Book Block Milling Tool Rings Stepless Height Adjustment

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Solution Overview

Problem

Existing combination milling tools for machining book block spines lack the ability for infinite adjustment of tool rings relative to each other, limiting the precision and flexibility in height adjustment.

Innovation Solution

The tool rings are designed to be locked in any angular position with respect to the base body using pressure screws and fine left-hand threads, allowing for stepless height adjustment by blocking rotation and enabling precise vertical positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If latching means are used to lock tool rings in predetermined angular positions, then the tool rings can be secured at specific positions, but the adjustment is not stepless and flexibility is limited

Engineering Contradiction:

Improveheight adjustment precisionVSAvoidadjustment flexibility

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The invention removes the predetermined positioning constraint from the latching mechanism and replaces it with a continuous threading system. The latching means no longer locks at fixed angular positions but works in conjunction with fine threading to enable continuous position adjustment, extracting the limitation of discrete positioning from the system.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention transitions from a static locking system with fixed positions to a dynamic adjustment system. The tool rings can be continuously adjusted to any angular position and locked at that position, creating a dynamic system that adapts to any desired height setting rather than being constrained to predetermined positions.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If coarse threading is used for tool ring adjustment, then the structure is simpler, but the height adjustment precision is insufficient

Engineering Contradiction:

Improveheight adjustment precisionVSAvoidthreading structure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The invention changes the threading parameter from coarse to fine threading. This parameter change increases the resolution of height adjustment, allowing for more precise positioning of tool rings while maintaining the fundamental threading mechanism structure.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If multiple latching points are provided for tool rings, then the locking reliability is improved, but the adjustment flexibility is reduced

Engineering Contradiction:

Improvelocking reliabilityVSAvoidposition adjustment flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention makes the locking system dynamic by allowing the latching means to engage at any angular position rather than fixed positions. The fine threading enables the tool ring to be positioned continuously, and the latching mechanism secures whatever position is achieved, combining reliability with flexibility.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP2537614B1Device for processing the back of book blocks

Publication Date: 2014.12.03 MULLER MARTINI HLDG

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AI summary

The milling tool assembly has a tool head (2) provided with an outer bearing ring (3). A fixed retainer (4) for drive shaft (6) is arranged coaxially with respect to outer bearing ring. Several supporting rings (7-9) are arranged coaxially between the outer ring and fixed retainer and are connected with one another by threaded screws (11-13). The pressure screws (16-18) are provided in circumference of rings so as to fix with a bottom (24) of the tool head.