Machine tool with articulated crossbeam

The combination of calim 1, wherein the longitudinal crossbeam means is provided with a contractile structure positioned on at least one end of the said crossbeam means.

In a machine tool, the combination of a frame having a pair of vertical columns postioned substanially parallel to each other, a carrier block mounted for sliding movement along a first vertical axis on each of the columns, means for vertically adjusting the carrier block on its respective columns, a slide block mounted for sliding movement in each of the carrier blocks about a second horizontal axis perpendicular to the first axis, a longitudinal crossbeam means disposed between the pair of vertical columns and having respective end portions, a universal joint postioned between each of the end portions of the crossbeam means and each of the sliding blocks, whereby the crossbeam means may articulate between the carrier blocks and between the vertical columns, a tool saddle carried by the crossbeam means for sliding movement longitudinally thereof, means for adjusting the longitudinal position of the tool saddle relative to the crossbeam means, a tool element carried by the saddle for engagement with a workpiece, and means for driving the tool element.

In a machine tool, the combination of a frame having a pair of vertical columns substanially parallel to each other, a carrier block mounted for sliding movement upon a first vertical axis on each of the columns, means for vertically adjusting the carrier block on its respective columns, a slide block mounted for sliding movement in each of the carrier blocks about a second axis which is horizontal and perpendicular to the first axis, a longitudinal crossbeam means disposed between the pair of vertical columns and having respective end portions, a tool saddle carried by the crossbeam for sliding movement longitudinally thereof, means for adjusting the longitudinal position of the tool saddle relative to the crossbeam, a tool element carried by the saddle for engagement with a workpiece, means for driving the tool element, and articulation means located at each end of the crossbeam for articulating the crossbeam and hence the tool saddle in both horizontal and vertical planes, independently, and relative to the vertical columns.

In a machine tool having a pair of vertical columns, a horizontal crossbeam therebetween, a tool saddle carried by the crossbeam, and a cutting tool element carried by the tool saddle for engaging a workpiece supported on a table positioned between the columns, the improvement which comprises, in combination, articulation means located at each end of the crossbeam for articulating the crossbeam and hence the tool saddle and cutting tool element carried thereby, relative to the vertical columns, and in mutually perpendicular horizontal and vertical planes, independently thereof.

In a machine tool, the combination of a frame having a pair of vertical columns substanially parallel to each other, a carrier block mounted for sliding movement along a first vertical axis on each of the columns, means for vertically adjusting each carrier block on its respective column, a slide block mounted for sliding movement in each of the carrier blocks about a second horizontal axis perpendicular to the first axis, a longitudinal crossbeam means disposed between the pair of vertical columns and having respective end portions, a first vertical joint between one of the end portions of the crossbeam means and one of the slide blocks, a second universal joint between the other end portion of the crossbeam means and the other slide block, whereby the crossbeam means may articulate between the respective carrier blocks and between the pair of vertical columns, a tool saddle carried by the crossbeam means for sliding movement longitudinally thereof, means for adjusting the longitudinal position of the tool saddle relative to the crossbeam means, a tool element carried by the saddle for engagement with a workpiece, and menas for driving the tool element.