Rotary Indexing Table Drive Layout for Lower Torque and Friction
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Solution Overview
Problem
Rotary indexing tables require high drive power due to internal friction and torque, which is not optimized for energy efficiency in existing designs.
Innovation Solution
An asymmetrically arranged barrel cam with a maximized effective lever arm length and a ball bearing supported slewing ring to reduce drive power and friction, allowing for reduced torque requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a symmetrically arranged barrel cam is used, then the structure is simple and balanced, but the effective lever arm length is not maximized resulting in higher drive power requirements
Solution Approach 1:
The barrel cam is arranged asymmetrically with respect to the axis of rotation of the output flange, offset by 5-30% of the drive effective section length. This asymmetry maximizes the effective lever arm length during the conveyance phase, reducing the torque required and thereby reducing drive power requirements and energy consumption.
Solution Approach 2:
The invention changes the geometric parameter of the barrel cam arrangement from symmetric to asymmetric, specifically optimizing the offset distance (10-20% of drive effective section length) to maximize the effective lever arm. This parameter optimization directly reduces the torque needed for operation.
2Power
If conventional axial and radial bearings are used, then the structure is simple, but the bearing friction is high increasing drive power requirements
Solution Approach 1:
The invention replaces conventional axial and radial bearing arrangements with a ball bearing supported slewing ring. This substitution reduces bearing friction significantly, thereby reducing the drive power required and energy loss through friction.
Solution Approach 2:
The invention changes the bearing type parameter from conventional axial/radial bearings to a ball bearing slewing ring, optimizing the friction characteristics of the support system. This parameter change directly addresses the high friction issue and reduces energy loss.
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
The solution significantly reduces the required drive power and internal friction, enabling more energy-efficient operation of the rotary indexing table by optimizing the lever arm length and minimizing bearing friction.
Implementation Method 1
the output flange can be supported at the housing of the rotary indexing table by means of a ball bearing supported slewing ring
Data Source
AI summary
Disclosed is a rotary indexing table (10) having an output flange (12) which is suitable for receiving a workpiece, mounted on a housing (14) of said rotary indexing table (10) for rotation about an axis of rotation (A) and drivingly connected to at least one drive element (24) which engages a driving groove (22) in a cylindrical cam (20) which can be driven by a motor, the cylindrical cam (20) being disposed asymmetrically to the axis of rotation (A) of the output flange (12).