how we estimate the machining cost, can some one tell with example?
350925
The best way is to measure it in a machine shop.  I've measured my time in machining and found there are two important numbers to know: 1) how long it takes to remove a cubic cm of material, and 2) how long it takes to clean up and setup for the next machining operation.  \n\nThe first number (material removal rate) is surprisingly small - it takes longer than you might think to remove a cubic cm of material (my range in tool steel runs 0.1-1 cu. inch/hour; less in softer materials).\n\nThe second number may surprise you also - it takes hours to break down, clean up, and setup for the next machining job.  Eventually you will develop a rules for particular jobs, for example, to put a "slide" in a mold base takes about 40 hours (just to cut the slide, not including the cavity pins).\n\nIf you are in production, such as screw machines, the second number is less significant because you can distribute the cost over the volume of the production.\n\nTo simplify: the most efficient typical cutting tool in terms of material removal is the lathe, followed by the drill, then milling, then fine machining, then finish grinding.  To the extent you can use the more efficient tools to remove material, the quicker the work can be done.  The bigger and more robust machine tools can remove more cubic cm/hr, but generally you are stuck with the tools you have.\n\nThere are straightforward calculations for surface feet per minute machining speeds depending on tools and metal to be cut, but this information is not really conclusive in estimating machining costs because setup and finish machining take so much longer than the material removal rate would indicate.  Estimate finish machining cu. cm/hr to be 10 times longer than rough machining unless you have a reason to believe it is shorter.\n\nThe way to calculate the total machining cost is by using a worksheet with all the operations step-by-step, including setup & breakdown, with estimates for time at each step.  For the machining steps, if you have no estimate, use about 0.5 cubic cm/hour unless you have reason to think more can be removed.  If you think this is too slow, run a test first because it takes longer than you might think.  \n\nI would say to ask a machinist, but they won't tell you as they guard this information closely, because it is the core of their business.  This is why it is good if you keep track of how long each machining operation takes when you do it.\n\nOne machinist kept extremely detailed records on networked computers on the shop floor how long each operation took, so he knew exactly how long a job would take.  His competition didn't; he never took a job he would lose money on, while his competition did.  He is still in business - they are not.\n\nIn short, it is best to confirm/develop yourself with your own tools the actual times needed to create your machining costs - there is no shortcut.
16989
Here are several links that may help:\n\nhttp://www.hometips.com/articles/cabreface.html\nhttp://www.thisoldhouse.com/toh/knowhow/kitchen/article/0,16417,220605,00.html\nhttp://doityourself.com/cabinetry/kitchencabinets.htm\n\nI would recommend estimating out the materials and your time, but not giving some one a "hard" estimate, but rather a time and materials estimate.
966947
Calculating money, age, time, products that are manufactured, statistics, etc.
747703
You could consider an infrared surface scanning thermometer.  I.m not sure how accurate the readings would be for the temperature at the cutting area, when the rest of the tool has not reached that temperature.
1061807
Home Depot has a CD available, probably at most stores in the contractor dept., that has a load of valuable information for estimation of jobs, parts pricing via the internet, etc.   Should be free fo the asking.
934154
Okay here goes.........Well, firstly I am a Quality Engineer and work with the concept of RFT, (right first time). The idea is, and lets use the example of a mould tool producing a plastic part, the setter or technician sets up the tool to run, the hopper filler supplies the material to the press, and an operator is working at the press to pack the product. Each of these people are being paid to do their part of the process, also taking into account the electricity needed to run the press, the cost of the material and so on...... Now, if during that run or even worse at the end of the run, it turns out that the parts produced were rejects and could not be used, the whole process has to be repeated. So, each person in the loop has to be paid again to do a job they have already done. More electricity is required, more material, all this additional cost to produce parts that should of been right in the first place. Plus, the parts can only be sold once to the customer, so this money has been lost. You do this enough times and it won't be long before you are not making any profit on the parts. \n\nThe ideal process producing RFT parts, is a tool that can be put in the press and left to run, if the tool and process is capable the highest amount of profit will be gained from that part. No scarp, no wastage of material, no downtime, and lastly, if the tool has to repeat its run to produce good parts, the next tool waiting to go in the press has to be postponed, so the knock on effect of making scrap costs the company money in all sorts of ways. This can be looked at, as the domino effect.\n\nRFT is hard to maintain all of the time, but top companies like Ford, Toyota and Nissan promote this concept to their suppliers, but as a supplier myself, it is easier said than done.\n\nSORRY SO LONG WINDED !!
1030351
there should be a column of coefficients. estimated demand is equal to sum of products of those coefficients and corresponding variables, plus the constant.\n\nI.e. demand = constant +var1*coef1+var2*coef2+...
411705
I have heard $30, but there is a large range within that number.  The article below mentions $30 also but only as an assumed CPM.
672926
ask the suppliers to give you this information if they have not done so already.\nThe manufacturers should/must have and be able to provide this information.
354557
refer to this notes \n\nhttp://www.futureaccountant.com/process-costing/
619073
Might I suggest a book on cost estimating...
416645
try this site \n\nhttp://www.futureaccountant.com/process-costing/
577525
Want to know real numbers?  :) Go to Monster.com and see how much they charge adn you will have real hard numbers that industry charges.\n\nRival
130248
It will depend upon the facilities you currently have, and their output.  If your facility produced 10 million units 150,000 would only be a small amount and may not cause much increase in your costs.  If your manufacturing equipment runs on oil or some kind of support requirements that are increased by the number of units this could increase with 150,000 additional units.  Now if you are currently producing 10,000 units and your facilities have a capacity of 50,000 you will need to purchase new manufacturing equipment to support the additional demand, but if your costs for your equipment are independent of the number of units you produce and the quantity you wish to produce can be supported by your current equipment your fixed costs would not increase, and your fixed costs per unit would decrease. \n\nVariable costs which are not included in your fixed manufacturing overhead cost will also more than likely increase based on your production since you will need more staff to box or ship your new items.
752401
Cost of goods sold is defined as the actual cost that is directly incurred by manufacturing the good.\n\nThus, take:\nIncoming inventory + cost of goods created - ending inventory. The Manufacturing overhead is indirect, and is thus not counted.\n\n165,700 + 689,200 - 194,100 = $660,800 (solution!)
227490
Depends on how much it costs to build it!
1039413
A) Here is what materials, labor, and machinery operations cost.\nB) Here is money I received for (widget) production.\n   B - A = funds from operations.