How Does the CNC Precision Machining Factory Quote? How to Calculate the Cost?

 

 

 

Material cost is a certain main difference. The main difference lies in the different labor costs, transportation costs, consumption costs and taxes of each company. So how do these CNC machining factories calculate?

 

The following is a part of the data compiled by VMT for reference (due to the differences in the calculation method due to the different prices in different places)

 

 

 

 

Detailed calculation method of precision CNC machining factory:

 

 

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-consuming of each process.

 

2) The cost of CNC machining can be calculated according to the hourly cost of equipment required for each process. You can also ask the supplier for the specific equipment cost. For example: ordinary vertical plus is between ￥60~80 per hour (tax included); ordinary equipment such as milling machine and general car is generally ￥30.

 

3), in proportion to the packaging and transportation, management costs, tooling tools, profit is the price. Of course, the price will have a lot to do with the annual purchase volume and difficulty of the parts to a certain extent. It is also easy to understand that there will be a lot of price difference between a single piece and a batch.

 

 

 

 

Rough estimation method of CNC machining:

 

 

 

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

 

 

The difficulty is average: the CNC machining cost is about 60 yuan/hour with the entire optical tool curve grinding cost.

200 lathes, 20 yuan/hour,

30 yuan/hour for a lathe above 300,

Milling machine 20 yuan/hour, drilling 15 yuan/hour,

Boring machine 35 yuan / hour,

Grinder 30 yuan/hour,

Slotting bed 15 yuan/hour,

Bull head planer 20~25 yuan / hour,

Longmen planing and milling 30 yuan / hour,

Rolling machine (rolling steel plate thickness below 20) 60 yuan / hour,

C620.C6140 is basically 20 yuan an hour,

30 lathes are 30 yuan an hour,

Liche 50 lathes cost 60 yuan an hour,

Rocker drill is 20 yuan an hour,

T68 boring machine 30 yuan per hour,

The ratio of the raw material cost of the parts is 1:1, and this ratio is inversely proportional to the purchase volume;

More difficult: The ratio of CNC machining cost to the raw material cost of the entire part is about 1.2~1.5:1, which is inversely proportional to the purchase amount;

 

 

 

 

 

 

2) For small and medium pieces

 

 

The difficulty is average: the ratio of CNC machining cost to the raw material cost of the entire part is 2~3:1, which is inversely proportional to the purchase amount;

 

More difficult: The ratio of CNC machining cost to the raw material cost of the entire part is 5~10:1, which is inversely proportional to the purchase volume;

Due to the great process flexibility of CNC machining, that is, a part can have many kinds of process arrangements, so the cost is of course different, but CNC machining suppliers sometimes give you a complex process to increase the price when quoting, and In actual production, other simple processes will be used, so the purchaser's own reading of drawings and knowledge of parts processing will determine your grasp of the cost. Therefore, the procurement of CNC parts requires more comprehensive knowledge of CNC machining.

 

The composition of CNC machining costs is generally given according to the working hours!

 

If you want to process a workpiece, the first is the material cost of the other party; then some travel expenses for purchasing the workpiece (generally none);

 

The most important thing is the machining time required for the workpiece you want to CNC process. Generally, the lathe is 10-20 yuan/hour, and the fitter is a little less about 10-15/hour; the rest are not listed;

 

If there are no ready-made tools (such as knives, molds), you need to bear part or all of the purchase cost; the final addition is the CNC machining cost you have to pay!

 

Material costs, machine depreciation, labor costs, management fees, taxes, etc. are basically required. Or material costs, processing costs and taxes, as well as business costs, transportation costs, and budgeting requires a thorough understanding of the market. Often feel emotional! Don't pay attention at all!

 

Process problems should include material costs, processing costs (the processing price used is different), equipment depreciation costs, worker wages, management fees, taxes, etc. It is mainly to first determine the process, that is, the processing method, and then calculate the man-hours according to the process, and determine the basic processing cost of a single part by the man-hours, plus other costs. Craftsmanship is a very complex knowledge. A part adopts different craftsmanship, and the price is different.

 

 

 

 

 

 

 

In fact, the price of labor hours for various types of work is not fixed. It will vary according to the difficulty of the workpiece, the size of the equipment, and the performance. Of course, the key depends on your quantity, but generally speaking, it has a basic price, floating between base prices:

 

1. Basic price of the car: 20-40

 

The specifics depend on the actual situation. For small pieces, the simple working hours are less than 20 yuan; sometimes it is even only 10 yuan.

For example, for some large pulleys, the CNC machining allowance is large, and the boss only earns the money of cast iron powder;

Sometimes if the workpiece is large, it can be higher than the one that cannot be processed on the market, two or three times, and no one else can do it.

 

2. Basic price of grinding: 25-45

 

3. Basic price of milling: 25-45

 

4. Basic price of drill: 15-35

 

5. The basic price of planing: 15-35

 

6. Basic price of wire cutting: 3-4/900 square millimeters

 

7. Basic price of EDM: 10-40, generally 50/piece for a single piece (less than 1 hour)

 

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

 

9. Engraving: generally single piece, 50-500/piece

 

The above prices are for reference only. If you have any experience, I hope you can also share it with us.

 

 

 

With the basic price of processing hours for each type of work

 

 

Serial number, 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 boring machine T68 1000×1000 26

12. Horizontal boring machine T611 1000×1000 30

13. Vertical boring machine T4163 630×110056

14. Horizontal boring machine T6111A 1200×1200 36

15. Universal external garden grinder M1420 Φ125~220×350~1000 15

16. Universal external garden grinder M1432A M9025×500~1000 19

17. Universal external garden grinder M1432B Φ315~320×1500~3000 26

18. Universal external garden grinder M1331A Φ315~320×1500~3000 26

19. Universal external garden grinder M1450 Φ500×1500~2000 28

20. Precision Universal Outer Grinder MG1432 Φ320×1000~2000 32

21. Inner garden grinder 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. Guide rail grinder M50100 1000×6000 28

26. Spline grinder M8612A Φ120×1800 28

27. Thread grinder Y7520W Φ200×500 20

28. Gear grinder Y4632A Φ320×6M 30

29. Universal tool grinder M5MCΦ200×500 13

30. Universal tool grinder MW6020 Φ200×500 13

31. Universal tool grinder M9025Φ200×650 16

32. Universal tool grinder M6025H Φ250×650 16

33. Universal tool grinder M6425Φ250×650 16

34. Broach grinder M6110D Φ100×1500~1700 16

35. Gear 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. Bull head planer B665 650×800 14

43. Planer B650 650×800 11

44. Hydraulic planer BY60100900~1000 16

45. Hydraulic planer B690 900~1000 16

46. ??Gantry planer B2016A 900~100028

47. Gantry planer B2020A 2000~6000 50

48. Rod bed B5032 200~320 12

49. Broaching machine L6140 40T 15

50. Marking 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, different times, different CNC processing factories, different buyers, different suppliers, different quantities, there are many differences, and the prices are also very different, and there is no certainty. However, it is generally charged according to the processing hours, and a reference is as follows (the figures are only for reference, and the differences between regions and times are very large).

 

 

 

 

This information does not include electrical processing, such as wire cutting, which is generally charged based on the area to be processed. "Charge Standard for General Machining Parts"

 

 

The method of calculating the price by working hours: Z25 drilling machine, CA6140 lathe, planer, slotting machine and sawing machine are charged at 15 yuan per hour. Vertical and horizontal milling, wire cutting, large lathe, and gantry milling are charged at 20 yuan per hour. The general maintenance of fitters is charged at 15 yuan per hour. The timing unit starts from taking over the processing and ends when the processing is completed and the acceptance is passed.

 

 

The method of charging according to the parts, quantity and accuracy requirements:

 

 

 

1. Drilling general materials

 

 

If the depth-diameter ratio is not more than 2.5 times, the diameter of the drill is less than 25MM, and the diameter of the drill is 0.05. If the diameter is 25-60, the diameter of the drill is 0.12.

 

For general materials with a depth-to-diameter ratio greater than 2.5, the base price * depth-to-diameter ratio * 0.4 is charged. For the aperture accuracy requirement less than 0.1MM or the center distance requirement less than 0.1MM, the charge is based on the base price * 5

 

The charging standard for tapping is charged according to the tap diameter * 0.2 (for cast iron as the standard, for steel parts * 1.2), and for batch processing at the standard base price * 0.2-0.8 (according to the batch size and processing difficulty)

 

 

 

 

2. General precision optical axis machining for lathe processing

 

 

If the aspect ratio is not larger than 10, it will be charged according to the blank size of the workpiece * 0.2 (Z bottom 5 yuan)

 

If the aspect ratio is greater than 10, it will be charged according to the general optical axis base price * length-diameter ratio number * 0.15, and the accuracy requirement is within 0.05MM or the taper is required to be charged at the general optical axis base price * 2

 

General stepped shafts (fan shafts, pump shafts, reducer shafts, grinding wheel shafts, motor shafts, spindles, etc.) are charged at the base price for general-precision optical shaft processing*2. If the stepped shaft has tapers, internal and external ribbing, it will be processed according to general-precision optical shafts Base price*3 charged.

 

The general-purpose lead screw is charged at the base price*4 for general-precision optical axis processing.

 

Generally, flange parts are charged according to the material diameter * 0.07, and those with a diameter greater than 430MM are charged according to the material diameter * 0.12.

 

General round nut CNC parts are charged according to diameter * 0.25 (including materials)

 

General trapezoidal, triangular nut CNC parts according to diameter * 0.3 (excluding materials)

 

General shaft sleeve CNC parts (diameter less than 100 diameter to length ratio less than 2) are charged according to the material outer diameter * 0.2, and the diameter to length ratio exceeds 2 according to the diameter to length ratio * base price * 0.6.

 

Generally, the wear amount of the parts of the bearing platform is less than 2MM, the diameter is less than 40MM and the width is less than 25MM, each 5 yuan, needs to be placed on the center frame, or the base price*2 is charged for the length greater than 1.7 meters. If the diameter is larger than 40MM, it will be charged as diameter*0.2.

 

 

 

 

3. CNC milling machine processing general keyway processing

 

(Aspect ratio is less than 10) key slot width * 0.5 charge (Z lower 5 yuan). If the aspect ratio exceeds 10, it will be charged according to the aspect ratio * base price * 0.1.

 

If there are strict location requirements, the base price*2 will be charged.

 

The processing of materials with hardness greater than HRC40 will be charged at the base price*2.

 

General spline processing (length-diameter ratio less than 5) is charged according to the outer diameter of the spline shaft * 0.8 (Z is 15 yuan lower)

 

Generally, the processing of gears is charged according to the module * number of teeth * 0.5 yuan. The worm gear is charged according to the base*1.2. Helical gears, bevel gears, and displacement gears are charged at the base price*2.

 

General plane processing is charged at 1.5 yuan per square decimeter (Z is 5 yuan lower)

 

Generally, the boring processing is charged according to the hole diameter * 0.25.

 

 

4. For general round steel, thick-walled pipe and square steel cut off by band saw processing, it is calculated at 5 yuan per square decimeter (Z is 5 yuan lower). $10 less).

 

5. The general parts of wire cutting are charged according to the cutting area (square millimeter) * 0.008 yuan. The parts that need to be threaded will be charged 5 yuan per thread hole.

 

6. Electric welding, gas cutting and plasma cutting are 1 yuan each for ordinary electrodes with a diameter of 3.2, and each TH506 welding casting is 3 yuan. For gas cutting processing, the plasma cutting stainless steel is calculated according to the iron plate thickness MM * cutting length M, and the gas cutting base price * 3 is charged, and the cutting carbon steel is charged at the gas cutting base price * 2.

 

7. Regarding special expedited parts and overtime parts, the special expedited parts charged at the standard base price*2 are defined as: the first time to arrange emergency parts for maintenance or CNC machining for a specific customer. Overtime parts are parts that must be continuously manufactured beyond normal working hours.

 

 

 

Optical tool curve grinding processing fee 60 yuan / hour,

 

200 lathes, 20 yuan/hour,

 

30 yuan/hour for a lathe above 300,

 

Milling machine 20 yuan/hour, drilling 15 yuan/hour,

 

Boring machine 35 yuan / hour,

 

Grinder 30 yuan/hour,

 

Slotting bed 15 yuan/hour,

 

Bull head planer 20~25 yuan / hour,

 

Longmen planing and milling 30 yuan / hour,

 

Rolling machine (rolling steel plate thickness below 20) 60 yuan / hour,

 

C620.C6140 is basically 20 yuan an hour,

 

30 lathes are 30 yuan an hour,

 

Liche 50 lathes cost 60 yuan an hour,

 

Rocker drill is 20 yuan an hour,

 

T68 boring machine 30 yuan per hour,

 

Small vertical milling and horizontal milling for cattle planing is 20 yuan an hour,

 

Gantry milling and gantry planing is 60 yuan an hour,

 

400 square meters and 20 yuan per hour for a bed with a diameter of less than one meter,

 

It is 60 yuan an hour three meters away,

 

The machining center is 80 yuan per hour (the same as the number of milling and turning),

 

Electric welding and gas cutting is basically calculated by pieces, and it is not convenient to calculate at 30 yuan per hour.

The fitter assembles 20 yuan an hour.

 

 

In addition, the labor payment is also related to the number of outsourced processing. The finishing working hours are as follows:

 

Fine grinding tolerance 0.005 40 yuan / hour,

Spark tolerance 0.01 80 yuan / hour,

Slow wire tolerance 0.005 100 yuan / hour,

The tolerance of the light warp grinding is 0.003 180 yuan/hour.

 

 

1. Annual output (determines the scale of input)

 

2. Apportionment of plant and land input 3. Number of welding stations and depreciation rate of assembly line (apportionment of assembly line)

 

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

 

5. Welding consumables costs

 

6. Welding fixtures and depreciation rate (tool input and apportionment)

 

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

 

8. Input and allocation of energy consumption and environmental protection costs

 

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

 

10. Expenses for scrapping and repairing

 

11. Product development cost allocation

 

12. Communication fee sharing

 

13. Profitability

 

14. Various tax rates

 

 

 

It generally includes the above aspects, and there may be many omissions!

 

 

The above is just the basic quotation of VMT CNC machining factory. For the specific quotation, you need to contact us and send us the drawings. Our project will give you a quotation and give you a satisfactory answer within 24 hours. Welcome to customize the CNC machining parts with drawings and samples.