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Help CenterXiongxing XX-750S Automatic Multi-Head Gem Faceting CNC Machine for 0.75-28mm Gemstone Cutting Polishing
Product Spotlights
A multi-needle, multi-head design allows multiple gems to be processed simultaneously in one clamping. For standard round 2 mm stones, 60 pieces can be processed at one time; for stones above 3 mm, 20 pieces can be processed at one time, greatly improving batch production efficiency.
2. Fully Servo-Driven Precision Control
The grinding disc is driven by the grinding disc motor. The gem angle is achieved through the coordinated action of the t
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Xiongxing Gem Multi-Head Faceting CNC Machine (Servo Motor)
Serial No.: 810501888
Model: XX-750S
I. Product Introduction
The Xiongxing Gem Multi-Head Faceting CNC Machine (referred to as the “Angle Machine”) is a computer-controlled automated faceted gem processing machine developed by Guangzhou Xiongxing Gem Machinery Co., Ltd. Founded in 2003, 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 faceting, grinding, and polishing colored gemstones, zircon, glass, crystal, ruby, and semi-precious stones.
Core Processing Capabilities:
· For standard round stones of 2 mm, 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.
· Gem processing angle, size, and diameter range: 0.75 mm–38 mm.
· Aluminum dop bar length: 370 mm–520 mm.
· Suitable for grinding discs with diameters of 400 mm, 620 mm, and 750 mm.
Applicable Stones: Corundum, spinel, ruby, peridot, topaz, sapphire, tourmaline, garnet, agate, zircon, glass, crystal, and semi-precious stones.
Applicable Shapes: Diamond, egg, pear, tortoise, marquise, heart, round, square, square grass, cushion, regular octagon, elongated octagon, and other 100 styles.
II. Installation Steps
1. Unpacking and Cleaning
Remove all packaging and shipping fasteners. Wipe the equipment surface, grinding disc tray, motor, and other key parts with a clean cotton cloth. Check for damage during transportation.
2. Machine Installation
Place the machine steadily on a sturdy workbench. The XX-750S has dimensions of 160 × 160 × 170 cm and weighs 800 kg. Ensure the installation floor is level and has sufficient load-bearing capacity. Provide enough space during operation for loading and unloading the aluminum dop bars and for picking and placing gems.
3. Power Connection
Confirm that the power supply voltage matches the machine nameplate requirements. Connect to AC 380 V power and ensure good 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 operation to observe for abnormal vibration or noise.
5. Tool Calibration and Adjustment
Install the aluminum dop bar and fixture. Adjust the lifting table and other components to ensure an accurate processing reference. This is a key step for ensuring processing accuracy.
III. Core Advantages
1. Multi-Head High-Efficiency Processing
A multi-needle, multi-head design allows multiple gems to be processed simultaneously in one clamping. For standard round 2 mm stones, 60 pieces can be processed at one time; for stones above 3 mm, 20 pieces can be processed at one time, greatly improving batch production efficiency.
2. Fully Servo-Driven Precision Control
The grinding disc is driven by the grinding disc motor. The gem angle is achieved through the coordinated action of the tilt-angle servo motor and the overall lifting stepper motor. The gem rotation angle is driven by the rotation-angle servo motor, which drives the screw on the aluminum dop bar. The screw drives the worm gear to rotate the gem, providing high positioning accuracy.
3. Oscillating Grinding Design
A servo motor that moves back and forth at the center of the grinding disc has been added to the aluminum dop bar, causing an oscillating grinding effect on the gem during processing. This effectively improves processing quality and surface finish.
4. Wide Material and Shape Compatibility
Suitable for dozens of gem materials such as corundum, ruby, sapphire, tourmaline, garnet, etc. It can process more than ten faceted shapes, including diamond, egg, heart, marquise, round, square, and others.
5. Compatibility with Multiple Grinding Disc Specifications
Suitable for grinding discs with diameters of 400 mm, 620 mm, and 750 mm. The aluminum dop 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-750S is to realize automated processing of gem facets through coordinated control of multi-axis servo/stepper motors:
· Grinding disc drive: The grinding disc motor drives the grinding disc to rotate at high speed, performing cutting and grinding of the gem surface.
· Angle positioning: The tilt-angle servo motor controls the tilt angle of the gem (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 screw on the aluminum dop bar. The screw drives the worm gear to rotate the gem to a set angle, achieving indexing positioning.
· Oscillating grinding: An independent servo motor drives the aluminum dop bar to move back and forth at the center of the grinding disc, forming an oscillating grinding path.
2. CNC System Control
A computer numerical control system is used. Processing parameters such as angle, rotation angle, feed speed, and oscillation amplitude can be preset to achieve fully automated batch processing. Operators can set programs and monitor in real time through the control box.
3. Complete Processing Flow
The multi-needle, multi-head faceting process is as follows:
Preforming/blank preparation (cutting → preforming → vibratory barrel polishing → subsequent faceting) → stone bonding → front facet grinding → front facet polishing → gem transfer/remounting → back grinding → back polishing → adhesive removal and cleaning.
Supporting equipment configuration: cutting machine → shaping machine → multi-needle, multi-head CNC faceting machine.
V. Functional Operation Steps
Note: The XX-750S is a CNC automatic model. The specific operation interface and parameter settings shall be subject to the actual operation of the supplied control box. The following is a general operating procedure for reference.
1. Power-On and Parameter Setting
Connect AC 380 V power, start the control box, and set processing parameters such as angle, rotation angle, feed speed, and oscillation parameters according to the gem type and facet shape.
2. Stone Bonding and Clamping
Bond the preformed gem blanks to the aluminum dop bar, ensuring firm bonding and consistent positioning. Then install the aluminum dop bar into the machine fixture.
3. Front Facet Grinding
Start the grinding disc motor, call the front 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. Gem Transfer/Remounting
Remove the gems from the aluminum dop bar, turn them over, and rebond them to prepare for back processing.
VI. Tools and Consumables
Commonly used supporting tools and consumables:
Category Item
Grinding tools Diamond grinding discs (for 400/620/750 mm specifications), aluminum main lapping disc
Polishing materials Zinc polishing disc, diamond powder (diamond micron powder), aluminum oxide polishing powder, ruby powder
Bonding materials Gem adhesive (sealing wax/rosin adhesive), strong adhesive
Fixtures and accessories Aluminum dop bars (370–520 mm), worm gears, screws, stone bonding fixtures
VII. Technical Parameters
Item Parameter
Code 810501888
Model XX-750S
Brand Xiongxing
Input voltage AC 380 V
Motor power 7.5 kW
Speed 1500 r/min
Dimensions 160 × 160 × 170 cm
Weight 800 kg
Processing diameter range 0.75 mm–28 mm
Grinding disc diameter 400 mm / 620 mm / 750 mm
Aluminum dop bar length 370 mm–520 mm
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