Website Last Updated December 12, 2016  

Willis Machinery & Tools Co.

Willis Delta Grinding Machines

Surface Grinders

Saddle Type and Column Type Grinding Machines

 

Italian Built Surface Grinders

 

 

Delta surface grinders maintain a structure made of oversized, properly ribbed, Meehanite cast iron. These grinding machines include hydrostatic lubrication, on all axes, eliminating sliding friction and stick slip. Ground, class C3 ball screws assure great precision in the movement of these surface grinding machines. Delta grinding machines also incorporate a spindle that runs in a hydromatic bearing of Mackensen type. These grinders also maintain a dynamically balanced spindle motor to virtually eliminate possible vibration causes.

 

Diastep
Diastep

Operator friendly control with programmable rough fed, fine feed, spark out, and automatic wheel dressing cycle with vertical compensation.

Compact Plus NC  
Compact Plus NC

NC Control includes all of the Diastop functions plus menu on video for an easy, quick introduction of grinding cycle parameters. Memory of data for 10 different work pieces, additional dressing cycles, additional spark out cycles, and incremental positioning provided by an electronic hand-wheel are also provided functions.

Diatronic CNC  
Diatronic CNC

The vertical and cross axes can be interpolated in order to profile the wheel and to execute special grinding cycles. The number of axes can be increased for using rotary and/or tilting tables. The graphic display makes the insertion of the grinding cycle parameters quick and easy. Additional pages/screens and functions can be created at the customer’s request.

 

 

Standard Delta Surface Grinder Equipment Includes:
  • Proportional system for the movement of the longitudinal table
  • Hydraulic linear profiling device of the wheel
  • Quick vertical and transversal feed devices
  • Heat exchanger air/oil
  • Lexan
  • Aluminum safety guard with interlocking switch

Standard Delta Surface Grinder

 

 

 

Synthesis – Saddle Type

65/40

80/50

110/60

130/60

Surface of Table

12” x 24”

16” x 28”

20” x 40”

20” x 47”

Downfeed per Handwheel Revolution

0.04”

0.04”

0.04”

0.04”

Min. Programmable Vertical Feed

0.00005”

0.00005”

0.00005”

0.00005”

Crossfeed per Handwheel Revolution

0.04”

0.04”

0.04”

0.04”

Min. Programmable Transverse Feed

0.00005”

0.00005”

0.00005”

0.00005”

Power of Wheel Motor, HP

7.5

12

12

12

Approximate Mass of the Machine, Lbs.

5,500

8,800

9,500

12,000

Approximate Mass on the Table, Lbs.

1,200

1,800

2,200

2,600

 

Delta Grinder
DELTA - MINI

 

Mini – Column Type

12

15

Surface of Table

20” x 47”

20” x 59”

Min. Programmable Down Feed

0.00005”

0.00005”

Power of Wheel Motor, HP

15

15

Machine Weight, Lbs.

13,200

14,300

Admissible Mass on the Table, Lbs.

2,640

3,300

 

Delta Grinder
MAXI CNC Column Type Grinding Machine

 

Maxi CNC Column Type
  • Models Available in 9 sizes from 24” x 48” up to 32” x 120”
  • 20” x 4” Grinding Wheel
  • 20 HP Wheel Motor
  • 0.00005” minimum programmable downfeed
  • Hydrostatic lubrication for all sliding surfaces
  • Hydromatic spindle bearings