CN201201059Y

CN201201059Y - Ultra-deep blind hole boring cutter rod

Info

Publication number: CN201201059Y
Application number: CNU2008200676086U
Authority: CN
Inventors: 赵小红; 郑红海; 徐国阳; 赵正国
Original assignee: NATIONAL XIANFENG MACHINE FACTORY
Current assignee: NATIONAL XIANFENG MACHINE FACTORY
Priority date: 2008-06-05
Filing date: 2008-06-05
Publication date: 2009-03-04
Anticipated expiration: 2018-06-05

Abstract

The utility model relates to a machining tool, in particular to an ultra-deep blind hole boring tool bar. The boring tool bar comprises a hollow tool bar, wherein the top end of the tool bar is provided with a tool bit. The boring tool bar is characterized in that a counterweight body is fixed on the tail part of the tool bar; the counterweight body and the tool bar are connected by use of a threaded; the middle part of the tool bar is provided with a feeler block; the feeler block and the tool bar are connected by use of a screw; and a cooling spray pipe is arranged in a hollow bar of the tool bar. The boring tool bar adopts a combined-type structure, and can machine ultra-deep blind holes (1600 mm). When the boring tool bar machines under the circumstance that a cantilever is too long, good rigidity can still be guaranteed, and the dimensional accuracy and apparent quality of products are good. In addition, the boring tool bar also has the advantages of easy storage, convenient machining and chip removal and good tool cooling performance. The boring tool bar can be widely applied to the production and processing of similar ultra-deep blind hole parts.

Description

Super dark blind hole boring cutter bar

Technical field

The utility model relates to machining tool, specifically a kind of super dark blind hole boring cutter bar.

Prior art

The processing of super dark blind hole is a difficult problem in the field of machining, because the knife bar jib-length is long and own wt is heavy when the super dark blind hole of processing, cause lever structure rigidity poor, in the process of cutting, can produce the phenomenon of knife bar chatter, cutter relieving, have a strong impact on working (machining) efficiency and product quality.Solution is to adopt special-purpose shockproof boring cutter bar preferably at present, and present stage is domestic does not still have the shockproof boring cutter bar production of the super dark blind hole of this kind special use at present.What abroad adopt is whole alloy boring cutter bar, and uses two boring cutter seats to carry out clamping, and process equipment is proposed very high requirement.Adopt the special-purpose boring cutter bar of external import, then must be used special equipment and anchor clamps, cost is high.Therefore manufacturing and designing the dark blind hole boring cutter bar of a kind of special use realizes that the processing of super dark blind hole is highly profitable.

Summary of the invention

The purpose of this utility model is exactly phenomenons such as the chatter that occurs easily during at the super dark blind hole of processing, cutter relieving, provides a kind of super dark blind hole boring cutter bar after boring cutter bar commonly used has been carried out improving, and it has solved the processing difficult problem of super dark blind hole.

The technical solution of the utility model is achieved in that it comprises a hollow knife bar, and the top of knife bar is provided with cutter head, it is characterized in that: the afterbody of knife bar is fixed with balance weight body.

The utility model technical scheme preferably is that described balance weight body is threaded with the knife bar employing;

Feeler block is equipped with at described knife bar middle part, adopts screw to be connected between feeler block and the knife bar; In the hollow stem of described knife bar cooling spray pipe is housed.

The utility model adopts fabricated structure, can realize super dark blind hole (1600mm) processing.Boring cutter bar is processed under the long situation of cantilever, still can guarantee rigidity preferably, and product size precision and apparent mass are better, also has simultaneously to be easy to deposit, and the processing chip removal is convenient, the advantage that the cutter cooling performance is good.It can be widely used in the production and processing of similar super dark blind hole part.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is a cutaway view of the present utility model

Fig. 3 is another embodiment figure of the present utility model

Fig. 4 is another embodiment figure of the present utility model

The specific embodiment

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

As shown in Figure 1, the utility model comprises a hollow knife bar 1, and the top of knife bar 1 is provided with cutter head 2, and the afterbody of knife bar 1 is fixed with balance weight body 3, and balance weight body 3 adopts with knife bar 1 and is threaded; Feeler block 4 is equipped with at knife bar 1 middle part, adopts screw to be connected between feeler block 4 and the knife bar 1; Cooling spray pipe 5 is housed in the hollow stem of described knife bar.

During work, knife bar is fixed on the lathe middle carriage by boring cutter seat 6.For the distortion that prevents that boring cutter bar is heavier because of own wt and cutting force produces, install the balance that balance weight body keeps knife bar additional at the knife bar afterbody.Bore hole needs to carry out in the different degree of depth in processing endoporus process, knife bar processing operation length variations is big, operating environment when adapting to various hole depth, balance weight body adopts with knife bar and is threaded, the interface relationship unanimity, can increase and decrease adjusting to balance weight body at different outstanding length and working process parameters, guarantee the dynamic balancing of knife bar, prevent that knife bar from producing the phenomenon of rigid deformation and shake cutter.Above measure has not only effectively alleviated the chatter of knife bar, and the phenomenon odds that knife etc. can't be cut reduces greatly, and has convenient warehouse-in and deposit with frock and safeguard simple advantage.

Its operation principle is: (length range 0mm～800mm) process endoporus in order to guarantee the dynamic balancing of boring cutter bar, at the balancing weight of its afterbody dress constant weight, sees Fig. 2 to part afterbody endoporus earlier boring cutter bar to be stretched out short length; Because the boring cutter bar jib-length is short, can bear bigger cutting force, fully improves working (machining) efficiency; And then adjust the length that boring cutter bar stretches out earlier, (length range 800mm～1200mm) process at this moment, continues to install additional balancing weight at its afterbody, guarantees to add the dynamic balancing in man-hour, sees Fig. 3 to the endoporus in the middle part of the part; The length adjustment that boring cutter bar is stretched out is to 1600mm at last, to part in endoporus (the length range 1200mm～1530mm) process of portion, install the balancing weight of approrpiate wts additional at its afterbody, see Fig. 4, use boring cutter bar that whole endoporus is carried out fine finishining, guarantee that endoporus processing back nothing connects tool marks and step.In addition, the boring cutter bar equidistant place that is separated by at the middle part also is equipped with feeler block, has solved in dark blind hole to add the problem that can't carry out tool setting man-hour because of the device travel deficiency.Adopt screw to be connected between feeler block and the knife bar, utilize matching relationship to guarantee the accuracy of tool setting, the correspondence position that is installed in knife bar when processing the endoporus of different depth gets final product.

Claims

1, a kind of super dark blind hole boring cutter bar, it comprises a hollow knife bar, the top of knife bar is provided with cutter head, it is characterized in that: the afterbody of knife bar is fixed with balance weight body.

2, super dark blind hole boring cutter bar according to claim 1 is characterized in that: described balance weight body adopts with knife bar and is threaded.

3, super dark blind hole boring cutter bar according to claim 1 is characterized in that: feeler block is equipped with at described knife bar middle part, adopts screw to be connected between feeler block and the knife bar.

4, according to claim 1,2 or 3 described super dark blind hole boring cutter bars, it is characterized in that: in the hollow stem of described knife bar cooling spray pipe is housed.