Monday, October 30, 2006
Twin machining centre system performs end-working
The CNC machining centre is for the machining of the ends of various types of components simultaneously and is the most recent evolution of the classical end-working machine for the machining of the extremities of bars, forgings, tubes, etc. Thanks to this evolution, this machine-tool is making a 'technological impact' placing itself at the level of the most advanced machine-tool products and, being able to solve the most different applications of more demanding companies. The machine concept is a reply to those companies who require the availability of the modern engineering manufacturing processes.
Machining both ends without moving the component - the MC 650 machining centre, produced by CAORLE, is a CNC machine with 6 controlled axis (3 + 3): the longitudinal 'Z' (Z1-Z2), the transversal 'X' (X1-X2) and the vertical 'Y' (Y1-Y2).
It works by means of two operating units and two tool-changer facilities and it was conceived and designed for the machining of the extremities.
The MC 650 - said Alberto Caorle, managing director of the Company, 'Has to be considered the evolution of the concept of the simple end-working machine, a type of machine which was always considered as a secondary machine but now, thanks to this new advanced project, it has become a true machining centre qualified for any kind of machining on the extremities of the most varied types of components and for the most different types of industrial sectors.
Using MC 650 it is possible to complete finished-machining and complex machining by interpolation (threading, facing, drilling, routing, execution of keys, etc.) without having to move the work piece.
Different examples of applications, from the machining of finished extremities (threads, chamfers, 'little channels') on the bodies of sunken pumps, which are polished pipes of stainless steel, to the machining of finished extremities (facing, drilling, tapping of the various holes on the end, execution of 'channels' and keys) of camshafts: for both there is not a need of a further machining on a lathe.
In particular, for one of our important customers involved in the 'automotive field', we have supplied machines equipped with customized facilities able to execute facing and centering with reference to the cams, in order to share the stock metal in a balanced way for a better off execution of the following machining.
Tooling breakage control devices (for drills and taps) are also present.' A double machining centre - the bed is an electro-welded and normalized structure made of a thick section heavy duty steel plate, strategically reinforced for obtaining a maximum stiffness and rigidity; the longitudinal guideways (flat guideways with a 'T' shape of 100mm surface) mounted on the bed are made of a hardened steel.
The two cast iron saddles units slide above these guideways and on the same guideways are located the self-centering jaws.
The saddles are driven and positioned by precision ball-screws and AC brushless servo motors Siemens.
The two longitudinal box-type guideways and the spindle unit are made of cast iron, the vertical upright is an electro-welded structure.
'We have developed a machine-tool,' continued Caorle 'that has to be extremely rigid in order to assure the maximum machining quality, so that we have used cast iron for the production of all those components with a need of high rigidity and also for the absorption of the vibrations'.
Each one of the two machining units (MC 650 is equipped with two independent powered and horizontally opposed machining units) consists of: a longitudinal saddle unit made of cast iron with the surface in contact covered with a special antifriction material; a transversal saddle unit mounted above strong and dimensioned rollers re-circulation slide-shoes (on this saddle is also mounted the tooling stock group); a vertical saddle unit is mounted above strong and dimensioned rollers re-circulation slide-shoes and there is also installed the support for the ISO50 spindle (the spindle is equipped with a fast hydraulic unclamping device) together with its motor; an oil-dynamic balancing device for the vertical saddle.
The two spindle units are designed for the axial flow of the coolant through the spindle, in addition to the external one on the machining area.
'The two operating units,' said Caorle, 'Are located exact opposite each other so that the spindles are horizontally positioned, facing one to the other one; these two groups are positioned on the same guideways of the steel-bed, which means that the two operating units are displaced on the same longitudinal axis.
On these guideways is mounted a pair of self centering jaws for blocking the workpieces: bars, pipes, forges, crankshafts, camshafts, ranks, axle shafts and so on.' The vice-jaws customize the machine - the self centering blocking jaws are mounted on the longitudinal guide ways and they work by means of an hydraulic device; the related positioning is made by an hydraulic hooking up (hydraulic blocking/de-blocking system on the guide ways); a system of automatic hooking up of the jaws to the working unit allows to move them to the desired position and, by means of an automatic de-blocking procedure, the unit leaves the jaws which block itself to the guideways of the steel bed.
The structure of the jaws is made of a cast iron body, on which are mounted the hardened steel sliding guide ways and where the blocking vices move themselves.
All the movements are automatically lubricated by means of a centralized systems; the positioning of the jaws is carried out by means of the operating units; hydraulic is the blocking systems device.
The precision heavy duty hardened and ground vice jaws allow to block large components thanks also to the possibility of specific set of jaws.
'An interesting application which has required a customisation of the jaws,' said Caorle, 'It was when we had to machine the extremities (drilling and tapping) of different types of racks (from a size of 25/30mm of side up to a maximum of 250mm) and we had to consider that, each machined piece, was going to be connected to the following one in order to obtain very long racks.
In fact, whereas the classical concept of end-machining consider the use of jaws for clamping round pieces, having to machine racks (of squared or rectangular shape) is necessary to use flat jaws, with reference to the tooth angular shape.
Thanks to the achievement of a clamping system for the workpieces with reference to their teeth, the required machining have been carried out by means of only one positioning of the piece into the machine- tool and obtaining in this way a really short cycle time, but above all with the great advantage of the results obtained in terms of quality.
Machining both ends without moving the component - the MC 650 machining centre, produced by CAORLE, is a CNC machine with 6 controlled axis (3 + 3): the longitudinal 'Z' (Z1-Z2), the transversal 'X' (X1-X2) and the vertical 'Y' (Y1-Y2).
It works by means of two operating units and two tool-changer facilities and it was conceived and designed for the machining of the extremities.
The MC 650 - said Alberto Caorle, managing director of the Company, 'Has to be considered the evolution of the concept of the simple end-working machine, a type of machine which was always considered as a secondary machine but now, thanks to this new advanced project, it has become a true machining centre qualified for any kind of machining on the extremities of the most varied types of components and for the most different types of industrial sectors.
Using MC 650 it is possible to complete finished-machining and complex machining by interpolation (threading, facing, drilling, routing, execution of keys, etc.) without having to move the work piece.
Different examples of applications, from the machining of finished extremities (threads, chamfers, 'little channels') on the bodies of sunken pumps, which are polished pipes of stainless steel, to the machining of finished extremities (facing, drilling, tapping of the various holes on the end, execution of 'channels' and keys) of camshafts: for both there is not a need of a further machining on a lathe.
In particular, for one of our important customers involved in the 'automotive field', we have supplied machines equipped with customized facilities able to execute facing and centering with reference to the cams, in order to share the stock metal in a balanced way for a better off execution of the following machining.
Tooling breakage control devices (for drills and taps) are also present.' A double machining centre - the bed is an electro-welded and normalized structure made of a thick section heavy duty steel plate, strategically reinforced for obtaining a maximum stiffness and rigidity; the longitudinal guideways (flat guideways with a 'T' shape of 100mm surface) mounted on the bed are made of a hardened steel.
The two cast iron saddles units slide above these guideways and on the same guideways are located the self-centering jaws.
The saddles are driven and positioned by precision ball-screws and AC brushless servo motors Siemens.
The two longitudinal box-type guideways and the spindle unit are made of cast iron, the vertical upright is an electro-welded structure.
'We have developed a machine-tool,' continued Caorle 'that has to be extremely rigid in order to assure the maximum machining quality, so that we have used cast iron for the production of all those components with a need of high rigidity and also for the absorption of the vibrations'.
Each one of the two machining units (MC 650 is equipped with two independent powered and horizontally opposed machining units) consists of: a longitudinal saddle unit made of cast iron with the surface in contact covered with a special antifriction material; a transversal saddle unit mounted above strong and dimensioned rollers re-circulation slide-shoes (on this saddle is also mounted the tooling stock group); a vertical saddle unit is mounted above strong and dimensioned rollers re-circulation slide-shoes and there is also installed the support for the ISO50 spindle (the spindle is equipped with a fast hydraulic unclamping device) together with its motor; an oil-dynamic balancing device for the vertical saddle.
The two spindle units are designed for the axial flow of the coolant through the spindle, in addition to the external one on the machining area.
'The two operating units,' said Caorle, 'Are located exact opposite each other so that the spindles are horizontally positioned, facing one to the other one; these two groups are positioned on the same guideways of the steel-bed, which means that the two operating units are displaced on the same longitudinal axis.
On these guideways is mounted a pair of self centering jaws for blocking the workpieces: bars, pipes, forges, crankshafts, camshafts, ranks, axle shafts and so on.' The vice-jaws customize the machine - the self centering blocking jaws are mounted on the longitudinal guide ways and they work by means of an hydraulic device; the related positioning is made by an hydraulic hooking up (hydraulic blocking/de-blocking system on the guide ways); a system of automatic hooking up of the jaws to the working unit allows to move them to the desired position and, by means of an automatic de-blocking procedure, the unit leaves the jaws which block itself to the guideways of the steel bed.
The structure of the jaws is made of a cast iron body, on which are mounted the hardened steel sliding guide ways and where the blocking vices move themselves.
All the movements are automatically lubricated by means of a centralized systems; the positioning of the jaws is carried out by means of the operating units; hydraulic is the blocking systems device.
The precision heavy duty hardened and ground vice jaws allow to block large components thanks also to the possibility of specific set of jaws.
'An interesting application which has required a customisation of the jaws,' said Caorle, 'It was when we had to machine the extremities (drilling and tapping) of different types of racks (from a size of 25/30mm of side up to a maximum of 250mm) and we had to consider that, each machined piece, was going to be connected to the following one in order to obtain very long racks.
In fact, whereas the classical concept of end-machining consider the use of jaws for clamping round pieces, having to machine racks (of squared or rectangular shape) is necessary to use flat jaws, with reference to the tooth angular shape.
Thanks to the achievement of a clamping system for the workpieces with reference to their teeth, the required machining have been carried out by means of only one positioning of the piece into the machine- tool and obtaining in this way a really short cycle time, but above all with the great advantage of the results obtained in terms of quality.
# posted by Medical Information : 1:57 AM
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