Abstract Apparatus for preventing deflection of a workpiece worked by a grinding machine, for example, comprises a steady rest pivotally mounted on a stationary support, a horizontal supporting shoe and a vertical supporting shoe which are slidably mounted on the steady rest for supporting the workpiece, drive means for feeding the horizontal supporting shoe toward the workpiece while at the same time for pivoting the steady rest to feed the vertical supporting shoe toward the workpiece, and a single contact type measuring device for measuring the dimension of the workpiece. The measuring device is provided with a single measuring feeler adapted to engage the workpiece at a point diametrically opposite the vertical supporting shoe for measuring the dimension of the workpiece.
The apparatus according to claim 1 wherein said drive means comprises a piston cylinder assembly mounted on said steady rest, a rack operated by said piston cylinder assembly, a first pinion rotatably mounted on said steady rest to be driven by said rack for operating a first feed screw mechanism of said first feed means, and a second pinion rotatably mounted to be driven by said rack for operating a second feed screw mechanism of said second feed means.
Claim 2
Dependent Claim
96 words
The apparatus according to claim 2 wherein said second feed screw mechanism comprises a sleeve having said second pinion on the periphery thereof, a feed shaft coaxially extending through said sleeve, said feed shaft threadedly engaging with said horizontal supporting shoe at one end thereof, a manually operated knob fixed to the other end of said feed shaft for adjusting said horizontal supporting shoe and clutch means interposed between said sleeve and said feed shaft for disengaging said feed shaft from said second pinion when said horizontal supporting shoe is adjusted by said manually operated knob.