Bobcat Bucket Teeth Replacement 9N4552 Replacement Parts

Special requirements for tool angles of different construction machinery

Due to differences in functional characteristics, processing objects and working conditions, different construction machinery has special requirements for tool Angle design, as follows:

I. Earthmoving Machinery (Bulldozers/Loaders)

Triple adjustment mechanism of shovel Angle ‌

Plane Angle (α) ‌ : The adjustable range of the movable shovel bulldozer is ±65°, enabling lateral soil unloading (oblique shovel) or right-angle operation (forward shovel), and is suitable for construction in complex terrains.

Inclination Angle (β) ‌ : vertical adjustment range 0° to 4.6°, used for shaping arched roadbeds or loosening hard soil to prevent local overload.

The shovel Angle (γ) ‌ : dynamically adjusted according to soil grade: for grade I soil, a larger Angle is taken to reduce resistance; for grades II to III soil, the Angle is reduced to enhance penetration.

Ii. Wood processing Machinery

Soft and hard wood differentiated knife Angle strategy ‌

Cork cutting ‌ : a large rake Angle (20° to 25°) is adopted to reduce fiber tearing, and a helical edge Angle (30°) is used to enhance the smoothness of chip removal.

Hardwood/counter-grain processing ‌ : The rake Angle is reduced to 10° to 15° to resist chipping. During fine processing, the relief Angle is increased to 12° to 15° to reduce frictional overheating.

Special configuration for surface engraving ‌

The main deflection Angle of the ball-end mill is set at 90° to enhance the surface fit, and the cutting edge inclination Angle adopts a 30° helix Angle to suppress the formation of burrs.

Iii. Metal Cutting Equipment (Lathes/Machining Centers)

1. Rough machining tools

Rake Angle/relief Angle ‌ : take a smaller value (rake Angle ≤6°, relief Angle 6° - 8°) to enhance the impact resistance of the cutting edge

Edge inclination Angle ‌ : Positive Angle (5° to 10°) enhances chip breaking capacity. Under high-vibration conditions, it can be increased to over 10°.

The main deflection Angle ‌ : 30° to 45°. Increase the cutting width and combine it with a large tool tip arc radius (R0.5 to 1mm) to disperse the heat load.

2. Precision machining tools

Rake Angle/relief Angle ‌ : an increase in the rake Angle reduces drag, and an increase in the relief Angle to 10° to 12° reduces friction

Edge inclination Angle ‌ : negative Angle (-4°) stabilizes cutting, and the main deflection Angle is expanded to 60° to 75° to reduce radial vibration.

Secondary deflection Angle ‌ : take a smaller value (≤5°) to polish the surface, and increase the tool tip radius to R1-2mm to improve the smoothness.

3. Special materials processing

High-hardness alloy ‌ : negative rake Angle + zero relief Angle combination (carbide tools) enhances edge strength.

Wire cutting of conductive materials ‌ : relying on the characteristics of electrical discharge machining, the mechanical influence of the Angle is weakened.

Iv. Requirements for Common Special Scenarios

Key points for adjusting the Angle of the scene knife

Intermittent cutting ‌ the negative edge inclination Angle enhances impact resistance, and the relief Angle is reduced to maintain strength

For thin-walled parts processing, the main deflection Angle is ≥75° to reduce the dorsal force, and the secondary deflection Angle is increased to prevent vibration and flutter

High-speed cutting ‌ slightly reduces the relief Angle (for wood processing) to enhance the rigidity of the cutting edge

Note: When the system rigidity is insufficient, efficiency must be sacrificed to ensure stability - for example, in the turning of slender shafts, a 90° main deflection Angle + vibration damping chamfering design is adopted.