Knife Holder

Knife Holder

scarifier cutter is a type of conservation for the removal of pavement materials, machinery, high speed rotation of the cut milling drum and filled with milling method using inverse removed, asphalt cement concrete pavement. Because of the complexity of the material composition, hard top, wear a sharp knife makes the fastest consumption of wearing parts, greatly increase construction costs. Therefore, the strengthening of research resources and rational use of significant economic importance.

Structure and Process Tool
Tool typical structure shown in Figure 1, mainly Cutter, knife holder and base composition. Binding as read: adjacent to the base of the milling drum, knife block fixing screw through the base slot, while the cutter head knife inserted in place arises. Segment from the tip, knife handles, gaskets, and there is the composition (Figure 2).

Segment
Cutting due to the completion of tasks large type materials, large particles of tungsten carbide alloy used by the soft cobalt metal will link it together and the hardness reached 1400HV on the high temperature, high-impact cases, also has a better flex and abrasion resistance. The cone-shaped tip, top diameter is small, down to earth to make sure that taper on performance, reducing cutting resistance, tip diameter at the end of large, providing protection against the knife handle. Corner of special brazing copper pipe on, power connection, can afford to exercise the knife edge knife handle 45 degrees in the direction of 6 tons of force generated by bending.

Upper leg has a different and bottom of the mechanical properties, friction with the upper midway and milling waste, which require hard top, bottom half of the stick in a knife block, should be able to absorb the impact of the milling process, Therefore, resistance good. This part of the right will have to have a dual property: the wear and bending. Between the rat has a slot, we can exhaust stack using a knife cutter head pulled out a knife block (some Blade did not turn a knife slots, use Cutter fist of it from the back). Cutter some new fabric is also the head pipe grooves to increase friction with the ground during rotation performance, for to prevent partial wear.

Gasket is made of spring steel of high quality, form spring-like disk, showing inverted cone. its usefulness is twofold: First, reduce the consumption of a knife block. Segment performance rotating the country if they are installed directly on the knife, knife block is bound to cause serious wear and tear, while the knife is much higher than the price of Block Cutter, so to install a gasket in between, so that segment rotation only with friction pads to protect the knife block, second, place the cone-shaped cone gasket and knife positioning accuracy area to ensure that the work of the segment to a knife block in a right good state, reducing knife block Kong intake.
Spring up from 1.2 mm steel with high quality spring is made in a knife block knife block hole after strong pressure, and the milling process does not drop from a knife block. Milling process should be able rotation segment, the sources with a knife handle large radial clearance between.

Knife Block
old-fashioned machine milling is used in a welding knife block, not easy to replace, are now using block-type quick change knife through set screws under fixed. open screw screws can easily remove the knife block. installation knife block area, effectively protecting the base and reducing stress. Open two instances the top ring groove, how-wear lines for easy maintenance.

Base
Directly adjacent to the mill base drum, but to install additional tools, there is a very important role - conveying screw. milling drum major basic agreement coil, forming a knife "Way spiral." After milling waste is to rely on rotating "spiral blade" will be pushed in between the milling room, and then throwing thrown through plate material. Therefore, the basic form and appearance of a direct impact on the milling drum stacker, as well as expected income effect, require special attention.