Sharpening techniques and standards for commonly used carbide woodworking tools

Commonly used carbide woodworking tool sharpening technology and standards 1 Why should woodworking tools be sharpened

Under normal circumstances, after a period of use of woodworking knives, the surface and blade of the knives will be damaged to varying degrees. The damaged woodworking knives must be carefully sharpened and repaired to ensure the sharpness of the knives before they can continue to be cast. people use. If you forcibly use a damaged woodworking tool, it will not only affect the work

The overall progress of the project is also very likely to cause major casualties.

2 The main tools for sharpening woodworking knives

Grinding wheel is the main tool for woodworking tool sharpening, and it is also one of the basic conditions for the development and application of tool sharpening technology. At present, there are many types and forms of grinding wheels that can be used to sharpen woodworking tools in China, and the price and quality are also different. Therefore, it is very important to choose a suitable grinding wheel. A suitable grinding wheel should not only meet the needs of woodworking tool sharpening technology, but also pursue excellent products with "high quality and low price".

3 Selection points of grinding wheel

Hardness is one of the issues that should be emphasized in the selection of grinding wheels. If the selected grinding wheel is too soft, it is difficult for the sanded tool to meet the quality requirements, and the sanded woodworking tool will quickly lose its sharpness and the use time is very short. In the selection process of grinding wheel, the selection of grinding wheel model is one of the basic contents. At present, various types of grinding wheels popular on the market are mainly divided according to the structure and strength of woodworking tools, and the division is also more specific. Whether the model of the grinding wheel meets the standard plays a decisive role in the working efficiency and sanding quality of the grinding wheel. Different types of grinding wheels also have large differences in the grinding wheel particle size. Only the cutting edge of the woodworking tool sharpened by the grinding wheel with the appropriate particle size can be sharper.

4 Sharpening standards for woodworking bits

Sharpening techniques and standards for commonly used carbide woodworking tools

1. The surface of the drill bit is not allowed to have black skin, cracks, rust, peeling and burns.

2. The knife body is clean and tidy, and there is no foreign matter.

3. Precisely maintain the angle value of each cutting element and its mutual configuration.

4. The end face swing of the cutting edge after sharpening is less than or equal to 0.08mm, and the allowable angle deviation is ±2°

5. The guide center is symmetrical, and the center of the cone is consistent with the center of the drill bit.

6. After sharpening, the submerged cutting knife should have the same shape, and the main edge should be on the same horizontal plane.

7. The two cutting edges of the tapered sharpening are of the same length, and the inclination of the two cutting edges is consistent with the rotation axis of the drill bit.

8. The transverse edge of the drill bit is ground into a straight line, and the middle part passes through the center of the rotary shaft of the drill bit.

5 Sharpening standards for woodworking routers (carbide)

Root carving single-edged double-slot engraving milling cutter electric grinding tool woodworking grinding head

1. The surface of the blade must not have black skin, cracks and rust, and the blade must not have the phenomenon of curling and chipping.

2. The knife body is clean and tidy, and there is no foreign matter.

3. Front angle, rear angle and wedge angle remain unchanged

4. The thickness of each blade is the same

5. The radial runout tolerance of the blade diameter is 0-0.05mm

6. The circular runout tolerance of the blade end face is 0-0.03mm

7. Grinding depth: generally 0.002~0.01mm each time

8. Wet grinding feed speed: 25~45m/s for metal bond and 15~25m/s for resin bond.

6 Sharpening standards for forming milling cutters (carbide)

Sharpening techniques and standards for commonly used carbide woodworking tools

1. The surface of the blade must not have black skin, cracks and rust, and the blade must not have the phenomenon of curling and chipping.

2. The front angle, rear angle and wedge angle remain unchanged

3. The thickness of each blade is the same

4. The edge runout tolerance is 0-0.05mm

5. The circular runout tolerance of the blade end face is 0-0.03mm

6. The gap between the cutter teeth and the template should not exceed 0.1mm

7. Grinding depth: generally 0.002~0.01mm each time

8. Wet grinding feed speed: 25~45m/s for metal bond and 15~25m/s for resin bond.

Selection of the grinding part of the forming milling cutter:

Forming cutters for sharpening the rake face: finger tenon milling cutters, prefabricated milling cutters, profile milling cutters for tooth back arcs

Other forming milling cutters generally sharpen the flank. Generally, the flank face is sharpened about three times and the rake face is sharpened once.

7 Sharpening standards for saw blades

Alloy circular saw blade for woodworking aluminum Dongcheng cutting blade

1. All blade tips are on the same sawing plane

2. The original sawtooth angle remains unchanged

3. The saw body is not allowed to have abnormal conditions such as decarburization, cracks, scars, black spots, grinding annealing and rust.

4. The surface roughness of the sharpened sawtooth can meet the requirements of the production process

Carbide Saw Blade

1. Sharpening part: the sawtooth can grind the rear tooth surface or the rake surface.

2. Grinding depth: 0.002~0.01mm each time

3. Grinding speed: 10~30m/s for metal bond grinding wheel; 7~11m/s for resin bond

8 Sharpening standards for woodworking band saw blades

Sharpening techniques and standards for commonly used carbide woodworking tools

1. The surface of the saw blade must not have black skin, cracks and rust, and the sawtooth must not have the phenomenon of curling and chipping.

2. The sawing angle remains unchanged

3. No protrusions at welding

4. The saw body is not deformed

The application effect of woodworking tool sharpening technology has a great relationship with the selection of tools such as grinding wheels, and at the same time, the technical level and meticulousness of operators are also very important. Only by accumulating rich experience in long-term work practice and gradually improving their professional skills can operators better realize the innovative development and progress of woodworking tool sharpening technology, and even in the repair and maintenance of woodworking tools in the future. play a greater significance and role.