CN204194969U - The anti-reamer of endoporus - Google Patents

Abstract

The utility model relates to the anti-reamer of a kind of endoporus, comprises reamer bar, and reamer bar front end is tapering mounting rod, and reamer bar rear end is mounting rod, and mounting rod overlaps give up the throne nut, reamer body and hold down gag; Give up the throne between nut and mounting rod is threaded engagement; The cylindrical of reamer body is dispersed with at least 4 cutter heads; Reamer body inner periphery has groove, and the key on groove and mounting rod coordinates and realizes transmission; Reamer body inner circle and mounting rod are taper fit.Good effect of the present utility model is: greatly reduce the requirement to operator and labour intensity; Production efficiency is high, one-shot forming, no longer needs repeatedly withdrawing, measurement and dismounting adjustment cutter, shortens process time; Overcoming rotation winding degree to greatest extent beats on the impact of Product Precision with circle, more easily obtains higher machining accuracy, stable size and good surface quality.This cutter need not change the structure of original boring machine, makes old-fashioned boring machine can complete high-precision processing tasks, has saved resource.

Description

The anti-reamer of endoporus

Technical field

The utility model relates to the cutter that a kind of machining uses, and the stepped hole processing being especially applicable to endoporus depths uses.

Background technology

In process of metal working, the stepped hole at the internal hole depth place of frequent needs is processed, present stage, modal endoporus manufacturing process was hilted broadsword bore hole: namely the main shaft of boring machine connects boring bar and makes it rotate, boring bar periphery is provided with outstanding hilted broadsword head by fixture, when boring bar rotates, the periphery that hilted broadsword head rotates is machined surface.

In above process, boring cutter is owing to from endoporus feed, will reprocess stepped hole, because stepped hole size is greater than endoporus, so, in process, boring bar can only be entered endoporus, hilted broadsword head and clamping device can only assemble at another side, and after having assembled, backward feed is processed.

In fact, the inside of another side workpiece often, operating space is narrow, is not easy to assemble accurately, and difficulty of construction is very large.

Moreover, in practical operation, boring cutter carries roughing and accurately machined task simultaneously, that is, boring cutter is deep in the crude green body face in prefabricated stepped hole hole at first, carry out roughing, and then dismantle cutter head, move back boring bar, with measurer measured hole footpath, enter boring bar again, refill and join cutter head (simultaneously adjusting the height of cutter head), again bore hole, progressively improve machining accuracy.Process a stepped hole, the stepped hole that especially required precision is higher, just need repeatedly to repeat said process.

According to foregoing description, can find out, the manufacturing process of present stage also exists following defect:

1. processed interior hole size and dimensional accuracy are determined by the height of hilted broadsword head completely, and the adjustment of hilted broadsword grease head highness relies on the manual hammer of operator to knock operation completely, and make higher to the requirement of operator on the one hand, the dimensional stability of product is also poor on the other hand; Especially, under the narrow condition in operating space, difficulty increases especially greatly,

2. repeated multiple times loaded down with trivial details procedure makes production efficiency extremely low, also increases the work load of workman simultaneously;

3., due to the rotational trajectory of hilted broadsword head, be subject to the rotation winding degree of boring bar and round restriction of beating, so the endoporus circularity index processed is undesirable all the time, this is a kind of structural defect.

In order to overcome above-mentioned defect, the simplest way uses high-precision numerical control borer, but numerical control borer is expensive, how to utilize existing equipment to carry out the technological transformation of low cost, thus economizes on resources, and is the direction that we study.

Utility model content

The purpose of this utility model is to provide the anti-reamer of high, the time saving and energy saving endoporus of a kind of machining accuracy to make up prior art deficiency.

The utility model is the technical scheme adopted that achieves the goal: the anti-reamer of endoporus, comprises reamer bar, and reamer bar front end is tapering mounting rod, it is characterized in that: reamer bar rear end is mounting rod, and on mounting rod, cover is given up the throne nut, reamer body and hold down gag;

Give up the throne between nut and mounting rod is threaded engagement;

The cylindrical of reamer body is dispersed with at least 4 cutter heads; Reamer body inner periphery has groove, and the key on groove and mounting rod coordinates and realizes transmission;

Reamer body inner circle and mounting rod are taper fit;

Optimize, described hold down gag comprises clamp nut and pad, is threaded engagement between clamp nut and mounting rod.

Good effect of the present utility model is: adopt the mode that multiple cutter head reams, and without the need to manually calculating and adjusting, greatly reduces the requirement to operator and labour intensity; Production efficiency is high, one-shot forming, no longer needs repeatedly withdrawing, measurement and dismounting adjustment cutter, shortens process time; Overcoming rotation winding degree to greatest extent beats on the impact of Product Precision with circle, more easily obtains higher machining accuracy, stable size and good surface quality.In addition, the more important thing is, this cutter need not change the structure of original boring machine, makes old-fashioned boring machine can complete high-precision processing tasks, has saved resource.

Accompanying drawing explanation

Fig. 1 is the structural representation of original boring bar.

Fig. 2 is structural representation of the present utility model.

Fig. 3 is the structural representation of reamer bar.

Fig. 4 is the structural representation of reamer body.

Fig. 5 is the structural representation of nut of giving up the throne.

Fig. 6 is the structural representation of clamp nut.

Fig. 7 is the structural representation of opening pad.

Detailed description of the invention

Embodiment:

The definition of anti-reamer is the cutter that the heavy caliber stepped hole at internal hole depth place carries out backward feed processing.

In the drawings: 1 is reamer bar, 2 is taper rod, and 3 is mounting rod, and 4 is nut of giving up the throne, and 5 is reamer body, and 6 is opening pad, and 7 is clamp nut, and 8 is groove, and 9 is key, and 10 is cutter head, and 11 is endoporus, and 12 is stepped hole.

Prefabricated stepped hole 12 (in advance casting or bit bore), first can carry out boring inner face with traditional boring cutter, carry out roughing: traditional boring cutter only has a cutter head a through bar portion, the height of protrusion determines processing dimension, is fixed by fixture b.Protrusion height is adjustable.

Be installed in boring machine by taper rod 2 again, realize the moment of torsion transmission of boring spindle and reamer bar 1, the structure of taper rod 2 is identical with the taper rod of original boring cutter, so can be directly used on existing boring machine.

During assembling, the workpiece in frock moves axially, and makes mounting rod 3 go deep in endoporus 11, stepped hole 12, after desired location, then is enclosed within mounting rod 3 from will give up the throne nut 4, reamer body 5, opening pad 6, clamp nut 7 of the another side of stepped hole 12.

Installation process is: 1. nut 4 of giving up the throne is screwed on mounting rod 3 by screw thread; 2. reamer body 5 inner circle and mounting rod 3 are taper fit, to ensure concentricity, meanwhile, realize the cooperation transmission of key 9 and groove 8; 3. clamp nut and mounting rod 3 screw thread spin, and coordinate with opening pad 6, realize fixing, to ensure machining accuracy reamer body 5.

During use, mounting rod 3 rotates, and moment of torsion passes to reamer body 5 by the cooperation of key 9 and groove 8, achieves the rotation of reamer body 5 and cutter head 10.

The quantity of cutter head 10 can design as required.

The cutting edge front end of cutter head 10 is gradient, is convenient to the stepped hole 12 after oppositely entering roughing.After the cutter head 10 of High Rotation Speed enters stepped hole 12, just can be disposable by shaping for hole articulation.

The stepped hole 12 processed, its inner aperture is determined by the excircle dimension of cutter head 10, as long as cutter head 10 accurately grinds into setting size, that is with regard to the size of the disposable accurate control endoporus of energy, without the need to there being the step of loaded down with trivial details artificial dismounting and adjustment cutter again.

Dismounting cutter: after machining, the frock of workpiece is moved, make mounting rod 3 be positioned at suitable position, with the groove on Special pull palm dynamic pressure jack panel 7, make it oppositely to revolve and exit mounting rod 3; Radial direction takes off opening pad 6; Move the groove of giving up the throne on nut 4 again with Special pull palm, make it oppositely to revolve to move back, reamer body 5 is supported out mounting rod 3, the reset of reamer bar 1 can be realized.

No matter can find out, be assembling process or the unloading process of cutter, as long as use one spanner, just can easyly smoothly complete, and, in said process, without the need to considering required precision, because required precision is all embodied in the design of parts, without the need to manual intervention.

Claims (2)

1. the anti-reamer of endoporus, comprises reamer bar, and reamer bar front end is tapering mounting rod, it is characterized in that: reamer bar rear end is mounting rod, and mounting rod overlaps give up the throne nut, reamer body and hold down gag;

Give up the throne between nut and mounting rod is threaded engagement;

The cylindrical of reamer body is dispersed with at least 4 cutter heads; Reamer body inner periphery has groove, and the key on groove and mounting rod coordinates and realizes transmission;

Reamer body inner circle and mounting rod are taper fit.

2. the anti-reamer of endoporus according to claim 1, is characterized in that: described hold down gag comprises clamp nut and pad, is threaded engagement between clamp nut and mounting rod.