DD-7

Double Disc Grinder

The Glebar Advantage

The small machine footprint of the DD-7 is able to outproduce much larger double disc grinders when the component to be ground is small in diameter. Combining the latest in multi-axis slide controls, the machine can be specifically configured for your application.

The interface software can be designed to meet your production requirements, encompassing controls for all peripheral attachments such as robots and bowl feeders. In-line inspection can be deployed to automatically size adjust, further improving the machine's accuracy and repeatability.

Touchscreen HMI
Automation
Remote Connectivity
Safety Enclosure
Inline Gauging

Introducing the DD-7

  • The DD-7 is one of the most compact double disc grinding machines on the market.
  • The DD-7 is a versatile machine, offered in available 7" or 10" work wheels on a granite bed for reduced vibration and thermal stability. We can also install an enclosure with mist collection protecting the operator from debris and misting offering a clean and safe work environment.
  • Designed for grinding small diameter components, it accurately controls their length and perpendicularity.
  • The DD-7 can be configured in three fixturing modes, depending on the application, the shape of the part, and the degree of automation required.
Applications range from printed circuit board drill blanks, carbide pins, ceramic blocks, alumina tubes and roller bearings for the aerospace, automotive, medical, metals and mining markets..

DD-7 Highlights

Intuitive HMI Controls and Custom Software

Intuitive HMI Controls and Custom Software

The control software is entirely developed at Glebar and is fully customizable to address your application and process. The intuitive touch screen interface allows for ease of use and flexibility. The machine software interface was developed to allow an unskilled operator to run many high precision machines simultaneously. 

Three Fixturing Modes

Three Fixturing Modes

In Vertical Mode (sometimes referred to as carriage), parts are fed through the grinding wheels vertically using a precision-machined steel plate. Holes in the plate encapsulate the part during the grinding operation. High volume carbide drill blanks are processed automatically using this method. In Thrufeed Mode, components are fed in a continuous fashion through the machine, allowing for increased throughput. Silicon nitride roller bearings are ground using this method. In Precision Fixture Mode, a precision fixture is mounted on a high accuracy slide. Square ceramic blocks can be perpendicularly ground using this mode of operation. A competing process would be to surface grind parts in batches - a non-continuous, and therefore, slower method of manufacturing.

Fast and Precise Operation

Fast and Precise Operation

The DD-7 uses brushless servo motors versus stepper motors. This is a faster and more precise way of moving slides. A servo-driven, close-looped drive offers the operator a high degree of control over the parts being ground.  0.1 micron linear glass scales coupled with absolute encoders on the axis make the machines faster and highly precise. An available brake dresser is equipped with a diamond roll to dress both wheels.

Remote Connectivity

Remote Connectivity

Remote connectivity simplifies troubleshooting and maintenance.

Key Features

  • Fast operation
  • Small footprint
  • Simple setup and control
  • Bowl feeding with warning beacons
  • Robot integration
  • Gauging integration
  • Simple wheel adjustment
  • Automatic wheel dressing
  • Fully customizable

Specifications

  • Grinding Diameter Capacity : MAX 0.500" (13mm) - MIN 0.031" (0.8mm)
  • Work Wheel Diameter : Two 7" (178mm) wheels or Two 10" (254mm) wheels
  • Work Wheel Power : 2 x 3 HP (2.2kW)
  • Work Wheel RPM : 3450
  • Work Wheel Length : 1" (25mm)
  • Machine Weight : 5500 lbs.
  • Grinding Length Stock : 5" (12.7cm)
 
 




 



Accessories

Brake Dresser

Brake Dresser

Equipped with a diamond roll to dress both wheels.

Bowl Feeder

Bowl Feeder

Designed to part specifications and integrated with machine controls. Custom feeding is available built to part specification.

Conveyors

Conveyors

Built specific to the part, Glebar offers a variety of conveyors which move parts through the process seamlessly and quickly.

In-Line Gauge

In-Line Gauge

Diameter contact gauge mounted on exit side of the machine measures the ground part. Diameters at several points can be measured, used for size compensation, and compared against high and low user-defined limits. Contact measurement is unaffected by coolant.

Laser Marking

Laser Marking

Integrates laser marking process directly into the cell.  

Mist Collector

Mist Collector

Collects and removes debri and dust from the work area.

Off-machine Wheel Balancing System

Off-machine Wheel Balancing System

Comes with arbor, flange with four weights and stand. Balanced grinding wheels are critical for high precision parts.

Post Process Gauging

Post Process Gauging

Post grinding and cleaning, the data is collected, analyzed and fed back to the machine for automatic size compensation. Measurements are shown on a trend graph on the machine control.

Part Counter

Part Counter

Built specific for the part; integrated into the cell.

Robot Pick & Place

Robot Pick & Place

Automatically picks parts from trays, loads into machine, unloads and places back to parts tray. Fully guarded and interlocked access doors. Robot arm incorporates two grippers for staging the loading and unloading during the grind cycle, reducing idle time.

Three-Stage Recirculating Coolant System

Three-Stage Recirculating Coolant System

30 gallon capacity with two removable settling tanks centrifugal pump & filtration package

Select Case Studies

Select Components Ground on a Glebar DD-7

Below is a sample of select components Glebar has ground, on this machine, over the years. Please contact us and send us your drawing for a personal consultation.

Composite Strips

Read Case Study >

Circuit Board Drill Blanks

Read Case Study >

Alumina Tube

Read Case Study >

Carbide Drill Blank
Orthodontic Wire

Please fill out as much information as possible. You will receive an email confirmation. One of Glebar engineers will contact you within 24 hours.

Contact Information

 

Files / Drawings Upload

If you have relevant drawings or illustration files, please upload them here. Files should be in .jpg, .pdf, or .tiff format and should be 10MB or less in size. If you need assistance regarding upload, please call us (201) 337-1500

General Information

Need help or have questions?
Please contact Mark Bannayan at 201-644-2020 or mbannayan@glebar.com.

Download our NDA agreement here