Clamping Ring Burr Removal via Partial Cutting

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Solution Overview

Problem

Existing methods for producing clamping rings with pins on opposite sides often leave sharp-edged burrs due to inadequate access for deburring, especially when using barrel-finishing stones, as the pins obstruct the effective rounding of edges.

Innovation Solution

The method involves partially cutting the ring contour from one side before complete cutting, shifting the cutting edge away from the pins to allow for efficient burr removal during deburring, and includes hardening the clamping ring after finish cutting for improved processing quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pins are formed on both sides of the clamping ring, then the clamping ring can effectively secure workpieces, but sharp-edged burrs remain around the pins due to inadequate deburring access

Engineering Contradiction:
Improveclamping effectivenessVSAvoidedge quality around pins
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

A preliminary cut is made from the first side before the final cutting operation, creating a stepped configuration that positions the burr away from the pin. This preliminary action enables subsequent deburring tools to access and remove burrs that would otherwise be inaccessible due to the pin's obstruction.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The cutting process is divided into two separate operations: a preliminary cut from the first side and a final cut from the second side. This segmentation allows the burr to be positioned on a different level than the pin, enabling effective deburring of areas that would otherwise be inaccessible.

Inventive Principle:
Principle #1Segmentation

2Productivity

If barrel-finishing stones are used for deburring, then large numbers of clamping rings can be processed efficiently, but the pins obstruct the stones from effectively rounding the edges

Engineering Contradiction:
Improvedeburring throughputVSAvoidedge rounding quality
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The preliminary cut creates a stepped configuration that removes material before the final cutting operation. This preliminary removal of material positions the resulting burr away from the pin, allowing barrel-finishing stones to effectively access and round the edges without obstruction from the pin.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If complete cutting is performed from one side, then the production process is simple, but burrs on the opposite side cannot be effectively removed

Engineering Contradiction:
Improvecutting process complexityVSAvoiddeburring accessibility
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The cutting process is divided into two separate operations: a preliminary cut from the first side and a final cut from the second side. This segmentation allows the burr to be positioned on a different level than the pin, enabling effective deburring of areas that would otherwise be inaccessible.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The solution introduces a dimensional change by creating a stepped configuration through cutting from both sides. The preliminary cut from the first side creates a different level, allowing the final cut from the second side to position the burr away from the pin in the vertical dimension, enabling effective deburring.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10835946B2Method for producing a clamping ring
Publication Date: 2020.11.17 HUGO BENZING GMBH & CO KG
  • US10835946B2 patent drawing
  • US10835946B2 patent drawing

AI summary

A method for producing a clamping ring in which pins that protrude in the region of or near a ring contour are formed on the top and bottom surfaces of a flat sheet metal material and after the ring contour is cut out, burrs that are produced during the cutting are removed by a deburring process. Advantages for the machining of the clamping ring are achieved if before a finish cutting by a complete cutting-out of the ring contour that is carried out from the one side of the flat sheet metal material, the ring contour is partially cut out from the other side in the vicinity of or near the pin protruding from this other side.