Steering Rack Die Gripper With Side-Shift for Faster Forging Cycles
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Solution Overview
Problem
The existing die apparatus for forging steering racks is inefficient due to the time required to remove the forged rack, service the die, and load another bar, which leads to excessive heat transfer and slows down the forging process, making the operation costly and less productive.
Innovation Solution
A support apparatus with a gripper, lost-motion mechanism, and side-shift mechanism is attached to the second die assembly, allowing for the gripper to grip and lift the forged steering rack, enabling quick removal from the die, minimizing heat transfer, and allowing for immediate servicing and loading of another bar, thereby reducing the overall cycle time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the forged rack is left in the die for too long, then the die elements may be damaged prematurely due to excessive heat transfer, but removing the forged rack, servicing the die, and loading another bar takes time that slows down the operation
Solution Approach 1:
The gripper is positioned in advance within the die assembly, ready to immediately grasp the forged rack as soon as it is formed. This preliminary positioning eliminates delay between forging completion and rack removal, preventing excessive heat transfer to die elements while maintaining continuous operation flow.
Solution Approach 2:
The die assembly incorporates an integrated gripper mechanism that automatically grasps and removes the forged rack without requiring external intervention. This self-service capability reduces cycle time by eliminating manual removal steps and allows immediate servicing of die elements while the rack is being handled by the gripper.
2Temperature
If the forged rack is removed quickly from the die, then heat transfer to die elements is minimized, but the time to service the die and load another bar becomes the limiting factor
Solution Approach 1:
The die assembly merges the forging function with the gripping and removal function into a single integrated unit. The gripper is built into the die structure, allowing simultaneous completion of forging and rack removal operations, thereby minimizing the time the hot rack contacts the die while eliminating separate removal steps that would extend cycle time.
Solution Approach 2:
The integrated gripper mechanism enables continuous operation by immediately grasping the forged rack upon completion and removing it without interruption. This continuous action prevents idle time in the forging cycle and allows die servicing to occur concurrently with rack handling, maintaining uninterrupted productivity.
3Device complexity
If manual removal and servicing of the die is performed, then the process is simple to implement, but it slows down the operation and increases cycle time
Solution Approach 1:
The die assembly is equipped with an automatic gripper mechanism that performs the removal and handling of forged racks without manual intervention. This self-service capability eliminates the time-consuming manual operations while keeping the added complexity integrated within the existing die structure, maintaining ease of implementation while dramatically improving operation speed.
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 solution significantly reduces the cycle time of the forging process, minimizes heat transfer to the die elements, and increases the productivity of the forging cell by allowing for continuous operation with reduced downtime for servicing.
Implementation Method 1
the lost-motion mechanism being adapted to abut the first die assembly as the forging die closes to forge the steering rack
Implementation Method 2
the gripper being adapted to lift the gripped steering rack away from the first die assembly as the forging die opens
Implementation Method 3
the side-shift mechanism being adapted to move the gripped steering rack sideways
Implementation Method 4
the lost-motion mechanism is biased towards the first die assembly. Preferably the lost-motion mechanism is biased by springs
Data Source
AI summary
A support apparatus for supporting a steering rack forged in a forging die, comprising a gripper to grip the shank of the rack, a lost-motion mechanism supporting the gripper and permitting limited movement in the direction of closing of the forging die, and a side-shift mechanism to move the gripper sideways. The lost-motion mechanism abuts the die assembly as the forging die closes thereby positioning the gripper to grip the shank of the steering rack during the final closing travel of the forging die. The gripper then lifts the steering rack as the forging die opens. The side-shift mechanism then moves the gripped steering rack sideways.