DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 26, Problem 13RQ
To determine
The problem of cutter offset in CNC programming by making a sketch showing an end mill cutting a perimeter on a square plate.
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6. Write one block of code to perform the indicated operation. Assume the location
is X2.0, Y2.0, and the depth is Z-1.5 for each operation.
1) Drill with dwell of 0.2 seconds
2) Peck drilling cycle with a 0.15" peck depth
3) Chip breaker with a 0.15" peck and full retract every 0.6"
4) RH tapping cycle for 14-16 NC thread; define a spindle speed and feed
5) Bore a hole with the tool being retracted manually
I need answer fast you can!
2. Write a complete program to mill around the part. The endmill is .500 diameter, and you
want to leave .010 stock for a finish pass. Enter a diameter offset number (Dn) command for tool
DIAMETER Geometry of .520 for machining a roughing pass around part. And then define
another pass around part using the same program coordinates but a different diameter offset
number (Dn), and enter in the correct diameter offset value of .500 to machine part to the finish
size. TOOL 1 has 0.520 in D21 and 0.500 in D01
Tool
Speed (rpm)
Feed (ipm)
Operation
Finish outside contour, x .50 deep
Tooling
1
.5D endmill
1200
6.
25
R.25 2 PL.
R .50
2.00
XO YO
4.0 SO.
1.0 SQ.
5 DA. EM
1.250-
X-2.5 Y-2.0 START POINT
Chapter 26 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 26 - What human attribute is replaced by a CNC machine?Ch. 26 - Give an everyday example of a household device or...Ch. 26 - Explain how a toaster could be made a closed-loop...Ch. 26 - Prob. 4RQCh. 26 - Prob. 5RQCh. 26 - Prob. 6RQCh. 26 - What kind of operations on a milling machine...Ch. 26 - How is a machining center different from a milling...Ch. 26 - Prob. 9RQCh. 26 - Many manufacturers have purchased large machining...
Ch. 26 - Why was it necessary for machine tool builders to...Ch. 26 - Prob. 12RQCh. 26 - Prob. 13RQCh. 26 - Some of the functions performed by the operator in...Ch. 26 - Prob. 15RQCh. 26 - Prob. 16RQCh. 26 - Prob. 17RQCh. 26 - Prob. 18RQCh. 26 - Prob. 19RQCh. 26 - Prob. 20RQCh. 26 - Prob. 21RQCh. 26 - What is an encoder?Ch. 26 - What does a post processor do?Ch. 26 - What is a peck-drilling subroutine for a CNC...Ch. 26 - What is pocket milling, and what kind of milling...Ch. 26 - How are touch probes used in CNC machines to...Ch. 26 - What are G words used for in CNC?Ch. 26 - What major structural changes are introduced into...Ch. 26 - What process steps are eliminated by the UHSMC in...Ch. 26 - Draw a large circle and imagine you are (the tool)...Ch. 26 - Prob. 1P
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- What is the purpose of a clearance plane in CNC programming and milling?arrow_forwardIf a G1 code command is programmed partway through a machining operation, but no F-value is given in that block, what feed rate will be used?arrow_forward4. Write an APT NC Part program (milling and drilling) for the following work part.The outline of the part shown in Figure is to be profile milled using a 30 mm diameter end mill cutter. The part is 15 mm thick. Use the lower left corner of the part as the origin in the x-y axis system. The two holes are already drilled to fix the work part in the machine (no need to include in program). Use absolute positioning. The program style should be similar to the explanation in PPT. The expected answers – 1. To define all the positions of holes, curves and lines. 2.Movement of cutter outside the work part. 3.Step by step movements for drilling.arrow_forward
- 7. Please analyze the reasons of errors in turning operation with tool tip programming shown in following figures and give your solutions of eliminating the errors. Error Programmed Point Tangential Toolpath Error € Programmed Path Page 7 of 12arrow_forwardWrite a CNC Milling program to machine the outer profile of a 6 mm thick aluminum sheet. Cutting parameters: depth of cut 3 mm, speed 1200 rpm, feed rate 100 mm/min, and coolant. Tool size 8 mm. (you can use the tool cutter compensations codes). Use an absolute coordinate from the point identified as tool position. 10 40 R 10 R 10 40 Tool position 20 z, 10 mm above All units in mm the sheetarrow_forwardWhat’s the correct answer for this please ?arrow_forward
- Q: Describe G03 used in a CNC milling machine G-code. Include the syntax of both versions and give a detailed example.arrow_forwardWrite a CNC part program to for cutting a sheet metal part for fabrication as shown in thefigure below. The raw material used is a 2.5mm Mild Steel Plate and is positioned to the bedwith a 5.0mm offset. Use ncviewer and show imagesarrow_forwardI need the answer as soon as possiblearrow_forward
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