Product

Gantry Automatic Loading and Unloading Machine

The gantry automatic loading and unloading machine is a Cartesian-structure automation unit paired with CNC lathes, using servo-driven axes and pneumatic or servo grippers to pick, clamp and unload workpieces automatically — ideal for continuous unattended machining of shafts, rings and disc parts.

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Gantry Automatic Loading and Unloading

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Product Overview

A gantry automatic loading and unloading machine (gantry loader) is a Cartesian-coordinate automation unit that works in line with CNC lathes to pick, clamp and unload workpieces automatically. Driven by servo motors along X/Z linear axes, it takes blanks from a magazine, conveyor or vibratory feeder, orients and flips them as required, loads them into the lathe chuck or collet, and after machining removes the finished part and places it in the output magazine — upgrading one operator per machine to one operator for several machines, or fully unmanned continuous machining.

Compared with articulated robot arms, gantry loaders offer greater structural rigidity, travel customized to the machine layout, lower unit cost and a more stable cycle time. They are ideal for high-volume, long-run production of a single or a few part types. Combined with an automatic magazine and part-present / jam detection, they can run unattended for hours. Typical applications include automotive components, hydraulic valve parts, bearing rings, fasteners and connectors for turning and turn-mill operations.

⚙️ 1. Drive and Motion System Specifications

Parameter	Typical Range / Description
Structure	Gantry (portal) or cantilever Cartesian frame; aluminium profile plus steel columns / crossbeam, X-axis travel customized to the machine layout
Drive type	Servo motor + precision rack and pinion / ball screw + linear guideways; X/Z two-axis interpolation (expandable to three or four axes)
Servo power	X axis 400 W–1.5 kW; Z axis 400 W–750 W, matched to gripper payload and travel speed
Repeat positioning accuracy	±0.05 mm standard; down to ±0.02 mm for high-precision models
Max travel speed	X axis 1.5–3 m/s; Z axis 1–2 m/s; S-curve acceleration and point teaching supported
Gripper payload	5–30 kg standard (gripper plus workpiece); up to 50 kg for heavy-duty versions
Transmission protection	Linear guideways and ball screws fully enclosed with bellows and sheet-metal covers against coolant and chips
Lubrication	Automatic centralised lubrication for guideways and screws (reservoir or pump); maintenance interval ≥ 6 months

🎯 2. Loading and Unloading Process Parameters

Parameter	Typical Range / Description
Machines served	CNC lathes, turn-mill centres and Swiss-type lathes; single-machine or two / multiple-machine lines
Gripping method	Pneumatic two-finger / three-finger grippers, servo grippers, magnetic or vacuum grippers, selected by material and geometry
Chuck interface	Compatible with three-jaw chucks, collets and hydraulic chucks; two-way interlock with the machine clamp / unclamp signals
Part orientation	Optional 90° / 180° flip cylinder or servo flip axis for two-operation (both-face) machining
Cycle time	Approx. 8–25 s per part including pick-up, travel, clamping and unloading, interlocked with the machining time
Clamping repeatability	Position deviation within a batch ≤ 0.05 mm, ensuring consistent machined dimensions
Position detection	Gripper open / close in position + part-present detection + chuck clamped confirmation: triple fool-proofing against empty clamping and collisions
Magazine stations	1–4 stations standard (blank / finished / rework zones); expandable to multi-layer trays and magazine-type feeding
Chip and dust control	Optional air-blow chip removal and centralised chip collection to avoid chips affecting clamping accuracy

🏋️ 3. Workpiece Range and Capacity

Parameter	Typical Range / Description
Workpiece diameter	Φ 5–150 mm (shaft, sleeve, disc and ring parts)
Workpiece length	10–300 mm; extended Z-axis travel available for long shafts
Single part weight	0.05–15 kg standard; up to 30 kg with reinforced structure
Throughput	Approx. 120–450 parts/h per machine, matched to the machining cycle; doubled on two-machine lines
Magazine capacity	200–1500 parts per station standard; over 3000 parts with multi-layer trays
Materials	Carbon steel, alloy steel, stainless steel, brass, aluminium and cast iron; polyurethane or carbide gripper jaws available
Machine weight	Approx. 400–1800 kg including frame, magazine and electrical cabinet
Footprint	Floor-standing frame levelled together with the machine; approx. 1.5–3.5 m²

🔌 4. Electrical and Control Specifications

Parameter	Typical Range / Description
Control system	Dedicated motion controller / PLC with servo positioning control; colour touch-screen HMI
Programming	Teach-in plus parameter recipes — switch part types by selecting a recipe, no specialist programming needed
Communication	Dry-contact I/O interlock with the machine; optional RS485 / Ethernet / Modbus TCP for MES integration
Safety	Fully enclosed guarding / safety light curtain, emergency-stop circuit, door interlock, over-travel and overload protection
Detection and alarms	Audible and visual alarms with automatic stop for part shortage, jamming, empty grip, double pick and machine faults
Power supply	3-phase 380 V 50 Hz (220 V / 60 Hz available); air supply 0.5–0.7 MPa
Environment and protection	Operating temperature 0–45 °C; machine IP54, electrical cabinet up to IP65

📋 5. Quick Selection Guide by Machine and Part Size

Part Size	Recommended Model / Travel	Gripper Payload	Reference Cycle Time
Small parts (Φ5–30 mm, ≤1 kg)	Cantilever type, X travel 800 mm	5 kg	8–15 s/part
Medium parts (Φ30–80 mm, 1–5 kg)	Gantry type, X travel 1200 mm	15 kg	10–20 s/part
Large parts (Φ80–150 mm, 5–15 kg)	Heavy-duty gantry, X travel 1500–2000 mm	30 kg	15–25 s/part

Note: actual cycle time = pick-and-place time + machining time + clamping time. The table above is a general reference; final selection depends on the machine model, chuck type, workpiece material and workshop layout.

Customization and Service

Beyond standard models, we build customised solutions around your machine model, part geometry, chuck interface and workshop layout, including two- or multi-machine lines, twin-gripper simultaneous loading, automatic flipping and second-operation machining, multi-layer magazines, centralised chip collection and MES data integration. Send us your sample parts and process parameters, and our engineers will recommend the right solution and provide a quotation.

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