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US 8,425,162 B2Granted
Servo drill spindle
AssigneeThe Boeing Company
InventorsIsaac C. Schevers, Dennis R. Mathis, David L. Fritsche
Life of this patent
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Abstract
A servo drill spindle includes a spindle body, an air motor slidably carried by the spindle body, a spindle extension drivingly engaged by the air motor, a cutting tool drivingly engaged by the spindle extension and a servo motor engaging the air motor and operable to advance the air motor along the spindle body.
Claims19
A servo drill spindle, comprising:
- a spindle body;
- a pair of guide rods carried by the spindle body;
- an air motor housing slidably carried by the pair of guide rods;
- an air motor provided in the air motor housing;
- a spindle extension drivingly engaged by the air motor;
- a cutting tool drivingly engaged by the spindle extension;
- and
- a servo motor engaging the air motor and operable to advance the air motor along the spindle body;
- and
- an encoder carried by the spindle body and drivingly engaged by the spindle extension.
7 more elements
A spindle apparatus comprising:
- a spindle body;
- a guide rod coupled to the spindle body, the guide rod to slidably couple a first motor to the spindle body, the first motor to rotate a cutting tool coupled to an output shaft of the motor;
- a spring positioned on the guide rod, the spring to bias the first motor in a direction away from the cutting tool to dissipate backlash during operation of the spindle;
- and
- an encoder coupled to a housing of the first motor via a bracket, the encoder to be driven by the output shaft of the first motor.
2 more elements
A spindle apparatus comprising:
- a spindle body;
- a first guide rod coupled to a first side of the spindle body, the first guide rod having a first spring;
- a second guide rod coupled to a second side of the spindle body, the second guide rod having a second spring;
- an air motor housing slidably coupled to the spindle body via the first and second guide rods, the first and second springs to continuously bias the motor housing;
- and
- a servo motor to cause the air motor housing to slide on the guide rods relative to the spindle body, the first and second springs to compress and decompress as the air motor housing slides relative to the spindle body along the guide rods.
3 more elements
An apparatus comprising:
- a spindle body;
- a first motor coupled to the spindle body via a first motor housing, the first motor having an output shaft to rotate a cutting tool;
- a second motor to move the first motor housing relative to the spindle body along a guide rod positioned adjacent the spindle body;
- and
- an encoder coupled to the first motor housing and drivingly engaged by the first motor.
2 more elements
Dependencies are inferred from the claim text.