A rim drilling and milling machine has a base (10), a column (20), a turret (30), a saddle (40), a table (50), and a fixture unit (60). The fixture unit (60) has a foundation (61) and four clamping seats defined as two first clamping seats (63A) and two second clamping seats (63B). The first clamping seats (63A) are slidably mounted on the foundation (61) along a first radial direction, and are disposed at positions diametrically opposite in the first radial direction. The second clamping seats (63B) are slidably mounted on the foundation (61) along a second radial direction perpendicular to the first radial direction, and are disposed at positions diametrically opposite in the second radial direction. The four clamping seats can clamp at four equiangular points of a wheel rim.

A milling device having a first milling station with a first workpiece spindle capable of rotating about a first spindle axis A1 intended to receive a first lens blank and with a first milling tool with first cutters capable of rotating about a first milling axis FA1 intended for machining a received first lens blank. At least one second milling station with a second workpiece spindle capable of rotating about a second spindle axis A2 receives a second lens blank, and with a second milling tool with second cutters capable of rotating about a second milling axis FA2 machining the received second lens blank, the spindle axes A1, A2 being aligned parallel to one another, the milling axes FA1, FA2 being aligned parallel to one another, and obliquely aligned to the spindle axes A1, A2. The invention also includes a method for the operation of the milling device.

A tool for cutting the isthmuses in slots of a plate comprising PCBs includes: a base plate, a spindle having a shank and a cutting tip, a spindle support fixed to the base plate and revolvingly supporting the spindle, a head fixed to the base plate and provided with a through hole wherein the shank of the spindle is disposed, a guide mounted on the head and provided with a through hole wherein the cutting tip of the spindle is disposed, in such manner that a portion of the cutting tip of the spindle protrudes from the guide, the guide having a guide rib disposed in alignment with the cutting tip of the spindle and suitable for being inserted into the holes of the plate comprising the PCBs to guide a relative movement of the plate comprising the PCBs with respect to the tool.

A tool for cutting the isthmuses in slots of a plate comprising PCBs includes: a base plate, a spindle having a shank and a cutting tip, a spindle support fixed to the base plate and revolvingly supporting the spindle, a head fixed to the base plate and provided with a through hole wherein the shank of the spindle is disposed, a guide mounted on the head and provided with a through hole wherein the cutting tip of the spindle is disposed, in such manner that a portion of the cutting tip of the spindle protrudes from the guide, the guide having a guide rib disposed in alignment with the cutting tip of the spindle and suitable for being inserted into the holes of the plate comprising the PCBs to guide a relative movement of the plate comprising the PCBs with respect to the tool.

There is provided a machining apparatus in which movement of a machining point is a little, restriction on the machining operation of an articulated robot is a little and movement of a worker for the teaching operation is a little. The machining apparatus has an articulated robot which is controlled in attitude according to a teaching operation and has a catch instrument for catching a workpiece at an arm tip thereof, and a machining unit equipped at a fixed portion located within an arm reachable zone of the articulated robot, wherein the machining unit has a working tool having a profiling portion where a machining target portion of the workpiece caught by the catch instrument of the articulated robot is pressed according to the attitude control of the articular robot, and a floating mechanism that pushes the working tool in a press direction of the workpiece.