HSM





The LEMOINE HSM makes it possible to greatly reduce the hand finishing time and effort required for 3D contoured parts. Since HSM allows the machine to feed 2 to 3 times faster in finish cut while maintaining accuracy it is possible to double the number of picks taken on the job, thus producing a cusp height four times smaller in the same machining time as before	LEMOINE HSM has been designed to overcome the contouring feedrate and accuracy limitations placed on both old and new machines whose CNC or Duplicating control is not capable of high-speed milling complex 3-D parts such as molds, dies, electrodes etc. The combination of a HSM unit and a reliable mechanical spindle speed multiplier or auxiliary high speed spindle allows you to achieve a much higher order of productivity from your existing machinery without a prohibitive investment. In almost all cases the HSM unit provides a smoother and gentler motion control for a machine than its own native CNC. Feedrates are progressively slowed as corners are negotiated and gently accelerated in areas that will allow faster passing without error.
The LEMOINE* HSM is wired directly to the machine servo measuring systeme thus bypassing the limitations of the native control.*	Lemoine HSM runs directly the machine axis, the software calculates from the ISO files a new ideal path and predetermines the tool position and path in order to calculate the best feedrate and adapts in advance to cater for delicate work, therefore giving a very high level of precision to the finished piece.

HSM is possible not only on small aluminium parts...	Feedrate is hence greatly increased in relation to the machine administered commands (centrifugal + tangential). In these conditions feedrates are always optimised in function of the machine ability and milling accuracy needed. The acceleration rates used are progressive so that the limitations on the machine elements are constant. Even at these new higher speeds, the mechanical and electronic service parts suffer less. Experience shows that tools also last longer.
....but on large tool steel moulds and cast iron dies as well.
	Whilst still connected and under the command of the Numerical Control by DNC(1) the system can be switch between LEMOINE mode and NC mode (tool change, palet change, drilling cycles, tapping, etc...) and come back to Lemoine axis control.

	⁽¹⁾ (on certain machines only, contact us )


	HSM what's unique ? Lemoine’s HSM provides remarkably high feedrate and part program through out while maintaining accuracy found only at much slower rates with other CNC units. In addition, the machine operator is provided with flexibility that increases his productivity. Windows may be created in a program which can "isolate" for machining or exclusion. Roughing routines (lace and box) may be created from a CAM generated finish program. Existing programs may be scaled or rotated. Offsets for X, Y and Z axis may be entered at the machine. 2 D radius compensation. The above mentioned functions give the operator flexibility allowing him to cope with unexpected situations directly at the machine. The technician can, without wasting any time modify the tool path or start again after an incident from the spot where stopped without having to program the toolpath again at the CAM station. Cutter path can be visually verified with a Lemoine graphic program. Lemoine HSM is : Sensitive to machine inertia and mechanical loading. Servo preformances capabilities. Operator specifield tolerances for machining. The feedrate is calculated and updated as a function of : Potential acceleration of machine tool. Geometry that is being machined. Required machining tolerance. Lemoine HSM looks forward along the path, far enough to avoid possible overshoots. How fast ? Peak contouring feedrates of 10 meters per minute are not unusual when HSM is used on cutting dies. In mold applications, users have experienced feeds up to 6 meters per minute with excellent results. The maximum feedrate limitation is dictated by the particular machine construction and servo system capability. Milling functionality Milling windows. Scales factor. Roughing process. Mirroring, rotations. Milling translation. Offset and multiple set home. Upper and lower limit. Milling files liking. Tools table (255 tools) for length and diameter compensation. Offset during milling with handwheel Possibility to change some parameters during milling in real time. Start and stop point. Part alignment.