Translation:
Bending Machine
A bending machine is a machine used to bend thin sheets of metal. Its structure mainly consists of a frame, a worktable, and a clamping plate. The worktable is placed on the frame and is composed of a base and a pressure plate. The base is connected to the clamping plate through hinges. The base is made up of a seat shell, a coil, and a cover plate. The coil is placed inside the recess of the seat shell, and the top of the recess is covered with a cover plate. When the coil is energized through the wires, it generates a magnetic force that clamps the sheet between the pressure plate and the base. The electromagnetic clamping allows for the bending of various workpieces and enables the processing of workpieces with side walls. The operation is also very simple.
Hydraulic bending machines can be classified according to their synchronization methods: torsion shaft synchronization, mechanical-hydraulic synchronization, and electro-hydraulic synchronization. They can also be classified based on their motion modes: up-stroking and down-stroking.
CNC bending is an important process in sheet metal fabrication. With a few bends, various shapes can be formed. Let's take a look at the CNC bending process.
CNC Bending Process:
1. Main types of bending tools:
2. Main applications of various tools for different bending types:
(1) Straight tool: Generally used for single bends without considering avoidance.
However, avoidance should be considered in the following situations:
When bending interference occurs, another type of bending tool should be used. In the case of interference on the left, a small bending tool should be used for avoidance:
For the case on the right, a pointed tool should be used for avoidance. However, it should be noted that the pointed tool has a sharp tip and lower strength, so it cannot be used for bending thick sheets. Generally, pointed tools are not used for sheet thicknesses above 1.5mm. In terms of process arrangement, alternative methods can be considered, such as arranging the rivet nut pressing process after bending.
There are also situations where even a small bending tool cannot be used for avoidance. In such cases, a large bending tool should be used for avoidance:
However, there are times when even a large bending tool cannot be used for avoidance. In this case, additional processes are required. First, a mark is pressed along the bending line. To achieve better bending, the first bend is performed to a certain angle to avoid contact with the tool, and then the edge is pressed to 90 degrees. In general, the marking process can be applied when bending cannot be completed in one step. This ensures that the bending line conforms to the original marking during the second bending operation, preventing bending deviation or poor control of the bending angle.
Therefore, in the design process, it is necessary to consider such issues and avoid using such processes as much as possible when meeting the requirements. This is because the direct bending effect is better, and there may be deviations in dimensions and angles.
Bending machines can also be used for edge crushing of workpieces. The workpiece is first bent to 30 degrees and then crushed using a flat tool. However, if edge crushing can be accomplished using a regular punch press, it is generally preferred over the bending machine because the effect of edge crushing with a punch press is relatively better.
During the bending process, apart from interference between the workpiece and the bending tool, there may also be interference between the workpiece and the bending machine when the workpiece size is relatively large.
When arranging the process, we often have to consider whether bending is feasible and how good the bending can be. Bending is a critical process that directly affects the quality of bending. Many quality issues often arise from poor control of bending dimensions. Therefore, special attention should be paid to bending issues in the design process, as this relates to the stability of product quality during mass production.
For different sheet thicknesses, there are limitations on the bending dimensions. They should not be too small and are generally related to the lower die. The general rule is to select a die slot with a width six times the sheet thickness, as this provides the most suitable bending coefficient based on experience. Die slots are typically classified based on their outer width, with 6 and 10 being common sizes.
Therefore, in the design process, it is necessary to consider such issues and avoid using such processes as much as possible when meeting the requirements. This is because the direct bending effect is better, and there may be deviations in dimensions and angles.
Bending machines can also be used for edge crushing of workpieces. The workpiece is first bent to 30 degrees and then crushed using a flat tool. However, if edge crushing can be accomplished using a regular punch press, it is generally preferred over the bending machine because the effect of edge crushing with a punch press is relatively better.
During the bending process, apart from interference between the workpiece and the bending tool, there may also be interference between the workpiece and the bending machine when the workpiece size is relatively large.
When arranging the process, we often have to consider whether bending is feasible and how good the bending can be. Bending is a critical process that directly affects the quality of bending. Many quality issues often arise from poor control of bending dimensions. Therefore, special attention should be paid to bending issues in the design process, as this relates to the stability of product quality during mass production.
In basic industrial production, the application of sheet metal bending machines is very extensive. The bending mechanism, as the most critical mechanism in sheet metal bending machines, has significant significance in meeting the diverse needs of the manufacturing industry. It is an indispensable part of the manufacturing industry.
Bending Machine
A bending machine is a machine used to bend thin sheets of metal. Its structure mainly consists of a frame, a worktable, and a clamping plate. The worktable is placed on the frame and is composed of a base and a pressure plate. The base is connected to the clamping plate through hinges. The base is made up of a seat shell, a coil, and a cover plate. The coil is placed inside the recess of the seat shell, and the top of the recess is covered with a cover plate. When the coil is energized through the wires, it generates a magnetic force that clamps the sheet between the pressure plate and the base. The electromagnetic clamping allows for the bending of various workpieces and enables the processing of workpieces with side walls. The operation is also very simple.
Hydraulic bending machines can be classified according to their synchronization methods: torsion shaft synchronization, mechanical-hydraulic synchronization, and electro-hydraulic synchronization. They can also be classified based on their motion modes: up-stroking and down-stroking.
CNC bending is an important process in sheet metal fabrication. With a few bends, various shapes can be formed. Let's take a look at the CNC bending process.
CNC Bending Process:
1. Main types of bending tools:
2. Main applications of various tools for different bending types:
(1) Straight tool: Generally used for single bends without considering avoidance.
However, avoidance should be considered in the following situations:
When bending interference occurs, another type of bending tool should be used. In the case of interference on the left, a small bending tool should be used for avoidance:
For the case on the right, a pointed tool should be used for avoidance. However, it should be noted that the pointed tool has a sharp tip and lower strength, so it cannot be used for bending thick sheets. Generally, pointed tools are not used for sheet thicknesses above 1.5mm. In terms of process arrangement, alternative methods can be considered, such as arranging the rivet nut pressing process after bending.
There are also situations where even a small bending tool cannot be used for avoidance. In such cases, a large bending tool should be used for avoidance:
However, there are times when even a large bending tool cannot be used for avoidance. In this case, additional processes are required. First, a mark is pressed along the bending line. To achieve better bending, the first bend is performed to a certain angle to avoid contact with the tool, and then the edge is pressed to 90 degrees. In general, the marking process can be applied when bending cannot be completed in one step. This ensures that the bending line conforms to the original marking during the second bending operation, preventing bending deviation or poor control of the bending angle.
Therefore, in the design process, it is necessary to consider such issues and avoid using such processes as much as possible when meeting the requirements. This is because the direct bending effect is better, and there may be deviations in dimensions and angles.
Bending machines can also be used for edge crushing of workpieces. The workpiece is first bent to 30 degrees and then crushed using a flat tool. However, if edge crushing can be accomplished using a regular punch press, it is generally preferred over the bending machine because the effect of edge crushing with a punch press is relatively better.
During the bending process, apart from interference between the workpiece and the bending tool, there may also be interference between the workpiece and the bending machine when the workpiece size is relatively large.
When arranging the process, we often have to consider whether bending is feasible and how good the bending can be. Bending is a critical process that directly affects the quality of bending. Many quality issues often arise from poor control of bending dimensions. Therefore, special attention should be paid to bending issues in the design process, as this relates to the stability of product quality during mass production.
For different sheet thicknesses, there are limitations on the bending dimensions. They should not be too small and are generally related to the lower die. The general rule is to select a die slot with a width six times the sheet thickness, as this provides the most suitable bending coefficient based on experience. Die slots are typically classified based on their outer width, with 6 and 10 being common sizes.
Therefore, in the design process, it is necessary to consider such issues and avoid using such processes as much as possible when meeting the requirements. This is because the direct bending effect is better, and there may be deviations in dimensions and angles.
Bending machines can also be used for edge crushing of workpieces. The workpiece is first bent to 30 degrees and then crushed using a flat tool. However, if edge crushing can be accomplished using a regular punch press, it is generally preferred over the bending machine because the effect of edge crushing with a punch press is relatively better.
During the bending process, apart from interference between the workpiece and the bending tool, there may also be interference between the workpiece and the bending machine when the workpiece size is relatively large.
When arranging the process, we often have to consider whether bending is feasible and how good the bending can be. Bending is a critical process that directly affects the quality of bending. Many quality issues often arise from poor control of bending dimensions. Therefore, special attention should be paid to bending issues in the design process, as this relates to the stability of product quality during mass production.
In basic industrial production, the application of sheet metal bending machines is very extensive. The bending mechanism, as the most critical mechanism in sheet metal bending machines, has significant significance in meeting the diverse needs of the manufacturing industry. It is an indispensable part of the manufacturing industry.
