Drilling Force and Temperature of Bone by Surgical Drill

2010 ◽  
Vol 126-128 ◽  
pp. 779-784 ◽  
Author(s):  
Yi Xin Yang ◽  
Cheng Yong Wang ◽  
Zhe Qin ◽  
Lin Lin Xu ◽  
Yue Xian Song ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Feed Rate ◽  
High Speed ◽  
Drill Bit ◽  
Twist Drill ◽  
Drilling Speed ◽  
Drilling Force ◽  
Drilling Depth ◽  
High Speed Drilling ◽  
Lower Temperature

Drilling force and temperature of tibia at the high speed drilling for improving the design of surgical drills are very important. In this paper we describe experiments using pig tibia bones, measuring the drilling force and temperature of a new design of drill bit and compare the results against a twist drill. The result shows that the drilling force and temperature are affected by the feed rate and drilling speed, which vary with the drilling depth into the bone. The new surgical drill with three top cutting edges can achieve lower temperature below 47oC and lower drilling force than with the stainless steel twist drill and carbide twist drill.

Response Surface Methodology Modeling of Drill Exiting Damage Factor in High Speed Drilling of GFRP Using HSS Twist Drill Bit

2015 ◽  
Vol 786 ◽  
pp. 323-327
Author(s):  
Tze Keong Woo ◽  
Faiz Ahmad ◽  
Safian Sharif
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
High Speed ◽  
High Speed Steel ◽  
Drill Bit ◽  
Twist Drill ◽  
Damage Factor ◽  
Glass Fiber Reinforced ◽  
Drilling Parameters ◽  
High Speed Drilling

This paper presents a research on experimental and response surface methodology (RSM) approach in evaluating the damage factor of the drilled holes in high speed drilling of glass fiber reinforced polymer (GFRP). From the experiment, the influences of drilling parameters toward damage factor are more prominent in thicker GFRP; where high speed drilling using high speed steel twist drill bit produces lower damage factor in thicker GFRP. Lastly an optimized set of drilling parameters was generated for the use of high speed steel twist drill bit in high speed drilling.

Study on the Effects of the Geometrical Parameter of Twist Drill on the Drilling Performance of Stainless Steel

2011 ◽  
Vol 189-193 ◽  
pp. 2251-2254
Author(s):  
Xing Jun Gao ◽  
Ping Zou ◽  
Qing Liu ◽  
Hong He Gao
Keyword(s):  
Stainless Steel ◽  
Unit Length ◽  
Edge Length ◽  
Geometrical Parameters ◽  
Drilling Process ◽  
Drill Bit ◽  
Twist Drill ◽  
Drilling Force ◽  
Drilling Performance ◽  
Twist Drills

The key geometrical parameters of twist drills that had a great effect on the drilling performance of stainless steel were studied by Pro/E and DEFORM-3D softwares. The influence of chisel edge and tip angle of twist drill on the drilling force, torque and tool wear in the drilling process was researched, and meantime the effects were introduced by shortened the chisel edge length or adopted S-shape helical drill points as well. The tip angle of drill bit that affected the main cutting edge length, the cutting load on unit length, the proportion between cutting width and cutting thickness in the cutting lay, the cutting force, the torque, the chip formation and chip removal was introduced in detail. The choice of tip angle of twist drill was introduced. In drilling, it has important instructional significance for improvement of life of drill bit, advancement of productivity of drilling and processing quality of hole.

Study on the Prediction of Drilling Forces on Cortical Bone Based on Finite Element Simulation

2013 ◽  
Vol 589-590 ◽  
pp. 157-162
Author(s):  
Ya Hui Hu ◽  
Qing Yun Zhang ◽  
Xiao Yu Yue
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Feed Rate ◽  
Orthogonal Experiment ◽  
Element Model ◽  
Drilling Speed ◽  
Drilling Force ◽  
Drill Diameter ◽  
Potential Damage ◽  
Set Up

The changes of drilling forces during bone drilling provide a useful index for evaluating the risk of potential damage to the bone. The aim of the work is that an elastic-plastic dynamic finite element model is used to simulate the process of a drill bit drilling through the bone. The finite element model was set up in the Abaqus6.11; the prediction model of the drilling force was gotten by using the regression orthogonal experiment and data processing software Matlab7.0. Diverse values of drilling speed, feed rate and drill diameter are important factors which will lead to changes in the drilling forces. By controlling the drilling parameters can obtain the optimal drilling force. The results show that the diameter has the greatest influence on the drilling force, the drilling speed the second, the feed rate the last.

Vibration Drilling the 0Cr18Ni9Ti Stainless Steel Micro-Hole

2012 ◽  
Vol 217-219 ◽  
pp. 1592-1595 ◽  
Author(s):  
Peng Zhang ◽  
Chang Hong Mei ◽  
Xing Yu Guo
Keyword(s):  
Stainless Steel ◽  
Hole Drilling ◽  
Drilling Process ◽  
Drill Bit ◽  
Drilling Force ◽  
Process Mechanism ◽  
Micro Hole ◽  
Vibration Drilling ◽  
Hole Machining

Austenite 0Cr18Ni9Ti stainless steel is one of difficult-to-cut materials. It has poor dilling process, especially for micro-hole machining. The main reasons are the tiny drill, poor rigidity, easy to deviation. Moreover, the chip is difficult to discharge, so the drilling force is increased and the drill bit is easy to break, or even it is impossible for micro-hole drilling. In this paper, the vibration drilling process is adopted. The vibration drilling 0Cr18Ni9Ti stainless steel micro-hole process mechanism is researched. The stainless steel micro-hole drilling experiments are conducted. The results show that the vibration drilling can be a better solution for 0Cr18Ni9Ti stainless steel micro-hole processing.

Wear performance of surface treated drills in high speed drilling of AISI 304 stainless steel

2020 ◽  
Vol 58 ◽  
pp. 223-235
Author(s):  
Sarmad Ali Khan ◽  
Sumbul Shamail ◽  
Saqib Anwar ◽  
Amjad Hussain ◽  
Shafiq Ahmad ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Speed ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Wear Performance ◽  
Aisi 304 ◽  
High Speed Drilling

The Relationship between Feed Rate and Point Angle of a Twist Drill Bit When Drilling Bone

1980 ◽  
Vol 9 (3) ◽  
pp. 137-142
Author(s):  
J K Davis ◽  
C J Jackson ◽  
I Scott
Keyword(s):  
Shear Flow ◽  
Feed Rate ◽  
Thermal Effects ◽  
Orthogonal Cutting ◽  
Human Bone ◽  
Bovine Bone ◽  
Drill Bit ◽  
Twist Drill ◽  
Dynamic Shear ◽  
The Relationship

The work described in this paper was carried out in two parts. The first part consisted of evaluating the machining constants and the dynamic shear flow strengths of bovine bone from orthogonal cutting and drilling tests. The second part of the work arose from investigation into the thermal effects of drilling human bone during which certain trends were observed when comparing feed rate and point angle for fixed values of thrust. Some measure of agreement was found between these two independent pieces of work. Bera and Bhattacharrya's analytical equation for the thrust produced when drilling metals has been modified for anisotropic materials such as bone.

Research on Vibration Drilling 1Cr18Ni9Ti Stainless Steel Micro-Hole

2012 ◽  
Vol 591-593 ◽  
pp. 423-427
Author(s):  
Peng Zhang ◽  
Yan Jing ◽  
Xing Yu Guo
Keyword(s):  
Stainless Steel ◽  
Hole Drilling ◽  
Drilling Process ◽  
Drill Bit ◽  
Drilling Force ◽  
Process Mechanism ◽  
Micro Hole ◽  
Vibration Drilling ◽  
Hole Machining

The austenite 1Cr18Ni9Ti stainless steel is one of difficult-to-cut materials. It has poor dilling process, especially for micro-hole machining. The main reasons are the tiny drill, poor rigidity, easy to deviation. Moreover, the chip is difficult to discharge, so the drilling force is increased and the drill bit is easy to break, or even it is impossible for micro-hole drilling. In this paper, the vibration drilling process is adopted. The vibration drilling 1Cr18Ni9Ti stainless steel micro-hole process mechanism is researched. The stainless steel micro-hole drilling experiments are conducted. The results show that the vibration drilling can be a better solution for 1Cr18Ni9Ti stainless steel micro-hole processing.

Dynamic Instability in a High Speed Drilling Process

2005 ◽  
Author(s):  
Bo-Wun Huang ◽  
Jao-Hwa Kuang
Keyword(s):  
High Speed ◽  
Multiple Scales ◽  
Thrust Force ◽  
Dynamic Instability ◽  
Work Piece ◽  
Drilling Process ◽  
Drilling Depth ◽  
High Speed Drilling ◽  
Spinning Speed ◽  
The Galerkin Method

The variation of dynamic instability in a high speed drilling process was investigated in this article. A pre-twisted beam is used to simulate the drill. The time dependent thrust force and drilling depth are considered in the equation of motion. A moving Winkler-Type elastic foundation assumption is employed to the drill tip to approximate the time varying boundary conditions in the drilling process. The Galerkin method is used to formulate the characteristic equation in a discrete form. The variation of instability regions of the drill system is solved and analyzed by employing the multiple scales perturbation method. Numerical results indicate that unstable regions are enlarged and shifted toward a lower frequency suddenly at the moment when the drill attaches the work piece. The effects of spinning speed, pre-twisted angle and thrust force of the drill on the variation of the dynamic instability in a high speed drilling process are also studied.

Drilling Force in High Speed Drilling Carbon Fibre Reinforced Plastics (CFRP) Using Half Core Drill

2010 ◽  
Vol 102-104 ◽  
pp. 729-732 ◽  
Author(s):  
Dong Liu ◽  
Hong Hai Xu ◽  
Chao Ying Zhang ◽  
Hong Juan Yan
Keyword(s):  
High Speed ◽  
Thrust Force ◽  
Air Cooling ◽  
Carbide Tool ◽  
Drilling Force ◽  
Drilling Tool ◽  
Reinforced Plastics ◽  
Drilling Tools ◽  
High Speed Drilling ◽  
Carbon Fibre Reinforced Plastics

The Composites are difficult machining materials which widely used in aerospace industry due to their excellent mechanical properties. Tool wear and delamination are considered the major concern in manufacture the parts and assembly. The thrust force and torque affect the tool life and delamination mostly. This paper investigated the drilling force and torque of carbon fibred composite with carbide drilling tools and half core drilling tool. The experiments were carried out under air cooling cutting conditions and the drilling force using carbide tool and half core tool were compared and the experimental results indicated that the drilling forces using half core drill were smaller than that of using carbide tool.

Sign in / Sign up

Export Citation Format

Share Document