Setting Head Sleeve and Holding Arms for Precise Element Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing joining devices with setting heads face issues with reliable positioning and secure holding of joining elements, leading to potential misalignment, wear, and maintenance challenges due to friction and tolerance-related problems, which can result in defective connections and increased maintenance efforts.
Innovation Solution
A setting head design featuring a movable punch with a receiving sleeve and laterally protruding holding arms that position and securely hold the joining element, minimizing friction and wear by allowing independent movement of the punch and sleeve, and enabling easy accessibility and interchangeability of the holding arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If holding claws are fastened at the punch and permanently co-moved with the punch, then the joining element can be held and guided, but permanent friction occurs between the punch construction and the inner wall of the joining channel, leading to critical wear and uncontrolled loss of the joining element
Solution Approach 1:
The device is divided into functionally independent segments: the punch for driving, the receiving sleeve for holding and guiding, and the holding claws for securing the joining element. The receiving sleeve is separable from the punch, allowing each component to perform its specific function without interfering with others, thereby reducing unnecessary friction and wear.
Solution Approach 2:
The receiving sleeve acts as an intermediary between the punch and the joining element. It receives the joining element from the punch, holds it in the correct position, and guides it into the component. This intermediary structure eliminates the need for the punch to directly hold and guide the joining element, reducing friction and wear on the punch construction.
2Reliability
If the punch and receiving sleeve are permanently connected, then the joining element can be held securely, but wear and friction increase leading to damaged components and increased maintenance efforts
Solution Approach 1:
The receiving sleeve is designed to be axially movable relative to the punch, allowing dynamic adjustment during the joining process. This movability enables the receiving sleeve to independently position and hold the joining element without being constrained by the punch movement, reducing wear and friction while maintaining secure holding.
Solution Approach 2:
The holding claws are designed to be replaceable and can be easily exchanged when worn or damaged. This allows the costly punch and receiving sleeve to be protected from wear, while only the consumable holding claws need periodic replacement, reducing overall maintenance efforts and component damage.
3Manufacturing precision
If holding claws are restricted in guidance to ensure proper positioning, then the joining element can be held in correct orientation, but friction and wear between the holding claws and joining channel increase
Solution Approach 1:
The receiving sleeve serves as an intermediary that provides the restricted guidance for the holding claws, rather than the joining channel walls directly constraining the claws. This allows the holding claws to maintain correct positioning with reduced friction, as the receiving sleeve absorbs the guiding function and protects the joining channel from wear.
Data Source
AI summary
A setting head for a joining device, such as a press or a setting device, which setting head comprises the following features: a punch which is movable in a longitudinal direction such that a joining element can be joined into a component by means of a punch face arranged at a working end of the punch; a hollow cylindrical receiving sleeve which has a through-passage and which, with the punch in the through-passage, is guided adjacent to the working end of the punch concentrically and axially movably thereon; and two mutually opposite holding arms arranged on the receiving sleeve outside the through-passage each provide at least one laterally inwardly projecting holding end, with the result that the at least two holding ends allow the joining element to be releasably positionable adjacent to a punch-remote outlet opening of the through-passage and by the axially movable working end of the punch.