CNC Knowledge: Complete work on machine treatment technology!

1. What are the three part backrest methods?
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2. What are the process systems? {Machine-tool, work room, lighting, tool}

3. The composition of the mechanical processing process? {Ruguy treatment, semi-precision treatment, precision treatment, super fine treatment}

4. How to classify the reference? {1. {1.

5. What are the original errors that appear during treatment? {Principles Error · Positioning error · Adjustment error · Knife error · Selection error • Machine rotation error to the machine tool · Machine guide error · Machine transmission error -Suttail the deformation errors of the system caused by the cause ·}

6. The impact of the rigidity of the process system on the accuracy of the treatment (deformation of machine tools, room deformation)? {1.

7. What is the guidance error and the rotation error of the pin-tooling guide? {1.

8. What is the phenomenon of “reflection of errors”? What is the error screening coefficient? What are the measures to reduce errors? {Due to changes in the deformation of the process system error, the approximate error part is reflected in parts of the part: Increasing the number of times the number of knives, increasing the rigidity of the process system, Reduce the amount of flow, increase empty accuracy}

9. Analysis of the error of transmission error of the machine tool? Measures to reduce the transmission error of the transmission chain? {Error analysis: that is to say using the angle error of the final component of the transmission chain to measure the measurements: 1. The less the number of transmission chains is short, the more the chain of transmission is short and the smaller the Δφ ratio, the transmission ratio of the first and the last ends, 3. Due to the most impact of the error of the medium and final parts of the training part, it should also be specify that possible 4. Use a correction device}

10. How to classify the processing error? What errors are a constant value error? What errors are the error of the variable value system? What errors are random errors
{System error: (System value system Error Error Variable system error) Random error error Extremely error: machining error, machine tool, tool manufacturing error, constraint deformation of the process system , etc. Articles wear; Machine tool, etc. The thermal deformation error before thermal balance is a random error: the copy of the approximate error, the positioning error, the step error, the multiple adjustment errors, the deformation error caused by the residual constraint}}

11. What are the means to ensure and improve the precision of treatment? {1. }

12. What is the geometric appearance of the treatment surface? {Geometric roughness, surface wave motif, texture direction, surface defect}

13. What are the physical and chemical properties of the surface layer material? {1.

14. Try to analyze the factors that affect the roughness of the cutting surface of the cut? {The rough value consists of the height of the cut residual area: the main factors of the residual cutting area: the radius of the tip of the main corner radion of the partial angle of the angle.

15. Try to analyze the factors that affect the roughness of the grinding treatment surface? {1.

16. Try to analyze the cold factors that affect the surface of the cutting treatment? {The effect of the influence of the cutting of the knife cut of the geometric shape of the treatment material}

17. What is the grinding of fire burns? What is the grinding and caliber of burns? What is the grinding and receipt of burns? {Fire: If the temperature of the grinding area does not exceed the temperature of the changing steel of the soaking steel, but it has exceeded the processing temperature of the martensite. The cooling liquid, the surface metal will appear to be secondary off the powerful fabric, which is higher than the companion of the companion. The temperature of the phase change and if the grinding process is the coolant, the surface metal will appear from the fabric and the hardness of the surface metal will be strongly sharp.

18. Prevention and treatment of mechanical processing vibrations {eliminate or weaken the conditions of mechanical treatment vibration; Improve the stability of the dynamic characteristics of the process system to improve the stability of the process system.

19. Briefly describe the main differences and opportunities for applying the mechanical processing process, process card and process card card. {Process process Process card: Card of technology for processing production machines to one part adopted by ordinary processing methods: production card of lots production: large quantities of types of production are strictly required, meticulous organizational work}

* 20. Essence principles? {Coarse benchmark: 1. Make sure the principles of mutual position requirements; Used several times in rough bases: the reference principle; 2. The principle of the unified reference;

21. What are the principles of the craft sequence? {1.

22. How to divide the treatment step? What are the advantages of the Division of the Treatment Stage?
{Treatment step Division: 1. Roaring treatment step · SEMI-PRECISION TRAINING Step · Precision treatment step · Precision light treatment step can ensure enough time to eliminate thermal deformation and eliminate stress residual generated by approximate treatment, and improve the accuracy of subsequent treatment. In addition, when the rough turns out to be defective during the rough treatment phase, it is not necessary to process the next treatment step to avoid waste. In addition, you can use reasonable equipment. Super precision treatment, which guarantees that the quality of the product of the warranty pair is very important to improve the level of crafts. }

23. What are the factors of influence of the process? {1.

24. What is the composition of working hours? {T quota = t single time + t

25. What are the increasing productivity processes {1.

26. What are the main content of the rules of the assembly process? {1. Inspection method and inspection tools; 5. Determine the method of transporting assembly parts and equipment and required tools.

27. What should be considered for the process of assembling the structure of the machine? {1.

28. What is the precision of the general assembly? {1.

29. What are the research problems of the assembly size chain? {1. The chain must be alleged in different directions}

30. What are the means to ensure the accuracy of the assembly? What is the application of various methods? {1.

31. The composition and function of the luminaire of the tool-machine? {The machine luminaire is a device installed on the tooltip. . Workers’ work intensity to ensure production safety.}

32. How to classify the scope of the use of the lighting? Ot

33. The room is located on an airplane. And analyze the degree of freedom. {The Piece Institute is located with an airplane.

34. The room is located in a cylindrical hole. And analyze the degree of freedom. {The part is positioned with cylindrical holes. The positioning element commonly used at 1 heart shaft 2. Positioning sales}

35. The part is located on the surface of the outer circle. And analyze the degree of freedom. {The part is located on the surface of the external circular surface. The positioning element commonly used has v} blocks

36. The part is positioned with sales to a single factor “. {1.

37. What are the two aspects of the positioning error? What are the means to calculate the positioning error?
{Positioning error of two aspects. of the room process does not overlap.

38. Basic requirements for the design of the folder system. {1. The tightening device must be practical, effort and safe. 4. The complexity and degree of automation of the tightening device must be compatible with the production batch and the production method. The structural design must be simple, compact and try to use standardized elements}

39. Three elements determined by the tightening force? What are the principles of management and tightening action points? {The choice of the direction of the point of the direction of the direction must generally follow the following principles: 1. The direction of the action of the tightening force must be conducive to the precise positioning of the part rather than to destroy the positioning. The cutting force and the severity of the part to reduce the need to tighten the tightening tightening. Make sure that the part is unchanged. Cutting force}

40. What are the commonly used tightening mechanisms? Focus on the analysis of the oblique tightening mechanism in the area. {1.

41. How to classify the characteristics of the drilling model? How to classify the structural characteristics of the drilling cover? What are the specific connections for the drilling model and the clip? {Drilling molds according to the characteristics of common structural characteristics: 1. Fixed drilling mold 2, rotor drill mold 3. Flip type drilling mold 4. Covering diamond mold, model of sliding pillar of structural characteristics Drilling drilling Category: 2. 1. Fixed fixed drill mold 2. Drilling mold exchange 3. Quick drilling drilling model 4 Special drilling drilling model on the specific connection method: 3. Suspension fixed hinge separation}}

42. What are the characteristics of the central machining machine tools? {1.