CN114178983A

CN114178983A - Grinding wheel headstock

Info

Publication number: CN114178983A
Application number: CN202111545346.6A
Authority: CN
Inventors: 李亚鹏; 杜长林; 于本宏; 王大伟; 邓鑫; 贺行健; 于畅; 王绍奇; 张国靖
Original assignee: Dalian Kede Numerical Control Co Ltd
Current assignee: Dalian Kede Numerical Control Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-03-15

Abstract

The invention provides a grinding wheel headstock, comprising: the rotor and the motionless body are equipped with first bearing, second bearing and clamping mechanism between the rotor and the motionless body, and the rotor includes pivot, bearing housing and rotatory box, and the motionless body includes dabber and base, and the rotor rotates for the motionless body under the drive of motor. The mandrel is fixed, the rotating shaft, the bearing sleeve and the rotating box body which are arranged outside the mandrel rotate relative to the mandrel, the rotating body is rotatably connected with the mandrel and the base through the bearing, and the rotating rigidity is ensured through the mandrel and the base, so that the problem that the rotating body is only connected with the power output shaft and the rigidity is insufficient is solved. Meanwhile, the rotating body is arranged outside the motor, so that the size of the grinding wheel headstock is reduced, the occupied space is small, and the arrangement is convenient.

Description

Grinding wheel headstock

Technical Field

The invention relates to the field of grinding processing, in particular to a grinding wheel headstock.

Background

The existing grinding wheel headstock comprises a driving motor and a frame body, and the frame body is in transmission connection with an output shaft of the motor. The frame body is axially connected with the motor, so that a large space can be occupied, when the space arranged on the grinding machine is limited, the condition that the grinding wheel headstock is difficult to mount can occur, and if the model of the motor is reduced, the requirement of grinding processing is difficult to meet. Meanwhile, the frame body is in transmission connection with the end part of the output shaft of the motor, and the rigidity of the grinding wheel headstock is insufficient.

Disclosure of Invention

The invention provides a grinding wheel headstock to solve the problems.

A grinding wheel head comprising: the clamping device comprises a rotating body and an immovable body, wherein a first bearing, a second bearing and a clamping mechanism are arranged between the rotating body and the immovable body, the rotating body comprises a rotating shaft, a bearing sleeve and a rotating box body, the immovable body comprises a mandrel and a base, and the rotating body rotates relative to the immovable body under the driving of a motor;

the dabber with the base is relatively fixed, be equipped with on the base the pivot, the pivot with be equipped with between the base first bearing, the pivot with the stator fixed connection of motor, the rotor of motor with dabber fixed connection, the spindle is equipped with the second bearing, be equipped with the bearing housing outward in the second bearing, the bearing housing with rotatory box fixed connection.

Furthermore, a clamping block is arranged outside the mandrel, the clamping mechanism is arranged between the clamping block and the bearing sleeve, and the clamping mechanism is a double-pneumatic clamp.

Further, the base comprises a circumferential installation part, the circumferential installation part is provided with an inner circumferential installation surface, the first bearing is arranged between the inner circumferential installation surface and the outer side of the rotating shaft, and the inner side of the rotating shaft is fixedly connected with the stator of the motor;

and one side of the rotating shaft, which is close to the end part of the mandrel, is provided with the bearing sleeve, and the bearing sleeve is fixedly connected with the stator of the motor in the axial direction.

Furthermore, the end of the mandrel is provided with a coder, one side of the bearing sleeve, which is close to the end of the mandrel, is fixed with a flange plate, and the shell of the coder is fixedly connected with the flange plate.

Furthermore, a grinding wheel head is arranged outside the rotary box body, and the horizontal position of the processing surface of the grinding wheel head is located between the horizontal position of the first bearing and the horizontal position of the second bearing.

The invention discloses a grinding wheel headstock.A mandrel is fixed, a rotating shaft, a bearing sleeve and a rotating box body which are arranged outside the mandrel rotate relative to the mandrel, a rotating body is rotationally connected with the mandrel and a base through a bearing, and the rotating rigidity is ensured through the mandrel and the base, so that the problem that the rotating body is only connected with a power output shaft and has insufficient rigidity is solved. Meanwhile, the rotating body is arranged outside the motor, so that the size of the grinding wheel headstock is reduced, the occupied space is small, and the arrangement is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic view of a grinding wheel head structure disclosed in an embodiment of the present invention;

fig. 2 is a schematic structural view of a stopper and a limiter in a wheel head according to an embodiment of the present invention.

In the figure:

1, a mandrel; 2. a base; 21. an annular groove; 22. a stopper; 3. a motor; 4. a rotating shaft; 41. a limiting member; 5. a first bearing; 6. a second bearing; 7. a bearing housing; 8. rotating the box body; 9. a clamping mechanism; 10. a clamping block; 11. an encoder; 12. a flange plate; 13. and (4) annular installation parts.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a grinding wheel head, comprising: the clamping device comprises a rotating body and an immovable body, wherein a first bearing 5, a second bearing 6 and a clamping mechanism 9 are arranged between the rotating body and the immovable body, the rotating body comprises a rotating shaft 4, a bearing sleeve 7 and a rotating box body 8, the immovable body comprises a mandrel 1 and a base 2, and the rotating body rotates relative to the immovable body under the drive of a motor 3;

dabber 1 with base 2 relatively fixed, be equipped with on base 2 pivot 4, pivot 4 with be equipped with between the base 2 first bearing 5, pivot 4 with the stator fixed connection of motor 3, the rotor of motor 3 with dabber 1 fixed connection, be equipped with second bearing 6 on the dabber 1, second bearing 6 is equipped with bearing housing 7 outward, bearing housing 7 with rotatory box 8 fixed connection.

In the grinding process of the blade tip of the aeroengine rotor, the requirement on the machining precision of a workpiece is very high, and the machining quality of the workpiece can be directly influenced if the precision of any part on a machine tool is slightly insufficient. The grinding wheel headstock is used as a mounting structure of the grinding wheel head, and the influence on processing is very important. Traditional emery wheel headstock is interior rotation type, and rotatory support body must be connected with inside swivelling axis, and this volume that lets the emery wheel headstock is difficult to control, and whole rigidity receives end connection's structure restriction moreover, is difficult to promote.

In this embodiment, an external rotation structure is adopted, the internal spindle is stationary, the box body is directly arranged outside the spindle, the grinding wheel head is arranged on the box body, and the first bearing and the second bearing are arranged at the same time, so that the rotation rigidity of the grinding wheel head frame and the processing rigidity of the grinding wheel head are ensured by the two bearings, and the processing precision is ensured.

A clamping block 10 is arranged outside the mandrel 1, the clamping mechanism 9 is arranged between the clamping block 10 and the bearing sleeve 7, and the clamping mechanism 9 is a double-pneumatic clamp. The double-pneumatic clamp structure adopts a small-specification starting clamp, occupies small space and meets the braking requirement.

The base 2 comprises a circumferential installation part 13, the circumferential installation part 13 is provided with an inner circumferential installation surface, the first bearing 5 is arranged between the inner circumferential installation surface and the outer side of the rotating shaft 4, and the inner side of the rotating shaft 4 is fixedly connected with a stator of the motor 3;

one side of the rotating shaft 4, which is close to the end part of the mandrel 1, is provided with the bearing sleeve 7, and the bearing sleeve 7 is fixedly connected with the stator of the motor 3 in the axial direction.

The rotor rotates with dabber and base to be connected, and the support of dabber and base improves the rotation rigidity of rotor, avoids under the condition of the independent atress of dabber, and the rigidity is not enough. Set up first bearing 5 between the installation face of hoop installation department 13 and the periphery of pivot 4, firm support first bearing 5 on radial direction, between hoop installation department 13 and the dabber, form the rotation space of rotating the piece, all restrict and support in radial inside and outside two directions simultaneously, the rigidity is rotated in the at utmost assurance.

And a grinding wheel head is arranged outside the rotary box body 8, and the horizontal position of the processing surface of the grinding wheel head is between the horizontal position of the first bearing 5 and the horizontal position of the second bearing 6.

The position of the grinding wheel head processing surface is a stress position in processing, the grinding wheel head is in contact with a workpiece, the generated force acts between the first bearing and the second bearing, the mandrel and the base are shared, all processing moments are prevented from being born by the mandrel, the grinding wheel head frame is enabled to have higher rigidity, the force generated in processing simultaneously acts between the first bearing and the second bearing, the moment arm of the acting force is also reduced to the minimum value relative to the first bearing and the second bearing, the moment is reduced, and the rigidity is further improved.

The end part of the mandrel 1 is provided with an encoder 11, one side of the bearing sleeve 7 close to the end part of the mandrel 1 is fixedly provided with a flange 12, and a shell of the encoder 11 is fixedly connected with the flange 12. The shell and the connecting line of the encoder rotate along with the rotating body.

As shown in fig. 2, the base 2 is provided with an annular groove 21, the annular groove 21 is internally provided with a stop member 22, the rotating shaft 4 is provided with a limit member 41, the limit member 41 extends into the annular groove and rotates along with the rotating shaft 4, the limit member 41 enables the rotation angle of the rotating shaft to be within ± 180 °, the stop member and the limit member can effectively prevent the grinding wheel head from excessively rotating, and when numerical control fails, the grinding wheel head can be prevented from continuously rotating through a mechanical structure.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding wheel headstock, comprising: the clamping device comprises a rotating body and an immovable body, wherein a first bearing (5), a second bearing (6) and a clamping mechanism (9) are arranged between the rotating body and the immovable body, the rotating body comprises a rotating shaft (4), a bearing sleeve (7) and a rotating box body (8), the immovable body comprises a mandrel (1) and a base (2), and the rotating body rotates relative to the immovable body under the drive of a motor (3);

dabber (1) with base (2) relatively fixed, be equipped with on base (2) pivot (4), pivot (4) with be equipped with between base (2) first bearing (5), pivot (4) with the stator fixed connection of motor (3), the rotor of motor (3) with dabber (1) fixed connection, be equipped with second bearing (6) on dabber (1), be equipped with bearing housing (7) outside second bearing (6), bearing housing (7) with rotatory box (8) fixed connection.

2. The grinding wheel headstock according to claim 1, characterized in that a clamping block (10) is arranged outside the spindle (1), the clamping mechanism (9) is arranged between the clamping block (10) and the bearing sleeve (7), and the clamping mechanism (9) is a double pneumatic clamp.

3. A grinding wheel headstock according to claim 1, characterized in that the base (2) comprises a circumferential mounting part (13), the circumferential mounting part (13) having an inner circumferential mounting surface, the first bearing (5) being provided between the inner circumferential mounting surface and the outer side of the rotating shaft (4), the inner side of the rotating shaft (4) being fixedly connected with the stator of the motor (3);

one side of the rotating shaft (4) close to the end part of the mandrel (1) is provided with the bearing sleeve (7), and the bearing sleeve (7) is fixedly connected with the stator of the motor (3) in the axial direction.

4. The grinding wheel headstock according to claim 1, characterized in that an encoder (11) is arranged at the end of the spindle (1), a flange (12) is fixed on one side of the bearing sleeve (7) close to the end of the spindle (1), and a shell of the encoder (11) is fixedly connected with the flange (12).

5. A grinding wheel head according to claim 1, characterized in that a grinding wheel head is arranged outside the rotating box (8), and the horizontal position of the grinding wheel head machining surface is between the horizontal position of the first bearing (5) and the horizontal position of the second bearing (6).

6. Grinding wheel head according to claim 1, characterized in that the base (2) is provided with an annular groove (21), a stop (22) is provided in the annular groove (21), the spindle (4) is provided with a stop (41), and the stop (41) extends into the annular groove (21) and rotates with the spindle (4).