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- 1)Meaning of the term "Grade" in a grinding wheel is a. How much spacing between the abrasive grains in the grinding wheel b. The ability of the abrasive grains to hold together to form the grinding wheel c. The strength of the bond inside the grinding wheel d. The abrasive grain size used in grinding wheel production 2)In a Vernier Caliper if the vernier scale with ______________divisions (lines), will be 0.05 mm least count. a. 50 b. 30 c. 20 d. 401. If a machinist wanted to drill a % inch hole in a piece of machine steel using a high speed steel drill. At what speed in revolutions per minute should he operate the drill press? 2. Find the revolutions per minute of an 8 mm drill if it is used to cut an aluminum workpiece using a high carbon steel drill. 3. The rpm setting of the drill press is set to 600 rpm. What is the maximum diameter in inches of a high speed drill if it is used to drill a tool steel material? 4. A drill press has the following rpm settings; 350, 600, 1100, & 1600. What rpm setting must be used if a 15 mm high speed steel drill is used to cut brass workpiece? 5. A machine operator drills a hole of a 3/8 inch diameter to a stainless steel using a carbon steel drill. He sets the drill press rpm setting to 900 rpm. Is he operating at correct setting? If not, then what must be the correct rpm setting considering that the machine has the following rpm settings of 300, 600, 900, 1200, and 1800?Write the NC part program for the part. Holes are threaded and requires two tools; T1 is a 0.5" HSS drill bit and T2 is a 0.5" tapping bit. The rest of the features are cut using a 0.75" HSS milling tool, T3. Feed rate and spindle speed are 10 ipm and 2000 rpm. The material is low- carbon steel. Part thickness is 0.5”. Use dotted lines two show the path of tools movements. Set up proper operation conditions as discussed in the class today.
- Answer the following questions by circling True or False. 1. Capstan and turret lathes utilise many tools simultaneously to improve the productivity. ... 2. Lead screws in the machine tools can convert linear motion to rotary motion. 3. Automatic lathes are used for medium batch production. 4. Arithmetic progression is preferred for higher spindle speeds. 5. Tool layouts can be converted into a cam profile that is used for the control of the tool. () () 6. Higher the rake angle, less the cutting forces. 7. A very large clearance angle increases the strength of the tool tip. 8. The continuous chip causes poor surface finish and low tool life. 9. Ceramics are the hardest tool materials in the world. 10. The smaller the cutting ratio, the larger the cutting deformation. 11. A shaper can be used for maching flat surfaces in horizontal and angular directions. 12. During the return stroke of the shaper, the cutting tool will simply be sliding... 13. The cutting speed of the hydraulic shaper…I need correct answer please Write a CNC program to perform threading operation on CNC lathe machine on a mild steel sample of 2 cm diameter. Write the program in absolute mode and assume if any other necessary information isGiven the following G-code, what is the width of the rectangle if a 1/2" end mill is in the tool holder? (assume (0,0,0) is at the lower left, and z=0 is set at the top surface of the workpiece as usual) G20 G90 G28 M06 T1 M03 S1000 GOO XO YO Z-.25 G41 D1 G01 X1 Y1 Z-.25 F3 G01 X5 Y1 Z-.25 F3 G01 X5 Y3 Z-.25 F3 G01 X1 Y1 Z-.25 F3 GO0 X4 YO Z.25 a) 3.5" b) 4.5" c) 3" d) 4" e) 5"
- Required information Sally is making a sine bar, which is used to machine angles on parts (see the given figure). She has a 1.250-inch-thick bar that needs 90° grooves machined into it for precision ground 1.0000-inch diameter cylinders. A sine bar is used by placing different thicknesses under one of the cylinders so that the proper angle is attained. Sally wants the distance between the centers of the cylinders to be D= 5.4 inches. -D -1.0000 Ø How deep should she mill the 90° grooves so that the top of the sine block is 2 inches tall? The depth of the mill should be inches.Test-II. Write down all the operations or step by step procedure on how to create the object below. Write down also the name of the machines and the tools that you will use to complete the drawing below. 824 020 015 22 15 35 40 100 NOTE: ALL DIMENSIONS ARE IN MM ALL CHAMFERS ARE 1X 45Required information Sally is making a sine bar, which is used to machine angles on parts (see the given figure). She has a 1.250-inch-thick bar that needs 90° grooves machined into it for precision ground 1.0000-inch diameter cylinders. A sine bar is used by placing different thicknesses under one of the cylinders so that the proper angle is attained. Sally wants the distance between the centers of the cylinders to be D= 5.9 inches. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 7 -1.00000 * How deep should she mill the 90° grooves so that the top of the sine block is 2 inches tall? (Round the final answer to four decimal places.) The depth of the mill should be 7071.067 inches.
- -How many holes require drilling? -What is the center to center distance of the 6mm tapped holes? -What tap drill is used for holes marked Z? -How many surfaces are machine finished? -What are the dimensions of the face marked F & C? -What are the dimensions have symbols A, E &, B -In what dihedral angle is the drawing made? -What is the max and min dimensions of D -What is the tolerance of measurement D?What two other tools could be used with the answer to the previous question to check for perpendicularity?Tool forces are generated by the fixture or jig during a machining cycle D O True O False The tool designer decides the final design and set-up of the proposed jig or fixture. O True O False When creating a drawing, words should replace drawn details or views. O True O False If the hole is off location and the diameter is to the low limit of the tolerance, then the part can still pass inspection. O True False