Mechanical Engineering - Production Engineering - Discussion


Internal gears can be made by

[A]. hobbing
[B]. shaping with pinion cutter
[C]. shaping with rack cutter
[D]. milling

Answer: Option B


No answer description available for this question.

Vinayak said: (Feb 13, 2014)  
How is it possible to make internal gears with a pinion, I have heard of broaching operation.

Sahil said: (Mar 2, 2014)  
What is the pinion cutter?

Atwa said: (Apr 29, 2014)  
The opinion gear must be harder than its rack gear, it's required harder cutter for machining. But when we want to machine an internal gears it's (rack gear), so just shaping it with rack cutter.

Karthik said: (Aug 5, 2014)  
Its vertical shaper machine which tool reciprocates top to bottom containing pinion cutter as a tool while the workpiece ie., internal gear is set to cut internal gear.

Banty said: (Nov 2, 2014)  
It is shaping with pinion and by broaching tool also.

Sreeram said: (Nov 17, 2014)  
I think it could be done by broaching.

Narmada said: (Mar 2, 2015)  
What is broaching?

Hsh said: (Mar 3, 2015)  
Ya it is one of the type of cutting.

Nhn said: (Jul 4, 2015)  
We can produce by milling also.

Sudha Brahmanaidu P said: (Jul 20, 2015)  
Answer B is correct. But it is not confirmed also generated by form milling. But according sequence B is correct.

Ruban S said: (Aug 7, 2015)  
What is the difference between pinion cutter and rack cutter?

Rajat Kulshrestha said: (Sep 24, 2015)  
How a pinion is used to make internal gear?

Vaibhav said: (Oct 17, 2015)  
In my point of view answer is shaping with rack cutter. Because with the help of rack we can easily cut inner part. But we cannot cut through pinion cutter if gear is small.

Hatkar Omesh said: (Jan 30, 2016)  
Internal gears can generated by broaching tool. This tool is passed through the job like reciprocating motion.

Vimal said: (Mar 11, 2016)  
How it is possible?

Arvind said: (Jul 1, 2016)  
Internal gears are cut on a gear shaper. It is possible yes ya no.

Kalyan said: (Jul 5, 2016)  
It is not possible by hobbing we cut the internal gears.

Saurav said: (Aug 17, 2016)  
Internal gears can be cut by gear shaping pinion cutters and also by broaching and single point tool cutters. But broaching is expensive operation thus avoided. By milling cutters, it is not possible. The hobbing machine can't produce internal gears.

Virdi said: (Aug 22, 2016)  
Hobbing is a machining process for gear cutting.

Avi said: (Oct 5, 2016)  
I agree with you @Saurav.

Trinadharao said: (Oct 13, 2016)  
Internal gears can be made by?

Answer: All of these.

But specified hobbing process.

Ritzryt said: (Nov 15, 2016)  
Why hobbing is not correct?

Rahul said: (Nov 15, 2016)  
The pinion cutter is also called external gear.

Sanju said: (Dec 27, 2016)  

Pinion is right answer.

Nilesh P Nagaonkar said: (Feb 23, 2017)  
Machine opter gear shaping Tos machine.

Jeet Sharma said: (Apr 2, 2017)  
(I) Internal gears can be produced by shaping with pinion cutter.
(II) Gears can be produced by Hobbing Process.
(III) Gears can be finished by burnishing.

Vikash said: (May 1, 2017)  
The Correct answer is shaping with rack cutter.

Vrc said: (Jun 19, 2017)  
Dear All,

According to my knowledge, we can cut Internal gears with shaping with pinion cutter.

Please watch some videos on youtube maybe you people also clear your doubt.

So, given answer is correct.

Jeetram Prajapati said: (Aug 3, 2017)  
It has done by rotating pinon with partialy sliding in axial direction of pinion.

Bagish Kumar Pathak said: (Sep 26, 2017)  
The internal gear is a gear with its teeth cut in the internal surface of a cylinder and meshes with spur gears. In its manufacturing, because of its shape, the usual hobbing machine used in spur gear production cannot be used. Generally, it is made with gear shaper (or gear shaping machine) equipped with a pinion cutter.

Likith said: (Mar 21, 2018)  
Hobbing is the right answer.

Ref: RS: Khurmi.

Sreenu said: (Jun 11, 2018)  
Spur gear can not be made with the hobbing process. Only using with shaping with pinion cutter.

Ananta Zade said: (Oct 8, 2018)  
Also known as broaching.

Ashwani said: (Dec 21, 2018)  
Pinion cutter means? Explain in detail.

Dhananjay Bhile said: (Jan 23, 2019)  

An internal gear having one side blind is produce by pinion cutter. And broaching is done on hollow internal gear. Broaching is more economical and fast then shaping by pinion cutter.

Neel said: (Mar 17, 2019)  
How internal gears are being made by the tapping process? Please explain it in detail.

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