CN209273201U - Pneumatic grinding head easy to assemble - Google Patents

Abstract

The utility model discloses a kind of Pneumatic grinding head easy to assemble, including outer housing, inner housing, core and swivel head, the inner housing is located in outer housing, the core is rotatably set in inner housing, the swivel head and core installation connect, the inner and outer wall of the inner housing is cylindrical surface, it the central axis on inner housing outer wall cylindrical surface and the centerline axis parallel on inner housing inner wall cylindrical surface and is not overlapped, the inner housing outer wall is connect with outer housing inner wall close-fitting, the gas outlet and the second cavity penetrate through, the lower shaft portion end of core is connected with a rotation shell, the swivel head is connect with mounting base, the mounting base, the central axis of bearing and swivel head is overlapped.The setting of the utility model pin, further enhance the stability connected between top chock and inner housing, it prevents bearing block from situations such as deviation occur and influences the rotation angle of core, guarantee that core drives swivel head to rotate around vertical direction, to guarantee the precision polished.

Description

Pneumatic grinding head easy to assemble

Technical field

The utility model relates to a kind of Pneumatic grinding heads easy to assemble, belong to Electronic product precision part processing technique field.

Background technique

Surface structure part/accessory of most of mobile phone, laptop is using metal material, metal material currently on the market Molding mainly have a modes such as aluminium extruded, die casting, forging and stamping, no matter which kind of molding mode, CNC machining center is both needed to after molding and is added Work, due to that, there are the bad orders phenomenon such as knife mark, scuffing, need to be passivated to workpiece, sanding and polishing, spray in CNC process A series of appearance reprocessing such as painting, anodic oxidation.And in the grinding process, the consumption of grinding head is very serious, needs often Replacement, had not only reduced the efficiency of production but also had improved the cost of processing.

Utility model content

The purpose of the utility model is to provide a kind of Pneumatic grinding head easy to assemble, which is set It sets, further enhances the stability connected between top chock and inner housing, prevent bearing block from situations such as deviation occur and shadow The rotation angle of core is rung, guarantees that core drives swivel head to rotate around vertical direction, to guarantee the precision of polishing.

In order to achieve the above objectives, the technical solution adopted in the utility model is: a kind of Pneumatic grinding head easy to assemble, including outer Shell, inner housing, core and swivel head, the inner housing are located in outer housing, and the core is rotatably set to inner housing Interior, the swivel head and core installation connect；

The inner and outer wall of the inner housing is cylindrical surface, the central axis and inner casing on inner housing outer wall cylindrical surface It the centerline axis parallel on internal wall cylindrical surface and is not overlapped, so that the wall thickness of inner housing is gradually incremented by upwards in semi-circumference, There are two annular grooves disposed in parallel for tool on the inner housing outer wall, to form the first parallel protrusion on interior housing exterior walls Portion, the second lug boss and third protrusion portion, the inner housing outer wall are connect with outer housing inner wall close-fitting, thus outer housing with it is interior The first cavity and the second cavity are formed between two annular grooves of shell, if being provided on the intracorporal annular groove inner wall of first chamber Dry air inlet is provided with several air outlets on the intracorporal annular groove inner wall of the second chamber；

The central axis of the core is overlapped with the central axis on inner housing outer wall cylindrical surface, and the core includes upper axis Portion, driving portion and lower shaft portion, this core are rotatably installed in outer housing by top chock, step, the upper axis It holds a lower surface and inner housing top surface connects, the step is set in outer housing and is located at below inner housing, institute It states and is circumferentially equidistantly provided with several blade grooves on core, driving blade, the outer housing have been respectively embedded into this blade groove On be provided with air inlet and air outlet, the air inlet and the first cavity penetrate through, and the gas outlet and the second cavity penetrate through；

The lower shaft portion end of the core is connected with a rotation shell, has a mounting base in this rotation shell, this mounting base is logical It crosses a bearing to be rotatably installed in rotation shell, the swivel head is connect with mounting base, the mounting base, bearing and swivel head Central axis be overlapped, the central axis of the swivel head is not overlapped with the central axis of core lower shaft portion；

The step further comprises the lower bearing in pedestal portion and insertion pedestal portion, on the inner wall in the pedestal portion With an annular groove, this annular groove has been embedded in an annular baffle, this annular baffle is located at below lower bearing and and lower axle Hold contact connectio.

Further improved scheme is as follows in above-mentioned technical proposal:

1. in above scheme, in the upper axle portion insertion top chock of the core, the lower shaft portion of the core is embedded in lower axle It holds in seat, the driving part is in inner housing.

2. in above scheme, the blade groove is located on the driving portion of core.

3. in above scheme, the central axis of the inner housing outer wall cylinder is located in inner housing inner wall.

4. in above scheme, several air inlets are two bar shaped air inlets disposed in parallel.

5. in above scheme, several air outlets are three bar shaped air outlets disposed in parallel, and three bar shaped outlet air Mouth is staggered in the vertical direction.

6. in above scheme, being connected between the top chock and inner housing by a bolt.

7. in above scheme, the number of several blade grooves is 4.

8. in above scheme, the lower shaft portion of the core is sequentially embedded step and rotation shell top, and passes through a pin Nail is connect with rotation shell.

9. in above scheme, there is a through-hole in the mounting base, and there is screw thread, the rotation on the inner wall of through-hole It is threadedly coupled in the through-hole of head top insertion mounting base and with mounting base.

Due to the application of the above technical scheme, the utility model has the advantage that compared with prior art

1, the combination settings of the utility model Pneumatic grinding head easy to assemble, inner and outer shell and core, clever structure, gas warp It crosses the first cavity and enters inner housing, blow driving blade, driving blade drives core rotation, is discharged using the second cavity, core The rotation of body drives swivel head rotation, realizes automatically grinding, and structure is simple, easy to use；In addition, the lower shaft portion end of its core It is connected with a rotation shell, there is a mounting base in this rotation shell, this mounting base is rotatably installed on rotation shell by a bearing Interior, the swivel head is connect with mounting base, and the central axis of the mounting base, bearing and swivel head is overlapped, the swivel head Central axis is not overlapped with the central axis of core lower shaft portion, is driven swivel head to rotate indirectly by rotation shell and bearing, is prevented There is the stuck situation of swivel head when excessive in lower amount of pressure, guarantees the flexible rotating of swivel head；And swivel head and driving swivel head The core out-of-alignment eccentric setting of rotation improves the fine of polishing so that will not leave behind the trajectory line of polishing in bruting process Degree.

2, the utility model Pneumatic grinding head easy to assemble, step further comprise in pedestal portion and insertion pedestal portion Lower bearing, there is an annular groove, this annular groove has been embedded in an annular baffle, this annular on the inner wall in the pedestal portion Baffle is located at below lower bearing and connects with lower bearing, and bearing is packed into the pedestal portion of bearing block, convenience pair using baffle The dismounting of bearing, when bearing loss needs replacing, it is only necessary to split out bearing from the lower section of grinding head, being not necessarily to will thereon The inner and outer shell separation of side avoids the case where dismantling and can not be fitted close completely, guaranteeing between inner and outer shell because of multiple The sealing effect of enclosure interior is further ensured that the stability to swivel head driving；In addition, its top chock and inner housing it Between connected by a bolt, the setting of pin further enhances the stability connected between top chock and inner housing, prevents There is situations such as deviation and influences the rotation angle of core in bearing block, guarantees that core drives swivel head around vertical direction rotation, To guarantee the precision of polishing.

Detailed description of the invention

Attached drawing 1 is the utility model Pneumatic grinding head partial structure sectional view one easy to assemble；

Attached drawing 2 is inner shell structure schematic diagram in the utility model Pneumatic grinding head easy to assemble；

Attached drawing 3 is the utility model Pneumatic grinding head partial structure sectional view two easy to assemble；

Attached drawing 4 is core structural decomposition diagram in the utility model Pneumatic grinding head easy to assemble；

Attached drawing 5 is the utility model Pneumatic grinding head China and foreign countries schematic diagram of housing structure easy to assemble.

In the figures above: 1, outer housing；2, inner housing；3, core；4, swivel head；5, annular groove；601, the first lug boss； 602, the second lug boss；603, third protrusion portion；8, the first cavity；9, the second cavity；101, air inlet；102, air outlet；11, Upper axle portion；12, driving portion；13, lower shaft portion；14, top chock；15, step；151, pedestal portion；152, lower bearing；16, Bolt；17, blade groove；18, driving blade；19, air inlet；20, gas outlet；22, shell is rotated；23, mounting base；24, bearing； 25, pin；36, annular baffle.

Specific embodiment

Embodiment 1: a kind of Pneumatic grinding head easy to assemble, including outer housing 1, inner housing 2, core 3 and swivel head 4, it is described Inner housing 2 is located in outer housing 1, and the core 3 is rotatably set in inner housing 2, and the swivel head 4 is installed with core 3 Connection；

The inner and outer wall of the inner housing 2 is cylindrical surface, the central axis on the 2 outer wall cylindrical surface of inner housing with it is interior It the centerline axis parallel on 2 inner wall cylindrical surface of shell and is not overlapped, so that the wall thickness of inner housing 2 is gradually passed upwards in semi-circumference Increase, there are two annular grooves 5 disposed in parallel for tool on 2 outer wall of inner housing, to form parallel the on 2 outer wall of inner housing One lug boss 601, the second lug boss 602 and third protrusion portion 603,2 outer wall of inner housing and 1 inner wall close-fitting of outer housing connect It connects, to form the first cavity 8 and the second cavity 9, first chamber between outer housing 1 and two annular grooves 5 of inner housing 2 It is provided with several air inlets 101 on 5 inner wall of annular groove in body 8, is provided on 5 inner wall of annular groove in second cavity 9 several Air outlet 102；

The central axis of the core 3 is overlapped with the central axis on 2 outer wall cylindrical surface of inner housing, and the core 3 includes upper Axle portion 11, driving portion 12 and lower shaft portion 13, this core 3 are rotatably installed on shell by top chock 14, step 15 In body 1,14 lower surface of top chock and 2 top surface of inner housing are connected, and the step 15 is set in outer housing 1 And it is located at 2 lower section of inner housing, several blade grooves 17 are circumferentially equidistantly provided on the core 3, in this blade groove 17 respectively It is embedded with driving blade 18, air inlet 19 and gas outlet 20, the air inlet 19 and the first cavity are provided on the outer housing 1 8 perforations, the gas outlet 20 and the second cavity 9 penetrate through；

13 end of lower shaft portion of the core 3 is connected with a rotation shell 22, has a mounting base 23 in this rotation shell 22, this Mounting base 23 is rotatably installed in rotation shell 22 by a bearing 24, and the swivel head 4 is connect with mounting base 23, the peace The central axis for filling seat 23, bearing 24 and swivel head 4 is overlapped, in the central axis and 3 lower shaft portion 13 of core of the swivel head 4 Mandrel line is not overlapped；

The step 15 further comprises the lower bearing 152 in pedestal portion 151 and insertion pedestal portion 151, the seat There is an annular groove, this annular groove has been embedded in an annular baffle 36, this annular baffle 36 is located on the inner wall in body portion 151 152 lower section of lower bearing is simultaneously connected with lower bearing 152.

The upper axle portion 11 of above-mentioned core 3 is embedded in top chock 14, and the lower shaft portion 13 of above-mentioned core 3 is embedded in step 15 Interior, above-mentioned driving portion 12 is located in inner housing 2；Above-mentioned blade groove 17 is located on the driving portion 12 of core 3；Outside above-mentioned inner housing 2 The central axis of wall cylinder is located in 2 inner wall of inner housing；Above-mentioned several air inlets 101 are two bar shaped air inlets disposed in parallel Mouthful；Above-mentioned several air outlets 102 are three bar shaped air outlets disposed in parallel, and three bar shaped air outlets are handed in the vertical direction Mistake setting；It is connected between above-mentioned top chock 14 and inner housing 2 by a bolt 16.

Embodiment 2: a kind of Pneumatic grinding head easy to assemble, including outer housing 1, inner housing 2, core 3 and swivel head 4, it is described Inner housing 2 is located in outer housing 1, and the core 3 is rotatably set in inner housing 2, and the swivel head 4 is installed with core 3 Connection；

The inner and outer wall of the inner housing 2 is cylindrical surface, the central axis on the 2 outer wall cylindrical surface of inner housing with it is interior It the centerline axis parallel on 2 inner wall cylindrical surface of shell and is not overlapped, so that the wall thickness of inner housing 2 is gradually passed upwards in semi-circumference Increase, there are two annular grooves 5 disposed in parallel for tool on 2 outer wall of inner housing, to form parallel the on 2 outer wall of inner housing One lug boss 601, the second lug boss 602 and third protrusion portion 603,2 outer wall of inner housing and 1 inner wall close-fitting of outer housing connect It connects, to form the first cavity 8 and the second cavity 9, first chamber between outer housing 1 and two annular grooves 5 of inner housing 2 It is provided with several air inlets 101 on 5 inner wall of annular groove in body 8, is provided on 5 inner wall of annular groove in second cavity 9 several Air outlet 102；

The central axis of the core 3 is overlapped with the central axis on 2 outer wall cylindrical surface of inner housing, and the core 3 includes upper Axle portion 11, driving portion 12 and lower shaft portion 13, this core 3 are rotatably installed on shell by top chock 14, step 15 In body 1,14 lower surface of top chock and 2 top surface of inner housing are connected, and the step 15 is set in outer housing 1 And it is located at 2 lower section of inner housing, several blade grooves 17 are circumferentially equidistantly provided on the core 3, in this blade groove 17 respectively It is embedded with driving blade 18, air inlet 19 and gas outlet 20, the air inlet 19 and the first cavity are provided on the outer housing 1 8 perforations, the gas outlet 20 and the second cavity 9 penetrate through；

13 end of lower shaft portion of the core 3 is connected with a rotation shell 22, has a mounting base 23 in this rotation shell 22, this Mounting base 23 is rotatably installed in rotation shell 22 by a bearing 24, and the swivel head 4 is connect with mounting base 23, the peace The central axis for filling seat 23, bearing 24 and swivel head 4 is overlapped, in the central axis and 3 lower shaft portion 13 of core of the swivel head 4 Mandrel line is not overlapped；

The step 15 further comprises the lower bearing 152 in pedestal portion 151 and insertion pedestal portion 151, the seat There is an annular groove, this annular groove has been embedded in an annular baffle 36, this annular baffle 36 is located on the inner wall in body portion 151 152 lower section of lower bearing is simultaneously connected with lower bearing 152.

Above-mentioned several air inlets 101 are two bar shaped air inlets disposed in parallel；Above-mentioned several air outlets 102 are three flat The bar shaped air outlet of row setting, and three bar shaped air outlets are staggered in the vertical direction；Above-mentioned top chock 14 and inner casing It is connected between body 2 by a bolt 16；The number of above-mentioned several blade grooves 17 is 4；The lower shaft portion 13 of above-mentioned core 3 is successively embedding Enter step 15 and rotation 22 top of shell, and is connect by a pin 25 with rotation shell 22；Have one in above-mentioned mounting base 23 Through-hole, and there is screw thread on the inner wall of through-hole, in the through-hole of above-mentioned 4 top of swivel head insertion mounting base 23 and with 23 spiral shell of mounting base Line connection.

When using above-mentioned Pneumatic grinding head easy to assemble, the combination settings of inner and outer shell and core, clever structure, gas process First cavity enters inner housing, blows driving blade, and driving blade drives core rotation, is discharged using the second cavity, core Rotation drive swivel head rotation, realize automatically grinding, structure is simple, easy to use；In addition, it passes through between rotation shell and bearing Tape splicing moves swivel head rotation, prevents occurring swivel head stuck situation when lower amount of pressure is excessive, guarantees the flexible rotating of swivel head； And the core out-of-alignment eccentric setting of swivel head and driving spin head, so that will not leave behind the rail of polishing in bruting process Trace improves the fine degree of polishing；In addition, it uses baffle by the pedestal portion of bearing loading bearing block, conveniently to bearing Dismounting, when bearing loss needs replacing, it is only necessary to split out bearing from the lower section of grinding head, without will be in above it Outer housing separation avoids the case where dismantling and can not be fitted close completely, ensure that shell because of multiple between inner and outer shell Internal sealing effect is further ensured that the stability to swivel head driving；In addition, the setting of its pin, further enhances The stability connected between top chock and inner housing prevents bearing block from situations such as deviation occur and influences the rotation angle of core Degree guarantees that core drives swivel head to rotate around vertical direction, to guarantee the precision of polishing.

The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention. All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it It is interior.

Claims (10)

1. a kind of Pneumatic grinding head easy to assemble, it is characterised in that: including outer housing (1), inner housing (2), core (3) and swivel head (4), the inner housing (2) is located in outer housing (1), and the core (3) is rotatably set in inner housing (2), the rotation Rotary head (4) and core (3) installation connect；

The inner and outer wall of the inner housing (2) is cylindrical surface, the central axis on inner housing (2) the outer wall cylindrical surface with it is interior The centerline axis parallel on shell (2) inner wall cylindrical surface and be not overlapped so that the wall thickness of inner housing (2) semi-circumference upwards by Gradually it is incremented by, there are two annular groove disposed in parallel (5) for tool on inner housing (2) outer wall, thus the shape on inner housing (2) outer wall At parallel the first lug boss (601), the second lug boss (602) and third protrusion portion (603), inner housing (2) outer wall with Outer housing (1) inner wall close-fitting connection, to form the first chamber between outer housing (1) and two annular grooves (5) of inner housing (2) Body (8) and the second cavity (9) are provided with several air inlets (101) on annular groove (5) inner wall in first cavity (8), described Several air outlets (102) are provided on annular groove (5) inner wall in second cavity (9)；

The central axis of the core (3) is overlapped with the central axis on inner housing (2) outer wall cylindrical surface, and the core (3) includes Upper axle portion (11), driving portion (12) and lower shaft portion (13), this core (3) can be turned by top chock (14), step (15) Dynamic is installed in outer housing (1), and top chock (14) lower surface and inner housing (2) top surface connect, the lower axle It holds seat (15) to be set in outer housing (1) and be located at below inner housing (2), be circumferentially equidistantly provided on the core (3) Several blade grooves (17), this blade groove (17) is interior to be respectively embedded into driving blade (18), is provided with air inlet on the outer housing (1) Mouth (19) and gas outlet (20), the air inlet (19) and the first cavity (8) penetrate through, the gas outlet (20) and the second cavity (9) it penetrates through；

Lower shaft portion (13) end of the core (3) is connected with a rotation shell (22), has a mounting base in this rotation shell (22) (23), this mounting base (23) is rotatably installed in rotation shell (22) by a bearing (24), the swivel head (4) and installation The central axis of seat (23) connection, the mounting base (23), bearing (24) and swivel head (4) is overlapped, in the swivel head (4) Mandrel line is not overlapped with the central axis of core (3) lower shaft portion (13)；

The step (15) further comprises the lower bearing (152) in pedestal portion (151) and insertion pedestal portion (151), institute Stating has an annular groove on the inner wall of pedestal portion (151), this annular groove has been embedded in an annular baffle (36), this annular gear Piece (36) is located at below lower bearing (152) and connects with lower bearing (152).

2. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: the upper axle portion (11) of the core (3) It is embedded in top chock (14), in lower shaft portion (13) insertion step (15) of the core (3), driving portion (12) position In inner housing (2).

3. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: the blade groove (17) is located at core (3) on driving portion (12).

4. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: inner housing (2) the outer wall cylinder Central axis is located in inner housing (2) inner wall.

5. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: several air inlets (101) are two A bar shaped air inlet disposed in parallel.

6. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: several air outlets (102) are three A bar shaped air outlet disposed in parallel, and three bar shaped air outlets are staggered in the vertical direction.

7. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: the top chock (14) and inner housing (2) it is connected between by a bolt (16).

8. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: the number of several blade grooves (17) It is 4.

9. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: the lower shaft portion (13) of the core (3) It is sequentially embedded step (15) and rotation shell (22) top, and is connect by a pin (25) with rotation shell (22).

10. Pneumatic grinding head easy to assemble according to claim 1, it is characterised in that: have one on the mounting base (23) Through-hole, and there is screw thread on the inner wall of through-hole, swivel head (4) top is embedded in the through-hole of mounting base (23) and and mounting base (23) it is threadedly coupled.