Posted by mechlook info on November 2nd, 2011 11:41 PM | 16 Comments Mandrels
Mandrels are used in alignment tests to represent the axis and
are of two types :
(i) Test mandrels with taper shanks.
(ii) Mandrels between centres.
(i) In construction the test mandrels with taper shanks have a conical shank for inserting in the socket ...
Posted by mechlook info on November 2nd, 2011 11:41 PM | 17 Comments Acceptance Tests for Surface Grinders
Following tests are conducted for surface grinders :
(a) Table top parallel to its movement by fitting the dial gauge in the stationary spindle and dial feeler touching the table top and traversing the table.
(b) Slots parallel ...
Posted by mechlook info on November 2nd, 2011 11:41 PM | 28 Comments Alignment Tests on Lathe
Levelling of the Machine. Before the various tests on any machine tool are carried out, it is very essential that it should be installed in truly horizontal and vertical planes, In horizontal plane, both longitudinal and transverse ...
Posted by mechlook info on November 2nd, 2011 11:41 PM | 5 Comments Introduction
The dimensions of a gauge, its surface finish and geometry are dependent upon the inherent quality and accuracy of the machine tool for its manufacture. Also in mass production the various components produced must be of such accuracy that they ...
Posted by mechlook info on November 2nd, 2011 12:02 AM | 22 Comments Alignment Tests on Milling Machine
Machine tools are very sensitive to impact or shock, even heavy cast iron standards are not always solid and rigid enough to withstand stresses due to falling during transportation, and deformations may be set up. Although ...
Posted by mechlook info on November 2nd, 2011 12:00 AM | 17 Comments Acceptance Tests for Shapers
Following tests are conducted for shapers :
(a) Table top parallel to its movement by fitting dial gauge in tool box and keeping the ram stationary and moving the table.
(b) Ram movement parallel to table top by fitting ...
Posted by mechlook info on November 2nd, 2011 12:00 AM | 50 Comments Alignment Tests on pillar type drilling machine. Before carrying out the alignment tests, the machine is properly levelled in accordance with the manufacturer's instructions. The various tests performed are :
(1) Flatness of clamping surface of base. (Refer Fig. 16.17). The ...
