Grinding wheel mouting systems, exaples

Grinding machines are designed for various grinding wheel and segment mounting systems. Due to safety regulations, elements that directly match the grinding wheel must meet standard requirements. Examples are shown in the following Figures.

Designations:

Q - ratio of diameters
D - grinding wheel diameter
H - diameter of grinding wheel bore
df - flange diameter of wheel adaptor
DS = 1/2 (D - H) - height of grinding wheel side surfaces
h - coverage
b - width of gripping rim surface

Mounting systems:

  • Centre bore and clamping flange
  • Threaded inserts in the grinding wheel or segment
  • Mounting by means of a backplate
  • Segments mounted on a clamping fixture
  • Mounting by means of integral mandrel

Fig. By means of clamping flanges for wheels with small bore Q ≤ 0.20

Fig. By means of flange adaptor
for wheels with large central bore Q > 0.20

Fig. Mounted wheels and points

Fig. Hubbed flanges for straight wheels
(acc. to PN/M-60625)

Fig. Grinding wheel bolted
to a backplate and bolted
to the machine spindle


Fig. Grinding wheel cemented to
a backplate and bolted to
the machine spindle

Fig. Mounting system for a plug or cone
with a central threaded insert

Fig. Correct arrangement of inserts and bolts

 

Straight recessed flanges for plain, cutting-off wheels (with the exception of plain cutting-off wheels with D ≤ 230 mm for hand held grinders).

Straight recessed flanges for plain, cutting-off wheels should have the following diameters, depending on the operating speed
Diameter of flange df ≥ 0.2 D, where Vs ≤ 63 m/s and hole diameter H ≤ 0.1 D
Diameter of flange df ≥ 0.25 D, where Vs > 63 m/s

Where grinding wheels with large diameter holes are involved, the area covered by the flange must not, however be less than 0.17 of radial diameter of the cutting-off wheel (0.17 M)

 

Fig. Straight recessed flange for plain cutting-off wheels,
when Vs ≤ 63 m/s

Fig. Straight recessed flange for plain cutting-off wheels,
when Vs > 63 m/s