CONSTRUCTION OF HMP ROTARY SWAGING MACHINES
ROTARY SWAGING MACHINES ARE HIGH-SPEED DISPLACEMENT-CONTROLLED MACHINES
Die strokes follow the HMP principle: they are generated by a cam control. These kinematics are generated at the heart of the swaging machine, the swaging unit.
The outer strikers run under the rollers and inward pressure is exerted on them. This pressure is transferred radially to the die and workpiece. The forming force is produced as a reaction to the stroke that is set. HMP swaging units have the following advantages: The cams on the outer strikers have a trigonometric profile. This ensures the rollers run smoothly over the outer strikers. Rollers in the HMP system are actively driven and rotate continuously. This prevents them any rebound off the outer strikers on impact. Where there is sufficient installation space, HMP constructs roller cages with 16 rollers.
Minimized outer strikers wear: HMP outer outer strikers are durable wear parts and require no intermittent heat treatment during their useful life. This keeps service and maintenance costs for HMP machines low. Low elastic energy loss: The force-stroke curve minimizes elastic energy loss and increases efficiency. HMP rotary swaging machines therefore utilize energy to optimum effect. High die stroke frequency: This optimizes the forming process with regard to homogeneity and friction.
Internal rotating system:
Stationary support ring - rotating working shaft: The classic construction: robust and simple. As the workpiece would twist when engaging with the die, it needs to rotate in the clamp with controlled slip.
External rotating system:
Rotating support ring - stationary working shaft: When rotationally symmetrical workpieces are to be produced, the workpiece must be actively driven. This construction is preferable for the production of non-circular contours.
Double rotating system:
Support ring and and working shaft rotate in opposite directions: The stroke frequency is independent of the rotational speed of the working shaft, which decouples the torsion load in the workpiece. This system is particularly suitable for workpieces sensitive to torsion.
CONSTRUCTION OF ROTARY SWAGING MACHINES
HMP ROTARY SWAGING MACHINES
We work with our customers to develop HMP machine concepts. Our modular machine concept enables machines to be equipped with systems that are tailored to our customers' requirements and meet the quality standard of series production machines. We implement production solutions for components that are developed with the customer in a process of simultaneous engineering.
Modular machine concept
Rotary swaging can be combined with other processes according to requirements. Depending on the application, a rotary swaging machine may consist of several stations and units that are modular in design.
The swaging unit is the main part of the machine. Different versions and sizes are available according to the shape and size of the component that will undergo the forming process.
This is used to feed the workpiece into the swaging unit. The feeding system is an important part of the machine and is designed, manufactured and assembled by our company. They display an extremely high level of axial stiffness. It is very important that the workpiece is clamped correctly for processing.
The machine base supports various machine units. But the function of a HMP machine base goes beyond this: it is designed to minimize space between the base and workpiece as much as possible. This creates a stiff C-frame arrangement between the swaging unit, feeding system and base that allows HMP machines to cope with high axial forces.
The mandrel device is generally mounted on the feeding system. Mandrel movements are usually hydraulic. Spindle drives are also used for precise positioning and CNC system integration.
This device is located at the rear of the swaging unit and is designed to limit axial material flow. It may also incorporate a mandrel or serve as a workpiece ejector.
HMP machines can be equipped with either PLC or CNC controls.
Handling systems for HMP's single and multi-station machines have been developed by us and are adapted to the special requirements of the rotary swaging process. The handling system takes workpieces from a magazine or infeed conveyor, passes them by overhanging transfer grippers to to the the station feeder clamps and after the last station, places them on the discharge conveyor after processing. HMP handling systems have key advantages: Accessibility: The handling system can move out of the way when the machine is being set up or during maintenance work, which ensures optimum accessibility. Robustness: The handling system is situated above the machining area. This eliminates unnecessary transverse movements and the risk of damage caused by falling parts.
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