Grinding Center Common Cross Slide for Crankshaft Bearings
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Solution Overview
Problem
Existing grinding centers for crankshafts require substantial space and components for simultaneous high-quality grinding of main and rod bearings, leading to inefficiencies and increased operational costs.
Innovation Solution
A grinding center design that combines two stations for simultaneous grinding of multiple bearings, using a common cross slide for both rod-bearing grinding spindles to reduce structural complexity and space requirements, with advanced control systems for precise material removal and correction, allowing for efficient and economical machining of both main and rod bearings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate cross slides are used for each grinding spindle to enable simultaneous machining of multiple bearings, then machining precision and control capability are improved, but device complexity and space requirements increase substantially
Solution Approach 1:
The patent combines two previously separate cross slides into a single common cross slide that supports both rod-bearing grinding spindles. This merging reduces the number of independent components while maintaining the ability to control both spindles for simultaneous machining operations, thereby reducing device complexity without sacrificing grinding precision
2Ease of operation
If separate cross slides are used for each grinding spindle, then independent control of each bearing machining is improved, but the space required and component outlay increase
Solution Approach 1:
The patent merges multiple cross slide functions into a single common cross slide structure, significantly reducing the machine tool's footprint and space requirements while maintaining independent control capabilities through a unified control system that manages both grinding spindles from the shared cross slide
3Productivity
If multiple separate cross slides and grinding spindles are used for simultaneous grinding of main and rod bearings, then productivity is improved, but the time required for machining is increased due to sequential operations
Solution Approach 1:
The patent enables continuous simultaneous machining operations by coordinating multiple grinding spindles on a common cross slide to machine main bearings and rod bearings concurrently in one setup. This eliminates idle time between operations and maintains continuous productive action, reducing total machining time while increasing overall productivity
4Device complexity
If a common cross slide is used for both rod-bearing grinding spindles, then device complexity and space are reduced, but control precision for simultaneous machining may be compromised
Solution Approach 1:
The patent incorporates feedback control mechanisms that continuously monitor the positions and operations of both grinding spindles on the common cross slide, making real-time adjustments to maintain precise simultaneous machining of multiple bearings despite the shared mechanical structure
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 design simplifies the control and operation of the grinding process, reduces component count and space, and enables rapid, high-quality simultaneous grinding of main and rod bearings, minimizing waiting times and enhancing productivity.
Implementation Method 1
a first rod-bearing grinding spindle (14) and a second rod-bearing grinding spindle (15) which are both arranged on a common cross slide (11)... for the simultaneous machining of at least two rod bearings (24-27)
Data Source
AI summary
The invention relates to a grinding center for the simultaneous grinding of multiple main bearings and rod bearings and/or central sections of crankshafts (22). Two rod bearing grinding spindles (14, 15), wherein the first can be displaced only in the Z direction and the second can be minimally displaced only in the X direction, are mounted on a common rod bearing crosslide (11). In the final phase of the grinding, a correction of dimension deviation between the two machined rod bearings is carried out via a separate control of the second rod bearing grinding spindle (15), as a dimension or roundness correction. The deviations are detected by measuring devices.