid flat on the upper surface of the positioning plate and the sealing plate, which support the large-sized thin plate. A clamp is then used to press and fix the large-sized thin plate, keeping it fixed and sealing the cavity of the sealing plate. Next, an air extraction device is connected to the air extraction connector, and milling can then be performed. During milling, the air extraction device extracts air from the sealed cavity, reducing the pressure within the cavity and generating suction on the center of the large-sized thin plate. This suction counteracts the stress caused by the bulging of the center of the large-sized thin plate, thus preventing bulging and deformation. The position of the first auxiliary through hole corresponds to the location where a hole needs to be opened in the center of the large-sized thin plate. When opening the hole, the cutting tool can penetrate the large-sized thin plate and extend into the first auxiliary through hole without affecting the opening process. By setting a seal around the first auxiliary through hole, the sealing performance of the sealing cavity is not affected even after the large-sized thin plate is opened in the middle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of a large-sized thin-plate component;

[0017] Reference numerals: 1—Support plate; 2—Sealing plate; 3—Drilling auxiliary area; 4—First auxiliary through hole; 5—Sealing element; 6—Positioning plate; 7—Air extraction connector; 8—Transverse groove; 9—Longitudinal groove; 10—Annular groove; 11—First air passage; 12—Second air passage; 13—Second auxiliary through hole. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] This utility model relates to a tooling for preventing deformation during the milling of large-size thin-plate parts, such as... Figure 1 and Figure 2As shown, the system includes a support plate 1. A sealing plate 2 is provided in the middle of the upper surface of the support plate 1. The upper surface of the sealing plate 2 is provided with a sealing cavity and a drilling auxiliary area 3. An air extraction channel is provided inside the sealing plate 2 and the support plate 1. An air extraction connector 7 is provided on the side wall of the support plate 1. One end of the air extraction channel is connected to the air extraction connector 7, and the other end is connected to the sealing cavity. A first auxiliary through hole 4 is provided in the drilling auxiliary area 3, penetrating the sealing plate 2 along the thickness direction. A sealing groove is provided on the upper surface of the drilling auxiliary area 3, and a sealing element 5 is provided in the sealing groove, surrounding the first auxiliary through hole 4. Removable positioning plates 6 are provided at both ends of the support plate 1. The thickness of the positioning plates 6 is the same as the thickness of the sealing plate 2.

[0020] Support plate 1 is a flat metal sheet with two flat sides, its length and width exceeding the length and width of the large-sized thin sheet to be processed. Sealing plate 2 can also be a metal sheet and can be fixed to support plate 1 with screws. The size and shape of sealing plate 2 are determined according to the shape and size of the large-sized thin sheet to be processed, ensuring that the large-sized thin sheet can completely cover sealing plate 2, thereby sealing the sealing cavity. A vacuum connector 7 is used to connect to an external vacuum pipeline, specifically a threaded connector. Vacuum connector 7 is located on the side wall of support plate 1 to avoid interfering with the milling process above.

[0021] By setting a sealing cavity on the upper surface of the sealing plate 2, and setting an air extraction channel and air extraction connector 7 connected to the sealing cavity, during milling, the large-sized thin plate to be machined seals the sealing cavity. Then, the air extraction device is connected to the air extraction connector 7, and the air extraction device is used to extract the air from the sealing cavity, so that the air pressure in the sealing cavity forms a negative pressure, which generates suction force on the middle of the large-sized thin plate, offsetting the cutting stress that causes the middle of the large-sized thin plate to bulge, and preventing the middle of the large-sized thin plate from deforming.

[0022] The drilling auxiliary area 3 is used to ensure smooth drilling of the center of a large-sized thin plate. Specifically, a first auxiliary through hole 4 is provided in the drilling auxiliary area 3. The positions of the drilling auxiliary area 3 and the first auxiliary through hole 4 correspond to the position of the hole to be drilled in the center of the large-sized thin plate. This ensures that after the large-sized thin plate is clamped and positioned, the position of the hole to be drilled is directly above the first auxiliary through hole 4. The diameter of the first auxiliary through hole 4 is larger than the diameter of the hole to be processed. When drilling the center of the large-sized thin plate, the drilling tool penetrates the large-sized thin plate and extends into the first auxiliary through hole 4 to complete the drilling. To prevent the drilling from affecting the sealing performance of the sealing cavity, a sealing groove is provided around the first auxiliary through hole 4. The sealing groove is annular, and a sealing element 5 is provided inside the sealing groove. The sealing element 5 can be in close contact with the lower surface of the large-sized thin plate to prevent air leakage. The sealing element 5 can be a circular elastic sealing ring, such as a rubber ring, which is inserted into the sealing groove.

[0023] It is evident that this invention can not only address the bulging of the middle section of a thin sheet but also does not affect the ability to create holes in the middle section of the thin sheet.

[0024] Positioning plate 6 is used to support and position the two ends of a large-sized thin plate. Specifically, during milling, support plate 1 is first horizontally fixed to the worktable of a vertical milling machine. Then, the large-sized thin plate is laid flat on sealing plate 2 and positioning plate 6, ensuring that the large-sized thin plate covers sealing plate 2 and positioning plate 6. Then, a clamp is used to press and fix the two ends of the large-sized thin plate onto positioning plate 6. At this time, the middle part of the large-sized thin plate seals the sealing cavity. Positioning plate 6 has the same thickness as sealing plate 2, ensuring that the upper surfaces of positioning plate 6 and sealing plate 2 are on the same horizontal plane, which can guarantee the flatness of the large-sized thin plate after positioning and prevent deformation.

[0025] The sealed cavity can be a single, integral cavity structure. To prevent large, thin plates from collapsing and deforming under suction, it includes multiple transverse grooves 8, multiple longitudinal grooves 9, and an annular groove 10 located at the edge of the sealing plate 2. The transverse grooves 8, longitudinal grooves 9, and annular groove 10 are interconnected. The transverse grooves 8, longitudinal grooves 9, and annular groove 10 are all located on the upper surface of the sealing plate 2, and their widths are relatively small. Therefore, after the large, thin plate covers the sealing plate 2, it can fit against the upper surface of the sealing plate 2 between the grooves, increasing the contact area between the sealing plate 2 and the large, thin plate. When a vacuum is applied to the transverse grooves 8, longitudinal grooves 9, and annular groove 10, the large, thin plate will not collapse and deform into the sealed cavity.

[0026] The transverse groove 8, the longitudinal groove 9, and the annular groove 10 are rectangular grooves, but they can also be grooves with a semi-circular cross-section.

[0027] In this utility model, the air extraction channel is as follows: Figure 2 As shown, the system includes a first air passage 11 and a second air passage 12. One end of the first air passage 11 is connected to the suction connector 7, and the other end is connected to the lower end of the second air passage 12. The upper end of the second air passage 12 is connected to the sealing cavity. The first air passage 11 is perpendicular to the thickness direction of the support plate 1, and the axial direction of the second air passage 12 is consistent with the thickness direction of the sealing plate 2. During processing, the sealing plate 2 is fixed to the upper surface of the support plate 1, and a blind hole of a certain depth is drilled in the side wall of the support plate 1 to obtain the second air passage 12. Then, a hole is drilled downwards from the upper surface of the sealing plate 2 to the first air passage 11 to obtain the second air passage 12.

[0028] To improve pumping efficiency, the upper end of the second air passage 12 is connected to the intersection of the transverse groove 8 and the longitudinal groove 9. Simultaneously, multiple pumping connectors 7 can be provided, each connected to the sealed cavity via a pumping channel. Different pumping channels connect to different positions within the sealed cavity, and multiple pumping connectors 7 can pump air simultaneously, improving pumping efficiency while ensuring a sufficiently high vacuum in the transverse groove 8, longitudinal groove 9, and annular groove 10.

[0029] Multiple positioning plates 6 are used, and each positioning plate 6 can be installed on the support plate 1 with screws. The positioning plates 6 are used to support the two ends of a large-sized thin plate; therefore, the shape and size of the positioning plates 6 must be determined according to the shape and size of the two ends of the large-sized thin plate to ensure that the shape and size of the positioning plates 6 are compatible with the shape and size of the two ends of the large-sized thin plate. Since the shape of the two ends of the large-sized thin plate may be irregular, multiple positioning plates 6 are used to support the two ends of the large-sized thin plate. Each positioning plate 6 can be set in a corresponding position according to the support requirements and can be of various shapes, such as rectangular, triangular, or irregular shapes. For example, a large-sized thin plate with the shape of... Figure 3 As shown, positioning plate 6 adopts... Figure 1 The layout shown.

[0030] When holes need to be machined at both ends of a large-sized thin plate, a second auxiliary through hole 13 is provided on the positioning plate 6. The number and position of the second auxiliary through hole 13 are determined according to the number and position of the holes to be machined.

[0031] In summary, this utility model can ensure stable support and effective clamping of large-sized thin plates, keeping them stable during milling. It also prevents the center of the large-sized thin plates from bulging upwards or sinking downwards, and does not affect the drilling of holes on the large-sized thin plates, thus meeting processing requirements.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tooling system for preventing deformation during milling of large-size thin sheet metal parts, characterized in that: The system includes a support plate (1), a sealing plate (2) is provided in the middle of the upper surface of the support plate (1), a sealing cavity and a drilling auxiliary area (3) are provided on the upper surface of the sealing plate (2), an air extraction channel is provided inside the sealing plate (2) and the support plate (1), an air extraction connector (7) is provided on the side wall of the support plate (1), one end of the air extraction channel is connected to the air extraction connector (7), and the other end is connected to the sealing cavity; a first auxiliary through hole (4) is provided in the drilling auxiliary area (3) through the sealing plate (2) along the thickness direction of the sealing plate (2), a sealing groove is provided on the upper surface of the drilling auxiliary area (3), a sealing element (5) is provided in the sealing groove, and the sealing element (5) surrounds the first auxiliary through hole (4); detachable positioning plates (6) are provided at both ends of the support plate (1), and the thickness of the positioning plate (6) is the same as the thickness of the sealing plate (2).

2. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 1, characterized in that: The sealed cavity includes multiple transverse grooves (8), multiple longitudinal grooves (9), and an annular groove (10) located at the edge of the sealing plate (2), wherein the transverse grooves (8), longitudinal grooves (9), and annular groove (10) are interconnected.

3. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 2, characterized in that: The transverse groove (8), longitudinal groove (9), and annular groove (10) are rectangular grooves.

4. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 2, characterized in that: The air extraction channel includes a first air channel (11) and a second air channel (12). One end of the first air channel (11) is connected to the air extraction connector (7), and the other end is connected to the lower end of the second air channel (12). The upper end of the second air channel (12) is connected to the sealed cavity.

5. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 4, characterized in that: The upper end of the second air passage (12) is connected to the intersection of the transverse groove (8) and the longitudinal groove (9).

6. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 1, characterized in that: There are multiple air extraction connectors (7), and each air extraction connector (7) is connected to the sealed cavity through an air extraction channel.

7. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 1, characterized in that: There are multiple positioning plates (6).

8. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 1, characterized in that: The sealing element (5) is an elastic sealing ring.

9. The anti-deformation tooling for milling large-size thin-plate parts as described in claim 1, characterized in that: The positioning plate (6) is provided with a second auxiliary through hole (13).

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