OK-VISE® Fixturing Concept

Hydraulic pressure (p) is first converted to the downwards force and by the use of the clamping force of the wedge clamp (F) is applied in two directions. Just like in manual clamping, a stopper is needed on both sides of the clamp.

The simplest way of creating a hydraulic fixture is to use a a single acting hydraulic actuator. Please note that in the double acting hydraulic actuator, pushing force is stronger than the pulling force.

 

hydraulic actings

Applications

Multi-Rail RM Units + Hydraulics

Continuous hydraulic connection with horizontal machining center.

mrh

Grid System + Hydraulics

Continuous hydraulic connection with vertical machining center.

gsh

Blank System + Hydraulics

The hydraulic connection is disconnected after loading. Used in the FMS systems.

bsh

There are copule of ways for easy access to automated clamping

  • Using hydraulic cylinders
  • Powerplate concept

Retro-fit option

retro fit option

OK-VISE hydraulic modules can also be used with manually operated fixtures. This is the easiest way to enter the world of an automated clamping!

Benefits of hydraulic clamping

Compared to manual clamping, using hydraulic clamping in the system ensures a consistent clamping force on the workpiece, makes clamping process faster and enables automated or robotic loading of workpieces.

Compared to the other hydraulic systems on the market, the OK-VISE hydraulic clamping module:

  • is based on the world-renowned wedge clamp  
  • has a wedge design that hinders compression of hydraulic oil  and prevents vibration
  • creates clamping force with a pull stroke
  • has a return stroke performed by a spring or hydraulics
  • uses a HA-Series actuator designed for 350 bar pressure, hence a compact size

HA-2S1 HA-1S1

 

Some basic components

hydraulic comp

Installation

installation


Fixturing assembly can be supplied together with the hydraulic actuators. OK-VISE partners from the global distribution network offer assistance with the hydraulic installations. Sample connection diagrams are available from support@ok-vise.com.

OK-VISE CLAMPS

OK-VISE low-profile clamps are worldwide known for their quality and accuracy. D-series and B-series clamps are particularly recommended for use with the OK-VISE hydraulic actuators.

The Powerplate concept gives users the most straightforward access to automation.

Hydraulic actuators (from 1 to 7 pcs) are built-in under a base plate, and the cylinder package can also be moved to various additional positions under the plate for optimal clamping. So,either a single workpiece can be clamped alone or up to 14 pcs simultaneously.

The Hydraulic actuator normally uses HA-VD1, creating a 29 kN clamping force with 350 bar maximum hydraulic pressure.

Fixtures can also be built on sub plates, which can be rapidly changed using a built-in Ball-Lock quick-change system.

Generic-purpose OK-VISE Fixturing Concept components like Multi-Rail RM units can be installed directly on the plate.

There are two sizes as standard: 240x400 mm and 400x700 mm.

In addition to hydraulic actuators (= cylinders) these sets include all the adapter bolts and fittings required to automatize B- or D-series clamps.

Depending on the clamp size, a 8 mm or 12 mm bolt goes through the clamp and fixture plate to the cylinder ‘s piston. The base cylinder is bolted on to a fixture plate.

The cylinders in the sets are single-acting, enabling the simplest possible actuation of OK-VISE clamps

ha 300X200

PP2VD5 2440A 400x300PP2VD5-2440A with RM option

Plate size 240 x 400 mm.
Hydraulic cylinder package ( 2 actuators ) can be installed in the middle or at the end of the plate.

Positioning holes for RM-400 Multi-Rail units are included.

Applications

 10001282100081100088POWERPLATE WITH SUB-PLATE

 Code Dimensions  STEP
 HA-VB1 icon pdf
  • Single acting cylinder with spring return
  • Cylinder stroke 4,5  mm creates 2 x 2,0 mm clamp jaw movement
  • M8 thread
  • Height 51 mm
  • JIC 1/4 connection
  • Recommendation max 350 bar

 

HA VB1 300X200

Piston area/ pull (cm2)   3.8
Piston force (kN)    
  at 250 bar / pull   9.5
  at 350 bar / pull    13.1
Clamp force (kN) using BK2-VT clamp in standard conditions
   at 250 bar / pull  7.0
   at 350 bar / pull 

9.7

 Code Dimensions  STEP
 HA-VD1 icon pdf
  • Single acting cylinder with spring return
  • Cylinder stroke 8  mm creates 2 x 3,3 mm clamp jaw movement
  • Height 67 mm
  • JIC 1/4 connection
  • Recommendation 350 bar max


HA VD1 300X200

Piston area/ pull (cm2)   11.6
Piston force (kN)    
  at 250 bar / pull   29.0
  at 350 bar / pull    40.0
Clamp force (kN) using DK2-VT clamp in standard conditions
   at 250 bar / pull  20
   at 350 bar / pull 

31

Installation principle

HA VD1 ap2

 Code Dimensions  STEP
 HA-JB1 icon pdf
  • Hollow-rod cylinder
  • M8 thread
  • Height 48 mm
  • Cylinder stroke 6,1 mm creates 2 x 2,6 mm clamp jaw movement
  • JIC 1/4 connection
  • Recommendation max 250 bar

HA JB1 400x300

Piston area/ pull (cm2)   6.2
Piston force (kN)    
  at 250 bar / pull  14.9
  at 350 bar / pull    20.9
Clamp force (kN) using BK2-VT clamp in standard conditions
   at 250 bar / pull   11
   at 350 bar / pull 

 15

 Code Dimensions  STEP
 HA-JD1 icon pdf
  • Hollow-rod cylinder
  • M12 thread
  • Cylinder stroke 7,8  mm creates 2 x 3,3 mm clamp jaw movement
  • Height 58 mm
  • JIC 1/4 connection
  • Recommendation max 250 bar

 

HA JD1 400x300

Piston area/ pull (cm2)   12.3
Piston force (kN)    
  at 250 bar / pull   29.6
  at 350 bar / pull   41.4
Clamp force (kN) using BK2-VT clamp in standard conditions
   at 250 bar / pull  22
   at 350 bar / pull 

31

Installation

HA JD ap1