Purpose:
To guide bending personnel in the rational selection of tooling, improve the tool's lifespan, and reduce abnormal tool wear.
Benefits:
Shorten the tool selection time for bending, improve production efficiency, and reduce costs.
Applicable Scope:
Sheet metal bending section.
Content:
1. Common upper tools for bending include: 88° straight tool (R1), 30° pointed tool/straight pointed tool (R1/R0.5), 88° bend tool (R1), 88° straight bend tool (R1/R0.5), flattening die, and dedicated upper tools.
2. Common lower tools for bending include: single/double V lower tools with angles of 30° and 88°, V4, V6, V7, V8, V10, V12, V16, V25 (mm).
3. The selection of bending tools is generally based on the arrangement of bending tool sequences after reviewing the drawings.
4. Selection of upper tools based on the angle:
4.1 When the processing angle is greater than or equal to 88 degrees, upper tools with angles less than 88° can be selected (e.g., straight tool, pointed tool/straight pointed tool, bend tool, straight bend tool, etc.).
4.2 When the processing angle is less than 88 degrees, a 30° upper tool (e.g., pointed tool/straight pointed tool) should be used.
4.3 When edge crushing is required, a pointed tool/straight pointed tool can be used to form a sharp angle (usually 30 degrees), followed by flattening with a flattening die to crush the edge.
4.4 When the plate thickness exceeds 3mm, it is advisable to avoid using pointed tools/straight pointed tools to prevent damage to the tools.
5. Selection of upper tools based on the required shape:
When b-a≧5mm, straight pointed tools, straight tools, bend tools, and straight bend tools can be used.
When 1mm﹤b-a﹤5mm, bend tools and straight bend tools can be used.
When b-a﹤1mm, a bend tool can be used.
Note: 100mm﹥a, b﹥6mm are internal dimensions.
When Z-shaped processing is required, straight tools, pointed tools/straight pointed tools, straight bend tools, and bend tools are usually used.
If you want to obtain a sheet metal unfolding video, please send me a private message with the word "tutorial."
6. Selection of lower tools:
6.1 Generally, the size of the V-groove is selected as 6 times the plate thickness.
6.2 Selection of lower tools based on the angle: When the angle is greater than or equal to 88 degrees, 88° and 30° lower tools can be selected; when the angle is less than 88 degrees, a 30° lower tool should be used (measure the effective height of the upper tool: the distance from the force surface of the upper tool clamp to the edge).
7. When joining upper and lower tools, the following points should be noted:
7.1 During selection, molds with inconsistent heights should not be mixed to avoid poor angles or even damage to the tooling, leading to work-related accidents.
7.2 When selecting upper tools for edge-banded door panels, product quality and ease of handling should be considered. Generally, a gap of 3-6mm is left at both ends (the need for a "side tool" should be considered if necessary).
7.3 Avoid using damaged molds for product processing to prevent poor appearance. After installing the upper tool, check the straightness and smoothness of the cutting edge.
7.4 When avoiding positions, pay attention to the appearance quality issues such as indentation and improper angles.
8. Selection of tooling under abnormal conditions:
8.1 When bending lines, use pressure-resistant pointed tools for the upper tool and ensure that the lower tool is aligned and without steps.
8.2 When processing U-shapes and the inner dimension is smaller than 6mm, use a bend tool to create an opening larger than the second tool size, then flatten it to ensure the size, or use a dedicated mold for shaping.
8.3 When there are specific requirements for internal R-round corners of the processed products, consider matching upper tools with the corresponding R-round corners in advance (e.g., R0.3, R1, R4, R8, or R10 for the internal R-corner).
8.4 When the plate thickness is 2.0 and a 6mm fold is required, use an 88° V8 lower tool. When the plate thickness is 3.0 and a 10mm fold is required, use an 88° V12 lower tool to prevent the workpiece from slipping and being unprocessable due to excessively small dimensions.
8.5 When processing round steel, dedicated tooling should be used, and there should be a dedicated operator.
9. It is advisable to avoid joining upper and lower tools as much as possible to prevent joint marks that may affect the appearance of the product.
10. When aligning upper and lower tools, use molds with a length of 300mm or greater for alignment. It is strictly prohibited to use small or less than 300mm tooling for alignment. The length difference between upper and lower tools should not exceed 20%.
11. Before installing the tooling, always check whether the machine's limited travel is greater than the total height of the upper and lower tools to prevent damage to the tooling and work-related accidents.
12. Before aligning the tooling, check if the mold is properly locked, and recheck the locking degree after alignment.
13. Never leave unused tooling on the equipment to prevent tooling from falling and causing damage or injury.
13. After using the tooling, promptly return it to the designated tool rack and keep it organized.
14. It is strictly prohibited to install two different height tooling on the equipment simultaneously.
15. Regular maintenance and labeling should be carried out for the tooling in the section.
To guide bending personnel in the rational selection of tooling, improve the tool's lifespan, and reduce abnormal tool wear.
Benefits:
Shorten the tool selection time for bending, improve production efficiency, and reduce costs.
Applicable Scope:
Sheet metal bending section.
Content:
1. Common upper tools for bending include: 88° straight tool (R1), 30° pointed tool/straight pointed tool (R1/R0.5), 88° bend tool (R1), 88° straight bend tool (R1/R0.5), flattening die, and dedicated upper tools.
2. Common lower tools for bending include: single/double V lower tools with angles of 30° and 88°, V4, V6, V7, V8, V10, V12, V16, V25 (mm).
3. The selection of bending tools is generally based on the arrangement of bending tool sequences after reviewing the drawings.
4. Selection of upper tools based on the angle:
4.1 When the processing angle is greater than or equal to 88 degrees, upper tools with angles less than 88° can be selected (e.g., straight tool, pointed tool/straight pointed tool, bend tool, straight bend tool, etc.).
4.2 When the processing angle is less than 88 degrees, a 30° upper tool (e.g., pointed tool/straight pointed tool) should be used.
4.3 When edge crushing is required, a pointed tool/straight pointed tool can be used to form a sharp angle (usually 30 degrees), followed by flattening with a flattening die to crush the edge.
4.4 When the plate thickness exceeds 3mm, it is advisable to avoid using pointed tools/straight pointed tools to prevent damage to the tools.
5. Selection of upper tools based on the required shape:
When b-a≧5mm, straight pointed tools, straight tools, bend tools, and straight bend tools can be used.
When 1mm﹤b-a﹤5mm, bend tools and straight bend tools can be used.
When b-a﹤1mm, a bend tool can be used.
Note: 100mm﹥a, b﹥6mm are internal dimensions.
When Z-shaped processing is required, straight tools, pointed tools/straight pointed tools, straight bend tools, and bend tools are usually used.
If you want to obtain a sheet metal unfolding video, please send me a private message with the word "tutorial."
6. Selection of lower tools:
6.1 Generally, the size of the V-groove is selected as 6 times the plate thickness.
6.2 Selection of lower tools based on the angle: When the angle is greater than or equal to 88 degrees, 88° and 30° lower tools can be selected; when the angle is less than 88 degrees, a 30° lower tool should be used (measure the effective height of the upper tool: the distance from the force surface of the upper tool clamp to the edge).
7. When joining upper and lower tools, the following points should be noted:
7.1 During selection, molds with inconsistent heights should not be mixed to avoid poor angles or even damage to the tooling, leading to work-related accidents.
7.2 When selecting upper tools for edge-banded door panels, product quality and ease of handling should be considered. Generally, a gap of 3-6mm is left at both ends (the need for a "side tool" should be considered if necessary).
7.3 Avoid using damaged molds for product processing to prevent poor appearance. After installing the upper tool, check the straightness and smoothness of the cutting edge.
7.4 When avoiding positions, pay attention to the appearance quality issues such as indentation and improper angles.
8. Selection of tooling under abnormal conditions:
8.1 When bending lines, use pressure-resistant pointed tools for the upper tool and ensure that the lower tool is aligned and without steps.
8.2 When processing U-shapes and the inner dimension is smaller than 6mm, use a bend tool to create an opening larger than the second tool size, then flatten it to ensure the size, or use a dedicated mold for shaping.
8.3 When there are specific requirements for internal R-round corners of the processed products, consider matching upper tools with the corresponding R-round corners in advance (e.g., R0.3, R1, R4, R8, or R10 for the internal R-corner).
8.4 When the plate thickness is 2.0 and a 6mm fold is required, use an 88° V8 lower tool. When the plate thickness is 3.0 and a 10mm fold is required, use an 88° V12 lower tool to prevent the workpiece from slipping and being unprocessable due to excessively small dimensions.
8.5 When processing round steel, dedicated tooling should be used, and there should be a dedicated operator.
9. It is advisable to avoid joining upper and lower tools as much as possible to prevent joint marks that may affect the appearance of the product.
10. When aligning upper and lower tools, use molds with a length of 300mm or greater for alignment. It is strictly prohibited to use small or less than 300mm tooling for alignment. The length difference between upper and lower tools should not exceed 20%.
11. Before installing the tooling, always check whether the machine's limited travel is greater than the total height of the upper and lower tools to prevent damage to the tooling and work-related accidents.
12. Before aligning the tooling, check if the mold is properly locked, and recheck the locking degree after alignment.
13. Never leave unused tooling on the equipment to prevent tooling from falling and causing damage or injury.
13. After using the tooling, promptly return it to the designated tool rack and keep it organized.
14. It is strictly prohibited to install two different height tooling on the equipment simultaneously.
15. Regular maintenance and labeling should be carried out for the tooling in the section.
