2. OKK Exhibits VM43R VC–X500 VM53R HM5000 VM76R MCH10000 MCH10000 HM50002

3. Vertical Machining Center VM-R Series

4. VM Series, the Top-selling Machine
Track record reaching as many as 8,000 units.
Developed VM4 in 1994  VM4II in 1998  VM4III in 2003
The VM4 Series reached a supply track record of nearly 2,600 units.
Developed VM5 in 1997  VM5II in 1998  VM5III in 2003
The VM5 Series reached a supply track record of nearly 3,800 units.
Developed VM7 in 2001  Developed VM7III in 2003
The VM7 Series reached a supply track record of nearly 1,600 units.

5. Precise Cutting Performance.
　Maximizing the features of the box ways,
OKK developed a new series with
Precise Cutting Performance.
For real machining professionals
The VM/R Series are Now Available!
　　Ｒ stands for 　
REAL
　　Rigidity　
　　Ecology
Application variety 　
Long Machine Life 　

6. Vertical Machining Center
　　　　　　　　　VM76R

7. Features of VM76R 1. Increased rigidity of the main body
2. Increased rigidity and torque of the spindle
3. Increased workability
4. Increased maximum loadable weight on table
5. Eco-friendliness
6. Increased operability
7. Built to new design

8. Y-axis slideway pitch+80 mm
1. Increased rigidity of the main body
•Increased rigidity of the table, saddle, column, and bed
Re-optimizing rib shape, size and location　
Y-axis pitch extended 80mm
Improved internal structure of saddle
Achieving a 30% reduction in deflection caused by overhanging.
Y-axis slideway pitch+80 mm

9. 2. Increased rigidity and torque of the spindle
 Large-diameter bearing used for the gear spindle (#50)
85 mm (VM7III)  100 mm
 Torque increased by use of larger-capacity motor
　 • Spindle motor
Standard: 11/7.5kW (VM7III)  15/11kW
Option: 15/11kW (VM7III)  18.5/15kW
　 • Maximum spindle torque
281.71N • m  461N･m: Standard for 15-/11-kW motor
347.44N • m  568N･m: Option for 18.5-/15-kW motor

10. 3. Increased work area Larger working area 1530 mm740 mm (VM7III)
1540 mm760 mm (X axis: +10 mm / Y axis: +20 mm)
Larger table dimensions
1550 mm740 mm (VM7III)
1550 mm760 mm (Depth: +20 mm)
Y Axis: 760 mm
Z Axis: 660 mm
X Axis: 1540 mm
Z axis: 660 mm Table height: 1000 mm

11. • Wider folding internal step 600 mm(VM7III)1000 mm (Width: +400 mm)
 Operator Friendly
• Wider folding internal step
　　 600 mm(VM7III)1000 mm (Width: +400 mm)　　
• Built-in external step as standard
Built-in retractable step
(Retracting in the skirt)
Foldable step
(Retracting under the door)
External step retracted

12.  No interference of the head with workpiece on the table
Changed shape of the bottom surface of main body of the head.
VM7III
VM76R

13. Hollow Cooling (Option)
4. Increased maximum loadable weight
2000-kg maximum loadable weight available (Option)
(Standard maximum loadable weight: 1500 kg)
Options incorporated to support excess loadable weight:
 Larger diameter and smaller lead for the Y-axis ball screw
　　4012 → 4510 (Dedicated saddle)
 Cooling of hollow
double-wall anchors
adopted for all axes
Hollow Cooling (Option)
Nut
Nut
Coolant Oil
Ball Screw
Servomotor
Circulating temperature-controlled coolant oil reduced thermal displacement.
Ｘ-axis ball screw

14. Surface Squeeze Air Layer
 Hybrid box way adopted for Y axis
Static air-bearing pad combined with the box way
reduces load weight.
Air Supply
Air Supply Slot
Surface Squeeze Air Layer
Resin Slide Way
Grinding Slide Way

15. Enhanced machine rigidity and power
Increased X- and Y-axis motor capacities as standard
Increased X- and Y-axis traverse thrust force as standard
FANUC: 10362N  14137N (16964N)  UP 36%
Mitsubishi: 10603N  17530N (21036N)  UP 65%
The 2000-kg specification allows further increase in the thrust force only of the Y-axis by 20%.
FANUC: 16964N Mitsubishi: 21036N

16. 5. Eco-friendliness  Energy saving by gear drive
Power supply capacity reduced
by as much as 25% compared
with MS series spindles
 Energy saving by using LED lights as standard
 Energy saving by eco sleep function
Switches to sleep mode when the machine remains on standby for over a given period of time, turning OFF the servomotor, chip conveyor, etc.

17. 6. High operability Operator friendly panel
Operator friendly panel adopted to provide operators with ease of monitoring and use
　• Large 15-inch
　 display
　 • QWERTY keyboard
　　layout
10.4 inch
15 inch

18. 7. Built to new design
VM7III
VM76R

19. Floor Space Width: 39803980 Depth: 80 mm deeper 38603940 Height:
Maintenance Area
Width:
39803980
Depth: 80 mm deeper
38603940
Height:
33003300

20. Vertical Machining Center
VM43R

21. Features of VM43R １. High workability
(2. Eco-friendliness　Common with the VM-R Series)　
(3. High operability　 Common with the VM-R Series)
4. Built to new design
5. APC (Option)

22. １. Increased workability
 Larger working area
630 mm410 mm (VM4III)
630 mm430 mm　(Y axis: +20 mm)
 Larger table dimensions
800 mm410 mm (VM4III)
800 mm420 mm　(Depth: +10 mm)
Y Axis: 430 mm
Z Axis: 460 mm
X Axis: 630 mm
Z axis: 460 mm Table height: 900 mm
Loadable weight on table: 500 kg

23. 4. Built to new deisgn
VM4III
VM43R

24. Floor Space Same as VM4III Width: 19801980 Depth: 26552655 Height:
Maintenance Area
Same as VM4III
Width:
19801980
Depth:
26552655
Height:
26262626

25. 5. APC (Option) Specification Name of APC DT-APC Pallet change method
Direct return
Pallet size
400320
Top surface finish of pallet
M10 screws in 24 places
Allowed loadable weight on pallet
150 kg (Even weight distribution) (Weight of pallet alone: 65 kg)
Pallet clamp unit
Mounted on the table of the main body (Air pressure: 0.9MPa)
Pallet clamp force
7360N
Pallet clamp check/detection method
By pressure switch
Pallet positioning method
By taper cone
Same pallet change repeat accuracy
X, Y, Z: 0.01 mm
Mutual error in pallet change
X and Y: 0.25 mm, Z: 0.02 mm
Pallet change time
8 seconds
Column UP
200 mm
APC mounting position
Mount on the front of the machine
Operating air pressure
0.9MPa (intensify 0.5-Mpa main pressure)
Operating air volume
100 liters (per single operation of APC)

26. Floor Space (DT-2APC)
Maintenance Area

27. 3. Vertical Machining Center
　　　　　　　　　VM53R

28. Features of VM53R 1. Increased rigidity of the main body
2. Increased rigidity and torque of the spindle
3. Increased accessibility
4. Increased workability
5. Increased overall accuracy
(6. Eco-friendliness　Common with the VM-R Series)　
(7. High operability　 Common with the VM-R Series)
8. Built to new design

29. Providing vertical ribs achieved increase in the rigidity of the bed.
1. Increased rigidity of the main body
• Increased rigidity of the table, saddle, column, and bed
Increased wall thickness by 20% to 30% compared with the conventional series
　　Improved structure of bed ribs
VM5III Bed
VM53R Bed
Providing vertical ribs achieved increase in the rigidity of the bed.

30. VM5III Saddle • B type applied to the basic design
Extended slide way of the saddle　
Increased wall thickness of casting of the slide portion
VM5III Saddle

31. 2. Increased rigidity and torque of the spindle
 Large-diameter bearing used for the gear spindle (#50)
85 mm (VM5III)100 mm
 Torque increased by the use of larger-capacity motor
• Spindle motor
Standard: 11/7.5kW (VM5III) 15/11kW
Option: 15/11kW (VM5III) 18.5/15kW
• Maximum spindle torque
281.71N･m 461N･m: Standard for 15-/11-kW motor
347.44N･m 568N･m: Option for 18.5-/15-kW motor

32. 3. Increased accessibility
• Distance from the front surface of guard to the spindle
850 mm (VM5III)780 mm　(Shorter by 70 mm)
• Height from the floor to the table
950 mm (VM5III)  920 mm (Lower by 30 mm)
780 mm
920 mm

33. 4. Increased workability
 Larger working area (Type B, Type C)
1020 mm510 mm (VM5III)
1050 mm530 mm　（X axis: +30 mm / Y axis: +20 mm)　　　　　　　　　　　　　　　　　　　
 Larger table dimensions (Type C)
1250 mm560 mm (VM5III)
1260 mm560 mm　(Longitudinal travel: +10 mm)
1050 mm 560 mm for Type B
Y Axis: 530 mm
Z Axis: 510 mm
Type A was abolished.
Z axis: 510 mm
X Axis: 1050 mm

34.  No interference of the head with workpiece on the table
Changed shape of the bottom surface of main body of the head.

35. 5. Increased overall accuracy
• Reduced lead of ball screw
X axis: 4012   4010 (Maintaining the rapid traverse rate of 30 m/min.)
Y axis:  4012   4010 (Maintaining the rapid traverse rate of 30 m/min.)
Z axis:  4010   4010 (Maintaining the rapid traverse rate of 20 m/min.)
Making the pitch of the ball screw narrower by 20% increased the dynamic accuracy by 20%.
Using scale software increased positioning accuracy.
Making the pitch of the ball screw
Narrower by 20% increased the
traverse thrust force of the
X and Y axes by 20%.
FANUC: 5655N　  　6786N
Mitsubishi: 6456N　  　7747N

36. 8. Built to new design
VM5III
VM53R

37. Floor Space Width: Narrower by 40 mm 28202780 Depth: Deeper by 10 mm
Maintenance Area
Width: Narrower by 40 mm
28202780
Depth: Deeper by 10 mm
29702980
Height: Lower by 31 mm
28462815

38. 5-Axis Controlled Vertical Machining Center
　　　　　　　　　　　 VC-X500

39. Enhanced Specifications
50 min-1
16.7 min-1
C axis rapid traverse rate
20 min-1
11 min-1
A axis rapid traverse rate
500 kg
400 kg
Max. loadable weight
500 mm
380 mm
Max. workpiece height
700 mm
630 mm
Max. workpiece dia.
-120 to +30
-105 to +30
A axis travel
610 mm
460 mm
Z axis travel
850 mm
Y axis travel
700 mm
1120 mm
X axis travel
VC-X500
VP600-5AX
Item

40. Items previously optional on VP600 now incorporated as standard
 Spindle taper (12R, Increased power, Big-plus)
 C axis scale
 Magazine with a capacity for 40 tools
 ATC shutter
 Coil conveyor

41. Features of VC-X500 1. Increased accessibility
2. Large workpiece capacity
3. High feed rigidity
4. Magazines can be easily extended
5. Eco-friendliness
6. Rotation axis measurement function
7. Geometric error compensation function

42. 1. Increased accessibility
Installing the X axis (table travel axis) at right angles to the column achieved a significant increase in accessibility to the spindle and workpiece.

43. • Distance from the front door to the center of table: 620 mm　　　　　　　　　　　　　　　　　　
• Distance from the front door to the center of spindle: 120 mm
• Distance from floor to the top surface of table: 1080 mm

44. Stroke diagram for VC-X500

45. 2. Large workpiece capacity
700 by H500 mm
Max. loadable weight: 500 kg (which is the highest level in the class)
Suppressing the floor space to 3300 mm by 2450 mm.
2450 mm
3300 mm

46. 3. High feed ridigity • Roller guide: UP by nearly 20%
Upgraded feed system
• Roller guide: UP by nearly 20%　　　　　　　　　　　　
• Ball screw diameter: UP by nearly 36%
(Compared with VP600-5AX) Ｘ軸
Y,Z Axes
Ｙ，Ｚ軸
X Axis

47. 4. Easily extended magazines
Chain-operated, self-standing magazine
40 tool capacity provided as standard
The same floor space allows installing 2 magazines with a capacity for 60 tools
Floor space for the second stand magazine
Standard magazine with a capacity for 40 tools

48. 5. Eco-friendliness
 Energy saving through use of LED lights as standard
Energy saving by eco sleep function
Switches to sleep mode when the machine remains on standby for a given period of time, turning OFF the servomotor, chip conveyor, etc.
This reduces standby power consumption by nearly 54%.

49. 6. Rotation axis measurement function
Use of a touch sensor makes it possible to make measurement of the axis of rotation of the table of 5-axis machine in an easy way and a short period of time.
Just need to install a reference sphere as shown in the guide diagram and then press the Cycle Start button.
Setting the measurement results to NC parameters
Effect: Providing higher accuracy for 5-axis indexing and higher grade for 5-axis simultaneous machining

50. 7. Geometry error compensation function
For machining with 5-axis machine,
geometry errors (such as the tilt and displacement of the axis
of rotation) significantly affect machining accuracy.
Exhibit for reference X Y Z A C
Direction of the center of axis of actual machine
Correct direction of the center of axis
Error in the direction of the center of C axis
Error in the direction of the center of A axis

51. [1] Geometry error compensation function
　This function makes automatic measurement and compensation of geometry errors using a touch sensor.
Rotate the A and C axes to make measurement at several measure points. X Y Z A C X Y Z A C
Calculate compensation
parameters on the software side, and then set the results on the NC.
Just installing a reference sphere in accordance with the
guide diagram shown on the display, and then pressing the
Cycle Start button can facilitate making measurement and
setting it to the NC.
Effect: Providing higher accuracy for 5-axis indexing and 　　　
higher grade for 5-axis simultaneous machining

52. Thank You