CN212859059U

CN212859059U - Internal cooling external rotation grinding wheel spindle

Info

Publication number: CN212859059U
Application number: CN202021725897.1U
Authority: CN
Inventors: 孔德海; 赵重喜; 梁兴
Original assignee: Anyang Laigong Technology Co ltd
Current assignee: Anyang Laigong Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-02
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses an internal cooling external rotation grinding wheel spindle, which comprises a rotating shaft, a pressing sleeve, a sealing cover, a shell, a bearing group, an external spacer sleeve, an internal spacer sleeve, an end cover, a fixing sleeve and a fixing bolt, wherein the middle part of an internal cavity of the shell is provided with the external spacer sleeve and the internal spacer sleeve; the fixed sleeves with the same outer diameter are respectively arranged at the left end and the right end of the rotating shaft and are respectively fixed by bolts. The double-end fixed sleeve is fixed on the rotating shaft, the outer shell is driven by the belt pulley to rotate, the grinding wheel is further driven to rotate to process a workpiece, a reasonable cooling structure is arranged inside the main shaft, internal temperature rise of the grinding wheel during rotation is reduced through circulation of cooling gas, the whole grinding wheel shaft is compact in structure, and occupied space is small.

Description

Internal cooling external rotation grinding wheel spindle

Technical Field

The utility model belongs to the technical field of the grinding machine equipment, a internal cooling external rotation emery wheel axle is related to.

Background

Usually, the grinding wheel of the grinding wheel spindle is generally arranged at the front end part of the spindle, the belt pulley is arranged at the rear end part of the grinding wheel spindle, the belt pulley at the rear end of the grinding wheel spindle is driven by an external motor through a belt to rotate, so that the grinding wheel at the front end of the grinding wheel spindle is driven to rotate to perform grinding processing, however, the structure of the grinding wheel spindle is complex in design, the grinding wheel and the belt pulley are respectively arranged at two ends of the grinding wheel spindle, the whole structure of the grinding wheel spindle is long, the machine tool occupies a large space, a plurality of parts are arranged, meanwhile, the cooling of the grinding wheel spindle generally adopts a natural cooling mode or a cooling mode through a plurality of peripheral shells, the heat inside the.

Disclosure of Invention

The defect and the problem that exist to current emery wheel axle technique provide an interior cooling external rotation emery wheel axle, adopt to be provided with the belt pulley in casing one end, and the casing middle part sets up the installation emery wheel, and the countershaft is fixed simultaneously, and the casing can be rotatory around the pivot to set up mesopore cooling structure in the pivot, cool off the emery wheel axle inside through high-pressure cooling gas, the whole length of emery wheel axle shortens, and the cooling effect improves.

The utility model discloses the technical scheme who adopts: an internal cooling external rotation grinding wheel shaft comprises a rotating shaft, a fixing sleeve I, a fixing bolt I, a pressing sleeve, a sealing cover, a shell, a grinding wheel sleeve, a bearing group, an external spacer bush, an internal spacer bush, an end cover, a fixing sleeve II and a fixing bolt II, wherein the shell is internally provided with a cavity structure, the middle part of a cavity in the shell is provided with the external spacer bush and the internal spacer bush, and the left end and the right end of the external spacer bush and the left end of the internal spacer bush are provided with the bearing group; the bearing sets are arranged on two sides of the middle part of the rotating shaft; the left end of the cavity structure of the shell is provided with a step structure with the inner diameter larger than that of the middle part, and the inner wall of the step structure of the shell is provided with a sealing cover; a pressing sleeve is arranged inside the sealing cover; an end cover is arranged at the right end of the shell; fixed cover I and fixed cover II set up respectively and install the left end and the right-hand member at the pivot to it is fixed with bolt I and bolt II respectively.

Further, the left end external diameter of casing is provided with the belt pulley structure that the external diameter is greater than casing middle part external diameter, sets up at the right-hand member external diameter of casing and installs the emery wheel cover.

Further, the outer diameter size and the precision grade of the fixing sleeve I and the fixing sleeve II are the same.

The rotating shaft is of a hollow structure, a thread structure is arranged on the inner wall of the right end of the rotating shaft, an inwards concave step structure is arranged in the middle of the rotating shaft, cross-shaped through holes are radially arranged on the circumference of the inwards concave step structure, and the through holes are communicated with the axial through holes of the rotating shaft.

Furthermore, a cross-shaped through hole is radially formed in the middle of the inner spacer sleeve.

The utility model discloses following profitable effect has: 1. one end of the shell is provided with a belt pulley, and the outer diameter of the shell is provided with a grinding wheel, so that the length of the rotating shaft is reduced, the overall length of a grinding wheel shaft is effectively shortened, and the occupied space of a machine tool is reduced; 2. the shell, the belt pulley and the grinding wheel mounting part are designed into a whole, so that the number of parts of the grinding wheel shaft is effectively reduced; 3. the grinding wheel spindle rotating shaft is designed in a hollow structure, cooling gas effectively cools the inside of the grinding wheel spindle, temperature rise caused by bearing friction in the rotation process of the grinding wheel spindle is reduced, and the service life of the grinding wheel spindle is prolonged.

Drawings

Fig. 1 is a general structural schematic diagram of an internal cooling external rotating grinding wheel spindle.

Fig. 2 is a schematic structural diagram of the housing.

Fig. 3 is a schematic structural view of the rotating shaft.

Fig. 4 is a schematic structural diagram of the inner spacer.

Reference numbers in the figures: 1-rotating shaft, 2-fixing sleeve I, 3-fixing bolt I, 4-pressing sleeve, 5-sealing cover, 6-shell, 7-grinding wheel sleeve, 8-grinding wheel 9-bearing group, 10-outer spacer sleeve, 11-inner spacer sleeve, 12-end cover, 13-fixing sleeve II, 14-fixing bolt II, 15-joint.

Detailed Description

The internal cooling external rotation grinding wheel spindle of the present invention will be described in more detail with reference to fig. 1-4 and by way of specific embodiments.

In order to more fully explain the utility model and its implementation, embodiments of the present invention are provided. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

As shown in fig. 1-4, an internal cooling external rotation grinding wheel spindle comprises a rotating shaft 1, a fixing sleeve i 2, a fixing bolt i 3, a pressing sleeve 4, a sealing cover 5, a shell 6, a grinding wheel sleeve 7, a bearing group 9, an external spacer sleeve 10, an internal spacer sleeve 11, an end cover 12, a fixing sleeve ii 13 and a fixing bolt ii 14, wherein the interior of the shell 6 is of a cavity structure, the middle of a cavity in the shell 6 is provided with the external spacer sleeve 10 and the internal spacer sleeve 11, and the left end and the right end of the external spacer sleeve 10 and the internal spacer sleeve 11 are provided with the bearing group 9; the bearing sets 9 are arranged and installed on two sides of the middle part of the rotating shaft 1; the left end of the cavity structure of the shell 6 is provided with a step structure with the inner diameter larger than that of the middle part, the inner wall of the step structure of the shell 6 is provided with a sealing cover 5, and the right end of the sealing cover 5 presses a bearing group 9; a pressing sleeve 4 is arranged inside the sealing cover 5; an end cover 12 is arranged at the right end of the shell 6, and the left end surface of the end cover 12 is in contact with and pressed against the right track surface of the bearing set 9 to prevent the axial displacement of the bearing set 9; the fixing sleeve I2 and the fixing sleeve II 13 are respectively arranged at the left end and the right end of the rotating shaft 1 and are respectively fixed by the bolt I and the bolt II, so that the effect of fixing the rotating shaft 1 is achieved, and the rotating shaft 1 is prevented from rotating; fixed cover I2 right-hand member compresses tightly bearing group 9 through compressing tightly cover 4, prevents bearing group 9's axial displacement.

Further, the left end of casing 6 is provided with the belt pulley structure that the external diameter is greater than 6 middle part external diameters of casing, sets up at the right-hand member external diameter of casing 6 and installs emery wheel cover 7, and outside belt can drive casing 6 through the belt pulley structure and rotate, and emery wheel cover 7 through 6 installations of casing drives emery wheel 8 and rotates.

Further, the outer diameter size and the precision grade of the fixed sleeve I2 and the fixed sleeve II 13 are the same, so that the installation precision of the grinding wheel shaft during installation is guaranteed, and the rotation precision of the grinding wheel shaft is guaranteed.

The rotating shaft 1 is of a hollow structure, a threaded structure is arranged on the inner wall of the right end of the rotating shaft 1, a connector 15 is installed, and cooling gas is externally connected; the middle part of the rotating shaft 1 is provided with an inwards concave step structure, the circumference of the inwards concave step structure of the rotating shaft 1 is radially provided with cross through holes, the through holes are communicated with the axial through holes of the rotating shaft 1, the effect that cooling gas enters the inner part of the grinding wheel shaft is achieved, and the cooling gas flows in the axial direction and the radial direction.

Furthermore, a cross through hole is radially arranged in the middle of the inner spacer 11, so that cooling gas enters between the spacers to cool the bearing group 9.

The utility model discloses a use or operating condition: firstly, a grinding wheel 8 is arranged on a grinding wheel sleeve 7 and fixed outside a shell 6 together with the grinding wheel sleeve 7, and secondly, an external motor rotates and drives the shell 6 to rotate through a belt and a belt pulley structure arranged on the outer diameter of the shell 6, and further drives the grinding wheel 8 arranged on the outer circle of the shell 6 to rotate; meanwhile, external cooling gas enters the inner cavity of the rotating shaft 1 through the joint 15 and flows axially along the rotating shaft 1, and when reaching the radial cross through hole in the middle of the rotating shaft 1, the cooling gas reaches the bearing groups 9 at the two ends of the inner spacer sleeve 11 and the outer spacer sleeve 10 through the cross through hole in the rotating shaft 1 and the radial cross through hole in the inner spacer sleeve 11, so that the bearing groups 9 are cooled.

The above-mentioned embodiments should not be construed as limiting the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the scope of the present invention.

Claims

1. The utility model provides an internal cooling external rotation emery wheel axle, includes pivot (1), fixed cover I (2), fixing bolt I (3), compresses tightly cover (4), sealed lid (5), casing (6), emery wheel cover (7), bearing group (9), outer spacer (10), interior spacer (11), end cover (12), fixed cover II (13), fixing bolt II (14), its characterized in that: the inner part of the shell (6) is of a cavity structure, the middle part of the inner cavity of the shell (6) is provided with an outer spacer bush (10) and an inner spacer bush (11), and the left end and the right end of the outer spacer bush (10) and the inner spacer bush (11) are provided with a bearing group (9); the bearing sets (9) are arranged and installed on two sides of the middle part of the rotating shaft (1); the left end of the cavity structure of the shell (6) is provided with a step structure with the inner diameter larger than that of the middle part, the inner wall of the step structure of the shell (6) is provided with a sealing cover (5), and the right end of the sealing cover (5) compresses a bearing group (9); a pressing sleeve (4) is arranged inside the sealing cover (5); an end cover (12) is arranged at the right end of the shell (6), and the left end surface of the end cover (12) is in contact with and pressed against the right end surface of the bearing group (9); fixed cover I (2) and fixed cover II (13) set up respectively and install the left end and the right-hand member in pivot (1) to it is fixed with bolt I (3) and bolt II (14) respectively.

2. The internally cooled, externally rotated wheel spindle of claim 1, wherein: the left end of casing (6) is provided with the external diameter and is greater than the belt pulley structure of casing (6) middle part external diameter, sets up at the right-hand member external diameter of casing (6) and installs emery wheel cover (7).

3. The internally cooled, externally rotated wheel spindle of claim 1, wherein: the outer diameter and the precision grade of the fixing sleeve I (2) and the fixing sleeve II (13) are the same.

4. The internally cooled, externally rotated wheel spindle of claim 1, wherein: the rotating shaft (1) is of a hollow structure, a threaded structure is arranged on the inner wall of the right end of the rotating shaft (1), and a joint (15) is installed; the middle part of the rotating shaft (1) is provided with an inwards concave step structure, the circumference of the inwards concave step structure of the rotating shaft (1) is radially provided with a cross through hole, and the through hole is communicated with the axial through hole of the rotating shaft (1).

5. The internally cooled, externally rotated wheel spindle of claim 1, wherein: the middle part of the inner spacer sleeve (11) is radially provided with a cross through hole.