// Quality Products
Notching machine
Notching is used for the production of rotor and stator laminations using the single-slot process. This process is mainly used for the production of electric motors and generators.
The high precision of our notching machines achieves a pitch accuracy that significantly influences the quality of your products.
Our customised solutions are suitable for any production task, whether it is a stand-alone system or a fully automated production line. Our notching machines can be flexibly customised to your requirements and enable efficient and cost-effective processing of your electrical sheets.
Rely on Made in Germany and our decades of expertise in stamping and forming technology – your reliable partner for precision.
Contact us today and find out how our grooving presses can take your production to a new level.
HIGH PRODUCTIVITY
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// MADE IN GERMANY
// Options
Notching machine
Soundproof cabin
The soundproof booth can be configured either for a single notching machine or as part of a fully automated production line. This significantly reduces noise pollution.
Height-adjustable tool table
A manually height-adjustable tool table is used to correct the infeed height when regrinding a tool.
Notching waste control
Monitoring of the scrap chute, falling punched parts are detected in order to recognise a backlog of punching waste in good time.
Automatic tool clamping
Automatic tool clamping simplifies the set-up process and enables precise mechanical installation of the tool in the grooving press.
Board clamping by means of mandrel in holder
Blanks that are picked up by a mandrel can be clamped with an expanding mandrel developed by us and can therefore be run without a hold-down device.
Double sheet control
Inserted sheets are checked for sheet thickness before punching to prevent the accidental insertion of two components.
Tool lubrication
Automated spraying device that enables precise and economical application of an oil film before punching.
Controlled tool
Tool with two or more integrated punches that can be individually controlled to perform several notching passes in one clamping operation. In most cases, the pitch circle is also adjusted dynamically between the passes.
Marking notching
Embossing devices can mark the sheets according to customer requirements.
Partial package production
A motor can be constructed in various sub-packages of laminations. Each package can be different.
The sheet packs are automatically produced in the correct sequence.
Intermittent
With intermittent notching, notches can be cutted in blocks.
With asymmetrical intermittent machining, the cutt out´s pattern can be programmed completely freely.
Two-position notching
Notches are punched with a two-stage punch that is offset in height. Depending on the immersion depth, one or both punches are used for punching. This makes it possible to punch additional and different features such as air holes or markings in a single pass.
Spiral notching
The groove pattern is offset for each sheet depending on the angle. This creates a continuous groove in the form of a spiral in the finished sheet stack.
Notching widening
With notching widening, a notch is cutted twice with an offset in order to widen it. This may be necessary to create a run-out radius at the end of the stack of sheets.
// Universally applicable
Notching machine
In this application example, the notching machine is specially designed as a manual insertion machine. Particular emphasis was placed on ergonomic design and easy handling for the operator.
The tool frame of the notching press can be automatically clamped and aligned using pneumatic clamps, thus ensuring a secure and positive connection.
The special O‑frame design enables a very high rigidity of the machine frame.
Sound insulation has also been integrated to reduce acoustic noise in the working environment. The notching machine therefore fulfils the requirements for a powerful and user-friendly solution for manual insertion operations.
The optional pneumatically clamped drive pins, depending on the holder, ensure precise positioning of the workpieces during cutting and also enable a notching process in which no hold-down device is required.
Tools are changed from the rear of the machine with the best possible accessibility and ergonomics.
The simple and intuitive HMI enables easy set-up and safe operation of the machine.
// Hagel Automation
Latest news
Hagel Automation receives “Certificate of Excellence”
Sep 2024| Hagel Automation receives “Certificate of Excellence” We were awarded a Certificate of Excellence by a customer for the successful completion of a project to supply a grooving centre. The outstanding work quality of our team, which worked with full commitment and not only met but exceeded the customer’s expectations, was particularly recognised.…
Visitor days at Hagel Automation
June 2024| Hagel Automation invites customers to view the latest developments and current projects in calendar weeks 24 and 25. Customers will have the opportunity to experience our state-of-the-art production facilities and the most advanced automation technologies up close. Our experts will be on hand to answer questions and provide detailed insights into our innovative processes.…
Transfer Retrofit USA
June 2024 | We are carrying out a retrofit of a transfer system for a customer in the USA. The planning and design have already been successfully implemented. The system is currently well stowed on the sea route to the USA. The planned installation date is the beginning of July. More news to follow…
Slot punching centre successfully put into operation
June 2024 | We have successfully commissioned the first grooving centre for our customer in Germany. The state-of-the-art system, which is equipped with two single grooving lines connected in series and two 200KN grooving punches, is running at full capacity. The system includes a grooving line that can punch sheets with a diameter of up to 1400mm. Centre 1 can…
Transfer system for a 5 metre press table
DEZ 2023 | We have built a transfer for a customer in the Czech Republic. The transfer system was integrated into a press which has a 5m press table. The control of the transfer was planned, installed and commissioned by us
Slotting centre 1400mm
Dec 2023 | For a customer in Germany, we are currently manufacturing a slotting centre that includes two single slotting machines connected in series. The system is equipped with two 200KN grooving centres. The entire project includes two completely independent slot punching automations Centre 1 can punch a sheet diameter of 1400mm Centre 2 can punch a sheet diameter of 1000mm
Feeder between C‑frame presses
JAN 2022 | Telescopic feeder successfully installed between C‑frame presses in the automotive sector in Germany.
Tandem grooving machine installed
DEC 2021 | We have installed a tandem grooving press for a customer in the Czech Republic, which can be used in single or tandem operation. Two 160KN grooving punches are installed in the system.
Press system with automation
NOV 2021 | We have installed a 300 tonne press for a customer in the automotive sector in Germany. The automation sequence of the system includes: Blank loader, gripper feed & transfer.
// HAIL AUTOMATION
Hagel Automation in figures
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Employees at the Grünkraut site0
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Years of experience// FAQ
Questions and answers
Normally, a tool change on a grooving press takes less than 10 minutes.
A grooving press produces rotor and stator laminations for electric motors and generators using the single grooving process.
The stamped metal sheets are assembled into packages and then wound or moulded and assembled into a motor or generator.
Slot punches are used to manufacture electrical laminations (stators and rotors) for electric motors.
A single groove is punched into a circular sheet using a punching tool.
The sheet is then fed through a feed device (dividing head) by one division – the punching process is repeated.
Depending on the pitch, between 30 and 100 punching operations are carried out per sheet until the finished sheet is produced. This takes place at a stroke rate of 600 to 1200 punching operations per minute.
The production of sheet metal using the single grooving process is considerably cheaper and more flexible compared to a mould with a complete cut.
As a rule, the grooving press is operated at 600 to 1200 strokes per minute. This depends on the size and complexity of the component.
We currently offer grooving punches in a range of 5 – 20 tonnes punching force.
Slot punching at the highest level and maximum precision and output. The patented design of the grooving press enables high rigidity and optimum conditions for good automation.
Thanks to the drive technology used, there are no more wearing parts on the grooving press.
We offer customised solutions for the mechanical and electrical modernisation of old grooving presses. In addition, existing grooving presses can be retrofitted with our automation concepts.
Depending on the size and degree of automation, the output of our systems is between four and ten sheets per minute.
It usually takes around 10 months from ordering to delivery of a grooving machine. We often have a demonstration machine in-house that is available at short notice.
The grooving machine has a modular design and is very easy to maintain, as the grooving machine no longer has any wearing parts.
Hagel Automation specialises in the design and construction of slotting machines and the entire automation process. Hagel Automation supplies efficient, modern and highly precise slotting machines.
The costs depend on the required punching force, the equipment and the degree of automation of the grooving press. We are able to prepare a quotation for any application at short notice.
Approx. 4000 to 7000 kg.
Production of electrical sheets for motors and generators for wind power, hydropower and drive technology.
A single groove is punched into a circular sheet using a punching tool.
The sheet is then fed through a feed device (dividing head) by one division – the punching process is repeated.
Depending on the pitch, between 30 and 100 punching operations are carried out per sheet until the finished sheet is produced. This takes place at a stroke rate of 600 to 1200 punching operations per minute.
Currently, sheet metal with a diameter of 35 mm to 1300 mm is processed on grooving machines. The current trend is towards larger diameters of up to 1800 mm.
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// RANGE OF SERVICES