Surface Grinding Machine, Machines for metal work, produced by Koyo Machine Industries.
	Koyo Machine Industries Co., Ltd. is represented in Europe by Crystec Technology Trading GmbH
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Surface Grinding Machine, Machines

Koyo is proud of it's diverse line of surface grinding machines to achieve very good flatness, parallelism and surface finish of workpieces.  Through mechanical and electrical engineering expertise, Koyo continues to re-examine the essential factors in grinding machine technology in order to improve performance and meet the demands of this ever-changing market. These factors include: precision, efficiency, rigidity, stability, stiffness, automation, and more.  Koyo's on-going attention to automation has resulted in another step forward towards minimal manpower and unstaffed operations.
Koyo has developed a superabrasive grinding technology to meet the high industry standards with accuracies reaching almost lapping quality.

Koyo can offer the following types of surface grinding machines:

Horizontal double disk grinding machine: HD type
Vertical double disk grinding machine: KVD type
Rotary table type surface grinding machine: R type

Grinding Wheels and Dressing

Koyo is using on a large percentage of its machines grinding wheels of cubic boron nitrid cBN or diamond wheels. For almost every surface grinding machine a special dressing and truing system is available as an option: electrical discharge truing E-dt.

Main Applications

Mass Production
e.g. bearings, bodies, brake disks, cages, cylinder planes, impellers, pistons, plates, rings, rods, rotors, sleeves, etc.
Special Applications
z.B. ceramic discs, piezo actuators, etc.

Crystec Technology Trading GmbH, www.crystec.com, +49 8671 882173

HD-type Koyo horizontal double disk grinder.

Koyo's HD (Horizontal Disc) Series of surface grinders have a unique, highly-rigid and very stiff structure to ensure super-precision for heavy-duty grinding applications.

HD-3	Compact type surface grinding machine, suitable for cBN and diamond wheel use.
HD-5	Superior durability and heavy-duty grinding machine capability for a wide range of applications.
HD-7 & HD-10	Rigid and stiff design, suitable for large workpiece grinding.

Special Features Available on HD Series Grinders:

• CNC machine control system
• Automatic loading/unloading system
• Automatic part feeder
• Highly-rigid and stiff square slide spindle
• Automatic dressing system
• Electro-discharge truing E-dt

Feed systems available for HD-type machines:
Thru-feed, through-feed	Rotary Carrier	Gun-feed	Swing-arm
Feeding for highly-efficient mass production of simple-shaped workpieces (bearings, piston rings, etc.)	Feeding for irregular-shaped workpieces and small components (connecting rods, rollers, cross-pins, etc.)	Feeding for oddly-shapedworkpieces and partial-surface grinding (brake discs, etc.)	Feeding for intricate workpieces and end face grinding (cross-pins, etc.)

Crystec Technology Trading GmbH, www.crystec.com, +49 8671 882173

KVD type Koyo vertical double disk grinder.

In the KVD (Koyo Vertical Disc) Series of surface grinders, large angular-thrust and ultra-precise roller bearings are used in the wheelspindle to ensure high-precision grinding.  The slim column design is ideal for space-saving integration with automatic machine loading/unloading and gauging systems.  These machines have gained world-wide acceptance in automotive, bearing, home appliance, and communications industries.

KVD-300II	In Model KVD-300II is one of our most popular grinders.  Its rigidity makes it great for grinding difficult materials.
KVD-301 & KVD-302	The KVD-301 is a single-surface grinder with high rigidity to ensure super-precision grinding and stability.
KVD-450	Model KVD-450 is highly rigid to ensure super-precision grinding and stability and is  designed to accommodate a wide variety of medium-sized workpieces.
KVD-580	Model KVD-580 is highly rigid to ensure super-precision grinding and stability and is designed to accommodate large workpieces.

Special Features Available on KVD Series Grinders:

• CNC machine control system
• Automatic loading/unloading system
• Automatic part transfer system
• Highly-rigid wheel head with tilting mechanism
• Automatic dressing system
• Electro-discharge truingE-dt

Feed systems available for KVD-type machines:
Thru-feed, through-feed	Rotary Carrier	Oscillation In-feed
Feeding for bearing rings, etc.	Workpieces are placed in pockets of the rotary carrier plate and pass between the upper and lower grinding wheels.  For ceramics, piston rings, roller bearings, gears, etc.	The combination of rotary carrier and oscillation functions used in this method achieve high efficiency.  For vanes, etc.

Swing-arm	Double Swing-arm	Collet Chuck
Workpieces are placed in a fixture jig plate which swings to the center of the spindle for grinding. For rings, rotors, etc.	Used to meet special requirements of various workpieces.  For gears, rollers, etc.	Clamped by collet chucks, workpieces are forced to rotate while the jig table swings 180° for grinding.   For   covers, etc.

Crystec Technology Trading GmbH, www.crystec.com, +49 8671 882173

R-type Koyo rotary table type surface grinding machine.

R-031	The R-031 surface grinding machine implements new technology by self-rotation of the part during grinding.
R-421 & R-422	With the R-421 surface grinding machine, mirror finishes are achievable on small parts by providing full automation and vacuum chucking of the part while eliminating excessive lapping.
R-431	The R-431 surface grinder makes it possible to grind the top and bottom faces of a part using one spindle.
R-631	The R-631 surface grinder makes it possible to simultaneously load and unload parts during the grinding process.
R-632	The R-632 surface grinding machine has two grinding wheel heads for rough and finish grinding to achieve high accuracies and mirror finishes.  This machine was manufactured specifically for the IT, Automotive, and Household Electronics industries.
RV2	Full automation and high productivity can be achieved by the RV2. Synchronized mechanism between the table and the loader.

Special Features Available on R Series Grinders:

• CNC machine control system

• Automatic loading/unloading systems

• Highly-rigid wheel head

• Various clamping systems

• Electro-discharge truing E-dt

Machine Configurations for R Series Grinders:

One spindle machine	Two spindles machine	Grinding several work pieces simultaniously

Crystec Technology Trading GmbH will be pleased to further discuss details with you.
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