Сoordinate boring machine СКР 400

CNC-operated extra accurate single-column vertical coordinate boring machine
Model SKR 400

It provides productive, high-precision machining of medium-sized parts and makes it possible to effectively solve the problems of accuracy in piece- and serial production, as well as in the manufacture of control measuring tools and standard samples, as well as accurate measurements.

ТTECHNICAL SPECIFICATIONS

Sizes of a working surface of the table, mm
width	400
length	800
Number of T-cuts of a table	5
The distance between the cuts, mm	80
Width of the cut, mm	14
Maximum table run, mm
transverse	400
lengthwise	630
Maximum run of the spindle head, mm	500
The distance from the end of the vertical spindle to the working surface of the table, mm:
min	100
max	600
Spindle overhang (distance from stand to spindle axis), mm	450
Internal spindle cone	40 (7:24)
Maximum cone size of the tool to be fixed	Morze 4
Spindle rotational speed (stepless regulation), r/min	6,3…6000
Table cutting feed, spindle head, mm / min	1…6000
The speed of fast movements of the table, spindle head, mm/min	12000
The largest diameter of machining, mm:
drilling on steel	30
bore machining	250
bore machining (for machine with automatic tool change)	130
Maximum mass of the machined part, kg	400
Maximum spindle thrust, N	4000
Maximum spindle torque, Nm	70
Main motion drive power, not less, kW	7,5
Machine weight without attachable equipment, kg	4300
Machine weight with automatic tool change, kg	4700

COMPLEMENT

To expand the technological capabilities of the machine, the basic model of the SKR 400 with three coordinates CNC-operated is additionally completed with:

- storage magazine with an automatic tool changing apparatus (SKR 400M);;

- CNC-operated turned around rotary table attachment;

- CNC-operated cross functional turned around rotary table attachment;

- station for cleaning and supplying cooling mixture to the cutting zone;

- 3D measuring probe head with signal transmission via IR port;

- tool cabinet with a set of accessory tools..

Highly accurate linear variable displacement transducers in combination with a rigid carrying system of the machine and slideway bearings provide the ability to automatically work out small displacements equal to the discreteness of the measuring system of the machine (0.001 μm), which is a determinal factor for obtaining high precision of the camming contours of surfaces being machined by using several methods simultaneously CNC-operated coordinates of the machine (linear and circular interpolation).

For example, the use of the turned around rotary table attachment CNC-operated in combination with simultaneously controlled linear coordinates simplifies programming and contour processing such as an Archimedean spiral on radial cams, makes forming of face cams easy and productive, machining helical splines on cylinders and much more.

Consistently high accuracy over a long operational period is ensured by::

- rigid construction of cast-iron basic parts;

- installation of the machine on three points of support;

- system of direct measurements by photopulse converters;

- hand-scraped guides of working moving sleeve;

- spindle head without movable quill;

- rigid restraint of the short spindle on duplex angular-contract thrust bearings;

- feeding units and main movement from servomotors directly connected to the actuating mechanisms;

- automatic central lubrication.

Сoordinate boring machine СКР 400

CNC-operated extra accurate single-column vertical coordinate boring machine Model SKR 400

CNC-operated extra accurate single-column vertical coordinate boring machine
Model SKR 400