Rotary Pallet Transfer for Precise CNC Machine Table Loading

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Solution Overview

Problem

Existing devices and methods for transferring workpieces between a pallet and a machine table, such as CNC machines, are not efficient for easy and precise delivery and return of workpieces for modification.

Innovation Solution

A rotatable table or plate with a cooperative delivery system that allows pallets to move linearly and rotate incrementally, enabling workpieces to be easily transferred to and from a machine table using a servo motor and screw mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing devices and methods are used to transfer workpieces, then workpiece transfer can be achieved, but the delivery process is not efficient and precise

Engineering Contradiction:
Improvedelivery efficiencyVSAvoiddelivery precision
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The system employs a rotatable table that can dynamically change orientation and a linear movement mechanism that adjusts position, allowing the delivery system to adapt its configuration for optimal efficiency and precision. The rotatable table enables multiple workpieces to be positioned sequentially, while the linear mechanism provides precise control over delivery timing and positioning.

Inventive Principle:
Principle #15Dynamics

2Productivity

If a rotatable table with linear movement is used, then workpiece delivery efficiency is improved, but device complexity increases

Engineering Contradiction:
Improveworkpiece delivery efficiencyVSAvoidmechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The rotatable table serves multiple functions: it holds multiple workpieces, rotates to present different workpieces sequentially, and works in conjunction with the linear movement mechanism. This multi-functionality consolidates what would otherwise require separate delivery systems into a single integrated apparatus, improving efficiency without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The delivery system is divided into distinct functional components: the rotatable table for workpiece storage and selection, and the linear movement mechanism for precise delivery. This segmentation allows each component to be optimized independently while working together as a coordinated system, managing complexity through modular design.

Inventive Principle:
Principle #1Segmentation

3Productivity

If multiple workpieces are processed sequentially, then productivity increases, but processing time per workpiece may increase

Engineering Contradiction:
Improveoverall processing throughputVSAvoidtime per workpiece
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

Multiple workpieces are loaded onto the rotatable table in advance, arranged in sequential positions. This preliminary preparation allows the system to quickly rotate and present the next workpiece without requiring time-consuming reloading operations, thereby maintaining high throughput while enabling continuous sequential processing.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The rotatable table enables continuous operation by maintaining a ready supply of workpieces in sequential positions. As one workpiece is being processed, the table can be rotated to present the next workpiece, ensuring that the processing action continues without interruption or idle time, thus maximizing productivity while minimizing time loss.

Inventive Principle:
Principle #20Continuity of useful action

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 enables efficient and precise delivery and return of workpieces, facilitating their modification at the machine table and improving the overall workflow by allowing multiple workpieces to be processed sequentially.

Implementation Method 1

a servo motor and screw mechanism

Methodology Applied
Scientific EffectServo motor: Linear Motor

Implementation Method 2

a servo motor and screw mechanism

Methodology Applied
Scientific EffectScrew mechanism: Screw

Data Source

PatentUS12275113B2Method and apparatus for delivering workpieces to and from a machine table
Publication Date: 2025.04.15 MIDACO CORP
  • US12275113B2 patent drawing

AI summary

An apparatus and a method for delivering a workpiece to and from a machine table. The apparatus includes a rotatable plate and a pallet. The workpiece is detachably mountable to the pallet. The rotatable plate is movable with respect to the pallet. The pallet is movable along a pallet carriage. A screw is movably mounted within the screw housing and the screw housing is connected to the pallet. A driver is attached to the screw and moves the screw within the screw housing and the driver operates to engage the screw and move the pallet in a linear direction to and from the machine table.