The adjustment of workbench of machining center circumgyrate

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Most machining center deserves to have circumgyrate workbench (place of the 1d that be like a graph is shown) , the treatment of face of the many treatment in coming true to be installed in the spare parts. How accurate the centre of turning circle that measures workbench of machining center circumgyrate, to be being machined the quality of the spare parts is having main effect. It is with horizontal machining center below exemple, show the measurement technique of workbench centre of turning circle. Workbench centre of turning circle is in on workbench on exterior center. If pursue,1 is shown. The measurement technique of workbench centre of turning circle has a variety of, here introduces a kind of more commonly used method, uses tool has: Axis of core of a standard, dial gauge (dial gauge) , gauge block. Graph the position of centre of turning circle of workbench of circumgyrate of 1 machining center 1.

X to centre of turning circle measure metrical principle: line of main shaft center and coincide of workbench centre of turning circle, at this moment the position that the position that line of main shaft center is in is workbench centre of turning circle, criterion right now the indication value of X coordinate is workbench centre of turning circle to X the distance X to machine tool origin. . X of workbench centre of turning circle to the position, if pursue,1a place is shown. Measurement technique: 1) like the graph 2 are shown, get on outfit of standard core axis in machine tool main shaft, dial gauge is secured on workbench, adjust the position of dial gauge, make pressing with a finger is in in apogee of standard core axis point to null. 2) core axis edge + Z direction exits Z axis. 3) rotate workbench 180 degrees, again core axis edge - Z direction moves time former, see a picture 2. The deviation that observes dial gauge is indicated adjusts X next to machine tool coordinate, measure repeatedly, rotate to be mixed to 0 degrees till workbench when the reading just the same that finger of 180 degrees of two direction dial gauge indicates, the X that shows on machine tool CRT at this moment is workbench X namely to coordinate value the position to centre of turning circle. The X that workbench X decided to tune machines the aperture on workpiece to the accuracy of centre of turning circle spends precision to coaxial. Graph the measurement of 2 　 X to centre of turning circle 2.

Y to centre of turning circle measure measure a principle: Find out the surface on workbench to arrive the Y distance to machine tool origin Y0, it is Y namely the position to workbench centre of turning circle. Position of workbench centre of turning circle is shown like graph 1b place. Measurement technique: If pursue 3, first Y of main shaft edge to move to book the position around, taking gauge block to fill in gently with the hand, adjust main shaft Y to the position, just fill in till gauge block till. The Y that Y shows to =CRT of centre of turning circle to coordinate (be worth to lose) - dimension of gauge block height - workbench of radius of standard core axis the precision of central expensive measure that Y affects aperture of the treatment on workpiece to centre of turning circle. Graph the measurement of 3 　 Y to centre of turning circle 3.

Z to centre of turning circle measure measure a principle: Find out workbench centre of turning circle to be Z namely to the distance Z0 of machine tool origin to Z the position to workbench centre of turning circle. The position of workbench centre of turning circle is shown like graph 1c place. Measurement technique: If the graph is shown 4 times, when workbench parts to mix 180 degrees in 0 degrees, shuttle table in order to adjust Z to coordinate, make the reading of dial gauge same, criterion: The Z that Z shows to =CRT of centre of turning circle is worth Z to coordinate the accuracy to centre of turning circle, the space size precision between the two end panel when tune of influence machine tool processes work (accurate premise is measured to fall in cutting tool length) . Conversely, it also can amend cutting tool length to measure deviation. Machine tool centre of turning circle is measured in reach after exact value, can serve as inside period of time fiducial. But, as the use of the machine tool, be in especially related the machine tool when partial occurrence mechanical failure, make machine tool centre of turning circle appears likely change. For example, the machine tool appears in machining a process when nut of guide screw of accident hitting a car, machine tool becomes loose, wait. Accordingly, machine tool centre of turning circle must be measured regularly, remeasure answers before processing the work with opposite more expensive precision especially, in order to proofread machine tool centre of turning circle, assure the precision that workpiece machines thereby. The measurement of graph 4 Z to centre of turning circle CNC Milling CNC Machining