Quick change in sliding head machines
Due to the compact nature of sliding head machines, space for tool changing is limited. Often, shank tools need to be removed to index the insert, which increases the set-up time compared to conventional turning centers.
Quick change, such as the QS™ holding system, maximizes active production time in sliding head machines compared to conventional shanks. The tool can be removed from the machine for insert indexing, and with the fast and accurate return, you can start running immediately, without the need for setting/measuring.
Quick setting of boring bars
Setting boring bars in the turret takes more time compared to a shank tool due to length/center height positioning as well as plumbing through coolant into the back of the tool.
Sleeves such as EasyFix provide a fast and simple way of achieving correct center height when mounting cylindrical boring bars into the machine. A spring plunger solution mounted in the sleeve clicks easily into a groove in the bar to guarantee the correct center height, ensuring consistently high-quality parts.
The sleeve is available in a metallic sealed version for high-pressure coolant, as well as the original, with a slot filled with a silicon sealer for low coolant pressures.
Quick change with Coromant Capto®
Coromant Capto® is a modular, quick change tooling concept that ensures that both machine utilization and metal-cutting efficiency are maximized. Below are some of the key benefits of Coromant Capto®.
The camshaft-activated drawbar is used for both locking the coupling with segment clamping and for pushing out the cutting head. Only a ½ turn is needed to lock and unlock the manual clamping unit. The camshaft has a self-locking angle and will not open during machining.
The high precision of the coupling and its self-centering design ensures repeatable accuracy within less than ±2 microns along the x-, y- and z-axis for the same cutting unit in the same female receiver.
This allows pre-setting outside the machine for high batch production or tool kits for batch changeover. Both eliminate measuring cuts, allowing faster start-up and reduced scrap rates.
Coromant Capto® quick change calculator
Stability is measured in terms of bending stiffness and torque transmission. The key features providing superior stability are:
- Face and taper contact: Resisting bending moments and providing positional accuracy
- Polygon coupling: The large contact area transmits torque without any loose parts such as pins or keys. The torque load is spread symmetrically without peaks and irrespective of direction, with the polygon shape self-centering for accurate tip-seat center height
- High clamping force: The segment clamping generates high clamping forces, ensuring a press fit and a two face contact and resisting the bending moment generated during cutting
Read more about torque transmission and bending stiffness
Clamping unit range
C3 through C10 are all used for quick change on CNC lathes. The size is dependent upon the machine size and cutting parameters.
Vertical lathe RAM interfaces vary and the manual clamping unit block with Coromant Capto® clamping units is either supplied directly with the machine by the machine tool builder or is ordered separately as a special block.
CBI (Bolt on)
Dovetail VDI-DIN 69881
Coromant Capto® clamping units for bolt-on interfaces (CBI)
Machine-adapted clamping units (MACUs) are available as standard products for many machine tool builders' own turret interface designs.
Coromant Capto® disc interface (CDI)
CDI was developed as a turret interface that can be standardized regardless of the machine type, as a replacement for VDI. The CDI turret option is available for many machine tool builders.
Non-standard clamping units – Clamping unit sets
Clamping unit sets are used to make clamping units according to specific requirements. These are commonly used for tool blocks for vertical lathes, double units or for retrofitting quick change onto existing turrets.
The clamping set sleeves are available in different forms depending on the application.
Square – double units
Offset – boring bar applications
Styles for machining specific clamping units
External – OD turning
Double for sub-spindle
Parting blade adapter
Internal – ID turning/drilling
Double for sub-spindle