Spindle Attachment Device with Spring-Stabilized Posture
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Solution Overview
Problem
Conventional spindle attachment devices experience unstable posture during rotation when attaching or detaching from a spindle head, leading to difficulties in engagement and potential foreign material entry due to large engagement gaps.
Innovation Solution
A spindle attachment device with spring means to stabilize the device body's posture, fluid pressure means to control engagement, and transmission means for stable rotation, including fixed and movable teeth, a pull stud with a compressed coil spring, and a piston-cylinder system for effective fluid pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device body is rotated while hung from the spindle head, then the device body can be repositioned, but the posture becomes extremely unstable
Solution Approach 1:
The spring means acts as a counterweight mechanism that provides continuous upward force to balance the device body's weight during rotation, preventing the instability that occurs when the device body is merely hung from the spindle head without active support
2Ease of operation
If a large engagement gap is arranged to accommodate unstable posture during rotation, then the device body can engage more easily, but foreign material may enter into the spindle head
Solution Approach 1:
Instead of increasing the engagement gap to accommodate instability, the invention inverts the approach by using spring means to actively stabilize the device body posture during engagement, allowing the gap to be minimized while still achieving easy engagement
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables stable rotation and engagement of the device body during attachment or detachment from the spindle head, reducing the risk of foreign material entry and ensuring precise alignment.
Implementation Method 1
spring means for urging the device body so that the attachment surface of the device body is pressed onto the end face of the spindle head with the engaging means being ready for engagement
Implementation Method 2
fluid pressure means for causing a fluid pressure to act on the attachment surface of the device body against spring force of the spring means so that the engagement of the engaging means is released
Implementation Method 3
transmission means for transmitting rotation of the spindle to the device body with the fluid pressure of the fluid pressure means acting on the attachment surface of the device body
Data Source
AI summary
A spindle attachment includes a device body having an attachment surface detachably attached to an end face of a spindle head. Fixed and movable teeth move the body in a direction of an axial line of the spindle to engage the spindle head and the body so as to freely restrict or release rotation of the body with respect to the spindle head. A coil spring urges the body so that the attachment surface is pressed onto the end face of the spindle head with the fixed and movable teeth ready for engagement. A pressure cylinder causes fluid pressure to act on the attachment surface against the spring force to release engagement between the fixed and movable teeth. A key and a key groove transmit rotation of the spindle to the body with the fluid pressure of the cylinder acting on the attachment surface of the device body.