Question
Download Solution PDFThe point angle of twist drill depends upon the _________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- Drilling is a cutting process in which a hole is originated by means of a multi-point, fluted, end cutting tool.
- As the drill is rotated and advanced into the workpiece, the material is removed in the form of chips that move along the fluted shank of the twist drill.
- The point angle is the angle between the cutting edges (lips).
-
The point angle varies according to the hardness of the material to be drilled
Tool geometry:
The figure showed the three most common angles,
- Point angle
- Helix angle
- Lip relief angle
The standard point angle of 118° is most common and the standard helix angle is 27.5°.
Last updated on Jul 17, 2025
-> The Railway Recruitment Board has scheduled the RRB ALP Computer-based exam for 15th July 2025. Candidates can check out the Exam schedule PDF in the article.
-> RRB has also postponed the examination of the RRB ALP CBAT Exam of Ranchi (Venue Code 33998 – iCube Digital Zone, Ranchi) due to some technical issues.
-> UGC NET Result Date 2025 Out at ugcnet.nta.ac.in
-> UPPSC RO ARO Admit Card 2025 has been released today on 17th July 2025
-> Rajasthan Police SI Vacancy 2025 has been released on 17th July 2025
-> HSSC CET Admit Card 2025 has been released @hssc.gov.in
-> There are total number of 45449 Applications received for RRB Ranchi against CEN No. 01/2024 (ALP).
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here
-> Bihar Police Driver Vacancy 2025 has been released @csbc.bihar.gov.in.