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Figures (9)

Fig. 1
Fig. 1

Schematic drawing of a diamond lapping tool for a single lens grinding operation.

Fig. 2
Fig. 2

Micrograph of ground glass surface (7000x). (a) Ground with 3-μm loose abrasive. (b) Ground with newly sharpened diamond lap (15-μm diamond grit). (c) Ground with diamond lap several hours after sharpening (15-μm diamond grit). (d) Ground with dull diamond lap (15-μm diamond grit).

Fig. 3
Fig. 3

Grinding rates for blanks of different initial surface roughness.

Fig. 4
Fig. 4

Diamond particles imbedded in tool matrix. (a) Sharp diamond (SEM). (b) Flat spot on diamond due to wear (SEM).

Fig. 5
Fig. 5

Dulling effect for different coolants.

Fig. 6
Fig. 6

Dulling effect for different glasses (triethanolamine coolant).

Fig. 7
Fig. 7

Diamond lap wear.

Fig. 8
Fig. 8

Change in glass removal rate as function of number of blanks processed. (a) Tool hardness, 33C; grit size, 15 μm. (b) Tool hardness, 62B; grit size, 12 μm. (c) Tool hardness, 20B; grit size, 15 μm.

Fig. 9
Fig. 9

Change in glass removal rate as function of number of blanks processed.

Tables (2)

Tables Icon

Table I Microstructure of Lapped Surface

Tables Icon

Table II Grinding Rates and Surface Roughness for Diamond Laps

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