CN208895316U - A kind of flat tool of anti-bits ream - Google Patents

Abstract

The utility model discloses a kind of flat tools of anti-bits ream, it belongs to machine tool field, including knife bar, and the lower part of the knife bar is equipped with square through hole, white steel knife are inserted in the square through hole, axially one bolt of setting fastens the white steel knife for the knife bar bottom centre；The knife bar bottom is additionally provided with bearing, the Bearing outer is equipped with bearing cap, gland is equipped with above the bearing cap, the gland and the knife bar clearance fit, boss is equipped with above the gland, knife bar corresponding with boss bottom is equipped with the groove matched with the boss, iron filings can be effectively prevent to enter in bearing using above structure the utility model.

Description

A kind of flat tool of anti-bits ream

Technical field

The utility model relates to machine tool fields, and in particular to a kind of flat tool of anti-bits ream.

Background technique

During to backing plate drilling and flat ream, due to the diversity in aperture, it can be replaced according to processing request different Knife bar, since knife bar itself makes trouble, the cost of manufacture of ream flat cutter bar is high；On the other hand due to answering producer to require some Stepped hole is different, while having strict requirements to its inner hole quality, and traditional machining tool can be internal when to this kind of hole machined Hole arm causes to wear, and influences processing quality, and so use for a long time and will also result in influence to the precision of knife bar.

The flat tooling of known our company's publication CN207372442U press machine backing plate ream in the use process in later period, Service life have the defects that it is certain, for convenience of processing, the mode that the gland in tooling is often gap-matched with knife bar, and The structure is easy to enter iron filings in bearing by gap, influences the service life of bearing, although with gland and knife bar spiral shell The mode of line connection can improve, but in use due to bearing cap and gland, gland can generate loosening, and Micro-displacement, which may occur, for bearing cap causes iron filings to enter in bearing by gap between the two, causes one to practical application A little troubles.

In view of the above-mentioned problems of the prior art, the design and use warp of the utility model combination related fields many years It tests, is aided with too strong professional knowledge, manufactured and designed a kind of flat tool of anti-bits ream, to overcome drawbacks described above.

Utility model content

For the problems of in the prior art, the anti-flat tool of bits ream of one kind provided by the utility model can be effective Prevent iron filings from entering in bearing.

To achieve the goals above, the technical solution adopted in the utility model is as follows: a kind of flat tool of anti-bits ream, including knife Bar, the lower part of the knife bar are equipped with square through hole, and white steel knife is inserted in the square through hole, and the knife bar bottom centre is axial A bolt is arranged to fasten the white steel knife；

The knife bar bottom is additionally provided with bearing, and the Bearing outer is equipped with bearing cap, is equipped with gland above the bearing cap, The gland and the knife bar clearance fit, the gland top are equipped with boss, and knife bar corresponding with boss bottom is equipped with The groove matched with the boss.

It is inclined surface that the gland is down-set from boss root as a preferred technical solution,.

The diameter of the bearing cap is greater than the diameter of the knife bar lower part as a preferred technical solution, is less than described white The length of steel knife.

The knife bar bottom is equipped with double step as a preferred technical solution, and the step of bottom is combined with the bearing, on The step in portion is combined with the gland.

The utility model has the beneficial effect that

1. the utility model is cooperated using boss and groove, avoid iron filings by above gland into gland and knife bar Gap, so that traveling further into bearing influences the service life of bearing.

2. the setting of inclined surface ensure that iron filings can quickly slide, avoid traditional structure for a long time on gland with making With the gap for entering gland and knife bar.

3. the length that the utility model only needs to change white steel knife can meet the flat processing of ream in any aperture, and white steel knife Fastening stablize, it is convenient for disassembly and assembly, it is convenient for safeguarding.

4. being in rolling contact using bottom bearing lid with inner hole, the friction damage to inner hole wall is not only reduced, and reduce Damage to cutter bar body, improves the service life of knife bar.

5. protecting using compression bar and bearing block to bearing, the leakproofness of bearing is improved, avoids iron filings to bearing Influence, improve service precision indirectly.

6. entire tool structure is simple, easy for operation, there is very high popularizing value.

Detailed description of the invention

Fig. 1 is a kind of cross-sectional view of anti-bits flat tool of ream.

In figure: the white steel knife of 1-, 2- knife bar, 3- gland, 4- bearing, 5- bearing cap, 6- bolt, 21- groove, 31- boss.

Specific embodiment

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.

As shown in Figure 1, a kind of flat tool of anti-bits ream, including knife bar 2, the lower part of knife bar 2 are equipped with square through hole, square through hole It is inside inserted with white steel knife 1, using white steel knife 1 to the flat processing of backing plate hole ream, white steel knife 1 selects white steel bar to make, effect at low cost Good, axially setting one bolt, 6 dialogue steel knife 1 fastens 2 bottom centre of the utility model knife bar, and positioning stablity is convenient for disassembly and assembly, is convenient for Maintenance.

2 bottom of the utility model knife bar is additionally provided with bearing 4, is equipped with bearing cap 5 outside bearing 4, can also be played using bolt 6 The effect that protection bearing cap 5 is fallen, is in rolling contact with inner hole using bottom bearing lid 5, not only reduces the friction to inner hole wall Damage, and the damage to 2 ontology of knife bar is reduced, improve the service life of knife bar 2.The diameter of bearing cap 5 is preferably greater than The diameter of 2 lower part of knife bar not only facilitates and positions to bearing 4, but also do not influence to process, bearing cap 5 less than the length of white steel knife 1 Top is equipped with gland 3, and gland 3 is gap-matched with knife bar 2, and boss 31, knife bar corresponding with boss 31 are equipped with above gland 3 2 bottoms are equipped with the groove 21 matched with boss 31, and this configuration avoids iron filings by entering gland 3 and knife bar 2 above gland 3 Gap influence the service life of bearing 4 to travel further into bearing 4.

It is inclined surface that the utility model gland 3 is down-set from 31 root of boss, avoids traditional structure for a long time in gland 3 On with the gap used into gland 3 and knife bar 2.

2 bottom of the utility model knife bar is equipped with double step, and the step of bottom is combined with bearing 4, and the step on top is combined with Gland 3 guarantees the compact and intensity of total using above structure Reasonable Orientation.

It should be appreciated that the purposes of these embodiments is merely to illustrate the utility model and is not intended to limitation the utility model Protection scope.In addition, it should also be understood that, those skilled in the art can be right after having read the technology contents of the utility model The utility model does various change, modification and/or variation, all these equivalent forms equally fall within right appended by the application and want Seek book within the limits of the protection.

Claims (4)

1. a kind of flat tool of anti-bits ream, including knife bar, the lower part of the knife bar is equipped with square through hole, plugs in the square through hole There is white steel knife, axially one bolt of setting fastens the white steel knife for the knife bar bottom centre；

The knife bar bottom is additionally provided with bearing, and the Bearing outer is equipped with bearing cap, and gland is equipped with above the bearing cap, special Sign is: the gland and the knife bar clearance fit, is equipped with boss, knife bar corresponding with boss bottom above the gland Portion is equipped with the groove matched with the boss.

2. the anti-flat tool of bits ream of one kind according to claim 1, it is characterised in that: the gland is from boss root to dividing into It is set to inclined surface.

3. the anti-flat tool of bits ream of one kind according to claim 1, it is characterised in that: the diameter of the bearing cap is greater than described The diameter of knife bar lower part, less than the length of the white steel knife.

4. the anti-flat tool of bits ream of one kind according to claim 1, it is characterised in that: the knife bar bottom is equipped with double step, The step of bottom is combined with the bearing, and the step on top is combined with the gland.