Machine tool

Claim 2

A machine tool comprising, a. a base, b. two workheads mounted for rotation about spaced, parallel vertical axes, c. a tool support consisting of a vertical column arranged for vertical movement and for rotation to introduce a tool vertically and horizontally to a workpiece mounted on each workhead, the tool support being in the form of a cylindrical column of circular cross section of relatively large diameter, d. a hydrostatic bearing mounted in the base in which the post is slidably and rotatably carried, e. a first cam mounted in the housing for producing the vertical movement of the tool support, and f. a second cam mounted in the housing for producing the rotational movement of the tool support.

Claim 3

A machine tool as recited in claim 1, wherein a tool is mounted on the upper end of the column and directed in the downward direction so that downward vertical movement of the tool support produces downward movement of the tool in the neighborhood oF the workhead.

Claim 4

A machine tool as recited in claim 1, wherein a tool is mounted at the upper end of the tool support and is directed downwardly so that rotation of the tool support produces radial movement of the tool relative to the axis of the workhead and to the axis of rotation of the workpiece.

Claim 5

A machine tool as recited in claim 1, wherein a drive motor operates through a transmission train to rotate the first cam for producing vertical movement of the tool support and wherein the same motor operates through the same transmission train to produce rotation of the second cam which, in turn, causes rotative movement of the tool support.

Claim 6

A machine tool as recited in claim 1, wherein the tool support has a laterally directed arm on which are mounted a plurality of tools which are successively brought into cutting engagement with a workpiece.

Claim 7

A machine tool as recited in claim 1, wherein the lower end of the cylindrical column is provided with an outwardly extending spider having a plurality of bores, and wherein a ring is mounted concentrically with the cylindrical column for rotation by the second cam and has a plurality of axially extending posts which extend slidably through the bores in the spider.

Claim 8

A machine tool as recited in claim 6, wherein a step latch is mounted on the base for selective engagement with the spider.

Claim 9

A machine tool as recited in claim 7 wherein a pneumatic cylinder continuously biases the ring toward engagement by the second cam.

Claim 10

A machine tool as recited in claim 1, wherein a pneumatic cylinder is mounted coaxially of the cylindrical column to permit selection of the range of travel due to the first cam.

Claim 11

A machine tool comprising a. a base, b. a workhead mounted for rotation about a vertical axis, c. a tool support consisting of a vertical column arranged for vertical movement and for rotation to introduce a tool vertically and horizontally to a workpiece mounted on the workhead, the tool support being in the form of a cylindrical column of circular cross section of relatively large diameter, the lower end of the cylindrical column being provided with an outwardly extending spider having a plurality of bores, d. a hydrostatic bearing mounted in the base in which the post is slidably and rotatably carried, e. a first cam mounted in the housing for producing the vertical movement of the tool support f. a second cam mounted in the housing for producing the rotational movement of the tool support, and g. a ring mounted concentrically with the cylindrical column for rotation by the second cam, the ring having a plurality of axially extending posts which extend slidably through the bores in the spider.

Claim 12

A machine tool comprising a. a base, b. a workhead mounted for rotation about a vertical axis, c. a tool support consisting of a vertical column arranged for vertical movement and for rotation to introduce a tool vertically and horizontally to a workpiece mounted on the workhead, the tool support being in the form of a cylindrical column of circular cross section of relatively large diameter, the lower end of the cylindrical column being provided with an outwardly extending spider having a plurality of bores, d. a hydrostatic bearing mounted in the base in which the post is slidably and rotatably carried, e. a first cam mounted in the housing for producing the vertical movement of the tool support f. a second cam mounted in the housing for producing the rotational movement of the tool support, and g. a ring mounted concentrically with the cylindrical column for rotation by the second cam, the ring having a plurality of axially extending posts which extend slidably through the bores in the spider.

Claim 13

A machine tool as recited in claim 10, wherein a step latch is mounted on the base for selective engagement with the spider.

Claim 14

A machine tool as recited in claim 10, wherein a pneumatic cylinder continuously biases the ring toward engagement by the second cam.

Claim 15

A machine tool comprising a. a base, b. a workhead mounted for rotation about a vertical axis, c. a tool support consisting of a vertical column arranged for vertical movement and for rotation to introduce a tool vertically and horizontally to a workpiece mounted on the workhead, the tool support being in the form of a cylindrical column of circular cross section of relatively large diameter, d. a hydrostatic bearing mounted in the base in which the post is slidably and rotatably carried, e. a first cam mounted in the housing for producing the vertical movement of the tool support, f. a second cam mounted in the housing for producing the rotational movement of the tool support, and g. a pneumatic cylinder is mounted coaxially of the cylindrical column to permit selection of the range of travel due to the first cam.

Claim 16

A machine tool comprising a. a base, b. a workhead mounted for rotation about a vertical axis, c. a tool support consisting of a vertical column arranged for vertical movement and for rotation to introduce a tool vertically and horizontally to a workpiece mounted on the workhead, the tool support being in the form of a cylindrical column of circular cross section of relatively large diameter, d. a hydrostatic bearing mounted in the base in which the post is slidably and rotatably carried, e. a first cam mounted in the housing for producing the vertical movement of the tool support, f. a second cam mounted in the housing for producing the rotational movement of the tool support, and g. a pneumatic cylinder is mounted coaxially of the cylindrical column to permit selection of the range of travel due to the first cam.