Reference measuring adapter
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Before

Reference measurement is an essential process in industrial screwdriving technology, which is used in both electrically controlled EC-spindles as well as nutrunners. It serves for calibration and ensuring the accuracy and precision of the screwing processes. Regular reference measurements ensure that each screw connection exactly meets the specified specifications, which is of great importance, especially in safety-critical industries such as the automotive industry.

Structure

1. Quick clamping system

2. Mounting option for angle of rotation and torque sensors

3. Tightening case adapter with disc spring package

4. Tightening case adapter axially infinitely adjustable

Mounting quick-release system

1. Slide the reference measuring adapter over the pre-assembled washers

2. Tighten the two hexagon socket screws to fasten the reference measuring adapter

i. “Washers” permanently attached to e.g. the spindle plate

Tightening case adapter

1. Housing removable, to be able to realize a different layering of the disc springs

2. Disc spring package for simulating different tightening case characteristics

3. Drive shaft with internal square, no axial movement during screwing

4. Easy regreasing via flat grease nipple using a one-hand impact grease gun

Disc spring layering

All disc springs are layered in the same direction as standard.

1. To simulate a harder tightening case, the disc springs can be replaced by tempered washers.

2. To simulate a softer tightening case, the disc springs can be layered in alternating directions.

Counter-measurement with nutrunners

1. Bosch Rexroth

2. Atlas Copco

3. AMT

4. Cleco

Counter-measurement on the straight drive

1. Quick clamping system

2. Angle of rotation and torque sensor

3. Tightening case adapter

Multi-spindle adaptation

1. Removal of the EC-spindles is not required to perform the reference measurement

2. Very compact design for minimum space requirements

i: Minimum spindle distance for multi-spindle adaptation:
RA50 = 30mm, RA150 = 45mm, RA400 = 62mm

Counter measurement on the angle head

WT Reference measurement

1. EC-spindles from different directions

2. Tightening case adapter

3. Various adjustment options

4. Quick-change chuck for attaching the tightening case adapters

5. Conveyor belt

Reference measuring adapter stationary

1. Drive shaft with internal square, no axial movement during screwing

2. Easy regreasing via flat grease nipple using a one-hand impact grease gun

3. Disc spring package for simulating different tightening case characteristics

4. Plate for mounting the reference measuring adapter on a table

5. Housing removable, to be able to realize a different layering of the disc springs

Countermeasurement stationary

1. Reference measuring adapter

2. Angle of rotation and torque sensor

What is a reference measurement and why is it important?

Precision | Repeatability

In order to ensure consistent quality in production, EC-spindles and nutrunners work precisely and reproducibly. Reference measurements help to determine the position and the torque can be precisely controlled.

Quality assurance

Faulty tightening connections can lead to serious problems. Through the calibration of the tools, it is ensured that all screws are tightened correctly, which increases the quality and safety of the end products.

Error detection | -prevention

Regular reference measurements enable the early detection of deviations and errors. This helps to avoid expensive reworking and production downtime.

Compliance with industry standards

Compliance with quality standards and norms, such as ISO/TS 16949 in the automotive industry, requires precise and documented calibration processes.

Product advantages

System design & flexibility

Very compact design, therefore also suitable for multi-spindle applications

Tightening case adapter output lengths infinitely adjustable to different

Performance & ergonomics

Reference measurement IN LINE, without removing the EC-spindle

Approximate simulation of hard or soft screw cases through shifting of the disk spring assembly possible

Suitable for angle of rotation and torque measurement

Suitable for EC-spindles and nutrunners

Process integration & operational safety

Quick clamping system for spindle adaptation

Difference to the machine capability study (MFU)

Reference measurement

Purpose

Used for calibration and ensuring the accuracy of spindle movements.

Frequency

Performed regularly to ensure the precise positioning and force application of the spindle.

Focus

Focuses on precise positioning and adherence to the specified tolerances for every screwdriving operation. screwing process.

MFU

Purpose

Evaluates the ability of a machine to consistently deliver high-quality results under real production conditions. deliver.

Frequency

Typically carried out at the start of a production run or after significant changes to the machine. carried out.

Focus

Analyzes the overall performance of the machine, including precision, repeatability, and stability over a longer period of time.

Summary

Reference measurement

Focuses on the short-term accuracy and calibration of an EC-spindle or a nutrunner.

Machine capability test

Evaluates the long-term performance and reliability of a machine under production conditions. production conditions.

Variant overview

Reference measuring adapter nutrunner mounting

Description
Drive max. drive torque
Drive internal square
Compatible with angle of rotation and torque sensor

Manufacturer

Reference measuring adapter 3/8"
50 Nm
4kt-3/8"
Schatz
Burster
Checkstar Crane
Atlas Copco
Reference measuring adapter 1/2"
150 Nm
4kt-1/2"
Burster
Schatz
Reference measuring adapter 3/4"
400 Nm
4kt-3/4"
Burster
Schatz

Reference measuring adapter stationary

jh-ANr.
Description
Drive

max. drive torque

Drive internal square
131544
Tightening case adapter 3/8"
50 Nm
4kt-3/8"
131545
Tightening case adapter 1/2"
150 Nm
4kt-1/2"
136876
Tightening case adapter 3/4"
400 Nm
4kt-3/4"

Equipment options
Item added to quote! ✖