Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
245 words
A numerical controlled boring machine having a numerical control device and a control device for controlling the processing of a workpiece, comprising; an automatic bore diameter measuring and compensating apparatus which comprises a spindle head having a main spindle for rotation therewith, said main spindle being adapted to support a single cutting tool; a compensating device for adjusting the radius of gyration of an edge point of said cutting tool; and a measuring device including, a bore diameter measuring element, adapted to be displaced along a bore diameter, for measuring in response to a signal from said control device, and a control shaft provided independently of positioning control shafts and including; a measuring result register whereby the measuring result of said measuring device are given to said compensating device so as to compensate for any difference between the diameter of a bore processed during a trial boring operation and a desired diameter for a complete bore to be processed in a finish boring operation, in which said apparatus further includes: a main spindle sleeve having an axial eccentric opening for receiving said main spindle on which a single cutting tool is adapted to mounted, a differential gear mechanism and rotary coupling means for connecting said main spindle sleeve and main spindle for usual rotating in cutting operation while maintaining the two members in an angular phase difference and a servo motor adapted to impart a numerical control rotational movement to said necessary angular phase difference.
Claim 2
Dependent Claim
245 words
A numerical controlled boring machine having a numerical control device and a control device for controlling the processing of a workpiece, comprising; an automatic bore diameter measuring and compensating apparatus which comprises a spindle head having a main spindle for rotation therewith, said main spindle being adapted to support a single cutting tool; a compensating device for adjusting the radius of gyration of an edge point of said cutting tool; and a measuring device including, a bore diameter measuring element, adapted to be displaced along a bore diameter, for measuring in response to a signal from said control device, and a control shaft provided independently of positioning control shafts and including; a measuring result register whereby the measuring result of said measuring device are given to said compensating device so as to compensate for any difference between the diameter of a bore processed during a trial boring operation and a desired diameter for a complete bore to be processed in a finish boring operation, in which said apparatus further includes: a main spindle sleeve having an axial eccentric opening for receiving said main spindle on which a single cutting tool is adapted to mounted, a differential gear mechanism and rotary coupling means for connecting said main spindle sleeve and main spindle for usual rotating in cutting operation while maintaining the two members in an angular phase difference and a servo motor adapted to impart a numerical control rotational movement to said necessary angular phase difference.
Claim 3
Dependent Claim
72 words
An automatic bore diameter measuring and compensating apparatus as set forth in claim 1, in which feed means are provided on said spindle head parallel to the axis of said main spindle for moving said measuring device along said feed means between its measuring position, and retracted position whereby the relative position between the axis of rotation of said main shaft and the position of the measuring device is always maintained constant.
Claim 4
Dependent Claim
154 words
An automatic bore diameter measuring and compensating apparatus as set forth in claim 2 in which said apparatus comprises: a measuring head assembly which is provided with a pair of measuring elements, said servo motor, and a fine displacement instrument, said measuring elements being adapted to be in contact with the inner periphery of said bore processed during said trial boring operation to measure and determine the difference between the diameter of said bore and the desired diameter of a complete bore to be processed, said servo motor being arranged to be driven in accordance with a programmed signal to move said measuring elements until said elements come to have a predetermined space therebetween which is equal to the desired diameter of said complete bore, and said fine displacement instrument serving to determine said difference and thereby convert said difference into a voltage to be transmitted to the control means of said control device.