AMH-B240 Bolt Straightener
AMH-B240 Bolt Straightening Machine
- Suitable bolt diameter: 4mm-30mm
- Suitable bolt length: 60-600mm
Note:we can design the auto loading unit, auto unloading unit and also the straightness checking unit according to your requirements
Also we can design the machine with the CE standard and higher Automation level (Remote Diagnosis/ Workshop Automation).
Project Reference of AMH-B240 Bolt Straightening Machine
Project Reference 1
This AMH-B240 straightening machine consists of the screw blots loader, manipulator, straightener, straightness checking device and screw bolts unloader.
Workpiece: M24 Screws with bolt length 200mm and M16 Screws with bolt length 160mm and M8 Screws with bolt length 100mm (Bolts are with Screw)
About the AMH-B240 Bolt Straightening Machine
The AMH-B240 is an automatic bolt straightening machine for medium-range fastener production, covering bolts from 4 mm to 30 mm in diameter and 60 mm to 600 mm in length. Like the wider series, it is an integrated automated device combining servo, pneumatic and PLC technology for rapid straightening cycles. Its practical strength shows in mixed production: one reference line straightens M24 screws of 200 mm bolt length, M16 screws of 160 mm and M8 screws of 100 mm on the same cell — a real-world pattern for fastener manufacturers who run several sizes per shift rather than one part number for weeks.
A Complete Straightening Cell for Screw Production
In its reference configuration the AMH-B240 line consists of the screw bolt loader, a manipulator, the straightener, a straightness checking device and the screw bolt unloader. Parts enter from the loader, are presented and measured, corrected, verified and discharged — without an operator lifting a part between stations. The straightness checking device guarantees that every part leaving the cell has been measured against the tolerance, which is what makes the machine usable as a quality gate in a fastener plant rather than just a correction tool.
Auto loading and auto unloading units, plus the straightness checking unit itself, are designed to your requirements — the cell is engineered around your part spectrum and throughput, not assembled from fixed modules.
Why Screw Bolts Bend and How Straightening Fixes It
Threaded parts accumulate bends along the whole manufacturing route: heading and forming induce stress, thread rolling deforms the shank asymmetrically, heat treatment redistributes stress during cooling, and bin handling bows long slender screws. Downstream, a bent screw feeds badly in assembly lines, runs out in machining and fails final inspection.
The straightening process counters the bend at its root. Straightness is detected at predefined positions along the part; a controlled corrective force is applied to eliminate the internal stress that holds the bend; the corrected geometry is then re-measured. Because the stress is relieved rather than merely over-bent back, the corrected part keeps its straightness through subsequent handling, coating and assembly.
Suitable Workpieces
- Bolt diameter: 4 mm to 30 mm
- Bolt length: 60 mm to 600 mm
- Reference workpieces: M24 screws × 200 mm bolt length, M16 screws × 160 mm, M8 screws × 100 mm
- Typical parts: hex screws, socket screws, stud bolts and screw stock within the envelope
Running several sizes on one line is common — state the full size mix when inquiring so the loading, handling and tooling are configured for changeover rather than a single diameter.
Selection Guide: Fitting the Machine to Your Parts
- Size envelope. Diameter 4–30 mm and length 60–600 mm define the working window. For diameters above 30 mm or lengths beyond 600 mm, the AMH-B450 extends the range.
- Size mix and changeover. Mixed families such as M8–M24 on one cell need parameter storage per part number and quick tool change — describe your mix, not just your largest part.
- Thread protection. Threaded screws require correction tooling that preserves the thread flanks; plain stock allows simpler tooling.
- Quality gate. Decide whether every part must be verified (straightness checking device in-line) or only sampled. In fastener production, in-line verification is usually justified by the cost of a rejected lot.
The complete bolt & rod straightening machine range gives a side-by-side view of the AMH series for comparison.
CE, Automation and Industry Integration
The AMH-B240 can be delivered to CE standard and to higher automation levels, including remote diagnosis and workshop automation. Remote diagnosis connects our engineers to the machine over the network for fast commissioning support and troubleshooting; workshop automation interfaces tie the cell into your line control and production data systems.
FAQ
What sizes does the AMH-B240 straighten?
Screw bolts from 4 mm to 30 mm diameter and 60 mm to 600 mm length.
Can it run different screw sizes on one line?
Yes — the reference application runs M24, M16 and M8 screws on one cell. Parameter sets per part number and the loading concept are configured to your size mix.
What does the complete cell include?
In the reference configuration: screw bolt loader, manipulator, straightener, straightness checking device and screw bolt unloader. Loading, unloading and checking units are designed to your requirements.
Is the machine available with CE marking?
Yes, CE standard is available, along with higher automation levels such as remote diagnosis and workshop automation.
What information should an inquiry include?
Workpiece drawings with diameters and lengths, thread condition, material grade, current straightness deviation, the tolerance to hold, and target throughput.