Approximate calculation method for machining quotation

Detailed calculation method:

1) First of all, you can ask the other party to provide preliminary process arrangements for key or complex parts, detailing each process, and the time of each process.

2) The processing cost can be calculated based on the hourly cost of equipment required for each process. Specific equipment costs, you can also ask the supplier to, for example,

Ordinary Liga is between ¥60 and 80 per hour (including tax). The general equipment such as milling machines and general vehicles is generally ¥30. . .

3) In proportion to the package transportation, management costs, tooling tools, profits are the price

Of course, the price will have a lot to do with the annual purchase volume and difficulty of the part.

It's easy to understand that a single piece and a lot will cost a lot.

Rough estimate method:

1) For large parts, the volume is larger and the weight is heavier.

The difficulty is general: the processing cost is about 1:1 compared with the raw material cost of the whole part, which is inversely proportional to the purchase amount;

Difficult: The ratio of processing cost to the raw material cost of the entire part is 1.2~1.5:1, which is inversely proportional to the purchase volume;

2) For small and medium-sized pieces

The difficulty is general: the processing cost is about 2~3:1 compared with the raw material cost of the whole part, which is inversely proportional to the purchase amount;

Difficult: The processing cost is approximately 5~10:1 compared with the raw material cost of the whole part, which is inversely proportional to the purchase amount;

Due to the great process flexibility of machining, that is, a part can have a variety of process arrangements, the cost is of course different, but the supplier sometimes quotes a complex process to increase the price, but the actual production Other simple processes are used, so the buyer's own reading of the drawings and knowledge of the parts processing determines your understanding of the cost, so the procurement of mechanical parts requires a comprehensive knowledge of machining.

The cost of machining costs is generally given in terms of working hours!

If you are going to machine a workpiece, first of all the material cost of the other party; then some travel expenses (usually not) for the purchase of the workpiece;

The most important thing is the processing time required for the workpiece you want to machine. The general lathe is 10-20 yuan/hour, and the fitter is about 10-15/hour less; the rest are not enumerated;

If there are no ready-made tools (such as tools, molds), the cost of the purchase is also required to bear part or all of the cost; the final addition is the processing fee you have to pay!

Material costs, machine depreciation, labor costs, management fees, taxes, etc. are basically required. Or material fees, processing fees and taxes, as well as business expenses, transportation costs, budgeting needs a lot of market to have a very thorough understanding, not to climb the game for a few years will completely touch the clue, even my teacher Also often feels! Not paying attention to it!

The problem of the process should include material costs, processing fees (which processing price is different), equipment depreciation, workers' wages, management fees, taxes, etc. The main method is to first determine the process, that is, the processing method, and then calculate the working hours according to the process, and determine the basic processing cost of the individual parts by working hours, plus other expenses. The process is a very complicated science. A part uses different processes, the price is different, the basic price of each type of processing time is actually fixed. The working price of various types of work is not fixed. It will be based on the difficulty of the workpiece, the size of the equipment, and the performance. The difference is different, of course, the key is to see how much you are, but in general it has a basic price, floating between the basic prices.

1. Basic price of the car: 20-40 The specifics are determined according to the actual situation, like small pieces, the simple working hours are less than 20 yuan; sometimes even only 10 yuan, such as some large pulleys, the processing allowance is large, the boss only earns The cost of cast iron powder is enough; sometimes if the workpiece is large, the general market can not be processed can be high, two or three times, others can not.

2. The basic price of grinding: 25-45

3. Milling basic price: 25-45

4. Basic price of drilling: 15-35

5. Planing basic price: 15-35

6. Line cutting basic price: 3-4/900 square millimeters

7. Basic price of electric spark: 10-40, single piece is generally 50/piece (less than 1 hour)

8.NC basic price: 2-4 times more expensive than ordinary

9. Engraving: Generally it is a single piece. 50-500/piece is of course a sentence. The specific price of the product. The above price is only for reference. If you have any experience, I hope everyone can say it, everyone will communicate.

No. Equipment Name Model Processing Range Processing Cost (yuan/hour)

1 Lathe C616 Φ320×750~1000 11

2 lathe C6140 Φ400×1000~2000 13

3 Lathe J1-MAZAK Φ460×1000~2000 15

4 Lathe C6150 Φ460×1000~2000 15

5 lathe C630 Φ630×1000~2000 21

6 lathe C650 Φ800×1500~5000 30

7 Vertical Lathe C5116A Φ1600 28

8 Radial Drilling Machine Z3050 Φ50~Φ63 16

9 Radial Drilling Machine Z3080 Φ80 20

10 Vertical Drilling Machine Z5140A Φ32~Φ40 12

11 Horizontal trampoline T68 1000×1000 26

12 horizontal trampoline T611 1000×1000 30

13 vertical boring machine T4163 630×110056

14 horizontal trampoline T6111A 1200×1200 36

15 universal garden grinding machine M1420 Φ125~220×350~1000 15

16 universal garden grinding machine M1432A M9025×500~1000 19

17 universal garden grinding machine M1432B Φ315~320×1500~3000 26

18 universal garden grinding machine M1331A Φ315~320×1500~3000 26

19 universal outer grinding machine M1450 Φ500×1500~2000 28

20 Precision Universal External Grinder MG1432 Φ320×1000~2000 32

21 Inner garden grinding machine MG1432 Φ12~Φ100×130 13

22 Surface Grinder M7120 200×630~650 16

23 Surface Grinder M7130 300×1000 21

24 Surface Grinder M7150 500×2000 40

25 rail grinding machine M50100 1000×6000 28

26 spline grinding machine M8612A Φ120×1800 28

27 thread grinding machine Y7520W Φ200×500 20

28 Gear Grinding Machine Y4632A Φ320×6M 30

29 universal tool grinding machine M5MCΦ200×500 13

30 universal tool grinding machine MW6020 Φ200×500 13

31 universal tool grinding machine M9025Φ200×650 16

32 universal tool grinding machine M6025H Φ250×650 16

33 universal tool grinding machine M6425Φ250×650 16

34 broach grinding machine M6110D Φ100×1500~1700 16

35 Hobbing machine YM3150E Φ500×8M 22

36 rod rack YM5150B Φ500×8M 18

37 Vertical Milling Machine X5030A Φ300×1120 16

38 Vertical Milling Machine X52K Φ320×1250 18

39 Vertical Milling Machine XA5032 Φ320×1250 18

40 horizontal milling machine X63W Φ400×1600 24

41 ram milling machine XS5646/1 Φ425×2000 28

42 head planer B665 650×800 14

43 head planer B650 650×800 11

44 Hydraulic Bullhead Planer BY60100900~1000 16

45 Hydraulic Bullhead Planer B690 900~1000 16

46 Planer Planer B2016A 900~100028

47 Planer Planer B2020A 2000~6000 50

48 rod bed B5032 200~320 12

49 broaching machine L6140 40T 15

50 lined fitter Φ200×650 15

51 Assembly fitter Φ200×650 30

52 mold fitter Φ200×650 30

53 Machining Center Φ200×650 80

54 wire cutting Φ200×6509 55

55 welding knife Φ200×650 7

Due to different regions and different times, different manufacturers have different needs, different suppliers, different suppliers, different quantities, and many different prices. The prices are also different and there is no certain. However, generally according to the processing time billing, give a reference as follows (the number is only for reference, the regional, time difference is really large): This information does not include electrical processing, such as wire cutting, generally based on the area to be processed. "Regulations on the Charges for General Machined Parts"

First, the working hour pricing method: Z25 drilling machine, CA6140 lathe planer bed sawing machine to charge 15 yuan per hour. Vertical, horizontal milling, wire cutting, large lathe, gantry milling at 20 yuan per hour. The general maintenance of the fitter is charged at 15 yuan per hour. The chronograph unit is qualified from the start of the processing to the completion of the processing.

Second, according to the parts, quantity, accuracy requirements for charging methods:

1. Drilling processing general materials

The diameter-to-diameter ratio is not more than 2.5 times the diameter below 25mm, the bit diameter is *0.05, the diameter of the diameter is 25-60, the bit diameter is *0.12 (the minimum hole is not less than 0.5 yuan), the general material charge base price with a depth-to-diameter ratio greater than 2.5, the depth-to-diameter ratio* 0.4 Charges for aperture accuracy less than 0.1MM or for center distance requirements less than 0.1MM by base price *5 Charges for tapping charges according to tap diameter *0.2 (for cast iron as standard, steel for other *1.2) During batch processing Charged at the standard base price of *0.2-0.8 (according to batch size and ease of processing)

2, lathe processing class general precision optical axis processing

Length to diameter ratio is not large with 10 according to the workpiece blank size *0.2 charge (bottom 5 yuan) length to diameter ratio greater than 10 according to the general optical axis base price * length to diameter ratio * 0.15 accuracy requirements within 0.05MM or required For the taper, the general step axis (fan shaft, pump shaft, reducer shaft, grinding wheel shaft, motor shaft, main shaft, etc.) is charged at the base price of the general optical axis*2. The base axis of the general precision optical axis is processed *2, if there is a stepped shaft, if there is a taper, Internal and external ribbing, according to the general accuracy of the optical axis processing base price * 3 charge general purpose screw according to the general accuracy of the optical axis processing base price * 4 charge general flange type parts charging standard according to material diameter * 0.07, diameter greater than 430MM by material diameter *0.12 charged. Generally round nut parts are charged according to the diameter *0.25 (including materials). General trapezoidal, triangular nut parts by diameter *0.3 (without material) General bushing parts (diameter less than 100 diameter ratio less than 2) according to material outer diameter * 0.2 The length-to-length ratio of the diameter-to-length ratio is more than 2, and the base price is *0.6. Generally, the wear of the bearing table type parts is less than 2 mm, and the diameter is less than 40 mm. Each width is less than 25 mm. Each of the 5 yuan requires a center frame or a base price of more than 1.7 meters. *2 charged. The diameter is greater than 40MM and is charged by the diameter *0.2.

3, milling machine processing class general keyway processing

(The aspect ratio is less than 10) The button slot width *0.5 is charged (minimum 5 yuan). The aspect ratio of more than 10 is charged by the aspect ratio * base price * 0.1. If there is a strict position requirement, it will be charged at the base price *2. Material processing with a hardness greater than HRC40 is charged at a base price of *2. Generally, spline processing (length to diameter ratio less than 5) is charged according to the outer diameter of the spline shaft *0.8 (minimum 15 yuan). The general gear processing is charged according to the modulus * teeth * 0.5 yuan. The worm gear is charged at a base of *1.2. Helical gears, bevel gears, and displacement gears are charged at base price*2. Generally, the plane processing class is charged at 1.5 yuan per square centimeter (minimum 5 yuan). Generally, the pupil processing is charged according to the hole diameter *0.25.

4, band saw processing general round steel, thick-walled pipe, square steel cut, calculated according to 5 yuan per square centimeter (minimum 5 yuan) general steel plate cutting, slitting, opening angle of 10 yuan per square centimeter (minimum 10 yuan).

5, wire cutting processing general parts according to the cut area (square millimeters) * 0.008 yuan. The parts that need to be threaded will be increased by 5 yuan for each thread.

6, electric welding and gas cutting and plasma cutting ordinary welding rod diameter of 3.2 yuan each, TH506 welding castings each 3 yuan. Gas cutting processing, according to the thickness of the iron plate MM * cutting length M calculation of plasma cutting stainless steel, according to the gas cutting base price * 3, cutting carbon steel according to the gas cutting base price * 2 charge.

7. For special expedited parts and overtime parts, the special expedited items are charged according to the standard base price*2: the first time is to repair or manufacture emergency parts for a specific customer. Overtime parts are parts that must be manufactured continuously beyond normal working hours. Optical tool curve grinding processing fee 60 yuan / hour 200 lathe, 20 yuan / hour 300 or more lathe 30 yuan / hour milling machine 20 yuan / hour drilling 15 yuan / hour trampoline 35 yuan / hour grinding machine 30 yuan / hour insertion bed 15 yuan / hour Bull head planer 20~25 yuan/hour gantry planing, milling 30 yuan/time rolling machine (rolling steel plate thickness below 20) 60 yuan/hour C620.C6140 basic 20 yuan one hour 30 lathe one hour 30 yuan vertical car\50 Lathe hour 60 yuan rocker drill one hour 20 yuan T68 trampoline one hour 30 yuan cattle planer \ small vertical milling horizontal milling 20 yuan one hour gantry milling gantry plane 60 yuan an hour 400 flat and one meter below the outer circle of a bed Hours 20 yuan three meters outside one hour 60 yuan processing center 80 yuan an hour (number of milling number of cars count) welding gas cutting basic calculations, it is not convenient to calculate the one-hour 30 yuan fitter assembly one hour 20 yuan.

1. Annual output (determined the scale of investment)

2. Plant and land allocation

3. Welding station number and pipeline depreciation rate (pipeline allocation)

4. Number of welding equipment and depreciation rate (equipment input and apportionment)

5. Welding consumables costs

6. Welding fixture and depreciation rate (work fixture input and apportionment)

7. Wages (including wages, bonuses, work meals, transportation expenses, medical funds, unemployment funds, pension funds, housing provident fund and personal adjustment tax, etc.) and working hours utilization of production workers, technicians, management personnel

8. Energy consumption and environmental cost input and apportionment

9. Daily maintenance costs of welding equipment, fixtures and assembly lines

10. Cost sharing for scrapping and rework

11. Product development cost sharing

12. Communication fee sharing

13. Profitability

14. Various tax rates

In general, it includes the above aspects, and there may be many omissions.