Tool head for improving forming quality of slender thin-walled workpiece

Abstract

The utility model discloses a tool head for improving the forming quality of a slender thin-wall part, which is characterized in that a fixing block is fixed on a forming tool head main body, a spring is fixed at the lower part of the fixing block, a pressing block is fixed below the spring, and the lower part of the forming tool head main body is flush with the lower part of the pressing block; in the machining process, the pressing block applies external pressure to the edge of the forming part of the plate, and the problem that protrusions are likely to be generated when long and thin parts are machined is solved. By the adoption of the tool head, the number of workpieces needing to be trimmed is greatly reduced, the fault-free working time of a production line is prolonged, and therefore the overall yield is remarkably improved. The improvement not only reduces the production cost, but also improves the overall economic benefit of enterprises. When parts with the same number are machined, the use efficiency of raw materials can be remarkably improved through a pressing mechanism of the tool head. Therefore, not only is the production cost reduced, but also the material consumption is reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to a tool head for improving the forming quality of slender thin-walled parts, belonging to the technical field of progressive forming. Background Art

[0002] Incremental forming of sheet metal is a flexible manufacturing technology suitable for single-piece and small-batch metal products. It employs a "layered manufacturing" approach, using a forming tool head that moves along a contour under the control of a CNC system, shaping the sheet layer by layer. This forming method eliminates the need for expensive mold manufacturing and enables the digital and customized production of metal products. However, conventional incremental forming tool heads often face the following technical challenges when producing slender indentations:

[0003] 1. The problem of convexity of the edge of the dent: When using a traditional tool head for processing, due to the limitation of material fluidity during the incremental forming process, the edge of the dent often convexifies due to excessive movement of the material (such as Figure 2 This phenomenon not only affects the appearance of the component but can also adversely affect its functionality, especially in applications where surface flatness and precision are critical.

[0004] 2. Lack of machining consistency: Existing technologies rely too heavily on the physical limitations of machinery when dealing with dents, resulting in significant variability in machining results for each workpiece. This inconsistency not only reduces the level of automation in production but also increases the cost of subsequent machining and finishing.

[0005] 3. Low production efficiency: Due to the edge bulging phenomenon caused by dent processing, subsequent trimming and treatment are often required, which invisibly prolongs the production cycle and affects overall production efficiency. In addition, frequent fault repairs will increase production line downtime, resulting in economic losses. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a tool head for improving the forming quality of slender thin-walled parts in view of the deficiencies in the prior art.

[0007] The utility model adopts the following technical solutions:

[0008] A tool head for improving the forming quality of slender thin-walled parts, wherein a fixing block 2 is fixed on a forming tool head body 1, a spring 3 is fixed at the lower part of the fixing block 2, and a clamping block 4 is fixed below the spring 3. The lower part of the forming tool head body and the lower part of the clamping block 4 are flush; during processing, the clamping block 4 applies external pressure to the edge of the forming part of the sheet material, thereby alleviating the problem of bulges that are easily generated when processing slender parts.

[0009] In the tool head for improving the forming quality of slender thin-walled parts, the pressing block 4 is a circular ring structure, and the lower part of the forming tool head body acts on the sheet material 5 through the hole in the middle of the circular ring structure.

[0010] In the tool head for improving the forming quality of slender thin-walled parts, a spring 3 is provided on each side of the forming tool head body 1, and a pressing block 4 is connected to the lower part of each spring 3.

[0011] The tool head for improving the forming quality of slender thin-walled parts has an arc-shaped lower surface of the clamping block 4, which applies external pressure to the edge of the sheet forming part through the arc surface. The arc is tangent to the movement direction of the forming tool head body, reducing the forward resistance of the clamping block 4 during operation.

[0012] The tool head for improving the forming quality of slender thin-walled parts has a roller structure on the lower surface of the pressing block 4, which applies external pressure to the edge of the sheet forming part through the roller, further reducing the forward resistance of the pressing block 4 during operation.

[0013] The use of this new tool head significantly reduces the number of workpieces requiring trimming, extending the production line's trouble-free operating time and significantly improving overall productivity. This improvement not only reduces production costs but also enhances the company's overall economic benefits. When machining the same number of parts, the clamping mechanism of this new tool head significantly improves the efficiency of raw material utilization. This not only reduces production costs but also reduces material consumption to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 Schematic diagram of the raised defect generated on the edge during incremental forming;

[0016] 1 forming tool head body; 2 fixing block; 3 spring; 4 pressing block; 5 sheet material; DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to specific embodiments.

[0018] refer to Figure 1 A tool head for improving the forming quality of slender thin-walled parts. A fixing block 2 is fixed on the existing forming tool head body 1, a spring 3 is fixed at the lower part of the fixing block 2, and a clamping block 4 is fixed below the spring 3. The lower part of the forming tool head body and the lower part of the clamping block 4 are flush; during the processing, the clamping block 4 applies external pressure to the edge of the forming part of the sheet metal, thereby alleviating the problem of bulges that are easily generated when processing slender parts.

[0019] Furthermore, the pressing block 4 is a circular ring structure, and the lower part of the forming tool head body acts on the sheet material 5 through the hole in the middle of the circular ring structure.

[0020] Furthermore, a spring 3 is provided on each side of the forming tool head body 1 , and a pressing block 4 is connected to the lower portion of each spring 3 .

[0021] Furthermore, the lower surface of the clamping block 4 is arc-shaped, and external pressure is applied to the edge of the sheet forming part through the arc surface. The arc is tangent to the movement direction of the forming tool head body, reducing the forward resistance of the clamping block 4 during operation.

[0022] Furthermore, the lower surface of the pressing block 4 is configured as a roller structure, and the roller applies external pressure to the edge of the sheet forming portion, thereby further reducing the forward resistance of the pressing block 4 during operation.

[0023] Install the selected tool head on the incremental forming machine, ensuring a reliable and secure connection to the machine. Install a fixing block on the tool head, tightly connected to the tool head body. Keep a certain distance between the clamping block and the tool head. The clamping block is fixed to the tool head body by a spring and can move up and down.

[0024] The mold is secured to the machine table, ensuring secure contact between the mold and the machine. Standard positioning is essential to ensure machining accuracy and consistency. During positioning, the mold geometry and machining requirements must be considered to ensure it remains stable during machining, ensuring consistent and precise dimples are achieved with each machining operation.

[0025] After the mold is installed and positioned, machining begins using the generated NC code. The machine tool then automatically operates according to pre-set parameters and paths. During this process, the operator monitors the equipment status in real time to ensure the CNC system correctly executes every machining instruction.

[0026] As machining progresses, the sheet metal may bulge upward due to the material's characteristics. In this situation, the clamping block 4 maintains constant pressure on the sheet metal, mitigating this bulging. It's worth noting that as machining depth increases, the spring applies greater force, increasing the downward pressure of the clamping block. This continuously adapts to changing machining conditions and ensures the precise shape and size of the indentation.

[0027] When processing is complete, the operator removes the processed sheet from the machine. During this process, any bulges that may have existed are significantly reduced due to the action of the hold-down block. The sample is now formed as expected, with excellent appearance and flatness, ensuring its future application.

[0028] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A tool head for improving the forming quality of slender thin-walled parts, characterized in that: A fixing block (2) is fixed on a forming tool head body (1), a spring (3) is fixed at the bottom of the fixing block (2), a pressing block (4) is fixed below the spring (3), and the bottom of the forming tool head body and the bottom of the pressing block (4) are flush; during processing, the pressing block (4) applies external pressure to the edge of the forming part of the sheet material, thereby alleviating the problem of bulges that are easily generated when processing slender parts.

2. The tool head for improving the forming quality of slender thin-walled parts according to claim 1, characterized in that: The pressing block (4) is a circular ring structure, and the lower part of the forming tool head body acts on the sheet material (5) through the hole in the middle of the circular ring structure.

3. The tool head for improving the forming quality of slender thin-walled parts according to claim 1, characterized in that: A spring (3) is provided on each side of the forming tool head body (1), and the lower part of each spring (3) is connected to a pressing block (4).

4. The tool head for improving the forming quality of slender thin-walled parts according to claim 1, characterized in that: The lower surface of the pressing block (4) is in an arc shape, and external pressure is applied to the edge of the sheet forming part through the arc surface. The arc is tangent to the movement direction of the forming tool head body, reducing the forward resistance of the pressing block (4) during operation.

5. The tool head for improving the forming quality of slender thin-walled parts according to claim 1, characterized in that: The lower surface of the pressing block (4) is configured as a roller structure, and the roller applies external pressure to the edge of the sheet forming portion, thereby further reducing the forward resistance of the pressing block (4) during operation.

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