A CNC flat bar punching and cutting setup can be configured for several bar widths when the tooling arrangement, workpiece positioning, feeding method and cut-off sequence are planned around the full range of parts. The key is to design the process around the actual drawings and samples rather than treating every width as a separate production job.
One Goldensea customer supplied samples with different hole patterns, angled punching requirements and cut-off requirements. The resulting configuration uses one shared punching die set for flat bars measuring 20 mm, 30 mm, 40 mm, 50 mm and 60 mm in width, with material thicknesses from 6 to 8 mm. It also combines automatic feeding with punching and cutting in one machine. Goldensea describes the intended benefit as less manual work and fewer punching die changes.
Watch the Customer Project Video
See the customer samples and Goldensea’s customized machine in the short project video. The video shows the customer samples and the customized CNC punching and cutting machine.
Why Multiple Flat Bar Sizes Need a Planned Setup
A factory may produce several flat-bar widths for different components or customer orders. Even when the parts use the same material family, each size can bring different positioning and handling requirements.
The machine setup should account for four connected areas:
- Width and workpiece support: The bar must be presented consistently to the punching position. Different widths can affect the reference edge, guide position and support arrangement.
- Material thickness: Thickness and material grade influence the punching load and the tooling arrangement required for the job.
- Hole layout: Hole dimensions, spacing, edge distance and the location of each feature determine the programmed punching positions.
- Finished-part length: Cut-off requirements influence the order of operations and how the workpiece is positioned before separation.
Planning these details together helps create a repeatable process for a mixed-size production schedule.
How One Shared Punching Die Set Can Serve Different Widths
In this customer-specific configuration, one shared punching die set is specified for five flat-bar widths:
| Flat-bar width | Material thickness |
|---|---|
| 20 mm | 6–8 mm |
| 30 mm | 6–8 mm |
| 40 mm | 6–8 mm |
| 50 mm | 6–8 mm |
| 60 mm | 6–8 mm |
This is a specific customized configuration, not a universal specification for every flat-bar punching machine or every material.
A shared tooling arrangement can reduce the need to exchange complete punching die sets when production moves between the listed sizes. The practical setup still needs to account for the workpiece reference, guides, clamping position and programmed hole coordinates. The exact adjustment method depends on the machine design and the customer’s drawings.
For a new project, provide samples from the smallest and largest widths as well as the most frequently produced part. This gives the engineering team a clear view of the width range and the hole features that the tooling must accommodate.
Automatic Feeding and Consistent Positioning
Automatic feeding helps move flat-bar material into the punching area according to the programmed processing sequence. For a multi-size job, the feeding arrangement needs to work with the dimensions and reference points of each workpiece.
The main information to define includes:
- The overall length and width of each flat bar.
- The reference edge or centerline used to position the hole pattern.
- The distance from the leading end to the first hole.
- The spacing between successive holes.
- The finished length and the position of the cut-off point.
- The support and guide arrangement needed for the material being processed.
Clear drawings make it easier to coordinate feeding distance, punching positions and cut-off location. If several part drawings share a common reference, identify that reference consistently across the drawing set.
Different Hole Patterns and Angled Punching
A flat-bar sample may contain several hole patterns, and a customer may also require angled punching or other non-standard features. These details should be shown clearly on the drawing before the machine and tooling arrangement is finalized.
For each hole or feature, provide:
- Hole shape and dimensions.
- Position measured from a defined edge or datum.
- Hole-to-hole spacing.
- Edge distance.
- The orientation of any angled feature.
- The relationship between the hole pattern and the finished cut length.
The term “angled punching” can describe different geometries. A drawing should make clear whether the requirement concerns the orientation of the hole, the position of the feature on the flat bar, or the angle of the workpiece during processing. A sample is useful when the geometry is difficult to communicate with dimensions alone.
Combining Punching and Cut-Off in One Machine
The Goldensea customer configuration combines punching and cutting in one multifunctional CNC machine. This allows the required hole-making and cut-off operations to be planned as one coordinated production process.
The operation sequence depends on the part drawing. For example, the machine arrangement needs to define where the holes are positioned relative to the material end, when the finished length is established and how the part is supported during processing.
When preparing a project, specify:
- Required finished-part length.
- Whether the cut is straight or has a defined end profile.
- The position of the cut relative to the last hole.
- Whether several different cut lengths are required.
- How finished pieces should be collected after cutting.
The exact cutting method and dimensional tolerance should be agreed for the intended application.
What Determines Output in Multi-Size Flat Bar Production?
A machine’s punching stroke rate alone does not describe the number of finished parts a factory can produce. The actual production cycle also depends on the part geometry and the material-handling sequence.
Important factors include:
- Number of holes per part: More punching positions generally require more machine operations.
- Hole layout: Different spacing and feature orientations affect the programmed feeding and positioning sequence.
- Material and thickness: The material grade and thickness influence the punching process and tooling selection.
- Feeding distance: Longer movement between features adds time to the overall cycle.
- Cut-off requirements: Cut position, cut length and the selected cutting method affect the process sequence.
- Size changes and setup: Moving between different widths may involve positioning or guide adjustments, depending on the machine arrangement.
- Loading and collection: The way raw bars are supplied and finished parts are removed also affects total production time.
For this reason, a useful production estimate should be based on representative part drawings, material details and the complete feeding–punching–cutting sequence.
What Information Should You Send for a Flat Bar Punching Solution?
To review a multi-size flat-bar application, prepare the following information:
| Information | What to provide |
|---|---|
| Material | Material grade and condition |
| Flat-bar sizes | Width and thickness for each specification |
| Workpiece length | Raw bar length and finished-part lengths |
| Hole patterns | Hole shape, dimensions, spacing and edge distances |
| Angled features | A drawing or sample showing the required orientation |
| Cutting | Cut-off position, end shape and required tolerance |
| Production mix | Part quantities, batch sizes and frequency of size changes |
| Automation | Feeding method and finished-part collection requirements |
If possible, send samples representing the smallest and largest sizes and one part with the most complicated hole pattern. Goldensea can review the workpiece range and discuss a suitable tooling, feeding and cutting arrangement.
Frequently Asked Questions
Can one CNC punching die set process different flat-bar widths?
A shared punching die set can be configured for a defined range of flat-bar widths. In the Goldensea customer configuration described here, the stated widths are 20 mm, 30 mm, 40 mm, 50 mm and 60 mm, with thicknesses from 6 to 8 mm. The setup and positioning requirements should be defined from the actual workpieces.
Does using one shared die set mean that no adjustments are required?
Not necessarily. A shared die set reduces the need to exchange complete tooling sets, while workpiece positioning, guides or programmed references may still need to be set for each size. The adjustment sequence depends on the machine arrangement.
Can a flat-bar punching machine also cut the material?
Goldensea’s described customer configuration combines punching and cutting in one machine. The required cut length, end geometry and operation sequence should be included in the part drawing.
What should I provide for angled punching requirements?
Send a dimensioned drawing and, where possible, a physical sample. Identify the angle reference, hole geometry, edge distance and relationship to the finished-part length.
How can I estimate production output?
Provide representative drawings, material grade, thickness, hole count, feeding distances, cut-off requirements and batch sizes. These details allow the complete process cycle to be reviewed rather than estimating output from punching speed alone.
Discuss Your Flat Bar Processing Requirements with Goldensea
Need to process several flat-bar sizes with a coordinated punching and cutting workflow? Send Goldensea your samples, drawings, material grade, thickness range, hole patterns and required cut lengths.
Explore our Flat Steel Punching Production Lines, read the CNC Punching Machine Guide, or contact Goldensea with your drawings and samples to discuss a suitable machine configuration.
