Explain rake angle - angles of a drill, Mechanical Engineering

Assignment Help:

Explain Rake angle - Angles of a drill

It is also known as helix angle .It is the angle formed between a plane containing the drill axis and the leading edge of the land. It can have a positive, negative or zero value. For a right hand flute its value is positive, for a left flute negative and for parallel flutes it is zero. For most drill the value of rake angle varies from 0 to as high as 48.However, 16 to 32 ranges is quite common for normal materials. Higher values are suitable for softer materials and lower values for harder materials. The power or torque required to rotate the drill is greatly influenced by this angle. Larger the value of this angle, lesser will be the torque required and vice-versa

 


Related Discussions:- Explain rake angle - angles of a drill

Define edge joints, Edge joints: The flanged edge joint is suit- able for p...

Edge joints: The flanged edge joint is suit- able for plate 1/4 inch or less in thickness and can only sustain light loads. Edge preparation for this joint may be done.

Mechanisms of machines, slidder crank chain / reciprocating engine mechanis...

slidder crank chain / reciprocating engine mechanism pics

Project help, need help to calculate how much a base must weigh to keep a o...

need help to calculate how much a base must weigh to keep a object on to stable when a force is applied from the side

Standard factory formed insulation on flanges and valves, Q. Standard facto...

Q. Standard factory formed insulation on Flanges and Valves? All fittings are to be insulated with standard factory formed insulation. All joints shall be buttered and sealed.

Calculate the amount sand-aggregate, Calculate the amount of cement, sand,...

Calculate the amount of cement, sand, aggregate, and water needed to create a concrete mix with a 28-day compressive strength of 34 MPa for a 10 m x 10 m x 0.25 m structure given t

Processing sequence for manufacturing coupling nut, Processing Sequence for...

Processing Sequence for Manufacturing Coupling Nut Referring to the Figure 12 below, we now illustrate the processing sequence for manufacturing coupling nut.

Deficient frame and redundant frame - truss, Deficient Frame and Redundant ...

Deficient Frame and Redundant Frame - truss: Deficien t Frame: If the numbers of member in the frame are less than (2 j -3), then the frame is called as deficient fr

Determine the reactions at beam, Determine the reactions at bea: A can...

Determine the reactions at bea: A cantilever AB, 1.8 m long is fixed at A and carries uniformly distributed load of 20 kN/m over its entire length and a point load of 30 kN at

Determine the ratio between moment and load, Determine the ratio between mo...

Determine the ratio between moment and load: Any close coiled helical spring of circular section extends 1 mm while subjected to an axial load of W and then given an angular r

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd