Machine tool

Claim 2

In a machine tool, a support member, a spindle head, means connecting said spindle head to said support member for linear movement in opposite directions relative thereto, said spindle head connecting means including eccentrically mounted members carried by said spindle head and engageable with opposed ways on said support member for adjusting said spindle head relative to said support member, a plurality of spindle assemblies, each of said spindle assemblies including a tool spindle having driven gear means connected thereto, means connecting said spindle assemblies to said spindle head for linear movement relative thereto in opposite directions parallel with the axes of rotation of said tool spindles forming a part thereof, a plurality of driven shafts corresponding in number to said spindle assemblies journaled in said spindle head, each of said shafts being adjacent to one of said spindle assembles and having driving gear means connected thereto and engageable with said driven gear means connected to the tool spindle of the adjacent spindle assembly, and power means operatively connected to said shafts for rotating said shafts and said tool spindles

Claim 3

In a machine tool: a support member; a spindle head supported by said support member for movement in opposite directions relative thereto; a plurality of spindle assemblies carried by said spindle head; each of said spindle assemblies including a housing, a rotatable tool spindle in said housing, and a driven gear concentric with and directly connected to said tool spindle; guide means connecting each of said housings to said spindle head for movement in opposite directions relative thereto parallel to the axis of rotation of said tool spindle therein; adjustment means connected between said housings and said spindle head for individually moving said spindle assemblies relative to said spindle head lengthwise of the axis of rotation of said tool spindle forming a part thereof; a plurality of shafts corresponding in number to said spindles journaled for rotation in said spindle head; each of said shafts being adjacent to one of said housings and having a driving gear engageable with said driven gear of the adjacent spindle; and power-actuated means for rotation said shafts and said spindles.

Claim 4

In a machine tool: a support member; a spindle head supported by said support member for movement in opposite directions relative thereto; a plurality of spindle assemblies carried by said spindle head; each of said spindle assemblies including a housing, a rotatable tool spindle in said housing, and a driven gear concentric with and directly connected to said tool spindle; guide means connecting each of said housings to said spindle head for movement in opposite directions relative thereto parallel to the axis of rotation of said tool spindle therein; adjustment means connected between said housings and said spindle head for individually moving said spindle assemblies relative to said spindle head lengthwise of the axis of rotation of said tool spindle forming a part thereof; a plurality of shafts corresponding in number to said spindles journaled for rotation in said spindle head; each of said shafts being adjacent to one of said housings and having a driving gear engageable with said driven gear of the adjacent spindle; and power-actuated means for rotation said shafts and said spindles.

Claim 5

In a machine tool as defined in claim 2, and wherein said housings are spaced from each other, are connected to a face of said spindle head, and each have an opening adjacent said face of said spindle head through which said gears are engageable.

Claim 6

In a machine tool as defined in claim 3, and wherein each engageable set of gears includes a wide face gear, whereby said housings can be adjustably positioned relative to said head axially of the length of said wide gear whiLe maintaining a driving connection between said gears of each set; and wherein the adjustable movement of said housings exceeds the axial length of said wide face gear of the set driving said tool spindle carried thereby, whereby said housings can be adjusted to positions wherein said sets of gears are engaged and disengaged.

Claim 7

In a machine tool, a spindle head, a plurality of spindle assemblies, each of said spindle assemblies including a housing and a tool spindle rotatable within and relative to said housing, said tool spindles having driven gear means connected thereto within said housings, means connecting said tool spindle assemblies to said spindle head for movement of said housings and tool spindles relative to said tool head in opposite directions parallel with the axis of rotation of said tool spindles, said housings being fixed against rotation with said tool spindles, a plurality of shafts corresponding in number to said spindle assembles journaled in said spindle head, each of said shafts being adjacent to one of said spindle assemblies and having driving gear means connected thereto and engageable with said driven gear means connected to the adjacent tool spindle, and power-actuated means operatively connected to said shafts for rotating said shafts and said tool spindles.

Claim 8

In a machine tool, a spindle head, a plurality of spindle assemblies, each of said spindle assemblies including a housing and a tool spindle rotatable within and relative to said housing, said tool spindles having driven gear means connected thereto within said housings, means connecting said tool spindle assemblies to said spindle head for movement of said housings and tool spindles relative to said tool head in opposite directions parallel with the axis of rotation of said tool spindles, said housings being fixed against rotation with said tool spindles, a plurality of shafts corresponding in number to said spindle assembles journaled in said spindle head, each of said shafts being adjacent to one of said spindle assemblies and having driving gear means connected thereto and engageable with said driven gear means connected to the adjacent tool spindle, and power-actuated means operatively connected to said shafts for rotating said shafts and said tool spindles.

Claim 9

In a machine tool as claimed in claim 5, wherein said means connecting said spindle assemblies to said spindle head includes means for individually adjusting each spindle assembly relative to said spindle head lengthwise of the axis of rotation of the tool spindle forming a part thereof.

Claim 10

In a machine tool as claimed in claim 14, wherein said driven gear means are connected to said tool spindles for movement therewith in said opposite directions, and wherein each engageable set of driven and driving gear means includes a wide face gear, whereby said spindle assemblies can be moved relative to said spindle head while maintaining a driving connection between each engageable set of driving and driven gear means.

Claim 11

A machine tool as claimed in claim 5, wherein said housing are connected to a face of said spindle head and are laterally spaced from each other.

Claim 12

In a machine tool, a support member, a spindle head, means connecting said spindle head to said support member for linear movement in opposite directions relative thereto, an output shaft having a lower end journaled in an upper portion of said spindle head, a plurality of spindle assemblies carried by said spindle head, each of said spindle assemblies including a housing and a tool spindle rotatable within and relative to said housing below said output shaft, said tool spindles having driven gear means connected thereto within said housings, means connecting said spindle assemblies to said spindle head for movement relative thereto toward and away from said lower end of said output shaft in opposite direction parallel thereto, said housings being fixed against rotation with said tool spindles, a plurality of shafts corresponding in number to said tool spindles journaled in said spindle head adjacent to said tool spindles, gear means connecting the upper ends of said shafts to said lower end of said output shaft, driving gear means connected to said shafts and engageable with said driven gear means connected to said tool spindles, and power-actuated means operatively connected to said output shaft for rotating said shafts and said tool spindles.

Claim 13

In a machine tool, a support member, a spindle head, means connecting said spindle head to said support member for linear movement in opposite directions relative thereto, an output shaft having a lower end journaled in an upper portion of said spindle head, a plurality of spindle assemblies carried by said spindle head, each of said spindle assemblies including a housing and a tool spindle rotatable within and relative to said housing below said output shaft, said tool spindles having driven gear means connected thereto within said housings, means connecting said spindle assemblies to said spindle head for movement relative thereto toward and away from said lower end of said output shaft in opposite direction parallel thereto, said housings being fixed against rotation with said tool spindles, a plurality of shafts corresponding in number to said tool spindles journaled in said spindle head adjacent to said tool spindles, gear means connecting the upper ends of said shafts to said lower end of said output shaft, driving gear means connected to said shafts and engageable with said driven gear means connected to said tool spindles, and power-actuated means operatively connected to said output shaft for rotating said shafts and said tool spindles.