CN2661345Y

CN2661345Y - Chamfering and countersinking tool for orifice of inner cavity

Info

Publication number: CN2661345Y
Application number: CN 200320110720
Authority: CN
Inventors: 申姜宏
Original assignee: Yangdong Co Ltd
Current assignee: Yangdong Co Ltd
Priority date: 2003-11-13
Filing date: 2003-11-13
Publication date: 2004-12-08
Anticipated expiration: 2013-11-13

Abstract

A chamfering and spot facing cutter for inner cavity hole is composed of cutter bar, cutter and rotary axle. The utility model is used for chamfer and mounting surface ream in part inner chamber drill way are overcome and are added earlier and insert the cutter arbor from the outside man-hour at present, and the trouble of cutter is adorned from the inner chamber again, only need insert the cutter arbor, and rotatory cutter can be processed promptly, convenient and fast, and production efficiency is high, both can be used to manual operation, can be used to process on the lathe again.

Description

Inner chamber aperture chamfering, the flat cutter of ream

Technical field

The utility model relates to a kind of machine tool, especially for the flat cutter of chamfering, ream of inner cavity of component aperture machining.

Background technology

Product parts is in process, often run into the inner chamber aperture and need chamfering and the flat situation of mounting plane ream, as shown in Figure 1 and Figure 2, the machining tool that uses a kind of knife bar and cutter to separate in the common processing method, add and earlier knife bar is inserted in the hole from the part outside man-hour, put into cutter from inner cavity of component again, cutter and knife bar are coupled together, carry out the chamfering of inner openings and the ream of mounting plane and put down with screw or nut.More than processing is loaded and unloaded cumbersomely, and production efficiency is lower.

The utility model content

The utility model is intended to solve in the prior art processing trouble, problem that production efficiency is low, and a kind of new inner chamber aperture chamfering, the flat cutter of ream are provided, during processing loading and unloading easy, the production efficiency height.

The technical solution of the utility model is: inner chamber aperture chamfering, the flat cutter of ream, comprise knife bar, cutter, improvements are that knife bar, cutter link together, described cutter is isosceles triangle, its base length is greater than the knife rod head diameter, cutter is installed in by gyroaxis in the open slot of knife rod head, and the gyroaxis center is on the leg-of-mutton drift angle bisector of cutter.

Above-mentioned gyroaxis is centered close to the midpoint of cutter triangle drift angle bisector, half a of drift angle bisector and knife bar diameter D ₁Meet a≤D ₁/ 2, the distance L on the summit of gyroaxis center to the cutter triangle base and gyroaxis center meet L≤H to the distance H of open slot bottom surface.On three limits of triangle cutter cutting edge is arranged all.

Add man-hour, with the cutter rotation, make the triangle base be parallel to the knife bar axis earlier, do not expose the cylindrical of knife bar like this in the cutter income knife bar fluting; Then cutter and knife bar are inserted in the hole from the part outside together, with hand cutter is rotated to duty again, when leg-of-mutton base is outside open slot, can be used for the aperture chamfer machining, when the triangle base was in open slot, the ream that can be used for spot face was flat; Strain and rotate the handle of knife bar at last, can carry out needed processing.Obviously,, reduced the trouble of loading and unloading, improved production efficiency because cutter does not separate all the time with knife bar.

The utility model then can be used for processing on the lathe as the knife bar handle portion is designed to and the machine tool chief axis ways of connecting.

Description of drawings

Fig. 1 is a product cavity aperture chamfering schematic diagram;

Fig. 2 is the flat schematic diagram of product cavity spot face ream;

View when Fig. 3 is used for the aperture chamfering for the utility model;

Fig. 4 is an A-A place generalized section among Fig. 3;

Fig. 5 is used for spot face ream peacetime state schematic diagram for the utility model.

The specific embodiment

With reference to accompanying drawing, present embodiment is made of knife bar 1, isosceles triangle cutter 2 and gyroaxis 3.Leg-of-mutton apex angle and bottom side length D set according to the chamfering and the spot facing diameter in part aperture.Gyroaxis is centered close to the midpoint of triangle drift angle bisector, also is positioned at the axial centre plane of knife bar simultaneously.The relation of each size meets among the figure: a≤D ₁/ 2, D ₁＜D, L≤H.Three limits of cutter all have cutter to cut sword, and cutter is free to rotate in the knife bar open slot.

Claims

1, a kind of inner chamber aperture chamfering, the flat cutter of ream, comprise knife bar, cutter, it is characterized in that knife bar, cutter link together, described cutter is an isosceles triangle, its base length is greater than the knife rod head diameter, cutter is installed in by gyroaxis in the open slot of knife rod head, and the gyroaxis center is on the leg-of-mutton drift angle bisector of cutter.

2, by the described inner chamber of claim 1 aperture chamfering, the flat cutter of ream, it is characterized in that gyroaxis is centered close to the midpoint of cutter triangle drift angle bisector, half a of drift angle bisector and knife bar diameter D ₁Meet a≤D ₁/ 2, the distance L on the summit of gyroaxis center to the cutter triangle base and gyroaxis center meet L≤H to the distance H of open slot bottom surface.

3,, it is characterized in that on three limits of triangle cutter cutting edge being arranged all by the described inner chamber of claim 1 aperture chamfering, the flat cutter of ream.