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Help CenterXiongxing XX-750D Automatic Multi-Head Gem Faceting CNC Machine for 0.75-28mm Gemstone Cutting Polishing
Product Spotlights
With a multi-pin, multi-head design, multiple gemstones can be processed simultaneously in one clamping. For 2 mm standard round stones, 60 pieces can be processed at one time; for those above 3 mm, 20 pieces can be processed at one time, greatly improving batch production efficiency.
2. Full Servo-Driven Precision Control
The grinding disc is driven by the grinding disc motor. The gemstone angle is achieved through the coordinated a
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I. Product Introduction
The Xiongxing Gem Multi-Head Faceting CNC Machine (referred to as the “Angle Machine”) is a computer-controlled automated faceted gemstone processing equipment developed by Guangzhou Xiongxing Gem Machinery Co., Ltd. Founded in 1997, the company integrates scientific research, design, production, sales, and maintenance. Its products are exported to Southeast Asia, Russia, the Middle East, South America, Africa, Europe, and other countries and regions. The machine is mainly used for facet cutting, grinding, and polishing of colored gemstones, zircon, glass, crystal, ruby, and semi-precious stones.
Core Processing Capabilities:
· For 2 mm standard round stones, 60 pieces can be processed at one time; for standard round stones above 3 mm, 20 pieces can be processed at one time.
· High processing efficiency: one automatic machine can produce 60 workpieces in 15 minutes.
· Processing range for gemstone angle, size, and diameter: 0.75 mm–38 mm.
· Aluminum bar length: 370 mm–520 mm.
· Suitable for grinding discs with diameters of 400 mm, 620 mm, and 750 mm.
Applicable Gemstone Materials: Corundum, spinel, ruby, peridot, topaz/yellow gemstone, sapphire, tourmaline, garnet, agate, zircon, glass, crystal, and semi-precious stones.
Applicable Shapes: Diamond, egg, pear, tortoise, marquise, heart, round, square, Sifangcao (square-grass cut), cushion, regular octagon, elongated octagon, and 100 other styles.
II. Installation Steps
Note: The following installation steps refer to the general installation specifications for Xiongxing’s same-series gem faceting machines. As the XX-750D is a multi-head CNC model, for specific installation details, please refer to the printed manual supplied with the machine.
1. Unpacking and Cleaning
Remove all packaging and shipping restraints. Wipe the machine surface and key components such as the grinding disc tray and motors with a clean cotton cloth. Check for damage during transportation.
2. Complete Machine Installation
Place the machine stably on a sturdy workbench. The XX-750D has overall dimensions of 160 × 160 × 170 cm and weighs 800 kg. Ensure the installation floor is level and has sufficient load-bearing capacity. Provide sufficient space during operation for loading and unloading the aluminum bar and for placing and removing gemstones.
3. Power Connection
Confirm that the power supply voltage matches the machine nameplate requirements. Connect to AC 380 V power and ensure proper grounding.
4. Preliminary Inspection and Trial Run
Check whether all servo motor connections are normal and whether the grinding disc is securely installed. Run a trial to observe for abnormal vibration or noise.
5. Tool Calibration and Adjustment
Install the aluminum bar and fixture. Adjust the lifting table, etc., to ensure the machining datum is accurate. This is a key step for ensuring machining accuracy.
III. Core Advantages
1. Multi-Head High-Efficiency Processing
With a multi-pin, multi-head design, multiple gemstones can be processed simultaneously in one clamping. For 2 mm standard round stones, 60 pieces can be processed at one time; for those above 3 mm, 20 pieces can be processed at one time, greatly improving batch production efficiency.
2. Full Servo-Driven Precision Control
The grinding disc is driven by the grinding disc motor. The gemstone angle is achieved through the coordinated action of the swing-angle servo motor and the overall lifting stepper motor. The gemstone rotation angle is produced by the rotation-angle servo motor driving the lead screw on the aluminum bar; the lead screw drives the worm gear to rotate the gemstone, providing high positioning accuracy.
3. Oscillating Grinding Design
A servo motor that moves back and forth at the center of the grinding disc is added to the aluminum bar, causing an oscillating grinding effect during gemstone processing and effectively improving processing quality and surface finish.
4. Wide Material and Shape Compatibility
Suitable for dozens of gemstone materials such as corundum, ruby, sapphire, tourmaline, garnet, etc. It can process more than ten faceted shapes, including diamond, egg, heart, marquise, round, square, etc.
5. Compatibility with Multiple Grinding Disc Specifications
Compatible with grinding discs of 400 mm, 620 mm, and 750 mm in diameter. The aluminum bar length is adjustable from 370 mm to 520 mm, adapting to production needs of different scales.
IV. Working Principle and Functions
1. Precision Positioning and Drive System
The core working principle of the XX-750D is to realize automated processing of gemstone facets through coordinated control of multi-axis servo/stepper motors:
· Grinding disc drive: The grinding disc motor drives the disc to rotate at high speed to perform cutting and grinding on the gemstone surface.
· Angle positioning: The swing-angle servo motor controls the tilt angle of the gemstone (i.e., the facet angle), and the overall lifting stepper motor controls the lifting height.
· Rotation-angle positioning: The rotation-angle servo motor drives the lead screw on the aluminum bar; the lead screw drives the worm gear to rotate the gemstone to the set angle, achieving indexing positioning.
· Oscillating grinding: An independent servo motor drives the aluminum bar to move back and forth at the center of the grinding disc, forming an oscillating grinding path.
2. CNC System Control
A computerized numerical control system is used to preset processing parameters (angle, rotation angle, feed speed, oscillation amplitude, etc.), enabling fully automated batch processing. The operator can set programs and perform real-time monitoring through the control cabinet.
3. Complete Processing Flow
The multi-pin, multi-head faceting process is as follows:
Preforming and blanking (cutting → preforming → barrel polishing → subsequent faceting) → stone bonding → front facet grinding → front facet polishing → gemstone transfer/re-bonding → back grinding → back polishing → glue removal and cleaning.
Supporting Equipment Configuration: Cutting machine → shaping machine → multi-pin, multi-head CNC faceting machine.
V. Functional Operating Steps
Note: The XX-750D is a CNC automatic model. For the specific operation interface and parameter settings, the actual control cabinet supplied with the machine shall prevail. The following is a general operating procedure for reference.
1. Power-On and Parameter Setting
Connect to AC 380 V power, start the control cabinet, and set processing parameters (angle, rotation angle, feed speed, oscillation parameters, etc.) according to the gemstone type and facet shape.
2. Stone Bonding and Clamping
Bond the preformed gemstone blanks to the aluminum bar, ensuring firm bonding and consistent positioning. Then install the aluminum bar into the machine fixture.
3. Front Facet Grinding
Start the grinding disc motor, call the front-side processing program, and the machine automatically completes grinding of each front facet.
4. Front Facet Polishing
Replace with a polishing disc or switch to the polishing program to complete the front facet polishing process.
5. Gemstone Transfer/Re-Bonding
Remove the gemstones from the aluminum bar, turn them over, and re-bond them to prepare for back-side processing.
6. Back Grinding and Polishing
Call the back-side processing program to complete grinding and polishing of the back facets in sequence.
7. Glue Removal and Cleaning
After processing, remove the gemstones, remove the glue, and clean them to obtain finished faceted gemstones.
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