US3885635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed mechanical quill feed and spindle drive mechanism for a machine tool
Assignee: Cross Co
•
Filing: 1974-04-19
•
Granted: 1975-05-27
•
Expires: 1994-04-19
Abstract
Abstract A two-speed mechanical quill and spindle drive mechanism is disclosed wherein the quill is advanced by means of a screw formed about its periphery and cooperating with a ball nut driven by a two-speed drive to provide rapid and machining infeed rates. The quill is received within a housing bore and accurately guided for longitudinal movement thereby by means of a sliding engagement with bore surfaces on either side of the nut. The spindle is carried by the quill throughout its longitudinal movement and is rotated by means of a splined drive shaft which maintains a rotative connection therewith by means of a splined connection therebetween. The two-speed drive includes a motor driving the nut directly through gearing during rapid infeed of the quill, but which motor is itself driven through a clutch and reduction gearing by a second motor to produce the slow-speed infeed of the quill and which second motor also rotates the spindle by a driving connection with the splined drive shaft at a reduction during infeed. Both of these motors are described in the preferred embodiment to be of the sliding armature type to provide simplified controls and a minimum of drive train components in carrying out this twospeed drive arrangement.
Inventors
- 👤 Klaus Menzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:40
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/2018; B; B23; B23Q; B23Q16/00; B23Q5/00; B23Q5/22; B23Q5/32; B23Q5/326; F16H2025/2062; F16H2025/2081; F16H25/22; F16H25/2204; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6793; Y10T74/00; Y10T74/17; Y10T74/173
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
171 words
A two-speed quill drive comprising: a quill shaft mounted for sliding movement along its longitudinal axis; a spindle shaft rotatably mounted for rotation with respect to said quill shaft, adapted to be carried therewith during said longitudinal movement of said quill shaft; a first motor; a second motor having an armature and an armature shaft connected to said armature; means for producing longitudinal advancing movement of said quill shaft, said means including drive means drivingly connecting said second motor armature shaft and said quill shaft so as to cause said longitudinal movement of said quill shaft in response to rotation of said armature shaft; means drivingly connecting said first motor and said spindle shaft so that said spindle shaft is rotated by said first motor; and means drivingly connecting said second motor armature shaft and said first motor whenever said second motor is deenergized whereby said first motor is adapted to rotate said spindle shaft and is also adapted to longitudinally advance said quill shaft through said second motor armature shaft.
Claim 2
Dependent Claim
171 words
A two-speed quill drive comprising: a quill shaft mounted for sliding movement along its longitudinal axis; a spindle shaft rotatably mounted for rotation with respect to said quill shaft, adapted to be carried therewith during said longitudinal movement of said quill shaft; a first motor; a second motor having an armature and an armature shaft connected to said armature; means for producing longitudinal advancing movement of said quill shaft, said means including drive means drivingly connecting said second motor armature shaft and said quill shaft so as to cause said longitudinal movement of said quill shaft in response to rotation of said armature shaft; means drivingly connecting said first motor and said spindle shaft so that said spindle shaft is rotated by said first motor; and means drivingly connecting said second motor armature shaft and said first motor whenever said second motor is deenergized whereby said first motor is adapted to rotate said spindle shaft and is also adapted to longitudinally advance said quill shaft through said second motor armature shaft.
Claim 3
Dependent Claim
42 words
The quill drive of claim 1 wherein said means drivingly connecting said first motor and said second motor armature shaft includes reduction gearing, whereby said quill shaft is advanced at a slower rate by said first motor than by said second motor.
Claim 4
Dependent Claim
114 words
The quill drive of claim 1 wherein said second motor is an electric motor of the sliding armature type in which said second motor has a tapered armature and stator, said sliding armature axially moved in one direction by energization of said stator and armature; said second motor also including bias means urging said armature in the other axial direction by means of an axially directed force; and said quill drive also including clutch means drivingly connecting said first motor and said second motor armature shaft said clutch means controlled by said sliding armature of said second motor such that said clutch is engaged by said bias means whenever said second motor is deenergized.
Claim 5
Dependent Claim
45 words
The quill of claim 3 whErein said means drivingly connecting said first motor and said second motor and said second motor armature shaft include reduction gearing, whereby said quill shaft is advanced to a slower rate by said first motor than by said second motor.
Claim 6
Dependent Claim
36 words
The quill drive of claim 1 wherein said means drivingly connecting said second motor armature shaft and said quill shaft includes a ball screw drive including a nut member rotated by said second motor armature shaft.
Claim 7
Dependent Claim
57 words
The quill drive of claim 1 wherein said means drivingly connecting said first motor and said second motor armature shaft includes a shaft drivingly connected to said spindle shaft and also includes reduction gearing driven by said shaft, and further includes means drivingly connecting said reduction gearing to said armature shaft whenever said second motor is deenergized.
Claim 8
Dependent Claim
269 words
A two-speed quill drive comprising: a housing; a hollow quill shaft; a drive member rotatably mounted in said housing surrounding said quill shaft and fixed against axial movement; means mounting said quill shaft in said housing for slidable longitudinal movement along its axis; cam means drivingly connecting said quill shaft and said drive member producing said longitudinal movement of said quill shaft upon rotation of said drive member in said housing; means for rotating said drive member at two different rotative speeds to provide a rapid and slow infeed of said quill shaft said means including: a first motor, a second motor having an armature and an armature shaft connected to said armature, means for producing longitudinal advancing movement of said quill shaft said means including drive means drivingly connecting said second motor armature shaft and said quill shaft so as to cause said longitudinal movement of said quill shaft in response to rotation of said armature shaft, means drivingly connecting said first motor and said spindle shaft so that said spindle shaft is rotated by said first motor, means drivingly connecting said second motor armature shaft and said first motor whenever said second motor is deenergized whereby said first motor is adapted to rotate said spindle shaft and is also adapted to longitudinally advance said quill shaft through said second motor armature shaft; a spindle shaft rotatably mounted within said quill shaft and adapted to be carried by said quill shaft with said longitudinal movement; and means for rotating said spindle shaft in said quill shaft while said quill shaft is undergoing said longitudinal movement in said housing.
Claim 9
Dependent Claim
269 words
A two-speed quill drive comprising: a housing; a hollow quill shaft; a drive member rotatably mounted in said housing surrounding said quill shaft and fixed against axial movement; means mounting said quill shaft in said housing for slidable longitudinal movement along its axis; cam means drivingly connecting said quill shaft and said drive member producing said longitudinal movement of said quill shaft upon rotation of said drive member in said housing; means for rotating said drive member at two different rotative speeds to provide a rapid and slow infeed of said quill shaft said means including: a first motor, a second motor having an armature and an armature shaft connected to said armature, means for producing longitudinal advancing movement of said quill shaft said means including drive means drivingly connecting said second motor armature shaft and said quill shaft so as to cause said longitudinal movement of said quill shaft in response to rotation of said armature shaft, means drivingly connecting said first motor and said spindle shaft so that said spindle shaft is rotated by said first motor, means drivingly connecting said second motor armature shaft and said first motor whenever said second motor is deenergized whereby said first motor is adapted to rotate said spindle shaft and is also adapted to longitudinally advance said quill shaft through said second motor armature shaft; a spindle shaft rotatably mounted within said quill shaft and adapted to be carried by said quill shaft with said longitudinal movement; and means for rotating said spindle shaft in said quill shaft while said quill shaft is undergoing said longitudinal movement in said housing.
Claim 10
Dependent Claim
123 words
The quill drive of claim 7 wherein said second motor is an electric motor of the sliding armature type in which said second motor has a tapered armature and stator, said sliding armature axially moved in one direction by energization of said stator and armature; said second motor also including bias means urging said armature in the other axial direction by means of an axially directed force; and said means drivingly connecting said first motor and said second motor armature shaft including clutch means drivingly connecting said first motor and said second motor armature shaft said clutch means controlled by said sliding armature of said second motor such that said clutch is engaged by said bias means whenever said second motor is deenergized.
Claim 11
Dependent Claim
35 words
The quill drive of claim 7 wherein said means for producing said longitudinal movement of said quill shaft includes a ball screw drive including a nut member drivingly connected to said second motor armature shaft.
Claim 12
Dependent Claim
57 words
The quill drive of claim 7 wherein said means drivingly connecting said first motor and said second motor armature shaft includes a shaft drivingly connected to said spindle shaft and also includes reduction gearing driven by said shaft, and further includes means drivingly connecting said reduction gearing to said armature shaft whenever said second motor is deenergized.
Claim 13
Dependent Claim
42 words
The quill drive of claim 7 wherein said means drivingly connecting said first motor and said second motor armature shaft includes reduction gearing, whereby said quill shaft is advanced at a slower rate by said first motor than by said second motor.
Claim 14
Dependent Claim
41 words
The quill of claim 11 wherein said means drivingly connecting said first motor and said second motor armature shaft includes reduction gearing, whereby said quill shaft is advanced at a slower rate by said first motor than by said second motor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |