Information - Email us at sales@taylor-winfield.com
 

WELD FORCE PANCAKE LOAD CELL
Model WPK

MEASURE WELDLING FORCE

FATIGUE RATED, VIBRATION PROOF

INTEGRATES WITH PRESS WELDERS

NIST TRACEABLE ACCURACY OF 0.25%

The weld quality of resistance spot welding depends largely on controlling your weld force. To reduce flash and ensure the proper rugged formation, it is critical that a minimum force (or pressure) is reached before current if fired and a maximum force is not exceeded during the weld. To minimize weld cycle time, weld as soon as the current force is reached and eliminate wasted squeeze cycles.

Retrofit your existing press welders or custom weld machines with a system that allows you to calibrate an accurate initial force level and monitor weld-tip force during every weld. Or design  it into your new machines. The Model WPK Pancake Load Cell is easily mounted between the air cylinder and the mounting block and interfaced with a WM9000 WeldMeter.

 Use the system to set the pressure regulator to provide an acceptable weld force. Then, preset a force limit to a value approximately 5% lower than this force and connect the relay output of the WeldMeter to your PLC or weld controller. The system will now monitor every weld and fire current precisely when the current force is reached.

During the weld, it is important that the pressure does not continue to increase resulting in a cold weld or small nugget. Use the second programmable limit to detect high forces and signal the operator when the tip force exceeds your acceptable limit.

SPECIFICATIONS

Capacity

0-2000, 2500, 5000, 10,000 Lbs.

Nominal Output Sensitivity

2 mV/V

Excitation Voltage

10 VDC

Electrical Connection

Bendix PTIH-106P or equivalent

Overall Accuracy

0.25% of full scale

Overload Limit

200% of full scale

Mechanical

Fatigue rated, shock and vibration resistant

Operating Temperature Range

-65 to 250o F.

Compensated Temperature Range

60 to 16o F.

Load Connection

See below, optional pull plate available

Housing

Stainless steel, all welded construction, hermatically sealed

HOW TO ORDER

Model WOK

 

Order Code

AW711

Capacity:

 

     2000 Lbs.

DL

     2500 Lbs.

DM

     5000 Lbs.

DR

   10,000 Lbs.

DV

DIMENSIONS

Optinal Pull Plate (with bolts)

 

2000 Lbs. (1/2 - 20 UNF)

AW151

2500 Lbs. (1/2 - 20 UNF)

AW151

5000 Lbs. (1 - 14 UNF)

AW152

10,000 Lbs. (1 1/2 - 12 UNF)

AW153

Cap.

D

H

F

G

K

T

A

B

C

2000

3.50

1.00

6

2.625

0.34

1/2-20

0.82

0.75

1.25

2500

3.50

1.00

6

2.625

0.34

1/2-20

0.82

0.75

1.25

5000

5.50

1.80

8

4.50

0.40

1 - 14

1.25

1.50

2.00

10,000

6.00

1.80

8

4.875

0.53

1 1/2-12

1.25

1.50

2.00

INSTRUMENTATION

Pull Plate

 

 

 

 

 

 

Order Code

T-thrd

D-dia

H

# Bolts

Size

Depth

AW151

1/2-20

3.50

1.00

6

5/16-24

0.50

AW152

1 - 14

5.50

1.50

8

3/8-24

0.75

AW153

1 1/2-12

6.00

1.80

8

1/2-13

1.00

The WDP Differential Pressure Transducer is interfaced with a variety of instruments to help monitor and control weld force. The family of WeldMeters range from a simple, single channel instrument with dual limits, relay contacts and analog outputs to single and multi channel microprocessor meters with digital inputs and outputs for multiple head applications.

The WeldMeter is easily programmed to set one or more force limits. One limit is used to trigger current firing after the preset achieved contact force is reached for every weld.  This assures the minimum force is reached and minimizes the traditional squeeze time creating shorter weld cycles. Another limit is used to detect if a maximum preset force is exceeded during the weld which may lead to cold welds or incomplete nugget formation.

Finally, RS232 or 486 serial outputs can provide data logging of peak forces achieved during every weld. This data can provide traceability for quality records or detect trends in force changes.

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