Milling Machine Questions and Answers

(mechanical engineering) A machine for the removal of metal by feeding a workpiece through the periphery of a rotating circular cutter. Also known as miller.

Architecture:milling machine

A machine consisting of a rotating mandrel carrying a milling cutter, and a movable table, operated by a feed screw, to which is bolted the object to be milled.

Britannica Concise Encyclopedia:??milling machine

Machine tool that rotates a circular tool with numerous cutting edges arranged symmetrically about its axis, called a milling cutter. The metal workpiece is usually held in a vise clamped to a table that can move in three perpendicular directions. Cutters of many shapes and sizes are available for a wide variety of milling operations. Milling machines cut flat surfaces, grooves, shoulders, inclined surfaces, dovetails, and T-slots. Various form-tooth cutters are used for cutting concave forms and convex grooves, for rounding corners, and for cutting gear teeth.

Wikipedia:Milling machine

A milling machine (also see synonyms below) is a machine tool used to machine solid materials. Milling machines are often classed in two basic forms, horizontal and vertical, which refers to the orientation of the main spindle. Both types range in size from small, bench-mounted devices to room-sized machines. Unlike a drill press, which holds the workpiece stationary as the drill moves axially to penetrate the material, milling machines also move the workpiece radially against the rotating milling cutter, which cuts on its sides as well as its tip. Workpiece and cutter movement are precisely controlled to less than 0.001 in (0.025 mm), usually by means of precision ground slides and leadscrews or analogous technology. Milling machines may be manually operated, mechanically automated, or digitally automated via computer numerical control (CNC).

Milling machines can perform a vast number of operations, from simple (e.g., slot and keyway cutting, planing, drilling) to complex (e.g., contouring, diesinking). Cutting fluid is often pumped to the cutting site to cool and lubricate the cut and to wash away the resulting swarf.

Milling Machine Q&A

What are the defect of milling appliance (metal milling machine)?
It depends what you plan to make with it. A milling electrical device is less than ideal for making round parts, for example - these are better made on a lathe. There are adjectives kinds of limitations dependent on the machine itself too. size of parts, speed of chuck, tool...

How to obtain out melt contained by sugar from Food Mill (grinder machine)?
I had the bright idea to trade name powdered sugar using a food mill, the heat solidified the sugar in the actual grinder piece, which I cannot open up or access. Any inventive tips or ideas? If this is a place where on earth the grinder can???

I am brand new to a Cincinnati macron milling contraption and want to identify the Sybil???s on the controls?
on a okuma machine the symbols are named eg slb single block but not on the cinncinati Maybe you should read the mitt book. Or ask your employer.

What does CNC be a sign of , resembling a cnc milling appliance?
Computer Numerically Controlled ... I have several Lathes and mills and am looking for work. Feel free to e-mail me with any ? slimer11(a)prodigy.lattice cnc u take a sheet of steel it punches out holes and the shape of the steel then they bend the quantity into...

What should we share the clients to conservation the MTM mill machines during they are using them?
(1).In order to ensure normal operation of the equipment ,a almanac containing strict rules and procedures for its operation, maintenance should be well prepared and followed .Tools ,replacement parts for maintain ,repairing and lubricating oil and grease must be available for immediate use....

Whats a milling mechanism is used for?
Could any 1 tell me what a milling machine is used for. For example roughing. Thanks. In engineering it's a tool which has a vice to clamp the metal which is to be milled and a cutter which rotates and cuts the metal to size. The cutter could be anything from a small...

Whats are the benifites of milling tool?
Machines have to have parts, that's a given. As machines obtain more and more complex so do the parts that make them up. Since a lot of machinery requires metal parts, here are effectively two options to make complex parts: cast and machining. Unless the number of parts is extremely high, casting can...

Information on Menards 30 drilling and milling Machine?
Need to know where to get parts and information roughly speaking this machine???the company has went out of business. I tried to rach Menards they could not lend a hand. I would get a hold of some well established device shops for advice, if anyone would know it would be them. Good???

What are the differences between mill, factory and plant? And between mill and electrical device?
between wire rod mill and wire rod plant, between flex rod mill and wire rod machine. All handle similar activities. But are different surrounded by the way it is handled. Totally, adjectives of them are engaged in industrial happenings. Look in a apposite dictionary. I...

How to operate a milling apparatus?
It???s like operating an Etch-a-Sketch, but in three dimensions, and next to more opportunities to injure yourself. Plus, you get bits of hot metal thrown at you. I enjoy to assume that you are referring to a milling machine in a piece of equipment shop, if that is the case some one will show???

What are the disadvantages and advantages of the following:milling ,turning,grinding and drilling machines ?
on manufacturing processes.(techniques) No direct comparison, since they are all designed to do different things.

How to stop getting cramp surrounded by calf when running on tread mill (other than stop going on the contrivance!!)? Thanx?
Have lately been getting real impossible cramp when running and then cant run or use exercise equipment for quite a while. Any reason why this shold start happening? Eat Bananas before you go on and stretch for 5 to???

What are the limitations to the contraption design of a milling apparatus?
this is for my engineering work, even my teacher can't find any of the information on the internet. please help me answer this. The problem really is what type of milling contrivance you are interested in, the main makeshift types are Horz. Mill, End Mill, universal mill. In...

How to turn digital calipers into digital read outs on a micro milling gadget.?
I have recently purchased a micro milling piece of equipment. It does not come with Digital readouts. I am wondering if anyone out there can illustrate to me how to turn three calipers into an X, Y, and Z digital readout. I would buy a DRO???

What does "power down feed" suggest for a instruction manual milling contrivance?
It means that the lowering of the tool into the work, or raising the work and table into the tool, is assisted or completely operate by a motor.

Information on Turning, Milling and Grinding machines?

Hi does anyone know where I can can get detailed information on Turning, Milling and Grinding machines and within applications? Hi, I???am Sourav Banerjee ??? A Man with a Mission. A mission to Make Things Easier for you! Take This ??? You simply register here on this website, and post or upload any???

Is at hand any contrivance to verbs coolant solution contained by a tube mill short effecting on the juice characteristic?
There are some pollution in the tube mill when coolant liquid circulating surrounded by the system ,after a period of time this pollution effected on the juice and gradually the fat is seperated from the juice and the percentage comes???

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BCaiWa is Technical support at Luoyang Moheman Heavy-duty Machinery Co.Ltd

What is Rolling Mills?

Rolling mills was said to be one of the tools that a jewelers must have. It is a tool that is used to make a sheet or wire from a scrap of gold. It is being used to apply pressure to a metal to flatten it and to make it longer.

A rolling mill, also known as a reduction mill or mill, has a common construction independent of the specific type of rolling being performed:

• Work rolls
• Backup rolls - are intended to provide rigid support required by the working rolls to prevent bending under the rolling load
• Rolling balance system - to ensure that the upper work and back up rolls are maintain in proper position relative to lower rolls
• Roll changing devices - use of an overhead crane and a unit designed to attach to the neck of the roll to be removed from or inserted into the mill.
• Mill protection devices - to ensure that forces applied to the backup roll chocks are not of such a magnitude to fracture the roll necks or damage the mill housing
• Roll cooling and lubrication systems
• Pinions - gears to divide power between the two spindles, rotating them at the same speed but in different directions
• Gearing - to establish desired rolling speed
• Drive motors - rolling narrow foil product to thousands of horsepower
• Electrical controls - constant and variable voltages applied to the motors
• Coilers and uncoilers - to unroll and roll up coils of metal

Slabs are the feed material for hot strip mills or plate mills and blooms are rolled to billets in a billet mill or large sections in astructural mill. The output from a strip mill is coiled and, subsequently, used as the feed for a cold rolling mill or used directly by fabricators. Billets, for re-rolling, are subsequently rolled in either a merchant, bar or rod mill. Merchant or bar mills produce a variety of shaped products such as angles, channels, beams, rounds (long or coiled) and hexagons.

Before using the rolling mill, anneal the metal you'll be working with. Annealing is basically the heating and then cooling (the speed of cooling depends on the metal you're working with; some need to sit until cool, some may be quenched with water or other solutions) of a piece of metal to improve its toughness and to eliminate its potential brittleness. Before working with your metal, make sure that it is clean of contaminants. This can be done by pickling your metal using an acidic solution (which is often heated), neutralizing the acid by dipping the metal in a base solution and then rinsing it in clean water and drying it. Try to keep the oils from your hands off your metal as much as possible as this can cause tiny pits to form.

Place the end of your metal piece into the machine (as close to the middle of the rollers as possible so that the pressure will be even) and tighten the mill down until the rollers are snug (but not tight) on the piece. It should be fairly easy to move the crank. If it is very difficult to roll your piece through, the rollers need to be loosened or you will risk damage to both them and your piece.

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BCaiWa is Technical support at Luoyang Moheman Heavy-duty Machinery Co.Ltd

Ball Mill: Cement Mill

Ball Mill Application:

Cement ball mill is mainly used in grinding of finished products and raw materials in cement production. It's also applied to grind various ore and other grinding materials in metallurgical, chemical, electricity and other industrial and mining enterprises. It can be used to open-circuit grinding, as well as close-circuit grinding system together with separator. Cement mill has a strong adaptability to materials to production. It can be in operation continually and easy to control grinding fitness of production and so on. Ball mill of cement production is suitable to both drying production and wet production. What's more, the operation of grinding and drying can be done simultaneously.


The machine is composed by feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbing process and the drum is equipped with wear-resistant liner, which has good wear-resistance. The machine is with stable and reliable working condition.
Moreover, according to different materials and discharging methods, there are dry ball mills and wet ball mills for choice.

Ball Mill Working Principle:

The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft uniformly. There are ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height and impact and grind the materials. The ground materials are discharged through the discharging board thus the grinding process is finished.

Quality Carbon Structure Steels

GB/T 699-1999 Quality Carbon Structure Steels

Implementation Date: 1999
Chinese Name: Quality Carbon Structure Steels
Issued By:
English Version: Available
File Format: Word
Word Quantity: 4000 words

1. Aspect(s) Covered

This standard regulates size, shape, weight, tolerance, specification,
testing method, inspection rules, package, mark and quality certificate
of hot-rolled or hot-forged quality carbon structure steel.
This standard is applicable to quality carbon structure steel rod whose
diameter or thickness is not greater than 250mm. Through negotiation
between buyers and sellers, quality carbon structure steel rod whose
diameter or thickness is greater than 250mm can also be supplied.
Grades and chemical composition prescribed in this standard are also
applicable to steel ingot and steel billet products.

2. Normative References

The following standards contain provisions which, through reference in
this text, constitute provisions of this standard. All the Standards
stated below are effective at the publication of this Standard. All
standards are subject to revision, and parties to agreements based on
this standard are encouraged to investigate the possibility of applying
the most recent editions of the standards indicated below.

GB/T 222-1984 Method of Sampling Steel for Determination of
Chemical Composition and Permissible Variations for Product Analysis
GB/T224-1987 Determination of Depth of Decarburization of Steel
GB/T 226-1991 Etch Test for Macrostructure and Defect of Steels
GB/T 228-1987 Metallic Materials - Tensile Testing
GB/T 229-1994 Metallic Materials - Charpy Notch Impact Test
GB/T 231-1984 Metallic Materials - Brinell Hardness Test
GB/T 233-1982 Method for Forging Test of Metals
GB/T 702-1986 Hot-rolled Round and Square Steels -
Dimension, Shape, Weight and Tolerance
GB/T 908-1987 Forged Round and Square Steels - Dimension,
Shape, Weight and Tolerance
GB/T 1979-1980 Diagram of a Low Magnification Texture Blemish
Grading of Structural Steel
GB/T 2101-1989 General Requirements of Acceptance, Packaging,
Marking and Certification for Section Steel
GB/T 2975-1998 Steel and Steel Products - Location and
Preparation of Test Pieces for Mechanical Testing
GB/T 4336-1984 Method for Photoelectric Emission Spectroscopic
Analysis of Carbon Steel Medium and Low Alloy Steel
GB/T 6397-1986 Metallic Materials - Test Pieces for Tensile Testing
GB/T 7736-1987 Ultrasonic Inspecting Method for
Macro-structure and Imperfection of Steel
GB/T 10561-1989 Steel - Determination of Content of Non-metallic
Inclusion - Micrographic Method Using Standard Diagrams
GB/T 17616-1998 Unified Numbering System for Designations of
Iron, Steel and Alloy
GB/T 13299-1991 Steel - Determination of Microstructure
GB/T 15711-1995 Steel Products - Method for Etch Test of Tower
Sample
GB/T 17505-1998 Steel and Steel Products - General Technical
Delivery Requirements
YB/T 5148-1993 Metal - Methods for Estimating the Average
Grain Size

Grinding Machine Operator

The Grinding Machine Operator

Abilities:

The Grinding Machine Operator needs the ability to quickly move the hand, the hand together with the arm or the two hands to grasp, manipulate, or assemble objects. The Grinding Machine Operator needs the ability to make precisely coordinated movements of the fingers of one or both hands to grasp, manipulate, or assemble very small objects. The Grinding Machine Operator needs the ability to keep the hand and arm steady while moving the arm or while holding the arm and hand in one position. The Grinding Machine Operator needs the ability quickly and repeatedly adjusts the controls of a machine or a vehicle to exact positions. The Grinding Machine Operator needs the ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem; only recognize there is a problem. The Grinding Machine Operator needs the ability to see details at close range that is within a few feet away from the object. The Grinding Machine Operator needs the ability to quickly and accurately compare similarities and differences among sets of letters, numbers, objects, pictures, or patterns. This ability also includes comparing a presented object with a remembered object. The Grinding Machine Operator needs the ability to concentrate on a task over a period of time without being distracted. The Grinding Machine Operator needs the ability to imagine how something will look after it is moved around or when its parts are moved or rearranged. The Grinding Machine Operator needs the ability to apply general rules to specific problems to produce answers that make sense. The Grinding Machine Operator needs the ability to use either control mechanisms or direct physical activity to operate machines or processes. The Grinding Machine Operator needs the ability to observe, receive, and otherwise obtain information from all relevant sources.

Duties:

The Grinding Machine Operator must dress grinding wheels, according to specifications. The Grinding Machine Operator job function includes monitoring machine operations to determine whether adjustments are necessary; stop machines when problems occur. The Grinding Machine Operator inspects feels, and measure work pieces to ensure that surfaces and dimensions meet specifications. The Grinding Machine Operator sets up and operates grinding or polishing machines to grind metal work pieces such as dies, parts, and tools. The Grinding Machine Operator removes finished work pieces from machines and places them in boxes or on racks; set aside pieces that are defective. The Grinding Machine Operator files or finishes surfaces of work pieces, using prescribed hand tools. The Grinding Machine Operator selects and mounts grinding wheels on machines, according to specifications, using hand tools and applying knowledge of abrasives and grinding procedures. The Grinding Machine Operator performs basic maintenance, such as cleaning and lubricating machine parts. The Grinding Machines Operator removes and replace worn or broken machine parts, using hand tools. The Grinding Machine Operator computes numbers, widths, and angles of cutting tools, micrometers, scales, and gauges, and adjusts tools to produce specified cuts.







Skills:

The Grinding Machine Operator adjusts actions in relation to others' actions. The Grinding Machine Operator conducts tests and inspections of products, services, or processes to evaluate quality or performance. The Grinding Machine Operator watches gauges, dials, or other indicators to make sure a machine is working properly. The Grinding Machine Operator must give full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times. The Grinding Machine Operator determines the kind of tools and equipment needed to do a job. The Grinding Machine Operator understands the implications of new information for both current and future problem solving and decision making. The Grinding Machine Operator selects and uses training methods and procedures appropriate for the situation when learning or teaching new things. The Grinding Machine Operator controls operations of equipment or systems. The Grinding Machine Operator performs routine maintenance on equipment and determines when and what kind of maintenance is needed. The Grinding Machine Operator uses logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.

Steel Rolling Mill Machinery

Steel Rolling Mill Machinery


Here, we will make discussions about Steel Rolling Mill Machinery.


If the temperature of the metal is above than its recrystallization temperature then it is termed as hot rolling process. If the temperature of the metal is below than its recrystallization temperature then it is termed as cool rolling process. In hot rolling mill, a large piece of metal is heated above their temperature and then deformed between rollers. Cold steel rolling mill machinery can be used for all types of heavy mechanical engineering equipments.

Rolling process is one of different types which include flat rolling, foil rolling, ring rolling, roll bending, roll forming, and profile rolling, etc. Flat rolling is a process in which a material having a rectangular cross section is fed between the rollers which results in metal sheets. Float rolling process is used for producing foils. In this process, rolling is done by cluster mill because small thickness requires a small diameter rolls. Ring rolling process is a special type of process that increases the diameter of the ring. Roll bending process produces cylindrical shaped products. Roll forming process is used for producing mechanical parts with long length or heavy quantity. There are many other methods of making metal sheets and other metallic instruments with the help of steel rolling mill machine.

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United States Surface grinding machine technology

   Currently, the United States. Surface grinding machine manufacturing industry in the efficient automation Surface grinding machine, automatic production line, NCSurface grinding machine, FMS, etc. Surface grinding machine technology and industrial production is still a world leader. Mainly in the Midwest and Northeast states, the main consumer customers in the automotive industry, aerospace industry, construction and medical equipment manufacturing.

    United States. Surface grinding machine technology has been able to maintain long-term leader in the world, the Government guidance to strengthen R & D and innovation has played a crucial role.

    United States. aviation industry, automobile industry and the mold manufacturing industry's demand for high-speed Wire edm machine is increasing. Because of environmental reasons, many customers requested Wire edm machine to reduce the use of coolant.

    United States  Surface grinding machine technology has been able to maintain long-term leader in the world, the Government guidance to strengthen R & D and innovation has played a crucial role. Main features:

    First, map out the direction of major research projects, measures, and to provide adequate funding. NCSurface grinding machine such as research and development to provide substantial funding.

    Second, the organization leading the research units and scientific cooperation between enterprises. For example: a new generation of NC system, the R & D, manufacturing by the National Center for Science in collaboration with the U.S. Air Force development; CIM research and development, government organizations, General Motors, Boeing Aircraft Company and the Wire edm machine industrial co-development.

    Third, the new product developed, the organization promoting the use of orders, while accelerating research and further deepened. For example: G & L in 1994, the U.S. company has developed the world's first VARLA4 parallel institutions Wire edm machine, the timely organization of university researchers to analyze and use in the enterprise in order to further improve the technical.


The above situation indicates that technological progress is the impact of industrial development in the United States Wire edm machine main factors. Now electronic, high-speed, precision into the United States Wire edm machine industry to the mainstream of development.

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