Processing technology of mower blade
A processing technology and lawn mower technology, which is applied to harvesters, cutters, agricultural machinery and implements, etc., can solve the problems of low processing accuracy and short service life of rotary lawn mower blades, and achieve good blades and improved Tempering stability, good mowing effect
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Embodiment 1
[0021] Example 1: A kind of processing technology of mower blade, its processing step is as follows:
[0022] (1) Use matlab software to build a model, and determine that the initial trajectory of the blade is composed of straight lines and arcs;
[0023] Among them, the linear processing trajectory is based on the starting point, which can describe the entire straight line; the arc processing trajectory is to first determine the starting point and end point; calculate the starting angle, radius, coordinates of the starting point, and determine the cutting length and radian;
[0024] (2) Use a stamping die to stamp GCr15 steel to form a prototype of the blade. The prototype of the blade adopts the shape of a sickle blade, and the blade is set at the inner end of the blade. The blade is gradually thickened from the blade to the back of the blade. The thickness of the back of the blade is 2mm;
[0025] (3) Quenching the preform obtained in step (2) at a temperature of 830°C, a...
Embodiment 2
[0032] Example 2: The difference from Example 1 is that the blade back thickness in step (2) is 4mm, quenching at 850°C in step (3), heat preservation for 1h, and the fine grinding spindle speed in step (4) is controlled at 0.320m / s , the speed of the grinding wheel is controlled at 38m / s, and the surface of the blade is heated by light waves at 400°C in step (9).
[0033] The beneficial effects of adopting the above technical solutions are: the processing technology of a lawn mower blade in the present invention includes model building → blade blank stamping → quenching → grinding cutting → edge cutting → flaw detection → heat treatment → cooling → reheating treatment. In the step (2) mentioned in the present invention, GCr15 is selected as the blank material, which has low cost and high-quality steel grade, and has the characteristics of good metal strength, plasticity and toughness; the hardness of the workpiece is 28HRC, which is convenient for subsequent cutting. The qu...
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