Lapping Machine

Lapping Machine

 

a metal cutting machine tool for fine finishing (grinding and lapping) of flat and cylindrical surfaces using laps with surfaces coated with polishing or grinding materials. Vertical lapping machines are used for finishing external surfaces, and horizontal lapping machines for both external and internal surfaces. A vertical lapping machine has one or two metal lapping disks. The workpiece to be finished is placed between these disks in an eccentrically placed retainer (work-holder). The laps rotate at varying rates either in one direction or in opposite directions as the retainer undergoes an oscillating motion in the horizontal plane. As a result of the complex motion of the surfaces being finished with respect to the laps, uniform finishing and high precision of shape (tolerances to within 1–3 microns) are obtained. Surface roughness up to class 14 can be obtained using lapping machines.

References in periodicals archive ?
Tenders are invited for procurement of core drilling machine core cutting and grinding machine polishing and lapping machine and core drilling bit
The UV polishing system used in this study (Multi LAP, ML-35 M, Taga Electric Co., Japan) was installed in a single lapping machine (M-15FS, Jeng Yueh Enterprise Co., Taiwan).
A HYPREZ lapping machine from Engis Company, Japan, was used.
Two tenders for the supply of (a) engineering inspection instruments & (b) a flat lapping machine. Ref.
Grenoble Rodage Industrie (GRI), based in Eastern France and one of the premier specialist lapping sub-contractors in the country, has invested in a new 432 bench-mounted double-sided lapping machine from Engis UK.
For constant pressure grinding, a conventional lapping machine equipped with an ELID-system and a #120000 metallic bond wheel was used.
Some spectrometers require the sample to be prepared on a lapping machine.
Sabre had been using a manual lapping machine to finish bores, but the increase in military orders resulted in a bottleneck of work at that operation.
Tenders are invited for Work Contract for In Situ Servicing /Repairing /Overhauling of Mal Drains valves 3000/2500/1500 class along with all consumables by using special purpose Insitu Seat Cutting / Lapping Machine for unit no.
Contract awarded for 4742ns01-variable frequency drive (vfd) fitting with machine for valve lapping machine. specification: input- 3ph 380- 480 v 50/60hz 4.3a, out put- 3ph 0- 480 v 4.2a 3.3kva 1.5kw/2hp, frequency range- 0.1-
Lapping is accomplished by running mating pairs together in a gear lapping machine and feeding a liquid abrasive compound under pressure into the gear pair.