Guide Bush Adjusting Device Segmentation for Precision
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Solution Overview
Problem
Existing guide bush adjusting devices face challenges in precisely adjusting the inner diameter dimension due to deformation of the guide bush adjusting nut, leading to changes in the position of the guide bush and subsequent inaccuracies in dimension adjustment.
Innovation Solution
The guide bush adjusting device employs a fixing mechanism that elastically enlarges the diameter of the operation member, using a pin and recessed portion engagement system to prevent position changes, allowing precise adjustment and maintenance of the inner diameter dimension by displacing the mobile body in a rotational direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the guide bush adjusting nut is fixed by expanding the slit portion, then the guide bush adjusting nut can be fixed to the guide bush sleeve, but the slit portion expansion causes deformation of the guide bush adjusting nut and changes its position
Solution Approach 1:
The guide bush adjusting nut is divided into two independent functional parts: a thread portion for rotational adjustment and a fixation portion with an external thread for secure mounting. This segmentation allows the fixation portion to be mounted independently without causing deformation that would affect the thread portion's precision, thereby resolving the contradiction between reliable fixation and dimensional precision.
2Ease of operation
If the guide bush adjusting nut is displaced rotationally to adjust the inner diameter, then the adjustment can be made, but the position of the tip end side changes due to fixation deformation
Solution Approach 1:
By separating the rotational adjustment function (thread portion) from the fixation function (fixation portion with external thread), the invention ensures that fixation deformation does not occur in the thread portion. This allows rotational displacement for adjustment without position changes, maintaining both ease of operation and measurement precision.
3Device complexity
If the internal thread portion and expandable slit portion are integrated, then the structure is simplified, but the fixation causes deformation and position changes
Solution Approach 1:
The invention divides the guide bush adjusting nut into an internal thread portion and a fixation portion with an external thread, separating the adjustment function from the fixation function. This segmentation prevents fixation-induced deformation from affecting the adjustment precision, resolving the contradiction between structural simplicity and manufacturing precision.
Solution Approach 2:
The fixation function is extracted as a separate fixation portion with an external thread, distinct from the internal thread portion that performs the adjustment function. This extraction allows the fixation portion to be mounted independently without causing deformation in the internal thread portion, thereby maintaining precision while keeping the overall structure relatively simple.
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
This configuration enables precise and stable adjustment of the guide bush's inner diameter dimension, preventing deformation and position changes, thus ensuring accurate and reliable operation.
Implementation Method 1
the fixing device be configured to fix the mobile body by elastically (resiliently) enlarging a diameter of the operation member, and pressing the operation member against the cylindrical body
Data Source
Figure 1~2A
Figure 2B~3
Figure 4
AI summary
In a guide bush adjusting device, a drawbar (24) (a mobile body) provided to be displaceable with respect to a guide bush sleeve (7) is formed from: a screw connection member (14) (a connection member) which is connected to a guide bush (9) housed in a guide bush sleeve (7) (a cylindrical body); and an operation member (18) configured to operate the displacement of the screw connection member (14). The guide bush adjusting device adjusts an inner diameter dimension of the guide bush (9) by: releasing the operation member (18) from its fixation, displacing the drawbar (24), and fixing the operation member (18) at a predetermined position; and moving the guide bush (9) with respect to the guide bush sleeve (7), and positioning the guide bush (9).