Grinding is the process of removing...
Transcript of Grinding is the process of removing...
![Page 1: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/1.jpg)
![Page 2: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/2.jpg)
Grinding is the process of removing metal by the application of abrasives which are bonded to form a rotating wheel.
It is used for good surfaceFinishing, less grinding wheel wear, free of grinding cracks and burns.
PRINCIPLE
![Page 3: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/3.jpg)
![Page 4: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/4.jpg)
CONSTRUCTION The grinding machine consists of a power driven
grinding wheel spinning at the required speed and a bed with a fixture to guide and hold the work-piece.
coolant is placed to cool the work piece so that it does not overheat and go outside its tolerance.
![Page 5: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/5.jpg)
Types of grindersBelt grinder:
It is suitable for all kind of applications like finishing, deburring and stock removal.
![Page 6: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/6.jpg)
Bench grinder:
Two wheels of different grain sizes for roughing and
finishing operations and is secured to a workbench.
![Page 7: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/7.jpg)
Cylindrical grinder
![Page 8: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/8.jpg)
Surface grinder
![Page 9: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/9.jpg)
USES OF GRINDING MACHINE
It is used for flat ,conical and cylindrical surfaces.
finishing internal cylinders or bores.
forming and sharpening cutting tools
snagging orremoving rough projections from castings and stampings;
![Page 10: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/10.jpg)
Advantages:
Work is supported rigidly.
Productivity is high.
Less skill is needed.
No chatter or deflection of work.
![Page 11: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/11.jpg)
Disadvantages:
Work with several diameters cannot be handled well.
More time is involved in change over of centreless grinder.
![Page 12: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/12.jpg)
Drilling Creates a round hole in
a workpart
Contrasts with boring which can only enlarge an existing hole
Cutting tool called a drill or drill bit
Customarily performed on a drill press
(b) drilling
12
![Page 13: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/13.jpg)
Used to slightly enlarge a hole, provide better tolerance on diameter, and improve surface finish
13
REAMING.
![Page 14: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/14.jpg)
Tapping
Used to provide internal screw threads on an existing holeTool called a tap
14
![Page 15: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/15.jpg)
Counterboring
Provides a stepped hole, in which a larger diameter follows a smaller diameter partially into the hole
15
![Page 16: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/16.jpg)
Shaping and Planing
(a) Shaping, and (b) planing
16
Similar operationsBoth use a single point cutting tool moved linearly relative to the workpart.
![Page 17: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/17.jpg)
Shaping and Planing A straight, flat surface is created in both operations
Interrupted cutting
Subjects tool to impact loading when entering work
Low cutting speeds due to start-and-stop motion
Usual tooling: single point high speed steel tools
17
![Page 18: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/18.jpg)
Components of a shaper
18
![Page 19: Grinding is the process of removing metalanamesin.lecture.ub.ac.id/files/2015/09/5-Grinding-Drilling... · Grinding is the process of removing metal by the application of abrasives](https://reader034.fdocuments.us/reader034/viewer/2022052602/5b3de7ca7f8b9a560a8e56f7/html5/thumbnails/19.jpg)
Open side planer
19