CN2354967Y

CN2354967Y - Spiral blade

Info

Publication number: CN2354967Y
Application number: CN 98225675
Authority: CN
Inventors: 顾玉书; 顾伟国
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-17
Filing date: 1998-11-17
Publication date: 1999-12-22
Anticipated expiration: 2008-11-17

Abstract

The utility model discloses a helical blade is used in leather processing for go the fleshing to being processed the leather and cut evenly. The inner section of the cross section of the spiral blade is rectangular, the front and the back of the outer section are respectively a concave arc surface and a convex arc surface, and the outer section is gradually thinned from inside to outside and is in a circular trapezoid shape; the included angle alpha between the extension line of the outer edge in front of the outer section and the front of the inner section is 3-18 degrees, so that the situation of 'coke cutting' in the leather processing process can be avoided, the yield of the processed leather is improved, and the service life of the blade can be prolonged.

Description

Screw blade

The utility model relates to a kind of cutter, is in order to the screw blade of fleshing shaving specifically in a kind of leather processing procedure.

At present, in the leather processing industry, mostly be manual beaing in order to the screw blade of fleshing shaving and make.Because the cross section of this screw blade is a rectangle, anterior angle chip removal resistance is bigger, and the relief angle root easily produces friction, cause its blade temperature to raise, be prone to " cutting Jiao " phenomenon in the leather processing procedure, not only processed leather yield rate is not high, also can reduce the work-ing life of cutter.In addition, thick, book is irregular because this screw blade is for being made by handwork, easy generation lifts situation also in the leather processing procedure so also can influence the yield rate of processed leather.

The purpose of this utility model is to provide a kind of screw blade, and this blade is long service life not only, can also improve the yield rate of processed leather.

Above-mentioned purpose of the present utility model realizes by following technical solution:

The inner segment of the cross section of screw blade of the present utility model is a rectangle, and the forward and backward face of outer section is respectively cancave cambered surface and convex globoidal, and the attenuation gradually from inside to outside of outer section, and it is trapezoidal to be circular arc; The outer extended line and the angle α between the inner segment front of outer section front are 3～18 °

Since the cross section of screw blade of the present utility model from inside to outside gradually attenuation to be circular arc trapezoidal, and the outer extended line and the angle α between the inner segment front of its front, outside are 3～18 °, the sharpness and the stock removal rate of blade have been improved, reduce row and cut resistance and the friction of relief angle root, the blade temperature is difficult for raising, can not occur " cutting Jiao " situation in the leather processing procedure, not only can improve the yield rate of processed leather greatly, can also prolong the work-ing life of blade.Because it is screw blade of the present utility model can disposable extrusion molding, thick, evenly thin again, in the leather processing procedure the lifts situation can not appear, also help to improve the yield rate of processed leather.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is a screw blade synoptic diagram of the present utility model;

Fig. 2 is the A-A cross-sectional schematic of Fig. 1;

As depicted in figs. 1 and 2, screw blade of the present utility model is to form with the disposable extruding of high strength anti mushroom steel alloy.The inner segment A of its cross section is a rectangle.The front 5 of outer section B is that arcs of recesses, back 2 are convex, and is somebody's turn to do outer section B attenuation gradually from inside to outside, and it is trapezoidal to be circular arc.The outer side 3 of outer section B is a blade 4 with the intersection of its front 5, and outer side 3 wherein is the face of tool.Be formed with angle α between the outer extended line of outer section B front 5 and the inner segment A front 6, this angle can be selected in 3～18 ° of scopes according to the different requirements of various processed leathers, and the utility model then is 10 °.

In addition, being connected of 2 of the back of 5 of the fronts of the front 6 of screw blade cross section inner segment A of the present utility model and outer section B, the back 1 of inner segment A and outer section B, all being and seamlessly transitting.

Claims

1. screw blade, the inner segment (A) that it is characterized in that this screw blade cross section is a rectangle, and forward and backward (5,2) of outer section (B) are respectively cancave cambered surface and convex globoidal, and (B) attenuation gradually from inside to outside of outer section, and it is trapezoidal to be circular arc; Outer extended line of outer section (B) front (5) and the angle α between inner segment (A) front (6) are 3～18 °.

2. blade according to claim 1 is characterized in that between the front (5) of the front (6) of this screw blade cross section inner segment (A) and outer section (B), between the back (2) of the back (1) of inner segment (A) and outer section (B), all is to seamlessly transit.