CN2838826Y - Engine flyball double-angle forming milling-cutter - Google Patents

Abstract

The utility model relates to a dual angle form milling cutter for engine flyweights, which belongs to the field of machinery manufacture. The utility model provides a special dual angle and arc molding milling cutter for processing forming grooves of engine flyweights, which belongs to a milling cutting tool. An acuate tooth back is arranged on a cutter face behind a cutter tooth of an original form milling cutter, change can be generated on the forming surface of a flyweight which is process out after a cutter is reground, the quality of products is affected, the thickness of the cutter is thicker and cutter materials are wasted. An original acuate tooth (a straight line) back of a cutter is improved and is designed into an Archimedean spiral back cutter face, a cutter tooth can sharpen a front cutter face again, cutter sharpening can be simplified, the milling cutter can be used many a time and repeatedly, the angle and the shape of the cutter tooth can not generate change, the angle and the shape of a forming groove of a flyweight can be ensured not to be changed, processing quality is improved and the processing cost of the forming surface of the flyweight of an engine can be reduced by 80 percent more or less. Because the thickness of the cutter is thinned, materials and the manufacture cost of the cutter can be reduced by one second and machining accuracy is improved.

Description

The two angle form cutters of a kind of engine flyball

Technical field

The utility model relates to mechanical manufacturing field, provides a kind of processing engine flyball forming tank two angle shaping special-purpose milling cutters, belongs to milling cutter.

Background technology

Flyball is the strength member in the engine fuel injection system.It is widely used on the Diesel engine of automobile, steamer, engineering machinery and generating set etc.The profile more complicated of flyball, the grooving above it adds that by the bottom circular arc two not equal angular sides form.The grooving of domestic usually manufacturing works' processing flyball, designed milling cutter adopts the form manufacturing that is similar to asymmetric pair of angle milling cutter of standard GB/T6128.2-1996, manufactures the milling cutter of pointed tooth (straight line) back of tooth form.The shortcoming of this kind milling cutter is that the number of teeth is more, and thickness is thicker, and cutter manufacturing sharpening complexity, and manufacturing expense is very high.Add man-hour, owing to be to mill out grooving on flyball blank surface, the blank case hardness is higher, causes cutter easy to wear, thereby has increased the milling cutter number of times of refacing.After pointed tooth form cutter cutter tooth was refaced along rake face, the angle of the grooving that mills out and shape can change, and the part that processes just is difficult to reach the detail drawing requirement, causes parts batch to scrap, and therefore just needed to improve the design of milling cutter.

Summary of the invention

Deficiency at above-mentioned prior art, the utility model proposes a kind of sheet-like formed milling cutter that can save cutter material significantly, cutter pointed tooth (straight line) back of tooth improved be designed to knife face behind the Archimedes spiral, width according to workpiece, the cutter tooth cutting edge is designed to the width that is slightly larger than the surface of the work shaping, milling cutter thickness equals the Breadth Maximum of cutting edge, the milling cutter that designs like this processes flyball part forming surface angle through repeatedly refacing use and shape can not change, and makes the processing cost of engine flyball profiled surface reduce about 80%.Because with this cutter reduced thickness, cutter material and manufacturing expense minimizing reach 1/2nd, machining accuracy is also corresponding to be improved.

Description of drawings

Fig. 1 is the front view of cutter

Fig. 2 is the cutaway view of cutter

Fig. 3 is the enlarged drawing of cutting edge part

1. knife face behind the Archimedes spiral back of tooth of milling cutter cutting edge 2. circular arc cutting edges 3. milling cutter cutting edges 4. cutters

The specific embodiment

It is that φ 125～φ 130mm, the cutter tooth number of teeth are 12～16, milling cutter cutting edge (1) (3) arranges that for asymmetric angle circular arc cutting edge (2) R is 0.4-0.9mm that being used to of designing in this example processed engine governor flyball form cutter, its milling cutter external diameter.Milling cutter manufactures sheet, is slightly larger than the width of profiled surface.Circular arc cutting edge (2) the back knife face at the neither equal angular milling cutter cutting edge of this milling cutter (1) (3) back knife face and middle part is designed to the Archimedes spiral back of tooth respectively, after repeatedly refacing, the angle and the shape of cutter processing flyball profiled surface can not change, and have guaranteed the product quality of flyball part.

Claims (1)

1. two angle form cutters of an engine flyball, it is characterized in that: the cutter pointed tooth straight line back of tooth improves and to be designed to knife face (4) behind the Archimedes spiral back of tooth, the cutter tooth cutting edge is designed to according to the width of the workpiece and is slightly larger than the width that surface of the work is shaped, and the milling cutter Thickness Design becomes the Breadth Maximum that equals cutting edge.

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