Parallel shaft driven machine tool way or quill unit

Claim 2

In combination in a machine tool, an electrically powered feed motor to advance and rotate a quill-type tool-driving member as the latter operates on a workpiece in a feed phase, an electrically powered traverse motor to advance the said member to operating engagement with the workpiece in a traverse phase, at least the traverse motor having a brake operatively connected thereto, a planetary reducer assembly whose rotative power output is effective to advance said member in both of said feed and traverse phases, said assembly comprising an input sun gear to the shaft of which torque is transmitted from said feed motor, an input ring gear surrounding said sun gear and driven by the traverse motor, an output ring gear from which said assembly transmits torque to advance said tool-driving member, a planetary carrier journaled coaxially of the sun gear axis, and a single unitary, two-state planetary gear journaled on said carrier, said planetary gear having coaxial sets of spur teeth, said input and output ring gears having sets of teeth meshing respectively with said sets of the planetary gear, and gearing to drivingly connect said reducer assembly to said motors, including a gear member driven by said traverse motor and meshing with one of said ring gears, and gear means drivingly connecting said reducer assembly at said sun gear thereof with said feed motor, and means to rotatively drive said tool-driving member in engagement with the workpiece, including further gear means powering said last named drive means from one of said motors.

Claim 3

The combination of claim 1, in which said first-named gear means includes replaceable spur gears drivingly connecting the shaft of the feed motor with said sun gear of the reducer assembly.

Claim 4

In combination in a machine tool, an electrically powered feed motor to advance and rotate quill-type tool-driving member as the latter operates on a workpiece in a feed phase, an electrically powered traverse motor to advance the said member to operating engagement with the workpiece in a traverse phase, said motors having parallel output shafts and at least the traverse motor having an electromagnetically responsive, spring-applied brake operatively connected to the output shaft thereof and operative to brake the latter in said feed phase, a planetary reducer assembly whose rotative power output is effective to advance said member in both of said feed and traverse phases, said assembly comprising an input sun gear to the shaft of which torque is transmitted from said feed motor, an input ring gear surrounding said sun gear and driven by the traverse motor, an output ring gear from which said assembly transmits torque to advance said tool-driving member, a planetary cArrier journaled coaxially of and by the sun gear shaft, and a single unitary, two-stage planetary gear journaled on said carrier, said planetary gear having coaxial sets of different numbers of spur teeth, said input and output ring gears having sets of internal teeth meshing respectively with said sets of the planetary gear, one of said planetary sets meshing externally with said input ring gear, and gear means drivingly connecting said reducer assembly at said sun gear thereof with said feed motor, and means to rotatively drive said tool-driving member in engagement with the workpiece, including further gear means powering said last-named drive means from said feed motor, said last-named means having a changeable spur gear train drivingly connected to said last-named motor.

Claim 5

In combination in a machine tool, an electrically powered feed motor to advance and rotate quill-type tool-driving member as the latter operates on a workpiece in a feed phase, an electrically powered traverse motor to advance the said member to operating engagement with the workpiece in a traverse phase, said motors having parallel output shafts and at least the traverse motor having an electromagnetically responsive, spring-applied brake operatively connected to the output shaft thereof and operative to brake the latter in said feed phase, a planetary reducer assembly whose rotative power output is effective to advance said member in both of said feed and traverse phases, said assembly comprising an input sun gear to the shaft of which torque is transmitted from said feed motor, an input ring gear surrounding said sun gear and driven by the traverse motor, an output ring gear from which said assembly transmits torque to advance said tool-driving member, a planetary cArrier journaled coaxially of and by the sun gear shaft, and a single unitary, two-stage planetary gear journaled on said carrier, said planetary gear having coaxial sets of different numbers of spur teeth, said input and output ring gears having sets of internal teeth meshing respectively with said sets of the planetary gear, one of said planetary sets meshing externally with said input ring gear, and gear means drivingly connecting said reducer assembly at said sun gear thereof with said feed motor, and means to rotatively drive said tool-driving member in engagement with the workpiece, including further gear means powering said last-named drive means from said feed motor, said last-named means having a changeable spur gear train drivingly connected to said last-named motor.

Claim 6

In combination, a pair of electrically powered motors, a spring-applied, electromagnetically released brake controlling the shaft of one of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a single sun gear, and a single, two-stage cluster gear having coaxial gear tooth sets meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means ro rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.

Claim 7

In combination, a pair of electrically powered motors, a spring-applied, electromagnetically released brake controlling the shaft of one of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a single sun gear, and a single, two-stage cluster gear having coaxial gear tooth sets meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means ro rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.

Claim 8

The combination of claim 4, in which said means to advance said tool-driving member comprises change gearing to further alter the reduction ratio as accomplished by s aid reducer assembly for the feed phase.

Claim 9

In combination, a pair of electrically powered motors, the shafts of which are on parallel, transversely spaced axes, a spring-applied, electromagnetically released brake controlling the shaft of each of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a single sun gear, and a single, two-state cluster gear having coaxial gear tooth sets of different number meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means to rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.

Claim 10

In combination, a pair of electrically powered motors, the shafts of which are on parallel, transversely spaced axes, a spring-applied, electromagnetically released brake controlling the shaft of each of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a single sun gear, and a single, two-state cluster gear having coaxial gear tooth sets of different number meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means to rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.

Claim 11

In combination in a machine tool, an electrically powered feed motor to advance and rotate a quill-type tool-driving member as the latter operates on a workpiece in a feed phase, an electrically powered traverse motor to advance the said member to operating engagement with the workpiece in a traverse phase, at least the traverse motor having a brake operatively connected thereto, a planetary reducer assembly whose rotative power output is effective to advance said member in both of said feed and traverse phases, said assembly comprising an input sun gear to the shaft of which torque is transmitted from said feed motor, an input ring gear surrounding said sun gear and driven by the traverse motor, an output ring gear from which said assembly transmits torque to advance said tool-driving member, a planetary carrier journaled coaxially of the sun gear axis, and at least one two-stage planetary gear journaled on said carrier, said planetary gear having coaxial sets of spur teeth, said input and output ring gears having sets of teeth meshing respectively with said sets of the planetary gear, and gearing to drivingly connect said reducer assembly to said motors, including a gear member driven by said traverse motor and meshing with one of said ring gears, and gear means drivingly connecting said reducer assembly at said sun gear thEreof with said feed motor, and means to rotatively drive said tool-driving member in engagement with the workpiece, including a line of transmission having further gear means powering said last-named drive means from one of said motors.

Claim 12

In combination in a machine tool, an electrically powered feed motor to advance and rotate a quill-type tool-driving member as the latter operates on a workpiece in a feed phase, an electrically powered traverse motor to advance the said member to operating engagement with the workpiece in a traverse phase, at least the traverse motor having a brake operatively connected thereto, a planetary reducer assembly whose rotative power output is effective to advance said member in both of said feed and traverse phases, said assembly comprising an input sun gear to the shaft of which torque is transmitted from said feed motor, an input ring gear surrounding said sun gear and driven by the traverse motor, an output ring gear from which said assembly transmits torque to advance said tool-driving member, a planetary carrier journaled coaxially of the sun gear axis, and at least one two-stage planetary gear journaled on said carrier, said planetary gear having coaxial sets of spur teeth, said input and output ring gears having sets of teeth meshing respectively with said sets of the planetary gear, and gearing to drivingly connect said reducer assembly to said motors, including a gear member driven by said traverse motor and meshing with one of said ring gears, and gear means drivingly connecting said reducer assembly at said sun gear thEreof with said feed motor, and means to rotatively drive said tool-driving member in engagement with the workpiece, including a line of transmission having further gear means powering said last-named drive means from one of said motors.

Claim 13

In combination, a pair of electrically powered motors, a spring-applied, electromagnetically released brake controlling the shaft of one of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a sun gear, and a two-stage cluster gear having coaxial gear tooth sets meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means to rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.

Claim 14

In combination, a pair of electrically powered motors, a spring-applied, electromagnetically released brake controlling the shaft of one of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a sun gear, and a two-stage cluster gear having coaxial gear tooth sets meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means to rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.

Claim 15

In combination, a pair of electrically powered motors, the shafts of which are on parallel, transversely spaced axes, a spring-applied, electromagnetically released brake controlling the shaft of each of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a sun gear, and a two-stage cluster gear having coaxial gear tooth sets of different number meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means to rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.

Claim 16

In combination, a pair of electrically powered motors, the shafts of which are on parallel, transversely spaced axes, a spring-applied, electromagnetically released brake controlling the shaft of each of said motors, and means drivingly connecting said motors to a rotary quill-type tool-driving member to advance said member at lesser and greater speeds, respectively, in feed and traverse phases of operation of said member, said means comprising a speed reducer assembly gear-connected to said motors and including input and output ring gear members, a sun gear, and a two-stage cluster gear having coaxial gear tooth sets of different number meshing respectively with said ring gear members, one of said sets also meshing with said sun gear, and means to rotatively drive said tool-driving member from one of said motors in at least a part of the advance thereof.