WORKING WITH MILLING MACHINE MILLING OPERATION WORKING WITH MILLING MACHINE

After following this study, student must be able to: LEARNING ACTIVITIES After following this study, student must be able to: Explain how to operate the milling machine Operate the milling machine Evaluate the component based on the specification

to operate the milling machine The learning objectives (students are able to): (understand the principles and the function) (explain the kind of milling machine) understand the components of milling machine)

the principles of milling machine The working principles The milling cutter is rotating, the object is stack on the table And move vertically or horizontally or slowly

The function of milling machine (flatten the surface) (making cleft) (make layer thing) (enlarge the hole) (make a wheel guard)

Kinds of milling machine Universal milling machine Verticall milling machine Horizontal milling machine

Kind of milling machine (vertical milling machine) The main spindle axis vertically with the table the head can be rotated so the axis can Form an angle towards the machine axis.

Kinds of milling machine Horizontal milling machine The main spindle axis is in line with the machine table The machine table can be moved in three sides, lengthen, diagonal, vertical

Kinds of milling machine – universal milling machine the main spindle axis is in line with the table The table can be rotated 45 degree to the pole

the milling machine equipment Tail Stock Chuck Dividing Head

the milling machine Equipment Arbor Adaptor Milling cutter

Vice Kinds of Vice (rotating vice) Rotary table Universal vice

Dividing head The Purphose of dividing head To divide the object angles equally

The function of tail stock To hold a working object that will be milled

Arbor (the arbor function) (as the milling cutter teeth) (there is a machine forworms)

The function of Adaptor As the holder in the cutter Various kinds with the same principles

Kinds of milling cutter Plain milling cutter End milling cutter Side milling cutter

Kinds of milling cutter Face milling cutter Angular milling cutter T Slot milling cutter

Kinds of milling cutter Slitting saw Spur gear cutter Form milling cutter

Plain milling cutter The teeth are only in the surrounding of the diameter Could give a thick cutting better for the first step of milling process

Side milling cutter it has toothed sides and it is thiny used to make firecleft and other clefts.

End milling cutter has tooth in all the sides and on the top. used to milling the surface and the vertical/horizontal

Face milling cutter (the same as milling cutter, but bigger) there are many clefts for cutter place

T-Slot milling cutter taper-shaped bar to make T-slot

Angular milling cutter (consist of single-angled and twin-angled cutter) use to milling an object to form an angle expected.

Slitting saw The diameter is 2 1/2” to 9” The thickness is 1/32” to ¼” used to make small groove and cut the object

Form milling cutter used to make concave and convex groove

Spur gear cutter Digunakan untuk mengefrais gigi-gigi pada roda gigi (to milling the teeth on the Spur Gear each cutter has its own size and stated in tooth number in the module

the switch socket on the milling machine Kinds of the switch socket Main Switch Coolant Switch motor Extra switch

the main switch socket 1. (the main switch socket) (transform the electric power to all the milling machine series) 2. (the extra switch socket) (to set the rotation and the speed) 3. (the cooler Motor switch) (it is used while it needs continue cooler in cutting process)

set the rotation of the machine (by setting the belt in good position) (each machine is equipped by the rotation table)

relate the automatically movement Relate the movement automatically handel pemutar didorong kedalam The handle is pushed inside) The movement automatically stop The handle must be pulled out

automatically movement

stating the notch It can be seen like: P = Tp x Z x n P = the notch Z = number of cutter in milling machine Tp = the thickness n = the number of rotation in minutes

Resume milling machine is one of machineries to work on the surface of the object it consist of horizontal, vertical, and universal milling machine the apparatus are: arbor, Colet, the head, tail stock, vice, round vice, universal vice and round table

Resume the milling cutter are: plain cutter, sides cutter, head/top cutter, T-cutter, etc the switch socket are: the main one, the extra one, and the cooler rotor socket. to set automatically the position the cutting slice is 0.005 to 3.81 mm

formative Test Mention three kinds of milling machine? What is the function of arbor? What is the function of the tail stock on the milling? If we make a cleft like in the picture below, what kind of tool should be used? 5. Diameter of the cutter 100mm, the teeth are14, the speed is 20m/minute, the thickness 0,5 mm, how many cutting process in 1 minute?

operating the milling machine The purposes Students are able to: Identify the operation procedures state the rotation of the machine having the milling process state the standard of time of the process

the first step in milling procedures (check the object) (read the picture and understand it) (study the operation plan) (prepare the measurer) decide the cutter and the machine that will be used decide and prepare the helping apparatus

state the rotation of the machine the rotation is decided from the object, speed, and the diameter n = Vc /  D Keterangan : N = rotation (rpm) Vc = cutting speed (m/minute)  = 3,14 D = Diameter of milling cutter

milling process Procedures Set the vice on the table Place the object Place the milling machine Set the object The process of milling

set the vice on the table (check the vice) (place it in the center of the table) (put in the holder nuts in th cleft on the table) the tightening of fastened the holder to avoid the movement of the vice)

set the vice on the table (put the dial indicator using the block magnet) (place the parallel on the vice) (shake the machine, see the result) (shake the table, see the result)

placing the working object (place a holder under the object) (place the object on the vice) (tighten the vice, so the object is properly save)

placing the cutter (place the arbor first) (place the cutter which matched with the arbor) (put the nuts into and tighten it)

setting on the object (place piece of paper on the object) (meet the object with the milling cutter) (state the main spindle scale on (0) position.

milling process Average milling Switch on the main button. Set the speed which in accordance to cutter sizes or the object. Setting the object on the (0) position Turn on the machine and move the table to start the cutting Measure the result as expected ones.

state the standard time Time needed in once feeding process L total t = n x s t = time of 1 x feeding L = the length of object (mm) n = the cutter rotation(rpm) s = feeding / the speed L total = L + L prior + L final

Resume (count the milling process in in every cutting process) (placing the vice must be set up using the dial indicator) (placing milling cutter on arbor should be tighten up) (process of preparation and the action) (count the milling process in in every cutting process)

formative Test Why is vice placed in the center? What tool that used to connect the milling cutter and the spindle? Mention the steps how to set the object with the millling cutter? Mention 2 ways to mile the 2nd object with 40 x 60 x 100 mm! Count the time of milling process on the plane 60 x 100 mm by using milling cutter 40 mm in diameter, feeding = 0,2 mm and rotation 200 rpm!

Component checking The purposes Students are able to: read the object visually choose the suitable masurer Applying a good technique check the working object documentate the result

checking the working object visually Rugotest measurement aids

milling apparatus Vernier caliper Micrometer

Kinds of vernier caliper Vernier caliper nonius scale Vernier caliper dial indicator

Vernier caliper nonius scale Read the measured value read the milimeter in the left side of (0)! read the lines in nonius scale from (0) to the main all the measurement are the number of the two calculations

Vernier caliper dial indicator Read the measured value Here, the main scale value is 6.00cm; the value on the indicator dial is 0.15mm. The total reading is 60.15mm

How to read External Diameter right false

How to read Internal Diameter right false

How to read depth right false

Micrometer Kinds of micrometer External Micrometer Internal Micrometer Micrometer of the depth

Read the measured value Micrometer Read the measured value Here, the main scale value is 4.00mm The value on the indicator dial is 0.24mm The total reading is 4.24mm

How to read Hold by hands Settled on the place

reporting Object name : ................... MEASUREMENT DATA Order number : ................... Object name : ................... Drawing number : ................... Part number : ................... Amount : ................... Number Section Normal Tolerance Measuring instrument Result Initial 1 2 3 Length 100  0,1 Wide 20 Thick 4 Path length 23 5 Path wide 8 6 inclination 15

Resume (checking on the size and the roughness) (to get the best result, use the best tools and technique) (there should be more than two measurement to get the best result)

Formative test Mention three function of venire caliper? How much is the micrometer acuracy? Hown much is in the following picture? 4. How can you read the following number?

Evaluation (make a head of the hammer, if the row materials is steel, St.37 with 110x22x22mml)

The End finishing this learning, you are allowed to join the uji kompetensi! if you get ≥7.00, so you are considered pass

Daftar pustaka Setiadji D, Herianto, dan Sugiarto. 2007. Melakukan Pekerjaan dengan Mesin Frais. Dinas Pendidikan Kabupaten Mojokerto, SMK Negeri 1 Pungging. Mojokerto. Rochim T dan Soetarto S.M. 1980. Teknologi Pengukuran (Metrologi Industri). Proyek pengadaan buku pendidikan teknologi, Dikmenjur, Depdikbud. Jakarta.

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