D Type Knuckle Joint Press

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Type D Knuckle Joint Press

In operations where the displacement-tonnage performance of eccentric presses and link drive presses is not sufficient, it is suitable for slow but high force operations in the lower stroke area.
We produce link drive presses in two connecting rods and four connecting rod configurations.
In industrial standards, PLC, operator panel, cam case, clutch brake valve, clutch brake, encoder and light barriers are selected from globally accepted brands.
Our presses are PLC controlled. We use safety PLC or safety modules in accordance with 2006/42/EC regulation. Depending on the size of the press, we use 9” or 12” rotary console operator panels.
Prescription-based press speed adjustment and regulation adjustment can be made with the encoder from the operator panel.
We manufacture our presses with fixed or mobile plate and cushioning according to your request.
Our gears are zero-gap herringbone gears.

Body Structure

Mono-block body is preferred in D-type presses.
We make our designs by considering the maximum deflection 0.12 mm/m.
The side clearance is determined by the width of the roll to be fed.
No press pit is required.
Knuckle joinr presses are designed for slow but high force operations in the lower stroke zone, so they can be used for printing, extrusion, sizing, embossing. This type of press is ideal for shaping operations that require precise tolerance.
As you get closer to BDC, the ram speed is very low. This low staple input rate provides sufficient time for the plastic flow of the material during the critical cold forming zone.

Body design and Manufacturing

Body design is analyzed with Ansys finite element software. In the analysis, we maintain design improvements until we achieve an infinite fatigue life.
We report the results obtained and maintain them by documenting them.
The body is obtained by welding St52-3 quality plates. Welding is performed by certified welders using SG3 welding wire.
After welding, the body is placed in the furnace and subjected to stress relieving process.


During the process, the parameters of velocity, position, and acceleration are optimized within the limits allowed by the mechanism to properly direct the flow occurring in the material.
While aiming the most appropriate movement curve for the process, it is ensured that the forces to be applied to the press limbs and bearings are kept to a minimum.

Mechanism design

Knuckle-joint mechanism is used in our D-type presses.
The articulated press is ideal for the production of high-precision parts. Suitable for cutting, tearing, forging operations as it quickly discharges energy to the workpiece at the end point. Due to its high surface quality and accuracy. These cold-formed parts are in increasing demand.

Power Train Design

In our designs, we use the finite element method to estimate how the powertrain behaves. We use ANSYS software for these analyzes we perform in the computer environment.
ANSYS, one of the modern simulation software, contains the finite element method on its basis. It helps us find the weakest point in our designs and make parameter optimization.

Slide Guiding

The ram is guided on the columns from 8 surfaces.
Each plate is precisely adjusted and secured by means of bolts in the x and y directions.
Optimized lubrication channel and precision machined bronze bearings work on steel plates.

Clutch & Brake

Pneumatic or hydraulic clutch type is used.
Depending on the press speed, mechanism and operating conditions, the clutch type is selected.
The required clutch and brake size are calculated according to the transmitted power, torque, tonnage and speed information.
Clutch- The brake is controlled by a double valve control system with monitoring, three-way safety. It is vitally important for occupational safety.

Shut Height Adjustment and Overload Protection

The shut height adjustment is achieved by the movement of the nuts working on the thrust bolts.
In our presses, the shut height adjustment and overload protection systems are combined in a single body.
In case of a situation exceeding the press limits during any possible mould failure and mass production, the hydraulic overload valve is activated and possible damage is prevented.

Precise Shut Height Adjustment with Servo Motor

Possibility of 0.1 mm precision with direct servo motor control

D Type Knuckle Joint Press Features

Tonaj120 ton250 ton400 ton630 ton800 ton1000 ton1250 ton1500 ton
Anma tonaj yüksekliği4 mm4 mm6 mm8 mm8 mm8 mm8 mm8 mm
Tabla ölçüleri500 x 600 mm500 x 600 mm550 x 660 mm600 x 700 mm600 x 700 mm700 x 800 mm800 x 1000 mm1000 x 800 mm
Kurs150 mm150/200 mm150/200 mm150/200 mm200 mm200 mm250 mm250 mm
Pres hızı20-100 spm20-100 spm20-80 spm20-80 spm15-60 spm15-40 spm15-40 spm15-40 spm
Maks. kalıp bağlama yüksekliği (SDAU)400 mm400 mm400 mm400 mm400 mm500 mm500 mm600 mm
Reglaj 50 mm50 mm50 mm50 mm50 mm50 mm50 mm50 mm
Tonaj anma ölçüsü4 mm4 mm6 mm6 mm8 mm8 mm8 mm8 mm
Alt plaka kalınlığı100 mm100 mm120 mm150 mm180 mm180 mm200 mm250 mm
Hidrolik sigorta (HOLP)varvarvarvarvarvarvarvar
Mobil tablayokyokyokyokyokyokyokyok
Kavrama frenDesch / OmpiDesch / OmpiDesch / OmpiDesch / OmpiDesch / OmpiDesch / OmpiDesch / OmpiDesch / Ompi

D Type Knuckle Joint Press Dimensions

Presler PDK120.0506.150PDK250.0506.200PDK400.0607.200PDK630.0607.200PDK800.0607.200PDK1000.0708.200PDK1250.0810.250PDK1500.1008.250
H3600 mm3650 mm4150 mm4650 mm4850 mm5650 mm6600 mm7100 mm
H1700 mm700 mm820 mm1000 mm1050 mm1300 mm1470 mm2030 mm
W11050 mm1150 mm1400 mm1750 mm1750 mm1970 mm2300 mm3200 mm
W21400 mm1500 mm1780 mm2050 mm2080 mm2350 mm2680 mm3580 mm
D1700 mm800 mm850 mm850 mm950 mm950 mm1050 mm1150 mm
D22500 mm2500 mm2650 mm3200 mm3350 mm3700 mm4400 mm4900 mm