Square Tube Sawing Machine
Industrial Square Tube Sawing Machine: Technical Specification & Procurement Guide
The Industrial Square Tube Sawing Machine is engineered for high-precision, burr-free cutting of structural square and rectangular hollow sections (HSS). Built around a rigid cast-iron base and driven by a servo-controlled feed system, this machine targets high-volume manufacturing environments where dimensional accuracy and continuous multi-shift operation dictate line throughput.
Unlike general-purpose chop saws, this system combines rigid workpiece clamping on both sides of the cut (dual-action horizontal and vertical clamping) with programmable cutting speeds. This configuration minimizes vibration, extends TCT saw blade or cold saw life, and eliminates the thermal distortion typical of abrasive cutting methods.
Technical Specifications
|
Parameter |
Standard Model (STS-100) |
Heavy-Duty Model (STS-150) |
|
Max Square Tube Cutting Capacity |
100 x 100 mm (3.94 x 3.94 in) |
150 x 150 mm (5.90 x 5.90 in) |
|
Max Rectangular Tube Capacity |
120 x 80 mm (4.72 x 3.15 in) |
200 x 100 mm (7.87 x 3.94 in) |
|
Max Wall Thickness |
6.0 mm (0.24 in) |
12.0 mm (0.47 in) |
|
Saw Blade Diameter |
285 - 315 mm |
360 - 450 mm |
|
Spindle Speed Range |
60 - 200 RPM (Inverter-driven) |
40 - 120 RPM (Gearbox driven) |
|
Feeding Servo Motor Power |
1.5 kW |
3.0 kW |
|
Saw Blade Motor Power |
4.0 kW |
7.5 kW |
|
Length Cutting Accuracy |
+/- 0.10 mm |
+/- 0.15 mm |
|
Minimum Remnant Length |
50 mm |
80 mm |
|
Operating Air Pressure |
0.6 - 0.8 MPa |
0.6 - 0.8 MPa |
|
Machine Shipping Dimensions |
2400 x 1600 x 1900 mm (Fits standard 20ft container) |
3100 x 1800 x 2050 mm (Fits standard 40ft container) |
Key Features
Dual-Side Hydraulic Clamping: Simultaneous vertical and horizontal hydraulic jaws secure the tube directly adjacent to the kerf. This eliminates vibration and prevents wall collapse on thin-gauge structural tubing.
Closed-Loop Servo Feeding: Length positioning is managed by an absolute encoder servo drive coupled with a precision ball screw, maintaining repeatable cut lengths over multi-shift production runs.
Automated Mist Lubrication: Programmable micro-lubrication applies synthetic cutting fluid directly to the saw teeth during the active cutting stroke, lowering friction and preventing chip welding without flooding the work area.
Integrated Chip Management: A built-in chip auger conveyor routes metallic swarf away from the cutting zone into an external collection bin, preventing chip accumulation in the gearbox housing.
Working Process
[Bundle Loading Racks]
|
v
[Infeed Roller Conveyor]
|
v
[Servo-Driven Length Positioning Stop]
|
v
[Dual Hydraulic Clamping (Vertical & Horizontal)]
|
v
[TCT Saw Blade Downfeed (Adjustable Hydraulic/Pneumatic Rate)]
|
v
[Automatic Retraction & Remnant Sorting]
|
v
[Outfeed Accumulation Table]
Loading & Feeding: Square tubes feed from the bundle loader onto the infeed roller table. The servo positioning carriage grips the trailing end and pushes the material forward to the programmed cut length.
Clamping: Dual hydraulic vices clamp the tube firmly on both sides of the cutting plane to eliminate harmonic vibration.
Cutting Stroke: The spindle motor engages while the saw head feeds downward at a controlled rate governed by proportional hydraulic valves.
Retraction & Sorting: Upon completing the cut, the saw head retracts instantly, vices release, and the cut piece drops onto the outfeed conveyor while short remnants are routed to a scrap bin.
Applications
Automotive Spaceframes & Chassis: Cutting high-strength low-alloy (HSLA) structural square tubing for truck frames, bus roll-over protection structures (ROPS), and seat sub-assemblies.
Industrial Racking & Storage Systems: High-speed blanking of upright columns and beam connectors where squareness (90 degrees +/- 0.05 degrees) is critical for vertical assembly alignment.
Solar Mounting Infrastructure: Processing galvanized steel square torque tubes for single-axis solar trackers with zero coating flaking at the cut edges.
Commercial Furniture & Fitness Equipment: Clean, burr-free cutting of thin-wall carbon steel tubing (1.5 mm - 3.0 mm) to prep components for automated robotic welding cells.
Tooling & Configuration
Blade Selection: Compatible with Tungsten Carbide Tipped (TCT) circular saw blades (Z = 60 to 120 teeth depending on wall thickness) and bi-metal band saw blades for heavy-wall structural profiles.
Control System: Siemens S7-1200 PLC paired with a 10-inch color HMI touch panel. Operators input batch quantities, cut lengths, and blade life threshold warnings directly into job queues.
Hydraulic Power Unit: Integrated Vickers/Rexroth proportional valves deliver adjustable clamping pressure to prevent crushing thin-walled profiles (< 1.5 mm) while securing heavy-wall sections (> 6 mm).
Customization
Unmanned Automation Lines: Integration with automatic bundle destackers, laser marking units for part traceability, and multi-station sorting robots.
Extended Infeed/Outfeed Tables: Custom modular roller tracks or belt conveyors scaled from 3 meters to 12 meters based on raw stock lengths.
Specialized Jaw Profiles: Custom-milled jaws matching non-standard radii, thick-wall rectangular profiles, or multi-channel extruded profiles.
Quality & Testing
Manufacturing operations adhere to ISO 9001 quality management standards, combining heavy-gauge plate cutting via CNC fiber lasers, precision boring of cast-iron saw heads on Mazak horizontal machining centers, and manual scraping of slide ways to achieve sliding parallelism within 0.015 mm / 1000 mm.
Dimensional Audit: Every machine frame undergoes three-coordinate measuring machine (CMM) verification for squareness and parallelism before sub-assembly.
No-Load & Load Run Testing: Each unit runs a continuous 72-hour dry cycle test followed by an 8-hour live cutting test using standard carbon steel square tubing (100 x 100 x 4 mm) to verify cutting squareness, feed stability, and chip evacuation rates.
Electrical Compliance: Control cabinets are wired to NFPA 79 and CE standards, utilizing Schneider and Siemens industrial switchgear with phase-loss protection and emergency stop category 0 compliance.
FAQ
Q: How does the machine prevent burrs on the cut edge of the square tube?
A: Burr formation is prevented through three combined mechanisms: dual-side hydraulic clamping that eliminates micro-vibrations during blade exit, rigid TCT saw blade tensioning, and precise variable frequency downfeed control. The resulting cut requires no secondary manual deburring or grinding before welding.
Q: What is the minimum remnant length, and how does the machine handle scrap optimization?
A: The standard pneumatic gripper leaves a minimum remnant length of 50 mm. The PLC control software includes a stock optimization algorithm that calculates multi-part cutting patterns from standard 6-meter or 12-meter raw tube lengths to minimize scrap generation.
Q: Can this saw handle stainless steel and aluminum square tubing?
A: Yes. By swapping the TCT blade specification, adjusting spindle RPM via the HMI inverter setting, and switching the lubrication medium (applying specialized neat cutting oil for stainless steel or synthetic emulsion for aluminum), the machine processes austenitic stainless steel (304/316) and structural aluminum extrusions (6061-T6).
Q: What is the expected lifespan of a TCT saw blade, and how is replacement managed?
A: A standard TCT blade yields between 3,000 to 5,000 cuts on 100 x 100 mm carbon steel tubing depending on wall thickness and feed rate. Blade wear is tracked via an automated cycle-count warning on the HMI. Blades can be removed and replaced using standard hand tools within 10 minutes.
Q: What utilities and shop floor preparations are required prior to installation?
A: The installation site requires a leveled concrete floor (150 mm minimum thickness), a 3-phase power supply (standard 380V/480V, 50/60Hz), and an independent compressed air drop supplying a stable 0.6 MPa to 0.8 MPa at 300 L/min. Standard machines ship fully assembled in containers, requiring only anchor bolt fixation and utility hookups.
Q: What is the standard warranty and spare parts availability for international orders?
A: The machine carries a 12-month standard warranty covering all mechanical and electrical assemblies (excluding consumable saw blades and seals). Critical electrical components (PLC, inverters, servo drives) are globally sourced standard items, and replacement pneumatic cylinders, valves, and wear plates are stocked in our central warehouse for 48-hour dispatch
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