Face Driver Workpiece Surface Roughening for Sliding Prevention
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Solution Overview
Problem
Conventional face driving methods face challenges in holding materials securely due to increased smoothness and hardness of the end surface, leading to sliding issues during rotation, especially when impressions for driving claws are formed, making it difficult to maintain effective engagement between the face driver and the material.
Innovation Solution
A material with a center hole and radially arranged driving claws, featuring recesses or protrusions in the circumferential direction on the end surface, which increase the biting depth of the driving claws, preventing sliding during rotation by facilitating secure engagement with the face driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If coining is performed on the one end surface to form the center hole, then the smoothness of the end surface and hardness of the material increase, but the amount of bite of the driving claws becomes smaller and sliding occurs
Solution Approach 1:
Roughening treatment is performed on the end surface in advance before face driving to create an uneven surface structure. This preliminary action ensures that when driving claws engage with the material, they can bite into the roughened surface effectively, preventing sliding even after coining increases smoothness. The roughened surface maintains adequate bite depth throughout the working process.
2Reliability
If impressions corresponding to driving claws are formed on the end surface, then sliding is inhibited, but making the face driver hold the material becomes complicated due to phase coincidence requirements
Solution Approach 1:
Instead of forming specific impressions that require precise phase alignment, the invention applies roughening treatment to the entire end surface or specific regions thereof. This creates a uniformly roughened surface that provides adequate bite for driving claws regardless of their angular position, eliminating the need for complex phase coincidence operations while maintaining reliable holding.
3Reliability
If the amount of bite of driving claws is increased to prevent sliding, then holding reliability improves, but the complexity of the working process increases
Solution Approach 1:
The invention changes the surface condition parameter of the end surface by applying roughening treatment, which increases the effective bite depth of driving claws without requiring increased claw size or driving force. This parameter change (surface roughness) achieves improved holding reliability through a simple, straightforward process that does not add operational complexity.
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 material design enhances the face driver's ability to hold and rotate the material without sliding, ensuring precise turning and minimizing elastic deformation, thus improving working precision and preventing sliding issues.
Implementation Method 1
The face driver holds the material by fitting the center pin into a center hole formed at the center part of the one end surface of the material and by driving the driving claws into the one end surface of the material
Implementation Method 2
a recess or a protrusion formed to exist in every phase in a circumferential direction around the center hole, which is formed on the one end surface
Data Source
AI summary
Provided is a material to be worked in face driving, which can facilitate making a face driver hold the material and can prevent a slide in the rotating direction between the face driver and the material, and a method for working the material. The material is to be worked with one end surface thereof held by the face driver having a center pin and a plurality of driving claws arranged around the center pin. A center hole into which the center pin is fit is formed on the one end surface. A recess or a protrusion existing in every phase in a circumferential direction around the center hole is formed on the one end surface. The recess or the protrusion is arranged within an area of the one end surface in a radial direction of the one end surface, into which the driving claws are driven.