Standard Double Sided Lapping Machine

Brief Introduction

Double Sided Lapping and Polishing Series features a pair of parallel plates that are not only able to achieve the accurate thickness, but also improve the parallelism, flatness and roughness of workpieces. The series has the ability to simultaneously process two opposite sides with twice the efficiency compared to Flat Lapping Machine. Therefore, it is suitable for workpieces with parallel surfaces.

Specifications

Key Facts

Sampling

Double Sided Process ◉
Soft Start And Soft Stop
Orbital Workpiece Process
200 KGF Downward Pressure
Diamond-Electroplated Conidtioning Wheels ◉
Touch Screen Interface

Engineering Intent

During operation, the upper and lower plates exert pressure on the workpieces from two directions while rotating independently and simultaneously. Meanwhile, the sun wheel drives the planet wheels in a circular orbit to achieve double-sided processing. Additionally, a non-contact height gauge inspects the feeding depth of upper plate for measuring the thickness of the product. To maintain parallelism between the plates, it is imperative to evenly distribute at least of three planet wheels across the lower lapping plate.

System Model	DYB6S	DYB9S	DYB13-6S
Diameter of Upper/Lower Plates (mm)	∅ 376 × ∅ 158 × 23	∅ 635 × ∅ 235 × 30	∅ 965 × ∅ 395 × 45
Max. Diameter of Workpiece (mm)	∅ 125	∅ 210	∅ 300
Process Thickness (mm)	0.2 ≤ t ≤ 20	0.2 ≤ t ≤ 20	0.2 ≤ t ≤ 20
Number of Planet Wheel	5	5	6
Configuration of Planet Wheel	DP12 \| Z=66 \| α=20°	DP12 \| Z=108 \| α=20°	DP12 \| Z=152 \| α=20°
Rotation Rate of Lapping Plates (rpm)	0-60	0-60	0-50
Main Motor (kW)	0.4	5.5	7.5
Auxiliary Motor (kW)	0.6	0.125	1.5
Weight (kgf)	1500	2000	2700
Dimension (L×W×H) (mm)	750 × 1020 × 1930	960 × 1350 × 2450	1340 × 1690 × 2650

1. Difference Between Lapping and Polishig Equipment

The primary way to distinguish between lapping and polishing models is whether they are equipped with a Facing & Grooving System (FGS), even if they share the same structural design. Secondly, differences also lie in the materials of the slurry and plate, as well as how the abrasive is applied to the plate.

2. Difference Between the Standard and Advanced Models

The Double Sided Lapping and Polishing series features a pair of synthetic abrasive plates positioned vertically. This series is particularly dedicated to achieving parallelism, as well as flatness and roughness on double-sided objects. Originating from Flat Lapping, it has evolved into a distinct series, although it maintains the same abrasive techniques.

There are two variations of the upper plate within the series: Standard and Advanced. The Advanced version is more precise in terms of parallelism and stability, supported by two uprights for the upper plates. Specifically, the Advanced model is outfitted with a Dual Blade Facing & Grooving System (FGS) and an independent FGS spindle, surpassing the Standard model in performance. Consequently, the Standard model often utilizes durable abrasive plates, like cast-iron, whereas the Advanced model is compatible with a wider variety of lapping plates.

3. Facing & Grooving System (FGS)

The Facing & Grooving System (FGS) is commonly implemented in lapping machines to linearly trim along the abrasive layer of lapping plate with a disc cutter. This is done to restore the flatness of the abrasive layer to its original condition. Meanwhile, creating spiral grooves on the lapping abrasive serves to hold the slurry within the grooves for a longer period. Additionally, grooving evenly distributes the consumption of the abrasive, extending the precision of the lapping layer.

Unlike flat polishing machines, which typically do not include FGS, some polishing pads are pre-grooved before leaving the factory. Likewise, lapping plates with hard abrasives, such as cast-iron plates that are difficult for cutters to shape. For this situation, a diamond-electro-plated conditioning ring is used for plate adjustment instead.

*The Dual Blade Facing & Grooving System is equipped with two cutters installed in opposite directions, targeting both upper and lower plates.

Facing & Grooving
System (FGS)

4. Repairing Cast Iron Plate

The lapping machine equipped with a cast iron plate might not come with a Facing & Grooving System, as it's unable to shave the cast iron abrasive for repairs due to the material's exceptional hardness and toughness. As a result, we opt for a (double-sided) diamond-electro-plated conditioning ring instead. This approach utilizes the concept of lapping, where the cast iron is lapped by the diamond layer on the conditioning ring. When using this ring, a lubricant is also necessary to smooth the repair process.

Diamond-Electro-Plated
Conditioning Ring

Cast Iron
Lapping Plate

Dyan Precision Technology situated in the innovative city Shenzhen, occupies a production plant area of approximately 13,000 square meters and specializes in the field of grinding, lapping and polishing technology. With a focus on research and development, production, and sales, the company offers a diverse range of high-precision equipment such as flat lapping and polishing equipment, wafer grinder, wax bonder, screen polisher, and associated consumables. These products find extensive application in the precise processing of mechanical seals, semiconductor fabrication, smart phone, optics, aerospace, aviation, automotive, LED technology, metrology, solar enegery, nuclear energy, jewellary, and various other industries.

*Reminder: we only offer once free and limited sampling. The expenses of delivery and prourement of the sample entity are to be covered by the sender.

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FAQs

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Process	Industry	Product
Double Sided Lapping and Polishing	Mechanical Seal	Seal Ring	Valve Plate	Pump Component	Fueling Component	*gas, liquid, oil
	Wafer Substrate	AIN	GaAs	GaN	Ge	Ge-Si	Glass
		InP	InSb	Quartz	Sapphire	Si	SiC
		ZnO
	Smartphone	Camera Lens	Eject Pin Key	Touch Screen
	Flat Optics	Holographic Slide	HUD Screen Glass Slide	Microscope Reference Slide	Optical Lens	Optical Reflector	Scintillator Cube
	Vehicle	Bearing	Clutch	Engine Mechanism	Friction Plate	Gear
	Clean Energy	Electric Vehicle Battery Partition		Nuclear Energy	Solar Wafer	Wind Enegery
	Metrology	Benchmark	Calibration	Gauge Block
	Others	Graphite	Cutting Tools	Mechanism Components, etc.

Sample Application	Major Material	Dimension (mm)	Applied Machining	Flatness (μm)	Parallelism (mm)	TTV (μm)	Roughness (Sa/nm)
Sealing Ring	Ceramic Al₂O₃	Φ82×5.5	Lapping	1.487	1.653	4.841	Not Specified
Automotive Component	SUS 304	Φ80×4.75	Lapping Polishing	2.347	2.815	5.642	16.374
Pump Plate	SUS 316	Φ232×47	Lapping	1.775	2.656	4.147	Not Specified
Valve Plate	SUS 304 and Cooper	Φ173×8	Lapping	2.886	3.132	8.667	Not Specified
Valve Pad	Epoxy Resin	Φ260×0.77	Lapping	2.835	2.989	Not Specified	Not Specified
Pump Hatch	Carbide Metal	Φ103×4.05	Lapping	1.823	2.138	1.985	Not Specified
Fingerprint Film	Ceramic ZrO₂	Φ52×0.8	Lapping Polishing	1.583	1.973	2.112	4.349
Gauge Block	7075 Aluminum	33×18×6	Lapping Polishing	0.313	0.524	0.749	12.845

Accessible Flatness (Φ50mm)	0.002 mm
Accessible Parallelism (Φ50mm)	0.01 mm
Accessible Roughness (Aluminum)	Ra. 0.001 μm

Brief Introduction

Duoble Sided Lapping Process

General Slurry Distributor

Abrasive Dressing Stone

Infrared Safeguard

Engineering Intent

1. Difference Between Lapping and Polishig Equipment

2. Difference Between the Standard and Advanced Models

3. Facing & Grooving System (FGS)

4. Repairing Cast Iron Plate

Sampling

Find Solutions

FAQs

DYS Substrate Flat Lapping Machine

DYG1000 Semi Automatic Wafer Grinder

DYG2000 Full Automatic Wafer Grinder

DYG3000 Full Automatic Wafer Grinder

DYC2000 Full Automatic Edge Grinder

Duoble Sided
Lapping Process

Abrasive Dressing
Stone

Infrared
Safeguard