CN2283536Y

CN2283536Y - Hard metal step countersink compound tool for motorcycle

Info

Publication number: CN2283536Y
Application number: CN 97210008
Authority: CN
Inventors: 赵建敏; 丁波海
Original assignee: Henan No2 Tool Factory
Current assignee: Henan No2 Tool Factory
Priority date: 1997-03-31
Filing date: 1997-03-31
Publication date: 1998-06-10
Anticipated expiration: 2007-03-31

Abstract

The utility model discloses a hard metal step countersink compound cutter for motorcycles, which is composed of a taper shank and a cutter head, wherein, the cutter head comprises the expanding cutter head of a front end and a two-step countersink cutter head of a back side; the expanding cutter head and the countersink cutter head are respectively provided with two or more than two hard metal blades which are symmetrical or not symmetrical. The utility model is characterized in that each blade surface of the blades of the expanding cutter head and the two-step countersink cutter head is a mirror surface, and the surface roughness of the mirror surface can reach to Ra< 0.01 mum (>*14). The utility model has the advantages of advanced technology and reasonable economy, and can effectively improve the manufacture technical level of motorcycle parts.

Description

Motorcycle expands the compound cutter of ream with the carbide alloy ladder

The utility model relates to the special-purpose ladder of a kind of production and processing motorcycle engine and expands the ream compound tool.

The compound cutter of ream is expanded in production motorcycle engine special use at present, and its cutter head surface roughness only can reach Ra 〉=0.2～0.4 μ m, and behind this cutter machining hole, workpiece surface roughness has only about Ra=1.6 μ m.Will be with the processing of equipment for grinding mill if workpiece requires high slightly, the workpiece cost improves, and influence production efficiency, for non-ferrous metal and Al alloy parts, the general surface quality that reaches desirable of also being difficult to grinding.

The purpose of this utility model provides a kind of high efficiency, high-precision motorcycle expands the compound cutter of ream with the carbide alloy ladder, this cutter is when reaming, spot-facing, can very easily make the endoporus of workpiece to be machined reach Ra＜0.32～0.1 μ m (＞ 9～ 10), removed the mill manufacturing procedure from, or removed multiple working procedure processing from, enhance productivity.

The purpose of this utility model is achieved in that it is made of taper shank and cutter head, and cutter head includes the reaming cutter of front end and two ladder spot-facing cutter heads of back.Be respectively equipped with two or more symmetry or asymmetrical carbide chips on reaming cutter and the spot-facing cutter head.Its key technology is that each blade face of reaming cutter cutter and each blade face of two ladder spot-facing cutter head cutters are minute surface, and surface roughness reaches Ra＜0.01 μ m (＞ 14).

Below in conjunction with drawings and Examples structure of the present utility model is further described in detail.

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model reaming cutter week sword B-B profile;

Fig. 3 is the utility model spot facer E-E profile;

Fig. 4 is the utility model reaming cutter A-A profile;

Fig. 5 is the utility model spot facer end sword C-C profile.

Referring to accompanying drawing, the utility model is made of taper shank 1 and cutter head, and cutter head includes the reaming cutter 5 of front end and two ladder spot-facing cutter heads 4,2 of back.Be respectively equipped with two or more symmetry or

asymmetrical carbide chips

6,3 on reaming cutter 5 and the spot-facing cutter head 4,2.Its key technology is that the forward and backward blade face 7,8 of reaming cutter 5 cutters 6 and the forward and backward blade face 9,10 of two ladder spot-facing cutter heads, 4,2 cutters 3 are minute surface, and surface roughness reaches Ra＜0.01 μ m (＞ 14).

Each blade surface of the present utility model is minute surface, surface roughness reaches Ra＜0.01 μ m, so blade is partly very sharp, no sawtooth defective, no circular arc occurs, be used for the hole and add man-hour, as select suitable cooling fluid, and can make surface of the work reach Ra≤0.04～0.02 μ m (＞ 12～ 13), need not increase equipment, repeatedly processing can reach desirable surface roughness.

Good effect of the present utility model is mainly manifested on its technology advanced, economically reasonable, has height The processing and forming characteristics of efficient, high accuracy, high reliability satisfy need of production.

Claims

1, a kind of motorcycle expands the compound cutter of ream with the carbide alloy ladder, constitute by taper shank (1) and cutter head, cutter head includes the reaming cutter (5) of front end and two ladder spot-facing cutter heads (4) of back, (2), reaming cutter (5) and spot-facing cutter head (4), (2) be respectively equipped with two or more symmetry or asymmetrical carbide chips (6) on, (3), it is characterized in that reaming cutter (5) cutter (6) before, rear knife edge face (7), (8) and two ladder spot-facing cutter heads (4), (2) cutter (3) before, rear knife edge face (9), (10) be minute surface, surface roughness reaches Ra＜0.01 μ m (＞ 14).