CN87212433U

CN87212433U - Rotary single edge reamer operated under upper pressure

Info

Publication number: CN87212433U
Application number: CN 87212433
Authority: CN
Inventors: 李旭淮
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-11-16
Filing date: 1987-11-16
Publication date: 1988-07-27

Abstract

The utility model relates to an indexing single edge reamer operated under upper pressure, and the cutter head of the cutter body is provided with an indexing blade with a centre hole. The blade adopts the center screw gripping mode. The blade can be fastened only by tightening a center screw passing through the centre hole of the blade. The blade can be adjusted from the radial direction and the shaft direction, and the blade has high utilizing rate. The reamer can carry out sizing batch production according to different dimensions and specifications and reduce the inventory level of the cutting tools.

Description

Rotary single edge reamer operated under upper pressure

The present invention is a kind of metal-cutting machine tool.

The Single-blade reamer that indexable insert tip, throw away tip is housed that has adopted in the existing industry, all common characteristic arranged: its indexable insert tip, throw away tip is for long and narrow carbide alloy Tiao, And and have only two cutting edges.These two cutting edges are positioned at the center line and at grade of cutter.Indexable insert tip, throw away tip adopts clamping element clampings such as pressing plate edge bearing and screw.Such clamp mechanism position that takes up space is big, and its result hinders chip removal, weakens cutter hub exactly.Such cutter is particularly worked as size and can be caused distortion than the clamping of hour blade and the adjustment of blade, to the ream effect with cutter life adverse effect is arranged all.

West Germany moral periodical " workshop and enterprise " 1986NO7P600-602 has published a kind of chucking reamer of adorning the indexable insert tip, throw away tip of band centre bore, this new reamer since blade have the bearing-surface of big and flat bottom support face, fulcrum post and two adjust screws supporting, make indexable insert tip, throw away tip on cutter hub, obtain a definite position (location), use pinching screw fastening again, pinching screw is by in the screw thread of precession clamp, clamp itself links to each other with cutter hub with another screw, but rotatable.When adjusting the diameter dimension of cutter with two adjustment screws, clamp is turned back to preposition with blade, because clamp fuses with blade, clamp is with senior modified spring steel.Though it is few that this cutter has a mechanical original paper, the cutter hub good rigidly, Single-blade reamer than the indexable insert tip, throw away tip that long and narrow carbide alloy bar is housed, improved advantages such as ream effect and cutter life greatly, but its structure is also comparatively complicated, blade can only be in the restriction of radially adjusting and be subjected to this body structure, the little utilization rate that influences blade of adjusting range.

Characteristics of the present invention are that blade clamps employing central screw formula clamping device.

Front end at cutter hub cutter head position has the cutter groove that has only a side and baseplane, two screws have been opened on the cutter groove side, be equipped with in two screw (headless screw) accompanying drawings 1 of radially adjusting blade 4 on the screw, the intermediate open position on cutter bottom land plane a screw, the central screw that a clamping blade is used is housed on the screw, (in the accompanying drawing 1 5), two screws have been opened at the rear on cutter bottom land plane, being equipped with two on the screw axially adjusts these screws of screw of blades and is the screw of the eccentric head of band (in the accompanying drawing 1 3), the size of the size of the centre bore of indexable insert tip, throw away tip and center pinching screw external diameter adapts, blade is contained in that its center borehole jack is having on the pinching screw of recessed neck in the cutter groove, when unscrewing, the center screw radially adjusts the diameter dimension that screw is adjusted cutter with two on the cutter groove side, at this moment also to be with the axial adjustment screw of eccentric head to adjust with two of cutter groove rear, this moment, it cooperated two radially to adjust screw and adjust the tool diameter size and accomplish the back taper amount of blade to the shank direction on the one hand, on the blade total length, measure and be about 0.01～0.02 millimeter, play supporting blade on the other hand, also can make the blade direct-axis to doing compensation when behind the blade abrasion sharpening, re-using towards front end, guarantee that the distance of ordering apart from point of a knife A in guide pad the place ahead is always the optimum position, when the screw-driving of center, just the side of blade is affixed to a side and two axial adjustment on the screw of cutter groove, when re-using behind the blade abrasion sharpening, just be affixed to four and adjust on the screws, and blade is pressed on the baseplane of cutter groove blade is clamped.

This cutter cuts, cuts and leads with single-blade and separates, is equipped with on the external diameter periphery of cutter hub cutter head part two carbide alloy guide pads (in the accompanying drawing 1 1), make on the cutting edge radially and being distributed in just with joint efforts between two guide pads of tangential force, by guide pad in Kong Zhongqi supporting guiding and burnishing-in effect, improved the dimensional accuracy and the surface roughness in hole effectively.When the blade of this cutter adopts square band centre bore indexable insert tip, throw away tip, since reverse the α angle obtain eight cutting edges (in the accompanying drawing 16 and accompanying drawing 2 in a), during as the indexable insert tip, throw away tip of employing rectangle band centre bore, the cutting edge branch that can obtain four cutting edges (b in the accompanying drawing 2), blade makes two sections two drift angles, major cutting edge is undertaken main shear action, transitional edges plays micro cutting and burnishing-in effect.

The cutting edge of blade and guide pad have an offset, this value to be decided by cutting data and rapidoprint not on the same center of circle.This cutter is according to selecting for use the difference of indexable blade specification can manufacture all size and pattern, certainly makes the reamer of special construction such as Stepped Reamers (because blade is short) or interior cooled structure, because the cutting tapering is short, so can be used for the ream blind hole.

This cutter is not only simple in structure, blade is easy to adjust, ream is effective, cutter life is long, again because blade have eight cutting edges or four cutting edges successively transposition use and blade utilization rate height, can reduce the tool magazine storage, economic benefit is greatly improved.

Accompanying drawing 1 is among a kind of indexable Single-blade reamer overview of pressure type figure of going up, 1-guide pad (2) 2-reamer body, 3-axially adjusts screw (2) 4-and radially adjusts screw (2) 5-central screw, and 6-is with the indexable insert tip, throw away tip with centre bore of eight cutting edges.

Accompanying drawing 2 is among the view figure of this indexable Single-blade reamer blade,

A-with the square of eight cutting edges have centre bore indexable insert tip, throw away tip,

B-has the indexable insert tip, throw away tip of centre bore with the rectangle of four cutting edges.

Claims

1, a kind of go up the indexable Single-blade reamer of pressure type by cutter hub, guide pad, pressing plate indexable insert tip, throw away tip with mechanical assembling mode be combined into.Feature of the present invention is the clamping device that blade adopts the central screw formula, and having on the cutter groove that has only a side and baseplane, the cutter groove side at the cutter head position of cutter hub front end has for two screws radially adjusting the screw use.The interposition on cutter bottom land plane is equipped with a screw for the central screw use, and the rear on cutter bottom land plane has two for axially adjusting two screws that screw uses.The blade of an indexable band centre bore is housed in the cutter groove.

2, a kind of indexable Single-blade reamer of pressure type of going up according to claim 1 is characterized in that being equipped with two from radially adjusting the adjustment screw of blade in two screws on its cutter groove side.

3, a kind of indexable Single-blade reamer of pressure type of going up according to claim 1 is characterized in that being equipped with in its two screws in cutter groove bottom rear two from the screws of the axial adjustment blade screw for the eccentric head of band.

4, a kind of indexable Single-blade reamer of pressure type of going up according to claim 1, it is characterized in that in its screw in centre position, cutter bottom land plane, a central screw that passes the blade center hole of clamping blade is housed, just two sides of blade are affixed to side of cutter groove and two when tightening this central screw respectively and axially adjust on the screw, when re-using behind the blade abrasion sharpening, just be affixed to four and adjust on the screws, and blade is pressed on the baseplane of cutter groove blade is clamped.

5, a kind of indexable Single-blade reamer of pressure type of going up according to claim 1 is characterized in that the indexable insert tip, throw away tip of its blade for square band centre bore and rectangle band centre bore.

6, a kind of indexable Single-blade reamer of pressure type of going up according to claim 1, it is characterized in that because design feature own, it can also make ladder form and interior methods for cooling, can be referred to as a kind of pressure type indexable single-blade staged reamer and a kind of interior cooling of the indexable single-blade of pressure type reamer of going up gone up.