Dongguan Thor Machinery Co.,Ltd
Dongguan Thor Machinery Co.,Ltd

The step of grinding lathe tool

Lathe tool (refers to move the whole welding using blunt tool) after further back in the burrs on grinder.
High speed steel lathe tool grinding wheel with alumina (white), grinding head of hard alloy with silicon carbide grinding wheel (green).
A, grinding wheel choice
The characteristics of the grinding wheel by abrasive, grain size, hardness, binders and organization five factors.
1, abrasive,
Commonly used abrasive have oxide is, carbide department and high hard abrasive department of 3. The ship and plant commonly used is alumina grinding wheel and silicon carbide grinding wheel. Alumina grinding wheel grinding grain hardness is low (HV2000-HV2400), great toughness, suitable high speed steel lathe tools, with white often called white jade, beige called corundum.
Silicon carbide grinding wheel grinding grain hardness alumina grinding wheel than of wear Hv2800 (or above). High Sex is crisp and sharp, and has good thermal conductivity and electrical conductivity, often for cemented carbide. One common is black and green silicon carbide grinding wheel. And green silicon carbide grinding wheel more suitable for further cemented carbide tool.
2, particle size
The size of the grain size said grinding degree. To sharpen the grain can through every inch of the length on the number of how many holes as symbols. For example 60 particle size is refers to the grits through every inch of the length just on the screen has 60 holes. Therefore, the greater the number of wear, said the fine. Coarse grinding tool grinding serial number of the small grain choose the grinding wheel, fine grinding tool serial number of big (i.e. grinding choose the grain of the grinding wheel). The ship for the common size, 46-a 0 th in soft or hard ones.
3, hardness
The hardness of the grinding wheel is a reflection of the grits in grinding force from surface grinding wheel, falling degree of difficulty.
The grinding wheel hard, namely the surface grind grain is difficult to fall off; The grinding wheel soft, says grits off. Easy The grinding wheel's soft and hard and soft hard grits are two different concepts, must distinguish. High speed steel lathe tool and further cemented carbide tool of soft soft or elected at the wheel.

In addition, in choosing grinding wheel should also consider grinding wheel combination agent and organization. The ship and factory general selection ceramic combination agent (code A) and medium organization grinding wheel.
To sum up, we should be cutting tool materials according to the correct choice of the wheel. High speed steel lathe tools, often should be chosen for particle size, 46 to 60, soft soft or the alumina grinding wheel.
Further cemented carbide tools, should choose grain size of 60 to 80, the soft or soft silicon carbide grinding wheel, they cannot make a mistake.
Second, turning the steps further
1, grinding surface after the Lord, and a knife grinding the deflection Angle and the horns after;
2, grinding surface, and at the same time after vice knife grinding out vice deflection Angle and vice back Angle;
3 front, grinding, and making the anterior horn;
4 and grinding the face and sword point.
Three, but the position and the method. Tool
1, people stand on the side of the grinder, in case the grinding wheel chipped, debris flew out hurt;
2, his hands hold a knife, two cubits let go the distance of clamping the waist, to minimize sharpening the jitter when;
3, sharpening, lathe tool should be put in the level of the grinding wheel center, slightly up tip about 3 ° ~ 8 ° lathe tools, grinding wheel should be done after contact about moving direction level. When turning left grinding wheel lathe tools, to lift up, in case the grinding blade wheel bruising is good 4, after grinding surface, knife tool rod left the partial a Lord of the deflection Angle Angle; After grinding surface, vice knife tool rod to the starboard a vice deflection Angle Angle;
5 and grinding the tip of circular arc, often in the left hand to hold when tool for protection, front with the right hand tool tail rotation.
Four, sharpening safety knowledge
1, but should be first check before cutting tools, grinding wheel nuts have crack, sand are tight, and the try to use, in order to avoid the grinding wheel turn after fracturing or fly out cuts.
2, but can't greatly too forcibly cutting tools, otherwise, it will make hand and touch surface grinding wheel, skidding caused by inductrial injury accident.
3, sharpening should be to wear safety glasses, in order to avoid the grit and scrap iron into the eyes.
4, sharpening of the grinding wheel is not when the direction of rotation to stand, to prevent accidental.
5, grinding small head, must the small cutter knife in stem.
6, grinding wheel stents and grinding wheel clearance must not be more than 3 mm, into the found too large, should be adjusted properly.

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