Steering Knuckle Machining Fixture with Triangular Clamping

Solution Overview

Problem

The existing machining processes for steering knuckles require multiple procedures and fixtures, leading to increased time, reduced precision, high labor intensity, and low efficiency due to the need for multiple machine tools and frequent fixture changes.

Innovation Solution

A fixture designed to securely hold and align a steering knuckle on a single machine tool using a bottom plate with strategically positioned pressure claws and locating pins, along with an eccentric column and moving locating block, allowing for complete machining of the knuckle in one procedure, thereby reducing the need for multiple machine tools and improving alignment and compression.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple procedures and fixtures are used for machining steering knuckle, then different machining operations can be performed, but the machining precision decreases and auxiliary time increases

Engineering Contradiction:

Improvemachining operation coverageVSAvoidmachining precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent combines multiple machining operations (milling, drilling, reaming, threading) into a single unified fixture that can perform all operations on one machine tool in one procedure, eliminating the need for multiple fixtures and procedures while maintaining high machining precision through consistent positioning

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The fixture is designed as a universal multi-functional device that can accommodate and perform various machining operations on the steering knuckle including milling of mounting planes, drilling of holes, reaming of threaded holes, and threading operations, all within a single fixture setup

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple procedures and fixtures are used for machining steering knuckle, then different machining operations can be performed, but the auxiliary time increases and efficiency decreases

Engineering Contradiction:

Improvemachining operation coverageVSAvoidmachining efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent combines multiple machining operations (milling, drilling, reaming, threading) into a single unified fixture that can perform all operations on one machine tool in one procedure, eliminating the need for multiple fixtures and procedures while maintaining high machining precision through consistent positioning

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The fixture incorporates pre-positioned locating pins and positioning features that are prepared in advance, allowing the workpiece to be quickly and accurately positioned without requiring repeated setup and adjustment for each machining operation

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If multiple fixtures are changed between procedures, then different machining operations can be performed, but the labor intensity increases and precision is compromised

Engineering Contradiction:

Improvemachining operation coverageVSAvoidoperation complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent combines multiple machining operations (milling, drilling, reaming, threading) into a single unified fixture that can perform all operations on one machine tool in one procedure, eliminating the need for multiple fixtures and procedures while maintaining high machining precision through consistent positioning

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The fixture is designed as a universal multi-functional device that can accommodate and perform various machining operations on the steering knuckle including milling of mounting planes, drilling of holes, reaming of threaded holes, and threading operations, all within a single fixture setup

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10751855B2Fixture for fixing steering knuckle in machining process

Publication Date: 2020.08.25 CITIC DICASTAL CO LTD

AI summary

The present disclosure provides a fixture for fixing a steering knuckle in a machining process, the fixture comprises a bottom plate, wherein the bottom plate is machined with two bottom plate windows that are configured to accommodate machined parts of the steering knuckle; three groups of pressure claws and three groups of locating pins are fixed on the bottom plate, and the pressure claws and the locating pins are respectively fixed to the through holes of the bottom plate; and the three groups of pressure claws are respectively arranged at three vertexes of a triangle.