Rotary Table Device Segmented Shaft Maintenance
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Solution Overview
Problem
Conventional rotary table devices require frequent detachment and reattachment of the rotary shaft for maintenance, necessitating centering adjustments and using centering fixtures, which prolongs the maintenance process.
Innovation Solution
The rotary table device design includes a rotary shaft with a fitting part and an escape part, allowing the brake disk and disk holder to be externally fitted to the rotary shaft without detaching it from the spindle, eliminating the need for centering fixtures during maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the rotary shaft is detached for maintenance of the clamp mechanism, then the components can be accessed and maintained, but the maintenance time increases due to required centering adjustments and use of centering fixtures
Solution Approach 1:
The rotary shaft is divided into functional segments: a front end portion that remains attached to the spindle for maintaining centering, and a rear end portion that can be detached for maintenance. This segmentation allows the clamp mechanism components to be accessed and maintained without detaching the entire rotary shaft assembly, thereby reducing maintenance time while preserving centering accuracy.
2Ease of repair
If the rotary shaft is detached and reattached, then maintenance can be performed, but centering adjustments are required which increases operational complexity
Solution Approach 1:
The rotary shaft is segmented into a front end portion that remains fixed to the spindle and a rear end portion that can be detached. This segmentation eliminates the need for centering adjustments during maintenance, as the front end portion maintains the centering relationship while the rear end portion is serviced independently.
Solution Approach 2:
The front end portion of the rotary shaft is preliminarily fixed to the spindle before maintenance operations. This preliminary action ensures that centering is established in advance, eliminating the need for centering adjustments after the rotary shaft is reattached following maintenance.
3Manufacturing precision
If the rotary shaft remains attached during maintenance, then centering is maintained, but access to clamp mechanism components is limited
Solution Approach 1:
The rotary shaft is segmented into a front end portion that remains attached to the spindle for maintaining centering accuracy, and a rear end portion that can be detached to provide access to the clamp mechanism components. This segmentation simultaneously achieves both centering maintenance and component accessibility.
Solution Approach 2:
The rear end portion of the rotary shaft is extracted from the assembly for maintenance purposes, while the front end portion remains in place. This extraction allows access to the clamp mechanism components without compromising the centering accuracy maintained by the front end portion.
Data Source
AI summary
A rotary table device includes: a case; a spindle having an axis hole that is provided rotatably in the case and extends through along an axis direction of a center portion; a rotary joint having a rotary shaft attached non-rotatably to the axis hole of the spindle; and a clamp mechanism arranged in a rear end side of the case and having a component attached non-rotatably to the spindle, the rotary shaft having an attachment flange unit with the spindle in a front end portion, the rotary shaft inserted to the axis hole from the front end side of the spindle to be attached to the spindle by the attachment flange unit, a rear end portion of the rotary shaft projecting from a rear end surface of the spindle, the component of the clamp mechanism mounted to a rear end portion of the rotary shaft projecting from the rear end surface of the spindle from a rear end side, and contacting with and externally fit to an outer circumferential surface of the rear end portion.