CN2434097Y

CN2434097Y - Improved pneumatic grinding polisher

Info

Publication number: CN2434097Y
Application number: CN00246166U
Authority: CN
Inventors: 孙永勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-11
Filing date: 2000-08-11
Publication date: 2001-06-13
Anticipated expiration: 2010-08-11

Abstract

The utility model relates to an improved pneumatic grinding polisher, which comprises a casing, a pneumatic driving mechanism and a grinding mechanism. The pneumatic driving mechanism and the grinding mechanism are arranged in the casing; a dust-proof sleeve is arranged between a top surface of a middle section of a shaft center and a bearing in a seat of a lower bearing, and the outer edge of the dust-proof sleeve extends upwards to the point of the seat of the lower bearing to keep a minute gap with the seat of the lower bearing to cause air which flows into the seat of the lower bearing to be discharged outwards to enable the dust outside the dust-proof sleeve not to enter the dust-proof sleeve to achieve double efficacy of keeping normal operation and prolonging the service life of the bearing.

Description

Improved pneumatic abrasive sand ray machine

The utility model relates to a kind of lapping device, relates in particular to a kind of improved pneumatic abrasive sand ray machine that can prolong bearing service life and can not interfere the grinding mechanism running.

The pneumatic abrasive sand ray machine of commonly using mainly is the eccentric block rotation that drives a grinding mechanism with the axle center of a pneumatic drive mechanism, and then the abrasive disk that drives this eccentric block bottom rotates, and on this step, establish an annular recess, and be equipped with the flexible boot seal of a summary tool.This dirt-proof boot is a hollow sleeve, and in the lower end of its upright anchor ring gradually to inner inclination, make the lower end of upright anchor ring become an inside oblique anchor ring, this upright anchor ring then is to be placed on bottom end bearing seat flange periphery, and the bottom of oblique anchor ring is the place, vertical surface one slit that is positioned at apart from the eccentric block interlude, and make the angle end of oblique anchor ring touch the eccentric block end face, powerful gyration airflow in the unlikely revolution space that is subjected between eccentric block and shell in this space is driven, scurry in the lower bearing to avoid powder.

See also Fig. 6, because there are the gap in step 81 and 82 in axle center, and bearing 83 also has the gap for circulation of air, therefore, drive the pressure-air of pneumatic drive mechanism running, just can be from step 81 and axle center 82 gap flow into step 81, flow into through bearing 83 in the space in the dirt-proof boot 84, again by flowing out between the angle end of the oblique anchor ring 841 of dirt-proof boot 84 and eccentric block 85 end faces.And when discharging, air can produce the pushing active force, make the oblique anchor ring 841 that omits the flexible dirt-proof boot 84 of tool can touch the end face of eccentric block 85, and under the lasting friction of the angle end of the dirt-proof boot 84 oblique anchor rings 841 of this rubber system, not only the running speed of eccentric block 85 can reduce, the oblique anchor ring 841 of dirt-proof boot 84 also can be worn away, make the angle end and the gap between eccentric block 85 end faces of dirt-proof boot 84 oblique anchor rings 841 strengthen, powder is invaded in the bearing 83, influence the service life of bearing 83.

Main purpose of the present utility model is, the above-mentioned problem of commonly using the structure existence for solution provides a kind of improved pneumatic abrasive sand ray machine, because this dirt-proof boot is located between the interior bearing of end face and the step of interlude in axle center, and the outer rim of this dirt-proof boot is to extend upwardly to the step place, and and step between keep a small gap, the air that flows in the step can be discharged, and the powder that the dirt-proof boot outer grinding produces can not scurried in the bearing of step, does not disturb running and prolongs the bearing double effects in service life and reach maintenance.

The purpose of this utility model is realized by following technical scheme.

A kind of improved pneumatic abrasive sand ray machine, comprise shell, pneumatic drive mechanism and grinding mechanism, described pneumatic drive mechanism and grinding mechanism are located in the shell, this shell has an air intake duct and an exhaust duct, pneumatic drive mechanism is to insert a rotary body with blade in an annular wall, and utilize air admission hole and steam vent on the annular wall to make the rotary body rotation, and on annular wall, each has the bearing block of bearing the lower end in conjunction with an inside, and in rotary body and last, be inserted in an axle center in two bearings down, the bottom in this axle center is the eccentric block of grinding mechanism, this eccentric block top then is the interlude coaxial with the axle center, be provided with the dirt-proof boot of a hollow between this interlude and the step, its characteristic is: described dirt-proof boot is located between the end face and the bearing in the step of interlude, this dirt-proof boot is inserted and put fixing by the interior ring of the end face of interlude and bearing, the outer shroud place of the corresponding bearing of this dirt-proof boot has a recess to avoid unnecessary friction, and the outer rim of this dirt-proof boot extends upwardly to the step bottom surface, and and step between keep a small gap.

The purpose of this utility model can also further realize by following technical measures.

Aforesaid improved pneumatic abrasive sand ray machine, wherein dirt-proof boot is by the sheet metal punch forming.

Aforesaid improved pneumatic abrasive sand ray machine wherein is provided with a packing ring between dirt-proof boot and bearing inner ring, the external diameter of this packing ring is the internal diameter less than bearing outer ring.

Aforesaid improved pneumatic abrasive sand ray machine, wherein the outer rim of dirt-proof boot is the place, bottom surface that extends to step.

Aforesaid improved pneumatic abrasive sand ray machine, wherein the bottom surface of step has the groove of a ring-type, and the outer rim of this dirt-proof boot is to extend in the groove, and the gap small with all intermarginal maintenance one of groove.

The powder that the utility model can make the dirt-proof boot outer grinding produce can not scurried in the bearing of step, does not disturb running and prolongs the bearing double effects in service life and reach maintenance.

For further understanding technology contents of the present utility model, characteristics and effect, exemplify following preferred embodiment now, and conjunction with figs. is described in detail as follows:

Fig. 1 is a planar structure schematic diagram of the present utility model.

Fig. 2 is the structural representation of the utility model step and dirt-proof boot part.

Fig. 3 is the schematic diagram that the utility model uses the mesohigh air flow.

Fig. 4 is the structural representation of the utility model second embodiment.

Fig. 5 is the structural representation of the utility model the 3rd embodiment.

Fig. 6 commonly uses the schematic diagram that pneumatic abrasive sand ray machine uses mesohigh air pushing dirt-proof boot.

See also Fig. 1, Fig. 2, the improved pneumatic abrasive sand ray machine of present embodiment is to be provided with a pneumatic drive mechanism 2 and a grinding mechanism 3 in a shell 1, and this shell 1 has an air intake duct 11 and an exhaust duct 12.Wherein, this pneumatic drive mechanism 2 is to insert a rotary body 23 with blade 22 in an annular wall 21, and utilize air admission hole 211 and steam vent 212 on the annular wall 21 to make rotary body 23 rotations, and the upper and lower end in annular wall 21 respectively has the upper and

lower bearing block

26,27 of

bearing

24,25 in conjunction with an inside, and is inserted in an axle center 28 in rotary body 23 and two bearings 24,25.The bottom in this axle center 28 is the eccentric block 31 of grinding mechanism 3, and these eccentric block 31 tops then are the interlude 32 coaxial with axle center 28, are provided with a dirt-proof boot 4 by the stamping forming hollow of sheet metal between this interlude 32 and the step 27.This dirt-proof boot 4 is located at 25 on bearing in the end face of interlude 32 and the step 27, this dirt-proof boot 4 is inserted and put fixing by the end face of interlude 32 and a packing ring 41 of being located at interior ring 251 belows of bearing 25, the external diameter of this packing ring 41 is less than the internal diameter of bearing 25 outer rings 252, and outer shroud 252 places of these dirt-proof boot 4 corresponding bearings 25 have a recess 42 to avoid unnecessary friction, and the outer rim of this dirt-proof boot 4 is low 271 places, bottom surface that extend upwardly to step 27, and and 271 of this bottom surfaces of step 27 keep a small gap.

See also Fig. 3, because this dirt-proof boot 4 is use the sheet metal punch forming, so the pushing strength of this dirt-proof boot 4 can not discharge because of pressure-air the time, and produce the problem of being out of shape.Moreover, by stamping forming dirt-proof boot 4 its controlled size precision of sheet metal within a suitable error, generally speaking, this dirt-proof boot 4 can be made into and 27 of steps remain on 0.05mm with interior gap, the powder that is produced in the grinding work can not flown away with air-flow to be entered in the dirt-proof boot 4, influence the service life of bearing 25, and the air that enters in the step 27 can smooth and easyly be discharged, and can not interfere the running of eccentric block 32, not interfere running and prolong the bearing double effects in 25 service lifes so can reach maintenance.

See also shown in Figure 4, it is second embodiment of the present utility model, wherein, the bottom surface 271 of step 27 has the groove 273 of a ring-type, and the outer rim of this dirt-proof boot 4 is to extend in the groove 273, and the gap small with all intermarginal maintenance one of groove 273 whereby, can reach the identical effect with aforementioned first embodiment.

See also Fig. 5 again, it is the 3rd embodiment of the present utility model, and wherein the outer rim of this dirt-proof boot 4 is another 272 places, higher bottom surface that extend to step 27, and and this bottom surface 272 between keep a small gap, whereby, can reach identical effect with aforementioned first embodiment.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. an improved pneumatic abrasive sand ray machine comprises shell, pneumatic drive mechanism and grinding mechanism,

Described pneumatic drive mechanism and grinding mechanism are located in the shell, this shell has an air intake duct and an exhaust duct, pneumatic drive mechanism is to insert a rotary body with blade in an annular wall, and the bearing block that respectively has bearing at the upper and lower end of annular wall in conjunction with an inside, and in rotary body and upper and lower two bearings, be inserted in an axle center, the bottom in this axle center is the eccentric block of grinding mechanism, this eccentric block top then is the interlude coaxial with the axle center, be provided with the dirt-proof boot of a hollow between this interlude and the step, its characteristic is:

Described dirt-proof boot is located between the end face and the bearing in the step of interlude, this dirt-proof boot is inserted and put fixing by the interior ring of the end face of interlude and bearing, the outer shroud place of the corresponding bearing of this dirt-proof boot has a recess, and the outer rim of this dirt-proof boot extends upwardly to the step bottom surface, and and step between keep a small gap.

2. improved pneumatic abrasive sand ray machine according to claim 1 is characterized in that described dirt-proof boot is by the sheet metal punch forming.

3. improved pneumatic abrasive sand ray machine according to claim 1 is characterized in that be provided with a packing ring between described dirt-proof boot and bearing inner ring, the external diameter of this packing ring is the internal diameter less than bearing outer ring.

4. improved pneumatic abrasive sand ray machine according to claim 1 is characterized in that, the outer rim of described dirt-proof boot is the place, bottom surface that extends to step.

5. improved pneumatic abrasive sand ray machine according to claim 1 is characterized in that the bottom surface of described step has the groove of a ring-type, and the outer rim of this dirt-proof boot is to extend in the groove, and the gap small with all intermarginal maintenance one of groove.