Movement and test analysis of cam mechanisms

Overview

 

In the teaching of modern "Mechanical Principles", it is more and more focused on teaching methods that combine theoretical and practical theory and practice of students, focus on cultivating students 'hands -on ability and innovative awareness, and focus on cultivating students' flexible exercise ability for modern virtual design and modern testing methods. Essence The cam is a commonly used institution in machinery. With the development of modern industries, mechanization and semi -automation are becoming increasingly popular, and the camworne mechanism has been widely used.

 

Function and characteristics

 

(1) The cam motion precision measurement experiment platform has manual testing and automatic testing functions of camship lines. Understand the test method of the camcores through experiments.

(2) With the calculation function of the campline curve, according to the detection data of the campline and the basic size of the cam mechanic obt--ned by the measurement, the computer is used to reflect the changes in the value of the moving part, the speed, and the acceleration of the acceleration.

(3) Use a computer to collect and process the motion parameters of the camskin, make a actual measured curve of the moving part of the motion of the dynamic parts, and simulate the movement of the mechanism through the computer. The theoretical curve of the movement of the motion, so as to deeply understand the movement characteristics of discs and cylindrical cams in different laws.

(4) Compare the comparison of the actual measurement results and theoretical simulation curve through the cam mechanism motion parameter curve, compare the differences between the two, and the analysis error cause.

(5) Optimize design parameters of the cam mechanism through a computer, simulation and test analysis of the cam mechanism movement, so as to achieve the effective combination of computer auxiliary design with computer simulation and test analysis, to achieve the close combination of theoretical and practical, and cultivate students Practical hands -on ability and innovation awareness.

1. The characteristics of the product:

 

The experimental table has more comprehensive safety protection measures and more complete functions. The center of the experimental table is equipped with a universal circuit board, and the circuit board is injected into injection. The surface cloth has porous into a set of connecting jacks. The component box is freely inserted into an experimental circuit. The intuitiveness is good. Component symbols, clear and beautiful lines. The box body and the lid adopt a more scientific card structure, which is convenient for m--ntenance and disassembly. The components are placed in the left and right cabinets under the experimental table, which greatly improves the level of management and the degree of planning, which greatly reduces the preparation of teachers' experiment.

 

2. Experimental table and operating table structure:

 

1. Experiment table shell size: 123 × 35 × 20cm

 

2. Three -phase insurance seat

 

3. Three -phase power input indicator

 

4. Total switch: Total switch of the experiment platform, leakage and overload protection

 

5. Test button: Test leakage switching leakage function

 

6. Power input indicator 1

 

7. The power supply output indicator 3 (red, green, yellow three color)

 

8. AC voltage table: indicate output cable voltage

 

9. Voltage conversion switch: Combined with the voltage meter, monitor the size and symmetry of the output cable voltage

 

10. 5 Wiring seats: Unit A, three -phase, four lines and ground line output

 

11. Current meter W phase current output instruction

 

12. O/i switch: three -phase four -wire power supply output control

 

(Improve the safety factor)

 

13. Two wiring seats: Union B AC low -voltage power output

 

14. Power Table (2A): Unit B AC current instructions

 

15. Knob: Union B 3-24V AC low pressure selection output

 

16. Switch: Union C Drinks DC voltage voltage pressure power switch

 

17. Knob: Union C dual road Ⅰ road steady stream adjustment

 

18. Knob: Union C, Double Road II Road Stabilization Adjustment

 

19. Two wiring seats: Unit C Road Ⅰ DC stabilization output

 

20. Insurance seat: Union C dual -road voltage pressure power insurance

 

twenty one. 4 meters: dual -road voltage power supply voltage, current indication

 

twenty two. Wiring seat: Union D DC 5V Voltage Output

 

twenty three. Electric meter: Union D current 0.5V output instructions

 

twenty four. Switch 1: Control each low -voltage AC power and signal source

 

25. Switch 2: Control the DC pressure regulation power supply

 

26. Electric meter: Unit A AC voltage output instructions

 

27. 4 wiring seats: Union E -AC, DC output export

 

28. Knob: Union E 0 ～ 240V voltage adjustment

 

29. Socket: G Unit 220V output socket

 

30. Knob: audio power amplifier volume adjustment

 

31. 2 Wiring seats: audio signal input

 

32. Button: a single pulse for switching

 

33. 3 wiring seats: single pulse output port

 

34. Electric meter: Functional generator sine wave output voltage instruction

 

35. Knob: Snuar wave output three -level attenuation amplitude rough tone

 

36. Knob: sine wave output port

 

37. Wiring seat: sine wave output port

 

38. Knob: rectangular wave output amplitude adjustment

 

39. Wiring seat: Triangular wave output port

 

40. Knob: Functional generator frequency fine tone

 

41. Wiring seat: rectangular wave output port

 

42. Knob: Functional generator 5 -level frequency rough tone

 

43. Electric meter: function generator output frequency indication

 

45. Experiment desktop size: 160 × 70cm

 

46. General circuit board: Specification 35 × 90cm, the component box is experimentally integrated on it

 

47. Storage board: Place the component box

 

48. Left storage cabinet: Place storage board (with door lock)

 

49. Drawer: Place common tools

 

50. Right storage cabinet: Place storage board (with door lock)